Masonry load bearing walls subject to combined axial load and out-of-plane bending

承受轴向荷载和面外弯曲联合作用的砖石承重墙

• 批准号: 261813-2008
• 负责人: Liu, Yi
• 金额: $ 1.38万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=480020
• 关键词: Masonry; load; bearing; walls; subject

As the most commonly used masonry structural components, masonry load bearing walls are frequently subjected to the action of concentric or eccentric gravity loads in combination with lateral loads due to wind or earthquake. The apparent strength of these members is compromised by a secondary moment caused by the gravity load acting through a deflected shape. Due to the low tensile strength of masonry, this situation is further complicated by tension cracking which leads to variations of effective sectional properties over the member height. The reduction in the load carrying capacity of walls due to secondary effects can be significant and the design of these members has to include the secondary moment effects in a rational way.

砌体承重墙作为最常用的砌体结构构件，经常受到风荷载或地震作用下的水平荷载和同心或偏心重力荷载的共同作用。这些构件的表观强度受到重力载荷通过变形作用而产生的次弯矩的影响。由于砌体的抗拉强度较低，这种情况进一步复杂的拉伸开裂，导致有效的截面性能的变化超过成员的高度。由于二次效应，墙的承载能力会显著降低，这些构件的设计必须以合理的方式包括二次弯矩效应。