砌体墙板的平面外性能

Out-of-Plane Mechanical Properties of Masonry Wall with Homogenization

基于三维匀质化方法,建立了砌体墙板的三维匀质化基本单元,将匀质化后的砌体墙看成四边有支撑的竖向平板,提出了运用板理论来研究砌体墙板的平面外力学性能的方法,且分别给出了薄板理论和中厚板理论下砌体墙板的匀质化模型,推导了在对应模型下的匀质化砌体墙板的跨中挠度计算公式,对120、180、240和370mm厚的砌体墙在固定高宽比和变化高宽比下的跨中挠度进行了详细的对比分析,得出了2种理论对不同尺寸的匀质化砌体墙板的适用性。该方法具有一定的实用价值,完善了砌体分析理论。

Based on the three-dimensional homogenization theory, the Characteristic 3D elementary pattern in the masonry was established. The homogenized masonry wall was considered as a vertical plate with four supports. The plate theory was used to research the out-of-plane mechanical properties of masonry panels. Homogenization models with theory of thin plates and theory of medium and heavy plates were given and the calculation formula of deflection of homogenization masonry wall were deduced as well. The mid span deflections of 120 ram, 180 mm, 240 mm and 370 mm masonry walls with both fixed and variable ratio of height to width were analyzed. The applicability of two kinds of plate theories on homogenization masonry walls of different sizes was obtained. This methodology was practical and the masonry theory was improved.