CN110565837A - Suspended precast shear wall semi-buried inner wall connecting structure and method - Google Patents
Suspended precast shear wall semi-buried inner wall connecting structure and method Download PDFInfo
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- CN110565837A CN110565837A CN201910725726.4A CN201910725726A CN110565837A CN 110565837 A CN110565837 A CN 110565837A CN 201910725726 A CN201910725726 A CN 201910725726A CN 110565837 A CN110565837 A CN 110565837A
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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
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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
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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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Abstract
the invention discloses a suspended precast shear wall semi-buried inner wall connecting structure and a method, and belongs to the field of prefabricated concrete structures. The structure is used for connecting an upper suspended wall body and a lower suspended wall body, wherein a bearing rod is arranged in the lower bracket wall body, the bearing rod is connected with the upper suspended wall body containing a lifting frame through a bolt, and then a through nut which is completely screwed into the lower bracket wall body is reversely screwed back to the extending reinforcing steel bars of the upper suspended wall body to complete the reinforcing steel bar connection; and (3) mounting a prefabricated bottom plate on the cantilever plate at the bottom of the lifting frame, enabling upper-layer steel bars of the floor slab to pass through the semi-embedded connecting area to form a steel bar mesh with the arch-shaped steel bar fixing frame on the prefabricated bottom plate, and pouring concrete to form a whole pouring surface layer to finish wall connection. According to the connecting structure, the steel bars are connected through the hoisting frame suspended shear wall through the threads, the integral connection is formed by reducing the elevation of the upper-layer wall structure, the construction quality of the connecting area of the prefabricated part can be effectively controlled, and meanwhile, the construction cost is reduced and the construction process is simple and convenient.
Description
Technical Field
the invention belongs to the field of fabricated concrete structures, and particularly relates to a suspended precast shear wall semi-buried inner wall connecting structure.
background
The prefabricated concrete structure is a main structural form of building industrialization in China, the main building process is to prefabricate each prefabricated component in a factory, then the installation of the components is completed on a construction site according to a preset connection mode, the installation sequence of the upper and lower layers of structural components is lower-layer wall → prefabricated laminated slab → cast-in-place surface layer → upper-layer wall (converted into lower-layer wall) → prefabricated laminated slab → cast-in-place surface layer → upper-layer wall installation in the last step, the connection of steel bars is mainly adopted, grouting connection is adopted, the method is commonly called as 'dark box operation', the defect is that the proper amount of grouting construction is difficult to control, and the method is influenced by various factors, such as grouting material mixing ratio, worker technical level, operation space and the like.
Disclosure of Invention
in order to solve the problems in the prior art, the invention provides a suspended precast shear wall semi-buried inner wall connection structure, which specifically comprises:
a semi-buried inner wall connecting structure of a suspended prefabricated shear wall is used for connecting a prefabricated upper suspended wall body and a prefabricated lower wall body and comprises an upper suspended wall body connecting structure, a lower wall body connecting structure and a middle pouring structure; the upper suspended wall body connecting structure is used for supporting the dead weight of the upper suspended wall body, and simultaneously the upper suspended wall body is connected with the lower wall body through the connection with the lower wall body connecting structure; the lower-layer wall body connecting structure connects the lower-layer wall body with the upper suspended wall body through the connection with the upper suspended wall body connecting structure; the middle pouring structure is located at the joint of the upper suspended wall body connecting structure and the lower layer wall body connecting structure and is used for pouring in the middle pouring structure after the upper suspended wall body is connected with the lower layer wall body.
Specifically, the upper suspended wall body connecting structure comprises a lifting frame, a prefabricated upper end threaded steel bar, a steel bar positioning plate and a whole pouring surface layer control line;
the lifting frame comprises ear plates, cantilever plates, supporting angle steel, end anchor plates and prefabricated anchor bars; the ear plate is of a U-shaped structure, and an opening of the U-shaped structure is used for being clamped and connected with the lower-layer wall connecting structure; two sides of the lower surface of the cantilever plate are respectively connected with an ear plate, and the horizontal distance between the ear plates connected with the two sides is not less than the thickness of the upper suspended wall body or the lower layer wall body; the upper surface of the cantilever plate is connected with a support angle steel; the end anchor plate is connected to the upper end of the supporting angle steel and is connected with the two prefabricated anchor bars, and the end anchor plate and the prefabricated anchor bars form a whole body which is used for fixing the lifting frame on the upper suspended wall body;
The prefabricated upper end head thread steel bar comprises a thread end;
the steel bar positioning plate is simultaneously used for fixing the prefabricated anchor bars and prefabricating the end with the threads of the threaded steel bar at the upper end;
and the whole pouring surface layer control line is used for controlling the pouring thickness of the middle pouring structure.
Specifically, the length of the cantilever plate is 30mm greater than the thickness of the upper suspended wall body.
Specifically, the reinforcing steel bar positioning plate is a rectangular steel plate with the thickness of 2mm, and a hole is reserved in the reinforcing steel bar positioning plate and used for prefabricating the threaded end of the upper end head of the threaded reinforcing steel bar and penetrating out of the prefabricated anchor bar.
specifically, the lower-layer wall connecting structure comprises a bearing rod, a prefabricated lower end head thread steel bar and a coaxial nut;
The bearing rod comprises an end plate, a connecting rod and a fixing device, wherein the end plate is a rectangular plate, the left end and the right end of the connecting rod respectively penetrate through the end plate, the length of the connecting rod is equal to the thickness of the lower-layer wall body, and the fixing device is arranged at the position where the connecting rod penetrates through the end plate; the fixing device comprises a U-shaped position supplementing plate which is matched and clamped with the opening of the U-shaped structure of the ear plate;
The prefabricated lower end head thread steel bar comprises a thread end;
The coaxial nut is used for connecting one end with threads of the prefabricated upper end head thread steel bar and one end with threads of the prefabricated lower end head thread steel bar.
specifically, the middle pouring structure comprises a prefabricated bottom plate, a plurality of horizontal prefabricated steel bars are contained in the prefabricated bottom plate, the prefabricated steel bars are fixed through an arched steel bar fixing frame, and the steel bar fixing frame is perpendicular to the axial direction of the prefabricated steel bars; the steel bar fixing frame comprises a plurality of convex parts and fixing strips for connecting the lowest points of the adjacent convex parts, one side of the convex part facing the prefabricated steel bar is provided with an opening, and the other side opposite to the opening side of the convex part exceeds the prefabricated bottom plate; the prefabricated reinforcing bar interval is located the convex part of reinforcing bar mount and on the fixed strip, fixes into whole with all reinforcing bars through convex part and fixed strip.
more specifically, the thickness of the prefabricated base plate is 40mm, and the other side opposite to the opening side of the convex portion exceeds the prefabricated base plate by 80 mm.
The invention also provides a method for connecting the suspended prefabricated shear wall semi-buried inner wall by adopting the connecting structure, which is used for connecting a prefabricated upper suspended wall body and a lower wall body.
Specifically, the method sequentially comprises the following steps:
step 1, prefabricating and maintaining an upper suspended wall body, a lower layer wall body and a prefabricated bottom plate: the prefabricated anchor bars and the prefabricated upper end head thread steel bars are prefabricated in the upper suspended wall body, the prefabricated lower end head thread steel bars are prefabricated in the lower wall body, the end, provided with threads, of the prefabricated upper end head thread steel bars is reserved outside the upper suspended wall body, the end, provided with threads, of the prefabricated lower end head thread steel bars is reserved outside the lower wall body, and the prefabricated lower end head thread steel bars and the prefabricated upper end head thread steel bars are longitudinal steel bars in the wall body; part of the steel bar fixing frame is reserved outside the prefabricated bottom plate;
step 2, connecting the bearing rod to the lower-layer wall body, clamping two ends of the end plate on the lower-layer wall body along the thickness direction of the lower-layer wall body, enabling the upper surface of the end plate to be flush with the top surface of the lower-layer wall body, and pre-installing a coaxial nut at one end of the prefabricated lower end head where the thread is arranged on the thread steel bar; clamping and embedding the lug plates of the upper suspended wall body connecting structure into the end parts of the connecting rods, wherein the length of each connecting rod is equal to the distance between the lug plates of the lifting frame, fixing the fixing device after adjusting the verticality of the upper suspended wall body, and connecting the threaded end of the prefabricated lower end head threaded steel bar with the threaded end of the prefabricated upper end head threaded steel bar through the coaxial nut to complete the semi-suspended connection of the upper suspended wall body;
step 3, connecting the prefabricated bottom plate, wherein the part of the cantilever plate, which exceeds the upper suspended wall body, is used for temporarily assisting and fixing the prefabricated bottom plate, and after the prefabricated bottom plate is positioned on the cantilever plate, fixing upper-layer horizontal steel bars in the floor slab to the horizontal part of the convex part of the steel bar fixing frame;
step 4, pouring the whole cast surface layer in situ, and finishing the concrete pouring of the whole cast surface layer according to the whole cast surface layer control line of the overhead wall;
And 5, after the pouring is finished, the upper suspended wall is newly used as a lower wall body, and the connection of the upper suspended wall body is continuously carried out until the connection of the semi-buried inner wall of the suspended prefabricated shear wall is finished.
more specifically, in the step 1, when the upper suspended wall body is prefabricated, prefabricated upper end head thread steel bars are parallel to anchor bars, and the prefabricated upper end head thread steel bars are threaded at two ends of the longitudinal steel bars of the wall body to form threads with the length of 40 mm; the distance between the horizontal prefabricated steel bars is equal to the distance between the prefabricated upper end head thread steel bars or the prefabricated lower end head thread steel bars; the coaxial nut is a cylinder, the inner side surface of the coaxial nut is carved with threads, and the wall thickness is 5 mm.
The invention has the following effects:
The connecting structure is adopted to connect the semi-buried inner wall of the suspended prefabricated shear wall, the mounting sequence of the upper layer of prefabricated components and the lower layer of prefabricated components is reasonably adjusted, and the optimized mounting sequence is that the lower layer of wall → the upper layer of wall → the prefabricated superposed bottom plate → the cast-in-place surface layer → the upper layer of wall is changed into the lower layer of wall → the upper layer of wall → the prefabricated superposed bottom plate → the cast-in-place surface layer → the construction quality of the connecting area of the prefabricated components can be effectively controlled, and meanwhile, the construction cost and the simple construction process are reduced. Meanwhile, the grouting construction amount can be effectively controlled through the whole pouring surface control line.
Drawings
in order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
fig. 1 is a schematic view of a half-buried inner wall connection structure of a suspended precast shear wall provided by the invention;
Fig. 2(a) is a schematic view of an upper suspended wall body of a half-buried inner wall connection structure of a suspended precast shear wall according to the present invention;
Fig. 2(b) is a schematic view of a lifting frame of a half-buried inner wall connection structure of a suspended precast shear wall according to the present invention;
fig. 2(c) is a schematic view of a steel bar positioning plate of a half-buried inner wall connection structure of a suspended precast shear wall according to the present invention;
Fig. 3(a) is a schematic view of a lower bracket wall body of a half-buried inner wall connection structure of a suspended precast shear wall provided by the invention;
Fig. 3(b) is a schematic view of a force-bearing rod of a half-buried inner wall connection structure of a suspended precast shear wall provided by the invention;
fig. 3(c) is a schematic view of a fixing device of a half-buried inner wall connection structure of a suspended precast shear wall according to the present invention;
Fig. 3(d) is a schematic view of a coaxial nut of a half-buried inner wall connection structure of a suspended precast shear wall according to the present invention;
FIG. 4 is a schematic view of a fully-poured surface layer of a semi-buried inner wall connection structure of a suspended precast shear wall provided by the invention;
fig. 5 is a schematic diagram of a prefabricated bottom plate of a suspended prefabricated shear wall semi-buried inner wall connection structure provided by the invention.
The meaning of each reference number in the figures is:
1, hanging the wall body in the air, 2, arranging a surface layer, 3, and 4, prefabricating a superposed bottom plate;
11 hoisting frames, 12 steel bar positioning plates, 13 prefabricated upper end head thread steel bars and 14 integrally cast a surface layer control line;
111 ear plates, 112 cantilever plates, 113 supporting angle steels, 114 end anchor plates and 115 prefabricated anchor bars;
21 bearing rod, 22 prefabricated lower end head thread steel bar, 23 coaxial nut;
211 connecting rod, 212 end plate, 213 hexagonal nut and 214 fixing device;
2141U-shaped position supplementing plate, 2142 annular position clamping;
42 prefabricated steel bars and 43 steel bar fixing frames.
Detailed Description
To make the structure and advantages of the present invention clearer, the structure of the present invention will be further described with reference to the accompanying drawings.
example 1:
The embodiment provides a half-buried interior wall connection structure of a suspended precast shear wall, which comprises an upper suspended wall body 1, a lower layer wall body 2, a whole-pouring surface layer 3 and a precast superposed bottom plate 4. The lower wall body 2 is also a lower bracket wall body, wherein the upper suspended wall body 1, the lower bracket wall body, the prefabricated bottom plate 4 and the auxiliary devices thereof are manufactured and maintained in a prefabricated factory, and the whole pouring surface layer 3 is poured with concrete on site after the binding of the reinforcing steel bars on the upper layer of the floor slab is finished, so that the wall body connection is finished.
the upper suspended wall body 1 comprises a lifting frame 11, a steel bar positioning plate 12, prefabricated upper end head thread steel bars 13 and a whole pouring surface layer control line 14.
the lifting frame 11 consists of an ear plate 111, a cantilever plate 112, a support angle iron 113, an end anchor plate 114 and a prefabricated anchor bar 115; wherein, the one end of otic placode 111 sets up "U" type breach, and two are a set of, and hang the board 112 length and be greater than wall thickness 30mm, and support angle steel 113 bears the wall body dead weight, and end anchor plate 114 and prefabricated anchor 115 constitute wholly and fix the hoisting frame in last unsettled wall body 1.
the lifting frame 11 is I-shaped, the cantilever plate 112 and the end anchor plate 114 are horizontally arranged, the former is used for assisting in temporarily fixing the prefabricated bottom plate 4, the latter and the prefabricated anchor bar 115 form a whole, when the prefabricated anchor bar 115 penetrates through the steel bar positioning plate 12 to be thick, the lifting frame 11 and the upper suspended wall body 1 form a whole, and finally the suspension function of the upper suspended wall body 1 is realized; the ear plates 111 and the support angle steels 113 are vertically arranged, the former penetrates through the connecting rods 211 of the bearing rods 21 of the lower bracket wall body, the connection is preliminarily fixed, the verticality of the upper suspended wall body 1 is convenient to adjust, the latter is a main device for bearing the dead weight of the upper suspended wall body 1 and forms a suspended space, and the upper steel bars of the floor slab are convenient to form a whole after penetrating.
go up unsettled wall body 1's reinforcing bar locating plate 12 is 2mm thick rectangle steel sheet, is located the wall body and is close to floor one side, and the hole is reserved to the position of wearing out of prefabricated upper end screw reinforcement 13 of last unsettled wall body 1 and 11 prefabricated anchor bars 115 of hoisting frame, compromises wall body downside template at last unsettled wall body 1 mill prefabricated stage simultaneously. The end threaded steel bars 13/22 of the upper suspended wall body 1 and the lower bracket wall body are longitudinal steel bars in the wall body, and the two ends of the upper suspended wall body and the lower bracket wall body are carved to form threads with the length of 40mm, and are connected through the coaxial nuts 23.
The lower bracket wall comprises a bearing rod 21, an end head thread reinforcing steel bar 22 and a coaxial nut 23.
the bearing rod 21 of the lower bracket wall body is of a shoulder pole type and comprises an end plate 212, a connecting rod 211, a hexagonal nut 213 and a fixing device 214; the end plate 212 is a rectangular steel plate, a round hole is formed in the middle of the end plate close to the upper side, and the upper surface of the round hole is flush with the top surface of the wall body; the length of the connecting rod 212 is equal to the thickness of the wall, threads are arranged at two ends of the connecting rod, the end plates 212 penetrate into the connecting rod 211 through round holes, and the distance between the end plates 212 at two sides is equal to that between the lug plates 111 of the lifting frame 11; the fixing device 214 is composed of a "U" shaped complementary plate 2141 and a ring-shaped detent 2142, the size of the "U" shaped complementary plate 2141 matches with the "U" shaped notch of the ear plate 111 of the lifting frame 11, the ring-shaped detent 2142 is sleeved in the screw thread of the connecting rod 212, and is mainly used for providing a complete pressure-receiving surface for the ear plate 111.
The method comprises the steps that mounting spaces for ear plates 111 of a lifting frame 11 and a fixing device 214 are reserved at the position where a bearing rod 21 is embedded in a lower bracket wall body, firstly, a suspended wall body 1 is mounted, the ear plates 111 on two sides of the lifting frame 11 are embedded into the end part of a connecting rod 211 of the bearing rod 21, the fixing device 21 is placed, and after the wall body is correctly located, the wall body is fixed through a hexagon nut 213, so that the suspended upper suspended wall body 1 is formed.
The coaxial nut 23 of the lower bracket wall body is a cylinder, the length of the coaxial nut is equal to the length of the prefabricated lower end head threaded steel bar 22 extending out of one side of the wall body, threads are carved on the inner side surface of the coaxial nut, the wall thickness of the coaxial nut is 5mm, the coaxial nut is pre-installed on the end head threaded steel bar 22 extending out of the lower bracket wall body, after the upper suspension wall body 1 is fixed, the coaxial nut 23 completely screwed into the lower bracket wall body is reversely screwed back to the middle part of the connection of the two end head threaded steel bars 13/.
The whole pouring surface layer 3 and the prefabricated laminated bottom plate 4 comprise reinforcing steel bars 33/42 and a bow-shaped reinforcing steel bar fixing frame 43.
the thick bottom of prefabricated coincide bottom plate 4 is 40mm, and inside reinforcing bar comprises horizontal reinforcement and "bow" shaped steel bar mount 43. The height of the arch-shaped steel bar fixing frame 43 is 80mm, one part of the vertical steel bars is prefabricated in the prefabricated laminated bottom plate 4, the height is 80mm, and the distance between the horizontal steel bars is equal to that between the steel bars in the floor slab. One side of the arch-shaped steel bar fixing frame 43 is embedded in the prefabricated bottom plate in the factory prefabrication stage, the other side of the arch-shaped steel bar fixing frame protrudes, and after the prefabricated superposed bottom plate 4 is located on the cantilever plate 112 of the lifting frame 11, upper-layer horizontal steel bars in the floor slab are fixed on the horizontal part of the protruding position of the arch-shaped steel bar fixing frame 43.
and finishing the concrete pouring of the whole pouring surface layer 3 according to the whole pouring surface layer control line 14 of the upper suspended wall body 1.
An implementation process of a half-buried inner wall connecting structure of a suspended precast shear wall is as follows:
the first step is as follows: the manufacturing of the lifting frame is completed by the ear plate, the cantilever plate, the supporting angle steel, the end anchor plate and the anchor bar, the manufacturing of the bearing rod is completed by the end plate, the connecting rod, the hexagon nut and the fixing device, and a welding process, a mechanical connection process or other processes are adopted; completing the manufacture of the coaxial nut and other fittings.
the second step is that: and (2) passing anchor bars of the lifting frame through a steel bar positioning plate, passing threaded steel bars at the end of longitudinal steel bars in the wall body through the steel bar positioning plate, fixing the steel bar positioning plate with other template devices of the prefabricated part, binding horizontal steel bars and pre-embedded bearing rods on the upper part of the wall body, and pouring concrete to form the prefabricated part, wherein the installation reserved space of the bearing rod part is formed by foamed plastic.
the third step: and laying the prefabricated bottom plate steel bars and the arch-shaped steel bar fixing frame to complete the factory manufacture and maintenance of the prefabricated bottom plate.
The fourth step: the construction site installation comprises the following installation processes: the lower wall → the upper wall → the prefabricated laminated slab → the cast-in-place surface → the upper wall is changed into the lower wall → the upper wall → the prefabricated laminated slab → the cast-in-place surface. The method comprises the following specific steps: after the lower wall body is installed, the lug plate of the upper wall body penetrates through the connecting rod of the bearing rod, after the verticality is adjusted, the fixing device is installed, the upper wall body is finally fixed through the hexagon nut, the semi-suspension installation of the upper wall body is completed, then the prefabricated bottom plate is installed, the plate is tied into the reinforcing mesh on the upper layer of the floor slab, the thickness of the floor slab is formed through the bow-shaped reinforcing fixing frame, and finally concrete is poured to the whole pouring surface layer control line to complete the connection of the inner wall of the prefabricated shear wall.
In the implementation process of the semi-buried inner wall connecting structure of the suspended precast shear wall, other construction devices are needed, such as a lead screw for adjusting the perpendicularity of the wall body, and a scaffold for fixing the precast bottom plate to bear construction load.
It should be noted that: the embodiment of prefabricating the shear wall by using the suspended precast shear wall semi-buried inner wall connecting structure provided by the embodiment is only used as the description of the connecting structure in practical application, and the connecting structure can be used in other application scenes according to practical requirements, and the specific implementation process is similar to that of the embodiment and is not repeated here.
the sequence numbers in the above embodiments are merely for description, and do not represent the sequence of the assembly or the use of the components.
the above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In addition, the upper part and the lower part are divided according to the installation sequence of the wall body, absolute position relation does not exist, meanwhile, the structural parts are prefabricated before naming, and the structural parts are only shown to be prefabricated parts and need to be prefabricated and maintained in advance.
Claims (10)
1. A suspended prefabricated shear wall semi-buried inner wall connecting structure is used for connecting a prefabricated upper suspended wall body (1) and a prefabricated lower wall body (2), and is characterized by comprising an upper suspended wall body connecting structure, a lower wall body connecting structure and a middle pouring structure;
the upper suspended wall body connecting structure is used for supporting the self weight of the upper suspended wall body (1), and meanwhile, the upper suspended wall body (1) is connected with the lower layer wall body (2) through the connection with the lower layer wall body connecting structure;
the lower-layer wall body connecting structure connects the lower-layer wall body (2) with the upper suspended wall body (1) through the connection with the upper suspended wall body connecting structure;
the middle pouring structure is located at the joint of the upper suspended wall body connecting structure and the lower layer wall body connecting structure and is used for pouring in the middle pouring structure after the upper suspended wall body (1) and the lower layer wall body (2) are connected.
2. The suspended precast shear wall semi-buried inner wall connecting structure according to claim 1, wherein the upper suspended wall body connecting structure comprises a hoisting frame (11), precast upper end head thread steel bars (13), a steel bar positioning plate (12) and a whole pouring surface layer control line (14);
The lifting frame (11) comprises ear plates (111), a cantilever plate (112), support angle steel (113), an end anchor plate (114) and a prefabricated anchor bar (115); the ear plate (111) is of a U-shaped structure, and an opening of the U-shaped structure is used for being clamped and connected with the lower-layer wall connecting structure; two sides of the lower surface of the cantilever plate (113) are respectively connected with an ear plate (111), and the horizontal distance between the ear plates (111) connected with the two sides is not less than the thickness of the upper suspended wall body (1) or the lower layer wall body (2); the upper surface of the cantilever plate (112) is connected with a support angle steel (113); the supporting angle steel (113) is connected with an end anchor plate (114), the end anchor plate (114) is connected with two prefabricated anchor bars (115), and the end anchor plate (114) and the prefabricated anchor bars (115) form a whole body which is used for fixing the lifting frame (11) on the upper suspended wall body (1);
The prefabricated upper end head thread steel bar (13) comprises a thread end;
the steel bar positioning plate (12) is used for fixing the prefabricated anchor bar (115) and the end with the threads of the prefabricated upper-end threaded steel bar (13) at the same time;
the whole pouring surface layer control line (14) is used for controlling the pouring thickness.
3. The suspended precast shear wall semi-buried inner wall connecting structure as recited in claim 2, wherein the length of the cantilever plate (112) is 30mm greater than the thickness of the upper suspended wall body (1).
4. The connecting structure of the suspended precast shear wall and the semi-buried inner wall as claimed in claim 2, wherein the steel bar positioning plate (12) is a rectangular steel plate with the thickness of 2mm, and a hole is reserved on the steel bar positioning plate for penetrating out of the threaded end of the precast upper end head thread steel bar (13) and the precast anchor bar (115).
5. The suspended precast shear wall semi-buried inner wall connecting structure according to claim 1, wherein the lower wall connecting structure comprises a bearing rod (21), a precast lower end head thread steel bar (22) and a coaxial nut (23);
the bearing rod (21) comprises an end plate (212), a connecting rod (211) and a fixing device (214), wherein the end plate (212) is a rectangular plate, the left end and the right end of the connecting rod (221) respectively penetrate through the end plate (212), the length of the connecting rod (211) is equal to the thickness of the lower-layer wall body (2), and the fixing device (214) is arranged at the position where the connecting rod (211) penetrates through the end plate (212); the fixing device (214) comprises a U-shaped position supplementing plate (2141) which is matched and clamped with an opening of the U-shaped structure of the ear plate (111);
The prefabricated lower end head thread steel bar (22) comprises a thread end;
the coaxial nut (23) is used for connecting one end with threads of the prefabricated upper end head thread steel bar (13) and one end with threads of the prefabricated lower end head thread steel bar (22).
6. The suspended precast shear wall semi-buried inner wall connecting structure according to claim 1, wherein the intermediate pouring structure comprises a precast laminated bottom plate (4), a plurality of horizontal precast reinforcing steel bars (42) are contained in the precast laminated bottom plate (4), the precast reinforcing steel bars (42) are fixed by an arch-shaped reinforcing steel bar fixing frame (43), and the reinforcing steel bar fixing frame (43) is perpendicular to the axial direction of the precast reinforcing steel bars (42);
The steel bar fixing frame (43) comprises a plurality of convex parts and fixing strips for connecting the lowest points of the adjacent convex parts, one side of the convex part facing the prefabricated steel bar (42) is opened, and the other side opposite to the opening side of the convex part exceeds the prefabricated superposed bottom plate (4);
the prefabricated steel bars (42) are positioned in the convex parts of the steel bar fixing frame (43) and on the fixing strips at intervals, and all the prefabricated steel bars (42) are fixed into a whole through the convex parts and the fixing strips.
7. the suspended precast shear wall semi-buried inner wall connection structure according to claim 6, wherein the thickness of the precast laminated bottom plate (4) is 40mm, and the other side opposite to the opening side of the convex part exceeds the precast laminated bottom plate (4) by 80 mm.
8. a method for connecting a suspended prefabricated shear wall semi-buried inner wall by using the connecting structure of claim 1, 2, 5 or 6 is used for connecting a prefabricated upper suspended wall body (1) and a lower wall body (2), and is characterized in that the connecting method comprises the steps of firstly connecting the lower wall body connecting structure to the lower wall body (2), then prefabricating and connecting the upper suspended wall body connecting structure to the upper suspended wall body (1), then connecting the lower wall body (2) and the upper suspended wall body (1) through the connection of the lower wall body connecting structure and the upper suspended wall body connecting structure, finally pouring through a middle pouring structure perpendicular to the upper suspended wall body (1), and after pouring is finished, continuing to connect the upper suspended wall body (1) as the lower wall body (2).
9. The method according to claim 8, characterized in that it comprises in particular the steps of:
Step 1, prefabricating and maintaining an upper suspended wall body (1), a lower layer wall body (2) and a prefabricated superposed bottom plate (4): the prefabricated anchor bar (115) and the prefabricated upper end head thread steel bar (13) are prefabricated in the upper suspended wall body (1), the prefabricated lower end head thread steel bar (22) is prefabricated in the lower layer wall body (2), the end with threads of the prefabricated upper end head thread steel bar (13) is reserved outside the upper suspended wall body (1), the end with threads of the prefabricated lower end head thread steel bar (22) is reserved outside the lower layer wall body (2), and the prefabricated lower end head thread steel bar (22) and the prefabricated upper end head thread steel bar (13) are longitudinal steel bars in the wall body; part of the steel bar fixing frame (43) is reserved outside the prefabricated superposed bottom plate (4);
Step 2, connecting the bearing rod (21) on the lower-layer wall body (2), clamping two ends of an end plate (212) on the lower-layer wall body (2) along the thickness direction of the lower-layer wall body (2), enabling the upper surface of the end plate (212) to be flush with the top surface of the lower-layer wall body (2), and pre-installing a coaxial nut (23) on the threaded end of the prefabricated lower end head threaded steel bar (22); clamping and embedding the lug plates (111) of the upper suspended wall body connecting structure into the end parts of the connecting rods (211), wherein the length of the connecting rods (211) is equal to the distance between the lug plates (111) of the lifting frame (11), after the verticality of the upper suspended wall body (1) is adjusted, fixing the fixing device (214), and simultaneously connecting the threaded end of the prefabricated lower end head thread steel bar (22) with the threaded end of the prefabricated upper end head thread steel bar (13) through the coaxial nut (23) to complete the semi-suspended connection of the upper suspended wall body (1);
step 3, connecting the prefabricated laminated bottom plate (4), temporarily assisting and fixing the prefabricated laminated bottom plate (4) at the part of the cantilever plate (112) exceeding the upper suspended wall body (1), and fixing the upper-layer horizontal steel bars in the floor slab to the convex horizontal part of the steel bar fixing frame (43) after the prefabricated laminated bottom plate (4) is positioned on the cantilever plate (112);
Step 4, pouring the whole cast surface layer (3) in situ, and finishing concrete pouring of the whole cast surface layer (3) according to a whole cast surface layer control line (14) of the upper suspended wall body (1);
And 5, after the pouring is finished, the upper suspended wall body (1) is used as the lower layer wall body (2) again to continue to be connected with the upper suspended wall body (1) until the connection of the semi-buried inner wall of the suspended prefabricated shear wall is finished.
10. The method of claim 9, wherein in the step 1, when the upper suspended wall body (1) is prefabricated, the prefabricated upper end threaded steel bars (13) are parallel to the prefabricated anchor bars (115), and the prefabricated upper end threaded steel bars (13) are threaded at two ends of the longitudinal steel bars of the wall body to form threads with the length of 40 mm; the distance between the prefabricated steel bars (42) is equal to the distance between the prefabricated upper end head thread steel bars (13) or the prefabricated lower end head thread steel bars (22); the coaxial nut (23) is a cylinder, the inner side surface of the coaxial nut is carved with threads, and the wall thickness is 5 mm.
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| CN111321821A (en) * | 2020-02-28 | 2020-06-23 | 南京工程学院 | Adopt prefabricated shear force wall steel bar connection structure tied in a bundle of full assembled level seam |
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