CN114737716B - 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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- CN114737716B CN114737716B CN202210330564.6A CN202210330564A CN114737716B CN 114737716 B CN114737716 B CN 114737716B CN 202210330564 A CN202210330564 A CN 202210330564A CN 114737716 B CN114737716 B CN 114737716B
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 128
- 239000010959 steel Substances 0.000 claims abstract description 128
- 238000009434 installation Methods 0.000 claims abstract description 52
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 19
- 230000007704 transition Effects 0.000 claims abstract description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 38
- 239000011324 bead Substances 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 239000011440 grout Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 abstract description 29
- 238000010008 shearing Methods 0.000 abstract 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 35
- 230000002787 reinforcement Effects 0.000 description 10
- 125000006850 spacer group Chemical group 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000010276 construction 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
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The application discloses an upper and lower connection structure of an assembled shear wall building, which comprises an upper shear wall, a lower shear wall, a floor cast-in-situ layer and a grouting layer, wherein the floor cast-in-situ layer is positioned between the upper shear wall and the lower shear wall, the grouting layer is positioned between the floor cast-in-situ 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 cast-in-situ layer, and an installation sleeve is embedded at the lower part of the upper shear wall and is used for inserting the vertical steel bars; the installation sleeve is provided with an opening downward inner hole, the inner hole comprises a main hole section, a conical surface transition section and a positioning section which are sequentially arranged downwards and upwards, the inner diameter of the main hole section is larger than the outer contour diameter of the vertical reinforcing steel bar, the positioning section is in clearance fit with the vertical reinforcing steel bar, and one side of the upper shear wall is provided with a slurry inlet hole for communicating the inner hole of the installation sleeve. Vertical reinforcing bar and the location section clearance fit of installation telescopic hole in this application are favorable to promoting the alignment degree between shearing wall and the lower shearing wall.
Description
Technical Field
The application relates to the field of building technology, in particular to an upper and lower connecting structure of an assembled 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 planar shear wall is used in reinforced concrete frame structure, riser structure and flat slab system. In order to increase the rigidity, strength and collapse resistance of the structure, the reinforced concrete shear wall can be cast-in-situ or prefabricated at certain positions. The building with the prefabricated reinforced concrete shear wall is an assembled shear wall building.
Referring to fig. 1, the upper and lower connection 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-situ layer 4 and a precast floor slab 3. When the assembled shear wall building is connected up and down, the lower shear wall 2 and the precast floor slab 3 are firstly installed, then the floor slab cast-in-situ layer 4 is poured, steel bars at the top of the lower shear wall 2 penetrate out of the floor slab cast-in-situ 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 sleeves 11 which are pre-fixed at the lower part of the upper shear wall 1, grouting joints 51 are formed by heightening a plurality of gaskets 71 between the upper shear wall 1 and the floor slab cast-in-situ layer 4, when the upper and lower connection construction is carried out, the openings at the periphery of the grouting joints 51 are blocked by utilizing the lateral blocking materials 52, then high-strength grouting materials are poured into the grouting joints 51 through the installation sleeves 11, so that a grouting layer 5 for filling the grouting joints 51 is formed, and finally a floor slab surface layer 6 is poured above the cast-in-situ layer.
In view of the above related art, the inventor considers that when installing an upper shear wall, a reinforcing bar at the top of a lower shear wall is inserted into an installation sleeve, so that the upper shear wall is positioned, and the upper shear wall can be aligned with the lower shear wall, but since 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 bar, that is, the inner diameter of the installation sleeve is larger than the diameter of the reinforcing bar at the top of the lower shear wall, and the inner diameter of the installation sleeve is larger than the diameter of the reinforcing bar, the coaxiality between the installation sleeve and the reinforcing bar 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 in the process of connecting an upper shear wall and a lower shear wall of an assembled shear wall building, the application provides an upper and lower connecting structure of the assembled shear wall building.
The application provides a connection structure about assembled shear force wall building adopts following technical scheme:
the upper and lower connecting structure of the assembled shear wall building comprises an upper shear wall, a lower shear wall, a floor cast-in-situ layer and a grouting layer, wherein the floor cast-in-situ layer is positioned between the upper shear wall and the lower shear wall, the grouting layer is positioned between the floor cast-in-situ 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 cast-in-situ layer, and an installation sleeve is embedded at the lower part of the upper shear wall and is used for inserting the vertical steel bars; the installation sleeve is provided with an inner hole with a downward opening, the inner hole comprises a main hole section, a conical surface transition section and a positioning section which are sequentially arranged from bottom to top, the inner diameter of the main hole section is larger than the outer contour diameter of the vertical reinforcing steel bar, the positioning section is in clearance fit with the vertical reinforcing steel bar, and one side of the upper shear wall is provided with a slurry inlet hole used for communicating the inner hole of the installation sleeve.
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 manner, the upper ends of the vertical steel bars at the top of the lower shear wall are inserted into corresponding installation sleeves along with the gradual approach of the upper shear wall to the lower shear wall, the upper ends of the vertical steel bars are sequentially inserted into positioning sections after passing through main hole sections and conical surface transition sections in the process of inserting the upper ends of the vertical steel bars into inner holes of the installation sleeves, the upper ends of the vertical steel bars are guided by the conical surface transition sections during the process, so that the upper ends of the vertical steel bars smoothly enter the positioning sections, clearance fit is formed between the vertical steel bars and the positioning sections, and the vertical steel bars are better positioned after being inserted into the installation sleeves, so that the alignment between the upper shear wall and the lower shear wall is kept as much as possible, and the construction quality is guaranteed; the diameter of the main hole section of the mounting sleeve is larger than the outline diameter of the vertical steel bar, when the upper shear wall is lifted, the mounting sleeve can be sleeved into the vertical steel bar easily, and when the upper shear wall is lifted, 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 hole section and the lower end surface of the mounting sleeve.
By adopting the technical scheme, the vertical steel bars are guided by the chamfer angles in the process of being inserted into the installation sleeve, so that the vertical steel bars are easier to be inserted into the installation 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, the inside fixed internal reinforcement that is provided with of installation sleeve, the internal reinforcement includes a plurality of edges installation sleeve axial arrangement's bead, the bead the diameter be less than vertical reinforcing bar with clearance width between the installation sleeve inner wall, the bead with the installation sleeve is coaxial to be set up, the outer profile butt of bead the inner wall of main hole section, each the bead is connected with a plurality of vertical steel wires jointly, bead fixedly connected with a plurality of direction steel wires, each the direction steel wire is followed and is close to bead center's direction is upwards inclined gradually, the direction steel wire is kept away from the one end butt of bead vertical reinforcing bar's cylinder.
By adopting the technical scheme, after the high-strength grouting material injected into the installation sleeve is solidified, the inner reinforcement is wrapped, the inner reinforcement has a supporting function equivalent to a framework for the solidified high-strength grouting material, and the installation sleeve is connected with the high-strength grouting material in the installation sleeve through the inner reinforcement, so that the connection between the solidified high-strength grouting material in the installation sleeve and the upper shear wall is more stable; on the other hand, the guide steel wire has a guide effect on the vertical steel bar inserted into the installation sleeve, and is beneficial to enabling the vertical steel bar to be adjusted to be close to a state coaxial with the installation sleeve, so that the vertical steel bar is easier to insert into the positioning section.
Optionally, a first arc section extends upwards from the upper end of the guide steel wire, and the curvature center of the first arc section is located at one side of the guide steel wire, which is 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 coincides with the center line of the steel wire ring, and the second circular arc section and the guide steel wire are welded and fixed 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 lifting process of the upper shear wall is easy to carry out up-and-down movement adjustment; 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 improved, and the connection strength 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 bead ring, and the upper end of the vertical steel bar is provided with a round angle; the radius of the fillet is larger than the diameter of the bead ring.
By adopting the technical scheme, the vertical steel wire and the steel wire ring are arranged in equal diameter, and the vertical steel wire has a guiding function on the upper end of the vertical steel bar, so that the situation that the upper end of the vertical steel wire collides with the steel wire ring is reduced; through setting up the fillet, make vertical reinforcing bar more easily insert in the installation section of thick bamboo, the radius of fillet is greater than the diameter of bead ring, when the tip of vertical reinforcing bar touches the bead ring, forms guiding action between fillet and the bead ring, reducible vertical reinforcing bar to the effort of bead ring.
Optionally, a plurality of groups of gasket groups are arranged between the upper surface of the floor cast-in-situ 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, each gasket group is used for making a grouting seam formed by heightening between the upper surface of the floor cast-in-situ layer and the bottom surface of the upper shear wall, each gasket group comprises a plurality of stacked gaskets, each gasket is a metal piece, a dished protruding part is arranged at the middle part of each gasket, the concave surface of each dished protruding part is downward, a lateral plugging material is arranged between the floor cast-in-situ layer and the upper shear wall, and the lateral plugging material is used for sealing the peripheral side opening of the grouting seam.
The gasket group is formed by stacking a plurality of gaskets, the gaskets are metal pieces and have certain shaping and elasticity, and the middle parts of the gaskets are provided with dish-shaped protruding parts, so that the gasket group is easier to deform in the thickness direction when being pressed, and each gasket group is in contact with the bottom surface of the upper shear wall as much as possible simultaneously; on the other hand, through setting up dish bellying, can make the position between the upper and lower adjacent gasket comparatively stable, be difficult for appearing along the relative movement of horizontal direction.
Optionally, the bottom surface of dish bellying is equipped with the through-hole, the diameter of through-hole equals the internal diameter of the less one end of dish bellying, the perisporium of dish bellying is equipped with the breach.
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 protruding part, namely, the disc-shaped protruding part is only provided with a peripheral wall, so that when the gasket group is acted by the pressure of the upper shear wall, the disc-shaped protruding part of each gasket is easier 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 closed by the bottom surface of the upper shear wall and the upper surface of the cast-in-situ layer of the floor slab, and the channel is communicated with the grouting joint by arranging a notch, so that high-strength grouting material can be injected into the channel through the notch, and the connection effect between the grouting layer and the gasket group is enhanced.
Optionally, the installation sleeve is communicated with the slurry inlet through the main hole section, one side of the upper shear wall is provided with an exhaust hole, and the exhaust hole is used for being communicated with the positioning section of the installation sleeve.
Through adopting above-mentioned technical scheme, high strength grouting material is through advance the thick liquid hole and the hole injection grouting seam of installation sleeve, at this in-process, originally occupy the air of grouting seam and outwards discharge through gap and the exhaust hole between vertical reinforcing bar and the location section in proper order, makes the air in the grouting seam comparatively easily discharge through setting up the exhaust hole to reduce the condition that forms the gas pocket in the grouting layer.
Optionally, the upper shear wall is provided with a plug for plugging the exhaust hole, and the plug is detachably connected with the exhaust hole.
By adopting the technical scheme, when the high-strength grouting material gradually fills the grouting joint and the inner hole of the mounting sleeve until the grouting material overflows from the exhaust hole, the exhaust hole is plugged by the plug head, and then the grouting pressure-maintaining state is maintained for a certain time, so that the grouting material is beneficial to filling the grouting joint as much as possible.
Optionally, the upper shear wall is equipped with the locating part, the locating part includes the horizontal pole, the length of horizontal pole is followed the length direction setting of upper shear wall, the length of horizontal pole is greater than the length of upper shear wall, the horizontal pole is used for the butt the plug is kept away from the terminal surface of upper shear wall, the both ends of horizontal pole respectively perpendicular fixedly connected with screw rod, the length direction of screw rod is followed the thickness direction setting of upper shear wall, the screw rod extends and crosses the thickness face of upper shear wall, screw rod threaded connection has the nut, the nut be used for with the joint centre gripping of horizontal pole upper shear wall.
Through adopting above-mentioned technical scheme, when the nut was screwed, the shear force wall was gone up to nut and horizontal pole centre gripping jointly, and the terminal surface of last shear force wall one end was kept away from to horizontal pole butt chock plug to hinder the chock plug to deviate from the exhaust hole under the thrust of high-strength grouting material.
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 better positioned after being inserted into the installation sleeve, the upper shear wall and the lower shear wall can be kept aligned as much as possible, and the building quality can be guaranteed;
2. when the high-strength grouting material injected into the mounting sleeve is solidified, the inner reinforcing member is wrapped, and the mounting sleeve is connected with the high-strength grouting material positioned in the mounting sleeve through the inner 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;
3. when the high-strength grouting material gradually fills the grouting joint and the inner hole of the mounting sleeve until the grouting material overflows from the exhaust hole, the exhaust hole is plugged by the plug, and then the grouting pressure-maintaining state is maintained for a certain time, so that the grouting material is beneficial to filling the grouting joint as much as possible.
Drawings
Fig. 1 is a sectional view of an up-down connection structure in the related art.
Fig. 2 is a cross-sectional view of the overall structure of the present embodiment.
Fig. 3 is a partially enlarged view at a in fig. 2.
Fig. 4 is a schematic diagram of the embodiment for showing a separation state of the upper shear wall and the lower shear wall.
Fig. 5 is a partially enlarged view at B in fig. 4.
Fig. 6 is a schematic structural view of the inner reinforcement of the present embodiment.
Reference numerals illustrate: 1. an upper shear wall; 11. a mounting sleeve; 111. an inner bore; 1111. a main bore section; 1112. a conical surface transition section; 1113. a positioning section; 112. chamfering; 12. a pulp inlet hole; 13. an exhaust hole; 2. a lower shear wall; 21. vertical steel bars; 211. round corners; 3. prefabricating a floor slab; 4. a floor cast-in-situ layer; 5. a grouting layer; 51. grouting the seam; 52. lateral plugging material; 6. floor surface layer; 7. a gasket set; 71. a gasket; 711. a dish-shaped protruding portion; 712. a through hole; 713. a notch; 8. an inner reinforcement; 81. a bead ring; 82. a vertical steel wire; 83. guiding the steel 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 piece; 101. a cross bar; 102. a screw; 103. and (3) a nut.
Detailed Description
The present application is described in further detail below in conjunction with figures 2-6.
The embodiment of the application discloses an upper and lower connection structure of an assembled shear wall building. Referring to fig. 2, the upper and lower connection 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-situ layer 4; the precast floor slab 3 is fixedly arranged on the peripheral side of the upper part of the lower shear wall 2, and a floor slab cast-in-situ layer 4 is poured on the upper surface of the precast 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-situ layer 4, a grouting layer 5 is arranged between the upper shear wall 1 and the floor cast-in-situ layer 4, and the upper surface of the floor cast-in-situ layer 4 is poured to form a floor surface layer 6.
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 in a staggered manner along the thickness direction of the lower shear wall 2; 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 inserted with the vertical steel bars 21.
The upper shear wall 1 is arranged above the floor cast-in-situ 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 an installation sleeve 11.
Referring to fig. 3, the mounting sleeve 11 has an inner bore 111 with an opening facing downward, the inner bore 111 including a main bore section 1111, a tapered transition section 1112 and a positioning section 1113 arranged in this order from bottom to top, the diameter of the main bore section 1111 being larger than that of the positioning section 1113; chamfer 112 is formed between the inner peripheral wall of main hole section 1111 and the lower end surface of mounting sleeve 11, the inner diameter of main hole section 1111 is larger than the outer contour diameter of vertical steel bar 21, and positioning section 1113 is in clearance fit with vertical steel bar 21.
In the process of splicing the vertical steel bar 21 and the mounting sleeve 11, as the diameter of the main hole section 1111 is larger than the outer contour diameter of the vertical steel bar 21, and 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 vertical steel bar 21 is easier to enter the main hole section 1111 of the inner hole 111 of the mounting sleeve 11, and when the vertical steel bar 21 enters the main hole section 1111, the vertical steel bar 21 is guided by the conical surface transition section 1112, so that the upper end of the vertical steel bar 21 is easier to enter the positioning section 1113, and the upper end of the vertical steel bar 21 is in clearance fit with the positioning section 1113, so that the vertical steel bar 21 and the mounting sleeve 11 are kept coaxial as much as possible, and the alignment between the upper shear wall 1 and the lower shear wall 2 is kept.
Referring to fig. 2, 4 and 5, four groups of spacer groups 7 are arranged between the upper surface of the floor cast-in-situ layer 4 and the bottom surface of the upper shear wall 1, each spacer group 7 is equidistantly arranged along the length direction of the upper shear wall 1, each spacer group 7 comprises a plurality of spacers 71 which are stacked, each spacer 71 is made of steel, and each spacer group 7 is used for raising the upper surface of the floor cast-in-situ layer 4 and the bottom surface of the upper shear wall 1 to form grouting gaps 51; a lateral plugging material 52 is arranged between the floor cast-in-situ layer 4 and the upper shear wall 1, and the lateral plugging material 52 is used for closing the peripheral side opening of the grouting joint 51.
Referring to fig. 2 and 3, four grout inlet holes 12 are formed in one side of the upper shear wall 1, each grout inlet hole 12 is arranged along the length direction of the upper shear wall 1, each grout inlet hole 12 is respectively communicated with a group of mounting sleeves 11, and the mounting sleeves 11 are communicated with the grout inlet holes 12 through a main hole section 1111; four exhaust holes 13 are formed in one side, far away from the side where the slurry inlet holes 12 are formed in the upper shear wall 1, of each exhaust hole 13 is arranged in the length direction of the upper shear wall 1, each exhaust hole 13 is respectively communicated with one group of mounting sleeves 11, and each mounting sleeve 11 is communicated with each exhaust hole 13 through a positioning section 1113.
The high-strength grouting material is injected into the grouting joint 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 joint 51 is filled to form a grouting layer 5; in the process of grouting the grouting joint 51, air in the grouting joint 51 is discharged outwards through the gap between the vertical reinforcing steel bar 21 and the positioning section 1113 and the exhaust hole 13.
Because the flatness error is unavoidable between the bottom surface of the upper shear wall 1 and the upper surface of the floor cast-in-situ layer 4, the height dimension of the grouting joint 51 is inevitably fluctuated, and in order to make each spacer group 7 contact with the bottom surface of the upper shear wall 1 as simultaneously as possible, the following arrangement is made (refer to fig. 5): the middle part of the gasket 71 is provided with a dish-shaped protruding part 711, the inner concave surface of the dish-shaped protruding part 711 is arranged downwards, the bottom surface of the dish-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 dish-shaped protruding part 711, namely, the dish-shaped protruding part 711 is only provided with a peripheral wall, and the peripheral wall of the dish-shaped protruding part 711 is provided with a notch 713. By providing the dished boss 711 with the notch 713 in the middle of the spacer 71, the spacer groups 7 are relatively prone to deformation in the thickness direction when being pressed, so that it is advantageous to make each spacer group 7 abut against the bottom surface of the upper shear wall 1 as simultaneously as possible.
Referring to fig. 3 and 6, the inner side of the installation sleeve 11 is fixedly provided with an inner reinforcement 8, the inner reinforcement 8 comprises three bead rings 81 axially arranged along the installation sleeve 11, the diameter of the bead rings 81 is smaller than the gap width between the vertical steel bar 21 and the inner wall of the installation sleeve 11, the bead rings 81 and the installation sleeve 11 are coaxially arranged, the outer contour of the bead rings 81 is abutted against the inner wall of the main hole section 1111, each bead ring 81 is commonly connected with a plurality of vertical steel wires 82, the inner reinforcement 8 is fixedly welded with the inner wall of the installation sleeve 11 through the vertical steel wires 82, the bead rings 81 are provided with four guide steel wires 83 arrayed along the center circumference of the bead rings 81, each guide steel wire 83 is gradually inclined upwards along the direction close to the center of the bead rings 81, and one end of each guide steel wire 83 far away from the bead ring 81 is abutted against the cylindrical surface of the vertical steel bar 21.
Referring to fig. 6, the upper end of the guide wire 83 extends upward to form a first arc segment 831, and the center of curvature of the first arc segment 831 is located at one side of the guide wire 83 near the inner wall of the installation sleeve 11; the upper end of the guide steel wire 83 contacts the peripheral surface of the vertical steel bar 21 through the first arc section 831, so that the upper shear wall 1 is easy to move up and down and adjust 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 coincides with the center line of the bead ring 81, and the second arc segment 832 is welded and fixed in contact with the guide wire 83 in a circumferential surface. By arranging the second circular arc section 832, the effective connection length between the guide steel wire 83 and the steel wire ring 81 is increased, thereby being beneficial to guaranteeing the connection strength between the guide steel wire 83 and the steel wire ring 81.
In order to reduce the situation that the upper ends of the vertical bars 21 enter the inner side of the installation sleeve 11 and collide with the bead rings 81, the following arrangement (refer to fig. 3) is made: 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, and when the end part of the vertical steel bar 21 contacts the steel wire ring 81, the round angle 211 plays a role in guiding the vertical steel bar 21, so that 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 form a guiding effect on 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 blocking the vent holes 13, the plugs 9 include a plug portion 91 and a flange portion 92, the plugs 9 are inserted into the vent holes 13 through the plug portion 91, and the maximum diameter of the flange portion 92 is larger than the aperture of the vent holes 13, and the plugs 9 are detachably connected with the vent holes 13; the upper shear wall 1 is provided with a limiting part 10, the limiting part 10 comprises a cross rod 101, the length of the cross rod 101 is arranged along the length direction of the upper shear wall 1, the length of the cross rod 101 is larger than the length of the upper shear wall 1, the cross rod 101 is used for abutting against the end face of the plug 9 away from the upper shear wall 1, two ends of the cross rod 101 are respectively and vertically fixedly connected with a screw rod 102, the length direction of the screw rod 102 is arranged along the thickness direction of the upper shear wall 1, the screw rod 102 extends across the thickness surface of the upper shear wall 1, a nut 103 is connected with the screw rod 102 in a threaded mode, and the nut 103 is used for clamping the upper shear wall 1 together with the cross rod 101.
In the initial stage of grouting the grouting joint 51, the plug 9 is separated from the vent hole 13, when the high-strength grouting material gradually fills the grouting joint 51 and the inner hole 111 of the mounting sleeve 11 until the grouting material overflows from the vent hole 13, the vent hole 13 is plugged by the plug 9, the position of the plug 9 is limited by the limiting piece 10, and the grouting pressure maintaining state is maintained for a certain time, so that the grouting material is beneficial to filling the grouting joint 51 as much as possible.
The implementation principle of the upper and lower connection structure of the assembled 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 that the upper end of the vertical steel bar 21 is inserted into the inner hole 111 of the mounting sleeve 11, the upper end of the vertical steel bar 21 is inserted into the positioning section 1113 after passing through the main hole section 1111 and the conical surface transition section 1112 in sequence, and the upper end of the vertical steel bar 21 is guided by the conical surface transition section 1112 during the process, so that the upper end of the vertical steel bar 21 smoothly enters the positioning section 1113, clearance fit is formed between the vertical steel bar 21 and the positioning section 1113, and the vertical steel bar 21 is better positioned after being inserted into the mounting sleeve 11, thereby being beneficial to keeping alignment between the upper shear wall 1 and the lower shear wall 2 as much as possible and further guaranteeing the building quality; in addition, a certain gap is maintained between the inner wall of the main hole section 1111 of the installation sleeve 11 and the outer circumferential surface of the vertical reinforcing steel bar 21, so that the installation sleeve 11 can be used for grouting.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The utility model provides an assembled shear wall building upper and lower connection structure, includes upper shear wall (1), lower shear wall (2), floor cast-in-place layer (4) and grout layer (5), floor cast-in-place layer (4) are located upper shear wall (1) with lower shear wall (2), grout layer (5) are located floor cast-in-place layer (4) with upper shear wall (1), the top of lower shear wall (2) is fixed to be provided with a plurality of vertical reinforcing bars (21), the upper end of vertical reinforcing bar (21) wears out floor cast-in-place layer (4), install sleeve (11) are inlayed to the lower part of upper shear wall (1), install sleeve (11) confession vertical reinforcing bar (21) are inserted and are established; the method is characterized in that: the mounting sleeve (11) is provided with an inner hole (111) with a downward opening, the inner hole (111) comprises a main hole section (1111), a conical surface transition section (1112) and a positioning section (1113) which are sequentially arranged from bottom to top, the inner diameter of the main hole section (1111) is larger than the outer contour diameter of the vertical reinforcing steel bar (21), the positioning section (1113) is in clearance fit with the vertical reinforcing steel bar (21), and one side of the upper shear wall (1) is provided with a slurry inlet hole (12) for communicating the inner hole (111) of the mounting sleeve (11);
the inner side of the installation sleeve (11) is fixedly provided with an inner reinforcing part (8), the inner reinforcing part (8) comprises a plurality of steel wire rings (81) which are axially arranged along the installation 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 installation sleeve (11), the steel wire rings (81) and the installation sleeve (11) are coaxially arranged, the outer contour of each steel wire ring (81) is abutted against the inner wall of the main hole section (1111), a plurality of vertical steel wires (82) are commonly connected with each steel wire ring (81), a plurality of guide steel wires (83) are fixedly connected with each steel wire ring (81), each guide steel wire (83) is gradually inclined upwards along the direction close to the center of the steel wire ring (81), and one end, far away from the steel wire ring (81), of each guide steel wire (83) is abutted against the cylindrical surface of the vertical steel bar (21);
a first circular arc section (831) extends upwards from the upper end of the guide steel wire (83), and the curvature center of the first circular arc section (831) is positioned at one side of the guide steel wire (83) close to the inner wall of the mounting sleeve (11); the lower end of the guide steel wire (83) is extended with a second circular arc section (832), the curvature center of the second circular arc section (832) coincides with the center line of the steel wire ring (81), and the second circular arc section (832) and the guide steel wire (83) are welded and fixed in a peripheral surface contact mode.
2. The assembled shear wall building up-down connection structure 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 assembled shear wall building up-down connection structure according to claim 1, wherein: the diameter of the vertical steel wire (82) is the same as that of the steel wire ring (81), and a round angle (211) is arranged at the upper end of the vertical steel bar (21); the radius of the fillet (211) is larger than the diameter of the bead ring (81).
4. The assembled shear wall building up-down connection structure according to claim 1, wherein: the novel cast-in-place wall is characterized in that a plurality of groups of gasket groups (7) are arranged between the upper surface of the floor 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 enabling the upper surface of the floor cast-in-place layer (4) and the bottom surface of the upper shear wall (1) to be lifted to form a grouting joint (51), each gasket group (7) comprises a plurality of gaskets (71) which are stacked, each gasket (71) is a metal piece, a disc-shaped protruding portion (711) is arranged at the middle part of each gasket (71), the inner concave surface of each disc-shaped protruding portion (711) is downwards arranged, and a lateral blocking material (52) is arranged between the floor cast-in-place layer (4) and the upper shear wall (1), and each lateral blocking material (52) is used for sealing a peripheral opening of each grouting joint (51).
5. The upper and lower connection structure of a fabricated shear wall building according to claim 4, wherein: the bottom surface of dish protruding portion (711) is equipped with through-hole (712), the diameter of through-hole (712) equals the internal diameter of dish protruding portion (711) less one end, the perisporium of dish protruding portion (711) is equipped with breach (713).
6. The assembled shear wall building up-down connection structure according to claim 1, wherein: the installation sleeve (11) is communicated with the slurry inlet hole (12) through the main hole section (1111), one side of the upper shear wall (1) is provided with an exhaust hole (13), and the exhaust hole (13) is used for being communicated with the positioning section (1113) of the installation sleeve (11).
7. The assembled shear wall building up-down connection structure according to claim 6, wherein: the upper shear wall (1) is provided with a plug (9) for blocking the exhaust hole (13), and the plug (9) is detachably connected with the exhaust hole (13).
8. The assembled shear wall building up-down connection structure according to claim 7, wherein: the utility model discloses a shear force wall, including upper shear force wall (1), upper shear force wall (1) is equipped with locating part (10), locating part (10) include horizontal pole (101), the length of horizontal pole (101) is followed upper shear force wall (1) length direction sets up, the length of horizontal pole (101) is greater than upper shear force wall (1) length, horizontal pole (101) are used for the butt chock plug (9) keep away from upper shear force wall (1) terminal surface, 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 upper shear force wall (1) thickness direction sets up, screw rod (102) extend and cross upper shear force wall (1) thickness face, screw rod (102) threaded connection has nut (103), nut (103) be used for with horizontal pole (101) centre gripping jointly upper shear force wall (1).
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