RC-加气混凝土砌块组合墙加固框架结构抗震性能与设计方法

项目名称： RC-加气混凝土砌块组合墙加固框架结构抗震性能与设计方法

项目编号： No.51308522

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 建筑科学

项目作者： 郭猛

作者单位： 中国建筑科学研究院

项目金额： 25万元

中文摘要： 研究震后受损、因设防烈度调整或设防分类标准调整而导致抗震能力不足的框架结构的整体抗震加固方法，已成为当前结构工程领域的一个重要研究课题。本项目在RC-加气混凝土砌块组合墙研究成果的基础上，提出并研究RC-加气混凝土砌块组合墙加固框架结构的整体抗震加固方法，结合试验研究、数值模拟与理论分析，重点解决以下关键问题：（1）通过模型试验，研究RC-加气混凝土砌块组合墙加固框架的抗震性能及破坏机制；（2）分析RC-加气混凝土砌块组合墙的刚度退化规律并提出其侧向刚度折减系数，探讨组合墙加固框架的剪力分配率及受剪承载力计算方法；（3）基于试验结果及复合材料力学理论，提出组合墙加固框架的弹性刚度模型，初步建立RC-加气混凝土砌块组合墙加固框架结构的实用设计方法。本项目旨在揭示组合墙加固框架后两者的协同工作机理，为我国城镇地区量大面广的普通框架结构提供一种经济实用、效果明显的整体抗震加固方法。

中文关键词： 框架结构；RC-加气混凝土砌块组合墙；加固；抗震性能；设计方法

英文摘要： In recent years, study on the new overall seismic reinforcement method for the frame structure has been important research topic in structural engineering field since the anti-seismic ability of many frame structures was substandard due to damage by the earthquake, the seismic fortification intensity adjustment or the seismic fortification criterion adjustment. Based on the previous research about RC-aerated concrete block composite wall, the overall seismic reinforcement method for frame structure using RC-aerated concrete block composite wall is proposed and researched. In this project, we aim to (1) investigate seismic performance and failure mechanism of frame strengthening by composite walls using the model test; (2) propose the lateral stiffness reduction coefficient of the wall by analysis stiffness degradation law, and discuss horizontal shear distribution law between the frame and the composite wall and the calculating method of the shear bearing capacity; (3) establish elastic stiffness model of the frame strengthening by the composite wall, based on the test results and the composite material mechanics theory, and explore the practical design method about frame structure strengthening by composite walls of RC-autoclaved aerated concrete blocks. As a result, a financially viable frame structure overall

英文关键词： frame structure；RC-autoclaved aerated concrete block composite wal；reinforcement；Seismic performance；Design method