Plaxis模型验证在多跨连续水闸底板结构的桩基布置优化分析

Plaxis Model Verifies the Optimization Analysis of Pile Foundation Layout in Multispan Continuous Sluice Floor Structure

以某水闸工程采用的多跨连续整体式底板结构为对象,利用Plaxis有限元数值协同分析,探讨均匀和不均匀桩基布置对底板内力和沉降值的影响。通过比较不同桩基布置方案下的内力和沉降值,发现桩基的布置方式对底板弯矩和沉降有显著影响。其中,不均匀布置桩基(尤其是桩基边侧加密布置)在控制底板弯矩和减小不均匀沉降方面更为有效。数值模拟结果显示,桩基边侧加密布置方案下,底板上部最大弯矩显著降低,桩基受力更为均匀。研究结果可为多跨连续水闸底板结构的设计和施工提供理论指导,有助于提高工程的经济性和安全性,同时,也为类似工程中桩基布置优化提供了新的视角和方法。

Taking the multi-span continuous monolithic floor structure used in a sluice project as an object,Plaxis finite element numerical collaborative analysis is used to investigate the influence of uniform and uneven pile foundation layout on the internal force and settlement value of the floor.By comparing the internal force and settlement values under different pile foundation layout schemes,it is found that the pile foundation layout has a significant effect on the bending moment and settlement of the bottom plate.Among them,the uneven arrangement of pile foundation(especially the arrangement of pile foundation edge and side)is more effective in controlling the bending moment of the bottom plate and reducing the uneven settlement.The numerical simulation results show that the maximum bending moment of the upper floor of pile foundation is significantly reduced and the load of pile foundation is more uniform.The research results will provide theoretical guidance for the design and construction of multi-span continuous sluice floor structure,which is helpful to improve the economy and safety of the project,and also provide a new perspective and method for the optimization of pile foundation layout in similar projects.