土钉墙和桩锚联合支护数值模拟及实测对比研究

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基金项目:

中建总公司课题《城市中心区特大超深基坑工程对周边环境的影响评估及控制关键技术》(CSCEC-2011-Z-33)

Simulation and Field Measurements for Combination Support of Soil Nailing and Pile-anchor

1. China Construction First Group Construction&Development Co., Ltd, Beijing 100102, China;
2. School of Mechanics and Civil Engineering, China University of Mining&Technology, Beijing 100083, China

摘要: 基坑上部土钉墙、下部桩锚的联合支护是北京地区常见的一种深基坑支护形式,安全可靠,造价低廉。以往工程设计中,采用分别建模,独立进行,一般不考虑上部土钉墙与下部桩锚这两种不同支护型式间的相互影响,容易造成现场安全隐患。采用数值模拟手段,结合国贸三期A阶段深基坑现场监测数据,得出了上部土钉墙与下部桩锚的变形相关规律并给出了工程实践中简便的控制方法。
- 数值模拟 /
- 桩锚支护 /
- 现场实测 /
- 深基坑工程
Abstract: The combination support of soil nailing and pile-anchor is a common type of deep foundation pit supporting form in Beijing area. It is safe and low cost. In the design of previous engineerings, People do not consider the soil nailing and pile-anchor of the two different support type interactions, then it cause easy the scene safe hidden trouble.Based on the numerical simulation methods, combining CWTC IIIA deep foundation excavation in-situ monitoring data, we got a related law of the combination support and given in engineering practice of simple control method.
- simulation /
- pile-anchor supporting /
- field measurements /
- deep pit