摘要
针对滨海软土地区高填方路堤的沉降控制问题,以某港路桥头引道工程为背景,采用有限元数值模拟方法,系统研究了不同桩间距及不同布桩形式对地基表面沉降及差异沉降的影响规律。研究结果表明:地基沉降量随桩间距增大呈非线性显著增加趋势,桩间距从1.6 m增至3.2 m时,中心沉降量显著增大;综合考虑沉降控制与经济性,推荐最优桩间距为2.0~2.8 m;在相同桩间距下,与正方形布桩相比,三角形布桩在力学性能与经济性方面均更具优势。研究可为类似软土地基中预应力高强混凝土(prestressed high-strength concrete,PHC)桩网复合地基的优化设计提供理论依据和参考。
In view of the settlement control problem in high-fill embankment in coastal soft soil areas,this paper systematically studies the influence law of different pile spacing and pile arrangement patterns on the foundation surface settlement and differential settlement by finite element numerical simulation method based on a port road bridge approach project.The research results show that the foundation settlement exhibits a significant nonlinear increase with the increasing pile spacing,when the pile spacing increases from 1.6 m to 3.2 m,the central settlement increases significantly;considering both settlement control and economic performance,the optimal pile spacing is recommended to be 2.0-2.8 m;under the same pile spacing,triangular pile arrangement offers superior mechanical performance and economic performance compared with the square pile arrangement.The research can provide theoretical basis and reference for the optimization design of prestressed high-strength concrete(PHC)pile-net composite foundations in similar soft soil foundations.
作者
崔久蕙
CUI Jiuhui(China Bluestar Chengrand Co.,Ltd.,Chengdu 610041,Sichuan,China)
出处
《工程技术研究》
2026年第1期39-41,共3页
Engineering and Technological Research
关键词
PHC桩
桩网复合地基
桩间距
布桩形式
PHC pile
pile-net composite foundation
pile spacing
pile arrangement pattern
