（1 山东金城建设有限公司， 淄博 255000； 2 中国矿业大学， 徐州 221116）

［摘要］随着城市建设中地下空间开发利用愈来愈多，深基坑工程变得越来越复杂，对其支护形式的研究也面临前所未有的挑战。以石家庄市某深基坑工程为例，采用非线性有限元方法对桩锚-土钉墙分段组合和桩锚-土钉墙分级组合两种不同组合支护形式下的坡顶水平位移、竖向位移、深层土体位移进行分析。对比发现，桩锚-土钉墙分级支护较桩锚土钉墙分段支护在坡顶水平位移、竖向位移、深层土体位移方面控制效果更佳。

［关键词］深基坑； 桩锚支护； 土钉墙； 优化组合

中图分类号： TU196 文献标识码： A文章编号：  1002-848X(2016)S2-0550-05

Comparisons of supporting forms of deep foundation with different supporting

 combinations based on the numerical simulation

Jia Yi1， Ma Chong1， Zhang Yingying2， Zhang Dongjian1

(1 Shandong Golden City Construction Co., Ltd., Zibo 255000, China;

2 China University of Mining and Technology, Xuzhou 221116, China)

Abstract: With the development and application of urban underground space, the construction of deep foundation engineering is becoming more and more complicated, while the study on the supporting form is also facing unprecedented challenges. A deep foundation engineering in Shijiazhuang is taken as an example. The finite element method is used to compare the pile anchor and soil nailing wall sectional combination and hierarchical combinationl with two different combinations, in which the horizontal displacement, vertical displacement and deep displacement of soil of slope top were analyzed. Comparing the hierarchical combination of pile anchor and soil nailing wall with sectional combination′s, in which the top horizontal displacement, vertical displacement and deep displacement of soil, and the latter′s control effect is better. The results show that the top horizontal displacement, vertical displacement and deep displacement of soil the sectional combinationl effect is better, in which the hierarchical combination of pile anchor and soil nailing wall and sectional combination′s comparison.

Keywords: deep foundation; pile anchor supporting; soil nailing wall; optimum combination

作者简介： 贾毅，本科，工程师，一级建造师，Email：zibojiayi@126.com。