- 摘 要
-
（1 中國建筑標(biāo)準(zhǔn)設(shè)計研究院有限公司， 北京 100048； 2 西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055）
［摘要］對4個1∶2縮尺、采用外環(huán)板-端板形式的裝配式交錯桁架上弦-方鋼管混凝土柱節(jié)點試件的靜力性能進行了試驗研究，包括節(jié)點的破壞模式、承載力、剛度、延性和應(yīng)變反應(yīng)。試驗結(jié)果表明，水平單調(diào)荷載作用下，節(jié)點的豎板、節(jié)點板、外環(huán)板和柱壁相繼屈服進入塑性；各節(jié)點試件在破壞前，其承載力均未出現(xiàn)下降，說明該上弦節(jié)點具有良好的承載力和安全儲備；節(jié)點的外環(huán)板厚度越大，其彈性剛度越大，且承載力越高；節(jié)點偏心距越大，其延性系越好。
［關(guān)鍵詞］裝配式交錯桁架； 連接節(jié)點； 靜力性能； 試驗研究； 破壞模式
中圖分類號：TU398-7文獻標(biāo)識碼：A文章編號：1002-848X(2018)07-0033-06
Experimental study on static performance of connected joints of top chord of fabricated staggered truss with column
Sun Yanwen1, Hu Lingsong2, Lian Ming2, Su Mingzhou2
(1 China Institute of Building Standard Design & Research Co.， Ltd., Beijing 100048, China; 2 School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China)
Abstract:The experimental study was conducted on the static performance of four 1∶2 scaled joint specimens of top chord of fabricated staggered truss (composed of the external ring plate and end plate type) with square tubular steel reinforced concrete column. The failure mode, bearing capacity, stiffness, ductility and strain response of joints were studied. Experimental results show that under the effect of horizontal monotonous loads, vertical plate, joint plate, external ring plate and the column wall of the joints yield into plasticity successively; the bearing capacity of each joint specimen is not decreased before failure, showing that the top chord joint has good bearing capacity and safety reserve; the greater the thickness of the external ring plate of the joint is, the greater the elastic stiffness is and the higher the bearing capacity is; the greater the eccentricity of the joint is, the better the ductility of the joint is.
Keywords:fabricated staggered truss; connected joint; static performance; experimental study; failure mode
*國家重點研發(fā)計劃（2016YFC0701503）。
作者簡介：孫艷文，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，Email：22979977@qq.com。
