摘要
目前关于波形钢腹板组合箱梁的挠度研究,多以直线箱梁为主,而对于曲线箱梁的挠度研究甚少。通过对弹性阶段的波形钢腹板组合曲线箱梁CCBG(CSWs)的挠度值进行试验研究,分析在两点对称加载和单点偏心加载工况下,CCBG(CSWs)的挠度值的变化规律,结合数值模拟进行对比,结果表明:CCBG(CSWs)的荷载-位移曲线,在不同的工况和不同截面下,挠度值都随着荷载的变化呈线性关系;相同的荷载作用下,随着截面的变化,挠度值呈现出先增大后减少趋势,而跨中的竖向挠度最大;外侧挠度整体曲线呈现出"U"型,内侧挠度整体曲线为倒"V"型;相同条件下,曲线梁的外侧挠度值大于内侧挠度值;模拟值和实测值比较接近,有效地验证了模型的可靠性。
The previous investigation on the deflection of box girder with corrugated steel webs mainly focus on straight box girder, but there is little research on the deflection of curved box girder. This paper conducted the experimental investigation on the deflection values of CCBG(CSWs) at elastic phase, the variation laws of deflection values of CCBG(CSWs) under the condition of two-point symmetrical loading and single-point eccentric loading were analyzed, and then compared with the results of numerical simulations. The results showed that: the load-displacement curve of CCBG(CSWs) had a linear relationship with the change of load under different working conditions and different cross sections;under the same loading conditions, with the changes of cross section, the deflection values increased firstly and then decreased whereas the mid-span vertical deflection was the largest;the overall curve of the outer arc presented the type of ’U’ while the inner arc presented inverted ’V’;under the same condition, the outer deflection value was larger than the inner deflection;the simulated value was close to the experiment value and validated for the value.
作者
夏叶飞
杜文平
潘勇
杨才千
XIA Yefei;DU Wenping;PAN Yong;YANG Caiqian(Jiangsu Huatong Engineering Testing Co.Ltd,Nanjing 210000,China;School Civil Engineering,Southeast University Nanjing 210096,China;Jiangsu Fenguan Highway Management Co.Ltd,Lianyungang 222000,China)
出处
《钢结构》
2018年第12期89-92,62,共5页
Steel Construction
关键词
波形钢腹板
曲线组合箱梁
挠度
荷载-位移曲线
corrugated steel webs
composite curved box girder
deflection
load-displacement curve
作者简介
第一作者:夏叶飞,男,1979年出生,硕士,高级工程师;通信作者:杨才千,ycqjxx@sen.edu.cn。
