Force Displacement Models for Masonry Components

在美国和世界范围内，砖石建筑占建筑建筑的很大一部分。由于配筋砌体结构具有明显的经济性、防火安全性、建筑灵活性和施工简便性等特点，在中高地震区的应用日益广泛。目前的砌体结构分析和设计，以及材料和施工技术，无法准确预测建筑物在水平荷载(如地震荷载)下的行为。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、经验规则和确定许用应力值的可疑方法的混合。砌体也是一种复杂的建筑材料，其设计和施工变量众多，影响最终产品的构型及其在地震荷载作用下的反应。为了描述砌体建筑的地震反应，有必要建立基本的知识库，以确定符合安全和经济要求的基本设计方法。本研究旨在发展配筋砌体在地震荷载作用下之行为分析模型。研究结果将与其他两种建模方法相协调，即有限元模型和集中参数模型。本文采用力-位移模型方法对结构构件模型进行了研究。其他研究人员的实验数据将用于验证该模型。该项目是美日砖石建筑研究协调计划和砖石研究技术协调委员会(TCCMAR)计划的一部分。

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 to develop analytical models for the behavior of reinforced masonry under seismic loads. The results of the research is to be coordinated with two other approaches to modeling namely, finite element models and lumped parameter models. This research concentrates on structural component models using a force-displacement model approach. Other researchers' experimental data will be used to validate the model. 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.