某立体桁架结构码头基础设计与研究  

DESIGN AND RESEARCH OF A THREE-DIMENSIONAL TRUSS STRUCTURE WHARF FOUNDATION

作　　者：崔相东 王麟 Cui Xiang-dong;Wang Lin

机构地区：[1]山东省公路检测中心,山东济宁272000 [2]山东鲁抗医药工程设计有限公司,山东济宁272067

出　　处：《建筑技术开发》2023年第10期6-8,共3页Building Technology Development

摘　　要：某带有“L形悬挑”的大跨度码头建筑采用立体桁架结构,桁架内部设有单层房间,用作码头服务房。该码头位于河岸边坡,地质条件比较复杂,边坡土体常年受河流冲刷,存在坍岸及潜蚀风险,因此对基础设计提出了较高的要求。结合岩土工程勘察报告及建筑功能要求,确定了桩基及筏形基础的基础形式,利用筏形自重抵消上部结构倾覆荷载,并设置嵌岩抗拔桩,利用基桩抗压承载力保证整体稳定,利用基桩抗拔力提高结构安全储备,利用基桩水平承载力抵御水平荷载;最后将基础在最不利荷载效应组合下产生的最大水平位移施加于上部结构,反算出上部结构构件应力,计算结果满足规范要求。A large-span dock building with an L-shaped cantilever adopts a three-dimensional truss structure,with a single-story room inside the truss used as a service room for the dock.The dock is located on a riverbank slope with complex geological conditions.The soil on the slope is constantly eroded by the river,posing a risk of bank collapse and erosion.This poses high requirements for the foundation design.In combination with the geotechnical investigation report and the building function requirements,the foundation form of pile foundation+raft foundation is determined.The self weight of the raft is used to offset the overturning load of the superstructure,and rock socketed uplift piles are set up.The compressive bearing capacity of the foundation piles is used to ensure the overall stability,the uplift capacity of the foundation piles is used to improve the structural safety reserve,and the horizontal bearing capacity of the foundation piles is used to resist the horizontal load.Finally,the maximum horizontal displacement generated by the foundation under the most unfavorable load effect combination is applied to the upper structure,and the stress of the upper structure components is calculated in reverse.The calculation results meet the requirements of the specifications.

关 键 词：立体桁架 L形悬挑 大跨度 边坡 河流冲刷 嵌岩抗拔桩 

分 类 号：TU323.4[建筑科学—结构工程]