PHC-钢管组合桩在潍坊地区沿海港口建设中的应用  

Application of PHC-steel pipe composite pilein construction of Weifang coastal ports

作　　者：杨晓松 倪晓雯 李春良 YANG Xiaosong;NI Xiaowen;LI Chunliang(Shandong Provincial Communications Planning and Design Institute Co.,Ltd.,Jinan 250101,China;Shandong Construction Engineering Quality Inspection Center Co.,Ltd.,Jinan 250031,China)

机构地区：[1]山东省交通规划设计院集团有限公司,山东济南250101 [2]山东省建筑工程质量检验检测中心有限公司,山东济南250031

出　　处：《水运工程》2024年第3期46-52,共7页Port & Waterway Engineering

摘　　要：在中小型高桩码头设计中,PHC预制管桩具有良好的抗腐蚀性和较高的承载力,应用较为广泛,但其穿透能力和耐打击能力较弱。如山东潍坊沿海地区地层中普遍存在一层埋深浅、厚度大、标贯高的粉砂层,该土层使沉桩施工较为困难,因此提出PHC-钢管组合桩方案。结合某河口区5000吨级多用途码头的桩基变更设计,从桩基设计、有限元分析、静载荷试验、高应变检测方面综合论证方案的合理性,并进一步提出桩基桩端承载力折减系数,为该地区同类项目桩基垂直承载力计算提供了一定的依据。In the design of small and medium-sized high pile wharf,PHC prefabricated pile has good corrosion resistance and high bearing capacity,which is widely used,but its penetration ability and impact resistance are weak.In the coastal area of Weifang,Shandong Province,there is a silty sand layer with shallow burial depth,large thickness and high blow counts,which makes the pile penetration more difficult.Therefore,the PHC-steel pile composite pile is proposed.Based on the pile foundation modification design of a 5000-ton multi-purpose wharf project in river estuary area,the rationality of the scheme is comprehensively demonstrated from the aspects of pile foundation design,finite element analysis,static load test and high strain detection.Furthermore,the reduction factor of pile end bearing capacity is proposed,which provides a certain basis for the calculation of vertical bearing capacity of similar projects in this area.

关 键 词：高桩码头 PHC-钢管组合桩 桩端承载力折减系数 

分 类 号：U65[交通运输工程—港口、海岸及近海工程]