黄土暗穴区域公路桥梁桩基竖向承载特性研究  

Research progress of vertical bearing capacity of pile foundation of highway bridge in the area of loess

作　　者：段俊峰 郭瑞[2] 洪刚 

机构地区：[1]深圳市公园管理中心,广东深圳510027 [2]陕西理工大学土木工程与建筑学院,陕西汉中723001 [3]云南建投第四建设有限公司,云南昆明650023

出　　处：《山西建筑》2017年第27期130-132,共3页Shanxi Architecture

基　　金：陕西理工大学校人才启动项目(SLGOD16-11)

摘　　要：结合某地区工程实例,分析了黄土暗穴的塌陷机理及其对公路桥梁桩基的危害模式,总结了近年来国内外对黄土地区桩基竖向承载特性问题的理论分析、静载试验、原位试验、模型试验及数值计算等方面的研究现状。基于上述结果,指出了黄土暗穴区域公路桥梁桩基竖向承载特性研究中亟待解决的一些关键问题,介绍了一种能够有效提高黄土暗穴区域公路桥梁桩基竖向承载力的桩基形式——树根桩基础。Combined with a project example in Xi＇an area,the collapse mechanism and harm mode to the pile foundation of highway bridge on the loess hidden hole were analyed in this paper. The worldwide research progress in the theoretical calculation methods,field tests,model tests and numerical simulation of vertical bearing capacity of pile foundation in the area of loess were summarized. Based on the above results,The main problems on vertical bearing capacity of pile foundation in the area of loess researches are put forward. The root piles is introduced,which can effectively improve the vertical bearing capacity of pile foundations,in the area of loess.

关 键 词：桥梁工程 公路桥梁桩基 竖向承载特性 树根桩基础 黄土暗穴 

分 类 号：U445.551[建筑科学—桥梁与隧道工程]