广东工业大学学报 ›› 2007, Vol. 24 ›› Issue (1): 61-65.

• 综合研究 • 上一篇    下一篇

混凝土桥面铺装层的多重断裂分析

  

  1. 华南理工大学建筑学院; 华南理工大学交通学院 广东广州510640; 广东广州510640;
  • 出版日期:2007-02-01 发布日期:2007-02-01
  • 基金资助:

    国家自然科学基金(10372032);广东省自然科学基金(031394)

Analysis of Multiple Cracking of Concrete Bridge Overlays

  1. (1.College of Architecture and Civil Engineering;2.College of Traffic and Communications,South China University of Technology,Guangzhou 510640,China)
  • Online:2007-02-01 Published:2007-02-01

摘要: 借鉴复合材料力学的分析方法,对桥面板和桥面铺装层组合体系建立一种分层剪滞分析模型,研究了混凝土公路桥中组合体截面受负弯矩作用下铺装层的多重断裂问题,求出了普通混凝土和钢纤维增强混凝土铺装层的裂纹间距或裂纹密度,所得结果与某工程实例中普通混凝土桥面铺装层的破坏状况较吻合.计算结果表明,裂纹密度与远场施加荷载有关,施加荷载愈大,裂纹密度愈大,当施加荷载达到或超过某值时,铺装层会出现等间距的饱和裂纹群. 更多还原

关键词: 混凝土; 钢纤维增强混凝土; 桥面铺装; 多重断裂; 裂纹密度; 剪滞分析;

Abstract: Using the analytical methods of composite mechanics for reference,a layering shear-lag model is established for the system composed of bridge deck ply and overlay.The multiple cracking problem of concrete bridge overlays for concrete highway bridges under minus moment is studied.Then the crack spacing or density of both conventional and steel fiber-reinforced concrete bridge overlays has been calculated.The results obtained are in a relatively good agreement with the failure situation for an eng...

Key words: concrete; steel fiber-reinforced concrete; bridge overlay; multiple cracking; crack density; shear-lag analysis;

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[2] 徐伟,白海涛,张肖宁.  大跨径混凝土斜拉桥桥面铺装力学数值模拟分析[J]. 哈尔滨工业大学学报. 2003(06)

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[4] 王虎,胡长顺,王秉纲.  简支梁桥梁端处桥面连续铺装层结构计算分析[J]. 西安公路交通大学学报. 2000(04)

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