船闸裂缝成因及加固措施的研究

Study on Cause of Cracking and Improvement Measures of a Lock

采用钢筋混凝土有限元法,分析某船闸的裂缝成因、危害和加固措施.计算结果表明,裂缝是由于结构未配置温度钢筋,由寒潮作用引起的.因此,即使在气候温暖的南方,大体积(或尺寸较大)混凝土结构也应配置温度钢筋.同时分析表明,此结构采用拼缝盖梁加固是可行的、且经济方便.实践证明,钢筋混凝土有限元法是分析非杆系结构受力过程的一种有效方法.

In the paper,the reinforced concrete FEM is used to analyze the causes and detriment of cracks in a lock,and improvement measures of the structure.The numerical results show that the cracks are caused by cold wave by lack of temperature reinforcements in the structure.Consequently,temperature reinforcements should be arranged in mass con-crete structures,even in the warm south areas.The results also show it is effective and convenient for structure to be improved using reinforced concrete beams by which the cracks can be closed.It is proved that reinforced concrete FEM is an ef-fective way for non-linear analysis of the mass reinforced concrete structure through the practice in the paper.