吉林大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (01): 63-0066.

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Practical calculation of critical lateral flexure load of cable-arch systems

AI Yong-ming,YANG Bing-cheng,HUANG Ping-ming   

  1. College of Highway,Chang'an University,Xi'an 710064,China
  • Received:2009-05-07 Online:2010-01-01 Published:2010-01-01

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Abstract:

Based on the study of the lateral unstability of the arc arch, using the energy principle method, and considering the action of the stay cable, a practical expression was derived to calculate the critical lateral flexure load of the cable-arch system. The correctness of the expression was verified by the finite element method. The effect of the stay cable on the lateral stability of the cable-arch system was discussed. Results show that prestressing and shortening the cable, as well as increasing the cable cross area result in enhancement of the lateral stability of the cable-arch system.

Key words: bridge engineering, cable-arch system, lateral flexure, critical load, energy principle method

CLC Number: 

  • U448.29
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