- 摘 要
-
(1 江蘇科技大學土木工程與建筑學院， 鎮(zhèn)江 212003； 2 上海建筑設(shè)計研究院有限公司， 上海 200041; 3 嘉興職業(yè)技術(shù)學院， 嘉興 314036）
［摘要］為研究不同索撐節(jié)點對張弦梁受力性能的影響，設(shè)計了連續(xù)式索撐節(jié)點和間斷連續(xù)式索撐節(jié)點兩榀模型。通過對兩榀模型在預應力、跨中集中荷載及不對稱集中荷載三種工況下進行靜力試驗，從索力損失、拉索伸長量等方面進行分析。結(jié)果表明：兩種模型的索力損失相比于索力為小量，且索力均隨著外部荷載的增加而線性增加，兩種模型的索力大小差不多；跨中集中荷載作用下，間斷連續(xù)式索撐節(jié)點張弦梁兩側(cè)的索力差幾乎不變，而連續(xù)式索撐節(jié)點張弦梁兩側(cè)的索力差隨外荷載增加而增大；不對稱集中荷載作用下，連續(xù)式索撐節(jié)點張弦梁兩側(cè)的索力差幾乎不變，而間斷連續(xù)式索撐節(jié)點張弦梁兩側(cè)的索力差隨荷載增加而增大。
［關(guān)鍵詞］預應力鋼結(jié)構(gòu)； 張弦梁； 索撐連接； 試驗
中圖分類號：TU394文獻標識碼：A文章編號：1002-848X(2017)12-0053-05
Static load test study on beam string structures with two different cable-strut joints
Li Yaming1,2, Yang Siqi1，3, Tang Baijian1, Wang Fei1
(1 School of Architecture and Civil Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China; 2 Shanghai Architectural Design & Research Institute Co.， Ltd.， Shanghai 200041, China; 3 Jiaxing Vocational Technical College, Jiaxing 314036, China)
Abstract:To study the effect of different cable-strut joint types on the mechanical behavior of a beam string structure, two beam string structure specimens, one with the continuous cable-strut joint and the other with the intermittent continuous cable-strut joint, were designed for comparison. The static tests were carried out under three kinds of working conditions, namely, the prestressed loads, the concentrated loads in the mid span and the asymmetrical concentrated loads, and the cable force loss and the cable elongation were analyzed in two cases. The results show that the cable force loss of two models compared to the cable force is small, and the cable force has the linear increase with the increase of external load and cable forces of two models are similar in size. Under the mid\|span concentrated loads, cable force loss of beam string with intermittent cable-strut joint is almost the same, and cable force loss of beam string with continuous cable-strut joint increases with the increase of external load. Under the asymmetric concentrated loads, cable force loss of beam string with continuous cable-strut joint is almost unchanged, while cable force loss of beam string with intermittent cable-strut joint increases with the increase of loads.
Keywords:prestressed steel structure; beam string structure; cable-strut joint; test
*江蘇省結(jié)構(gòu)工程重點實驗室項目（ZD1302）,住建部科技計劃項目（2016-K5-049）。
通訊作者：王飛，博士，副教授，Email：1265496405@qq.com。
