北京中关村科技园区丰台园东区基坑工程支护设计与施工

Design and construction of foundation pit support in Fengtaiyuan east area of Zhongguancun Science and Technology Park, Beijing

摘要:

目前多种支护方式组合在基坑支护工程中的使用越来越广泛。本文以北京丰台区中关村科技园区丰台园东区三期1516-36号地块项目基坑工程为例，根据现场实际需要选择了整体采用桩锚支护，在局部采用了土钉墙+大坡率放坡联合支护、大坡率放坡锚喷简易支护和悬臂桩支护等多种支护组合的型式。相关测绘单位第三方基坑监测显示均处于安全变形范围内，满足设计要求。

关键词:基坑支护;桩锚支护;土钉墙;大坡率放坡;悬臂桩

Abstract:

The combination of multiple support methods is more and more widely used in current foundation pit support. For the foundation pit project of No.1516-36 plot in the third phase of Fengtaiyuan east area of Zhongguancun Science and Technology Park, Fengtai District, Beijing, the pile anchor is selected for overall support in combination with soil nailing wall plus large rate sloping, large sloping anchor spraying plus cantilever piles for local support according to the actual requirements. The third-party monitoring results of the foundation pit by the relevant surveying and mapping units are all within the safe deformation range, meeting the design requirements.

Key words:foundation pit support; pile-anchor support; soil nail wall; large slope rate sloping; cantilever pile