碾压混凝土压剪强度分析  

Analysis on Compression-shear Strength of Roller Compacted Concrete

作　　者：宋玉普[1] 闻伟[1] 王怀亮[2] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 [2]大连大学建筑工程学院,辽宁大连116622

出　　处：《水利与建筑工程学报》2012年第6期44-47,共4页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金资助项目(50908026);中国博士后基金资助项目(20080441117;200902541)

摘　　要：针对碾压混凝土受压剪作用问题,制作三级配本体、含层面试件和二级配本体、含层面试件,对试件进行单剪和双轴压剪试验,得到不同侧压应力下碾压混凝土的剪切强度。试验结果表明,施工层面削弱了碾压混凝土的抗剪性能;而侧压应力使碾压混凝土的抗剪能力显著提高,压应力越大,抗剪强度越高。根据双剪强度理论处理分析得到碾压混凝土的压剪强度曲线,该曲线与试验数据吻合,说明双剪强度理论真实反映了压剪破坏强度规律。According to the compression-shear action of roller compacted concrete（RCC）,the fault-included specimens of three and two graded-aggregate noumena were produced and used for uniaxial sheared and biaxial compression-shear experiments,so as to get the shear strength with different lateral compression stress.The experimental results prove that the construction-faults would weaken the shear capacity of RCC.However,the lateral compression stress would remarkably improve the shear strength of RCC,moreover,the greater the compression stress,the higher is the shear strength.Based on the twin shear strength theory,the compression-shear strength curves would be calculated and obtained.All the curves would coincide with test data.It is verified that the twin shear strength theory could truly reflect the law of compression-shear failure strength.

关 键 词：碾压混凝土 压剪强度 双剪强度理论 

分 类 号：TV642.2[水利工程—水利水电工程]