SMW工法桩监测与Midas数值模拟对比分析
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摘要
SMW工法桩是一种新型的基坑支护形式,凭借安全经济快速等优点得到了广泛的应用,该文通过使用Midas GTS有限元软件对SMW工法桩进行模拟,并将模型顶部水平位移、锚索受力和型钢应力等计算结果与监测数据进行对比分析,结果表明模型的变形规律与实际监测基本相符,锚索和圈梁起到协同作用,约束了土体的位移,型钢下插过程中受到土体阻力使得型钢实际受力大于模型计算值,可为同类工程提供参考。
SMW method pile is a new type of foundation pit support, which has been widely used with the advantages of safety, economy and speed. In this paper, the GTS Midas finite element software was used to simulate SMW method pile, and compare the results of top horizontal displacement, anchor stress and steel stress with the measured data. It can be found that the deformation data obtained from the finite element simulation calculation are consistent with the actual monitoring data. The anchor cables and ring beams play a synergistic role in restraining soil displacement. Soil resistance in steel plug process makes calculated values of steel stress less than the measured value, which could provide reference for similar projects in the future.
SMW method pile is a new type of foundation pit support, which has been widely used with the advantages of safety, economy and speed. In this paper, the GTS Midas finite element software was used to simulate SMW method pile, and compare the results of top horizontal displacement, anchor stress and steel stress with the measured data. It can be found that the deformation data obtained from the finite element simulation calculation are consistent with the actual monitoring data. The anchor cables and ring beams play a synergistic role in restraining soil displacement. Soil resistance in steel plug process makes calculated values of steel stress less than the measured value, which could provide reference for similar projects in the future.
引文
[1] 李东海,王梦恕,丁振明,等.含砂砾土层SMW围护结构变形的三维数值分析与监测[J].岩土工程学报,2012(S1):120-124.
[2] 解廷伟,左殿军,王绪锋,等.临近建筑物SMW工法基坑围护结构受力特性研究[J].重庆交通大学学报(自然科学版),2018(3):44-50.
[3] 郑仲园,何春保,曾祥月,等.广东江河冲积地质SMW工法桩水泥土强度试验研究[J].施工技术,2017(8):41-45.
[4] 赖学全.SMW工法桩在临近重要建筑物基坑支护中的应用[J].广东土木与建筑,2017(6):79-81.
[5] 胡爱龙.改进型SMW工法在九乡河闸站工程基坑中的应用[J].江苏水利,2017(10):63-67.
[6] 方保富.SMW工法在南官河套闸基坑支护中的应用[J].浙江水利水电学院学报,2016(6):46-49.
[7] 徐希强,李宁,陈晓梅.基于MIDAS/GTS的预应力锚索最优锚固段长度优化设计[J].水利与建筑工程学报,2014(1):142-146.
[2] 解廷伟,左殿军,王绪锋,等.临近建筑物SMW工法基坑围护结构受力特性研究[J].重庆交通大学学报(自然科学版),2018(3):44-50.
[3] 郑仲园,何春保,曾祥月,等.广东江河冲积地质SMW工法桩水泥土强度试验研究[J].施工技术,2017(8):41-45.
[4] 赖学全.SMW工法桩在临近重要建筑物基坑支护中的应用[J].广东土木与建筑,2017(6):79-81.
[5] 胡爱龙.改进型SMW工法在九乡河闸站工程基坑中的应用[J].江苏水利,2017(10):63-67.
[6] 方保富.SMW工法在南官河套闸基坑支护中的应用[J].浙江水利水电学院学报,2016(6):46-49.
[7] 徐希强,李宁,陈晓梅.基于MIDAS/GTS的预应力锚索最优锚固段长度优化设计[J].水利与建筑工程学报,2014(1):142-146.