Prefabricated building structure and construction method

Abstract

The present invention discloses an assembled building structure and a construction method, belonging to the technical field of assembled buildings. It includes a precast wall, which is vertically installed. On the installation plane of the precast wall, installation-position preset steel bars are vertically installed. An installation-position preset sleeve is arranged around the outside of the installation-position preset steel bars. The installation-position preset sleeve is fixedly connected to the installation plane of the precast wall. A mating sleeve is vertically inserted into one side of the precast wall. A grouting channel extends radially towards the mating sleeve. One end of the grouting channel penetrates through the precast wall, and the other end of the grouting channel passes through the mating sleeve and extends into the interior of the mating sleeve. The grouting channel is located on the side of the mating sleeve facing the opening for inserting into the precast wall, and the grouting channel can be connected to an external mortar device. Compared with the traditional methods of bricklaying or pouring reinforced concrete, the method of installing precast wall panels in the present invention has high efficiency and less environmental impact on the installation location.

Description

Technical Field

[0001] The present invention relates to an assembled building structure and a construction method, belonging to the technical field of assembled buildings. Background Art

[0002] With the development of modern industrial technology, houses can be manufactured in batches and sets like machine production. Specifically, in the process of production and manufacturing, by prefabricating house components and then assembling the house components, a complete house can be formed. The development of assembled buildings can effectively improve the construction efficiency of houses and reduce the difficulty of shock absorption.

[0003] The assembled building structure includes various prefabricated structures including precast walls. Traditional walls need to be poured with a large amount of reinforced concrete or built with wall bricks during construction, which has a greater impact on the surrounding construction environment and is extremely easy to pollute the environment. At the same time, foreign objects are easily stuck at the connection between the traditional precast wall and the installation position, resulting in a reduction in the connection strength between the precast wall and the installation surface, and there are certain problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to provide an assembled building structure and a construction method, which solve the problem that foreign objects are easily stuck at the connection between the traditional precast wall and the installation position in the prior art, resulting in a reduction in the connection strength between the precast wall and the installation surface.

[0005] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions: An assembled building structure, including

[0006] A precast wall, which is vertically installed. Installation-position preset steel bars are vertically installed on the installation plane of the precast wall. An installation-position preset sleeve is circumferentially arranged outside the installation-position preset steel bars, and the installation-position preset sleeve is fixedly connected to the installation plane of the precast wall.

[0007] A mating sleeve, which is vertically inserted into one side of the precast wall.

[0008] A grouting channel, which extends radially towards the mating sleeve. One end of the grouting channel penetrates the precast wall, and the other end of the grouting channel passes through the mating sleeve and extends into the interior of the mating sleeve. The grouting channel is located on the side of the mating sleeve facing the opening for inserting into the precast wall, and the grouting channel can be connected to an external mortar device.

[0009] A slurry discharge channel, which extends radially towards the mating sleeve. One end of the slurry discharge channel penetrates the precast wall, and the other end of the slurry discharge channel passes through the mating sleeve and extends into the interior of the mating sleeve. The slurry discharge channel is located on the side of the mating sleeve away from the grouting channel.

[0010] A connecting steel bar strip, one end of which is vertically inserted into the precast wall along the radial direction of the mating sleeve, and the other end of the connecting steel bar strip extends to the inside of the mating sleeve.

[0011] The filling component is arranged inside the precast wall body, and part of the filling component extends into the mating sleeve to fill the inner space of the mating sleeve and the outer space of the connecting steel bar strip.

[0012] By adopting the above technical solution, when the precast wall body is vertically installed, the preset steel bar at the installation position and the preset sleeve at the installation position are inserted into the inner part of the mating sleeve, so that the mating sleeve and the preset sleeve at the installation position are nested with each other, thereby restricting the horizontal displacement of the precast wall body. Then, the mortar is introduced into the inner part of the mating sleeve through the grouting channel, so that the inner part of the mating sleeve is completely filled with the mortar. After the inner void of the mating sleeve is completely filled, the mortar overflows through the slurry discharge channel. After the mortar solidifies, the precast wall body and the installation plane are connected into one body. Compared with the traditional methods of bricklaying or casting reinforced concrete, this method has high installation efficiency and less environmental impact on the installation position. The filling component fills the inner space of the mating sleeve, which can prevent foreign objects from entering the mating sleeve before the installation of the precast wall body, thereby avoiding occupying a large inner space of the mating sleeve during the mortar filling and affecting the connection firmness between the precast wall body and the installation plane, and improving the connection strength between the precast wall body and the installation plane.

[0013] The present invention is further configured as: the filling component includes

[0014] The filling airbag is bonded to the inner wall of the mating sleeve. The filling airbag is arranged in a U-shaped ring shape and wraps the connecting steel bar strip.

[0015] The storage cavity is arranged on the side of the slurry discharge channel far from the grouting channel, and the storage cavity is communicated with the inner side of the mating sleeve.

[0016] The expansion airbag is placed in the storage cavity.

[0017] The flexible air duct is located at the connection between the storage cavity and the mating sleeve. One end of the flexible air duct is communicated with the filling airbag, and the other end of the flexible air duct is communicated with the expansion airbag.

[0018] The blocking mechanism is arranged between the storage cavity and the slurry discharge channel. A second air duct is arranged between the blocking mechanism and the storage cavity to communicate the storage cavity and the blocking mechanism.

[0019] Wherein, the blocking mechanism cuts off the slurry discharge channel by means of blocking.

[0020] By adopting the above technical solution, the filling airbag seals the space inside the fitting sleeve to prevent foreign objects from entering the fitting sleeve. When the preset steel bar at the installation position and the preset sleeve at the installation position are inserted into the clamping cavity, the filling airbag is squeezed and deformed by the preset sleeve at the installation position. At this time, the gas inside the filling airbag enters the expansion airbag through the flexible air duct. The expansion airbag expands, and the flexible air duct contracts. At this time, the flexible air duct is located in the gap between the preset sleeve at the installation position and the fitting sleeve. The expansion airbag expands but does not burst. When mortar is introduced into the fitting sleeve, the mortar enters the gap between the fitting sleeve and the preset sleeve at the installation position, thereby further squeezing the filling airbag. The gas inside the filling airbag further enters the expansion airbag through the flexible air duct, causing the expansion airbag to expand further. At this time, the inside of the fitting sleeve and the inner side of the preset sleeve at the installation position will be completely filled with mortar. Due to the pressure, the gas in the filling airbag in the gap between the fitting sleeve and the preset sleeve at the installation position is completely pressed into the expansion airbag, or the filling airbag is penetrated due to the puncture of the mortar hard object, so that the filling airbag is squeezed in the gap between the fitting sleeve and the preset sleeve at the installation position. Compared with the space occupied by foreign objects invading the fitting sleeve, it is greatly reduced, thereby improving the overall structural strength after the mortar penetrates into the fitting sleeve and solidifies, which is beneficial to ensuring the stable and reliable connection between the precast wall and the installation plane.

[0021] The present invention is further configured as: the blocking mechanism includes

[0022] a sliding cavity, which is arranged in the side wall body of the slurry discharge channel close to the storage cavity. One side of the sliding cavity is communicated with the second air guide channel, and the other side of the sliding cavity is communicated with the slurry discharge channel.

[0023] a slider, which is slidably arranged in the sliding cavity, and the connection part between the slot and the sliding cavity is sealed.

[0024] a connecting block, which is fixed on the side of the slot facing the slurry discharge channel.

[0025] a blocking block, which is fixed on the side of the connecting block facing the slurry discharge channel. The blocking block is arranged in a shape with a thin middle and thick ends along the extending direction of the connecting block.

[0026] a slot, which is arranged on the slurry discharge channel. The opening of the slot is vertically aligned with the opening where the sliding cavity is communicated with the slurry discharge channel. When the blocking block is inserted into the slot, the connection between the slider and the sliding cavity is unsealed.

[0027] By adopting the above technical solution, the gas filled in the filling airbag is continuously pressed into the expansion airbag, causing the expansion airbag to expand beyond the tensile limit of the expansion airbag material. At this time, the expansion airbag ruptures, and the gas in the expansion airbag is introduced into the sliding cavity through the second air guide channel. Since the connection between the slider and the sliding cavity is sealed, the slider drives the connecting block and the blocking block to move towards the slurry discharge channel at this time, and finally the end of the blocking block is inserted into the slot, thus completing the blocking of the slurry discharge channel. During the process of introducing mortar into the mating sleeve, when the mortar in the mating sleeve is filled and enters the slurry discharge channel, due to the blocking of the blocking block, the mortar cannot be discharged through the slurry discharge channel at this time. With the continuous introduction of mortar, the mortar in the mating sleeve gradually enters the storage cavity through the connection between the storage cavity and the mating sleeve, filling the storage cavity with mortar. At this time, there is no gas in the filling airbag, the flexible air guide pipe, and the expansion airbag. The mortar in the storage cavity enters the sliding cavity through the second air guide channel, so that the gap in the sliding cavity is also filled with mortar. Finally, the inner side of the mating sleeve, the storage cavity, the second air guide channel, and the sliding cavity are all filled with mortar, thus filling the internal cavity of the precast wall and improving the strength of the precast wall.

[0028] The present invention is further arranged as follows: A number of fixing spines are fixedly installed on the storage cavity except for the inner walls close to the slurry discharge channel and the mating sleeve, and the tips of the fixing spines face the expansion airbag.

[0029] By adopting the above technical solution, during the expansion process of the expansion airbag, by abutting against the tip of the fixing spine, the fixing spine pierces the expansion airbag, thus accelerating the process of the gas in the expansion airbag entering the storage cavity, avoiding the situation that the expansion airbag cannot burst due to the gas volume in the expansion airbag not reaching the bursting requirement, which may cause the blocking mechanism to malfunction and affect the mortar filling, and improving the reliability of the blocking mechanism.

[0030] The present invention is further arranged as follows: On the side of the mating sleeve away from the opening towards the precast wall, there is a storage cavity extending into the interior of the precast wall. The storage cavity is communicated with the inner side of the mating sleeve, and a

[0031] connecting sleeve is arranged to slide axially along the mating sleeve. The connecting sleeve surrounds the outside of the connecting steel bar.

[0032] A thrust spring is arranged at the end of the connecting sleeve away from the mating sleeve, and the two ends of the thrust spring are respectively abutted against the connecting sleeve and the inner wall of the storage cavity.

[0033] A limiting mechanism is arranged on the side of the storage cavity.

[0034] Among them, the limiting mechanism restricts the sliding of the connecting sleeve by engaging with the connecting sleeve.

[0035] By adopting the above technical solution, the limiting mechanism restricts the axial movement of the connecting sleeve under normal conditions. After the precast wall is installed and the connecting steel bar strip abuts against the preset steel bar at the installation position, the limiting mechanism releases the restriction on the connecting sleeve. At this time, under the elastic force of the thrust spring, the connecting sleeve moves axially towards the direction close to the preset steel bar at the installation position, and finally the connection part of the connecting steel bar strip and the preset steel bar at the installation position is wrapped by the connecting sleeve, preventing a large dislocation at the connection part of the preset steel bar at the installation position and the connecting steel bar strip, and improving the connection stability between the precast wall and the installation surface.

[0036] The present invention is further configured as: The limiting mechanism includes

[0037] A clamping cavity, which is arranged on the radial side of the connecting sleeve, and the clamping cavity is partially communicated with the storage cavity.

[0038] A clamping groove, which is arranged on the outer wall of the connecting sleeve.

[0039] A clamping block, which slides in the clamping cavity along the radial direction of the connecting sleeve, and the end of the clamping block facing the connecting sleeve can be inserted into the clamping groove.

[0040] An abutting spring, which is arranged on the side of the clamping block away from the connecting sleeve, and the abutting spring abuts against the clamping block and the inner wall of the clamping cavity.

[0041] A disengaging structure, which is arranged on the side of the storage cavity away from the mating sleeve.

[0042] Wherein, the disengaging structure converts the axial sliding of the connecting steel bar strip into the sliding of the clamping block in the clamping cavity.

[0043] By adopting the above technical solution, the axial displacement of the connecting sleeve is restricted by the clamping of the clamping block and the clamping groove, and the elastic force of the abutting spring pushes the clamping block to keep it in a state of always being clamped with the clamping groove, so as to ensure that the connecting sleeve will not be disengaged from the clamping of the clamping block even if it vibrates during the transportation of the precast wall, improving the stability of the connecting sleeve.

[0044] The present invention is further configured as: The disengaging structure includes

[0045] An air pressure cavity, which is arranged on the side of the storage cavity away from the mating sleeve, and the end of the connecting steel bar strip extends into the air pressure cavity.

[0046] A sealed sliding plate, which is fixed at one end of the connecting steel bar strip extending into the air pressure cavity, and the sealed sliding plate is slidably connected with the inner wall of the air pressure cavity, and the connection between the sealed sliding plate and the air pressure cavity is sealed.

[0047] A first air guiding channel, which is arranged between the clamping cavity and the air pressure cavity, and the first air guiding channel is respectively communicated with the clamping cavity and the air pressure cavity. The first air guiding channel is communicated with the clamping cavity through the side of the clamping cavity facing the storage cavity.

[0048] By adopting the above technical solution, after the connecting steel bar is connected with the preset steel bar at the installation position and axially moves, the sealing sliding plate is pushed to compress the supporting spring. At the same time, the space in the air pressure chamber decreases, resulting in an increase in the air pressure in the air pressure chamber. Thus, through the communication effect of the first air guide channel, the pressure on the side of the clamping block close to the connecting sleeve is greater than the pressure on the side away from the connecting sleeve. When the air pressure difference is greater than the elastic force of the abutting spring, the clamping block is pushed to the left, and finally the clamping block is disengaged from the clamping groove. The above process can ensure the normal clamping of the clamping block and the clamping groove when the precast wall is not installed, and can also ensure that when the precast wall is installed, the connecting sleeve can be immediately pushed to the connection between the connecting steel bar and the preset steel bar at the installation position, improving the reliability of the overall structure.

[0049] The present invention is further configured as follows: A metal brush layer is provided in the gap between the inner side of the connecting sleeve and the outer side of the connecting steel bar. The metal brush layer is fixedly connected to the connecting sleeve and abuts against the outer wall of the connecting steel bar. One end of the connecting sleeve facing the mating sleeve is provided with a conical shape converging towards the connecting steel bar, and there is a gap between one end of the connecting sleeve facing the mating sleeve and the outer wall of the connecting steel bar.

[0050] By adopting the above technical solution, by setting the end of the connecting sleeve to a conical shape, when the precast wall is not installed and the clamping block slips off the groove due to extreme reasons, when the connecting sleeve moves axially, the end of the connecting sleeve can be more conveniently inserted into the space between the filling airbag and the connecting steel bar. At this time, only the internal gas of the filling airbag is pressed into the expansion airbag, preventing the connecting sleeve from directly extruding the filling airbag from the mating sleeve and affecting the normal use of the filling airbag, reducing the accidental damage rate of the filling airbag. At the same time, the metal brush layer can abut against the outer surface of the connecting steel bar and the preset steel bar at the installation position respectively, enabling the connecting steel bar to conduct electricity to the preset steel bar at the installation position through the metal brush layer and the connecting sleeve. When the building lightning protection line needs to pass through the interior of the wall, this is conducive to ensuring that the connecting steel bar and the preset steel bar at the installation position do not become detached, ensuring the continuous connection of electricity conduction and ensuring that the building has lightning protection capabilities.

[0051] The present invention is further configured as follows: A plurality of mating sleeves are provided, and the plurality of mating sleeves are arranged at equal intervals along the extending direction of the longest side of the precast wall.

[0052] By adopting the above technical solution, by setting multiple groups of mating sleeves, the number of connection points between the precast wall and the installation plane is increased, further improving the stability of the precast wall after installation.

[0053] The present invention is further configured as follows: A construction method for an assembled building structure, the construction method includes

[0054] The first step is to vertically lift the precast wall so that the opening of the mating sleeve is aligned with the installation position.

[0055] In the second step, slowly lower the precast wall vertically, align the mating sleeve opening and place it at the installation position.

[0056] In the third step, continuously introduce the mixed mortar into the interior of the mating sleeve through the grouting channel.

[0057] In the fourth step, after the mixed mortar overflows from the opening of the slurry discharge channel, stop introducing the mixed mortar into the grouting channel.

[0058] In the fifth step, keep the precast wall in a vertical state and let it stand still.

[0059] By adopting the above technical solution, compared with the traditional methods of bricklaying and concrete pouring construction, the construction site is cleaner, reducing the impact on the environment of the construction site. At the same time, the operation is convenient, improving the construction efficiency.

[0060] The beneficial effects of the present invention are as follows:

[0061] 1. Compared with the traditional methods of bricklaying or pouring reinforced concrete, the method of installing precast wall panels has high efficiency and less impact on the environment at the installation position. The filling component fills the inner space of the mating sleeve, which can prevent foreign objects from entering the mating sleeve before the installation of the precast wall, thus avoiding occupying a large internal space of the mating sleeve during mortar filling and affecting the connection strength between the precast wall and the installation plane, and improving the connection strength between the precast wall and the installation plane.

[0062] 2. The metal brush layer can respectively abut against the outer surfaces of the connecting steel bar and the pre-set steel bar at the installation position, enabling the connecting steel bar to conduct electricity to the pre-set steel bar at the installation position through the metal brush layer and the connecting sleeve. When the building lightning protection line needs to pass through the interior of the wall, this is beneficial to ensuring that the connecting steel bar and the pre-set steel bar at the installation position do not become detached, ensuring the continuous connection of electricity conduction and ensuring that the building has lightning protection capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 is a schematic structural diagram of the present invention;

[0064] Figure 2 is Figure 1 a structural cross-sectional view in the A - A direction;

[0065] Figure 3 is Figure 2 an enlarged structural view at B;

[0066] Figure 4 is a schematic structural diagram of the present invention when it is installed and cooperates with the pre-set steel bar and the pre-set sleeve at the installation position;

[0067] Figure 5 is a schematic structural diagram of the initial state of the blocking block in the present invention.

[0068] In the figure: 10, precast wall; 11, slurry discharge channel; 12, grouting channel; 13, mating sleeve; 14, connecting steel bar; 20, connecting sleeve; 21, metal brush layer; 22, storage cavity; 23, thrust spring; 24, air pressure cavity; 25, support spring; 26, sealing sliding plate; 30, clamping cavity; 31, abutting spring; 32, clamping block; 33, first air guide channel; 40, filling airbag; 41, flexible air duct; 42, storage cavity; 43, expansion airbag; 44, fixing thorn; 45, second air guide channel; 50, sliding cavity; 51, slider; 52, connecting block; 53, blocking block; 54, slot; 60, pre-embedded steel bar at installation position; 61, pre-embedded sleeve at installation position. Specific embodiments

[0069] In order to clearly understand the technical means, creative features, achieved purposes and effects of the present invention, the present invention will be further described below with reference to specific drawings.

[0070] As Figures 1-5 shown, the prefabricated building structure includes a precast wall 10, a slurry discharge channel 11, a grouting channel 12, a mating sleeve 13, a connecting steel bar 14 and a filling component. The precast wall 10 is vertically installed. A pre-embedded steel bar 60 at the installation position is vertically installed on the installation plane of the precast wall 10. An installation position pre-embedded sleeve 61 is arranged around the outside of the pre-embedded steel bar 60 at the installation position. The installation position pre-embedded sleeve 61 is fixedly connected to the installation plane of the precast wall 10. The mating sleeve 13 is vertically inserted into one side of the precast wall 10. A plurality of mating sleeves 13 are provided, and the plurality of mating sleeves 13 are arranged at equal intervals along the extension direction of the longest side of the precast wall 10. The grouting channel 12 extends radially towards the mating sleeve 13. One end of the grouting channel 12 penetrates the precast wall 10, and the other end of the grouting channel 12 extends into the mating sleeve 13 through the mating sleeve 13. The grouting channel 12 is located on the side of the mating sleeve 13 facing the opening inserted into the precast wall 10, and the grouting channel 12 can be communicated with an external mortar device. The slurry discharge channel 11 extends radially towards the mating sleeve 13. One end of the slurry discharge channel 11 penetrates the precast wall 10, and the other end of the slurry discharge channel 11 extends into the mating sleeve 13 through the mating sleeve 13. The slurry discharge channel 11 is located on the side of the mating sleeve 13 away from the grouting channel 12. One end of the connecting steel bar 14 is vertically inserted into the precast wall 10 along the radial direction of the mating sleeve 13, and the other end of the connecting steel bar 14 extends to the inner side of the mating sleeve 13. The filling component is arranged inside the precast wall 10, and a part of the filling component extends into the mating sleeve 13 to fill the inner space of the mating sleeve 13 and the outer space of the connecting steel bar 14.

[0071] As Figure 2 and Figure 3As shown, the filling component includes a filling airbag 40, a flexible air duct 41, a storage cavity 42, an expansion airbag 43, a second air duct 45 and a blocking mechanism. The filling airbag 40 is bonded to the inner wall of the mating sleeve 13. The filling airbag 40 is arranged in a U-shaped ring and wraps the connecting steel bar 14. After the filling airbag 40 is inflated, when the preset sleeve 61 of the installation position is inserted into the inner part of the mating sleeve 13 and comes into contact with the filling airbag 40, the filling airbag 40 actively deforms and exports the gas in the filling airbag 40, and the filling airbag 40 will not be damaged. The storage cavity 42 is arranged on the side of the slurry discharge channel 11 away from the grouting channel 12, and the storage cavity 42 communicates with the inner side of the mating sleeve 13. The expansion airbag 43 is placed in the storage cavity 42. A number of fixing spines 44 are fixedly installed on the storage cavity 42 except for the inner walls close to the slurry discharge channel 11 and the mating sleeve 13, and the tips of the fixing spines 44 face the expansion airbag 43. The flexible air duct 41 is located at the connection between the storage cavity 42 and the mating sleeve 13. One end of the flexible air duct 41 communicates with the filling airbag 40, and the other end of the flexible air duct 41 communicates with the expansion airbag 43. The length of the fixing spines 44 is determined according to the expansion size of the expansion airbag 43 after the gas in the filling airbag 40 is introduced into the expansion airbag 43. Generally, when the filling airbag 40 is not completely pressed into the gap between the preset sleeve 61 of the installation position and the mating sleeve 13, the expansion airbag 43 abuts against the fixing spines 44, and only a small amount of pressure is required for the fixing spines 44 to pierce the expansion airbag 43. When the filling airbag 40 is completely pressed into the gap between the preset sleeve 61 of the installation position and the mating sleeve 13, the expansion size of the expansion airbag 43 is large enough for the fixing spines 44 to pierce it. The blocking mechanism is arranged between the storage cavity 42 and the slurry discharge channel 11. A second air duct 45 is arranged between the blocking mechanism and the storage cavity 42, and the second air duct 45 communicates the storage cavity 42 with the blocking mechanism. Among them, the blocking mechanism cuts off the slurry discharge channel 11 by means of blocking. The blocking mechanism includes a sliding cavity 50, a slider 51, a connecting block 52, a blocking block 53 and a slot 54. The sliding cavity 50 is arranged in the side wall body of the slurry discharge channel 11 close to the storage cavity 42. One side of the sliding cavity 50 communicates with the second air duct 45, and the other side of the sliding cavity 50 communicates with the slurry discharge channel 11. The slider 51 is slidably arranged in the sliding cavity 50. The connection between the slot 54 and the sliding cavity 50 is sealed. The connecting block 52 is fixed on the side of the slot 54 facing the slurry discharge channel 11. The blocking block 53 is fixed on the side of the connecting block 52 facing the slurry discharge channel 11. The blocking block 53 is arranged in a shape with a thin middle and thick ends along the extending direction of the connecting block 52. The connection between the blocking block 53 and the connecting block 52 is adhesively fixed. When subjected to a large horizontal force, the adhesive joint between the blocking block 53 and the connecting block 52 will break, and the blocking block 53 is made of a material that is easy to deform and break. The slot 54 is arranged on the slurry discharge channel 11, and the opening of the slot 54 is vertically aligned with the opening of the sliding cavity 50 communicating with the slurry discharge channel 11. When the blocking block 53 is inserted into the slot 54, the connection between the slider 51 and the sliding cavity 50 is unsealed.

[0072] As Figure 2 and Figure 4 shown, a storage cavity 22 extending into the precast wall body 10 is provided on the side of the mating sleeve 13 away from the side opening towards the precast wall body 10. The storage cavity 22 communicates with the inner side of the mating sleeve 13. A connecting sleeve 20, a thrust spring 23 and a limiting mechanism are arranged in the storage cavity 22. The connecting sleeve 20 is slidably arranged along the axial direction of the mating sleeve 13. The connecting sleeve 20 surrounds the outside of the connecting steel bar 14. A metal brush layer 21 is arranged in the gap between the inner side of the connecting sleeve 20 and the outside of the connecting steel bar 14. The metal brush layer 21 is fixedly connected with the connecting sleeve 20. The metal brush layer 21 abuts against the outer wall of the connecting steel bar 14. The end of the connecting sleeve 20 facing the mating sleeve 13 is arranged in a conical shape converging towards the connecting steel bar 14. There is a gap between the end of the connecting sleeve 20 facing the mating sleeve 13 and the outer wall of the connecting steel bar 14. The thrust spring 23 is arranged at the end of the connecting sleeve 20 away from the mating sleeve 13. The two ends of the thrust spring 23 respectively abut against the connecting sleeve 20 and the inner wall of the storage cavity 22. The limiting mechanism is arranged on the side of the storage cavity 22. Among them, the limiting mechanism restricts the sliding of the connecting sleeve 20 by means of clamping with the connecting sleeve 20. The limiting mechanism includes a clamping cavity 30, a abutting spring 31, a clamping block 32, a clamping groove and a disengaging structure. The clamping cavity 30 is arranged on the radial side of the connecting sleeve 20. The clamping cavity 30 is partially communicated with the storage cavity 22. The clamping groove is arranged on the outer wall of the connecting sleeve 20. The clamping block 32 slides in the clamping cavity 30 along the radial direction of the connecting sleeve 20. The end of the clamping block 32 facing the connecting sleeve 20 can be inserted into the clamping groove. The abutting spring 31 is arranged on the side of the clamping block 32 away from the connecting sleeve 20. The abutting spring 31 abuts against the clamping block 32 and the inner wall of the clamping cavity 30. The disengaging structure is arranged on the side of the storage cavity 22 away from the mating sleeve 13. Among them, the disengaging structure converts the axial sliding of the connecting steel bar 14 into the sliding of the clamping block 32 in the clamping cavity 30. The disengaging structure includes a pneumatic cavity 24, a sealing sliding plate 26 and a first air guiding channel 33. The pneumatic cavity 24 is arranged on the side of the storage cavity 22 away from the mating sleeve 13. The end of the connecting steel bar 14 extends into the pneumatic cavity 24. The sealing sliding plate 26 is fixed at the end of the connecting steel bar 14 extending into the pneumatic cavity 24. The sealing sliding plate 26 is slidably connected with the inner wall of the pneumatic cavity 24. The connection between the sealing sliding plate 26 and the pneumatic cavity 24 is sealed. The first air guiding channel 33 is arranged between the clamping cavity 30 and the pneumatic cavity 24. The first air guiding channel 33 is respectively communicated with the clamping cavity 30 and the pneumatic cavity 24. The first air guiding channel 33 is communicated with the clamping cavity 30 through the side of the clamping cavity 30 facing the storage cavity 22.

[0073] The cavity inside the precast wall 10 can be formed in advance by setting up the mold before pouring the precast wall 10. At the same time, the precast wall 10 can be made by splicing multiple pieces, that is, half of the precast wall 10 is poured and set, and after pouring, the two precast walls 10 are spliced with each other to form a complete cavity inside the precast wall 10, which is convenient for installing various components inside the precast wall 10.

[0074] When the precast wall 10 is vertically installed, the preset steel bars 60 and the preset sleeves 61 at the installation position are inserted into the internal of the mating sleeve 13, so that the mating sleeve 13 and the preset sleeve 61 at the installation position are nested with each other, thereby restricting the horizontal displacement of the precast wall 10. Then, the mortar is introduced into the internal of the mating sleeve 13 through the grouting channel 12, so that the internal of the mating sleeve 13 is completely filled with the mortar. After the internal void of the mating sleeve 13 is completely filled, the mortar overflows through the slurry discharge channel 11. After the mortar solidifies, the precast wall 10 and the installation plane are connected into one body. Compared with the traditional method of building walls or pouring reinforced concrete, this method has high installation efficiency and less environmental impact on the installation position. The filling component is filled in the inner space of the mating sleeve 13, which can prevent foreign objects from entering the mating sleeve 13 before the precast wall 10 is installed, thereby avoiding occupying a large internal space of the mating sleeve 13 when filling the mortar and affecting the connection strength between the precast wall 10 and the installation plane, and improving the connection strength between the precast wall 10 and the installation plane.

[0075] The filling airbag 40 blocks the space inside the mating sleeve 13 to prevent foreign objects from entering the mating sleeve 13. When the preset steel bars 60 and the preset sleeves 61 at the installation position are inserted into the clamping cavity 30, the filling airbag 40 is deformed by the preset sleeve 61 at the installation position. At this time, the gas inside the filling airbag 40 enters the expansion airbag 43 through the flexible air duct 41. The expansion airbag 43 expands, and the flexible air duct 41 shrinks. At this time, the flexible air duct 41 is located in the gap between the preset sleeve 61 at the installation position and the mating sleeve 13. The expansion airbag 43 expands but does not burst. When the mortar is introduced into the mating sleeve 13, the mortar enters the gap between the mating sleeve 13 and the preset sleeve 61 at the installation position, thereby further squeezing the filling airbag 40. The internal gas of the filling airbag 40 further enters the expansion airbag 43 through the flexible air duct 41, so that the expansion airbag 43 expands further. At this time, the internal of the mating sleeve 13 and the inner side of the preset sleeve 61 at the installation position will be completely filled with the mortar. Due to the pressure, the gas in the filling airbag 40 in the gap between the mating sleeve 13 and the preset sleeve 61 at the installation position is completely pressed into the expansion airbag 43, or the filling airbag 40 is penetrated by the mortar hard object, so that the filling airbag 40 is squeezed in the gap between the mating sleeve 13 and the preset sleeve 61 at the installation position. Compared with the space occupied by foreign objects invading the mating sleeve 13, it is greatly reduced, thereby improving the overall structural strength after the mortar penetrates into the mating sleeve 13 and solidifies, which is beneficial to ensuring the stable and reliable connection between the precast wall 10 and the installation plane.

[0076] The gas filled in the filling airbag 40 is continuously pressed into the expansion airbag 43, causing the expansion airbag 43 to expand beyond the tensile limit of the material of the expansion airbag 43. At this time, the expansion airbag 43 ruptures, and the gas in the expansion airbag 43 is introduced into the sliding cavity 50 through the second air guide channel 45. Since the connection between the slider 51 and the sliding cavity 50 is sealed, the slider 51 drives the connecting block 52 and the blocking block 53 to move towards the slurry discharge channel 11. Finally, the end of the blocking block 53 is inserted into the slot 54, thus completing the blocking of the slurry discharge channel 11. During the process of introducing mortar into the mating sleeve 13, when the mortar in the mating sleeve 13 is filled and enters the slurry discharge channel 11, due to the blocking of the blocking block 53, the mortar cannot be discharged through the slurry discharge channel 11 at this time. With the continuous introduction of mortar, the mortar in the mating sleeve 13 gradually enters the storage cavity 42 through the connection between the storage cavity 42 and the mating sleeve 13, filling the storage cavity 42 with mortar. At this time, there is no gas in the filling airbag 40, the flexible air guide pipe 41, and the expansion airbag 43. The mortar in the storage cavity 42 enters the sliding cavity 50 through the second air guide channel 45, so that the gap in the sliding cavity 50 is also filled with mortar. Finally, the inner side of the mating sleeve 13, the storage cavity 42, the second air guide channel 45, and the sliding cavity 50 are all filled with mortar, thus filling the internal cavity of the precast wall 10 and improving the strength of the precast wall 10.

[0077] During the expansion process of the expansion airbag 43, by abutting against the tip of the fixing thorn 44, the fixing thorn 44 punctures the expansion airbag 43, thereby accelerating the process of the gas in the expansion airbag 43 entering the storage cavity 42, avoiding the situation that the expansion airbag 43 cannot burst due to the gas volume in the expansion airbag 43 not reaching the bursting requirement, which may cause the blocking mechanism to malfunction and affect the mortar filling, and improving the reliability of the blocking mechanism.

[0078] The limiting mechanism restricts the axial movement of the connecting sleeve 20 under normal conditions. After the precast wall 10 is installed and the connecting steel bar 14 abuts against the pre-set steel bar 60 at the installation position, the limiting mechanism releases the restriction on the connecting sleeve 20. At this time, the connecting sleeve 20 moves axially in the direction close to the pre-set steel bar 60 at the installation position under the elastic force of the thrust spring 23. Finally, the connection between the connecting steel bar 14 and the pre-set steel bar 60 at the installation position is wrapped by the connecting sleeve 20, preventing a large dislocation at the connection between the pre-set steel bar 60 at the installation position and the connecting steel bar 14, and improving the stability of the connection between the precast wall 10 and the installation surface. At the same time, the metal brush layer 21 can respectively abut against the outer surfaces of the connecting steel bar 14 and the pre-set steel bar 60 at the installation position, enabling the connecting steel bar 14 to conduct electricity to the pre-set steel bar 60 at the installation position through the metal brush layer 21 and the connecting sleeve 20. When the building lightning protection line needs to pass through the interior of the wall, this helps to ensure that the connecting steel bar 14 and the pre-set steel bar 60 at the installation position do not become detached, ensuring continuous electrical connection and ensuring that the building has lightning protection capabilities.

[0079] The axial displacement of the connecting sleeve 20 is restricted by the clamping of the clamping block 32 with the clamping groove. The elastic force of the abutting spring 31 pushes the clamping block 32 to maintain a state of being constantly clamped with the clamping groove, thus ensuring that the connecting sleeve 20 will not become detached from the clamping of the clamping block 32 even when vibrating during the transportation of the precast wall 10, improving the stability of the connecting sleeve 20.

[0080] After the connecting steel bar 14 abuts against the pre-set steel bar 60 at the installation position and undergoes axial movement, it pushes the sealing sliding plate 26 to compress the support spring 25. At the same time, the space in the air pressure chamber 24 decreases, resulting in an increase in the air pressure in the air pressure chamber 24. Thus, through the connection effect of the first air guiding channel 33, the pressure on the side of the clamping block 32 close to the connecting sleeve 20 is greater than the pressure on the side away from the connecting sleeve 20. When the air pressure difference is greater than the elastic force of the abutting spring 31, the clamping block 32 is pushed to the left, and finally the clamping block 32 is disengaged from the clamping groove. The above process can ensure the normal clamping of the clamping block 32 and the clamping groove when the precast wall 10 is not installed, and can also ensure that when the precast wall 10 is installed, the connecting sleeve 20 can be immediately pushed to the connection between the connecting steel bar 14 and the pre-set steel bar 60 at the installation position, improving the reliability of the overall structure.

[0081] By setting the end of the connecting sleeve 20 in a conical shape, when the precast wall 10 is not installed and the clamping block 32 slips out of the groove due to extreme reasons, when the connecting sleeve 20 moves axially, the end of the connecting sleeve 20 can be more conveniently inserted into the space between the filling airbag 40 and the connecting steel bar 14. At this time, only the internal gas of the filling airbag 40 is pressed into the expansion airbag 43, preventing the connecting sleeve 20 from directly squeezing the filling airbag 40 out of the mating sleeve 13 and affecting the normal use of the filling airbag 40, and reducing the accidental damage rate of the filling airbag 40.

[0082] By setting multiple groups of mating sleeves 13, the number of connection points between the precast wall 10 and the installation plane is increased, further improving the stability of the precast wall 10 after installation.

[0083] The present invention is further configured as: a construction method for an assembled building structure, the construction method including

[0084] First step, vertically lift the precast wall 10 using a crane or hoist, and change the position of the precast wall 10 by pulling by workers to align the opening of the mating sleeve 13 with the installation position.

[0085] Second step, slowly lower the precast wall 10 along the vertical direction using a crane or hoist, align the opening of the mating sleeve 13 and place it until the precast wall 10 is placed at the installation position.

[0086] Third step, continuously introduce mixed mortar into the mating sleeve 13 through the grouting channel 12 using an external mortar device. After the mixed mortar enters the mating sleeve 13, it gradually fills the mating sleeve 13.

[0087] Fourth step, when the internal void of the precast wall 10 is completely filled with mortar and the mixed mortar overflows from the opening of the slurry discharge channel 11, stop introducing the mixed mortar into the grouting channel 12 at this time.

[0088] Fifth step, support the precast wall 10 using structures such as support rods or support frames so that the precast wall 10 can be kept in a vertical state and left standing. After the mortar is completely solidified, remove the support structure.

[0089] Compared with the traditional methods of building walls and pouring concrete, the above construction steps result in a cleaner construction site, reducing the impact on the environment at the construction site. At the same time, the operation is convenient, improving the construction efficiency.

[0090] When installing the precast wall 10, the precast wall 10 is hoisted and placed at the installation position through the above process. At this time, the preset steel bar 60 at the installation position abuts against the connecting steel bar strip 14, and the preset steel bar 60 at the installation position presses the connecting steel bar strip 14 upward, so that the connecting steel bar strip 14 drives the sealing sliding plate 26 to move upward, and thus the connecting sleeve 20 is unlocked through the above process. At this time, the connecting sleeve 20 axially moves to the connection between the connecting steel bar strip 14 and the preset steel bar 60 at the installation position. When mortar is gradually introduced into the mating sleeve 13 through the grouting channel 12, the mortar gradually fills the gap between the mating sleeve 13 and the preset sleeve 61 at the installation position and the inner space of the preset sleeve 61 at the installation position. After the above space is filled, due to the above process, the drain channel 11 is blocked, and the mortar cannot be discharged through the drain channel 11. At this time, the mortar gradually moves into the storage cavity 42, the storage cavity 22 and the air pressure cavity 24. Finally, after all the cavities inside the precast wall 10 are filled, as the mortar continues to be introduced, the pressure of the mortar inside the precast wall 10 is greater than the blocking ability of the blocking block 53. At this time, the blocking block 53 breaks or deforms, so that the blocking block 53 is disconnected from the connecting block 52 or the connection between the blocking block 53 and the connecting block 52 is bent. At this time, the drain channel 11 is communicated, and the mortar inside the precast wall 10 can be discharged through the drain channel 11, thus completing the grouting operation. After the mortar solidifies, the entire installation process can be completed.

[0091] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A prefabricated building structure, including a precast wall (10), characterized in that: including a mating sleeve (13) vertically inserted into one side of a precast wall (10), a grouting channel (12) radially extending towards the mating sleeve (13), one end of the grouting channel (12) penetrating the precast wall (10), and the other end of the grouting channel (12) extending through the mating sleeve (13) into the interior of the mating sleeve (13), the grouting channel (12) being located on the side of the mating sleeve (13) facing the opening for inserting into the precast wall (10), a slurry discharge channel (11) radially extending towards the mating sleeve (13), one end of the slurry discharge channel (11) penetrating the precast wall (10), and the other end of the slurry discharge channel (11) extending through the mating sleeve (13) into the interior of the mating sleeve (13), the slurry discharge channel (11) being located on the side of the mating sleeve (13) away from the grouting channel (12), a connecting steel bar (14), one end of which is vertically inserted into the precast wall (10) along the radial direction of the mating sleeve (13), and the other end of the connecting steel bar (14) extending to the inner side of the mating sleeve (13), a filling component provided inside the precast wall (10), and part of the filling component extending into the mating sleeve (13) to fill the inner space of the mating sleeve (13) and the outer space of the connecting steel bar (14); The filling component includes a filling airbag (40) bonded to the inner wall of the mating sleeve (13), the filling airbag (40) being arranged in a U-shaped ring and wrapping the connecting steel bar (14), a storage cavity (42) provided on the side of the slurry discharge channel (11) away from the grouting channel (12), the storage cavity (42) being communicated with the inner side of the mating sleeve (13), an expansion airbag (43) placed in the storage cavity (42), a flexible air duct (41) located at the connection between the storage cavity (42) and the mating sleeve (13), one end of the flexible air duct (41) being communicated with the filling airbag (40), and the other end of the flexible air duct (41) being communicated with the expansion airbag (43), a blocking mechanism provided between the storage cavity (42) and the slurry discharge channel (11), and there is a second air duct (45) communicating the storage cavity (42) with the blocking mechanism, wherein the blocking mechanism cuts off the slurry discharge channel (11) by blocking; The blocking mechanism includes a sliding cavity (50) provided in the side wall of the slurry discharge channel (11) close to the storage cavity (42), one side of the sliding cavity (50) being communicated with the second air duct (45), and the other side of the sliding cavity (50) being communicated with the slurry discharge channel (11), a slider (51) slidably arranged in the sliding cavity (50), and the connection between the slot (54) and the sliding cavity (50) is sealed, a connecting block (52) fixed to the side of the slot (54) facing the slurry discharge channel (11), a blocking block (53) fixed to the side of the connecting block (52) facing the slurry discharge channel (11), and the blocking block (53) is arranged in a shape that is thin in the middle and thick at both ends along the extending direction of the connecting block (52), a slot (54) provided in the slurry discharge channel (11), and the opening of the slot (54) is vertically aligned with the opening of the sliding cavity (50) communicating with the slurry discharge channel (11); A plurality of fixing spines (44) are fixedly installed on the inner wall of the receiving cavity (42) except near the slurry discharge channel (11) and the mating sleeve (13), and the tips of the fixing spines (44) face the expansion airbag (43).

2. The prefabricated building structure according to claim 1, characterized in that: On the side of the mating sleeve (13) away from the opening towards the precast wall (10), there is a storage cavity (22) extending into the interior of the precast wall (10). The storage cavity (22) communicates with the inner side of the mating sleeve (13), and in the storage cavity (22) there is a connecting sleeve (20) which is slidably arranged along the axial direction of the mating sleeve (13). The connecting sleeve (20) surrounds the outside of the connecting steel bar (14). a thrust spring (23) which is arranged at the end of the connecting sleeve (20) away from the mating sleeve (13). The two ends of the thrust spring (23) are respectively in contact with the connecting sleeve (20) and the inner wall of the storage cavity (22). a limiting mechanism which is arranged on the side of the storage cavity (22). Among them, the limiting mechanism restricts the sliding of the connecting sleeve (20) by means of clamping with the connecting sleeve (20).

3. The prefabricated building structure according to claim 2, characterized in that: The limiting mechanism includes a clamping cavity (30) which is arranged on the radial side of the connecting sleeve (20). The clamping cavity (30) is partially communicated with the storage cavity (22). a clamping groove which is arranged on the outer wall of the connecting sleeve (20). a clamping block (32) which slides in the clamping cavity (30) along the radial direction of the connecting sleeve (20). The end of the clamping block (32) facing the connecting sleeve (20) can be inserted into the clamping groove. a abutting spring (31) which is arranged on the side of the clamping block (32) away from the connecting sleeve (20). The abutting spring (31) is in contact with the clamping block (32) and the inner wall of the clamping cavity (30). a disengaging structure which is arranged on the side of the storage cavity (22) away from the mating sleeve (13). Among them, the disengaging structure converts the axial sliding of the connecting steel bar (14) into the sliding of the clamping block (32) in the clamping cavity (30).

4. The prefabricated building structure according to claim 3, characterized in that: The disengaging structure includes a pneumatic cavity (24) which is arranged on the side of the storage cavity (22) away from the mating sleeve (13). The end of the connecting steel bar (14) extends into the pneumatic cavity (24). a sealing sliding plate (26) which is fixed at the end of the connecting steel bar (14) extending into the pneumatic cavity (24). The sealing sliding plate (26) is slidably connected with the inner wall of the pneumatic cavity (24), and the connection between the sealing sliding plate (26) and the pneumatic cavity (24) is sealed. a first air guiding channel (33) which is arranged between the clamping cavity (30) and the pneumatic cavity (24). The first air guiding channel (33) is respectively communicated with the clamping cavity (30) and the pneumatic cavity (24). The first air guiding channel (33) is communicated with the clamping cavity (30) through the side of the clamping cavity (30) facing the storage cavity (22).

5. The prefabricated building structure according to claim 2, wherein: A metal brush layer (21) is provided in the gap between the inner side of the connecting sleeve (20) and the outer side of the connecting steel bar (14). The metal brush layer (21) is fixedly connected to the connecting sleeve (20), and the metal brush layer (21) abuts against the outer wall of the connecting steel bar (14). One end of the connecting sleeve (20) facing the mating sleeve (13) is arranged in a conical shape converging towards the connecting steel bar (14), and there is a gap between one end of the connecting sleeve (20) facing the mating sleeve (13) and the outer wall of the connecting steel bar (14).

6. The prefabricated building structure according to claim 1, wherein: A number of mating sleeves (13) are provided, and the several mating sleeves (13) are arranged at equal intervals along the extending direction of the longest side of the precast wall (10).

7. The construction method of the prefabricated building structure according to any one of claims 1-6, wherein: The construction method includes First step, vertically hoist the precast wall (10) so that the opening of the mating sleeve (13) is aligned with the installation position. Second step, slowly lower the precast wall (10) in the vertical direction, align the opening of the mating sleeve (13) and place it at the installation position Third step, continuously introduce the mixed mortar into the mating sleeve (13) through the grouting channel (12). Fourth step, after the mixed mortar overflows from the opening of the slurry discharge channel (11), stop introducing the mixed mortar into the grouting channel (12). Fifth step, keep the precast wall (10) in a vertical state and let it stand still.

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