重复式钢板支护在城市电缆基坑设计中的应用  

Application of Repeated Steel Plate Support in the Design of Cable Foundation Pit

作　　者：张军 娄虹玉 ZHANG Jun;LOU Hongyu(PowerChina Construction Group Guizhou Electric Power Design&Research Institute Co.,Ltd.,Guiyang 550000,China;Guizhou Water Conservancy and Hydropower Vocational and Technical College,Guiyang 551416,China)

机构地区：[1]中国电建集团贵州电力设计研究院有限公司,贵州贵阳550000 [2]贵州水利水电职业技术学院,贵州贵阳551416

出　　处：《电力勘测设计》2023年第5期19-23,56,共6页Electric Power Survey & Design

摘　　要：随着城市地下空间的延伸发展,地下空间利用率逐年提升。为解决城市已建市政道路之下开挖困难大、影响因素多、施工效率低等问题,具体体现在各类市政管网错综复杂,开挖作业面狭长有限,开挖层受雨水冲刷、道路车载、土体松弛变形影响大,施工作业时间严格控制等方面,本文提出一种适用于城市电缆基坑设计的重复式钢板支护措施。通过对支护方式的详细分解、支护方案的受力计算、技术要点的精准把控、已建工程的实践应用,说明重复式钢板支护具有成本低、周期短、空间利用率高、水文地质适应性强、安全稳固等特点,进一步论证重复式钢板支护的安全性、适用性和经济性。With the extension and development of urban underground space,the utilization rate of underground space is increasing year by year.In order to solve the problems of difficult excavation,many influencing factors and low construction efficiency under the built municipal roads in the city,which are embodied in the complexity of various municipal pipe networks and the limited length of excavation operation surface,the excavation layer is greatly affected by rain erosion,road vehicle load,soil relaxation and deformation,and the construction time is strictly controlled.Through the detailed decomposition of the support mode,the force calculation of the support scheme,the precise control of the technical points,and the practical application of the built projects,it shows that the repeated steel plate support has the characteristics of low cost,short period,high space utilization rate,strong hydrogeological adaptability,safety and stability,etc.,the safety,applicability and economy of repeated steel plate support are further demonstrated.

关 键 词：电缆廊道 浅基坑 重复式钢板支护 

分 类 号：TM72[电气工程—电力系统及自动化]