Technologies on Replacement of Structural Members in Prestressed Concrete Cable-Stayed Bridges

Abstract:

Different from traditional strengthening methods, the technology on replacement of structural members is a new strengthening concept for solving the problem of local failures in prestressed concrete cable-stayed bridges. To clarify the characteristics and realization ways of this technology, practical experience and latest achievements of strengthening prestressed concrete cable-stayed bridges in recent years in China were summarized comprehensively, such as replacement of stay cables, replacement of closure segment, replacement of tension rocker bearing cables at subsidiary piers, et al. Forms of Special diseases were described, and their failure mechanisms were given. Then calculation methods and key techniques of these strengthening ways were introduced. Engineering application and practice showed, the technology on replacement of structural members is a system engineering, namely, not only new structural members should meet the mechanical requirements of their own, but also the structural condition of whole bridge should be improved through replacing structural members. Establishment and development of this technology had important and far-reaching significance to promote the technical level of strengthening long-span bridges under the condition of special diseases and ensure bridges in the sate of safe and sustainable operation.

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 1158-1166
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.1158
• Online since: January 2012
• Authors: Hong Jiang Li
• Keywords: Failure, Prestressed Concrete Cable-Stayed Bridges, Replacement, Strengthening, Structural Member

References

[1] JTG/T D65-1-2007, Guidelines for Design of Highway Cable-stayed Bridge. Beijing: China Communications Press(2007). (In Chinese)

[2] JTG D60-2004, General Code for Design of Highway Bridges and Culverts. Beijing: China Communications Press(2004). (In Chinese)

[3] Jian-ting ZHOU, Jin-quan ZHANG, Si-meng LIU, et al. New Strengthening Technologies of Large and Middle Bridges. Beijing: China Communications Press (2010). (In Chinese)

[4] Hong-jiang LI. Status and Development of Technologies of Maintenance and Strengthening for Existing PC Cable-Stayed Bridges. Proceedings of the 10th International Conference of Chinese Transportation Professionals, ASCE (2010).

DOI: 10.1061/41127(382)396

[5] Hong-jiang LI, Qi-feng WANG, Da-yi LU. Analysis on Failure Mechanism of Wet Joints in the Box-girder of an existing PC Cable-stayed Bridge. Proceedings of the 20th National Conference on Structural Engineering. Beijing: Engineering Mechanics (2011). (In Chinese)

[6] Hong-jiang LI, Rong-xia WANG, Lei WANG. Journal of Shandong Jianzhu University, Vol. 25 (2010), pp.405-409. (In Chinese)

[7] Hongjiang Li, Xindai Zuo, Hanwan Jiang, et al. Journal of Wuhan University of Technology(Transportation Science & Engineering), Vol. 34 (2010), pp.869-872. (In Chinese)

[8] Hong-jiang LI, Wan-heng LI, Jin-quan ZHANG, et al. Analysis on dynamic characteristics of Tianjin Yonghe Bridge after maintenance. The conference proceedings of Strengthening, retrofit, and evaluation for existing bridges in China, Beijing: China Communications Press (2008). (In Chinese)

[9] Hong-jiang LI. Journal of Civil,Architectural & Environmental Engineering, Vol. 31(2009), pp.81-85. (In Chinese)

[10] Hong-jiang LI, Wan-heng LI, Jin-quan ZHANG, et al. Journal of Highway and Transportation Research and Development, Vol. 25 (2008), pp.61-66. (In Chinese)

[11] Hong-jiang LI. Engineering Mechanics, Vol. 27 (2010), pp.210-215. (In Chinese)

[12] Hong-jiang LI, Jin-quan ZHANG, Wan-heng LI, et al. Journal of Shenzhen University Science and Engineering, Vol. 27 (2010), pp.280-285. (In Chinese)

[13] Yunhai CHEN, Ke CHEN, Jianming LU. Journal of Highway and Transportation Research and Development, Vol.28 (2011), pp.79-83. (In Chinese)

[14] Hong-jiang LI, Jian-ming LU, Yun-hai CHEN, et al. World Bridges, Vol. 11 (2011), pp.71-74. (In Chinese)