基于ABAQUS的闸室结构有限元分析

FINITE ELEMENT ANALYSIS OF THE SLUICE CHAMBER STRUCTURE BASED ON THE ABAQUS

以某水闸工程为例,利用ABAQUS分析软件,将水闸和地基作为一整体,考虑闸室与地基间的接触作用,建立三维有限元模型。闸室材料采用线弹性模型,地基土采用理想弹塑性模型。从完建期、设计洪水位、校核洪水位等三种工况对闸室结构进行有限元分析,计算相应工况下的应力和位移。结果表明:在完建工况下,边墩外侧受拉,内侧受压,但设计与校核工况下应力情况相反。三种工况下闸室位移和应力变化都在规范允许范围内,不需配置受力钢筋,只需配置适量的构造钢筋,就能保证水闸安全运行,从而减少不必要的工程投资。

This paper selects a sluice chamber structure as calculated model using ABAQUS, take the floor pier and foundation as a whole frame, considering interaction of them, establishing a finite ele- ment model. Chamber concrete use linear elastic model, foundation soil use elastoplastic model. This paper analysis the model in three conditions by the period of construction finishing, the design condition, the check conditions. The results indicate that in the period of construction finishing, the side pier out- side is under tension, the inside is under pressure, but in the design and checking conditions , its stress is contrary. Three kinds of conditions sluice chamber displacement and stress changes were in specifica- tion to the extent permitted , without configuring the reinforced , simply configure the amount of structur- al steel , we can ensure the safe operation of sluices and to reduce unnecessary investment in public works.