CN114737716A - Upper and lower connection structure of assembled shear wall building - Google Patents
Upper and lower connection structure of assembled shear wall building Download PDFInfo
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- CN114737716A CN114737716A CN202210330564.6A CN202210330564A CN114737716A CN 114737716 A CN114737716 A CN 114737716A CN 202210330564 A CN202210330564 A CN 202210330564A CN 114737716 A CN114737716 A CN 114737716A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 132
- 239000010959 steel Substances 0.000 claims abstract description 132
- 238000009434 installation Methods 0.000 claims abstract description 34
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 29
- 239000011440 grout Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 37
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 12
- 239000011324 bead Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 abstract description 5
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 36
- 210000001503 joint Anatomy 0.000 description 10
- 230000002787 reinforcement Effects 0.000 description 6
- 230000007704 transition Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 238000011065 in-situ storage Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
Abstract
The application discloses an upper-lower connecting structure of an assembly type shear wall building, which comprises an upper shear wall, a lower shear wall, a floor slab cast-in-place layer and a grouting layer, wherein the floor slab cast-in-place layer is positioned between the upper shear wall and the lower shear wall, the grouting layer is positioned between the floor slab cast-in-place layer and the upper shear wall, a plurality of vertical steel bars are fixedly arranged at the top of the lower shear wall, the upper ends of the vertical steel bars penetrate out of the floor slab cast-in-place layer, and a mounting sleeve is embedded at the lower part of the upper shear wall and used for inserting the vertical steel bars; the installation sleeve has opening hole down, and the hole includes from the main hole section, conical surface changeover portion and the location section of up arranging down in proper order, and the internal diameter of main hole section is greater than the outline diameter of vertical reinforcing bar, location section and vertical reinforcing bar clearance fit, and one side of going up the shear force wall is equipped with the grout inlet hole that is used for communicateing the telescopic hole of installation. Vertical reinforcing bar and the positioning section clearance fit of installation telescopic hole in this application are favorable to promoting the alignment degree between shear wall and the shear wall down.
Description
Technical Field
The application relates to the field of building technology, in particular to an upper and lower connecting structure of an assembly type shear wall building.
Background
The wall body of the building can be divided into a bearing wall and a shear wall according to the stress characteristics, and the shear wall is divided into a plane shear wall and a cylinder shear wall. The plane shear wall is used in reinforced concrete frame structure, plate lifting structure and flat slab system. In order to increase the rigidity, the strength and the collapse resistance of the structure, the fabricated reinforced concrete shear wall can be cast or prefabricated at certain positions. The building with the prefabricated reinforced concrete shear wall is a fabricated shear wall building.
Referring to fig. 1, the upper and lower connecting structure of the fabricated shear wall building comprises an upper shear wall 1, a lower shear wall 2, a floor surface layer 6, a grouting layer 5, a lateral plugging material 52, a floor cast-in-place layer 4 and a prefabricated floor 3. When the assembled shear wall building is connected up and down, the lower shear wall 2 and the prefabricated floor slab 3 are installed firstly, then the floor slab cast-in-place layer 4 is poured, the steel bars at the top of the lower shear wall 2 penetrate out of the floor slab cast-in-place layer 4, when the upper shear wall 1 is assembled, the steel bars at the top of the lower shear wall 2 are inserted into the installation sleeve 11 which is pre-fixed at the lower part of the upper shear wall 1, the upper shear wall 1 and the floor slab cast-in-place layer 4 are heightened through a plurality of gaskets 71 to form a grouting joint 51, when the up-and-down connection construction is carried out, the openings on the peripheral side of the grouting joint 51 are plugged by utilizing the lateral plugging materials 52, then high-strength grouting materials are poured into the grouting joint 51 through the installation sleeve 11, so that a grouting layer 5 for filling the grouting joint 51 is formed, and finally the floor slab surface layer 6 is poured above the cast-in-place layer.
In view of the above-mentioned related technologies, the inventor believes that when the upper shear wall is installed, the reinforcing steel bars at the top of the lower shear wall are inserted into the installation sleeve, so that the upper shear wall is positioned, and the upper shear wall and the lower shear wall can be aligned, but because the installation sleeve needs to be used for pouring high-strength grouting material, a certain gap needs to be kept between the inner wall of the installation sleeve and the reinforcing steel bars, that is, the inner diameter of the installation sleeve is larger than the diameter of the reinforcing steel bars at the top of the lower shear wall, and the inner diameter of the installation sleeve is larger than the diameter of the reinforcing steel bars, so that the coaxiality between the installation sleeve and the reinforcing steel bars is difficult to be ensured, and the alignment degree between the upper shear wall and the lower shear wall is affected.
Disclosure of Invention
In order to solve the alignment problem of the upper shear wall and the lower shear wall of the fabricated shear wall building in the connection process, the application provides a connection structure of the upper shear wall and the lower shear wall of the fabricated shear wall building.
The application provides a connection structure about assembled shear force wall building adopts following technical scheme:
an upper-lower connecting structure of an assembly type shear wall building comprises an upper shear wall, a lower shear wall, a floor slab cast-in-situ layer and a grouting layer, wherein the floor slab cast-in-situ layer is located between the upper shear wall and the lower shear wall, the grouting layer is located between the floor slab cast-in-situ layer and the upper shear wall, a plurality of vertical reinforcing steel bars are fixedly arranged at the top of the lower shear wall, the upper ends of the vertical reinforcing steel bars penetrate out of the floor slab cast-in-situ layer, and a mounting sleeve is embedded in the lower portion of the upper shear wall and used for inserting the vertical reinforcing steel bars; the installation sleeve has opening hole down, the hole includes from main hole section, conical surface changeover portion and the location section of up arranging down in proper order, the internal diameter of main hole section is greater than the outline diameter of vertical reinforcing bar, the location section with vertical reinforcing bar clearance fit, one side of going up the shear force wall is equipped with and is used for the intercommunication the thick liquid hole of advancing of installation sleeve's hole.
By adopting the technical scheme, when the upper shear wall is installed, the upper shear wall gradually moves from top to bottom to be close to the lower shear wall in a hoisting mode, the upper ends of the vertical steel bars at the top of the lower shear wall are inserted into the corresponding installation sleeves along with the gradual approach of the upper shear wall to the lower shear wall, and in the process of inserting the upper ends of the vertical steel bars into the inner holes of the installation sleeves, the upper ends of the vertical steel bars are inserted into the positioning sections after sequentially passing through the main hole section and the conical surface transition section, and the upper ends of the vertical steel bars are guided by the conical surface transition section in the process, so that the upper ends of the vertical steel bars smoothly enter the positioning sections, and the vertical steel bars are in clearance fit with the positioning sections, so that the vertical steel bars are better positioned after being inserted into the installation sleeves, and therefore, the alignment between the upper shear wall and the lower shear wall can be kept as much as possible, and the building quality can be further guaranteed; the diameter of the main hole section of the mounting sleeve is larger than the contour diameter of the vertical steel bar, when the upper shear wall is hoisted, the mounting sleeve can be easily sleeved into the vertical steel bar, and after the upper shear wall is hoisted, a certain gap is kept between the inner wall of the main hole section of the mounting sleeve and the outer peripheral surface of the vertical steel bar, so that the mounting sleeve can be used for grouting.
Optionally, a chamfer is formed between the inner peripheral wall of the main bore section and the lower end surface of the mounting sleeve.
By adopting the technical scheme, the vertical steel bars are guided by the chamfer angle in the process of being inserted into the mounting sleeve, so that the vertical steel bars are easier to be inserted into the mounting sleeve; in addition, when the high-strength grouting material is solidified, the chamfer angle is arranged, so that the material of the connecting part between the high-strength grouting material positioned on the grouting layer and the high-strength grouting material positioned in the mounting sleeve is increased, and the connecting part between the high-strength grouting material positioned on the grouting layer and the high-strength grouting material positioned in the mounting sleeve is not easy to break due to stress.
Optionally, an inner reinforcement is fixedly disposed on the inner side of the mounting sleeve, the inner reinforcement includes a plurality of bead rings axially arranged along the mounting sleeve, the diameter of each bead ring is smaller than the gap width between the vertical steel bar and the inner wall of the mounting sleeve, the bead rings and the mounting sleeve are coaxially arranged, the outer contours of the bead rings abut against the inner wall of the main hole section, the bead rings and the vertical steel bars are connected with a plurality of vertical steel wires together, the bead rings are fixedly connected with a plurality of guide steel wires, each guide steel wire gradually inclines upwards along the direction close to the center of the bead ring, and one end, away from the bead ring, of the guide steel wire abuts against the cylindrical surface of the vertical steel bar.
By adopting the technical scheme, when the high-strength grouting material injected into the mounting sleeve is solidified, the internal reinforcing member is wrapped, the internal reinforcing member has a supporting effect equivalent to that of a framework on the solidified high-strength grouting material, and the mounting sleeve is connected with the high-strength grouting material in the mounting sleeve through the internal reinforcing member, so that the connection between the solidified high-strength grouting material in the mounting sleeve and the upper shear wall is more stable; on the other hand, the direction steel wire has the guide effect to the vertical reinforcing bar of inserting in the installation sleeve, is favorable to making vertical reinforcing bar adjust to being close with the coaxial state of installation sleeve to make vertical reinforcing bar more easily insert the location section.
Optionally, a first arc section extends upwards from the upper end of the guide steel wire, and a curvature center of the first arc section is located on one side of the guide steel wire close to the inner wall of the mounting sleeve; the lower end of the guide steel wire extends to form a second circular arc section, the curvature center of the second circular arc section is overlapped with the central line of the steel wire ring, and the second circular arc section is welded and fixed with the guide steel wire in a peripheral surface contact mode.
By adopting the technical scheme, the contact state between the upper end of the guide steel wire and the surface of the vertical steel wire is smoother by arranging the first arc section, so that the upper shear wall is easy to move up and down for adjustment in the hoisting process; the guide steel wire is welded and fixed with the steel wire ring through the second arc section, so that the effective connection size between the guide steel wire and the steel wire ring is favorably improved, and the strong connection height between the guide steel wire and the steel wire ring is improved.
Optionally, the diameter of the vertical steel wire is the same as that of the steel wire ring, and a round angle is arranged at the upper end of the vertical steel bar; the radius of the fillet is greater than the diameter of the traveler.
By adopting the technical scheme, the vertical steel wires and the steel wire rings are arranged in an equal diameter mode, and the vertical steel wires have a guiding effect on the upper ends of the vertical steel bars, so that the situation that the upper ends of the vertical steel wires collide with the steel wire rings is favorably reduced; through setting up the fillet, make vertical reinforcing bar more easily insert the installation section of thick bamboo in, the radius of fillet is greater than the diameter of steel wire winding, and when the tip of vertical reinforcing bar touched the steel wire winding, formed the guide effect between fillet and the steel wire winding, reducible vertical reinforcing bar is to the effort of steel wire winding.
Optionally, a plurality of sets of gasket groups are arranged between the upper surface of the floor slab cast-in-place layer and the bottom surface of the upper shear wall, each gasket group is sequentially arranged along the length direction of the upper shear wall, the gasket groups are used for heightening the upper surface of the floor slab cast-in-place layer and the bottom surface of the upper shear wall to form a grouting seam, each gasket group comprises a plurality of stacked gaskets, each gasket is a metal piece, a dished bulge is arranged in the middle of each gasket, the inner concave surface of each dished bulge faces downwards, a lateral plugging material is arranged between the floor slab cast-in-place layer and the upper shear wall, and the lateral plugging material is used for sealing openings on the peripheral sides of the grouting seam.
The gasket group enables the upper shear wall and the floor cast-in-place layer to be heightened to form a grouting seam, flatness errors exist between the bottom surface of the upper shear wall and the upper surface of the floor cast-in-place layer inevitably, and the height size of the grouting seam along the length direction of the upper shear wall is different inevitably; on the other hand, the disc-shaped protruding part is arranged, so that the position between the upper and lower adjacent gaskets is stable, and the relative movement along the horizontal direction is not easy to occur.
Optionally, a through hole is formed in the bottom surface of the disc-shaped protruding portion, the diameter of the through hole is equal to the inner diameter of the smaller end of the disc-shaped protruding portion, and a notch is formed in the peripheral wall of the disc-shaped protruding portion.
By adopting the technical scheme, the diameter of the through hole is equal to the inner diameter of the smaller end of the disc-shaped bulge, namely the disc-shaped bulge only has the peripheral wall, so that when the gasket group is under the pressure action of the upper shear wall, the disc-shaped bulge of each gasket is easy to deform; the through holes of the gaskets of the same gasket group jointly form a channel, the upper end and the lower end of the channel are respectively subjected to the sealing action of the bottom surface of the upper shear wall and the upper surface of the cast-in-place layer of the floor slab, and the channel is communicated with the grouting seam by arranging the notch, so that high-strength grouting material can be injected into the channel through the notch, and the connecting action between the grouting layer and the gasket group is enhanced.
Optionally, the mounting sleeve is communicated with the grout inlet through the main hole section, and one side of the upper shear wall is provided with an exhaust hole which is used for being communicated with the positioning section of the mounting sleeve.
Through adopting above-mentioned technical scheme, grout material that excels in pours into grout joint into through the hole of entering grout hole and installation sleeve, and at this in-process, the air that originally occupied grout joint outwards discharges through the gap between vertical reinforcing bar and the location section and exhaust hole in proper order, makes the air in the grout joint comparatively easily discharge through setting up the exhaust hole to reduce the condition that forms the gas pocket in the grout blanket.
Optionally, the upper shear wall is provided with a plug head for plugging the exhaust hole, and the plug head is detachably connected with the exhaust hole.
Through adopting above-mentioned technical scheme, when the grout material that excels in fills gradually grout joint and the telescopic hole of installation, when the grout material spills over from the exhaust hole, utilize the chock plug to block up the exhaust hole, keep the grout pressurize state of a certain time again to do benefit to and make the grout material fill up the grout joint as far as possible.
Optionally, the upper shear wall is provided with a limiting part, the limiting part comprises a cross rod, the length of the cross rod is arranged along the length direction of the upper shear wall, the length of the cross rod is greater than the length of the upper shear wall, the cross rod is used for abutting against the plug head to be far away from the end face of the upper shear wall, two ends of the cross rod are respectively and fixedly connected with screw rods, the length direction of the screw rods is arranged along the thickness direction of the upper shear wall, the screw rods extend over the thickness surface of the upper shear wall, the screw rods are in threaded connection with nuts, and the nuts are used for clamping the upper shear wall together with the cross rod.
Through adopting above-mentioned technical scheme, when the nut screwed, shear force wall on the common centre gripping of nut and horizontal pole, the terminal surface of shear force wall one end was kept away from to horizontal pole butt chock plug to the exhaust hole is deviate from under the thrust of high strength grouting material to the hindrance chock plug.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the upper shear wall is installed, the vertical steel bars and the positioning sections form clearance fit, so that the vertical steel bars are well positioned after being inserted into the installation sleeve, alignment between the upper shear wall and the lower shear wall is kept as much as possible, and further the building quality is guaranteed;
2. when the high-strength grouting material injected into the mounting sleeve is solidified and wraps the internal reinforcing member, the mounting sleeve is connected with the high-strength grouting material in the mounting sleeve through the internal reinforcing member, so that the connection between the solidified high-strength grouting material in the mounting sleeve and the upper shear wall is firmer;
3. when the high-strength grouting material is gradually filled in the grouting joint and the inner hole of the mounting sleeve until the grouting material overflows from the exhaust hole, the exhaust hole is blocked by the plug head, and a grouting pressure maintaining state is maintained for a certain time, so that the grouting material can be filled in the grouting joint as far as possible.
Drawings
Fig. 1 is a sectional view of an upper and lower connection structure in the related art.
Fig. 2 is a sectional view of the entire structure of the present embodiment.
Fig. 3 is a partial enlarged view at a in fig. 2.
Fig. 4 is a schematic diagram for showing a state of separation of the upper shear wall and the lower shear wall according to the embodiment.
Fig. 5 is a partial enlarged view at B in fig. 4.
Fig. 6 is a schematic structural view of the internal reinforcing member of the present embodiment.
Description of the reference numerals: 1. an upper shear wall; 11. installing a sleeve; 111. an inner bore; 1111. a main bore section; 1112. a conical surface transition section; 1113. a positioning section; 112. chamfering; 12. a slurry inlet hole; 13. an exhaust hole; 2. a lower shear wall; 21. vertical reinforcing steel bars; 211. round corners; 3. prefabricating a floor slab; 4. a floor slab cast-in-place layer; 5. grouting layer; 51. grouting a seam; 52. laterally blocking; 6. a floor deck; 7. a gasket set; 71. a gasket; 711. a dished convex portion; 712. a through hole; 713. a notch; 8. an internal reinforcement; 81. a bead ring; 82. a vertical steel wire; 83. a guide wire; 831. a first arc segment; 832. a second arc segment; 9. a plug head; 91. a plug-in part; 92. a flange portion; 10. a limiting member; 101. a cross bar; 102. a screw; 103. and a nut.
Detailed Description
The present application is described in further detail below with reference to figures 2-6.
The embodiment of the application discloses connection structure about assembled shear force wall building. Referring to fig. 2, the upper and lower connecting structure of the fabricated shear wall building comprises an upper shear wall 1, a lower shear wall 2, a prefabricated floor slab 3 and a floor slab cast-in-place layer 4; the prefabricated floor slab 3 is fixedly arranged on the periphery of the upper part of the lower shear wall 2, and the floor slab cast-in-place layer 4 is poured on the upper surface of the prefabricated floor slab 3 and the top surface of the lower shear wall 2; the upper shear wall 1 is positioned above the floor cast-in-place layer 4, a grouting layer 5 is arranged between the upper shear wall and the floor cast-in-place layer 4, and a floor surface layer 6 is formed by pouring the upper surface of the floor cast-in-place layer 4.
Referring to fig. 3 and 4, four groups of vertical steel bars 21 are fixedly arranged at the top of the lower shear wall 2, the four groups of vertical steel bars 21 are sequentially arranged along the length direction of the lower shear wall 2, the number of each group of vertical steel bars 21 is two, and the two vertical steel bars 21 in the same group are arranged along the thickness direction of the lower shear wall 2 in a staggered manner; the lower part of the upper shear wall 1 is fixedly embedded with four groups of mounting sleeves 11 corresponding to the vertical steel bars 21, the mounting sleeves 11 are made of steel, the number of each group of mounting sleeves 11 is two, and the mounting sleeves 11 are respectively used for the corresponding insertion of the vertical steel bars 21.
The upper shear wall 1 is installed above a floor cast-in-place layer 4 in a hoisting mode, and the upper shear wall 1 and the lower shear wall 2 are positioned in an inserting connection mode through vertical steel bars 21 and installation sleeves 11.
Referring to fig. 3, the mounting sleeve 11 has an inner bore 111 with a downward opening, the inner bore 111 includes a main bore section 1111, a conical transition section 1112 and a positioning section 1113 arranged from bottom to top in sequence, and the diameter of the main bore section 1111 is larger than that of the positioning section 1113; a chamfer 112 is formed between the inner peripheral wall of the main hole section 1111 and the lower end face of the mounting sleeve 11, the inner diameter of the main hole section 1111 is larger than the outer contour diameter of the vertical steel bar 21, and the positioning section 1113 is in clearance fit with the vertical steel bar 21.
In-process that vertical reinforcing bar 21 and installation sleeve 11 were pegged graft, because the diameter of main hole section 1111 is greater than vertical reinforcing bar 21's outline diameter, and form chamfer 112 between the internal perisporium of main hole section 1111 and the lower terminal surface of installation sleeve 11, make vertical reinforcing bar 21 comparatively easily get into the main hole section 1111 of the hole 111 of installation sleeve 11, and receive the guide effect of conical surface changeover portion 1112 after vertical reinforcing bar 21 gets into main hole section 1111, make vertical reinforcing bar 21's upper end comparatively easily get into locating section 1113, vertical reinforcing bar 21's upper end and locating section 1113 clearance fit, be favorable to making to keep coaxial as far as possible between vertical reinforcing bar 21 and the installation sleeve 11, thereby be favorable to making and keep aliging between shear wall 1 and the lower shear wall 2.
Referring to fig. 2, 4 and 5, four sets of gasket groups 7 are arranged between the upper surface of the floor slab cast-in-place layer 4 and the bottom surface of the upper shear wall 1, the gasket groups 7 are arranged at equal intervals along the length direction of the upper shear wall 1, each gasket group 7 comprises a plurality of gaskets 71 which are stacked, each gasket 71 is made of steel, and each gasket group 7 is used for heightening the space between the upper surface of the floor slab cast-in-place layer 4 and the bottom surface of the upper shear wall 1 to form a grouting joint 51; and a lateral plugging material 52 is arranged between the floor slab cast-in-place layer 4 and the upper shear wall 1, and the lateral plugging material 52 is used for closing the opening on the peripheral side of the grouting seam 51.
Referring to fig. 2 and 3, one side of the upper shear wall 1 is provided with four slurry inlet holes 12, the slurry inlet holes 12 are arranged along the length direction of the upper shear wall 1, each slurry inlet hole 12 is respectively communicated with a group of mounting sleeves 11, and the mounting sleeves 11 are communicated with the slurry inlet holes 12 through a main hole section 1111; four exhaust holes 13 are formed in one side, away from the grout inlet hole 12, of the upper shear wall 1, the exhaust holes 13 are arranged along the length direction of the upper shear wall 1, each exhaust hole 13 is communicated with one group of mounting sleeves 11, and the mounting sleeves 11 are communicated with the exhaust holes 13 through positioning sections 1113.
High-strength grouting material is injected into the grouting seams 51 through the grouting holes 12 and the inner holes 111 of the mounting sleeve 11, and after the high-strength grouting material is solidified, the grouting seams 51 are filled with the grouting layer 5; during grouting of the grout joint 51, air in the grout joint 51 is discharged through the gap between the vertical steel bar 21 and the positioning segment 1113 and the exhaust hole 13.
Because the bottom surface of the upper shear wall 1 and the upper surface of the floor cast-in-place layer 4 have flatness errors inevitably, the height dimension of the grouting seam 51 has fluctuation inevitably, and in order to make each gasket group 7 contact with the bottom surface of the upper shear wall 1 as simultaneously as possible, the following settings are made (refer to fig. 5): the middle part of the gasket 71 is provided with a disc-shaped protruding part 711, the concave surface of the disc-shaped protruding part 711 faces downwards, the bottom surface of the disc-shaped protruding part 711 is provided with a through hole 712, the diameter of the through hole 712 is equal to the inner diameter of the smaller end of the disc-shaped protruding part 711, namely, the disc-shaped protruding part 711 only has a peripheral wall, and the peripheral wall of the disc-shaped protruding part 711 is provided with a notch 713. By providing the disc-shaped protrusion 711 having the notch 713 at the middle of the shim 71, the shim group 7 is more likely to deform in the thickness direction when pressed, which is advantageous for the shim groups 7 to abut against the bottom surface of the upper shear wall 1 as simultaneously as possible.
Referring to fig. 3 and 6, an inner reinforcement 8 is fixedly arranged on the inner side of the mounting sleeve 11, the inner reinforcement 8 includes three steel wire rings 81 arranged along the axial direction of the mounting sleeve 11, the diameter of each steel wire ring 81 is smaller than the gap width between the vertical steel bar 21 and the inner wall of the mounting sleeve 11, the steel wire rings 81 and the mounting sleeve 11 are coaxially arranged, the outer contour of each steel wire ring 81 abuts against the inner wall of the main hole section 1111, each steel wire ring 81 is commonly connected with a plurality of vertical steel wires 82, the inner reinforcement 8 is welded and fixed with the inner wall of the mounting sleeve 11 through the vertical steel wires 82, each steel wire ring 81 is provided with four guide steel wires 83 arrayed along the central circumference of the steel wire ring 81, each guide steel wire 83 gradually inclines upwards along the direction close to the center of the steel wire ring 81, and one end of each guide steel wire 83, which is far away from the steel wire ring 81, abuts against the cylindrical surface of the vertical steel bar 21.
Referring to fig. 6, a first arc segment 831 extends upward from the upper end of the guide steel wire 83, and the center of curvature of the first arc segment 831 is located on one side of the guide steel wire 83 close to the inner wall of the mounting sleeve 11; the upper end of the guide steel wire 83 contacts with the circumferential surface of the vertical steel bar 21 through the first arc 831, so that the upper shear wall 1 is easy to move up and down for adjustment in the hoisting process.
Referring to fig. 6, a second arc segment 832 extends from the lower end of the guide wire 83, the center of curvature of the second arc segment 832 is overlapped with the center line of the traveler 81, and the second arc segment 832 is welded and fixed to the guide wire 83 in a circumferential contact manner. Through setting up second circular arc section 832, make the effective connection length increase between guide wire 83 and the steel wire winding 81 to be favorable to ensureing the joint strength between guide wire 83 and the steel wire winding 81.
In order to reduce the collision of the upper end of the vertical steel bar 21 with the bead ring 81 after entering the inner side of the mounting sleeve 11, the following settings are made (refer to fig. 3): the upper end of the vertical steel bar 21 is provided with a round angle 211, the radius of the round angle 211 is larger than the diameter of the steel wire ring 81, when the end part of the vertical steel bar 21 touches the steel wire ring 81, the round angle 211 has a guiding function on the vertical steel bar 21, and the acting force of the upper end of the vertical steel bar 21 on the steel wire ring 81 can be reduced; in addition, the diameter of the vertical steel wire 82 is the same as that of the steel wire ring 81, so that the vertical steel wire 82 can guide the upper end of the vertical steel bar 21, and the situation that the vertical steel bar 21 collides with the steel wire ring 81 is further reduced.
Referring to fig. 3 and 4, the upper shear wall 1 is provided with four plugs 9 for plugging the vent holes 13, each plug 9 comprises a plug part 91 and a flange part 92, each plug 9 is inserted into each vent hole 13 through the plug part 91, the maximum diameter of each flange part 92 is larger than the aperture of each vent hole 13, and each plug 9 is detachably connected with each vent hole 13; go up shear wall 1 and be equipped with locating part 10, locating part 10 includes horizontal pole 101, the length of horizontal pole 101 sets up along the length direction of last shear wall 1, the length of horizontal pole 101 is greater than the length of last shear wall 1, horizontal pole 101 is used for butt chock plug 9 to keep away from the terminal surface of last shear wall 1, perpendicular fixedly connected with screw rod 102 respectively at the both ends of horizontal pole 101, the length direction of screw rod 102 sets up along the thickness direction of last shear wall 1, screw rod 102 extends the thickness face of crossing last shear wall 1, screw rod 102 threaded connection has nut 103, nut 103 is used for with horizontal pole 101 centre gripping go up shear wall 1 jointly.
In the initial stage of grouting the grout joint 51, the plug 9 is separated from the exhaust hole 13, when the high-strength grouting material gradually fills the grout joint 51 and the inner hole 111 of the mounting sleeve 11 until the grouting material overflows from the exhaust hole 13, the exhaust hole 13 is blocked by the plug 9, the position of the plug 9 is limited by the limiting part 10, and then the grouting pressure maintaining state is maintained for a certain time, so that the grouting material can fill the grout joint 51 as much as possible.
The implementation principle of the upper and lower connection structure of the assembly type shear wall building is as follows: when the upper shear wall 1 is installed, the upper shear wall 1 is installed in a hoisting mode, and as the upper shear wall 1 gradually approaches the lower shear wall 2, the upper ends of the vertical steel bars 21 are inserted into the corresponding installation sleeves 11; in the process of inserting the upper end of the vertical steel bar 21 into the inner hole 111 of the mounting sleeve 11, the upper end of the vertical steel bar 21 sequentially passes through the main hole section 1111 and the conical surface transition section 1112 and then is inserted into the positioning section 1113, and the upper end of the vertical steel bar 21 is guided by the conical surface transition section 1112 in the process, so that the upper end of the vertical steel bar 21 smoothly enters the positioning section 1113, the vertical steel bar 21 and the positioning section 1113 form clearance fit, and the vertical steel bar 21 is well positioned after being inserted into the mounting sleeve 11, so that the upper shear wall 1 and the lower shear wall 2 are kept aligned as much as possible, and further the building quality is guaranteed; in addition, a certain gap is kept between the inner wall of the main hole section 1111 of the mounting sleeve 11 and the outer peripheral surface of the vertical steel bar 21, so that the mounting sleeve 11 can be used for grouting.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An upper and lower connecting structure of an assembly type shear wall building comprises an upper shear wall (1), a lower shear wall (2), a floor slab cast-in-place layer (4) and a grouting layer (5), wherein the floor slab cast-in-place layer (4) is positioned between the upper shear wall (1) and the lower shear wall (2), the grouting layer (5) is positioned between the floor slab cast-in-place layer (4) and the upper shear wall (1), a plurality of vertical reinforcing steel bars (21) are fixedly arranged at the top of the lower shear wall (2), the upper ends of the vertical reinforcing steel bars (21) penetrate through the floor slab cast-in-place layer (4), an installation sleeve (11) is embedded at the lower part of the upper shear wall (1), and the vertical reinforcing steel bars (21) are inserted into the installation sleeve (11); the method is characterized in that: installation sleeve (11) have opening hole (111) down, hole (111) include from main hole section (1111), conical surface changeover portion (1112) and location section (1113) of up arranging down in proper order, the internal diameter of main hole section (1111) is greater than the outline diameter of vertical reinforcing bar (21), location section (1113) with vertical reinforcing bar (21) clearance fit, one side of going up shear wall (1) is equipped with and is used for the intercommunication grout inlet hole (12) of hole (111) of installation sleeve (11).
2. The upper and lower connection structure of an assembled shear wall building according to claim 1, wherein: a chamfer (112) is formed between the inner peripheral wall of the main hole section (1111) and the lower end surface of the mounting sleeve (11).
3. The upper and lower connecting structure of an assembled shear wall building according to claim 1, wherein: an inner reinforcing piece (8) is fixedly arranged on the inner side of the mounting sleeve (11), the inner reinforcing piece (8) comprises a plurality of steel wire rings (81) which are axially arranged along the mounting sleeve (11), the diameter of the steel wire ring (81) is smaller than the width of a gap between the vertical steel bar (21) and the inner wall of the mounting sleeve (11), the steel wire ring (81) and the mounting sleeve (11) are coaxially arranged, the outer contour of the steel wire ring (81) is abutted against the inner wall of the main hole section (1111), the steel wire rings (81) and the vertical steel bars (21) are connected with a plurality of vertical steel wires (82) together, the steel wire ring (81) is fixedly connected with a plurality of guide steel wires (83), each guide steel wire (83) gradually inclines upwards along the direction close to the center of the steel wire ring (81), one end of the guide steel wire (83) far away from the steel wire ring (81) is abutted against the cylindrical surface of the vertical steel bar (21).
4. The upper and lower connecting structure of an assembled shear wall building according to claim 3, wherein: a first arc section (831) extends upwards from the upper end of the guide steel wire (83), and the curvature center of the first arc section (831) is positioned on one side, close to the inner wall of the mounting sleeve (11), of the guide steel wire (83); a second arc section (832) extends from the lower end of the guide steel wire (83), the curvature center of the second arc section (832) is superposed with the central line of the bead ring (81), and the second arc section (832) is welded and fixed with the guide steel wire (83) in a circumferential contact mode.
5. The upper and lower connecting structure of an assembled shear wall building according to claim 3, wherein: the diameter of the vertical steel wire (82) is the same as that of the steel wire ring (81), and the upper end of the vertical steel bar (21) is provided with a round angle (211); the radius of the rounded corner (211) is greater than the diameter of the bead ring (81).
6. The upper and lower connection structure of an assembled shear wall building according to claim 1, wherein: the novel composite shear wall is characterized in that a plurality of groups of gasket groups (7) are arranged between the upper surface of the floor slab cast-in-place layer (4) and the bottom surface of the upper shear wall (1), each gasket group (7) is sequentially arranged along the length direction of the upper shear wall (1), each gasket group (7) is used for heightening the upper surface of the floor slab cast-in-place layer (4) and the bottom surface of the upper shear wall (1) to form a grouting seam (51), each gasket group (7) comprises a plurality of gaskets (71) which are stacked, each gasket (71) is a metal piece, a disc-shaped bulge (711) is arranged in the middle of each gasket (71), the concave surface of each disc-shaped bulge (711) is arranged downwards, a lateral blocking material (52) is arranged between the floor slab cast-in-place layer (4) and the upper shear wall (1), and each lateral blocking material (52) is used for closing the opening on the peripheral side of each grouting seam (51).
7. The upper and lower connection structure of an assembled shear wall building according to claim 6, wherein: the bottom surface of the disc-shaped protruding part (711) is provided with a through hole (712), the diameter of the through hole (712) is equal to the inner diameter of the smaller end of the disc-shaped protruding part (711), and the peripheral wall of the disc-shaped protruding part (711) is provided with a notch (713).
8. The upper and lower connection structure of an assembled shear wall building according to claim 1, wherein: installation sleeve (11) pass through main hole section (1111) intercommunication advance thick liquid hole (12), one side of going up shear wall (1) is equipped with exhaust hole (13), exhaust hole (13) are used for the intercommunication location section (1113) of installation sleeve (11).
9. The upper and lower connection structure of an assembled shear wall building according to claim 8, wherein: the upper shear wall (1) is provided with a plug head (9) used for plugging the exhaust hole (13), and the plug head (9) is detachably connected with the exhaust hole (13).
10. The upper and lower connection structure of an assembled shear wall building according to claim 9, wherein: go up shear force wall (1) and be equipped with locating part (10), locating part (10) include horizontal pole (101), the length of horizontal pole (101) is followed the length direction of going up shear force wall (1) sets up, the length of horizontal pole (101) is greater than the length of going up shear force wall (1), horizontal pole (101) are used for the butt chock plug (9) are kept away from the terminal surface of going up shear force wall (1), the both ends of horizontal pole (101) are perpendicular fixedly connected with screw rod (102) respectively, the length direction of screw rod (102) is followed the thickness direction of going up shear force wall (1) sets up, screw rod (102) extend and cross the thickness face of going up shear force wall (1), screw rod (102) threaded connection has nut (103), nut (103) be used for with horizontal pole (101) centre gripping jointly go up shear force wall (1).
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| CN114737716B (en) | 2024-01-19 |
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