（清华大学建筑设计研究院有限公司，  北京 100084）

［摘要］介绍了上海国家会展中心规模提升工程的结构特点和难点，在不改变原结构的抗震性能及抗侧力体系的原则下，将本规模提升工程分为多个独立结构单元，采取不同的结构方案和技术措施。重点介绍了展厅工程和桩基工程模块。夹层展厅作为提升工程的主体，具有大跨度、重荷载楼面、施工作业条件限制多等特点，采用了箱形钢框柱-双向钢桁架结构体系；钢结构杆件板材厚度达100mm，针对厚板焊接节点进行了专项性能试验研究；采用了一种新型的钢管桩成桩工艺，使用后实现了高频免共振、噪声小、无泥浆、挤土效应小、对土体几乎无扰动、对周边建筑影响小、施工速度快、对环境友好等效果；引入了BIM技术进行模拟碰撞设计，实现了在过程中动态解决潜在问题；介绍了16m标高处平台和坡道模块以及附楼加固工程模块，通过细致工作，运用常规方法很好地实现了功能要求。

［关键词］上海国家会展中心； 大跨度； 重荷载楼面； 钢桁架； 厚板焊接； 性能试验； 钢管桩；  高频免共振沉桩工艺； BIM技术

中图分类号：TU391文献标识码：A文章编号：1002-848X(2020)12-0046-07

Structural design of scaled lifting project of National Exhibition and Convention Center  in Shanghai

ZHU Tianrui, LI Guo, LIU Yansheng, REN Xiaoyong, GAO Xiang, CAI Weixin, LIU Chun

（Architectural Design & Research Institute of Tsinghua University Co., Ltd., Beijing 100084, China）

Abstract:The structural features and difficulties of the scaled lifting project of National Exhibition and Convention Center （NECC） in Shanghai were introduced. Under the principle of not changing the seismic performance and lateral force resistance system of the original structure, the scaled lifting project was divided into several independent structural units, and different structural schemes and technical measures were taken. The exhibition hall engineering and pile foundation engineering module were mainly introduced. As the main part of the lifting project, the mezzanine exhibition hall had the characteristics of large span, heavy load floor and many restrictions on construction conditions. It adopted the box steel frame column two-way steel truss structural system; the steel structure member plate thickness was up to 100 mm, and the special performance test was carried out for the thick plate welded joints; a new type of steel pipe forming process was adopted, and the high frequency resonance free was realized as well as low noise, no mud, small soil squeezing effect, almost no disturbance to soil, little impact on surrounding buildings, fast construction and environment-friendly effects; BIM technology was introduced to simulate collision design to realize dynamic solution to potential problems in the process; 16m elevation platform and ramp module as well as annex building reinforcement engineering module were introduced, and the conventional method achieved the functional requirements well through careful work and application.

Keywords:National Exhibition and Convention Center  in Shanghai; large span; heavy load floor; steel truss structure; thick plate welding; performance test; steel pipe pile; high frequency resonance free pile sinking process; BIM technology

作者简介：祝天瑞，硕士，高级工程师，一级注册结构工程师，Email:zhutianrui@thad.com.cn。