|Table of Contents|

Study of coupled forces between bracket and poured structure in layered casting of box girder(PDF)

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

Issue:
2025年05期
Page:
66-73
Research Field:
建筑结构
Publishing date:

Info

Title:
Study of coupled forces between bracket and poured structure in layered casting of box girder
Author(s):
XU Hongsheng1;  GUO Fen1;  WEI Chao2;  FAN Xichao2;  LUO Haiwei1
(1. School of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, Hunan, China; 2. Guizhou Highway Engineering Group Third Engineering Co., Guiyang 550008, Guizhou, China)
Keywords:
cast-in-place box girder;  layered casting;  Bailey beam combination bracket;  coupled force;  finite element simulation;  stage construction
PACS:
U445
DOI:
10.19815/j.jace.2023.12088
Abstract:
In order to study the coupled forces between the bracket and the poured structure in the layered casting of small and medium span continuous box girders, combining the field testing and finite element simulation analysis, a stage construction simulation analysis method considering the time-dependent properties of concrete materials was proposed. The stress changes of the bracket and the poured structure during the pouring of the second layer of concrete of the box girder were analyzed and tested. The comparison between the measured data of construction and the results of finite element simulation analysis was carried. The results show that the first layer of the poured structure will bear a large amount of stress due to the weight of some of the second layer of poured concrete, and it is necessary to calculate the structural safety of the poured structure in the process of the construction of the poured structure in layers. Compared with the first overall pouring, the weight of the second poured concrete borne by the Bailey beam support and the steel pipe column can be effectively reduced when the concrete is poured in layers, and the effect on reducing the stress of the Bailey beam is greater than that of the steel pipe column. The poured structure can share 52.98%-84.48% of the second layer pouring load for the Bailey beam support, and share 15.65%-29.24% of the second layer pouring load for the steel pipe column. Therefore, the load value of the support should be optimized in the design of the support. The proposed analysis method for coupling force between bracket and the poured structure has reliability.

References:

[1] 光 明,姚 斐,王静华.钢管少支架在山区高墩现浇箱梁中的应用[J].施工技术,2015,44(21):123-125,129.
GUANG Ming, YAO Fei, WANG Jinghua. Application of scaffolds with less steel tube for cast-in-situ box girder with high piers in mountain area[J]. Construction Technology, 2015, 44(21): 123-125, 129.
[2]唐星宇,郭增伟.曲线匝道箱梁桥现浇施工中支架布置形式分析[J].科学技术与工程,2022,22(2):781-787.
TANG Xingyu, GUO Zengwei. Analysis of scaffold arrangement in cast-in-situ construction of curved ramp box girder bridge[J].Science Technology and Engineering, 2022, 22(2): 781-787.
[3]王 肖,钟春松,袁 瑞.新型梁柱式现浇支架模板系统的设计与施工[J].公路,2018,63(7):44-48.
WANG Xiao, ZHONG Chunsong, YUAN Rui. Design and construction of the bracket formwork system of the new type cast-in-situ beam-column[J]. Highway, 2018, 63(7): 44-48.
[4]孙镇国,贾兵团,仝增毅.清水河大桥索塔下横梁的超高支架设计与安装[J].公路,2015,60(8):93-97.
SUN Zhenguo, JIA Bingtuan, TONG Zengyi. Design and installation of ultra-high bracket for lower beam of Qingshui River Bridge cable tower[J]. Highway, 2015, 60(8): 93-97.
[5]崔昌洪,韦健江.钢管贝雷梁柱式支架在高墩大跨现浇箱梁施工中的运用[J].公路,2005,50(10):10-16.
CUI Changhong, WEI Jianjiang. Application of steel tube Bailey beam-column support in construction of cast-in-place box girder with high pier and long span[J]. Highway, 2005, 50(10): 10-16.
[6]阮大伟,陈 蛟,谢开仲,等.PC连续箱梁施工阶段裂缝检测及成因分析[J].公路,2020,65(3):132-136.
RUAN Dawei, CHEN Jiao, XIE Kaizhong, et al. Crack detection and cause analysis of PC continuous box girder in construction stage[J]. Highway, 2020, 65(3): 132-136.
[7]王建强,吕忠达,赵 卓,等.预应力混凝土连续箱梁顶板早期裂缝控制研究[J].铁道工程学报,2019,36(9):43-48.
WANG Jianqiang, LV Zhongda, ZHAO Zhuo, et al. Control of the early cracks in the top slab of the prestressed concrete continuous box girder[J]. Journal of Railway Engineering Society, 2019, 36(9): 43-48.
[8]XU L. Application study on stress optimization design of freeway PC cast-in-situ continuous beam bridge[J]. IOP Conference Series: Earth and Environmental Science, 2019, 242(6): 062039.
[9]张东山,光 明.现浇箱梁大跨度钢管贝雷与碗扣组合支架设计与分析[J].施工技术,2016,45(17):76-78.
ZHANG Dongshan, GUANG Ming. Design and analysis of large-span combination support with steel pipe bailey and bowl for cast-in-place box girder[J]. Construction Technology, 2016, 45(17): 76-78.
[10]黄忠黎.小半径圆曲线弯桥不良地段现浇连续箱梁支架稳定性的影响因素及应对措施[J].公路交通科技(应用技术版),2015(7):245-246.
HUANG Zhongli. Influencing factors and countermeasures of stability of cast-in-place continuous box girder bracket in bad section of small radius circular curved bridge[J]. Journal of Highway and Transportation Science and Technology(Application Technology Edition), 2015(7): 245-246.
[11]吴水根,吴晓亮.现浇连续梁跨河道的支架设计与施工[J].结构工程师,2015,31(2):207-212.
WU Shuigen, WU Xiaoliang. Design and construction of the supporting system for the cast-in-place cross river continuous beam[J]. Structural Engineers, 2015, 31(2): 207-212.
[12]王一帆,杨 铮,余晓琳,等.潮州大桥大体积0号块多次浇筑临时支架力学性能应用研究[J].科学技术与工程,2016,16(36):236-242.
WANG Yifan, YANG Zheng, YU Xiaolin, et al. Application research on temporary support mechanical properties of the large volume 0# block repeatedly pouring in Chaozhou bridge[J]. Science Technology and Engineering, 2016, 16(36): 236-242.
[13]彭亮英.大跨连续梁0号段分层施工支撑结构受力研究[J].铁道建筑技术,2015(4):36-40.
PENG Liangying. Study on force of supporting structure in section No.0 of large-span continuous-beam under construction in layers[J]. Railway Construction Technology, 2015(4): 36-40.
[14]徐登云,陈太雷.索塔下横梁分层浇筑施工过程计算与分析[J].现代交通技术,2022,19(2):35-38,54.
XU Dengyun, CHEN Tailei. Calculation and analysis of layered pouring construction process of cross beam under cable tower[J]. Modern Transportation Technology, 2022, 19(2): 35-38, 54.
[15]PUENTE I, AZKUNE M, INSAUSTI A. Shore-slab interaction in multistory reinforced concrete buildings during construction: an experimental approach[J]. Engineering Structures, 2007, 29(5): 731-741.
[16]ALVARADO Y A, CALDERÓN P A, ADAM J M, et al. An experimental study into the evolution of loads on shores and slabs during construction of multistory buildings using partial striking[J]. Engineering Structures, 2009, 31(9): 2132-2140.
[17]ALVARADO Y A, CALDERÓN P A, GASCH I, et al. A numerical study into the evolution of loads on shores and slabs during construction of multistorey buildings.Comparison of partial striking with other techniques[J]. Engineering Structures, 2010, 32(10): 3093-3102.
[18]郭斌强,王宗林,高庆飞,等.大跨径预应力混凝土连续梁桥墩顶现浇段分层浇筑[J].科学技术与工程,2012,12(16): 4042-4046.
GUO Binqiang, WANG Zonglin, GAO Qingfei, et al. Layered pouring in top-pier section of long-span PC continuous bridge[J]. Science Technology and Engineering, 2012, 12(16): 4042-4046.
[19]李 凯.大跨桥梁索塔横梁与施工支架耦合受力分析[J].湖南交通科技,2022,48(2):90-95.
LI Kai. Coupling stress analysis of cable tower beam and construction support of long-span bridge[J]. Hunan Communication Science and Technology, 2022, 48(2): 90-95.
[20]刘国坤,颜东煌,王文熙,等.预应力混凝土斜拉桥箱梁强扭损伤模拟及修复后受力性能试验[J]. 中国公路学报,2025,38(4):145-157.
LIU Guokun, YAN Donghuang, WANG Wenxi, et al. Experimental study on bearing capacity of box girders of prestressed concrete cable-stayed bridges subjected to strong torsional damage[J]. China Journal of Highway and Transport, 2025, 38(4): 145-157.
[21]杨美良,李振华,钟 扬,等.混凝土箱梁桥0#1#块施工托架安全性分析[J].长安大学学报(自然科学版),2014,34(1):64-69.
YANG Meiliang, LI Zhenhua, ZHONG Yang, et al. Safety analysis of bracket structure for main beam 0#1# segment construction of concrete box girder bridge[J]. Journal of Chang'an University(Natural Science Edition), 2014, 34(1): 64-69.
[22]CEB-FIP model code 1990: CEB-90[S]. Brussels: Committee Euro-Interational Du Beton, 1991.

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Last Update: 2025-09-25