General construction method for partially ground-anchored cable-stayed suspension bridge

Abstract

The invention discloses a general construction method for a partially ground-anchored cable-stayed suspension bridge, which belongs to the technical field of bridge construction. According to general construction method for the partially ground-anchored cable-stayed suspension bridge, a cable-stayed area girder section and a suspension area girder section of the cable-stayed suspension bridge are simultaneously erected and constructed; before the construction of the cable-stayed suspension bridge, a reasonable completed bridge state of the cable-stayed suspension bridge is determined by using a reasonable completed bridge state determining method which takes stiffness distribution into consideration; and during the construction of the cable-stayed suspension bridge, the closing of a cable-stayed area girder section girder and a suspension area girder section girder is finished by using a closing method for the cable-stayed suspension bridge. As the cable-stayed suspension bridge is erected by using the general construction method disclosed by the invention, the girder erecting speed can be effectively increased, a problem that solidified parts formed after a pylon and girder temporarily solidifies bears a greater horizontal force can be avoided, the construction period is greatly reduced and the construction strength is reduced.

Description

technical field [0001] The invention relates to a construction method of a cable-stayed and suspension-cable cooperative system bridge, which belongs to the technical field of bridge construction, and in particular relates to an overall construction method of a partial ground-anchor cable-stayed and suspension-cable cooperative system bridge. Background technique [0002] There are three main forms of cable-supported bridges, cable-stayed bridges, suspension bridges, and cable-stayed-suspension cooperative system bridges. The main girder of a long-span cable-stayed bridge needs to bear the huge axial component force transmitted by the cable. At the same time, in order to ensure the efficiency of the cable-stayed girder, considering the nonlinear sag effect of the cable-stayed cable, the height of the cable tower increases more. Fast, the strength and stability of the main girder and the cable tower become the main factors restricting its spanning ability. [0003] The main ...

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Problems solved by technology

[0008] The present invention proposes improvements to the problems existing in the above-mentioned prior art, that is, the technical problem to be solved by the present invention is to provide an overall construction method for bridges with partial ground anchor cable-stayed and suspension-cable cooperative system bridges. Accurately determine the reasonable completion state of the superstructure of the part of the ground-anchor cable-stayed and cable-suspension cooperative system bridge with a main span of 1000m, and can also quickly and efficiently complete the erection and closing of the cooperative system bridge, which solves the problem of when the cable-stayed and suspension-cable cooperative system bridge is closed Existing problems such as the design difficulty of the temporary consolidation of the tower beam, the force of the cable-stayed part of the structure cannot be guaranteed, the large height difference and the uneven corner of the closing mouth, etc.

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