土工基础

›› 2018, Vol. 32 ›› Issue (1): 17-19.

• 工程实录 • 上一篇    下一篇

相邻深浅基坑支护设计优化及施工

彭 莹   

  1. （成都兴蜀勘察基础工程公司,成都 610072)
  • 收稿日期:2017-04-02 修回日期:2017-04-13 出版日期:2018-02-20 发布日期:2018-03-01
  • 作者简介:彭 莹（1989-），女，工程师，主要研究方向为基坑支护工程、工程勘察。

Supporting Design of Deep Excavation Near an Existing Basement

PENG Ying   

  1. (Chengdu Xingshu Reconnaissance Infrastructure Engineering Co., Chengdu 610072)
  • Received:2017-04-02 Revised:2017-04-13 Online:2018-02-20 Published:2018-03-01

摘要： 介绍与周边地下室相距较近的某20.6 m 深的基坑支护。由于预留施工肥槽后两基坑护坡桩间净距离只有13.20 m，没有锚索设计条件，故原方案采用双排桩进行支护，但仍然不能保证相邻基坑的安全。通过优化支护体系, 将原有双排桩支护的基坑设计方案优化卸土后进行放坡，不仅保障安全，也节省了工程造价。

关键词: 相邻深基坑, 先深后浅, 优化施工

Abstract: This paper presents a case history of the supporting design of a deep excavation with a distance of 20.6 meters to the existing basement. The net spacing between the piles of two adjacent excavations was only 13.2 meters and the ground anchor option was not feasible. The improved method value engineered the original design of double pile option with the combination of soil unloading and sloping. The improved method was proved to be a safe and costeffective method.

Key words: adjacent deep excavations, shallower excavation followed by eeeper excavation, optimized construction