杭州湾大桥南岸超长栈桥钢管桩水平极限承载力分析

杭州湾大桥南岸超长栈桥钢管桩基础的水平承载力，是保障栈桥结构安全的关键因素之一。栈桥桥住处的风、浪、潮、冲刷等恶劣环境因素的不确定性，给栈桥的设计与施工带来了严峻的挑战。通过研究栈桥钢管桩基础的物理边界条件，探讨了水平极限承载力的判定准则，同时应用非线性桩土相互作用计算模型，进行了桩基水平承载力分析，从而评价了栈桥结构安全度。

Ultimate Lateral Bearing Capacity Analysis of the Tubular Steel Piles of the Super-long Trestle at South-bank of Hangzhou Bay Bridge

The lateral bearing capacity of the tubular steel piles of the super-long trestle bridge for Hangzhou Bay Bridge in south-bank is one of essential factors to the safety of the trestle bridge.It is a great challenge to the trestle bridge's design and construction because of the uncertainty of the wind,wave,tide and local scour occurred at the site.The physical boundary conditions of the tubular steel piles of the trestle are studied.The criterion for the ultimate lateral bearing capacity is discussed.By using the model of non-linear interaction between the piles and the soil,the ultimate lateral bearing capacity of the piles is analyzed and the safety degree for the trestle structure is thereby appraised.