Rheological model considering creep of geosynthetics for reinforced soil

LI Li-hua; WANG Zhao; CHEN Lun

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Rheological model considering creep of geosynthetics for reinforced soil

更新时间：2026-06-25

- Rheological model considering creep of geosynthetics for reinforced soil
- Vol. 28, Issue 8, (2007)
- 作者机构：
  
  1. 清华大学水利水电工程系,北京,100084
  2. 武汉大学土木建筑工程学院,武汉,430072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU472
- Online First：15 October 2013，
  
  Published：2007
- 稿件说明：
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LI Li-hua, WANG Zhao, CHEN Lun. Rheological model considering creep of geosynthetics for reinforced soil[J]. 2007, 28(8).
DOI：

LI Li-hua, WANG Zhao, CHEN Lun. Rheological model considering creep of geosynthetics for reinforced soil[J]. 2007, 28(8). DOI：

摘要

把加筋土体的分析看成黏弹性阶段和黏弹塑性两个阶段。考虑筋材的蠕变特性，给出了黏弹性阶段加筋体的弹性应变、筋材的应力和土体的水平微观应力。由方程可知，随着时间的增长，筋材发生按负指数衰减的应力松弛，筋材的应力降低、应变增加。给出了塑性阶段开始到达的时间和变形，在黏弹塑性阶段，加筋体中应力保持恒定，整个应变由于蠕变的发生逐渐增加。由此可针对具体的工程例子分析加筋土体的应力和变形情况，尽量减轻由于加筋土体强度、稳定性降低、变形增加造成的严重后果。

Abstract

The analysis of reinforced soil is regarded as two stages: viscoelastic stage and visco-elastoplastic stage. The creep performance of geosynthetics is considered. Elastic strain of reinforced soil

stress of geosynthetics and horizontal microstress of soil in viscoelastic stage are given. Stress relaxation appears weakening by negative index as the time increasing. At the same time strain of geosynthetics is increasing. The time and deformation corresponding to initiation of the plastic stage are given. Stress in the reinforcement remains constant in visco-elastoplastic stage. But the deformation remains increasing due to creep. Therefore the stress and strain in reinforced soil can be analyzed in different cases history. Then severe consequence due of strength and stability weakening and deformation increasing

can be reduced.

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