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: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=547895
• 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.

作为最常用的砌体结构成分，砌体负载轴承壁经常受到同心或偏心重力负荷的作用，并由风或地震引起的侧向负荷。这些成员的明显强度因通过偏转形状作用的重力负荷引起的次级力矩而损害。由于砌体的拉伸强度较低，这种情况因张力破裂而变得更加复杂，从而导致在成员高度上的有效分段特性的变化。由于次级效应而导致的壁负载能力的降低可能很重要，并且这些成员的设计必须以合理的方式包括次级力矩效应。