考虑界面软化特性的垃圾填埋场斜坡上土工膜内力分析

›› 2008, Vol. 29 ›› Issue (8): 2063-2069.

考虑界面软化特性的垃圾填埋场斜坡上土工膜内力分析

林伟岸，朱斌，陈云敏，詹良通

浙江大学软弱土与环境土工教育部重点实验室，杭州 310027

收稿日期:2006-12-20 出版日期:2008-08-11 发布日期:2013-08-02
通讯作者: 朱斌，E-mail: binzhu@zju.edu.cn E-mail:geosynthetics@163.com；
作者简介:林伟岸，男，1981年生，博士研究生，主要从事环境土工方面的研究。
基金资助:
国家自然科学基金重点项目（No.50538080）；国家杰出青年科学基金项目（No.50425825）

Tension analysis of geomembrane in landfill slope considering interface strain-softening

LIN Wei-an, ZHU Bin, CHEN Yun-min, ZHAN Liang-tong

MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education, Zhejiang University, Hangzhou 310027, China

Received:2006-12-20 Online:2008-08-11 Published:2013-08-02

摘要/Abstract

摘要： 为分析垃圾填埋场斜坡上防渗系统中的土工膜在上覆垃圾堆体重力作用下产生的拉应力，考虑土工膜-黏土界面的应变软化特性，通过建立土工膜受力的平衡方程获得了土工膜拉应力的解析解。与传统方法相比，该方法可分析土工膜-黏土界面不同位置所处的3种应力状态：弹性状态、软化状态及残余状态，从而使得垃圾填埋场斜坡上土工膜的受力分析更为合理。参数分析显示，当软化阶段的强度损失及残余位移与峰值位移的差值较小时，土工膜-黏土界面的峰值强度对土工膜最大拉应力的影响较小，而其残余强度是主要控制因素；而当土工膜-黏土界面的软化特征较明显时，则峰值强度和残余位移的影响也更为明显。另外，土工膜上覆堆体高度、斜坡坡度及土工膜锚固长度对土工膜拉应力也有较大影响。

关键词: 土工膜, 拉应力, 黏土衬垫, 应变软化

Abstract: In order to analyze the tension in geomembrane placed in landfill slope owing to the weight of municipal solid waste on the sealing liners, analytical solution of geomembrane tension based on equilibrium equation of geomembrane is gained with a strain-softening model of geomembrane-clay interface taken into account. In contrast to the conventional approach, this method can analyze three different stress states of the geomembrane-clay interface: elastic state, softening state and residual state; so it would be more reasonable for analyzing geomembrane tension. Parametric studies show that if the strength of loss in softening phase and the difference between residual displacement and peak displacement is small; the peak shear strength of the geomembrane-clay interface has a small effect on the geomembrane tension; and the maximal tension of the geomembrane mainly depend on its residual shear strength. Contrarily, if the softening characteristic of the geomembrane-clay interface is obvious; the influence of the peak strength and residual displacement is more notable. In addition, the height of the waste or the cover clay on the liners, the angle of slope and the length of geomembrane also have heavily effects on its tension.

Key words: geomembrane, tension, clay liner, strain-softening

中图分类号:

TU 470

林伟岸，朱斌，陈云敏，詹良通. 考虑界面软化特性的垃圾填埋场斜坡上土工膜内力分析[J]. , 2008, 29(8): 2063-2069.

LIN Wei-an, ZHU Bin, CHEN Yun-min, ZHAN Liang-tong. Tension analysis of geomembrane in landfill slope considering interface strain-softening[J]. , 2008, 29(8): 2063-2069.

参考文献

相关文章 15

[1]	金俊超, 佘成学, 尚朋阳. 基于应变软化指标的岩石非线性蠕变模型[J]. 岩土力学, 2019, 40(6): 2239-2246.
[2]	徐鹏, 蒋关鲁, 雷涛, 刘琪, 王智猛, 刘勇, . 考虑填土强度的加筋土挡墙动位移计算[J]. 岩土力学, 2019, 40(5): 1841-1846.
[3]	王凤云, 钱德玲, . 基于统一强度理论深埋圆形隧道围岩的剪胀分析[J]. 岩土力学, 2019, 40(5): 1966-1976.
[4]	王腾, 吴瑞. 黏土中海底管线竖向贯入阻力研究[J]. 岩土力学, 2019, 40(3): 871-878.
[5]	王凤云，钱德玲. 基于切向应变软化的深埋圆形隧道围岩弹塑性分析[J]. , 2018, 39(9): 3313-3320.
[6]	李波，肖先波，徐唐锦，周嵩，. 泥皮存在时防渗墙与复合土工膜联接型式模型试验[J]. , 2018, 39(5): 1761-1766.
[7]	王振，叶晓明，刘永新，. 考虑滑坡渐进破坏的改进简布条分法[J]. , 2018, 39(2): 675-682.
[8]	邓琴，汤华，王东英，秦雨樵，吴振君，. 基于应变软化的多阶边坡稳定分析[J]. , 2018, 39(11): 4109-4116.
[9]	姚囝，叶义成，王其虎，岳哲，罗斌玉，. 基于量纲分析的缓倾斜空区顶板稳定性的影响规律研究[J]. , 2018, 39(11): 4232-4241.
[10]	王宝，董兴玲，. 不同有效应力下矿山渗滤液对土工合成黏土衬垫渗透特性影响的试验研究[J]. , 2017, 38(5): 1350-1358.
[11]	刘冬桥，王焯，张晓云, . 岩石应变软化变形特性及损伤本构模型研究[J]. , 2017, 38(10): 2901-2908.
[12]	范志强，唐辉明，汪丁建，刘凯，温韬. 考虑土体应变软化特性的滑坡抗滑桩设计推力研究[J]. , 2016, 37(S2): 665-672.
[13]	韩龙强，吴顺川，李志鹏, . 基于Hoek-Brown准则的非等比强度折减方法[J]. , 2016, 37(S2): 690-696.
[14]	蒋欢，王水林，王万军,. 一种求解应变软化岩体中球腔问题的数值方法[J]. , 2016, 37(S2): 697-705.
[15]	刘刚，姜清辉，熊峰，张小波,. 多节理岩体裂纹扩展及变形破坏试验研究[J]. , 2016, 37(S1): 151-158.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed