[1]王晓明,白云腾,录哲元,等.内衬混凝土对预应力导入效率的影响分析及优化[J].长安大学学报(自然科学版),2024,44(2):80-88.[doi:10.19721/j.cnki.1671-8879.2024.02.008]
　WANG Xiao-ming,BAI Yun-teng,LU Zhe-yuan,et al.Analysis and optimization of effect of lining concrete on efficiency of prestressing introduction[J].Journal of Chang’an University (Natural Science Edition),2024,44(2):80-88.[doi:10.19721/j.cnki.1671-8879.2024.02.008]
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内衬混凝土对预应力导入效率的影响分析及优化()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第44卷
期数:
2024年2期
页码:
80-88
栏目:
桥梁与隧道工程
出版日期:
2024-03-01

文章信息/Info

Title:
Analysis and optimization of effect of lining concrete on efficiency of prestressing introduction
文章编号:
1671-8879(2024)02-0080-09
作者:
王晓明1; 白云腾1; 录哲元2; 黄春杨1; 王炳玉1
(1. 长安大学 桥梁工程研究所,陕西 西安 710064; 2. 黄河勘测规划设计研究院有限公司,河南 郑州 450003)
Author(s):
WANG Xiao-ming1;  BAI Yun-teng1;  LU Zhe-yuan2;  HUANG Chun-yang1;  WANG Bing-yu1
(1. Institute of Bridge Engineering, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Yellow River Engineering Consulting Co. Ltd., Zhengzhou 450003, Henan, China)
关键词:
桥梁工程;  CSW-PC连续刚构桥;  有限元模型;  内衬混凝土;  “先撑后衬”施工方法;  预应力导入效率
Keywords:
bridge engineering;  rigid frame bridge with corrugated steel webs;  FEM;  lining concrete;  brace first and then lining construction method;  prestressing introduction efficiency
分类号:
U445
DOI:
10.19721/j.cnki.1671-8879.2024.02.008
文献标志码:
A
摘要:
针对内衬混凝土对波形钢腹板褶皱效应的约束会致使波形钢腹板组合梁桥支承区的预应力导入效率降低问题,提出一种“先撑后衬”施工方法,通过调整内衬混凝土的施工顺序来改善支承区预应力导入效率; 同时提出一种适用于该方法的“内撑外拉”装置,保证施工过程中波形钢腹板的稳定性; 推导波形钢腹板组合梁轴向刚度计算公式,并通过简支波形钢腹板组合梁算例验证该公式的准确性。在此基础上,以1座四跨波形钢腹板预应力混凝土连续刚构桥为背景,建立ANSYS实体有限元模型,分析不同施工方法、内衬混凝土长度及厚度变化对支承区预应力导入效率的影响,并给出内衬混凝土的合理施工工序、合理长度和厚度建议。研究结果表明:内衬混凝土会削弱波形钢腹板的褶皱效应,显著降低支承区预应力导入效率,同时会导致有内衬梁段与无内衬梁段间的过渡段出现应力集中现象; 通过采用所提出的“先撑后衬”施工方法,可以降低支承区组合梁的轴向刚度,从而显著提高支承区预应力导入效率; 支承区预应力导入效率随着内衬混凝土长度和厚度的增加而减小; 在实桥设计时,建议内衬混凝土最小长度应大于支点处梁高,最大长度应小于2.15倍支点处梁高,最大厚度应不小于支点梁高的6%,最小厚度应满足构造要求。
Abstract:
Aimed at the problem that the restraint of the lining concrete on the crease effect of the corrugated steel webs will reduce the prestressingefficiency in the supporting area of composite girder bridges with corrugated steel webs. A “brace first and then lining” construction method, which adjusted the construction sequence of liningconcrete, was proposed to improve the prestressing efficiency. An “internal brace and external tension” devicewas proposed for the brace first and then lining construction method to ensure the stability of the corrugatedsteel webs during construction. The formula for calculating the axial stiffness of composite girders withcorrugated steel webs was derived, and the accuracy was verified by an example of simply supported corrugatedsteel web girder. Based on a four-span corrugated steel web prestressed concrete(CSW-PC)continuousrigid-frame bridge, an ANSYS solid finite element model was established to analyze the effect of differentconstruction methods, variations of lining concrete length and thickness on the prestressing efficiency in thesupporting area. And a reasonable construction procedure, length and thickness of lining concrete was suggested. The results show that the lining concrete reduces the crease effect and prestressing efficiency of the corrugated steel webs, and causes a stress concentration in the transition section between the lining and unlininggirder sections. By adopting the brace first and then lining method, the axial stiffness of composite girderswith corrugated steel webs is reduced and the prestressing efficiency is increased. The prestressing efficiency inthe supporting area decreases with the increase of lining concrete's length and thickness. In the actual design, itis recommended that the minimum length of lining concrete should be greater than the height of the girder at thepier, the maximum length should be less than 2.15 times the height of the girder at the support, the maximumthickness should be more than 6% the height of the girder at the support, and the minimum thicknessshould meet the construction requirements.14 figs, 23 refs.

参考文献/References:

[1] HE J,LIU Y Q,CHEN A R,et al.Mechanical behavior andanalysis of composite bridges with corrugated steelwebs:State-of-the-art[J].International Journal of SteelStructures,2012,12(3):321-338.
[2]INAAM Q,UPADHYAY A.Accordion effect in bridgegirders with corrugated webs[J].Journal of ConstructionalSteel Research,2022,188:107040.
[3]林梦凯,冀 伟,李海莲,等.波形钢腹板工字型钢梁的手风琴效应研究[J].铁道科学与工程学报,2016,13(2):283-288.
LIN Meng-kai,JI Wei,LI Hai-lian,et al.Study on accordioneffect of corrugated steel webs I-shaped steel girder[J].Journal of Railway Science andEngineering,2016,13(2):283-288.
[4]CHEN Y Y,DONG J C,XU T H.Composite box girderwith corrugated steel webs and trusses-A new type ofbridge structure[J].EngineeringStructures,2018,166:354-362.
[5]HE J,LI X,LI C X,et al.A novelasynchronous-pouring-construction technology forprestressed concrete box girder bridges with corrugated steelwebs[J].Structures,2020,27:1940-1950.
[6]DENG W Q,LIU D,XIONG Y Q,et al.Experimentalstudy on asynchronous construction for composite bridgeswith corrugated steel webs[J].Journal of ConstructionalSteel Research,2019,157:93-102.
[7]WANG X D,MIAO C Q,WANG X M.Prediction analysisof deflection in the construction of composite box-girderbridge with corrugated steel webs based on MEC-BP neuralnetworks[J].Structures,2021,32:691-700.
[8]李宏江.波形钢腹板PC组合箱梁几个特殊问题研究进展[J].应用基础与工程科学学报,2018,26(2):440-454.
LI Hong-jiang.Review on special issues in prestressedconcrete box girders with corrugated steel webs[J].Journalof Basic Science and Engineering,2018,26(2):440-454.
[9]张 峰,李术才,李宏江,等.波形钢腹板内衬混凝土部位抗剪性能[J].交通运输工程学报,2016,16(1):16-24.
ZHANG Feng,LI Shu-cai,LI Hong-jiang,et al.Shearingperformances of corrugated steel webs encased withconcrete[J].Journal of Traffic and TransportationEngineering,2016,16(1):16-24.
[10]刘保东,胥 睿,李祖硕,等.内衬混凝土对波形钢腹板刚构桥扭转和畸变性能的影响[J].中国铁道科学,2017,38(3):31-39.
LIU Bao-dong,XU Rui,LI Zu-shuo,et al.Impact of innerlining concrete on torsion and distortion performance ofcontinuous rigid frame bridge with corrugated steel webs[J].China Railway Science,2017,38(3):31-39.
[11]邓文琴,刘 朵,王 超,等.变截面波形钢腹板内衬混凝土组合梁剪扭性能试验研究[J].东南大学学报(自然科学版),2019,49(4):618-623.
DENG Wen-qin,LIU Duo,WANG Chao,et al.Test study onshearing and torsional behavior of concrete-encasednon-prismatic composite girder with corrugated steel webs[J].Journal of Southeast University(Natural ScienceEdition),2019,49(4):618-623.
[12]ZHANG F,SHEN J A,LIU J Y.Effect of encasedconcrete on section temperature gradient of corrugated steelweb box girder[J].Advances in StructuralEngineering,2021,24(11):2321-2335.
[13]LIU D,ZHAO X B,DENG W Q,et al.Design of liningconcrete of multi-cell composite girder bridge withcorrugated steel webs[J].Proceedings of the Institution ofCivil Engineers-Structures andBuildings,2023,176(1):13-27.
[14]DENG W Q,ZHANG J D,ZHOU M,et al.Experimentalstudy of shear behaviour of concrete-encased non-prismaticgirder with CSWs[J].Magazine of ConcreteResearch,2019,71(19):989-1005.
[15]HE J,LIU Y Q,CHEN A R,et al.Shear behavior ofpartially encased composite I-girder with corrugated steelweb:Experimental study[J].Journal of Constructional SteelResearch,2012,77:193-209.
[16]HE J,LIU Y Q,CHEN A R,et al.Bending behavior ofconcrete-encased composite I-girder with corrugated steelweb[J].Thin-Walled Structures,2014,74:70-84.
[17]贺 君,刘玉擎,吕 展,等.波形钢腹板内衬混凝土组合梁弯、剪性能试验[J].中国公路学报,2017,30(7):94-100,143.
HE Jun,LIU Yu-qing,LU Zhan,et al.Test on flexural andshearing performance of concrete-encased composite girderwith corrugated steel webs[J].China Journal of Highwayand Transport,2017,30(7):94-100,143.
[18]HE J,WANG S H,LIU Y Q,et al.Mechanical behavior ofa partially encased composite girder with corrugated steelweb:Interaction of shear and bending[J].Engineering,2017,3(6):806-816.
[19]HUANG L,HIKOSAKA H,KOMINE K.Simulation ofaccordion effect in corrugated steel web with concreteflanges[J].Computers &Structures,2004,82(23/24/25/26):2061-2069.
[20]贺 君,刘玉擎,吕 展,等.内衬混凝土对波形钢腹板组合梁桥力学性能的影响[J].桥梁建设,2017,47(4):54-59.
HE Jun,LIU Yu-qing,LU Zhan,et al.Effects of encasedconcrete on mechanical behavior of composite girder bridgewith corrugated steel webs[J].BridgeConstruction,2017,47(4):54-59.
[21]WANG S H,HE J,LIU Y Q.Shear behavior of steelI-girder with stiffened corrugated web,Part Ⅰ:Experimentalstudy[J].Thin-Walled Structures,2019,140:248-262.
[22]HE J,WANG S H,LIU Y Q,et al.Shear behavior of steelI-girder with stiffened corrugated web,Part Ⅱ:Numericalstudy[J].Thin-Walled Structures,2020,147:106025.
[23]OH J Y,LEE D H,KIM K S.Accordion effect ofprestressed steel beams with corrugated webs[J].Thin-Walled Structures,2012,57:49-61.

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备注/Memo

备注/Memo:
收稿日期:2023-10-27
基金项目:国家自然科学基金项目(52178104); 陕西省交通科技项目(19-30K)
作者简介:王晓明(1983-),男,山西朔州人,教授,博士研究生导师,E-mail:wxm@chd.edu.cn。
通讯作者:白云腾(1995-),男,陕西延安人,工学博士研究生,E-mail:1071153073@qq.com。
更新日期/Last Update: 2024-03-01