不同袋内材料对土工袋单元体静动力剪切特性的影响
作者:
作者单位:

(1.中水北方勘测设计研究有限责任公司,天津300222;2.河海大学水利水电学院,江苏 南京210098;3.中国水利水电科学研究院结构材料研究所,北京100038;4.中国电建集团华东勘测设计研究院有限公司,浙江 杭州330110)

作者简介:

陈爽(1996—),男,助理工程师,硕士,主要从事水工结构设计研究。E-mail:shuangchen@hhu.edu.cn

中图分类号:

TU43

基金项目:

国家重点研发计划(2017YFE0128900); 国家自然科学基金(52109123)


Influence of different filling materials on monotonic and cyclic direct shear behaviors of single soilbag
Author:
Affiliation:

(1.China Water Resources Bei Fang Investigation, Design and Research Co. Ltd., Tianjin 300222, China;2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China;3.Department of Structure and Materials, China Institute of Water Resources and Hydropower Research, Beijing 100038, China;4.Power China Huadong Engineering Corporation, Hangzhou 330110, China)

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    摘要:

    为了进一步研究不同袋内填充材料对土工袋单元体在静动力作用下剪切特性的影响,采用室内大型剪切系统对不同袋内填充材料土工袋单元体进行了一系列单剪试验和循环剪切试验。结果表明:土工袋单元体表现出的剪切变形规律基本符合摩尔库仑屈服准则,其抗剪强度主要由土工袋表面张力和袋内土体颗粒之间的摩擦力共同提供;不同袋内填充材料对土工袋单元体的剪切变形特性有一定的影响,相对于壤土土工袋、碎石土工袋,天然河砂土工袋单元体的抗剪强度、阻尼消能效果与抵抗变形的能力均相对更好,因此从抗剪强度及减振消能特性的角度看,实际减隔震工程中采用河砂装填是一个较好的选择。

    Abstract:

    In order to further investigate the static and dynamic characteristics of single soilbag filled with different materials, a series of simple shear tests and cyclic shear tests were performed through a large indoor shear apparatus. The test results show that the shear behavior of single soilbag follows the Mohr-Coulomb failure criterion basically, and its shear-resistant properties is mainly provided by the surface tension of the soilbag and the friction between soil particles in the soilbag. Different filling materials have a certain influence on the shear characteristics of single soilbag. By comparing the static and dynamic characteristics of single soilbag filled with river sand, loam and gravel respectively, it can be found that the single soilbag filled with river sand has the best shear performance, vibration and energy reduction effect, and deformation resistance ability. Therefore, it’s a good choice to use river sand as a common building material for loading in practical earthquake isolation engineering, from the perspective of shear resistance, vibration reduction and energy dissipation characteristics of single soilbag.

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陈爽,刘斯宏,鲁洋,等.不同袋内材料对土工袋单元体静动力剪切特性的影响[J].河海大学学报(自然科学版),2023,51(1):90-98.(CHEN Shuang, LIU Sihong, LU Yang, et al. Influence of different filling materials on monotonic and cyclic direct shear behaviors of single soilbag[J]. Journal of Hohai University (Natural Sciences),2023,51(1):90-98.(in Chinese))

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  • 收稿日期:2022-02-10
  • 在线发布日期: 2023-03-15