An integrated steel and beam installation structure and construction method

Abstract

The present invention discloses an installation structure of an integrated steel and a crossbeam. An interface is provided on the integrated steel, and an installation cavity is formed on the interface. Installation seams that gradually narrow from top to bottom are provided on both sides of the installation cavity. Tenons are provided at the ends of the crossbeam. The end protrusions of the tenons form a limiting edge. The tenons are placed in the installation cavity from above so that the limiting edge is embedded in the installation seam. A brake iron for fastening the limiting edge is inserted into the gap of the installation seam. A locking bolt for upper positioning the tenon in the installation cavity is provided on the interface. The above-mentioned installation structure of the integrated steel and the crossbeam replaces the original connection method of bolt connection plus welding. The tenon and interface splicing structure plus the brake iron clamping method realize fast and reliable installation on site, reduce the connection gap, increase the preload force, avoid welding on site, ensure the connection strength, reduce the difficulty of on-site assembly, and provide a new idea for the installation method of the crossbeam and the integrated steel. The present invention also discloses a construction method of the integrated steel and the crossbeam.

Description

Technical Field

[0001] The invention relates to the technical field of integrated steel sections, and in particular to an installation structure of integrated steel sections and crossbeams and a construction method. Background Art

[0002] At present, steel structures are increasingly used in the field of building structures. Various new steel structures are constantly emerging and have been applied in the engineering field. The number is also increasing, and it has broad prospects. Integrated steel is a type of steel structure, especially in the height direction, the welding connection method is very advantageous, which reduces the difficulty of on-site construction and improves construction efficiency.

[0003] However, when installing a crossbeam between two integrated steel sections on site, the current method is to first fix it with bolts and then weld it into shape. In this method, there is a connection gap in the bolt connection, which reduces the reliability, and the on-site welding workload is large, which is not conducive to high-altitude operations. The welding quality is difficult to guarantee, the labor intensity is high, the construction efficiency is low, and the on-site welding smoke emissions are large. Therefore, it is hoped to propose a new installation structure or construction method to improve the convenience of on-site construction. Summary of the invention

[0004] One object of the present invention is to provide an integrated steel and beam installation structure, change the existing beam connection structure, achieve simple installation of the beam, avoid a large number of on-site welding operations, and ensure connection reliability.

[0005] Another object of the present invention is to provide a construction method of integrated steel and beams to improve the convenience of on-site construction.

[0006] To achieve the above object, on the one hand, the present invention adopts the following technical solutions:

[0007] An installation structure of an integrated steel and a crossbeam, wherein an interface is provided on the integrated steel, an installation cavity is formed on the interface, installation seams which are gradually narrowed from top to bottom are provided on both sides of the installation cavity, a tenon is provided at the end of the crossbeam, the end of the tenon is protruded to form a limiting edge, the tenon is placed in the installation cavity from top to bottom so that the limiting edge is embedded in the installation seam, a brake iron for fastening the limiting edge is inserted into the gap of the installation seam, and a locking bolt for upper limiting the tenon in the installation cavity is provided on the interface.

[0008] In particular, the interface includes a bottom plate and a side plate welded to the integrated steel, the installation cavity is enclosed by the bottom plate and the two side plates, a wedge block is arranged on the inner wall of the side plate, and the two wedge blocks are arranged at intervals to form an installation seam.

[0009] Particularly, a notch is provided on the bottom plate directly opposite to the installation seam.

[0010] In particular, a reinforcing steel cage is provided through the integrated steel section of the mounting interface.

[0011] In particular, the crossbeam includes a crossbeam channel steel, steel bars and stirrups. At least four steel bars are arranged in the crossbeam channel steel along its length direction. The four steel bars are distributed at the four corners of the cross-section of the crossbeam channel steel. A number of stirrups are circumferentially bundled to the outer circle of each steel bar to form a steel bar cage. The tenon is arranged at the end of the crossbeam channel steel and embedded in the inner circle of the steel bar. The outer wall of the tenon is welded to the steel bar, and the limiter extends along the end face of the crossbeam channel steel.

[0012] In particular, the tenon comprises an I-beam welded on the crossbeam, an end plate is arranged at the end of the I-beam, the edge of the end plate forms a limit edge, and the tenon is placed against the bottom of the crossbeam channel steel, leaving a setting area for the locking bolt.

[0013] In particular, seven steel bars are provided, four of which are close to the two side walls of the tenon, one is close to the bottom of the tenon, and the remaining two are located above the tenon.

[0014] In particular, two steel bars above the tenon extend out of the end surface of the beam channel steel to increase the strength of the tenon joint.

[0015] In particular, a protrusion for pressing each stirrup is provided on the inner wall of the beam channel steel.

[0016] On the other hand, the present invention adopts the following technical solutions:

[0017] The construction method of the installation structure of the integrated steel and beams mentioned above comprises the following steps:

[0018] Preset interfaces on the integrated steel and add tenons at the ends of the beams;

[0019] During on-site construction, place the beam flat from top to bottom between two integrated steel sections, so that the tenon is embedded in the installation seam of the interface to complete the pre-assembly;

[0020] Insert a brake iron into the gap of the installation seam to tighten the tenon and generate a pre-tightening force;

[0021] Screw the locking bolt into the interface to upper limit the tenon to form a lock;

[0022] Concrete is poured integrally into the integrated steel sections, beams, joints and tenons.

[0023] In summary, the beneficial effect of the present invention is that, compared with the prior art, the installation structure and construction method of the integrated steel and the crossbeam replace the original connection method of bolt connection and welding, and realize fast and reliable installation on site through the tenon and interface splicing structure plus the brake iron clamping method, thereby reducing the connection gap, increasing the preload force, eliminating the need for on-site welding, ensuring the connection strength, and reducing the difficulty of on-site assembly, providing a new idea for the installation method of the crossbeam and the integrated steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of an installation structure of integrated steel and beams provided in an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A top view of

[0026] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0027] Figure 4 It is a structural schematic diagram of adding a tenon to a crossbeam provided by an embodiment of the present invention;

[0028] Figure 5 yes Figure 4 Schematic cross-sectional view of ;

[0029] Figure 6 It is a schematic diagram of the structure of the integrated steel upper interface provided by an embodiment of the present invention;

[0030] Figure 7 It is a schematic diagram of an interface provided on an L-shaped integrated steel according to an embodiment of the present invention;

[0031] Figure 8 It is a schematic diagram of an interface provided on a T-shaped integrated steel according to an embodiment of the present invention;

[0032] Fig. 9 It is a schematic diagram of the construction of the crossbeam installed on the integrated steel provided by an embodiment of the present invention;

[0033] Fig.10 yes Fig. 9 Top view of the . DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0035] See also Figures 1 to 6 As shown, this embodiment provides a mounting structure of an integrated steel and a crossbeam, wherein an interface 3 is provided on the integrated steel 1, a mounting cavity is formed on the interface 3, mounting seams 31 which are gradually narrowed from top to bottom are provided on both sides of the mounting cavity, the interface 3 comprises a bottom plate 32 and a side plate 33 welded to the integrated steel 1, the mounting cavity is enclosed by the bottom plate 32 and the two side plates 33, a wedge block 34 is provided on the inner side wall of the side plate 33, the two wedge blocks 34 are arranged at intervals to form the mounting seam 31, a notch 35 is provided on the bottom plate 32 opposite to the mounting seam 31, for observing the assembly condition and facilitating disassembly.

[0036] In order to ensure the connection reliability at the interface 3 and reduce the strength requirements of the integrated steel 1 itself, a reinforcing steel cage 7 is provided in the integrated steel 1 where the interface can be installed. The reinforcing steel cage 7 includes a number of main bars and stirrups. The main bars are provided in the integrated steel 1 and extend along the length direction of the integrated steel 1. There are at least four main bars, which are distributed at the four corners of the integrated steel 1 to form a main bar group. Multiple stirrups are arranged at intervals along the length direction of the main bar group, and each stirrup is tied and fixed along the outer circumference of each main bar. In addition, in order to improve the reliability of the splicing, at least one end of the main bar group extends out of the end edge of the integrated steel, so as to be inserted into the end edge of another integrated steel to form a connection.

[0037] A tenon 4 is provided at the end of the crossbeam 2, and the end protrusion 24 of the tenon 4 forms a limiting edge 41. The tenon 4 is placed into the installation cavity from above so that the limiting edge 41 is embedded in the installation seam 31, and a brake iron 5 for fastening the limiting edge 41 is inserted into the gap of the installation seam 31. Here, the inclination angles of the brake iron 5 and the hypotenuse of the wedge block 34 are consistent, preferably 70°~80°, and a locking bolt 6 for upper limiting the tenon 4 in the installation cavity is provided on the interface 3.

[0038] It should be noted that the connection method using the tenon 4 and the brake iron 5 can eliminate the connection gap caused by the manufacturing tolerance, eliminate the need for on-site welding, and can generate a pre-tightening force to improve the connection reliability.

[0039] The crossbeam 2 includes a crossbeam channel steel 21, steel bars 22 and stirrups 23. At least four steel bars 22 are arranged in the crossbeam channel steel 21 along its length direction. The four steel bars 22 are distributed at the four corners of the cross section of the crossbeam channel steel 21. A number of stirrups 23 are circumferentially bundled to the outer ring of each steel bar 22 to form a steel cage. The tenon 4 is arranged at the end of the crossbeam channel steel 21 and embedded in the inner ring of the steel bar 22. The outer wall of the tenon 4 is welded to the steel bar 22, and the limit edge 41 extends out of the end face of the crossbeam channel steel 21.

[0040] The tenon 4 includes an I-shaped beam welded to the cross beam 2, and an end plate is provided at the end of the I-shaped beam, and the edge of the end plate forms a limit edge 41. The tenon 4 is placed against the bottom of the cross beam channel steel 21, leaving a setting area for the locking bolt 6. According to the shape of the tenon 4, there are seven steel bars 22, four of which are close to the two side walls of the tenon 4, one is close to the bottom of the tenon 4, and the remaining two are located above the tenon 4. In particular, the two steel bars 22 above the tenon 4 extend out of the end surface of the cross beam channel steel 21 to increase the strength of the tenon joint.

[0041] The inner wall of the beam channel steel 21 is provided with protrusions 24 for pressing the stirrups 23 .

[0042] The above beam installation structure is not only applicable to the I-shaped integrated steel, but also to other shapes of integrated steel, such as L-shaped, T-shaped, etc., just need to add interfaces on the integrated steel to adapt to the needs, such as Figure 7 and Figure 8 In addition, the structure of the crossbeam and the tenon is not limited, and eaves beams and tenons of other shapes can also be used similarly.

[0043] Fig. 9 and Fig.10 This is a schematic diagram of an integrated steel structure using this installation structure. In this regard, this embodiment also provides a construction method for an integrated steel and a crossbeam, including the following steps:

[0044] 1) Preset an interface 3 on the integrated steel 1 and add a tenon 4 at the end of the beam 2;

[0045] 2) During on-site construction, the crossbeam 2 is placed flat between the two integrated steel sections 1 from top to bottom, so that the tenon 4 is embedded in the installation seam 31 of the interface 3 to complete the pre-assembly;

[0046] 3) Insert the brake iron 5 into the gap of the installation seam 31 and tighten the tenon 4 to generate a pre-tightening force;

[0047] 4) Screw the locking bolt 6 into the interface 3 to upper-limit the tenon 4 to form a lock;

[0048] 5) Concrete is poured integrally in the integrated steel 1, the cross beam 2, the interface 3 and the tenon 4.

[0049] In summary, the installation structure and construction method of the integrated steel and the crossbeam replace the original connection method of bolt connection and welding, and realize fast and reliable installation on site through the tenon and interface splicing structure plus the brake iron clamping method, reduce the connection gap, increase the preload force, eliminate the need for on-site welding, ensure the connection strength, reduce the difficulty of on-site assembly, and provide a new idea for the installation method of the crossbeam and the integrated steel.

[0050] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above examples. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An integrated steel and beam installation structure, characterized in that: The integrated steel is provided with an interface, a mounting cavity is formed on the interface, mounting slits which are gradually narrowed from top to bottom are provided on both sides of the mounting cavity, tenons are provided at the ends of the crossbeam, the end portions of the tenons are raised to form a limiting edge, the tenons are put into the mounting cavity from above so that the limiting edge is embedded in the mounting slit, a brake iron for fastening the limiting edge is inserted into the gap of the mounting slit, and a locking bolt for upper-limiting the tenon in the mounting cavity is provided on the interface; The interface comprises a bottom plate and a side plate welded on the integrated steel, the installation cavity is enclosed by the bottom plate and the two side plates, a wedge block is arranged on the inner side wall of the side plate, and the two wedge blocks are arranged at intervals to form the installation seam; The tenon comprises an I-beam welded on the crossbeam, an end plate is arranged at the end of the I-beam, the edge of the end plate forms the limiting edge, and the tenon is placed against the bottom of the crossbeam channel steel, leaving a setting area for the locking bolt.

2. The integrated steel and beam installation structure according to claim 1 is characterized in that: A notch is provided on the bottom plate opposite to the installation seam.

3. The integrated steel and beam installation structure according to claim 1 is characterized in that: A reinforcing steel cage is passed through the integrated steel of the installation interface.

4. The integrated steel and beam installation structure according to claim 1 is characterized in that: The crossbeam includes a crossbeam channel steel, steel bars and stirrups. At least four of the steel bars are arranged in the crossbeam channel steel along its length direction. The four steel bars are distributed at the four corners of the cross-section of the crossbeam channel steel. Several stirrups are circumferentially bundled to the outer ring of each steel bar to form a steel cage. The tenon is arranged at the end of the crossbeam channel steel and embedded in the inner ring of the steel bar. The outer wall of the tenon is welded to the steel bar. The limiter extends along the end face of the crossbeam channel steel.

5. The integrated steel and beam installation structure according to claim 1 is characterized in that: There are seven steel bars, four of which are close to the two side walls of the tenon, one is close to the bottom of the tenon, and the remaining two are located above the tenon.

6. The integrated steel and beam installation structure according to claim 5, characterized in that: The two steel bars above the tenon extend out of the end face of the beam channel steel to increase the strength of the tenon joint.

7. The integrated steel and beam installation structure according to claim 4 is characterized in that: The inner wall of the beam channel steel is provided with protrusions for pressing each stirrup.

8. A construction method for the installation structure of integrated steel and beams according to any one of claims 1 to 7, characterized in that: Includes steps: Preset interfaces on the integrated steel and add tenons at the ends of the beams; During on-site construction, place the beam flat from top to bottom between two integrated steel sections, so that the tenon is embedded in the installation seam of the interface to complete the pre-assembly; Insert a brake iron into the gap of the installation seam to tighten the tenon and generate a pre-tightening force; Screw the locking bolt into the interface to upper limit the tenon to form a lock; Concrete is poured integrally into the integrated steel sections, beams, joints and tenons.

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