基于有限基础刚度的框架-剪力墙结构抗震设计  

Seismic design of frame-shear wall structures with finite foundation stiffness

作　　者：傅学怡[1,2] 邸博[1] 

机构地区：[1]哈尔滨工业大学深圳研究生院,广东深圳518055 [2]深圳大学,广东深圳518060

出　　处：《土木工程学报》2014年第4期29-37,共9页China Civil Engineering Journal

基　　金：国家自然科学基金(90715012)

摘　　要：从框架-剪力墙结构协同工作基本微分方程入手,推导基于有限基础刚度的框架-剪力墙结构侧移刚度以及水平荷载作用下的侧移和内力计算方法。重点研究剪力墙下和框架柱下基础刚度对框架-剪力墙结构侧移刚度、最大层间相对水平位移及内力分布的影响规律,揭示现行规范对框架-剪力墙结构框架剪力调整的必要性。提出框架-剪力墙结构合适基础刚度的理念和确定方法,有利于进一步完善高层建筑抗震设计。分析结果和震害情况表明,剪力墙下基础刚度退化,框架-剪力墙结构在水平荷载作用下内力重分布显著,框架内力沿竖向分布有所增大,特别是底层框架柱剪力、弯矩急剧增大,应引起足够重视。Based on the basic differential equation, the analysis method for lateral displacement and internal force distribution in frame-shear wall structures with finite foundation stiffness is presented. The effects law of foundation stiffness on lateral stiffness, maximum story drift, and redistribution of internal forces in frame-shear wall structures are investigated, which proves the necessity for adjustment of frame-bearing shear force in the existing specifications. The concept and calculation method of appropriate foundation stiffness for frame-shear wall structures are proposed, which will contribute to structural seismic design of high-rise buildings. Analysis results and real earthquake damage show that if the foundation stiffness under wall degenerates, the forces in walls will drop while the internal forces of frames will increase. This phenomenon is particularly obvious for first-floor frame columns, so special attention should be paid.

关 键 词：框架-剪力墙结构 基础刚度 侧移刚度 内力分布 剪力调整 

分 类 号：TU318[建筑科学—结构工程] TU973.31