混凝土结构动力模型破坏试验相似关系的新概念  

A New Consideration:Similarity Relationship for Dynamic Concrete Structural Model Failure Test

作　　者：陆路 左春愿[1,2,3] 孙新国 刘久涵 闫垒 LU Lu;ZOU Chunyuan;SUN Xinguo;LIU Jiuhan;YAN Lei(Faculty of Management Engineering,Huaiyin Institute of Technology,Huaian 223003,Jiangsu,China;Jiangsu Smart Factory Engineering Research Center,Huaian 223000,Jiangsu,China;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China)

机构地区：[1]淮阴工学院管理工程学院,江苏淮安223003 [2]江苏智能工厂工程研究中心,江苏淮安223000 [3]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024

出　　处：《水力发电》2021年第7期66-68,115,共4页Water Power

基　　金：国家自然科学基金资助项目(51741904);大连理工大学海岸和近海工程国家重点实验室项目(LP1714)。

摘　　要：建议在动力模型破坏试验中,放弃混凝土材料的断裂强度比尺与长度比尺相等的要求。首次提出了破坏荷载强度比尺的概念,给出了破坏荷载强度比尺与混凝土材料的断裂强度比尺相等的新关系,这样可以减轻对模型材料的要求,可在一定范围内自由选择模型材料的断裂强度,从而可以提高动力破坏试验结果的可重复性。开展了强冲击引起的混凝土高坝损伤试验和强地震引起的混凝土高坝断裂试验,通过这2个算例验证了模型试验使用破坏荷载强度比尺的可行性。It is recommended to abandon the requirement that the breaking strength scale of concrete materials is equal to the length scale in the dynamic model failure experiments.For the first time,the concept of the failure load strength scale is proposed,and a new relationship that the failure load strength scale is equal to the breaking strength scale of the concrete materials is put forward.The new concept and relationship can reduce the requirements on model materials,and the breaking strength of model materials can be freely selected within a certain scope,which can improve the repeatability of dynamic fracture experiment results.Two kinds of failure tests of the high concrete dam damage caused by strong impact and strong earthquake are carried out respectively.Based on these tests,the application of the new concept is illustrated.

关 键 词：混凝土结构 动力模型破坏试验 相似关系 破坏荷载强度比尺 

分 类 号：TV642.3[水利工程—水利水电工程] TV698.23