（1 天津大学建筑工程学院， 天津  300072； 2 天津大学滨海土木工程结构与安全教育部重点实验室， 天津  300072）

［摘要］简要回顾了张弦结构的提出和发展过程以及在我国张弦结构研究的开端。总结了近二十年来我国代表性张弦结构体系的最新工程应用。对张弦结构撑杆上节点、撑杆下节点和焊接球节点的研究现状和存在问题进行了总结，对拉索构件的抗弯性能、应力松弛和高温后力学能问题的研究进展和存在问题进行了论述。最后通过概述张弦结构的整体发展情况，对其发展前景和研究方向给出建议。

［关键词］张弦结构； 拉索； 关键节点； 索撑节点； 工程应用

中图分类号：TU399文献标识码：A文章编号：1002-848X(2019)19-0065-11

Research progress of key joints and components and engineering practice in beam string structure

Chen Zhihua1，2

(1 School of Civil Engineering， Tianjin University， Tianjin 300072， China; 2 Key Laboratory of Coast Civil Structure Safety of Ministry of Education， Tianjin University， Tianjin 300072， China)

Abstract:The advancement and development of beam string structures and the beginning of research on beam string structures in China was briefly reviewed. The latest engineering applications of representative beam string structures in China in recent 20 years were summarized. The research status and existing problems of the upper, lower and welded spherical joints of beam string structure were summarized, and the research progress and existing problems of bending resistance performance, stress relaxation and mechanical properties after high temperature of cable members were discussed. Finally, through the overview of the overall development of the beam string structure, the development prospects and research directions were proposed.

Keywords:beam string structure; cable; key joint; equivalent friction element; engineering application