Seismic Behavior and Design of Hybrid Wall Systems

本研究将集中于通过详细的弹塑性动力分析来更好地了解混合墙体体系的地震反应。将考虑两种类型的混合墙体系，a)由实心或穿孔钢筋混凝土剪力墙和钢弯矩框架组成的结构体系，以及b)由钢梁耦合剪力墙和钢弯矩框架组成的结构体系。这项调查包括三个相互关联的部分。第一部分将专注于开发和现有的有限元程序，包括能够模拟墙板复杂行为的墙有限元。第二部分涉及利用现有条款设计若干原型混合墙系统。第三部分涉及使用开发的分析工具进行大量的非弹性动力分析。这些分析将集中在1)确定双肢剪力墙之间的最佳耦合程度，2)更多地了解剪力墙和弯矩框架之间的相互作用，3)建立面向设计的方法来确定墙和框架中的力分布，3)建立面向设计的方法来确定墙和框架中的力分布，以及4)评估目前推荐的混合墙体系及其构件的设计规定。本项目最重要的成果之一将是确定不同地震荷载水平和不同结构行为极限状态的性能指标。这些数据将对混合墙体系统基于性能的设计标准的未来发展具有不可估量的价值。该项目得到了NSF 94-154计划的第4年竞赛的支持。

9870927AbstractThis research will focus on developing a better understanding of the seismic response of hybrid wall systems through detailed inelastic dynamic analyses. Two types of hybrid wall systems will be considered, a) structural systems comprised of solid or perforated reinforced concrete shear walls and steel moment frames, and b) structural systems comprised of steel-girder-coupled shear walls and steel moment frames. The investigation includes three interrelated components. The first component will focus on development of and existing finite element program to include wall finite elements capable of simulating the complex behavior of wall panels. The second part involves the design of a number of prototype hybrid wall systems using currently existing provisions. The third component involves conducting a large number of inelastic dynamic analyses using the developed analytical tools. The analyses will concentrate on 1) identifying the optimal degree of coupling between coupled shear walls, 2) shedding more light on the interaction between shear walls and moment frames, 3) establishing design oriented methods for determining the distribution of forces in the walls and frames, 3) establishing design oriented methods for determining the distribution of forces in the walls and frames, and 4) assessing currently recommended provisions for the design of hybrid wall systems and their components.One of the most important products of this project will be the determination of performance measures for different levels of earthquake loading and for different limit states of structural behavior. This data will be invaluable for the future development of performance based designed criteria for hybrid wall systems.This project is supported under the 4th year competition of initiative NSF 94-154.