|Table of Contents|

Analysis on Structural Form and Mechanical Performance of an Innovative Steel Truss Girder-concrete Box Girder Connecting Section(PDF)

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

Issue:
2022年06期
Page:
133-142
Research Field:
结构工程
Publishing date:

Info

Title:
Analysis on Structural Form and Mechanical Performance of an Innovative Steel Truss Girder-concrete Box Girder Connecting Section
Author(s):
DENG Shu-fei1;  LIU Yong-jian2;  ZONG Xin3
(1. Yunnan Design Institute Group Co., Ltd., Kunming 650228, Yunnan, China; 2. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 3. CCCC Second Highway Consultants Co., Ltd., Wuhan 430056, Hubei, China)
Keywords:
bridge engineering;  hybrid girder cable-stayed bridge;  steel truss girder;  steel-concrete connecting section;  structural form;  mechanical performance;  numerical simulation
PACS:
TU311
DOI:
10.19815/j.jace.2021.07063
Abstract:
In order to study the structural form and mechanical performance of an innovative steel truss girder-concrete box girder connecting section, a numerical model of the real steel concrete connecting section of the bridge was established based on the Yachi river bridge of Guiqian expressway. The mechanical performance and force transmission of each part of the connecting section under the maximum vertical moment load condition were analyzed in detail. Three kinds of main structural variables were selected(the type of shear connector, the length of connecting section and the length of transition section), and the effects of different structural parameters on the mechanical performance of the connecting section were compared. The results show that the structure of the connecting section is reasonable and the stress is reliable. The overall stress level is not high except for the stress concentration at the anchorage point of the steel plate prestressed tendon and the concrete corner. The longitudinal shear force distribution of the connectors on the steel roof and bottom plate of the connecting section is uneven, the shear force around is larger, and the degree of transverse nonuniformity is more serious. The force transmission between steel beam and concrete in the connecting section is stable. The internal force of steel plate near the bearing plate can quickly transfer to the concrete, and the stress of concrete far away from the bearing plate tends to be uniform. Compared with PBL and composite connectors, the shear force distribution of stud connector is more uniform and the force transmission is smoother. The increase of the length of the connecting section will reduce the force transfer efficiency of the middle section, so it's unreasonable to blindly increase its length. Increasing the length of the transition section will make more internal forces distributed to the bearing plate, and has no obvious easing effect on the transverse non-uniform distribution of internal forces.

References:

[1] 黄彩萍.混合梁斜拉桥钢混结合段受力性能的试验研究与理论分析[D].武汉:华中科技大学,2012.
HUANG Cai-ping.Experimental Study and Theoretical Analysis of Mechanical Behavior of Steel-concrete Joint Section of Hybrid Girder Cable-stayed Bridge[D].Wuhan:Huazhong University of Science and Technology,2012.
[2]周 阳.大跨度铁路混合梁斜拉桥钢-混结合段静力和疲劳性能研究[D].成都:西南交通大学,2016.
ZHOU Yang.Study on Static Behavior and Fatigue Performance of Steel-concrete Joint Section of Long-span Railway Hybrid Girder Cable-stayed Bridge[D].Chengdu:Southwest Jiaotong University,2016.
[3]苏庆田,秦 飞.新型混合梁桥结构体系及设计参数[J].同济大学学报(自然科学版),2013,41(6):799-805.
SU Qing-tian,QIN Fei.A New Type Hybird-beam Bridge Structural System and its Design Parameters[J].Journal of Tongji University(Natrural Science),2013,41(6):799-805.
[4]施 洲,顾家昌,周勇聪.铁路混合梁斜拉桥钢混结合段研究综述[J].中国铁道科学,2022,43(2):48-59.
SHI Zhou,GU Jia-chang,ZHOU Yong-cong.Research Review on Steel-concrete Composite Joint of Railway Hybrid Girder Cable-stayed Bridge [J].China Railway Science,2022,43(2):48-59.
[5]王军文,倪章军,李建中,等.石板坡长江大桥钢混结合段局部应力分析[J].公路交通科技,2007,24(8):99-102.
WANG Jun-wen,NI Zhang-jun,LI Jian-zhong,et al.Analysis on Local Stress of Steel-concrete Beam Linked Part of Shibanpo Bridge[J].Journal of Highway and Transportation Research and Development,2007,24(8):99-102.
[6]胡建华,蒲怀仁.PBL剪力键钢混结合段设计与试验研究[J].钢结构,2007,22(2):62-68.
HU Jian-hua,PU Huai-ren.Design and Test of the Joint Part of Steel-concrete Girder Bridge with PBL Shear Connector[J].Steel Construction,2007,22(2):62-68.
[7]秦凤江,周绪红,梁博文,等.大跨度自锚式悬索桥主梁钢-混结合段模型试验[J].中国公路学报,2018,31(9):52-64.
QIN Feng-jiang,ZHOU Xu-hong,LIANG Wen-bo,et al.Expetimental on Steel-concrete Joint of Hybrid Girder of a Long-span Self-anchored Suspension Bridge [J].China Journal of Highway and Transport,2018,31(9):52-64.
[8]施 洲,顾家昌,余万庆,等.大跨度斜拉桥双向曲面混合桥塔钢-混结合段受力性能研究[J].中国公路学报,2022,35(6):73-85.
SHI Zhou,GU Jia-chang,YU Wan-qing,et al.Study on the Mechanical Behavior of Bi-directionally Curved Composite Pylon Steel-concrete Joints for a Long-span Cable-stayed Bridge [J].China Journal of Highway and Transport,2022,35(6):73-85.
[9]李小珍,肖 林,黄 玲,等.混合梁斜拉桥钢-混结合段静力行为[J].哈尔滨工业大学学报,2013,45(6):75-82.
LI Xiao-zhen,XIAO Lin,HUANG Ling,et al.Static Mechanical Behavior of Steel-concrete Joint Section of Hybrid Beam Cable-stayed Bridges[J].Journal of Harbin Institute of Technology,2013,45(6):75-82.
[10]张景峰,李小珍,肖 林,等.混合梁斜拉桥钢-混结合段受力行为仿真分析[J].西南交通大学学报,2014,49(4):619-625,699.
ZHANG Jing-feng,LI Xiao-zhen,XIAO Lin,et al.Numerical Simulation Analysis of Steel-concrete Joint Section in Hybrid Girder of Cable-stayed Bridge[J].Journal of Southwest Jiaotong University,2014,49(4):619-625,699.
[11]YANG S L,PU Q H,SHI Z,et al.Mechanical Behavior of Steel-concrete Composite Joints in Railway Hybrid Cable-stayed Bridges[J].Journal of Constructional Steel Research,2020,173:106242.
[12]HE S H,MOSALLAM A S,FANG Z,et al.Structural Evaluation of Steel-concrete Joint with UHPC Grout in Single Cable-plane Hybrid Cable-stayed Bridges[J].Journal of Bridge Engineering,2019,24(4):04019022.
[13]姚亚东,么超逸,杨永清.铁路斜拉桥钢混结合段的收缩徐变行为分析[J].铁道学报,2020,42(7):148-154.
YAO Ya-dong,YAO Chao-yi,YANG Yong-qing.Time-dependent Creep and Shrinkage Analysis of Steel-concrete Composite Segment of Cable-stayed Railway Bridge[J].Journal of the China Railway Society,2020,42(7):148-154.
[14]YAO Y D,YAN M,SHI Z,et al.Mechanical Behavior of an Innovative Steel-concrete Joint for Long-span Railway Hybrid Box Girder Cable-stayed Bridges[J].Engineering Structures,2021,239:112358.
[15]KIM S H,LEE C G,KIM S J,et al.Experimental Study on Joint of Spliced Steel-PSC Hybrid Girder,Part II:Full-scale Test of Spliced Hybrid I-girder[J].Engineering Structures,2011,33(9):2668-2682.
[16]张 凯,刘永健,琚明杰,等.无格室钢-混结合段构造形式与受力性能分析[J].公路交通科技,2016,33(4):73-79,95.
ZHANG Kai,LIU Yong-jian,JU Ming-jie,et al.Analysis of Structural Types and Mechanical Performance in Steel-concrete Connections Without Cell[J].Journal of Highway and Transportation Research and Development,2016,33(4):73-79,95.
[17]周 阳,蒲黔辉,施 洲,等.混合梁斜拉桥钢-混结合段剪力连接件群力学性能研究[J].铁道学报,2017,39(10):134-141.
ZHOU Yang,PU Qian-hui,SHI Zhou,et al.Study on Mechanical Behavior of Group Shear Connectors for Steel-concrete Composite Joint of Hybrid Girder Cable-stayed Bridge [J].Journal of the China Railway Society,2017,39(10):134-141.
[18]XIAO L,LI X Z,JOHN MA Z.Behavior of Perforated Shear Connectors in Steel-concrete Composite Joints of Hybrid Bridges[J].Journal of Bridge Engineering,2017,22(4):04016135.
[19]HE J,LIU Y Q,PEI B Z.Experimental Study of the Steel-concrete Connection in Hybrid Cable-stayed Bridges[J].Journal of Performance of Constructed Facilities,2014,28(3):559-570.
[20]DI J,ZOU Y,ZHOU X H,et al.Push-out Test of Large Perfobond Connectors in Steel-concrete Joints of Hybrid Bridges[J].Journal of Constructional Steel Research,2018,150:415-429.
[21]ZOU Y,DI J,ZHOU J T,et al.Shear Behavior of Perfobond Connectors in the Steel-concrete Joints of Hybrid Bridges[J].Journal of Constructional Steel Research,2020,172:106217.
[22]ZOU Y,ZHENG K D,ZHOU J T,et al.Mechanical Behavior of Perfobond Connector Group in Steel-concrete Joint of Hybrid Bridge[J].Structures,2021,30:925-936.
[23]HE S H,FANG Z,FANG Y W,et al.Experimental Study on Perfobond Strip Connector in Steel-concrete Joints of Hybrid Bridges[J].Journal of Constructional Steel Research,2016,118:169-179.
[24]HE S H,FANG Z,MOSALLAM A S.Push-out Tests for Perfobond Strip Connectors with UHPC Grout in the Joints of Steel-concrete Hybrid Bridge Girders[J].Engineering Structures,2017,135:177-190.
[25]吴游宇,邓淑飞.贵黔高速鸭池河大桥主梁结构受力行为分析[J].世界桥梁,2016,44(4):71-75.
WU You-yu,DENG Shu-fei.Analysis of Load Bearing Behavior of Main Girder Structure of Yachi River Bridge on Guiyang-Qianxi Expressway[J].World Bridges,2016,44(4):71-75.

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Last Update: 2022-12-20