两层双开间既有石砌体结构振动台试验  

Shaking table test of existing stone masonry structure with two floors and two compartments

作　　者：方霄鹏 陈善权 金捷 林庆胜 黄协成 吴应雄[6] FANG Xiaopeng;CHEN Shanquan;JIN Jie;LIN Qingsheng;HUANG Xiecheng;WU Yingxiong(Zhicheng College,Fuzhou University,Fuzhou 350100,China;Quanzhou Urban Construction Group Co.,Ltd.,Quanzhou 362000,China;Fujian Construction Engineering Technology Center,Fuzhou 350100,China;Fujian Construction Engineering Group Co.,Ltd.,Fuzhou 350100,China;Quanzhou Construction Engineering Group Co.,Ltd.,Quanzhou 362000,China;School of Civil Engineering,Fuzhou University,Fuzhou 350108,China)

机构地区：[1]福州大学至诚学院,福建福州350100 [2]泉州城建集团有限公司,福建泉州362000 [3]福建省建筑工程技术中心,福建福州350100 [4]福建建工集团有限责任公司,福建福州350100 [5]泉州建工集团有限公司,福建泉州362000 [6]福州大学土木工程学院,福建福州350108

出　　处：《南昌大学学报（工科版）》2024年第4期420-428,共9页Journal of Nanchang University(Engineering & Technology)

基　　金：西南科技大学博士基金项目(23ZX7162);福建省建设科技研究开发项目(2022-K-279、2023-K-47)。

摘　　要：为探究福建省闽南沿海地区既有石砌体房屋的抗震性能,对一个1/2缩尺的典型两层双开间石砌体结构模型进行振动台试验,分析模型在地震作用下的破坏形态、结构动力特性以及动力响应的变化规律。结果表明:在双向输入地震动作用下,模型墙体的裂缝呈阶梯形发展;墙体转角处扭转现象明显;门窗洞口周边破坏较为严重,是结构薄弱处。随着输入地震峰值加速度(PGA)的增加,模型的自振频率减小且具有阻尼比增大的趋势。当PGA=25 Gal时,模型完好;PGA=50 Gal时,模型达到中等破坏程度;PGA=75 Gal时,模型破坏且突然,最大层间位移角为1/162,达到严重破坏程度。研究表明闽南沿海地区既有石砌体房屋抗震性能差。In order to investigate the seismic performance of existing masonry buildings in the coastal area of southern Fujian province,shaking table test was carried out on a 1/2 scale typical two-story double-bay masonry structure model to analyze the failure forms,structural dynamic characteristics and dynamic response of the model under earthquake action.The results showed that the cracks of the model wall developed in step shape under the action of bi-directional input ground motion.The corner torsion of the wall was obvious.The damage around the door and window openings was more serious,and the structure was weak.With the increase of the peak value of the input seismic acceleration,the natural frequency of the model decreased and the damping ratio increased.When PGA=25 Gal,the model was intact.When PGA=50 Gal,the model had a moderate damage degree.When PGA=75 Gal,the model failed suddenly,and the maximum interlayer displacement angle was 1/162,reaching the degree of serious failure.The research showed that the seismic performance of existing masonry houses in the coastal area of southern Fujian was poor.

关 键 词：既有结构 石砌体结构 振动台试验 抗震性能 

分 类 号：TU363[建筑科学—结构工程]