CN115928915A - Multilayer steel tube concrete edge constraint superposed shear wall and preparation method thereof - Google Patents
Multilayer steel tube concrete edge constraint superposed shear wall and preparation method thereof Download PDFInfo
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- CN115928915A CN115928915A CN202211664161.1A CN202211664161A CN115928915A CN 115928915 A CN115928915 A CN 115928915A CN 202211664161 A CN202211664161 A CN 202211664161A CN 115928915 A CN115928915 A CN 115928915A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 186
- 239000010959 steel Substances 0.000 title claims abstract description 186
- 239000004567 concrete Substances 0.000 title claims abstract description 93
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 239000011229 interlayer Substances 0.000 claims description 73
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 63
- 239000010410 layer Substances 0.000 claims description 51
- 230000003014 reinforcing effect Effects 0.000 claims description 31
- 238000003466 welding Methods 0.000 claims description 17
- 241000207965 Acanthaceae Species 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000000452 restraining effect Effects 0.000 claims description 6
- 239000011083 cement mortar Substances 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 7
- 238000009417 prefabrication Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 238000003908 quality control method Methods 0.000 abstract 1
- 239000011178 precast concrete Substances 0.000 description 6
- 238000009415 formwork Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Abstract
The invention discloses a multilayer steel tube concrete edge constraint superposed shear wall and a preparation method thereof, belonging to the field of fabricated buildings. The invention realizes the integral prefabrication of the rectangular steel pipe and the multi-layer composite shear wall, has large integral rigidity, is convenient to transport and hoist, can realize the integral hoisting of the multi-layer wallboard during construction, reduces the vertical deviation of the multi-layer wallboard, and has simple process and easy quality control. During preparation, the inner blade plate is placed on the supporting piece after being turned over, a cavity template is not required to be arranged in the cavity, the operation of drawing out the cavity template is avoided, and the production efficiency is high. The rectangular steel pipe is welded with the horizontal steel bar, the connection is reliable, and the force transmission is direct. Rectangular steel pipes on two sides are used as the side molds of the outer blade plate and are integrally cast with the outer blade plate, so that the side molds of the outer blade plate are saved, the working procedure is simple, and time and labor are saved; the invention solves the problem of gaps between the rectangular steel pipe and the inner and outer blade plates, avoids seam treatment between the rectangular steel pipe and the superposed shear wall, avoids concrete leakage after on-site pouring, and has better overall performance.
Description
Technical Field
The invention relates to the field of assembly type buildings, in particular to a multilayer concrete-filled steel tube edge constraint superposed shear wall and a preparation method thereof.
Background
The precast concrete superposed shear wall is composed of a precast part and a cast-in-place part, wherein the precast part is a member which is formed by inner and outer precast reinforced concrete panels (called inner leaf plates and outer leaf plates for short) through connecting pieces and is provided with a middle cavity, the connecting pieces of the precast part comprise but are not limited to lattice steel bars (steel bar trusses), section steel or steel plate strips and the like, the middle cavity of the precast part is used for casting concrete in place, and the post-cast concrete can be integrally stressed with the precast part to finally form the integrated precast concrete superposed shear wall.
The steel tube concrete edge constraint superimposed shear wall is an improvement of the traditional precast concrete superimposed shear wall, two ends of the traditional precast concrete superimposed shear wall are connected with rectangular steel tubes, the rectangular steel tubes are used as constraint (construction) edge members of the shear wall, and examples of the steel tube concrete edge constraint superimposed shear wall are disclosed in chinese patent document CN 105569224A.
The existing manufacturing method of the steel tube concrete edge constraint superposed shear wall comprises the following steps: firstly, manufacturing a reinforcing mesh of an inner blade plate, wherein horizontal reinforcing steel bars of the reinforcing mesh of the inner blade plate are welded with rectangular steel pipes which are erected at two sides and provided with studs; then, installing the connecting piece of the inner and outer blade plates on the reinforcing mesh of the inner blade plate; secondly, mounting concrete moulds at two ends of the rectangular steel pipe, pouring concrete of the inner blade plate and vibrating to be compact; then, laying a cavity template (polystyrene board) on the inner leaf plate, placing a reinforcing mesh of the outer leaf plate, and welding horizontal reinforcing steel bars of the reinforcing mesh with rectangular steel pipes supported at two sides; and finally, pouring concrete of the outer blade plate, vibrating to be compact, curing to the specified strength, removing the formwork, removing the formworks at two ends of the rectangular steel pipe, and removing the middle filler formwork to finish the manufacturing.
The method realizes the integral manufacture of the steel pipe concrete edge constraint superposed shear wall, but after the manufacture is finished, the built-in cavity template is difficult to pull out, the manufacture efficiency is low, and the rectangular steel pipe and the superposed shear wall are connected by the studs, so the process is complicated and the cost is high.
In addition, the concrete-filled steel tube edge restraining superposed shear walls in the prior art are all prefabricated in a single layer, when a multi-layer and high-rise building is constructed in site, the concrete-filled steel tube edge restraining superposed shear walls need to be hoisted layer by layer, the on-site welding quantity of steel tubes is large, and the integral hoisting of the multi-layer concrete-filled steel tube edge restraining superposed shear walls cannot be realized; in addition, the process of hoisting layer by layer is not only complicated, but also the vertical deviation of the multilayer wall board is easy to appear.
Disclosure of Invention
The invention provides a multilayer steel pipe concrete edge constraint superposed shear wall and a preparation method thereof, which realize the integral prefabrication of the multilayer steel pipe concrete edge constraint superposed shear wall, have high integral rigidity, are convenient to transport and hoist, reduce the vertical deviation of multilayer wallboards during construction, have simple process and easily controlled quality, do not need to arrange cavity templates during preparation, have high production efficiency, simple operation and low cost.
The technical scheme provided by the invention is as follows:
the utility model provides a multilayer steel pipe concrete edge restraint superimposed shear wall, includes interior acanthus leaf, outer acanthus leaf, at least one connecting piece and two rectangle steel pipes, wherein:
the inner leaf plate comprises an inner leaf plate reinforcing steel mesh and inner leaf plate concrete, the inner leaf plate reinforcing steel mesh comprises inner leaf plate horizontal reinforcing steel bars and inner leaf plate vertical reinforcing steel bars, the inner leaf plate vertical reinforcing steel bars are arranged along the height direction of the inner leaf plate in a through-length mode, the inner leaf plate concrete is broken at the interlayer position to form an inner leaf plate interlayer gap, the inner leaf plate vertical reinforcing steel bars penetrate through the inner leaf plate interlayer gap, and no inner leaf plate horizontal reinforcing steel bars exist in the inner leaf plate interlayer gap;
the outer blade plate comprises an outer blade plate reinforcing steel mesh and outer blade plate concrete, the outer blade plate reinforcing steel mesh comprises outer blade plate horizontal reinforcing steel bars and outer blade plate vertical reinforcing steel bars, the outer blade plate vertical reinforcing steel bars are arranged along the height direction of the outer blade plate in a through-length mode, the outer blade plate concrete is broken at the interlayer position to form an outer blade plate interlayer gap, the outer blade plate vertical reinforcing steel bars penetrate through the outer blade plate interlayer gap, and no outer blade plate horizontal reinforcing steel bars exist in the outer blade plate interlayer gap;
the inner blade plate and the outer blade plate are oppositely arranged at a certain interval, the connecting piece is positioned between the inner blade plate and the outer blade plate, and two ends of the connecting piece are respectively fixedly connected with the inner blade plate and the outer blade plate; the two rectangular steel pipes are respectively and fixedly connected to two sides of the width direction of the inner blade plate and the width direction of the outer blade plate, and the rectangular steel pipes are arranged in the full length direction of the height direction of the inner blade plate and the height direction of the outer blade plate.
Furthermore, the connecting piece is a steel bar truss, profile steel or a steel plate belt.
Furthermore, two ends of the connecting piece are respectively anchored into the inner blade plate and the outer blade plate.
Furthermore, the top end of the rectangular steel pipe extends upwards out of the top ends of the inner leaf plate and the outer leaf plate, and the bottom end of the rectangular steel pipe extends downwards out of the bottom ends of the inner leaf plate and the outer leaf plate.
A method of making a multi-layer concrete-filled steel tube edge-constraining laminated shear wall, the method comprising:
s1: manufacturing the inner blade plate reinforcing steel mesh according to the design size of the inner blade plate, wherein the inner blade plate vertical reinforcing steel bars are arranged along the height direction of the inner blade plate in a full-length mode, and the inner blade plate horizontal reinforcing steel bars are not arranged at the gaps among the inner blade plate layers;
the width of the design size of the inner blade plate is smaller than that of the design size of the outer blade plate by a set value;
s2: fixing the connecting piece on the inner blade plate reinforcing mesh piece, integrally placing the inner blade plate reinforcing mesh piece and the connecting piece on a die table, and enabling the connecting piece to be positioned above the inner blade plate reinforcing mesh piece;
s3: erecting an inner blade plate mould around the inner blade plate reinforcing steel bar mesh sheet according to the design size of the inner blade plate, arranging an interlayer template at the gap between the inner blade plate layers, pouring inner blade plate concrete, and removing the inner blade plate mould and the interlayer template after curing to specified strength;
s4: manufacturing an outer blade plate reinforcing steel mesh according to the design size of the outer blade plate, wherein the outer blade plate vertical reinforcing steel bars are arranged in the full length direction of the outer blade plate, and the outer blade plate horizontal reinforcing steel bars are not arranged in the gap between the outer blade plate layers;
s5: arranging rectangular steel pipes on two sides of the outer blade steel bar mesh piece, welding two ends of the outer blade horizontal steel bar with the rectangular steel pipes, and welding supporting pieces on set positions of the inner and outer side walls of the rectangular steel pipes;
s6: placing the outer blade plate reinforcing mesh and the rectangular steel pipe on a mould table integrally, erecting an outer blade plate end mould, arranging an interlayer template at a gap between the outer blade plate layers, taking the rectangular steel pipe as an outer blade plate side mould, and pouring outer blade plate concrete;
s7: turning the inner blade plate and the connecting piece by 180 degrees integrally, placing the two ends of the width of the inner blade plate on the supporting piece, anchoring the connecting piece into the poured outer blade plate concrete for a set distance, vibrating and compacting the outer blade plate concrete, and removing an outer blade plate end mold and an interlayer template after maintaining to a set strength;
the supporting piece is arranged at a position which meets the condition that the top surface of the inner blade plate is flush with the top surface of the rectangular steel pipe after two ends of the width of the inner blade plate are placed on the supporting piece;
s8: and filling slurry in the gap between the inner leaf plate and the rectangular steel pipe for gap plugging, and finishing the preparation of the multilayer concrete-filled steel pipe edge constraint superposed shear wall.
Further, in S7, bottom surfaces of both ends of the width of the inner blade rest on the top surface of the support.
Further, in S1, two ends of the horizontal steel bar of the inner blade plate extend outward from two sides of the designed size of the inner blade plate by a set length, and a protective sleeve is sleeved on the portion of the horizontal steel bar of the inner blade plate extending out;
the S3 further comprises: after the protective sleeve is maintained to the specified strength, the protective sleeve is removed;
the S7 further comprises: and placing the extended part of the horizontal steel bar of the inner blade plate on the top surface of the support, and welding the extended part of the horizontal steel bar of the inner blade plate and the support together.
Further, the S1 further includes: welding a connecting plate at each end of the horizontal steel bar of the inner blade plate, wherein the thickness and the height of the connecting plate are respectively equal to the thickness and the height of the designed size of the inner blade plate;
when the inner blade plate die is erected around the reinforcing mesh of the inner blade plate in the S3, the inner blade plate end die is erected, and the connecting plate is used as the inner blade plate side die;
the S7 further comprises: and placing the bottom surfaces of the connecting plates at the two ends of the width of the inner blade plate on the top surface of the support, and welding the connecting plates and the support together.
Further, the connecting plate includes first vertical limit and first horizontal limit, first vertical limit with the both ends welding of interior acanthus leaf horizontal reinforcement to first vertical limit is located on the both ends face of interior acanthus leaf width, first horizontal limit is located the top surface of interior acanthus leaf before the upset, and the top surface on first horizontal limit is with the top surface parallel and level of interior acanthus leaf before the upset.
Furthermore, the interlayer template is made of rubber, the interlayer template is formed by oppositely splicing an upper template and a lower template, splicing positioning structures are arranged on two opposite surfaces of the upper template and the lower template, and semicircular grooves are formed in the two opposite surfaces of the upper template and the lower template;
when the clearance between the inner blade plate layers or the clearance between the outer blade plate layers is provided with the interlayer template, the upper template and the lower template are spliced into the interlayer template from the two sides of the vertical reinforcing steel bars of the inner blade plate or the two sides of the vertical reinforcing steel bars of the outer blade plate inwards, the positioning part of the interlayer template is arranged on the template table, the semicircular grooves of the upper template and the lower template are spliced to form a rib penetrating hole, and the vertical reinforcing steel bars of the inner blade plate or the vertical reinforcing steel bars of the outer blade plate are positioned in the rib penetrating hole.
Further, the support piece comprises a second vertical edge and a second horizontal edge, the second vertical edge is welded to the outer surface of the inner side wall of the rectangular steel pipe, and the second horizontal edge is used for placing two ends of the width of the inner blade plate.
Further, the slurry is micro-expansion high-strength cement mortar or fine aggregate concrete.
The invention has the following beneficial effects:
the method comprises the steps of firstly pouring the inner blade plate, realizing the multilayer structure of the inner blade plate through the interlayer template during pouring, then integrally pouring the outer blade plate and the rectangular steel pipe, realizing the multilayer structure of the outer blade plate through the interlayer template during pouring, turning the inner blade plate, enabling the connecting piece to be anchored into the concrete of the outer blade plate, filling slurry into a gap between the inner blade plate and the rectangular steel pipe, integrally prefabricating the rectangular steel pipe and the multi-layer laminated shear wall, and obtaining the integrally prefabricated multilayer steel pipe concrete edge constraint laminated shear wall.
When the multilayer steel pipe concrete edge restraint superimposed shear wall is manufactured, the inner blade plate is placed on the supporting piece after being overturned, a cavity template is not required to be arranged in the cavity, the operation of drawing out the cavity template is avoided, and the production efficiency is high. Rectangular steel pipe and horizontal steel bar welding have avoided the stud to connect defect that the process is loaded down with trivial details, with high costs, connect reliably, pass the power directness. Rectangular steel pipes on two sides are used as the side molds of the outer blade plate and are integrally cast with the outer blade plate, so that the side molds of the outer blade plate are saved, the working procedure is simple, and time and labor are saved; the invention solves the problem of gaps between the rectangular steel pipe and the inner and outer blade plates, avoids seam treatment between the rectangular steel pipe and the superposed shear wall, avoids concrete leakage after on-site pouring, and has better overall performance.
Drawings
FIG. 1 is a perspective view of a multi-layer concrete filled steel tube edge restraining laminated shear wall of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 isbase:Sub>A sectional view taken along line A-A of FIG. 2;
FIG. 4 is a sectional view taken along line B-B of FIG. 2;
FIG. 5 is a schematic illustration of the preparation of the inner leaf;
FIG. 6 is another schematic illustration of inner leaf preparation;
FIG. 7 is yet another schematic illustration of the preparation of an inner leaf;
FIG. 8 is a schematic illustration of the preparation of the outer leaf;
FIG. 9 is another schematic illustration of the preparation of an outer leaf;
FIG. 10 is a partial cross-sectional view of a multi-layer concrete filled steel tube edge restraining laminated shear wall made from the inner leaf of FIG. 5 and the outer leaf of FIG. 8;
FIG. 11 is a partial cross-sectional view of a multi-layer concrete filled steel tube edge constraining superimposed shear wall made from the inner leaf of FIG. 6 and the outer leaf of FIG. 9;
FIG. 12 is a partial cross-sectional view of a multi-layer concrete filled steel tube edge constraining superimposed shear wall made from the inner leaf of FIG. 7 and the outer leaf of FIG. 8;
FIG. 13 is a schematic view of the outer leaf after concrete is poured;
FIG. 14 is a schematic view of the inner leaf being inverted and placed over the outer leaf;
FIG. 15 is a schematic view of the construction of the gap between the outer blade layers;
fig. 16 is a schematic structural view of an interlayer template.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention provides a multilayer concrete-filled steel tube edge-constrained superposed shear wall, which comprises an inner leaf plate 1, an outer leaf plate 2, at least one connecting piece 3 and two rectangular steel tubes 4, as shown in fig. 1-4, wherein:
the inner blade plate 1 comprises an inner blade plate reinforcing mesh 5 and inner blade plate concrete 6, and the inner blade plate reinforcing mesh 5 comprises inner blade plate horizontal reinforcing steel bars 7 and inner blade plate vertical reinforcing steel bars 8; the inner blade plate vertical reinforcing steel bars 8 are arranged in a full-length mode along the height direction of the inner blade plate 1, the inner blade plate concrete 6 is cut off at the interlayer position to form an inner blade plate interlayer gap 9, and the inner blade plate interlayer gap 9 is a reserved gap between an upper floor and a lower floor to form an inner blade plate with a multilayer structure; the vertical steel bars 8 of the inner blade plates penetrate through the gaps 9 between the inner blade plates, and the horizontal steel bars 7 of the inner blade plates do not exist in the gaps 9 between the inner blade plates.
The outer blade plate 2 comprises an outer blade plate steel bar mesh 10 and outer blade plate concrete 11, and the outer blade plate steel bar mesh 10 comprises outer blade plate horizontal steel bars 12 and outer blade plate vertical steel bars 13; the outer blade plate vertical reinforcing steel bars 13 are arranged along the height direction of the outer blade plates 2 in a full-length mode, the outer blade plate concrete 11 is broken at the interlayer position to form an outer blade plate interlayer gap 14, and the outer blade plate interlayer gap 14 is a reserved gap between an upper floor and a lower floor to form the outer blade plates with a multilayer structure; the outer blade plate vertical reinforcing steel bars 13 penetrate through gaps 14 between outer blade plate layers, and outer blade plate horizontal reinforcing steel bars 12 are not arranged at the gaps 14 between the outer blade plate layers.
The inner blade plate 1 and the outer blade plate 2 are oppositely arranged at a certain interval, the connecting piece 3 is positioned between the inner blade plate 1 and the outer blade plate 2, and two ends of the connecting piece 3 are respectively fixedly connected with the inner blade plate 1 and the outer blade plate 2; the connecting piece 3 can be in the form of a steel bar truss, section steel or a steel plate strip and the like. The two ends of the connecting piece 3 can be respectively anchored into the inner blade plate 1 and the outer blade plate 2, so that the connection between the connecting piece and the inner blade plate 1 and the connection between the connecting piece and the outer blade plate 2 are realized.
Two rectangle steel pipes 4 are fixed connection respectively in the width direction's of interior lamina tecti 1 and outer lamina tecti 2 both sides to rectangle steel pipe 4 leads to long arranging along the direction of height of interior lamina tecti 1 and outer lamina tecti 2, forms the cavity in the middle of rectangle steel pipe 4 and interior lamina tecti 1 and the outer lamina tecti 2 for cast in situ concrete during the construction.
Traditional precast concrete superimposed shear wall can't prefabricate into multilayer structure, because multilayer structure need the concrete of the interior acanthus leaf of position disconnection between the layer to the clearance of floor about reserving, this just leads to reserving gap department and only being connected by the reinforcing bar (specific, only by vertical steel bar connection), does not have the concrete to connect, leads to its bulk stiffness less, and the transportation, the hoist and mount work degree of difficulty is very big, so traditional precast concrete superimposed shear wall can't realize the multilayer prefabrication.
The steel pipe concrete edge constraint superposed shear wall is arranged into a multilayer structure, concrete of the inner and outer leaf plates is disconnected at interlayer positions, and the interlayer is connected by the inner leaf plate vertical steel bars and the outer leaf plate vertical steel bars. And the two sides of the inner leaf plate and the two sides of the outer leaf plate are connected through rectangular steel pipes, and the rectangular steel pipes are used as constraint (structure) edge members of the shear wall to provide enough supporting rigidity for a multilayer structure, so that the multilayer concrete-filled steel pipe edge constraint superposed shear wall is integrally prefabricated, the integral rigidity is high, and the transportation and the hoisting are convenient. The multilayer steel pipe concrete edge constraint superimposed shear wall can realize the integral hoisting of multilayer wallboards during the construction of two-layer and three-layer low-rise buildings, and compared with the hoisting of the multilayer wallboards, the vertical deviation of the multilayer wallboards is reduced, the process is simple, and the quality is easy to control.
The top end of the rectangular steel pipe 4 can extend upwards to the top ends of the inner leaf plate 1 and the outer leaf plate 2, the extending height = the thickness of the floor slab + (10-20) mm, the bottom end of the rectangular steel pipe 4 can extend downwards to the bottom ends of the inner leaf plate 1 and the outer leaf plate 2, and the extending length is about 40-50 mm. So be convenient for upper and lower floor's multilayer steel pipe concrete edge restraint superimposed shear wall links to each other at the floor department, for upper and lower floor rectangle steel pipe 4 welding reserved space.
The embodiment of the invention also provides a preparation method of the multilayer concrete filled steel tube edge constraint superposed shear wall, as shown in fig. 5 to 16, the method comprises the following steps:
s1: the inner blade plate reinforcing mesh 5 is manufactured according to the design size of the inner blade plate 1, and when the inner blade plate reinforcing mesh is arranged, the vertical reinforcing bars 8 of the inner blade plate are arranged in the through length along the height direction of the inner blade plate 1, and the horizontal reinforcing bars 7 of the inner blade plate are not arranged in the gap 9 between the inner blade plate layers.
The width of the design size of the inner blade plate 1 is required to be smaller than that of the design size of the outer blade plate 2 by a set value, and the specific value can be set according to actual conditions.
S2: the connecting piece 3 is fixed on the inner blade plate reinforcing mesh 5, and particularly, the connecting piece 3 can be fixed on the inner blade plate reinforcing mesh 5 in a welding mode and the like. The inner leaf plate rebar mesh 5 and the connector 3 are then placed on the die table 15 in a unitary manner, with the connector 3 being located above the inner leaf plate rebar mesh 5.
S3: erecting an inner blade plate mould around an inner blade plate reinforcing mesh 5 according to the design size of the inner blade plate 1, arranging an interlayer template 16 at an inner blade plate interlayer gap 9, pouring inner blade plate concrete 6, removing the inner blade plate mould and the interlayer template 16 after curing to a specified strength, and disconnecting the inner blade plate concrete 6 at the interlayer template 16 to realize the integral preparation of the inner blade plate 1 with a multilayer structure, as shown in figures 5-7.
S4: the outer blade plate reinforcing mesh 10 is manufactured according to the design size of the outer blade plate 2, and when the outer blade plate reinforcing mesh is arranged, the outer blade plate vertical reinforcing bars 13 are arranged in the full length along the height direction of the outer blade plate 2, and the outer blade plate horizontal reinforcing bars 12 are not arranged in the gaps 14 between the outer blade plate layers.
S5: rectangular steel pipes 4 are arranged on two sides of the outer blade plate steel bar mesh 10, two ends of the outer blade plate horizontal steel bars 12 are welded with the rectangular steel pipes 4, and supporting pieces 17 are welded on set positions of the outer surface of the inner side wall of each rectangular steel pipe 4.
Wherein, the setting position of support piece 17 should satisfy in S6 after the both ends of interior lamina 1 width were shelved on support piece 17, the top surface of interior lamina 1 is flush with the top surface of rectangular steel pipe 4.
S6: the outer blade plate reinforcing mesh 10 and the rectangular steel pipe 4 are integrally placed on the mold table 15, the outer blade plate end mold 26 is erected, the interlayer mold plate 16 is arranged in the interlayer gap 14 of the outer blade plate, the rectangular steel pipe 4 is used as an outer blade plate side mold, and the outer blade plate concrete 11 is poured, as shown in figures 8-9 and 13.
According to the invention, the rectangular steel pipes 4 on the two sides are integrally cast with the outer blade plates 2 as the outer blade plate side molds, so that the side molds of the outer blade plates 2 are saved, the process is simple, time and labor are saved, the problems of verticality deviation of the rectangular steel pipes 4 and gaps between the rectangular steel pipes 4 and the outer blade plates 2 are solved, the slurry leakage of post-cast concrete on site is avoided, and the overall performance is better. And an interlayer template 16 is arranged before pouring, so that the outer blade concrete 11 is broken at the interlayer template 16 to obtain the outer blade 2 with a multilayer structure.
S7: the inner leaf 1 and the connector 3 are turned over as a whole by 180 °, the two ends of the width of the inner leaf 1 are laid on the supports 17, and the connector 3 is anchored a set distance into the poured outer leaf concrete 11, as shown in fig. 14. The outer vane concrete 11 is vibrated to be dense and cured to a prescribed strength, and then the outer vane end mold 26 and the interlayer mold 16 are removed, as shown in fig. 4 and 14.
When the connecting piece 3 is a steel bar truss, section steel or a steel plate strip, the lower chord steel of the steel bar truss, the lower flange of the section steel and the lower end of the steel plate strip are anchored into the poured outer leaf plate concrete 11.
S8: and filling slurry 18 such as micro-expansion high-strength cement mortar or fine aggregate concrete and the like in the gap between the inner leaf plate 1 and the rectangular steel pipe 4 for gap plugging, and finishing the preparation of the multilayer concrete-filled pipe edge constraint superposed shear wall, as shown in fig. 7.
The filled slurry 18 can prevent gaps from being left between the rectangular steel tube 4 and the outer blade plate 2, thereby avoiding the leakage of the concrete after the concrete is poured on site, avoiding the structure from being exposed and enabling the surface of the shear wall to be smooth.
The method comprises the steps of firstly pouring the inner blade plate, realizing the multilayer structure of the inner blade plate through the interlayer template during pouring, then integrally pouring the outer blade plate and the rectangular steel pipe, realizing the multilayer structure of the outer blade plate through the interlayer template during pouring, turning the inner blade plate, enabling the connecting piece to be anchored into the concrete of the outer blade plate, filling slurry into a gap between the inner blade plate and the rectangular steel pipe, integrally prefabricating the rectangular steel pipe and the multi-layer laminated shear wall, and obtaining the integrally prefabricated multilayer steel pipe concrete edge constraint laminated shear wall.
When the multilayer steel pipe concrete edge restraint superimposed shear wall is manufactured, the inner blade plate is placed on the supporting piece after being overturned, a cavity template is not required to be arranged in the cavity, the operation of drawing out the cavity template is avoided, and the production efficiency is high. Rectangular steel pipe and horizontal steel bar welding have avoided the stud to connect defect that the process is loaded down with trivial details, with high costs, connect reliably, pass power directness. Rectangular steel pipes on two sides are used as the side molds of the outer blade plate and are integrally cast with the outer blade plate, so that the side molds of the outer blade plate are saved, the working procedure is simple, and time and labor are saved; the invention solves the problem of gaps between the rectangular steel pipe and the inner and outer blade plates, avoids seam treatment between the rectangular steel pipe and the superposed shear wall, avoids concrete leakage after on-site pouring, and has better overall performance.
When the inner blade plate 1 and the outer blade plate 2 are poured, interlayer templates 16 need to be arranged at the position of the interlayer gap 9 of the inner blade plate and the position of the interlayer gap 14 of the outer blade plate, and because the vertical reinforcing steel bars 8 of the inner blade plate and the vertical reinforcing steel bars 13 of the outer blade plate are arranged at the position of the interlayer gap 9 of the inner blade plate and the position of the interlayer gap 14 of the outer blade plate, the traditional templates are difficult to arrange. In addition, rectangular steel pipes 4 are further arranged on two sides of the gap 14 between the outer blade layers, and the template in the gap 14 between the outer blade layers is difficult to pull out due to the limitation of the rectangular steel pipes 4.
Therefore, the interlayer template 16 is made of rubber, and as shown in fig. 16, the interlayer template 16 is formed by oppositely splicing an upper template 19 and a lower template 20, and splicing positioning structures 21 such as clamping grooves are arranged on two opposite surfaces of the upper template 19 and the lower template 20, so that accurate positioning is realized when the upper template 19 and the lower template 20 are spliced.
According to the invention, the interlayer template 16 is spliced together after being arranged into two parts, so that the limitation of the inner blade plate vertical steel bar 8 or the outer blade plate vertical steel bar 13 on the template arrangement is avoided, the interlayer template 16 is made of rubber and has certain elasticity, and can generate enough deformation during disassembly, so that the upper template 19 and the lower template 20 can be pulled out from the gap of the inner blade plate vertical steel bar 8 or the outer blade plate vertical steel bar 13, the operation is simple, the disassembly is convenient, the time and the labor are saved, and the cost is low.
The thickness of the interlayer template 16 may also be equal to the thickness of the inner blade layer gap 9 or the outer blade layer gap 14, in which case only one interlayer template 16 needs to be arranged in one inner blade layer gap 9 or the outer blade layer gap 14 to disconnect the inner blade layer concrete 6 or the outer blade layer concrete 11 by a set distance.
The thickness of the interlayer templates 16 can also be smaller than the thickness of the inner blade layer gap 9 or the outer blade layer gap 14, at this time, two interlayer templates 16 need to be arranged in one inner blade layer gap 9 or one outer blade layer gap 14 and positioned, a reserved gap with a set distance can be formed between the two interlayer templates 16, and the inner blade layer concrete 6 or the outer blade layer concrete 11 can be disconnected with the set distance during pouring.
When the interlayer template 16 is positioned, the positioning part 23 can be arranged on the die table 15, the positioning part 23 can be angle steel, and the angle steel is welded on the die table 15 and can be reused in the manufacture of the inner blade plate 1 and the outer blade plate 2 with the same specification after being welded, as shown in fig. 15.
As an improvement, in S7, after the inner blade plate 1 and the connecting piece 3 are integrally turned over by 180 °, the bottom surfaces of the two ends of the width of the inner blade plate 1 can be directly placed on the top surfaces of the supporting pieces 17, as shown in fig. 8, and the construction is simple and rapid.
At this time, the lengths of the inner blade horizontal reinforcing steel bars 7 and the inner blade vertical reinforcing steel bars 8 are respectively equal to the width and the height of the design size of the inner blade 1, as shown in fig. 5; the width of the inner blade plate 1 is 5-10mm smaller than that of the outer blade plate 2, the height difference between the top surface of the supporting piece 17 and the top surface of the rectangular steel pipe 4 is equal to the thickness of the inner blade plate 1, the thickness is 50mm, the extending length of the supporting piece 17 is 30mm, and the lower end of the connecting piece 3 is anchored into poured outer blade plate concrete for 30mm.
As another improvement, in S1, two ends of the horizontal steel bar 7 of the inner blade plate extend outwards from two sides of the width of the designed size of the inner blade plate 1 by a set length, as shown in fig. 6; the part 24 of the horizontal steel bar 7 of the inner blade plate extending out is sleeved with a protective sleeve.
The length that interior paddle horizontal reinforcement 7 stretches out is no less than 5 times of interior paddle horizontal reinforcement 7 diameter, and the effect of lag is that the part 24 that the portion that the interior paddle horizontal reinforcement 7 stretches out is avoided bonding together with interior paddle concrete 6 of pouring. At this time, the width of the inner blade 1 is 10mm smaller than that of the outer blade 2.
Correspondingly, S3 further includes: and (5) after the protective sleeve is maintained to the specified strength, removing the protective sleeve. In S5, the height difference between the top surface of the supporting piece 17 and the top surface of the rectangular steel pipe 4 is 30mm, and the extending length of the supporting piece 17 is not less than 5.5 times of the diameter of the horizontal steel bar 7 of the inner blade plate, as shown in FIG. 9.
Correspondingly, S7 further includes: the extended part 24 of the horizontal steel bar 7 of the inner blade plate is placed on the top surface of the supporting member 17, and the extended part 24 of the horizontal steel bar 7 of the inner blade plate is welded with the supporting member 17, so that the rectangular steel pipe 4 is reliably connected with the horizontal steel bars 7 and 12 of the inner blade plate, and the overall rigidity is improved, as shown in fig. 11. At this point, the lower end of the connecting member 3 is anchored 30mm into the poured outer panel concrete.
As a further improvement, S1 further comprises: two ends of the horizontal steel bar 7 of the inner blade plate are respectively welded with a connecting plate 25, and the thickness and the height of the connecting plate 25 are respectively equal to the thickness and the height of the designed size of the inner blade plate 1, as shown in fig. 7.
Correspondingly, when the inner blade plate mold is erected around the reinforcing mesh 5 of the inner blade plate in the step S3, the end mold of the inner blade plate is erected, and the connecting plate 25 is used as the side mold of the inner blade plate. The width of the inner leaf 1 is now 10mm less than the outer leaf 2.
In S5, the height difference between the top surface of the supporting member 17 and the top surface of the rectangular steel pipe 4 is equal to the thickness of the inner blade plate 1, which is 50mm, and the extension length of the supporting member 17 is 30mm, as shown in fig. 8.
Correspondingly, S7 further includes: the bottom surfaces of the connecting plates 25 at the two ends of the width of the inner blade plate 1 are placed on the top surface of the supporting piece 17, and the connecting plates 25 are welded with the supporting piece 17, so that the rectangular steel pipe 4 is reliably connected with the horizontal reinforcing steel bars 7 and 12 of the inner blade plate and the outer blade plate, and the overall rigidity is improved, as shown in fig. 12. At this point, the lower end of the connector 3 is anchored 30mm into the poured concrete of the outer panel.
The invention is not limited to the specific structural form of the connecting plate 25, and for example, as shown in fig. 7, the connecting plate 25 may be an angle steel, which includes a first vertical side and a first horizontal side, the first vertical side is welded to two ends of the horizontal steel bar 7 of the inner blade plate, the first vertical side is located on two end faces of the width of the inner blade plate 1, the first horizontal side is located on the top surface of the inner blade plate 1 before turning, and the top surface of the first horizontal side is flush with the top surface of the inner blade plate 1 before turning.
The aforementioned supporting member 17 may be an angle steel or a ribbed steel plate, as shown in fig. 8 and 9, and includes a second vertical side welded to the outer surface of the inner side wall of the rectangular steel pipe 4 and a second horizontal side horizontally extending inward for placing both ends of the width of the inner leaf plate 1.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. The utility model provides a multilayer steel pipe concrete edge restraint superimposed shear wall which characterized in that, includes interior acanthus leaf, outer acanthus leaf, at least one connecting piece and two rectangle steel pipes, wherein:
the inner leaf plate comprises an inner leaf plate reinforcing steel mesh and inner leaf plate concrete, the inner leaf plate reinforcing steel mesh comprises inner leaf plate horizontal reinforcing steel bars and inner leaf plate vertical reinforcing steel bars, the inner leaf plate vertical reinforcing steel bars are arranged along the height direction of the inner leaf plate in a through-length mode, the inner leaf plate concrete is broken at the interlayer position to form an inner leaf plate interlayer gap, the inner leaf plate vertical reinforcing steel bars penetrate through the inner leaf plate interlayer gap, and no inner leaf plate horizontal reinforcing steel bars exist in the inner leaf plate interlayer gap;
the outer blade plate comprises an outer blade plate reinforcing steel mesh and outer blade plate concrete, the outer blade plate reinforcing steel mesh comprises outer blade plate horizontal reinforcing steel bars and outer blade plate vertical reinforcing steel bars, the outer blade plate vertical reinforcing steel bars are arranged along the height direction of the outer blade plate in a through-length mode, the outer blade plate concrete is broken at the interlayer position to form an outer blade plate interlayer gap, the outer blade plate vertical reinforcing steel bars penetrate through the outer blade plate interlayer gap, and no outer blade plate horizontal reinforcing steel bars exist in the outer blade plate interlayer gap;
the inner blade plate and the outer blade plate are oppositely arranged at a certain interval, the connecting piece is positioned between the inner blade plate and the outer blade plate, and two ends of the connecting piece are respectively fixedly connected with the inner blade plate and the outer blade plate; the two rectangular steel pipes are respectively and fixedly connected to two sides of the width direction of the inner blade plate and the width direction of the outer blade plate, and the rectangular steel pipes are arranged in the full length direction of the height direction of the inner blade plate and the height direction of the outer blade plate.
2. The multi-layer concrete-filled steel tube edge-constraining superimposed shear wall of claim 1, wherein the connecting members are steel trusses, steel sections, or steel plate strips.
3. The multi-layer concrete-filled steel tube edge-constraining superimposed shear wall of claim 1 or 2, wherein both ends of the connecting member are anchored into the inner and outer blades, respectively.
4. The multi-layer concrete filled steel tube edge-constraining superimposed shear wall of claim 3, wherein the top ends of the rectangular steel tubes extend upward beyond the top ends of the inner and outer blades, and the bottom ends of the rectangular steel tubes extend downward beyond the bottom ends of the inner and outer blades.
5. A method of making a multi-layer concrete filled steel tube edge restraining laminated shear wall of any one of claims 1-4, comprising:
s1: manufacturing the inner blade plate reinforcing steel mesh according to the design size of the inner blade plate, wherein the inner blade plate vertical reinforcing steel bars are arranged along the height direction of the inner blade plate in a full-length mode, and the inner blade plate horizontal reinforcing steel bars are not arranged at the gaps among the inner blade plate layers;
the width of the design size of the inner blade plate is smaller than that of the design size of the outer blade plate by a set value;
s2: fixing the connecting piece on the inner blade plate reinforcing mesh piece, integrally placing the inner blade plate reinforcing mesh piece and the connecting piece on a die table, and enabling the connecting piece to be positioned above the inner blade plate reinforcing mesh piece;
s3: erecting an inner blade plate mould around the inner blade plate reinforcing steel mesh according to the design size of the inner blade plate, arranging an interlayer template at the gap between the inner blade plate layers, pouring inner blade plate concrete, and removing the inner blade plate mould and the interlayer template after curing to the specified strength;
s4: manufacturing an outer blade plate reinforcing steel mesh according to the design size of the outer blade plate, wherein the outer blade plate vertical reinforcing steel bars are arranged in the full length direction of the outer blade plate, and the outer blade plate horizontal reinforcing steel bars are not arranged in the gap between the outer blade plate layers;
s5: arranging rectangular steel pipes on two sides of the outer blade steel bar mesh piece, welding two ends of the outer blade horizontal steel bar with the rectangular steel pipes, and welding supporting pieces on set positions of the inner and outer side walls of the rectangular steel pipes;
s6: placing the outer blade plate reinforcing mesh and the rectangular steel pipe on a mould table integrally, erecting an outer blade plate end mould, arranging an interlayer template at a gap between the outer blade plate layers, taking the rectangular steel pipe as an outer blade plate side mould, and pouring outer blade plate concrete;
s7: turning the inner blade plate and the connecting piece by 180 degrees integrally, placing the two ends of the width of the inner blade plate on the supporting piece, anchoring the connecting piece into the poured outer blade plate concrete for a set distance, vibrating and compacting the outer blade plate concrete, and removing an outer blade plate end mold and an interlayer template after maintaining to a set strength;
the supporting piece is arranged at a position which meets the condition that the top surface of the inner blade plate is flush with the top surface of the rectangular steel pipe after two ends of the width of the inner blade plate are placed on the supporting piece;
s8: and filling slurry in the gap between the inner leaf plate and the rectangular steel pipe for gap plugging, and finishing the preparation of the multilayer concrete-filled steel pipe edge constraint superposed shear wall.
6. The method of claim 5, wherein in S7, bottom surfaces of both ends of the width of the inner blade rest on the top surface of the support.
7. The method according to claim 5, wherein in S1, both ends of the horizontal reinforcement bars of the inner blade plate extend outwards from both sides of the width of the designed size of the inner blade plate by a set length, and the portion of the horizontal reinforcement bars of the inner blade plate extending out is covered with a protective sleeve;
the S3 further comprises: after the protective sleeve is maintained to the specified strength, the protective sleeve is removed;
the S7 further comprises: and placing the extended part of the horizontal steel bar of the inner blade plate on the top surface of the support, and welding the extended part of the horizontal steel bar of the inner blade plate and the support together.
8. The method according to claim 5, wherein the S1 further comprises: welding a connecting plate at each end of the horizontal steel bar of the inner blade plate, wherein the thickness and the height of the connecting plate are respectively equal to the thickness and the height of the designed size of the inner blade plate;
when the inner blade plate mold is erected around the reinforcing mesh of the inner blade plate in the S3, the inner blade plate end mold is erected, and the connecting plate is used as an inner blade plate side mold;
the S7 further comprises: and placing the bottom surfaces of the connecting plates at the two ends of the width of the inner blade plate on the top surface of the support, and welding the connecting plates and the support together.
9. The manufacturing method according to claim 8, wherein the connecting plate includes a first vertical side and a first horizontal side, the first vertical side is welded to both ends of the horizontal reinforcement of the inner blade plate, and the first vertical side is located on both end surfaces of the width of the inner blade plate, the first horizontal side is located on the top surface of the inner blade plate before being turned, and the top surface of the first horizontal side is flush with the top surface of the inner blade plate before being turned.
10. The preparation method according to any one of claims 5 to 9, wherein the interlayer template is made of rubber, the interlayer template is formed by relatively splicing an upper template and a lower template, splicing positioning structures are arranged on two opposite surfaces of the upper template and the lower template, and semicircular grooves are formed on two opposite surfaces of the upper template and the lower template;
when an interlayer template is arranged at the gap between the inner blade plates or the gap between the outer blade plates, the upper template and the lower template are inwards spliced into the interlayer template from the two sides of the vertical reinforcing steel bars of the inner blade plates or the two sides of the vertical reinforcing steel bars of the outer blade plates, positioning parts of the interlayer template are arranged on the template table, the semicircular grooves of the upper template and the lower template are spliced to form a reinforcement penetrating hole, and the vertical reinforcing steel bars of the inner blade plates or the vertical reinforcing steel bars of the outer blade plates are positioned in the reinforcement penetrating hole.
11. The method of manufacturing of claim 10, wherein the support comprises a second vertical edge welded to the outer surface of the inner side wall of the rectangular steel tube and a second horizontal edge for resting both ends of the width of the inner leaf.
12. The method for preparing the mortar of claim 10, wherein the slurry is micro-expanded high-strength cement mortar or fine aggregate concrete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211664161.1A CN115928915A (en) | 2022-12-23 | 2022-12-23 | Multilayer steel tube concrete edge constraint superposed shear wall and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211664161.1A CN115928915A (en) | 2022-12-23 | 2022-12-23 | Multilayer steel tube concrete edge constraint superposed shear wall and preparation method thereof |
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Effective date of registration: 20240603 Address after: 250100 No. 27 South Grand Road, Shandong, Ji'nan Applicant after: SHANDONG University Country or region after: China Applicant after: Zhongke Zhiju (Jinan) New Materials Technology Co.,Ltd. Address before: 250100 No. 27 South Grand Road, Shandong, Ji'nan Applicant before: SHANDONG University Country or region before: China Applicant before: Shandong Qianyue Construction Technology Co.,Ltd. |