跨海大桥U-RC组合桥墩设计

林上顺; 黄卿维; 陈宝春; 陈扬弘

跨海大桥U-RC组合桥墩设计

林上顺^{1, 2,},
黄卿维^2, ,,
陈宝春²,
陈扬弘²

1.
福建工程学院福建省土木工程新技术与信息化重点实验室, 福建福州 350118
2.
福州大学土木工程学院, 福建福州 350108

基金项目:

国家自然科学基金项目 U1305245

详细信息

作者简介:
林上顺(1972-), 男, 福建永泰人, 福建工程学院副教授, 工学博士, 从事桥梁与结构工程研究

通讯作者:
黄卿维(1982-), 男, 福建惠安人, 福州大学副研究员, 工学博士

中图分类号: U443.22
计量
- 文章访问数: 819
- HTML全文浏览量: 191
- PDF下载量: 900
- 被引次数: 0
出版历程
- 收稿日期: 2017-03-22
- 刊出日期: 2017-08-25

Design of U-RC composite pier of sea-crossing bridge

1.
Fujian Provincial Key Laboratory of Advanced Technology and Information in Civil Engineering, Fujian University of Technology, Fuzhou 350118, Fujian, China
2.
School of Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China

More Information

Author Bio:
LIN Shang-shun(1972-), male, associate professor, PhD, +86-591-22863252, midas2008@126.com

HUANG Qing-wei(1982-), male, associate researcher, PhD, +86-591-22865349, 9380226@qq.com

摘要

摘要: 为解决跨海桥梁桥墩施工与防腐问题, 提出了超高性能混凝土(UHPC) -钢筋混凝土(RC) 组合桥墩新结构, 简称U-RC组合桥墩, 以UHPC外筒作为永久模柱, 现浇内核钢筋混凝土; 以平潭海峡大桥为工程背景, 开展了U-RC组合桥墩的结构设计与计算, 并与原设计方案的工程量和造价进行了比较; 进行了3根内核RC柱、3根UHPC模柱、3根U-RC组合桥墩的极限承载力试验, 测量了试件的混凝土纵向应变与横向应变, 研究了试件的破坏形态与裂缝发展过程, 得到了试件的极限承载力试验值, 分析了U-RC组合桥墩的受力性能。研究结果表明: U-RC组合桥墩的承载力大于设计内力, 满足现行规范要求; 采用UHPC模柱取代钢模板的桥墩设计方案, 可节约钢材约2 410t, 工程造价节省约30%;3根UHPC圆筒的极限荷载均值为1 342kN, 3根RC柱的极限荷载均值为1 370kN, 二者之和小于3根U-RC组合桥墩极限荷载均值3 033kN, 说明UHPC模柱对核心混凝土有一定的套箍作用, 采用简单迭加方法计算U-RC组合桥墩的轴压极限承载力是可行且偏保守的; 在轴压试验中, U-RC组合桥墩的破坏模式为核心混凝土的横向变形导致UHPC模柱出现竖向裂缝, 并与核心混凝土在界面处分离; 达到极限荷载破坏时, 外包UHPC层出现纵向裂缝, 荷载增大, 裂缝增长, 并有混凝土剥落现象, 但U-RC组合桥墩破坏时其外包UHPC层纵向应变未达到极限压应变。
- 桥梁工程 /
- 跨海大桥 /
- 组合桥墩 /
- 永久模柱 /
- 超高性能混凝土 /
- 钢筋混凝土 /
- 受力性能
Abstract: In order to solve the construction and anti-corrosion problems of pier of sea-crossing bridge, a new structure of composite pier of ultra-high performance concrete (UHPC) and reinforced concrete (RC) (short for U-RC composite pier) was designed, and UHPC cylinder was taken as permanent cylinder to cast core reinforced concrete. The Pingtan Strait Bridge was taken as project background, the structure design and calculation of U-RC composite pier were carried out, and the workload and cost of U-RC composite pier were compared with the ones of original design scheme. The ultimate bearing capacity tests of three core reinforced concrete columns, three UHPC cylinders and three U-RC composite piers were carried out, the longitudinal andtransverse strains of concrete for the specimens were measured, the failure modes and the developments of cracks were observed, the test values of ultimate bearing capacities were obtained, and the mechanical properties of U-RC composite pier were analyzed. Research result indicates that the bearing capacity of U-RC composite pier is greater than the design value of internal force, which meets the current specification requirement. The design scheme that adopts UHPC cylinder to replace steel template, can save about 2 410 tof steel, and the total cost saves nearly 30%. The average bearing capacities of three UHPC cylinders and three RC columns are1 342 kN and 1 370 kN, respectively, and their sum is less than the average bearing capacity of three U-RC composite piers (3 033 kN), which indicates that the UHPC cylinder has certain confinement effect for core concrete, and it is feasible and conservative to calculate the ultimate bearing capacity of U-RC pier under axial compression with simple superposition method. In the axial compression experiment, the failure mode of U-RC composite pier is that the lateral deformation of core concrete leads to the vertical fracture of UHPC cylinder and the separation of UHPC and core concrete at the interface. At the ultimate load, the coating UHPC layers have vertical cracks that grow with the increase of the load, and the flaking and spalling phenomena of concrete appear. But when the U-RC composite pier is damaged, the longitudinal strain of coating UHPC does not reach the ultimate compressive strain.
- bridge engineering /
- sea-crossing bridge /
- composite pier /
- permanent cylinder /
- ultra-high performance concrete (UHPC) /
- reinforced concrete /
- mechanical property

HTML全文

图 1 平潭海峡大桥

Figure 1. Pingtan Strait Bridge

下载: 全尺寸图片幻灯片

图 2 桥墩构造(单位: cm)

Figure 2. Structure of pier (unit: cm)

下载: 全尺寸图片幻灯片

图 3 设计桥墩构造(单位: cm)

Figure 3. Structure of designed pier (unit: cm)

下载: 全尺寸图片幻灯片

图 4 UHPC模柱接头构造(单位: cm)

Figure 4. Structure of joint of UHPC cylinder (unit: cm)

下载: 全尺寸图片幻灯片

图 5 设计桥梁有限元模型

Figure 5. Finite element model of designed bridge

下载: 全尺寸图片幻灯片

图 6 U-RC验算截面

Figure 6. Checking section of U-RC

下载: 全尺寸图片幻灯片

图 7 受力模柱

Figure 7. Cylindrical template with forces

下载: 全尺寸图片幻灯片

图 8 筒体运输

Figure 8. Transport of cylinder

下载: 全尺寸图片幻灯片

图 9 桥墩施工现场

Figure 9. Construction scene of pier

下载: 全尺寸图片幻灯片

图 10 组合桥墩构造(单位: mm)

Figure 10. Structure of composite pier (unit: mm)

下载: 全尺寸图片幻灯片

图 11 组合桥墩试件

Figure 11. Specimens of composite pier

下载: 全尺寸图片幻灯片

图 12 压力机

Figure 12. Compression machine

下载: 全尺寸图片幻灯片

图 13 U-RC1裂缝

Figure 13. Cracks of U-RC1

下载: 全尺寸图片幻灯片

图 14 U-RC1破坏

Figure 14. Damage of U-RC1

下载: 全尺寸图片幻灯片

表 1 UHPC配合比

Table 1. Mixing proportion of UHPC

下载: 导出CSV

表 2 U-RC试件承载力与应变

Table 2. Bearing capacities and strains of U-RC specimens

下载: 导出CSV

参考文献(25)

[1]	吕忠达. 杭州湾跨海大桥关键技术研究与实施[J]. 土木工程学报, 2006, 39 (6): 78-82. doi: 10.3321/j.issn:1000-131X.2006.06.014 LU Zhong-da. Key technologies for Hangzhou Bay Bridge[J]. China Civil Engineering Journal, 2006, 39 (6): 78-82. (in Chinese). doi: 10.3321/j.issn:1000-131X.2006.06.014
[2]	叶华成. 上海长江大桥水上非通航孔墩身预制安装技术[J]. 桥梁建设, 2007 (5): 55-58. doi: 10.3969/j.issn.1003-4722.2007.05.016 YE Hua-cheng. Techniques for precasting and installation of pier shafts of non-navigable spans of Shanghai Changjiang River Bridge[J]. Bridge Construction, 2007 (5): 55-58. (in Chinese). doi: 10.3969/j.issn.1003-4722.2007.05.016
[3]	郭熙冬. 港珠澳大桥承台墩身工厂化预制施工技术[J]. 桥梁建设, 2014, 44 (2): 107-111. https://www.cnki.com.cn/Article/CJFDTOTAL-QLJS201402019.htm GUO Xi-dong. Construction techniques for factory precasting of pile caps and pier shafts of Hong Kong-Zhuhai-Macao Bridge[J]. Bridge Construction, 2014, 44 (2): 107-111. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-QLJS201402019.htm
[4]	RICHARD P, CHEYREZY M. Composition of reactive powder concretes[J]. Cement and Concrete Research, 1995, 25 (7): 1501-1511. doi: 10.1016/0008-8846(95)00144-2
[5]	CWIRZEN A, PENTTALA V, VORNANEN C. Reactive powder based concretes: mechanical properties, durability and hybrid use with OPC[J]. Cement and Concrete Research, 2008, 38 (10): 1217-1226. doi: 10.1016/j.cemconres.2008.03.013
[6]	陈宝春, 季韬, 黄卿维, 等. 超高性能混凝土(UHPC) 研究综述[J]. 建筑科学与工程学报, 2014, 31 (3): 1-24. doi: 10.3969/j.issn.1673-2049.2014.03.002 CHEN Bao-chun, JI Tao, HUANG Qing-wei, et al. Review of research on ultra-high performance concrete[J]. Journal of Architecture and Civil Engineering, 2014, 31 (3): 1-24. (in Chinese). doi: 10.3969/j.issn.1673-2049.2014.03.002
[7]	杜任远, 黄卿维, 陈宝春. 活性粉末混凝土桥梁应用与研究[J]. 世界桥梁, 2013, 41 (1): 69-74. https://www.cnki.com.cn/Article/CJFDTOTAL-GWQL201301016.htm DU Ren-yuan, HUANG Qing-wei, CHEN Bao-chun. Application and study of reactive powder concrete to bridge engineering[J]. World Bridges, 2013, 41 (1): 69-74. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-GWQL201301016.htm
[8]	陈宝春, 黄卿维, 王远洋, 等. 中国第一座超高性能混凝土(UHPC) 拱桥的设计与施工[J]. 中外公路, 2016, 36 (1): 67-71. https://www.cnki.com.cn/Article/CJFDTOTAL-GWGL201601017.htm CHEN Bao-chun, HUANG Qing-wei, WANG Yuan-yang, et al. Design and construction of the first UHPC arch bridge in China[J]. Journal of China and Foreign Highway, 2016, 36 (1): 67-71. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-GWGL201601017.htm
[9]	HABEL K, VIVIANI M, DENARIE, et al. Development of the mechanical properties of an ultra-high performance fiber reinforced concrete (UHPFRC)[J]. Cement and Concrete Research, 2006, 36 (7): 1362-1370. doi: 10.1016/j.cemconres.2006.03.009
[10]	KASSIR M K, GHOSN M. Chloride-induced corrosion of reinforced concrete bridge decks[J]. Cement and Concrete Research, 2002, 32 (1): 139-143. doi: 10.1016/S0008-8846(01)00644-5
[11]	余红发, 孙伟, 麻海燕, 等. 混凝土在多重因素作用下的氯离子扩散方程[J]. 建筑材料学报, 2002, 5 (3): 240-247. doi: 10.3969/j.issn.1007-9629.2002.03.008 YU Hong-fa, SUN Wei, MA Hai-yan, et al. Diffusion equations of chloride ion in concrete under the combined action of durability factors[J]. Journal of Building Materials, 2002, 5 (3): 240-247. (in Chinese). doi: 10.3969/j.issn.1007-9629.2002.03.008
[12]	牛荻涛. 海洋环境下混凝土强度的经时变化模型[J]. 西安建筑科技大学学报: 自然科学版, 1995, 27 (1): 49-52. https://www.cnki.com.cn/Article/CJFDTOTAL-XAJZ501.010.htm NIU Di-tao. Changing models of concrete strength along with time in marine environment[J]. Journal of Xi'an University of Architecture and Technology: Natural Science Edition, 1995, 27 (1): 49-52. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-XAJZ501.010.htm
[13]	戴兰芳, 梁旭黎, 赵胜涛, 等. 活性粉末混凝土(RPC) 的强度和耐久性分析[J]. 河北大学学报: 自然科学版, 2006, 25 (6): 583-586. https://www.cnki.com.cn/Article/CJFDTOTAL-HBDD200506005.htm DAI Lan-fang, LIANG Xu-li, ZHAO Sheng-tao, et al. Analysis of the strength and durability for reactive powder concrete[J]. Journal of Hebei University: Natural Science Edition, 2006, 25 (6): 583-586. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-HBDD200506005.htm
[14]	郝文秀, 阎贵平, 钟铁毅, 等. 反复荷载作用下活性粉末混凝土空心桥墩力学性能的试验研究[J]. 铁道学报, 2009, 31 (5): 60-64. doi: 10.3969/j.issn.1001-8360.2009.05.010 HAO Wen-xiu, YAN Gui-ping, ZHONG Tie-yi, et al. Experimental study on the mechanical behavior of reactive powder concrete piers with hollow cross-sections subjected to cyclic loading[J]. Journal of the China Railway Society, 2009, 31 (5): 60-64. (in Chinese). doi: 10.3969/j.issn.1001-8360.2009.05.010
[15]	卜良桃, 鲁晨, 朱健. 水泥钢纤维砂浆钢筋网加固矩形混凝土偏压柱试验研究[J]. 湖南大学学报: 自然科学版, 2013, 40 (3): 15-20. doi: 10.3969/j.issn.1674-2974.2013.03.003 BU Liang-tao, LU Chen, ZHU Jian. Experimental study of RC columns strengthened with steel fiber cement motar with mesh reinforcement under eccentric loading[J]. Journal of Hunan University: Natural Sciences, 2013, 40 (3): 15-20. (in Chinese). doi: 10.3969/j.issn.1674-2974.2013.03.003
[16]	王钧, 陈旭, 李行, 等. 配有钢纤维RPC永久柱模的RC框架静力性能试验[J]. 沈阳建筑大学学报: 自然科学版, 2014, 30 (1): 9-17. https://www.cnki.com.cn/Article/CJFDTOTAL-SYJZ201401003.htm WANG Jun, CHEN Xu, LI Hang, et al. Static experimental on reinforced concrete frame structures with steel fiber RPC permanent pillar[J]. Journal of Shenyang Jianzhu University: Natural Science, 2014, 30 (1): 9-17. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-SYJZ201401003.htm
[17]	胡源. 活性粉末混凝土预制管混凝土组合柱轴心抗压性能研究[D]. 长沙: 湖南大学, 2015. HU yuan. The axial compressive performance study of a reactive powder concrete precast tube concrete composite columns[D]. Changsha: Hunan University, 2015. (in Chinese).
[18]	单波, 刘志, 肖岩, 等. RPC预制管混凝土组合柱组合效应试验研究[J]. 湖南大学学报: 自然科学版, 2017, 44 (3): 88-96. https://www.cnki.com.cn/Article/CJFDTOTAL-HNDX201703011.htm SHAN Bo, LIU Zhi, XIAO Yan, et al. Experimental research on composite action of concrete-filled RPC tube under axial load[J]. Journal of Hunan University: Natural Sciences, 2017, 44 (3): 88-96. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-HNDX201703011.htm
[19]	张荣辉, 何远航, 张钦. 水性环氧树脂与水泥复合的胶砂强度分析及其咸潮区桥梁墩柱加固应用[J]. 混凝土, 2006 (8): 101-104. https://www.cnki.com.cn/Article/CJFDTOTAL-HLTF200708031.htm ZHANG Rong-hui, HE Yuan-hang, ZHANG Qin. Analysis of glue sand intension compounded by water-epoxy resin and cement and reinforce application of bridge frusta pole in salted tide section[J]. Concrete, 2006 (8): 101-104. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-HLTF200708031.htm
[20]	杜任远. 活性粉末混凝土梁、拱极限承载力研究[D]. 福州: 福州大学, 2014. DU Ren-yuan. Research on ultimate load-carrying capacities of reactive powder concrete (RPC) box girder and arch[D]. Fuzhou: Fuzhou University, 2014. (in Chinese).
[21]	李学斌, 杨心怡, 李东升, 等. 节段梁环氧树脂胶接缝抗拉强度的试验研究[J]. 铁道建筑, 2015 (1): 23-26. https://www.cnki.com.cn/Article/CJFDTOTAL-TDJZ201501005.htm LI Xue-bin, YANG Xin-yi, LI Dong-sheng, et al. Experimental study on tensile strength of epoxy resin glued joint in segmental girders[J]. Railway Engineering, 2015 (1): 23-26. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-TDJZ201501005.htm
[22]	陈贵田, 张锦松, 夏宏江. 有底混凝土吊箱在青岛海湾大桥承台桥墩施工中的设计与应用[J]. 水运工程, 2010 (5): 132-137. https://www.cnki.com.cn/Article/CJFDTOTAL-SYGC201005037.htm CHEN Gui-tian, ZHANG Jin-song, XIA Hong-jiang. Design and application of hanging concrete box with bottom board in bearing platform and bridge pier construction of Qingdao Bay Bridge[J]. Port and Waterway Engineering, 2010 (5): 132-137. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-SYGC201005037.htm
[23]	林葵. 宽滩涂强冲刷跨海大桥墩身基础施工技术[J]. 铁道建筑技术, 2013 (2): 16-20. https://www.cnki.com.cn/Article/CJFDTOTAL-TDJS201302006.htm LIN kui. Construction technology on foundation and pier of large sea-crossing bridge with broad foreshore and strong scour[J]. Railway Construction Technology, 2013 (2): 16-20. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-TDJS201302006.htm
[24]	陈宝春, 林上顺. 混凝土偏压柱承载力计算方法[J]. 交通运输工程学报, 2014, 14 (1): 18-25. http://transport.chd.edu.cn/article/id/201401003 CHEN Bao-chun, LIN Shang-shun. Calculation methods of bearing capacities of eccentrically loaded concrete columns[J]. Journal of Traffic and Transportation Engineering, 2014, 14 (1): 18-25. (in Chinese). http://transport.chd.edu.cn/article/id/201401003
[25]	林上顺, 陈宝春. 素混凝土柱极限承载力计算方法[J]. 交通运输工程学报, 2015, 15 (2): 22-31. doi: 10.19818/j.cnki.1671-1637.2015.02.003 LIN Shang-shun, CHEN Bao-chun. Calculation method of ultimate bearing capacity for plain concrete column[J]. Journal of Traffic and Transportation Engineering, 2015, 15 (2): 22-31. (in Chinese). doi: 10.19818/j.cnki.1671-1637.2015.02.003