首页|期刊导航|哈尔滨工业大学学报（英文版）|Experimental study on tensile failure process of double-K fracture parameters in roller compacted concrete layer
哈尔滨工业大学学报（英文版）2008，Vol.15Issue(3)：378-382,5.
Experimental study on tensile failure process of double-K fracture parameters in roller compacted concrete layer
Experimental study on tensile failure process of double-K fracture parameters in roller compacted concrete layer
摘要
Abstract
Study on failure of soft stratum of roller compacted concrete (RCC) is an important aspect of stability of high RCC dam. Six kinds of specimens with different interfaces were investigated by wedge splitting method. Double-K fracture parameters (initial fracture parameter and unsteady fracture parameter) were calculated by the concrete double-K fracture theory. It is indicated that the approach of construction joint or old joint after RCC final set is the most efficient among the six cases, and its fracture parameter is the largest among them. Its propagation path is sinuous. Its failure surface is scraggly. Bedding plane crack fails at the underside of the concrete surface, bond course or the surface between them for each approach. So disturbance on the underside of the concrete surface should be avoided or decreased at best during RCC construction.关键词
RCC/ bedding plane crack/wedge splitting/ double-K fracture parametersKey words
RCC/ bedding plane crack/wedge splitting/ double-K fracture parameters分类
建筑与水利引用本文复制引用
HUANG Zhi-qiang,SONG Yu-pu,WANG Xue-zhi..Experimental study on tensile failure process of double-K fracture parameters in roller compacted concrete layer[J].哈尔滨工业大学学报（英文版）,2008,15(3):378-382,5.基金项目
Sponsored by the National Natural Science Foundation of China (Grant No.50179002) and Liaoning Province Dr. Fund Opening Foundation of China. （Grant No.50179002）
