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i-manager's Journal on Structural Engineering (JSTE)

Current Issue Vol. 12 Issue 3

Assessment of Uncertainty of Error in Design Flood Estimates Using 2-Parameter Log Normal Distribution
The Impact of Plan Irregularity on Multistory Building Response: A Pushover Analysis
Static and Vibration Analysis of Reinforced Cement Concrete Cellular Beams: A Three-Dimensional Study
Pumice as a Coarse Aggregate Substitute for Lightweight Concrete: Strength and Density Assessment
Masonry Infill in Structural Analysis: Effects on Seismic Performance

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Volume 10 Issue 4 December - February 2022

Research Paper

Comparative Study on Strength Aspects of Lightweight Concrete by Replacing Fine Aggregate with Vermiculite and Cement with Metakaolin and Fly Ash

M. Preethi* , Mohd Hamraj, P. Ashveen Kumar*

* Department of Civil Engineering, Deccan College of Engineering and Technology, Hyderabad, India.

Department of Civil Engineering, Muffakham Jah College of Engineering and Technology, Hyderabad, India.

* Department of Civil Engineering, Matrusri Engineering College, Hyderabad, India.

Preethi, M., Hamraj, M., and Kumar, P. A. (2022). Comparative Study on Strength Aspects of Lightweight Concrete by Replacing Fine Aggregate with Vermiculite and Cement with Metakaolin and Fly Ash. i-manager’s Journal on Structural Engineering, 10(4), 1-7. https://doi.org/10.26634/jste.10.4.18636

Abstract

Despite the advantages of using lightweight concrete, its use as a structural elements is relatively small compared to conventional concrete. The density and properties of lightweight aggregates using expanded vermiculite as an alternative to natural river sand in building materials development would improve lightweight concretes. Therefore, the objective of this study is to investigate the strength properties of lightweight concrete M30 with fly ash, metakaolin and vermiculite with natural sand as a partial replacement for cement. In this study, a total of eighteen different concrete mixes were prepared with the replacement of cement with 20% fly ash and fine aggregate with vermiculite proportions from 0 to 25% in 5% increments, and another concrete mix was prepared with the replacement of cement with 10% metakaolin and fine aggregates with vermiculite fractions from 0 to 25% with the addition of 5%. The results were compared with a concrete mix without cement and at various ratios of vermiculite as a replacement for fine aggregate. 54 cubes of dimension 100 mm x 100 mm x 100 mm was cured for 28 days to determine the compressive strength; 54 prisms of dimension 100 mm x 100 mm x 500 mm was cured for 28 days to find flexural strength; and 54 cylinders of 100 mm diameter and height 300 mm was cured for 28 days to determine split tensile strength, all tests were conducted as per applicable Indian standards.

References

[1]. Bureau of Indian Standards. (1959). Indian standard methods of tests for strength of concrete IS: 516-1959, (Reaffirmed 1999), New Delhi, India.

[2]. Bureau of Indian Standards. (1982). Handbook on concrete mixes (Based on Indian Standards) SP: 23-1982, New Delhi, India.

[3]. Bureau of Indian Standards. (2000). Indian standard plain and reinforced concrete - code of practice IS: 456- 2000, (Reafflrmed 2005), New Delhi, India.

[4]. Bureau of Indian Standards. (2019). Indian standard concrete mix proportioning - guidelines (IS: 10262-2019), New Delhi, India.

[5]. Gencel, O., Gholampour, A., Tokay, H., & Ozbakkaloglu, T. (2021). Replacement of natural sand with expanded vermiculite in fly ash-based geopolymer mortars. Applied Sciences, 11(4), Article 1917. https://doi.org/10.3390/app11041917

[6]. Koksal, F., Sahin, Y., & Gencel, O. (2020). Influence of expanded vermiculite powder and silica fume on properties of foam concretes. Construction and Building Materials, 257, (pp. 119547). https://doi.org/10.1016/j.conbuildmat.2020.119547

[7]. Kumar, P. S., Babu, M. J. R. K., Kumar, K. S., & Kumar, K. S. (2010). Experimental study on lightweight aggregate concrete. International Journal of Civil Engineering Research, 1(1), 65-74.

[8]. Preethi, M., Hamraj, M., & Kumar, P. A. (2021). Strength and durability test (Sulphate attach) on light weight concrete by partial replacement of vermiculate for fine aggregate and silica fume for cement. International journal of Engineering applied sciences and technology, 5(2), 140-146.

[9]. Preethi, M., Hamraj, M., & Kumar, P. A. (2022a). Study on concrete with replacement of fine aggregates by vermiculite and cement by silica fume. Vidyabharati International Interdisciplinary Research Journal (Special Issue). 2497-2503.

[10]. Preethi, M., Hamraj, M., & Kumar, P. A. (2022b). Study on mechanical properties of light weight vermiculite concrete by partially replacing cement with GGBS and dolomite. International Journal for Research in Applied Science & Engineering Technology, 10(1), 394-400. https://doi.org/10.22214/ijraset.2022.39838

[11]. Przychodzień, P., & Katzer, J. (2021). Properties of structural lightweight aggregate concrete based on sintered fly ash and modified with exfoliated vermiculite. Materials, 14(20), Article 5922. https://doi.org/10.3390/ma14205922

[12]. Rashad, A. M. (2016). Vermiculite as a construction material–A short guide for Civil Engineer. Construction and Building Materials, 125, 53-62. https://doi.org/10.1016/j.conbuildmat.2016.08.019

[13]. Sastri, M. V. S. S., Kumar, P. A., & Rao, K. J. (2019). Experimental investigation on strength properties of ultrafine fly ash and micro silica as mineral admixtures for vermiculite mortar. i-manager's Journal on Material Science, 7(3), (pp. 53).

[14]. Sekar, G. C., Kumar, C. H., Manikanta, V., & Simhachalam, M. (2016). Effect of fly ash of mechanical properties of light weight vermiculite concrete. International Journal of Innovative Research in Science, Engineering & Technology, 5(3), 4106-4112.

[15]. Shetty, M. S., & Jain, A. K. (2019). Concrete Technology (Theory and Practice). S. Chand and Company Limited. New Delhi.

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Research Paper

Models to Predict the Mechanical Properties of Ternary Blended Fiber Reinforced SCC by using Mars and RVM

B. Seshaiah* , P. Srinivasa Rao, P. Subbarao*

, Department of Civil Engineering Jawaharlal Nehru Technological University, Kakinada, Andhra Pradesh, India.

Department of Civil Engineering, Jawaharlal Nehru Technological University, Hyderabad, Telangana, India.

Seshaiah, B., Rao, P. S., and Subbarao, P. (2022). Models to Predict the Mechanical Properties of Ternary Blended Fiber Reinforced SCC by using Mars and RVM. i-manager’s Journal on Structural Engineering, 10(4), 8-20. https://doi.org/10.26634/jste.10.4.18623

Abstract

This paper explores the applicability of Multivariate Adaptive Regression Splines (MARS) and Relevance Vector Machine (RVM) to predict the mechanical properties of fiber reinforced Self-Compacting Concrete (SCC) made up of quartz sand, micro silica and ground granulated blast-furnace slag (GGBS). Mechanical properties were evaluated for three grades of SCC mixes (M40, M50, and M60 with varying percentage of fibers (0.5%, 1.0%, and 1.5%) in each mix. Influencing variables were identified from the results of experimental investigations on various SCC mixes with and without fibers. Based on the output and input parameters, MARS establishes appropriate relations by using the concept of divide and conquers strategy. RVM is based on probabilistic classification utilizing the Bayesian formulation. About 70% of the mixed data of various SCC mixes was used for training after normalization of the data. The developed MARS and RVM models were verified with the rest of the data. It was found that MARS and RVM models could predict the mechanical properties of several SCC mixes very efficiently. The maximum variation between the predicted mechanical properties and the experimental observation is about ±12% for MARS model and ±15% for RVM model. Further, the efficacy of models has been tested through several statistical parameters. The developed models are useful to design the optimum experiments and for preliminary analysis of structures and components made up of similar SCC mixes.

References

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[2]. Avci-Karatas, C. (2019). Prediction of ultimate load capacity of concrete-filled steel tube columns using multivariate adaptive regression splines (MARS), Steel and Composite Structures,33(4),583-594. https://doi.org/10.12989/scs.2019.33.4.583

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[6]. Das, S. K., & Samui, P. (2008). Prediction of liquefaction potential based on CPT data: A relevance vector machine approach. In Proceedings of the 12th International Conference of International Association for Computer Methods and Advances in Geomechanics (IACMAG) (pp. 2856- 2861).

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[8]. Dinakar, P., Babu, K. G., & Santhanam, M. (2008). Mechanical properties of high-volume fly ash selfcompacting concrete mixtures, Structural Concrete, 9(2), 109-116.

[9]. El-Dieb, A. S. (2009). Mechanical, durability and microstructural characteristics of ultra-high-strength selfcompacting concrete incorporating steel fibers. Materials & Design, 30(10), 4286-4292. https://doi.org/10.1016/j.matdes.2009.04.024

[10]. El-Dieb, A. S., & Taha, M. R. (2012). Flow characteristics and acceptance criteria of fiberreinforced self-compacted concrete (FR-SCC). Construction and Building materials, 27(1), 585-596. https://doi.org/10.1016/j.conbuildmat.2011.07.004

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[16]. Khaloo, A., Raisi, E. M., Hosseini, P., & Tahsiri, H. (2014). Mechanical performance of self-compacting concrete reinforced with steel fibers. Construction and Building Materials, 51, 179-186. https://doi.org/10.1016/j.conbuildmat.2013.10.054

[17]. Li, J., & Yang, E. H. (2018). Probabilistic-based assessment for tensile strain-hardening potential of fiberreinforced cementitious composites. Cement and Concrete Composites, 91, 108-117. https://doi.org/10.1016/j.cemconcomp.2018.05.003

[18]. Liu, K., & Xu, Z. (2011). Traffic flow prediction of highway based on wavelet relevance vector machine. Journal of Information & Computational Science. 8(9), 1641–1647.

[19]. Lokuge, W., Wilson, A., Gunasekara, C., Law, D. W., & Setunge, S. (2018). Design of fly ash geopolymer concrete mix proportions using multivariate adaptive regression spline model. Construction and Building Materials, 166, 472-481. https://doi.org/10.1016/j.conbuildmat.2018.01.175

[20]. Mansouri, I., Safa, M., Ibrahim, Z., Kisi, O., Tahir, M. M., Baharom, S., & Azimi, M. (2016). Strength prediction of rotary brace damper using MLR and MARS. Structural Engineering and Mechanics, 60(3), 471-488.

[21]. Okamura, H. M, & Ouchi, M. (2003). Selfcompacting concrete. Journal of Advances Concrete Technology, 1, 5-15. https://doi.org/10.3151/jact.1.5

[22]. Okamura, H., & Ozawa, K. (1995). Mix design for selfcompacting concrete. Concrete Library of Japanese Society of Civil Engineers, 25, 107-120.

[23]. Parra, C., Valcuende, M., & Gómez, F. (2011). Splitting tensile strength and modulus of elasticity of selfcompacting concrete. Construction and Building Materials, 25(1), 201-207. https://doi.org/10.1016/j.conbuildmat.2010.06.037

[24]. Seshaiah, B., Rao, P. S., & Rao, P. S. (2021). Effect of mineral admixtures on the properties of steel fibre reinforced SCC proportioned using plastic viscosity and development of regression & ANN model. Computers and Concrete, 27(6), 523-535. https://doi.org/10.12989/cac.2021.27.6.523

[25]. Shah, V. S., Shah, H. R., Samui, P., Murthy, A. R., Merono, P., Gomez, F., & Liu, B. (2014). Prediction of fracture parameters of high strength and ultra-high strength concrete beams using minimax probability machine regression and extreme learning machine. Computers, Materials and Continua, 44(2), 73-84. https://doi.org/10.3970/cmc.2014.044.073

[26]. Soutsos, M. N., Le, T. T., & Lampropoulos, A. P. (2012). Flexural performance of fibre reinforced concrete made with steel and synthetic fibres. Construction and Building Materials, 36, 704-710. https://doi.org/10.1016/j.conbuildmat.2012.06.042

[27]. Tipping, M.E. (1999). The relevance vector machine. Advances in Neural Information Processing Systems, 12, 652-658.

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[30]. Wei, L., Yang, Y., Nishikawa, R. M., Wernick, M. N., & Edwards, A. (2005). Relevance vector machine for automatic detection of clustered microcalcifications. IEEE Transactions on Medical Imaging, 24(10), 1278-1285. https://doi.org/10.1109/TMI.2005.855435

[31]. Widodo, A., Kim, E. Y., Son, J. D., Yang, B. S., Tan, A. C., Gu, D. S., Choi, B. K., & Mathew, J. (2009). Fault diagnosis of low speed bearing based on relevance vector machine and support vector machine. Expert Systems with Applications, 36(3), 7252-7261. https://doi.org/10.1016/j.eswa.2008.09.033

[32]. Yehia, S., Douba, A., Abdullahi, O., & Farrag, S. (2016). Mechanical and durability evaluation of fiberreinforced self-compacting concrete. Construction and Building Materials, 121, 120-133. https://doi.org/10.1016/j.conbuildmat.2016.05.127

[33]. Yuvaraj, P., Murthy, A. R., Iyer, N. R., Samui, P., & Sekar, S. K. (2013a). Multivariate adaptive regression splines model to predict fracture characteristics of high strength and ultra high strength concrete beams. CMC: Computers, Materials & Continua, 36(1), 73-97.

[34]. Yuvaraj, P., Murthy, A. R., Iyer, N. R., Samui, P., & Sekar, S. K. (2014a). Prediction of fracture characteristics of high strength and ultra high strength concrete beams based on relevance vector machine. International Journal of Damage Mechanics, 23(7), 979-1004. https://doi.org/10.1177/1056789514520796

[35]. Yuvaraj, P., Murthy, A. R., Iyer, N. R., Sekar, S. K., & Samui, P. (2013b). Support vector regression based models to predict fracture characteristics of high strength and ultra high strength concrete beams. Engineering Fracture Mechanics, 98, 29-43. https://doi.org/10.1016/j.engfracmech.2012.11.014

[36]. Yuvaraj, P., Murthy, A. R., Iyer, N. R., Sekar, S. K., & Samui, P. (2014b). ANN model to predict fracture characteristics of high strength and ultra high strength concrete beams. CMC-Computers Materials & Continua, 41(3), 193-213.

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Research Paper

Comparative Analysis of Seismic Response of Buildings with Different Base Isolation Systems

Shankar H. Sanni* , Vilas Kulkarni**

*-** Department of Civil Engineering, Basaveshwar Engineering College, Bagalkot, Karnataka, India.

Sanni, S. H., and Kulkarni, V. (2022). Comparative Analysis of Seismic Response of Buildings with Different Base Isolation Systems. i-manager’s Journal on Structural Engineering, 10(4), 21-31. https://doi.org/10.26634/jste.10.4.18414

Abstract

When a structure is subjected to earthquake forces, vibrations are setup in the structure leading to severe damages to the structure and results in loss of property and life. Now a days, keen attention is given to research and development of vibration control devices to mitigate the seismic effects. The present duty of civil engineer is to discover earthquake resisting design approach to reduce structural damages. The basic technology used to protect the structure from damaging earthquake effects is “base isolation”. The base isolation system decouples the super-structure from the substructure by means of flexible devices through which seismic energy is dissipated. In the present context G+15 storey structure situated in zone V is modeled and analyzed using ETABS-2017 software by providing different base isolation systems namely a) RC structure having fixed base b) RC structure with Fluid Viscous Damper (FVD) and Lead Rubber Bearing (LRB). Response of the structure is studied in terms of story displacement, story drift, base shear, natural time period and design lateral forces. It is found that the provision of Fluid Viscous Damper (FVD) and Lead Rubber Bearing (LRB) in a same structure shows better performance in story displacement, base shear, story drift, natural time period and design lateral forces as compared to fixed base model.

References

[1]. Bureau of Indian Standards. (1987). Code of Practice for Design loads (other than Earthquake) for buildings and structures (IS: 875 (Part 1)-1987), Dead loads, New Delhi, India.

[2]. Bureau of Indian Standards. (1987). Code of Practice for Design loads (other than Earthquake) for buildings and structures (IS: 875 (Part 2)-1987), Imposed loads, New Delhi, India.

[3]. Bureau of Indian Standards. (1987). Code of Practice for Design loads (other than Earthquake) for buildings and structures (IS: 875 (Part 3)-1987), Wind loads, BIS, New Delhi, India.

[4]. Bureau of Indian Standards. (2000). Plain and Reinforced Concrete-Code of Practice (Fourth Revision) IS 456:2000, (Reaffirmed 2011), New Delhi, India.

[5]. Bureau of Indian Standards. (2016). Criteria for Earthquake Resistant Design of Structures (IS: 1893 (Part 1)-2016), New Delhi, India.

[6]. Darshale, S. D., & Shelke, N. L. (2016). Seismic response control of vertically irregular RCC structure using base isolation. International Journal of Engineering and Research, 5(2), 683-689. https://doi.org/10.17950/ijer/v5i3/036

[7]. Dhawade, S. M., & Harle, S. M. (2014). Seismic performance of base isolated & fixed based RC frame structure using ETABS. International Journal of Engineering Sciences and Research Technology, 2277-9655.

[8]. Khannavar, S., & Kolhar, M. H. (2016). Seismic analysis of RC structure using base isolation technique. International Research Journal of Engineering and Technology, 3(7), 2320-2327.

[9]. Moretti, S., Trozzo, A., Terzic, V., Cimellaro, G. P., & Mahin, S. (2014). Utilizing base-isolation systems to increase earthquake resiliency of healthcare and school buildings. Procedia Economics and Finance, 18, 969-976. https://doi.org/10.1016/S2212-5671(14)01024-7

[10]. Priyanka, N., Thivya, J., & Vijayaraghavan, J. (2019). Seismic study of multi-storey structure with fluid viscous dampers using ETABS. International research Journal of Engineering and Technology, 6(4), 3584-3589.

[11]. Shirol, S., & Kori, J. J. (2017). Seismic base isolation of RC frame structure with and without infill. International research Journal of Engineering and Technology, 4(6), 1783-1792.

[12]. Tyagi, B., & Tyagi, B. S. (2018). Seismic response study of multi-storied reinforced concrete building with fluid viscous dampers. International Research Journal of Engineering and Technology (IRJET), 5(5), 2267-2271.

[13]. Uniform Building Code. (1997). International Conference of Building Officials. Retrieved from https:// bayarearetrofit.com/wp-content/uploads/2022/01/UCBC.pdf

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Research Paper

Durability Studies of Concrete Added with Nanosilica

D. S. V. S. M. R. K. Chekravarty* , A. Mallika, P. Sravana*, Srinivasa Rao****

,- Department of Civil Engineering, Jawaharlal Nehru Technological University College of Engineering, Hyderabad, India.

Department of Civil Engineering, Vallurupalli Nageswara Rao Vignana Jyothi Institute of Engineering & Technology, Telangana, India.

Chekravarty, D. S. V. S. M. R. K., Mallika, A., Sravana, P., and Rao, S. (2022). Durability Studies of Concrete Added with Nanosilica. i-manager’s Journal on Structural Engineering, 10(4), 32-43. https://doi.org/10.26634/jste.10.4.18487

Abstract

The performance of existing materials such as concrete has been improved significantly by blending it with specific property enhancement materials especially nanomaterials like nanosilica. Utilization of nanosilica has been proved to be beneficial because of its indispensable qualities, which helps in creating concrete with improved strength and durability. In this paper, the impact of nanosilica on toughness of cement has been researched. For this purpose, 3% of ideal measurement of nanosilica has been added to solid combinations of M40, M50, M60 grades of concrete. Additionally, the admixture Conplast SP 430 is utilized to build workability. For the experimental studies, M40, M50, M60 evaluations of cement with water concrete proportion of 0.48, 0.45, and 0.40 is used. Durability has been investigated through sorptivity, freeze & thaw, carbonation, rapid chloride porousness tests. Results of this current examination study indicated that nanosilica can be successful in improving the sturdiness of cement.

References

[1]. Bajpai, V., Chandraul, K., & Singh, M. K. (2018). Experimental study on partial replacement of cement with nanosilica in concrete. International Research Journal of Engineering and Technology, 5(1), 1000-1003.

[2]. Berra, M., Carassiti, F., Mangialardi, T., Paolini, A. E., & Sebastiani, M. (2012). Effects of nanosilica addition on workability and compressive strength of Portland cement pastes. Construction and Building Materials, 35, 666-675. https://doi.org/10.1016/j.conbuildmat.2012.04.132

[3]. Carmichael, J., Prince, M., & Arulraj, G. (2012). Influence of nano materials on consistency, setting time and compressive strength of cement mortar. Eng Science Technology, 1(1), 158-162.

[4]. El-Feky, M. S., Serag, M. I., Yasien, A. M., & Elkady, H. (2016). Bond strength of nanosilica concrete subjected to corrosive environments. ARPN Journal of Engineering and Applied Sciences, 11(23), 13909-13924.

[5]. Guleria, A. N., & Salhotra, S. (2016). Effects of silica fume (micro silica or nanosilica) on mechanical properties of concrete: A review. International Journal of Civil Engineering and Technology, 7(4), 345-357.

[6]. Kiran, V. S., Chowdary, V. S., & Rao, P. V. (2016). Comparison of mechanical properties of nano concrete with conventional high strength concrete. Indian Concrete Journal, 90, 95-100.

[7]. Kumar, A., & Singh, G. (2018). Effect of nanosilica on the fresh and hardened properties of cement mortar. International Journal of Applied Engineering Research, 13(13), 11183-11188.

[8]. Lanjewar, P., Jaiswal, A., Jain, A., Dhomne, B., Thakre, D., Matale, P., & Wankhede, R. (2017). Experimental Study on the Strength and Durability of Nano-Concrete. International Journal of Innovative and Emerging Research in Engineering, 4(3), 170-175.

[9]. Ltifi, M., Guefrech, A., Mounanga, P., & Khelidj, A. (2011). Experimental study of the effect of addition of nanosilica on the behaviour of cement mortars. Procedia Engineering, 10, 900-905.

[10]. Patel, D. A., & Mishra, C. B. (2017). Repercussion of nanosilica on m40 grade concrete. International Journal for Research in Applied Science & Engineering Technology, 5(4), 1571-1575.

[11]. Qing, Y., Zenan, Z., Deyu, K., & Rongshen, C. (2007). Influence of nano-SiO2 addition on properties of hardened cement paste as compared with silica fume. Construction and Building Materials, 21(3), 539-545. https://doi.org/10.1016/j.conbuildmat.2005.09.001

[12]. Reddy, S. V. B., & Mounika, P. R. (2018). Strength and durability studies of ternary concrete. International Journal of Applied Engineering Research, 13(15), 12161-12177.

[13]. Sakthivel, R., & Balasundaram, D. N. (2016). Experimental investigation on behaviour of nano concrete. International Journal of Civil Engineering and Technology, 7(2), 315-320.

[14]. Sakthivel, R., Rajkumar, K., Roja, R., Reji, R., & Vigneshwaran, M. (2017). Investigation of natural hybrid fibre reinforced beams with nano concrete under cyclic loading. International Journal for Research Trends Innovation, 2(5), 93-100.

[15]. Sakthivel, R., Vijay, S., Ramachandran, T., & Saravanakumar, M. (2017). Behaviour of natural hybrid fibre reinforced slab with nano concrete under static loading. International Journal for Innovative Research in Science & Technology, 3(12), 28-34.

[16]. Shah, M. M. A., Balaji, E., & Pandian, G. A. M. (2016). Experimental study on mechanical properties of high strength concrete using Nanosilica. International Research Journal of Engineering and Technology (IRJET), 3(4).

[17]. Sridevi, M., Rao, P. S., & Sekhar, T. S. (2019). Effect of Freezing and Thawing on Quaternary Blended Bacterial Self-Compacting Concrete (QBBSCC). i-manager's Journal on Structural Engineering, 8(4), 10-16. https://doi.org/10.26634/jste.8.4.16552

[18]. Stefanidou, M., & Papayianni, I. (2012). Influence of nano-SiO on the Portland cement pastes. Composites 2 Part B: Engineering, 43(6), 2706-2710. https://doi.org/10.1016/j.compositesb.2011.12.015

[19]. Torabian Isfahani, F., Redaelli, E., Lollini, F., Li, W., & Bertolini, L. (2016). Effects of nanosilica on compressive strength and durability properties of concrete with different water to binder ratios. Advances in Materials Science and Engineering, (pp. 16). https://doi.org/10.1155/2016/8453567

[20]. Vasanthi, P., Senthilselvan, S., Hexton, D. B., Farooq, I. M. S., & Suresh, P. (2017). Durability study on nano concrete. International Journal of ChemTech Research CODEN (USA): IJCRGG, 10(3), 693-698.

[21]. Vignesh, V. (2017). Investigation on strength and durability properties of silica fumed concrete. International Journal of Novel Research and Development (IJNRD), 2(4).

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Research Paper

Effect of Corner Modifications on Wind-Induced Responses of Tall Buildings

Shankar H. Sanni* , Prabhu Gurunathappa Sheelvantar**

* Department of Civil Engineering, Basaveshwar Engineering College, Bagalkot, Karnataka, India.

** Manipal Institute of Technology, MAHE, Manipal, Karnataka, India.

Sanni, S. H., and Sheelvantar, P. G. (2022). Effect of Corner Modifications on Wind-Induced Responses of Tall Buildings. i-manager’s Journal on Structural Engineering, 10(4), 44-53. https://doi.org/10.26634/jste.10.4.18408

Abstract

Any tall building subjected to high-speed winds will tilt and crack unless precautionary measures are taken. Various active and passive control methods are proposed to control the wind induced responses of the tall buildings. These tall structures can be made aerodynamic by modifying the external geometry of the building. In the present study, minor geometrical modifications are rendered to the structures. G+30 storeys are considered for each model with constant plan layout. The location of the building is considered to be Bengaluru and corresponding wind load data is considered. Modeling and analysis is carried out using ETABS 2017 software. Wind load analysis is carried out to know the effect of these aerodynamic modifications. The parameters considered for the comparison are storey displacement, natural time period and overturning moment. On comparative analysis, it was observed that wind-induced responses of these geometrically modified buildings have reduced by 5% to 10%. It can also be concluded that minor modifications have shown significantly better performance than a conventional square-plan building in addition to an innovative architectural look.

References

[1]. Alaghmandan, M., Abdolhossein-Pour, F., & Mohammadi, J. (2013). Innovative design method of tall buildings. Cutting Edge: 47th International Conference of the Architectural Science Association (ANZAScA), 525-534.

[2]. Amin, J. A., & Ahuja, A. K. (2010). Aerodynamic modifications to the shape of the buildings: A review of the State-of-the-Art. Asian Journal of Civil Engineering (Building and Housing),11(4), 433-450.

[3]. Ilgın, H. E., &Günel, M. H. (2007). The role of aerodynamic modifications in the form of tall buildings against wind excitation. METU Journal of the Faculty of Architecture, 24(2), 17-25.

[4]. Jafari, M., &Alipour, A. (2021). Methodologies to mitigate wind-induced vibration of tall buildings: A stateof- the-art review. Journal of Building Engineering, 33, 101582. https://doi.org/10.1016/j.jobe.2020.101582

[5]. Kim, Y. C., Xu, X., Yang, Q., & Tamura, Y. (2019). Shape effects on aerodynamic and pedestrian-level wind characteristics and optimization for tall and super-tall building design. International Journal of High-Rise Buildings, 8(4), 235-253. https://doi.org/10.21022/IJHRB.2019.8.4.235

[6]. Mills, F. (2018). How Tall Buildings Tame the Wind. Retrieved from https://www.theb1m.com/video/how-tallbuildings-tame-the-wind

[7]. Mooneghi, M. A., &Kargarmoakhar, R. (2016). Aerodynamic mitigation and shape optimization of buildings. Journal of Building Engineering, 6, 225-235. https://doi.org/10.1016/j.jobe.2016.01.009

[8]. Sharma, A., Mittal, H., &Gairola, A. (2018). Mitigation of wind load on tall buildings through aerodynamic modifications. Journal of Building Engineering, 18, 180- 194. https://doi.org/10.1016/j.jobe.2018.03.005

[9]. Tanaka, H., Tamura, Y., Ohtake, K., Nakai, M., & Kim, Y. C. (2012). Experimental investigation of aerodynamic forces and wind pressures acting on tall buildings with various unconventional configurations. Journal of Wind Engineering and Industrial Aerodynamics, 107, 179-191. https://doi.org/10.1016/j.jweia.2012.04.014

[10]. Xie, J. (2014). Aerodynamic optimization of supertall buildings and its effectiveness assessment. Journal of Wind Engineering and Industrial Aerodynamics, 130, 88-98. https://doi.org/10.1016/j.jweia.2014.04.004

i-manager's Journal on Structural Engineering (JSTE)

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Volume 10 Issue 4 December - February 2022

Comparative Study on Strength Aspects of Lightweight Concrete by Replacing Fine Aggregate with Vermiculite and Cement with Metakaolin and Fly Ash

M. Preethi* , Mohd Hamraj**, P. Ashveen Kumar***

* Department of Civil Engineering, Deccan College of Engineering and Technology, Hyderabad, India. ** Department of Civil Engineering, Muffakham Jah College of Engineering and Technology, Hyderabad, India. *** Department of Civil Engineering, Matrusri Engineering College, Hyderabad, India.

Preethi, M., Hamraj, M., and Kumar, P. A. (2022). Comparative Study on Strength Aspects of Lightweight Concrete by Replacing Fine Aggregate with Vermiculite and Cement with Metakaolin and Fly Ash. i-manager’s Journal on Structural Engineering, 10(4), 1-7. https://doi.org/10.26634/jste.10.4.18636

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Models to Predict the Mechanical Properties of Ternary Blended Fiber Reinforced SCC by using Mars and RVM

B. Seshaiah* , P. Srinivasa Rao**, P. Subbarao***

*,*** Department of Civil Engineering Jawaharlal Nehru Technological University, Kakinada, Andhra Pradesh, India. ** Department of Civil Engineering, Jawaharlal Nehru Technological University, Hyderabad, Telangana, India.

Seshaiah, B., Rao, P. S., and Subbarao, P. (2022). Models to Predict the Mechanical Properties of Ternary Blended Fiber Reinforced SCC by using Mars and RVM. i-manager’s Journal on Structural Engineering, 10(4), 8-20. https://doi.org/10.26634/jste.10.4.18623

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Comparative Analysis of Seismic Response of Buildings with Different Base Isolation Systems

Shankar H. Sanni* , Vilas Kulkarni**

*-** Department of Civil Engineering, Basaveshwar Engineering College, Bagalkot, Karnataka, India.

Sanni, S. H., and Kulkarni, V. (2022). Comparative Analysis of Seismic Response of Buildings with Different Base Isolation Systems. i-manager’s Journal on Structural Engineering, 10(4), 21-31. https://doi.org/10.26634/jste.10.4.18414

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Durability Studies of Concrete Added with Nanosilica

D. S. V. S. M. R. K. Chekravarty* , A. Mallika**, P. Sravana***, Srinivasa Rao****

*,***-**** Department of Civil Engineering, Jawaharlal Nehru Technological University College of Engineering, Hyderabad, India. ** Department of Civil Engineering, Vallurupalli Nageswara Rao Vignana Jyothi Institute of Engineering & Technology, Telangana, India.

Chekravarty, D. S. V. S. M. R. K., Mallika, A., Sravana, P., and Rao, S. (2022). Durability Studies of Concrete Added with Nanosilica. i-manager’s Journal on Structural Engineering, 10(4), 32-43. https://doi.org/10.26634/jste.10.4.18487

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Effect of Corner Modifications on Wind-Induced Responses of Tall Buildings

Shankar H. Sanni* , Prabhu Gurunathappa Sheelvantar**

* Department of Civil Engineering, Basaveshwar Engineering College, Bagalkot, Karnataka, India. ** Manipal Institute of Technology, MAHE, Manipal, Karnataka, India.

Sanni, S. H., and Sheelvantar, P. G. (2022). Effect of Corner Modifications on Wind-Induced Responses of Tall Buildings. i-manager’s Journal on Structural Engineering, 10(4), 44-53. https://doi.org/10.26634/jste.10.4.18408

Abstract

References

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M. Preethi* , Mohd Hamraj, P. Ashveen Kumar*

* Department of Civil Engineering, Deccan College of Engineering and Technology, Hyderabad, India.

Department of Civil Engineering, Muffakham Jah College of Engineering and Technology, Hyderabad, India.

* Department of Civil Engineering, Matrusri Engineering College, Hyderabad, India.

B. Seshaiah* , P. Srinivasa Rao, P. Subbarao*

, Department of Civil Engineering Jawaharlal Nehru Technological University, Kakinada, Andhra Pradesh, India.

Department of Civil Engineering, Jawaharlal Nehru Technological University, Hyderabad, Telangana, India.

D. S. V. S. M. R. K. Chekravarty* , A. Mallika, P. Sravana*, Srinivasa Rao****

,- Department of Civil Engineering, Jawaharlal Nehru Technological University College of Engineering, Hyderabad, India.

Department of Civil Engineering, Vallurupalli Nageswara Rao Vignana Jyothi Institute of Engineering & Technology, Telangana, India.

* Department of Civil Engineering, Basaveshwar Engineering College, Bagalkot, Karnataka, India.

** Manipal Institute of Technology, MAHE, Manipal, Karnataka, India.