CN107642179B - Key groove connecting structure of steel plate of assembled frame shear structure and assembling method - Google Patents
Key groove connecting structure of steel plate of assembled frame shear structure and assembling method Download PDFInfo
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- CN107642179B CN107642179B CN201710922930.6A CN201710922930A CN107642179B CN 107642179 B CN107642179 B CN 107642179B CN 201710922930 A CN201710922930 A CN 201710922930A CN 107642179 B CN107642179 B CN 107642179B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 382
- 239000010959 steel Substances 0.000 title claims abstract description 382
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000004567 concrete Substances 0.000 claims abstract description 98
- 238000011065 in-situ storage Methods 0.000 claims abstract description 38
- 238000010276 construction Methods 0.000 claims abstract description 11
- 239000011178 precast concrete Substances 0.000 claims abstract description 11
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 29
- 239000004800 polyvinyl chloride Substances 0.000 claims description 29
- 238000004873 anchoring Methods 0.000 claims description 27
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 14
- 229910000746 Structural steel Inorganic materials 0.000 claims 2
- 238000013461 design Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 138
- 230000005540 biological transmission Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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Abstract
The invention relates to the field of assembled concrete buildings, in particular to a structure and an assembling method for connecting components in an assembled concrete frame-shear wall structure (a frame shear structure for short) by adopting U-shaped steel plate keys and steel plate grooves. The structure comprises: the prefabricated bottom layer column or the prefabricated middle layer column, the prefabricated top layer column, the prefabricated wall, the prefabricated middle layer beam, the prefabricated top layer beam and the cast-in-situ concrete foundation beam are used for connecting the components, and the prefabricated components are transported to a construction site for assembly after being prefabricated in a factory. The components in the assembled concrete frame shear structure adopt a structure of connecting the U-shaped steel plate keys with the steel plate grooves and an assembling method, so that the connection among various precast concrete components is realized, and the requirements in actual design and construction are met.
Description
Technical Field
The invention relates to the field of assembled concrete buildings, in particular to a structure and an assembling method for connecting components in an assembled concrete frame-shear wall structure (a frame shear structure for short) by adopting U-shaped steel plate keys and steel plate grooves.
Background
The concrete frame shear structure is characterized in that a certain number of shear walls are arranged in the frame structure to form flexible and free use space, and the concrete frame shear structure has quite large lateral movement rigidity and has stronger deformation resistance under the action of horizontal load under the requirement of different building functions. The prior art of fabricated concrete structures is mostly limited to pure frame structures or pure shear wall structures, and the related fabricated concrete frame-shear wall structures have less technical application in practical engineering, and related theoretical researches are relatively immature.
The conventional method of the current assembled frame structure is beam and column prefabrication and node cast-in-situ, and the main problem is that the steel bars of the beams and columns in all directions are mutually connected and anchored in a node core area, so that construction is difficult and construction quality is difficult to ensure. The current practice of the assembled shear wall structure is that the vertical steel bars of the upper wall and the lower wall are lapped by adopting preformed hole steel bar slurry anchors, and the horizontal steel bars of the left wall and the right wall are lapped by adopting cast-in-situ belts.
In order to solve the above problems, in the prior invention, an assembled concrete frame-shear wall assembled connection structure and an assembled connection method (CN 201210281096.4). In order to solve the above problems, the present invention also proposes another splicing structure and method.
Disclosure of Invention
The invention aims to provide a structure and an assembling method for connecting each component in an assembled concrete frame shear structure by adopting a U-shaped steel plate key and a steel plate groove, so as to realize the connection among various precast concrete components and meet the requirements in actual design and construction.
The technical scheme of the invention is as follows:
an assembled frame shear structure steel plate key slot connection structure, the structure comprising: the prefabricated bottom layer column or the prefabricated middle layer column, the prefabricated top layer column, the prefabricated wall, the prefabricated middle layer beam, the prefabricated top layer beam, the cast-in-situ concrete foundation beam and the embedded U-shaped steel plate grooves and U-shaped steel plate keys for connecting the components, wherein two ends of the cast-in-situ concrete foundation beam are connected with the prefabricated bottom layer column through the extending reinforcing steel bars at the top of the foundation, the top end of the prefabricated bottom layer column is connected with the prefabricated middle layer beam through the longitudinal stress reinforcing steel bars of the prefabricated bottom layer column, the prefabricated wall is arranged among the cast-in-situ concrete foundation beam, the prefabricated bottom layer column and the prefabricated middle layer beam, and the prefabricated wall is connected with the cast-in-situ concrete foundation beam, the prefabricated bottom layer column and the cast-in-situ concrete foundation beam in a matched manner through the embedded U-shaped steel plate grooves and the U-shaped steel plate keys; the prefabricated middle layer beam is characterized in that the two ends of the prefabricated middle layer beam are connected with the prefabricated middle layer beam through longitudinal stress steel bars of the prefabricated bottom layer beam, the top end of the prefabricated middle layer beam is connected with the prefabricated top layer beam through longitudinal stress steel bars of the prefabricated top layer beam, prefabricated walls are arranged among the prefabricated middle layer beam, the prefabricated middle layer beam and the prefabricated top layer beam, and the prefabricated walls are connected with the prefabricated middle layer beam, the prefabricated middle layer beam and the prefabricated top layer beam in a matched mode through pre-buried U-shaped steel plate grooves and U-shaped steel plate keys.
The embedded U-shaped steel plate groove consists of anchoring steel bars and a grooved steel plate, a groove is formed in one side of the grooved steel plate, and the anchoring steel bars are arranged on the other side of the grooved steel plate; the grooves are arranged in parallel, the anchoring bars are arranged in parallel, and each group of the anchoring bars is arranged in parallel.
The key groove connecting structure of the steel plate of the assembled frame shear structure comprises a prefabricated bottom layer column or a prefabricated middle layer column, wherein the prefabricated bottom layer column or the prefabricated middle layer column consists of steel bars in the column, pre-buried U-shaped steel plate grooves and concrete, anchoring steel bars of the pre-buried U-shaped steel plate grooves extend into the steel bars in the column, grooves of the pre-buried U-shaped steel plate grooves face outwards, and concrete is poured outside the steel bars in the column; the steel bar in the column consists of a prefabricated bottom column or a prefabricated middle column longitudinal stress steel bar, column stirrups and a sleeve, wherein the lower end of the prefabricated bottom column or the prefabricated middle column longitudinal stress steel bar is inserted into the sleeve, and the column stirrups are arranged on the outer side of the prefabricated bottom column or the prefabricated middle column longitudinal stress steel bar.
The prefabricated top layer column consists of steel bars in the column, pre-buried U-shaped steel plate grooves and concrete, anchoring steel bars of the pre-buried U-shaped steel plate grooves extend into the steel bars in the column, grooves of the pre-buried U-shaped steel plate grooves are outwards, and concrete is poured outside the steel bars in the column; the reinforcing steel bars in the column consist of prefabricated top column longitudinal stress reinforcing steel bars, column stirrups and sleeves, the lower ends of the prefabricated top column longitudinal stress reinforcing steel bars are inserted into the sleeves, and the column stirrups are arranged on the outer sides of the prefabricated bottom column or the prefabricated middle column longitudinal stress reinforcing steel bars.
The prefabricated wall consists of steel bars in the prefabricated wall, pre-buried U-shaped steel plate grooves and concrete, wherein anchor steel bars of the pre-buried U-shaped steel plate grooves extend into the steel bars in the prefabricated wall, grooves of the pre-buried U-shaped steel plate grooves are outwards, and concrete is poured outside the steel bars in the prefabricated wall; the steel bars in the prefabricated wall comprise shear wall longitudinal stress bars, shear wall transverse distribution bars, shear wall constraint edge component stirrups and shear wall lacing wires, two rows of shear wall longitudinal stress bars are arranged in parallel, each row of shear wall longitudinal stress bars are uniformly distributed and are connected through the parallel arranged shear wall transverse distribution bars, edges of the two rows of shear wall longitudinal stress bars are connected through the parallel arranged shear wall constraint edge component stirrups, and the two rows of opposite parallel shear wall longitudinal stress bars are connected through the shear wall lacing wires.
The prefabricated middle beam consists of steel bars in the prefabricated middle beam, pre-buried U-shaped steel plate grooves and concrete, wherein anchoring steel bars of the pre-buried U-shaped steel plate grooves extend into the steel bars in the prefabricated middle beam, grooves of the pre-buried U-shaped steel plate grooves are outwards, and concrete is poured outside the steel bars in the prefabricated middle beam; the steel bars in the prefabricated middle layer beam comprise frame beam surface hogging moment steel bars, frame positive moment steel bars, frame beam stirrups, beam column node stirrups and polyvinyl chloride pipes, wherein the frame beam surface hogging moment steel bars and the frame positive moment steel bars are oppositely arranged up and down, the outer sides of the frame beam surface hogging moment steel bars and the frame positive moment steel bars are connected through the frame beam stirrups which are arranged in parallel, the polyvinyl chloride pipes are oppositely arranged on two sides of the edges of the frame beam surface hogging moment steel bars and the frame positive moment steel bars, and the oppositely arranged polyvinyl chloride pipes are connected through the beam column node stirrups.
The prefabricated top layer beam consists of steel bars in the prefabricated top layer beam, pre-buried U-shaped steel plate grooves and concrete, wherein anchor steel bars of the pre-buried U-shaped steel plate grooves extend into the steel bars in the prefabricated top layer beam, grooves of the pre-buried U-shaped steel plate grooves are outwards, and concrete is poured outside the steel bars in the prefabricated top layer beam; the steel bars in the prefabricated top layer beam comprise frame beam surface hogging moment steel bars, frame positive moment steel bars, frame beam stirrups, beam column node stirrups and polyvinyl chloride pipes, wherein the frame beam surface hogging moment steel bars and the frame positive moment steel bars are oppositely arranged up and down, the outer sides of the frame beam surface hogging moment steel bars and the frame positive moment steel bars are connected through the frame beam stirrups which are arranged in parallel, the polyvinyl chloride pipes are oppositely arranged on two sides of the edges of the frame beam surface hogging moment steel bars and the frame positive moment steel bars, and the oppositely arranged polyvinyl chloride pipes are connected through the beam column node stirrups.
The U-shaped steel plate key consists of a bolt, a nut and a U-shaped steel plate, the matched bolt and nut are arranged on the inner side of the U-shaped steel plate, two ends of the matched bolt and nut are in contact with the U-shaped steel plate in a propping mode, and a round hole is formed in the bottom of the U-shaped steel plate; the bolt and the nut can be screwed along the reverse rotation of the bolt, and when the bolt and the nut are assembled, the bolt and the nut which are assembled together in advance are placed in the U-shaped steel plate, and the side wall of the U-shaped steel plate is outwards expanded and is tightly contacted with the embedded U-shaped steel plate groove through reverse screwing.
The assembling method of the key slot connecting structure of the steel plate of the assembled frame shear structure comprises the steps of transporting prefabricated components to a construction site for assembly after the prefabricated components are prefabricated in a factory, and specifically hoisting the prefabricated components as follows:
(1) Assembling process of prefabricated bottom column and cast-in-situ concrete foundation beam with embedded U-shaped steel plate groove
The cast-in-situ concrete foundation beam with the embedded U-shaped steel plate groove is identical to the common cast-in-situ foundation beam in manufacturing method, the embedded U-shaped steel plate groove is arranged at the upper side of the cast-in-situ concrete foundation beam, the beam end is taken as the foundation top, and the foundation top is internally provided with a foundation top extension bar;
when in hoisting, hoisting the prefabricated bottom layer column on the top of the foundation, ensuring that the steel bars extending out of the top of the foundation are inserted into the sleeve at the bottom of the prefabricated bottom layer column, and then grouting in the sleeve to complete the assembly of the prefabricated bottom layer column and the cast-in-situ concrete foundation beam with the embedded U-shaped steel plate groove;
(2) Hoisting of prefabricated wall
Firstly, arranging U-shaped steel plate keys in U-shaped steel plate grooves on a cast-in-situ concrete foundation beam with pre-buried U-shaped steel plate grooves; then hoisting the prefabricated wall to the upper part of the cast-in-situ concrete foundation beam, and ensuring that the embedded U-shaped steel plate groove at the lower side of the prefabricated wall is in close contact with the U-shaped steel plate key; finally, installing a U-shaped steel plate key between the prefabricated wall and the prefabricated bottom column to complete the assembly of the prefabricated wall;
(3) Hoisting of prefabricated middle layer beam
Hoisting the prefabricated middle layer beam on the top end of the prefabricated bottom layer column, ensuring that longitudinal stress steel bars of the prefabricated bottom layer column correspond to the polyvinyl chloride pipe in the core node area of the prefabricated middle layer beam, and injecting grouting material into the polyvinyl chloride pipe; installing a U-shaped steel plate key between the prefabricated middle layer beam and the prefabricated wall to finish hoisting the prefabricated middle layer beam;
(4) Repeating the above process to finish hoisting of other layers including the top prefabricated part;
(5) The strip-shaped templates are supported at the joints of the U-shaped steel plate keys on each layer, and the strip-shaped templates are tightly connected with the precast concrete beams, the columns and the shear walls; pouring grouting material into the strip-shaped template until the grouting material fills the gaps of the U-shaped steel plate keys in the strip-shaped template; and after the grouting material is solidified, removing the strip-shaped template to finish the connection of the precast beam, the column and the shear wall.
The invention has the advantages and beneficial effects that:
1. the shearing force and the pressure among the prefabricated components are transmitted through the steel plate key slot structure, the force transmission path is simpler and more definite, and the force transmission is more reliable.
2. The manufacturing of the parts with higher requirements, including the prefabricated beams, the prefabricated columns, the prefabricated walls and the U-shaped steel plate keys, is completed in factories and assembled on site, and only needs to install the U-shaped steel plate for construction and grouting, so that the on-site assembly is simple, the requirements on constructors are not high, the time is saved, the efficiency is high, and the construction progress can be greatly improved.
3. The invention has the advantages of less field wet operation, high assembly rate, energy conservation, environmental protection, meeting the requirements of green building development and the like.
Drawings
Fig. 1 is a three-dimensional view of an anchor bar.
Fig. 2 is a three-dimensional view of a steel plate with U-shaped grooves.
Fig. 3 is a three-dimensional view of a pre-buried U-shaped steel plate groove.
Fig. 4 is a three-dimensional view of the reinforcing bar sleeve.
Fig. 5 is a three-dimensional view of the placement of reinforcement within the precast bottom and middle concrete columns.
FIG. 6 is a three-dimensional view of the pre-buried U-shaped steel plate groove and the steel bars in the bottom layer and the middle layer concrete columns after binding.
Fig. 7 is a three-dimensional view of a prefabricated bottom/middle layer concrete column (respectively, a prefabricated bottom column or a prefabricated middle column) with a pre-buried U-shaped steel plate groove.
Fig. 8 is a three-dimensional view of the placement of reinforcement within a precast top concrete column.
Fig. 9 is a three-dimensional view of the embedded U-shaped steel plate groove and the steel bars in the top concrete column after binding.
Fig. 10 is a three-dimensional view of a prefabricated top concrete column (simply called prefabricated top column) with pre-buried U-shaped steel plate slots.
Fig. 11 is a three-dimensional view of the placement of rebars within a precast concrete shear wall.
FIG. 12 is a three-dimensional view of the pre-buried U-shaped steel plate groove and the steel bars in the shear wall after binding.
Fig. 13 is a three-dimensional view of a precast concrete shear wall with pre-buried U-shaped steel plate grooves (simply called precast wall).
Fig. 14 is a three-dimensional view of the arrangement of the reinforcing bars within the precast concrete frame beams.
Fig. 15 is a three-dimensional view of the embedded U-shaped steel plate groove and the steel bars in the middle layer concrete frame beam after binding.
Fig. 16 is a three-dimensional view of a prefabricated middle layer concrete frame beam (simply called prefabricated middle layer beam) with a pre-buried U-shaped steel plate groove.
Fig. 17 is a three-dimensional view of the embedded U-shaped steel plate groove after binding the steel bars in the top layer concrete frame beam.
Fig. 18 is a three-dimensional view of a prefabricated top concrete frame beam (simply called prefabricated top beam) with a pre-buried U-shaped steel plate groove.
Fig. 19 is a three-dimensional view of a bolt.
Fig. 20 is a three-dimensional view of the nut.
Fig. 21 is a three-dimensional view of a U-shaped steel plate perforated at the bottom.
Fig. 22 is a three-dimensional view of a U-shaped steel plate key.
Fig. 23 is a view of a cast-in-place concrete foundation Liang Sanwei with pre-buried U-shaped steel plate slots.
Fig. 24 is a three-dimensional view of the hoisting process of the precast bottom layer column and the cast-in-situ concrete foundation beam.
FIG. 25 is a three-dimensional view of the connection of a precast bottom column to a cast-in-place concrete foundation beam.
Fig. 26 is a three-dimensional view of the U-shaped steel plate key mounted to the upper surface of the cast-in-place concrete foundation beam.
Fig. 27 is a three-dimensional view of the prefabricated wall being hoisted to fig. 26.
Fig. 28 is a three-dimensional view of the completion of the installation of the U-shaped steel plate key of fig. 27.
Fig. 29 is a three-dimensional view of the prefabricated middle layer beam being hoisted to the process of fig. 28.
Fig. 30 is a three-dimensional view of the prefabricated center sill lifted from fig. 28.
Fig. 31 is a three-dimensional view of the U-shaped steel plate key mounted in fig. 30.
FIG. 32 is a three-dimensional view of the assembled concrete frame-shear wall with U-shaped steel plate keys when assembled.
FIG. 33 is a three-dimensional view of the fabricated concrete frame-shear wall with U-shaped steel plate keys after grouting is completed.
In the figure, 1 anchoring rebar; 2 a steel plate with grooves; 3, a sleeve; 4, prefabricating a bottom column or prefabricating a middle column longitudinal stress steel bar; 5 column stirrups; 6, prefabricating longitudinal stress steel bars of the top column; 7, longitudinal stress ribs of the shear wall; 8, distributing ribs transversely on the shear wall; 9, restraining edge member stirrups by the shear wall; 10 shear wall lacing wires; 11 negative moment ribs of the frame beam surface; 12 positive bending moment steel bars of the frame; 13 frame beam stirrups; 14 beam column joint stirrups; 15 polyvinyl chloride pipe; 16 bolts; a 17 nut; 18. u-shaped steel plates; 19 round holes; 20 a foundation top; the top of the foundation 21 extends out of the steel bar; 22 grouting.
Detailed Description
As shown in fig. 1 to 26, the connecting structure and the assembling method of the assembled concrete frame-shear wall with the U-shaped steel plate key mainly comprise the following steps: the prefabricated bottom layer column or the prefabricated middle layer column (figure 7), the prefabricated top layer column (figure 10), the prefabricated wall (figure 13), the prefabricated middle layer beam (figure 16), the prefabricated top layer beam (figure 18) and the cast-in-situ concrete foundation beam are connected through the embedded U-shaped steel plate grooves and the U-shaped steel plate keys (figure 22), two ends of the cast-in-situ concrete foundation beam are connected with the prefabricated bottom layer column through the extending steel bars 21 at the top of the foundation on the top 20, the top of the prefabricated bottom layer column is connected with the prefabricated middle layer beam through the longitudinal stress steel bars 4 of the prefabricated bottom layer column, the prefabricated wall is arranged among the cast-in-situ concrete foundation beam, the prefabricated bottom layer column and the prefabricated middle layer beam, and the prefabricated wall is connected with the cast-in-situ concrete foundation beam, the prefabricated bottom layer column and the prefabricated middle layer beam in a matched manner through the embedded U-shaped steel plate grooves and the U-shaped steel plate keys; the two ends of the prefabricated middle layer beam are connected with the prefabricated middle layer beam through longitudinal stress steel bars 4 of the prefabricated bottom layer beam, the top end of the prefabricated middle layer beam is connected with the prefabricated top layer beam through longitudinal stress steel bars 6 of the prefabricated top layer beam, prefabricated walls are arranged among the prefabricated middle layer beam, the prefabricated middle layer beam and the prefabricated top layer beam, and the prefabricated walls are connected with the prefabricated middle layer beam, the prefabricated middle layer beam and the prefabricated top layer beam in a matched mode through pre-buried U-shaped steel plate grooves and U-shaped steel plate keys.
(1) As shown in fig. 1-3, the specific structure and the manufacturing process of the embedded U-shaped steel plate groove are as follows:
the embedded U-shaped steel plate groove (figure 3) consists of an anchor steel bar 1 and a grooved steel plate 2, wherein a groove is formed in one side of the grooved steel plate 2, and the anchor steel bar 1 is arranged on the other side of the grooved steel plate 2; the grooves are arranged in parallel, the anchoring steel bars 1 are arranged in parallel, and each group of the anchoring steel bars 1 is arranged in parallel.
The number of the anchoring steel bars 1 is calculated and determined according to the shearing force transmitted between the prefabricated components connected with the anchoring steel bars, and the anchoring steel bars 1 are uniformly distributed on the grooved steel plate 2;
the width of the steel plate 2 with the grooves is required to be smaller than the widths of the precast concrete frame beams, the precast concrete columns and the precast concrete shear walls, and the small size is larger than or equal to the thickness of a protective layer required by the steel plate specified in the specification so as to meet the requirements of grouting and preventing the corrosion of the connecting steel plate;
other geometric dimensions of the fluted steel sheet 2 are determined according to the calculation of the shear forces transmitted between the prefabricated components to which it is connected;
the manufacturing process is that the anchoring steel bar 1 is firmly welded on the steel plate 2 with the grooves.
(2) As shown in fig. 4 to 10, the specific structure and the manufacturing process of the prefabricated bottom layer column, the prefabricated middle layer column and the prefabricated top layer column are as follows:
the prefabricated bottom layer column or the prefabricated middle layer column (figure 7) consists of steel bars (figure 5) in the column, pre-buried U-shaped steel plate grooves (figure 3) and concrete, the anchoring steel bars 1 of the pre-buried U-shaped steel plate grooves extend into the steel bars in the column, the grooves of the pre-buried U-shaped steel plate grooves are outwards, and the concrete is poured outside the steel bars in the column.
The reinforcing steel bars in the column consist of a prefabricated bottom column or a prefabricated middle column longitudinal stress reinforcing steel bar 4, column hoop ribs 5 and a sleeve 3, wherein the lower end of the prefabricated bottom column or the prefabricated middle column longitudinal stress reinforcing steel bar 4 is inserted into the sleeve 3, and column hoop ribs 5 are arranged on the outer side of the prefabricated bottom column or the prefabricated middle column longitudinal stress reinforcing steel bar 4. The manufacturing process is as follows: firstly, inserting the lower end of a longitudinal stressed steel bar 4 of a prefabricated bottom layer column or a prefabricated middle layer column into a sleeve 3, and binding column stirrups 5 to complete the arrangement of the steel bars in the prefabricated bottom layer column or the prefabricated middle layer column.
The upper end of the column longitudinal stress steel bar 4 is reserved with a part, and the length of the reserved part is the sum of the height of the prefabricated middle layer beam and half of the length of the sleeve.
Binding the embedded U-shaped steel plate grooves (figure 3) on the column hoop ribs 5, determining the number of the embedded U-shaped steel plate grooves according to the shear force calculation required to be transmitted between the prefabricated wall (figure 13) and the prefabricated bottom layer column or the prefabricated middle layer column (figure 7), and uniformly distributing along the column height.
And (3) supporting the template outside the steel bars (figure 5) in the column, wherein one side of the pre-buried U-shaped steel plate groove (figure 3) is upwards, then pouring concrete in the template to the lower surface of the pre-buried U-shaped steel plate groove (figure 3), and dismantling the template after the concrete is solidified to finish the manufacture of the prefabricated bottom layer column or the prefabricated middle layer column (figure 7).
As shown in fig. 8 to 10, the prefabricated top layer column consists of steel bars (fig. 5) in the column, pre-buried U-shaped steel plate grooves (fig. 3) and concrete, the anchoring steel bars 1 of the pre-buried U-shaped steel plate grooves extend into the steel bars in the column, the grooves of the pre-buried U-shaped steel plate grooves are outwards, and the concrete is poured outside the steel bars in the column. The reinforcing steel bars in the column consist of prefabricated top column longitudinal stress reinforcing steel bars 6, column hoop reinforcing steel bars 5 and sleeves 3, the lower ends of the prefabricated top column longitudinal stress reinforcing steel bars 6 are inserted into the sleeves 3, and column hoop reinforcing steel bars 5 are arranged on the outer sides of the prefabricated bottom column or the prefabricated middle column longitudinal stress reinforcing steel bars 4. The manufacturing process is as follows: firstly, the lower ends of longitudinal stress steel bars 6 of the prefabricated top-layer column are inserted into the sleeve 3, and then column stirrups 5 are bound, so that the arrangement of the steel bars in the prefabricated top-layer column is completed.
The structure and the manufacturing process of the prefabricated top layer column (figure 10) are the same as those of the prefabricated bottom layer column or the prefabricated middle layer column, and the reserved length of the upper end of the longitudinal stress steel bar 6 of the prefabricated top layer column is only smaller than that of the upper end of the longitudinal stress steel bar of the prefabricated bottom layer column or the prefabricated middle layer column, and the length of the reserved part is the height of the prefabricated top layer beam.
(3) As shown in fig. 11 to 13, the concrete structure and the manufacturing process of the prefabricated wall are as follows:
the prefabricated wall comprises steel bars in the prefabricated wall, pre-buried U-shaped steel plate grooves and concrete, the anchoring steel bars 1 of the pre-buried U-shaped steel plate grooves extend into the steel bars in the prefabricated wall, grooves of the pre-buried U-shaped steel plate grooves are outwards, and the concrete is poured on the outer sides of the steel bars in the prefabricated wall.
The steel bars in the prefabricated wall comprise shear wall longitudinal stress bars 7, shear wall transverse distribution bars 8, shear wall constraint edge component stirrups 9 and shear wall lacing wires 10, two rows of shear wall longitudinal stress bars 7 are arranged in parallel, each row of shear wall longitudinal stress bars 7 are uniformly distributed and are connected through the parallel arranged shear wall transverse distribution bars 8, edges of the two rows of shear wall longitudinal stress bars 7 are connected through the parallel arranged shear wall constraint edge component stirrups 9, and the two rows of relatively parallel shear wall longitudinal stress bars 7 are connected through the shear wall lacing wires 10. The manufacturing process is as follows: firstly binding a longitudinal stress rib 7 of a shear wall and a binding edge member stirrup 9 of the shear wall to form a binding edge member reinforcing bar; then binding the longitudinal distribution steel bars 7 of the rest shear walls and the transverse distribution steel bars 8 of the shear walls; and finally binding the shear wall lacing wires 10 to form the steel bars in the prefabricated wall.
Binding pre-buried U-shaped steel plate grooves (figure 3) on the hooping 9 and the upper end face and the lower end face of the constraint edge component of the side shear wall of the prefabricated wall, wherein the number and the distribution of the side pre-buried U-shaped steel plate grooves are the same as those of the prefabricated bottom layer column or the prefabricated middle layer column (figure 7). The number of the pre-buried U-shaped steel plate grooves on the upper end surface and the lower end surface is determined according to the shear force transmitted between the prefabricated wall and the prefabricated beam, and the U-shaped steel plate grooves are uniformly distributed.
And (3) externally supporting the template by using the steel reinforcement framework in the prefabricated wall, pouring concrete, and dismantling the template after the concrete is solidified to finish the manufacturing of the prefabricated wall (figure 13).
(4) The specific structure and fabrication process of the prefabricated middle and top beams are shown in fig. 14-18.
The prefabricated middle layer beam consists of steel bars in the prefabricated middle layer beam, an embedded U-shaped steel plate groove and concrete, wherein the anchoring steel bars 1 of the embedded U-shaped steel plate groove extend into the steel bars in the prefabricated middle layer beam, the grooves of the embedded U-shaped steel plate groove are outwards, and the concrete is poured outside the steel bars in the prefabricated middle layer beam.
The steel bars in the prefabricated middle layer beam (figure 16) comprise frame beam surface hogging moment steel bars 11, frame positive moment steel bars 12, frame beam stirrups 13, beam column node stirrups 14 and polyvinyl chloride pipes 15, the frame beam surface hogging moment steel bars 11 and the frame positive moment steel bars 12 are oppositely arranged up and down, the outer sides of the frame beam surface hogging moment steel bars 11 and the frame positive moment steel bars 12 are connected through the frame beam stirrups 13 which are arranged in parallel, the polyvinyl chloride pipes 15 are oppositely arranged on two sides of the edges of the frame beam surface hogging moment steel bars 11 and the frame positive moment steel bars 12, and the oppositely arranged polyvinyl chloride pipes 15 are connected through the beam column node stirrups 14. The manufacturing process is as follows: firstly binding a frame beam surface hogging moment steel bar 11 and a frame positive bending moment steel bar 12 on a frame beam stirrup 13; then binding a polyvinyl chloride pipe 15 by adopting beam column joint stirrups 14, wherein the center of the polyvinyl chloride pipe 15 is the same as the center of the longitudinal stress steel bar 4 of the prefabricated bottom column or the prefabricated middle column, and the diameter of the polyvinyl chloride pipe 15 is 1-2cm greater than the diameter of the longitudinal stress steel bar 4 of the column; and finally binding the beam column joint stirrup 14 and the polyvinyl chloride pipe 15 on the frame beam surface hogging moment bar 11 and the frame positive bending moment bar 12.
Binding the pre-buried U-shaped steel plate grooves (figure 3) on the steel bars in the prefabricated middle layer beam (figure 13), wherein the number and the distribution of the pre-buried U-shaped steel plate grooves are the same as those of the end face of the prefabricated wall.
And (3) pouring concrete on the outer support template of the reinforcement cage of the prefabricated middle-layer beam, and removing the template after the concrete is solidified to finish the manufacturing of the prefabricated middle-layer beam (figure 16).
As shown in fig. 17 to 18, the prefabricated top layer beam is composed of steel bars in the prefabricated top layer beam, pre-buried U-shaped steel plate grooves and concrete, anchoring steel bars 1 of the pre-buried U-shaped steel plate grooves extend into the steel bars in the prefabricated top layer beam, grooves of the pre-buried U-shaped steel plate grooves are outwards, and concrete is poured outside the steel bars in the prefabricated top layer beam.
The steel bars in the prefabricated top-layer beam (figure 18) comprise frame beam surface hogging moment steel bars 11, frame positive moment steel bars 12, frame beam stirrups 13, beam column node stirrups 14 and polyvinyl chloride pipes 15, the frame beam surface hogging moment steel bars 11 and the frame positive moment steel bars 12 are oppositely arranged up and down, the outer sides of the frame beam surface hogging moment steel bars 11 and the frame positive moment steel bars 12 are connected through the frame beam stirrups 13 which are arranged in parallel, the polyvinyl chloride pipes 15 are oppositely arranged on two sides of the edges of the frame beam surface hogging moment steel bars 11 and the frame positive moment steel bars 12, and the oppositely arranged polyvinyl chloride pipes 15 are connected through the beam column node stirrups 14. The manufacturing process of the prefabricated top layer beam is the same as that of the prefabricated middle layer beam, and the difference is that the prefabricated top layer beam is provided with an embedded U-shaped steel plate groove at the bottom side.
(5) The specific structure and support procedure of the U-shaped steel plate key are shown in fig. 19-22.
The U-shaped steel plate key comprises a bolt 16, a nut 17 and a U-shaped steel plate 18, the bolt 16 and the nut 17 which are matched with each other are arranged on the inner side of the U-shaped steel plate 18, two ends of the bolt and the nut are in contact with the U-shaped steel plate 18, a round hole 19 is formed in the bottom of the U-shaped steel plate 18, and when grouting is carried out, grouting materials can flow to other positions through the round hole.
The bolts 16 and nuts 17 can be screwed in reverse rotation along the bolts 16, and when assembled, the bolts 16 and nuts 17 assembled together in advance are placed in the U-shaped steel plates 18, and the side walls of the U-shaped steel plates 18 are expanded outward by reverse screwing to be in close contact with the embedded U-shaped steel plate grooves (fig. 3).
The prefabricated components are prefabricated in a factory, then transported to a construction site for assembly, and the concrete hoisting process is as follows:
(1) The assembly process of the prefabricated bottom layer column (figure 7) and the cast-in-situ concrete foundation beam (figure 23) with the embedded U-shaped steel plate groove is shown in figures 23-25.
Fig. 23 shows a cast-in-situ concrete foundation beam with pre-buried U-shaped steel plate grooves, which is manufactured in the same way as a general cast-in-situ foundation beam, and only has pre-buried U-shaped steel plate grooves (fig. 3) on the upper side thereof, the beam end is a foundation top 20, and the foundation top extension bars 21 are arranged in the foundation top 20.
As shown in fig. 24, when in hoisting, the prefabricated bottom layer column (fig. 7) is hoisted at the top 20 of the foundation, and the extension steel bars 21 at the top of the foundation are ensured to be inserted into the sleeve 3 at the bottom of the prefabricated bottom layer column (fig. 7), and then the sleeve 3 is grouted, so that the assembly of the prefabricated bottom layer column (fig. 7) and the cast-in-situ concrete foundation beam (fig. 23) with the embedded U-shaped steel plate groove is completed, as shown in fig. 25.
(2) Hoisting of prefabricated walls (fig. 13) as shown in fig. 26-28.
As shown in fig. 26, the U-shaped steel plate key is firstly arranged in the U-shaped steel plate groove on the cast-in-situ concrete foundation beam with the pre-buried U-shaped steel plate groove; as shown in fig. 27, then hoisting the prefabricated wall (fig. 7) above the cast-in-situ concrete foundation beam, and ensuring that the embedded U-shaped steel plate groove at the lower side of the prefabricated wall is in close contact with the U-shaped steel plate key; finally, installing a U-shaped steel plate key between the prefabricated wall (figure 7) and the prefabricated bottom column (figure 13) to complete the assembly of the prefabricated wall, as shown in figure 28.
(3) Hoisting of the prefabricated middle layer beam (fig. 16) is shown in fig. 29-31.
Hoisting the prefabricated middle layer beam (figure 16) on the top end of the prefabricated bottom layer column (figure 7) as shown in figure 29; and ensures that the longitudinal stress steel bars 4 of the prefabricated bottom layer column correspond to the polyvinyl chloride pipe 15 in the core node area of the prefabricated middle layer beam, and grouting material is injected into the polyvinyl chloride pipe 15, as shown in figure 30; and installing a U-shaped steel plate key between the prefabricated middle layer beam and the prefabricated wall to finish the hoisting of the prefabricated middle layer beam (figure 16), as shown in figure 31.
(4) The above process is repeated to complete the hoisting of other layers including the top layer prefabricated elements, as shown in fig. 32.
(5) And the strip-shaped templates are supported at the joints of the U-shaped steel plate keys on each layer, and the strip-shaped templates are tightly connected with the precast concrete beams, columns and shear walls through glass cement or other materials. Grouting material 22 is poured into the strip-shaped template until the grouting material fills the gaps of the U-shaped steel plate keys in the strip-shaped template. After the grouting material is solidified, the strip-shaped template is removed, and the connection of the precast beam, the column and the shear wall is completed, as shown in fig. 33.
The result shows that the splicing connection structure and the splicing connection method can realize the force transmission of pressure and shearing force between the prefabricated components, and have the advantages of clear and reliable force transmission path, simple splicing, easy guarantee of construction quality and the like.
Claims (6)
1. The utility model provides an assembled frame cuts structure steel sheet keyway connection structure, its characterized in that, this structure includes: the prefabricated bottom layer column or the prefabricated middle layer column, the prefabricated top layer column, the prefabricated wall, the prefabricated middle layer beam, the prefabricated top layer beam, the cast-in-situ concrete foundation beam and the embedded U-shaped steel plate grooves and U-shaped steel plate keys for connecting the components, wherein two ends of the cast-in-situ concrete foundation beam are connected with the prefabricated bottom layer column through the extending reinforcing steel bars at the top of the foundation, the top end of the prefabricated bottom layer column is connected with the prefabricated middle layer beam through the longitudinal stress reinforcing steel bars of the prefabricated bottom layer column, the prefabricated wall is arranged among the cast-in-situ concrete foundation beam, the prefabricated bottom layer column and the prefabricated middle layer beam, and the prefabricated wall is connected with the cast-in-situ concrete foundation beam, the prefabricated bottom layer column and the cast-in-situ concrete foundation beam in a matched manner through the embedded U-shaped steel plate grooves and the U-shaped steel plate keys; the two ends of the prefabricated middle layer beam are connected with the prefabricated middle layer beam through longitudinal stress steel bars of the prefabricated bottom layer beam, the top end of the prefabricated middle layer beam is connected with the prefabricated top layer beam through longitudinal stress steel bars of the prefabricated top layer beam, prefabricated walls are arranged among the prefabricated middle layer beam, the prefabricated middle layer beam and the prefabricated top layer beam, and the prefabricated walls are connected with the prefabricated middle layer beam, the prefabricated middle layer beam and the prefabricated top layer beam in a matched mode through pre-buried U-shaped steel plate grooves and U-shaped steel plate keys;
the U-shaped steel plate key consists of a bolt, a nut and a U-shaped steel plate, wherein the bolt and the nut which are matched with each other are arranged on the inner side of the U-shaped steel plate, two ends of the bolt and the nut are in contact with the U-shaped steel plate in a propping way, and a round hole is formed in the bottom of the U-shaped steel plate; the bolts and the nuts can be screwed along the reverse rotation of the bolts, and when the bolts and the nuts are assembled, the bolts and the nuts which are assembled together in advance are placed in the U-shaped steel plate, and the side walls of the U-shaped steel plate are outwards expanded and are tightly contacted with the embedded U-shaped steel plate groove through reverse screwing;
the assembling method of the key slot connecting structure of the steel plate of the assembled frame shear structure comprises the steps of transporting prefabricated components to a construction site for assembly after the prefabricated components are prefabricated in a factory, and specifically hoisting the prefabricated components as follows:
(1) Assembling process of prefabricated bottom column and cast-in-situ concrete foundation beam with embedded U-shaped steel plate groove
The cast-in-situ concrete foundation beam with the embedded U-shaped steel plate groove is identical to the common cast-in-situ foundation beam in manufacturing method, the embedded U-shaped steel plate groove is arranged at the upper side of the cast-in-situ concrete foundation beam, the beam end is taken as the foundation top, and the foundation top is internally provided with a foundation top extension bar;
when in hoisting, hoisting the prefabricated bottom layer column on the top of the foundation, ensuring that the steel bars extending out of the top of the foundation are inserted into the sleeve at the bottom of the prefabricated bottom layer column, and then grouting in the sleeve to complete the assembly of the prefabricated bottom layer column and the cast-in-situ concrete foundation beam with the embedded U-shaped steel plate groove;
(2) Hoisting of prefabricated wall
Firstly, arranging U-shaped steel plate keys in U-shaped steel plate grooves on a cast-in-situ concrete foundation beam with pre-buried U-shaped steel plate grooves; then hoisting the prefabricated wall to the upper part of the cast-in-situ concrete foundation beam, and ensuring that the embedded U-shaped steel plate groove at the lower side of the prefabricated wall is in close contact with the U-shaped steel plate key; finally, installing a U-shaped steel plate key between the prefabricated wall and the prefabricated bottom column to complete the assembly of the prefabricated wall;
(3) Hoisting of prefabricated middle layer beam
Hoisting the prefabricated middle layer beam on the top end of the prefabricated bottom layer column, ensuring that longitudinal stress steel bars of the prefabricated bottom layer column correspond to the polyvinyl chloride pipe in the core node area of the prefabricated middle layer beam, and injecting grouting material into the polyvinyl chloride pipe; installing a U-shaped steel plate key between the prefabricated middle layer beam and the prefabricated wall to finish hoisting the prefabricated middle layer beam;
(4) Repeating the above process to finish hoisting of other layers including the top prefabricated part;
(5) The strip-shaped templates are supported at the joints of the U-shaped steel plate keys on each layer, and the strip-shaped templates are tightly connected with the precast concrete beams, the columns and the shear walls; pouring grouting material into the strip-shaped template until the grouting material fills the gaps of the U-shaped steel plate keys in the strip-shaped template; after the grouting material is solidified, removing the strip-shaped template to finish the connection of the precast beam, the column and the shear wall;
the embedded U-shaped steel plate groove consists of an anchoring steel bar and a grooved steel plate, wherein a groove is formed in one side of the grooved steel plate, and the anchoring steel bar is arranged on the other side of the grooved steel plate; the grooves are arranged in parallel, the anchoring bars are arranged in parallel, and each group of the anchoring bars is arranged in parallel.
2. The key slot connecting structure of the assembled frame shear structural steel plate according to claim 1, wherein the prefabricated bottom layer column or the prefabricated middle layer column consists of steel bars in the column, pre-buried U-shaped steel plate grooves and concrete, anchoring steel bars of the pre-buried U-shaped steel plate grooves extend into the steel bars in the column, grooves of the pre-buried U-shaped steel plate grooves are outwards, and concrete is poured outside the steel bars in the column; the steel bar in the column consists of a prefabricated bottom column or a prefabricated middle column longitudinal stress steel bar, column stirrups and a sleeve, wherein the lower end of the prefabricated bottom column or the prefabricated middle column longitudinal stress steel bar is inserted into the sleeve, and the column stirrups are arranged on the outer side of the prefabricated bottom column or the prefabricated middle column longitudinal stress steel bar.
3. The key slot connecting structure of the steel plate of the assembled frame shear structure according to claim 1, wherein the prefabricated top layer column consists of steel bars in the column, pre-buried U-shaped steel plate grooves and concrete, anchoring steel bars of the pre-buried U-shaped steel plate grooves extend into the steel bars in the column, grooves of the pre-buried U-shaped steel plate grooves face outwards, and concrete is poured outside the steel bars in the column; the reinforcing steel bars in the column consist of prefabricated top column longitudinal stress reinforcing steel bars, column stirrups and sleeves, the lower ends of the prefabricated top column longitudinal stress reinforcing steel bars are inserted into the sleeves, and the column stirrups are arranged on the outer sides of the prefabricated bottom column or the prefabricated middle column longitudinal stress reinforcing steel bars.
4. The key slot connecting structure of the steel plate of the assembled frame shear structure according to claim 1, wherein the prefabricated wall consists of steel bars in the prefabricated wall, pre-buried U-shaped steel plate grooves and concrete, anchor steel bars of the pre-buried U-shaped steel plate grooves extend into the steel bars in the prefabricated wall, grooves of the pre-buried U-shaped steel plate grooves are outwards, and the concrete is poured outside the steel bars in the prefabricated wall; the steel bars in the prefabricated wall comprise shear wall longitudinal stress bars, shear wall transverse distribution bars, shear wall constraint edge component stirrups and shear wall lacing wires, two rows of shear wall longitudinal stress bars are arranged in parallel, each row of shear wall longitudinal stress bars are uniformly distributed and are connected through the parallel arranged shear wall transverse distribution bars, edges of the two rows of shear wall longitudinal stress bars are connected through the parallel arranged shear wall constraint edge component stirrups, and the two rows of opposite parallel shear wall longitudinal stress bars are connected through the shear wall lacing wires.
5. The key slot connecting structure of the assembled frame shear structural steel plate according to claim 1, wherein the prefabricated middle layer beam consists of steel bars in the prefabricated middle layer beam, an embedded U-shaped steel plate groove and concrete, anchoring steel bars of the embedded U-shaped steel plate groove extend into the steel bars in the prefabricated middle layer beam, grooves of the embedded U-shaped steel plate groove are outwards, and concrete is poured outside the steel bars in the prefabricated middle layer beam; the steel bars in the prefabricated middle layer beam comprise frame beam surface hogging moment steel bars, frame positive moment steel bars, frame beam stirrups, beam column node stirrups and polyvinyl chloride pipes, wherein the frame beam surface hogging moment steel bars and the frame positive moment steel bars are oppositely arranged up and down, the outer sides of the frame beam surface hogging moment steel bars and the frame positive moment steel bars are connected through the frame beam stirrups which are arranged in parallel, the polyvinyl chloride pipes are oppositely arranged on two sides of the edges of the frame beam surface hogging moment steel bars and the frame positive moment steel bars, and the oppositely arranged polyvinyl chloride pipes are connected through the beam column node stirrups.
6. The key slot connecting structure of the assembled frame shear structure steel plate according to claim 1, wherein the prefabricated top layer beam consists of steel bars in the prefabricated top layer beam, an embedded U-shaped steel plate groove and concrete, wherein anchoring steel bars of the embedded U-shaped steel plate groove extend into the steel bars in the prefabricated top layer beam, grooves of the embedded U-shaped steel plate groove are outwards, and concrete is poured outside the steel bars in the prefabricated top layer beam; the steel bars in the prefabricated top layer beam comprise frame beam surface hogging moment steel bars, frame positive moment steel bars, frame beam stirrups, beam column node stirrups and polyvinyl chloride pipes, wherein the frame beam surface hogging moment steel bars and the frame positive moment steel bars are oppositely arranged up and down, the outer sides of the frame beam surface hogging moment steel bars and the frame positive moment steel bars are connected through the frame beam stirrups which are arranged in parallel, the polyvinyl chloride pipes are oppositely arranged on two sides of the edges of the frame beam surface hogging moment steel bars and the frame positive moment steel bars, and the oppositely arranged polyvinyl chloride pipes are connected through the beam column node stirrups.
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| CN108301534B (en) * | 2018-02-05 | 2023-12-01 | 新疆彦鑫建筑安装工程有限责任公司 | Clamping groove type shear wall horizontal connection structure, manufacturing method and construction method thereof |
| CN109680835B (en) * | 2019-02-15 | 2024-03-22 | 姚攀峰 | Self-supporting precast concrete wallboard, concrete wall, structural system and construction method |
| CN109680833B (en) * | 2019-02-15 | 2024-06-11 | 姚攀峰 | Self-supporting prefabricated steel reinforced concrete wall plate component, wall, structural system and manufacturing method |
| CN110700445A (en) * | 2019-10-22 | 2020-01-17 | 广州大学 | Assembly type shear wall with strong horizontal connection nodes |
| CN110700444A (en) * | 2019-10-22 | 2020-01-17 | 广州大学 | Assembled slotting energy-consuming shear wall with steel connecting nodes |
| CN112696023A (en) * | 2020-12-24 | 2021-04-23 | 中建四局第六建设有限公司 | Opening-free and formwork-free construction method for cast-in-place beam of assembled integral frame structure |
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