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古海塘块石强度和变形特性的试验研究

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钱塘江古海塘是块石砌体结构,岩石的强度指标和变形特性对古海塘正常服役至关重要.基于古海塘块石,针对花岗岩进行室内常规三轴试验,对岩样在不同围压下进行强度与变形特性分析.结果表明:花岗岩变形有 5个阶段,在 2.5~10.0 MPa的围压范围内,岩石以剪切破坏为主,其弹性模量、峰值强度、轴向峰值应变随围压的增加而增大,但泊松比与围压的大小没有相关性.
Experimental Study on Strength and Deformation Characteristics of Ancient Seawall Block Stones
The Qiantang River ancient seawalls are block stone masonry structures.The strength index and deformation characteristics of the rock are very important for the normal service of the ancient seawalls.Based on the block stone of the ancient seawalls,the conventional triaxial test was carried out on the granite,and the strength and deformation characteristics of the rock samples were analyzed under different confining pressures.The results show that there are five stages of granite deformation.In the confining pressure range of 2.5 to 10 MPa,shear failure is the main failure stage.The elastic modulus,peak strength and peak axial strain increase with the increase of confining pressure,but Poisson's ratio has no correlation with the magnitude of confining pressure.

granitetriaxial compressionstrengthdeformation

朱沈鸣、李建雄、胡智超、周丞武、陈强

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浙江省钱塘江流域中心,浙江 杭州 310016

中国电建集团华东勘测设计研究院有限公司,浙江 杭州 311122

浙江工业大学土木工程学院,浙江 杭州 310023

花岗岩 三轴压缩 强度 变形

浙江省水利厅科技项目

RB2123

2024

浙江水利科技
浙江省水利河口研究院 浙江省水利学会

浙江水利科技

影响因子:0.294
ISSN:1008-701X
年,卷(期):2024.52(2)
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