- 摘 要
-
（延邊大學工學院土木工程系， 延吉 133002）
［摘要］選取5種不同坡度鉸接折線形鋼梁進行壓彎試驗，觀察試驗梁破壞形態(tài)并分析試驗結果，結果表明試驗梁的極限承載力隨坡度的減小先下降后緩慢上升；荷載-撓度曲線表現(xiàn)為彈性和彈塑性；梁端水平位移較大幅度地增加了試驗梁撓度，坡度越小的試驗梁對梁端位移的增加越敏感。分析了考慮和不考慮支座相對位移時，坡度、鋼梁跨度和集中荷載作用點等變量對鋼梁的支座水平反力和跨中撓度的影響，并給出了均布荷載作用下鋼梁的支座水平反力和跨中撓度，為鋼筋混凝土柱-鋼梁的設計提供理論依據(jù)。
［關鍵詞］折線形鋼梁； 支座水平反力； 支座位移； 撓度
中圖分類號：TU391文獻標識碼：A文章編號：1002-848X(2018)06-0057-05
Experimental study of horizontal bearing reaction force and deflection on folding steel beam
Huang Junchao, Zhang Zhixin, Cui Wenyi
(Department of Civil Engineering, Yanbian University， Yanji 133002， China)
Abstract:Compression-bending experiment was conducted on folding steel beams with five kinds of hinge forms with different gradients. The failure modes of the experimental beams were observed and the experimental results were analyzed. Results show that the ultimate bearing capacity of the experimental beams decreases first and then increases with the decrease of the gradient slowly. The load-deflection curve features elastic and elasto-plastic. The horizontal displacement of the beam end greatly increases the deflection of experimental beams. The experimental beams with smaller gradient is more sensitive to the increase of beam end displacement. The influences of such variables as gradient, steel beam span and concentrated load acting point on horizontal bearing reaction force and mid-span deflection of steel beam were analyzed on the horizontal bearing reaction force and mid-span with and without considering the relative displacement of the support. The horizontal bearing reaction force and mid-span deflection of steel beam under uniform load were given to provide a theoretical basis for the design of reinforced concrete column-steel beam.
Keywords:folding steel beam; horizontal bearing reaction force; support displacement; deflection
作者簡介：黃軍超，碩士，Email:953782578@qq.com。
