钢丝网砂浆加固背栓式石材面板的抗弯性能研究  

Flexural behavior of undercut anchorage stone panel reinforced with ferro-cement mortar

作　　者：王作虎 周清鑫 李罗伟 姚渊 Wang Zuohu;Zhou Qingxin;Li Luowei;Yao Yuan(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044

出　　处：《建筑科学》2023年第3期8-14,共7页Building Science

基　　金：国家“十三五”重点研发计划项(2017YFC0806100)。

摘　　要：为了研究钢丝网砂浆加固背栓式石材幕墙面板的抗弯性能,对7组42块尺寸相同的石材面板分别进行迎风面和背风面的弯曲破坏试验,分析砂浆种类、砂浆厚度和界面类型等参数对背栓式石材面板抗弯性能的影响。结果表明:增加砂浆厚度可以提高石材面板背风面抗弯承载力,但是对试件迎风面抗弯承载力的提高效果不明显;相同条件下钢丝网高性能砂浆的加固效果优于钢丝网普通砂浆;不同的界面处理方法对于石材面板在正、负风荷载作用下的破坏形态的影响不明显;使用换算截面法较好地计算出钢丝网砂浆加固石材面板的抗弯承载力。To investigate the flexural performance of undercut anchorage panel reinforced with ferro-cement mortar,seven groups of 42 stone panels of the same size are designed,and the bending destruction experiment of the windward and leeward surfaces are conducted respectively.The test parameters mainly include the mortar type,mortar thickness and interface treatment method.The results show that increasing the thickness of the mortar can improve the flexural bearing capacity of the leeward side of the specimens,but it has no obvious effect on the flexural bearing capacity of the windward side of the specimen.Under the same conditions,the strength of the panel reinforced with high-performance mortar is higher than that of the panel reinforced with ordinary mortar.Different interface treatment methods do not have much impact on the failure pattern of the stone panel under positive and negative wind loads.When calculating the flexural bearing capacity of mortar-reinforced stone panels,the conversion section method can be applied to obtain more accurate results.

关 键 词：钢丝网砂浆 背栓式 石材面板 抗弯性能 承载力 

分 类 号：TU363[建筑科学—结构工程]