|Table of Contents|

Parameter influence analysis of existing simply-supported box girder bridge based on crack feature(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2010年02期
Page:
58-63
Research Field:
Publishing date:
2010-04-20

Info

Title:
Parameter influence analysis of existing simply-supported box girder bridge based on crack feature
Author(s):
ZHAO Yu1; 2;  REN Wei2;  LI Chun-feng2;  HE Shuan-hai2
1. School of Civil Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory for old Bridge Detection and Reinforcement Technology of Ministry of Transportation, Chang'an University, Xian 710064, Shaanxi, China
Keywords:
bridge engineering;  prestressed concrete box girder;  crack feature;  effective stiffness;  bearing capacity
PACS:
U441.6
DOI:
-
Abstract:
Aimed at the cracking of simply-supported box girder bridge, the simulation calculation model was presented based on the primary statistical cracks which included the tension cracks in the mid-span and oblique cracks near the shear moment regions. The sum width of tension cracks, number of oblique cracks and height of oblique cracks were taken as three sensitive parameters to study their effects on the structural deformation and stress respectively. The results show that the sum width of tension cracks and the number of oblique cracks greatly influence the structural deformation and stress, whereas the height of oblique cracks has the least effects. Therefore, the concrete tress in the tension region must be sufficient to prevent the deficient of rigidity caused by the cracking. 7 tabs, 13 figs, 10 refs.

References:

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Last Update: 2010-04-20