Fabricated building grouting connecting device

Abstract

The invention relates to the field of building construction, in particular to an assembly type building grouting connecting device which comprises a first prefabricated part and a second prefabricated part, the first prefabricated part is located above the second prefabricated part, a plurality of first steel bars are arranged in the first prefabricated part, and a grouting sleeve is fixed to the connecting end of each first steel bar; a plurality of exposed reinforcing steel bars II are arranged in the prefabricated part II, and the reinforcing steel bars II and the grouting sleeves are in one-to-one corresponding insertion fit; an annular rubber gasket is arranged between the first prefabricated part and the second prefabricated part, a grouting through cavity is defined by the annular rubber gasket, the first prefabricated part and the second prefabricated part, and lower ports of the grouting sleeves communicate with the grouting through cavity. The rubber gasket is arranged between the two prefabricated parts to form the grouting through cavity, grouting materials are reversely fed into the grouting sleeve from the lower end opening of the grouting sleeve one by one through the grouting through cavity, then the grouting sleeve is blocked, the grouting frequency is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to an assembled building grouting connection device. Background Art

[0002] With the increase of urban traffic volume and the aging of early transportation facilities, it has become an urgent need to increase the speed of highway bridge construction and reduce the interference of construction procedures on existing traffic. Prefabricated road bridges are widely used due to their advantages such as fast construction and reduced environmental impact. Prefabricated bridges refer to bridges that transfer a large amount of on-site work in traditional construction methods to factories, process and manufacture building components and accessories in factories, transport them to road construction sites, and assemble and install them on site through reliable connection methods.

[0003] The connection of prefabricated bridge piers has always been a key technology in the construction process. The existing construction uses grouting sleeves for vertical connection of prefabricated bridge piers. Grouting sleeves are also called grouting sleeve joints or sleeve grouting joints. Grouting sleeves are a combination of specially processed sleeves, matching grouting materials and steel bars. When connecting steel bars, fast-hardening non-shrinkage grouting materials are injected to connect the steel bars and sleeves by relying on the bonding and biting effect between the materials. However, in the construction of prefabricated bridges, a single grouting method is usually used, that is, a grouting outlet and a grouting outlet are set at the upper and lower positions of the sleeve. By blocking the lower end of the grouting sleeve, high-strength grouting material is poured from the lower grouting outlet. After the grouting sleeve is filled with grouting material, it flows out from the upper grouting outlet. After that, the grouting outlet can be blocked. This method has the following disadvantages: (1) The construction efficiency is low and the number of grouting is too large. Each grouting sleeve needs to be grouted separately. (2) During the grouting operation, some sleeves are prone to serious leakage, especially at the rubber plug at the end of the sleeve and the loose seals of the grouting layer, grouting port and grouting outlet. After the leakage, a long arc-shaped gap defect is formed on the top of the sleeve, and the filling density of the grouting material is insufficient, which will reduce the bonding and anchoring effect between the grouting material and the steel bars, affect the performance of the sleeve grouting joint, and reduce the strength of the grouting sleeve connection. Summary of the invention

[0004] Based on the above problems, the purpose of the present invention is to provide an assembled building grouting connection device, and the present invention adopts the following technical solutions:

[0005] The present invention provides a prefabricated building grouting connection device, comprising a prefabricated component 1 and a prefabricated component 2, wherein the prefabricated component 1 is located above the prefabricated component 2, a plurality of steel bars 1 are arranged in the prefabricated component 1, a grouting sleeve is fixed to the connection end of each of the steel bars 1, a plurality of exposed steel bars 2 are arranged in the prefabricated component 2, and each of the steel bars 2 and each of the grouting sleeves are plugged and matched with each other one by one; an annular rubber gasket is arranged between the prefabricated component 1 and the prefabricated component 2, each of the grouting sleeves is located above the enclosed area of ​​the annular rubber gasket, the annular rubber gasket and the prefabricated component 1 and the prefabricated component 2 are enclosed to form a grouting cavity, and the lower port of each of the grouting sleeves is communicated with the grouting cavity.

[0006] Preferably, a fixing ear seat is provided on the outer edge of the annular rubber gasket, and the fixing ear seat is fixed to the second prefabricated component by a screw.

[0007] Preferably, a sealing filling layer is provided on both the upper surface and the lower surface of the annular rubber gasket.

[0008] Preferably, the sealing filling is applying epoxy resin glue.

[0009] Preferably, a steel pad is provided between the prefabricated component 1 and the prefabricated component 2; the thickness of the steel pad is less than the thickness of the annular rubber gasket.

[0010] Preferably, except for the area enclosed by the annular rubber gasket, the other parts between the prefabricated component 1 and the prefabricated component 2 are filled with slurry.

[0011] Preferably, the grouting sleeve comprises a grouting cylinder body, a grouting cylinder cavity penetrating through the end thereof is arranged in the grouting cylinder body, an upper port of the grouting cylinder cavity is fixedly connected to the first steel bar, a lower port of the grouting cylinder cavity is plug-fitted with the second steel bar, a grouting outlet and a grouting port connected to the grouting cylinder cavity are arranged on the outer wall of the grouting cylinder body, and the grouting outlet is located above the grouting port.

[0012] Preferably, a movable baffle and an elastic member are provided in the grouting cylinder cavity, the elastic member is located above the movable baffle, one end of the elastic member is connected to the movable baffle, and the other end is connected to the grouting cylinder body.

[0013] Preferably, the elastic member is a spring.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are:

[0015] The present invention forms a grouting cavity by arranging a rubber gasket between two prefabricated components, and the grouting material is fed back into the interior of the grouting sleeve one by one from the lower port of the grouting sleeve through the grouting cavity, thereby sealing the grouting sleeve, reducing the number of grouting times and improving the construction efficiency; at the same time, the present invention applies pressure to the lower grouting material by applying pressure to the upper elastic part of the grouting sleeve, thereby ensuring that the grouting material is densely filled and the grouting quality is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a front view schematic diagram of the internal structure of the assembled building grouting connection device in the first embodiment of the present invention;

[0018] Figure 2 for Figure 1 Sectional view in the AA direction (schematic diagram of the cross-sectional structure of the assembled building grouting connection device in the middle);

[0019] Figure 3 It is a front view schematic diagram of the external structure of the assembled building grouting connection device in the first embodiment of the present invention;

[0020] Figure 4 It is a structural schematic diagram of a grouting sleeve in Embodiment 1 of the present invention;

[0021] Figure 5 It is a structural schematic diagram of a grouting sleeve in the second embodiment of the present invention;

[0022] Figure 6 It is a front view schematic diagram of the internal structure of the assembled building grouting connection device in the second embodiment of the present invention;

[0023] Figure 7 It is a schematic diagram of the cross-sectional structure of the middle part of the assembled building grouting connection device in the third embodiment of the present invention.

[0024] Explanation of the reference numerals: 1. Prefabricated component one; 2. Prefabricated component two; 3. Rebar one; 4. Grouting sleeve; 401. Grouting cylinder; 402. Grouting cylinder cavity; 403. Grouting outlet; 404. Grouting outlet; 5. Rebar two; 6. Annular rubber gasket; 601. Fixed ear seat; 7. Grouting cavity; 8. Sealing filling layer; 9. Steel pad; 10. Grouting filling; 11. Movable baffle; 12. Elastic member. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] Embodiment 1

[0027] like Figure 1 and 2 As shown, this embodiment discloses an assembled building grouting connection device, including a prefabricated component 1 and a prefabricated component 2. The prefabricated component 1 and the prefabricated component 2 are both made of concrete and can be prefabricated in a factory.

[0028] Prefabricated component 1 is located above prefabricated component 2. Prefabricated component 1 is provided with multiple steel bars 3. The connection end of each steel bar 3 is fixed with a grouting sleeve 4. The grouting sleeve 4 is also pre-buried in the prefabricated component 1. The lower end of the grouting sleeve 4 is exposed. Prefabricated component 2 is provided with multiple exposed steel bars 5. Each steel bar 5 and each grouting sleeve 4 are plugged and matched with each other one by one. During on-site construction, the exposed steel bars 5 of prefabricated component 2 are inserted into the grouting sleeve 4. After the component is installed and positioned, the grouting operation begins.

[0029] An annular rubber gasket 6 is arranged between prefabricated component 1 and prefabricated component 2 2 , and each grouting sleeve 4 is located above the enclosed area of ​​the annular rubber gasket 6 . The annular rubber gasket 6 and the prefabricated component 1 1 and prefabricated component 2 2 enclose a grouting cavity 7 , and the lower port of each grouting sleeve 4 is connected to the grouting cavity 7 .

[0030] In this embodiment, a fixing ear seat 601 is provided on the outer edge of the annular rubber gasket 6, and the fixing ear seat 601 is fixed to the prefabricated component 2 2 by means of a screw.

[0031] In this embodiment, the upper and lower surfaces of the annular rubber gasket 6 are both provided with a sealing filling layer 8. The sealing filling layer 8 ensures the tightness of the annular rubber gasket 6 when in contact with the prefabricated component 1 and the prefabricated component 2, and ensures the airtightness of the grouting cavity 7 formed by enclosing. As a method for ensuring the airtightness of the grouting cavity 7, the sealing filling 8 can be specifically applied with epoxy resin glue.

[0032] In this embodiment, a steel pad 9 is further arranged between prefabricated component 1 and prefabricated component 2 2; the steel pad 9 is arranged outside the area where the grouting cavity 7 is located, and the number of steel pads 9 can be multiple and distributed at the central position of the connection area between prefabricated component 1 and prefabricated component 2 2; the thickness of the steel pad 9 is less than the thickness of the annular rubber gasket 6.

[0033] In this embodiment, except for the area enclosed by the annular rubber gasket 6 and the area occupied by the steel pad 9, the other parts between the prefabricated component 1 and the prefabricated component 2 2 are provided with slurry filling 10.

[0034] The construction and use process of the present invention: In this embodiment, the annular rubber gasket 6 is in the shape of a runway, and the cross-section of the prefabricated component 2 is square. Four annular rubber gaskets 6 are arranged on the top of the prefabricated component 2, and epoxy resin is applied on the upper and lower surfaces of the annular rubber gasket 6. Then, a circle of steel edges surrounds the annular rubber gasket 6 as a fixed ear seat 601. The fixed ear seat 601 expansion screws are fixed at the designated position on the top of the prefabricated component 2. Four steel pads 9 are placed in the middle of the prefabricated component 2. The steel pads 9 are square, and the thickness of the steel pads 9 is slightly smaller than the thickness of the annular rubber gasket 6. Except for the area surrounded by the annular rubber gasket 6 and the steel pad 9 area, the other parts of the top of the prefabricated component 2 are filled with slurry 10.

[0035] The lower end of the grouting sleeve 4 is aligned with the lower steel bar 2 5, and the deviation should be within a certain range. When the prefabricated component 1 is pressed down, the annular rubber gasket 6 is first connected, and the annular rubber gasket 6 is squeezed to a certain extent and fits more tightly with the upper prefabricated component 1, so that the gap between the annular rubber gasket 6 and the prefabricated component 1 and the prefabricated component 2 is filled with epoxy resin. The prefabricated component 1 continues to be pressed down until it is in close contact with the steel pad 9 and then stops.

[0036] After waiting for the epoxy resin and the grouting material to finally set, the annular rubber gasket 6 and the prefabricated component 1 and the prefabricated component 2 are enclosed to form a grouting cavity 7. The grouting sleeve 4 located in the middle of the grouting cavity 7 is selected for grouting, and grouting is performed from the grouting port 404 of the grouting sleeve 4. The high-strength grouting material is poured in. As the grouting material accumulates in the grouting cavity 7, it is then fed back into the interior of the remaining grouting sleeves 4 from the lower port of the grouting sleeve 4 one by one. The grouting ports 404 of the other grouting sleeves 4 are not closed first. As the grouting material accumulates, whichever grouting port 404 overflows will be blocked. Finally, the grouting material fills the entire blocked grouting sleeve 4 and flows out from the grouting port 403.

[0037] like Figure 3 and 4 As shown, it should be noted that the grouting sleeve 4 includes a grouting cylinder body 401, and a grouting cylinder cavity 402 is provided in the grouting cylinder body 401 and passes through its end. The upper port of the grouting cylinder cavity 402 is generally fixedly connected to the steel bar 3 by a thread, and the lower port of the grouting cylinder cavity 402 is plugged into the steel bar 2 5. The outer wall of the grouting cylinder body 401 is provided with a grouting port 403 and a grouting port 404 that are connected to the grouting cylinder cavity 402, and the grouting port 403 is located above the grouting port 404.

[0038] The grouting port 403 and the grouting port 404 penetrate the prefabricated component 1 and are exposed on the outside of the prefabricated component 1, which makes it easy to connect the grouting equipment with the grouting port 404 and to facilitate personnel to judge the grouting situation by whether the grouting material flows out of the grouting port 403.

[0039] Embodiment 2

[0040] The grouting sleeve 4 is also called a grouting sleeve joint or a sleeve grouting joint. When the prefabricated components are manufactured, the sleeve will be pre-buried in the connecting end of the component. During on-site construction, the exposed steel bar of another connecting component is inserted into the sleeve. After the component is installed and positioned, the grouting operation begins. During grouting, special grouting equipment is used to grout the grouting port 404 using the pressure grouting method. After the mortar flows out of the grouting port 403, it is immediately sealed. The above-mentioned traditional grouting methods have some limitations, such as complex construction operations, difficult to visually detect construction quality, and often incomplete grouting. Existing means of detecting the saturation of the grouting sleeve, such as the X-ray industrial CT method, the pre-buried steel wire pulling method, etc., have the disadvantages of high equipment environment requirements, high detection costs, and susceptibility to interference from on-site construction.

[0041] To avoid the above problems, this embodiment optimizes the structure of the grouting sleeve 4 based on the technology of the first embodiment. Figure 5 and 6 As shown, specifically, a movable baffle 11 and an elastic member 12 are provided in the grouting cylinder cavity 402, the movable baffle 11 is in close contact with the grouting cylinder cavity 402, the elastic member 12 is located above the movable baffle 11, one end of the elastic member 12 is connected to the movable baffle 11, and the other end is connected to the grouting cylinder body 401. The elastic member 12 can be specifically a spring.

[0042] During grouting, the grouting material slowly accumulates at the upper movable baffle 11 of the grouting tube cavity 402. Since the movable baffle 11 and the grouting tube cavity 402 are in close contact, the movable baffle 11 is initially located below the grouting outlet 403, and the movable baffle 11 blocks the grouting material from flowing out of the grouting outlet 403, thereby allowing the grouting material to flow into other places that need to be filled. When the pressure of the grouting tube cavity 402 is large enough, the elastic member 12 on the upper part of the movable baffle 11 is compressed until the movable baffle 11 moves above the grouting outlet 403, and the high-strength grouting material flows out of the grouting outlet 403 to remind the construction personnel that it is full. In this way, the high-strength slurry can fully fill the entire interior of the grouting sleeve 4, especially the space above the grouting outlet 403, so that the slurry and the structural steel bars and embedded parts are fully gripped and bonded, providing a safe bonding force and improving the stability of the structure.

[0043] Embodiment 3

[0044] like Figure 7 As shown, in this embodiment, the annular rubber gasket 6 is in a circular shape, the cross section of the prefabricated component 2 is circular, and the number of the steel pad 9 is one and is circular. The rest of the structure is the same as that of the first or second embodiment.

[0045] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An assembled building grouting connection device, comprising a prefabricated component 1 (1) and a prefabricated component 2 (2), wherein the prefabricated component 1 (1) is located above the prefabricated component 2 (2), a plurality of steel bars 1 (3) are arranged in the prefabricated component 1 (1), a grouting sleeve (4) is fixed to the connection end of each of the steel bars 1 (3), a plurality of exposed steel bars 2 (5) are arranged in the prefabricated component 2 (2), and each of the steel bars 2 (5) and each of the grouting sleeves (4) are plugged and matched with each other in a one-to-one correspondence; characterized in that: An annular rubber gasket (6) is arranged between the prefabricated component one (1) and the prefabricated component two (2); each of the grouting sleeves (4) is located above the enclosed area of ​​the annular rubber gasket (6); the annular rubber gasket (6) and the prefabricated component one (1) and the prefabricated component two (2) enclose a grouting cavity (7); and the lower port of each of the grouting sleeves (4) is communicated with the grouting cavity (7).

2. The assembled building grouting connection device according to claim 1 is characterized in that: The outer edge of the annular rubber gasket (6) is provided with a fixing ear seat (601), and the fixing ear seat (601) is fixed to the second prefabricated component (2) by means of a screw.

3. The assembled building grouting connection device according to claim 1 is characterized in that: The upper surface and the lower surface of the annular rubber gasket (6) are both provided with a sealing filling layer (8).

4. The assembled building grouting connection device according to claim 3 is characterized in that: The sealing filling (8) is to apply epoxy resin glue.

5. The assembled building grouting connection device according to claim 1 is characterized in that: A steel pad (9) is provided between the prefabricated component one (1) and the prefabricated component two (2); the thickness of the steel pad (9) is smaller than the thickness of the annular rubber gasket (6).

6. The assembled building grouting connection device according to claim 1, characterized in that: Except for the area enclosed by the annular rubber gasket (6), the other parts between the prefabricated component 1 (1) and the prefabricated component 2 (2) are provided with mortar filling (10).

7. The assembled building grouting connection device according to claim 1 is characterized in that: The grouting sleeve (4) comprises a grouting cylinder body (401), wherein the grouting cylinder body (401) is provided with a grouting cylinder cavity (402) penetrating through the end thereof, the upper end of the grouting cylinder cavity (402) is fixedly connected to the first steel bar (3), and the lower end of the grouting cylinder cavity (402) is plug-fitted to the second steel bar (5), and the outer wall of the grouting cylinder body (401) is provided with a grouting outlet (403) and a grouting outlet (404) which are connected to the grouting cylinder cavity (402), and the grouting outlet (403) is located above the grouting outlet (404).

8. The assembled building grouting connection device according to claim 7, characterized in that: A movable baffle (11) and an elastic member (12) are provided in the grouting cylinder cavity (402); the elastic member (12) is located above the movable baffle (11); one end of the elastic member (12) is connected to the movable baffle (11), and the other end is connected to the grouting cylinder body (401).

9. The assembled building grouting connection device according to claim 8, characterized in that: The elastic member (12) is a spring.

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