- 摘 要
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(1 北京工業(yè)大學(xué)建筑與城市規(guī)劃學(xué)院,北京 100124;2 北京工業(yè)大學(xué)城市建設(shè)學(xué)部,北京 100124;3 浙江大學(xué)環(huán)境與資源學(xué)院,杭州 310058)
摘要: 花板代拱是河西走廊地區(qū)一種特殊的木結(jié)構(gòu)構(gòu)造,對于建筑物的抗震性能有著重要的影響.基于河西地區(qū)的古代木結(jié)構(gòu),采用西北地區(qū)常用松木制作了兩聯(lián)花板代拱足尺模型,通過擬靜力試驗得到了對應(yīng)的荷載-位移滯回曲線,提取了骨架曲線和剛度變化曲線,分析了花板代拱的受力變形特點和其破壞形式.結(jié)果表明,花板代拱受力時摩擦滑移與剪切作用并存,滯回曲線大致呈梭形,滯回環(huán)較為飽滿,具備良好的抗震性能和耗能能力;破壞形式為延性破壞,主要分為兩個階段:第一階段為正心枋兩端的暗榫破壞,此后結(jié)構(gòu)仍能保持相當?shù)某休d能力,且由于摩擦滑移的顯著,結(jié)構(gòu)耗能能力增強;第二階段為破間兩端暗榫破卯而出,此時結(jié)構(gòu)僅在卯未破壞側(cè)有承載力,另一側(cè)承載力急劇減少為零,破壞前破間處卯的外表面有明顯裂痕,征兆明顯.
關(guān)鍵詞: 木結(jié)構(gòu);花板代拱;抗震性能;破壞形式;受力變形特點;骨架曲線;滯回曲線
中圖分類號:TU366.2 文獻標志碼:A 文章編號:1002-848X(2022)18-0133-05
DOI:10.19701 / j.jzjg.20201404
Experimental study on horizontal seismic performance of two flower plate archs
LI Jiang1,LI Zhihao2,ZHAO Yifeng3,SUN Guojun2
(1 College of Architecture and Urban Planning,Beijing University of Technology,Beijing 100124,China;2 Faculty of Architecture,Civil and Transportation Engineering,Beijing University of Technology,Beijing 100124,China;3 College of Environmental & Resources Science,Zhejiang University,Hangzhou 310058,China)
Abstract: Flower plate arch is a special wooden structure in Hexi corridor area,which has an important influence on theseismic performance of buildings. Based on the ancient wooden structure in Hexi area,the two flower plate archs foot scalemodel was made by using the common pine wood in northwest China,and the corresponding load-displacement hysteresiscurve was obtained through the quasi-static test,the skeleton curve and the stiffness change curve were extracted,and thestress and deformation characteristics and the failure form of the flower plate arch were analyzed. The results shows that thefriction slip and shearing effect coexist when the flower plate arch is forced,the hysteresis curve is roughly shuttle-shaped,the hysteresis ring is full,the flower plate arch has good seismic performance and energy consumption ability. The failureform is ductile failure,which is mainly divided into two stages. The first stage is the failure of the mortise at both ends ofthe Zhengxin Fang ,after which the structure can still maintain a considerable carrying capacity,and due to the significantfriction slip,the structure energy consumption capacity is enhanced. The second stage is when the mortise and tenon atboth ends of the mortise are broken out. At this time,the structure only has the bearing capacity on the undamaged side ofthe mortise,and the bearing capacity on the other side is sharply reduced to zero. And there are obvious cracks in the outersurface of the front break before the destruction,with obvious signs.
Keywords:wood structure;flower plate arch;seismic performance;failure form;stress and deformation characteristic;skeleton curve;hysteresis curve
∗國家自然科學(xué)基金項目(51408011),北京市教委科技一般項目(KM201710005018).
第一作者:李江,博士,副教授,主要從事中國傳統(tǒng)建筑營造做法、歷史建筑展示技術(shù)手段、建筑遺產(chǎn)保護策略方法方向的研究,Email:23001480@ qq. com.
[引用本文] 李江,李智豪,趙益峰,等. 兩聯(lián)花板代拱水平抗震性能試驗研究[ J]. 建筑結(jié)構(gòu),2022,52(18):133-137. LI Jiang,LI Zhihao,ZHAO Yifeng,et al. Experimental study on horizontal seismic performance of two flower platearchs[J]. Building Structure,2022,52(18):133-137.
