黏性土桩锚基坑冻胀模型试验及其响应分析

doi:10.12068/j.issn.1005-3026.2017.12.024

东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (12): 1785-1789.DOI: 10.12068/j.issn.1005-3026.2017.12.024

黏性土桩锚基坑冻胀模型试验及其响应分析

戴武奎¹，梁力¹，辛全明²

(1. 东北大学资源与土木工程学院，辽宁沈阳110819; 2. 中国建筑东北设计研究院有限公司，辽宁沈阳110819)

收稿日期:2016-06-24 修回日期:2016-06-24 出版日期:2017-12-15 发布日期:2018-01-02
通讯作者: 戴武奎
作者简介:戴武奎(1981-)，男，辽宁沈阳人，东北大学博士研究生；梁力(1955-)，男，辽宁丹东人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51474048)；地质灾害防治与地质环境保护国家重点实验室资助项目(SKLGP2012K009， SKLGP2014K011).

Frost Heaving Model Test and Response Analysis of Pile-Anchor Foundation Pit in Cohesive Soil Area

DAI Wu-kui¹， LIANG Li¹， XIN Quan-ming²

1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China; 2. China Northeast Architectural Design & Research Institute Co.，Ltd.， Shenyang 110819， China.

Received:2016-06-24 Revised:2016-06-24 Online:2017-12-15 Published:2018-01-02
Contact: DAI Wu-kui
About author:-
Supported by:
-

摘要/Abstract

摘要： 黏性土地区基坑的冻胀效应对于工程施工和支护方案设计影响至关重要.结合东北某基坑工程，现场取样，利用室内模型相似试验，得出了黏性土地区桩锚基坑冻胀的力学变形规律，以及冻土压力与位移的函数关系，在此基础上引入支护结构协调变形方程，应用有限差分原理，考虑桩土相互作用，得出冻胀桩锚基坑支护体系的计算结果.基坑冻胀实例表明，桩锚体系考虑冻胀力影响的基坑施加冻胀作用的计算方法，更接近工程监测实际情况，可以在类似工程中推广应用.

关键词: 黏性土, 桩锚, 基坑, 冻胀, 模型试验, 有限差分

Abstract: Frost heaving effect of foundation pit in cohesive soil has a significant impact on engineering construction and support design. Based on selected foundation pit in Northeast China， mechanical deformation law of pile-anchor foundation pit in cohesive soil and the relationship between frozen earth pressure and displacement are derived through a series of laboratory experiments. Deformation-compatibility equations of supporting structure are introduced using the finite difference method considering soil-pile interaction， so that supporting system of the frost heaving pile-anchor foundation pit can be quantitatively designed. The case of the frost heaving effect on foundation pit offers a new method for anchor-pile system under the consideration of frost heaving action imposed by foundation pit with the influence of frost heaving pressure， which is more accurate to the actual condition of engineering monitoring， and can be applied to similar projects.

Key words: cohesive soil, pile-anchor, foundation pit, frost heaving, model test, finite difference method

中图分类号:

TU476.4

戴武奎，梁力，辛全明. 黏性土桩锚基坑冻胀模型试验及其响应分析[J]. 东北大学学报:自然科学版, 2017, 38(12): 1785-1789.

DAI Wu-kui， LIANG Li， XIN Quan-ming. Frost Heaving Model Test and Response Analysis of Pile-Anchor Foundation Pit in Cohesive Soil Area[J]. Journal of Northeastern University Natural Science, 2017, 38(12): 1785-1789.

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黏性土桩锚基坑冻胀模型试验及其响应分析

Frost Heaving Model Test and Response Analysis of Pile-Anchor Foundation Pit in Cohesive Soil Area

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