Slurry anchor connecting mechanism for vertical profile steel of fabricated shear wall
By designing the slurry anchor connection mechanism on the vertical steel of the prefabricated shear wall, using the combination of square reserved grouting holes and built-in steel, the problems of unreliable shear bearing capacity and cumbersome construction operations of the prefabricated shear wall are solved, and fast and stable connections and high shear strength are achieved.
Patent Information
- Application Number
- CN202421806838.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The prefabricated shear wall has the problem of unreliable shear bearing capacity during the construction process, and the traditional connection method is cumbersome to operate, which affects the construction progress.
A slurry anchor connection mechanism for vertical steel of prefabricated shear wall was designed. By setting square reserved grouting holes and built-in steel on the top of the prefabricated shear walls of the lower and upper layers, a fast and stable connection was achieved using cement-based grouting material and small-segment angle steel.
It realizes a simple and fast construction process, improves the shear bearing capacity at the horizontal splicing interface of the prefabricated shear wall, saves labor costs, and expands the scope of use of the equipment.
Smart Images
Figure CN222822530U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of shear wall connection, in particular to a grout anchor connection mechanism of vertical steel sections of an assembled shear wall. Background Art
[0002] In order to reduce the labor cost of building structure construction site work and reduce the consumption of concrete formwork, the country vigorously advocates the promotion of prefabricated structures. Prefabricated structures are building structures whose components are produced in factories and then transported to construction sites for assembly.
[0003] At present, in the construction field of prefabricated shear walls, there are two main ways of assembling and connecting the upper and lower prefabricated walls: 1. Sleeve grouting connection of vertical steel bars; 2. Grout anchor connection of vertical steel bars. Sleeve grouting connection is to first embed a sleeve at the bottom of the upper wall, hoist the upper wall at the construction site to align it with the lower wall, and the uppermost vertical steel bar of the lower wall should be inserted into the sleeve, and then cement slurry is injected into the sleeve. After the cement slurry solidifies and hardens, the vertical steel bars in the upper and lower walls will have a connection effect. Grout anchor connection is to first reserve a vertical grouting hole at the bottom of the upper wall, hoist the upper wall at the construction site to align it with the lower wall, and the uppermost vertical steel bar of the lower wall should be inserted into the vertical grouting hole, and then cement slurry is injected into the hole. After the cement slurry solidifies and hardens, the vertical steel bars in the upper and lower walls will have a connection effect. The main problems with the above two traditional connection methods are: 1. There are multiple groups of vertical steel bars on the wall that need to be connected, and multiple sleeves need to be installed or multiple grouting channels need to be preset, which is cumbersome and affects the construction progress; 2. The shear wall is a horizontal shear-resistant component. The structural design requires that the shear bearing capacity of the prefabricated shear wall is equal to that of the cast-in-place shear wall. However, the prefabricated shear wall naturally has a horizontal splicing interface and discontinuous vertical steel bars, and its shear bearing capacity level is unreliable. It is advisable to find ways to improve the shear bearing capacity at the horizontal splicing interface of the prefabricated shear wall. In this regard, the utility model designs a grout-anchor connection mechanism for the vertical steel section of the prefabricated shear wall to solve the above problems. Utility Model Content
[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a slurry anchor connection mechanism for the vertical steel sections of the assembled shear wall, which effectively solves the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grout-anchor connection mechanism of a prefabricated shear wall vertical steel section, comprising a lower prefabricated shear wall, a floor slab is fixed on the top of the lower prefabricated shear wall, an upper prefabricated shear wall is arranged on the top of the floor slab, a plurality of square reserved grouting channels are arranged inside the lower ends of the lower prefabricated shear wall and the upper prefabricated shear wall, a plurality of internal steel sections are fixed on the top of the lower prefabricated shear wall and the upper prefabricated shear wall, and a plurality of internal steel sections are welded on the outside of each internal steel section. Small segment angle steels are arranged, and the distance between each two of the small segment angle steels is not more than 300mm. A mortar layer is arranged between the upper prefabricated shear wall and the floor slab. Two groups of horizontal distribution steels are fixed inside the lower prefabricated shear wall and the upper prefabricated shear wall respectively. Two groups of vertical distribution steel bars are also arranged inside the lower prefabricated shear wall and the upper prefabricated shear wall. Tie bars are welded between the two groups of vertical distribution steel bars. Concrete is poured inside the lower prefabricated shear wall and the upper prefabricated shear wall.
[0006] Preferably, the horizontal distribution steel and the vertical distribution steel bars are vertically distributed, and the horizontal distribution steel and the vertical distribution steel bars are fastened to each other by a plurality of connecting wires.
[0007] Preferably, the built-in steel sections on the lower prefabricated shear wall are slidably connected to the square reserved grouting channels on the upper prefabricated shear wall on top of it, each of the square reserved grouting channels is provided with a grouting port, and each of the grouting ports is provided with an air outlet at the top.
[0008] Preferably, each of the square reserved grouting holes is provided with a cement-based grouting material inside, and the cement-based grouting material is tightly fitted with the square reserved grouting hole and the built-in steel section.
[0009] Preferably, the side wall thickness of the square reserved grouting channel is not less than 50 mm, and the depth of the square reserved grouting channel is 30 mm higher than the exposed part of the built-in steel section.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] The utility model achieves the effect of simple and rapid construction and improving the shear bearing capacity at the horizontal splicing interface of the assembled shear wall through the vertical splicing method of the assembled shear wall, thereby saving labor. At the same time, the assembled structure can increase the use range of the entire equipment, thereby ensuring the splicing effect of the shear wall.
[0012] The utility model abandons the multiple connection construction operations of the vertical steel bars between the upper and lower walls. The connection method of the utility model only requires one slurry anchor connection for each 2-meter wall in the horizontal direction, thereby increasing the use range of the equipment and improving the connection efficiency, thereby ensuring the assembly effect. At the same time, the utility model adopts small steel as the connection key between the upper and lower walls to improve the shear strength of the horizontal joints of the assembled shear wall.
[0013] The utility model can make the built-in steel and the square reserved grouting channel fit closely by pouring cement-based grouting material in the grouting port, thereby ensuring the stability of the square reserved grouting channel and the built-in steel, thereby ensuring the stability of the lower prefabricated shear wall and the upper prefabricated shear wall; at the same time, due to the effect of the air outlet, the sealing of the square reserved grouting channel can be ensured, thereby ensuring the airtightness of the square reserved grouting channel and the built-in steel, thereby ensuring the safety of the entire equipment, thereby ensuring the shear strength of the lower prefabricated shear wall and the upper prefabricated shear wall. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.
[0015] In the attached picture:
[0016] Figure 1 It is an overall schematic diagram of the utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of the utility model;
[0018] Figure 3 It is a right side sectional view of the utility model.
[0019] In the figure: 1-lower precast shear wall; 2-upper precast shear wall; 3-floor slab; 4-square reserved grouting channel; 5-internal steel; 6-seating layer; 7-small segment angle steel; 8-horizontal distribution steel; 9-vertical distribution steel bar; 10-tension bar; 11-concrete; 12-cement-based grouting material; 13-connecting wire; 41-grouting port; 42-air outlet. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0021] Embodiment 1, by Figure 1-Figure 3 The utility model comprises a lower prefabricated shear wall 1, which is cast by concrete, and is used to support the floor 3. A floor 3 is fixed on the top of the lower prefabricated shear wall 1, and the floor 3 is cast by concrete. The floor 3 is used to support the upper prefabricated shear wall 2. An upper prefabricated shear wall 2 is arranged on the top of the floor 3, and the upper prefabricated shear wall 2 is cast by concrete. The upper prefabricated shear wall 2 is assembled by cooperating with the lower prefabricated shear wall 1, thereby increasing the use range of the wall. A plurality of square reserved injection moldings are arranged inside the lower ends of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2. The square reserved grouting hole 4 adopts a rectangular cavity structure. The cross-sectional length and width of the square reserved grouting hole 4 are 10 to 30 mm larger than the built-in ones. The tops of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2 are each fixed with a plurality of built-in steel sections 5. The built-in steel sections 5 adopt a No. 10 I-steel with a reinforcement bar. The dimensions of the built-in steel sections 5 are 100 mm high, 68 mm wide, 4.5 mm thick on the web, and 7.6 mm thick on the flange. A plurality of small segment angle steels 7 are welded to the outside of each of the built-in steel sections 5. The small segment angle steels 7 adopt an "L"-shaped structure. The small segment angle steels 7 are made of alloy material. The small segment angle steels 7 are 30 mm long and are spaced 2 meters apart. The distance between each of the small segment angle steels 7 is not greater than 300 mm. A mortar layer 6 is provided between the upper prefabricated shear wall 2 and the floor slab 3. The mortar layer 6 is cast with concrete. The mortar layer 6 is used to connect the upper prefabricated shear wall 2 and the floor slab 3, thereby ensuring the sealing of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2. Two groups of horizontal distribution steels 8 are fixed inside the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2. The horizontal distribution steels 8 are made of steel. Two groups of vertical distribution steel bars 9 are also provided inside the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2. The vertical distribution steel bars 9 are made of steel. The cooperation of the horizontal distribution steel 8 and the vertical distribution steel bar 9 can ensure the hardness of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2, thereby ensuring the safety of the entire equipment. A tie bar 10 is welded between the two groups of the vertical distribution steel bars 9. The tie bar 10 is made of steel material. The tie bar 10 is used to connect the two groups of the vertical distribution steel bars 9, thereby ensuring the stability of the vertical distribution steel bars 9, thereby ensuring the stability of the upper prefabricated shear wall 2 of the lower prefabricated shear wall 1. Concrete 11 is poured inside the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2, and the concrete 11 can ensure the safety of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2.
[0022] Embodiment 2, on the basis of embodiment 1, the horizontal distribution steel 8 and the vertical distribution steel bar 9 are vertically distributed, and the horizontal distribution steel 8 and the vertical distribution steel bar 9 are fastened and connected by a plurality of connecting wires 13, and the connecting wires 13 are made of iron material, and the connecting wires 13 are used to fix the horizontal distribution steel 8 and the vertical distribution steel bar 9, and the built-in steel section 5 on the lower prefabricated shear wall 1 is slidably connected with the square reserved grouting channel 4 on the upper prefabricated shear wall 2 at its top, and each of the square reserved grouting channels 4 is provided with a grouting port 41, and the grouting port 41 is used to pour the cement-based grouting material 12, and the top of each of the grouting ports 41 is provided with an air outlet 42, and the air outlet 42 is used to leak the air inside the square reserved grouting channel 4, so as to ensure the sealing between the square reserved grouting channel 4 and the cement-based grouting material 12, so as to ensure the pouring effect, and each of the square prefabricated A cement-based grouting material 12 is provided inside the reserved grouting channel 4, and the cement-based grouting material 12 is made of concrete. The cement-based grouting material 12 is used to connect the square reserved grouting channel 4 and the built-in steel 5. The cement-based grouting material 12 is tightly fitted with the square reserved grouting channel 4 and the built-in steel 5. The side wall thickness of the square reserved grouting channel 4 is not less than 50 mm, thereby ensuring the safety of the square reserved grouting channel 4, thereby ensuring the safety of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2. The depth of the square reserved grouting channel 4 is 30 mm higher than the exposed part of the built-in steel 5, thereby ensuring the pouring amount of the cement-based grouting material 12 inside the square reserved grouting channel 4, thereby ensuring the pouring effect, thereby ensuring the tightness of the connection between the square reserved grouting channel 4 and the built-in steel 5, thereby ensuring the safety of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2;
[0023] Before using this equipment, the staff fixes the multiple horizontal distribution steels 8 and the multiple vertical distribution steel bars 9 through the multiple connecting wires 13 as required, and further the staff welds the multiple tension bars 10 between the two groups of the vertical distribution steel bars 9 to ensure the stability of the horizontal distribution steels 8 and the vertical distribution steel bars 9, and further the staff puts the assembled horizontal distribution steels 8 and the vertical distribution steel bars 9 into the required casting mold, and further the staff casts the concrete 11 as required, and further the staff welds the multiple small segment angle steels 7 to the built-in steel sections 5, and further inserts the multiple built-in steel sections 5 at the top of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2. At this time, due to the mold reason, the square reserved grouting channels 4 can be formed at the lower ends of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2, and the casting is further completed, so that the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2 It can be assembled, and further the staff drills the grouting port 41 and the air outlet 42 on the square reserved grouting channel 4, and further the staff starts the assembly work. The staff installs the lower prefabricated shear wall 1 at the desired position through concrete, and further the staff puts the upper prefabricated shear wall 2 on the top of the lower prefabricated shear wall 1. At this time, the built-in steel 5 is inserted into the square reserved grouting channel 4 at the top thereof, and further the staff pours the cement-based grouting material 12 into the grouting port 41. At this time, the cement-based grouting material 12 fills the square reserved grouting channel 4, and forms the mortar layer 6 between the upper prefabricated shear wall 2 and the floor slab 3. At this time, the excess cement-based grouting material 12 leaks from the air outlet 42, thereby ensuring the sealing of the built-in steel 5 and the square reserved grouting channel 4, thereby completing the assembly, thereby ensuring the stability of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2.
[0024] The working process of the utility model is as follows: before using the equipment, the staff fixes the plurality of horizontal distribution steels 8 and the plurality of vertical distribution steel bars 9 through the plurality of connecting wires 13 as required, and further the staff welds the plurality of tension bars 10 between the two groups of the vertical distribution steel bars 9 to ensure the stability of the horizontal distribution steels 8 and the vertical distribution steel bars 9, and further the staff puts the assembled horizontal distribution steels 8 and the vertical distribution steel bars 9 into the required casting mold, and further the staff casts the concrete 11 as required, and further the staff welds the plurality of small segment angle steels 7 to the built-in steel sections 5, and further inserts the plurality of built-in steel sections 5 at the top of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2. At this time, due to the mold reason, the square reserved grouting channels 4 can be formed at the lower ends of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2, and the casting is further completed, so that the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2 are The prefabricated shear wall 2 can be assembled, and the staff further drills the grouting port 41 and the air outlet 42 on the square reserved grouting channel 4, and then the staff starts the assembly work. The staff installs the lower prefabricated shear wall 1 at the desired position through concrete, and then the staff puts the upper prefabricated shear wall 2 on the top of the lower prefabricated shear wall 1. At this time, the built-in steel 5 is inserted into the square reserved grouting channel 4 at the top thereof, and then the staff pours the cement-based grouting material 12 into the grouting port 41. At this time, the cement-based grouting material 12 fills the square reserved grouting channel 4, and forms the mortar layer 6 between the upper prefabricated shear wall 2 and the floor slab 3. At this time, the excess cement-based grouting material 12 leaks from the air outlet 42, thereby ensuring the sealing of the built-in steel 5 and the square reserved grouting channel 4, thereby completing the assembly, thereby ensuring the stability of the lower prefabricated shear wall 1 and the upper prefabricated shear wall 2.
[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. The grout-anchor connection mechanism of the vertical steel of the assembled shear wall is characterized by: The invention comprises a lower prefabricated shear wall (1), a floor slab (3) being fixed on the top of the lower prefabricated shear wall (1), an upper prefabricated shear wall (2) being arranged on the top of the floor slab (3), a plurality of square reserved grouting holes (4) being arranged inside the lower ends of the lower prefabricated shear wall (1) and the upper prefabricated shear wall (2), a plurality of internal steel sections (5) being fixed on the top of the lower prefabricated shear wall (1) and the upper prefabricated shear wall (2), a plurality of small segment angle steels (7) being welded to the outside of each of the internal steel sections (5), and the distance between each two of the small segment angle steels (7) being 1.3mm and 1.6mm, respectively. The distance between the upper prefabricated shear wall (2) and the floor slab (3) is no more than 300 mm, a mortar layer (6) is provided between the upper prefabricated shear wall (2) and the floor slab (3), two groups of horizontal distribution steel (8) are fixed inside the lower prefabricated shear wall (1) and the upper prefabricated shear wall (2), two groups of vertical distribution steel bars (9) are also provided inside the lower prefabricated shear wall (1) and the upper prefabricated shear wall (2), tie bars (10) are welded between the two groups of vertical distribution steel bars (9), and concrete (11) is poured inside the lower prefabricated shear wall (1) and the upper prefabricated shear wall (2).
2. The grout-anchor connection mechanism for the vertical steel section of the assembled shear wall according to claim 1 is characterized in that: The horizontal distribution steel (8) and the vertical distribution steel bars (9) are vertically distributed, and the horizontal distribution steel (8) and the vertical distribution steel bars (9) are fastened and connected via a plurality of connection wires (13).
3. The grout-anchor connection mechanism for the vertical steel section of the assembled shear wall according to claim 1 is characterized in that: The built-in steel sections (5) on the lower prefabricated shear wall (1) are slidably connected to the square reserved grouting channels (4) on the upper prefabricated shear wall (2) at the top thereof; each of the square reserved grouting channels (4) is provided with a grouting port (41); and each of the grouting ports (41) is provided with an air outlet (42) at the top.
4. The grout-anchor connection mechanism for the vertical steel section of the assembled shear wall according to claim 3 is characterized in that: Each of the square reserved grouting holes (4) is provided with a cement-based grouting material (12) inside, and the cement-based grouting material (12) is tightly fitted to the square reserved grouting holes (4) and the built-in steel sections (5).
5. The grout-anchor connection mechanism for the vertical steel section of the assembled shear wall according to claim 4 is characterized in that: The side wall thickness of the square reserved grouting channel (4) is not less than 50 mm, and the depth of the square reserved grouting channel (4) is 30 mm higher than the exposed portion of the built-in steel section (5).