添加钢筋提高隔震结构高宽比限值的研究  

Research on the approaches to increase the height-width ratio with supplemental steel bar

作　　者：祁皑[1] 林云腾[1] 

机构地区：[1]福州大学土木建筑工程学院,福建福州350002

出　　处：《地震工程与工程振动》2005年第1期120-125,共6页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(50378020);福建省青年科技人才创新项目(2002J014)

摘　　要：提出了在边支座上添加竖向钢筋以提高隔震结构高宽比限值的构造措施;从方案的构造、添加钢筋的工作状态以及对隔震效果的影响等方面论证了该措施的可行性;基于《建筑抗震设计规范》(GB50011-2001),推导了添加竖向钢筋后隔震结构高宽比限值的公式;可行性论证和实际算例的计算结果表明,本方案技术可行、效果显著。A new way to increase the height-width ratio limitation of base isolation structure is proposed, which is to install steel bars near the rubber bearings located at the side columns to increase the tension strength indirectly. The feasibility of this proposal was investigated from the detailing requirements, the working performance of steel bar, and its influence on the isolation effectiveness, respectively. Based on the code for seismic design of buildings(GB50011-2001), the influence of the supplemental steel bar on height-width ratio limitation was researched theoretically and the corresponding formula was derived. The results from these formula show that the height-width ratio limitation can be increased more than 37%.

关 键 词：钢筋 隔震 高宽比 构造 周期 

分 类 号：P315.95[天文地球—地震学] P315.966[天文地球—固体地球物理学]