|Table of Contents|

Dynamic Assessment About Existing Simply-supported Hinge Joint Celluar Slab Bridges(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2009年04期
Page:
24-29
Research Field:
Publishing date:
2009-12-20

Info

Title:
Dynamic Assessment About Existing Simply-supported Hinge Joint Celluar Slab Bridges
Author(s):
LI De-jian;  PENG Yan
School of Civil Engineering and Architecture, Central South University, Changsha 410075, Hunan, China
Keywords:
simply-supported hinge joint celluar slab bridge;  dynamic characteristic;  impact coefficient;  Dickman comfort criteria;  dynamic assessment of structural condition
PACS:
U443.22
DOI:
-
Abstract:
A dynamic assessment method about existing simply-supported hinge joint celluar slab bridges was researched with the project of west approach bridge of North Bridge over Xiangjiang River in Changsha, Hunan province as an example.Firstly, based on the basic principles of grillage method, an improved grillage model was put forward, which made the vertical constraint of crossing beam ends couple at the same hinged joint to simulate longitudinal hinge joint, the space dynamic characteristic analytical model of the bridge was established and the dynamic characteristics of the bridge were calculated. Then, authors proved the correction of the model through the dynamic test and introduced the dynamic assessment test contents and test methods and test results. The analytical results show that the dynamic coefficients can meet the needs of the specification and the bridges are in good condition. This method provide an effective means for the assessment of the existing simply-supported hinge joint slab bridges.

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Last Update: 2009-12-20