Please wait a minute...
浙江大学学报(工学版)
浙江大学学报(工学版)  2024, Vol. 58 Issue (2): 399-412    DOI: 10.3785/j.issn.1008-973X.2024.02.018
交通工程、土木工程     
轻型组合桥梁负弯矩区接缝抗弯性能试验
邓舒文1,2(),邵旭东2,*(),晏班夫3,邱明红2,4
1. 湖南农业大学 水利与土木工程学院，湖南 长沙 410125
2. 湖南大学 土木工程学院，湖南 长沙 410082
3. 广西大学 土木建筑工程学院，广西 南宁 530004
4. 香港大学 土木工程系，香港 999077
Experiment on flexure behavior of joint in negative moment area of lightweight composite bridge
Shuwen DENG1,2(),Xudong SHAO2,*(),Banfu YAN3,Minghong QIU2,4
1. College of Water Resources and Civil Engineering, Hunan Agricultural University, Changsha 410125, China
2. College of Civil Engineering, Hunan University, Changsha 410082, China
3. School of Civil Engineering and Architectural, Guangxi University, Nanning 530004, China
4. Department of Civil Engineering, University of Hong Kong, Hong Kong 999077, China
 全文: PDF(5099 KB)   HTML
摘要：

对适用于轻型组合桥梁负弯矩区的T形横向接缝抗弯性能进行试验研究，对负弯矩加载接缝的全过程进行理论分析，对接缝设计参数进行讨论. 研究结果表明，随着荷载的增大，试件的主裂缝出现在连续浇筑的UHPC接缝界面和加载点下方的面板表面，试件中部未发现明显裂纹，UHPC接缝界面的可视初裂强度可以满足实桥设计荷载. 对试验梁进行分析，提出接缝最大裂缝宽度、考虑UHPC拉伸刚度效应的设计弯矩和挠度计算公式，获得每阶段承载力的计算式，预测结果与试验结果吻合良好. 通过参数讨论和计算可知，跨度L = 20~50 m的轻型组合桥梁T形接缝上部加长长度可以设置为0.1L.
关键词： 超高性能混凝土(UHPC);  UHPC接缝;  抗弯性能试验;  裂缝宽度计算式;  挠度计算式;  极限承载力计算式    
Abstract:

Experimental research was conducted on the flexural performance of T-shaped transverse joints suitable for the negative bending moment area of lightweight composite bridges. A theoretical analysis of the entire process of applying negative bending moments was conducted, and the design parameters for the joint were discussed. Results show that the primary crack in the specimens appears at the interface of the continuously cast UHPC joint and the panel surface below the loading point as the load increases. No significant cracks were observed in the middle of the specimens, and the visual initial crack strength of the UHPC joint interface can meet the design loads of real bridges. An analysis of the test beam was conducted, and formulas for calculating the maximum crack width of the joint, the design bending moment considering the effect of UHPC tensile stiffness, and deflection were proposed. Formulas for calculating the bearing capacity at each stage were obtained, and the predicted results accorded well with the experimental results. Parameter discussions and calculations show that the upper extended length of T-shaped joint in lightweight composite bridges with spans ranging from 20 m to 50 m can be set to 0.1 times of spans.
Key words: ultra high performance concrete (UHPC)    UHPC joint    bending resistance test    calculation formula of crack width    calculation formula of deflection    calculation formula of ultimate bearing capacity
收稿日期: 2023-02-23 出版日期: 2024-01-23
CLC:  U 443  
基金资助: 国家自然科学基金资助项目 (52108211)；湖南省自然科学基金资助项目 (2022JJ40186)；湖南省教育厅资助项目 (21B0188)
通讯作者: 邵旭东     E-mail: dengsw@hunau.edu.cn;shaoxd@hnu.edu.cn
作者简介: 邓舒文（1988—），女，博士后，从事超高性能混凝土桥梁结构的研究. orcid.org/0009-0008-5087-3834. E-mail：dengsw@hunau.edu.cn
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
作者相关文章　　
邓舒文
邵旭东
晏班夫
邱明红

引用本文:

邓舒文,邵旭东,晏班夫,邱明红. 轻型组合桥梁负弯矩区接缝抗弯性能试验[J]. 浙江大学学报(工学版), 2024, 58(2): 399-412.

Shuwen DENG,Xudong SHAO,Banfu YAN,Minghong QIU. Experiment on flexure behavior of joint in negative moment area of lightweight composite bridge. Journal of ZheJiang University (Engineering Science), 2024, 58(2): 399-412.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2024.02.018    或    https://www.zjujournals.com/eng/CN/Y2024/V58/I2/399

图 1  麻浦行车天桥
图 2  麻浦行车天桥标准横断面
图 3  现浇负弯矩区接缝结构的示意图
图 4  经济性能的比较方案
桥梁方案方案I方案II方案III
V/m3m/kg价格/
(元·m?2)		V/m3m/kg价格/
(元·m?2) 		V/m3m/kg价格/
(元·m?2)
上部结构C50或UHPC0.44—13200.28—8400.126—1130
预应力钢筋—18.3275——————
钢梁————1901900—1501500
铺装层0.11—200——————
运输吊装费—1200180—920140—50075
下部结构桥墩、盖梁和系梁0.23—505 0.18—400 0.18—400
表 1  不同桥梁方案的经济性能比较
项目应力/MPa位置
UHPC面板11.69墩顶
UHPC面板?20.75边跨跨中
UHPC面板5.28接缝界面
工字钢186.75边跨跨中下缘
工字钢?95.2墩顶钢板下缘
表 2  桥梁使用阶段的设计应力
图 5  轻型组合桥梁负弯矩区抗弯性能试验模型的示意图
图 6  先浇UHPC面板表面凿毛
材料类型养护方案fc/MPafcf/MPaE/GPa
预制段UHPC蒸汽养护162.3828.7449.03
现浇段UHPC自然养护135.0132.1945.82
表 3  UHPC材料的力学性能
图 7  试验量测装置布置图示
图 8  试验梁的荷载-跨中位移曲线
图 9  试件接缝界面的裂缝发展
图 10  不同基体上的裂缝形态
图 11  UHPC面板表面的应变发展
图 12  钢结构的应变发展曲线
图 13  应变沿试件高度方向的发展曲线
图 14  弯矩-曲率试验值与理论值的对比
图 15  计算截面的示意图
截面编号Pcr/ kNσcr/ MPa
截面1 (UHPC基体)424.515.96
截面2 (接缝界面)196.67.39
截面3 (跨中，墩顶)1033.919.02
截面4 (接缝界面)143.55.40
截面5 (UHPC基体)336.512.66
表 4  关键截面的名义开裂应力
图 16  试件加载过程的阶段细分图
图 17  UHPC表面裂缝宽度理论与预测值的对比
图 18  典型截面的内力计算示意图
图 19  典型截面的内力计算示意图
图 20  各阶段跨中位移计算值与试验结果的对比
图 21  负弯矩区弯矩包络图
L/mh/mhs/mhl/m单侧台阶长/m
200.880.75~0.620.0281.625
301.281.15~1.020.0282.92
401.931.80~1.670.0382.96
502.632.50~2.370.0383.51
表 5  20~50 m钢-UHPC组合桥梁初步设计截面主尺寸
图 22  20~50 m钢-UHPC组合桥梁初步设计截面
1 张子飏, 邓开来, 徐腾飞 预制装配式混凝土桥梁结构2019年度研究进展[J]. 土木与环境工程学报: 中英文, 2020, 42 (5): 183- 191
ZHANG Ziyang, DENG Kailai, XU Tengfei State-of-the-art review of prefabricated concrete bridge structures in 2019[J]. Journal of Civil and Environmental Engineering, 2020, 42 (5): 183- 191
2 董志强, 吴刚 FRP 筋增强混凝土结构耐久性能研究进展[J]. 土木工程学报, 2019, 52 (10): 1- 19
DONG Zhiqiang, WU Gang Research progress on durability of FRP bars reinforced concrete structures[J]. China Civil Engineering Journal, 2019, 52 (10): 1- 19
3 王爱国, 郑毅, 张祖华, 等. 碱激发材料与普通硅酸盐水泥和混凝土的耐久性能比较[J], 工程(英文), 2020, 6(6): 695-706, 787-799.
WANG Aiguo , ZHENG Yi, ZHANG Zuhua, et al. The durability of alkali-activated materials in comparison with ordinary portland cements and concretes: a review [J]. Engineering, 2020, 6(6): 695-706, 787-799.
4 赵明, 何湘峰, 邱明红, 等 全预制钢-UHPC轻型组合梁在中小跨径桥梁中的设计与应用研究[J]. 公路工程, 2019, 44 (5): 4
ZHAO Ming, HE Xiangfeng, QIU Minghong, et al Research on design and application of fully prefabricated steel-UHPC lightweight composite girder in medium and small span girder bridge[J]. Highway Engineering, 2019, 44 (5): 4
5 QI J, CHENG Z, WANG J, et al Full-scale testing on the flexural behavior of an innovative dovetail UHPC joint of composite bridges[J]. Structural Engineering and Mechanics, 2020, 75 (1): 49- 57
6 LU K, XU Q, LI W, et al Fatigue performance of UHPC bridge deck system with field-cast dovetail joint[J]. Engineering Structures, 2021, 237: 112108
doi: 10.1016/j.engstruct.2021.112108
7 PAN W, FAN J, NIE J, et al Experimental study on tensile behavior of wet joints in a prefabricated composite deck system composed of orthotropic steel deck and ultrathin reactive-powder concrete layer[J]. Journal of Bridge Engineering, 2016, 21 (10): 04016064
doi: 10.1061/(ASCE)BE.1943-5592.0000935
8 邵旭东, 陈斌, 周绪红 钢-RPC轻型组合桥面结构湿接头弯曲试验[J]. 中国公路学报, 2017, 30 (3): 210- 217
SHAO Xudong, CHEN Bin, ZHOU Xuhong Experiment on bending behavior of wet joints in light-weighted composite deck system composed of steel and RPC layer[J]. China Journal of Highway and Transport, 2017, 30 (3): 210- 217
9 HE S, 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
doi: 10.1061/(ASCE)BE.1943-5592.0001379
10 JIA J, REN Z, BAI Y, et al Tensile behavior of UHPC wet joints for precast bridge deck panels[J]. Engineering Structures, 2023, 282: 115826
doi: 10.1016/j.engstruct.2023.115826
11 XIAO J, GUO L, NIE J, et al. Flexural behavior of wet joints in steel-UHPC composite deck slabs under hogging moment [J]. Engineering Structures, 2022, 252: 113636.
12 QI J, BAO Y, WANG J, et al Flexural behavior of an innovative dovetail UHPC joint in composite bridges under negative bending moment[J]. Engineering Structures, 2019, 200: 109716
doi: 10.1016/j.engstruct.2019.109716
13 DU L, QI J, CHENG Z, et al Finite element modeling of UHPC slabs with dovetail joints and steel wire mesh using an innovative interfacial treating method[J]. Structures, 2022, 37: 745- 755
doi: 10.1016/j.istruc.2022.01.057
14 ZHAO C, WANG K, XU R, et al Development of fully prefabricated steel-UHPC composite deck system[J]. Journal of Structural Engineering, 2019, 145 (7): 04019051
doi: 10.1061/(ASCE)ST.1943-541X.0002338
15 CHITTY F, FREEMAN C, GARBER D Joint design optimization for accelerated construction of slab beam bridges[J]. Journal of Bridge Engineering, 2020, 25 (7): 04020029
doi: 10.1061/(ASCE)BE.1943-5592.0001561
16 ABOKIFA M, MOUSTAFA M Experimental behavior of precast bridge deck systems with non-proprietary UHPC transverse field joints[J]. Materials, 2021, 14 (22): 6964
doi: 10.3390/ma14226964
17 DENG E, ZHANG Z, ZHANG C, et al Experimental study on flexural behavior of UHPC wet joint in prefabricated multi-girder bridge[J]. Engineering Structures, 2023, 275: 115314
doi: 10.1016/j.engstruct.2022.115314
18 GRAYBEAL B. Design and construction of field-cast UHPC connections [R]. Washington, DC: Federal Highway Administration, 2014.
19 HE Z, MA Z, CHAPMAN C, et al Longitudinal joints with accelerated construction features in decked bulb-tee girder bridges: strut-and-tie model and design guidelines[J]. Journal of Bridge Engineering, 2012, 18 (5): 372- 379
20 JIANG H, HU Z, FENG J, et al Flexural behavior of UHPC-filled longitudinal connections with non-contacting lap-spliced reinforcements for narrow joint width[J]. Structures, 2022, 39: 620- 636
doi: 10.1016/j.istruc.2022.03.017
21 QIU M, SHAO X, YAN B, et al. Flexural behavior of UHPC joints for precast UHPC deck slabs [J]. Engineering Structures, 2022, 251 (part A): 113422.
22 SHAH Y, HU Z, YIN B, et al Flexural performance analysis of UHPC wet joint of prefabricated bridge deck[J]. Arabian Journal for Science and Engineering, 2021, 46 (11): 11253- 11266
doi: 10.1007/s13369-021-05735-z
23 ZHU Y, ZHANG Y, HUSSEIN H, et al Flexural study on UHPC–steel composite beams with joints under negative bending moment[J]. Journal of Bridge Engineering, 2020, 25 (10): 04020084
doi: 10.1061/(ASCE)BE.1943-5592.0001619
24 TAN Y, LV L, ZHANG D, et al Fatigue performance of a simply-supported T-beam UHPC bridge deck variable section joint structure[J]. Engineering Structures, 2022, 269: 114758
doi: 10.1016/j.engstruct.2022.114758
25 邵旭东, 胡伟业, 邱明红, 等. 组合梁负弯矩区UHPC接缝抗弯性能试验 [J]. 中国公路学报, 2021, 34(8): 246-260.
SHAO Xudong, HU Weiye, QIU Minghong, et al. Experiment on flexural behavior of UHPC joint in negative moment area of composite bridges [J]. China Journal of Highway and Transport, 2021, 34(8): 246-260.
26 AFGC-SETRA. National addition to Eurocode 2 — design of concrete structures: specific rules for ultra-high performance fibre-reinforced concrete (UHPFRC) [S]. Paris: French Standard Institute, 2016.
27 中交公路规划设计院有限公司. 公路钢结构桥梁设计规范 [M]. 北京: 人民交通出版社股份有限公司, 2015.
28 张哲, 邵旭东, 李文光, 等 超高性能混凝土轴拉性能试验[J]. 中国公路学报, 2015, 28 (8): 50- 58
ZHANG Zhe, SHAO Xudong, LI Wenguang, et al Axial tensile behavior test of ultra high performance concrete[J]. China Journal of Highway and Transport, 2015, 28 (8): 50- 58
29 PIERRE R, MARCEL C Composition of reactive powder concretes[J]. Cement and Concrete Research, 1995, 25 (7): 1501- 1511
doi: 10.1016/0008-8846(95)00144-2
30 GRAYBEAL B, BRÜHWILER E, KIM B, et al International perspective on UHPC in bridge engineering[J]. Journal of Bridge Engineering, 2020, 25 (11): 04020094
doi: 10.1061/(ASCE)BE.1943-5592.0001630
31 中华人民共和国国家质量监督检验检疫总局. 活性粉末混凝土[S]. 北京: 中国标准出版社, 2015.
32 LUO J, SHAO X, FAN W, et al Flexural cracking behavior and crack width predictions of composite (steel + UHPC) lightweight deck system[J]. Engineering Structures, 2019, 194: 120- 137
doi: 10.1016/j.engstruct.2019.05.018
33 LUO J, SHAO X, CAO J, et al Transverse bending behavior of the steel-UHPC lightweight composite deck: Orthogonal test and analysis[J]. Journal of Constructional Steel Research, 2019, 162: 105708
doi: 10.1016/j.jcsr.2019.105708
34 中华人民共和国住房和城乡建设部. 混凝土结构设计规范: GB 50010—2010[S]. 北京: 中国建筑工业出版社, 2010.
35 陈斌. 正交异性钢-UHPC轻型组合桥面结构湿接头抗弯性能研究与试验[D]. 长沙: 湖南大学, 2019.
CHEN Bin. Research and experiment on bending behavior of wet joints in lightweight composite deck system composed of orthotropic steel and UHPC layer [D]. Changsha: Hunan University, 2019.
36 张彦玲, 李运生, 樊健生 钢混凝土连续组合梁的刚度计算方法[J]. 中南大学学报: 自然科学版, 2013, 44 (8): 3520- 3526
ZHANG Yanling, LI Yunsheng, FAN Jiansheng Stiffness calculation method for steel-concrete continuous composite beams[J]. Journal of Central South University: Science and Technology, 2013, 44 (8): 3520- 3526
37 Design of concrete structures: CEB-FIP-Model-Code 1990 [S]. London: British Standard Institution, 1993.
[1] 邓明科,靳梦娜,郭莉英,马福栋,刘华政. 超高性能混凝土连接装配式柱抗震性能试验研究[J]. 浙江大学学报(工学版), 2022, 56(10): 1995-2006.
[2] 罗军,邵旭东,曹君辉,樊伟,裴必达. 钢-超高性能混凝土组合板开裂荷载正交试验及计算方法[J]. 浙江大学学报(工学版), 2020, 54(5): 909-920.
[3] 叶居东, 杨贞军, 刘国华, 姚勇. 超高性能混凝土-螺旋钢纤维拉拔力的解析解及实验验证[J]. 浙江大学学报(工学版), 2018, 52(10): 1911-1918.