土工基础

›› 2018, Vol. 32 ›› Issue (3): 248-250.

• 工程实录 • 上一篇    下一篇

钢筋混凝土栈桥在软土深大基坑的设计和实践

刘晨1，丘建金1，谭启润2，贾海云2，陈玮3,郑海涛3,沈冬儿4   

  1. （1.深圳市勘察测绘院有限公司，广东深圳  518028； 2.深圳市地铁集团有限公司，广东深圳 518026；3.中国建筑一局(集团)华南区域公司，广东深圳 518040；4.广州大学土木工程学院，广州 510006）
  • 收稿日期:2018-03-20 修回日期:2018-04-03 出版日期:2018-06-22 发布日期:2018-06-26
  • 作者简介:刘 晨（1985-），男，硕士研究生，工程师，注册土木工程师（岩土），研究方向为岩土工程。〖BP(〗丘建金（1964-），男，博士研究生，全国工程勘察设计大师，研究方向为岩土工程的勘察、设计和研究。（13802271766）

Design and Application of Reinforced Trestle Bridge in Deep Excavations in Soft Soils

LIU Chen1, QIU Jianjin1, TAN Qirun2, JIA Haiyun2, CHEN Wei3, ZHENG Haitao3, SHEN Donger4   

  1. (1.Shenzhen Geotechnical Investigation & Surveying Institute Company Limited, Shenzhen 518028;
    2.Shenzhen Metro Group Company Limited, Shenzhen 518026;
    3.China Construction First Bureau (Group) Southern China Regional Company, Shenzhen 518040;
    4.School of Civil Engineering, Guangzhou University, Guangzhou 510006)
  • Received:2018-03-20 Revised:2018-04-03 Online:2018-06-22 Published:2018-06-26

摘要： 随着我国地下空间利用水平的不断提高，采用钢筋混凝土支撑型式的深大基坑越来越普遍，从而使得基坑土方开挖和运输的难度也越来越大。因此，设置专门的出土栈桥已成为深大基坑支护设计过程中不可或缺的重要环节。针对红树湾物业开发项目的软土深大基坑，根据周边环境复杂及施工场地狭窄等因素，通过设置钢筋混凝土栈桥式来提高土方运出的效率，并根据钢筋混凝土框架结构盖板体系的计算方法进行受力分析，取得了较好的效果，可为类似基坑工程提供参考。

关键词: 深大基坑, 钢筋混凝土栈桥, 土方外运, 结构分析

Abstract: Due to the increasing improvement of the underground space utilization, the deep excavation using the reinforced concrete support is more and more popular. As a result, the excavation and transportation waste soils are also increasingly difficult. Therefore, the trestle bridges that for the waste soil transportation have become an integral part deep excavation support design process. The Hongshuwan real estate large area and depth deep excavation case history is presented in this paper. This site had constrained excavation area and sensitive adjacent surrounding environment. A reinforced concrete temporary trestle bridge was designed to improve the waste soil transportation efficiency. The trestle bridge was analyzed by using the same approach for the design of reinforced concrete slab in the frame structure.

Key words: Deep Excavation for Large Area and Depth, Reinforced Concrete Trestle Bridge, Waste Soil Transportation, Structural Analysis