Installation Method of High-altitude Inserted Square Pipe

Abstract

The present invention relates to the technical field of building construction, and specifically to a method for installing a high-altitude embedded square pipe. In this method, the main body of the lifting mechanism is provided in a supporting manner with the box girder. Therefore, after lifting, the square pipe enters the embedded installation position below the butt weld of the box girder, without the need for secondary adjustment, which can simplify the construction steps. Compared with the multiple adjustments of the original construction method, the construction efficiency is improved; in addition, the finished product protection of the square pipe is achieved. Since the lifting stage is completed entirely on the supporting plate, there is no need to add lifting lugs, avoiding on-site high-altitude grinding and painting. Compared with the previous methods, this device only requires two people to cooperate. The construction stage is simple and fast, without the need for construction personnel to stand in the high-altitude cage for multiple manual alignments, improving the construction safety.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly to a method for installing a high-altitude embedded square pipe. Background Art

[0002] The steel beam is an important component for transferring the load on the beam to the foundation. In the roof structure, the main body of the box girder and the square pipe below it jointly form the roof beam, which bears and transfers the load of all secondary trusses. During the installation of the box girder, since it is the main load-bearing component of the roof, the design general specifications require that the butt weld between the main body of the box girder and the steel column be a first-class full penetration weld. During the installation process, in order to ensure the weld quality, usually the box girder is welded first, and after the welding is completed and the flaw detection is qualified, the embedded installation work of the lower square pipe can be carried out.

[0003] Currently, during the construction of the double-decked three-dimensional railway station building, since there is a train track layer below the embedded installation position of the square pipe and there is a height difference between it and the platform, the scissor lift cannot be driven to the embedded installation position, so only the tower crane can be used for the embedded installation of the square pipe. And there are cross operations among various professional construction teams, which leads to the need for the tower crane to be shared by the civil engineering construction team and the metal roof construction team for the embedded installation of the square pipe, resulting in slow construction progress. At the same time, in order to facilitate the embedded installation of the square pipe, lifting lugs are usually welded additionally on both sides of the square pipe for convenient hoisting. Correspondingly, after the square pipe is installed, the lifting lugs need to be removed and the surface needs to be polished and painted, which is not conducive to the protection of the finished steel components and cost control. Summary of the Invention

[0004] In view of the above problems, an embodiment of the present invention provides a method for installing a high-altitude embedded square pipe.

[0005] On the one hand, an embodiment of the present invention provides a method for installing a high-altitude embedded square pipe, including:

[0006] S1. After the butt weld of the box girder is welded, a middle frame with a width adapted to the box girder is fabricated according to the design dimensions of the box girder;

[0007] S2. A plurality of guide rods with a designed length are cut from round steel, and the guide rods are welded in two rows on one side of the middle frame, and the distance between the two rows of guide rods is adapted to the width of the box girder;

[0008] S3. Two top rods respectively adapted to the length and width of the middle frame are cut out from angle steel, and the two top rods are welded into a cross-shaped top frame. Then, the top frame is fixed on the other side of the middle frame using round steel, thereby completing the fabrication of the main body of the lifting mechanism;

[0009] S4. At the embedded installation position, the two rows of guide rods are sleeved on both sides of the box girder, and the main body of the lifting mechanism is slowly lowered until the middle frame falls on the top surface of the box girder;

[0010] S5. Install a jacking mechanism on the box girder and below the top frame. At the same time, detachably install a support plate between the bottoms of each guide rod and place the square pipe on the support plate;

[0011] S6. Use the jacking mechanism to jack up the main body of the lifting mechanism, thereby driving the square pipe upward until it is pushed into the inlay installation position below the box girder and welded and fixed;

[0012] S7. Temporarily fix the main body of the lifting mechanism, remove the jacking mechanism and demolish the support plate below, and move the main body of the lifting mechanism, the jacking mechanism and the support plate to the next inlay installation position for installing the square pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In the case where a boom truck or a scissor lift cannot be used, the inlay installation operation of the square pipe can be completed without occupying the tower crane, improving the operation efficiency; during the installation process of the square pipe, the square pipe will not be damaged, and there is no need for later repair, which speeds up the construction progress and saves the construction cost.

[0014] Optionally, when detachably installing the support plate in S5, pin holes can be opened at the relative positions of the bottoms of each guide rod and the side surface of the support plate, and the support plate can be detachably installed at the bottom of the guide rod by using a pin.

[0015] Optionally, when temporarily fixing the main body of the lifting mechanism in S7, jacking holes can be opened at the positions above the top surface of the box girder on each guide rod, and a support rod can be inserted into the jacking holes between the two opposite guide rods to support the main body of the lifting mechanism on the box girder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and do not limit the present invention. In the drawings:

[0017] Figure 1 is a schematic flow chart of a method for installing a high-altitude inlay square pipe provided by an embodiment of the present invention;

[0018] Figure 2 is a schematic structural diagram of the layout structure of a box girder and a square pipe provided by an embodiment of the present invention;

[0019] Figure 3 is a schematic structural diagram of the assembly structure of the main body of the lifting mechanism and the support plate provided by an embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of the setting structure of the jacking mechanism, the main body of the lifting mechanism and the support plate on the box girder provided by an embodiment of the present invention.

[0021] Among them, box girder 1, butt weld 2, intermediate frame 3, guide rod 4, top frame 5, inlay installation position 6, jacking mechanism 7, support plate 8, pin 9. Detailed implementation mode

[0022] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in combination with the implementation modes and the accompanying drawings. Herein, the illustrative implementation modes of the present invention and their descriptions are used to explain the present invention, but do not limit the present invention.

[0023] See Figures 1-4 , a method for installing a high-altitude embedded square pipe provided by an embodiment of the present invention includes:

[0024] S1. After the butt weld 2 of the box girder 1 is welded, a middle frame 3 with a width adapted to the box girder 1 is manufactured according to the design dimensions of the box girder 1;

[0025] S2. A plurality of guide rods 4 with a designed length are cut from round steel, and the guide rods 4 are welded in two rows on one side of the middle frame 3, and the distance between the two rows of guide rods 4 is adapted to the width of the box girder 1;

[0026] S3. Two top rods respectively adapted to the length and width of the middle frame are cut out by using angle iron, and the two top rods are welded into a cross-shaped top frame 5. Thereafter, the top frame 5 is fixed to the other side of the middle frame 3 by using round steel, thereby completing the production of the main body of the lifting mechanism;

[0027] S4. At the embedded installation position 6, the two rows of guide rods 4 are sleeved on both sides of the box girder 1 and the main body of the lifting mechanism is slowly lowered until the middle frame 3 falls on the top surface of the box girder 1;

[0028] S5. A jacking mechanism 7 is arranged on the box girder 1 and below the top frame 5. At the same time, a supporting plate 8 is detachably installed between the bottoms of the respective guide rods 4, and the square pipe is placed on the supporting plate 8; when the supporting plate 8 is detachably installed, pin holes can be opened at the relative positions of the bottoms of the respective guide rods 4 and the side surface of the supporting plate 8, and the supporting plate 8 is detachably installed at the bottom of the guide rod 4 by using a pin 9.

[0029] S6. The main body of the lifting mechanism is jacked up by the jacking mechanism 7, thereby driving the square pipe upwards until it is pushed into the embedded installation position 6 below the box girder 1 and welded and fixed;

[0030] S7. The main body of the lifting mechanism is temporarily fixed, the jacking mechanism 7 is removed, and the lower supporting plate 8 is removed. The main body of the lifting mechanism, the jacking mechanism 7 and the supporting plate 8 are moved to the next embedded installation position 6 for installing the square pipe.

[0031] When the main body of the lifting mechanism is temporarily fixed, jacking holes can be opened on the respective guide rods 4 at positions above the top surface of the box girder 1, and a support rod is inserted into the jacking holes between the two opposite guide rods 4, thereby erecting the main body of the lifting mechanism on the box girder 1.

[0032] In a specific implementation, the length of the intermediate frame 3 can be adapted to the length of the patching installation position 6. Four guide rods 4 are provided and are respectively arranged at the four corner positions of the intermediate frame 3. The distance between two guide rods 4 in the length direction is the width of the square pipe. When the square pipe is subsequently patched and installed, the square pipe can be stuck between two guide rods 4 in the length direction, and two groups of guide rods 4 in the width direction are stuck on both sides of the box girder 1. During the process of the lifting mechanism main body being in place, after adjusting the two groups of guide rods 4 in the length direction to be aligned with both sides of the patching installation position 6, it can be ensured that the square pipe can be directly aligned with the patching installation position 6. The lifting mechanism main body can drive the square pipe to be directly stuck into the patching installation position 6, ensuring the success of the first patching alignment and improving the installation efficiency.

[0033] In the solution provided by the embodiment of the present invention, the lifting mechanism main body is provided in a supporting manner with the box girder. Therefore, after lifting, the square pipe enters the patching installation position below the butt weld of the box girder, and no secondary adjustment is required, which can simplify the construction steps. Compared with the multiple adjustments of the original construction method, the construction efficiency is improved; in addition, the finished product protection of the square pipe is achieved. Since the lifting stage is all completed on the supporting plate, no lifting lugs need to be added, avoiding on-site high-altitude grinding and painting. Compared with the previous methods, this method only requires two people to cooperate, and the construction stage is simple and fast. There is no need for construction workers to stand on the high-altitude cage for multiple manual butt joints, improving the construction safety.

[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.

Claims

1. A method for installing high-altitude embedded square tubes. It is characterized in that include: S1. After the box beam butt weld is completed, an intermediate frame with a width matching the box beam is manufactured according to the design dimensions of the box beam; S2. Use round steel to cut multiple guide rods of designed length, and weld the guide rods in two rows on one side of the middle frame. The distance between the two rows of guide rods should be adapted to the width of the box beam. S3. Use angle iron to cut out two top rods that are respectively adapted to the length and width of the middle frame, and weld the two top rods into a cross-shaped top frame. Then use round steel to fix the top frame to the other side of the middle frame, thereby completing the production of the main body of the lifting mechanism; S4. Put two rows of guide rods on both sides of the box beam at the patching installation position and slowly lower the lifting mechanism body until the middle frame falls on the top surface of the box beam; S5. A lifting mechanism is arranged on the box beam and below the top frame, and a support plate is detachably installed between the bottoms of the guide rods and the square tube is placed on the support plate; S6. Lift the main body of the lifting mechanism through the lifting mechanism, thereby driving the square tube upward until it is pushed into the installation position below the box beam and welded and fixed; S7. Temporarily fix the main body of the lifting mechanism, remove the jacking mechanism and remove the supporting plate below, and move the main body of the lifting mechanism, the jacking mechanism and the supporting plate to the next patch installation position for square tube installation.

2. A method for installing high-altitude embedded square pipes as described in claim 1, It is characterized in that When the support plate is detachably installed in S5, pin holes are provided at the bottom of each guide rod and at the relative position of the side of the support plate, and the support plate is detachably installed at the bottom of the guide rod using a latch.

3. A method for installing high-altitude embedded square pipes as described in claim 1, It is characterized in that When the lifting mechanism body is temporarily fixed in S7, a socket is opened on each guide rod above the top surface of the box beam, and a support rod is inserted into the socket between two opposite guide rods to set the lifting mechanism body on the box beam.

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