（1 中衡设计集团股份有限公司, 苏州 215021; 2 江苏省生态建筑与复杂结构工程技术研究中心, 苏州 215021）

［摘要］苏州现代传媒广场是典型的城市综合体建筑，单体功能多样，地标造型独特。在该项目结构设计中采用了多种新型钢结构技术，总结了相关技术的研究分析与设计应用。其中针对40m跨度的大跨重载结构，项目组提出了新型开洞钢板墙-钢桁架结构体系，并通过理论分析和试验，系统研究了其力学性能，介绍了相应的设计方法；对设置在4个单体建筑之上的M形采光顶，采用隔震支座与预应力拉杆组合钢结构体系，解决了连接体受力复杂、差异变形的难题；对跨度40m、高差50m的屋面钢结构，基于应变能优化原理，采用了悬链状柔性结构体系；对25m大跨度钢楼梯，采用交叉张弦预应力结构体系完成设计，同时采用稳态分析法进行了人行舒适度验算。

［关键词］开洞钢板墙-钢桁架结构; 张拉空间钢结构; 应变能优化; 交叉张弦; 稳态分析法

中图分类号：TU352文献标识码：A文章编号：1002-848X(2019)01-0025-11

Research and application of new steel structure technology in Suzhou Modern Media Plaza

Zhang Jin1,2, Yang Lülei1,2, Gong Minfeng1,2, Lu Jianglong1,2

(1 ARTS Group Co.,  Ltd.,  Suzhou 215021, China;2 Jiangsu Engineering Institute of Ecological Building & Complex Structure, Suzhou 215021, China)

Abstract:Suzhou Modern Media Plaza is a typical urban complex building with diverse functions and unique landmark shape. In the structural design of this project, a variety of new steel structure technologies were adopted. The research, analysis and design application of related technologies were summarized. The project team put forward a new type of steel truss-steel plate wall with opening structure system for the large-span and heavy-load structure with 40m span, and through theoretical analysis and test, its mechanical properties were systematically studied, and the corresponding design methods were introduced; for M-shaped lighting roof set on four monolithic buildings, seismic isolation support and prestressed tie rod combination steel structural system were adopted, which solved the problem of complicated mechanism and differential deformation of the connected body; for roof steel structure with a span of 40m and a height difference of 50m, a catenary flexible structural system was adopted based on the principle of strain energy optimization; for 25m large-span steel staircase, the cross tension string prestressing structural system was  adopted to complete the design. The steady state analysis method was used to calculate the comfortableness of the pedestrian.

Keywords:steel truss-steel plate wall with opening structure; tensioned spatial steel structure; strain energy optimization; cross tension string; steady state analysis method

作者简介：张谨，研究员级高级工程师，一级注册结构工程师，英国注册结构工程师，Email: zhangjin@artsgroup.cn。