碾压混凝土诱导缝断裂性能试验分析  

Experimental analysis for fracture character of equivalent strength for RCC crack directors

作　　者：徐宗超[1] 王学志[1] 毕重[1] 李洋[1] 

机构地区：[1]辽宁工业大学土木建筑学院,辽宁锦州121001

出　　处：《混凝土》2011年第3期55-58,共4页Concrete

基　　金：国家自然科学基金(50709013)

摘　　要：针对多种因素可能对诱导缝开裂产生的影响，进行了碾压混凝土单向间隔诱导缝和双向间隔诱导缝轴拉试验。通过对试验结果进行分析，得到了诱导缝等效强度与诱导片数量及削弱度的关系。通过荷载位移和荷载应变曲线对碾压混凝土诱导缝断裂扩展规律进行了分析，得到了诱导缝由起裂向稳定扩展临界荷载在最大荷载的50％-60％之间等结论。According to some factors＇ effect on fracture of crack directors, the axial tension tests for unidirectional interval crack directors＇ and bilateral interval crack directors specimens were carried out.The relationship between equivalent strength for crack director and the number of crack director and weaken level was gotten by analyzing the test results.the fracture expand law for RCC crack director was analyzed through the load displacement and load-strain curves, and it is indicated that critical load between initial fracture and steady fracture for crack director is the 50%-60% of the max load.

关 键 词：诱导缝 等效强度 轴拉试验 削弱度 断裂特性 

分 类 号：TU528.01[建筑科学—建筑技术科学]