[1]孙林娜,徐福宾.水泥土墙复合土钉墙的协同作用机理数值模拟[J].华侨大学学报(自然科学版),2020,41(3):314-322.[doi:10.11830/ISSN.1000-5013.201907047]
　SUN Linna,XU Fubin.Numerical Simulation on Cooperative Action of Composite SoilNailing Wall With Cement Soil Wall[J].Journal of Huaqiao University(Natural Science),2020,41(3):314-322.[doi:10.11830/ISSN.1000-5013.201907047]
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水泥土墙复合土钉墙的协同作用机理数值模拟()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第41卷
期数:
2020年第3期
页码:
314-322
栏目:
出版日期:
2020-05-20

文章信息/Info

Title:
Numerical Simulation on Cooperative Action of Composite SoilNailing Wall With Cement Soil Wall
文章编号:
1000-5013(2020)03-0314-09
作者:
孙林娜;  徐福宾
青岛理工大学 土木工程学院, 山东 青岛 266033
Author(s):
SUN Linna;  XU Fubin
Department of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China
关键词:
水泥土墙;  复合土钉墙;  三维数值模拟;  墙钉比;  协同作用
Keywords:
cement soil wall;  composite soil nailing wall;  3D numerical simulation;  wall-nail ratio;  cooperative action
分类号:
TU472
DOI:
10.11830/ISSN.1000-5013.201907047
文献标志码:
A
摘要:
为进一步明确复合式支护结构间的协同作用机理,以水泥土墙复合土钉墙为研究对象,运用FLAC3D有限差分软件建立三维模型.在分析工程实例基本作用规律的基础上,以水泥土墙水平位移为衡量指标,利用墙钉比进行数值模拟分析.结果表明:改变墙宽,当墙钉比为7.00%~12.00%时,最大水平位移明显减少;在墙钉比不变的情况下,水泥土墙在基坑边缘时,约束水平位移最为明显,后移影响土钉轴力的发挥;改变土钉倾角,当墙钉比为8.90%~9.20%时,位移明显减少,最大水平位移最小.因此,当墙钉比为8.00%~9.50%时,支护结构受力合理,协同作用效果最好.
Abstract:
In order to study the cooperative action between composite retaining structures, the composite soil nailing wall with cement soil wall was analyzed. Based on the analysis of the basic action of the engineering, the 3D model was established by the FLAC3D finite difference software. Taking the horizontal displacement of cement soil wall as index, the wall-nail ratio was adopted to numerically study cooperative action. The results show that: for the change of wall width and 7.00%-12.00% of wall nail ratio, the maximum horizontal displacement is obviously reduced; for the constant wall nail ratio, the horizontal displacement of the cement soil wall at the edge of the foundation pit is the most obviously reduced, the backward movement affects the exertion of the axial force of the soil nail; for the change of soil nail inclination angle and 8.90%-9.20% of the wall nail ratio, the displacement is reduced significantly, and the maximum horizontal displacement is the smallest. Therefore, 8.00%-9.50% of the ratio of wall nails is recommended, with reasonable stress state of support structure and best cooperative action.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2019-07-20
通信作者: 孙林娜(1979-),女,副教授,博士,主要从事基础工程的研究.E-mail:61156101@qq.com.
基金项目: 山东省自然科学基金资助项目(ZR2017PD011); 三峡库区地质灾害教育部重点实验室(三峡大学)开放基金资助项目(2017KDZ03)
更新日期/Last Update: 2020-05-20