CN213897669U - Prefabricated built-in corrugated steel plate reinforced concrete combined shear wall - Google Patents
Prefabricated built-in corrugated steel plate reinforced concrete combined shear wall Download PDFInfo
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- CN213897669U CN213897669U CN202022700752.2U CN202022700752U CN213897669U CN 213897669 U CN213897669 U CN 213897669U CN 202022700752 U CN202022700752 U CN 202022700752U CN 213897669 U CN213897669 U CN 213897669U
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- 238000003466 welding Methods 0.000 claims abstract description 17
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Abstract
The utility model discloses a prefabricated built-in corrugated steel plate reinforced concrete combined shear wall, which comprises end columns and a shear wall between the end columns; the end column is a square steel pipe concrete end column and is formed by filling concrete in a steel pipe; the shear wall comprises corrugated steel plates, batten strips, concrete and horizontal butt-joint steel plates; the corrugated steel plate is made of low-yield-point high-ductility steel or high-strength high-ductility steel; the steel batten strip is welded on the side surface of the corrugated steel plate to form a steel skeleton of the shear wall; welding steel pipes on two sides of the steel skeleton of the shear wall to form the steel skeleton of the combined wall; and concrete is cast on the steel framework of the combined wall in situ to form the reinforced concrete combined wall with the built-in corrugated steel plates. The utility model provides a combination wall combines together built-in corrugated steel plate shear force wall lateral rigidity and the advantage that bearing efficiency is high and the good advantage of steel core concrete column anti-seismic performance to realized the assembly of structure, improved the assembly speed of component.
Description
Technical Field
The utility model relates to a building assembled structural design field especially relates to a built-in corrugated steel plate reinforced concrete composite shear wall of prefabricated formula.
Background
In earthquake active areas, medium and high-rise buildings usually adopt a concrete core tube as a main lateral force resisting system, because the lateral rigidity of a concrete wall body is higher and the manufacturing cost is lower. However, the disadvantage is that due to the large height-thickness ratio of the shear wall section, high strain is mainly concentrated at the bottom of the shear wall section during earthquake, and the concrete wall body has poor ductility, because the shear wall body is used as a side-resisting member and bears large axial force, which reduces the deformation capacity of the shear wall body, and the concrete in the shear wall body is broken and even seriously damaged. Therefore, in a binary system (i.e., a frame-shear wall structure) in which a shear wall is combined with a special bending moment frame, the shear wall tends to limit the deformability of the entire system. In order to improve the deformation capacity of the shear wall, a pin support wall is partially researched and designed, the deformation form of the main frame is controlled through a soft layer mechanism, and the damage to the main frame is prevented, however, compared with the common shear wall, the rigidity contribution of the pin support wall is very limited; partial research provides the concept of a slotted shear wall, the ductility of the concrete shear wall is improved by adopting vertical slotting, but the rigidity and the resistance of the shear wall are obviously reduced by adopting vertical slotting. To compensate for the significant decrease in shear wall stiffness and shear performance, the wall thickness must be increased, and the reinforcement ratio and concrete strength of the shear wall must be increased significantly, which unfortunately reduces the deformability of the wall sections.
Except for improving the performance of the shear wall, the existing shear wall structure needs to be installed on site in an actual construction area, so that the factory-like welding assembly in advance is inconvenient to realize, the efficiency of the assembly process is low, and the improvement of the construction speed and the quality are not facilitated.
Therefore, aiming at the defects in the past, a new prefabricated combined shear wall structure is urgently needed, has good bearing capacity and ductility, meets the requirements of vertical bearing and horizontal lateral resistance, can effectively reduce the wall thickness to improve the utilization rate of the building, and can improve the construction quality and the construction efficiency at the same time.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome the deficiencies in the prior art, the utility model provides a built-in corrugated steel plate reinforced concrete composite shear wall of prefabricated formula.
The utility model adopts the technical proposal that: a prefabricated built-in corrugated steel plate reinforced concrete combined shear wall comprises end columns and a shear wall between the end columns; the end column is a square steel pipe concrete end column and is formed by filling concrete in a steel pipe; the shear wall comprises corrugated steel plates, batten strips, concrete and horizontal butt-joint steel plates; the corrugated steel plate is made of low-yield-point high-ductility steel or high-strength high-ductility steel; the steel batten strip is welded on the side surface of the corrugated steel plate to form a steel skeleton of the shear wall; welding steel pipes on two sides of the steel skeleton of the shear wall to form the steel skeleton of the combined wall; concrete is poured on the steel framework of the combined wall in situ to form a built-in corrugated steel plate reinforced concrete combined wall component; horizontal butt joint steel plates are welded at the upper end part and the lower end part of the shear wall, the outer side surfaces of the horizontal butt joint steel plates are flush with the end parts of the corrugated steel plates, bolt holes are formed in the clear cross sections of the horizontal butt joint steel plates, and the horizontal butt joint steel plates are connected with the corrugated steel plates through triangular stiffening ribs for reinforcement.
The prefabricated built-in corrugated steel plate reinforced concrete shear wall members which are adjacent up and down are connected through connecting bolts, and the steel pipes which are adjacent up and down are welded on site.
Preferably, the corrugated steel plate is in an isosceles trapezoid shape, the thickness of the corrugated steel plate is 4-6 mm, the bending angle of the corrugated steel plate is 30-45 degrees, the wavelength of the corrugated steel plate is 50-100 mm, the welding seam defect and the brittle failure at the welding seam formed by sequentially welding and manufacturing the combined wall by a single component are avoided by adopting roll forming, the concrete grading poured inside the corrugated steel plate is of a second grade, and the maximum grain size of coarse aggregate is not more than 30 mm.
Preferably, the section of each steel batten strip is circular, the diameter of each steel batten strip is 6-8 mm, the distance between the batten strips is 100-200 mm, the steel batten strips are welded along the whole length of the corrugated steel plate during welding, the steel batten strips are welded on the side surfaces of the corrugated steel plate to form a steel skeleton of the shear wall, and the thickness of the concrete protective layer on the welding side of each steel batten strip is 30 mm.
Preferably, the thickness of the shear wall is 200 mm to 300 mm, the thickness of the horizontal butt-joint steel plate is 6 mm to 8 mm, the triangular stiffening rib is in the shape of an isosceles right triangle, and two right-angle sides are respectively welded with the corrugated steel plate and the horizontal butt-joint steel plate.
Preferably, the width and the thickness of the square concrete-filled steel tube end column are 210 mm to 310 mm, the thickness of the steel tube is 4 mm to 10 mm, and the square concrete-filled steel tube end column is connected and assembled with a steel framework of the shear wall through welding.
The construction process of the prefabricated built-in corrugated steel plate reinforced concrete combined shear wall comprises the following steps:
the method comprises the following steps: prefabricating steel skeleton members of the combined wall in a factory, and reserving steel plates with the length of 100 mm at the lower end parts of the shear walls of the combined wall for on-site splicing;
step two: when in on-site assembly, firstly, connecting bolts are used for fixing an upper shear wall component and a lower shear wall component which are the same through bolt holes on horizontally butted steel plates at the upper end and the lower end of the shear wall;
step three: connecting the upper corrugated steel plate, the lower corrugated steel plate and the steel pipe into a whole in a welding mode;
step four: and finally, pouring the connecting nodes and the filling steel pipes in situ by using concrete with a strength grade higher than that of the combined wall member.
The utility model has the advantages that:
1. the utility model discloses built-in corrugated steel plate is a geometric cross-section and is corrugated steel plate, compares its off-plate rigidity with flat steel sheet and will be much more than, has very high off-plate buckling strength. Therefore, the corrugated steel plate in the actual engineering is smaller in thickness, the wall thickness can be effectively reduced to improve the utilization rate of the building, the working procedures and the manufacturing cost are reduced, and the economical efficiency is better. The utility model discloses built-in corrugated steel plate can form regional restraint concrete, and corrugated steel plate has increased the bending resistance moment of inertia of steel sheet along the pipe length direction bearing shape, makes it have higher bearing capacity and stability to reduce the seismic hazard of shear force wall buckling, plane outer unstability.
2. The steel batten strip arranged in the utility model can effectively increase the mechanical engaging force between the corrugated steel plate and the concrete, further restrain the deformation of the concrete and improve the bearing capacity of the component; the steel lacing bar can increase the later rigidity of the member, improve the degradation effect of the rigidity of the member and enable the test piece to have better anti-seismic energy dissipation characteristic and ductility; the steel batten strip is welded on the side surface of the corrugated steel plate to form a steel skeleton of the shear wall, the steel skeleton can be used as a concrete template, temporary support does not need to be added, and the construction speed and the construction cost are high.
3. The square concrete-filled steel tube column can provide effective additional restraint for the waveform part in the shear wall by reasonably increasing the wall thickness of the steel tube, and greatly improves the performance of resisting the horizontal load in the surface of the combined wall; the buckling process of the corrugated steel plate and the rigidity degradation process of the composite wall structure are effectively delayed; the energy consumption capability of the plastic hinge area and the bearing capacity and ductility of the combined wall member are improved, so that the anti-seismic performance of the combined wall structure is improved.
4. The combined wall provided by the utility model combines the advantages of high lateral rigidity and bearing efficiency of the built-in corrugated steel plate shear wall with the advantages of good anti-seismic performance of the steel pipe concrete column, and simultaneously, the combined wall provided by the utility model is a prefabricated component, and the horizontal butt joint steel plate and the corrugated steel plate are arranged, so that the components of the combined wall are convenient to butt joint and simple and easy to connect; the post-cast strip and the welding space are reserved while the installation is convenient, the integrity of the component is well considered, and the industrial production and the assembly construction can be perfectly realized.
Drawings
FIG. 1 is a schematic view of a steel skeleton of a prefabricated built-in corrugated steel plate concrete shear wall
FIG. 2 is a schematic view of a prefabricated built-in corrugated steel plate concrete composite shear wall
FIG. 3 is a plan view of a prefabricated built-in corrugated steel plate concrete composite shear wall
FIG. 4 is a schematic view of the bolt connection of prefabricated built-in corrugated steel plate concrete shear wall members
Description of reference numerals: 1-corrugated steel plate, 2-steel batten strip, 3-horizontal butt joint steel plate, 4-bolt hole, 5-triangular stiffening rib, 6-concrete, 7-steel pipe, 8-bending angle, 9-wavelength and 10-connecting bolt.
Detailed Description
For a better understanding of the invention, it will be further explained below by means of examples and figures:
referring to fig. 1 to 4, a prefabricated built-in corrugated steel plate reinforced concrete composite shear wall member includes: corrugated steel plate 1, batten strip 2, concrete 6 and steel pipe 7.
The corrugated steel plate 1 is made of low-yield-point high-ductility steel or high-strength high-ductility steel and is formed by rolling a common flat steel plate through specific equipment; the section of each steel batten strip 2 is circular, the diameter of each steel batten strip can be 6-12 mm, the distance between each batten strip is 100-200 mm, each steel batten strip 2 is welded on the side surface of each corrugated steel plate 1 to form a steel framework of the shear wall, the steel battens are welded along the whole length of each corrugated steel plate 1 during welding, and steel pipes 7 are welded on two sides of the steel framework of the shear wall to form the steel framework of the combined wall; the upper end and the lower end of the shear wall are welded with horizontal butt-joint steel plates 3 with bolt holes 4 and additionally provided with triangular stiffening ribs 5; and pouring concrete 6 on the steel framework of the combined wall to form the reinforced concrete combined wall with the built-in corrugated steel plates.
The prefabricated built-in corrugated steel plate reinforced concrete shear wall members which are adjacent up and down are connected through connecting bolts 10, and the steel pipes 7 which are adjacent up and down can be welded on site.
In this embodiment, the wall length is 1800 millimeters, the shear wall thickness is 300 millimeters, the width and the thickness of square steel pipe concrete end post are 310 millimeters, and the thickness of steel pipe 7 is 8 millimeters. The ratio of the length l of the wall body to the wall thickness b is between 4 and 6, the waveform of the corrugated steel plate arranged in the wall body is isosceles trapezoid, the maximum bending angle 8 of the corrugated steel plate is 45 degrees, and the wavelength 9 of the corrugated steel plate is 50 millimeters to 100 millimeters. The concrete 6 grade poured in the corrugated steel plate 1 is a second grade, and the maximum grain size of the coarse aggregate is not more than 30 mm. The horizontal butt joint steel plate 3 is welded at the upper end part and the lower end part of the corrugated steel plate 1, a bolt hole 4 is formed in the clear section of the horizontal butt joint steel plate, the outer side surface of the horizontal butt joint steel plate is flush with the end part of the corrugated steel plate, and a triangular stiffening rib 5 is additionally arranged between the horizontal butt joint steel plate 3 and the corrugated steel plate 1. The shape of the triangular stiffening rib 5 is an isosceles right triangle, and two right-angle sides are respectively welded with the corrugated steel plate 1 and the horizontal butt-joint steel plate 3. When concrete 6 is poured in the site, the thickness of the concrete protective layer at the welding side of the batten strip is ensured to be 30 mm. Meanwhile, steel plates with the length of 100 mm are reserved at the upper end and the lower end of the shear wall component for on-site splicing. The length and thickness of the right angle of the triangular stiffening rib and the diameter of the high-strength bolt are determined according to the stress and need to meet the requirements of corresponding specifications; the distance between the bolt holes is determined according to the specification, and the hole diameter is determined according to the actual engineering condition and the corresponding specification.
The utility model provides a construction method of prefabricated formula built-in corrugated steel plate reinforced concrete composite shear wall component specifically includes following steps:
the method comprises the following steps: prefabricating steel skeleton members of the combined wall in a factory, and reserving steel plates with the length of 100 mm at the lower end part of the shear wall for on-site splicing;
step two: when in on-site assembly, firstly, connecting bolts 10 are used for fixing an upper shear wall component and a lower shear wall component which are the same through bolt holes 4 on horizontally butted steel plates at the upper end and the lower end of the shear wall;
step three: then the upper corrugated steel plate 1 and the lower corrugated steel plate 7 are connected into a whole in a welding mode;
step four: and finally, casting the connecting node and filling the steel pipe 7 in situ by using concrete 6 with one strength grade higher than that of the combined shear wall member.
To sum up, the utility model provides a prefabricated formula combination shear wall component will embed corrugated steel plate shear force wall lateral rigidity and bear the advantage that efficient and steel core concrete column anti-seismic performance is good and combine together to realized the assembly of structure, improved the assembly speed of component. The utility model provides a combination wall accords with the development trend of present stage world each country residential structure high performance, assembly ization, is particularly suitable for being applied to among the many high-rise steel construction residential building of assembled.
The details of the present invention are well known to those skilled in the art.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. The utility model provides a built-in corrugated steel board reinforced concrete composite shear wall of prefabricated formula which characterized in that: comprising end posts and shear walls between the end posts; the end column is a square steel pipe concrete end column and is formed by filling concrete in a steel pipe; the shear wall comprises corrugated steel plates, batten strips, concrete and horizontal butt-joint steel plates; the corrugated steel plate is made of low-yield-point high-ductility steel or high-strength high-ductility steel; the steel batten strip is welded on the side surface of the corrugated steel plate to form a steel skeleton of the shear wall; welding steel pipes on two sides of the steel skeleton of the shear wall to form the steel skeleton of the combined wall; concrete is poured on the steel framework of the combined wall in situ to form a built-in corrugated steel plate reinforced concrete combined wall component; horizontal butt-joint steel plates are welded at the upper end part and the lower end part of the shear wall, the outer side surfaces of the horizontal butt-joint steel plates are flush with the end parts of the corrugated steel plates, bolt holes are formed in the clear sections of the horizontal butt-joint steel plates, and the connection between the horizontal butt-joint steel plates and the corrugated steel plates is reinforced through triangular stiffening ribs;
the prefabricated built-in corrugated steel plate reinforced concrete shear wall members which are adjacent up and down are connected through connecting bolts, and the steel pipes which are adjacent up and down are welded on site.
2. The prefabricated built-in corrugated steel plate reinforced concrete composite shear wall according to claim 1, wherein: the corrugated steel plate is in an isosceles trapezoid shape, the thickness of the corrugated steel plate is 4-6 mm, the bending angle of the corrugated steel plate is 30-45 degrees, the wavelength of the corrugated steel plate is 50-100 mm, the concrete cast inside the corrugated steel plate is graded into a second grade, and the maximum grain size of coarse aggregate is not more than 30 mm.
3. The prefabricated built-in corrugated steel plate reinforced concrete composite shear wall according to claim 1, wherein: the section of each steel lacing bar is circular, the diameter of each steel lacing bar is 6-12 mm, the distance between the lacing bars is 100-200 mm, and the thickness of the concrete protective layer on the welding side of each steel lacing bar is 30 mm.
4. The prefabricated built-in corrugated steel plate reinforced concrete composite shear wall according to claim 1, wherein: the thickness of the shear wall is 200-300 mm, the thickness of the horizontal butt-joint steel plate is 6-8 mm, the triangular stiffening rib is in the shape of an isosceles right triangle, and two right-angle sides are respectively welded with the corrugated steel plate and the horizontal butt-joint steel plate.
5. The prefabricated built-in corrugated steel plate reinforced concrete composite shear wall according to claim 1, wherein: the width and the thickness of the square concrete-filled steel tube end column are 210 mm to 310 mm, the thickness of the steel tube is 4 mm to 10 mm, and the square concrete-filled steel tube end column is connected and assembled with a steel framework of the shear wall through welding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022700752.2U CN213897669U (en) | 2020-11-20 | 2020-11-20 | Prefabricated built-in corrugated steel plate reinforced concrete combined shear wall |
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| CN202022700752.2U CN213897669U (en) | 2020-11-20 | 2020-11-20 | Prefabricated built-in corrugated steel plate reinforced concrete combined shear wall |
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