Design Of Continuous Beam Arch Combination Bridge In Jilin Oilfield

The continuous beam arch combination system bridgeis a innovative structural system of structure reasonable force beautiful appearance,the main force member is constitutedby the stringers,rib,boom and the arch.This bridge overcamethe huge arch end thrust of traditional arch bridge and improvedthe bending moment and shears force status of continuousbeam bridge;maximize the character of arch beam concreteand pre-stressed reinforcement and the economic benefits areremarkable.In this article,the author test the bridge static anddynamic loading of continuous beam arch combination,andcoMParative analysis the test results and the theoretical to providea reliable basis to evaluate the performance of the bridgestructure overall evaluation,to verify the design theory and determinethe structural safety.It uses the pressure arch rib beam prestressed beam arch thrust and resistance,and hanger deck structures under deck loads,which not only overcomes the huge arch bridge arch thrust,and improve the continuous beam bridge with large bending moment and shear force,to maximize the characteristics of concrete and prestressed steel arch respectively,with significant economic benefits.And through continuous beam arch combination bridge,is suitable for the continuous bridge force characteristics of the structure,in the moment of large span and in support of the arch and beam relative distance increases,the arch beam compression,tension become the best stress state of the bridge bending,and shear in the largest the fulcrum,the arch axis and the horizontal line is the maximum angle,the vertical component of the pressure arch effectively balance the shear.Span ratio is a characteristic parameter of arch bridge,it not only affects the arch rib and the beam,but also on the choice of the construction method of arch bridge,at the same time,the shape of the arch bridge can be in harmony with the surrounding scenery,have a great relationship.The arch beam arch stiffness is the flexural stiffness of arch rib,the stiffness of the beam is involved in the interaction of deck beam stiffness,stiffness ratio of beam arch combination bridge also has a great influence.Therefore,in the design,the ratio of the design parameters,such as the ratio of span to span,the ratio of stiffness,should be comprehensively coMPared.The continuous beam arch composite bridge for Jilin oilfield development and construction needs,give full consideration to the needs of various transport vehicles two dead load 219# pipeline construction and production required in the design process,so this design in the design is safe and reliable,but also meet the needs of production and construction of Jilin oil field.