Steel frame supporting leg rigid connection node positioning structure

Abstract

The utility model belongs to the technical field of steel structure engineering construction, and particularly relates to a steel frame supporting leg rigid connection node positioning structure. Comprising a bearing platform, column piers, steel frame supporting legs, steel frame supporting leg connecting plates, locking anchor bolts, adjusting anchor bolts and common anchor bolts. The steel frame supporting legs are connected to the steel frame supporting leg connecting plates, and non-shrinkage cushion layers are arranged between the steel frame supporting leg connecting plates and the column piers. The steel frame supporting leg connecting plate is connected to the top of the column pier through the locking anchor bolt, the adjusting anchor bolt and the common anchor bolt. Locking nuts are arranged at the upper and lower parts of the locking anchor bolts; the locking nuts are fixedly connected with positioning steel bars arranged in the column piers, so that the locking anchor bolts are accurately positioned; the adjusting anchor bolts are located at the two opposite angles of the steel frame supporting legs. The common anchor bolts are positioned at the other two opposite angles of the steel frame supporting legs; by adjusting the vertical positioning of the locking anchor bolts, the X-direction axis position and the Y-direction axis position of the plane of the steel frame supporting leg can be effectively ensured to meet the design requirements; construction errors are reduced, reworking of construction procedures is avoided, and the overall construction period is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel structure engineering construction, and specifically relates to a positioning structure for a rigid connection node of a steel frame leg. Background Technique

[0002] The current installation and positioning of steel structure columns is a rather troublesome process. Even if the positions and elevations of the pre-embedded anchor bolts are correct, during the installation process, it is also necessary to ensure the correct position of the longitudinal and transverse centerlines of the column, the correct control elevation position of the column, and the correct verticality of the column at the same time. Due to the large swing of the steel structure column during the hoisting process, it is quite difficult to ensure the correct position of the longitudinal and transverse centerlines of the column. At present, during the construction of steel structures, when measuring after the steel frame legs are hoisted in place, the elevation of the column pier top does not meet the design requirements, and the top surface of the column pier needs to be reworked. Even after rework, it is difficult to accurately position the plane X and Y axis positions of this method.

[0003] The Chinese patent with the application number 201910986604.0 discloses a "rapid positioning device and construction method for the installation of steel structure columns", which can quickly position the installation of steel structure columns for the process of aligning the centerlines during the installation of a small number of steel structure columns. This technology is only applicable to the installation of steel columns with a small number and a large cross-section of I-beam columns. Since the positioning pins in the positioning device are quadrangular pyramids, and the edges of the positioning pins need to be parallel to the four sides of the steel column and welded to the bottom of the column base plate during installation, the manufacturing and installation processes are relatively complex. When it is actually applied to the installation of steel columns with a large number and a small I-beam cross-section, this process may be too complex and the practicability is relatively weak. Content of the Utility Model

[0004] The utility model overcomes the deficiencies of the prior art and provides a positioning structure for a rigid connection node of a steel frame leg, solving the problem of rework in the installation of the steel frame leg node due to inaccurate plane positioning, errors in the elevation and verticality of the column pier top surface.

[0005] In order to achieve the above purpose, the utility model is realized through the following technical solutions.

[0006] A positioning structure for a rigid connection node of a steel frame leg includes a bearing platform, a column pier, and a steel frame leg. The column pier is connected to the bearing platform. It also includes a steel frame leg connecting plate, locking anchor bolts, adjusting anchor bolts, and ordinary anchor bolts. The bottom of the steel frame leg is fixedly connected to the steel frame leg connecting plate, and a non-shrinkage cushion layer is provided between the bottom of the steel frame leg connecting plate and the top of the column pier. The steel frame leg connecting plate is connected to the top of the column pier through locking anchor bolts, adjusting anchor bolts, and ordinary anchor bolts.

[0007] The locking anchor bolts are located at the middle positions on both sides of the web of the steel frame leg; locking nuts are provided both above and below the locking anchor bolts, and the locking nuts are arranged inside the pier. The locking nuts are fixedly connected to the positioning steel bars arranged inside the pier to accurately position the locking anchor bolts; the adjusting anchor bolts are located at two diagonal corners of the steel frame leg; the ordinary anchor bolts are located at the other two diagonal corners of the steel frame leg; adjusting nuts are provided for the adjusting anchor bolts, and the adjusting nuts are located inside the non-shrinkage cushion; the tops of the locking anchor bolts, adjusting anchor bolts and ordinary anchor bolts pass through the top surface of the connecting plate of the steel frame leg and are connected and fixed; the adjusting anchor bolts and ordinary anchor bolts are both parallel to the locking anchor bolts.

[0008] Further, an ordinary anchor bolt is also provided between the adjusting anchor bolt and the ordinary anchor bolt on the same side of the steel frame leg. The two ordinary anchor bolts and one adjusting anchor bolt on the same side are located on the same line perpendicular to the web.

[0009] Furthermore, the steel frame leg is of I-shaped steel structure. Two connecting support plates are respectively welded on the two flange plates on both sides of the steel frame leg, and the middle ordinary anchor bolt is located between the two connecting support plates on the same side.

[0010] Further, the connecting plate of the steel frame leg is provided with bolt holes, and the tops of the locking anchor bolts, adjusting anchor bolts and ordinary anchor bolts pass through the corresponding bolt holes and are connected and fixed by double nuts.

[0011] Further, a number of grouting holes for pouring concrete into the non-shrinkage cushion are provided on the connecting plate of the steel frame leg.

[0012] The beneficial effects of the present utility model compared with the prior art are as follows:

[0013] By accurately fixing and pre-embedding all the anchor bolts in the pier and adjusting the vertical positioning of the locking anchor bolts, and welding the upper and lower locking nuts to the positioning steel bars in the short column, the present utility model can effectively ensure that the axis positions of the steel frame leg in the X and Y directions of the plane meet the design requirements. By adjusting the elevation of the adjusting nuts and the thickness of the non-shrinkage cushion, the installation elevation and verticality of the steel frame leg meet the design requirements. The present utility model reduces the construction error, avoids the rework of construction procedures, shortens the overall construction period, and improves the project quality. Description of the Drawings

[0014] Figure 1 It is a side view of the rigid connection joint positioning structure of the steel frame leg described in the present utility model;

[0015] Figure 2 It is a top view of the rigid connection joint positioning structure of the steel frame leg described in the present utility model;

[0016] In the figure:

[0017] 1 - Bearing platform, 2 - Pier, 3 - Steel frame leg, 4 - Steel frame leg connection plate, 5 - Locking anchor bolt, 6 - Adjusting anchor bolt, 7 - Ordinary anchor bolt, 8 - Non-shrinking cushion layer, 9 - Grouting hole, 10 - Locking nut, 11 - Adjusting nut, 12 - Double nut, 13 - Connecting support plate. Detailed implementation manner

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail in combination with embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. The technical solutions of the present utility model will be described in detail below in combination with embodiments and drawings, but the protection scope is not limited by this.

[0019] As Figure 1 and Figure 2 shown, this embodiment provides a positioning structure for the rigid connection node of the steel frame leg, including: bearing platform 1, pier 2, steel frame leg 3, steel frame leg connection plate 4, locking anchor bolt 5, adjusting anchor bolt 6, ordinary anchor bolt 7, non-shrinking cushion layer 8, grouting hole 9, locking nut 10, adjusting nut 11, double nut 12.

[0020] The span of a certain factory building is 24 meters. The steel frame leg 3 is of I-shaped steel structure. The web height of the steel frame leg 3 is 500 mm, the thickness is 16 mm, the flange width is 400 mm, and the thickness is 20 mm. Two connecting support plates 13 are respectively welded on both flanges of the steel frame leg 3. The specification of the connecting support plate 13 is 300 mm * 130 mm * 8 mm. The specification of the steel frame leg connection plate 4 is 800 mm * 700 mm * 40 mm (thickness).

[0021] The pier 2 is connected to the bearing platform 1. The bottom of the steel frame leg 3 is welded to the steel frame leg connection plate 4. A non-shrinking cushion layer 8 is provided between the steel frame leg connection plate 4 and the top of the pier 2. The steel frame leg connection plate 4 is connected to the top of the pier 2 through the locking anchor bolt 5, the adjusting anchor bolt 6, and the ordinary anchor bolt 7. The specification of the pier 2 is: 1000 mm * 900 mm * 800 mm (height).

[0022] The locking anchor bolts 5, adjusting anchor bolts 6 and ordinary anchor bolts 7 are embedded in the pier 2; locking nuts 10 are provided both above and below the locking anchor bolts 5, and the locking nuts 10 are arranged in the pier 2. The locking nuts 10 are welded to the positioning steel bars arranged in the pier 2 so that the locking nuts 10 above and below the locking anchor bolts 5 can obtain accurate positioning. The number of locking anchor bolts 5 is 2, and they are located at the middle positions on both sides of the web of the steel frame leg 3; the adjusting anchor bolts 6 are arranged at two diagonal corners of the steel frame leg 3; one ordinary anchor bolt 7 is respectively arranged at the other two diagonal corners of the steel frame leg 3; an ordinary anchor bolt 7 is also arranged between the adjusting anchor bolt 6 and the ordinary anchor bolt 7 on the same side of the steel frame leg 3, and the two ordinary anchor bolts 7 and one adjusting anchor bolt 6 on the same side are located on a line perpendicular to the web; the ordinary anchor bolt 7 in the middle is located between the two connecting support plates 13 on the same side. The adjusting anchor bolt 6 is provided with an adjusting nut 11, and the adjusting nut 11 is located in the non-shrinkage cushion layer 8 between the lower part of the steel frame leg connecting plate 4 and the top of the pier 2. The tops of the locking anchor bolts 5, adjusting anchor bolts 6 and ordinary anchor bolts 7 penetrate through the top surface of the steel frame leg connecting plate 4 and are connected and fixed by double nuts 12.

[0023] The locking anchor bolts 5, adjusting anchor bolts 6 and ordinary anchor bolts 7 are all of model M24; the bolt hole diameter of the steel frame leg connecting plate 4 is 30 mm, and the hole diameter of the steel frame leg connecting plate 4 is 6 mm larger than the diameters of the locking anchor bolts 5, adjusting anchor bolts 6 and ordinary anchor bolts 7.

[0024] A number of grouting holes 9 are provided on the steel frame leg connecting plate 4 for pouring concrete into the non-shrinkage cushion layer 8.

[0025] The specific construction method of the positioning structure is as follows:

[0026] During construction, the locking anchor bolts 5, adjusting anchor bolts 6 and ordinary anchor bolts 7 are accurately fixed and embedded in the pier 2;

[0027] Then, first install the locking anchor bolts 5: locking nuts 10 are provided both above and below the locking anchor bolts 5, and the locking nuts 10 are arranged in the pier 2 below the steel frame leg connecting plate 4. The upper and lower locking nuts 10 are welded to the positioning steel bars arranged in the pier 2 and obtain accurate positioning to ensure that the plane X and Y axis positions of the steel frame leg 4 during installation meet the design requirements;

[0028] After that, install the adjusting anchor bolts 6: accurately fix the adjusting anchor bolts 6. The adjusting anchor bolts 6 are provided with adjusting nuts 11, and a non-shrinkage cushion layer 8 is provided between the steel frame leg connecting plate 4 and the top of the pier 2; the adjusting nut 11 is located in the non-shrinkage cushion layer 8 between the lower part of the steel frame leg connecting plate 4 and the top of the pier 2.

[0029] Next, accurately fix the four ordinary anchor bolts 7. Make the adjusting anchor bolt 6 and the ordinary anchor bolts 7 parallel to the locking anchor bolt 5.

[0030] The tops of the locking anchor bolt 5, the adjusting anchor bolt 6, and the ordinary anchor bolts 7 all pass through the top of the pier 2.

[0031] Pour concrete into the steel bar framework of the pier 2 to form the pier 2. After the concrete strength reaches the design requirements, accurately connect all the locking anchor bolts 5, adjusting anchor bolts 6, and ordinary anchor bolts 7 with the bolt holes of the steel frame leg connecting plate 4 in a matching manner.

[0032] After that, adjust the elevation of the adjusting nut 11 of the adjusting bolt 6 so that the installation elevation and verticality of the steel frame leg 3 meet the design requirements; at the same time, the thickness of the non-shrinkage cushion 8 between the steel frame leg connecting plate 4 and the top of the pier 2 is also determined accordingly. Finally, install all the double nuts 12 on the locking anchor bolt 5, adjusting anchor bolt 6, and ordinary anchor bolts 7.

[0033] After on-site acceptance and confirmation that the X and Y axis positions of the steel frame leg 3 meet the design requirements, the elevation of the steel frame leg connecting plate 4 meets the requirements, and the verticality of the steel frame leg 3 meets the design requirements, pour the non-shrinkage cushion 8 through several grouting holes 9 (25mm * 25mm) provided on the steel frame leg connecting plate 4.

[0034] Subsequently, lock all the double nuts 12 of the locking anchor bolt 5, adjusting anchor bolt 6, and ordinary anchor bolts 7; the installation is completed.

[0035] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific embodiments of the present invention are limited to this. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the premise of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the patent protection scope determined by the claims submitted for the present invention.

Claims

1. A steel frame leg rigid joint node positioning structure, comprising a cap (1), a column pier (2) and a steel frame leg (3); the column pier (2) is connected to the cap (1); characterized in that: It also includes a steel frame leg connecting plate (4), a locking anchor bolt (5), an adjusting anchor bolt (6) and a common anchor bolt (7); the bottom of the steel frame leg (3) is fixedly connected to the steel frame leg connecting plate (4), and a non-shrinkage cushion layer (8) is provided between the bottom of the steel frame leg connecting plate (4) and the top of the column pier (2); the steel frame leg connecting plate (4) is connected to the top of the column pier (2) through the locking anchor bolt (5), the adjusting anchor bolt (6) and the common anchor bolt (7); The locking anchor bolt (5) is located at the middle position of both sides of the web of the steel frame leg (3); the locking anchor bolt (5) is provided with locking nuts (10) at the top and bottom, the locking nuts (10) are arranged in the column pier (2), and the locking nuts (10) are fixedly connected with the positioning steel bars arranged in the column pier (2) so that the locking anchor bolt (5) is accurately positioned; the adjustment anchor bolt (6) is located at two diagonal positions of the steel frame leg (3); the common anchor bolt (7) is located at the other two diagonal positions of the steel frame leg (3); the adjustment anchor bolt (6) is provided with an adjustment nut (11), and the adjustment nut (11) is located in the non-shrinkage cushion layer (8); the tops of the locking anchor bolt (5), the adjustment anchor bolt (6) and the common anchor bolt (7) pass through the top surface of the steel frame leg connecting plate (4) and are connected and fixed; the adjustment anchor bolt (6) and the common anchor bolt (7) are parallel to the locking anchor bolt (5).

2. A steel frame leg rigid joint positioning structure according to claim 1, characterized in that: A common anchor bolt (7) is further arranged between the adjustment anchor bolt (6) and the common anchor bolt (7) on the same side of the steel frame leg (3), and the two common anchor bolts (7) and the adjustment anchor bolt (6) on the same side are located on the same line perpendicular to the web.

3. A steel frame leg rigid joint positioning structure according to claim 2, characterized in that: The steel frame leg (3) is an I-beam structure. Two connecting support plates (13) are respectively welded to the flanges on both sides of the steel frame leg (3). The middle common anchor bolt (7) is located between the two connecting support plates (13) on the same side.

4. The steel frame leg rigid joint node positioning structure according to claim 1, characterized in that: The steel frame leg connecting plate (4) is provided with bolt holes, and the tops of the locking anchor bolts (5), the adjusting anchor bolts (6) and the common anchor bolts (7) pass through the corresponding bolt holes and are connected and fixed by double nuts (12).

5. The steel frame leg rigid joint node positioning structure according to claim 1, characterized in that: The steel frame leg connecting plate (4) is provided with a plurality of grouting holes (9) for pouring concrete into the non-shrinkage cushion layer (8).

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