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EXPERIMENTAL RESEARCH ON THE MECHANICAL PERFORMANCES OF DOUBLE-BOX STEEL-CONCRETE CONTINUOUS CURVED COMPOSITE GIRDERS
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摘要: 为研究连续曲线组合梁桥在运营期的力学性能，以直埠南枢纽C匝道实际工程为背景，考虑横隔板连接方式和曲线半径的影响，设计了3根相较于实际案例缩尺比例为1∶10的连续曲线组合梁，进行4种运营工况下的静载试验，得到了试件在各工况下的荷载-挠度曲线、控制截面的应变沿梁高与横向的分布规律等。经对比研究发现：在4种运营工况下，对跨中挠度来说，荷载分布在外侧钢梁处为最不利工况；组合梁偏载系数约为1.30；曲线半径对曲线组合梁的受力性能有一定影响，横隔板的连接方式对其影响不大。
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关键词:
- 钢-混凝土连续曲线组合梁 /
- 弯扭性能 /
- 横隔板连接方式 /
- 曲线半径
Abstract: In order to study the mechanical properties of continuous curved composite girder bridges during operation, taking the actual project of ramp C of Zhibu South Junction as the background, considering the influence of the connection mode of the diaphragms and the curve radius, three continuous curved composite girders with a scale reduction ratio of 1∶10 compared with the actual case were designed. Static load tests under four operating conditions were carried out.The load-deflection curves and the distribution law of the control sections strain along the height and transverse direction under the working conditions were obtained. A comparative study found that under the four operating conditions the partial load of the outer box was the most disadvantaged for cross-center deflection. The eccentric load factor of the composite girder was around 1.30. The curve radius had a certain effect on the mechanical properties of the curved composite girder, and the connection method of the diaphragms had little effect on it. -
THEVENDRAN V, CHEN S, SHANMUGAM N E, et al.Nonlinear Analysis of Steel-Concrete Composite Beams Curved in Plan[J].Finite Elements in Analysis and Design, 1999,32(3):125-139. THEVENDRAN V,CHEN S,SHANMUGAM N E,et al.Experi-mental Study on Steel-Concrete Composite Beams Curved in Plan[J].Engineering Structures, 2000, 22(8):877-889. TAN E L,UY B. Experimental Study on Straight Composite Beams Subjected to Combined Flexure and Torsion[J].Journal of Constructional Steel Research,2009,65(4):784-793. TAN E L,UY B. Experimental Study on Curved Composite Beams Subjected to Combined Flexure and Torsion[J].Journal of Constructional Steel Research,2009,65(8/9):1855-1863. 聂建国,唐亮,胡少伟,等.钢-混凝土组合箱梁的抗扭强度[J].土木工程学报,2008,41(1):1-11. 张彦玲,葛威,侯忠明,等.弯扭联合作用下钢-混凝土组合箱梁受力特性的试验研究[J].石家庄铁道大学学报, 2012,25(4):1-6. 张彦玲,孙瞳,张德莹.钢-混凝土曲线组合梁弯扭性能的试验研究[J].石家庄铁道大学学报, 2014,27(4):1-8. 张彦玲,孙瞳,侯忠明,等.隔板式钢-混凝土曲线组合梁弯扭性能[J].吉林大学学报, 2015,45(4):1107-1114. 齐书瑜,张彦玲,张德莹.曲线组合梁在负弯矩和扭矩联合作用下受力性能的试验研究[J].石家庄铁道大学学报, 2016,29(3):1-6. 冯康平,曹晓亮,张彦玲. 钢混组合梁负弯扭作用下的受力性能试验研究[J].广西大学学报, 2017,42(4):1299-1306. 中华人民共和国住房和城乡建设部. 公路桥涵通用设计规范:JTG D60-2015[S]. 北京:人民交通出版社,2015. -
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