Crack Analysis of Bridge Piers of a Rail Transit Line in Guangzhou City

Abstract:

In order to study the bridge of a rail transit line in Guangzhou city, we use the finite element program Midas/FEA. Combining with the structure characteristics of the bridge, we establish space finite element model of piers. The linear and nonlinear analysis have been done respectively. In view of the nonlinear analysis, we analyze the left and right bearing under the most unfavorable load and dead load. The results show that as the ordinary reinforced concrete structure, bridge piers are bending crack under the design load. The width of crack controlled by force is less than the design value, so the bridge piers are in a safe state and it does not affect the normal operation. We noticed that the crack in piers appear a feature that width of crack become narrow in points under force controlling, but in other areas the crack in piers appear a feature that width of crack become wide. We have a preliminary judgment that the cause of this phenomenon may be the construction quality such as the actual reinforced protective layer are excessivecooling measures in the process of the construction of the pier head of mass concrete did not reach the designated positionmaintenance measures were in place and so on. The construction quality cause combined effects of mass concrete shrinkage crack and the structure of normal stress fracture.

• Periodical: Advanced Materials Research (Volumes 915-916)
• Pages: 137-141
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.915-916.137
• Online since: April 2014
• Authors: Mu Chen*, Jiang Hong Xue
• Keywords: Continuous Girder Bridge, Crack Analysis, Midas/FEA

References

[1] Information on http: /www. midasuser. cn/bbs/forum. php.

[2] 《Code for design of metro》（GB50517-2003）.

[3] 《Design basic specifications of railway bridge culvert》（TBl0002. 1-2005）.

[4] 《Code for design of railway bridges reinforced concrete and prestressed concrete structure》（TB10002. 3-2005）.