[1]李明瑛,曾朋.基于MIDAS深基坑桩锚支护数值模拟分析[J].水土保持研究,2012,19(01):250-253.
　LI Ming-ying,ZENG Peng.Numerical Simulation Analysis of Pile-anchor Retaining in Deep Foundation Based on MIDAS[J].Research of Soil and Water Conservation,2012,19(01):250-253.
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基于MIDAS深基坑桩锚支护数值模拟分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 19 期数: 2012年01期 页码: 250-253 栏目: 出版日期: 2012-02-20
Title:
Numerical Simulation Analysis of Pile-anchor Retaining in Deep Foundation Based on MIDAS
作者:
李明瑛1, 曾朋2
1. 广东石油化工学院 建筑工程学院, 广东 茂名 525000;
2. 华南理工大学 土木与交通学院, 广州 510640
Author(s):
LI Ming-ying1, ZENG Peng2
1. College of Architectural Engineering, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China;
2. College of Civil and Traffic, South China University of Technology, Guangzhou 510640, China
关键词:
深基坑; 桩锚支护; 数值模拟; MIDAS; 有限元
Keywords:
deep foundation; pile-anchor retaining; numerical simulation; Midas; finite element
分类号:
TU753.6
摘要:
根据某勘察设计院提供的地质资料和监测数据，通过有限元软件Midas对某市某地块项目建立三维深基坑模型，进行数值模拟分析。介绍了有关工程情况及模型相关设置，提取支护结构变形值与实际监测变形值进行对比，结果表明此模型具有可行性，得出基坑开挖及地下室施工过程中挡土桩的最大水平位移在顶端，基坑边缘的中点，特别是长边的中点附近；基坑土体竖向最大沉降发生在基坑边缘背后一定距离处以及锚杆锚固力在自由段均匀分布，在锚固段逐渐减小等变化规律，为变形控制设计与工程监测提供依据。
Abstract:
Based on foundation trench of a survey and design institute, the numerical simulation analysis on model of triaxiality deep foundation established by using large finite element software (i.e.MIDAS) was carried out. The engineering condition and model correlation are introduced. The deformation value of city structure and the observe value are compared. The viability of model is verified. Moreover, it is described that on the basement excavation and construction process,the maximum horizontal displacement of the pile at the top, the midpoint of the edge of the pit, especially near the midpoint of the long side; the vertical edge of the maximum settlement of excavation of soil occurred in a certain distance behind the pit and the anchoring strength is distributed evenly in the free section and decreased gradually variation, and it provides some references for deformation control design and engineering monitoring.

参考文献/References:

[1] 陈忠汉.深基坑工程[M].2版.北京:机械工业出版社, 2002.
[2] 姜晨光, 林新贤, 黄家兴, 等.深基坑桩锚支护结构变形监测与初步分析[J].岩土工程界, 2002, 5 (8):55-56.
[3] 张程林, 彭炎华.深基坑桩锚支护数值模拟及参数分析[J].施工技术, 2008, 37 (s1):321-324.
[4] 张勇, 赖惠成.基于Midas技术的多层分布式应用程序开发[J].新疆大学学报, 2003, 20 (2):139-141.
[5] 吴彰森, 胡耀平.基坑支护工程监测技术研究[J].工程技术, 2009, 10 (9):43-46.
[6] 熊建华.采动巷道岩体变形与锚杆锚固力变化规律[J].工程技术, 2009, 28 (6):330-332.
[7] 刘亚飞, 武崇福.深基坑单支点桩锚支护现场试验与数值模拟研究[D].北京:燕山大学, 2010.

备注/Memo

收稿日期:2011-4-12;改回日期:2011-9-15。
基金项目:广东省茂名市科学计划项目“茂名区域地质环境与深基坑工程开挖支护技术研究”（203627）
作者简介:李明瑛（1966- ），女，本科，高级工程师，研究方向：岩土工程。E-mail：gdmmjlysh@163.com

更新日期/Last Update: 1900-01-01