灌注桩的重复利用对水闸结构静动力的影响研究

Study of Influence of Bored Pile Reuse on Static and Dynamic Performances of Sluice

从一个需拆除重建的水闸工程中老闸灌注桩的利用问题出发,采用有限元分析软件ADINA建立能反映水闸结构和地基土特点的三维有限元模型.详细研究了水闸在挡水工况下的静动力响应,对比有无老闸灌注桩2种情况下闸室结构的位移应力情况.结果发现,合理利用老闸灌注桩能够减小沉降,改善结构的应力分布,提高结构的抗震安全性能.

Starting from the reuse of bored piles of the old sluice in a sluice project which needs to be rebuilt, finite element analysis software ADINA is adopted to establish a 3Dfinite element model that can reflect the characteristics of sluice structure and foundation soil.The static and dynamic responses of the sluice in the retaining water case are studied;and the displacements and stresses of the sluice chamber in two cases with and without the old bored piles are compared.The results show that if the bored piles of the old sluice are rationally used,they can improve the stress distribution and enhance the aseismic safety peformance.