土工基础

›› 2013, Vol. 27 ›› Issue (6): 59-61.

• 工程实录 • 上一篇    下一篇

基于SMP强度准则的预应力混凝土管桩的挤土效应分析

唐为峰1，王 春1，李本贵1，王 干1，万 征2   

  1. (1.东营市勘察测绘院,山东东营 257091;2.中国建筑科学研究院,北京 100013)
  • 收稿日期:2013-01-21 出版日期:2013-12-20 发布日期:2013-12-21
  • 作者简介:唐为峰（1971-），男，东营市勘察测绘院院长，高级工程师，研究方向为岩土工程勘察、设计与施工。

Soil Densification Effects of Pre-stressed Concrete Pipe Piles Based on the SMP Failure Criterion

TANG Weifeng1, WANG Chun2, LI Bengui, WANG Gan1， WAN Zheng2   

  1. (1.Dongying Investigation and Survey Institute Co., Ltd., Dongying Shandong 257091;2.China Academy of Building Research, Beijing 100013)
  • Received:2013-01-21 Online:2013-12-20 Published:2013-12-21

摘要： 预应力混凝土管桩在沉桩过程中，将发生挤土效应和土塞效应，二者是有机统一的。基于SMP强度准则，考虑土塞效应，分析了预应力混凝土管桩的挤土效应及土塞效应，并推导了预应力混凝土管桩的应力场及位移场的计算公式。通过实例表明，基于考虑中间主应力的SMP强度准则推导得到的预应力混凝土管桩的应力状态及位移场的计算公式，在实际工程中具有一定的现实指导意义。

关键词: 预应力混凝土管桩, SMP强度准则, 挤土效应, 土塞效应

Abstract: During the driving process of a prestressed reinforced concrete pipe pile, the soil densification and plugging effects are also induced. Both the soil densification and the plugging effects are analyzed based on the Spatially Mobilized Plane (SMP) failure criterion. The stress and displacement of the prestressed reinforced concrete pipe pile are presented in the paper.

Key words: Pre-stressed Reinforced Concrete Pipe Piles, SMP Failure Criterion, Soil Densification Effect, Soil Plugging Effect