|Table of Contents|

Analysis on Dynamic Characteristics of Half-through Special-shaped CFST Arch Bridge(PDF)

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

Issue:
2012年01期
Page:
87-93
Research Field:
Publishing date:

Info

Title:
Analysis on Dynamic Characteristics of Half-through Special-shaped CFST Arch Bridge
Author(s):
HUANG Xiao-wei;  WANG Hao;  LI Ai-qun;  XIE Jing
Key Laboratory of C & PC Structures, Ministry of Education, Southeast University, Nanjing 210096, Jiangsu, China
Keywords:
half-through special-shaped concrete-filled steel tubular arch bridge;  finite element;  dynamic characteristic;  arch rib;  boundary condition
PACS:
U448.22
DOI:
-
Abstract:
Using the general finite element software ANSYS, the numerical simulation analysis was performed on a half-through special-shaped concrete-filled steel tubular(CFST)arch bridge to obtain dynamic characteristics.The self-vibration frequencies and vibration mode descriptions were given, and the influence factors on the self-vibration characteristics were also carried out. The results show that main arch rib, vertical boom and braces help to enhance the vertical stiffness of the arch bridge. Vice arch rib has a greater impact on the out-of-plane vibration and camber angle affect the overall stiffness of the structure. Transverse support and braces will improve the lateral stiffness of the arch ribs, and enhance the stability of wind resistance. The boundary conditions have great impacts on dynamic characteristics and degree of second dead load on the vertical vibration. The study results can provide a reference for the seismic design of similar bridges.

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Last Update: 2012-03-20