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APPLICATION OF GRILLAGE THEORY IN THE STRUCTURE OF SKEW BRIDAE OF CONTINUOUS GIRDER |
LU Peng-zhen, ZHANG Jun-ping |
Guangzhou University |
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Abstract Research purpose: Aim at the complicacy construction characteristics of T type breadth entity consecution the plank beam bridge and problem that it was never better managed by uses the construction analysis method of the normal regulations.
Research method: Based on grillage theory for the skew bridge of continuous girder to calculate and simplify about the structure, and make use of just the principle of rigidity equivalent proceeds analysis to the original construction and makes use of the analysis method of FEM proceed to scatter for the construction, at the same time utilize SAP2000 procedure of FEM to imitate analysis to simple one dose of models of grillage at the same time.
Research result: For begging the solution analysis breadth, inclined suffer the continuous beam of dint sophisticate, similar with this structural a box beam as well as entity plank beams and offered a kind of practical and simple and convenient method by the continuous girder with complicated strength.
Research conclusion: By calculating the engineering example and comparing with the calculating result for shell model, grillage theory has better use value in construction.
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Received: 02 September 2005
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