昭平台水库溢洪道闸墩裂缝非线性有限元分析

Non-linear Finite Elenent Analysis for Spillway Pier with Cracks of Zhaopingtai Reservoir

昭平台水库溢洪道建成于 1 970年 ,在运行过程中 ,溢洪道闸墩支座梁附近产生了贯穿性裂缝 .溢洪道作为水利枢纽中的主要建筑物 ,其本身的可靠性是枢纽安全的重要保证 ,因此有必要找出溢洪道闸墩裂缝的成因 ,并分析带裂缝运行的闸墩是否安全、稳定 .对昭平台水库溢洪道闸墩进行非线性有限元分析 ,成功地模拟了裂缝扩展 ,探讨了闸墩支座梁附近混凝土开裂的原因 ,提出了改进措施 .

The spillway piers of Zhaopingtai reservoir was built in 1970. There are lots of cracks near the pedestal beam of the piers in the operating period. The spillway is a main water conservancy facility in a reservior. The safety of the spillway will affect the safety of the whole reservior system. Therefore it is necessary to find out the reason of the cracking and the safety of the spillway piers with cracks. In this paper, the non-linear finite element analysis is applied in the model of crack propagation process for the spillway piers of Zhaopingtai Reservoir. The cause of concret cracking close to the pedestal beam of the pier is discussed in detail. Some engineering measures are also proposed. The achievement of the analytical computation has been applied to the production.