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黄土冲沟斜坡桥梁桩基竖向承载特性模型试验研究
Authors
冯忠居[1]
张旭[5]
+4 more
王航[2]
贾彦武[4]
高璇[3]
魏进[1]
Publication date
15 December 2015
Publisher
Abstract
为了探明黄土冲沟地形条件对桥梁桩基础承载力的影响,首次基于自主研发的能充分反映黄土冲沟区域桩基础特点与工作性能的模型试验平台,分析不同冲沟坡度、不同桩长桩基的竖向承载力,桩身轴力及桩侧摩阻力的变化规律,并结合试验结果提出相关的工程技术建议。研究结果表明:①随着坡度的增大,相同桩长的桩基承载力呈降低趋势,承载力影响度逐渐增大,变化范围在7%~35%之间;②在一定范围内,桩基承载力随桩长增加增幅越大,桩长增加到一定程度时,承载力增幅逐渐变缓;③随着坡度增加,相同入土深度下的有效桩长逐渐减小;④黄土冲沟斜坡区域桥梁桩基设计应充分考虑防止桩周土体流失的工程技术
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Last time updated on 07/01/2019