Different types of buildings suffer different degrees of damage during earthquakes and the same has been studied here. 1. MUD AND ADOBE HOUSES: Unburnt sun dried bricks laid in mud mortar are called adobe construction. Mud houses are the traditional construction, for poor and most suitable in view of their initial cost, easy availability, low(…)
Earthquake engineering deals with the study of earthquake forces and its effects on the buildings and structures, so that earthquake resistant buildings and structures can be built to prevent loss of life and property during earthquakes.
This section deals with the study of forces of earthquakes, magnitude and energy released, earthquake resistant design technique, damage caused due to earthquake on structures, design philosophy, architectural features, ground shaking, seismic zones, base isolation method, earthquake resistant design philosophy, guidelines, and estimation of damage and collapse of structures and buildings.
MULTISTOREY REINFORCED CONCRETE BUILDINGS DESIGN A large number of reinforced concrete multistoreyed frame buildings were heavily damaged and many of them collapsed completely in Bhuj earthquake of 2001 in the towns of Kachchh District (viz., Bhuj, Bhachao, Anjar, Gandhidham and Rapar) and other district towns including Surat and Ahmedabad. In Ahmedabad alone situated at more(…)
A seismic design of high rise buildings has assumed considerable importance in recent times. In traditional methods adopted based on fundamental mode of the structure and distribution of earthquake forces as static forces at various stories may be adequate for structures of small height subjected to earthquake of very low intensity but as the number(…)
The performance-based seismic engineering (PBSE) produces structures with predictable seismic performance. This approach is not new. Using this approach / model Turbine, Airplanes & Automobiles are made. In these applications one or more prototype are built and subjected to extensive testing. To incorporate the lessons learned from the experimental evaluations the design and manufacturing process(…)
The earthquake resistance of small buildings may be increased by taking some precautions and measures in site selections, building planning and constructions as explained below: 1. Site Selection for small buildings: The building constructions should be avoided on (a) Near unstable embankments (b) On sloping ground with columns of different heights (c) Flood affected areas(…)
Earthquake resistant building design guidelines are provided by set of Indian Standard codes (IS Codes). After observing Indian earthquakes for several years Bureau of Indian Standard has divided the country into five zones depending upon the severity of earthquake. IS 1893-1984 shows the various zones. The following IS codes will be of great importance for(…)
Base Isolation Method Conventional Construction Practice assumes Fixed Base Structures The Dynamic Characteristics of Fixed Base Structures are determined by the general characteristics of the structural system The Designer can only slightly adjust those Dynamic Characteristics As a matter of fact, most common Building Structures have unfavorable Dynamic Characteristics that result in increased Seismic Response(…)
The following types of damage are quite common in reinforced concrete buildings: Sliding of roofs off the supports Where the beams simply rest on walls or columns, they are bound to slide, when the earthquake intensity exceeds the frictional resistance and many times leave the support and fall down, particularly if the bearing length is(…)