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钢筋网聚合物砂浆加固古建筑石板试验研究
王亨1,齐文2,邱实2,谢剑2,徐福泉3
摘 要
(1 天津大学建筑设计研究院, 天津 300072; 2  天津大学建筑工程学院, 天津 300072;3 中国建筑科学研究院, 北京 100013)
 
[摘要]为了寻找适合古建筑石板的加固方法,进行了三个原型石板试验和三个不采用锚固措施的钢筋网聚合物砂浆加固石板试验,重点研究石板的受弯破坏形态、沿截面高度的应变分布规律、荷载-挠度曲线和承载力。试验结果表明:加固后石板的受弯破坏形态体现出一定延性特征,其受弯承载力有提高但仍存在一定离散性;石板断裂破坏前,纯弯段截面应变沿高度方向的分布符合平截面假定。在试验分析的基础上,提出了加固后石板的开裂承载力和破坏承载力计算公式。
[关键词]古建筑; 石板; 钢筋网聚合物砂浆加固; 受弯承载力
中图分类号:TU521.2      文献标识码:A      文章编号:1002-848X(2015)09-0068-05
 
Experimental study on historic building stone slabs strengthened by steel reinforcement mesh and polymer mortar
Wang Heng1, Qi Wen2, Qiu Shi2, Xie Jian2, Xu Fuquan3
(1 Architectural Design and Research Institute of Tianjin University, Tianjin 300072, China; 2 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 3 China Academy of Building Research, Beijing 100013, China)
 
Abstract:In order to find appropriate strengthening methods for stone slabs in historic buildings, experiments were carried out on 3 prototype slabs and 3 specimens strengthened by steel reinforcement mesh and polymer mortar without anchorage. The research was mainly on the bending failure pattern, strain distribution law along the cross-section height, load-deflection curve and bearing capacity. Experimental results show that the bending failure pattern of the strengthening stone slab is ductile failure and there is discrete in the development of flexural bearing capacity. Before the stone slab is damaged, the strain distribution of pure bending section along the beam height meets the plane section assumption. Based on the experimental analyses, the load bearing capacity formulas of the strengthening stone slabs were proposed in both cracking and failure situations.
Keywords: historic building; stone slab; steel reinforcement mesh and polymer mortar strengthening; flexural bearing capacity
 
作者简介:王亨,硕士,高级工程师,Email: whtju@163.com。
 
参考文献
[1]魏璟璐.中国传统建筑营造技术中石质材料的应用探析——以山西为例[D].太原:太原理工大学,2009.
[2]张文明.砖石古塔的抗震性能评估及地震破坏机理研究[D].西安:西安建筑科技大学,2008.
[3]龚晓进.石拱桥病害分析及维修加固方法研究[D].成都:西南交通大学,2007.
[4]杨庆印.石拱桥静荷载试验评估和加固研究[D].合肥:合肥工业大学,2009.
[5]李秋萍.古桥结构体系及石拱桥的分析、监测评估与保护[D].杭州:浙江大学,2011.
[6]葛静.石砌体结构抗震性能与加固技术研究[D].兰州:兰州理工大学,2010.
[7]刘小娟,郭子雄,胡奕东,等.聚合物砂浆嵌缝加固石墙灰缝抗剪性能研究[J].地震工程与工程振动,2010,30(6):106-111.
[8]施养杭,余建星.采用新型灌浆材料的石墙抗震性能研究[J].地震工程与工程振动,2004,24(1):105-110.
[9]ROGRIO BAIRRO, FALCO SILVA M J. Shaking table tests of two different reinforcement techniques using polymeric grids on an asymmetric limestone full-scaled structure[J]. Engineering Structure, 2009 (31):1321-1330.
[10]曹书文,赵东,陈平. CFRP加固石梁的试验研究[J].建筑结构,2010,40(5):53-54.
[11]张兴虎,蔺宝钢,焦海洲,等.预应力大跨度石梁构件的抗弯试验研究[J].西安建筑科技大学学报:自然科学版,2011,43(2):172-177.
[12]张楠.底部钢筋网改性砂浆层加固石楼板抗弯性能试验研究[D].泉州:华侨大学,2011.
[13]KURTIS K E, DHARAN C K H. Composite fibers for external reinforcement of natural stone[J]. Journal of Composites for Construction, 1997(1):116-119.
[14]GB/T 50152—2012 混凝土结构试验方法标准[S].北京:中国建筑工业出版社,2012.
[15]齐文,徐福泉,谢剑,等.古建筑青白石梁受弯性能试验研究[J].建筑科学,2014,30(11):40-43.
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