四川长宁县6.0级地震通信系统结构震害调查与分析

Seismic damage survey and analysis of communication system in Changning Ms6.0 earthquake

通信系统是生命线工程系统的重要组成部分,对震后通信系统各组成部分震害调查具有重要的现实意义。2019年6月17日四川省宜宾市长宁县发生6.0级地震,震源深度16km。首先介绍了该次地震震区及震害基本情况,并分为楼面基站和落地基站两类详细调查了Ⅷ度区长宁县双河镇和珙县珙泉镇震后通信系统使用功能及震害情况,得到了该次地震中通信系统各主要组成部分的典型破坏特征,并对其破坏的主要影响因素进行了分析。由调查结果可知:通信铁塔抗震性能良好;地面通信机房的破坏程度与结构形式紧密相关,应优先采用框架结构和彩钢机房,或者在砌体结构中增加圈梁和构造柱,增加机房整体稳定性;通信设备是通信系统抗震薄弱环节,应增强其抗震性能。

Communication system is an important part of lifeline engineering system.It has practical significance for seismic damage survey of every component of post-earthquake communication system.On June 17,2019,a Ms 6.0 earthquake occurred in Changning county,Yibin city,Sichuan province,with a focal depth of 16 km.This paper firstly introduces the basic information of the earthquake area and seismic damage,then investigates the use function and seismic damage of communication system,which are divided into floor base station and ground-falling station,in Shuanghe town of Changning county and Gongquan town of gong county in zones with intensityⅧafter the earthquake.The typical failure characteristics of main components of the communication system are obtained,and the main influencing factors of the damage are analyzed.The results show that the seismic performance of the communication tower is good,and the damage degree of the ground communication room is closely related to the structural types.It is preferable to adopt frame structure,color steel machine room,or to add ring beams and structural columns in masonry structure to increase the overall stability of machine room.In addition,communication device is the weak link of seismic resistance of communication system,and its seismic performance should be enhanced.