CN117052036B - Prefabricated odd-shaped plate and floor structure - Google Patents
Prefabricated odd-shaped plate and floor structure Download PDFInfo
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- CN117052036B CN117052036B CN202310981407.6A CN202310981407A CN117052036B CN 117052036 B CN117052036 B CN 117052036B CN 202310981407 A CN202310981407 A CN 202310981407A CN 117052036 B CN117052036 B CN 117052036B
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
Abstract
The invention relates to the field of clean factory building construction, and discloses a prefabricated Qishi plate and a floor structure. A prefabricated churian plate comprising: floor body and positioning collar; the floor body is provided with a first surface and a second surface which are opposite, and a plurality of ventilation holes penetrating the floor body along a first direction; the positioning lantern ring comprises a lantern ring body and annular stiffening ribs sleeved outside the lantern ring body, the axis of the lantern ring body coincides with the axis of the vent hole, and the size of the inner wall of the lantern ring body is equal to the size of the hole wall of the vent hole; the annular stiffening rib separates the lantern ring body into a first connecting section and a second connecting section along the axial direction of the lantern ring body; the first connecting section and the annular stiffening rib are in an integral structure with the floor body in a factory, and the second connecting section protrudes out of the first surface of the floor body and is used for fixing the Qishi cylinder and preventing slurry leakage during in-situ casting, so that the cleanliness of the wall of the vent hole is guaranteed to meet the requirements of a clean factory building.
Description
Technical Field
The invention relates to the technical field of clean factory building construction, in particular to a prefabricated Qishi plate and floor structure.
Background
The normal operation of precision equipment and instruments in the production area of an electronic factory building has higher requirements on micro-vibration and cleaning of the environment, and a core production layer generally adopts a plate column structure formed by a Cheese plate (Qie plate), so that the requirements of micro-vibration prevention are met, and the function of vertical laminar flow of purified air from top to bottom is also met. At present, domestic electronic workshops are generally built by adopting cast-in-place concrete structures, a large number of templates and bracket engineering are needed, and the construction efficiency is greatly reduced; meanwhile, the cast-in-situ construction mode is extremely dependent on the number of labor force and construction precision, and difficulty is brought to the building quality guarantee of the electronic factory building.
Disclosure of Invention
The invention discloses a prefabricated Qishi plate and floor structure, which is used for simplifying on-site construction procedures.
In order to achieve the above purpose, the present invention provides the following technical solutions:
in a first aspect, the present invention provides a prefabricated odd-numbered plate comprising: floor body and positioning collar;
the floor body having opposed first and second surfaces and a plurality of ventilation holes extending through the floor body in a first direction; the first direction is the arrangement direction of the first surface and the second surface;
the positioning lantern ring comprises a lantern ring body and annular stiffening ribs sleeved outside the lantern ring body, the axis of the lantern ring body is coincident with the axis of the vent hole, and the size of the inner wall of the lantern ring body is equal to the size of the hole wall of the vent hole; the annular stiffening rib separates the lantern ring body into a first connecting section and a second connecting section along the axial direction of the lantern ring body; the first connecting section, the annular stiffening rib and the floor body are cast into an integral structure in a factory, and the second connecting section protrudes out of the first surface of the floor body and is used for fixing the Qie cylinder.
The prefabricated odd plates are processed in a prefabricated factory and transported to a construction site through transportation equipment, then the prefabricated odd plates are hoisted at corresponding positions, such as on upright posts, by hoisting equipment on the construction site and assembled into an integral building cover structure, so that an assembled structure of the electronic factory is realized.
And, the floor body of prefabricated odd-numbered board corresponds the ventilation hole position and is provided with the location lantern ring, and the annular stiffening rib on the location lantern ring can improve the intensity of lantern ring body, and the part of location lantern ring is first linkage segment and annular stiffening rib and floor body pour as an organic whole formula structure at prefabricated mill promptly, prevents the removal in relative ventilation hole of location lantern ring when transportation or site operation, the accurate positioning of ventilation hole of being convenient for. After the prefabricated Qishi plates are hoisted, a layer of concrete is poured on the prefabricated Qishi plates, so that the formed floor structure is guaranteed to form an up-down ventilation cavity, qishi cylinders are required to be placed before pouring, the arrangement and placement of the Qishi cylinders do not need to be measured and positioned again due to the existence of the positioning lantern rings, the construction and positioning of holes of the whole floor structure can be completed only by correspondingly connecting the Qishi cylinders with the second connecting sections of the positioning lantern rings, the operation is simple, the on-site positioning is not needed, and the positioning precision is high.
Simultaneously, place concrete behind odd's section of thick bamboo, because location lantern ring first linkage segment and annular stiffening rib and floor body pour as an organic whole structure at the prefabrication mill, and the second linkage segment of location lantern ring stretches out the first surface of floor body can prevent to leak thick liquid, promptly when pouring concrete on prefabricated odd's board, in concrete thick liquid can not get into the ventilation hole of prefabricated odd's board, guaranteed the cleanliness factor of the pore wall of ventilation hole and satisfied the demand of clean factory building.
In some embodiments, a side surface of the annular stiffener facing the second connection section is flush with the first surface.
In some embodiments, the floor slab body is internally provided with a bottom reinforcement, a waist reinforcement and a stirrup; the bottom rib and the waist rib are parallel to the first surface, and the bottom rib and the waist rib do not protrude out of the first surfaceThe side wall of the floor slab body; the stirrup extends along the first direction and protrudes out of the first surface; the height of the stirrup protruding out of the first surface along the first direction is h 1 The height of the second connecting section protruding out of the first surface is h 2 And h 1 ＞h 2 ；
The orthographic projection of the bottom ribs, the waist ribs and the stirrups on the floor body is not overlapped with the orthographic projection of the vent holes on the floor body.
In some embodiments, a first tendon group and a second tendon group are arranged in the floor body, the first tendon group is positioned on one side of the floor body close to the first surface, and the second tendon group is positioned on one side of the floor body close to the second surface;
the first prestress rib group and the second prestress rib group comprise a plurality of prestress ribs extending along a second direction, the prestress ribs do not protrude out of the side wall of the floor slab body, and the second direction is the length direction of the floor slab body;
the orthographic projection of the prestressed tendons on the floor body is not overlapped with the orthographic projection of the vent holes on the floor body.
In some embodiments, the first tendon group is spaced from the first surface by a distance of 20-30mm in the first direction; and/or the number of the groups of groups,
and the distance between the second prestress rib group and the second surface is 20-30mm along the first direction.
In some embodiments, the floor body has a thickness d of 170-250mm.
In some embodiments, a protruding lug is disposed on a side of the side wall of the floor body, which is close to the second surface, and the protruding lug cooperates with the side wall of the floor body to form an L-shaped structure with an opening facing away from the floor body.
In some embodiments, the through holes on the floor body near the side walls are tangential to the side walls of the floor body;
in the second direction, theThe width of the lug is a, and the distance between two adjacent through holes is s 1 And (2) and
along a third direction, the width of the lug is b, and the distance between two adjacent through holes is s 2 And (2) andthe third direction is the width direction of the floor slab body.
In some embodiments, the walls of the vent holes are coated with a protective layer.
In some embodiments, the protective layer comprises an epoxy layer.
In a second aspect, the present invention also provides a building cover structure comprising prefabricated frame columns, a support assembly and the prefabricated kirschner plate of any one of the first aspects, the support assembly being mounted to the prefabricated frame columns for supporting the prefabricated kirschner plate; the spliced parts of two adjacent prefabricated Qishi plates form an inter-plate cast-in-situ section; the prefabricated Qishi plates are paved with an on-plate superposed cast-in-situ layer and are connected with the inter-plate cast-in-situ section; and an odd-shaped cylinder is arranged in the overlapped cast-in-situ layer on the plate, and is sleeved on the outer side of the second connecting section in the prefabricated odd-shaped plate and in interference fit with the second connecting section.
In some embodiments, the prefabricated odd plates have a thickness D, the superimposed cast-in-place layer on the plates has a thickness D, and 2 d.ltoreq.D.ltoreq.3D.
The floor structure increases the height of the cast-in-situ section between the plates of two adjacent prefabricated odd plates through the L-shaped structures around the prefabricated odd plates, greatly reduces the influence of the close splice joint on the rigidity and micro-vibration of the floor, and meanwhile, the 2d-3d thick superposed cast-in-situ layer is poured on the upper parts of the prefabricated odd plates to form the whole floor into a whole, so that the two-way odd plate assembly floor structure with fixedly connected end parts is realized, the equivalent cast-in-situ micro-vibration control effect can be realized, and the micro-vibration requirement of a clean factory building is ensured.
Drawings
FIG. 1 is a schematic view of a prefabricated Qie plate according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a positioning collar in a prefabricated plate according to an embodiment of the present invention;
FIG. 3 is a schematic view of a Qishi canister;
FIG. 4 is a schematic diagram of an assembly structure of a positioning collar and a Qie cylinder according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an assembly structure of a prefabricated Qishi plate and Qishi cylinder according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of parameters in a prefabricated Qie plate according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a building cover structure according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a prefabricated frame column in a building cover structure according to an embodiment of the present invention;
fig. 9 is a schematic diagram of plate-to-plate connection of prefabricated odd plates in a floor structure according to an embodiment of the present invention.
Icon: 100-prefabricating a Qishi plate; 110-floor slab body; 120-positioning collar; 130-bottom ribs; 140-lumbar muscle; 150-stirrups; 160-prestress ribs; 170-picking the ears; 111-a first surface; 112-a second surface; 121-a collar body; 122-annular stiffeners; 1211-a first connection section; 1212-a second connecting section; 200-prefabricating frame columns; 210-temporary scaffold; 300-a support assembly; 400-cast-in-situ section between the plates; 500-laminating a cast-in-situ layer on the plate; 600-Qishi cylinder; 410-cast-in-situ section reinforcement cage between plates; 420-additional connecting bars; 610-a clamping section; 620-elastic member.
Detailed Description
First, the application scenario of the present application is introduced: the existing forming mode of the Qishi plate is site construction, for example, the working procedures of cast-in-situ Qishi plate construction are as follows: paving a plate lower full-hall support body, paving a platform template, positioning and lofting a Qishi cylinder, placing a Qishi cylinder base fixed iron sheet, binding steel bars, placing a Qishi cylinder lower cover plate on the fixed iron sheet, arranging a Qishi cylinder fixed screw, placing the Qishi cylinder, adjusting the level, arranging a Qishi cylinder upper cover plate, fixing an upper cover plate with the fixed screw, detecting the whole level of the Qishi cylinder, pouring concrete, and dismantling the full-hall support body and the platform template after concrete maintenance. The whole construction is required to be operated on site, the process is tedious, the working hours are long, and particularly, the positioning lofting and fixing of the Qishi cylinder are required to be carried out in multiple procedures, such as positioning lofting of the Qishi cylinder, placing of a fixed iron sheet of a Qishi cylinder base, placing of a lower cover plate of the Qishi cylinder on the fixed iron sheet, installation of a Qishi cylinder fixing screw rod, placing and leveling of the Qishi cylinder, installation of an upper cover plate of the Qishi cylinder, fixation of the upper cover plate and the fixing screw rod, and integral level detection of the Qishi cylinder.
Based on the application scenario, the embodiment of the application provides a prefabricated Qishi plate and floor structure, which is used for simplifying the site construction procedure.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B; the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and in addition, in the description of the embodiments of the present application, "plural" means two or more than two.
The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in fig. 1 to 2, an embodiment of the present invention provides a prefabricated plate 100 comprising: a floor body 110 and a locating collar 120; the floor body 110 has opposing first and second surfaces 111, 112 and a plurality of ventilation holes extending through the floor body 110 in a first direction; the first direction is the arrangement direction of the first surface 111 and the second surface 112, i.e. the Z direction in fig. 1; the positioning collar 120 comprises a collar body 121 and annular stiffening ribs 122 sleeved outside the collar body 121, the axis of the collar body 121 coincides with the axis of the vent hole, and the size of the inner wall of the collar body 121 is equal to the size of the wall of the vent hole; the annular stiffening ribs 122 divide the collar body 121 into a first connection section 1211 and a second connection section 1212 along the axial direction of the collar body 121; the first connection segment 1211 and the annular stiffener 122 are cast with the floor body 110 as a unitary structure, and the second connection segment 1212 protrudes beyond the first surface 111 of the floor body 110 for securing the kirschner wire 600.
The prefabricated odd-shaped plate 100 is processed in a prefabricated factory, transported to a construction site through transportation equipment, and then hoisted at a corresponding position on a stand column by hoisting equipment, and assembled into an integral floor structure, so that an assembled structure of an electronic factory is realized.
And, the floor body 110 of prefabricated odd-numbered board 100 corresponds the ventilation hole position and is provided with location lantern ring 120, and the annular stiffening rib 122 on the location lantern ring 120 can improve the intensity of lantern ring body 121, and the part of location lantern ring 120 is first linkage segment 1211 and annular stiffening rib 122 and floor body 110 pour as an organic whole formula structure at the prefabricated mill, prevents the removal of location lantern ring 120 relative ventilation hole when transportation or site operation, the accurate positioning of ventilation hole of being convenient for. After the prefabricated kirschner plate 100 is hoisted, a layer of concrete is required to be poured on the prefabricated kirschner plate 100, a kirschner wire cylinder is required to be placed before pouring in order to ensure that the formed floor structure forms a cavity which is ventilated up and down, the arrangement and placement of the kirschner wire cylinder do not need to be measured and positioned again due to the existence of the positioning lantern ring 120, the construction and positioning of the holes of the whole floor structure can be completed only by correspondingly connecting the kirschner wire cylinder with the second connecting section 1212 of the positioning lantern ring 120, the operation is simple, the site positioning is not required, and the positioning precision is high.
Meanwhile, concrete is poured after the Qishi cylinder is placed, as the first connecting section 1211 of the positioning collar 120, the annular stiffening rib 122 and the floor body 110 are poured into an integrated structure in a prefabrication factory, and the second connecting section 1212 of the positioning collar 120 protrudes out of the first surface 111 of the floor body 110, slurry leakage can be prevented, namely, when concrete is poured on the prefabricated Qishi plate 100, the concrete slurry cannot enter the vent holes of the prefabricated Qishi plate 100, and the cleanliness of the wall of the vent holes is guaranteed to meet the requirements of clean plants.
In a possible implementation manner, as shown in fig. 2, the collar body 121 of the positioning collar 120 is of a hollow structure, and the first connection section 1211 and the second connection section 1212 are of an integral structure, and only the portion of the positioning collar 120 embedded inside the floor slab body 110 is defined as the first connection section 1211, and the portion for fixing the kirschner wire barrel is defined as the second connection section 1212, which are separated by the middle annular reinforcing rib. With reference to fig. 1, the inner wall of the collar body 121 is matched with the hole wall of the vent hole, so that the axis of the hollow cavity inside the collar body 121 coincides with the axis of the vent hole, the radial dimension of the hollow cavity is equal to the radial dimension of the vent hole, and the accurate positioning of the vent hole is realized through the positioning collar 120.
As shown in fig. 3, the structure of the kirschner wire barrel 600 is also a hollow structure inside the kirschner wire barrel 600, the kirschner wire barrel 600 has a clamping section 610 which is in clamping fit with the positioning collar 120, and the inner wall of the clamping section 610 is slightly larger than the outer contour dimension of the second connecting section 1212, so that a gap between the clamping section 610 and the second connecting section 1212 can be filled by an elastic member 620 such as elastic plastic, etc., as shown in fig. 4, that is, the clamping section 610 of the kirschner wire barrel 600 is in interference fit with the second connecting section 1212 of the positioning collar 120 by the elastic member 620. Compared with the prior art, the prefabricated kirschner plate 100 is provided, when being connected with the kirschner wire 600, a base fixing iron sheet, a lower cover plate, a fixing screw, an upper cover plate and the like are not required, and the positioning and fixing of the kirschner wire 600 can be realized only by sleeving the clamping section 610 of the kirschner wire 600 outside the elastic piece 620 after winding a proper amount of the elastic piece 620 outside the second connecting section 1212 of the positioning collar 120. During site construction, the Kirschner tube 600 of the laminated cast-in-situ layer 500 on the plate is fixed with the positioning sleeve ring 120, so that the construction positioning precision of the site ventilation holes is high and the operation is simple.
In some embodiments, the side surface of the annular stiffener 122 facing the second connector segment 1212 is flush with the first surface 111.
In a possible implementation manner, referring to fig. 5, the annular stiffening rib 122 faces to one side surface of the second connecting section 1212 and is flush with the first surface 111, that is, the positioning collar 120 only protrudes out of the first surface 111 of the floor slab body 110 from the second connecting section 1212, the annular stiffening rib 122 and the first connecting section 1211 are both in an integral structure with the floor slab body 110, the connection strength of the positioning collar 120 and the floor slab body 110 is improved, the concentricity of the axis of the positioning collar 120 and the axis of the vent hole is ensured, the accurate positioning of the vent hole is realized, and the poor concentricity of the axis of the error accumulation type sleeve 600 and the axis of the vent hole is avoided.
In some embodiments, floor body 110 has floor ribs 130, waist ribs 140, and stirrups 150 disposed therein; the bottom ribs 130 and the waist ribs 140 are arranged parallel to the first surface 111, and the bottom ribs 130 and the waist ribs 140 do not protrude out of the side wall of the floor slab body 110; stirrup 150 extends in a first direction and protrudes beyond first surface 111; in the first direction, the stirrup 150 protrudes out of the first surface 111 to a height h 1 The second connecting section 1212 protrudes out of the first surface 111 to a height h 2 And h 1 ＞h 2 The method comprises the steps of carrying out a first treatment on the surface of the The orthographic projection of the floor slab body 110 of the floor slab 130, the waist bar 140 and the stirrup 150 is not overlapped with the orthographic projection of the vent hole on the floor slab body 110.
In a possible implementation manner, as shown in fig. 6, the floor body 110 is provided with the bottom ribs 130, the waist ribs 140 and the stirrups 150, where the plurality of bottom ribs 130 are disposed in a crossing manner and parallel to the first surface 111, and exemplary, a part of the bottom ribs 130 extend in the X direction in fig. 6, that is, the width direction of the floor body 110, and a part of the bottom ribs 130 extend in the Y direction in fig. 6, that is, the length direction of the floor body 110. Stirrup 150 extends in the Z direction in FIG. 6Waist ribs 140 are arranged at two corners of the top of the stirrup 150. The plurality of bottom ribs 130, the plurality of waist ribs 140, and the plurality of stirrups 150 form a reinforcement cage of the floor body 110, which is cast together with the concrete part at the factory to form a whole. For convenience of transportation, the bottom ribs 130 and the waist ribs 140 do not protrude from the side walls of the floor slab body 110, and it is understood that the bottom ribs 130 and the waist ribs 140 do not protrude from the side walls around the floor slab body 110; in order to facilitate subsequent assembly of the prefabricated odd plates 100, the stirrups 150 are raised above the first surface 111 of the floor body 110, facilitating connection of the reinforcing bars of the superimposed cast-in-situ layer 500 on the plates. The stirrup 150 is raised above the first surface 111, i.e. the top surface, of the floor body 110 by a height h 1 And h 1 In the range of 50-100mm, for example 60mm, 70mm, 80mm, 90mm or 100mm. h is a 1 Slightly higher than the positioning collar 120 by a height h 2 For example h 1 And h 2 The difference between (a) and (b) is about 50mm to ensure that the prefabricated kirschner plate 100 does not strike the positioning collar 120 during shipping or stacking.
In some embodiments, a first tendon group and a second tendon group are disposed in the floor body 110, the first tendon group being located on a side of the floor body 110 adjacent to the first surface 111, and the second tendon group being located on a side of the floor body 110 adjacent to the second surface 112; the first tendon group and the second tendon group each include a plurality of tendons 160 extending along a second direction, and the tendons 160 do not protrude from the side wall of the floor body 110, wherein the second direction is a length direction of the floor body 110; the front projection of the tendon 160 onto the floor body 110 does not overlap with the front projection of the vent hole onto the floor body 110.
In a possible implementation manner, as shown in fig. 6, the prefabricated plate 100 is a precast concrete slab with a certain thickness, and the tendons 160 are disposed along the length direction of the floor body 110, that is, in the Y direction in fig. 6, and are in two rows, that is, in the thickness direction of the floor body 110, that is, in the Z direction in fig. 6, respectively defined as a first tendon group and a second tendon group. By the prestress adjustment of the upper and lower rows of prestress ribs 160, the prefabricated Qishi plate 100 is realized, and the top surface of the floor slab body 110, namely the first surface 111 and the bottom surface, namely the second surface 112, are free from cracks in the production stage, the construction stage and the use stage, so that the cleanliness of an electronic factory building is not affected by dust generation caused by concrete cracking. Meanwhile, due to the application of prestress, the precast concrete cast-in-situ lamination layer with the thickness of 2-3 times of precast slab can be born on the precast slab 100 in the construction stage, the requirement of no support for floor construction in the construction stage can be realized by adopting thinner precast slab, and meanwhile, the thinner precast slab improves the transportation efficiency and reduces the requirement of the precast slab on hoisting equipment. Prefabricated odd plates 100, cast-in-place sections between the plates and overlapping cast-in-place layers on the plates form the whole assembled floor structure. The construction stage mould-free support-free construction method can save the cost of the template and the support frame body, save a large amount of support frame body dismantling time, and perform the subsequent electromechanical installation procedure in advance, complete the delivery time of the electronic factory building in advance, and put into production in advance, thereby realizing remarkable economic benefit. The electronic factory is characterized by large investment, so that a constructor needs to produce as soon as possible to obtain return on investment. Meanwhile, the prefabricated plate is thin, so that the requirement on hoisting equipment is low, and the cost of construction mechanical equipment can be reduced.
Illustratively, the prefabricated odd plates 100 act as bottom molds for the entire floor structure. In the prior art, the whole floor structure adopts cast-in-situ construction, a wood template is firstly supported, then steel bars are bound on the wood template, concrete is poured, and the wood template is removed after the concrete is solidified to have strength. In this embodiment, the prefabricated kirschner plate 100 is used, no wood template is required to be arranged, the prefabricated kirschner plate 100 can be directly used as a template for overlapping a cast-in-situ layer on an upper plate, and the prefabricated kirschner plate 100 is a part of the whole floor structure without dismantling the wood template. Meanwhile, a supporting frame is not required to be arranged in the pouring process.
The prefabricated Qishi plate 100 provided by the embodiment is adopted to build the floor structure of the electronic factory building, so that the construction process of the floor structure is greatly simplified, the process of laying a support frame body and a platform template is saved, meanwhile, the on-site Qishi cylinder 600 is fixed through the positioning lantern ring 120, the installation process is simple, and the positioning accuracy is guaranteed.
In some embodiments, the first tendon group is located a distance of 20-30mm, such as 20mm, 22mm, 24mm, 26mm, 28mm, or 30mm, from the first surface 111 in the first direction; and/or the second tendon group is spaced from the second surface 112 in the first direction by a distance of 20-30mm, such as 20mm, 22mm, 24mm, 26mm, 28mm or 30mm.
In some embodiments, the thickness d of the floor body 110 is 170-250mm, such as 170mm, 190mm, 200mm, 220mm, 240mm, or 250mm. Compared with the prior art, the precast concrete cast-in-situ lamination layer which can bear 2-3 times of precast slab thickness on the precast odd-shaped slab 100 in the construction stage can adopt thinner precast slab thickness to realize the support-free requirement of building roof construction in the construction stage due to the application of prestress, and meanwhile, the thinner precast slab improves the transportation efficiency and reduces the requirement of the precast slab on hoisting equipment.
In some embodiments, a tab 170 is disposed on a side of the side wall of the floor body 110 adjacent to the second surface 112, and the tab 170 cooperates with the side wall of the floor body 110 to form an L-shaped structure with an opening facing away from the floor body 110.
It should be noted that, the formation of the tab 170 may be formed by cutting out a partial region on the floor body 110. As shown in fig. 6, L-shaped corners are disposed around the floor body 110, and the removed portion is a side of the floor body 110 near the first surface 111, so as to form an upper plate lug 170. When a plurality of prefabricated odd plates 100 are spliced to form a floor structure, the splice between two adjacent prefabricated odd plates 100 is formed by splicing two lugs 170. The thickness of the tab 170 is significantly less than the thickness of the floor body 110 in the thickness direction of the prefabricated odd plates 100, i.e., the Z direction in fig. 6, and the thickness of the tab 170 is illustratively in the range of 50-100mm, such as 50mm, 60mm, 70mm, 80mm, 90mm, or 100mm.
It will be appreciated that when two prefabricated panels are tightly joined, a joint will be formed, which is a loss of rigidity of the building cover structure and has a negative effect on micro-vibration, so that the height of the joint is reduced as much as possible, and the height of the cast-in-place section is increased. When the prefabricated kirschner plates 100 provided in this embodiment are spliced, the inter-plate cast-in-situ section 400 is formed on the lugs 170 of two adjacent prefabricated kirschner plates 100, and the thickness of the lugs 170 is thinner, so that the height of the inter-plate cast-in-situ section 400 is increased, the influence of the close splice seam on rigidity and micro-vibration is greatly reduced, and the equivalent cast-in-situ micro-vibration effect is realized.
In some embodiments, the floor body 110 has through holes near the sidewallsTangential to the side walls of the floor body 110; in the second direction, the width of the lug 170 is a, and the distance between two adjacent through holes is s 1 And (2) andin the third direction, the width of the lug 170 is b, and the distance between two adjacent through holes is s 2 And->The third direction is the width direction of the floor body 110.
In one possible implementation, as shown in fig. 6, the outer wall of the positioning collar 120 is tangent to the sidewall of the floor body 110, where the sidewall is the sidewall of the floor body 110 after the tab 170 is formed, and the sidewall is the sidewall connected to the top surface of the floor body 110, i.e., the first surface 111. Along the Y-direction in FIG. 6, the width of the tab 170 is a and the spacing between two adjacent positioning collars 120 is s 1 And (2) andalong the X direction in FIG. 6, the width of the lug 170 is b, and the spacing between two adjacent positioning collars 120 is s 2 And (2) andafter the adjacent two prefabricated odd plates 100 are closely spliced, ventilation holes are uniformly distributed, the ventilation holes are arranged to the maximum extent, and the requirement of the opening ratio of the whole floor structure is improved.
In some embodiments, the hole wall of the vent hole is coated with a protective layer to prevent dust on the hole wall of the vent hole from affecting the cleanliness of the electronic factory building, so that structural decoration integration is realized.
In some embodiments, the protective layer comprises an epoxy layer. The epoxy resin is a thermosetting resin, is convenient to cure, has strong adhesive force, low shrinkage rate and strong chemical and dimensional stability, and can prevent the dust on the walls of the vent holes from affecting the cleanliness of the electronic factory buildings for a long time. As the electronic factory building has the requirement of cleanliness and has the control requirement on granularity in the air, the epoxy resin is brushed on the surface of the concrete, so that dust on the surface of the concrete can be avoided.
In a second aspect, embodiments of the present invention further provide a building cover structure, including prefabricated frame columns 200, support assemblies 300, and prefabricated kirschner-plates 100 according to any one of the embodiments of the first aspect, the support assemblies 300 being mounted to the prefabricated frame columns 200 for supporting the prefabricated kirschner-plates 100; the splice of two adjacent prefabricated odd plates 100 forms an inter-plate cast-in-place segment 400; the prefabricated Qishi plate 100 is laid with an on-plate superposed cast-in-situ layer 500 which is connected with the cast-in-situ section 400 between the plates; the stacked cast-in-situ layer 500 on the plate is internally provided with a Qishi cylinder 600, and the Qishi cylinder 600 is sleeved outside the second connecting section 1212 in the prefabricated Qishi plate 100 and is in interference fit with the second connecting section 1212.
In one possible implementation, referring to fig. 7, prefabricated kirschner plate 100 is placed on prefabricated frame posts 200 by hoisting and supported by support assemblies 300, which support assemblies 300 may be caps or detachable steel corbels. Of course, temporary supports 210 can be set up to support the pre-assembled plate 100 for temporary needs. As shown in fig. 8, the prefabricated frame column 200 may be prefabricated at a prefabricated factory, and the process of casting the column in situ is omitted. Illustratively, in the construction stage, the prefabricated kirschner plate 100 with the prestress applied is placed on the cap of the prefabricated frame column 200, so that support-free is realized. It will be appreciated that the cap may be replaced with a temporary on-column bracket.
As shown in fig. 9, an inter-plate cast-in-place section reinforcement cage 410 is provided above the lugs 170 between the prefabricated kirschner plates 100. The stirrup of the reinforcement cage of the superimposed cast-in-situ layer 500 on the slab adopts an opening hoop, is convenient to be connected with the stirrup 150 of the prefabricated Qishi plate 100, and after the cast-in-situ layer 500 reinforcement and the additional connecting reinforcement 420 are superimposed on the site binding slab, the cast-in-situ section 400 between the casting slabs and the concrete of the superimposed cast-in-situ layer 500 on the slab are poured, so that the whole floor forms an integral structure, and finally, the equivalent cast-in-situ two-way Qishi plate assembled floor structure with fixedly connected end parts is formed, thereby ensuring the requirement of a clean factory building on micro vibration.
Exemplary, the on-site construction procedure of the floor structure provided in this embodiment is as follows: paving individual temporary supports 210 under the plates, paving prefabricated Qishi plates 100 with prestress, superposing reinforcing steel bars of the cast-in-situ layer 500 on the binding plates, and dismantling the individual temporary supports 210 after the sleeve, namely Qishi cylinder 600 and Qishi cylinder 600 are integrally and horizontally detected, concreted and maintained, of the cast-in-situ layer 500 on the fixing plates. Compared with the on-site construction process in the prior art, the construction process of the floor structure is greatly simplified, the process of laying the support frame body and the platform template is saved, meanwhile, the on-site Qishi cylinder 600 is fixed through the positioning lantern ring 120, the installation process is simple, and the positioning accuracy is guaranteed.
In some embodiments, prefabricated Qie plate 100 has a thickness D, superimposed cast-in-place layer 500 has a thickness D, and 2 d.ltoreq.D.ltoreq.3D.
In one possible implementation, the thickness d of the prefabricated odd plates 100 is 170-250mm and the thickness of the entire floor structure is 600-1000mm, such as 600mm, 700mm, 800mm, 900mm, or 1000mm. The slab body 110 of the prefabricated odd plates 100 is relatively thin. However, due to the application of the prestress, the thickness D of the cast-in-situ layer 500, which is a concrete cast-in-situ layer on the prefabricated plate 100 which can bear 2-3 times of the prefabricated plate thickness, meets the requirement that D is more than or equal to 2D and less than or equal to 3D.
It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A prefabricated church plate comprising: floor body and positioning collar;
the floor body having opposed first and second surfaces and a plurality of ventilation holes extending through the floor body in a first direction; the first direction is the arrangement direction of the first surface and the second surface;
the positioning lantern ring comprises a lantern ring body and annular stiffening ribs sleeved outside the lantern ring body, the axis of the lantern ring body is coincident with the axis of the vent hole, and the size of the inner wall of the lantern ring body is equal to the size of the hole wall of the vent hole; the annular stiffening rib separates the lantern ring body into a first connecting section and a second connecting section along the axial direction of the lantern ring body; the first connecting section, the annular stiffening rib and the floor slab body are cast into an integrated structure in a factory, and the second connecting section protrudes out of the first surface of the floor slab body and is used for being sleeved in the odd-shaped cylinder in an interference manner to fix the odd-shaped cylinder;
the floor slab body is internally provided with stirrups, and the stirrups extend along the first direction and protrude out of the first surface; the height of the stirrup protruding out of the first surface along the first direction is h 1 The height of the second connecting section protruding out of the first surface is h 2 And h 1 ＞h 2 The method comprises the steps of carrying out a first treatment on the surface of the The front projection of the stirrup on the floor slab body is not overlapped with the front projection of the vent hole on the floor slab body;
a lug is arranged on one side, close to the second surface, of the side wall of the floor body, and the lug is matched with the side wall of the floor body to form an L-shaped structure with an opening deviating from the floor body; l-shaped lugs are arranged around the floor slab body.
2. The prefabricated odd-numbered plate according to claim 1, wherein a side surface of the annular stiffener facing the second connecting section is flush with the first surface.
3. The prefabricated church plate of claim 2, wherein the floor slab body is internally provided with a bottom rib and a waist rib; the bottom ribs and the waist ribs are arranged parallel to the first surface, and neither the bottom ribs nor the waist ribs extend out of the side wall of the floor slab body;
orthographic projections of the bottom ribs and the waist ribs on the floor body are not overlapped with orthographic projections of the vent holes on the floor body.
4. The prefabricated odd-numbered plate according to claim 1, wherein a first prestress rib group and a second prestress rib group are arranged in the floor body, the first prestress rib group is positioned on one side of the floor body close to the first surface, and the second prestress rib group is positioned on one side of the floor body close to the second surface;
the first prestress rib group and the second prestress rib group comprise a plurality of prestress ribs extending along a second direction, the prestress ribs do not protrude out of the side wall of the floor slab body, and the second direction is the length direction of the floor slab body;
the orthographic projection of the prestressed tendons on the floor body is not overlapped with the orthographic projection of the vent holes on the floor body.
5. The prefabricated church plate of claim 4, wherein the slab body has a thickness d of 170-250mm.
6. The prefabricated church plate of claim 5, wherein the through holes in the floor body proximate the sidewalls are tangential to the sidewalls of the floor body;
along the second direction, the width of the lug is a, and the distance between two adjacent through holes is s 1 And (2) andalong a third direction, the width of the lug is b, and the distance between two adjacent through holes is s 2 And->The third direction is the width direction of the floor slab body.
7. The prefabricated panel of claim 1, wherein the walls of the vent holes are coated with a protective layer.
8. The prefabricated odd-numbered plate of claim 7, wherein the protective layer comprises an epoxy layer.
9. A building cover structure comprising prefabricated frame posts, a support assembly and the prefabricated kirschner plate of any one of claims 1-8, said support assembly being mounted to said prefabricated frame posts for supporting said prefabricated kirschner plate; the spliced parts of two adjacent prefabricated Qishi plates form an inter-plate cast-in-situ section; the prefabricated Qishi plates are paved with an on-plate superposed cast-in-situ layer and are connected with the inter-plate cast-in-situ section; and an odd-shaped cylinder is arranged in the overlapped cast-in-situ layer on the plate, and is sleeved on the outer side of the second connecting section in the prefabricated odd-shaped plate and in interference fit with the second connecting section.
10. The floor structure of claim 9, wherein the thickness of said prefabricated odd plates is D, the thickness of said superimposed cast-in-place layer on said plates is D, and 2D is less than or equal to 3D.
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| CN202310981407.6A CN117052036B (en) | 2023-08-04 | 2023-08-04 | Prefabricated odd-shaped plate and floor structure |
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| CN202310981407.6A CN117052036B (en) | 2023-08-04 | 2023-08-04 | Prefabricated odd-shaped plate and floor structure |
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| CN117052036B true CN117052036B (en) | 2024-04-12 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031952A (en) * | 2012-12-27 | 2013-04-10 | 沈阳易筑建材经销有限公司 | Manufacturing method of fabricated support-free prefabricated ribbed light superposed floor slab |
| CN208396104U (en) * | 2018-07-06 | 2019-01-18 | 上海天华建筑设计有限公司 | A kind of floor construction |
| CN112609883A (en) * | 2020-12-21 | 2021-04-06 | 中建科技集团有限公司 | Bidirectional composite floor slab without ribs on four sides and without support and form removal and construction method thereof |
| CN116220266A (en) * | 2023-01-12 | 2023-06-06 | 鞍钢中电建筑科技股份有限公司 | Floor structure |
-
2023
- 2023-08-04 CN CN202310981407.6A patent/CN117052036B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031952A (en) * | 2012-12-27 | 2013-04-10 | 沈阳易筑建材经销有限公司 | Manufacturing method of fabricated support-free prefabricated ribbed light superposed floor slab |
| CN208396104U (en) * | 2018-07-06 | 2019-01-18 | 上海天华建筑设计有限公司 | A kind of floor construction |
| CN112609883A (en) * | 2020-12-21 | 2021-04-06 | 中建科技集团有限公司 | Bidirectional composite floor slab without ribs on four sides and without support and form removal and construction method thereof |
| CN116220266A (en) * | 2023-01-12 | 2023-06-06 | 鞍钢中电建筑科技股份有限公司 | Floor structure |
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Address after: 100142 808, zone 2, 8 / F, No. 160, North West Fourth Ring Road, Haidian District, Beijing Applicant after: Angang Zhongdian Construction Technology Co.,Ltd. Applicant after: China Electronics Engineering Design Institute Co.,Ltd. Address before: 100142 808, zone 2, 8 / F, No. 160, North West Fourth Ring Road, Haidian District, Beijing Applicant before: Angang Zhongdian Construction Technology Co.,Ltd. Applicant before: CHINA ELECTRONICS ENGINEERING DESIGN INSTITUTE Co.,Ltd. |
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