强震作用下SRC-RC竖向混合结构体系抗震性能与设计计算方法研究

项目名称： 强震作用下SRC-RC竖向混合结构体系抗震性能与设计计算方法研究

项目编号： No.51208175

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 建筑环境与结构工程学科

项目作者： 伍凯

作者单位： 河海大学

项目金额： 25万元

中文摘要： 下部采用型钢混凝土（SRC）、上部采用钢筋混凝土（RC）的SRC-RC竖向混合结构同时具备SRC的耐震性与RC的经济适用性，具有良好应用推广前景。但未经合理设计的SRC-RC竖向混合结构沿竖向存在刚度突变，强震中容易产生损伤集中并出现明显薄弱层。为推动SRC-RC竖向混合结构发展，揭示其抗震行为并建立设计计算方法是急需解决的问题。本项目拟采用试验研究、理论分析与数值模拟结合的方式，研究SRC-RC竖向混合结构在强震作用下的抗震性能，揭示结构转换区域损伤演化规律与整体结构抗震性能的相关性，确定结构体系的典型损伤破坏模式及其参数控制方法，提出不同性能水准及其失效的定量化判别标准，建立耗能需求的分布规律与计算方法，并最终给出合理实用的设计方法与抗震构造措施。通过本项目研究，可解决SRC-RC竖向混合结构设计计算与工程应用中的关键难题，增强结构的抗震防灾能力，促进混合结构抗震设计理论与方法的发展。

中文关键词： 混合结构；型钢混凝土；抗震性能；静力弹塑性分析；塑性铰

英文摘要： SRC-RC hybrid structure adopts Steel Reinforced Concrete structure at bottom floors and Reinforced Concrete structure at the floors above, which has not only the merits of both structures but also the advanced prospect of application and popularization. But SRC-RC hybrid structure is easy to suffer serious seismic damage if no rational seismic design was applied, which is mainly due to stiffness mutation along building height. To promote the application and development of SRC-RC hybrid structure, seismic behavior needs to be revealed, the method of seismic design should be bring forward. This foundation will use the methods of experimental research, theoretical analysis and numerical simulation to study the performance of SRC-RC hybrid structure under strong earthquake. Relationship between seismic behavior of hybrid structure and damage evolvement of transfer area from Steel Reinforced Concrete to Reinforced Concrete will be revealed. Typical damage modes will be confirmed, parameters control method of damage modes will be established. Standard performance levels of SRC-RC hybrid structure and their disabled indexes will be put forward. The distribution of energy dissipation requirement and its calculation method will also be obtained. Based on the study, rational method of seismic design and configuration cha

英文关键词： hybrid structure；steel reinforced concrete；seismic behavior；static elastic-plastic analysis；plastic hinge