季节性冻土区深基坑桩锚支护结构冻胀变形控制研究

张智浩; 马凛; 韩晓猛; 何敬宇

季节性冻土区深基坑桩锚支护结构冻胀变形控制研究 English Version

张智浩^1,2,
马凛^1,2,
韩晓猛^1,2,
何敬宇¹

(1. 中国京冶工程技术有限公司，北京 100088；2. 中冶建筑研究总院有限公司，北京 100088)

详细信息

作者简介:
张智浩(1972– )，男，高级工程师，主要从事岩土工程施工、设计与科研工作。

中图分类号: TU445
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出版历程
- 收稿日期: 2012-11-12
- 发布日期: 2012-11-12

Frost heaving deformation control of pile-anchor retaining structure of deep foundation pits in seasonal frozen soil regions

(1. China Jingye Engineering Corporation Limited, Beijing 100088, China; 2. Central Research Institute of Building and Construction. MCC, Beijing 100088, China)

摘要

摘要: 季节性冻土区深基坑支护冻胀影响问题常常由于温差不大、冻融时间较短容易被忽略，但某些特殊情况下冻胀影响产生的基坑坍塌事故却屡见不鲜。对基坑边坡冻胀机理及计算方法进行了总结描述，结合北京某深基坑支护工程，通过对2011～2012年冬季冻胀影响过程的监测与相应处理措施实施效果分析，总结了桩锚支护结构体系的冻胀影响因素，提出了相应注意事项、预防及处理措施。
- 桩锚支护结构 /
- 深基坑 /
- 冻胀 /
- 变形控制
Abstract: The frost heaving effects of pile-anchor retaining structure of deep foundation pits in seasonal frozen soil regions are easily neglected owing to the small temperature difference and the short frozen time. However, the collapse accidents of foundation pit caused by the influence of the frost heaving are not uncommon in some special circumstances. Firstly, the frost heaving mechanism of the foundation pit slope is described, and its calculation methods are summarized. Then based on the support of a deep foundation pit in Beijing, through monitoring the process of frost heaving in the winter of 2011, the implementation effects of the corresponding measures are analyzed. The influence factors of frost heaving on pile-anchor supporting system are summarized. The points for attention and the relevant prevention and treatment measures are proposed.
- pile-anchor retaining structure /
- deep foundation pit /
- frost heave /
- deformation control

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参考文献(6)

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