（上海中森建筑与工程设计顾问有限公司, 上海 200062）

［摘要］该工程是一栋大底盘多塔超限高层建筑，为上海市首个预制装配式商业综合体，单体预制率为25-5%，结构体系为钢筋混凝土框架结构。场地内存在既有保护性厂房建筑，通过型钢混凝土托梁转换形成大空间结构，与厂房建筑彻底脱开，既保留了历史保护建筑，又在其上方搭建了三层商业楼层。厂房区域新建建筑物的基础地震水平作用传递也是难点之一，通过现场放样实测，使新建建筑物的基础连系梁有效避开了厂房基础，将水平力传至地下室顶板。项目为超限结构工程，为保证重要构件在中震及大震下的安全，对部分构件进行了性能化设计。最后通过可视化三维建模，有效解决了现场钢筋碰撞等诸多问题。

［关键词］超限高层建筑； 多塔结构； 型钢混凝土转换梁柱； 预制装配式商业综合体； BIM； 老厂房改造

中图分类号：TU375-4, TU334文献标识码：A文章编号：1002-848X(2019)15-0018-06

Structural design of a prefabricated commercial complex project in Shanghai

Jin Song, Chu Wenrong, Zhang Zhuo, Huang Chengshuang, Wu Chun

(Zhongsen Architectural & Engineering Designing Consultants Ltd., Shanghai 200062, China)

Abstract:The project is a over-limit high rise building with large secondary storey and multi-tower，and it is also the first prefabricated commercial complex in Shanghai. The structural system of this project is reinforced concrete frame structure with a prefabrication rate of 25.5%. Large space structure is created through steel reinforced concrete joists to isolate the origin building, so that the origin historically buildings can be retained, and in the meantime a three-storey commercial building is built above, The horizontal force transfer of the foundation of the new structure is one of the main difficulties of this project. Through field lofting and measurement, the coupling beam of foundation of the new building effectively dodges the foundation of origin factory and transmits the horizontal force to the roof of the reservoir. On the other hand, performance-based design is carried out in order to ensure the safety of important structural components under moderate and large earthquakes. Unlike the traditional cast-in-place frame structure design, the weight of prefabricated members, joint connection structure, component hoisting, transportation, stacking and other factors have to be considered at the preliminary design stage. Besides, the reinforcement of component is also quite different from that of cast-in-place structure. Adopting visualized three-dimensional building information modeling, many problems, such as steel bar collision et al., are effectively solved.

Keywords:over-limit high-rise building; multi-tower structure;  steel reinforced concrete transfer  beams and columns; pre fabricated commercial complex; BIM; reconstruction and reinforcement of existing factory

作者简介：金松，学士，高级工程师，一级注册结构工程师，Email：jinsong@shh.cadg.cn。