Mounting method for accurate butt joint of steel grating and embedded part

Abstract

The invention relates to the technical field of building construction, in particular to a mounting method for accurate butt joint of a steel grating and an embedded part, which comprises the following steps: S1, arranging the embedded part and mounting hoisting equipment; s2, the steel grating is hoisted after being assembled on the ground; s3, the steel grating and the embedded part are fixed in batches; in the step S2, after the steel grating is assembled, a total station with a set deviation range value A0 is used for measuring the lifting point positions of the steel grating and the positions of the embedded parts, the measured lifting point coordinates are compared with the coordinates of the embedded parts, and the deviation value Anm between each lifting point and the corresponding embedded part is calculated; the deviation value Anm is compared with the deviation range value A0, so that whether the deviation values Anm between all the lifting points and the embedded parts corresponding to the lifting points are in an acceptable range or not is determined before the steel grating is lifted, whether lifting operation can be carried out subsequently or not is judged, and the situation that the lifting points and the embedded parts are not aligned after lifting is avoided; and the situation that the steel grating needs to descend and the lifting point needs to be adjusted is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to an installation method for accurately docking a steel grille with an embedded part. Background Art

[0002] During the installation of steel grating systems in large-scale construction projects, although the theoretical design is flawless, the idea of ​​accurately pre-assembling the steel grating on the ground and lifting it to the designed elevation to connect with the embedded parts at the bottom of the steel beam seems straightforward, but the challenges faced in actual operation are far more than that. These challenges mainly come from the complexity and uncertainty of on-site construction, which are specifically reflected in the following aspects:

[0003] First, the accumulation of construction errors: in the process of transformation from design drawings to actual construction, each process may introduce errors. For example, material processing accuracy, on-site measurement errors, differences in the technical level of installation workers, etc., will cause the hanging point position of the steel grille to deviate from the expected

[0004] Second, there is the challenge of precision of embedded parts: during the concrete pouring process, embedded parts may be affected by external forces such as concrete flow and vibration, resulting in position displacement or tilt.

[0005] In view of this, we propose an installation method for precise docking of steel grilles and embedded parts. Summary of the invention

[0006] The object of the present invention is to provide an installation method for accurately docking a steel grating with embedded parts, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A method for accurately docking a steel grating with an embedded part comprises the following steps: S1, setting the embedded part and installing a lifting device; S2, lifting after assembling the steel grating on the ground; S3, fixing the steel grating with the embedded part in batches; in step S2, after the steel grating is assembled, using a total station with a set deviation range value A0 to measure the hanging point position of the steel grating and the position of the embedded part, and comparing the measured hanging point coordinates with the embedded part coordinates, and calculating the deviation value A between each hanging point and the corresponding embedded part nm , take the deviation value A nm Compare with the deviation range value A0 to judge the subsequent lifting operation; where n represents the nth row and m represents the mth column.

[0009] As a further solution of the present invention: the deviation value A nm The calculation formula is: where x nm ,y nm 、znm represents the spatial coordinates (x nm ,y nm , z nm ), X nm , Y nm , Z nm Represents the spatial coordinates of the embedded part in the nth row and mth column (X nm , Y nm , Z nm ).

[0010] As a further solution of the present invention: the deviation range value A0 is: 5mm≤A0≤10mm, wherein the deviation value A nm ≤A0, lifting is possible; deviation value A nm ≥A0, adjust the hanging point position and recalculate the deviation value A nm .

[0011] As a further solution of the present invention: the S1, setting the embedded parts and installing the lifting equipment, comprises the following steps:

[0012] S1.1. According to the design drawings, set embedded parts at the bottom of the roof beam;

[0013] S1.2. When the concrete strength at the bottom of the roof beam reaches 100%, remove the formwork and fix the hoist to the embedded parts around the bottom of the roof beam with bolts.

[0014] As a further solution of the present invention: in step S2, the steel grating is assembled by welding a plurality of steel secondary beams in a cross shape, wherein in the transverse direction of the steel grating, a steel secondary beam group consisting of two steel secondary beams is arranged at intervals with a steel secondary beam; in the vertical direction of the steel grating, a single steel secondary beam is arranged at intervals.

[0015] As a further solution of the present invention: in the transverse direction of the steel grating, the spacing between the steel secondary beams in the steel secondary beam group is 0.3-0.4m, and the spacing between the steel secondary beam group and the vertical steel secondary beam is 3-4m; in the vertical direction of the steel grating, the spacing between the transverse steel secondary beams is 2.5-3.5m; the hanging point is set at the intersection of the steel secondary beam group and the transverse steel secondary beam.

[0016] As a further solution of the present invention: the hook of the hoist is fixed on the steel grille hanging point corresponding to the embedded part fixed to the hoist.

[0017] As a further solution of the present invention: the S3, steel grille is fixed to the embedded parts in batches, comprising the following steps:

[0018] S3.1. After lifting the steel grating to the designed height by hoisting, except for the lifting points and embedded parts fixed by the hoist, the rest are fixed between the lifting points and the embedded parts corresponding to the corresponding lifting points by hanging rods;

[0019] S3.2. Remove the hoist and use an aerial lift to install the suspension rod on the lifting points of the removed hoist and the corresponding embedded parts in the same way as the installation of the suspension rod in step S3.1.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the installation method for accurately docking the steel grating with the embedded parts, in step S2, after the steel grating is assembled, the total station with a set deviation range value A0 is used to measure the hanging point position of the steel grating and the position of the embedded parts, and the measured hanging point coordinates are compared with the embedded part coordinates to calculate the deviation value A between each hanging point and the corresponding embedded part. nm , take the deviation value A nm Compare with the deviation range value A0, so as to determine the deviation value A between all lifting points and the embedded parts corresponding to the lifting points before the steel grating is lifted. nm Whether it is within the acceptable range can be used to determine whether the subsequent lifting operation can be carried out, so as to avoid the situation where it is found that the lifting point is not aligned with the embedded parts after lifting, and the steel grid needs to be lowered and the lifting point needs to be adjusted;

[0022] 2. The installation method of the steel grating and the embedded parts is precisely connected. The total station is used to measure the positions of the hanging points of the embedded parts and the steel grating, which can improve the measurement accuracy and work efficiency, while improving the construction safety and convenience of data management. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example

[0025] This embodiment provides an installation method for accurately docking a steel grille with an embedded part, comprising the following steps:

[0026] S1. Set up embedded parts and install lifting equipment;

[0027] S2. Assemble the steel grating on the ground and then lift it;

[0028] S3. The steel grille is fixed to the embedded parts in batches;

[0029] In step S2, after the steel grating is assembled, the position of the hanging point of the steel grating needs to correspond to the position of the embedded part one by one, so that after lifting, there will be no large deviation between the hanging point and the embedded part. Therefore, a total station with a set deviation range value A0 is used to measure the position of the hanging point of the steel grating and the position of the embedded part, and the measured hanging point coordinates are compared with the embedded part coordinates to calculate the deviation value A between each hanging point and the corresponding embedded part. nm , take the deviation value A nm Compare with the deviation range value A0 to judge the subsequent lifting operation; where n represents the lifting point / embedded part in the nth row, and m represents the lifting point / embedded part in the mth column.

[0030] Deviation value A nm The calculation formula is further disclosed:

[0031] Deviation value A nm The calculation formula is where x nm ,y nm 、z nm represents the spatial coordinates (x nm ,y nm , z nm ), X nm , Y nm , Z nm Represents the spatial coordinates of the embedded part in the nth row and mth column (X nm , Y nm , Z nm ).

[0032] Considering that in actual construction, the error range between the hanging point and the embedded parts cannot be too large, otherwise it will be difficult to carry out subsequent fixing operations. Therefore, the deviation range value A0 is: 5mm≤A0≤10mm. At the same time, when the deviation value A nm When ≤A0, lifting can be carried out; deviation value A nm ≥A0, adjust the hanging point position and recalculate the deviation value A nm , and compare again.

[0033] Step S1: setting embedded parts and installing lifting equipment is further disclosed. S1: setting embedded parts and installing lifting equipment includes the following steps:

[0034] S1.1. According to the design drawings, set embedded parts at the bottom of the roof beam;

[0035] S1.2. When the concrete strength at the bottom of the roof beam reaches 100%, remove the formwork and fix the hoist to the embedded parts around the bottom of the roof beam with bolts.

[0036] It should be noted that the hoist and the embedded parts are only fixed with bolts, and no welding process is involved, so as to avoid damage to the structure of the embedded parts when the hoist is disassembled later.

[0037] Further disclosure on the splicing of steel grilles:

[0038] The steel grating is welded and assembled in a cross shape by several steel secondary beams. In the horizontal direction of the steel grating, a steel secondary beam group consisting of two steel secondary beams is arranged at intervals with a steel secondary beam; in the vertical direction of the steel grating, a single steel secondary beam is arranged at intervals; in the horizontal direction of the steel grating, the spacing between the steel secondary beams in the steel secondary beam group is 0.3-0.4m, and the spacing between the steel secondary beam group and the vertical steel secondary beam is 3-4m; in the vertical direction of the steel grating, the spacing between the horizontal steel secondary beams is 2.5-3.5m;

[0039] The lifting point is set at the intersection of the steel secondary beam group and the transverse steel secondary beam. More specifically, a steel plate is set at the intersection of the steel secondary beam group and the transverse steel secondary beam, and the steel plate is fixed at the intersection by bolts. An ear hanger is fixed on one side of the steel plate by bolts, and the ear hanger is used as the lifting point.

[0040] The purpose of setting the lifting point at the intersection of the steel secondary beam group and the transverse steel secondary beam is to ensure that the steel grille is subjected to more uniform force when bearing load, which helps to reduce the occurrence of stress concentration and improve the stability and safety of the overall structure. In addition, by setting the lifting point at the intersection, the load can be effectively dispersed to multiple steel secondary beams, thereby avoiding excessive pressure on a single steel secondary beam and extending the service life of the structure. At the same time, the intersection as the location of the lifting point is convenient for precise positioning and installation during the construction process, which helps to reduce construction errors and improve installation accuracy. It can simplify the construction process, reduce construction difficulty, and is also conducive to the subsequent maintenance and inspection work. It should be noted that before lifting, the hook of the hoist is fixed to the steel grille lifting point corresponding to the embedded part fixed by the hoist.

[0041] Step S3: fixing the steel grille with the embedded parts in batches is further disclosed. S3: fixing the steel grille with the embedded parts in batches includes the following steps:

[0042] S3.1. After lifting the steel grating to the designed height by hoisting, except for the lifting points and embedded parts fixed by the hoist, the rest are fixed between the lifting points and the embedded parts corresponding to the corresponding lifting points by hanging rods;

[0043] S3.2. Remove the hoist and use an aerial lift to install the suspension rod on the lifting points of the removed hoist and the corresponding embedded parts in the same way as the installation of the suspension rod in step S3.1.

[0044] It should be noted that the bolt fixing ends of each hanger rod and the hanging points and embedded parts need to be reinforced again by welding. The purpose is to form a double guarantee through the combination of bolt fixing and welding reinforcement, so that the connection between the hanger rod and the hanging points and embedded parts is more firm and reliable. Welding can evenly distribute the stress in the connection area, and combined with the local tightening of the bolts, it effectively disperses the force and improves the overall bearing capacity. At the same time, the bolt connection may loosen when used for a long time or subjected to vibration, and welding reinforcement can effectively prevent this from happening and improve the stability of the structure.

[0045] The technical effect of the present invention is as follows: after the steel grating is assembled, the total station with a set deviation range value A0 is used to measure the hanging point position of the steel grating and the position of the embedded part, and the measured hanging point coordinates are compared with the embedded part coordinates to calculate the deviation value A0 between each hanging point and the corresponding embedded part. nm , take the deviation value A nm Compare with the deviation range value A0, so as to determine the deviation value A between all lifting points and the embedded parts corresponding to the lifting points before the steel grating is lifted. nm Whether it is within the acceptable range can be used to judge whether the subsequent lifting operation can be carried out, so as to avoid the situation where it is discovered after lifting that the lifting point and the embedded parts are not aligned, and the steel grille has to be lowered and the lifting point adjusted; at the same time, using a total station to measure the position of the lifting points of the embedded parts and the steel grille can improve measurement accuracy and work efficiency, while improving construction safety and the convenience of data management.

[0046] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A method for accurately docking a steel grille with an embedded part, comprising the following steps: S1. Set up embedded parts and install lifting equipment; S2. Assemble the steel grating on the ground and then lift it; S3. The steel grille is fixed to the embedded parts in batches; It is characterized in that: in the step S2, after the steel grating is assembled, the total station with a set deviation range value A0 is used to measure the hanging point position of the steel grating and the position of the embedded part, and the measured hanging point coordinates are compared with the embedded part coordinates to calculate the deviation value A between each hanging point and the corresponding embedded part. nm , take the deviation value A nm Compare with the deviation range value A0 to judge the subsequent lifting operation; where n represents the nth row and m represents the mth column.

2. The installation method for accurately docking the steel grille with the embedded parts according to claim 1 is characterized in that: The deviation value A nm The calculation formula is: where x nm ,y nm 、z nm represents the spatial coordinates (x nm ,y nm , z nm ), X nm , Y nm , Z nm Represents the spatial coordinates of the embedded part in the nth row and mth column (X nm , Y nm , Z nm ).

3. The installation method for precise docking of steel grilles and embedded parts according to claim 1 is characterized in that: The deviation range A0 is: 5mm≤A0≤10mm, where the deviation value A nm ≤A0, lifting is possible; deviation value A nm ≥A0, adjust the hanging point position and recalculate the deviation value A nm .

4. The installation method for accurately docking a steel grille with embedded parts according to claim 1 is characterized in that: The step S1, setting embedded parts and installing lifting equipment, includes the following steps: S1.

1. According to the design drawings, set embedded parts at the bottom of the roof beam; S1.

2. When the concrete strength at the bottom of the roof beam reaches 100%, remove the formwork and fix the hoist to the embedded parts around the bottom of the roof beam with bolts.

5. The installation method for accurately docking a steel grille with embedded parts according to claim 1 is characterized in that: In step S2, the steel grating is assembled by welding a plurality of steel secondary beams in a cross shape, wherein in the transverse direction of the steel grating, a steel secondary beam group consisting of two steel secondary beams is arranged at intervals with a steel secondary beam; in the vertical direction of the steel grating, a single steel secondary beam is arranged at intervals.

6. The installation method for accurately docking the steel grille with the embedded parts according to claim 5 is characterized in that: In the transverse direction of the steel grating, the spacing between the steel secondary beams in the steel secondary beam group is 0.3-0.4m, and the spacing between the steel secondary beam group and the vertical steel secondary beam is 3-4m; in the vertical direction of the steel grating, the spacing between the transverse steel secondary beams is 2.5-3.5m; the hanging point is set at the intersection of the steel secondary beam group and the transverse steel secondary beam.

7. The installation method for accurately docking a steel grille with embedded parts according to claim 4 is characterized in that: The hook of the hoist is fixed on the steel grille hanging point corresponding to the embedded part fixed to the hoist.

8. The installation method for accurately docking a steel grille with embedded parts according to claim 1 is characterized in that: The step S3, wherein the steel grille is fixed to the embedded parts in batches, comprises the following steps: S3.

1. After lifting the steel grating to the designed height by hoisting, except for the lifting points and embedded parts fixed by the hoist, the rest are fixed between the lifting points and the embedded parts corresponding to the corresponding lifting points by hanging rods; S3.

2. Remove the hoist and use an aerial lift to install the suspension rod on the lifting points of the removed hoist and the corresponding embedded parts in the same way as the installation of the suspension rod in step S3.1.

Images