梁式框支剪力墙结构位移的抗风可靠性分析

Wind resistance reliability analysis of top displacement of frame-supported shear wall with beam-type transfer

文章以梁式转换框支剪力墙的顶点位移为研究对象,选择3种转换层及下部与上部若干层的不同等效侧向刚度比和3种不同转换层位置作为影响因素,在《工程结构可靠性设计统一标准》(GB 50153—2008)给出的年最大风压模型的基础上,结合《高层建筑混凝土结构技术规程》(JGJ 3—2010)对等效侧向刚度比、转换层位置以及框支剪力墙顶点位移的规定,得到梁式框支剪力墙顶点位移在最大风压模型下的位移失效概率及其可靠度指标,为梁式转换框支剪力墙在风荷载作用下结构位移的控制提供一种新的思路。

The top displacement of the frame-supported shear wall with beam-type transfer is studied. In view of three kinds of different equivalent lateral stiffness ratio of transfer storey;s lower and upper structure and three kinds of different transfer storey positions, and on the basis of the annual maxi- mum wind pressure model by the Unified Standard for Reliability Design of Engineering Structures （GB 50153-2008） and the provisions of equivalent lateral stiffness ratio, transfer storey position and top displacement of flame-supported shear wall by the Technical Specification for Concrete Structures of Tall Building（JGJ 3-2010）, the top displacement failure probability and the reliability index of the frame-supported shear wall with beam-type transfer under maximum wind pressure model are ob- tained. The study can provide a new idea for the control of top displacement of the frame-supported shear wall with beam-type transfer under wind load.