吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (1): 121-126.doi: 10.13229/j.cnki.jdxbgxb201501018

• Orignal Article • Previous Articles     Next Articles

Calculation and analysis of flexible pier internal force based on method of differential equation set

Wang Wei1,2,Wang Lei1   

  1. 1.College of Construction Engineering, Jilin University, Changchun 130026,China;
    2.School of Prospecting and Surveying, Changchun Institute of Technology, Changchun 130012,China
  • Received:2013-09-24 Online:2015-02-01 Published:2015-02-01

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Abstract: Using Maple software as the platform, a method is proposed to calculate the internal force of flexible pier by solving the differential equation set. In this method, first, each bridge pier is considered as a whole, and the differential relationship of each calculation unit of the pier is established according to the coordinating deformation of each node and the force equilibrium condition. Then, all the bridge piers are considered as a whole, and the differential relationships among the piers are established according to the lateral displacement produced by shrinkage, the creep of concrete and the temperature influence on each node. Finally, by simultaneously solving the differential equation set, the internal force functional analytical formula of each pier was obtained. Compared to the currently used integrated stiffness method, the proposed calculation method has the advantages of simple and convenient, and the result is more precise and reliable.

Key words: road engineering, differential equations set, flexible pier, internal force calculation

CLC Number: 

  • U443.21
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