An assembly unit and a hollow shear wall comprising the same

Abstract

The application discloses an assembling unit, which comprises a unit body, a first connecting piece and a second connecting piece arranged at the top and the bottom of the unit body respectively, and the first connecting piece and the second connecting piece are fixedly connected with the unit body; the first connecting piece and the second connecting piece are arranged in one-to-one correspondence, and the first connecting piece and the second connecting piece are connected in cooperation for fixing two assembling units adjacent in the height direction. The assembling units adjacent in the height direction are connected through the first connecting piece and the second connecting piece, and the pre-fixing is realized by replacing the temporary diagonal bracing.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building construction, specifically to an assembly unit and a hollow shear wall including the assembly unit. Background Technology

[0002] In the construction of prefabricated concrete shear wall structures, the vertical connection of precast wall panels is a crucial factor determining project efficiency and safety. Currently, the mainstream connection method is wet-work connection, and its conventional construction process is as follows: first, the lower wall panel is installed in place, and after its connection joints have reached a certain strength, the upper precast wall panel is hoisted in. After the upper wall panel is hoisted in place, axial deviation correction and temporary fixation are required.

[0003] However, when using the traditional wet connection method, after the upper precast wall panel is hoisted to the predetermined position, the grout or post-cast concrete at its vertical connection node has not yet hardened, and it can hardly provide effective flexural bearing capacity and overturning moment resistance in the early stage of curing. In order to resist wind loads and accidental impact loads during construction and to ensure the overall stability of the wall before the grout solidifies, current construction specifications and safety regulations require that a large number of temporary diagonal braces or support rods be erected on both sides of the wall panel (usually in the horizontal direction of the wall panel) to rigidly constrain the upper wall panel to the lower floor slab or ground to prevent the wall panel from overturning or displacing.

[0004] This construction method, which relies on a large number of temporary supports, involves complex and time-consuming procedures: the installation, adjustment, reinforcement, and subsequent dismantling of temporary diagonal braces not only significantly increases the on-site work procedures but also restricts the construction flow and makes it difficult to fully leverage the advantages of rapid construction of prefabricated buildings. Summary of the Invention

[0005] The purpose of this invention is to provide an assembly unit in which adjacent assembly units along the height direction are connected by a first connector and a second connector, thereby replacing temporary diagonal bracing to achieve pre-fixation.

[0006] To achieve the above objectives, the present invention provides an assembly unit, including a unit body and a first connector and a second connector located at the top and bottom of the unit body, respectively, wherein the first connector and the second connector are fixedly connected to the unit body. The first connector and the second connector are provided in a one-to-one correspondence. The first connector and the second connector are connected to fix two adjacent assembly units along the height direction.

[0007] Preferably, the second connector includes a connecting body, and the connecting body is screwed to the first connector; The connecting body is provided with a connecting hole, and the first connecting piece is screwed to the second connecting piece through the connecting hole; The connecting body and the first connecting piece are fixedly connected to the unit body respectively.

[0008] Preferably, the second connector further includes a first reinforcing bar arranged along a first direction and a second reinforcing bar arranged along a second direction. The first and second reinforcing bars are fixedly connected to the connecting body, and the first and second reinforcing bars extend into the interior of the unit body to connect the connecting body and the unit body. The first direction is perpendicular to the second direction.

[0009] Preferably, the connecting body is provided with a protective cavity for protecting the connecting hole, and the protective cavity protrudes from the unit body.

[0010] Preferably, it further includes a first connecting surface and a second connecting surface located at the top and bottom of the unit body, respectively, the first connecting surface and the second connecting surface cooperating to fix two adjacent assembly units along the height direction.

[0011] Preferably, the first connecting surface includes a reinforcing bar protruding from the top surface of the unit body, and the second connecting surface includes a cavity capable of accommodating the reinforcing bar, the cavity being arranged along the height direction of the unit body.

[0012] Preferably, multiple inserts are provided along the first connecting surface, and the bottoms of the multiple inserts are located on different planes.

[0013] Preferably, at the top of the assembly unit, cavities and inserts are provided in a one-to-one correspondence.

[0014] Preferably, at the bottom of the assembly unit, the number of cavities is less than the number of inserts, and adjacent inserts correspond to the same cavity.

[0015] The present invention also provides a hollow shear wall, including a lower assembly unit, an intermediate floor slab, and an upper assembly unit; The lower assembly unit is pre-fixed to the upper assembly unit via a first connector and a second connector.

[0016] According to the above technical solution, the unit body of the present invention is a precast concrete component, formed by concrete pouring, and has an internal cavity for weight reduction. The first connector and the second connector are respectively fixed to the top and bottom of the unit body. The fixing method can be achieved by pre-embedded anchoring, that is, during the concrete pouring process of the unit body, the first connector and the second connector are pre-embedded in the corresponding positions of the unit body. After the concrete solidifies, the first connector, the second connector and the unit body can be fixedly connected.

[0017] The first and second connectors are arranged in a one-to-one correspondence, meaning that each first connector on the top of the unit body has a corresponding second connector on the bottom of the unit body. When it is necessary to assemble two assembly units, the first connector on the top of the lower assembly unit and the second connector on the bottom of the upper assembly unit cooperate to connect, thereby fixing the two assembly units.

[0018] Since each assembly unit includes a first connector and a second connector, connecting the first and second connectors of two adjacent assembly units along the height direction will fix the two adjacent assembly units along the height direction. In actual production, the lower assembly unit can be fixed first, and then a floor slab can be poured on top of the assembly unit, exposing the connecting end of the first connector. After the concrete has solidified, the upper assembly unit can be fixed through the connecting end of the first connector, thus achieving pre-fixation of the upper assembly unit. At this time, the upper assembly unit is initially fixed to the floor slab and the lower assembly unit, and has a certain out-of-plane bending bearing capacity, which can resist the temporary out-of-plane loads on the wall panel during construction. This effectively solves the problem of needing to erect temporary supports after hoisting the upper wall, reduces construction procedures, and improves work efficiency.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the bottom of an assembly unit; Figure 2 yes Figure 1 Sectional view 1-1; Figure 3 This is a schematic diagram showing the connection between the top of an assembly unit and the floor slab. Figure 4 yes Figure 3 2-2 is a cross-sectional view.

[0021] Figure 5 This is a schematic diagram of a pre-connected state of a hollow shear wall; Figure 6 This is a schematic diagram of the connection state of a hollow shear wall; Figure 7 yes Figure 6 A schematic diagram of 1-1; Figure 8 yes Figure 6 Sectional view 2-2; Figure 9 This is a structural schematic diagram of a second connector.

[0022] Explanation of reference numerals in the attached figures 1 unit body; 21 First connector; 22 Second connector; 221 Connecting body; 222 Connecting hole; 231 First reinforcing bar; 232 Second reinforcing bar; 24 Protective cavity; 241 Angle steel; 242 Formwork top plate 3. First connecting surface; 31. Insert rod; 32. Baffle; 4. Second connecting surface; 41. Cavity; 10th floor slab. Detailed Implementation The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] In this invention, unless otherwise stated, directional terms included in the terminology represent only the orientation of the term in its normal use or as commonly understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0024] See Figure 1 An assembly unit includes a unit body 1 and a first connector 21 and a second connector 22 located at the top and bottom of the unit body 1, respectively, wherein the first connector 21 and the second connector 22 are fixedly connected to the unit body 1. The first connector 21 and the second connector 22 are provided in a one-to-one correspondence. The first connector 21 and the second connector 22 are connected to fix two adjacent assembly units along the height direction.

[0025] Through the implementation of the above technical solution, the unit body 1 is a precast concrete component, formed by concrete pouring, and has an internal cavity for weight reduction. The first connector 21 and the second connector 22 are respectively fixed to the top and bottom of the unit body 1. The fixing method can be achieved by pre-embedded anchoring, that is, during the concrete pouring process of the unit body 1, the first connector 21 and the second connector 22 are pre-embedded in the corresponding positions of the unit body 1, and after the concrete solidifies, the first connector 21, the second connector 22 and the unit body 1 can be fixedly connected.

[0026] The first connector 21 and the second connector 22 are provided in a one-to-one correspondence, that is, each first connector 21 on the top of the unit body 1 has a corresponding second connector 22 on the bottom of the unit body 1. When it is necessary to splice two assembly units, the first connector 21 on the top of the lower assembly unit and the second connector 22 on the bottom of the upper assembly unit cooperate with each other to fix the two assembly units.

[0027] Since each assembly unit includes a first connector 21 and a second connector 22, connecting the first connector 21 and the second connector 22 of two adjacent assembly units along the height direction can fix the two adjacent assembly units along the height direction. In actual production, the lower assembly unit can be fixed first, and then a floor slab can be poured on top of the assembly unit, exposing the connecting end of the first connector 21. After the concrete has solidified, the upper assembly unit can be fixed through the connecting end of the first connector 21, thereby achieving pre-fixation of the upper assembly unit. At this time, the upper assembly unit is initially fixed to the floor slab and the lower assembly unit, and has a certain out-of-plane bending bearing capacity, which can resist the temporary out-of-plane loads on the wall panel during construction. This effectively solves the problem of needing to erect temporary supports after hoisting the upper wall, reduces construction procedures, and improves work efficiency.

[0028] The unit body 1 is preferably a precast concrete hollow wall with a series of vertical holes along its height to reduce its weight and improve its seismic performance. The first connector 21 and the second connector 22 are both metal components with certain structural strength to ensure connection strength and durability.

[0029] In one embodiment, the first connectors 21 are located at both ends of the assembly unit along its length, and multiple first connectors 21 are provided along the width of the assembly unit. In this way, the upper assembly unit can be fixed to the lower wall through the cooperation of multiple first connectors 21 and second connectors 22 located at both ends of the wall.

[0030] In one embodiment, multiple first connectors 21 are spaced apart along the length of the assembly unit and multiple first connectors 21 are arranged along the width of the assembly unit, so that the upper assembly unit can be fixed to the lower wall through more connectors, thereby improving the reliability of the pre-fixation of the upper assembly unit.

[0031] In this embodiment, preferably, the second connector 22 includes a connector body 221, and the connector body 221 is screwed to the first connector 21; The connecting body 221 is provided with a connecting hole 222, and the first connecting member 21 is screwed to the second connecting member 22 through the connecting hole 222; The connecting body 221 and the first connecting piece 21 are fixedly connected to the unit body 1 respectively.

[0032] The first connector 21 is a connecting longitudinal bar pre-embedded in the top of the unit body 1. The connecting longitudinal bar can be a steel reinforcement structure inside the unit body 1, or the connecting longitudinal bar can be designed separately. When manufacturing the assembly unit, the connecting longitudinal bar is anchored to the steel reinforcement structure inside the unit body 1 so that after the concrete is poured, the connecting longitudinal bar is fixedly connected to the unit body 1.

[0033] The first connector 21, serving as a connecting longitudinal rib, has a threaded end that extends beyond the top surface of the unit body 1. The connecting body 221 of the second connector 22 is a horizontally positioned connecting plate, flush with the bottom of the unit body 1. Multiple connecting holes 222 are provided on the connecting body 221 along the thickness direction of the unit body 1, i.e., the width direction of the wall. The first connector 21 and the connecting hole 222 are arranged in a one-to-one correspondence, meaning the number and position of the first connector 21 perfectly correspond to the number and position of the connecting holes 222. During assembly, the lower first connector 21 extends into the upper connecting hole 22, and tightening the connecting nut achieves a fixed connection between the first connector 21 and the second connector 22.

[0034] In the specific implementation process, the lower assembly unit is first fixedly installed in place. The first connector 21 at the top of the assembly unit protrudes from the top surface of the unit body 1. Subsequently, the floor slab 10 is poured on top of the lower assembly unit. After the floor slab 10 is poured, the upper assembly unit is hoisted above the lower assembly unit, so that the connecting hole 222 of the second connector 22 at the bottom of the upper assembly unit is aligned with the first connector 21 at the top of the lower assembly unit. As the upper assembly unit descends, the first connector 21 passes into the connecting hole 222, and the first connector 21 and the second connector 22 are locked and fixed by nuts. Through the above-mentioned screw connection method, the upper assembly unit is quickly positioned and fixed, and after the upper assembly unit is fixed, there is no need to erect temporary supports, which greatly improves the construction efficiency.

[0035] In this embodiment, preferably, the second connector 22 further includes a first reinforcing bar 231 arranged along the first direction and a second reinforcing bar 232 arranged along the second direction. One end of the first reinforcing bar 231 and one end of the second reinforcing bar 232 are respectively fixedly connected to the connecting body 221. The other end of the first reinforcing bar 231 and the other end of the second reinforcing bar 232 extend into the interior of the unit body 1 to connect the connecting body 221 and the unit body 1.

[0036] In one embodiment, the first reinforcing bar 231 is arranged vertically, and the second reinforcing bar 232 is arranged horizontally. One end of the first reinforcing bar 231 and the second reinforcing bar 232 are welded and fixed to the connecting body 221, and the other end extends into the interior of the unit body 1. During the concrete pouring process of the unit body 1, the first reinforcing bar 231 and the second reinforcing bar 232 are poured into the concrete of the unit body 1, serving as anchoring reinforcing bars to firmly anchor the connecting body 221 to the bottom of the unit body 1.

[0037] Preferably, the first reinforcing bar 231 and the second reinforcing bar 232 extending into the unit body 1 are fixed to the reinforcing bar structure in the unit body 1, thereby further improving the reliability of the connection between the second connector 22 and the unit body.

[0038] By setting two anchoring bars, the first bar 231 and the second bar 232, in different directions, the connection between the connecting body 221 and the unit body 1 can be made more reliable, effectively transmitting vertical loads and horizontal shear forces. The diameter and length of the first bar 231 and the second bar 232 need to be determined based on actual stress calculations.

[0039] In this embodiment, preferably, the connecting body 221 is provided with a protective cavity 24 for protecting the connecting hole 222, and the protective cavity 24 protrudes from the unit body 1.

[0040] The first reinforcing bar 231 and the second reinforcing bar 232 need to be pre-embedded in the unit body 1. The unit body 1 can be obtained by pouring concrete. During the concrete pouring process, the protective cavity 24 can isolate the concrete and prevent the concrete from filling into the connecting hole 222, thereby ensuring that the connecting hole 222 remains unobstructed after the concrete is poured, so as to ensure that the subsequent first connecting piece 21 can be smoothly inserted.

[0041] In one embodiment, the connecting body 221 is configured as a horizontally arranged connecting plate, flush with the bottom of the assembly unit. An angle steel 241 is vertically arranged on the connecting plate. Above the connecting hole 222, a formwork support plate 242 is fixedly connected to the angle steel 241. The formwork support plate 242 and the angle steel 241 form a protective cavity 24. The angle steel 241 is preferably an equilateral angle steel with a cross-sectional length of approximately 75mm to 100mm and a thickness of approximately 8mm to 15mm; the specific dimensions need to be determined based on stress calculations. The formwork support plate 242 is approximately 4mm thick and is a square with sides the same length as the angle steel 241, only needing to ensure that no significant deformation occurs during concrete pouring.

[0042] When pouring concrete into the unit body 1, the connecting body 221 is fixed to the concrete pouring mold and located at the corner of the pouring mold. The connecting body 221 and the pouring mold together seal the cavity 41 inside the pouring mold. The first reinforcing bar 231 and the second reinforcing bar 232 are respectively inserted into the pouring mold. When the pouring mold is filled with concrete and the concrete has solidified, the second connecting piece 22 can be fixedly connected to the unit body 1.

[0043] Preferably, the second connector 22 is the same width as the unit body 1. During the pouring process, the angle steel 241 is connected to the side wall of the pouring mold to seal the concrete. Similarly, the top plate 242 of the formwork is also connected to the side wall of the pouring mold to seal the concrete, so that the concrete cannot enter the protective cavity 24 during the pouring process, and the connecting hole 222 is prevented from being filled by concrete.

[0044] If multiple first connectors 21 are provided along the width of the wall, then multiple protective cavities 24 are also required. Multiple protective cavities 24 are needed to protect the connecting holes 222 corresponding to the multiple first connectors 21, and correspondingly, multiple angle steels 241 are also required. A transverse connecting rod can be provided between the multiple angle steels 241, with the connecting rod located at the middle position in the height direction of the angle steels 241, to improve the strength of the angle steels 241 in the height direction.

[0045] In this embodiment, preferably, it also includes a first connecting surface 3 and a second connecting surface 4 located at the top and bottom of the unit body 1, respectively, and the first connecting surface 3 and the second connecting surface 4 cooperate to fix two adjacent assembly units along the height direction.

[0046] The first connecting surface 3 is located at the top of the unit body 1, and the second connecting surface 4 is located at the bottom of the unit body 1. When two adjacent assembly units are spliced ​​together along the height direction, the first connecting surface 3 at the top of the lower assembly unit and the second connecting surface 4 at the bottom of the upper assembly unit cooperate with each other to achieve the vertical positioning and fixation of the two assembly units.

[0047] The mating method of the first connecting surface 3 and the second connecting surface 4 complements the mating method of the first connecting member 21 and the second connecting member 22, together achieving a reliable connection between the upper and lower assembly units. Among them, the first connecting member 21 and the second connecting member 22 mainly provide bending load-bearing capacity and temporary fixing function, while the mating method of the first connecting surface 3 and the second connecting surface 4 mainly provides shear load-bearing capacity and positioning function.

[0048] In this embodiment, preferably, the first connecting surface 3 includes a reinforcing bar 31 protruding from the top surface of the unit body 1, and the second connecting surface 4 includes a cavity 41 capable of accommodating the reinforcing bar 31, the cavity 41 being arranged along the height direction of the unit body 1.

[0049] Before on-site assembly, the assembly unit does not include the reinforcing bar 31. Such an assembly unit has no protruding structures on any side, which facilitates transportation and stacking and avoids bumps and damage caused by protruding reinforcing bars during transportation.

[0050] Before the upper and lower assembly units assemble, the reinforcing bar 31 needs to be fixed in the cavity 41 with concrete. Specifically, a baffle 32 for sealing the cavity 41 is fixed to the bottom of the reinforcing bar 31. The shape and size of the baffle 32 are the same as the cross-sectional shape of the cavity 41, and it is preferably made of rubber material, i.e., a rubber sealing plate. After the reinforcing bar 31 and the baffle 32 are placed into the cavity 41, the baffle 32 seals the bottom of the cavity 41 to prevent concrete from leaking out of the bottom of the cavity 41 during subsequent concrete pouring. After the reinforcing bar 31 is temporarily fixed, concrete is poured into the cavity 41. After the concrete solidifies, the reinforcing bar 31 and the assembly unit are fixedly connected.

[0051] Specifically: First, the lower assembly unit is fixed, exposing the first connecting surface 3 at the top of the assembly unit; then, the reinforcing bar 31 is fixed in the cavity 41 of the first connecting surface 3. After fixing the reinforcing bar 31, concrete needs to be poured into the cavity 41. The concrete pouring operation can be carried out simultaneously with the pouring of the floor slab 10. The floor slab pouring mold is fitted to the side wall of the lower assembly unit, so that the cavity where the reinforcing bar 31 is located is connected to the cavity formed by the floor slab pouring mold. After pouring, the floor slab 10 and the reinforcing bar 31 become a whole, with a better connection effect.

[0052] After the concrete has hardened, the upper part of the reinforcing bar 31 protrudes from the floor slab 10. Based on the positions of the reinforcing bar 31 and the first connector 21, the upper assembly unit is assembled, so that the second connector 22 mates with the first connector 21, and the reinforcing bar 31 mates with the cavity 41. Then, the upper assembly unit is temporarily fixed by connecting the first connector 21 and the second connector 22. At this time, the upper part of the reinforcing bar 31, fixed in the cavity 41 of the lower assembly unit, protrudes from the top surface of the lower assembly unit and is inserted into the cavity 41 at the bottom of the upper assembly unit. Concrete is poured into the cavity 41 from the upper port until it covers the upper end of the reinforcing bar 31. The assembly unit is left to harden, and once hardened, a reliable connection between the upper and lower assembly units is achieved.

[0053] In one embodiment, the cavity 41 is a vertical through hole inside the unit body 1, and its cross-sectional shape is preferably rectangular. The insert bar 31 is a closed rectangular steel bar, and its rectangular width is the inner diameter of the cavity 41 minus 15mm to 30mm, so as to ensure that the insert bar 31 can be smoothly inserted into the cavity 41. The bottom of the insert bar 31 is fixedly connected to the baffle 32. The baffle 32 is made of rubber and has the same shape and size as the cross-sectional shape of the cavity 41, which can effectively seal the bottom of the cavity 41 and prevent concrete leakage during concrete pouring.

[0054] In this embodiment, preferably, multiple inserts 31 are provided along the first connecting surface 3, and the bottoms of the multiple inserts 31 are located on different planes.

[0055] The lengths of the reinforcing bars 31 are set to be consistent, meaning that the total length of all reinforcing bars 31 is the same. Multiple cavities 41 are provided at the top of the unit body 1 along the length of the wall, and each cavity 41 contains a corresponding reinforcing bar 31. The bottoms of the multiple reinforcing bars 31 are located at different height planes in the vertical direction, rather than all at the same height.

[0056] Since the bottoms of the reinforcing bars 31 are located on different planes, and the lengths of the reinforcing bars 31 are the same, the highest points of the reinforcing bars 31 are also located on different planes.

[0057] By placing the bottoms of multiple reinforcing bars 31 at different height planes, the concentrated stress section formed by the reinforcing bars 31 at the same height can be avoided. When the upper and lower assembly units are subjected to horizontal shear force, the shear force is transmitted through the reinforcing bars 31. If the bottoms of all the reinforcing bars 31 are at the same height, a concentrated weak shear section is formed at that height, which is prone to shear failure. However, by staggering the bottoms of the reinforcing bars 31, the shear sections of each reinforcing bar 31 are distributed at different heights, allowing the shear force to be distributed and preventing concentrated shear at a certain section. This improves the stress condition of the assembly unit and enhances the shear bearing capacity and seismic performance of the structure.

[0058] Meanwhile, the highest points of the reinforcing bars 31 are located on different planes, making the force distribution at the connection between two adjacent assembly units more uniform, which is also conducive to improving the force distribution of the upper assembly unit.

[0059] In this embodiment, preferably, the cavity 41 and the insert rib 31 are arranged in a one-to-one correspondence at the top of the assembly unit.

[0060] Each reinforcing bar 31 corresponds to a cavity 41. A baffle 32 is provided at the bottom of the reinforcing bar 31. The baffle 32 cooperates with the cavity 41 to block the concrete in the cavity 41, so that the poured concrete can form a whole with the reinforcing bar 31 and reliably fix the reinforcing bar 31.

[0061] Since the positions of the reinforcing bars 31 in two adjacent cavities 41 may be different, each reinforcing bar 31 in the lower assembly unit needs to correspond to a separate cavity 41. In this way, the baffle 32 of each reinforcing bar 31 can independently seal a cavity 41, ensuring that the concrete in each cavity 41 will not leak from the bottom during the pouring process, and ensuring that each reinforcing bar 31 can be reliably anchored by the concrete.

[0062] In this embodiment, preferably, at the bottom of the assembly unit, the number of cavities 41 is less than the number of inserts 31, and adjacent inserts 31 correspond to the same cavity 41.

[0063] Multiple cavities 41 at the bottom of the unit body 1 are connected by forming a larger cavity. This allows multiple insert bars 31 to be inserted into the same cavity 41 simultaneously.

[0064] The cavities 41 at the bottom of the upper assembly unit can be two or more connected together, which can reduce the number of pouring operations while ensuring the shear bearing capacity of the interface. By connecting multiple cavities 41 together, concrete can be filled around multiple reinforcing bars 31 at one time, thereby reducing the number of pouring operations and improving construction efficiency. Moreover, the increased contact area between the concrete and the reinforcing bars 31 after connecting the cavities 41 together improves the shear bearing capacity of the interface.

[0065] In one embodiment, a delivery pipe can be extended through cavity 41 to the bottom of the assembly unit, and concrete can be delivered into the cavity 41 below through the delivery pipe. In another embodiment, a hole can be drilled on the side of the cavity 41 of the assembly unit, at a position slightly higher than the height of the reinforcing bar 31, and concrete can be poured into the cavity 41.

[0066] In actual construction, the appropriate number of parallel holes and pouring method can be selected according to the specific conditions of the project. The more parallel holes there are, the fewer pouring times are required, and the higher the construction efficiency. However, it is also necessary to ensure that the cross-sectional dimensions of the cavity 41 after parallel holes meet the requirements for the installation of the reinforcing bar 31 and the pouring of concrete, and to ensure that the shear bearing capacity of the interface meets the design requirements.

[0067] The cavity 41 at the bottom of the upper assembly unit can have two or more holes, which can reduce the number of pouring operations while ensuring the shear bearing capacity of the interface. By combining multiple cavities 41, concrete can be filled around multiple reinforcing bars 31 at once, thereby reducing the number of pours and improving construction efficiency. Furthermore, combining the cavities also increases the shear capacity of the interface. In one embodiment, a delivery pipe can be extended through cavity 41 to the bottom of the assembly unit, and concrete can be delivered into the cavity 41 below through the delivery pipe. In another embodiment, a hole can be drilled on the side of the assembly cavity 41, slightly above the height of the reinforcing bar 31, to pour concrete into the cavity 41. The present invention also provides a hollow shear wall, including a lower assembly unit, an intermediate floor slab, and an upper assembly unit; The lower assembly unit is pre-fixed to the upper assembly unit via the first connector 21 and the second connector 22.

[0068] The top of the assembly unit has first connecting parts 21 embedded on both sides, and the bottom is set as a plane with second connecting parts 22 on both sides of the bottom. The specific construction process is as follows: First, the assembly unit located below is fixedly installed in place. The first connector 21 at the top of the assembly unit protrudes from the top surface of the unit body 1 and exposes the cavity 41 of the first connecting surface 3.

[0069] Next, the reinforcing bar 31 is fixed in the cavity 41 of the first connecting surface 3. The reinforcing bar 31, along with the bottom baffle 32, is placed into the cavity 41, and the baffle 32 seals the bottom of the cavity 41. After temporarily fixing the reinforcing bar 31, concrete is poured into the cavity 41. The concrete pouring operation can be carried out simultaneously with the pouring of the floor slab 10 to save construction time. After the pouring is completed, wait for the concrete to solidify.

[0070] After the concrete hardens, the upper part of the reinforcing bar 31 protrudes from the upper surface of the floor slab 10. Based on the positions of the reinforcing bar 31 and the first connector 21, the upper assembly unit is hoisted and assembled. During hoisting, the connecting hole 222 of the second connector 22 at the bottom of the upper assembly unit is aligned with the first connector 21 at the top of the lower assembly unit, and simultaneously, the cavity 41 at the bottom of the upper assembly unit is aligned with the protruding reinforcing bar 31 at the top of the lower assembly unit. Therefore, during hoisting, the first connector 21 also serves to position the upper assembly unit.

[0071] As the upper assembly unit descends, the first connector 21 passes through the connecting hole 222, and the insert rib 31 passes through the cavity 41. The first connector 21 and the second connector 22 are locked together with nuts, temporarily fixing the upper assembly unit. At this point, the upper assembly unit is fixed by the screw connection between the first connector 21 and the second connector 22, eliminating the need for temporary supports.

[0072] After the upper assembly unit is assembled, concrete is poured into the cavity 41 of the upper assembly unit, so that the concrete and the reinforcing bar 31 solidify into a whole. After the concrete solidifies, the reinforcing bar 31 and both the upper and lower assembly units are reliably anchored, thereby achieving a firm assembly of the upper and lower hollow shear walls.

[0073] By repeating the above steps, the assembly units can be spliced ​​layer by layer along the height direction to form a complete hollow shear wall structure.

[0074] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0075] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0076] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. An assembly unit, characterized in that, It includes a unit body (1) and a first connector (21) and a second connector (22) located at the top and bottom of the unit body (1) respectively, and the first connector (21) and the second connector (22) are fixedly connected to the unit body (1); The first connector (21) and the second connector (22) are provided in a one-to-one correspondence. The first connector (21) and the second connector (22) are connected to each other to pre-fix two adjacent assembly units along the height direction.

2. The assembly unit according to claim 1, characterized in that, The second connector (22) includes a connector body (221), which is screwed to the first connector (21); The connecting body (221) is provided with a connecting hole (222), and the first connecting member (21) is screwed to the second connecting member (22) through the connecting hole (222); The connecting body (221) and the first connecting piece (21) are fixedly connected to the unit body (1) respectively.

3. The assembly unit according to claim 2, characterized in that, The second connector (22) further includes a first reinforcing bar (231) arranged along a first direction and a second reinforcing bar (232) arranged along a second direction. The first reinforcing bar (231) and the second reinforcing bar (232) are respectively fixedly connected to the connecting body (221). The first reinforcing bar (231) and the second reinforcing bar (232) extend into the interior of the unit body (1) to connect the connecting body (221) and the unit body (1). The first direction is perpendicular to the second direction.

4. The assembly unit according to claim 3, characterized in that, The connecting body (221) is provided with a protective cavity (24) for protecting the connecting hole (222), and the protective cavity (24) protrudes from the unit body (1).

5. The assembly unit according to claim 1, characterized in that, It also includes a first connecting surface (3) and a second connecting surface (4) located at the top and bottom of the unit body (1), respectively, the first connecting surface (3) and the second connecting surface (4) cooperating to fix two adjacent assembly units along the height direction.

6. The assembly unit according to claim 5, characterized in that, The first connecting surface (3) includes a reinforcing bar (31) protruding from the top surface of the unit body (1), and the second connecting surface (4) includes a cavity (41) capable of accommodating the reinforcing bar (31), the cavity (41) being arranged along the height direction of the unit body (1).

7. The assembly unit according to claim 6, characterized in that, Multiple inserts (31) are provided along the first connecting surface (3), and the bottoms of the multiple inserts (31) are located on different planes.

8. The assembly unit according to claim 6, characterized in that, At the top of the assembly unit, the cavity (41) is provided in a one-to-one correspondence with the insert (31).

9. The assembly unit according to claim 6, characterized in that, At the bottom of the assembly unit, the number of cavities (41) is less than the number of inserts (31), and adjacent inserts (31) correspond to the same cavity (41).

10. A hollow shear wall, characterized in that, Includes the assembly unit as described in any one of claims 1-9 located below, the intermediate floor slab, and the assembly unit located on the upper layer; The lower assembly unit is pre-fixed to the upper assembly unit via a first connector (21) and a second connector (22).

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