竖向荷载作用下夯实水泥土楔形桩桩身峰值应力变化规律研究  

Research on the Variable Regularity of Rammed Soil-Cement Tapered Piles Peak Stress Under Vertical Loading

作　　者：王忍[1] 何杰[1] 高建喜[1] 熊猛[1] WANG Ren;HE Jie;GAO Jianxi;XIONG Meng(School of Civil Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China)

机构地区：[1]湖南工业大学土木工程学院,湖南株洲412007

出　　处：《湖南工业大学学报》2017年第2期33-37,共5页Journal of Hunan University of Technology

基　　金：湖南省自然科学基金资助项目(16JJ5007);湖南省研究生科研创新基金资助项目(CX2015B571)

摘　　要：运用数值模拟与试验验证相结合的方法,研究竖向荷载作用下夯实水泥土楔形桩桩身峰值应力变化的规律。研究结果表明,当楔形桩楔角相同时,桩身峰值应力所对应的深度基本为一个定值,且与竖向荷载大小关系较小,进而提出桩身峰值应力深度比的概念;桩身峰值应力深度比与楔形桩楔角的关系,在数值上可以近似用直线与抛物线分段拟合,且拟合程度较高。Based on numerical simulation and experimental verification,a research has been conducted on the variable regularity of rammed soil-cement tapered piles peak stress under vertical loading.Experimental results show that the depth corresponding to the pile peak stress is basically a fixed value,which has little to do with the vertical loading,for wedge piles with identical wedge angles.A concept of pile peak stress depth ratio has thus been proposed:the relationship between the depth radio of pile peak stress and wedge angles can be approximately fitting with that between straight lines and parabolic sections with a high degree of fitting.

关 键 词：楔形桩 桩身峰值应力 桩身峰值应力深度比 竖向荷载 

分 类 号：U473.1[机械工程—车辆工程]