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| 沈大高速公路改扩建工程路基加宽容许工后不均匀沉降指标研究 | |
| 引用本文： | 聂鹏,曲向进,刘奉侨,丛林,郭忠印. 沈大高速公路改扩建工程路基加宽容许工后不均匀沉降指标研究[J]. 公路交通科技, 2005, 22(11): 18-20,53 |
| 作者姓名： | 聂鹏 曲向进 刘奉侨 丛林 郭忠印 |
| 作者单位： | 1. 哈尔滨工业大学交通科学与工程学院,黑龙江,哈尔滨,150090;辽宁省交通厅,辽宁,沈阳,110003 2. 辽宁省交通勘测设计院,辽宁,沈阳,110005 3. 同济大学道路与交通教育部重点实验室,上海,200092 |
| 摘 要： | 路基加宽工程中新老路基不均匀沉降会使路面结构受力状态发生显著变化,文章采用三维有限元方法,将新老路基不均匀沉降转换为结构层底脱空,进行多种不同脱空深度的路面结构力学分析。分析认为沈大高速公路路基加宽容许工后不均匀沉降差应在1.6cm以内,不均匀沉降坡比不大于0.4%时,沥青路面不产生结构性破坏。 |
| 关 键 词： | 道路工程 路基加宽 容许不均匀沉降 基层拉应力 |
| 文章编号： | 1002-0268（2005）11-0018-03 |
| 收稿时间： | 2005-03-09 |
| 修稿时间： | 2005-03-09 |
Allowable Differential Settlement for Widened Roadbed in Shen-Da Expressway Reconstruction |
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| NIE Peng,QU Xiang-jin,HU Feng-qiao,CONG Lin,GUO Zhong-yin. Allowable Differential Settlement for Widened Roadbed in Shen-Da Expressway Reconstruction[J]. Journal of Highway and Transportation Research and Development, 2005, 22(11): 18-20,53 | |
| Authors: | NIE Peng QU Xiang-jin HU Feng-qiao CONG Lin GUO Zhong-yin |
| Abstract: | The differential settlement for widened roadbed can induce the change of stress field in pavement structure.Using three dimensional FEM,this paper analyzed the effect of differential settlements on pavement structure considering the cavity under the base layer caused by the settlement.For Shen-Da expressway reconstruction,to avoid pavement structure failure,the allowable differential settlement should be 1.6cm and the its gradient be 0.4%. |
| Keywords: | Road engineering Roadbed widening Allowable differential settlement Tensile stress on the base layer |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |