摘要
应用损伤力学和断裂力学理论,求解出冻胀力作用下混凝土裂纹扩展前后的应变能,建立了基于能量守恒原理的裂纹扩展和损伤模型,并从细观裂纹扩展角度探讨了碳化对冻融的影响,提出了冻融与碳化交替作用时混凝土的损伤模型。研究表明,两者交替作用下,渡槽混凝土冻融损伤有所延缓。
Applying the theories of damage mechanics and fracture mechanics,models of crack expansion and freeze-thaw damage were built based on the law of conservation of energy.And the influence between freeze-thaw damage and carbonization was explored in terms of microcosmic crack expansion.The results indicated that freeze-thaw damage was postponed under the alternate action.
出处
《南水北调与水利科技》
CAS
CSCD
2009年第6期234-236,266,共4页
South-to-North Water Transfers and Water Science & Technology
基金
"十一五"国家科技支撑计划重大项目"大流量预应力渡槽设计与施工技术研究"(2006BAB04A05)
关键词
渡槽
冻融与碳化交替
耐久性
能量守恒原理
aqueduct
the alternate action of freeze-thaw damage and carbonization
durability
law of conservation of energy
