混凝土断裂韧度 K_(ⅠC) 尺寸效应极限值的讨论

Discussion on limiting value of K ⅠC of concrete

根据Ｗｅｉｂｕｌ脆性破坏统计理论，假定大尺寸混凝土试件ＫⅠＣ的统计分布和小尺寸试件服从同样的Ｗｅｉｂｕｌ分布，可以得到大、小试件ＫⅠＣ的尺寸效应关系式．在此基础上，本文进行了数学分析，对诸如大坝这样的大体积混凝土结构，提出了断裂韧度ＫⅠＣ的极限值的看法．

For Weibull's statistics theory of brittle rupture, the relation of K ⅠC between big and small specimens has been obtained to assume that they have the same distribution. The limiting value of K ⅠC of large concrete structures such as dam is given through analysis and research. It will contribute to analysing and calculating the crack problems of dam.