An assembled stiffening wall and construction technology

Abstract

The present invention provides a novel prefabricated stiffened wall and a construction process. The novel prefabricated stiffened wall and the construction process include two concrete-filled steel tubes, steel beams, steel plates, fish plates, bolts, stiffening plates, steel bar meshes and concrete. The concrete-filled steel tubes are stiffened wall end columns, and the fish plates are arranged on the sides of the concrete-filled steel tubes. The steel plates are fixedly connected with the fish plates through bolts. The steel beams are welded on the steel plates. The novel prefabricated stiffened wall and the construction process use steel plates arranged between the concrete-filled steel tubes to enhance the lateral stiffness of the entire wall. At the same time, the reinforced concrete walls wrapped on both sides of the steel plates can also serve as the lateral supports for the steel plates to delay the lateral buckling deformation of the steel plates. The simultaneously arranged reinforced concrete can not only bear the vertical load but also strengthen the connection between the steel tubes to form the entire compression + shear structural member. It also improves the fire resistance and anti-corrosion performance of the entire shear wall.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and specifically to a new type of prefabricated stiffened wall and construction technology. Background Art

[0002] The steel structure building structural members have high strength and small cross-sectional area. Compared with concrete structures, the usable area can be increased by about 5-10%. In addition, the components are prefabricated in the factory with high precision, the construction is not restricted by seasons, the construction period is short, and the investment can be recovered quickly. While traditional concrete buildings consume a large amount of natural resources (sand, gravel, water), cause serious environmental pollution, and with the continuous increase of labor costs, steel structure buildings have become the main development direction of residential buildings in China.

[0003] In the current development process of steel structure buildings, there are still various factors restricting their rapid development and application. First, the structural design technology is not mature. The high steel consumption in the structure leads to a non-competitive price, and the unreasonable component layout leads to poor aesthetics. Second, the supporting of each specialty of the building is not precise and the integration degree is low, resulting in problems such as poor quality or practicability during use. In recent years, although many scholars and designers have explored and studied the above problems to a certain extent, there are still few mature steel structure building products, which always have certain defects and need to be continuously improved and upgraded. The social impact brought by failed products has, to a certain extent, hindered the development of steel structure buildings. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a new type of prefabricated stiffened wall composed of a steel plate-concrete hybrid combination and a construction technology.

[0006] (II) Technical Solutions

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A new type of prefabricated stiffened wall and construction technology, including two concrete-filled steel tubes, steel beams, steel plates, fish plates, bolts, stiffening plates, steel bar meshes, and concrete. The concrete-filled steel tubes are the end columns of the stiffened wall, and the fish plates are arranged on the sides of the concrete-filled steel tubes. The steel plates are fixedly connected to the fish plates through bolts. The steel beams are welded on the steel plates. The steel plates are provided with holes, and the stiffening plates are arranged in the holes. The front and rear ends of the stiffening plates extend out of the steel plates from the front and back sides of the steel plates respectively. The steel bar meshes are arranged between the two concrete-filled steel tubes. The concrete is coated on the steel bar meshes.

[0008] Preferably, the stiffening plates can be made of other steel members such as channel steel, angle steel, and steel plates.

[0009] Preferably, a plurality of circular through - holes and square holes are respectively formed in the steel plate. It further includes a plurality of plugging components. The plurality of plugging components are arranged in the plurality of circular through - holes.

[0010] Preferably, it further includes a second clamping ring with bumps on the inner side and two first clamping rings. The two first clamping rings and the second clamping ring are arranged at equal intervals in sequence in the circular through - hole. The plugging component includes a first clamping plate and two second clamping plates. The first clamping plate and the two second clamping plates are coaxially connected. A circular steel plate is provided on the front surface of the first clamping plate. A plurality of openings are formed on the edges of the second clamping plates and the first clamping plate. The positions of the openings on the first clamping plate are staggered from the positions of the openings on the second clamping plates. The positions of the bumps on the first clamping ring are staggered from the positions of the bumps on the second clamping ring. The plugging component is detachably clamped to the second clamping ring and the first clamping ring through the openings. It further includes a heat - conducting component corresponding to the circular through - holes and the square holes.

[0011] Preferably, the heat - conducting component includes a water inlet, a water outlet, a conducting pipe, a plurality of annular metal pipes and a square metal pipe. The conducting pipe is arranged on the steel plate, and the plurality of annular metal pipes and the square metal pipe are all communicated with the conducting pipe through pipelines. The annular metal pipes and the square metal pipe respectively correspond to the circular through - holes and the square holes. One ends of the water inlet and the water outlet are respectively arranged at the highest point and the lowest point of the conducting pipe. The other ends of the water inlet and the water outlet respectively pass through the steel mesh, the concrete and extend outside the concrete. A plurality of metal joints are arranged on the front surfaces of the annular metal pipes and the square metal pipe. One end of the metal joint far away from the annular metal pipe extends between the steel mesh and the concrete.

[0012] Preferably, a temperature - sensitive color - changing coating is applied on the concrete.

[0013] Preferably, the positions of the pipelines where the plurality of square metal pipes and annular metal pipes communicate with the steel plate are at the lowest points of the square metal pipes and the annular metal pipes.

[0014] A construction technology for a new type of prefabricated stiffened wall, which includes the following steps:

[0015] Step 1: First, in the factory, components including steel - pipe concrete columns, steel beams, steel plates, fish - tail plates, bolts, stiffening plates, steel meshes, etc. are fixedly assembled.

[0016] Step 2: At the same time, the prefabricated stiffened components assembled in the factory are taken as a hoisting unit according to the height of two structural layers and then transported out of the factory as a whole.

[0017] Step 3: Then, after transporting a plurality of hoisting units to the site, they are hoisted into place as a whole.

[0018] Step 4: Then, after the structural steel beams and floor slabs are connected to the hoisted stiffened unit in place, the wall formwork is closed.

[0019] Step Five: Finally, pour the concrete for the wall, floor slab, and the interior of the concrete-filled steel tubular columns.

[0020] (III) Advantageous Effects

[0021] The present invention provides a new type of prefabricated stiffening wall and construction technology, which has the following advantageous effects:

[0022] 1. For this new type of prefabricated stiffening wall and construction technology, steel plates are arranged between the concrete-filled steel tubular columns to enhance the lateral stiffness of the entire wall. At the same time, the reinforced concrete walls wrapped on both sides of the steel plates can also serve as the lateral supports for the steel plates to delay the lateral buckling deformation of the steel plates. The reinforced concrete provided can not only bear the vertical load but also strengthen the connection between the steel tubular columns, forming an entire compression + shear structural member. It also improves the fire resistance and anti-corrosion performance of the entire shear wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the first three-dimensional view of the present invention;

[0024] Figure 2 is the front view of the present invention;

[0025] Figure 3 is the first top cross-sectional view of the present invention;

[0026] Figure 4 is the front cross-sectional view of the present invention;

[0027] Figure 5 is the internal schematic diagram of the present invention;

[0028] Figure 6 is the second three-dimensional view of the present invention;

[0029] Figure 7 is the first three-dimensional view of the local components of the present invention;

[0030] Figure 8 is the second three-dimensional view of the local components of the present invention;

[0031] Figure 9 is the top cross-sectional view of the wall column foot of the present invention;

[0032] Figure 10 is the installation schematic diagram of the wall column foot of the present invention;

[0033] Figure 11 is the second top cross-sectional view of the present invention.

[0034] In the figure: 1 concrete-filled steel tube column, 2 steel beam, 3 steel plate, 4 fishplate, 5 bolt, 6 stiffening plate, 7 steel bar mesh, 8 concrete, 9 connecting bar plate, 10 floor slab, 11 lower prefabricated unit, 12 upper prefabricated unit, 13 ear plate, 14 grouting hole, 15 steel bar passing hole, 16 stiffening plate, 17 connecting plate, 18 temperature-sensitive color-changing coating, 19 water outlet, 20 water inlet, 21 annular metal pipe, 22 square metal pipe, 23 circular steel plate, 24 sealing component, 25 conducting pipe, 26 square hole, 27 metal joint, 28 heat conduction component, 29 first clamping plate, 30 second clamping plate, 31 opening, 32 first clamping ring, 33 second clamping ring, 34 steel bar rib. Detailed implementation manner

[0035] An embodiment of the present invention provides a novel prefabricated stiffened wall and a construction process. As Figures 1-11 shown, Embodiment 1: It includes two concrete-filled steel tube columns 1, steel beams 2, steel plates 3, fishplates 4, bolts 5, stiffening plates 6, steel bar meshes 7 and concrete 8. The concrete-filled steel tube column 1 is a stiffened wall end column, and the fishplate 4 is arranged on the side of the concrete-filled steel tube column 1. The steel plate 3 is fixedly connected with the fishplate 4 through bolts 5. The steel beam 2 is welded on the steel plate 3. A hole is opened on the steel plate 3, and the stiffening plate 6 is arranged in the hole. The front and rear ends of the stiffening plate 6 respectively extend from the front and rear sides of the steel plate 3 to the outside of the steel plate 3. The steel bar mesh 7 is arranged between the two concrete-filled steel tube columns 1. The concrete 8 is coated on the steel bar mesh 7.

[0036] The present invention can form different structural systems with steel columns, concrete-filled steel tube columns 1, steel beams 2 and supporting floor slabs 10.

[0037] The overall stiffness of the present invention is large. It can make full use of the compressive and shear resistance of the concrete wall, and can use the lateral stiffness of the reinforced concrete slab to prevent the buckling of the embedded thin steel plate, give play to the shear resistance performance of the thin steel plate, save steel, reduce the cross-section of the vertical member, and have a high usable floor area rate.

[0038] The present invention can well match the thickness of the infill wall, so that there is no exposed wall in the indoor space, the layout is relatively flexible, and the use comfort is the same as that of the concrete structure.

[0039] One structure of the present invention can be used as a standard unit, and can be combined into required cross-sectional forms such as straight shape, L shape, cross shape, T shape or Z shape according to building requirements. At the same time, it can be installed integrally, avoiding on-site vertical splicing welds, reducing on-site welding amount and welding residual deformation, and reducing on-site construction difficulty; according to different construction conditions, the concrete part can be either prefabricated or cast-in-place, increasing the construction flexibility.

[0040] It preferably solves the processing and installation problems of the steel plate shear wall, lays a foundation for the application in high-rise steel structure buildings, and has broad application prospects in prefabricated steel structure buildings.

[0041] The stiffening plate 6 can be made of channel steel, angle steel, steel plates or other steel components.

[0042] A plurality of circular through holes and square holes 26 are respectively formed in the steel plate 3. It further includes a plurality of plugging components 24. The plurality of plugging components 24 are arranged in the plurality of circular through holes.

[0043] It further includes a second clamping ring 33 with bumps on the inner side and two first clamping rings 32. The two first clamping rings 32 and the second clamping ring 33 are arranged at equal intervals in sequence in the circular through hole. The plugging component 24 includes a first clamping plate 29 and two second clamping plates 30. The first clamping plate 29 and the two second clamping plates 30 are coaxially connected. A circular steel plate 23 is provided on the front surface of the first clamping plate 29. A plurality of openings 31 are formed on the edges of the second clamping plate 30 and the first clamping plate 29. The positions of the openings 31 on the first clamping plate 29 are staggered from the positions of the openings 31 on the second clamping plate 30. The positions of the bumps on the first clamping ring 32 are staggered from the positions of the bumps on the second clamping ring 33. The plugging component 24 is detachably clamped to the second clamping ring 33 and the first clamping ring 32 through the openings 31. It further includes a heat conduction component 28 corresponding to the circular through hole and the square hole 26.

[0044] When a person needs to block the circular through hole on the steel plate 3, the plugging component 24 that meets the size of the circular through hole can be inserted into it. The outermost second clamping plate 30 on the plugging component 24 respectively passes through the outermost first clamping ring 32 and the first clamping ring 32 located at the center of the circular through hole and corresponds to the inner side of the second clamping ring 33. At this time, the second clamping plate 30 located at the center of the plugging component 24 is arranged between the outermost first clamping ring 32 and the first clamping ring 32 located at the center of the circular through hole. Since the positions of the bumps on the second clamping ring 33 are different from those on the first clamping ring 32, in this way, the outermost second clamping plate 30 on the plugging component 24 has to rotate to adjust its position. Finally, the outermost second clamping plate 30 is buckled with the second clamping ring 33, while the second clamping plate 30 located at the center of the plugging component 24 is staggered from the positions of the bumps on both the outermost first clamping ring 32 and the first clamping ring 32 located at the center of the circular through hole, thus playing a role in blocking the circular through hole.

[0045] Through the cooperation of the second clamping ring 33 with bumps on the inner side, the two first clamping rings 3 and the plugging component 24, using the tenon and mortise structure in China, the traditional bolt fixation is abandoned. Because although bolt fixation is strong and simple enough, the volume of the bolt is small, so the tooth patterns on it are easily corroded by time or other external reasons, and the thread is damaged. Then it will inevitably affect its fixation effect. Once it is subjected to vibration or shaking itself, it will cause detachment or be unable to play a fixing and supporting role.

[0046] The heat-conducting component 28 includes a water inlet 20, a water outlet 19, a conducting pipe 25, a plurality of annular metal pipes 21 and a square metal pipe 22. The conducting pipe 25 is arranged on the steel plate 3, and the plurality of annular metal pipes 21 and the square metal pipe 22 are all communicated with the conducting pipe 25 through pipelines. The annular metal pipes 21 and the square metal pipe 22 respectively correspond to circular through holes and square holes 26. One ends of the water inlet 20 and the water outlet 19 are respectively arranged at the highest point and the lowest point of the conducting pipe 25. The other ends of the water inlet 20 and the water outlet 19 respectively pass through the steel bar mesh 7 and the concrete 8 and extend outside the concrete 8. A plurality of metal joints 27 are arranged on the front surfaces of the annular metal pipes 21 and the square metal pipe 22. One end of the metal joint 27 far away from the annular metal pipe 21 extends between the steel bar mesh 7 and the concrete 8.

[0047] A temperature-sensitive color-changing coating 18 is applied on the concrete 8.

[0048] By the cooperation of the arranged water inlet 20, water outlet 19, conducting pipe 25, temperature-sensitive color-changing coating 18, a plurality of annular metal pipes 21 and square metal pipe 22, compared with the traditional hole-drilling method, it is necessary to determine the hole-drilling position without affecting the function of the shear wall, and then use hole-drilling devices such as electric saws to break the reinforced concrete and the originally intact steel plate 3, which greatly wastes the working time of personnel.

[0049] After obtaining the permission of the relevant department, several openings can be preset in the shear wall of the present invention. After the shear wall is completely built, when personnel need to drill holes, unlike the traditional hole-drilling method, it is not necessary to completely break both the steel plate 3 and the reinforced concrete with devices such as electric saws. Only the reinforced concrete corresponding to the opening needs to be broken. At the same time, the present invention can pour hot water from the water inlet 20, so that heat conduction starts in both the annular metal pipes 21 and the square metal pipe 22. By the operation of applying the temperature-sensitive color-changing coating 18 on the concrete 8, different-colored shape traces will appear at the corresponding positions on its wall surface, which is convenient for personnel to quickly find the positions where holes can be drilled and further facilitates the use of personnel.

[0050] The pipeline positions where the plurality of square metal pipes 22 and annular metal pipes 21 communicate with the steel plate 3 are located at the lowest points of the square metal pipes 22 and the annular metal pipes 21.

[0051] A on-site casting process for a new type of prefabricated stiffened wall includes the following steps:

[0052] Step 1: First, fix and assemble components such as steel pipe concrete columns 1, steel beams 2, steel plates 3, fishplate plates 4, bolts 5, stiffening plates 6, and steel bar meshes 7 in the factory.

[0053] Its specific assembly includes: After each sub-component is processed and formed according to the deepened lofting drawing, they are assembled. The bolt holes of the steel plate 3 are formed by mechanical punching, and the stiffening plate 6 and the steel plate 3 are connected by double-sided fillet welds to form an integral body; the fish-tail plate 4 is welded to the side of the concrete-filled steel tube column 1, and the steel beam 2 and the concrete-filled steel tube column 1 are connected by bolt welding to form a whole; finally, the stiffening plate 6 and the fish-tail plate 4 on the side of the concrete-filled steel tube column 1 are connected by bolts, and the stiffening plate 6 and the steel beam 2 are connected by double-sided fillet welds to form a shape. That is, the assembly of the factory stiffening wall is completed.

[0054] For ultra-wide and ultra-long components, the above assembly process is completed on the construction site ground.

[0055] Step 2: At the same time, the factory-assembled stiffening precast components are taken as a hoisting unit according to the height of two structural layers and then transported out of the factory as a whole.

[0056] Step 3: Then, after transporting multiple hoisting units to the site, hoist them into place as a whole.

[0057] Step 4: Then, after the structural steel beam 2 and the floor slab 10 are connected to the hoisting stiffening unit in place, formwork for the wall is installed.

[0058] Step 5: Finally, pour the concrete for the wall, the concrete for the floor slab 10, and the concrete inside the concrete-filled steel tube column 1.

[0059] At the same time, the wall formwork adopts detachable steel formwork or aluminum formwork to improve the turnover and utilization rate.

[0060] Example 2: It also includes the factory prefabrication process of the new type of assembled stiffening wall:

[0061] For walls with width and length dimensions within the allowable range of road transportation dimensions, they are prefabricated and transported out of the factory as a whole. The length of the prefabricated standard unit is combined with the lifting performance of the on-site hoisting machinery and is transported out of the factory with a height of one to two structural layers.

[0062] The steel skeleton part of the stiffening wall is assembled into an integral body by the above factory assembly process. The left and right ends of the steel bar mesh 7 are bent and welded to the concrete-filled steel tube column 1, and the upper and lower end steel bars are bent and welded to the steel beam 2. Pour the concrete on one side of the wall, turn it over, and then pour the concrete on the other side to form a prefabricated wall. Transport it out of the factory as a whole.

[0063] The steel skeleton part of the prefabricated wall is assembled and formed on the factory or on-site ground. The processing quality of the components is high, and the forming quality of the component welds is high. At the same time, it reduces the on-site high-altitude operation, reduces the high-altitude welding volume, reduces the construction safety risk, and reduces the on-site construction difficulty.

[0064] The steel plates 3 are mainly connected by bolts, reducing the welding volume and weld deformation, and the factory assembly efficiency is high.

[0065] The lower precast unit 11 and the upper precast unit 12 are temporarily fixed by the temporary docking ear plates 13 on one side of the concrete-filled steel tube column 1. After the wall elevation and positioning are adjusted, the upper and lower steel columns are welded with full penetration first-class welds; the steel plates 3 between the upper and lower walls are connected by the connecting plates 17 and bolts 5; the steel plates 3 are provided with grouting holes; the left and right ends of the steel bar mesh 7 are bent and welded to the steel tube column 1, and the upper and lower end steel bars are welded to the connecting bar plates 9; the internal concrete is poured by sealing the detachable steel formwork or aluminum formwork at the on-site docking section.

[0066] The lower precast unit 11 is provided with an on-site casting section at the floor. The casting section steel plate is reserved with grouting holes 14 and steel bar passing holes 15. The steel bar truss bottom formwork and the stiffening plate 16 are connected by fillet welds. The floor slab concrete and the on-site casting section concrete are cast integrally.

[0067] As Figure 9 shown, it is also provided with steel bar ribs 34 for reinforcement.

[0068] To sum up, for the new type of assembled stiffened wall and construction technology, the steel plates 3 are arranged between the concrete-filled steel tube columns 1 to enhance the lateral stiffness of the whole wall. At the same time, the reinforced concrete walls wrapped on both sides of the steel plates 3 can also serve as the lateral supports for the steel plates 3 to delay the lateral buckling deformation of the steel plates 3. The reinforced concrete provided can not only bear the vertical load, but also strengthen the connection between the steel tube columns, forming the whole compression + shear structural member. It also improves the fire resistance and anti-corrosion performance of the whole shear wall.

Claims

1. A prefabricated stiffening wall, characterized in that: It includes two concrete-filled steel tubes (1), steel beams (2), steel plates (3), fish plates (4), bolts (5), stiffening plates (6), steel bar meshes (7) and concrete (8). The concrete-filled steel tubes (1) are stiffened wall end columns. The fish plates (4) are arranged on the sides of the concrete-filled steel tubes (1). The steel plates (3) are fixedly connected to the fish plates (4) through bolts (5). The steel beams (2) are welded on the steel plates (3). The steel plates (3) are provided with holes. The stiffening plates (6) are arranged in the holes. The front and rear ends of the stiffening plates (6) respectively extend out of the steel plates (3) from the front and back sides of the steel plates (3). The steel bar meshes (7) are arranged between the two concrete-filled steel tubes (1). The concrete (8) covers the steel bar meshes (7); The stiffening plates (6) are members made of channel steels, angle steels and steel plates; A plurality of circular through holes and square holes (26) are respectively formed in the steel plates (3), and further include a plurality of plugging components (24). The plurality of plugging components (24) are arranged in the plurality of circular through holes; It further includes a second clamping ring (33) with bumps on the inner side and two first clamping rings (32). The two first clamping rings (32) and the second clamping ring (33) are sequentially arranged at equal intervals in the circular through holes. The plugging component (24) includes a first clamping plate (29) and two second clamping plates (30). The first clamping plate (29) and the two second clamping plates (30) are coaxially connected. A circular steel plate (23) is arranged on the front surface of the first clamping plate (29). A plurality of openings (31) are formed on the edges of the second clamping plates (30) and the first clamping plate (29). The positions of the openings (31) on the first clamping plate (29) are staggered from the positions of the openings (31) on the second clamping plates (30). The positions of the bumps on the first clamping rings (32) are staggered from the positions of the bumps on the second clamping ring (33). The plugging component (24) is detachably clamped to the second clamping ring (33) and the first clamping rings (32) through the openings (31). It further includes a heat conduction component (28) corresponding to the circular through holes and the square holes (26); The heat conduction component (28) includes a water inlet (20), a water outlet (19), a conduction pipe (25), a plurality of annular metal pipes (21) and a square metal pipe (22). The conduction pipe (25) is arranged on the steel plate (3). The plurality of annular metal pipes (21) and the square metal pipe (22) are all communicated with the conduction pipe (25) through pipelines. The annular metal pipes (21) and the square metal pipe (22) respectively correspond to circular through holes and square holes (26). One ends of the water inlet (20) and the water outlet (19) are respectively arranged at the highest point and the lowest point of the conduction pipe (25). The other ends of the water inlet (20) and the water outlet (19) respectively pass through the steel mesh (7) and the concrete (8) and extend outside the concrete (8). A plurality of metal joints (27) are arranged on the front surfaces of the annular metal pipes (21) and the square metal pipe (22). One end of the metal joint (27) far away from the annular metal pipe (21) extends between the steel mesh (7) and the concrete (8); A temperature-sensitive color-changing coating (18) is applied on the concrete (8).

2. The prefabricated stiffening wall according to claim 1, characterized in that: The pipeline positions where the plurality of square metal pipes (22) and the annular metal pipes (21) are communicated with the steel plate (3) are located at the lowest points of the square metal pipes (22) and the annular metal pipes (21).

3. The construction process of an assembled stiffening wall according to claim 1, characterized in that: It includes the following steps: Step 1: First, fixedly assemble the concrete-filled steel tube column (1), the steel beam (2), the steel plate (3), the fishplate (4), the bolt (5), the stiffening plate (6), and the steel mesh (7) in the factory; Step 2: At the same time, the factory-assembled stiffened prefabricated components are taken as a hoisting unit according to the height of two structural layers and then transported out of the factory as a whole; Step 3: Then, after transporting a plurality of hoisting units to the site, hoist them into place as a whole; Step 4: Then, after the structural steel beam (2) and the floor slab (10) are connected to the hoisting stiffened unit in place, formwork the wall; Step 5: Finally, pour the wall concrete, the floor slab (10) concrete and the concrete inside the concrete-filled steel tube column (1).

Images