考虑后期维护费用的高桩码头结构优化  

Structural optimization of high-piled wharf considering maintenance cost in later period

作　　者：卓文雅 尹涛[1] 李荣庆[1] ZHUO Wen-ya;YIN Tao;LI Rong-qing(CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007,China)

机构地区：[1]中交水运规划设计院有限公司,北京100007

出　　处：《水运工程》2021年第10期194-198,共5页Port & Waterway Engineering

摘　　要：高桩码头建成后,受水工结构桩基的影响,水动力条件发生变化,部分地区码头面下部泥沙淤积较为严重。为保证码头结构安全,码头下方和后方在后期需要定期疏浚,维护困难且费用较高。为使工程初期投入和后期维护成本达到最优,考虑桩基与土之间的相互作用,采用三维实体有限元分析方法,结合某工程实例分析了泥沙淤积对码头基桩的影响。根据分析结果和结构受力特点,针对不同结构方案进行了优化计算和成本分析。分析表明:桩顶弯矩较大的向岸基桩采用钢管桩、其余基桩采用混凝土大管桩组合桩,工程初期投入和维护成本最优。After the construction of high-piled wharf,due to the influence of the pile foundation of the hydraulic structure,the hydrodynamic conditions have changed,and the sediment deposition of the lower part of the wharf surface in some areas is serious.To ensure the safety of the wharf structure,the bottom and rear of the wharf need to be maintained by dredging regularly in the later stage,which is difficult to maintain and expensive.To optimize the initial investment and later maintenance cost of the project,taking into account the interaction between the pile and the soil is considered,and the 3D solid finite element analysis method is used to analyze the impact of sedimentation around the wharf foundation piles based on an engineering example.The optimization calculation and cost analysis are carried out for different structural schemes based on the analysis results and structural force characteristics.The analysis shows that the initial investment and maintenance cost of the project are optimal when steel pipe piles are used for the shoreward raking piles with large pile top bending moment and concrete large pipe pile combination piles are used for the rest of the foundation piles.

关 键 词：淤积 高桩码头 不同桩型 桩芯混凝土 

分 类 号：U656.113[交通运输工程—港口、海岸及近海工程]