|Table of Contents|

Research on Internal Force of Crossbeam in Curved Steel-concrete Composite Twin I-girder Bridge(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2022年05期
Page:
63-73
Research Field:
结构工程
Publishing date:

Info

Title:
Research on Internal Force of Crossbeam in Curved Steel-concrete Composite Twin I-girder Bridge
Author(s):
YAN Xin-kai1 LIU Yong-jian12 XING Zi-han1 FENG Bo-wen1 CHEN Xiao1
(1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Research Center of Highway Large Structure Engineering on Safety of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China)
Keywords:
curved steel composite twin I-girder bridge crossbeam Vlasov's thin-wall structure theory numerical simulation
PACS:
TU311
DOI:
10.19815/j.jace.2022.02067
Abstract:
In order to study the influence of the longitudinal warpage deformation of the main beam web on the internal force of the crossbeam, on the basis of the existing crossbeam frame model, the distribution laws of physical parameters such as warpage deformation and structural torsion angle of a simply supported curved steel-concrete composite twin-I girder bridge under concentrated load were obtained through the Vlasov's thin-wall structure theory. The deformation coordination relationship between the main beam web and the crossbeam was used to analyze the longitudinal deformation of the crossbeam. The internal force composition of the crossbeam and the normal stress distribution law of the section were obtained and verified by the finite element analysis. The results show that the positive stress distribution law of the crossbeam based on Vlasov's thin-wall structure theory is basically consistent with the law obtained from finite element calculation. The crossbeam positive stresses near the loading point are dominated by the “vertical bending effect”, and the “web deformation inconsistency effect” of the crossbeam near the bearing section is greater than that of the crossbeam near the loading point section. The warpage deformations of the web on both sides of the loading point section are in opposite directions, which leads to the opposite distribution of the crossbeam positive stress. The distribution law of stress generated by the crossbeam vertical bending deformation is similar to that of the main beam bending moment, and distribution law of the stress generated by the longitudinal bending deformation is similar to that of the torsion rate.

References:

[1] 刘永健,高诣民,周绪红,等.中小跨径钢-混凝土组合梁桥技术经济性分析[J].中国公路学报,2017,30(3):1-13.
LIU Yong-jian,GAO Yi-min,ZHOU Xu-hong,et al.Technical and Economic Analysis in Steel-concrete Composite Girder Bridges with Small and Medium Span[J].China Journal of Highway and Transport,2017,30(3):1-13.
[2]刘永健,吴浩伟,封博文,等.车轮荷载作用下双工字钢组合梁桥横桥向焊钉拉拔效应[J].建筑科学与工程学报,2020,37(2):1-10.
LIU Yong-jian,WU Hao-wei,FENG Bo-wen,et al.Tensile Effect of Welding Studs in Transverse Direction of Twin-I Steel Composite Girder Bridge Under Wheel Load[J].Journal of Architecture and Civil Engineering,2020,37(2):1-10.
[3]孙训方,方孝淑,关来泰,等.材料力学(Ⅱ)[M].5版.北京:高等教育出版社,2013.
SUN Xun-fang,FANG Xiao-shu,GUAN Lai-tai,et al.Mechanics of Materials(Ⅱ)[M].5th ed.Beijing:Higher Education Press,2013.
[4]景 东.工字型组合梁荷载分配特性及横桥向稳定性研究[D].重庆:重庆交通大学,2020.
JING Dong.Study on Load Distribution Characteristics and Transverse Stability of I-shaped Composite Beams[D].Chongqing:Chongqing Jiaotong University,2020.
[5]TUNG D,FOUNTAIN R S.Approximate Torsional Analysis of Curved Box Girders by the M/r-method[J].Engineering,1970,7(3):65-74.
[6]JR POELLOT W N.Computer-aided Design of Horizontally Curved Girders by the V-load Method[J].Engineering Journal,1987,24(1):42-50.
[7]LIU D J,MAGLIOLA R.End Forces on Crossframes in Horizontally Curved Steel I-girder Bridges[J].Practice Periodical on Structural Design and Construction,2010,15(1):21-26.
[8]XIANG D,LIU Y Q,YANG F.Numerical and Theoretical Analysis of Slab Transverse-moment Distributions in Twin-girder Crossbeam Composite Bridges[J].Journal of Bridge Engineering,2020,25(3):04020004.
[9]拉伯特,赫 特.钢桥:钢与钢-混组合桥梁概念和结构设计[M].葛耀君,苏庆田,译.北京:人民交通出版社,2014.
LEBET J P,HIRT M A.Steel Bridges:Conceptual and Structural Design of Steel and Steel-concrete Composite Bridges[M].Translated by GE Yao-jun,SU Qing-tian.Beijing:China Communications Press,2014.
[10]LIN W W,LAM H,YODA T.Experimental Study on Steel-concrete Composite Twin I-girder Bridges[J].Journal of Bridge Engineering,2020,25(1):04019129.
[11]龙驭球,包世华,匡文起,等.结构力学教程(Ⅱ)[M].北京:高等教育出版社,2001.
LONG Yu-qiu,BAO Shi-hua,KUANG Wen-qi,et al.Structural Mechanics(Ⅱ)[M].Beijing:Higher Education Press,2001.
[12]郝际平,钟炜辉.薄壁杆件的弯曲与扭转[M].北京:高等教育出版社,2006.
HAO Ji-ping,ZHONG Wei-hui.Bending and Torsion of Thin-walled Bar[M].Beijing:Higher Education Press,2006.
[13]包世华,周 坚.薄壁杆件结构力学[M].北京:中国建筑工业出版社,1991.
BAO Shi-hua,ZHOU Jian.Structural Mechanics of Thin-walled Members[M].Beijing:China Architecture & Building Press,1991.
[14]KOLLBRUNNER C F,BASLER K.Torsion in Structures[M].Berlin:Springer,1969.
[15]李惠生,张罗溪.曲线梁桥结构分析[M].北京:中国铁道出版社,1992.
LI Hui-sheng,ZHANG Luo-xi.Structural Analysis of Curved Girder Bridges[M].Beijing:China Railway Publishing House,1992.
[16]高岛春生.曲线梁桥[M].张德礼,译.北京:中国建筑工业出版社,1979.
TAKASHIMA H.Curved Girder Bridge[M].Translated by ZHANG De-li.Beijing:China Architecture & Building Press,1979.
[17]刘柏青,张士铎.十九、曲线桥梁(上)[J].中南公路工程,1989,14(1):47-56.
LIU Bo-qing,ZHANG Shi-duo.XIX.Curved Bridges(Above)[J].Central South Highway Engineering,1989,14(1):47-56.
[18]ZHANG Y L,HOU Z M,LI Y S,et al.Torsional Behaviour of Curved Composite Beams in Construction Stage and Diaphragm Effects[J].Journal of Constructional Steel Research,2015,108:1-10.
[19]马晓蕾.钢板混凝土组合连续梁横向受力性能研究[D].北京:北京交通大学,2020.
MA Xiao-lei.Research on the Transverse Mechanical Performance of Steel Slab-concrete Composite Continuous Beam[D].Beijing:Beijing Jiaotong University,2020.
[20]SHEN C D,SONG Y F,YAN L,et al.Experimental and Numerical Investigation on the Bearing Behavior of Curved Continuous Twin I-girder Composite Bridge with Precast Concrete Slab[J].Advances in Civil Engineering,2021,2021:8872092.

Memo

Memo:
-
Last Update: 2022-09-30