吉林大学学报(工学版) ›› 2026, Vol. 56 ›› Issue (3): 689-699.doi: 10.13229/j.cnki.jdxbgxb.20240546

• 交通运输工程·土木工程 • 上一篇    

波形钢腹板预应力组合箱梁纯扭全过程分析

张皓1(),陈宜言1,叶俊宇1,董桔灿2,赵秋1()   

  1. 1.福州大学 土木工程学院,福州 350108
    2.云基智慧工程股份有限公司,广东 深圳 518000
  • 收稿日期:2024-05-17 出版日期:2026-03-01 发布日期:2026-03-31
  • 通讯作者: 赵秋 E-mail:470268065@qq.com;zhaoqiu@fzu.edu.cn
  • 作者简介:张皓(1995-),男,博士研究生.研究方向:钢混组合结构.E-mail:470268065@qq.com
  • 基金资助:
    福建省自然科学基金项目(2019J01232)

Full⁃range analysis of prestressed composite box girder with corrugated steel webs under pure torsion

Hao ZHANG1(),Yi-yan CHEN1,Jun-yu YE1,Ju-can DONG2,Qiu ZHAO1()   

  1. 1.School of Civil Engineering,Fuzhou University,Fuzhou 350108,China
    2.Yunji Intelligent Engineering Limited Company,Shenzhen 518000,China
  • Received:2024-05-17 Online:2026-03-01 Published:2026-03-31
  • Contact: Qiu ZHAO E-mail:470268065@qq.com;zhaoqiu@fzu.edu.cn

摘要:

本文基于联合作用软化桁架模型(CA-STM)提出了一种适用于波形钢腹板组合箱梁的扭转理论模型(PCA-STM),并给出了优化算法。该模型考虑了预应力效应,并根据腹板屈服状态引入了波形钢腹板与混凝土板之间的变形协调关系。通过试验验证了理论模型的准确性,结果表明:PCA-STM可以很好地预测波形钢腹板组合箱梁在纯扭作用下的全过程受力行为,包括扭矩-扭率曲线、混凝土和波形钢腹板剪应变曲线等。

关键词: 桥梁与隧道工程, 联合作用软化桁架模型, 波形钢腹板, 优化算法, 纯扭作用

Abstract:

A torsional theoretical model (PCA-STM) applicable to composite box girders with corrugated steel webs (CSW) is proposed based on the combined action softened truss model (CA-STM), and an optimized algorithm is given. This model takes into account the prestressing effect and introduces a deformation coordination relationship between the CSW and the concrete slabs based on the yield state of the CSW. The accuracy of the theoretical model is verified by experiments and the results show that PCA-STM can well predict the full torsional behavior of the composite box girders with CSW, including the torque-twist curve, shear strain curves of concrete and CSW.

Key words: bridge and tuunel engineering, combined action softened truss model, corrugated steel webs, optimized algorithm, pure torsion

中图分类号: 

  • TU318

图1

构件截面转换"

图2

平面应力状态"

图3

应变梯度效应"

图4

混凝土受压"

图5

混凝土受拉"

图6

受拉钢筋"

图7

预应力钢束"

图8

波形钢腹板"

图9

钢筋和预应力筋等效面积"

图10

求解流程图"

图11

试验梁尺寸(单位:mm)"

表1

试验梁材料属性"

混凝土立方体抗压强度/MPa屈服强度/MPa初始预应力/kN有效预应力/kN
纵筋箍筋波形钢腹板
50.3400400260125105

图12

加载装置"

图13

应变片布置(单位: mm)"

图14

破坏模式"

表2

已有试验梁加载状况"

试验梁边界条件加载方式预应力布置有效预应力/kN
1#18一端固定、另一端自由旋转纯扭顶板2φ15.2、底板2φ15.2/后张法100
2#18一端固定、另一端自由旋转纯扭顶板2φ15.2、底板2φ15.2/后张法100
3#18一端固定、另一端自由旋转纯扭顶板2φ15.2、底板2φ15.2/后张法100
4#18一端固定、另一端自由旋转纯扭顶板2φ15.2、底板2φ15.2/后张法100
S-16一端固定、另一端自由旋转纯扭顶板2φ15.2、底板2φ15.2/后张法105
S-26一端固定、另一端自由旋转纯扭顶板2φ15.2、底板2φ15.2/后张法105

表3

理论扭矩与试验结果对比"

试验梁开裂状态腹板屈服状态极限扭矩状态

TX,crExp/

(kN·m)

TC,crTh/

(kN·m)

TX,crExpTC,crTh

TWExp/

(kN·m)

TW,CTh/

(kN·m)

TWExpTW,CTh

TX,uExp/

(kN·m)

TC,uTh/

(kN·m)

TX,uExpTC,uTh
1#18113.63121.520.935191.14188.131.016200.00197.261.014
2#18115.60119.350.969196.61198.570.990222.67200.311.112
3#18113.4699.511.140164.05140.961.164224.36207.491.081
4#18113.20107.301.055157.39137.021.149180.92188.030.962
S-1675.9271.041.069105.20111.280.945128.05138.990.921
S-2690.9292.020.988134.86127.951.054165.50176.760.936
A-166.8256.721.178126.01125.361.005155.68166.450.935
平均值--1.048--1.046--0.994
标准差--0.083--0.076--0.071

图15

扭矩-扭率曲线"

表4

理论扭率与试验结果对比"

试验梁开裂状态腹板屈服状态极限扭矩状态

θX,crExp/

(rad·m-1

θC,crTh/

(rad·m-1

θX,crExpθC,crTh

θWExp/

(rad·m-1

θW,CTh/

(rad·m-1

θWExpθW,CTh

θX,uExp/

(rad·m-1

θC,uTh/

(rad·m-1

θX,uExpθC,uTh
1#180.0040.0041.0000.0230.0171.3530.0290.0380.763
2#180.0050.0041.2500.0180.0320.5630.0320.0420.762
3#180.0020.0021.0000.0040.0080.5000.0200.0400.500
4#180.0030.0031.0000.0080.0081.0000.0190.0240.792
S-160.0030.0021.5000.0080.0090.8890.0280.0251.120
S-260.0030.0031.0000.0100.0081.2500.0300.0261.154
A-10.0030.0021.5000.0080.0061.3330.0290.0330.879
平均值--1.179--0.984--0.853
标准差--0.220--0.327--0.210

图16

扭矩-混凝土剪应变曲线"

图17

扭矩-波形钢腹板剪应变曲线"

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