• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of geomechanics >Improved Calculation Method of Super-Long Pile in Deep Soft Soil Area
【24h】

Improved Calculation Method of Super-Long Pile in Deep Soft Soil Area

机译：深厚软土地基超长桩计算方法的改进

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The exertion of super-long pile skin friction is an asynchronous process in deep soft soil area. The limitation of skin friction on the upper part of pile is much smaller than the lower part of pile. The softening of super-long pile skin friction is also a common phenomenon. Therefore, a new hyperbolic load transfer model is proposed in this paper, which takes into account the softening of pile skin friction and the nonlinear characteristic of pile-soil relative displacement. Meanwhile, a User-Defined Material (UMAT) subroutine is written in FORTRAN language and connected with an ABAQUS interface. The curve of pile skin friction is obtained, which is more consistent with practical engineering. It is further developed into a universally applicable function of super-long piles. The settlement and effective pile length in deep soft soil area can be calculated by a new function with the consideration of super-long pile weight. Example analysis shows that the calculation of axial force distribution of super-long pile, settlement of pile top, and effective pile length are more consistent with pile test results. In summary, the method proposed in this paper can exactly reflect the working characters of super-long pile in practical engineering, which can provide valuable reference for the design of super-long pile. (c) 2018 American Society of Civil Engineers.
机译：超长桩的表皮摩擦作用是深层软土区的一个异步过程。桩上部的皮肤摩擦的限制远小于桩下部的摩擦。超长桩皮肤摩擦的软化也是普遍现象。因此，本文提出了一种新的双曲线荷载传递模型，该模型考虑了桩表皮摩擦的软化和桩土相对位移的非线性特性。同时，用FORTRAN语言编写用户定义材料（UMAT）子例程，该子例程与ABAQUS接口连接。得到了桩皮摩擦曲线，与实际工程较为吻合。它进一步发展成为超长桩的普遍适用功能。考虑到超长桩重，可以通过一个新函数来计算深层软土区的沉降量和有效桩长。实例分析表明，超长桩轴向力分布的计算，桩顶沉降和有效桩长与桩身试验结果更加吻合。综上所述，本文提出的方法可以准确反映超长桩在实际工程中的工作特性，为超长桩的设计提供有价值的参考。 （c）2018年美国土木工程师学会。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号