船闸闸首预留宽缝施工仿真分析

Construction simulation analysis of ship lock with wide construction joints

规模较大的船闸闸首,若按全底板浇筑的施工方法进行施工,由于底板较厚,荷载分布不均匀等因素,在施工过程中底板易出现裂缝。结合工程实例,利用大型通用有限元软件ANSYS对某工程船闸下闸首分别按全底板施工方法和预留宽缝施工方法进行了三维仿真设计分析。结果表明,预留宽缝的施工方法可大大降低船闸闸首底板的弯矩和应力,改善闸首底板受力状态。

Due to the thick bottom floor and the uneven load distribution etc. at the head of a large ship lock, cracks may oc-cur at the bottom floor if integral pouring construction is conducted for the whole bottom floor. The large general finite element software ANSYS was used to conduct 3D simulation analysis on 2 construction methods, namely integral pouring construction for whole bottom floor and bottom slab pouring with wide joints for a ship lock. The results show that the stress and moment at bottom floor of the lock head was reduced by setting up wide construction joints, and the stress state of the bottom floor was improved as well.