软土地基上跨渠道钢便桥钢管桩设计优化

Design Optimization of Steel Pipe Piles of Steel Temporary Bridge over Canal on Soft Soil Foundation

文章以厦门市马銮湾地区生态修复项目软土地基钢便桥工程为依托,采用三维有限元数值方法对钢便桥下不同钢管桩布置方案进行了模拟比较,探讨了不同桥面荷载、桩径、横断面桩间距、桩长条件下桩基沉降、桩基最大侧向变形、桥面竖向位移的变化情况,并进一步对不同桩基布置方案下的渠道边坡稳定性作出了分析评价,据此对钢管桩布置方案提出了优化建议。

On the steel temporary bridge project above the soft soil foundation of the Maluan Bay's ecological restoration project in Xiamen City,3D finite element numerical method was used to simulate and to compare different steel pipe pile layouts.The changes of the pile settlement,the maximum lateral deformation,and the displacement of the bridge deck under the cases of deck loads,pile diameters,cross-section spacings,and lengths were discussed.Additionally,the channel slope stability under pile layout were analyzed and evaluated.Based on the above investigations,the design optimization was put forward for the layout of steel pipe piles.