（同济大学建筑工程系， 上海 200092）

［摘要］横膈是保证多边形格构式塔整体空间稳定必不可少的构件，当前有关技术文件对横膈面设置间隔和横膈设置形式要求不一。利用有限元软件SAP2000建立了不同横膈面设置间隔、不同横膈形式的角钢通信塔架整体模型，进行了各塔型模态在风荷载作用下主要受力构件的应力比和塔架用钢量的对比分析。研究表明：在无变坡的塔段中可适当增大横膈面设置间隔，且可用预应力柔性交叉横膈替代刚性横膈布置在横膈面。

［关键词］格构式塔； 横膈； 模态分析； 预应力柔性杆

中图分类号：TU347文献标识码：A文章编号：1002-848X(2016)14-0070-04

Effect of horizontal diaphragm on wind-resistant capacity of lattice angle-steel communication towers

Shen Zhirong，  Mei Yu

（Department of Structural Engineering， Tongji University， Shanghai 200092， China）

Abstract:Horizontal diaphragm is an indispensable component to ensure the overall spatial stability of polygonal lattice tower. No agreement on the interval or form of diaphragms has been reached in technical documents currently. Integral models of angle-steel communication towers with diaphragms in different intervals and forms were built by SAP2000. The comparison between different types of towers on models, stress ratios of main structural members and economy shows that it is reasonable and feasible to increase the interval between diaphragms and to replace the rigid diaphragms with cross prestressed flexible rods.

Keywords:lattice tower； diaphragm； modal analysis； prestressed flexible rod

作者简介：沈之容，博士，副教授，Email:shenzhirong@tongji.edu.cn。