Application of Pile Underpinning for Strengthening Design of Longgan Bridge

Abstract:

Local scouring around the bridge pier occurs because of flow separation and the development of several vortexes around the pier. Such scour holes can cause a weakness in the bridge which may see cracks occurring on the box girders, especially during flooding. This paper presents a design scheme in which a pile underpinning technique has been adopted for such cases during research into defects in bridges. Furthermore, the finite element model has been established to evaluate the bearing capacity of the bridge before and after adopting this new measure. A large quantity of calculation data indicate that the application of the proposed method performs appropriately and plays an important role in raising the bearing capacity of bridge. The specific program bringing this into effect correctly in a renovation project is illustrated.

• Periodical: Advanced Materials Research (Volumes 163-167)
• Pages: 3465-3473
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.163-167.3465
• Online since: December 2010
• Authors: Yi Ping Tan, Jian Li, Jin Hua Zou, Hai Bo Jiang
• Keywords: Bridge Foundation, Cast-In Situ Bored Pile (CISBP), Defect, Strengthening, Underpinning

References

[1] BU Jianqing, SUN Ning, KE Zaitian. 2009. Technical progress of active pile foundation underpinning[J]. Railway Engineering, (4): 73-77. In Chinese.

[2] LI Yanming. 2004. The pile foundation underpinning technology of the bridge in Guangzhou-Shenzhen railway [J]. Railway Standard Design. (5): 52-54. In Chinese.

[3] WANG Shijun. 2006. Application of Pile Underpinning Technology in Line Three of Guangzhou Metro [J]. Construction Technology; (7): 54-57. In Chinese.

[4] ZHANG Jiqing. 2004. The engineering of jacking and chanqing of piled foundation in Pu-Tian section of Beijing metro line 5[J]. Modern Urban Transit. 2: 36-38. In Chinese.

[5] Code of Maintenance of Highway Bridges and Culvers (JTG H11-2004)[S], 2004Ministry of Communications P.R.C., Beijing: People's Communications Press. In Chinese.

[6] HUANG Liang. 2006. Research of strengthening technique on highway bridge [J]. Jornal of Guangxi University. 33 (4): 275-277. In Chinese.

[7] Code for Design of highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts (JTG D62-2004)[S]. 2004. Ministry of Communications P.R.C., Beijing: People's Communications Press. In Chinese.

[8] LIU Zhanfang, YANG Qingguo, GU Jianyi, The disease analysis and reinforcement measures of an elevated continuous beam bridge[J], Highway Engineering, 2008, 33(4): 173-176. In Chinese.

[9] JAING Haibo, HE Baiqing, ZHOU Jincheng, GUAN Qihua. 2007. Reinforcement of Zini bridge with external prestressed bar[J]. Journal of China & Foreign Highway; 7(5): 158-161. In Chinese.

[10] PENG Zhenbin. 1997. Underpinning Design Calculations and Construction [M]. Wuhan: China University of Geosciences Press. In Chinese.