钢筋混凝土墙板加固石砌体结构抗震性能研究  

Seismic Performance of Stone Masonry Structures Reinforced with RC Wallboard

作　　者：林婷婷 叶林伟 杨相如[1,2] LIN Tinging;YE Linwei;YANG Xiangru(Fujian shipping and Transportation Vocational College,Fuzhou,Fujian 350007,China;Fujian Shipping and Transportation Management Co.,Ltd.,Fuzhou,Fujian 350007,China)

机构地区：[1]福建船政交通职业学院,福建福州350007 [2]福建船政交通经营管理有限责任公司,福建福州350007

出　　处：《水利与建筑工程学报》2022年第6期188-194,共7页Journal of Water Resources and Architectural Engineering

基　　金：2022年校级科教发展基金项目(20220202);平潭石头厝传统村落专项课题研究。

摘　　要：由于不规范的建造方式和海洋气候的影响,平潭岛上现存大量存在较大抗震安全隐患的石头厝。为提升该地区受损石砌墙体的抗震性能,基于钢筋混凝土墙板的加固方式,通过建立18个石砌墙体的有限元模型,分析了混凝土板厚度、配筋率、混凝土强度、竖向压力等因素对石砌墙体极限承载力、刚度退化和位移延性的影响。结果显示:钢筋混凝土板墙可有效改善石砌体墙的抗震性能。在一定范围内增加混凝土厚度可提高承载力,但过厚则会降低延性。适当增加配筋率能有效提高构件延性。随着混凝土强度提高,构件极限承载力略有下降且脆性越明显,设计时不建议采用高强度混凝土。对于竖向压力越大的石砌体墙,钢筋混凝土板加固后承载能力提高更明显,但相应的延性会有所降低。Major seismic safety hazards exist in a large number of Pingtan stone houses, due to the impacts of non-standard construction methods and marine climate. In order to improve seismic performance of the damaged masonry walls in this area, 18 finite element models of masonry walls(based on reinforcement method of reinforced concrete wallboards) were established. The influences of concrete slab thickness, reinforcement ratio, concrete strength and vertical pressure on the ultimate bearing capacity, stiffness degradation and displacement ductility of masonry walls are analyzed. The results show that the seismic performance of stone masonry wall can be effectively improved by reinforced concrete wallboards. The bearing capacity of members can be improved by increasing the concrete thickness within a certain range, but its ductility will be reduced by excessive thickness. The ductility of members can be effectively improved by properly increasing the reinforcement ratio. High-strength concrete is not recommended in design because the ultimate bearing capacity of the members decrease slightly and the brittleness becomes more obvious with the increase of concrete strength. Lastly, for stone masonry walls with higher vertical pressure, the bearing capacity of reinforced concrete slabs will increase more significantly, but its ductility will be reduced.

关 键 词：石砌体 抗震加固 抗震性能 有限元 

分 类 号：TU363[建筑科学—结构工程]