摘要
对静压桩沉桩过程的挤土效应机理研究和分析,并阐述其对工程桩的危害。分别探讨静压桩沉桩分析的圆孔扩张理论、应变路径法、有限元分析、滑移线理论和模型槽试验等5种方法,对5种方法逐个进行分析评述。利用改进的圆孔扩张理论得出沉桩过程中土体位移、应力、初始超孔压的空间解析解,在工程实例中运用本理论,采取有效的保护措施,通过观测手段验证了研究结果,实现了原址保护。
Study and Analysis on the mechanism of squeezing effect in the process of pile sinking,and the harm of the pile in engineering。The five methods,such as circular cavity expansion theory,strain path method,finite element analysis,slip line theory and model trough test,are discussed respectively。The improvement of cavity expansion theory that sink in the process of pile soil displacement,force,initial excess pore water pressure of space analytic solution,this theory are used in the engineering example,take effective protective measures,the research is verified by means of observation,realizes the site protection.
出处
《工程建设与设计》
2016年第S1期101-103,共3页
Construction & Design for Engineering
关键词
静压桩
挤土效应
圆孔扩张理论
原址保护
static pressure pile
soil squeezing effect
circular cavity expansion theory
site protection
