| 控制土基永久变形的设计指标研究 |
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| 引用本文： | 高启聚,;马霞,;孙兆云.控制土基永久变形的设计指标研究[J].中南公路工程,2014(6):152-154. |
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| 作者姓名： | 高启聚 ;马霞 ;孙兆云 |
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| 作者单位： | [1]苏州科技学院道路工程研究中心,江苏苏州215009; [2]山东省道路结构与材料重点试验室,山东济南250031 |
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| 基金项目： | 山东交通科技计划项目（2009Y017） |
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| 摘 要： | 以我国1978年柔性路面设计规范规定的路面结构破坏标准为基础，利用弹性层状体系计算程序计算了典型粒料基层沥青路面的土基顶面压应变和路表理论弯沉值，并利用弯沉值修正公式对理论弯沉值进行修正；在此基础上，首先建立了路表实际弯沉值与土基顶面压应变之间的回归公式，结合1978年柔性路面结构设计规范中的弯沉值控制模型，初步建立了控制土基永久变形的土基顶面压应变控制模型。
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| 关 键 词： | 道路工程 土基 永久变形 土基顶面压应变 粒料基层 沥青路面 |
Research on Design Index for Controlling Permanent Deformation of Subgrade |
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| Institution: | GAO Qiju , MA Xia, SUN Zhaoyun ( Road Engineering Research Center of Su Zhou University of Science and Technology, Suzhou, Jiang Su 215009, China; Shandong Provicail Key Laboratory of Road Structures and Materials, Jinan, Shandong 250031, China) |
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| Abstract: | Based on deterioration criterion established by design specifications for flexible pavement in 1978 and using calculation program suitable for elastic layered system, the compressive strain on top of subgrade and the theoretical value of the road surface defelction were calculated in typical felexible pavement structures with unbound granular base , and deflection value revision formula put forward in design specifications for flexible pavement in 1978 was used to transform road surface theoretical defelction values into road surface factual defelction values. Above the on , regression formula beween the compressive strain on top of subgrade and the road surface factual defelction values was created. Combined on the controlling model of defeletion adopted by design specifications for flexible pavement in 1978, the controlling model of compressive strain on top of subgrade was preliminarily set up to control permanent deformation of subgrade. |
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| Keywords: | Road engineering subgrade permanent deformation compressive strain on top of subgrade unbound granular base asphalt pavement |
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