钢筋混凝土拱桥加固施工次序方案及效果评价

doi:10.3969/j.issn.1674-0696.2024.06.02

重庆交通大学学报（自然科学版） ›› 2024, Vol. 43 ›› Issue (6): 8-15.DOI: 10.3969/j.issn.1674-0696.2024.06.02

• 交通基础设施工程 • 上一篇

钢筋混凝土拱桥加固施工次序方案及效果评价

徐略勤1,2，杨忠友1，周水兴1,2，岳克锋1，沈正璇1

(1.重庆交通大学土木工程学院，重庆 400074；2.重庆交通大学山区桥梁及隧道工程国家重点实验室，重庆 400074)

收稿日期:2023-07-31 修回日期:2024-01-11 发布日期:2024-06-24
作者简介:徐略勤（1983—），男，江西上饶人，教授，博士，主要从事桥梁工程方面的研究。E-mail：xulueqin@163.com 通信作者：杨忠友（2000—），男，重庆人，硕士研究生，主要从事桥梁工程方面的研究。E-mail：yangzy3377@163.com
基金资助:
重庆英才创新领军人才计划项目(cstc2022ycjh-bgzxm0133)；重庆市教委科技研究计划项目(KJQN201900737)

Schemes and Effect Evaluation of Retrofit Construction Sequences for Reinforced Concrete Arch Bridge

XU Lueqin1,2, YANG Zhongyou1, ZHOU Shuixing1,2, YUE Kefeng1, SHEN Zhengxuan1

(1. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China; 2. State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, China)

Received:2023-07-31 Revised:2024-01-11 Published:2024-06-24

摘要/Abstract

摘要： 为研究钢筋混凝土拱桥最优的加固施工次序，以一座在役4跨箱形拱桥的加固方案为背景，设计了3组针对性的加固方案，并对不同拆除加固施工次序下的主拱圈力学性能进行了分析；采用恒载应力变化率(αD)和荷载效应变化率(αN)评价了施工中拱圈的应力变化规律及加固后原拱圈的荷载效应。研究结果表明：拱上结构的拆建次序对加固后主拱圈的力学性能影响较小，但对加固过程中主拱圈的受力状态影响较大；拱顶对称拆除时αD＜0，结构处于“卸载”状态，有利于拱桥施工中的受力； αN随着拱上结构恒载减小而增大，且增速减缓，故加固层材料利用率也随拱上结构恒载减小而增大，且增幅变缓；αN越大，则加固效果越好。

关键词: 桥梁工程；钢筋混凝土拱桥；恒载应力变化率；荷载效应变化率；加固施工次序方案；效果评价

Abstract: In order to study the optimal reinforcement construction sequence of reinforced concrete arch bridge, three sets of targeted reinforcement schemes were designed against the background of the reinforcement scheme design of a four-span box-shaped arch bridge in service, and the mechanical properties of the main arch ring under different demolition and reinforcement construction sequences were analyzed. The stress change law of the arch ring during construction and the load effect of the original arch ring after reinforcement were evaluated by using the change rate of dead-load stress (αD) and the change rate of load effect (αN). The research results show that the demolition and retrofit sequence of the arch building has little influence on the mechanical properties of the main arch ring after reinforcement, but it has a great influence on the stress state of the main arch ring during the reinforcement process. When the arch vault is symmetrically demolished αD＜0, the structure is in the state of "unloaded", which is conducive to the stress of the arch bridge in the construction process. The change rate of load effect (αN) increases with the decrease of the dead load of the arch structure and the growth rate slows down. Therefore, the utilization rate of the reinforcement layer material also increases with the decrease of the dead load of the arch structure, and the growth rate slows down. The larger the αN, the better the reinforcement effect.

Key words: bridge engineering; reinforced concrete arch bridge; change rate of dead-load stress; change rate of load effect; schemes of retrofit construction sequences; effect evaluation

中图分类号:

U445.7+2

徐略勤1,2，杨忠友1，周水兴1,2，岳克锋1，沈正璇1. 钢筋混凝土拱桥加固施工次序方案及效果评价[J]. 重庆交通大学学报（自然科学版）, 2024, 43(6): 8-15.

XU Lueqin1,2, YANG Zhongyou1, ZHOU Shuixing1,2, YUE Kefeng1, SHEN Zhengxuan1. Schemes and Effect Evaluation of Retrofit Construction Sequences for Reinforced Concrete Arch Bridge[J]. Journal of Chongqing Jiaotong University(Natural Science), 2024, 43(6): 8-15.

参考文献

［1］陈宝春, 刘君平. 世界拱桥建设与技术发展综述［J］. 交通运输工程学报, 2020, 20(1): 27-41.
CHEN Baochun, LIU Junping. Review of construction and technology development of arch bridges in the world［J］.Journal of Traffic and Transportation Engineering, 2020, 20(1): 27-41.
［2］谢肖礼, 李院腾, 庞木林. 上承式拱桥新型加固改造方法及试验验证［J］. 石河子大学学报(自然科学版), 2023, 41(1): 57-64.
XIE Xiaoli, LI Yuanteng, PANG Mulin. A new reinforcement and reconstruction method and experimental verification for deck arch bridge［J］.Journal of Shihezi University (Natural Science), 2023, 41(1): 57-64.
［3］张淼, 钱永久, 张方, 等. 基于增大截面法的混凝土加固石拱桥空间受力性能试验分析［J］. 吉林大学学报(工学版), 2020, 50(1): 210-215.
ZHANG Miao, QIAN Yongjiu, ZHANG Fang, et al. Experimental analysis of spatial force performance of concrete-reinforced stone arch bridge based on enlarged section method［J］.Journal of Jilin University (Engineering and Technology Edition), 2020, 50(1): 210-215.
［4］ AL-ROUSAN R, AL-SARAIREH S. Impact of anchored holes technique on behavior of reinforced concrete beams strengthened with different CFRP sheet lengths and widths［J］.Case Studies in Construction Materials, 2020, 13: e00405.
［5］ HUANG Jie, SHI Jun, XIAO Hengheng, et al. Stressing state analysis of reinforcement concrete beams strengthened with carbon fiber reinforced plastic［J］.International Journal of Concrete Structures and Materials, 2020, 14(1): 38.
［6］苏庆田, 王思哲, 薛智波, 等. 既有铆接钢桁梁桥拓宽改建时的主桁构件加固设计［J］. 桥梁建设, 2019, 49(4): 75-80.
SU Qingtian, WANG Sizhe, XUE Zhibo, et al. Reinforcement design of main truss members of existing riveted steel truss bridge in a widening and reconstruction project［J］.Bridge Construction, 2019, 49(4): 75-80.
［7］ THERMOU G E, PANTAZOPOULOU S J, ELNASHAI A S. Flexural behavior of brittle RC members rehabilitated with concrete jacketing［J］.Journal of Structural Engineering, 2007, 133(10): 1373-1384.
［8］ DUAN Ning, ZHANG Jiwen, CHENG Jun. Simulation research on continuous concrete beams reinforced with external prestressed CFRP tendons［J］. Materials, 2022, 15(16): 5697.
［9］周建庭, 邓智, 袁瑞, 等. 劣化拱轴线大跨石拱桥拱上建筑调载工序研究［J］. 重庆交通大学学报(自然科学版), 2010, 29(1): 16-19.
ZHOU Jianting, DENG Zhi, YUAN Rui, et al. Adjusting load process of spandrel construction for large-span stone arch bridge with deteriorated arch axis［J］.Journal of Chongqing Jiaotong University (Natural Science), 2010, 29(1): 16-19.
［10］刘思孟, 张立永. 大跨径圬工拱桥合理加固次序设计方法［J］. 重庆交通大学学报(自然科学版), 2013, 32(6): 1148-1152.
LIU Simeng, ZHANG Liyong. Reasonably strengthening sequence design method for long-span masonry arch bridge［J］.Journal of Chongqing Jiaotong University (Natural Science), 2013, 32(6): 1148-1152.
［11］刘思孟, 张立永. 圬工拱桥加固与加载程序优化方法［J］. 桥梁建设, 2013, 43(6): 88-93.
LIU Simeng, ZHANG Liyong. Optimizing method for strengthening and loading program of masonry arch bridge［J］.Bridge Construction, 2013, 43(6): 88-93.
［12］周磊, 韩振中, 周建庭. 圬工拱桥加固效果合理评价模式［J］. 公路, 2014(12): 81-85.
ZHOU Lei, HAN Zhenzhong, ZHOU Jianting. Reasonable evaluation model for masonry arch reinforcement effect［J］.Highway, 2014(12): 81-85.
［13］刘杰, 王解军. 圬工拱桥上部结构合理拆除方案研究［J］. 公路工程, 2013, 38(4): 254-256.
LIU Jie, WANG Jiejun. Research of the reasonable dismantled plan of superstructure of masonry arch bridge［J］.Highway Engineering, 2013, 38(4): 254-256.
［14］刘思孟，周建庭，李建高，等. 桥梁加固增强效果评价体系—强度指标研究［C］// 中国土木工程学会桥梁及结构工程分会. 第十七届全国桥梁学术会议论文集：下册.北京：人民交通出版社，2006: 244-250.
LIU Simeng, ZHOU Jianting, LI Jiangao, et al.Evaluation system of bridge reinforcement enhancement effect — Research on strength index ［C］ // Bridge and Structural Engineering Branch of China Civil Engineering Society. Proceedings of the 17th National Conference on Bridges: Volume II. Beijing: China Communications Press, 2006: 244-250.
［15］中华人民共和国交通部. 公路圬工桥涵设计规范: JTG D 61—2005［S］. 北京: 人民交通出版社, 2005.
Ministry of Transport of the Peoples Republic of China.Code for Design of Highway Masonry Bridges and Culverts: JTG D 61—2005［S］. Beijing: China Communications Press, 2005.

[1]	晏国泰，谢金齐，黄镇，陈新林. 亚热带区环氧砂浆与混凝土黏结性能试验研究[J]. 重庆交通大学学报（自然科学版）, 2014, 33(5): 47-50.
[2]	刘思孟, 张立永. 大跨径均工拱桥合理加固次序设计方法[J]. 重庆交通大学学报（自然科学版）, 2013, 32(6): 1148-1152.
[3]	刘思孟, 张立永. 大跨径均工拱桥合理加固次序设计方法[J]. 重庆交通大学学报（自然科学版）, 2013, 32(6): 1148-1152.
[4]	周志祥，毛久群，张江涛. 一种石砌拱上建筑结构加固新方法[J]. 重庆交通大学学报（自然科学版）, 2012, 31(1): 29-32.
[5]	谭勇，周建庭，沈小俊，郝神，谭隆友，周勇. 常用拱式桥梁加固技术及适用特点分析[J]. 重庆交通大学学报（自然科学版）, 2007, 26(4): 29-31.
[6]	张会礼，蒙云. 组合方法加固璧山人民桥的设计与实践[J]. 重庆交通大学学报（自然科学版）, 2007, 26(1): 30-33.
[7]	罗娜，罗涛，封捍东. 大旺大桥维修加固措施与工艺[J]. 重庆交通大学学报（自然科学版）, 2007, 26(1): 34-39.

钢筋混凝土拱桥加固施工次序方案及效果评价

Schemes and Effect Evaluation of Retrofit Construction Sequences for Reinforced Concrete Arch Bridge

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 7

编辑推荐

Metrics