庞岩峰，赵阳，董石麟

（浙江大学空间结构研究中心， 杭州 310058）

［摘要］杭州火车东站站房钢屋盖采用由变椭圆截面斜钢柱和钢管格构斜柱支承的大跨度钢管空间桁架结构，各类空间相贯节点构造复杂。为全面了解复杂节点的受力性能，检验其强度是否满足设计要求，同时验证有限元分析模型的可靠性，对位于屋盖桁架、格构斜柱、单层椭球面网壳等不同位置的若干关键节点进行了试验研究。在简要介绍试验节点设计、加载装置、加载制度及测点布置方案的基础上，给出了主要试验结果及有限元分析结果。研究结果表明，各类节点均具有良好的承载能力，节点设计安全可靠，弹塑性非线性有限元分析可以较好地模拟试验节点的受力性能。

［关键词］杭州火车东站； 空间钢管桁架结构； 钢管相贯节点； 试验研究； 极限承载力； 有限元分析

中图分类号：TU3923，TU317文献标识码：A文章编号：1002848X(2013)07008206

Experimental research and finite element analysis on tubular joints of Hangzhou East Railway Station

Pang Yanfeng, Zhao Yang, Dong Shilin

(Space Structures Research Center, Zhejiang University, Hangzhou 310058, China)

Abstract:The roof structure for the main building of Hangzhou East Railway Station adopts a longspan spatial steel truss supported by inclined elliptical steel columns with variable cross sections and inclined tubular lattice steel columns. Spatial tubular joints in this structure have complicated configurations. In order to investigate the structural behavior of the complex joints, to test whether their strengths meet the design requirements and to verify the reliability of the finite element model, experiments were carried out on several key joints located at the roof truss, the inclined lattice columns and the singlelayer ellipsoid reticulated shell respectively. Followed by a brief introduction on the test joint design, loading device, loading procedure and measuring point layout scheme, the main experimental results and the corresponding finite element results were described. It is shown that, all test joints have good bearing capacity, the design of joints is safe and reliable, and the elastoplastic nonlinear finite element analysis can simulate the bearing behavior of the test joints satisfactorily.

Keywords:Hangzhou East Railway Station; spatial steel truss structure; tubular joint; experimental research; ultimate bearing capacity; finite element analysis

通讯作者：赵阳，教授，博士生导师，Email:ceyzhao@aju.edu.cn。

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