Showing papers on "Earthquake resistant structures published in 1971"
01 Sep 1971
TL;DR: A series of four tests were conducted on full-size precast, prestressed concrete beam-column assemblies under reversed cyclic loading of high intensity as mentioned in this paper, and it was concluded that large post-elastic deformations can be attained in the members, but only once the concrete in the compression zone has commenced to crush and hence when structural damage has been incurred.
Abstract: ACI JOURNAL I SEPTEMBER 1971 A series of four tests were conducted on full size precast, prestressed concrete beam-column assemblies under reversed cyclic loading of high intensity. The test variables included the amount of transverse confining steel for ductility and the position of the plastic hinge in the members. It was concluded that large post-elastic deformations can be attained in prestressed concrete members and that the energy dissipation at large deformations can be considerable, but only once the concrete in the compression zone has commenced to crush and hence when structural damage has been incurred.
23 citations
TL;DR: In this paper, some aspects of the earthquake design problem are discussed, such as, ground acceleration, response of structures, influence of damping, frequency content of ground motion, failure characteristics, and effect of foundation.
Abstract: The high degree of safety required for nuclear power plants has given prominence to the problems of earthquake-resistant design. Extreme conservatism can lead to overly large factors of safety. Certain aspects of the earthquake design problem are discussed, such as, ground acceleration, response of structures, influence of damping, frequency content of ground motion, failure characteristics, and effect of foundation. Recommendations are made for research that would lead to more economic design.
8 citations
TL;DR: In this article, a method to evaluate the maximum flexural response of a soil-structure system when subjected to seismic excitation is presented, where the flexible foundation medium is assumed to be represented by a homogeneous, isotropic, elastic half space whose dynamic properties can be characterized by stiffness and associated damping constants.
Abstract: A method to evaluate the maximum flexural response of a soil-structure system when subjected to seismic excitation is presented. The flexible foundation medium is assumed to be represented by a homogeneous, isotropic, elastic half space whose dynamic properties can be characterized by stiffness and associated damping constants. The structure is an elastic single-story building situated on the surface of the foundation medium. Investigation into the response of numerous soil-structure systems leads to a set of design curves. When used in conjunction with the appropriate seismic response spectra these curves permit the maximum flexural response of the soil-structure system to be determined with relative ease. The maximum flexural response may be increased or decreased when compared to the response of the same structure on a rigid foundation.
4 citations