黄土湿陷性对桥梁桩基承载力的影响  

Effect of collapsible loess on pile foundation bearing capacity

作　　者：冯忠居[1] 冯瑞玲[1] 赵占厂[1] 谢永利[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064

出　　处：《交通运输工程学报》2005年第3期60-63,共4页Journal of Traffic and Transportation Engineering

基　　金：国家西部交通建设科技项目(200131800017)

摘　　要：为了研究黄土湿陷性对桥梁桩基承载力的影响,基于弹性理论,建立了黄土湿陷性影响下桥梁桩基承载力的力学模型,推导了湿陷性黄土中桥梁桩基承载力的计算公式,利用编制的计算程序,分析了不同湿陷系数、不同湿陷厚度下黄土区域桩基承载力的变化性状。公式计算结果与现场实测结果对比分析表明,其相对误差最小为5.2%,最大为6.7%,表明本文公式具有较好的实用性。Based on elastic theory, a mechanics model of pile foundation bearing capacity was established, its calculating formula in collapsible loess was deduced, its changing characteristics for different collapsibility coefficients and different collapsibility thicknesses were analyzed. The comparison of calculation result and measuring result show that its minimum relative error is 5.2%, its maximum relative error is 6. 7%, which indicate the model is feasible, the formula is practical. 1 tab, 9 figs, 10 refs.

关 键 词：桥梁工程 湿陷性黄土 湿陷系数 桥梁桩基承栽力 弹性理论 

分 类 号：U443.1[建筑科学—桥梁与隧道工程]