CN112900234A

CN112900234A - Rotatable trestle and construction method thereof

Info

Publication number: CN112900234A
Application number: CN202110327243.6A
Authority: CN
Inventors: 孙岩; 孙海
Original assignee: China 22MCC Group Corp Ltd
Current assignee: China 22MCC Group Corp Ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-06-04

Abstract

The invention discloses a rotatable trestle and a construction method thereof, and relates to the field of engineering construction trestle. Rotatable trestle, including subgrade box, column and scaffolding, the lower end of the column is fixed on the foundation or embedded parts, the upper end of the column is fixed with a rotating flange, the rotating flange is connected with the middle of the subgrade box, and the detachable scaffolding is fixed around the column and is It is connected with the lower end face of the subgrade box, and the two ends of the subgrade box are respectively padded with backing plates, and the backing plates are in contact with the concrete surface. The invention makes the subgrade box into an integral structure, adjusts the position of the subgrade box by rotating the flange, provides convenient conditions for multi-professional cross-operation construction, greatly reduces the construction progress, and saves time, manpower and materials for building and dismantling the trestle many times. cost.

Description

Rotatable trestle and construction method thereof

Technical Field

The invention relates to the field of engineering construction trestles, in particular to a rotatable trestle and a construction method thereof.

Background

In recent years, the rapid development of railways and airports in China has brought about the emergence of large public works. Particularly, the comprehensive large-scale engineering construction environment is complex, the number of related specialties is large, the cross construction condition of multiple specialties often occurs, and the requirement of each construction machine on roads is high. The site road conditions for simultaneous construction of all specialties are difficult to meet the requirements of all parties, and the overall construction progress is influenced.

The defects of the traditional comprehensive large-scale engineering multi-professional construction are as follows: 1. the construction environment is complex, and various professional projects have different requirements on road conditions, so that roads in various forms are required to be provided; 2. in the traditional construction mode, after one professional project is constructed, the construction of the next professional project is carried out, so that the overall project progress is slow; 3. each specialty needs different construction machines for construction, the requirement on roads in a railway station house is high, and the normal flow of the machines is difficult to ensure through the traditional in-site road arrangement; 4. the traditional trestle bridge is usually built by a scaffold and a wood springboard, so that the building time is long and a large amount of materials are wasted. Due to the fact that the comprehensive large-scale engineering construction environment is complex and multi-professional cross operation is involved, the movable trestle needs to be erected, the requirements of site roads of all construction parties are met, and the engineering construction progress is improved.

Disclosure of Invention

In order to solve the technical problems, the invention provides a rotatable trestle and a construction method thereof, which greatly improve the construction progress of each professional project and provide convenient construction conditions for each professional project.

In order to realize the technical purpose, the device adopts the following scheme: rotatable formula landing stage, including roadbed case, stand and scaffold frame, the stand lower extreme is fixed on basis or built-in fitting, and the upper end of stand is fixed with rotary flange, and rotary flange is connected with roadbed case middle part, can dismantle the scaffold frame fix around the stand and with roadbed case lower extreme face top connection, and the backing plate is established to roadbed case both ends pad respectively, backing plate and concrete face contact.

Compared with the prior art, the device has the beneficial effects that: this device makes overall structure with the roadbed case, through the position of rotatory flange adjustment roadbed case, has saved the time, manpower and the goods and materials cost of setting up many times, demolising the landing stage, provides convenience for different specialty cross operation constructions.

The preferred scheme of the device of the invention is as follows:

the roadbed box comprises I-shaped steel, channel steel and steel plates, wherein the I-shaped steel and the channel steel are fixed into a rectangular frame structure, and the steel plates are welded on six sides of the rectangular frame.

The upright column consists of steel pipes with the diameter of 500mm multiplied by 12mm, and the load bearing capacity of the upright column is 10 t.

In order to realize the technical purpose, the method adopts the following scheme: the construction method of the rotatable trestle comprises the following steps:

s1, arranging an upright post according to the space height of the trestle, wherein the upper end of the upright post is fixedly connected with the rotating flange;

s2, building a temporary scaffold according to the airborne height of the trestle, and using the temporary scaffold as a support system of the trestle;

s3, placing a roadbed box and installing the roadbed box on a set driving route, wherein the lower ends of two sides of the roadbed box are padded with backing plates which are in contact with a concrete floor;

s4, adjusting the elevation of the scaffold to enable each scaffold pipe to be connected with the lower end face of the roadbed box in a jacking mode, bearing most of the load of the machine walking on the standing bridge, and integrally forming a stable trestle system;

s5, when the subsequent operation engineering needs the operation space built by the trestle system, the temporary scaffold and the backing plate are removed, the rotation of the trestle in the 90-degree direction is realized through the rotating flange, and the operation space is provided for other specialties;

and S6, after the team needing the working space finishes the construction, timely rotating the trestle to the initial position, repeating the steps of S2-S4, and enabling the trestle to be continuously communicated for each professional team to use.

Compared with the prior art, the method has the beneficial effects that: the construction method provides convenient conditions for multi-professional cross operation construction, and greatly reduces the construction progress. The method can be realized by only erecting the trestle once, so that the waste of personnel and materials for erecting and dismantling the trestle for multiple times is saved.

Drawings

Fig. 1 is a schematic structural diagram of a rotatable trestle according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a pillar according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a roadbed box provided by the embodiment of the invention;

fig. 4 is a first usage state diagram of the rotatable trestle according to the embodiment of the invention;

fig. 5 is a second usage state diagram of the rotatable trestle according to the embodiment of the invention;

labeled as: 1. a roadbed box; 11. i-shaped steel; 12. channel steel; 13. a steel plate; 2. a column; 3. rotating the flange; 4. and (5) scaffold.

Detailed Description

The present invention will be described in detail with reference to the following embodiments in order to fully understand the objects, features and effects of the invention, but the present invention is not limited thereto.

Referring to fig. 1 to 3, the rotatable trestle provided by the invention comprises a roadbed box 1, an upright post 2, a scaffold 4 and the like, wherein the lower end of the upright post 2 is fixed on a foundation or an embedded part, the upper end of the upright post 2 is fixed with a rotating flange 3, and the upper end of the rotating flange 3 is fixedly connected with the middle part of the lower end surface of the roadbed box 1. The roadbed box 1 is composed of I-shaped steel 11, channel steel 12 and steel plates 13, the I-shaped steel 11 and the channel steel 12 are welded into a rectangular frame structure, and the steel plates 13 are fixed on six sides of the rectangular frame. The detachable scaffold 4 is fixed around the upright post 2, and the top of the detachable scaffold 4 is connected with the lower end face of the roadbed box 1. The two ends of the lower end face of the roadbed box 1 are respectively padded with a base plate, and the base plates are effectively contacted with a concrete face.

In the field construction process, the vertical column 2 is preferably formed by selecting steel pipes with the diameter of 500mm multiplied by 12mm, the length of the vertical column 2 is adjusted by the height of a trestle, and the bearable load capacity of the vertical column 2 with the inner diameter of 500mm is 10 t. The scaffold 4 is composed of bowl-buckled scaffold pipes with the diameter of 48 multiplied by 3mm, the vertical rod longitudinal distance of the scaffold 4 is 0.6m, the vertical rod transverse distance is 0.6m, and the horizontal pull rod step distance of the scaffold 4 is 0.6 m. The backing plate is a 20mm thick plate.

The construction method of the rotatable trestle comprises the following steps:

s1, welding and manufacturing the roadbed box 1, arranging the upright post 2 according to the space height of the trestle, effectively welding the upper end of the upright post 2 with the rotating flange 3, and effectively fixing the lower end of the upright post 2 with the embedded part.

And S2, setting up the temporary scaffold 4 according to the space height of the trestle, and using the temporary scaffold as a support system of the trestle.

S3, placing the roadbed box 1 and installing the roadbed box on a given forming route, wherein the lower surfaces of two ends of the roadbed box 1 are respectively padded with a backing plate, and the backing plates are effectively contacted with a concrete floor.

S4, adjusting the elevation of the adjustable bracket on the scaffold 4, so that each scaffold pipe is connected with the lower end face of the roadbed box 1 in a jacking way to bear most of the load of the machine walking on the trestle. After the steps are completed and the stable trestle system is integrally formed, walking operation, material transportation and the like in each professional mechanical field can be realized through the rotary trestle in the south-north direction, as shown in fig. 4.

S5, when the subsequent professional engineering needs the operation space built by the trestle, the temporary scaffold 4 and the base plate are detached, the rotation in the 90-degree direction of the trestle is realized through the rotary flange 3, the operation space is provided for other professionals, and walking operation, material transportation and the like in each professional mechanical field can realize the transportation in the east-west direction through the rotatable trestle, as shown in figure 5.

When the small-sized trestle rotation mechanism is applied to a railway platform, the railway platform realizes trestle rotation in the north-south direction and the east-west direction, so that the walking of small-sized vehicles is ensured, and the construction of other specialties is not influenced. When the mechanical material vehicle needs to walk in the north-south direction, the trestle rotates to the north-south direction. When the track is laid in the east-west direction, the temporary scaffold 4 below the trestle is detached and rotated to the east-west direction, so that an operation space is provided for track laying.

When the trestle rotation mechanism is applied to a narrow space, the rotation of the trestle in the south-north and east-west directions is realized in the narrow space, the rotation of the trestle in the south-north and east-west directions is realized, and a large amount of space is saved. When the mechanical material vehicle needs to walk in the north-south direction, the trestle rotates to the north-south direction. When the track is laid in the east-west direction, the trestle is rotated to the east-west direction, and a transportation route in two directions is formed in a short time.

When the device is applied to a large space, the upper layer and the lower layer of the large space are simultaneously constructed with multi-point operation to realize the rotation of the trestle in the south-north and east-west directions. The site construction requirements of all parties are met. And combining the single-group trestles together to form a large-span trestle. The upper strata realizes the construction material transportation, and the lower floor satisfies the construction of other specialty.

Finally, it is noted that: the above-mentioned list is only the preferred embodiment of the present invention, and naturally those skilled in the art can make modifications and variations to the present invention, which should be considered as the protection scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.

Claims

1. a rotatable trestle, comprising a roadbed box, a column and a scaffold, the column lower end is fixed on the foundation or the embedded part, it is characterized in that, the upper end of the column is fixed with a rotating flange, and the rotating flange is connected with the middle of the roadbed box, The detachable scaffolding is fixed around the column and is top-connected with the lower end face of the subgrade box. The two ends of the subgrade box are respectively padd with backing plates, and the backing plates are in contact with the concrete surface.

2. The rotatable trestle according to claim 1 is characterized in that, the subgrade box comprises I-beam, channel steel and steel plate, and the I-beam and the channel steel are fixed into a rectangular frame structure, and the steel plate is welded on six sides of the rectangular frame. .

3 . The rotatable trestle according to claim 1 , wherein the column is composed of Φ500×12mm steel pipe, and the bearing capacity of the column is 10t. 4 .

4. the construction method of the described rotatable trestle of any one of claim 1-3, it is characterized in that, carry out as follows:

S1. Set up the column according to the space height of the trestle, and the upper end of the column is fixedly connected with the rotating flange;

S2. Set up temporary scaffolding according to the airborne height of the trestle as the support system of the trestle;

S3. Place the subgrade box and install it on the established driving route. The lower ends of the two sides of the subgrade box are cushioned with pads, and the pads are in contact with the concrete floor;

S4. Adjust the elevation of the scaffolding, so that each scaffolding pipe is connected to the lower end face of the subgrade box, bears most of the load of the machinery walking on the station bridge, and forms a stable trestle bridge system as a whole;

S5. When the work space for the above-mentioned trestle system is required for the subsequent operation, the temporary scaffolding and backing plate shall be removed, and the 90° direction rotation of the trestle can be realized by rotating the flange, so as to provide work space for other professions;

S6. After the construction of the team that needs the working space is completed, the trestle is rotated to the initial position in time, and the steps of S2~S4 are repeated, and the trestle continues to be opened to traffic for the use of various professional teams.