[1]童艳光,蔡增姣,刘文召,等.地震作用下加筋土挡墙整体稳定性分析[J].华南地震,2022,(02):124-130.[doi:10.13512/j.hndz.2022.02.17]
 TONG Yanguang,CAI Zengjiao,LIU Wenzhao,et al.Global Stability Analysis of Reinforced Soil Retaining Wall Under Earthquake[J].,2022,(02):124-130.[doi:10.13512/j.hndz.2022.02.17]
点击复制

地震作用下加筋土挡墙整体稳定性分析()
分享到:

华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2022年02期
页码:
124-130
栏目:
土木工程防震减灾
出版日期:
2022-06-30

文章信息/Info

Title:
Global Stability Analysis of Reinforced Soil Retaining Wall Under Earthquake
文章编号:
1001-8662(2022)02-0124-07
作者:
童艳光1蔡增姣1刘文召2张亿凯2
1.广州环保投资集团有限公司,广州 510055;2.中国建筑一局(集团)有限公司,北京 100161
Author(s):
TONG Yanguang1CAI Zengjiao1LIU Wenzhao2ZHANG Yikai2
1.Guangzhou Environmental Protection Investment Group Co.,Ltd.,Guangzhou 510055,China;2.China Construction First Group Co., Ltd., Beijing 100161, China
关键词:
软土地基加筋土挡墙地震稳定性强度折减法拟静力法
Keywords:
Soft soil foundationReinforced soil retaining wall Seismic stabilityStrength reduction Pseudo-static method
分类号:
TU476.4
DOI:
10.13512/j.hndz.2022.02.17
文献标志码:
A
摘要:
为研究软土地基上加筋土挡墙在地震作用下的稳定性,通过有限差分软件建立了高度为10m的加筋土挡墙数值模型,并对其施加坡顶超载和地震荷载,分析了回填土黏聚力(0kPa、5kPa、10kPa、15kPa、20kPa)、内摩擦角(25°、30°、35°、40°)、底部筋材长度(6m、8m、10m、11m、12m、14m)以及筋材位置对加筋土挡墙地震稳定性的影响。结果表明:加筋土挡墙的地震整体稳定性系数随墙后回填土的内摩擦角及黏聚力的增大近似线性增长;地震整体稳定性系数随着筋材布置间距的增大而减小,筋材应布置在边坡位移最大点位附近;地震整体稳定性系数随底部筋材长度的增加先升高后趋于稳定。
Abstract:
In order to study the stability of reinforced soil retaining wall on soft soil foundation under earthquake, a numerical model of reinforced soil retaining wall with a height of 10 m was established by finite difference software, and the slope top overload and seismic load were applied to it. The influence of backfill cohesive force (0 kPa,5 kPa,10 kPa,15 kPa,20 kPa),internal friction angle(25°,30°,35°,40°),length of bottom reinforcement(6 m, 8 m, 10 m, 11 m, 12 m, 14 m)and position of reinforcement on seismic stability of reinforced soil retaining wall was analyzed. The results show that the overall seismic stability coefficient of reinforced soil retaining wall increases approximately linearly with the increase of internal friction angle and cohesion of backfill soil behind the wall; the overall seismic stability coefficient decreases with the increase of reinforcement spacing,and the reinforcement should be placed near the maximum displacement point of the slope;with the increase of the length of the bottom reinforcement,the overall seismic stability coefficient firstly increases and then tends to be stable.

参考文献/References:

[1]于昕左,肖世国.水平柔性拉筋式重力墙地震土压力拟静力分析方法[J].土木工程学报,2019,52(S2):180-185.
[2]肖世国,张建经,马耀先.汶川地震区路堑重力挡墙震害调查[J].地下空间与工程学报,2011,7(1):174-178.
[3] XU P,HATAMI K. Sliding stability and lateral displacement analysis of reinforced soil retaining walls[J]. Geotextiles and Geomembranes,2019,47(4):483-492.
[4] SHUKL A S K. Seismic active earth pressure from the sloping c-φ soil backfills[J]. Indian Geotechnical Journal,2013,43 (3):274-279.
[5]聂秀鹏,逄焕平,孙志彬,等.三维加筋边坡地震稳定性上限分析[J].岩土力学,2019,40 (09):3483-3492.
[6] ALHAJJ CHEHADE H, DIAS D, SADEK, M, et al. Upper bound seismic limit analysis of geosynthetic-reinforced unsaturated soil walls[J]. Geotextiles and Geomembranes,2020,48(4):419-430.
[7] ALHAJJ CHEHADE H,DIAS D,SADEK,M,et al. Seismic analysis of geosynthetic-reinforced retaining wall in cohesive soils[J]. Geotextiles and Geomembranes,2019,47(3):315-326.
[8]卢谅,何林耀,王宗建,等.地震作用下加筋土挡墙水平位移分区计算理论[J].岩土力学,2021,42(02):401-410.
[9]汪益敏,张晖,黎寰,等.考虑地震时程的加筋土挡土墙动力分析[J].振动与冲击,2013,32(24):187-197.
[10]肖世国,刘航,于昕左.水平柔性拉筋式重力墙-坡体地震整体稳定性分析方法[J].岩土力学,2020(06):1-9.
[11]马学宁,吴培元,王旭.加筋土边坡稳定性分析水平条分简化计算方法[J].铁道学报,2017(9):160-165.
[12]贾亮,郭健,姚凯.基于水平条分法的加筋土边坡地震稳定性分析[J].应用基础与工程科学学报,2018,26(01):168-176.
[13]孙平,陈玺,王玉杰.边坡稳定极限分析斜条分上限法的全局优化方法[J].水利学报,2018,49(06):741-748+756.
[14]陈昌富,李瑞芳.基于Spencer法边坡地震永久位移计算斜条分法[J].公路工程,2017,42(03):1-5+25.
[15]中华人民共和国铁道部. TB 10025-2006 :铁路路基支挡结构设计规范[S].北京:中国铁道出版社,2009.
[16]李承亮,冯春,刘晓宇.拟静力方法适用范围及地震力计算[J].济南大学学报(自然科学版),2011,25(04):431-436.

相似文献/References:

[1]余克兴.软土地基低层房屋砌体结构地震易损性分析[J].华南地震,2020,40(04):152.[doi:10.13512/j.hndz.2020.04.021]
 YU Kexing.Seismic Vulnerability Analysis of Masonry Structure of Low-Rise Buildings on Soft Soil Foundation[J].,2020,40(02):152.[doi:10.13512/j.hndz.2020.04.021]

备注/Memo

备注/Memo:
收稿日期:2022-01-10
基金项目:国家自然科学基金项目(51678352)
作者简介:童艳光(1968-),男,高级工程师,主要从事岩土勘察设计、监测检测及地质灾害评估治理、岩土工程治理等研究工作。E-mail: tygzn@163.com
更新日期/Last Update: 2022-06-30