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Theoretical Analysis and Experimental Study of Reinforced Concrete on Fracture Parameters
Author(s): 
Pages: 108-110,113
Year: Issue:  4
Journal: Yellow River

Keyword:  钢筋混凝土三点弯曲试验断裂参数声发射信号;
Abstract: 按照三点弯曲梁断裂试验方法测得试件最大荷载、裂缝张口位移等参数,依据《水工混凝土断裂试验规程》计算出试件的断裂韧度值.分析了钢筋在混凝土中的限裂作用,同时利用声发射技术判断起裂点.试验结果表明:采用声发射振铃计数曲线、事件计数曲线、声发射能量曲线、振幅曲线判断起裂荷载具有较高的准确性;钢筋在混凝土试件中起到限裂作用,钢筋的位置对试件断裂韧度具有一定影响.
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