3-D Inelastic Response of R/C Structures

该项目得到了91财年研究启动奖(RIA)计划的支持。本研究的目的是对钢筋混凝土(R/C)结构的非比例变形对弹塑性的不利影响进行三维研究R/C成员的回应。包括用于模拟混凝土的非弹性实体单元和代表钢筋的弹塑性杆单元的有限元模型将用于研究轴向变形和侧向变形之间的复杂相互作用。作为一个案例，将评估ICS大楼在1979年10月15日帝国谷地震中的反应。还将在要素一级进行进一步的参数研究，以增进知识并满足对力-位移详细信息的需要。钢筋混凝土柱在轴向和侧向荷载非耦合波动作用下的响应。本项目的研究成果将有助于加深对钢筋混凝土结构和构件的循环性能的认识，并对钢筋混凝土结构的抗震设计实践产生一定的影响。

This project is supported under the Research Initiation Awards (RIA) Program, FY 91. The objective of this research is to perform a 3- D study of reinforced concrete (R/C) structures on the adverse effects of nonproportional deformations on the inelastic response of R/C members. A finite element model which includes an assemblage of inelastic solid elements to model the concrete and elastic-plastic bar elements representing the reinforcing steel will be used to study the complex interaction between the axial and lateral deformations. As a case study, the response of ICS Building during the Imperial Valley Earthquake of Oct. 15, 1979 will be evaluated. Further parametric study at the elements level will be also performed to advance the knowledge and to satisfy the need for detailed information on the force-displacement response of R/C columns under uncoupled fluctuation of axial and lateral loads. The results of this project are expected to improve the understanding of the cyclic behavior of R/C structures and members, and to impact the seismic design practices of R/C structures.