高层钢-混凝土混合结构弹塑性地震位移的工程实用计算

A Practical approach for estimating elastoplastic seismic displacements of tall steel concrete mixed buildings

本文针对目前高层建筑中常用的外钢框架-内混凝土核心筒混合结构体系的弹塑性地震位移的实用计算开展研究。在合理选取一定数量的地震记录及典型的结构形式的基础上,采用经实验检验的分析模型与计算程序,得到了钢-混凝土混合结构的弹塑性层间相对位移与主要结构参数之间的大致规律,并通过统计分析,得到了混合结构的弹塑性层间相对位移与各参数的定量关系,以此提出了进行罕遇地震下高层钢-混凝土混合结构弹塑性位移验算时的计算数表。

A practical approach for estimating elastoplastic seismic displacements of steel exterior frame concrete interior tube structure widely used in tall buildings at present in China is established in this paper. The relationship between elastoplastic relative storey drifts of steel concrete mixed buildings and primary structural parameters is obtained on the basis of statistical investigation on a class of typical structures subjected to various seismic excitations. A table of factors is proposed for calculating the elastoplastic relative storey drifts of mixed structural buildings to implement aseismic design requirement under severe earthquakes.