Second Stability Study of Super Wide“321”Prefabricated Highway Steel Bridge
[1]LI Fei-ran.Second Stability Study of Super Wide“321”Prefabricated Highway Steel Bridge[J].Journal of Zhengzhou University (Engineering Science),2015,36(04):92-95.[doi:10.3969/ j.issn.1671 - 6833.2015.04.021]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
36
Number of periods:
2015 04
Page number:
92-95
Column:
Public date:
2015-08-31
- Title:
- Second Stability Study of Super Wide“321”Prefabricated Highway Steel Bridge
- Keywords:
- “321”prefabricated highway steel bridge ; large scale transverse beam; super wide; bearing ca-pacity ; design
- CLC:
- U442.5
- DOI:
- 10.3969/ j.issn.1671 - 6833.2015.04.021
- Abstract:
- Based on material nonlinear FEM and multi-convergence criterions,the new super wide " 321" pre-fabricated highway steel bridge was studied. The results show that the second stability coefficient of the extrawide "321" prefabricated highway steel bridge is small,which means the structure is not safe. The secondstability coefficient will be greatly improved, when a support is set at the mid-span. To avoid the local yieldprecedes the whole,the support should be set at the studdle position. The second stability coefficient is almostlinear increase within three supports by criterion [ and ll,but under criterion Ⅲ it does not significantly in-creased when the mid-span supports above two. ln application,the second stability coefficients will not in-crease when the number of mid-span supports is above two.
- References:
- -
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