Research on the Structural Response Characteristic of Prefabricated Bridge for Heavy-cargo Transport Vehicle Passing Through Expressway
Taking the prestressed T-beam as an example,the structural response characteristics of the prefabricated bridge are studied.The results show that when the bridge span combination is the same,the stress of bridges with different skew angles is quite different,the extreme values of bending moment and shear force increase with the increase of the skew angle,and the bridge with larger skew angle can be selected as a typical control bridge.When the bridge span combination is the same,the bridge with odd number of main beam segments is subjected to more unfavorable force than the bridge with even number of main beam segments,and the bridge with odd number of main beam segments and small bridge width can be selected as a typical control bridge.When the single span is the same,the internal force extreme values of continuous T-beams with different spans are basically the same,but there are some differences between continuous T-beams and simply supported T-beams,and simply supported beams and continuous system bridges with fewer spans can be selected as typical control bridges.
heavy-cargo transport vehicleexpresswayprefabricated bridgestructural response
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