地铁上盖建筑楼层侧向刚度比控制方法研究  

Research on lateral stiffness ratio control method for subway upper cover buildings

作　　者：朱春明 Zhu Chunming(Shenzhen Metro Group Co.,Ltd.,Shenzhen 518026,China)

机构地区：[1]深圳市地铁集团有限公司

出　　处：《建筑结构》2018年第15期30-36,共7页Building Structure

摘　　要：地铁上盖建筑底部多为大柱网、大层高的轨道交通基地,上部为小开间、小层高的住宅或办公楼,易在底部楼层形成刚度薄弱层。总结了此类建筑结构设计特点,对部分国内已建、在建地铁上盖建筑的结构体系、转换形式进行了统计,对因底部楼层刚度比不足而采取的措施进行统计与分类;在此基础上对平台上下层层刚度比不满足规范要求的解决方案进行了讨论和建议。提出了楼层侧向刚度计算时应竖向分区段采用不同计算方法。在对底部框架结构侧向刚度影响因素的分析基础上,对不同增加底层与上一层层间侧向刚度比措施的有效性进行了分析和对比。结果表明,增加1层顶梁截面宽度或高度的措施基本无效;对1层柱加强的相关措施效果明显,其中1层柱上下两端加腋加强措施最为有效。The bottom of the subwayupper cover buildings is always a subwaydepot base with large column grid and a large story height. The upper part includes residential or office building with small opening and small story height,and it is easy to form a stiffness weak layer at the bottom floors. The design characteristics of this kind of building structure were summarized,and the structural systems and transformation forms of some subway upper cover buildings which are either under construction or finished in China were counted. The measures taken to solve the problem of insufficiency of the stiffness ratio of the bottom floor were counted and classified. On this basis,the discussion and suggestion were carried out for the problem of the stiffness ratio between the upper and lower layers on the platform which is not satisfied with the standard requirements. It was suggested that different calculation methods should be adopted in the vertical section of the floor when the lateral stiffness was calculated. On the basis of the analyses of the influence factors of the lateral stiffness of the bottom frame structure,the effectiveness of the measures to increase the lateral stiffness ratio between the bottom and the upper layer was analyzed and compared. The results show that the measures to increase the width or height of the cross section of the first story top beam are basically invalid,and the measures to strengthen the first story columns are obvious,and the measures of strengthening the upper and lower ends of the first story columns and strengthening the armpit are the most effective.

关 键 词：地铁上盖建筑 侧向刚度比 竖向不规则 车辆段 层间隔震 

分 类 号：TU318[建筑科学—结构工程]