CN115977398A - Construction method for positioning and installing square steel sleeve assembly - Google Patents

Abstract

The invention discloses a construction method for positioning and installing a square steel casing assembly, wherein the square steel casing assembly is grouted and fixed in the bearing platform, comprising the following steps: S1: combined forming of the square steel casing assembly; S2 : measure the installation position of the square steel sleeve assembly; S3: plant bars at the installation position of the square steel sleeve assembly; S4: place the square steel sleeve assembly on the implanted steel bar, Install the positioning steel plate on the pipe assembly; S5: Positioning and fixing of the positioning tool; S6: Use the positioning tool to fine-tune the position of the opposite steel casing assembly, check with a measuring instrument after the fine adjustment, and fix the square steel sleeve after confirming that the position is correct Pipe assembly; S7: Binding steel bars and pouring concrete. This method uses movable positioning tooling to position and install multiple pre-embedded casing combinations at one time, which can reduce the number of measurements and save construction costs; it has the advantages of accurate positioning, fast positioning speed, and high construction efficiency.

Description

A construction method for positioning and installing square steel casing assembly

technical field

The invention relates to the technical field of building construction, in particular to a construction method for positioning and installing a square steel casing assembly.

Background technique

The large aircraft ground dynamics test platform is the first test platform in related fields in China. The dynamic characteristics of the large side slip angle under the real runway, collecting basic data, breaking the monopoly of foreign countries on the basic data of key technologies, and filling a gap in China.

The slide rail test line of the experimental platform needs to use a large number of square steel casings. The accuracy control of the square steel casings is the first process in the core index control of the entire slide rail test line. During construction, in order to ensure the quality of subsequent projects, the installation accuracy The requirements are very high. The traditional positioning installation construction method has many measurements, high labor costs, low efficiency and affects the construction progress, and cannot guarantee the positioning accuracy.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a construction method for the positioning and installation of square steel casing assemblies with precise positioning and high construction efficiency.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A construction method for positioning and installing a square steel casing assembly, wherein the square steel casing assembly is grouted and fixed in the cap, comprising the following steps:

S1: Combined forming of square steel casing assembly.

S2: Measure the installation position of the lofted square steel casing assembly.

S3: Plant reinforcement at the installation position of the square steel casing assembly.

S4: Place the square steel casing assembly on the implanted steel bar, and install the positioning steel plate on the square steel casing assembly.

S5: Positioning and fixing of positioning tooling.

S6: Use the positioning tool to fine-tune the position of the square steel casing assembly. After the fine adjustment, use the measuring instrument to check, and then fix the square steel casing assembly after confirming that the position is correct.

S7: Binding steel bars and pouring concrete.

As a further improvement of the above technical solution:

In step S1, the square steel sleeve assembly includes 4 square steel sleeves, the square steel sleeves are distributed in a rectangular shape, and are fixed by welding with stirrups, and a fixed steel plate is welded at the bottom of the square steel sleeves.

In step S3, according to the stakeout position, the reinforcement is planted at the center of each square steel casing.

In step S4, the positioning steel plate is a cross steel plate, and the cross steel plate is arranged between the steel sleeves of each side and erected on the stirrup.

A pin hole is opened on the positioning steel plate.

In step S5, the positioning tool includes a cantilever frame, an adjuster, and a positioning plate. Universal wheels and supporting screws are installed on the bottom of the cantilever frame. pin hole.

It is characterized in that: in step S6, whether the positioning is accurate is checked by checking whether the round steel pin can pass through the positioning steel plate and the pin hole on the positioning plate smoothly.

Compared with the prior art, the present invention has the advantages of:

The construction method of the positioning and installation of the square steel casing assembly of the present invention, the method coordinates the opposite steel casing assembly by the positioning tool and the positioning steel plate to locate, ensuring the positioning accuracy of the installation of the square steel casing assembly; and after positioning, use The measuring instrument checks and then fixes the square steel casing assembly, which further improves the positioning accuracy; the positioning plate of the positioning tool is provided with multiple pin holes, which can position and install multiple square steel casing assemblies at one time, reducing the measurement The number of times saves construction costs; this method uses movable positioning tooling to facilitate transitions, fast positioning speed, and high construction efficiency. It is especially suitable for occasions with a large number of square steel casing assemblies and long lines.

Description of drawings

Fig. 1 is a schematic diagram of the installation of the square steel casing assembly and the positioning steel plate in the present invention.

Fig. 2 is a structural schematic diagram of the positioning tool in the present invention.

Fig. 3 is a top view of the positioning tool in the present invention.

Each label in the figure means:

1. Square steel casing assembly; 11. Square steel casing; 12. Stirrup; 13. Fixed steel plate; 2. Positioning steel plate; 3. Positioning tooling; 31. Cantilever frame; 32. Regulator; 33. Positioning plate .

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 3, the construction method for positioning and installing the square steel casing assembly in this embodiment includes the following steps:

S1: Combined forming of square steel casing assembly 1.

S2: Measure the installation position of the lofted square steel casing assembly 1 .

S3: Plant reinforcement at the installation position of the square steel casing assembly 1.

S4: Place the square steel casing assembly 1 on the implanted steel bar, and install the positioning steel plate 2 on the square steel casing assembly 1 .

S5: positioning and fixing of the positioning tool 3 .

S6: Use the positioning tool 3 to fine-tune the position of the square steel bushing assembly 1. After the fine adjustment, check with a measuring instrument, and fix the square steel bushing assembly 1 after checking and confirming that the position is correct.

S7: Binding steel bars and pouring concrete.

In this method, the positioning tool 3 and the positioning steel plate 2 cooperate with the opposite steel casing assembly 1 to perform positioning, which ensures the positioning accuracy of the installation of the square steel casing assembly 1, and after positioning, the measuring instrument is used to check and then fix the square steel casing assembly Item 1 further improves the positioning accuracy, reduces the number of measurements, and improves the construction efficiency.

In this embodiment, in step S1, the square steel sleeve assembly 1 includes four square steel sleeves 11, the square steel sleeves 11 are distributed in a rectangular shape, and are fixed by welding with stirrups 12, and the bottom of the square steel sleeves 11 is welded Fixed steel plate 13 is arranged. In this embodiment, the material of the square steel casing 11 is Q235 steel, which is cut and blanked in the factory. Its size is 120×120mm, the wall thickness is 5mm, and the height is 1200mm. The stirrup 12 is welded and fixed, and the stirrup 12 is a steel bar with a diameter of 16mm. The bottom of the square steel sleeve 11 is welded with a fixed steel plate 13, and the thickness of the weld is 6mm. .

In this embodiment, in step S2, the control points are set out according to the CPIII coordinate points, and the edge line of the square steel sleeve assembly 1 is manually determined according to the control points, and then the ink line is played or hung up.

In this embodiment, in step S3, bars are planted at the centers of the steel sleeves 11 on all sides according to the stakeout position. In this embodiment, according to the artificially ejected ink line, the position of the square steel sleeve assembly 1 is determined longitudinally according to the interval of 0.75m, and the position of the support rib is determined according to the segment position, and four supports are arranged at the bottom of the fixed steel plate 13 Ribs are located at the center of the steel casing 11 on all sides. Use an electric drill to drill holes with a drill diameter of 16mm and a drilling depth of 40mm. Install support ribs in the holes and tighten them with a hammer. The supporting ribs of the elevation are cut with a hand-held grinding wheel to ensure that the top of the supporting ribs is level.

In this embodiment, in step S4, the square steel casing assembly 1 is installed manually with small instruments, and the fixed steel plate 13 of the installed square steel casing assembly 1 is not welded to the support ribs, and only needs to be positioned and placed initially.

In this embodiment, in step S4 , the positioning steel plate 2 is a cross steel plate, and the cross steel plate is arranged between the steel sleeves 11 of each side and set on the stirrup 12 . In this embodiment, two layers of cross steel plates are arranged up and down, and the cross steel plates can be erected on the stirrup 12 without welding and fixing, and the operation is simple and convenient.

In this embodiment, a pin hole is opened on the cross steel plate. The pin hole is used to check whether the positioning is accurate.

In the present embodiment, in step S5, the positioning tool 3 includes a cantilever frame 31, an adjuster 32, and a positioning plate 33. Universal wheels and supporting screws are installed on the bottom of the cantilever frame 31. hole corresponding to the pin hole. The positioning tool 3 is equipped with universal wheels to move easily, and a supporting screw is provided to make the positioning tool 3 fixed conveniently and firmly. Wherein, the positioning plate 33 is 6m long, 4mm thick, and 500mm wide. It is divided into eight sections, and each section is 750mm long. The vertical spacing of the steel casing assembly 1 is consistent, and 8 groups of square steel casing assemblies 1 can be positioned at one time. Three pin holes with a diameter of 30mm' are opened on each section of the positioning plate 33, and the opening positions are at each side along the longitudinal direction of the cap. Center location of steel casing assembly 1.

In this embodiment, in step S5, the position is preliminarily determined manually in combination with the sideline of the stakeout and the size of the positioning tool 3, and then the pin holes on the positioning plate 33 are roughly aligned with the pin holes on the cross steel plate, and the total station is used for coordinate stakeout. , the prism is put into the pin hole on the positioning plate 33, release the center position of the head and tail side steel sleeve assembly 1 on the positioning plate 33, and use the support screw to fix, prevent the positioning tooling 3 from moving.

In this embodiment, in step S6, CPIII is used for precise positioning, and the position of the positioning plate 33 is adjusted using the regulator 32 so that its center point is consistent with the center position of the square steel casing assembly 1. The flatness control of the positioning plate 33 is first Measure the elevation, unify the height, and then use the level to check and adjust.

In this embodiment, in step S6 , it is checked whether the positioning is accurate by checking whether the round steel pin can pass through the pin hole on the cross steel plate and the positioning plate 33 smoothly. Its operation is simple. After the round steel bolt is inserted, use the CPIII instrument to check the coordinates, and fix the support rib and the fixed steel plate 13 by spot welding to prevent the disturbance of the square steel casing assembly 1 from affecting the positioning accuracy. After the preliminary spot welding and fixing, review the square steel casing assembly 1 For the accuracy of the square steel casing 11, check the two diagonal points of the square steel casing 11, control the error ±5mm, and check the verticality of the square steel casing 11 with an electronic level.

In this embodiment, in step S6, after the square steel sleeve assembly 1 is precisely positioned, the support rib is welded to the fixed steel plate 13, and the full-length steel bar is welded to the left and right sides of the 2/3 square steel sleeve 11 height. As a whole, because the length is too long, the accuracy will be affected during pouring. Every 5 sets of square steel sleeve assemblies 1 are fixed with steel diagonal braces at an angle of 45° downward. The steel bars are welded to four obliquely downward sides at the four corners of the square steel casing 11, the cable-stayed steel bars are welded with the main reinforcement of the cap, and the inner side concrete surface is welded with reinforcement. The connection is firm and reliable, avoiding affecting the positioning accuracy during pouring.

In this embodiment, in step S7, the concrete is poured layer by layer and vibrated layer by layer. During pouring, the vibrator does not collide with the square steel casing assembly 1 and the fixed steel bars.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent implementation of equivalent changes example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims (7)

1. A construction method for positioning and installing a square steel sleeve assembly is characterized by comprising the following steps: the square steel sleeve assembly (1) is grouted and fixed in a bearing platform and comprises the following steps:

s1: the square steel sleeve assembly (1) is formed in a combined mode;

s2: measuring the mounting position of the lofting square steel sleeve assembly (1);

s3: planting bars at the mounting position of the square steel sleeve assembly (1);

s4: placing the square steel sleeve assembly (1) on the implanted steel bar, and installing a positioning steel plate (2) on the square steel sleeve assembly (1);

s5: positioning and fixing the positioning tool (3);

s6: the position of the square steel sleeve assembly (1) is finely adjusted by using a positioning tool (3), a measuring instrument is used for rechecking after fine adjustment, and the square steel sleeve assembly (1) is fixed after the position is checked and confirmed to be correct;

s7: binding reinforcing steel bars and pouring concrete.

2. The construction method for positioning and installing the square steel sleeve assembly according to claim 1, wherein: in step S1, the square steel sleeve assembly (1) comprises 4 square steel sleeves (11), the square steel sleeves (11) are distributed in a rectangular shape and are fixed by welding stirrups (12), and fixed steel plates (13) are welded at the bottoms of the square steel sleeves (11).

3. The construction method for positioning and installing the square steel sleeve assembly according to claim 2, wherein: in step S3, steel bars are planted at the center of each square steel sleeve (11) according to the lofting position.

4. The construction method for positioning and installing the square steel sleeve assembly according to claim 1, wherein: in the step S4, the positioning steel plate (2) is a cross steel plate, and the cross steel plate is arranged between the steel sleeves (11) and erected on the stirrups (12).

5. The construction method for positioning and installing the square steel tube assembly according to claim 4, wherein: bolt holes are formed in the positioning steel plates (2).

6. The construction method for positioning and installing the square steel sleeve assembly according to claim 1, wherein: in the step S5, the positioning tool (3) comprises a cantilever frame (31), an adjuster (32) and a positioning plate (33), universal wheels and supporting screws are mounted at the bottom of the cantilever frame (31), and bolt holes corresponding to the bolt holes in the positioning steel plate (2) are formed in the positioning plate (33).

7. The construction method for positioning and installing the square steel sleeve assembly according to claim 1, wherein: in the step S6, whether the positioning is accurate or not is checked through whether round steel bolts can smoothly pass through bolt holes in the positioning steel plate (2) and the positioning plate (33).

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