Shear wall body connecting mechanism and shear wall comprising same

Abstract

The invention discloses a shear wall body connecting mechanism and a shear wall comprising the shear wall body connecting mechanism, and relates to the technical field of shear walls.The shear wall body connecting mechanism comprises a hollow grouting sleeve, a grouting pipe and a grout outlet pipe; the bottom end of the embedded steel bar fixing piece is located in the hollow grouting sleeve, the top end of the embedded steel bar fixing piece is located outside the hollow grouting sleeve, and the embedded steel bar fixing piece is rotationally connected with the hollow grouting sleeve and used for being connected with wall embedded steel bars; through mutual cooperation of the auxiliary butt joint pipe, the negative pressure cavity, the elastic metal sheet, the plugging part, the avoiding groove and the like, the auxiliary butt joint pipe is connected with the lower shear wall steel bar in a sleeving mode, and the auxiliary butt joint pipe connected with the lower prefabricated wall steel bar in a sleeving mode smoothly enters the hollow grouting sleeve; and therefore, quick butt joint of the hollow grouting sleeve and the reinforcing steel bars of the lower prefabricated wall is achieved, and the butt joint efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shear walls, and particularly to a shear wall connection mechanism and a shear wall including the same. Background Art

[0002] Walls can be divided into load-bearing walls and shear walls according to their stress characteristics. The former mainly bears vertical loads, such as masonry walls; the latter mainly bears horizontal loads.

[0003] A shear wall is also known as a wind-resistant wall, seismic wall or structural wall. It is a wall in a building or structure that mainly bears the horizontal load and vertical load (gravity) caused by wind load or seismic action, preventing the structure from shear (shearing) failure. It is divided into plane shear walls and tube shear walls. Plane shear walls are used in reinforced concrete frame structures, lift-slab structures, and flat slab floor systems. To increase the stiffness, strength and anti-collapse ability of the structure, cast-in-place or precast reinforced concrete shear walls can be used at certain parts. The cast-in-place shear wall is cast simultaneously with the surrounding beams and columns, with good integrity. Tube shear walls are used in high-rise buildings, high-rise structures and selected structures, surrounded by the partition walls of elevator shafts, stairwells, equipment and auxiliary rooms. The tube walls are all cast-in-place reinforced concrete walls, and their stiffness and strength can bear greater horizontal loads compared to plane shear walls.

[0004] Prefabricated buildings often use sleeve grouting technology for docking. During grouting, the grouting pipe is docked with the grout inlet. When slurry flows out of the grout outlet, the grouting pipe is quickly pulled out, and the grout inlet and grout outlet are blocked with plugs. When the grouting pipe is pulled out, some slurry in the sleeve flows back under the free flow of the slurry, resulting in a lack of slurry in the upper part of the sleeve, leading to a reduction in density. At the same time, after docking, manual operation is required to block the grout inlet and grout outlet. Improper manual blocking or accidental touching easily causes the plug to fall off. At the same time, when the existing sleeve is docked with the steel bar, a mirror is often placed on the ground to observe whether the sleeve and the steel bar are aligned. If not, adjustments are made according to the actual situation observed in the mirror to align the two.

[0005] Therefore, it is very necessary to propose a shear wall connection mechanism and a shear wall including the same by the present invention to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a shear wall connection mechanism, a shear wall including the same, and its production process to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A shear wall connection mechanism, including a hollow grouting sleeve, a grouting pipe and a slurry outlet pipe, further including a pre-embedded steel bar fixing member with its bottom end located inside the hollow grouting sleeve and its top end located outside the hollow grouting sleeve and rotatably connected to the hollow grouting sleeve, which is used to connect with the wall pre-embedded steel bars; An auxiliary docking pipe with a lid at the top, which is movably placed inside the hollow grouting sleeve, and its top side wall and bottom are both connected to the inner cavity of the hollow grouting sleeve. When its top moves to the middle of the hollow grouting sleeve, it is slidably connected to the hollow grouting sleeve up and down. When its top moves to the top of the hollow grouting sleeve, it is hermetically slidably connected to the hollow grouting sleeve in a spiral manner; A negative pressure cavity, which is arranged at the top of the auxiliary docking pipe, and its inner wall is connected to the inner cavity of the hollow grouting sleeve through a plurality of communication holes distributed in an array; A plurality of elastic metal sheets, which are placed at the top of the auxiliary docking pipe, and are corresponding to the communication holes, and are used to block the communication holes; A metal plate, whose top cooperates with the pre-embedded steel bar fixing member to push the elastic metal sheet to deform, so that the negative pressure cavity is communicated with the inner cavity of the hollow grouting sleeve, and its middle part can be clamped and cooperated with the peripheral side wall of the pre-embedded steel bar fixing member; A blocking part, which is placed on the outer wall of the auxiliary docking pipe, and is used to block the grouting pipe and the slurry outlet pipe; An avoidance groove, which is placed on the side wall of the auxiliary docking pipe, and is used to make the lower part of the blocking part have a space for elastic deformation; A diversion groove, which is opened at the top of the inner cavity of the hollow grouting sleeve, and is used to guide the slurry at the lower part of the auxiliary docking pipe to the upper part of the auxiliary docking pipe after the metal plate is clamped with the pre-embedded steel bar fixing member.

[0008] Preferably, the pre-embedded steel bar fixing member includes a rotating sleeve, and a threaded docking groove is opened on the inner wall of the top of the rotating sleeve, and an annular protrusion for clamping and cooperating with the metal plate is provided on the peripheral side wall of its bottom.

[0009] Preferably, the metal plate includes a vertical fixing plate, and an arc-shaped guiding angle part is provided at the top end of the side opposite to the outer wall of the pre-embedded steel bar fixing member of the vertical fixing plate, and a clamping groove for cooperating with the pre-embedded steel bar fixing member is opened in the middle of the side opposite to the outer wall of the pre-embedded steel bar fixing member of the vertical fixing plate.

[0010] Preferably, the grouting pipe is placed on the bottom side wall of the hollow grouting sleeve and is connected to the inside of the hollow grouting sleeve; The slurry outlet pipe is placed on the top side wall of the hollow grouting sleeve and is connected to the inside of the hollow grouting sleeve.

[0011] Preferably, it further includes a one-way valve, which is placed at the bottom of the negative pressure chamber and communicates with the inner cavity of the auxiliary docking pipe, and can only allow the air flow in the negative pressure chamber to flow outwards.

[0012] Preferably, the blocking part includes a non-elastic blocking section, which is placed on the upper side wall of the auxiliary docking pipe and is used for blocking the grout outlet pipe. An elastic blocking section, which is placed at the bottom of the non-elastic blocking section and is used for blocking the grouting pipe.

[0013] Preferably, the auxiliary docking pipe includes a docking pipe body. Two grout inlet grooves are symmetrically opened at the bottom of the docking pipe body, which can enable the grout injected into the grouting pipe to quickly enter the docking pipe body through the grout inlet grooves. An outlet is opened on the side wall of the top of the docking pipe body, which is opened at the top of the docking pipe body and can enable the liquid in the docking pipe body to enter the grout outlet pipe through the outlet.

[0014] Preferably, The auxiliary docking pipe further includes a sealing ring, which is sleeved on the outer wall of the docking pipe body and is located above the grouting pipe. A guiding block, which is placed on the outer wall of the sealing ring and is helically slidably connected to the top of the hollow grouting sleeve through a spiral guiding groove and is slidably connected to the middle of the hollow grouting sleeve through a limiting sliding groove.

[0015] Preferably, the hollow grouting sleeve includes a sleeve body. The limiting sliding groove is opened in the middle of the inner cavity wall of the sleeve body. The spiral guiding groove is opened at the top of the inner cavity wall of the sleeve body. The limiting sliding groove communicates with the spiral guiding groove. The diversion groove is opened on the inner wall of the top end of the spiral guiding groove.

[0016] The present invention also provides a shear wall body, which includes the above-mentioned shear wall body connection mechanism.

[0017] The technical effects and advantages of the present invention: 1. Through the mutual cooperation among the auxiliary docking pipe, the negative pressure chamber, the elastic metal sheet, the blocking part and the avoiding groove, etc., the auxiliary docking pipe is sleeved with the lower shear wall steel bars, so that the auxiliary docking pipe after being sleeved with the steel bars of the lower precast wall body can smoothly enter the hollow grouting sleeve, thereby realizing the rapid docking of the hollow grouting sleeve and the steel bars of the lower precast wall body and improving the docking efficiency.

[0018] 2. Through the mutual cooperation among the auxiliary docking pipe, the negative pressure chamber, the elastic metal sheet, the blocking part and the avoiding groove, etc., during the grouting process, the annular protrusion of the embedded steel bar fixing part is clamped with the metal plate, avoiding the situation that the auxiliary docking pipe slides down due to its own gravity during the grouting solidification stage, resulting in poor compactness after the grouting solidifies.

[0019] 3. The present invention cooperates with the auxiliary butt-joint tube, the negative pressure chamber, the elastic metal sheet, the sealing portion and the avoidance groove. When the annular protrusion of the embedded steel bar fixing piece is clamped with the metal plate, the slurry in the spiral guide groove can flow along the guide groove into the top of the auxiliary butt-joint tube, thereby filling the top of the auxiliary butt-joint tube with the slurry and improving the compactness of the clamping point between the auxiliary butt-joint tube and the embedded steel bar fixing piece.

[0020] 4. The present invention achieves backflow prevention by the mutual cooperation among the auxiliary docking tube, the negative pressure chamber, the elastic metal sheet, the sealing part and the avoidance groove, and the auxiliary docking tube rotates to make the sealing part seal the grouting pipe and the slurry outlet pipe, so as to avoid the slurry flowing out of the slurry outlet pipe and the grouting pipe due to loose sealing or accidental touching of the sealing plug after the filling is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the internal structure connection of the hollow grouting sleeve of the present invention.

[0023] Figure 3 For the present invention Figure 1 Structural cross-section view.

[0024] Figure 4 It is a cross-sectional view of the hollow grouting sleeve structure in the present invention.

[0025] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure of part A.

[0026] Figure 6 For the present invention Figure 3 Schematic diagram of the enlarged structure of part B.

[0027] In the figure: 1. hollow grouting sleeve; 101. sleeve body; 2. grouting pipe; 3. slurry outlet pipe; 4. embedded steel bar fixing piece; 401. rotating sleeve; 402. annular protrusion; 5. auxiliary butt joint pipe; 501. butt joint pipe body; 5011. slurry inlet groove; 5012. slurry outlet; 502. sealing ring; 503. guide block; 6. negative pressure chamber; 7. connecting hole; 8. elastic metal sheet; 9. metal plate; 901. vertical fixing plate; 902. arc chamfered corner portion; 903. slot; 10. blocking portion; 1001. non-elastic blocking section; 1002. elastic blocking section; 11. avoidance groove; 12. guide groove; 13. one-way valve; 14. spiral guide groove; 15. limit slide groove. DETAILED DESCRIPTION

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] The present invention provides a shear wall connection mechanism as Figures 1 to 6 shown, including a hollow grouting sleeve 1, a grouting pipe 2 and a slurry outlet pipe 3, and further including a pre-embedded steel bar fixing member 4 with the bottom end located inside the hollow grouting sleeve 1, the top end located outside the hollow grouting sleeve 1 and rotatably connected to the hollow grouting sleeve 1, which is used to connect with the wall pre-embedded steel bars; the present invention realizes grouting by setting the grouting pipe 2 and the slurry outlet pipe 3.

[0030] An auxiliary docking pipe 5 with a cover at the top, which is movably placed inside the hollow grouting sleeve 1, and the top side wall and the bottom of which are both connected to the inner cavity of the hollow grouting sleeve 1. When the top of it moves to the middle of the hollow grouting sleeve 1, it is slidably connected to the hollow grouting sleeve 1 up and down. When the top of it moves to the top of the hollow grouting sleeve 1, it is helically and hermetically slidably connected to the hollow grouting sleeve 1; the present invention sets the auxiliary docking pipe 5. Before docking, by pulling down the auxiliary docking pipe 5, since the auxiliary docking pipe 5 is helically slidably connected to the top of the hollow grouting sleeve 1 and is slidably connected to the middle of the hollow grouting sleeve 1 up and down, the auxiliary docking pipe 5 first rotates downward in a spiral manner and then slides downward, so that the lower end of the auxiliary docking pipe 5 slides out, and then is sleeved on the steel bars of the lower precast wall, so that the auxiliary docking pipe 5 is sleeved outside the steel bars of the lower precast wall. During the docking process, if part of the auxiliary docking pipe 5 cannot be sleeved outside the steel bars of the lower precast wall, it means that the steel bars of the lower precast wall are deformed during the hoisting process, resulting in inability to dock. The steel bars of the lower precast wall can be corrected by knocking, so that the auxiliary docking pipe 5 can be sleeved on the steel bars of the lower precast wall. By lowering the precast wall with a hoisting device, the precast wall moves downward, which will cause the auxiliary docking pipe 5 to move downward, completely sleeving the steel bars of the lower precast wall. After the auxiliary docking pipe 5 abuts against the lower precast wall, the hoisting device continues to lower the precast wall. Since the auxiliary docking pipe 5 is located inside the hollow grouting sleeve 1 and the two are sleeved with each other, the auxiliary docking pipe 5 sleeved with the lower steel bars can smoothly enter the hollow grouting sleeve 1, thereby realizing the rapid docking of the hollow grouting sleeve 1 and the steel bars of the lower precast wall and improving the docking efficiency.

[0031] A negative pressure chamber 6 is provided at the top of the auxiliary docking pipe 5, and its inner wall is connected to the inner cavity of the hollow grouting sleeve 1 through a plurality of communication holes 7 distributed in an array; by setting the negative pressure chamber 6 in the present invention, when the grouting liquid flows out of the grouting pipe 3, by blocking the grouting pipe 3, under the push of the grouting liquid pressure, the auxiliary docking pipe 5 will be pushed upward, and finally the negative pressure chamber 6 will be connected to the hollow grouting sleeve 1. Under the action of negative pressure and filling pressure, the top of the hollow grouting sleeve 1 can be filled with grout, thereby avoiding the situation that the top density of the hollow grouting sleeve 1 is low due to voids or bubbles appearing at the top of the hollow grouting sleeve 1.

[0032] A plurality of elastic metal sheets 8 are placed at the top of the auxiliary docking pipe 5, corresponding to the communication holes 7, and are used to block the communication holes 7; by setting the elastic metal sheets 8 in the present invention, the communication holes 7 are blocked to keep the negative pressure chamber 6 in a negative pressure state; when the elastic metal sheets 8 undergo elastic deformation, the negative pressure chamber 6 is connected to the hollow grouting sleeve 1.

[0033] A metal plate 9, its top is cooperated with the embedded steel bar fixing part 4 to push the elastic metal sheet 8 to deform, so that the negative pressure chamber 6 is communicated with the inner cavity of the hollow grouting sleeve 1, and its middle part can be clamped and cooperated with the peripheral side wall of the embedded steel bar fixing part 4.

[0034] Specifically, the metal plate 9 includes a vertical fixing plate 901. An arc-shaped guide angle part 902 is provided at the top of the side of the vertical fixing plate 901 opposite to the outer wall of the embedded steel bar fixing part 4. A clamping groove 903 for clamping and cooperating with the embedded steel bar fixing part 4 is opened in the middle of the side of the vertical fixing plate 901 opposite to the outer wall of the embedded steel bar fixing part 4.

[0035] By setting the arc-shaped guide angle part 902 in the present invention, when the auxiliary docking pipe 5 slides upward in a spiral manner, the upward sliding of the auxiliary docking pipe 5 will drive the metal plate 9 to slide upward. The upward sliding of the metal plate 9 will make the arc-shaped guide angle part 902 contact with the annular protrusion 402 of the embedded steel bar fixing part 4. Under the continuous upward movement, since the elastic metal sheet 8 can undergo elastic deformation, the metal plate 9 is pushed by the annular protrusion 402, which will cause the metal plate 9 to deflect outward, and at the same time the elastic metal sheet 8 deforms, so that the negative pressure chamber 6 is communicated with the inner cavity of the hollow grouting sleeve 1. Under the continuous upward movement of the auxiliary docking pipe 5, the annular protrusion 402 of the embedded steel bar fixing part 4 will be clamped with the metal plate 9.

[0036] A blocking part 10 is placed on the outer wall of the auxiliary docking pipe 5 and is used to block the grouting pipe 2 and the grouting pipe 3. When the auxiliary docking pipe 5 slides upward until the metal plate 9 is clamped with the annular protrusion 402 of the embedded steel bar fixing part 4, the blocking part 10 blocks the grouting pipe 2 and the grouting pipe 3.

[0037] Specifically, the blocking part 10 includes a non-elastic blocking section 1001, which is placed on the upper side wall of the auxiliary docking pipe 5 and is used to block the grout outlet pipe 3. In the present invention, by setting the upper part of the blocking part 10 as the non-elastic blocking section 1001, the grout outlet pipe 3 can be blocked.

[0038] An elastic blocking section 1002, which is placed at the bottom of the non-elastic blocking section 1001 and is used to block the grouting pipe 2. In the present invention, by setting the lower part as the elastic blocking section 1002, the grouting pipe 2 can be blocked. At the same time, under the grouting pressure of the grouting pipe 2, the elastic blocking section 1002 elastically deforms, so that grouting can continue, avoiding the situation that after the grouting pipe 2 is blocked, the top of the auxiliary docking pipe 5 is not completely filled with grout, resulting in a void at the top and low density.

[0039] An avoidance groove 11, which is placed on the side wall of the auxiliary docking pipe 5 and is used to provide a space for the lower part of the blocking part 10 to elastically deform. In the present invention, by setting the avoidance groove 11, when the elastic blocking section 1002 is in the position of blocking the grouting pipe 2, under the grout pressure, the elastic blocking section 1002 has a deformation space, so that the elastic blocking section 1002 can deform.

[0040] A diversion groove 12, which is opened at the top of the inner cavity of the hollow grouting sleeve 1 and is used to guide the grout at the lower part of the auxiliary docking pipe 5 to the upper part of the auxiliary docking pipe 5 after the metal plate 9 is clamped with the embedded steel bar fixing part 4.

[0041] The embedded steel bar fixing part 4 includes a rotating sleeve 401. The inner wall of the top of the rotating sleeve 401 is provided with a threaded docking groove, and the circumferential side wall of its bottom is provided with an annular protrusion 402 that is clamped and matched with the metal plate 9. In the present invention, by setting the rotating sleeve 401, by rotating the rotating sleeve 401, threaded docking with the embedded steel bar can be realized. In the present invention, by setting the annular protrusion 402, on the one hand, it can cooperate with the metal plate 9 to push the elastic metal sheet 8 to elastically deform, and on the other hand, it can cooperate with the metal plate 9 to be clamped, avoiding the situation that during the grouting solidification stage, due to the self-gravity of the auxiliary docking pipe 5, the auxiliary docking pipe 5 slides down, resulting in poor density after grouting solidification.

[0042] The grouting pipe 2 is placed on the bottom side wall of the hollow grouting sleeve 1 and is connected to the inside of the hollow grouting sleeve 1. In the present invention, by setting the grouting pipe 2, grouting can be realized.

[0043] The grout outlet pipe 3 is placed on the top side wall of the hollow grouting sleeve 1 and is connected to the inside of the hollow grouting sleeve 1. In the present invention, by setting the grout outlet pipe 3, return grout and exhaust can be realized.

[0044] It also includes a one-way valve 13, which is placed at the bottom of the negative pressure chamber 6 and communicated with the inner cavity of the auxiliary docking pipe 5, and can only make the air flow in the negative pressure chamber 6 flow outwards; by setting the one-way valve 13 in the pre-buried auxiliary docking pipe 5, the air in the negative pressure chamber 6 is pumped out by pumping the one-way valve 13, so as to realize the formation of a negative pressure state in the negative pressure chamber 6.

[0045] The auxiliary docking pipe 5 includes a docking pipe body 501, and two slurry inlet grooves 5011 are symmetrically arranged at the bottom of the docking pipe body 501, which can enable the slurry injected into the grouting pipe 2 to quickly enter the docking pipe body 501 through the slurry inlet grooves 5011. An outlet port 5012 is arranged on the side wall of the top of the docking pipe body 501, and it is arranged at the top of the docking pipe body 501, which can enable the liquid in the docking pipe body 501 to enter the outlet pipe 3 through the outlet port 5012.

[0046] The auxiliary docking pipe 5 also includes a sealing ring 502, which is sleeved on the outer wall of the docking pipe body 501 and is located above the grouting pipe 2; by setting the sealing ring 502 in the present invention, a sliding sealing connection with the inner cavity wall of the top of the hollow grouting sleeve 1 is realized.

[0047] A guiding block 503 is placed on the outer wall of the sealing ring 502, and it is in spiral sliding connection with the top of the hollow grouting sleeve 1 through a spiral guiding groove 14, and it is in limiting sliding connection with the middle part of the hollow grouting sleeve 1 through a limiting sliding groove 15.

[0048] The hollow grouting sleeve 1 includes a sleeve body 101, a limiting sliding groove 15 is arranged in the middle of the inner cavity wall of the sleeve body 101, a spiral guiding groove 14 is arranged at the top of the inner cavity wall of the sleeve body 101, the limiting sliding groove 15 is communicated with the spiral guiding groove 14, and a diversion groove 12 is arranged on the inner wall of the top end of the spiral guiding groove 14; by setting the spiral guiding groove 14 in the present invention, the auxiliary docking pipe 5 is realized to spiral upwards, and the limiting sliding groove 15 realizes the up and down sliding of the auxiliary docking pipe 5.

[0049] In use, first place leveling pads on the top of the lower shear wall for leveling. Lift the shear wall by a hoisting device, move the shear wall to be assembled to the position to be assembled by the hoisting device, then lower the shear wall to an appropriate height, pull out the auxiliary docking pipe 5, and evacuate the negative pressure cavity 6 to form a negative pressure inside. Adjust the lifted shear wall to align the auxiliary docking pipe 5 with the steel bars of the lower shear wall, and sleeve the auxiliary docking pipe 5 on the steel bars of the lower shear wall. When some of the auxiliary docking pipes 5 cannot be aligned with the steel bars of the lower shear wall, correct the steel bars of the lower shear wall by knocking to complete the socketing of the auxiliary docking pipe 5 with the steel bars of the lower shear wall. After the socketing is completed, lower the precast wall by the hoisting device. The downward movement of the precast wall will cause the auxiliary docking pipe 5 to move downward, and finally completely sleeve the steel bars of the lower precast wall. After the auxiliary docking pipe 5 abuts against the lower precast wall, the hoisting device continues to lower the precast wall. Since the auxiliary docking pipe 5 is located in the hollow grouting sleeve 1 and the two are socketed, the auxiliary docking pipe 5 after being socketed with the lower steel bars can smoothly enter the hollow grouting sleeve 1, thereby realizing the rapid docking of the hollow grouting sleeve 1 with the steel bars of the lower shear wall and improving the docking efficiency.

[0050] Then, the docking edges of the two shear walls are sealed with cement, and then grout is injected into the grouting pipe 2. Due to the setting of the grout inlet groove 5011, the grout injected into the grouting pipe 2 can quickly enter the docking pipe body 501 through the grout inlet groove 5011. As the grouting continues, the liquid level of the grout inside the hollow grouting sleeve 1 will gradually rise and finally flow out from the grout outlet pipe 3. Then, the grout outlet pipe 3 is blocked with a plug, and then grout is continuously injected. Under the action of the grout pressure, the auxiliary docking pipe 5 will be pushed upward, causing the guide block 503 to enter the spiral guide groove 14. Under the action of the grout pressure and the guidance of the spiral guide groove 14, the auxiliary docking pipe 5 will be pushed to rise spirally. When the auxiliary docking pipe 5 slides upward spirally, the upward spiral sliding of the auxiliary docking pipe 5 will drive the metal plate 9 to slide upward. The upward sliding of the metal plate 9 will make the arc-shaped guide corner 902 abut against the annular protrusion 402 of the embedded steel bar fixture 4. Continue to inject grout. Under the grout pressure, the auxiliary docking pipe 5 continues to rise spirally. Since the elastic metal sheet 8 can undergo elastic deformation, the metal plate 9 is pushed by the annular protrusion 402, causing the metal plate 9 to deflect outward, and at the same time, the elastic metal sheet 8 deforms, so that the negative pressure cavity 6 communicates with the inner cavity of the hollow grouting sleeve 1, forming a negative pressure at the top of the hollow grouting sleeve 1. Under the action of the grout pressure and the negative pressure, the auxiliary docking pipe 5 will continue to move upward spirally, and finally the annular protrusion 402 of the embedded steel bar fixture 4 is clamped with the metal plate 9; this avoids the situation that during the grouting solidification stage, due to the self-weight of the auxiliary docking pipe 5, the auxiliary docking pipe 5 slides downward, resulting in poor compactness after the grouting solidifies. When the annular protrusion 402 of the embedded steel bar fixture 4 is clamped with the metal plate 9, at this time, the grout in the spiral guide groove 14 can enter the top of the auxiliary docking pipe 5 along the diversion groove 12, so as to fill the top of the auxiliary docking pipe 5 with grout, improving the compactness of the clamping part between the auxiliary docking pipe 5 and the embedded steel bar fixture 4.

[0051] During the above spiral rising process, the rotation of the auxiliary docking pipe 5 will drive the blocking part 10 to rotate. The rotation of the blocking part 10 will cause the non-elastic blocking section 1001 to block the grout outlet pipe 3, and at the same time, the elastic blocking section 1002 will block the grouting pipe 2, thereby realizing the blocking between the grouting pipe 2 and the grout outlet pipe 3, avoiding the situation that after the grouting is completed, due to the insufficient tightness of the plug or accidental touch, the grout flows out from the grout outlet pipe 3 and the grouting pipe 2, and thus realizing anti-backflow.

[0052] After the blocking, under the grouting pressure of the grouting pipe 2, the elastic blocking section 1002 undergoes elastic deformation, so that grouting can still continue, avoiding the situation that after the grouting pipe 2 is blocked, the top of the hollow grouting sleeve 1 is not completely filled with grout, resulting in an empty top of the hollow grouting sleeve 1 and low compactness.

[0053] The present invention also provides a shear wall body, including the above-mentioned shear wall body connection mechanism.

[0054] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A shear wall connection mechanism, comprising a hollow grouting sleeve (1), a grouting pipe (2) and a grouting pipe (3), characterized in that: It also includes an embedded steel bar fixing part (4) whose bottom end is located inside the hollow grouting sleeve (1) and whose top end is located outside the hollow grouting sleeve (1) and is rotatably connected to the hollow grouting sleeve (1), and which is used to be connected to the embedded steel bars in the wall; An auxiliary butt joint pipe (5) with a cover on the top is movably placed in the hollow grouting sleeve (1), and its top side wall and bottom are both connected to the inner cavity of the hollow grouting sleeve (1). When its top moves to the middle of the hollow grouting sleeve (1), it is connected to the hollow grouting sleeve (1) in an up-and-down sliding manner. When its top moves to the top of the hollow grouting sleeve (1), it is connected to the hollow grouting sleeve (1) in a spiral sealing sliding manner. A negative pressure chamber (6) is provided at the top of the auxiliary butt joint pipe (5), and its inner wall is connected to the inner cavity of the hollow grouting sleeve (1) through a plurality of communicating holes (7) distributed in an array; a plurality of elastic metal sheets (8) disposed on the top of the auxiliary butt-jointing tube (5), corresponding to the communicating hole (7), and used for sealing the communicating hole (7); A metal plate (9), the top of which cooperates with the embedded steel bar fixing piece (4) to push the elastic metal sheet (8) to deform, so that the negative pressure cavity (6) is connected to the inner cavity of the hollow grouting sleeve (1), and the middle of which can be snap-fitted with the peripheral side wall of the embedded steel bar fixing piece (4); A plugging portion (10) disposed on the outer wall of the auxiliary butt-joint pipe (5) and used for plugging the grouting pipe (2) and the grouting pipe (3); An avoidance groove (11) is disposed on the side wall of the auxiliary butt joint pipe (5) and is used to allow a lower portion of the blocking portion (10) to have a space for elastic deformation; A guide groove (12) is provided at the top of the inner cavity of the hollow grouting sleeve (1) and is used to guide the grout at the lower part of the auxiliary butt joint pipe (5) to the upper part of the auxiliary butt joint pipe (5) after the metal plate (9) is clamped with the embedded steel bar fixing piece (4).

2. A shear wall connection mechanism according to claim 1, characterized in that: The embedded steel bar fixing member (4) comprises a rotating sleeve (401), the top inner wall of the rotating sleeve (401) is provided with a threaded butt joint groove, and the bottom peripheral side wall thereof is provided with an annular protrusion (402) that is snap-fitted with the metal plate (9).

3. A shear wall connection mechanism according to claim 1, characterized in that: The metal plate (9) comprises a vertical fixing plate (901), a top end of the vertical fixing plate (901) opposite to the outer wall of the embedded steel bar fixing piece (4) is provided with an arc-shaped chamfered corner portion (902), and a middle portion of the vertical fixing plate (901) opposite to the outer wall of the embedded steel bar fixing piece (4) is provided with a clamping groove (903) for clamping and cooperating with the embedded steel bar fixing piece (4) 4. A shear wall connection mechanism according to claim 1, characterized in that: The grouting pipe (2) is placed on the bottom side wall of the hollow grouting sleeve (1) and is connected to the interior of the hollow grouting sleeve (1); The grout outlet pipe (3) is disposed on the top side wall of the hollow grouting sleeve (1) and is communicated with the interior of the hollow grouting sleeve (1).

5. A shear wall connection mechanism according to claim 1, characterized in that: It also includes a one-way valve (13), which is placed at the bottom of the negative pressure chamber (6) and is connected to the inner cavity of the auxiliary docking tube (5), so as to only allow the airflow in the negative pressure chamber (6) to flow outwards.

6. A shear wall connection mechanism according to claim 1, characterized in that: The blocking portion (10) comprises a non-elastic blocking section (1001), which is disposed on the upper side wall of the auxiliary butt-joint pipe (5) and is used to block the slurry outlet pipe (3); An elastic plugging section (1002) is placed at the bottom of the non-elastic plugging section (1001) and is used to plug the grouting pipe (2).

7. A shear wall connection mechanism according to claim 1, characterized in that: The auxiliary butt joint pipe (5) comprises a butt joint pipe body (501), the bottom of the butt joint pipe body (501) being symmetrically provided with two slurry inlet grooves (5011), enabling the slurry injected into the grouting pipe (2) to quickly enter the butt joint pipe body (501) through the slurry inlet grooves (5011), and the top side wall of the butt joint pipe body (501) being provided with a slurry outlet (5012), which is provided at the top of the butt joint pipe body (501), enabling the liquid in the butt joint pipe body (501) to enter the slurry outlet pipe (3) through the slurry outlet (5012).

8. A shear wall connection mechanism according to claim 7, characterized in that: The auxiliary butt joint pipe (5) further comprises a sealing ring (502), which is sleeved on the outer wall of the butt joint pipe body (501) and is located on the upper part of the grouting pipe (2); A guide block (503) is disposed on the outer wall of the sealing ring (502), and is connected to the top of the hollow grouting sleeve (1) in a spiral sliding manner via a spiral guide groove (14), and is connected to the middle of the hollow grouting sleeve (1) in a limiting sliding manner via a limiting sliding groove (15).

9. A shear wall connection mechanism according to claim 8, characterized in that: The hollow grouting sleeve (1) comprises a sleeve body (101), the limiting sliding groove (15) is provided in the middle of the inner cavity wall of the sleeve body (101), the spiral guide groove (14) is provided at the top of the inner cavity wall of the sleeve body (101), the limiting sliding groove (15) is connected to the spiral guide groove (14), and the guide groove (12) is provided on the inner wall of the top end of the spiral guide groove (14).

10. A shear wall, characterized in that: It comprises the shear wall connection mechanism as described in any one of claims 1 to 9.

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