CN211571413U - Fixing device for cable-stayed bridge rotation construction - Google Patents

Abstract

The utility model discloses a fixing device for swivel construction of a cable-stayed bridge. Stands, self-adaptive jacks, trolley frames, roller trolleys and slides are vertically arranged between the bearing platform and the lower bearing platform. Brake bases are arranged on both sides of the roller trolley. The adjustment mechanism on the base is composed of a magnetic base. By adjusting the position of the upward adjustment rod, the upper inclined abdominal rod and the lower inclined abdominal rod in the braking base, and adjusting the height of the receiving seat in the braking base, the brake base can be rotated in the opposite direction. The effective fixation of the roller trolley in the body system; the adsorption force between the magnetic base and the slideway can overcome the movement of the braking system due to the too small frictional force of the slideway; the upper platform and the lower platform are fixedly connected by a number of embedded I-beams The bearing platform is fixed and connected together, so that the construction and fixation of the swivel cable-stayed bridge is more reliable.

Description

A fixed device for swivel construction of cable-stayed bridge

technical field

The utility model relates to the technical field of bridge construction, in particular to a fixing device for swivel construction of a cable-stayed bridge.

Background technique

Bridge swivel construction technology is a construction method in which all or part of the beam body is pre-assembled or poured at a position deviating from the bridge position to form a temporary stable structure, and then rotated into place with the help of a rotating device. With the gradual maturity of the swivel construction technology, it is widely used in the construction of cross-valley bridges such as trunk highways, expressways, and railways in various provinces in my country. In the construction of bridges across railway lines, in order to minimize the impact of construction on the operation of railway lines, the swivel construction method has also attracted the attention of project builders.

At present, the support feet and steel plates are mostly used in the construction of the bridge plane rotation. The low friction of the slideway is used for the rotation, and the traction cable is used to provide the turning torque to realize the rotation. However, when the support feet are in direct contact with the slideway, the contact surface will slide. Friction, whose mechanical properties are inferior to rolling friction, requires more resources; the use of traction cables to provide torque can easily cause eccentricity and cause deviation, and the overall mechanical properties are difficult to grasp. In addition, in this method, in order to ensure that the turntable and the spherical hinge structure do not move during the construction of the superstructure, steel wedges are often used to temporarily fix the upper turntable that is plugged between the concrete-filled steel tubular support feet and the slideway, and the stability of the construction is not well considered. , and the steel wedge will move in the low-friction annular slideway under eccentric pressure, affecting the stability and safety of construction.

In view of this, a fixing device for swivel construction of a cable-stayed bridge is proposed, which can effectively fix the roller trolley in the swivel system through the braking base, and overcome the problem of excessive sliding friction due to the adsorption force between the magnetic base and the slideway. As a result of the movement of the brake base, pre-embedded I-beams are arranged between the upper and lower platforms to connect the upper and lower platforms together and play a fixed role, which can improve the construction accuracy of the swivel and reduce the construction safety. Risk is important.

Utility model content

The purpose of the utility model is to provide a fixing device for the swivel construction of the cable-stayed bridge.

In order to effectively solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is as follows:

A fixing device for swivel construction of a cable-stayed bridge includes a structural main body, the structural main body includes an upper platform and a lower platform, the upper platform and the lower platform are connected by pre-embedded I-beams, and the Between the upper bearing platform and the lower bearing platform, there are upright feet, self-adaptive jacks, a trolley frame, a roller trolley and a slideway. There are brake bases on both sides of the roller trolley, and the brake base is formed by the base. It is composed of an adjustment mechanism and a magnetic base arranged on the base. The adjustment structure includes a vertical adjustment rod and a hypotenuse support rod. The vertical adjustment rod is composed of an upward adjustment rod and a downward adjustment rod. The rod is composed of an upper inclined web rod and a lower inclined web rod, and a receiving seat is provided at the intersection of the vertexes of the upward adjustment rod and the upper inclined web rod.

In particular, the support feet are connected in contact with the lower bottom surface of the upper platform, and a pad is provided between the upper platform and the support feet.

In particular, the roller trolley is connected to the lower platform in a contact manner, a slideway is provided on the lower platform, and the roller trolley slides in the slideway.

In particular, the base is welded with angle steel, is located on the slideway, is in the shape of a rectangular frame, and is arranged on both sides of the roller trolley, and the adjusting mechanism is arranged on the frame of the base on both sides.

In particular, the structural body includes a plurality of bolts, fixing holes and penetration holes, the bolts are high-strength bolts, and the bolts are locked and connected to the fixing holes, namely:

The upper oblique web rod and the lower oblique web rod are connected by bolts;

The lower oblique web rod and the base are connected by bolts;

The trolley frame and the roller trolley are connected by bolts;

The self-adaptive jack and the support feet are connected by bolts;

The trolley frame and the self-adaptive jack are connected by bolts.

Particularly, the magnetic base is arranged in the middle of the base.

In particular, the trolley frame and the self-adaptive jack form a load-bearing outrigger structure.

In particular, the base is assembled and welded by angle steel, the lowering rod is connected to the base by welding, the receiving seat is connected to the upward adjusting rod by welding, and the upper inclined web rod is connected to the receiving seat by welding.

In particular, the upward adjustment rod is sleeved inside the downward adjustment rod, and a bolt rod and a penetrating hole are arranged to realize the connection of the holes.

The beneficial effects of the utility model are as follows: the fixing device for the swivel construction of the cable-stayed bridge provided by the utility model can adjust the position of the up-adjusting rod, the upper inclined web rod and the lower inclined web rod in the braking base, and adjust the position of the adjusting rod in the braking base. The height of the bearing seat can realize the effective fixing of the brake base to the roller trolley in the swivel system; through the adsorption force between the magnetic base and the slideway, it can overcome the movement of the brake system caused by the too small frictional force of the slideway; The pre-embedded I-beam fixedly connects the upper cap and the lower cap, and the upper and lower caps are fixedly connected together, which is more reliable for the construction and fixation of the swivel cable-stayed bridge. wide.

The present utility model will be described in detail below with reference to the accompanying drawings.

Description of drawings

Fig. 1 is the structural front view of the utility model embodiment;

Fig. 2 is the structural exploded view of the embodiment of the utility model;

3 is a schematic structural diagram of a braking base according to an embodiment of the present invention;

FIG. 4 is an exploded view of the structure of the braking base according to the embodiment of the present invention.

Detailed ways

Example 1:

As shown in FIGS. 1-4 , the fixing device for the swivel construction of the cable-stayed bridge disclosed in this embodiment includes a structural main body, and the structural main body includes an upper platform 10 and a lower platform 1 . The upper platform 10 and The lower platform 1 is connected with a pre-embedded I-beam 3, and the upper platform 10 and the lower platform 1 are vertically provided with supporting feet 8, self-adaptive jacks 7, supporting feet 8, trolley frames 6, and rollers. The trolley 4 and the slideway 2, the roller trolley 4 is provided with a brake base 5 on both sides, and the brake base 5 is composed of a base 15, an adjustment mechanism and a magnetic base 16 arranged on the base 15, so The adjustment mechanism includes a vertical adjustment rod and a hypotenuse support rod. The vertical adjustment rod is composed of an upward adjustment rod 12 and a downward adjustment rod 11. The hypotenuse support rod is composed of an upper inclined web rod 13 and a lower inclined web rod 14. Moreover, a receiving seat 19 is provided at the intersection of the apex of the upward adjustment rod 12 and the upper inclined web rod 13 .

The support feet 8 are connected to the lower bottom surface of the upper platform 10 in contact with each other, and a gasket 9 is provided between the upper platform 10 and the support feet 8 . The roller trolley 4 is connected in contact with the lower platform 1 , the lower platform 1 is provided with a slideway 2 , and the roller trolley 4 slides in the slideway 2 . The base 15 is welded by angle steel, is located on the slideway, is in the shape of a rectangular frame, and is arranged on both sides of the roller trolley, and the adjustment mechanism is arranged on the base 15 . The structural body includes a plurality of bolts 17 and fixing holes 20, the bolts 17 are high-strength bolts, and the bolts 17 are locked and connected to the fixing holes 20, namely:

The upper oblique web bar 13 and the lower oblique web bar 14 are connected by bolts 17; the lower oblique web bar 14 and the base 15 are connected by bolts 17; the trolley frame 6 and the roller The trolleys 4 are connected by bolts 17 ; the self-adaptive jack 7 and the support feet 8 are connected by bolts 17 ; the trolley frame 6 and the self-adaptive jack 7 are connected by bolts 17 . The magnetic base 16 is arranged in the middle of the base 15 . The trolley frame 6 and the self-adaptive jack 7 form a load-bearing outrigger structure. The base 15 is assembled and welded by angle steel, the lower rod 11 is welded to the base 15, the receiving seat 19 is welded to the upward adjustment rod 12, and the upper inclined web rod 13 is connected to the receiving seat 19 Solder connections. The upward adjustment rod 12 is sleeved inside the downward adjustment rod 11 , and a bolt rod 18 and a penetration hole 21 are arranged to realize the connection of the holes.

The applicant declares that, on the basis of the above-mentioned embodiments, those skilled in the art combine a certain step of the above-mentioned embodiments with the technical solutions in the content part of the utility model, thereby generating a new method, which is also the scope of the record of the present utility model. On the one hand, in order to make the description concise, the present application will not list other implementations of these steps.

In this example:

Set one lower bearing platform 1, one slideway 2, several pre-embedded I-beams 3, one roller trolley 4, two sets of brake bases 5, one trolley frame 6, and 7 adaptive jacks. One set, the support foot 8 is a set, the cushion block 9 is a piece, the upper platform 10 is a set, the lowering rod 11 is four sets, the rising rod 12 is four sets, the upper oblique abdominal rod 13 is four sets, and the lower oblique abdominal rod There are four sets of 14, two sets of base 15, four magnetic bases 16, several high-strength bolts 17, four sets of bolts 18, four sets of receiving seats 19, several fixing holes 20 and several penetrating holes 21. Install the slideway 2 , the trolley frame 6 , the self-adaptive jack 7 , the support feet 8 , and the cushion block 9 in place according to the design requirements, and use the brake base 5 to temporarily fix the roller trolley 4 .

The specific implementation process is as follows:

The handle switch of the magnetic base 16 in the brake base 5 is set to the off state, and the brake base 5 is in a movable state at this time. The positions of the upward adjustment rod 12 , the upper inclined web rod 13 and the lower inclined web rod 14 in the movable base 5 ensure that the receiving seat 19 is in close contact with the steel plate on the top surface of the roller trolley 4 . When the handle switch is turned on, the magnetic base 16 forms a strong magnetic field, which is adsorbed on the steel plate of the slideway. Release the temporary fixation of the roller trolley 4 .

Each of the braking bases 5 can be provided with multiple sets of the magnetic bases 16 to ensure the stability of the braking base 5 . The specific position of the angle steel at the magnetic base 16 depends on the size of the magnetic base 16 . , solder it first. The lowering rod 11 and the raising rod 12 are provided with a number of penetrating holes, and the upper slanting web rod 13, the lower sloping webbing rod 14 and the base 15 are provided with a number of fixing holes 20, so as to facilitate the For the adjustment of the height of the bearing seat 19 in the brake base 5, the upper sloping web bar 13 and the lower sloping web bar 14 are connected with the bearing seat 19 and the base 15 by the high-strength bolts 17, A closed triangular structure is formed, which improves the stability and flexibility of the brake base.

The above-mentioned fixing device also includes the following steps:

S1: constructing the lower cap 1, and installing the embedded I-beam 3 before the concrete pouring of the lower cap 1;

S2: pouring the concrete of the lower cap 1, pouring one end of the pre-embedded I-beam 3 into the concrete of the lower cap 1, and installing it on the lower cap 1 after the component reaches the strength the slideway 2;

S3: Set up a temporary bracket, and install the template and the upper turntable of the upper platform 10;

S4: Install the roller trolley 4, the trolley frame 6, the self-adaptive jack 7, the support feet 8 and the pad 9;

S5: Trial operation of the swivel system;

S6: Use the brake base 5 to brake and fix the roller trolley 4 on the slideway 2;

S7: Carry out the construction of the upper cap 1 under temporary support, and pour the other end of the pre-embedded I-beam 3 into the concrete of the upper cap 1, so that the pre-embedded I-beam 1 and the brake base 5 to achieve temporary fixed double insurance;

S8: After each component meets the strength requirements, remove the temporary support, and continue to construct the pier and the swivel part;

S9: After the strength of the pier and the swivel part meet the requirements, cut the pre-embedded I-beam 3 and remove the brake base 5 to release the temporary fixing device and perform the formal swivel.

The applicant also declares that the present utility model will illustrate the implementation method and device structure of the present utility model through the above-mentioned embodiments, but the present utility model is not limited to the above-mentioned embodiments, that is, it does not mean that the present utility model must rely on the above-mentioned method and structure. to be implemented. Those skilled in the art should understand that any improvement to the present invention, the equivalent replacement of the implementation method selected by the present invention, the addition of steps, the selection of specific methods, etc., all fall within the scope of protection and disclosure of the present invention. Inside.

This embodiment is different from the traditional technology in that:

By adjusting the position of the upward adjustment rod, the upper inclined web rod and the lower inclined web rod in the braking base, and adjusting the height of the bearing base in the braking base, the effective fixing of the braking base to the roller trolley in the swivel system can be realized; The adsorption force between the base and the slideway can overcome the movement of the braking system caused by the too small frictional force of the slideway; the upper platform and the lower platform are fixedly connected by a number of embedded I-beams, and they are fixedly connected together. The construction and fixation of the swivel cable-stayed bridge is more reliable, the structure is reasonable, the structure is simple, flexible and light, and the trial range is wide.

The present invention is not limited to the above-mentioned embodiments, and all the embodiments adopting structures and methods similar to those of the present invention to achieve the purpose of the present invention are within the protection scope of the present invention.

Claims (9)

1. The utility model provides a fixing device that cable-stay bridge turned construction, a serial communication port, including a main structure body, main structure body includes cushion cap and lower cushion cap, go up the cushion cap and connect with pre-buried I-steel down the cushion cap, just go up the cushion cap and be equipped with spike, self-adaptation jack, platform frame, gyro wheel dolly and slide down between the cushion cap vertical type, gyro wheel dolly both sides are equipped with the braking base, the braking base by the base and set up in adjustment mechanism and magnetic base on the base constitute, adjustment mechanism includes vertical type accent pole and hypotenuse bracing piece, the vertical type accent pole is become by last accent pole and down accent pole, the hypotenuse bracing piece comprises last diagonal web member and lower diagonal web member, just the summit intersection of going up accent pole and last diagonal web member is equipped with accepts the seat.

2. The cable-stayed bridge swivel construction fixing device according to claim 1, wherein the brace is in contact connection with the lower bottom surface of the upper bearing platform, and a cushion block is arranged between the upper bearing platform and the brace.

3. The cable-stayed bridge swivel construction fixing device according to claim 1, wherein the roller trolley is in contact connection with the lower bearing platform, a slide way is arranged on the lower bearing platform, and the roller trolley slides in the slide way.

4. The cable-stayed bridge swivel construction fixing device according to claim 1, wherein the base is formed by welding angle steels, is positioned on the slideway, is in a rectangular frame shape, is arranged on two sides of the roller trolley, and the adjusting mechanism is arranged on the base frames on the two sides.

5. The cable-stayed bridge swivel construction fixing device according to claim 1, wherein the structural body comprises a plurality of bolts, fixing holes and penetrating holes, the bolts are high-strength bolts, and the bolts are connected with the fixing holes in a locking manner, that is:

the upper inclined web member is connected with the lower inclined web member through a bolt;

the lower inclined web members are connected with the base through bolts;

the trolley frame is connected with the roller trolley through bolts;

the self-adaptive jack is connected with the supporting foot through a bolt;

the bogie frame is connected with the self-adaptive jack through a bolt.

6. The cable-stayed bridge swivel construction fixing device according to claim 1, wherein the magnetic base is arranged in the middle of the base.

7. The fixing device for cable-stayed bridge swivel construction according to claim 1, wherein the trolley frame and the adaptive jack form a force-bearing support leg structure.

8. The fixing device for the swivel construction of the cable-stayed bridge as claimed in claim 1, wherein the base is assembled and welded by angle steel, the lower adjusting rod is welded to the base, the bearing seat is welded to the upper adjusting rod, and the upper diagonal web member is welded to the bearing seat.

9. The cable-stayed bridge swivel construction fixing device according to claim 1, wherein the upper adjusting rod is internally sleeved in the lower adjusting rod, and a bolt rod and a through hole are arranged to realize duct connection.

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