Prefabricated laminated slab and construction method

Abstract

The invention provides a prefabricated laminated slab and a construction method, and relates to the field of constructional engineering. The prefabricated laminated slab comprises a prefabricated bottom plate and a fine adjustment mechanism; the fine adjustment mechanism comprises a longitudinal guide assembly and a transverse guide assembly; the longitudinal guide assembly comprises a first longitudinal guide piece and a second longitudinal guide piece; a longitudinal guide surface is arranged on the first longitudinal guide piece; the transverse guide assembly comprises a first transverse guide piece and a second transverse guide piece; a transverse guide surface is arranged on the first transverse guide piece; the second longitudinal guide piece and the longitudinal guide face of the adjacent prefabricated bottom plate abut against each other, so that one prefabricated bottom plate moves in the direction perpendicular to the length direction of the beam reinforcement cage; the second transverse guide pieces and the transverse guide faces of the adjacent prefabricated bottom plates abut against each other, so that one prefabricated bottom plate moves in the direction parallel to the length direction of the beam reinforcement cage. The construction method has the effect of improving the construction efficiency of the laminated slab.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering, in particular to a prefabricated composite slab and a construction method. BACKGROUND

[0002] With the continuous advancement of the building industrialization process, the composite slab, as a kind of concrete component with the advantages of prefabricated assembly and the reliability of cast-in-place structure, is widely used in various buildings. The composite slab is usually composed of a prefabricated bottom plate and a site post-cast concrete composite layer, which can greatly reduce the site wet work and effectively shorten the construction period, and improve the overall construction efficiency, so it has become one of the key components to promote the industrialization transformation of the building industry.

[0003] In the actual construction process of the composite slab, the accurate butt joint of the prefabricated bottom plates of the adjacent two composite slabs is the core process to ensure the stability and quality of the structure, wherein the embedded steel bars protruding from the peripheral side of the prefabricated bottom plate accurately extend into the beam reinforcement cage, which is directly related to the overall stress performance of the composite slab and the safety of the building structure. At present, when the prefabricated bottom plate is constructed and butt jointed, the prefabricated bottom plate is usually lifted to a specified height by a crane, and then the installation position of the prefabricated bottom plate is finely adjusted by the construction personnel to meet the precision requirements.

[0004] When the construction personnel fine-tunes, the approximate position is usually judged by the naked eye first, and then after the composite slab is placed, a crowbar is used as an adjustment tool to further correct the position of the composite slab until the construction precision requirements are met. However, the way of gradually adjusting the position of the prefabricated bottom plate by using the crowbar is complicated to operate, and the position of single adjustment is difficult to accurately control, so it often needs to be adjusted repeatedly several times to reach the preset precision, which affects the overall construction efficiency. SUMMARY

[0005] In order to improve the construction efficiency of the composite slab, the present application provides a prefabricated composite slab and a construction method.

[0006] In the first aspect, the present application provides a prefabricated composite slab, which adopts the following technical scheme: A prefabricated composite slab, comprising a prefabricated bottom plate and a fine-tuning mechanism; The fine-tuning mechanism comprises a longitudinal guide assembly and a transverse guide assembly; The longitudinal guide assembly comprises a first longitudinal guide and a second longitudinal guide; the first longitudinal guide and the second longitudinal guide are both arranged on the peripheral side of the prefabricated bottom plate, and the first longitudinal guide and the second longitudinal guide are oppositely arranged; a longitudinal guide surface is arranged on the first longitudinal guide; The transverse guide assembly comprises a first transverse guide and a second transverse guide; the first transverse guide and the second transverse guide are arranged on the circumferential side of the prefabricated bottom plate, and the first transverse guide and the second transverse guide are oppositely arranged; a transverse guide surface is arranged on the first transverse guide; The second longitudinal guide of an adjacent prefabricated bottom plate and the longitudinal guide surface abut, so that one prefabricated bottom plate moves in the direction perpendicular to the length of the beam reinforcement cage; The second transverse guide of an adjacent prefabricated bottom plate and the transverse guide surface abut, so that one prefabricated bottom plate moves in the direction parallel to the length of the beam reinforcement cage.

[0007] By adopting the above technical scheme, when the to-be-installed prefabricated bottom plate is connected with the installed prefabricated bottom plate, the second longitudinal guide of the to-be-installed prefabricated bottom plate and the longitudinal guide surface of the installed prefabricated bottom plate abut, and the second transverse guide of the to-be-installed prefabricated bottom plate and the transverse guide surface of the installed prefabricated bottom plate abut, so that the prefabricated bottom plate is guided during placement, and the prefabricated bottom plate can be adaptively adjusted in two directions of a horizontal plane, so that accurate connection is realized after placement, and the construction efficiency in the connection process is improved.

[0008] Optionally, the first longitudinal guide comprises a longitudinal connecting plate and a longitudinal guide plate, the longitudinal connecting plate is arranged on the prefabricated bottom plate, the longitudinal guide plate is arranged on the longitudinal connecting plate, and the longitudinal guide surface is arranged on the longitudinal guide plate.

[0009] By adopting the above technical scheme, when the second longitudinal guide of the to-be-installed prefabricated bottom plate abuts against the longitudinal guide surface of the installed prefabricated bottom plate during placement of the to-be-installed prefabricated bottom plate, the to-be-installed prefabricated bottom plate moves along the longitudinal guide surface of the installed prefabricated bottom plate, so that the to-be-installed prefabricated bottom plate moves in the direction perpendicular to the length of the beam.

[0010] Optionally, the first transverse guide comprises two transverse guide rods and two first transverse guide plates, the two transverse guide rods are arranged on the prefabricated bottom plate, the two first transverse guide plates are arranged on the transverse guide rods one by one in a one-to-one correspondence, and the transverse guide surface is arranged on the first transverse guide plate; the transverse guide surfaces of the two first transverse guide plates are oppositely arranged; The second transverse guide comprises a transverse connecting plate and a second transverse guide plate, the transverse connecting plate is arranged on the prefabricated bottom plate, and the second transverse guide plate is arranged on the transverse connecting plate; The second transverse guide plate of an adjacent prefabricated bottom plate and the transverse guide surface abut, so that one prefabricated bottom plate moves in the direction parallel to the length of the beam.

[0011] By adopting the technical scheme, when the second transverse guide plate on the to-be-installed prefabricated floor abuts against the transverse guide surface of the already-installed prefabricated floor in the lowering of the to-be-installed prefabricated floor, the to-be-installed prefabricated floor moves along the transverse guide surface of the already-installed prefabricated floor, so that the to-be-installed prefabricated floor moves in a direction parallel to the length of the beam.

[0012] Optionally, the binding auxiliary mechanism is further used for lifting the lower longitudinal reinforcement and the web reinforcement of the beam.

[0013] By adopting the technical scheme, the binding auxiliary mechanism can lift the lower longitudinal reinforcement and the web reinforcement of the beam, so that the binding operation of the lower longitudinal reinforcement and the web reinforcement of the beam is facilitated, and the construction efficiency is improved.

[0014] Optionally, the binding auxiliary mechanism comprises a lower longitudinal reinforcement lifting assembly, the lower longitudinal reinforcement lifting assembly comprises a lower longitudinal reinforcement support seat and a first locking piece; the lower longitudinal reinforcement support seat is slidingly arranged on the first longitudinal guide piece, and the lower longitudinal reinforcement of the beam is arranged on the lower longitudinal reinforcement support seat; the first locking piece is arranged on the lower longitudinal reinforcement support seat, and the first locking piece abuts against the first longitudinal guide piece to lock the lower longitudinal reinforcement support seat.

[0015] By adopting the technical scheme, when the lower longitudinal reinforcement of the beam needs to be bound, the position of the first locking piece on the lower longitudinal reinforcement support seat is adjusted, and when the first locking piece abuts against the first longitudinal guide piece, the first locking piece can limit the lower longitudinal reinforcement support seat from continuously moving under the action of gravity, so that the position adjustment of the lower longitudinal reinforcement support seat on the first longitudinal guide piece is realized, and the position of the lower longitudinal reinforcement of the beam is facilitated to be adjusted. After the lower longitudinal reinforcement of the beam is lifted to a certain height, the operator can operate conveniently, so that the binding efficiency is improved.

[0016] Optionally, the binding auxiliary mechanism further comprises a web reinforcement lifting assembly; the web reinforcement lifting assembly comprises a web reinforcement support seat and a second locking piece; the web reinforcement support seat is slidingly arranged on the second transverse guide piece, and the web reinforcement of the beam is arranged on the web reinforcement support seat; the second locking piece is arranged on the web reinforcement support seat, and the second locking piece abuts against the second transverse guide piece to lock the web reinforcement support seat.

[0017] By adopting the technical scheme, when the web reinforcement of the beam needs to be bound, the position of the second locking piece on the web reinforcement support seat is adjusted, and when the second locking piece abuts against the second transverse guide piece, the second locking piece can limit the web reinforcement support seat from continuously moving under the action of gravity, so that the position adjustment of the web reinforcement support seat on the second transverse guide piece is realized, and the position of the web reinforcement of the beam is facilitated to be adjusted. After the web reinforcement of the beam is lifted to a certain height, the operator can operate conveniently, so that the binding efficiency is improved.

[0018] Secondly, this application provides a construction method for precast composite slabs, which adopts the following technical solution: S1. Hoist the precast base slab to be installed close to the precast base slab that has already been installed; S2. Adjust the position of the precast base plate so that the second longitudinal guide of the precast base plate to be installed abuts against the longitudinal guide surface of the precast base plate that has been installed; and make the second transverse guide plate of the precast base plate to be installed abut against the transverse guide surface of the precast base plate that has been installed. S3. Lower the precast base plate to be installed to the lowest point to complete the placement of the precast base plate; S4. After placing the bottom longitudinal bars, web bars, top longitudinal bars, and stirrups of the beam, tie the bottom longitudinal bars, web bars, and top longitudinal bars to the stirrups in sequence to form a beam reinforcement cage, and extend the pre-embedded steel bars of the precast base slab into the beam reinforcement cage to complete the construction.

[0019] By adopting the above technical solution, the precast base plate to be installed is brought close to the precast base plate that has been installed and its position is adjusted. The fine-tuning mechanism of the precast base plate to be installed is made to abut against the fine-tuning mechanism of the precast base plate that has been installed. This enables the precast base plate to move in the direction perpendicular to and parallel to the beam length, thereby accurately adjusting its position, reducing manual fine-tuning operations, and improving construction efficiency.

[0020] After the precast base slab is completed, the longitudinal reinforcement and stirrups of the beam are tied together to form the beam reinforcement cage, and the embedded reinforcement of the precast base slab extends into the beam reinforcement cage, which can ensure the overall stress performance of the composite slab and the safety of the building structure.

[0021] Optionally, in step S4, the lower longitudinal reinforcement support and the waist reinforcement support are moved close to the precast base plate and then locked; after the stirrups are placed, the lower longitudinal reinforcement is installed on the lower longitudinal reinforcement support and passes through the inside of the stirrups, and then the lower longitudinal reinforcement is tied to the stirrups.

[0022] By adopting the above technical solution, the lower longitudinal reinforcement support and the web reinforcement support are moved close to the precast base slab and locked. Then, the stirrups are placed, and the lower longitudinal reinforcement of the beam is installed on the lower longitudinal reinforcement support. After passing through the inside of the stirrups, it is tied. After the lower longitudinal reinforcement of the beam is lifted by the lower longitudinal reinforcement support, it is easier for construction personnel to operate, thereby improving construction efficiency.

[0023] Optionally, after the lower longitudinal reinforcement and stirrups of the beam are tied, the lower longitudinal reinforcement support is moved and locked, and the beam web reinforcement is installed on the beam web reinforcement support and passes through the inside of the stirrups, and then the beam web reinforcement and stirrups are tied.

[0024] By adopting the technical scheme, after the lower longitudinal reinforcement and the stirrup are bound, the lower longitudinal reinforcement support base is moved to move the lower longitudinal reinforcement and the stirrup away from the prefabricated bottom plate. After the lower longitudinal reinforcement support base is moved to the designated position and is locked, the beam waist reinforcement is passed through the inside of the stirrup and the beam waist reinforcement support base, so that the beam waist reinforcement is located at the designed position of the stirrup. Since the position of the beam waist reinforcement is close to the position of the embedded steel bars of the prefabricated bottom plate at this time, it is convenient for the construction personnel to bind, and the binding efficiency of the beam waist reinforcement is improved.

[0025] Optionally, after the beam waist reinforcement and the stirrup are bound, the lower longitudinal reinforcement support base and the beam waist reinforcement support base are moved to make the lower longitudinal reinforcement and the beam waist reinforcement be located at the designed position. Then, the upper longitudinal reinforcement is passed through the inside of the stirrup and is bound to form a beam reinforcement cage.

[0026] By adopting the technical scheme, after the beam waist reinforcement and the stirrup are bound, the lower longitudinal reinforcement support base and the beam waist reinforcement support base are moved to make the lower longitudinal reinforcement and the beam waist reinforcement be located at the designed position. Then, the upper longitudinal reinforcement is passed through the inside of the stirrup and is bound to form a beam reinforcement cage. At this time, the embedded steel bars of the prefabricated bottom plate are located in the beam reinforcement cage, and the overall stress performance of the composite slab and the safety of the building structure are guaranteed.

[0027] In summary, the present application has at least one of the following beneficial technical effects: 1. By cooperation of the longitudinal guide assembly and the transverse guide assembly, when the prefabricated bottom plate to be installed is hoisted and is butted with the prefabricated bottom plate that has been installed, the second longitudinal guide piece of the prefabricated bottom plate to be installed and the longitudinal guide surface of the prefabricated bottom plate that has been installed abut, and the second transverse guide piece of the prefabricated bottom plate to be installed and the transverse guide surface of the prefabricated bottom plate that has been installed abut, so that the prefabricated bottom plate is guided during placement, and the prefabricated bottom plate can be self-adaptively adjusted in two directions of a horizontal plane, thereby realizing accurate butt joint after being placed down, and improving the construction efficiency in the butt joint process.

[0028] 2. By arranging the lower longitudinal reinforcement lifting assembly, when the lower longitudinal reinforcement of the beam needs to be bound, the position of the first locking piece on the lower longitudinal reinforcement support base is adjusted, so that the position of the lower longitudinal reinforcement support base on the first longitudinal guide piece is adjusted, and then the position of the lower longitudinal reinforcement of the beam is adjusted. After the lower longitudinal reinforcement of the beam is lifted to a certain height, it is convenient for the construction personnel to operate, thereby providing the binding efficiency.

[0029] 3. By arranging the waist reinforcement lifting assembly, when the beam waist reinforcement needs to be bound, the position of the second locking piece on the waist reinforcement support base is adjusted, so that the position of the waist reinforcement support base on the second transverse guide piece is adjusted, and then the position of the beam waist reinforcement is adjusted. After the beam waist reinforcement is lifted to a certain height, it is convenient for the construction personnel to operate, thereby providing the binding efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of a prefabricated composite slab according to Embodiment 1 of the present application; Figure 2 is a schematic diagram of the structure of a first longitudinal guide and a first transverse guide in a prefabricated composite slab according to Embodiment 1 of the present application; Figure 1 is a schematic diagram of the structure of a second longitudinal guide and a second transverse guide in a prefabricated composite slab according to Embodiment 1 of the present application; Figure 3 is a schematic diagram of the structure of a longitudinal guide assembly and a transverse guide assembly in a prefabricated composite slab according to Embodiment 1 of the present application; Figure 4 is a schematic diagram of the structure of a lower longitudinal reinforcement lifting assembly in a prefabricated composite slab according to Embodiment 1 of the present application; Figure 5 is a schematic diagram of the structure of a waist reinforcement lifting assembly in a prefabricated composite slab according to Embodiment 1 of the present application. Figure 6 is a schematic diagram of the structure of a lower longitudinal reinforcement lifting assembly in a prefabricated composite slab according to Embodiment 1 of the present application; Figure 7 is a schematic diagram of the structure of a waist reinforcement lifting assembly in a prefabricated composite slab according to Embodiment 1 of the present application.

[0031] In the figure: 1, prefabricated base plate; 11, embedded steel reinforcement; 2, longitudinal guide assembly; 21, first longitudinal guide; 211, longitudinal connecting plate; 212, longitudinal guide plate; 22, second longitudinal guide; 23, longitudinal guide surface; 3, transverse guide assembly; 31, first transverse guide; 311, transverse guide rod; 312, first transverse guide plate; 32, second transverse guide; 321, transverse connecting plate; 322, second transverse guide plate; 33, transverse guide surface; 4, binding auxiliary mechanism; 41, lower longitudinal reinforcement lifting assembly; 411, lower longitudinal reinforcement support seat; 412, first locking member; 42, waist reinforcement lifting assembly; 421, waist reinforcement support seat; 422, second locking member; 5, beam steel reinforcement cage; 51, beam lower longitudinal reinforcement; 52, beam upper longitudinal reinforcement; 53, beam waist reinforcement; 54, stirrup; 6, beam formwork. DETAILED DESCRIPTION

[0032] The following will be described in detail with reference to the accompanying drawings. Figures 1-7 The present application will be described in further detail.

[0033] Embodiment 1 Embodiment 1 of the present application discloses a prefabricated composite slab, as shown in Figure 1 and Figure 2 The prefabricated composite slab comprises a prefabricated base plate 1 and a fine adjustment mechanism, wherein the fine adjustment mechanism comprises a longitudinal guide assembly 2 and a transverse guide assembly 3. A beam steel reinforcement cage 5 is placed between two prefabricated base plates 1, wherein the beam steel reinforcement cage 5 is bound by a beam lower longitudinal reinforcement 51, a beam upper longitudinal reinforcement 52, a beam waist reinforcement 53 and a stirrup 54, and is placed in a beam formwork 6.

[0034] like Figure 3 and Figure 4 As shown, the longitudinal guide assembly 2 includes a first longitudinal guide 21 and a second longitudinal guide 22, and the transverse guide assembly 3 includes a first transverse guide 31 and a second transverse guide 32. The first longitudinal guide 21, the second longitudinal guide 22, the first transverse guide 31 and the second transverse guide 32 are all fixedly connected to the periphery of the precast base plate 1 at the factory. The first longitudinal guide 21 and the first transverse guide 31 are located on the same side, the second longitudinal guide 22 and the second transverse guide 32 are located on the same side, and the first longitudinal guide 21 and the second longitudinal guide 22 are located on opposite sides of the precast base plate 1.

[0035] Specifically, such as Figure 3 and Figure 4 As shown, the first longitudinal guide member 21 includes a longitudinal connecting plate 211 and a longitudinal guide plate 212. One end of the longitudinal connecting plate 211 is fixedly connected to the precast base plate 1, and the other end is fixedly connected to the longitudinal guide plate 212. A longitudinal guide surface 23 is provided on the longitudinal guide plate 212.

[0036] In this embodiment 1, two first longitudinal guide members 21 are provided.

[0037] like Figure 3 and Figure 4 As shown, the first transverse guide member 31 includes two transverse guide rods 311 and two first transverse guide plates 312. The two transverse guide rods 311 correspond one-to-one with the two first transverse guide plates 312 and are fixedly connected. The transverse guide rods 311 are fixedly connected to the precast base plate 1. The first transverse guide plates 312 are provided with transverse guide surfaces 33, and the transverse guide surfaces 33 of the two first transverse guide plates 312 are arranged opposite to each other. The second transverse guide member 32 includes a transverse connecting plate 321 and a second transverse guide plate 322. The transverse connecting plate 321 is fixedly connected to the precast base plate 1, and the second transverse guide plate 322 is fixedly connected to the transverse connecting plate 321.

[0038] like Figure 5As shown in Embodiment 1, when the precast base slab 1 to be installed is lowered using hoisting equipment, construction personnel guide the precast base slab 1 to move, causing the second longitudinal guide member 22 of the precast base slab 1 to abut against the longitudinal guide surface 23 of the already installed precast base slab 1, and the second transverse guide plate 322 of the precast base slab 1 to abut against the transverse guide surface 33 of the already installed precast base slab 1. As the precast base slab 1 continues to be lowered, it moves along the longitudinal guide surface 23 of the already installed precast base slab 1, thereby moving it in a direction perpendicular to the beam length. Simultaneously, it moves along the transverse guide surface 33 of the already installed precast base slab 1, causing it to move in a direction parallel to the beam length. After the precast base slab 1 is lowered, it moves to the designed position.

[0039] In Embodiment 1 of this application, through the cooperation of the longitudinal guide component 2 and the transverse guide component 3, the precast base plate 1 can adaptively adjust its position during the lowering process, so that the lower part is in the designed position. This improves the process in the prior art where the precast base plate 1 still needs to be further adjusted by the construction personnel after it is lowered, thereby improving the overall construction efficiency.

[0040] like Figure 6 and Figure 7 As shown, the precast base plate 1 also includes a binding auxiliary mechanism 4, wherein the binding auxiliary mechanism 4 includes a lower longitudinal reinforcement lifting component 41 and a waist reinforcement lifting component 42.

[0041] Specifically, such as Figure 6 and Figure 7 As shown, the lower longitudinal reinforcement lifting assembly 41 includes a lower longitudinal reinforcement support 411 and a first locking member 412, and the waist reinforcement lifting assembly 42 includes a waist reinforcement support 421 and a second locking member 422. The lower longitudinal reinforcement support 411 is mounted on the longitudinal guide plate 212, and the waist reinforcement support 421 is mounted on the transverse connecting plate 321. In this embodiment 1, the first locking member 412 is a nut, which is bolted to the lower longitudinal rib support 411 and abuts against the longitudinal guide plate 212, thereby restricting the lower longitudinal rib support 411 from continuing to move under the action of gravity, thus locking the lower longitudinal rib support 411; the second locking member 422 is a nut, which is threaded to the waist rib support 421 and abuts against the transverse connecting plate 321, thereby restricting the waist rib support 421 from continuing to move under the action of gravity, thus locking the waist rib support 421.

[0042] In addition, a plurality of installation grooves are formed on the lower longitudinal rib support seat 411 for installing the lower longitudinal rib 51 of the beam, wherein the positions of the installation grooves are formed according to the designed positions of the lower longitudinal rib 51 of the beam, thereby reducing the construction process of determining the distance between the lower longitudinal ribs 51 of the beam during the binding of the beam reinforcement cage 5, improving the construction efficiency and the accuracy of the arrangement of the lower longitudinal rib 51 of the beam. Similarly, installation grooves are also formed on the waist rib support seat 421 in the factory according to the design requirements, for installing the waist rib 53 of the beam.

[0043] It should be noted that when the beam reinforcement cage 5 needs to be erected between the two adjacent prefabricated floors 1, the embedded steel bars 11 on the prefabricated floor 1 need to extend into the beam reinforcement cage 5 to ensure the strength of the structure. At this time, since the position of the lower longitudinal rib 51 of the beam is far away from the prefabricated floor 1 and is located in the beam formwork 6, the operator needs to put his hand into the bottom of the beam formwork 6 when determining the position of the lower longitudinal rib 51 of the beam and binding the lower longitudinal rib 51 of the beam and the stirrup 54, which is inconvenient to operate. Meanwhile, the embedded steel bars 11 on the prefabricated floor 1 are located at the opening of the beam formwork 6, which further hinders the operation of the operator.

[0044] In the embodiment 1 of the present application, when the prefabricated floor 1 is placed and the beam reinforcement cage 5 is bound, the lower longitudinal rib support seat 411 and the waist rib support seat 421 are first moved to the position close to the embedded steel bars 11 of the prefabricated floor 1 and then locked, and then the lower longitudinal rib 51 of the beam is installed on the two lower longitudinal rib support seats 411. At this time, the lower longitudinal rib 51 of the beam is close to the position of the opening of the beam formwork 6, which is convenient for the operator to set the stirrup 54 and then bind.

[0045] After the lower longitudinal rib 51 of the beam and the stirrup 54 are bound, the position of the first locking member 412 is moved, the lower longitudinal rib support seat 411 is moved away from the embedded steel bars 11 by a specified distance and then locked, and at the same time, the stirrup 54 is also moved. Then, the waist rib 53 of the beam is arranged in the waist rib support seat 421, and at this time, the position of the waist rib 53 of the beam is at the designed position on the stirrup 54. After the waist rib 53 of the beam and the stirrup 54 are bound, the positions of the first locking member 412 and the second locking member 422 are adjusted, respectively, so that the lower longitudinal rib support seat 411 and the waist rib support seat 421 are moved to the specified positions and then locked. At this time, the lower longitudinal rib 51 of the beam and the waist rib 53 of the beam are all at the designed positions of the beam. Then, the upper longitudinal rib 52 of the beam is placed and bound with the stirrup 54, and the binding of the beam reinforcement cage 5 is completed.

[0046] The present application binds the lower longitudinal rib 51 of the beam and the waist rib 53 of the beam to the stirrup 54 in a position convenient for operation through the binding auxiliary mechanism 4, at the same time, reduces the influence on the embedded steel bars 11 of the prefabricated floor 1, and ensures that the embedded steel bars 11 extend into the beam reinforcement cage 5, thereby improving the construction efficiency and the construction quality.

[0047] The implementation principle of the prefabricated composite slab of the embodiment 1 of the application is as follows: The prefabricated composite slab of the embodiment 1 of the application is provided with a fine adjustment mechanism, and the longitudinal guide assembly 2 and the transverse guide assembly 3 are used to adjust the position of the prefabricated bottom plate 1 in the vertical direction and the parallel direction of the length direction of the beam, so that the problem of further adjusting the position of the prefabricated bottom plate 1 after being placed in the traditional construction by using a crowbar is solved, and the construction efficiency of the composite slab is improved. At the same time, the setting of the binding auxiliary mechanism 4 provides convenience for the binding of the beam reinforcement cage 5, and the lower longitudinal reinforcement lifting assembly 41 and the waist reinforcement lifting assembly 42 can adjust the lower longitudinal reinforcement 51 of the beam and the waist reinforcement 53 of the beam to the appropriate positions, so that the construction personnel can bind conveniently, the construction efficiency is further improved, and the influence on the embedded reinforcement 11 of the prefabricated bottom plate 1 is reduced, so that the construction quality is ensured.

[0048] Embodiment 2 The embodiment 2 of the application discloses a construction method of a prefabricated composite slab, which uses the prefabricated composite slab in the embodiment 1 and comprises the following steps. S1, hoisting the prefabricated bottom plate 1 to be installed close to the prefabricated bottom plate 1 that has been installed; S2, adjusting the position of the prefabricated bottom plate 1, so that the second longitudinal guide 22 of the prefabricated bottom plate 1 to be installed abuts against the longitudinal guide surface 23 of the prefabricated bottom plate 1 that has been installed; and the second transverse guide plate 322 of the prefabricated bottom plate 1 to be installed abuts against the transverse guide surface 33 of the prefabricated bottom plate 1 that has been installed; S3, placing the prefabricated bottom plate 1 to be installed to the lowest position to complete the placement of the prefabricated bottom plate 1; S4, after placing the lower longitudinal reinforcement 51 of the beam, the waist reinforcement 53 of the beam, the upper longitudinal reinforcement 52 of the beam and the stirrup 54, the lower longitudinal reinforcement 51 of the beam, the waist reinforcement 53 of the beam, the upper longitudinal reinforcement 52 of the beam and the stirrup 54 are sequentially bound to form the beam reinforcement cage 5, and the embedded reinforcement of the prefabricated bottom plate 1 extends into the beam reinforcement cage 5, and the construction is completed.

[0049] Specifically, first, the prefabricated bottom plate 1 to be installed is hoisted close to the prefabricated bottom plate 1 that has been installed by using a hoisting device.

[0050] Then, the construction personnel cooperate with the hoisting device to adjust the position of the prefabricated bottom plate 1 to be installed, so that the second longitudinal guide 22 of the prefabricated bottom plate 1 to be installed abuts against the longitudinal guide surface 23 of the prefabricated bottom plate 1 that has been installed; and the second transverse guide plate 322 of the prefabricated bottom plate 1 to be installed abuts against the transverse guide surface 33 of the prefabricated bottom plate 1 that has been installed. When adjusting the position, the construction personnel can slowly move the prefabricated bottom plate 1 to be installed by observation.

[0051] After the precast base slab 1 to be installed is abutted against the already installed precast base slab 1 through the corresponding longitudinal guide components 2 and transverse guide components 3, the precast base slab 1 to be installed is slowly lowered to its lowest position. During the lowering process, the precast base slab 1 to be installed is automatically adjusted to its position under the guidance of the longitudinal guide components 2 and transverse guide components 3, and finally moves to the designed docking position. After all the precast base slabs 1 are in place, the beam reinforcement cage 5 is tied. When placing the lower longitudinal reinforcement 51 of the beam, the positions of the first locking member 412 and the second locking member 422 are adjusted respectively to ensure that... The lower longitudinal reinforcement support 411 and the web reinforcement support 421 are moved to a position close to the precast base slab 1; then the lower longitudinal reinforcement 51 of the beam is installed on the lower longitudinal reinforcement support 411, and the stirrups 54 are put on the lower longitudinal reinforcement and tied.

[0052] After the lower longitudinal reinforcement 51 and stirrup 54 of the beam are tied, adjust the position of the first locking member 412 so that... After the lower longitudinal reinforcement support 411 is moved to the designated position, it is locked. Then the beam web reinforcement 53 passes through the web reinforcement support 421 and the stirrup 54, and the beam web reinforcement 53 and the stirrup 54 are tied together. At this time, the position of the beam web reinforcement 53 is at the designed position on the stirrup 54.

[0053] After the beam web reinforcement 53 and stirrups 54 are tied, adjust the positions of the first locking member 412 and the second locking member 422, and then move the lower longitudinal reinforcement support 411 and the web reinforcement support 421 so that the lower longitudinal reinforcement 51 and the beam web reinforcement 53 are in the designed positions when the beam is formed. Then, pass the upper longitudinal reinforcement 52 through the inside of the stirrups 54 and tie it to form the beam reinforcement cage 5.

[0054] The implementation principle of Embodiment 2 of this application is as follows: First, by using the cooperation of the longitudinal guide component 2 and the transverse guide component 3, the precast base plate 1 is accurately connected.

[0055] After the precast base plate 1 is placed, adjust the position of the lower longitudinal reinforcement lifting assembly 41 and the web reinforcement lifting assembly 42 to be close to the embedded steel bars 11. Then, install the lower longitudinal reinforcement 51 of the beam on the lower longitudinal reinforcement lifting assembly 41. At this time, the position of the lower longitudinal reinforcement 51 of the beam is close to the opening of the beam formwork 6, which makes it convenient for construction workers to tie the lower longitudinal reinforcement 51 and the stirrups 54.

[0056] After the lower longitudinal reinforcement 51 and stirrups 54 of the beam are tied, adjust the position of the lower longitudinal reinforcement lifting assembly 41 and install the beam web reinforcement 53 on the web reinforcement lifting assembly 42. At this time, the beam web reinforcement 53 is in the designed position of the stirrups 54. Then, tie the beam web reinforcement 53 and stirrups 54.

[0057] After the beam waist muscle 53 and the hoop muscle 54 are tied, the position of the lower longitudinal muscle lifting assembly 41 and the waist muscle lifting assembly 42 are moved respectively, so that the beam lower longitudinal muscle 51 and the beam waist muscle 53 are respectively in the designed position after the beam is shaped, and the beam upper longitudinal muscle 52 is placed, then the beam upper longitudinal muscle 52 is tied with the hoop muscle 54, and the tying of the beam steel cage 5 is completed.

[0058] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A precast composite slab, characterized in that, Includes a precast base plate (1) and a fine-tuning mechanism; The fine-tuning mechanism includes a longitudinal guide component (2) and a transverse guide component (3); The longitudinal guide assembly (2) includes a first longitudinal guide (21) and a second longitudinal guide (22); the first longitudinal guide (21) and the second longitudinal guide (22) are both disposed on the periphery of the precast base plate (1), and the first longitudinal guide (21) and the second longitudinal guide (22) are disposed opposite to each other; a longitudinal guide surface (23) is provided on the first longitudinal guide (21). The lateral guide assembly (3) includes a first lateral guide (31) and a second lateral guide (32); the first lateral guide (31) and the second lateral guide (32) are both disposed on the periphery of the precast base plate (1), and the first lateral guide (31) and the second lateral guide (32) are disposed opposite to each other; a lateral guide surface (33) is provided on the first lateral guide (31). The second longitudinal guide (22) and the longitudinal guide surface (23) of the adjacent precast base plate (1) abut each other, so that one of the precast base plates (1) moves in a direction perpendicular to the length of the beam reinforcement cage (5); The second transverse guide (32) and the transverse guide surface (33) of the adjacent precast base plate (1) abut each other, so that one of the precast base plates (1) moves in a direction parallel to the length of the beam reinforcement cage (5).

2. The prefabricated composite slab according to claim 1, characterized in that, The first longitudinal guide (21) includes a longitudinal connecting plate (211) and a longitudinal guide plate (212). The longitudinal connecting plate (211) is disposed on the precast base plate (1), the longitudinal guide plate (212) is disposed on the longitudinal connecting plate (211), and the longitudinal guide surface (23) is disposed on the longitudinal guide plate (212).

3. A prefabricated composite slab according to claim 1, characterized in that, The first transverse guide member (31) includes two transverse guide rods (311) and two first transverse guide plates (312). The two transverse guide rods (311) are both disposed on the precast base plate (1), and the two first transverse guide plates (312) are respectively disposed on the transverse guide rods (311). The transverse guide surface (33) is disposed on the first transverse guide plate (312); the transverse guide surfaces (33) of the two first transverse guide plates (312) are disposed opposite to each other. The second transverse guide (32) includes a transverse connecting plate (321) and a second transverse guide plate (322). The transverse connecting plate (321) is disposed on the precast base plate (1), and the second transverse guide plate (322) is disposed on the transverse connecting plate (321). The second transverse guide plate (322) of the adjacent precast base plate (1) abuts against the transverse guide surface (33), causing one of the precast base plates (1) to move in a direction parallel to the beam length.

4. A prefabricated composite slab according to claim 1, characterized in that, It also includes a binding auxiliary mechanism (4), which is used to lift the lower longitudinal reinforcement (51) and the web reinforcement (53) of the beam.

5. A precast composite slab according to claim 4, characterized in that, The binding auxiliary mechanism (4) includes a lower longitudinal reinforcement lifting assembly (41), which includes a lower longitudinal reinforcement support seat (411) and a first locking member (412). The lower longitudinal reinforcement support seat (411) is slidably disposed on the first longitudinal guide member (21), and the lower longitudinal reinforcement (51) of the beam passes through the lower longitudinal reinforcement support seat (411). The first locking member (412) is disposed on the lower longitudinal reinforcement support seat (411), and the first locking member (412) abuts against the first longitudinal guide member (21) to lock the lower longitudinal reinforcement support seat (411).

6. A prefabricated composite slab according to claim 5, characterized in that, The binding auxiliary mechanism (4) further includes a lumbar tendon lifting component (42); the lumbar tendon lifting component (42) includes a lumbar tendon support seat (421) and a second locking member (422); the lumbar tendon support seat (421) is slidably disposed on the second transverse guide member (32), and the beam lumbar tendon (53) passes through the lumbar tendon support seat (421); the second locking member (422) is disposed on the lumbar tendon support seat (421), and the second locking member (422) abuts against the second transverse guide member (32) to lock the lumbar tendon support seat (421).

7. A construction method for precast composite slabs, characterized in that, Includes the following steps: S1. Hoist the precast base plate (1) to be installed close to the precast base plate (1) that has been installed. S2. Adjust the position of the precast base plate (1) so that the second longitudinal guide (22) of the precast base plate (1) to be installed abuts against the longitudinal guide surface (23) of the precast base plate (1) that has been installed. Make the second transverse guide plate (322) of the prefabricated base plate (1) to be installed abut against the transverse guide surface (33) of the prefabricated base plate (1) that has been installed; S3. Lower the precast base plate (1) to be installed to the lowest point to complete the placement of the precast base plate (1); S4. After placing the lower longitudinal reinforcement (51), the waist reinforcement (53), the upper longitudinal reinforcement (52), and the stirrups (54) of the beam, the lower longitudinal reinforcement (51), the waist reinforcement (53), and the upper longitudinal reinforcement (52) of the beam are tied to the stirrups (54) in sequence to form the beam reinforcement cage (5), and the pre-embedded steel bars (11) of the precast base plate (1) are extended into the beam reinforcement cage (5) to complete the construction.

8. The construction method of a precast composite slab according to claim 7, characterized in that, In step S4, the lower longitudinal reinforcement support (411) and the waist reinforcement support (421) are moved close to the precast base plate (1) and locked; after placing the stirrups (54), the lower longitudinal reinforcement (51) of the beam is installed on the lower longitudinal reinforcement support (411) and passes through the inside of the stirrups (54), and then the lower longitudinal reinforcement is tied to the stirrups (54).

9. A construction method for a precast composite slab according to claim 8, characterized in that, After the lower longitudinal reinforcement (51) and stirrups (54) of the beam are tied, the lower longitudinal reinforcement support (411) is moved and locked, and the beam web reinforcement (53) is installed on the web reinforcement support (421) and passes through the inside of the stirrups (54). Then the beam web reinforcement (53) and stirrups (54) are tied.

10. A construction method for a precast composite slab according to claim 9, characterized in that, After the beam web reinforcement (53) and stirrups (54) are tied, the lower longitudinal reinforcement support (411) and the web reinforcement support (421) are moved so that the lower longitudinal reinforcement (51) and the beam web reinforcement (53) are in the designed position; then, the upper longitudinal reinforcement is passed through the inside of the stirrups (54) and tied to form the beam reinforcement cage (5).

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