Prefabricated shear wall connecting joint and connecting method

Abstract

The present application relates to a kind of prefabricated shear wall connecting node and connecting method, the connecting node includes two groups of fixed plate for being fixed in two pieces of prefabricated shear wall respectively and being wavy, and for pouring the node cast-in-place concrete of two pieces of prefabricated shear wall fixed above and below, the fixed plate is along the length of the prefabricated shear wall width direction arrangement, the crest of the fixed plate extends out the prefabricated shear wall, the reinforcing bar of the prefabricated shear wall extends out the prefabricated shear wall and is fixed with the fixed plate, the crest of the fixed plate is equipped with straight section, the straight section of two groups of the fixed plate is one-to-one corresponding butt joint fixed.The present application solves the technical problems that prefabricated shear wall connecting node construction is complex in prior art, and construction quality is difficult to guarantee.The connecting node of the present application cancels traditional grouting sleeve, and lateral does not need to set up construction temporary support when prefabricated shear wall construction site is installed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building construction, in particular to a prefabricated shear wall connecting node and connecting method. BACKGROUND

[0002] At present, the prefabricated shear wall connecting node of the commonly used assembly type shear wall system in the industry adopts a grouting sleeve node form, the grouting sleeve itself has a high cost, which leads to a high building construction cost; the grouting sleeve construction process is relatively complex and requires a higher level of workers, and due to the site operation environment and the grouting level of workers, the grouting density in the sleeve cannot be guaranteed, thereby affecting the construction quality of the overall building; after the construction is completed, the detection requirement for the grouting material in the sleeve is high, and even if the grouting in the sleeve is detected to be not dense, secondary repair cannot be performed, and there is a structural safety hazard. SUMMARY

[0003] In view of the above-mentioned deficiencies in the prior art, the present application provides a prefabricated shear wall connecting node and connecting method, which solves the technical problems of complex construction and difficult to guarantee the construction quality of the prefabricated shear wall connecting node in the prior art.

[0004] In a first aspect, the present application discloses a prefabricated shear wall connecting node, comprising two groups of fixed plates arranged in a wave shape for being fixed in two prefabricated shear walls respectively, and node cast-in-place concrete for pouring and fixing the two prefabricated shear walls, each group of fixed plates comprises at least two fixed plates arranged at intervals along the thickness direction of the prefabricated shear wall, the fixed plates are arranged along the length direction of the prefabricated shear wall, the wave crests of the fixed plates extend out of the prefabricated shear wall, the reinforcing bars of the prefabricated shear wall extend out of the prefabricated shear wall and are fixed with the fixed plates, the wave crests of the fixed plates are provided with flat sections, the two groups of fixed plates are vertically opposite and are fixed by the flat sections one by one.

[0005] The prefabricated shear wall connecting node is further improved in that a plurality of stiffening plates are arranged at intervals and perpendicularly between the two adjacent fixed plates in each group along the length direction of the fixed plates, the stiffening plates on the two groups of fixed plates are vertically opposite and are fixed by connecting plates.

[0006] The prefabricated shear wall connecting node is further improved in that the stiffening plates and the connecting plates are fixed by single-sided bolts, and mounting holes are formed in the stiffening plates and the connecting plates for mounting the single-sided bolts.

[0007] The prefabricated shear wall connecting node is further improved in that a prefabricated floor slab is connected between the upper and lower prefabricated shear walls, and the wave troughs of the two groups of fixed plates are surrounded to form a space for the reinforcing bars of the prefabricated floor slab to pass through.

[0008] The prefabricated shear wall connecting node is further improved in that the prefabricated floor is poured with a cast-in-place floor, and the cast-in-place floor is fixed with the node cast-in-place concrete.

[0009] In a second aspect, the application further provides a prefabricated shear wall connecting method, comprising the following steps: manufacturing two groups of fixed plates in a wave shape, the number of fixed plates in each group is at least two, and a flat section is arranged at the wave crest of the fixed plate; constructing prefabricated shear walls, fixing two groups of fixed plates along the length direction of the prefabricated shear wall in two prefabricated shear walls respectively, so that the fixed plates in each group are fixed in the thickness direction of the prefabricated shear wall, and the wave crest extends out of the prefabricated shear wall, and the reinforcing steel bars of the prefabricated shear wall extend out of the prefabricated shear wall and are fixed with the fixed plates; installing the prefabricated shear walls, placing two prefabricated shear walls up and down, so that the two groups of fixed plates are opposite to each other, and the two groups of fixed plates are fixed one by one through the flat sections, and then the node cast-in-place concrete is poured to fix the upper and lower prefabricated shear walls.

[0010] The prefabricated shear wall connecting node is further improved in that, when manufacturing two groups of fixed plates in a wave shape, a plurality of stiffening plates are fixed in the length direction of the fixed plate and perpendicularly between the two adjacent fixed plates in each group; when installing the prefabricated shear walls, before fixing the two groups of fixed plates one by one through the flat sections, the stiffening plates on the two groups of fixed plates are opposite to each other, and are fixed through the connecting plates.

[0011] The prefabricated shear wall connecting node is further improved in that the stiffening plates and the connecting plates are both provided with mounting holes, and when fixing the stiffening plates on the two adjacent prefabricated shear walls through the connecting plates, the stiffening plates and the connecting plates are fixed through the single-side bolts passing through the corresponding mounting holes.

[0012] The prefabricated shear wall connecting node is further improved in that, when constructing the prefabricated shear walls, the prefabricated floor is also constructed; when installing the prefabricated shear walls, before pouring the node cast-in-place concrete around the fixed plates, the reinforcing steel bars of the prefabricated floor pass through the space formed around the two groups of fixed plates, and when pouring the node cast-in-place concrete around the fixed plates, the reinforcing steel bars of the prefabricated floor are anchored in the node cast-in-place concrete.

[0013] The present application has positive and obvious effects compared with the prior art. The present application connects the prefabricated shear wall through the wave-shaped fixed plate, reduces a large amount of steel bar binding construction, improves the strength of the node component, and solves the technical problems of the prior art, such as complex prefabricated shear wall connection node construction and difficult construction quality guarantee. The connection node of the present application cancels the traditional grouting sleeve, and the lateral side does not need to be provided with a construction temporary support during the installation of the prefabricated shear wall construction site, which facilitates the construction installation, effectively improves the construction speed and construction precision, and ensures the quality and safety performance of the whole structure after the prefabricated shear wall structure is poured. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 The present application is a prefabricated shear wall connection node structure perspective view.

[0016] Figure 2 The present application is an explosion perspective view of the prefabricated shear wall connection node.

[0017] Figure 3 The present application is a prefabricated shear wall structure perspective view of the prefabricated shear wall connection node.

[0018] Figure 4 The present application is a fixed plate connection structure schematic view of the prefabricated shear wall connection node.

[0019] Figure 5 The present application is a fixed plate structure schematic view of the prefabricated shear wall connection node.

[0020] Figure 6 The present application is a fixed plate and prefabricated shear wall connection schematic view of the prefabricated shear wall connection node.

[0021] Figure 7 The present application is a fixed plate butt joint schematic view of the prefabricated shear wall connection node.

[0022] Figure 8 The present application is a prefabricated floor slab connection schematic view of the prefabricated shear wall connection node. DETAILED DESCRIPTION

[0023] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0024] As shown in Figures 1-8 The present application provides a prefabricated shear wall 1 connecting joint, which comprises two groups of fixed plates 3 arranged in a wave shape for being fixed in two prefabricated shear walls 1 respectively, and cast-in-situ concrete for pouring and fixing the two prefabricated shear walls 1, each group of the fixed plates 3 comprises at least two fixed blocks 3 arranged at intervals along the thickness direction of the prefabricated shear wall 1, the fixed plates 3 are arranged along the length direction of the prefabricated shear wall 1, the crests of the fixed plates 3 extend out of the prefabricated shear wall 1, the reinforcing bars 7 of the prefabricated shear wall 1 extend out of the prefabricated shear wall 1 and are fixed at the crests of the fixed plates 3, the crests of the fixed plates 3 are provided with flat sections, the two groups of the fixed plates 3 are opposite to each other and are fixed by the flat sections. In the embodiment, the edge of each prefabricated shear wall 1 is fixed with a group of fixed plates 3, each group of fixed plates 3 comprises two fixed plates 3, and the two fixed plates 3 are fixed on the longitudinal reinforcing bars of the two sides of the prefabricated shear wall 1, each longitudinal reinforcing bar corresponds to the position of the crest, so that the longitudinal reinforcing bar is fixed with the fixed plate 3 with the largest contact area, and the fixing firmness of the longitudinal reinforcing bar and the fixed plate 3 is ensured. When the prefabricated shear wall 1 is prefabricated, half of the structure of the fixed plate 3 is anchored in the prefabricated concrete, and the extended crest structure is used for the butt joint of the adjacent prefabricated shear wall 1. The fixed plate 3 is made of a honeycomb-shaped (crest and trough are arranged at intervals) steel plate cut from a steel plate. The crests of the joint plates of the upper and lower prefabricated shear walls 1 are connected by bevel fusion welding. The stiffening plate 5 of the present application has the function of supporting, and the fixed plate 3 also has a certain strength, so it can meet the supporting function, and therefore no additional temporary support is needed on the side surface, which facilitates the construction and installation and improves the construction efficiency.

[0025] Preferably, as shown in Figure 2 and Figure 5 In each group, a plurality of stiffening plates 5 are arranged at intervals and perpendicularly along the length direction of the fixed plate 3 between the two adjacent fixed plates 3, the stiffening plates on the two groups of fixed plates 3 are opposite to each other and are fixed by the connecting plates 6. The stiffening plates 5 of the two prefabricated shear walls 1 to be connected are arranged oppositely, and a stiffening plate 5 can be fixed at every several crests, the stiffening plate 5 is fixed perpendicularly to the axis of the fixed plate 3 at the crest position, and the stiffening plate 5 and the fixed plate 3 are integrally formed with the prefabricated shear wall 1 in the factory. The stiffening plate 5 can be fixed in advance before the connection of the fixed plate 3, so that the flat section of the fixed plate 3 can be accurately fixed.

[0026] Preferably, the stiffening plate 5 and the connecting plate 6 are fixed by single-sided bolts, and the stiffening plate 5 and the connecting plate 6 are provided with mounting holes for mounting the single-sided bolts. In the embodiment, two mounting holes are provided on each stiffening plate 5, and four mounting holes are provided on the connecting plate 6, and the positions of the four mounting holes correspond to the positions of the mounting holes of the upper and lower stiffening plates 5 after abutment, so that the single-sided bolts can simultaneously pass through the mounting holes of the stiffening plate 5 and the connecting plate 6 to fix the upper and lower prefabricated shear walls 1, and then subsequent flat section fixing construction is performed.

[0027] As shown in Figure 2 and Figure 8 , the prefabricated floor slab 4 is connected between the upper and lower prefabricated shear walls 1, and the valleys of the two groups of fixing plates 3 form spaces for the reinforcement 7 of the prefabricated floor slab 4 to pass through. Then, the reinforcement 8 of the prefabricated floor slab is also anchored at the connecting joint, so that the reinforcement 8 of the prefabricated floor slab can be effectively fixed with the prefabricated shear wall 1.

[0028] Preferably, the prefabricated floor slab 4 is poured with a cast-in-place floor slab 2, and the cast-in-place floor slab 2 is fixed with the joint cast-in-place concrete. In the prior art, the prefabricated floor slab 4 generally needs to form a double-layer structure with the cast-in-place floor slab 2 to meet the strength requirement, and in order to ensure the structural stability, the reinforcement of the cast-in-place floor slab 2 should also pass through the valleys of the fixing plates 3 and be bent to the outside of a fixing plate 3 far away, so that the connecting joint is completed when the cast-in-place floor slab 2 is poured, and the reinforcements of the prefabricated floor slab 4 and the cast-in-place floor slab 2 are anchored in the joint concrete.

[0029] On the other hand, the application also provides a prefabricated shear wall 1 connecting method, comprising the following steps: manufacturing two groups of fixing plates 3 in a wave shape, the number of fixing plates 3 in each group is at least two, and the peaks of the fixing plates 3 are provided with flat sections; constructing prefabricated shear walls 1, and fixing two groups of fixing plates 3 along the length direction of the prefabricated shear wall 1 in two prefabricated shear walls 1 respectively, so that the fixing plates 3 in each group are fixed in the thickness direction of the prefabricated shear wall 1, and the peaks extend out of the prefabricated shear wall 1, and the reinforcement 7 of the prefabricated shear wall extends out of the prefabricated shear wall 1 and is fixed at the peaks of the fixing plates 3; installing the prefabricated shear walls 1, placing two prefabricated shear walls 1 above and below, so that the two groups of fixing plates 3 are directly opposite, abutting and fixing the two groups of fixing plates 3 one by one through the flat sections, and then pouring joint cast-in-place concrete to fix the upper and lower prefabricated shear walls 1.

[0030] Preferably, when the two groups of fixed plates 3 are made in a wavy shape, a plurality of stiffening plates 5 are fixed between every two adjacent fixed plates 3 in each group and are spaced and perpendicular to the length direction of the fixed plates 3; when the prefabricated shear wall 1 is installed, the stiffening plates on the two groups of fixed plates 3 are arranged in pairs and are fixed by connecting plates 6 before the two groups of fixed plates 3 are butted and fixed by straight sections.

[0031] Preferably, mounting holes are formed on the stiffening plates 5 and the connecting plates 6, and when the stiffening plates 5 on two adjacent prefabricated shear walls 1 are fixed by connecting plates 6, the stiffening plates 5 and the connecting plates 6 are fixed by single-side bolts passing through the corresponding mounting holes.

[0032] Preferably, when the prefabricated shear wall 1 is constructed, the prefabricated floor 4 is also constructed; when the prefabricated shear wall 1 is installed, the reinforcing steel bars 7 of the prefabricated floor 4 are arranged in the space formed by the valleys of the upper and lower groups of fixed plates 3 before the joint cast-in-situ concrete is cast-in-situ around the fixed plates 3, and the reinforcing steel bars 7 of the prefabricated floor 4 are anchored in the joint cast-in-situ concrete when the joint cast-in-situ concrete is cast-in-situ around the fixed plates 3.

[0033] Preferably, when the joint cast-in-situ concrete is cast-in-situ around the fixed plates 3, the cast-in-situ floor 2 is cast on the prefabricated floor 4, and the concrete of the cast-in-situ floor 2 is filled to the joint connecting position of the prefabricated shear wall 1, so as to form the joint cast-in-situ concrete.

[0034] When the fixed plate 3 is made, the fixed plate is cut from a steel plate Figure 5 into a honeycomb-shaped steel plate (arranged with intervals between the peaks and valleys), and the stiffening plates 5 are arranged between every several peaks of the joint plates, as shown in Figure 6 , the vertical reinforcing steel bars of the prefabricated shear wall 1 are welded at the center of the peaks of the joint plates by double-face fillet welds, so as to form the prefabricated part of the prefabricated shear wall 1, and when the construction is carried out on site, the joint plates and the stiffening plates 5 between the joint plates of the upper and lower prefabricated shear walls 1 are connected by single-side joint plate bolts first, and then the upper and lower prefabricated shear walls 1 are connected by bevel groove penetration welding butt joint, so as to fix the upper and lower prefabricated shear walls 1, and if there is a floor, the composite floor is laid, as shown in Figure 4 and 7 , the reinforcing steel bars in the plate pass through and are anchored in the holes of the joint plate honeycomb, and after the joint connection is completed, the formwork is installed and the post-cast concrete is cast, so as to complete the shear wall connecting joint. Figure 8

[0035] ​The application connects the prefabricated shear wall through the wave-shaped fixed plate, reduces a large amount of steel bar binding construction, improves the strength of the node component, and solves the technical problems of the complex construction of the connecting node of the prefabricated shear wall in the prior art and the difficulty in guaranteeing the construction quality. The connecting node of the application cancels the traditional grouting sleeve, and the lateral of the prefabricated shear wall does not need to be provided with a construction temporary support during the installation at the construction site, which facilitates the construction installation, effectively improves the construction speed and construction precision, and guarantees the quality and safety performance of the whole structure after the prefabricated shear wall structure is poured and completed.

[0036] The parts not involved in the application are the same as or can be realized by the prior art. The above description is only the preferred embodiment of the application, and does not limit the application in any form. Although the application has been disclosed as above, it is not intended to limit the application. Any person skilled in the art can make some changes or modifications to the equivalent embodiments within the scope of the technical solution of the application without departing from the technical solution of the application. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the application still belong to the scope of the technical solution of the application.

Claims

1. A prefabricated shear wall connection node, characterized in that, The application relates to a node structure of a prefabricated shear wall, which comprises two groups of fixed plates fixed in two prefabricated shear walls in an upper and lower butt joint mode and in a wave shape, and node cast-in-situ concrete for pouring and fixing the two prefabricated shear walls.

2. The precast shear wall connection node according to claim 1, characterized in that, Each group of the fixed plates comprises at least two fixed plates arranged in a spacing mode along the thickness direction of the prefabricated shear wall, the fixed plates are arranged in a length-through mode along the width direction of the prefabricated shear wall, the wave crests of the fixed plates extend out of the prefabricated shear wall, the reinforcing steel bars of the prefabricated shear wall extend out of the prefabricated shear wall and are fixed with the fixed plates, the wave crests of the fixed plates are provided with flat sections, the two groups of the fixed plates are in an upper and lower butt joint mode and are fixed in a one-to-one butt joint mode through the flat sections.

3. The precast shear wall connection node according to claim 2, characterized in that, A plurality of stiffening plates are fixed in a spacing and vertical mode between the two adjacent fixed plates in each group along the length direction of the fixed plates, and the stiffening plates in the two groups are in a one-to-one butt joint mode through connecting plates.

4. The prefabricated shear wall connection joint of claim 1, wherein, The stiffening plates and the connecting plates are fixed through single-side bolts, and the stiffening plates and the connecting plates are provided with mounting holes for mounting the single-side bolts.

5. The prefabricated shear wall connection joint of claim 4, wherein, The prefabricated floor slabs are connected between the upper and lower prefabricated shear walls, and the wave troughs of the two groups of the fixed plates form spaces for the reinforcing steel bars of the prefabricated floor slabs to pass through.

6. A method of connecting prefabricated shear walls, characterized by The prefabricated floor slabs are poured with cast-in-situ floor slabs, and the cast-in-situ floor slabs are fixed with the node cast-in-situ concrete. The application relates to a node structure of a prefabricated shear wall, which comprises the following steps: Two groups of fixed plates in a wave shape are prepared, the number of the fixed plates in each group is at least two, and the wave crests of the fixed plates are provided with flat sections; The prefabricated shear walls are constructed, two groups of fixed plates are fixed in the two prefabricated shear walls in a length-through mode along the width direction of the prefabricated shear walls, the fixed plates in each group are fixed in a spacing mode along the thickness direction of the prefabricated shear walls, and the wave crests extend out of the prefabricated shear walls, and the reinforcing steel bars of the prefabricated shear walls extend out of the prefabricated shear walls and are fixed with the fixed plates; 7. The precast shear wall connection method according to claim 6, wherein, The prefabricated shear walls are installed, the two groups of the fixed plates are in an upper and lower butt joint mode, the two groups of the fixed plates are fixed in a one-to-one butt joint mode through the flat sections, and the node cast-in-situ concrete is poured to fix the upper and lower prefabricated shear walls. When the two groups of fixed plates in a wave shape are prepared, a plurality of stiffening plates are fixed in a spacing and vertical mode between the two adjacent fixed plates in each group along the length direction of the fixed plates; 8. The precast shear wall connection method according to claim 7, wherein, When the prefabricated shear walls are installed, the stiffening plates in the two groups are in a one-to-one butt joint mode through the connecting plates before the two groups of the fixed plates are fixed in a one-to-one butt joint mode through the flat sections.

9. The precast shear wall connection method according to claim 6, wherein, The stiffening plates and the connecting plates are provided with mounting holes, and the stiffening plates and the connecting plates are fixed through single-side bolts when the stiffening plates on the two adjacent prefabricated shear walls are fixed through the connecting plates. The prefabricated floor slabs are constructed simultaneously when the prefabricated shear walls are constructed; When the prefabricated shear walls are installed, the reinforcing steel bars of the prefabricated floor slabs pass through the spaces formed by the wave troughs of the two groups of the fixed plates before the node cast-in-situ concrete is poured and filled around the fixed plates, and the reinforcing steel bars of the prefabricated floor slabs are poured and anchored in the node cast-in-situ concrete when the node cast-in-situ concrete is poured and filled around the fixed plates.

10. The precast shear wall connection method of claim 9, wherein, When the cast-in-situ concrete of the filling joint around the fixed plate is poured, the cast-in-situ floor slab is poured on the prefabricated floor slab, and the concrete of the cast-in-situ floor slab is filled to the position of the joint of the prefabricated shear wall, so as to form the cast-in-situ concrete of the joint.

Images