A steel tube concrete column foundation section and its installation construction method

Abstract

A steel tube concrete column foundation section and its installation construction method include a positioning bracket, which is fixed on the foundation cushion layer and is characterized in that the positioning bracket includes positioning screws, four columns and a base plate; the columns are evenly spaced on the periphery of the base plate, and the columns are welded to the base plate; the base plate is provided with two parts, forming a stabilization layer and a load-bearing layer on the columns; the positioning screws are provided with a plurality of equal-spaced ones passing through the stabilization layer and the load-bearing layer, and are welded to the stabilization layer and the load-bearing layer; a steel bar frame is welded between the four columns; this invention patent eliminates the cumbersome process of positioning frame production, and by setting the foundation positioning section and fixing the columns and the base plate bottom reinforcement, the steel tube concrete column is positioned in advance during the base plate reinforcement binding stage, and the positioning of the foundation section can be completed by simply determining the position in advance at the base plate bottom. The overall verticality of the steel tube concrete column is ensured, the operation is convenient, and it is worthy of promotion and application.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, in particular to a steel tube concrete column foundation section and an installation construction method thereof. Background Art

[0002] With the continuous development of the construction industry, steel components are widely used in the construction of various types of houses due to their advantages of factory processing, high precision, fast on-site assembly, short construction periods, and excellent performance. During the construction of steel structures, the foundation is embedded with steel column foundation sections, which are fixed in the foundation cap, forming a unified vertical structure with the foundation and ensuring the stability of the main structure.

[0003] In order to ensure the safety and reliability of the building, the steel columns must be installed firmly and vertically. Therefore, the installation of the steel column base section must be carried out with higher standards to ensure that the requirements of firmness and verticality are met.

[0004] The current way to deal with this problem is to make a positioning frame, install the bolts on the positioning frame in advance, then weld and install it on the base reinforcement cage, install the foundation section on the bolts and tighten it after pouring concrete, and grout the bottom of the steel column.

[0005] In this process, there are no auxiliary machines or tools available, and the installation efficiency of the operators is low.

[0006] The installation accuracy is difficult to control, and this method increases labor costs and reduces the efficiency of the enterprise. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a steel tube concrete column foundation section and an installation construction method thereof, which can effectively solve the problems raised in the above background technology.

[0008] In order to solve the above problems, the technical solution adopted by the present invention is: a steel tube concrete column foundation section, including a positioning bracket, the positioning bracket is fixed on the foundation cushion layer, and is characterized in that the positioning bracket includes a positioning screw, four columns and a base plate; the columns are evenly distributed on the periphery of the base plate, and the columns are welded to the base plate; the base plate is provided with two parts, forming a stabilizing layer and a load-bearing layer on the columns; the positioning screw is provided with a number of equally spaced ones passing through the stabilizing layer and the load-bearing layer, and is welded to the stabilizing layer and the load-bearing layer; a steel frame is provided between the four columns for welding.

[0009] As a further preferred embodiment of the present invention, sliding grooves are provided on both sides of the column; the base plate of the base is in the shape of a circular ring, and a number of positioning screws are distributed on the base plate at equal intervals around the circumference.

[0010] As a further preferred embodiment of the present invention, the positioning bracket further includes a horizontal sensing mechanism; both ends of the horizontal sensing mechanism are slidably connected to the sliding grooves on one side of the two columns.

[0011] As a further preferred embodiment of the present invention, the horizontal sensing mechanism includes a mounting seat, a push-pull rod and an adjusting rod; protrusions are provided at both ends of the mounting seat, and the mounting seat is slidably connected to the sliding groove of the column through the protrusions; a through hole is provided on the side of the mounting seat, and the push-pull rod passes through the through hole, one end of the push-pull rod is a handle end, and the other end is a boss end; the boss end is provided with a threaded hole; the adjusting rod is threadedly connected to the threaded hole.

[0012] As a further preferred solution of the present invention, a platform is provided on the top of the adjusting rod, and a strain gauge is embedded on the platform.

[0013] As a further preferred embodiment of the present invention, four horizontal sensing mechanisms are provided and are installed at equal intervals on the side walls of the positioning bracket.

[0014] As a further preferred embodiment of the present invention, the following installation and construction methods are also included:

[0015] S1. First, embed the positioning bracket on the foundation cushion;

[0016] S2. Install four sets of horizontal sensing mechanisms on the side walls of the positioning bracket;

[0017] S3. After installation is completed, push the push-pull rod on the horizontal sensing mechanism to move the boss end to the bottom of the load-bearing layer, then twist the adjustment rod to raise the platform on the adjustment rod and make the strain gauge stick to the bottom surface of the load-bearing layer;

[0018] S4, recording the current sensing values ​​of the strain gauges on the four sets of horizontal sensing mechanisms;

[0019] S5, the value of the calibrated strain gauge;

[0020] S6. Installing the CFST column: Setting mounting holes at the column foot corresponding to the number of positioning screws on the positioning bracket. The CFST column passes through the positioning screws and is placed on the load-bearing layer.

[0021] S7, four sets of strain gauges sense and record the deformation values ​​of the load-bearing layer in four directions respectively;

[0022] S8. By comparing the differences in various directions, a reasonable deviation range is preset. When the value in a certain direction is relatively large, the bottom of the column foot at the corresponding position of the steel tube concrete column is polished in time;

[0023] S9. Repeated testing and polishing until the deviation is within a reasonable range;

[0024] S10. After the level calibration is completed, the level sensing mechanism can be removed from the positioning bracket and reused;

[0025] S11. The positioning bracket is fixed to the column foot of the steel tube concrete column by positioning screws and bolts. A quick-close net is set between the positioning bracket and the column foot to ensure the quality of the joint and eliminate the need for formwork support.

[0026] S12. The load-bearing layer is welded to the steel lap plate at the base of the concrete-filled steel tube column, so that the positioning bracket and the concrete-filled steel tube column are connected into a whole. The positioning screw is extended into the concrete-filled steel tube column to ensure that the overall connection is reliable. A stiffening plate is set at the base of the concrete-filled steel tube column to support the steel lap plate and the bottom plate of the steel tube column. The screws and nuts are fixed between the stiffening plates. After the welding of the bottom plate steel bars and the lap plate is completed, the concrete-filled steel tube column foundation is fixed.

[0027] Compared with the prior art, the present invention provides a steel tube concrete column foundation section and its installation and construction method, which has the following beneficial effects:

[0028] This patented invention eliminates the tedious process of manufacturing a positioning frame. By setting a foundation positioning section to fix the column to the bottom reinforcement of the pedestal, the steel tube concrete column is positioned in advance during the pedestal reinforcement binding stage. The positioning of the foundation section can be completed by simply determining the position at the bottom of the pedestal in advance. As a component of the steel tube concrete column, the positioning section is connected to the upper column foot. During connection, only the verticality of the screw needs to be calibrated to ensure the overall verticality of the steel tube concrete column. It is easy to operate and worthy of promotion and application. The horizontal sensing mechanism can further detect the horizontality of the support surface, thereby further improving the overall verticality. The horizontal sensing mechanism is plug-and-play and can be disassembled and recycled after use, reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the horizontal sensing mechanism;

[0031] Figure 3 This is a schematic diagram of the installation structure of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the present invention;

[0033] Figure 5 A top view of the structure of the present invention;

[0034] Figure 6 A top view of the structure of the present invention;

[0035] Figure 7 This is a schematic diagram of the construction site of the present invention;

[0036] Among them: 1. Positioning bracket; 1-1. Positioning screw; 1-2. Column; 1-21. Sliding groove; 1-3. Base plate; 1-31. Stabilizing layer; 1-32. Load-bearing layer; 1-4. Steel frame; 2. Horizontal sensing mechanism; 2-1. Mounting seat; 2-2. Push-pull rod; 2-21. Handle end; 2-22. Boss end; 2-3. Adjustment rod; 2-31. Platform; 3. Bump; 4. Strain gauge; 5. Steel tube concrete column. DETAILED DESCRIPTION

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] Reference Figure 1-7 The present invention provides a steel tube concrete column foundation section, including a positioning bracket 1, which is fixed on a foundation cushion layer and is characterized in that the positioning bracket 1 includes a positioning screw 1-1, four columns 1-2 and a pedestal base plate 1-3; the columns 1-2 are evenly distributed on the periphery of the pedestal base plate 1-3, and the columns 1-2 are welded to the pedestal base plate 1-3; the pedestal base plate 1-3 is provided with two pieces, forming a stabilizing layer 1-31 and a load-bearing layer 1-32 on the columns 1-2; the positioning screw 1-1 is provided with a plurality of equally spaced ones passing through the stabilizing layer 1-31 and the load-bearing layer 1-32, and is welded to the stabilizing layer 1-31 and the load-bearing layer 1-32; a steel bar frame 1-4 is welded between the four columns 1-2.

[0040] As a further preferred embodiment of the present invention, sliding grooves 1-21 are provided on both sides of the column 1-2; the base plate 1-3 is in a circular shape, and several positioning screws 1-1 are distributed on the base plate 1-3 at equal intervals around the circumference.

[0041] As a further preferred embodiment of the present invention, the positioning bracket 1 further includes a horizontal sensing mechanism 2; both ends of the horizontal sensing mechanism 2 are slidably connected to the sliding grooves 1-21 on one side of the two columns 1-2.

[0042] As a further preferred embodiment of the present invention, the horizontal sensing mechanism 2 includes a mounting seat 2-1, a push-pull rod 2-2 and an adjusting rod 2-3; protrusions 3 are provided at both ends of the mounting seat 2-1, and the mounting seat 2-1 is slidably connected to the sliding groove 1-21 of the column 1-2 through the protrusions 3; a through hole is provided on the side of the mounting seat 2-1, and the push-pull rod 2-2 passes through the through hole, one end of the push-pull rod 2-2 is a handle end 2-21, and the other end is a boss end 2-22; the boss end 2-22 is provided with a threaded hole; the adjusting rod 2-3 is threadedly connected to the threaded hole.

[0043] As a further preferred embodiment of the present invention, a platform 2-31 is provided on the top of the adjusting rod 2-3, and a strain gauge 4 is embedded on the platform 2-31.

[0044] As a further preferred embodiment of the present invention, four horizontal sensing mechanisms 2 are provided and are installed on the side walls of the positioning bracket 1 at equal intervals.

[0045] As a further preferred embodiment of the present invention, the following installation and construction methods are also included:

[0046] S1. First, embed the positioning bracket 1 on the foundation cushion;

[0047] S2. Install four sets of horizontal sensing mechanisms 2 on the side walls of the positioning bracket 1;

[0048] S3. After installation is completed, push the push-pull rod 2-2 on the horizontal sensing mechanism 2 to move the boss end 2-22 to the bottom of the load-bearing layer 1-32, then twist the adjustment rod 2-3 to raise the platform 2-31 on the adjustment rod 2-3 and make the strain gauge 4 stick to the bottom surface of the load-bearing layer 1-32;

[0049] S4, recording the current sensing values ​​of the strain gauges 4 on the four sets of horizontal sensing mechanisms 2;

[0050] S5, calibrate the value of strain gauge 4;

[0051] S6. Install the concrete-filled steel tube column 5: Set mounting holes at the base of the concrete-filled steel tube column 5 corresponding to the number of positioning screws 1-1 on the positioning bracket 1. The concrete-filled steel tube column 5 passes through the positioning screws 1-1 and is placed on the load-bearing layer 1-32. Since the load-bearing layer 1-32 is a steel plate support layer, it is unevenly stressed and will produce slight deformations. The force is thereby transmitted to the strain gauge 4 on the bottom surface of the load-bearing layer 1-32.

[0052] S7, four sets of strain gauges 4 respectively sense and record the deformation values ​​of the load-bearing layers 1-32 in four directions;

[0053] S8. By comparing the differences in various directions, a reasonable deviation range is preset. When the value of a certain direction is relatively large, the bottom of the column foot at the corresponding position of the steel tube concrete column 5 is polished in time;

[0054] Assume that the four sets of strain gauges 4 in four directions are strain gauge A, strain gauge B, strain gauge C and strain gauge D,

[0055] Initial resistance value: R_A, R_B, R_C, R_D

[0056] Strain gain coefficient: GF_A, GF_B, GF_C, GF_D

[0057] Resistance change caused by deformation: ΔR_A, ΔR_B, ΔR_C, ΔR_D

[0058] We first calculate the corresponding strain value based on the data of each strain gauge:

[0059] εA=ΔR_A / (R_A*GF_A)

[0060] εB=ΔR_B / (R_B*GF_B)

[0061] εC=ΔR_C / (R_C*GF_C)

[0062] εD=ΔR_D / (R_D*GF_D)

[0063] Next, we can use these strain values ​​to estimate the approximate location of the object. Assuming that the angle of the annular plane is evenly divided into 360 degrees, we can calculate the change in strain value corresponding to each degree as Δε.

[0064] Assume that we have obtained the following data through experiments or simulations: The change in strain value for each 1 degree angle change is: Δε=0.001

[0065] Now, we can estimate the position of the object by following these steps:

[0066] 1. Calculate the angle change corresponding to each strain gauge:

[0067] θA =εA / Δε

[0068] θB =εB / Δε

[0069] θC=εC / Δε

[0070] θD =εD / Δε

[0071] 2. Based on the calculated angle, calculate the approximate location of the object.

[0072] For example, if θA = 20, then the deformation sensed by strain gauge A is equivalent to a 20-degree angular change on the annular plane (the predicted range). Similarly, based on the angular changes of strain gauges B, C, and D, we can infer the approximate position of the object and then polish any uneven areas.

[0073] S9. Repeated testing and polishing until the deviation is within a reasonable range;

[0074] S10. After the horizontal calibration is completed, the horizontal sensing mechanism 2 can be removed from the positioning bracket 1 and reused;

[0075] S11. The positioning bracket 1 is fixed to the column foot of the steel tube concrete column 5 by the positioning screw 1-1 and the bolt. A quick-closing net is set between the positioning bracket 1 and the column foot to ensure the quality of the joint and eliminate the need for formwork support.

[0076] S12. The load-bearing layer 1-32 is welded to the steel lap plate at the foot of the steel tube concrete column 5, so that the positioning bracket 1 and the steel tube concrete column 5 are connected into a whole, and the positioning screw 1-1 extends into the steel tube concrete column 5 to ensure that the overall connection is reliable; a stiffening plate is set at the foot of the steel tube concrete column 5 to support the steel lap plate and the steel tube column bottom plate, and the fixing screws and nuts are between the stiffening plates. After the welding of the bottom plate steel bars and the lap plate is completed, the foundation of the steel tube concrete column 5 is fixed.

[0077] As needed, the above-mentioned installation, setting, provision or connection methods include but are not limited to screws, rivets, welding or socketing, fixing and the like. The installation, setting or connection method is selected according to the work scenario.

[0078] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A steel tube concrete column foundation section, comprising a positioning bracket (1), the positioning bracket (1) being fixed on a foundation cushion layer, characterized in that: The positioning bracket (1) comprises a positioning screw (1-1), four columns (1-2) and a base plate (1-3); the columns (1-2) are evenly spaced and distributed on the periphery of the base plate (1-3), and the columns (1-2) and the base plate (1-3) are welded; the base plate (1-3) is provided with two pieces, which form a stabilizing layer (1-31) and a load-bearing layer (1-32) on the columns (1-2); the positioning screw (1-1) is provided with a plurality of evenly spaced and passed through the stabilizing layer (1-31) and the load-bearing layer (1-32), and is welded to the stabilizing layer (1-31) and the load-bearing layer (1-32); a steel bar frame (1-4) is welded between the four columns (1-2); Sliding grooves (1-21) are provided on both sides of the upright column (1-2); the support base plate (1-3) is annular, and a plurality of positioning screws (1-1) are distributed on the support base plate (1-3) at equal intervals around the circumference; The positioning bracket (1) further includes a horizontal sensing mechanism (2); both ends of the horizontal sensing mechanism (2) are slidably connected to the sliding grooves (1-21) on one side of the two columns (1-2); The horizontal sensing mechanism (2) comprises a mounting seat (2-1), a push-pull rod (2-2) and an adjusting rod (2-3); protrusions (3) are provided at both ends of the mounting seat (2-1), and the mounting seat (2-1) is slidably connected to the sliding groove (1-21) of the column (1-2) through the protrusions (3); a through hole is provided on the side of the mounting seat (2-1), and the push-pull rod (2-2) passes through the through hole; one end of the push-pull rod (2-2) is a handle end (2-21), and the other end is a boss end (2-22); the boss end (2-22) is provided with a threaded hole; the adjusting rod (2-3) is threadedly connected to the threaded hole; A platform (2-31) is provided on the top of the regulating rod (2-3), and a strain gauge (4) is embedded on the platform (2-31); the strain gauge (4) is attached to the bottom surface of the load-bearing layer (1-32), and the strain gauge (4) is provided with four groups of sensing and recording deformation values ​​of the load-bearing layer (1-32) in four directions respectively; The horizontal sensing mechanisms (2) are provided with four and are installed at equal intervals on the side walls of the positioning bracket (1).

2. The steel tube concrete column foundation section according to claim 1, characterized in that: Also includes installation and construction methods: S1. First, embed a positioning bracket (1) on the foundation cushion layer; S2. Install four sets of horizontal sensing mechanisms (2) on the side walls of the positioning bracket (1); S3. After the installation is completed, push the push-pull rod (2-2) on the horizontal sensing mechanism (2) to move the boss end (2-22) to the bottom of the load-bearing layer (1-32), then twist the adjustment rod (2-3) to make the platform (2-31) on the adjustment rod (2-3) rise, and make the strain gauge (4) stick to the bottom surface of the load-bearing layer (1-32); S4, recording the current sensing values ​​of the strain gauges (4) on the four sets of horizontal sensing mechanisms (2); S5, the value of the calibrated strain gauge (4); S6. Installing the steel tube concrete column (5): providing mounting holes at the column foot of the steel tube concrete column (5) corresponding to the number of the positioning screws (1-1) on the positioning bracket (1); the steel tube concrete column (5) passes through the positioning screws (1-1) and is placed on the load-bearing layer (1-32); S7, four sets of strain gauges (4) respectively sense and record the deformation values ​​of the load-bearing layers (1-32) in four directions; S8. By comparing the differences in various directions, a reasonable deviation range is preset. When the value of a certain direction is relatively large, the bottom of the column foot of the corresponding position of the steel tube concrete column (5) is polished in time; S9. Repeated testing and polishing until the deviation is within a reasonable range; S10. After the horizontal calibration is completed, the horizontal sensing mechanism (2) can be removed from the positioning bracket (1) and reused; S11, the positioning bracket (1) and the column foot of the steel tube concrete column (5) are connected and fixed by positioning screws (1-1) and bolts, and a quick-closing net is set between the positioning bracket (1) and the column foot to ensure the quality of the joint and eliminate the need for formwork support; S12, the load-bearing layer (1-32) is welded to the steel lap plate at the foot of the steel tube concrete column (5), so that the positioning bracket (1) and the steel tube concrete column (5) are connected into a whole, and the positioning screw (1-1) is extended into the steel tube concrete column (5) to ensure that the whole connection is reliable; a stiffening plate is set at the foot of the steel tube concrete column (5) to support the steel lap plate and the steel tube column bottom plate, and screws and nuts are fixed between the stiffening plates. After the bottom plate steel bars and the lap plate are welded, the foundation of the steel tube concrete column (5) is fixed.

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