颜启龙, 雷金波. 锥形−有孔柱形组合管桩竖向荷载传递机理分析[J]. 南昌航空大学学报(自然科学版), 2024, 38(4): 33-39. DOI: 10.3969/j.issn.2096-8566.2024.04.004
引用本文: 颜启龙, 雷金波. 锥形−有孔柱形组合管桩竖向荷载传递机理分析[J]. 南昌航空大学学报(自然科学版), 2024, 38(4): 33-39. DOI: 10.3969/j.issn.2096-8566.2024.04.004
Qilong YAN, Jinbo LEI. Analysis of Vertical Load-transfer Mechanism for Taper-cylinder with Holes Combined Pipe-pile[J]. Journal of nanchang hangkong university(Natural science edition), 2024, 38(4): 33-39. DOI: 10.3969/j.issn.2096-8566.2024.04.004
Citation: Qilong YAN, Jinbo LEI. Analysis of Vertical Load-transfer Mechanism for Taper-cylinder with Holes Combined Pipe-pile[J]. Journal of nanchang hangkong university(Natural science edition), 2024, 38(4): 33-39. DOI: 10.3969/j.issn.2096-8566.2024.04.004

锥形−有孔柱形组合管桩竖向荷载传递机理分析

Analysis of Vertical Load-transfer Mechanism for Taper-cylinder with Holes Combined Pipe-pile

  • 摘要: 为探索锥形−有孔柱形组合管桩承载机理,基于荷载传递法,对桩侧土和桩端土分别采用双折线荷载传递模型和线弹性荷载传递模型,推导出锥形−有孔柱形组合管桩竖向荷载−沉降等关系的解析式。为验证理论推导准确性,采用ABAQUS软件进行数值模拟计算。结果表明:理论推导与数值模拟所得承载性状规律较为吻合;锥形−有孔柱形组合管桩沉降值随荷载增加而增加;上部锥段能够有效增强桩体承载性能,且随上部锥度的增加,其沉降值减小幅度呈现先增加后减小的趋势。

     

    Abstract: To explore the bearing mechanism of taper-cylinder with holes combined pipe-pile, the double-broken-line load transfer model and the linear elastic load transfer model are respectively used for the pile-side soil and pile-tip soil. Analytical expressions for the vertical load-settlement relationship of the taper-cylinder with holes combined pipe-pile are derived based on the load transfer method. To verify the correctness of the theoretical derivation, numerical simulations were conducted using ABAQUS software. The results indicate that the theoretical derivation well matches the bearing behavior obtained in numerical simulations. The settlement of taper-cylinder with holes combined pipe-pile increases with the increased load, and the upper conical section can effectively improve the bearing performance. Moreover, as the taper of the upper section increases, the settlement reduction first rises and then declines.

     

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