复杂高层建筑结构抗震性能评价方法研究

Research on Evaluation Method of Seismic Performance of Complex High-rise Building Structure

如何保证复杂高层建筑结构达到安全和经济的统一,是当前高层建筑结构领域的热点问题。本项目对复杂高层建筑结构抗震性能评价方法进行了系统研究,取得创新成果如下:首次提出了基于构件正截面承载力冗余分析的复杂高层建筑结构抗震性能评价方法;开发了用于结构弹塑性分析的混凝土本构关系子程序,建立了准确、高效的结构弹塑性时程分析方法,形成了基于弹塑性分析的结构抗震性能评价方法。提出了一种基于预设屈服模式的复杂高层建筑结构抗震性能化设计方法;给出了该方法的设计流程和软件实现方法。研究成果已在40余项重大工程项目中成功应用,并被相关规范采纳,对于提升我国复杂高层建筑结构的安全和经济性具有十分重要的作用。

How to achieve the unity of safety and economy for complex high-rise building structure has become a hot issue in the field of high-rise building.This project conducted a systematic research on the seismic performance evaluation methods of complex high-rise building structures,and the main achievements are as follows:For the first time,a seismic performance evaluation method based on redundant analysis of component section bearing capacity was proposed for the complex high-rise building structure.A material subroutine of the concrete constitutive relation was developed,an accurate and efficient elastoplastic time history analysis method was established,and a seismic performance evaluation method based on elasto-plastic analysis of structures was formed.A seismic performance-based design method based on preset yield modes was proposed for complex high-rise building structures,and the design process and software application method were given.The research achievements have been applied to more than 40 major engineering projects and have been adopted by relevant standard specifications,which could play an important role for improving the safety and economy of complex high-rise buildings.