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Experiment on Static and Fatigue Behavior of Steel Plate-concrete Composite Bridge Decks

Author: HuoXuDong
Tutor: XueJianYang；YangYong
School: Xi'an University of Architecture and Technology
Course: Structural Engineering
Keywords: Steel - concrete composite bridge decks Static performance Nonlinear finite element Fatigue properties Stiffness degradation Fatigue life
CLC: U441
Type: Master's thesis
Year: 2011
Downloads: 52
Quote: 0
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Abstract


Steel - concrete composite bridge deck from the bottom of the steel and concrete through the panel in the form of stud or opening steel plate in the form of shear connectors combined into a new type of composite bridge . Compared with the traditional bridge deck , steel - concrete composite bridge deck stiffness , bearing capacity and high effective design applications for large-span bridge deck . Bridge deck construction , the bottom of the steel plate can play the role of a template , eliminating the template support erection and dismantling work , fast construction . Meanwhile, in the renovation and reconstruction works of reinforced concrete bridge decks , steel - concrete composite bridge decks to be able to speed up the construction progress and reduce the traffic impact . Therefore, the steel - concrete composite bridge decks in the engineering practice has a broad application prospects . Steel - concrete composite bridge deck specimens for the study of the mechanical properties of steel - concrete composite bridge deck under static and fatigue loading , the static test and amplitude fatigue test . By four steel - concrete composite bridge deck specimens static tests showed that a combination of bridge panel has higher flexural capacity and stiffness , failure modes are bending failure . For further study of the mechanical properties of steel - concrete composite bridge deck , using the finite element software ABAQUS analysis of non-linear performance of the four specimens under static load . 10 steel - concrete composite bridge deck specimens amplitude fatigue test , test mainly on the pegs arranged hole steel plate number of connections and the fatigue load amplitude three factors on the the combination bridge deck fatigue failure mode and the influence of the degree of fatigue damage . Composite Bridge Deck dynamic deflection of each of the major moments , concrete strain , the bottom of the steel plate strain , residual deflection , and the remaining carrying capacity measured during the test . The test results show that : the bridge deck of a combination of fatigue loading times and the bottom of the steel plate fatigue stress amplitude direct relationship to the number of the layout of the studs and cutout steel plate connectors fatigue properties of the composite bridge deck composite bridge panel fatigue failure pattern showed fatigue fracture of the bottom of the steel plate , concrete crushing of the compression zone . Finally , on the basis of the fatigue test , this paper, steel - concrete composite bridge decks under fatigue loading stiffness and fatigue life calculation method .

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CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics
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