Statistics Analysis of the Bridge Dynamic Response in the Survey of Expressway Traffic Loads

Abstract:

Nowadays, with the rapid development of the traffic infrastructure construction and the growing of the traffic flowing and speed, the vehicle-bridge coupling vibration research has become the focus of the bridge engineering study. The dynamic response of the bridge under the traffic flowing is one of vital parameters for the vehicle-bridge coupling vibration analysis. In this paper, a methodology, employing the radar speed gun, the video recorder, and the dynamic strain tester in combination with manually recording is used to continuously and detailed investigate the traffic loads on the expressway bridge within 24 hours a day. With this approach introduced by this paper, all the critical parameters, such as the vehicle type, speed, traffic lane, the arriving time of the traffic and the bridge-vehicle dynamic interaction are all recorded. In this investigation, firstly the dynamic responses of 8 pieces of beams of the bridge under 5650 individual vehicles driving through the bridge are recorded, secondly statistics analysis are made for the record of each beam, and finally the space-time distribution laws of the dynamic response of the bridge under the traffic flowing are studied extensively. The result of this study could provide helpful theoretic guidance and supporting data for the vehicle-bridge coupling vibration research.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 1633-1637
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.1633
• Online since: May 2011
• Authors: Tao Wang, Wan Shui Han
• Keywords: Bridge, Dynamic Response, Expressway, Traffic Load, Trimodal Distribution

References

[1] Yanghai Li, Weigang Bao, Xiuwu Guo, et al.: Structural Reliability for Highway Bridges and Probability-based Limit State Design. Beijing: China Communications Press(1997). (in Chinese)

[2] A. S. NOWAK: Structural Safety. Vol. 13 (1/ 2) (1993), p.53~66.

[3] T. J. Miao: Bridge Live Load Models with Special Reference to Hong Kong. Hong Kong: The Hong Kong Polytechnic University(2001).

DOI: 10.17705/1jais.00622

[4] Gang Mei, Quan Qin, Daojin Lin: Journal of Tsinghua University (Sci&Tech). Vol. 43 (2003), pp.1394-1397, 1404. (in Chinese)

[5] Tong Guo, Aiqun Li, Daliang Zhao: Journal of southeast Tsinghua University (Natural Science Edition). Vol. 38(2008) , p.763~766. (in Chinese)

[6] Tao Wang: Investigation Statistics and Simulation for Random Traffic Loading of Expressway Bridge. xi'an: Chang'an University (2010). (in Chinese)