【摘 要】
：
本文采用最大骨料粒径均为dmax=20 mm的中、低热水泥混凝土楔入劈拉试件,通过外推法得出无尺寸效应的拉伸强度ft和断裂韧度KIC,并与试验得出的强度值和双K断裂理论计算得出的断裂韧度进行比较,验证了采用外推法确定中、低热水泥混凝土楔入劈拉试件的拉伸强度值ft和断裂韧度值KIC的适用性和可靠性.同时得出了中、低热水泥混凝土楔入劈拉试件在采用外推法确定拉伸强度ft和断裂韧度KIC时较为合适的虚拟裂缝值.
【机 构】
：
昆明理工大学 电力工程学院,云南 昆明 650500;云南省水利水电投资有限公司,云南 昆明 650500
论文部分内容阅读
本文采用最大骨料粒径均为dmax=20 mm的中、低热水泥混凝土楔入劈拉试件,通过外推法得出无尺寸效应的拉伸强度ft和断裂韧度KIC,并与试验得出的强度值和双K断裂理论计算得出的断裂韧度进行比较,验证了采用外推法确定中、低热水泥混凝土楔入劈拉试件的拉伸强度值ft和断裂韧度值KIC的适用性和可靠性.同时得出了中、低热水泥混凝土楔入劈拉试件在采用外推法确定拉伸强度ft和断裂韧度KIC时较为合适的虚拟裂缝值.
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