Seismic Performance of Flanged Masonry Shear Walls

砌体结构包括建筑物的很大一部分 在美国和世界上的建筑。 配筋砌体 在中等地震带和高地震带， 由于其具有明显的经济性、消防安全性、 建筑的灵活性和易于施工。 现状 砌体结构分析与设计，材料与 建筑技术无法准确预测 在地震荷载等横向荷载作用下的建筑行为。 在 美国，砖石建筑的设计和建造方法，规范和 标准依赖于工作应力方法的混合， 经验规则，以及确定允许的 应力值。 石膏也是一种复杂的建筑材料， 大量的设计和施工变量， 最终产品配置及其在地震载荷下的响应。 为了描述砌体房屋的地震反应， 有必要发展基本知识基础，以确定基本 符合安全和经济要求的设计方法。 本课题是一项理论和实验研究 翼缘砌体剪力墙的抗震性能。 的 理论研究开发了有效凸缘的预测模型 横向载荷下的宽度， 侧移滞回模型 包含独立位移分量的响应 由挠曲、剪切和基滑变形引起。 特别强调的是不对称强度， T形截面墙的刚度和延性特性 与蛛网平行 实验研究涉及 T形截面砌体墙的静态循环荷载试验和动态循环荷载试验 T形截面和矩形截面墙的振动台试验。 测试是在全尺寸元件上进行的，用于验证和 校准在理论研究期间开发的模型。 这 该项目是美国的一部分-日本Massimo协调计划 建筑研究和技术协调委员会 Massimo Research（TCCMAR）Program.

Masonry construction comprises a large portion of building construction in the U.S. and the world. Reinforced masonry construction use is increasing in moderate to higher seismic zones because of its apparent features of economy, fire safety, architectural flexibility and ease of construction. The present state of masonry structural analysis and design, and materials and construction technologies does not enable an accurate prediction of building behavior under lateral loads such as seismic loads. In the U.S., masonry buildings are designed and built with methods, codes and standards that rely upon a mixture of working stress methods, empirical rules, and questionable methods for determining allowable stress values. Masonry is also a complex building material because of the large number of design and construction variables which influence the final product configuration and its response under seismic loads. In order to describe the seismic response of masonry buildings it is necessary to develop the fundamental knowledge base to determine basic design methodologies consistent with safety and economic requirements. This research project is a theoretical and experimental investigation of the seismic performance of flanged masonry shear walls. The theoretical studies develop predictive models for effective flange width under lateral loading and also develop load-displacement component models for lateral hysteretic response that incorporates the separate displacement components resulting from flexure, shear and base-slip deformation. Particular emphasis is placed on the asymmetrical strength, stiffness, and ductility characteristics of T-section walls loaded parallel to their web. The experimental studies involve static cyclic load testing of T-section masonry walls and dynamic shake-table testing of T-section and rectangular section walls. The tests are on full-scale elements and are used to verify and calibrate the models developed during theoretical studies. This project is part of the U.S.-Japan Coordinated Program for Masonry Building Research and the Technical Coordinating Committee for Masonry Research (TCCMAR) Program.