CN213448967U

CN213448967U - Local cast-in-place type connected node of assembled concrete interior wall

Info

Publication number: CN213448967U
Application number: CN202021658176.3U
Authority: CN
Inventors: 孙良君; 刘星; 杜晓; 程栋华; 张明虎; 别奇华
Original assignee: Suzhou Wujiachen Construction Industry Co ltd
Current assignee: Suzhou Wujiachen Construction Industry Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-06-15
Anticipated expiration: 2030-08-11

Abstract

The utility model discloses an assembly type concrete inner wall local cast-in-place type connecting node, comprising two shear walls which are arranged in an overlapping way, wherein each shear wall comprises a wall body, vertical distribution steel bars and horizontal distribution steel bars are arranged in the wall body, two ends of each vertical distribution steel bar extend out of the wall body and are divided into top vertical steel bars and bottom vertical steel bars, and the adjacent vertical steel bars and the bottom vertical steel bars are mutually connected into an overlapping section and cast in place into a connecting cast-in-place section; two superposed prefabricated bottom plates are arranged between the adjacent wall bodies, and a floor cast-in-place layer is poured on the surfaces of the superposed prefabricated bottom plates; at least two auxiliary mounting holes are formed in the shear wall body along the thickness direction, a supporting beam is arranged in each auxiliary mounting hole, the two ends of each supporting beam are provided with the portal frame, the portal beam of the portal frame is connected with the supporting beam through the hoisting assembly, and the supporting legs of the portal frame abut against the surface of the overlapped prefabricated bottom plate. The utility model discloses the operation degree of difficulty greatly reduced, construction quality obtains the guarantee, and the inspection is convenient reliable.

Description

Local cast-in-place type connected node of assembled concrete interior wall

Technical Field

The utility model relates to an assembly type structure field, concretely relates to local cast-in-place type connected node of assembled concrete interior wall.

Background

The prefabricated concrete structure is a concrete structure formed by prefabricating and forming components in a factory and transporting the components to a construction site for assembly and installation. The prefabricated concrete structure is used as a structural form which accords with industrial development, and has the characteristics of high efficiency, emission reduction, greenness, low carbon, high component quality, labor force reduction and the like. In order to comprehensively implement a resource-saving and environment-friendly society and establish a living mode of harmonious coexistence of human and nature, the assembly type building is gradually developed in China and becomes the mainstream direction of the development of the building industry.

The assembled interior wall node generally includes lower floor's wall body, upper wall body and is located the floor layer between lower floor's wall body and the upper wall body, and the position that the floor layer is located between lower floor's wall body and the upper wall body is cast-in-place portion, carries out the cast-in-place again after the upper wall body installation is accomplished, and this is mainly for dodging the vertical reinforcing bar that stretches out lower floor's wall body top, and the vertical reinforcing bar of lower floor's wall body stretches into the steel sleeve of upper wall body bottom in, accomplishes the connection through the grout construction.

The above structure mainly has the following problems in the construction process:

1. the alignment operation construction difficulty of the steel bar sleeve and the vertical steel bar is high, so that the hoisting construction time is long;

2. the sleeve grout is connected highly to workman's technical requirement, and because the sleeve of connecting reinforcement is inside the component, the quality inspection difficulty, and the slip casting quality is difficult to guarantee, when the grout intensity is not enough, the reinforcing bar anchor length is not enough when appearing, if not properly handle, will influence the wholeness ability of structure, causes adverse effect to structure safety.

Therefore, it is highly desirable to develop a novel fabricated concrete inner wall connection node.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a local cast-in-place type connected node of assembled concrete interior wall, the operation degree of difficulty greatly reduced, construction quality obtains the guarantee, and it is convenient reliable to inspect.

In order to solve the technical problem, the utility model provides an assembly type concrete inner wall local cast-in-place type connected node, including two shear force wall bodies that overlap and set up, the shear force wall body includes the wall body, be provided with vertical distribution reinforcing bar and horizontal distribution reinforcing bar in the wall body, vertical distribution reinforcing bar both ends are all stretched out the wall body and are set up and be divided into top vertical reinforcing bar and bottom vertical reinforcing bar, and top vertical reinforcing bar and bottom vertical reinforcing bar between adjacent upper wall body and lower wall body adopt the ligature silk ligature to fix, become the overlap joint section, be provided with a plurality of cast-in-place district horizontal reinforcing bars in the overlap joint section, still be provided with the stirrup between a plurality of cast-in-place district horizontal reinforcing bars and the overlap joint section, pour the cast-in-place section of;

superposed prefabricated bottom plates are arranged on the top of the shear wall body at the lower part and on two sides of the thickness direction of the lap joint section, and a floor slab cast-in-place layer is poured on the surfaces of the superposed prefabricated bottom plates;

the shear wall body is close to bottom one side seted up two at least auxiliary mounting holes on the surface, the auxiliary mounting hole link up the shear wall body setting, be provided with a supporting beam in the auxiliary mounting hole, a supporting beam both ends all are provided with the portal, the portal beam of portal passes through hoisting assembly and a supporting beam connection, the supporting leg butt of portal is on the surface of coincide prefabricated bottom plate.

Further, the extension length of the top vertical steel bar and the bottom vertical steel bar is at least 20 times of D, and D is the diameter of the vertically distributed steel bars.

Furthermore, the concrete grade of the connecting cast-in-place section is greater than or equal to that of the shear wall.

Furthermore, the auxiliary mounting holes are positioned at the position of 10-20cm from the bottom of the wall body to the top direction, and hole forming molds are prefabricated in the auxiliary mounting holes.

Further, the supporting legs and the door beam of portal are square steel pipes, the supporting leg bottom is provided with drawing of patterns parcel layer.

Further, the support beam is made of square steel tubes.

Further, the hoisting assembly comprises a hoisting bolt, the bottom of the hoisting bolt penetrates through the door beam and the supporting beam and is connected with the bottom limiting end, and the top of the hoisting bolt is provided with a limiting gasket and an adjusting nut.

The utility model has the advantages that:

1. the use of steel bar sleeves is omitted in the connection between the two shear wall bodies, when the assembly is carried out, only simple alignment is needed, the fixing of the adjacent top vertical steel bars and the bottom vertical steel bars is very convenient, the operation difficulty of hoisting is reduced, and the assembly quality is improved.

2. The cast-in-place structure has the advantages of mature process, stable quality, no problems of large operation difficulty and difficult inspection, more tight combination of the connection cast-in-place section and the cast-in-place layer of the floor slab, high connection strength and good connection quality.

3. The portal can prop up a supporting beam, can adjust a supporting beam's levelness through hoisting assembly to guarantee the horizontal arrangement effect of shear force wall body, can also carry out position fixing, safe and reliable to the shear force wall body when improving butt joint construction quality. Through the dismantlement of hoist and mount subassembly, portal and a supporting beam homoenergetic separate to guarantee the convenience of assembly back ending, need not the cutting operation.

Drawings

Fig. 1 is a schematic view of the node structure of the present invention;

fig. 2 is a schematic view of a shear wall of the present invention;

fig. 3 is a schematic view of the gantry structure of the present invention.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1 to 3, an embodiment of the assembly type concrete inner wall local cast-in-place type connection node of the present invention includes two shear walls 1 arranged in an overlapping manner, each shear wall includes a wall body 2, vertical distribution steel bars 3 and horizontal distribution steel bars 4 are arranged in the wall body, two ends of each vertical distribution steel bar extend out of the wall body and are divided into top vertical steel bars 5 and bottom vertical steel bars 6, the top vertical steel bars and the bottom vertical steel bars between the adjacent upper wall and the lower wall are bound and fixed by binding wires to form a lap joint section 7, and a connecting cast-in-place section 8 is poured on the lap joint section; the use of steel bar sleeve has been saved to top vertical reinforcing bar and the mode of the vertical reinforcing bar lug connection in bottom to need not carry out the high accuracy butt joint, only need guarantee adjacent shear force wall body the relative position unanimous can, the overlap joint section is fixed through the mode of bundling the silk ligature, pour the overlap joint section through the formwork scene afterwards, become and connect cast-in-place section, thereby combine two shear force wall bodies as an organic whole, the assembly is pour the in-process, does not have the location and is difficult to the problem of inspection.

When the overlap joint, the extension length of top vertical reinforcing bar and bottom vertical reinforcing bar is 20 times D at least, and D is the diameter of vertical distribution reinforcing bar, effectively guarantees welded connection's intensity. Be provided with cast-in-place district horizontal reinforcement 15 in the overlap joint section, still be provided with the stirrup between a plurality of cast-in-place district horizontal reinforcement and the overlap joint section, it is specific, cast-in-place district horizontal reinforcement upwards quantity in the level be 2, quantity is 3 in vertical to two sets of cast-in-place district horizontal reinforcement of bottom pass through the stirrup and connect in vertical. The concrete grade of connecting cast-in-place section is more than or equal to the concrete grade of shear wall body, guarantees the effective strength of cast-in-place structure and the associativity with the wall body.

In the node, superposed prefabricated bottom plates 9 are arranged on the top of the shear wall body at the lower part and on two sides of the thickness direction of the lap joint section, the superposed prefabricated bottom plates are partially erected on the top of the shear wall body, an avoidance space is formed between the two superposed prefabricated bottom plates, namely the lap joint section position and the position connected with the cast-in-place section, a floor cast-in-place layer 10 is poured on the surfaces of the superposed prefabricated bottom plates, and the floor cast-in-place layer and the connected cast-in-place section can be effectively combined into a whole finally, so that the integral firmness is;

in order to guarantee assembly stability, shear force wall body is close to bottom one side and has seted up two at least supplementary mounting holes 11 on the surface, supplementary mounting hole link up the shear force wall body setting, be provided with a supporting beam 12 in the supplementary mounting hole, a supporting beam both ends all are provided with portal 13, the door beam of portal passes through hoist and mount subassembly 14 and is connected with a supporting beam, the supporting leg butt of portal is on the surface of coincide prefabricated bottom plate, through the setting of a plurality of supporting beams and corresponding portal, make shear force wall body form the supporting legs structure on the both sides of thickness direction, guarantee can also fixed position after removing hoist and mount instrument, and hoist and mount subassembly can adjust the height of supporting beam, thereby effectively adjust the vertical relative position of adjacent shear force wall body, two hoist and mount subassembly's altitude mixture control can also be used for the adjustment to shear force wall. Specifically, the hoisting assembly comprises a hoisting bolt 17, the bottom of the hoisting bolt penetrates through a door beam and a supporting beam and is connected with a bottom limiting end 18, a limiting gasket 19 and an adjusting nut 20 are arranged at the top of the hoisting bolt, the hoisting bolt can be adjusted up or down through rotation of the adjusting nut, and therefore the horizontal plane height of the bottom limiting end can be adjusted, namely the supporting beam can be adjusted in height, the assembly is convenient and reliable, the disassembly difficulty is low, and higher experience is not needed in the operation.

In order to ensure the stability of the support, the auxiliary mounting hole is positioned at the position of 10-20cm from the bottom of the wall body to the top direction, a hole forming mold is prefabricated in the auxiliary mounting hole, and the support beam cannot damage the wall body when supporting. The supporting leg and the door beam of foretell portal are square steel pipe, simple structure, easily obtain, and the supporting leg bottom is provided with drawing of patterns parcel layer, when dismantling, is convenient for effectively separate with the cast-in-place layer of floor. And the supporting beam is also made of square steel pipes, so that the use is stable and reliable.

During construction, the shear wall bodies on the adjacent upper layers and the superposed prefabricated bottom plates are hoisted in place, the support beams are inserted into the auxiliary mounting holes of the shear wall bodies on the adjacent upper layers, the door frames are erected at two ends of the support beams, the support beams are connected with the door frames through the hoisting assemblies, then the top vertical steel bars and the bottom vertical steel bars of the shear wall bodies on the adjacent upper layers and the shear wall bodies on the adjacent lower layers are matched through adjustment of the hoisting assemblies, the two shear wall bodies are abutted against and bound through binding wires to obtain lap sections, then formwork erecting is carried out, the positions of the lap sections are cast, and the formwork erecting and casting are common operation modes with low technical difficulty, small defects, high quality and convenience in inspection; and (4) removing the formwork after pouring, and pouring the surface of the laminated prefabricated bottom plate to obtain the floor slab, thereby finishing the operation.

Of course, the surface of the overlapped prefabricated bottom plate can be poured firstly, and the overlapped section is poured by the template after maintenance. The two pouring methods do not have the influence of pouring quality.

After the integral maintenance is finished, the portal frame, the hoisting assembly and the supporting beam are detached, and after the detachment, the bottom of the portal frame abuts against the surface of the superposed prefabricated bottom plate, so that after the surface of the superposed prefabricated bottom plate is poured, holes are reserved in pouring areas corresponding to the portal frame, the auxiliary mounting holes are not filled, and the integral integrity is ensured by manually filling concrete.

The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. The local cast-in-place type connecting node for the assembled concrete inner wall is characterized by comprising two shear walls which are arranged in an overlapped mode, wherein each shear wall comprises a wall body, vertical distribution reinforcing steel bars and horizontal distribution reinforcing steel bars are arranged in the wall body, two ends of each vertical distribution reinforcing steel bar extend out of the wall body and are divided into top vertical reinforcing steel bars and bottom vertical reinforcing steel bars, the top vertical reinforcing steel bars and the bottom vertical reinforcing steel bars between the adjacent upper wall and the lower wall are bound and fixed through binding wires to form an overlapped section, a plurality of cast-in-place area horizontal reinforcing steel bars are arranged in the overlapped section, stirrups are further arranged between the plurality of cast-in-place area horizontal reinforcing steel bars and the overlapped section, and the connected cast-in-place section is poured on the;

2. The fabricated concrete interior wall cast-in-place type connecting node in part according to claim 1, wherein the top vertical reinforcing bars and the bottom vertical reinforcing bars extend at least 20 times as long as D, which is the diameter of the vertically distributed reinforcing bars.

3. The fabricated concrete interior wall cast-in-place type connection node in part of claim 1, wherein the concrete grade of the connection cast-in-place section is greater than or equal to that of the shear wall body.

4. The fabricated concrete interior wall local cast-in-place type connection node according to claim 1, wherein the auxiliary mounting hole is located at a position of 10-20cm from the bottom of the wall body towards the top direction, and a hole forming mold is prefabricated in the auxiliary mounting hole.

5. The fabricated concrete inner wall local cast-in-place type connection node as claimed in claim 1, wherein the supporting legs and the door beam of the door frame are square steel pipes, and a demoulding wrapping layer is arranged at the bottom of the supporting legs.

6. The fabricated concrete inner wall cast-in-place type connection node in part according to claim 5, wherein the support beam is made of a square steel pipe.

7. The fabricated concrete inner wall local cast-in-place type connecting node as claimed in claim 6, wherein the hoisting assembly comprises a hoisting bolt, the bottom of the hoisting bolt passes through the door beam and the supporting beam and is connected with a bottom limiting end head, and a limiting gasket and an adjusting nut are arranged at the top of the hoisting bolt.