陆水蒲圻水利枢纽溢流坝段闸墩加固措施研究

Study on the cause of cracking and strengthening technology for sluice pier cracks in flooding monolith of Lushui Puqi hinge

采用三维钢筋混凝土有限元法对陆水蒲圻宽缝重力坝闸墩纵缝下端出现裂缝的情况进了多种工况的计算。结果表明裂缝是由温度荷载、水荷载以及坝体本身自重的共同作用造成的 ,在现有荷载状况下 ,闸墩裂缝有进一步发展的趋势。因此提出了粘贴钢板的加固处理措施 ,并对钢板在闸墩上的搭接长度进行了敏感性分析 。

3-D RC FEM has been adopted to analyze the causes of sluice cracks in a slotted gravity dam.The results show that cracks are caused by the combined effects of temperature load,water load and structure weight.Besides,the cracks may be further developed so that the reinforcement scheme of sticking steel plate is suggested.On the basis of sensitivity analysis of steel plate size,another preferable reinforcement scheme is also recommended.