基岩-混凝土胶结面剪切强度JRC-JCS模型研究
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摘要
通过室内直剪试验,系统地研究了粗糙度、正应力对混凝土与基岩胶结面抗剪强度的影响,从而提出微风化花岗岩 混凝土胶结面剪切强度的JRC JCS模型,并给出了该模型的粗糙度适用范围.该模型考虑了粗糙度和正应力对胶结面剪切强度的影响,解释了剪切试验结果.此外,讨论了胶结面剪切强度的尺寸效应,给出粗糙度系数JRC与胶结面尺寸的关系式,为工程设计提供参考依据.
Based on a systematical study of the effects of roughness and normal stress on the shear strength of bedrockconcrete cement planes through laboratory direct shear tests, a JRCJCS model is developed for slightly weathered graniteconcrete cement planes, and the scope of roughness in which the model can be used is given. With the model, the results of shear tests can be explained. Besides, the size effect of the shear strength of cement planes is discussed, and the relationship between the coefficient of roughness and size of cement planes is also derived, providing a basis for reference for engineering design.
引文
[1]杜时贵.岩体结构面的工程性质[M].北京:地震出版社,1999.48—82.
    [2]BARTONN,CHOUBEYV.Theshearstrengthofrockjointsintheoryandpractice[J].RockMech,1977.10:1—54.
    [3]林伟平,田开圣,曾广平.影响混凝土与基岩胶结面抗剪强度的主要因素研究[J].水利学报,1985(10):8—16.
    [4]贺有富.胶结面抗剪分析[J].岩土工程学报,1986,8(3):1—6.
    [5]陈愈炯.对"胶结面抗剪分析"一文的讨论[J].岩土工程学报,1986,8(5):91—92.
    [6]郭志.法向压力对岩体抗剪力学特性的影响[J].水文地质工程地质,1994(2):14—16.
    [7]尤明庆,邹友峰.关于岩石非均质与强度尺寸效应的讨论[J].岩石力学与工程学报,2000,19(3):391—395.
    [8]刘宝琛,张家生,杜奇中,等.岩石抗压强度的尺寸效应[J].岩石力学与工程学报,1998,17(6):611—614.
    [9]章仁友,杜时贵.岩体结构面力学行为的尺寸效应研究[J].地质科技情报,1993,12(2):97—104.

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