明开电力隧道深基坑复合土钉墙支护施工技术研究  

作　　者：李静强 

机构地区：[1]中铁二十二局集团第二工程有限公司,北京102600

出　　处：《科技创新与应用》2023年第34期180-183,共4页Technology Innovation and Application

摘　　要：以北京大兴榆垡学校市政项目电力隧道深基坑工程为背景,通过采取土钉墙加预应力锚杆支护方式形成复合土钉墙,该工艺适用于一般岩土介质,也适用于不良地质条件。利用复合土钉墙支护的优势,在可塑、硬塑或坚硬的黏土,胶结或弱胶结(包括毛细水粘结)的粉土、砂土和角砾、风化岩层、松散砂土、软塑和流塑黏土等各类岩土工程的加固与支护应用中,做到技术先进、使用正确、经济合理、安全可靠,确保工程安全质量。Taking the deep foundation pit project of power tunnel of Beijing Daxing Yufa School Municipal Project as the background,the composite soil nail wall is formed by using soil nail wall and prestressed bolt support,which is suitable for general rock and soil media and also suitable for poor geological conditions.This paper takes advantage of the advantages of composite soil nail wall support,in the reinforcement and support application of various geotechnical engineering such as plastic,hard plastic or hard clay,cemented or weakly cemented(including capillary water bonding)silt,sand and breccia,weathered rock layer,loose sand,soft plastic and flow plastic clay,etc.,so as to achieve advanced technology,correct use,economic reasonable,safe and reliable,and ensure the quality of the project.

关 键 词：深基坑 土钉墙支护 预应力 施工技术 混凝土 

分 类 号：TU753[建筑科学—建筑技术科学]