A construction method for buckling restrained brace structure

Abstract

The present invention relates to the field of building technology, and discloses a construction method of a buckling restrained brace structure, comprising the following steps: scanning a building structure, performing a three-dimensional comparison between the scanned parameters and a BIM building model, and adjusting the model; deepening the design and calculation inspection of the buckling restrained brace structure; performing three-dimensional modeling using BIM technology according to the deepening design results, and determining the installation steps; drawing a processing drawing according to the deepening drawing, and performing factory production; installing the buckling restrained brace structure; testing the buckling restrained brace structure, and performing anti-corrosion and fireproofing construction. The present invention uses three-dimensional scanning technology to accurately obtain the original building structure size, can provide accurate data for node plate blanking production, avoids thermal stress caused by secondary processing, and thus ensures the seismic effect and installation quality of the structure. Through BIM technology, construction simulation and installation process simulation can be performed, and reasonable construction processes can be quickly and accurately arranged, thereby improving installation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of construction, and in particular to a construction method of a buckling restrained bracing structure. Background Art

[0002] The installation of general buckling restrained braces mainly involves pre-embedded node plates on newly built concrete structural members or welding of reinforcement bars on old concrete structural members to achieve the installation of node plates. However, the node plates installed by the above-mentioned technology can only effectively connect the buckling restrained braces with the main structure, and the node plates do not have any reinforcement effect on the main structure.

[0003] In addition, the traditional method of measuring the on-site data and then handing it over to the factory for node plate processing can only correct the relevant errors by performing secondary processing of the node plate on-site through methods such as thermal cutting, which will leave thermal stress and affect the seismic effect and installation quality.

[0004] Secondly, components such as node plates and buckling restrained braces are large in size (up to 2 to 3 meters in length) and mass (400 to 1200 kg). Under different on-site conditions, the installation process requires high rationality in arrangement, which seriously affects the installation efficiency. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a construction method of a buckling restrained support structure, which provides accurate data for node plate blanking production, avoids thermal stress caused by secondary processing, and improves installation quality and efficiency.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A construction method of a buckling restrained brace structure comprises the following steps:

[0008] S1. Scan the building structure, compare the scanned parameters with the BIM building model in three dimensions, and adjust the model;

[0009] S2. In-depth design and calculation verification of buckling restrained brace structure;

[0010] S3. Based on the in-depth design results, use BIM technology to conduct 3D modeling and determine the installation steps;

[0011] S4. Draw the processing drawing according to the detailed drawing and carry out factory production;

[0012] S5. Install the buckling restraint support structure;

[0013] S6. Inspect the buckling restraint support structure and carry out anti-corrosion and fire prevention construction.

[0014] Preferably, the buckling restraint support structure includes relatively arranged columns and a cross beam connecting the two columns, an upper node plate is provided on the cross beam, a lower node plate is provided on the column, and a buckling restraint support is connected between the upper node plate and the lower node plate, characterized in that a first rib plate is fixedly provided on the cross beam, the first rib plate is connected to the upper node plate, a second rib plate is fixedly provided on the column, and the second rib plate is connected to the lower node plate.

[0015] Preferably, a first connecting plate is provided on the beam surface of the cross beam, and the upper node plate is fixed on the first connecting plate.

[0016] Preferably, the upper beam surface and the lower beam surface of the cross beam are both provided with a first connecting plate, and the two ends of the first rib plate are respectively connected to the upper node plates arranged on the upper beam surface and the lower beam surface.

[0017] Preferably, the upper node plate comprises a main body plate, and auxiliary plates are respectively provided at both ends of the main body plate, and the auxiliary plates are cross-arranged with the main body plate.

[0018] Preferably, a second connecting plate is provided at the connection between the column and the crossbeam, and the lower node plate is fixed on the second connecting plate.

[0019] Preferably, the second connecting plate is L-shaped, and comprises a first plate body and a second plate body which are perpendicular to each other, the first plate body is connected to the cross beam, and the second plate body is connected to the column.

[0020] Preferably, the upper beam surface and the lower beam surface of the cross beam are both provided with a second connecting plate, and the two ends of the second rib plate are respectively connected to the lower node plates arranged on the upper beam surface and the lower beam surface.

[0021] Preferably, in step S2, the buckling restrained brace detailed design includes buckling restrained brace form detailed design, buckling restrained brace appearance dimension detailed design, buckling restrained brace node detailed design and test piece determination.

[0022] Preferably, in step S5, the specific installation method is: after the buckling restraint support is pulled into place, the lower end of the buckling restraint support is temporarily fixed by a clamp, and the upper end of the buckling restraint support is put into place and temporarily fixed by a clamp by pulling the upper end of the buckling restraint support and prying the front and back surfaces of the buckling restraint support; after the buckling restraint support is temporarily fixed by the clamp, the two ends of the buckling restraint support are corrected, and after the correction, the buckling restraint support is fixed by spot welding and the clamp is removed;

[0023] Among them, the welding sequence is: first weld the lower end node of the support, and then weld the upper end node.

[0024] Compared with the prior art, the construction method of a buckling restrained support structure of an embodiment of the present invention has the following beneficial effects: the original building structure dimensions can be accurately obtained through three-dimensional scanning technology, accurate data can be provided for node plate blanking production, thermal stress generated by secondary processing can be avoided, and thus the seismic effect and installation quality of the structure can be ensured. Construction simulation and installation process can be simulated through BIM technology, and reasonable construction processes can be arranged quickly and accurately, thereby improving installation efficiency. The present invention has a simple structure, good use effect, and is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a construction flow chart of the buckling restrained support structure of the present invention.

[0026] Figure 2 It is a schematic structural diagram of the buckling restrained support structure of the present invention.

[0027] Figure 3 It is a schematic diagram of the crossbeam structure of the buckling restrained support structure of the present invention.

[0028] Figure 4 It is a schematic diagram of the column structure of the buckling restrained support structure of the present invention.

[0029] Among them: 1-column, 2-beam, 3-upper node plate, 31-main plate, 32-auxiliary plate, 4-lower node plate, 5-buckling restraint support, 6-first rib plate, 7-second rib plate, 8-first connecting plate, 9-second connecting plate. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] Terminology explanation:

[0032] Buckling restrained brace: used to control the torsion displacement ratio of the main structure in earthquake-resistant engineering. It can act as a "fuse" in a major earthquake to protect the main structure from serious damage. After the earthquake, the damaged earthquake-resistant support components can be easily replaced after verification.

[0033] Point cloud technology: Scan the original structure / reinforced structure through 3D scanning technology to obtain the actual dimensions on site and provide dimension data for factory processing.

[0034] BIM construction simulation: Through BIM technology (Building Information Modeling technology), the construction process is simulated on the computer to verify the feasibility and operability of the construction plan, thereby facilitating construction optimization and other work, so that the construction efficiency and quality in the actual construction process are guaranteed.

[0035] like Figure 1 As shown, a construction method of a buckling restrained support structure in a preferred embodiment of the present invention comprises the following steps:

[0036] S1. Scan the building structure with a 3D scanner, perform 3D matching between the scanned parameters and the BIM building model, and adjust the model;

[0037] S2. In-depth design and calculation inspection of buckling restrained brace structure; among which, the in-depth design of buckling restrained brace includes the in-depth design of buckling restrained brace form, appearance dimension, buckling restrained brace node and the determination of test pieces.

[0038] like Figure 2-4 As shown, a buckling restraint support structure of a preferred embodiment of the present invention comprises columns 1 arranged opposite to each other and a crossbeam 2 connecting the two columns 1, an upper node plate 3 is arranged on the crossbeam 2, a lower node plate 4 is arranged on the column 1, a buckling restraint support 5 is connected between the upper node plate 3 and the lower node plate 4, a first rib 6 is fixedly arranged on the crossbeam 2, and the first rib 6 is connected to the upper node plate 3, a second rib 7 is fixedly arranged on the column 1, and the second rib 7 is connected to the lower node plate 4. By arranging the first rib 6 on the crossbeam 2 and connecting the first rib 6 to the upper node plate 3, and arranging the second rib 7 on the column 1 and connecting the second rib 7 to the lower node plate 4, the first rib 6 and the second rib 7 are equivalent to the method of externally wrapping all steel to effectively reinforce the column-beam structure, and after being effectively connected with the angle steel of the beam-column itself, the overall shear and bending resistance of the original beam-column structure is improved as a whole, and the seismic effect is further improved.

[0039] Please refer to the attached Figure 2 In this embodiment, the beam surface of the cross beam 2 is provided with a first connecting plate 8, and the upper node plate 3 is fixed on the first connecting plate 8. Specifically, the upper beam surface and the lower beam surface of the cross beam 2 are both provided with a first connecting plate 8, and the two ends of the first rib plate 6 are respectively connected to the upper node plates 3 arranged on the upper beam surface and the lower beam surface, and the first rib plate 6 is also connected to the two opposite first connecting plates 8, so that the first rib plate 6, the first connecting plate 8, the upper node plate 3 and the beam-column structure form a whole, further improving the shear and bending resistance of the original beam-column structure as a whole, and further improving the earthquake resistance effect.

[0040] In this embodiment, the upper node plate 3 includes a main plate 31, and auxiliary plates 32 are respectively provided at both ends of the main plate 31, and the auxiliary plates 32 are arranged crosswise with the main plate 31. The two ends of the upper node plate 3 are respectively connected to two symmetrical buckling restraint supports 5, so the auxiliary plates 32 are respectively arranged at both ends of the main plate 31, so that the auxiliary plates 32 and the main plate 32 are jointly connected to the corresponding buckling restraint supports 5, thereby ensuring the connection effect and connection strength.

[0041] Please refer to the attached Figure 3 In this embodiment, a second connecting plate 9 is provided at the connection between the column 1 and the beam 2, and the lower node plate 4 is fixed on the second connecting plate 9. The second connecting plate 9 is L-shaped, and includes a first plate body and a second plate body which are perpendicular to each other. The first plate body is connected to the beam 2, and the second plate body is connected to the column 1, so that the second connecting plate 9 connects the beam 2 and the column 1 into a whole. At the same time, the upper beam surface and the lower beam surface of the beam 2 are both provided with a second connecting plate 9, and the two ends of the second rib plate 7 are respectively connected to the lower node plate 4 arranged on the upper beam surface and the lower beam surface. Thus, the second rib plate 7, the second connecting plate 9, the lower node plate 4, and the beam-column structure form a whole, which further improves the shear and bending resistance of the original beam-column structure as a whole, and further improves the seismic effect.

[0042] S3. Based on the in-depth design results, use BIM technology to conduct 3D modeling, and use software such as Navisworks to conduct construction simulation to determine the installation sequence;

[0043] S4. Draw the processing drawing according to the detailed drawing and carry out factory production. Specifically, the BRB manufacturer shall issue the node connection detailed drawings and related calculation books for this project and confirm them with the design institute. According to the detailed drawings confirmed by the design institute, the manufacturer shall draw the processing drawing. The general contractor shall confirm the processing drawing and the "Product Shock Absorption Effect Report" issued by the manufacturer. BRB and connecting plates must provide the "Out-of-Surface Deformation Full-Scale Test Report" and product qualification certificate certified by CMA when leaving the factory.

[0044] BIM technology is used to assist the factory in cutting materials and ensure cutting accuracy. And through three-dimensional simulation, the installation process of node plates, connecting plates, and BRB supports is simulated to optimize the construction sequence and improve the construction safety factor and construction speed.

[0045] S5. Install the buckling restraint support structure.

[0046] Among them, the connection between the main node plate and the structure, the structure and the node plate are connected by external steel cladding, and the steel cladding and the main body are mainly fixed by structural adhesive bonding and chemical anchor bolts.

[0047] The specific installation method is as follows: after the buckling restraint support is pulled into place, the lower end of the buckling restraint support is temporarily fixed with a clamp, and the upper end of the buckling restraint support is put into place by pulling the upper end of the buckling restraint support and prying the front and back sides of the buckling restraint support and temporarily fixed with a clamp; after the clamp is temporarily fixed, the two ends of the buckling restraint support are corrected, and after correction, they are fixed by spot welding and the clamp is removed;

[0048] Among them, the welding sequence is: first weld the lower end node of the support, and then weld the upper end node.

[0049] S6. Inspect the buckling restraint support structure and carry out anti-corrosion and fire prevention construction.

[0050] Specifically, after welding is completed, all welds should be visually inspected; 20% of the secondary welds should be randomly inspected in accordance with the requirements of the "Steel Structure Welding Code" (GB50661-2011).

[0051] The BRB support and node plate are anti-corrosive with three coats of zinc-rich epoxy paint. The point plate is reinforced with all-steel and must be fire-resistant for at least 3 hours. Depending on the construction requirements, the site is sealed with gypsum board or painted with fire-retardant paint.

[0052] The construction method of the buckling restrained support structure based on the above technical features can accurately obtain the original building structure size through three-dimensional scanning technology, provide accurate data for node plate blanking production, avoid thermal stress caused by secondary processing, and thus ensure the seismic effect and installation quality of the structure. Through BIM technology, construction simulation and installation process simulation can be carried out to quickly and accurately arrange reasonable construction processes, thereby improving installation efficiency. The present invention has a simple structure, good use effect, and is easy to promote and use.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A construction method of a buckling restrained brace structure, characterized in that: The following steps are involved: S1. Scan the building structure, compare the scanned parameters with the BIM building model in three dimensions, and adjust the model; S2. In-depth design and calculation verification of buckling restrained brace structure; S3. Based on the in-depth design results, use BIM technology to conduct 3D modeling and determine the installation steps; S4. Draw the processing drawing according to the detailed drawing and carry out factory production; S5. Install the buckling restraint support structure; S6. Inspect the buckling restraint support structure and carry out anti-corrosion and fire prevention construction; The buckling restraint support structure comprises oppositely arranged columns and a crossbeam connecting the two columns, an upper node plate is arranged on the crossbeam, a lower node plate is arranged on the column, a buckling restraint support is connected between the upper node plate and the lower node plate, a first rib plate is fixedly arranged on the crossbeam, the first rib plate is connected to the upper node plate, a second rib plate is fixedly arranged on the column, and the second rib plate is connected to the lower node plate; The upper beam surface and the lower beam surface of the cross beam are both provided with a first connecting plate, the upper node plate is fixedly arranged on the first connecting plate, and the two ends of the first rib plate are respectively connected to the upper node plates arranged on the upper beam surface and the lower beam surface; The upper node plate comprises a main plate, and auxiliary plates are respectively arranged at both ends of the main plate, and the auxiliary plates are arranged crosswise with the main plate; In step S5, the specific installation method is as follows: after the buckling restraint support is pulled into place, the lower end of the buckling restraint support is temporarily fixed by a clamp, and the upper end of the buckling restraint support is put into place by pulling the upper end of the buckling restraint support and prying the front and back surfaces of the buckling restraint support and temporarily fixed by the clamp; after the buckling restraint support is temporarily fixed by the clamp, the two ends of the buckling restraint support are corrected, and after the correction, the buckling restraint support is fixed by spot welding and the clamp is removed; Among them, the welding sequence is: first weld the lower end node of the support, and then weld the upper end node.

2. The method for constructing a buckling-restrained brace structure according to claim 1, wherein: A second connecting plate is provided at the connection between the column and the crossbeam, and the lower node plate is fixed on the second connecting plate.

3. The method for constructing a buckling-restrained brace structure according to claim 2, wherein: The second connecting plate is L-shaped and includes a first plate body and a second plate body that are perpendicular to each other. The first plate body is connected to the crossbeam, and the second plate body is connected to the column.

4. The method for constructing a buckling restrained brace structure according to claim 3, characterized in that: The upper beam surface and the lower beam surface of the cross beam are both provided with a second connecting plate, and the two ends of the second rib plate are respectively connected to the lower node plates arranged on the upper beam surface and the lower beam surface.

5. The method for constructing a buckling-restrained brace structure according to claim 4, characterized in that: In step S2, the buckling restrained brace detailed design includes buckling restrained brace form detailed design, buckling restrained brace appearance dimension detailed design, buckling restrained brace node detailed design and test piece determination.

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