循环荷载作用下小间距加筋土动力响应特性试验研究

赵建斌; 白晓红; 谢明星; 郑俊杰

doi:10.11835/j.issn.2096-6717.2022.110

您当前的位置：

首页 >

文章列表页 >

循环荷载作用下小间距加筋土动力响应特性试验研究

土木工程 | 更新时间：2023-11-21

- 循环荷载作用下小间距加筋土动力响应特性试验研究
- Experimental study on dynamic response characteristics of small-spaced reinforced soil under cyclic loading
- 土木与环境工程学报 2023年45卷第6期页码：125-133
- 作者机构：
  
  1.太原理工大学土木工程学院，太原 030024
  2.华中科技大学土木与水利工程学院，武汉 430074
- 作者简介：
  
  赵建斌（1983- ），男，高级工程师，主要从事岩土工程与公路路基研究，E-mail：zjbhust@hotmail.com。
  郑俊杰（通信作者），男，教授，博士生导师，E-mail：zhengjj@hust.edu.cn。
- 基金信息：
  
  国家自然科学基金(52008285;52178341;52078236);山西交通控股集团有限公司科技项目(18-JKKJ-23)
- DOI：10.11835/j.issn.2096-6717.2022.110
  中图分类号： TU431;U416.1
- 收稿：2022-08-24，
  
  纸质出版：2023-12-25
- 稿件说明：
移动端阅览
赵建斌,白晓红,谢明星等.循环荷载作用下小间距加筋土动力响应特性试验研究[J].土木与环境工程学报,2023,45(06):125-133.

ZHAO Jianbin,BAI Xiaohong,XIE Mingxing,et al.Experimental study on dynamic response characteristics of small-spaced reinforced soil under cyclic loading[J].Journal of Civil and Environmental Engineering,2023,45(06):125-133.
赵建斌,白晓红,谢明星等.循环荷载作用下小间距加筋土动力响应特性试验研究[J].土木与环境工程学报,2023,45(06):125-133. DOI： 10.11835/j.issn.2096-6717.2022.110.

ZHAO Jianbin,BAI Xiaohong,XIE Mingxing,et al.Experimental study on dynamic response characteristics of small-spaced reinforced soil under cyclic loading[J].Journal of Civil and Environmental Engineering,2023,45(06):125-133. DOI： 10.11835/j.issn.2096-6717.2022.110.

摘要

基于山西省太行一号风景道K43+175处加筋土桥台工程，开展不同加筋间距工况条件下加筋砂土的动三轴试验，分析循环荷载作用下加筋间距对加筋砂土动强度、动剪切模量、阻尼比、累积塑性应变等动力响应特性的影响，探讨加筋砂土动力响应特性的演化规律，从而为加筋土柔性桥台复合结构（Geosynthetic Reinforced Soil Integrated Bridge System，GRS-IBS）工程设计中的变形预测和稳定状态评估提供依据。结果表明：随加筋层数的增加，加筋砂土动应力-动应变曲线逐渐由双曲线型过渡为直线型，试样动强度和动模量也随之增大，且加筋越密，增幅越明显；增大围压和增加加筋层数均能减小动剪应变，提升动剪切模量，减小阻尼比；增加加筋层数能有效抑制轴向累积塑性应变随循环荷载作用增长的趋势，因此，在GRS-IBS结构中应控制加筋间距，以提高加筋土的临界循环应力比，保证其处于长期动力稳定状态。

Abstract

Based on the project of GRS-IBS in Taihang No.1 Tourism Road K43+175 in Shanxi Province

a series of dynamic triaxial tests of reinforced sand with different reinforcement spacings were carried out. To provide reference for deformation prediction and condition evaluation during design process of GRS-IBS

the influence of the reinforcement spacing on the dynamic response characteristics such as dynamic strength

dynamic shear modulus

damping ratio and cumulative plastic strain were analyzed respectively. The evolution patterns of dynamic response characteristics were also discussed. The results show that the type of dynamic stress-strain curve changes from hyperbolic to linear with the increase of the number of reinforced layers

and the peak as well as dynamic strength and dynamic modulus are also improved; the denser the reinforcement

the greater the increase would be. Increasing the confining pressure or the number of reinforced layers can reduce both the dynamic shear strain and the damping ratio but increase the dynamic shear modulus. The axial plastic strain can be inhibited effectively by increasing the number of reinforcement layers under the cyclic loading

so that the reinforcement spacing in GRS-IBS structure should be controlled to raise the cyclic stress ratio and maintain the long-term dynamic stability of the reinforced soil.

关键词

Keywords

references

徐超 , 罗敏敏 . GRS结构与MSE结构的性能差异及评价方法 [J]. 长江科学院院报 , 2019 , 36 ( 3 ): 1 - 7 .

XU C , LUO M M . Differences in performance and evaluation methods between geosynthetic reinforced soil structure and mechanically stabilized earth structure [J]. Journal of Yangtze River Scientific Research Institute , 2019 , 36 ( 3 ): 1 - 7 . (in Chinese)

SAGHEBFAR M , ABU-FARSAKH M Y , ARDAH A , et al . Full-scale testing of geosynthetic-reinforced, soil-integrated bridge system [J]． Transportation Research Record: Journal of the Transportation Research Board , 2017 , 2656 ( 1 ): 40 - 52 ．

罗敏敏 , 徐超 , 杨子凡 . 土工合成材料加筋土柔性桥台复合结构及应用 [J]. 土木工程学报 , 2019 , 52 ( Sup1 ): 226 - 232 .

LUO M M , XU C , YANG Z F . Geosynthetic reinforced soil-integrated bridge system and its applications [J]. China Civil Engineering Journal , 2019 , 52 ( Sup1 ): 226 - 232 . (in Chinese)

赵建斌 , 白晓红 , 郑俊杰 , 等 . 加筋土桥台柔性复合结构设计方法 [J]. 土木与环境工程学报(中英文) , 2023 , 45 ( 4 ): 1 - 9 .

ZHAO J B , BAI X H , ZHENG J J , et al . Design method of geosynthetic reinforced soil-integrated bridge system [J]. Journal of Civil and Environmental Engineering . 2023 , 45 ( 4 ): 1 - 9 . (in Chinese)

ADAMS M T , NICKS J , STABILE T , et al . Geosynthetic reinforced soil integrated bridge system synthesis report [R]. McLean, VA : The US Federal Highway Administration , 2011 .

罗文俊 , 王海洋 , 马斌 , 等 . 单向循环荷载作用下饱和重塑红黏土的动力特性 [J]. 土木与环境工程学报(中英文) , 2020 , 42 ( 2 ): 1 - 9 .

LUO W J , WANG H Y , MA B , et al . Dynamic characteristics of saturated remodeling red clay under uniaxial cyclic loading [J]. Journal of Civil and Environmental Engineering , 2020 , 42 ( 2 ): 1 - 9 . (in Chinese)

孙晋 . 加筋土动力特性试验研究 [D]. 太原 : 太原理工大学 , 2007 .

SUN J . The experimental study on the dynamic behavior of reinforced soil [D]. Taiyuan : Taiyuan University of Technology , 2007 . (in Chinese)

李文旭 , 王宁 , 韩志型 , 等 . 土工格栅加筋黏性土动力性能的试验研究 [J]. 工业建筑 , 2011 , 41 ( 7 ): 66 - 69, 113 .

LI W X , WANG N , HAN Z X , et al . Test research on dynamic behavior of geo-grid reinforced clays [J]. Industrial Construction , 2011 , 41 ( 7 ): 66 - 69, 113 . (in Chinese)

LATHA G M , KRISHNA A M . Seismic response of reinforced soil retaining wall models: Influence of backfill relative density [J]. Geotextiles and Geomembranes , 2008 , 26 ( 4 ): 335 - 349 .

楼增焕 . 交通循环荷载下加筋灰土动三轴试验研究 [D]. 上海 : 同济大学 , 2009 .

LOU Z H . Dynamic triaxial test of reinforced lime-stabilized soil under cyclic traffic loads [D]. Shanghai : Tongji University , 2009 . (in Chinese)

谢婉丽 , 薛建功 , 常波 . 加筋土动力特性的三轴试验研究 [J]. 灾害学 , 2008 , 23 ( Sup1 ): 120 - 124 .

XIE W L , XUE J G , CHANG B . Triaxial test on dynamic properties of reinforced soil [J]. Journal of Catastrophology , 2008 , 23 ( Sup1 ): 120 - 124 . (in Chinese)

黄珏皓 , 王应武 , 陈健 , 等 . 变围压循环荷载作用下超固结软黏土变形特性试验研究 [J]. 岩土工程学报 , 2021 , 43 ( Sup2 ): 245 - 248 .

HUANG J H , WANG Y W , CHEN J , et al . Experimental study on deformation behaviors of overconsolidated clay under cyclic confining pressure [J]. Chinese Journal of Geotechnical Engineering , 2021 , 43 ( Sup2 ): 245 - 248 . (in Chinese)

凌建明 , 王伟 , 邬洪波 . 行车荷载作用下湿软路基残余变形的研究 [J]. 同济大学学报(自然科学版) , 2002 , 30 ( 11 ): 1315 - 1320 .

LING J M , WANG W , WU H B . On residual deformation of saturated clay subgrade under vehicle load [J]. Journal of Tongji University , 2002 , 30 ( 11 ): 1315 - 1320 . (in Chinese)

BATHURST R J , CAI Z . In-isolation cyclic load-extension behavior of two geogrids [J]. Geosynthetics International , 1994 , 1 ( 1 ): 1 - 19 .

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

循环荷载下软黏土阻尼比特性及其简化计算方法

波浪循环荷载作用下滨海软土水平向动力特性试验研究

基于双向循环动三轴试验的熔融石英砂动力特性与液化机制

纤维含量对加筋土宏观和微观特性的影响

加筋土桥台柔性复合结构设计方法