Research On The Performance For The Resultant Traveler Used To The Single Cable-stayed Bridge

In recent years, the development of long-span bridges has entered a new era.However, when people pursue the ability of the bridge across and handsome inappearance, the demand of the people for the bridge carrying capacity increases everyyear with the development of national economy. The indicators as Span, wide deck,handsome in appearance, security and economic indicators bred, and these are used forcomparison and selection of bridge-building programs as an important basis.At present, the prestressed concrete cable-stayed bridge is one of the important bridgeto meet the bridge across the ability and the use of the single cable plane but also to inc-rease the good and beautiful bridges. Among these single cable-stayed bridge, the mainbeam with inverted triangle is one of the important cross-section for the singlecable-stayed bridge,and it will bring design of the single cable-stayed bridge to a newlevel. The stress state caused by a variety of fections such as single cable plane, widesection, long segment, inverted triangle cross section and other factors sets a seriouschallenge to the choice of equipment for pouring concrete,it has been a major obstaclefor these similar bridge type on the path of development.As the development of thepouring concrete,the combined traveler researched by engineer has high value onresearch for this type of the single cable-stayed.The front and rear combined traveler has been used to the single cable-stayed for thefirst time, it is designed to meet the need of the construction technology which bothneed the fulcrum in the front of the traveler and the fulcrum in the back of thetaraveler,and it has summed up the advantages of the prestressed concrete cable-stayedusing thepull-type cable cantilever construction, and it also solves the single cable planecable-stayed bridge construction horizontal stability problem. For example, ChongqingShuangbei Jialing River Bridge has the feature such as single cable plane, wide section,long segment, inverted triangle and segmental weight characteristics, and this paper willanalysis the traveler which has fulcrum in the front of the itself and the fulcrum in theback of itself. We grasp the some valuable conclusions such as each construction phasedisplacement, stress and strain, cable force change and traveler strength, rigidity,stability are in line with the requirements, it also has very good reference value for thesame type of bridge construction.