CN116657791A - Anti-buckling steel plate shear wall and its manufacturing method and installation method - Google Patents

Abstract

The invention relates to a buckling restrained steel plate shear wall, a manufacturing method and an installation method, and belongs to the technical field of assembly type building construction. At least comprises the following steps: placing a steel plate body in an outer frame assembly so that first grooves are formed on first surfaces of the outer frame assembly and the steel plate body, and second grooves are formed on second surfaces of the outer frame assembly and the steel plate body, which are opposite to the first surfaces; templates are respectively arranged at the positions of the first groove and the second groove; simultaneously pouring equal amounts of concrete into the first groove and the second groove after the templates are arranged, and forming a cover plate after the concrete is solidified; and removing the template to obtain the buckling-restrained steel plate shear wall comprising the cover plate, the steel plate body and the outer frame assembly. The manufacturing method can ensure that the surface of the concrete cover plate is smooth, deformation and cracking are avoided, the degree of adhesion between the concrete cover plate and the steel plate body in the shear wall is high, and the construction speed can be improved.

Description

Anti-buckling steel plate shear wall and its manufacturing method and installation method

technical field

The invention relates to the technical field of prefabricated building construction, in particular to a buckling-resistant steel plate shear wall, a manufacturing method, and an installation method.

Background technique

As a high-performance assembled energy-dissipating and shock-absorbing component, the buckling-resistant steel plate shear wall has been widely used in modern buildings because of its good seismic performance and the advantages of building industrialization. Traditional buckling-resistant steel plate shear walls are mainly composed of steel plates, outer frames, and concrete cover plates. The concrete cover plates are prepared separately and then installed on-site on the buckling-resistant steel plate shear wall steel structure modules composed of steel plates and outer frames. However, the concrete cover slab is prone to deformation, cracking, and uneven surface of the concrete cover slab during installation, which affects the construction quality. At the same time, the concrete cover plate needs to be cured for a certain period of time before installation, which affects the overall construction speed of the buckling-resistant steel plate shear wall structure.

Therefore, the prior art still needs to be improved and developed.

Contents of the invention

(1) Technical problems to be solved

In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a method for manufacturing and installing a buckling-resistant steel plate shear wall. High degree of fit, and can increase the construction speed.

(2) Technical solution

In order to achieve the above object, the main technical solutions adopted in the present invention include:

In the first aspect, an embodiment of the present invention provides a method for manufacturing a buckling-resistant steel plate shear wall, which at least includes the following steps:

The steel plate body is placed in the outer frame assembly, so that the first surface of the outer frame assembly and the steel plate body forms a first groove, and the outer frame assembly and the steel plate body are opposite to the first surface the second surface forms a second groove;

Templates are respectively set on the first groove and the second groove;

At the same time, pour an equal amount of concrete into the first groove and the second groove after the template is set, and the concrete is solidified to form a cover plate;

The template is removed to obtain a buckling-resistant steel plate shear wall including the cover plate, the steel plate body and the outer frame assembly.

Optionally, before setting the templates on the first groove and the second groove respectively, the step of:

Place the outer frame assembly with the steel plate body on the bracket.

Optionally, arranging the templates on the first groove and the second groove respectively includes: connecting and fixing the templates through tension screws;

A blocking member is provided at the joint between the formwork and the outer frame assembly to prevent poured concrete from flowing out.

Optionally, the steel plate body includes a first steel plate part and a second steel plate part arranged at both ends of the first steel plate part, and several pegs can be provided on the second steel plate part.

Preferably, before pouring concrete into the first groove and the second groove after the formwork is set, the step further includes:

A release agent is coated on the template and the first steel plate.

In the second aspect, an embodiment of the present invention provides a buckling-resistant steel plate shear wall manufactured according to the above method, and the buckling-resistant steel plate shear wall includes the cover plate, the steel plate body, and the outer frame assembly;

The outer frame assembly is formed by enclosing several steel bars in sequence, and an angle steel is provided on the inner side of the steel bars, and the angle steel is connected with the steel plate body through high-strength bolts.

Optionally, the steel bar is I-beam; lifting lugs can be provided on the steel bar.

Optionally, the steel plate body includes a first steel plate part and a second steel plate part arranged at both ends of the first steel plate part, and several pegs can be provided on the second steel plate part.

Optionally, several steel bars are hung between the pegs, so that the steel bars respectively form a network interlaced structure in the first groove and the second groove.

Preferably, several horse stool bars are arranged between the steel bar and the steel plate body.

In the third aspect, the embodiment of the present invention provides a method for installing the above-mentioned buckling-resistant steel plate shear wall. By hoisting the lugs on the shear wall, the shear wall is connected to the connection module installed on the ground, and the completion Install.

Optionally, the connecting module includes a frame, several shear keys are connected to the lower part of the frame, and the shear keys are connected to the ground.

Optionally, the frame is surrounded by steel columns.

(3) Beneficial effects

The beneficial effects of the present invention are:

(1) The present invention directly forms a cover plate in the outer frame assembly by pouring concrete in the first groove and the second groove formed by the steel plate body, the outer frame assembly and the formwork, and the initial gap between the cover plate and the steel plate body Small size, high fit, and high surface flatness achieve better anti-buckling restraint effect and construction quality, avoid cracking and deformation of the cover plate, and increase the strength and durability of the shear wall. Moreover, according to the application scenario of the shear wall, the conditions of concrete pouring can be adjusted to obtain cover plates with different performances. At the same time, it saves the time for the concrete cover plate to be maintained and then installed, and greatly improves the overall construction speed of the steel frame-buckling-resistant steel plate shear wall structure.

(2) The present invention uses steel bars to encircle and form the outer frame assembly, and the strength of the steel bars is high, which can improve the strength of the outer frame of the shear wall. By arranging the angle steel in the outer frame assembly, when the cover plate expands with heat and contracts with cold, the angle steel can be buffered to prevent damage to the outer frame assembly.

(3) In the present invention, a release agent is coated on the formwork and the first steel plate to make the formwork easy to release.

(4) The steel bars used in the present invention are I-beams, which have more stress stability and bearing capacity. The lugs provided on the steel bars can facilitate installation and transfer.

(5) In the present invention, several pegs are arranged on the second steel plate, and several steel bars are hung between the pegs, and the steel bars form a network interlaced structure. After the concrete is poured, the steel bars and the studs work together to form a cemented body with the concrete.

(6) The blocking member provided at the junction of the formwork and the outer frame assembly in the present invention is used to stop poured concrete from flowing out, promote concrete forming, and form a cover plate whose shape meets requirements.

(7) The horse stool bar of the present invention is used to control the distance between the steel bar and the steel plate body, which can ensure uniform thickness of the cover plate.

(8) In the present invention, after the formwork is removed, the pull screw is replaced with a pull bolt, and the cover plate, the steel plate and the outer frame assembly form a complete anti-buckling steel plate shear wall member, and the cover plates on both sides are firmly fixed in the outer frame assembly. It can be directly and integrally hoisted on the connection module arranged on the ground, and the installation method is convenient and fast, which is beneficial to improving the construction quality.

Description of drawings

Fig. 1 is the structural representation of main parts of shear wall in embodiment 1 of the present invention;

Figure 2 is a schematic diagram of the device when pouring a concrete cover plate in Embodiment 1 of the present invention;

Fig. 3 is a schematic diagram of the connection between the shear wall and the connection module in Embodiment 1 of the present invention.

[Description of Reference Signs]

1: shear wall; 11: outer frame assembly; 111: steel bar; 112: angle steel; 12: steel plate body; 121: first steel plate piece; 122: second steel plate piece; 13: cover plate; 131: bracket; 132 : template; 133: horse stool bar; 134: pull screw; 14: lug; 2: connecting module; 21: shear key; 22: frame.

Detailed ways

In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

In order to better understand the above technical solutions, the following will describe exemplary embodiments of the present invention in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be more clearly and thoroughly understood, and the scope of the present invention can be fully conveyed to those skilled in the art.

Referring to Fig. 1-Fig. 3, in the first aspect, a method for manufacturing a buckling-resistant steel plate shear wall at least includes the following steps:

The steel plate body 12 is placed in the outer frame assembly 11, so that the first surface of the outer frame assembly 11 and the steel plate body 12 forms a first groove, and the second surface of the outer frame assembly 11 and the steel plate body 12 opposite to the first surface forms second groove;

Templates 132 are respectively set on the first groove and the second groove;

At the same time, pour an equal amount of concrete into the first groove and the second groove after the formwork 132 is set, and form the cover plate 13 after the concrete solidifies;

The template 132 is removed to obtain a buckling-resistant steel plate shear wall including the cover plate 13 , the steel plate body 12 and the outer frame assembly 11 .

In the present invention, the cover plate 13 is formed by pouring concrete in the first groove and the second groove, so that the bonding degree between the cover plate 13 and the steel plate body 12 is high, the surface of the cover plate 13 is smooth, and the deformation of the cover plate 13 is avoided. cracking and deformation. Moreover, according to the application scene of the shear wall 1, the conditions for pouring concrete can be adjusted to obtain cover plates 13 with different performances.

Further, before the template 132 is respectively set on the first groove and the second groove, it also includes the steps of:

Place the outer frame assembly 11 on which the steel plate body 12 has been placed on the bracket 131 .

The bracket 131 is used for stabilizing the outer frame assembly 11 and the steel plate body 12, and can ensure that the first groove and the second groove are perpendicular to the ground, so as to facilitate the formation of regular and uniform cover plates on both sides of the steel plate body 12 after concrete pouring.

Further, setting the formwork 132 on the first groove and the second groove is specifically: connecting and fixing the formwork 132 through the pull screw 134;

A blocking member is provided at the joint between the template 132 and the outer frame assembly 11 .

In the present invention, the formwork of the first groove and the formwork of the second groove are connected through the pull screw 134, so that the formwork on both sides is stable and the thickness of the groove is uniform. In the present invention, after the cover plate 13 is formed, the pull screw 134 and the template 132 are removed, and the pull screw 134 is replaced with a pull bolt, so that the cover plates 13 on both sides of the steel plate body 12 are stable.

The template 132 and the outer frame assembly 11 are provided with a blocking member for blocking concrete. Prevent concrete from leaking through gaps when pouring concrete.

In the second aspect, a buckling-resistant steel plate shear wall made by the above-mentioned manufacturing method includes a cover plate 13, a steel plate body 12 and an outer frame assembly 11; the outer frame assembly 11 is formed by enclosing several steel bars 111 in sequence, The inner side of the steel bar 111 is also provided with an angle steel 112, and the angle steel 112 is connected with the steel plate body 12 through high-strength bolts.

Further, the steel bar 111 is an I-beam; the steel bar 111 can be provided with lifting lugs 14 .

Further, the steel plate body 12 includes a first steel plate piece 121 and a second steel plate piece 122 disposed at both ends of the first steel plate piece 121 , and several pegs can be provided on the second steel plate piece 122 .

Further, several steel bars are hung between the pegs, so that the steel bars respectively form a network interlaced structure in the first groove and the second groove.

Further, several horse stool bars 133 are arranged between the steel bar and the steel plate body 12 .

The present invention uses steel bars 111 to encircle and form the outer frame assembly 11 , and the steel bars 111 have high strength, which can improve the strength of the outer frame of the shear wall 1 . By setting the angle steel 112 in the outer frame assembly 11 , when the cover plate 13 expands with heat and contracts with cold, the angle steel 112 can be used as a buffer to prevent the outer frame assembly 11 from being damaged.

The present invention binds the steel bars between the pegs 122, and uses the pegs on the steel plate 122 to hang the steel bars, and the steel bars and the pegs cooperate to form a cemented body with the concrete. The vertically intersecting steel bars hook each other.

By setting the horse stool bar 133 and controlling the distance between the steel bar and the steel plate body 12, the length of the horse stool bar 133 is controlled to be 20±2 mm smaller than the thickness of the cover plate 13. The horse stool bars 133 are in the same vertical direction so that the concrete will fall. At the same time, the horse stool rib 133 can further enhance the strength of the cover plate 13 .

In the third aspect, an installation method of the above-mentioned buckling-resistant steel plate shear wall includes hoisting the lug 14 on the shear wall 1 to connect the shear wall 1 with the connection module 2 arranged on the ground to complete the installation.

Further, the connecting module 2 includes a frame 22, several shear keys 21 are connected to the lower part of the frame 22, and the shear keys 21 are connected to the ground.

Further, the frame 22 is surrounded by steel columns.

Example 1:

The manufacturing method of buckling-resistant steel plate shear wall in the present embodiment comprises the following steps:

Step 1. The first steel plate 121 is welded by a splicing welding process. The welding process is gas shielded arc welding. After welding, the surface roughness of the first steel plate 121 is controlled within 10mm. Studs are welded to the second sheet metal part 122 . The steel bars 111 are welded to form the outer frame assembly 11, and the lifting lugs 14 are welded at the same time, and the first steel plate part 121, the second steel plate part 122, the outer frame assembly 11 and the angle steel 112 are connected and assembled by using high-strength bolts, wherein, The second steel plate part 122 is fastened to both ends of the first steel plate part 121 by high-strength bolts to form a steel plate shear wall frame with a groove-like structure.

Among them, the production of the first steel plate 121 and the second steel plate 122 adopts advanced numerical control cutting equipment to improve cutting accuracy and efficiency and ensure the dimensional accuracy of the components. During the prefabrication process of the steel plate body 12, template auxiliary tools are used to ensure the accuracy of the overall shape and size of the component. The required large-size steel plate body 12 is manufactured by splicing and welding.

The first steel plate 121 and the second steel plate 122 are provided with holes, and the holes on the first steel plate 121 and the second steel plate 122 correspond to the positions of the holes on the template 132, which is convenient for the installation of the pull screw 134 .

The welding process adopts gas-shielded arc welding, which improves the welding quality and welding speed, reduces welding deformation, and ensures that the mechanical properties of the weld meet the design requirements.

Among them, the high-strength bolts are commercially available high-strength bolts, preferably high-strength torsional shear bolts, which improve the reliability and shear resistance of the connection.

Step 2, making the cover plate 13 .

Step 2.1, place the bracket 131 on a flat ground. Then hang the steel plate shear wall frame with a groove-like structure on the bracket 131 as a whole, fix it with wooden wedges, wooden squares, and wooden strips, and control the verticality at 90±3°; scaffold.

Step 2.2, perform demoulding treatment: in order to make the cover plate 13 formed by concrete pouring separate from the steel plate body 12, apply an oil-based release agent on the first steel plate piece 121 and the cover plate 13, and perform sanding on the places that need to be sanded.

Step 2.3, tying the steel bar, using the peg 122 to hang the steel bar, the synergistic effect of the steel bar and the peg 122 is beneficial to form a cemented body with the concrete. The vertically intersecting steel bars hook each other. Hang the horse stool reinforcement 133 to control the distance between the steel bar and the steel plate, and the length of the horse stool reinforcement 133 is 20mm less than the thickness of the cover plate 13. The horse stool bar 133 hangs vertically so that the concrete falls.

Step 2.4. Place templates 132 on both sides of the frame with a groove-like structure, wherein the second steel plate 122 is embedded into the concrete cover 13 by studs, and seal the mold: paste the anti-leakage adhesive tape, the thickness of the concrete The edge square wooden bar is controlled, and the square wooden bar length is controlled at the thickness ± 5mm of cover plate 13, is drilled at the template 132 paired pull screw 134 holes, and is locked with the paired pull screw 134 after inserting the PVC pipe.

Step 2.5: Concrete pouring is performed after the form sealing construction is completed. Before pouring concrete, construction preparations are made, and the formwork 132 is fully wetted. For each wall panel, concrete is poured on both sides simultaneously to ensure pressure balance and avoid bulging to one side. Use fine stone concrete. When pouring concrete, the following vibrating methods are used: pendulum vibrating: use a hammer of a certain weight to repeatedly knock on the concrete surface, so that air bubbles are discharged inside the concrete and achieve the effect of vibrating; vibrating plate vibrating: use a vibrating plate to vibrate The concrete surface is vibrated to expel air bubbles inside the concrete.

Step 2.6, 48 hours after the concrete pouring is completed, remove the formwork. Remove the pull screw 134 and the template 132, and use pull bolts at the place where the pull screw 134 is placed to fasten the cover plates 13 and the first steel plate body 121 on both sides.

Example 2:

The installation method of the buckling-resistant steel plate shear wall in this embodiment includes the following steps:

A pre-embedded connection module 2 is set to be used as the installation support of the shear wall 1 .

The connection module 2 disclosed in this embodiment is divided into two parts, wherein the shear key 21 is made by welding steel strips and studs. On the ground beams of the first floor, concrete pouring is then performed on the ground beams and the ground.

The upper part of the connection module 2 is a frame 22 with inter-column support, in which the cross-sectional shape of the beam is "I" shape, the cross-section of the column is box-shaped, and the stable-frame-inter-column support structure is formed by welding the support inside the frame 22 , and the "I"-shaped beam has a large contact area with the ground, which is conducive to improving the stress stability and bearing capacity of the connecting module 2 .

The specific installation includes:

Lift the shear wall 1 from the support 131 through the lifting lug 14, and pay attention to the protection of the finished components of the shear wall 1 during the hoisting process to avoid collision with other components;

The hoisting process adopts advanced numerical control hoisting equipment, which can hoist the shear wall to the predetermined position, perform positioning, fixing and adjustment, and ensure the installation quality of the buckling-resistant steel plate shear wall components.

The lower part of the shear wall 1 is connected to the column of the connection module 2 by welding, and the shear wall 1 is temporarily fixed by the lug plate welded on the adjacent steel column to prevent the shear wall 1 from tilting outward;

The upper part of the shear wall 1 is connected to the upper steel beam by high-strength bolts;

The lower part of the shear wall 1 on the upper floor is connected to the steel beam of the floor through high-strength bolts, and the ear plate welded on the adjacent steel column of the floor temporarily fixes the shear wall 1 to prevent the buckling-resistant steel plate shear wall 1 from facing Outward tilt;

The upper part of the shear wall 1 on the upper floor is connected to the upper steel beam by high-strength bolts;

After the upper and lower sides of the shear wall 1 on this floor are connected with the main structure, the temporary fixing measures on the shear wall 1 are removed to complete the overall installation of the shear wall.

Example 3:

According to the method of GB/T50152-2012, the mechanical properties of the buckling-resistant steel plate shear wall fabricated according to the method of Example 1 were tested. Taking the traditional method (concrete cover slabs are prepared separately, and then installed on-site on the buckling-resistant steel plate shear wall steel structure module composed of steel plates and outer frames), the results are as follows: the buckling-resistant steel plate shear wall made by the method of the present invention Wall, when the thickness of the steel plate is within 5mm, the lateral rigidity can reach 500kN/mm, the anti-buckling steel plate shear wall made by the traditional method has a lateral rigidity of 400kN/mm, and the lateral rigidity is increased by 25%; it is manufactured by the method of the present invention The buckling-resistant steel plate shear wall bearing capacity can reach 3500kN, and the buckling-resistant steel plate shear wall produced by the traditional method has a bearing capacity of 3200kN, and the bearing capacity is increased by 9.4%.

In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary; it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature is "on" or "under" the second feature, which may be that the first and second features are in direct contact, or the first and second features pass through an intermediary indirect contact. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the level of the first feature is higher than that of the second feature . "Below", "below" and "under" the first feature may mean that the first feature is directly below or obliquely below the second feature, or it just means that the first feature is lower in level than the second feature.

In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" refers to the A particular feature, structure, material, or characteristic is described as included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to alterations, modifications, substitutions and variations.

Claims (10)

1. A manufacturing method of buckling-resistant steel plate shear wall, is characterized in that, at least comprises the following steps: The steel plate body (12) is placed in the outer frame assembly (11), so that the first surface of the outer frame assembly (11) and the steel plate body (12) forms a first groove, and the outer frame assembly ( 11) forming a second groove with the second surface of the steel plate body (12) opposite to the first surface; Templates (132) are respectively arranged on the first groove and the second groove; At the same time pour an equal amount of concrete into the first groove and the second groove after the formwork (132) is set, and form the cover plate (13) after the concrete is solidified; The formwork (132) is removed to obtain a buckling-resistant steel plate shear wall comprising the cover plate (13), the steel plate body (12) and the outer frame assembly (11). 2. The manufacturing method of buckling-resistant steel plate shear wall according to claim 1, characterized in that, before the template (132) is respectively arranged on the first groove and the second groove, further comprising: step: Place the outer frame assembly (11) with the steel plate body (12) on the bracket (131). 3. The method of making the buckling-resistant steel plate shear wall according to claim 1, characterized in that, setting the formwork (132) respectively on the first groove and the second groove is specifically: The template (132) is connected and fixed by a pull screw (134); A blocking member is provided at the connection between the template (132) and the outer frame assembly (11). 4. The buckling-resistant steel plate shear wall made by the method according to any one of claims 1-3, characterized in that, the buckling-resistant steel plate shear wall comprises the cover plate (13), the steel plate body (12) and the outer frame assembly (11); The outer frame assembly (11) is surrounded by several steel bars (111) in sequence, and an angle steel (112) is arranged inside the steel bar (111), and the angle steel (112) and the steel plate body (12) connected by high-strength bolts. 5. The buckling-resistant steel plate shear wall according to claim 4, characterized in that, the steel bar (111) is an I-beam; the steel bar (111) can be provided with lifting lugs (14). 6. The buckling-resistant steel plate shear wall according to claim 4, characterized in that, the steel plate body (12) comprises a first steel plate (121) and second steel plates arranged at both ends of the first steel plate (121) A piece (122), the second steel plate piece (122) can be provided with several pegs. 7. The buckling-resistant steel plate shear wall according to claim 6, characterized in that, several steel bars are hung between the studs, so that the steel bars are respectively formed in the first groove and the second groove network staggered structure. 8. The installation method of the buckling-resistant steel plate shear wall described in any one of claims 4-7, is characterized in that, by hoisting the lugs (14) on the shear wall (1), the shear wall (1) ) is connected with the connection module (2) arranged on the ground to complete the installation. 9. The installation method of the buckling-resistant steel plate shear wall according to claim 8, characterized in that, the connecting module (2) comprises a frame (22), and several shear keys are connected below the frame (22) (21), the shear key (21) is connected to the ground. 10. The method for installing a buckling-resistant steel plate shear wall according to claim 9, characterized in that, the frame (22) is surrounded by steel columns.