岸坡与斜坡道桩基相互作用及桩基减载措施  

Interaction between slope and pile of ramp and reduction load of pile

作　　者：梁丰收 何光春[2] 罗建美 

机构地区：[1]中交第二航务工程勘察设计院有限公司,湖北武汉430071 [2]重庆交通大学,重庆400074 [3]中交武汉港湾工程设计研究院有限公司,湖北武汉430040

出　　处：《水运工程》2011年第11期211-217,共7页Port & Waterway Engineering

摘　　要：近年来三峡库区中由于回填形成码头岸坡造成桩基出现较大偏位的工程案例已经出现多起。结合三峡库区某码头工程实例,通过有限元计算分析岸坡与斜坡道桩基的相互作用,讨论了岸坡土体变形对桩基的影响以及桩基对岸坡稳定性的提高。对比分析了不同桩顶约束条件下的桩基受力特性,结果表明连续轨道梁与桩基形成整体框架后,桩基受力情况会有很大程度的改善并且桩身位移明显减小。针对工程实例,提出了两种岸坡桩基减载方案,并通过有限元计算分析验证了方案的有效性和合理性。In recent years,there have emerged many cases that the pier piles take out a larger deviation of the project due to the backfill for the slope.Combining with a wharf project in the Three Gorges Reservoir area,we analyze the interaction between the bank slope and piles of overhead ramp by the finite element method,discuss how the presence of pile foundation improves the slope stability and how the slope soil deformation impacts the pile foundation,contrast the pile＇s inner force and displacement in the pile head free and constrained by a continuous track beam,and reveal that the pile force can be improved and the displacement of pile head can be decreased in the latter case.Based on the engineering projects,we propose two measures to reduce the loads of bank slope pile foundation,which are proved to be effective and rational by the finite element analysis method,and which may serve as a reference for similar projects.

关 键 词：码头岸坡 架空斜坡道 相互作用 桩基减载 

分 类 号：TU476[建筑科学—结构工程] U656.31[建筑科学—土工工程]