CN204151664U - A kind of cable-stayed type opens trestle - Google Patents

Abstract

The utility model discloses a cable-stayed open trestle bridge, which comprises four groups of vertical load-bearing lattice columns, a distribution base is fixed on the top of each group of lattice columns, and a winch is fixed on the distribution base. Horizontal buttress piers are built on the inside of the lattice columns on both sides, and temporary piers with reinforced bent frames are set between the two groups of lattice columns on the same side. Two identical bridge structures on one side extend to the center of the bridge respectively to form an openable The overall bridge structure, each unilateral bridge structure includes a fixed end and an opening section connected to the fixed end through a hinge, the front end of the fixed end of a unilateral bridge structure is fixed on the same side of the reinforced bent temporary pier The rear end and front part of the opening section of the single-sided bridge structure on one side are respectively supported on the temporary piers of the reinforced bent frame and the horizontal pier when they are in the plane position, and the pulling cables drawn from the hoist on the same side are directly pulled to the opening the front end of the segment. This structure increases the navigation clearance of the trestle bridge.

Description

A cable-stayed open trestle bridge

technical field

The utility model relates to the field of bridge engineering construction, in particular to a cable-stayed open trestle bridge.

Background technique

At present, the known bridge construction in waters with navigation needs mainly adopts the portal structure trestle method. This construction method can only allow small and low ships to pass through, and if the navigation clearance is too large, it will cause damage to the construction on both sides of the bridge. The impact makes the transportation inconvenient, which is not conducive to the turnover of construction machinery and materials. In addition, patents with publication numbers CN202369929U and CN202688850U disclose a lifting device that can only provide limited navigation clearance, and the height limit of the navigation clearance is the difference between the height of the lattice column above the water surface and the height of the temporary bridge. Difference.

Contents of the invention

The purpose of the utility model is to overcome the existing technical defects and provide a cable-stayed open trestle bridge which can ensure the unobstructed channel during construction and improve the convenience and economy of construction.

The utility model is achieved through the following technical solutions:

A cable-stayed open trestle bridge, which includes four groups of lattice columns for vertical load-bearing arranged at intervals along the longitudinal bridge to both sides of the bridge deck, and a distribution base is fixed on the top of each group of lattice columns. The hoist is fixed on the distribution base, horizontal buttresses are installed on the inside of the lattice columns on both sides, and at least one temporary pier is set between the two groups of lattice columns on the same side. The bridge structures are respectively extended to the center of the bridge to form a whole bridge structure that can be opened. Each unilateral bridge structure includes a fixed end and an opening section that is connected to the fixed end through a hinge. The front end of the fixed end of a unilateral bridge structure is fixed on the On the temporary pier of the reinforced bent frame on the same side and the rear end and front of the opening section of the unilateral bridge structure on this side are respectively supported on the temporary pier of the reinforced bent frame and the horizontal support pier when the side is in the plane position, the hoist drawn out from the same side The pulling cable is directly pulled to the front end of the opening section on this side.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The use of a cable-stayed structure can increase the navigation clearance of the trestle bridge to ensure smooth navigation of ships with high superstructures.

(2) The construction function of the trestle will not be affected after the trestle is leveled, and the structure surface of the trestle after restoration can be guaranteed to be flat, which is conducive to the turnover of construction equipment and materials between different construction sites, can improve construction efficiency, and save construction costs.

Description of drawings

Fig. 1 is the schematic diagram of trestle open state in a kind of cable-stayed open trestle bridge of the present invention;

Fig. 2 is a schematic diagram of the unopened state of the trestle in a cable-stayed open trestle according to the present invention.

Detailed ways

The use of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in the accompanying drawings, a cable-stayed open trestle bridge of the present invention includes four groups of lattice columns 1 for vertical load-bearing arranged at intervals along the longitudinal bridge to both sides of the bridge deck. A distribution base is fixed on the top of the column, and a hoist 2 is fixed on each distribution base. Horizontal piers 5 are installed on the inner sides of the lattice columns on both sides, and at least A reinforced bent temporary pier, two identical unilateral bridge structures are respectively extended to the center of the bridge to form a whole bridge structure that can be opened, and each unilateral bridge structure includes a fixed end and an opening that is connected to the fixed end through a hinge. Section 4, the front end of the fixed end of a unilateral bridge structure is fixed on the temporary pier of the reinforced bent frame on the same side and the rear end and front part of the open section of the unilateral bridge structure on this side are respectively supported on the reinforced bent frame when they are in the plane position On the temporary pier and the horizontal pier, the pull cable 3 drawn from the winch 2 on the same side is directly pulled to the front end of the opening section on this side.

When there is a navigation clearance requirement, start the hoist 2 simultaneously, open the opening section 4 by the pull cable 3, and allow the ship 6 to pass after opening to reserve a certain navigation width. After the ship 6 passes through, start the hoist 2, release the pull cable 3, and gradually level the open bridge structure until it falls on the horizontal pier 5 again, and restore the normal use of the trestle.

Claims (1)

1. a cable-stayed type opens trestle, it comprises spaced four groups of lattice columns for vertical load-bearing along vertical bridge to bridge floor both sides, it is characterized in that: be fixed with distribution base at the top of each group lattice column, distribute on base at each and be all fixed with hoist engine, horizontal buttress has been set respectively in the inner side of both sides lattice column, between homonymy two groups of lattice columns, be provided with at least one strengthen framed bent Temporary Piers, two identical one-sided bridge constructions extend to a bridge central authorities composition overall bridge construction that can open respectively, the unlatching section that each one-sided bridge construction is included fixed end and is rotatedly connected by turning hinge and fixed end, on the reinforcement framed bent Temporary Piers that the front end of the fixed end of an one-sided bridge construction is fixed on homonymy and the rear end of the unlatching section of the one-sided bridge construction of this side and front portion is supported on respectively when plan-position to be strengthened on framed bent Temporary Piers and horizontal buttress, the hoist engine of the same side direct tractive of drawing rope of drawing is to the front end of the unlatching section of this side.