| Author Name | Affiliation | | YANG Ming | School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
Transportation College, Southeast University, Nanjing 210096, China | | HUANG Qiao | School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
Transportation College, Southeast University, Nanjing 210096, China | | WANG De-jun | School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China |
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| Abstract: |
| In order to understand mechanical characters and find out a calculating method for preflex beams used in particular bridge engineering projects, two types of simply supported preflex beams with variable cross-section, preflex beam with alterative web depth and preflex beam with alterative steel flange thickness, are discussed on how to achieve the equivalent moment of inertia and Young’s modulus. Additionally, methods of calculating the equivalent bending stiffness and post-cracking deflection are proposed. Results of the experiments on 6 beams agree well with the theoretical analysis, which proves the correctness of the proposed formulas. |
| Key words: variable cross-section preflex beam equivalent moment of inertia equivalent bending stiffness |
| DOI：10.11916/j.issn.1005-9113.2010.01.003 |
| Clc Number:U441.2 |
| Fund: |
