均布荷载作用下复合墙板的简化计算方法

为了研究混凝土灌芯玻璃纤维增强石膏墙板(简称复合墙板)在水平均布荷载作用下的内力发展过程和受力体系的演变过程,根据复合墙板的组成特点,建立了简化计算模型。因框架与石膏墙板从开始受力、开裂、塑性变形到达极限承载力的过程,实质上是石膏板与混凝土框架的刚度不断衰减的过程;在这个过程中二者的变形是协调的,可以确定各阶段框架、石膏板的刚度,给出了复合墙板在水平均布荷载作用下的各种受力破坏途径、内力计算的简化公式及计算流程图。最后对理论计算与实验结果进行了对比分析,结果表明:提出的计算公式与实验结果吻合较好。

Simplified calculation method under uniform distributed load for composite wall panels

In order to study internal force development and force system evolution process of concrete filled glass fiber reinforced gypsum wall panels(composite board for short) under horizontal distributed load,the simplified calculation model was set up on the basis of the feature of the composite wall panels. At first the frame and plasterboard wall started to bear the force and then cracked, which would have the plastic deformation, and could reach the ultimate bearing capacity. This was actually a process that stiffness of frame and plasterboard attenuated respectively. Their distortion was unisonous. The stiffness of the frame and plasterboard in different stage was defined. The route of distortion, internal force simplified calculation method and flow chart were also given. Finally, the theoretical and experimental results were also analyzed by comparison. All the calculated results proved that the calculation method coincided well with the experimental results.