五层1∶1灌芯玻璃纤维石膏墙板房屋模型动力特性测试及分析  

Dynamic property testing and analysis on a full-scale five-story concrete-filled glass fibre reinforced gypsum panel building model

作　　者：赵考重[1,2] 李雨恒 栗笑航 ZHAO Kaozhong;LI Yuheng;LI Xiaohang(College of Civil Engineering,Shandong Jianzhu University,Jinan 250101,China;Shandong Provincial Key Laboratory of Appraisal and Retrofitting in Building Structures,Jinan 250101,China)

机构地区：[1]山东建筑大学土木工程学院,山东济南250101 [2]山东省建筑结构鉴定加固与改造重点实验室,山东济南250101

出　　处：《四川建筑科学研究》2021年第4期34-38,共5页Sichuan Building Science

基　　金：住房和城乡建设部科技计划项目(05-K4-50)。

摘　　要：在玻璃纤维空心石膏板的空腔内浇灌混凝土形成的墙板称为灌芯玻璃纤维石膏墙板,试验证明灌芯玻璃纤维石膏墙板具有较好的受力性能,可作为房屋的承重墙,从而形成一种新型的结构体系。本文通过对1个5层1∶1灌芯玻璃纤维石膏墙板房屋模型的拟静力试验,研究了灌芯玻璃纤维石膏墙板房屋的抗震性能,对模型不同受力阶段的动力特性进行了测试,得到了结构开裂前及开裂后的频率、振型、阻尼动力特性。测试结果表明,在开裂后该结构体系墙板的受力机理发生了明显变化,结构的变形由弯曲型转化为了剪切型。在地震作用分析时,可将灌孔的石膏墙板简化为厚度为94 mm的混凝土剪力墙结构,经理论分析得到灌芯玻璃纤维石膏墙板房屋的周期,其基本周期也可按T=0.35n简化公式估算(n为楼层数)。The concrete-filled glass fiber reinforced gypsum panel is a kind of panel that the hollow cores inside the glass fiber gypsum panel are filled with concrete.The experiment showed that this kind of panel has good bearing capacity, and can be used as the load-bearing wall.Thus, a new type of structural system is formed based on this kind of glass fiber gypsum panel.This paper studied the seismic performance through the quasi-static experiment on a full-scale five-story concrete-filled glass fibre reinforced gypsum panel building model.The dynamic properties at different loading states were tested, and the frequencies, the vibration modes and the damping character were obtained before and after the structural cracking.The results show that the bearing mechanism of the wall has obvious change after the cracking, and the deformation of the structure will transfer from bending into shearing mode.The concrete-filled gypsum panel can be simplified as the concrete wall structure with the depth of 94 mm.The natural period of the concrete-filled glass fiber reinforced gypsum panel building can be obtained by the theoretical analysis, or it also can be approximately calculated using the simplified formula T=0.35n,with n is the number of the stories of the building.

关 键 词：灌芯石膏墙板 足尺模型 动力特性 测试 理论分析 

分 类 号：TU398.9[建筑科学—结构工程] TU364