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
Study on Strength Properties of Lightweight Expanded Clay Aggregate Concrete
A Step By Step Illustrative Procedure to Perform Isogeometric Analysis and Find the Nodal Displacements for a Two Dimensional Plate Structure
Lateral - Torsional Buckling of Various Steel Trusses
Comparative Study on Methodology of Neo-Deterministic Seismic Hazard Analysis Over DSHA and PSHA
A Step by Step Procedure to Perform Isogeometric Analysis of Beam and Bar Problems in Civil Engineering Including Sizing Optimisation of a Beam
Investigation on the Properties of Non Conventional Bricks
Analysis on Strength and Fly Ash Effect of Roller Compacted Concrete Pavement using M-Sand
Investigation on Pozzolanic Effect of Mineral Admixtures in Roller Compacted Concrete Pavement
Effect of Symmetrical Floor Plan Shapes with Re-Entrant Corners on Seismic Behavior of RC Buildings
Effect of Relative Stiffness of Beam and Column on the Shear Lag Phenomenon in Tubular Buildings
The behavior of the building mainly depends on its overall shape, size, and geometry in the event of an earthquake. As irregular floor plans are more vulnerable to earthquakes, they are not recommended in seismic prone regions, but still widely used everywhere. In this present study, the seismic behavior of RC buildings is analyzed using linear dynamic Time History Analysis considering the Olympia (1949) earthquake ground motion data as input. Various RC buildings with different floor plan shapes having re-entrant corners (L, C) with increasing amount of irregularity in terms of A/L ratio are considered for investigation. The various response parameters, such as base shear, story drift, and top storey displacements are observed and some useful conclusions are drawn. For the present research, ETABS 2015 [1] software has been used as modeling and analysis tool.
An earthquake is an inevitable natural calamity which has drastic negative effects pertaining more on infrastructure that exists. In the lifespan of a building, it is one of the phenomena that cannot be prevented from its occurrence. Thus, it poses a great challenge for structural engineers to protect the buildings along with safeguarding the life of humans and animals during this natural event. With the advent of time, designers have incorporated the usage of smart technologies in the projects undertaken. These efforts are in purview of keeping the structures safe during earthquake and at the same time, managing the cost of structure as well. The cost can be reduced by selective analysis of materials to be used in addition to the integration of smart technology. This will lead to low cost and durable solution for structures to be protected against earthquake, thereby reducing the risk of loss of lives. To study the effect of one such smart technology i.e. usage of 'spring isolator' as a shock absorber for waves generated because of underground movements has been studied. Keeping in mind the limits of developing nations, more often populated with lower and middle income groups, it demands for solutions that are more dedicated to this section of society. Though, the implementation of earthquake resistant methods to safeguard the structures is of utmost concern, people raise the issue of cost to be borne while installing there of homes Therefore, it necessitates the efforts to have low cost technology that can be adopted by lower groups as well. To highlight the effect of cost constraints, a comparison has been made between the traditional and newer low cost technologies in this paper.
This paper is a continuation of the research work on Topology optimization of continuum structures using Firefly Algorithm. Tuning of parameters for meta-heuristic algorithms have been one of the emerging areas of research. The goal is to find a global minimum for an optimization problem in a d-dimensional space. Complex domains in structural engineering may require tuning of parameters to reduce the overall computational effort. In this paper, the main focus is on finding an optimum set of parameters required to perform topology optimization for a design domain. Few problems in the literature have been solved and the results were compared.
Durability is one of the key parameters of reinforced concrete structure which gives the idea to withstand the structure against load, pressure, and atmospheric conditions. There are several factors that effect the durability which are permeability, sulphate attack, Chloride, etc. and in this series, corrosion of reinforced concrete is also one of the most important factors that may cause damage of reinforced concrete structure. Due to the development of non-destructive technology, it becomes very easy for the condition assessment of concrete structures. This paper presents a test to perform the durability assessment in the RCC beam with electro mechanical impedance method by using piezoelectric material. In this test, pzt is bonded to the surface of beam and the pzt –structure interaction is captured in the form of admittance signature consisting of conductance and susceptance extracted to detect the level of damage. The experimental results show that the admittance signature is very effective in detecting the durability of concrete structure.
Due to increase in the demand of soil stabilization with the waste by-products from the industry as well as from the municipal waste, the stabilization of soil has become more economical for the purpose of construction. Therefore, in this paper, an attempt has been made to study the effect of Rice Husk Ash (RHA) on strength characteristics of black cotton soil. The treated samples are prepared by mixing various proportions of rice husk ash (i.e. 2%, 5%, 7.5%, 10%, 15%, and 20%). The basic tests like specific gravity (G), Hydrometer test, Atterberg's limit, and compaction test have been conducted for classification of the soil and to study the behaviour of soil with the addition of RHA. The results showed that the Optimum moisture content increases with the addition of RHA and the drop in the Liquid limit, plastic limit, plasticity Index, and maximum dry density have been observed with the increase in the percentages of RHA. The strength of the 2 natural soil have been obtained as 0.62 Kg/cm and with the increase in RHA as an additive, the maximum strength have 2 2 been obtained at 15% RHA of 1.26 kg/cm , but further increase shows a decreasing trend of strength with 1.18 kg/cm for 20% RHA.
The effect of infill walls on the building is generally neglected in the analysis. In fact, an infill wall contributes to the lateral strength and stiffness of the structure. Seismic response analysis of multi-storey building frame with infill was done by modeling the infill wall as an equivalent diagonal strut. For the equivalent diagonal strut, the thickness is taken equal to the thickness of the wall and width of strut as per “Equivalent strut method”. The comparison of seismic responses is done for the multi-storied buildings with infill as an equivalent diagonal strut using linear and non-linear analysis. ETABS software is used for the present study.