预应力锚索抗滑桩的动态设计法
Dynamic Design Method for Friction Pile with Prestressed Cable
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摘要: 提出了预应力锚索抗滑桩的动态设计概念,即跟踪锚索桩的实际工作状况。分析桩和锚索在各种受荷 条件下的内力,再进行优化组合,以其中的最大内力为依据进行桩结构设计和锚索承载力设计。对锚索预应力 值的确定问题进行了探讨。算例分析表明,本文中的设计方法能反映桩的最危险状态,使锚索和桩留有合理的 安全储备,对锚索桩长期正常工作有利。Abstract: A concept of dynamic design method for friction pile with prestressed cable is put forward. First, the internal forces of the pile and cable are calculated according to the pile s working conditions. Then, the greatest internal forces obtained are taken as criteria to design the pile s structure and the cable s bearing capacity. A discussion on how to determine the prestressed force value is also made. The results of a computing example show that the dynamic design method can reflect the most dangerous state of a pile, thus the friction pile and cable can retain reasonable safety margins, favorable for the cable and pile to work for a long time.
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Key words:
- prestresses /
- cable /
- bearing capacity /
- friction pile /
- dynamic design method
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