大型膜袋砂围堰稳定性及变形特性分析  

Analysis on Stability and Deformation Characteristic of Large Membrane Bag Sand Cofferdam

作　　者：刘平 张权城 王健球 LIU Ping;ZHANG Quancheng;WANG Jianqiu(The Guangdong No.3 Water Conservancy and Hydro-electric Engineering Board Co.,Ltd.,Dongguan 523710,Guangdong,China;Guangdong Provincial People's Hospital Affiliated to Southern Medical University(Guangdong Academy of Medical Sciences),Guangzhou 510080,Guangdong,China)

机构地区：[1]广东省水利水电第三工程局有限公司,广东东莞523710 [2]南方医科大学附属广东省人民医院(广东省医学科学院),广东广州510080

出　　处：《工程技术研究》2024年第23期131-133,共3页Engineering and Technological Research

摘　　要：随着我国水利工程建设规模的日益扩大,围堰结构的稳定性越发受到重视。大型膜袋砂围堰作为一种新型围堰结构,其稳定性和变形特性成为工程安全性的关键影响因素。文章通过采用室内单轴压缩试验,分析了围堰工程中所用膜袋砂的稳定性与变形特性。结果表明,膜袋砂的力学特性受轴向荷载的影响较为明显,需要综合考虑试样的弹性与塑性变形机制,且要根据具体工程,及时调整膜袋砂的填充度,以达到最佳填充效果,提高围堰结构的稳定性和抗变形能力。研究成果可为大型膜袋砂围堰的设计、施工及安全评估提供可靠的理论依据和技术支持。With the increasing scale of water conservancy engineering construction in China,the stability of cofferdam structure has been paid more and more attention.As a new type of cofferdam structure,the stability and deformation characteristics of large membrane bag sand cofferdam have become the key influencing factors of engineering safety.This paper analyzes the stability and deformation characteristics of membrane bag sand used in cofferdam engineering by indoor uniaxial compressive test.The results show that the mechanical properties of the membrane bag sand are obviously affected by the axial load,and it is necessary to comprehensively consider the elastic and plastic deformation mechanism of the sample,and adjust the filling degree of the membrane bag sand in time according to the specific engineering,so as to achieve the best filling effect and improve the stability and deformation resistance of the cofferdam structure.The research results can provide reliable theoretical basis and technical support for the design,construction and safety assessment of large membrane bag sand cofferdam.

关 键 词：水利工程 膜袋砂围堰 单轴压缩试验 变形特性 

分 类 号：TV551.3[水利工程—水利水电工程]