Journal:CHINA JOURNAL OF HIGHWAY AND TRANSPORT

Key Words:Bridge engineering continuous box beam nonlinear finite element analysis stiffness degradation model CB shell element layered model

Abstract:In order to study the stiffness degradation law of prestressed concrete continuous box beams after cracking, based on CB shell elements, a layered model was used to simulate the prestressed concrete structure; considering the loading and unloading effects and the dual nonlinear effects of material and geometry, the three spans were effectively simulated The whole process of cracking, yielding and failure of continuous skew box girder. Based on nonlinear finite element analysis, a stiffness degradation model of prestressed concrete box girder after cracking is proposed, from which the post-stressed concrete box girder is cracked. Stiffness reduction. The results show that the CB shell element model has good adaptability to the nonlinear analysis of prestressed concrete box girder, and has practical application value for the evaluation of the performance of the box girder after cracking.

All the Authors:zhangfeng

First Author:叶见曙

Indexed by:Journal paper

Discipline:Engineering

First-Level Discipline:Civil Engineering

Document Type:J

Volume:20

Issue:6

Page Number:67 ~ 72

Translation or Not:no

Date of Publication:2007-06-01

Included Journals:EI