Anti-seismic Performance of CFST Composite Trussed Bridge Caused by Near-field and Far-field Earthquake(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2018年05期
- Page:
- 118-127
- Research Field:
- Publishing date:
Info
- Title:
- Anti-seismic Performance of CFST Composite Trussed Bridge Caused by Near-field and Far-field Earthquake
- Author(s):
- PU Bei-chen; ZHOU Xu-hong; LIU Yong-jian; LIU Bin
- Keywords:
- School of Highway; Chang‘an University
- PACS:
- -
- DOI:
- -
- Abstract:
- Based on optimization toward the continuous prestressed concrete rigid bridge，a new type of bridge, whose superstructure adopted rectangular concrete filled steel tubular(RCFST) composite truss girder and superstructure adopted circular concrete filled steel tubular (CFST) lattice pier, was proposed. The comparative study of seismic performance of traditional continuous prestressed concrete rigid bridge, continuous prestressed concrete rigid optimization bridge and CFST composite trussed bridge caused by near field and far field earthquake were analyzed by numerical analysis method. The results show that antiseismic performance of CFST composite truss bridge and continuous prestressed concrete rigid optimization bridge are superior to traditional continuous prestressed concrete rigid bridge. Comparing to the traditional continuous prestressed concrete rigid bridge, the antiseismic performance of CFST composite truss bridge is excellent, bending moment and shear force of the pier decrease by 41.9%, 66.1% in the near field earthquake, and decrease by 37.5%,76.4% in the farfield earthquake. Compared to far field earthquake，near field earthquake enables the initial earthquake energy of structure to increase greatly, displacement and bending moment of the pier jump as much as 570%, 350% respectively. Therefore, CFST composite trussed bridge is a type of bridge which has excellent anti-seismic performance, can provide a good reference for the design selection of prefabricated steel and concrete bridge in the western regions.
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Last Update: 2018-09-03