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力学与实践 ›› 2004, Vol. 26 ›› Issue (5): 0-0.doi: 10.6052/1000-0992-2003-482

• 应用研究 •    

混凝土砌块墙体裂缝的力学机理探讨

刘文锋   

  1. 青岛理工大学土木工程学院 266033
  • 收稿日期:2003-12-01 修回日期:2004-03-09 出版日期:2004-10-10 发布日期:2004-10-10

MECHANISM ANALYSIS OF CRACK IN CONCRETE BLOCK WALL

  • Received:2003-12-01 Revised:2004-03-09 Online:2004-10-10 Published:2004-10-10

摘要: 从混凝土砌块墙体裂缝的工程调查出发,分析裂缝的成因和表现形式,指出温度裂 缝和干缩裂缝混凝土砌块墙体裂缝的两种主要形式. 根据实测的墙体温差,计算了 温度裂缝应力;根据Kelvin方程,阐述了干缩裂缝的机理,并估算了干缩裂缝应力, 解释了产生混凝土砌块墙体的裂缝原因.

关键词: 混凝土砌块墙体, 温度裂缝应力, 干缩裂缝的机理, 裂缝

Abstract: The crack in concrete block wall is a new problem for the new wall materials. At First, based on engineering investigations, causes and positions of cracks in concrete block wall are studied, and temperature crack and dry shrink crack are two main kinds of cracks. Secondly, the temperature crack stress is calculated by temperature difference in an existing building. Thirdly, the mechanism of dry shrink crack is expounded by Kelvin-equation and the dry shrink crack stress are also analyzed. In the end, causes of cracks in concrete block wall are explained.

Key words: crack of concrete block wall, temperature crack stress,