望红线电力电缆隧道安全性评估  

Safety Evaluation of Power Cable Tunnel on Wanghong Line

作　　者：张廼龙 刘洋 陈杰 高嵩 荆宇航[2] ZHANG Nai-long;LIU Yang;CHEN Jie;GAO Song;JING Yu-hang(State Grid Jiangsu Electric Power Co., Ltd. Research Institute, Nanjing 211103, China;Department of Astronautical Science and Mechanics, Harbin Institute of Technology, Harbin 150001, China)

机构地区：[1]国网江苏省电力有限公司电力科学研究院,江苏南京211103 [2]哈尔滨工业大学航天科学与力学系,黑龙江哈尔滨150001

出　　处：《节能技术》2020年第6期545-549,共5页Energy Conservation Technology

摘　　要：文章对江苏无锡太湖新城220 kV望红线56#~63#入地工程进行了评估,采用ABAQUS模拟分析了电力电缆隧道的应力云图,位移云图及衬砌安全系数,结合现场检测数据,综合评估了电缆隧道的安全性。结果表明:边墙作为应力集中的部位,是衬砌结构受力的薄弱部位;随水头高度的增加,衬砌结构的最大应力值和最大位移值呈线性增加;望红线混凝土构件的钢筋锈蚀、保护层胀裂,主要是因为混凝土中氯离子含量偏高造成的,目前运营状态下望红线电缆隧道是安全的。This paper evaluates the 56#~63#underground project of 220 kV Wanghong line in Taihu new town,Wuxi,Jiangsu Province.ABAQUS is used to simulate and analyze the stress nephogram,displacement nephogram and lining safety factor of the power cable tunnel.Combined with the field test data,the safety of the cable tunnel is comprehensively evaluated.The results show that,as the stress concentration,the side wall is the weak part of the lining structure.The maximum stress value and the maximum displacement value of the lining structure increase linearly with the increase of the head height.The corrosion of steel bars and the expansion of protective layer of concrete components of Wanghong line are mainly caused by the high content of chloride ion in the concrete.At present,the cable tunnel of Wanghong line is safe in operation.

关 键 词：电力电缆隧道 安全系数 数值分析 安全性评估 衬砌强度 

分 类 号：U451[建筑科学—桥梁与隧道工程] U459[交通运输工程—道路与铁道工程]