CN204151665U - A kind of cable-stayed type opens trestle - Google Patents

Abstract

The utility model discloses a cable-stayed open trestle bridge, which comprises four sets of lattice columns, a distribution base is fixed on the top of the lattice columns, support piles are respectively driven inside the lattice columns on both sides, and on the same side At least one reinforced bent temporary pier is set between two groups of lattice columns, and an I-beam beam is welded and fixed on the top of multiple bent piers on the same side. Two identical single-sided bridge superstructures form a The overall bridge superstructure that can be opened, the Bailey sheet includes a fixed section, a rear opening section and a front opening section, a winch is fixed on the distribution base, and the front stay cables connected to two of the four winches on one side The tension end is fixed on the front end of the front opening section of the same side and the tension end of the rear stay cable connected to the other two winches of this side is fixed on the front end of the rear opening section of this side. The adoption of the device can increase 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 trestle bridge structure used in bridge construction with navigation requirements.

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, the patents of publication numbers CN202369929 U and CN202688850U disclose a lifting device, which can only provide limited navigation clearance, and the height limit of its navigation clearance is the height above the water surface of the lattice column and the height of the temporary bridge. Difference.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a cable-stayed open trestle with a wide navigation width, which can provide unlimited navigation clearance, and at the same time, can ensure the flat structure surface of the restored trestle.

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 the four steel pipes of each group of lattice columns are welded and fixedly connected. The distribution base is fixed on the top of each group of lattice columns, support piles are installed on the inner sides of the lattice columns on both sides, and at least one temporary pier for strengthening bent frames is arranged between the two groups of lattice columns on the same side. The reinforced bent-frame temporary pier includes multiple bent-pier pipe piles inserted between two sets of lattice columns on the same side, the bent-pier pipe piles are connected by welding, and the multiple bent-pier pipe piles on the same side The top of the pipe pile is welded and fixed with an I-beam beam. Two identical unilateral bridge superstructures form a whole bridge superstructure that can be opened. Each unilateral bridge superstructure includes multiple Bailey sheets connected to each other. On the upper chord of the Bailey sheet, a plurality of horizontal I-beams arranged at intervals are fixed, and a plurality of longitudinal I-beams arranged at intervals are fixed on the described transverse I-beams. A bridge deck system structure is fixed on the beam, and the plurality of Bailey sheets connected to each other include a fixed section that is welded and fixed on the I-beam beam on the corresponding side through the reinforcing chord of the Bailey sheet. The fixed section The front end is connected to the rear end of the rear opening section extending to the center of the bridge through a hinge, and the front end of the rear opening section is connected to the rear end of the front opening section extending to the center of the bridge through a rotating hinge. Parts are supported on the I-beam beams and support piles respectively. The front ends of the front opening sections on both sides of the bridge are connected by pins when the trestle structure is laid out, and four winches are fixed on each distribution base. The upper and lower limit beams are respectively arranged on the inner side of each lattice column, and the tension ends of the front stay cables connected to two of the four winches on one side are fixed at the front end of the front opening section on the same side and The tension end of the rear stay cable connected to the other two winches on this side is fixed on the front end of the rear opening section on this side, and the front opening section can be turned over and supported on the upper limit beam under the drive of the winch. The rear opening section can be turned over and supported on the lower limit beam under the drive of the winch.

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

(1) The use of cable-stayed structure can increase the allowable navigation clearance of the trestle.

(2) The construction function of the trestle will not be affected after the trestle is leveled.

Description of drawings

Fig. 1 is the structural representation of the cable-stayed open trestle of the utility model.

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

Fig. 3 is a schematic diagram of a cable-stayed open trestle transfer hinge of the present invention.

Fig. 4 is a schematic diagram of the upper structure of the trestle in a cable-stayed open trestle of the present invention.

Fig. 5 is a structural schematic diagram of a temporary pier for reinforcing bent frames of a cable-stayed open trestle bridge according to the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the use of the utility model is further described.

As shown in the accompanying drawings, a cable-stayed open trestle bridge of the present utility model 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. The 4 steel pipes of each group of lattice columns 1 are fixedly connected by welding, preferably the upper and lower parts of the 4 steel pipes of each group of lattice columns 1 are connected by structural welding of diagonal braces and cross braces 2 respectively. A distribution base 3 is fixed on the top of each group of lattice columns 1, and support piles 9 are drilled on the inner sides of the lattice columns 1 on both sides, and at least one reinforcing row is arranged between two groups of lattice columns 1 on the same side. Frame temporary piers 22, as an embodiment of the present utility model, said reinforced bent frame temporary piers 22 include a plurality of bent frame pier pipe piles 24 inserted between two groups of lattice columns 1 on the same side, said The pipe piles 24 of the bent pier are welded and connected, and the steel pipes 23 arranged at intervals up and down are preferably used for horizontal welding connection between the pipe piles 24 of the bent pier, and channel steel 21 is used to connect the adjacent steel pipes 23 between the upper and lower steel pipes The 24 scissors of the bent pier pipe piles are connected to each other by welding. An I-beam beam 13 is welded and fixed on the pile tops of multiple bent pier piles 24 on the same side. Two identical unilateral bridge superstructures form an openable overall bridge superstructure. Each unilateral bridge superstructure Each includes a plurality of Bailey sheets 14 connected to each other, and the Bailey sheets 14 are usually connected by a shaped support sheet 16 . On the upper chord of the Bailey sheet 14, a plurality of horizontal I-beams 17 arranged at intervals are fixed, and a plurality of longitudinal I-beams 18 arranged at intervals are fixed on the described transverse I-beams 17. A bridge deck system structure is fixed on the longitudinal I-beam 18, and the bridge deck system generally includes an embossed steel plate 19 installed on the longitudinal I-beam 18 as a bridge deck. Railing 20 is fixed on flower plate 19. The plurality of Bailey sheets 14 connected to each other includes a fixed section that is welded and fixed on the I-beam beam 13 on the corresponding side through the reinforcing chord 15 of the Bailey sheet. The rear end of the rear opening section 8 extending from the center of the bridge is connected to each other. The front end of the rear opening section 8 is connected to the rear end of the front opening section 7 extending to the center of the bridge through a hinge 12. The rear end of the rear opening section 8 and the front part Respectively supported on the I-beam beam 13 and the supporting pile 9, the front ends of the front opening sections 7 on both sides of the bridge are connected by pins when the trestle structure is laid flat, and four distribution bases are fixed on each distribution base 3 Each winch 4 is provided with upper and lower limit beams 10 on the inner side of each lattice column, and the tension end of the front stay cable 5 connected to two of the four winches 4 on one side is fixed on the same side. The front end of the opening section 7 and the tension end of the rear stay cable 6 connected to the other two winches 4 on this side are fixed on the front end of the rear opening section 8 on this side, and the front opening section 7 can be placed on the front end of the hoisting machine 4. Driven and flipped and supported on the upper limit beam, the rear opening section 8 can be turned and supported on the lower limit beam under the drive of the hoist 4 .

This structure construction method comprises the following steps:

(1) Set two sets of lattice columns on each side of the set bridge deck position, each set of lattice columns is composed of 4 steel pipes, and the 4 steel pipes of each set of lattice columns 1 are welded and fixedly connected. Preferably, the 4 steel pipes of each group of lattice columns 1 are fixedly welded and connected by diagonal braces and cross braces 2 to form a scissors brace, and then a distribution base 3 is installed on the top of each lattice column, and then each distribution base 3 Four winches 4 are installed on the top and the upper and lower limit beams 10 are respectively welded up and down on the inner side of each lattice column;

(2) Insert and drive fixed support piles 9 to the set elevation respectively along the bridge direction on the inner sides of the lattice columns 1 on both sides;

(3) Insert bent pier pipe piles 24 between the two groups of lattice columns 1 on the same side to the set elevation, and then weld and connect the bent pier pipe piles 24 to form at least one reinforced bent frame temporary pier 22. Preferably, the pipe piles 24 of the bent pier are connected by horizontal welding with steel pipes 23 arranged at intervals up and down, and channel steel 21 is used to connect the adjacent pipe piles 24 of the bent pier between the upper and lower steel pipes 23 by scissors welding. , so that the form of scissors bracing is formed between the pipe piles 24 of the bent piers;

(4) Place an I-shaped steel crossbeam 13 on the top of a plurality of bent pier pipe piles on each side. The steel beam is welded to the top of the pipe pile of the bent pier.

(5) Install a unilateral bridge superstructure on each side of the I-beam beam. Two identical unilateral bridge superstructures form an openable overall bridge superstructure. Each unilateral bridge superstructure includes multiple Bailey sheets 14 connected to each other, the plurality of Bailey sheets 14 connected to each other include a fixed section fixed on the I-beam beam 13 on the corresponding side through the reinforcing chord 15 of the Bailey sheet, preferably I-beam The intersecting part of the beam 13 and the fixed section is fixed with a U-shaped piece, and the I-beam beam 13 and the fixed section are welded and fixed; the front end of the fixed section is connected to the rear end of the rear opening section 8 extending to the center of the bridge through a hinge 12, The rear end and front part of the rear opening section 8 are respectively supported on the I-beam beam 13 and the support pile 9, and the front end of the rear opening section 8 is connected to the rear of the front opening section 7 extending to the center of the bridge through a hinge 12. The front ends of the front opening sections 7 on both sides of the bridge are temporarily connected by pins when the trestle bridge structure is laid;

(6) On the upper chord of the Bailey sheet described on each side, a plurality of horizontal I-beams arranged at intervals are laid and fixed, and the preferred horizontal I-beam 17 is connected with the Bailey sheet to prevent sliding , and fixed by full welding;

(7) Lay a plurality of vertical I-beams arranged at intervals on the horizontal I-beam, and the intersection of the horizontal I-beam 17 and the longitudinal I-beam 18 is fixed by full welding, and then fixed on the longitudinal I-beam Bridge deck structure. The bridge deck structure usually includes an embossed steel plate 19 installed on the longitudinal I-beam 18 as a bridge deck, on which the embossed steel plate 19 is fixed with railings 20, the horizontal I-beam 17 and the longitudinal I-beam Steel 18 as distribution beam. The fixing of embossed steel plate 19 can adopt following mode: drill hole on embossed steel plate 19, connect with Bai Lei sheet 14 with bolt, and embossed steel plate 19 and longitudinal I-beam 18 welding fixation.

(8) The tension end of the front stay cable connected to two of the four winches on one side is fixed at the front end of the front opening section on the same side and the rear stay cable connected to the other two winches on this side The tension end is fixed on the front end of the rear opening section of this side, and the front stay cable 5 and the rear stay cable 6 are connected with the front and rear opening sections all the time.

When there is a navigation clearance requirement, start the winch 4 simultaneously, and the cable-stayed bendable opening trestle is opened. After opening to a certain angle, the front opening section 7 will touch the upper limit beam, and at this moment, stop the pulling of the front stay cable 5. Continue to pull the rear stay cable 6 until the rear opening section 8 touches the lower limit beam, at this moment, stop the pulling of the rear stay cable 6. Since the front opening section 7 and the rear opening section 8 are as close as possible to the lattice column 1, unlimited navigation clearance and navigation width can be provided within a certain width of the bridge span at this time, allowing ships 11 to pass through.

When the navigation clearance requirement is canceled, release the front stay cable 5 first, and then release the rear stay cable 6 at the same time when the front opening section 7 is lowered to be level with the rear opening section 8, until the cable-stayed bendable open trestle plane Fall on support pile 9 again.

Claims (4)

1. A cable-stayed open trestle bridge is characterized in that: it includes four groups of lattice columns for vertical load-bearing that are arranged at intervals along the longitudinal bridge to both sides of the bridge deck, and the four steel pipes of each group of lattice columns The distribution base is fixed on the top of each group of lattice columns, supporting piles are installed on the inner sides of the lattice columns on both sides, and at least one reinforcement row is arranged between the two groups of lattice columns on the same side. Temporary piers, the reinforced temporary piers include a plurality of bent pier pipe piles inserted between two groups of lattice columns on the same side, the pipe piles of the bent piers are connected by welding, and the pipe piles on the same side The pile tops of multiple bent piers are welded and fixed with an I-beam beam. Two identical unilateral bridge superstructures form an openable overall bridge superstructure. Each unilateral bridge superstructure includes multiple Connected Bailey sheets, on the upper chord of the Bailey sheets, a plurality of horizontal I-beams arranged at intervals are fixed, and a plurality of longitudinal I-beams arranged at intervals are fixed on the described transverse I-beams, The bridge deck structure is fixed on the longitudinal I-beam, and the plurality of Bailey sheets connected to each other include fixed sections that are welded and fixed on the corresponding side I-beam beams through the reinforcing chords of the Bailey sheets The front end of the fixed section is connected to the rear end of the rear opening section extending to the center of the bridge through a hinge, the front end of the rear opening section is connected to the rear end of the front opening section extending to the center of the bridge through a hinge, and the rear opening section is connected to the rear end of the front opening section extending to the center of the bridge. The rear end and the front part of the opening section are respectively supported on the I-beam beam and the supporting piles. The front ends of the front opening sections on both sides of the bridge are connected by pins when the trestle structure is laid flat. Four winches are fixed, and upper and lower limit beams are respectively set on the inner side of each lattice column. The tension ends of the front stay cables connected to two of the four winches on one side are fixed on the front opening on the same side. The front end of the section and the tension end of the rear stay cable connected to the other two winches on this side are fixed at the front end of the rear opening section on this side, and the front opening section can be turned over and supported at the upper limit under the drive of the winch. On the beam, the rear opening section can be turned over and supported on the lower limit beam under the drive of the winch. 2. The cable-stayed open trestle according to claim 1, characterized in that: the upper part and the lower part between the four steel pipes of each group of lattice columns are respectively connected by welding of diagonal braces and cross braces. 3. The cable-stayed open trestle according to claim 1 or 2, characterized in that: the pipe piles of the bent piers are connected by horizontal welding with steel pipes arranged at intervals up and down, and channel steel is used to connect the upper and lower steel pipes. The adjacent bent pier pipe piles are connected by scissors to welding. 4. The cable-stayed open trestle according to claim 3, characterized in that: the intersecting part of the I-shaped steel beam and the fixed section is fixed by a U-shaped piece, and the I-shaped steel beam and the fixed section are fixed by welding.