北京某山地项目结构设计与分析综述

Summary on structural design and analysis of a mountain project in Beijing

北京某山地项目总建筑面积约92万m2,主体建筑由19栋叠拼别墅及5栋洋房组成,均为地上5层、主体高度150m,地下2层或3层。别墅和洋房均采用装配整体式剪力墙结构体系;各单体通过7个1层或2层地下车库连接。首先,根据工程概况及国家政策要求确定结构体系,并根据山地建筑特点对工程建设场地地质灾害进行评估;其次,结合场地实际情况对竖向设计方案进行相关论述;同时,对抗震设防烈度8度(020g)区土质边坡主体结构基础设计、边坡支护设计过程中的重难点及其解决方法进行具体陈述。研究及设计结果表明:结合台地高差通过选用合理的结构布置及计算措施,各子项计算指标可以较好地满足相关规范要求,结构设计安全、可靠。

The total construction area of a mountainous project in Beijing is about 92000m2,the main building consists of 19 stacked villas and 5 western⁃style houses,all of which are 5 floors above ground,the main height is 15.0m,and 2 or 3 floors underground.The villas and western⁃style houses adopt assembled monolithic reinforced shear wall structure system;each unit is connected through 7 underground garages of 1or 2 floors.Firstly,based on the project overview and national policy requirements,the structural system was determined,and the geological hazards of the construction site based on the characteristics of mountainous buildings was evaluated.Secondly,according to the actual situation of the site,the vertical design scheme was discussed.At the same time,the key and difficult points in the design of the main structure foundation and the support of the soil slope in the seismic fortification intensity 8 degree(0.20g)area,and the solutions were described in detail.The research and design results show that:combined with the platform height difference,by selecting reasonable structural layout and calculation measures,the sub⁃item calculation indexes can better meet the requirements of relevant specifications,the structure design is safe and reliable.