（奥雅纳工程顾问， 上海 200031）

［摘要］上海某项目地铁上盖综合体贯通12，13号地铁车站，其地下空间结构与车站连成整体且不设缝。设计难点一方面在于办公塔楼紧邻地铁车站且局部裙楼直接坐落在地铁车站上方，需谨慎考虑上盖综合体对地铁车站的沉降影响；另一方面主体结构存在扭转不规则、抗侧力构件不连续、塔楼偏置等多项超限。详细介绍了地铁上盖综合体的结构体系，以及针对超限部分所采取的构造措施、基础设计、沉降控制及减小对地铁附加影响的措施。地铁的附加沉降对上部结构尤为敏感，应尽可能考虑减轻上部结构自重，优化结构布置；可通过合理的桩基布置，采取桩尖注浆等手段减小基础沉降，从而减轻对地铁的附加影响。

［关键词］地铁上盖； 结构设计； 基础设计； 不均匀沉降； 桩端注浆

中图分类号：TU318文献标识码：A文章编号：1002-848X(2017)14-0019-06

Structural design of a complex building project over the subway station in Shanghai

Sun Lu

(Arup, Shanghai 200031, China)

Abstract:The complex building project over the subway station in Shanghai is located at the intersection of Shanghai metro line 12 and 13 stations, and its underground space structure is connected with the subway station as a whole without joints. One of the design difficulties is that the office tower is close to the subway station and part of podium is sitting right above subway station. The influence of the complex building over the subway station on the settlement should be considered carefully; on the other hand, the main structure has many out-of-code items including torsional irregularities, discontinuous lateral force resistance components and eccentrically placed tower building. The structural system of the complex building over the subway station, as well as the construction measures against out-of-code items, foundation design, additional influence of settlement control and reduction on the complex building over the subway station  were introduced. According to the study, the building over the subway station is especially sensitive to the additional settlement of the subway station brought about by superstructure, so the design should reduce the weight of the structure as far as possible and optimize the structural arrangement. Besides, the additional influence on the subway station can be reduced by the reasonable pile foundation arrangement with pile end grouting measure to reduce settlement of the foundation.

Keywords:building over the subway station; structural design; foundation design; differential settlement; pile end grouting

作者简介：孙璐，硕士，工程师，Email：lu.sun@arup.com。