Assembly type concrete column alignment tool

Abstract

The utility model provides an assembly type concrete column alignment tool, which belongs to the technical field of concrete column construction and comprises channel steel, through holes are formed in two ends of the channel steel, nuts are arranged at positions, corresponding to the through holes, of the outer surface of the channel steel, and ejector rods are in internal threaded connection with the nuts. And the channel steel is arranged between the core column and the reserved steel bar of the bottom column. According to the alignment tool provided by the utility model, no extra operation space is needed during alignment, and the alignment requirements of most assembly type concrete columns can be met.

Description

Technical Field

[0001] This utility model belongs to the field of concrete column construction technology, and in particular relates to a prefabricated concrete column alignment tool. Background Technology

[0002] Currently, there are two main methods for constructing large concrete columns. One is the traditional cast-in-place concrete method, where concrete is poured after the column reinforcement and formwork are completed vertically. The other method involves fixing the formwork and pouring concrete in sections. The first method involves more work at height, resulting in poor construction safety and inconvenient vibration, which can easily lead to quality problems such as honeycomb and pitted surfaces. The second method has more construction joints, resulting in poor appearance quality and affecting service life.

[0003] Based on the current construction situation of large concrete columns, a technology for prefabricating the entire column and then hoisting it was developed. After the large concrete column is hoisted, due to its heavy weight and height, it is difficult to move its bottom during the installation and alignment process. Currently, hydraulic jacks are usually used for lateral support during installation and alignment, but this method requires a large operating space to place the hydraulic jacks, which cannot meet the requirements for concrete columns with limited operating space. Utility Model Content

[0004] In view of the defects or deficiencies in the existing technology, this utility model provides a prefabricated concrete column alignment tool that does not require additional operating space during alignment and can meet the alignment requirements of most prefabricated concrete columns.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An embodiment of this utility model provides a prefabricated concrete column alignment fixture, including a channel steel with through holes at both ends. Nuts are provided on the outer surface of the channel steel at positions corresponding to the through holes, and a top rod is internally threaded onto the nut. The channel steel is positioned between the core column and the reserved reinforcing bars of the bottom column.

[0007] Furthermore, the channel steel is made of [20a type steel, and the length of the channel steel is determined according to the external dimensions of the prefabricated concrete column.

[0008] Furthermore, the two through holes are arranged side by side, and the spacing between the through holes is determined according to the size of the core post.

[0009] Furthermore, the axis of the nut coincides with the axis of the through hole.

[0010] Furthermore, reinforcing ribs are provided on both sides of the through hole, and the reinforcing ribs are located in the groove of the channel steel.

[0011] Furthermore, the reinforcing rib is welded and fixed to the inner wall of the channel steel groove.

[0012] Furthermore, the diameter of the through hole is larger than the diameter of the push rod.

[0013] Furthermore, the push rod includes a single-ended bolt, which is adapted to a nut.

[0014] Furthermore, a nut is bolted to the end of the single-headed bolt away from the bolt head, and a steel plate is welded to one side of the nut.

[0015] Furthermore, the steel plate is in contact with the outer surface of the core column, and the channel steel is in contact with the reserved reinforcing bars of the bottom column.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention involves opening through holes in the channel steel, placing nuts at the through holes, and connecting the nuts to the top rods via threads. The channel steel is then placed on the pre-reserved reinforcing bars of the core column and bottom column. The channel steel and the top rod are used for centering and alignment, eliminating the need for additional operating space and meeting the centering and alignment requirements of most prefabricated concrete columns. Attached Figure Description

[0018] Figure 1 This is a side view of the alignment tooling structure in an embodiment of this utility model;

[0019] Figure 2 This is a front view of the alignment tooling structure in an embodiment of this utility model;

[0020] Figure 3 This is a diagram showing the positional relationship between the alignment tooling and the prefabricated concrete column in this embodiment of the invention.

[0021] Among them, 1. Channel steel; 2. Through hole; 3. Core column; 4. Nut; 5. Reinforcing rib plate; 6. Single-headed bolt; 7. Bolt head; 8. Steel plate; 9. Reserved reinforcing bar for bottom column. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] A typical embodiment of this utility model is as follows: Figure 1 and Figure 2 As shown, a prefabricated concrete column alignment fixture includes a channel steel 1, which is made of [20a type steel. The length of the channel steel 1 is determined according to the external dimensions of the concrete column. Multiple through holes are opened on the outer surface of the channel steel 1. Specifically, two through holes are opened on the outer surface of the channel steel 1, located at both ends of the channel steel 1. The two through holes 2 are arranged side by side, and the spacing between the through holes 2 is determined according to the dimensions of the core column 3.

[0024] Nuts 4 are provided on the outer surface of channel steel 1 at the corresponding positions of through holes 2. The axis of nut 4 coincides with the axis of through holes 2. Reinforcing ribs 5 are provided on both sides of through holes 2. The reinforcing ribs 5 are placed in the groove of channel steel 1 and are welded and fixed to the inner wall of the groove of channel steel 1 to ensure the stability of channel steel 1 structure.

[0025] A push rod is installed in the through hole 2. The diameter of the through hole 2 is 2mm larger than the diameter of the push rod. The push rod includes a single-ended bolt 6, which is adapted to a nut 4, so that the single-ended bolt 6 is inserted into the through hole 2 and is threadedly connected to the channel steel 1 through the nut 4. A nut is bolted to the end of the single-ended bolt 6 away from the bolt head 7. A steel plate 8 is welded and fixed to one side of the nut. The steel plate 8 is 5mm thick and can serve as a load-bearing surface to support the surface of the core column 3.

[0026] When using, such as Figure 3 As shown, the prefabricated column is first hoisted to the connection point using a crane. After the prefabricated column is basically in place, 80% of the crane load is retained so that all parts of the bottom of the prefabricated column are in contact with the shims.

[0027] The alignment fixture is installed sequentially between the core column 3 and the reserved steel bar 9 of the bottom column on the four sides of the prefabricated column. The top rod on the fixture is adjusted so that the fixture support channel steel 1 is supported on the inside of the reserved steel bar 9 of the bottom column, and the force point of the top rod is in the middle position of the core column 3.

[0028] When the tooling is installed, try to ensure the rigidity and stability of the support surface of the channel steel 1, that is, try to support the root of the outer steel bar, that is, the top rod is supported on the lower half of the core column 3.

[0029] Based on the deviation between the axis of the assembly column and the axis of the lower column, adjust the top rods of the tooling on both sides to rotate in or out, and make fine adjustments to the column to achieve alignment and centering.

[0030] Adjust the rotation of the corresponding push rod to be done simultaneously in both the inward and outward movements to avoid excessive deviation during the rotation of the column.

[0031] Specifically, adjust the push rod at one end of the tooling to screw in, and at the same time adjust the push rod at the opposite end of the tooling to screw out, thereby aligning the axis of the prefabricated column A. Then, adjust the push rod at the other end of the tooling to screw in, and at the same time adjust the push rod at the other end of the tooling to screw out, thereby aligning the axis of the prefabricated column B.

[0032] Using the same method, adjust the axis of other surfaces of the prefabricated column accordingly to align the axes of the remaining surfaces.

[0033] After adjusting the alignment of one side of the shaft, tighten the push rod as much as possible to make it as close as possible to the core post 3.

[0034] After the axis alignment of the four sides of the prefabricated column is completed, the crane hook is unloaded and the prefabricated column is fully supported on the bottom pad. After the verticality and alignment are finally inspected and accepted, the upper and lower node steel reinforcement is connected and the crane hook is removed.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A prefabricated concrete column alignment fixture, characterized in that, The material includes a channel steel, with through holes at both ends. Nuts are provided on the outer surface of the channel steel at positions corresponding to the through holes. A top rod is connected to the internal thread of the nut. The channel steel is positioned between the core column and the reserved reinforcing bars of the bottom column.

2. The prefabricated concrete column alignment fixture as described in claim 1, characterized in that, The channel steel is made of [20a type steel, and the length of the channel steel is determined according to the external dimensions of the prefabricated concrete column.

3. The prefabricated concrete column alignment fixture as described in claim 1, characterized in that, Two through holes are set side by side, and the spacing between the through holes is determined according to the size of the core post.

4. The prefabricated concrete column alignment fixture as described in claim 1, characterized in that, The axis of the nut coincides with the axis of the through hole.

5. The prefabricated concrete column alignment fixture as described in claim 1, characterized in that, Reinforcing ribs are provided on both sides of the through hole, and the reinforcing ribs are located in the groove of the channel steel.

6. The prefabricated concrete column alignment fixture as described in claim 5, characterized in that, The reinforcing ribs are welded and fixed to the inner wall of the channel steel groove.

7. The prefabricated concrete column alignment fixture as described in claim 1, characterized in that, The diameter of the through hole is larger than the diameter of the push rod.

8. The prefabricated concrete column alignment fixture as described in claim 1, characterized in that, The top rod includes a single-ended bolt, which is adapted to a nut.

9. The prefabricated concrete column alignment fixture as described in claim 8, characterized in that, The single-headed bolt has a nut bolted to the end furthest from the bolt head, and a steel plate is welded to one side of the nut.

10. The prefabricated concrete column alignment fixture as described in claim 9, characterized in that, The steel plate is in contact with the outer surface of the core column, and the channel steel is in contact with the reserved reinforcing bars of the bottom column.

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