混凝土内支撑与栈桥结合体系在深基坑工程中的应用  

Application of Concrete Internal Support and Trestle Combination System in Deep Foundation Pit Engineering

作　　者：吴文杰 房江锋 杜琦 张思祺 李静 WU Wenjie;FANG Jiangfeng;DU Qi;ZHANG Siqi;LI Jing(Shenzhen Hongyeji Geotechnical Co.,Ltd.,Shenzhen Guangdong 518000,China)

机构地区：[1]深圳宏业基岩土科技股份有限公司,广东深圳518000

出　　处：《工程质量》2024年第S02期23-26,共4页Construction Quality

摘　　要：随着对城市地下空间开发利用需求的增加,基坑的深度逐步加深,由此也加剧了深基坑土方开挖及外运的难度。本文基于工程实例,从深基坑支护结构体系出发,充分利用已有的内支撑结构,建立了可高效运转的混凝土栈桥体系,有效解决了制约城市基坑工程中的土方开挖及外运难题。内支撑与栈桥结合体系,相较传统的土质坡道,在增加费用可控的前提下,极大提升土方开挖及外运的效率,可有效节约工期和工程投资,取得良好的经济效益。With the increasing demand for the development and utilization of urban underground space,the depth of foundation pit is gradually deepened,which also aggravates the difficulty of earthwork excavation and external transportation of deep foundation pit.Based on the engineering example,starting from the deep foundation pit support structure system,this paper makes full use of the existing internal support structure,and establishes a concrete trestle system that can operate efficiently,which effectively solves the problem of earthwork excavation and external transportation in urban foundation pit engineering.Compared with the traditional soil ramp,the combination system of internal support and trestle greatly improves the efficiency of earthwork excavation and external transportation under the premise of controllable cost increase,which can effectively save the construction period and project investment and achieve good economic benefits.

关 键 词：深基坑 内支撑 土方开挖 施工栈桥 

分 类 号：TU751[建筑科学—建筑技术科学]