Abstract

Natural disasters like earthquake, landslide, flood, drought, cyclone, forest fire, volcanic eruption are quite common in different parts of the globe. These natural disasters lead to the loss of life, property damage and socio-economic disruption. Earthquakes are one of the worst among the natural disasters. Seismic zonation map given in IS 1893:2002 shows that India is highly vulnerable for earthquake and over 60% of India is prone to moderate to major earthquakes. During past century, India has witnessed more than 650 earthquakes of magnitude greater than 5 and during past 15 years, 6 earthquakes of magnitude over 6. From recent earthquakes, it is very well understood that lack of awareness is one of the contributing factors for huge casualty losses. In order to increase the awareness about the effects of earthquakes among professionals involved in construction, it is necessary to make them understand the concepts of structural dynamics and earthquake engineering. For this, we have developed a software tool called “Interactive Structural Dynamics Learning Kit (ISDLK)” for explaining structural dynamics in a simple manner. For convenience in explaining the concepts, we divided the tool into six modules. Each module contains few experiments with good G.U.I. In these modules, user can input the value and he/she can find the desired results with explanation using graphical diagram. At the end of sixth module, user can understand the complete dynamic behavior of a structure. ISDLK aims to help students, architects and design professional in understanding structural dynamics.

Abstract

Earthquake problems in India need no introduction. From recent earthquakes, it is very well understood that lack of awareness is one of the contributing factors for huge casualty losses. In order to increase the awareness about the effects of earthquakes among professionals involved in construction, it is necessary to make them understand the concepts of structural dynamics and earthquake engineering. To address this issue, we have developed a software tool named Virtual Structural Dynamics Laboratory. Using this tool, a person with some knowledge of structural engineering can be able to learn by himself the fundamentals of structural dynamics. For convenience in explaining the concepts, we divided this tool into four modules. Each module contains few experiments with good G.U.I. In these experiments, user can find the explanation with graphical diagram. At the end of fourth module user can understand the dynamic behavior of the structure. This software tool aims to help students, architects and civil engineers in understanding the principles of structural dynamics.

Abstract

When an active bedrock fault ruptures, the movement along the fault propagates through the overlying soil and produces zones of intense shear. If the fault movement propagates upto or near the ground surface, the damage to constructed facilities due to faulting, in conjunction with that induced by strong ground motion, can be significant. This paper contributes to the understanding of the response of soil deposits to the underlying bedrock fault displacement. In the conventional attenuation relationship, peak ground acceleration shows maximum value at the closest distance from the fault. However, in the real observations, sometimes it is found that the damage near to the surface fault is not maximum, instead it is high little away from the surface rupture zone. To understand the above-mentioned response of soil deposits, we attempted to develop a new application to Applied Element Method (AEM) by modeling the fault rupture zone. In this, we study the behavior of dip-slip faults. The effect of the slip velocity on the ground motion is studied first and then the attenuation of PGA in the near fault zone is studied. Effect of the material properties is also discussed.

Abstract

This paper presents a software tool for performing the static and dynamic analysis of regular and simple multi-storied structures. This analysis procedure is based on IS 1893:2002 (Part I), Criteria for Earthquake Resistant Design of Structures. This tool is a windows based software program developed in Visual Basic. The tool provides a userfriendly GUI for the calculation of base shear and its distribution over the height of the structure, depending on the input parameters. Usual input parameters are structural dimensions, type of structure, soil type, purpose of structure and location. Though this tool is simple, can be used for verification of design within short time. This tool is aimed to help students, architects and engineers during design of earthquake resistant structures.

Abstract

No Results Found