CN114427276B - Prestressed reinforcement hook type additional steel member laminated slab and construction method thereof - Google Patents
Prestressed reinforcement hook type additional steel member laminated slab and construction method thereof Download PDFInfo
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- CN114427276B CN114427276B CN202111539519.3A CN202111539519A CN114427276B CN 114427276 B CN114427276 B CN 114427276B CN 202111539519 A CN202111539519 A CN 202111539519A CN 114427276 B CN114427276 B CN 114427276B
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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
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a prestressed reinforcement hook type additional steel member laminated slab and a construction method thereof, wherein the prestressed reinforcement hook type additional steel member laminated slab comprises a prefabricated laminated slab, a steel member, an additional steel sheet and a fastening piece, wherein the prefabricated laminated slab is provided with a plurality of through grooves, prestressed longitudinal reinforcements are pre-embedded on the prefabricated laminated slab, the steel member is rotatably connected to the prestressed longitudinal reinforcements in the through grooves, the steel member comprises a sleeve sleeved on the prestressed longitudinal reinforcements, a lower frame welded on the sleeve and a screwed pipe vertically welded on the sleeve, and the inner wall of the screwed pipe is provided with internal threads; the sleeve is also sleeved with two lantern rings, and an upper frame is fixedly arranged on each lantern ring; the additional steel sheet is provided with a steel sheet hole corresponding to the threaded pipe, and the fastening piece is in threaded connection with the steel sheet hole and the threaded pipe; the problem of need erect a large amount of supports when the easy fracture of current prefabricated coincide bottom plate transportation and hoist and mount in-process, pouring superimposed sheet cast-in-place layer concrete to lead to the construction measure cost to increase, the efficiency of construction reduces is solved.
Description
Technical Field
The invention belongs to the technical field of building construction, and relates to a prestressed reinforcement hook type additional steel member laminated slab and a construction method thereof.
Background
The prefabricated composite floor slab is an assembled integral floor slab formed by laminating prefabricated slabs and cast-in-place reinforced concrete layers. The composite floor slab has good integrity, the upper and lower surfaces of the slab are smooth, the decoration of a finish coat is convenient, and the composite floor slab is suitable for high-rise buildings and large-bay buildings with higher requirement on the integral rigidity. When the prefabricated composite floor slab is used for building in the construction site prefabricated house, because the laminated slab span is large, the bearing capacity of the laminated slab is insufficient, and in the construction process, corresponding vertical supports must be arranged, so that the construction period is prolonged. In addition, the composite floor slab is usually hoisted by a crane in the assembling process, and the composite floor slab is transported to a specific position for assembling. When the composite floor slab is hoisted at present, generally, a truss is hooked by a hook according to the size of the composite floor slab, and then a hoisting device is used for hooking a hoisting ring and hoisting the composite floor slab to a preset position. Because the thickness of the bottom plate of the composite floor slab is smaller, cracks are easy to generate in the transportation and hoisting process of the composite floor slab, so that the cost of construction measures is increased, and the construction efficiency is reduced.
Disclosure of Invention
In view of the above, the invention provides a prestressed tendon hook type additional steel member laminated slab and a construction method thereof, in order to solve the problems that the existing prefabricated laminated bottom plate is easy to crack in the transportation and hoisting processes, and a large number of supports are required to be erected when cast-in-place layer concrete of the laminated slab is poured, so that the construction measure cost is increased and the construction efficiency is reduced.
In order to achieve the purpose, the invention provides the following technical scheme:
a prestressed reinforcement hook type additional steel member laminated slab comprises a prefabricated laminated slab, steel members, additional steel sheets and fasteners, wherein a plurality of through grooves are formed in the prefabricated laminated slab, prestressed longitudinal reinforcements are pre-embedded in the prefabricated laminated slab, the steel members are rotatably connected to the prestressed longitudinal reinforcements in the through grooves, each steel member comprises a sleeve sleeved on the prestressed longitudinal reinforcements, a lower frame welded on the sleeve and a screwed pipe vertically welded on the sleeve, and internal threads are formed in the inner walls of the screwed pipes; the sleeve is also sleeved with two lantern rings, and an upper frame is fixedly arranged on each lantern ring; the additional steel sheet is provided with a steel sheet hole corresponding to the screwed pipe, and the fastening piece is in threaded connection with the steel sheet hole and the screwed pipe.
Go up the frame rotation upwards and lift by crane prefabricated superimposed sheet as the lifting hook in the steel member, the lower frame rotation downwards carries out fixed connection with additional steel sheet in the steel member.
Furthermore, the inner diameter of the lantern ring is larger than the outer diameter of the sleeve, and the inner diameter of the sleeve is larger than the diameter of the longitudinal prestressed rib in the prefabricated laminated slab. The upper frame upwards rotates in the steel member and is used as a lifting hook to lift the prefabricated laminated slab, and the lower frame downwards rotates in the steel member and is fixedly connected with the additional steel sheet.
Furthermore, the width of the lower frame is smaller than the thickness of the prefabricated composite slab, a concrete cast-in-place layer is poured on the prefabricated composite slab, and the width of the upper frame is smaller than the thickness of the concrete cast-in-place layer on the prefabricated composite slab. Like this in the steel member the underframe can not bulge prefabricated superimposed sheet bottom after downwards rotating, be convenient for realize additional steel sheet and correspond the fixed connection of prefabricated superimposed sheet through the bolt fastener, prevent that post-cast leaks thick liquid. The upper frame rotates upwards to be lifted to a specified position as a lifting hook and then passes through cast-in-place concrete, and the upper frame is embedded into a concrete cast-in-place layer.
Further, the steel member is including cup jointing the sleeve on the prestressing force longitudinal rib, the underframe of welding on the sleeve and the screwed pipe of vertical welding at the sleeve middle part, and the internal thread has been seted up to the inner wall of screwed pipe. The steel sheet holes on the additional steel sheets correspond to the threaded pipes, so that the additional steel sheets and the corresponding prefabricated composite slabs are fixed through a plurality of fasteners after the lower frame on the steel member is rotated downwards.
Further, the steel member includes the sleeve of cup jointing on the prestressing force longitudinal reinforcement, the underframe of welding on the sleeve and the screwed pipe of vertical welding between sleeve and underframe, and the internal thread is seted up to the inner wall of screwed pipe.
Further, the fastener is hexagon bolt or the octagonal bolt who is provided with the external screw thread.
A construction method of a prestressed reinforcement hook type additional steel member composite slab comprises the following steps:
A. respectively sleeving a steel member on two pre-buried longitudinal prestressed reinforcements, placing the steel member on a laminated slab generation mold platform, wrapping the periphery of the steel member by using foam, and pouring concrete to a standard thickness to form a prefabricated laminated slab serving as a bottom plate of a laminated floor slab;
B. after the surface of the prefabricated laminated plate is subjected to floating treatment and maintained to meet the lifting strength requirement, taking out foams around the steel member, downwards rotating a lower frame in the steel member, and fixedly connecting the lower frame with a steel sheet hole in the additional steel sheet through a bolt fastener; simultaneously, the upper frame in the steel member is rotated upwards to be used as a lifting hook for lifting the prefabricated composite slab;
C. and (4) passing a hoisting steel cable through an upper frame on the prefabricated composite slab to hoist and transport the prefabricated composite slab to a proper position for installation and placement, and casting concrete on the prefabricated composite slab in situ to finish the manufacture of the composite floor slab.
The invention has the beneficial effects that:
1. the prestressed rib hook type additional steel member laminated slab skillfully adopts the steel members with two rotatable sides, the upper frame in the steel member rotates upwards to be used as a lifting hook to lift the prefabricated laminated slab, and the lower frame in the steel member rotates downwards to be fixedly connected with the additional steel sheets, so that the steel member realizes two functions, and can also be used as a template during the pouring of the laminated slab, thereby facilitating the lifting of the prefabricated laminated slab and simultaneously realizing the template-free support of the prefabricated laminated slab, and solving the problems that the existing prefabricated laminated bottom plate is easy to crack during the transportation and lifting processes, and a large amount of supports are required to be supported during the pouring of cast-in-place layer concrete of the laminated slab, thereby increasing the construction measure cost and reducing the construction efficiency.
2. According to the prestressed rib hook type additional steel member composite slab disclosed by the invention, the upper frame in the steel member rotates upwards to serve as a hook to lift the prefabricated composite slab, and the lower frame in the steel member rotates downwards and can be embedded into a finally cast composite floor slab after being fixedly connected with the additional steel sheet.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural view of a prestressed reinforcement hook type additional steel member composite slab according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a front view of the prestressed reinforcement hook type additional steel member composite slab of the present invention;
FIG. 4 is a schematic structural diagram of a steel member in the prestressed reinforcement hook type additional steel member composite slab according to the present invention;
FIG. 5 is a schematic structural diagram of an additional steel sheet in the prestressed reinforcement hook type additional steel member composite slab of the present invention;
fig. 6 is a schematic structural view of a fastener in the prestressed reinforcement hook type additional steel member composite slab of the present invention.
Reference numerals: the prefabricated composite slab comprises a prefabricated composite slab 1, through grooves 11, steel members 2, sleeves 21, threaded pipes 22, collars 23, a lower frame 24, an upper frame 25, foam 26, additional steel sheets 3, steel sheet holes 31 and fasteners 4.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and embodiments may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Example one
As shown in fig. 1 ~ 6 additional steel member superimposed sheet of prestressing tendons lifting hook formula, including prefabricated superimposed sheet 1, steel member 2, additional steel sheet 3 and fastener 4, prefabricated superimposed sheet 1 is last to have seted up two rows of four rows and leads to groove 11, the pre-buried prestressing force of having on prefabricated superimposed sheet 1 indulging the muscle, steel member 2 rotates to be connected on the prestressing force of leading to the inslot 11 indulges the muscle, 2 shape size of steel member and the 11 looks adaptations of leading to the groove, steel member 2 is including cup jointing sleeve 21 on the prestressing force indulges the muscle, the underframe 24 of welding on sleeve 21 and the screwed pipe 22 of vertical welding at sleeve 21 middle part, the internal thread is seted up to screwed pipe 22's inner wall. Two lantern rings 23 are further sleeved on the sleeve 21, and an upper frame 25 is fixedly mounted on the lantern rings 23.
The upper frame 25 of the steel member 2 rotates upward to lift the prefabricated slab 1 as a hook, and the lower frame 24 of the steel member 2 rotates downward to be fixedly connected with the additional steel sheets 3.
The length of the additional steel sheet 3 is matched with that of the prefabricated laminated slab 1, a steel sheet hole 31 corresponding to the threaded pipe 22 is formed in the additional steel sheet 3, the fastening piece 4 is a hexagon bolt or an octagonal bolt provided with external threads, and the prefabricated laminated slab 1 and the additional steel sheet 3 are fixed by inserting the appropriate fastening piece 4 into the steel sheet hole 31 and the threaded pipe 22.
The construction method of the prestressed reinforcement hook type additional steel member composite slab comprises the following steps:
A. respectively sleeving the steel member 2 on the two pre-buried prestressed longitudinal bars, placing the steel member on a laminated slab generation mold table, wrapping the periphery of the steel member 2 by using foam 26, and pouring concrete to a standard thickness to form a prefabricated laminated slab 1 serving as a bottom plate of a laminated floor slab;
B. after the surface of the prefabricated composite slab 1 is trowelled and oxidized to meet the requirement of hoisting strength, the foam 26 around the steel member 2 is taken out, the lower frame 24 in the steel member 2 is rotated downwards, the lower frame 24 is fixedly connected with the steel sheet hole 31 on the additional steel sheet 3 through the bolt fastening piece 4, and the prefabricated composite slab 1 is prevented from generating stress cracks in the hoisting process; meanwhile, the upper framework 25 in the steel member 2 is rotated upwards to be used as a lifting hook for lifting the prefabricated composite slab 1;
C. and (3) passing a hoisting steel cable through the upper frame 25 on the prefabricated composite slab 1 to hoist and transport the prefabricated composite slab 1 to a proper position for installation and placement, and casting concrete on the prefabricated composite slab 1 in situ to finish the manufacture of the composite floor slab.
After the prefabricated composite slab 1 is hoisted and transported to a proper position, if the cast-in-place concrete layer is thinner, the upper frame 25 in the steel member 2 can be rotated downwards, and the concrete is cast in place after the upper frame is horizontally placed in the through groove 11 of the prefabricated composite slab 1. If the cast-in-place concrete layer is thicker, the upper framework 25 in the steel member 2 can be directly cast in place on the prefabricated composite slab 1 by directly casting concrete on the prefabricated composite slab to embed the concrete in the cast-in-place concrete layer.
Example two
The prestressed tendon hook type additional steel member shown in fig. 4 is different from the first embodiment in that the inner diameter of the collar 23 is larger than the outer diameter of the sleeve 21, and the inner diameter of the sleeve 21 is larger than the diameter of the prestressed longitudinal tendon in the prefabricated composite slab 1. This facilitates the upward rotation of the upper frame 25 in the steel member 2 as a hook to lift the prefabricated slab 1 and also facilitates the downward rotation of the lower frame 24 in the steel member 2 to be fixedly connected with the additional steel sheet 3. The width of the lower frame 24 is smaller than the thickness of the prefabricated composite slab 1, so that the lower frame 24 in the steel member 2 does not protrude out of the bottom of the prefabricated composite slab 1 after rotating downwards, and the fixed connection of the additional steel sheets 3 and the corresponding prefabricated composite slab 1 is conveniently realized through the bolt fasteners 4. The width of the upper frame 25 is smaller than the thickness of a concrete cast-in-place layer on the prefabricated composite slab 1, so that the upper frame 25 in the steel member 2 rotates upwards to be lifted to a specified position as a lifting hook and then passes through cast-in-place concrete, and the upper frame is embedded into the concrete cast-in-place layer.
EXAMPLE III
The difference between the third embodiment and the second embodiment is that the steel member 2 includes a sleeve 21 sleeved on the longitudinal prestressed reinforcement, a lower frame 24 welded to the sleeve 21, and a threaded pipe 22 vertically welded to both ends of the sleeve 21, and an inner wall of the threaded pipe 22 is provided with an internal thread. The steel sheet holes 31 on the additional steel sheets 3 correspond to the threaded pipes 22, so that after the lower frames 24 on the steel members 2 are rotated downwards, the additional steel sheets 3 and the corresponding prefabricated composite slabs 1 are fixed through the plurality of fastening pieces 4, the rigidity of the prefabricated composite slabs 1 is further improved, and the risk of cracking in the hoisting, stacking, transporting and installing processes of the prefabricated composite slabs 1 is reduced.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (6)
1. A prestressed reinforcement hook type additional steel member laminated slab is characterized by comprising a prefabricated laminated slab, a steel member, an additional steel sheet and a fastening piece, wherein the prefabricated laminated slab is provided with a plurality of through grooves; the sleeve is also sleeved with two lantern rings, and an upper frame is fixedly arranged on each lantern ring; the additional steel sheet is provided with a steel sheet hole corresponding to the screwed pipe, and the fastening piece is in threaded connection with the steel sheet hole and the screwed pipe.
2. The prestressed reinforcement hook-type additional steel member composite slab as claimed in claim 1, wherein the inner diameter of said collar is larger than the outer diameter of said sleeve, and the inner diameter of said sleeve is larger than the diameter of the prestressed longitudinal bar in the prefabricated composite slab.
3. The prestressed hook-type additional steel member composite slab as claimed in claim 1, wherein said lower frame has a width smaller than the thickness of said prefabricated composite slab, said prefabricated composite slab having a cast-in-place concrete layer thereon, and said upper frame has a width smaller than the thickness of the cast-in-place concrete layer thereon.
4. The prestressed tendon hook-type additional steel member composite slab as claimed in claim 1, wherein said threaded pipe is welded vertically between the sleeve and the lower frame.
5. The prestressed rebar hook-type additional steel member composite slab of claim 1, wherein the fastener is a hex bolt or an octagonal bolt provided with external threads.
6. The method of constructing a prestressed reinforcement hook-type additional steel member composite slab as claimed in claim 1, comprising the steps of:
A. respectively sleeving a steel member on two pre-buried prestressed longitudinal bars, placing the steel member on a laminated slab generation mold table, wrapping the periphery of the steel member by using foam, and pouring concrete to a standard thickness to form a prefabricated laminated slab serving as a bottom plate of a laminated floor slab;
B. after the surface of the prefabricated laminated plate is subjected to floating treatment and maintained to meet the lifting strength requirement, taking out foams around the steel member, downwards rotating a lower frame in the steel member, and fixedly connecting the lower frame with a steel sheet hole in the additional steel sheet through a bolt fastener; simultaneously, the upper frame in the steel member is rotated upwards to be used as a lifting hook for lifting the prefabricated composite slab;
C. and (4) passing a hoisting steel cable through an upper frame on the prefabricated composite slab to hoist and transport the prefabricated composite slab to a proper position for installation and placement, and casting concrete on the prefabricated composite slab in situ to finish the manufacture of the composite floor slab.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111539519.3A CN114427276B (en) | 2021-12-15 | 2021-12-15 | Prestressed reinforcement hook type additional steel member laminated slab and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111539519.3A CN114427276B (en) | 2021-12-15 | 2021-12-15 | Prestressed reinforcement hook type additional steel member laminated slab and construction method thereof |
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| CN114427276A CN114427276A (en) | 2022-05-03 |
| CN114427276B true CN114427276B (en) | 2022-09-30 |
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| CN115233882A (en) * | 2022-07-05 | 2022-10-25 | 重庆大学 | Close piece together and exempt from to support coincide floor based on additional rigidity piece of bottom drop-down spring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356854A (en) * | 2001-06-01 | 2002-12-13 | Itogumi Construction Co Ltd | Method for building concrete wall using floor slab of building |
| CN210288680U (en) * | 2019-05-31 | 2020-04-10 | 西安建工绿色建筑集团有限公司 | Assembled standard layer module |
| CN212026784U (en) * | 2019-12-31 | 2020-11-27 | 邹胜斌 | Concrete laminated bottom plate with temporary supporting piece |
| CN212957167U (en) * | 2020-05-07 | 2021-04-13 | 苏州五嘉晨建筑工业有限公司 | Precast concrete superimposed sheet with external detachable enhancement truss |
-
2021
- 2021-12-15 CN CN202111539519.3A patent/CN114427276B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356854A (en) * | 2001-06-01 | 2002-12-13 | Itogumi Construction Co Ltd | Method for building concrete wall using floor slab of building |
| CN210288680U (en) * | 2019-05-31 | 2020-04-10 | 西安建工绿色建筑集团有限公司 | Assembled standard layer module |
| CN212026784U (en) * | 2019-12-31 | 2020-11-27 | 邹胜斌 | Concrete laminated bottom plate with temporary supporting piece |
| CN212957167U (en) * | 2020-05-07 | 2021-04-13 | 苏州五嘉晨建筑工业有限公司 | Precast concrete superimposed sheet with external detachable enhancement truss |
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