Internal Force Analysis of the Girder and Arch Combination Bridge of Continuous Rigid Frame with V-shaped Support
Liu Shizhong Ren Wanming
Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (2) : 56-59.
Internal Force Analysis of the Girder and Arch Combination Bridge of Continuous Rigid Frame with V-shaped Support
Abstract: The girder and arch combination bridge of continuous rigid frame with V-shaped Support is studied in this paper. This paper introduces the design of V-shaped piers of the beam-Arch Combination System Bridge of continuous rigid frame. Using SMAD finite element computing method, the author pays attention to the analysis of influences that the size of pier bodies and boundary conditions make to the whole structure. Through the optimization of computing, the author treats the adverse influences that shrinkage, creep of second internal force, Pre-stressed and temperature of second internal force make to the structure. The ratio of lateral stiffness is 1926:1 between the tie beam and arch rib of the bridge. After the completions of main shrinkage and creep, constructing the arch of main girder and the suspenders are double erected by supporting cable,this method treats effectively the lateral stability of frame arch bridges with flexible bars. Three-dimensional seismic responses of the bridge show that all upper parts of the bridge's seismic forces are not the control internal forces of the bridge, then illustrate the structural design of the bridge have a good seismic performance. This internal force analysis and conclusions are useful to construction and design of similar bridges.
V-shaped piers / girder and arch combination / shrinkage and creep / stability of arch / seismic response {{custom_keyword}} /
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