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基于FLAC 3D的单桩竖向抗压静载试验模拟研究 被引量:4

Simulation Research of Monopile Vertical Compressive Static Load Tests Based on FLAC 3D
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摘要 依据软土地区某工程试桩的施工参数、场地工程地质条件及现场实测的试桩竖向抗压静载试验数据,采用三维连续介质拉格朗日法有限差分软件(FLAC 3D)建立计算模型,对试桩的单桩竖向抗压承载特性及桩顶沉降变形进行数值模拟分析,并将数值模拟结果与实测的静载试验数据对比分析。研究表明,数值模拟得到的单桩竖向抗压极限承载力、不同深度桩身轴力的分布及桩侧摩阻力分布,与静载试验实测结果类似,两者相互补充、相互验证。根据计算模型,提供了单桩的极限承载力推荐值,为桩基工程实践中基桩极限承载力的取值提供建议。 Based on piles construction parameters,geological conditions and the results of vertical compressive static load tests,Numerical simulation analysis of vertical bearing capacity of the test piles and the vertical settlement of the test piles were carried out by using the three-dimensional continuous medium rapid finite-difference finite difference software(FlAC 3D).The numerical simulation results and the measured results of vertical compressive static load tests were compared.The results show that the ultimate bearing capacity of single pile foundation,the distribution law of axial force along pile depth and the distribution law of pile side friction are similar to the measured results,and they complement each other and verify each other.In this paper,the recommended value of the bearing capacity of pile is given according to the model,which provides suggestions for the application of piles in engineering practice.
作者 刘骏龙 LIU Junlong(Fuzhou Architectural Design Institute Co.,Ltd.,Fuzhou 350011)
出处 《福建建筑》 2021年第8期91-95,100,共6页 Fujian Architecture & Construction
关键词 静载试验 FLAC 3D 侧摩阻力 极限承载力 Pile Static load test FLAC 3D Side friction Ultimate bearing capacity
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