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Earthquake resistant structures

About: Earthquake resistant structures is a research topic. Over the lifetime, 1126 publications have been published within this topic receiving 27467 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, a design procedure for estimating shear demand for walls in medium-rise, reinforced concrete buildings that reflects observed behavior is proposed, supported by experimentally observed behavior, by modal analysis, and by nonlinear response-history analysis.
Abstract: For earthquake-resistant design of reinforced concrete structures, the shear force for frame elements is established on the basis of the proportions and flexural strength of the element according to the American Concrete Institute standard 318-89 (1989), the Applied Technology Council Standard 3-06 (1989), and the Uniform Building Code, published in 1988. In this paper, a similar procedure is proposed for walls in medium-rise, reinforced concrete buildings. Results of small-scale dynamic tests of nine- and ten-story structures with walls are presented to provide data with which to evaluate methods of estimating base shear. Maximum base-shear response during these tests consistently exceeded limit analysis estimates calculated assuming a linearly varying acceleration distribution. If the observed force distribution is used in estimating base shear, the limit analysis estimates are acceptable. The need to take into account variations of inertial force distribution with base-motion intensity is supported by experimentally observed behavior, by modal analysis, and by nonlinear response-history analysis. After discussing other factors that influence maximum base shear, such as strain rate, strain hardening, and systematic experimental error, a design procedure for estimating shear demand for walls that reflects observed behavior is proposed.

65 citations

Journal ArticleDOI
TL;DR: In this article, a model for predicting punching shear failures at interior slab-column connections was developed based on experimental results obtained at various universities and incorporated into a new RC slab element for the nonlinear analysis program, DRAIN-2DM, along with the desired unloading behavior when a punch occurs.
Abstract: A model for predicting punching shear failures at interior slab-column connections was developed based on experimental results obtained at various universities. This model has been incorporated into a new RC slab element for the nonlinear analysis program, DRAIN-2DM, along with the desired unloading behavior when a punch occurs. A four-story RC frame office building that experienced punching shear failures during the Northridge earthquake was evaluated using this new model and the occurrence of punching shear failures was successfully postcalculated for the ground motion recorded nearest the structure. The study building was evaluated for three ground motions scaled to the same peak ground acceleration. The building response varied for each record, but in general, it was found that the inclusion of punching shear failures can modify the overall building response in terms of drift, fundamental period, inelastic activity, and base shear distribution. In the case of the study building, the presence of the st...

65 citations

Journal ArticleDOI
TL;DR: In this paper, the authors evaluate the effects of two main variables: (1) the orientation of steel bars and (2) the percentage of steel reinforcement on the shear stiffness, shape of hysteresis loop, and energy dissipation capacity of reinforced concrete panels.
Abstract: In order to design reinforced concrete (RC) structures in earthquake regions, it is necessary to understand the behavior of RC panel elements subjected to reversed cyclic loading. This paper reports the testing of 12 reinforced concrete panels subjected to reversed cyclic shear stresses. The tests were carried out to evaluate the effects of two main variables: (1) the orientation of steel bars, and (2) the percentage of steel reinforcement. The test results showed that both variables have strong effects on the shear stiffness, the shape of the hysteresis loop, the shear ductility, and the energy dissipation capacity of a panel. Thus it is possible to design shear-dominant structures that are strong, stiff, and yet ductile by controlling the orientation of the steel bars and the percentage of steel in a panel.

64 citations

Book
07 Jan 1988
TL;DR: In this paper, the causes, strength, and effects of earthquakes are discussed and a design philosophy for earthquake resistant construction is proposed. But the earthquake resistance of specific structures is not discussed.
Abstract: Seismic Risk--The Causes, Strength and Effects of Earthquakes. Seismic Activity in a Regional Setting. Determination of Site Characteristics. Design Earthquakes. Earthquake Resistant Design Philosophy--Choice of Form and Materials. Seismic Response of Soils and Structures. Concrete Structures. Masonry Structures. Steel Structures. Timber Structures. Earthquake Resistance of Services and Equipment. Architectural Detailing for Earthquake Resistance. Appendix A: Earthquake Resistance of Specific Structures. Appendix B: Miscellaneous Information.

63 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20232
20223
202113
20209
201916
201813