Framed Shearwalls in Earthquake

结构故障的经验 过去的地震表明， 剪力墙提供出色的 建筑物抗震设防 地区 相比于 悬臂剪力墙，框架 剪力墙有一个额外的 优势，因为墙 面板可以用作牺牲 吸收地震能量的元件 保护主结构 frame. 当框架剪力墙在 地震作用，墙板 在框架内， 剪切作用 相当大 争议已经在 过去关于有效性的 剪力墙 延展性 最近的实验 对钢筋混凝土的研究表明， 剪切延展性确实可以 在墙板中获得，如果 钢筋正确 设计了 另夕h 桁架模型理论的发展 可以预测剪切 延展性 这些实验和 理论的进步奠定了 向下的基础， 的科学治疗 框架剪力墙的性能。 这项建议是研究 框架墙板性能 受到单调，循环和 动态加载 这项研究是 旨在阐明 墙面板和框架 成员，以便产生效果 框架剪力约束 墙板的延展性可以 评估。 基于静态和 动态行为中观察到的 建议的测试，一个简单的方法， 将被开发用于设计 框架剪力墙 这项研究将在 联合国大学 美国休斯敦和 上海同济大学， 中国 它将成为美国的一部分- 中华人民共和国合作计划，附件3- 地震研究合作。 休斯顿大学将 研究单调和循环 框架墙板性能 使用通用面板测试仪。 框架墙板的动力试验 模拟地震作用将 在同济大学演出 用的是摇床。

Experiences of structural failures in past earthquakes have shown that shearwalls offer excellent protection for buildings in seismic regions. As compared to the cantilever shearwalls, the framed shearwalls have an additional advantage inasmuch as the wall panels can be used as sacrificial elements to absorb seismic energy and protect the main structural frame. When a framed shearwall is under earthquake action, the wall panels inside the frame are subjected to shearing action. Considerable controversy has been raised in the past regarding the effectiveness of wall panels in developing shear ductility. Recent experimental studies in reinforced concrete show that shear ductility can indeed be obtained in wall panels, if the reinforcement are correctly designed. Additionally, the development of truss model theories allows for the prediction of shear ductility. These experimental and theoretical advancements have laid down the foundation for a scientific treatment of the behavior of framed shearwalls. This proposal is to study the behavior of framed wall panels subjected to monotonic, cyclic and dynamic loading. The research is designed to clarify the interaction of the wall panels and the frame members, so that the effect of the frame constraints on the shear ductility of a wall panel can be evaluated. Based on the static and dynamic behavior observed in the proposed tests, a simple method will be developed for the design of framed shear walls. This research will be carried out jointly by the University of Houston in the United States and the Tongji University in Shanghai, China. It will be part of the US- PRC Cooperative Program, Annex 3 - Cooperation in Earthquake Studies. The University of Houston will study the monotonic and cycle behavior of framed wall panels using the universal panel tester. Dynamic tests of framed wall panels simulating earthquake action will be performed at Tongji University using a shaking table.