CN114856063A - Transverse connecting structure of steel bar truss floor, floor structure and method - Google Patents
Transverse connecting structure of steel bar truss floor, floor structure and method Download PDFInfo
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- CN114856063A CN114856063A CN202210504440.5A CN202210504440A CN114856063A CN 114856063 A CN114856063 A CN 114856063A CN 202210504440 A CN202210504440 A CN 202210504440A CN 114856063 A CN114856063 A CN 114856063A
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- steel bar
- formwork
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- slab
- plate body
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 155
- 239000010959 steel Substances 0.000 title claims abstract description 155
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 89
- 238000009415 formwork Methods 0.000 claims description 72
- 230000003014 reinforcing effect Effects 0.000 claims description 28
- 238000010276 construction Methods 0.000 claims description 27
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims 1
- 230000002457 bidirectional effect Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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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
- E04B5/16—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
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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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
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0627—Three-dimensional reinforcements composed of a prefabricated reinforcing mat combined with reinforcing elements protruding out of the plane of the mat
- E04C5/0631—Reinforcing mats combined with separate prefabricated reinforcement cages or girders
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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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/38—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings for plane ceilings of concrete
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B2001/4192—Connecting devices specially adapted for embedding in concrete or masonry attached to concrete reinforcing elements, e.g. rods or wires
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention relates to a transverse connecting structure of a steel bar truss floor, a floor structure and a method, wherein the transverse connecting structure comprises a plurality of steel bar truss floors, each steel bar truss floor comprises a plate body, each plate body is provided with a truss structure, a plurality of transverse steel bars transversely arranged along the plate body are further arranged in each plate body, the end parts of the transverse steel bars extend out of the plate bodies to form extending parts, the extending parts of adjacent steel bar truss floors are arranged in a staggered mode, a concrete structure is arranged between the adjacent plate bodies, and the extending parts are buried in the concrete structure.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a steel bar truss floor slab connecting structure, a floor slab structure and a method.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The steel bar truss floor slab is characterized in that a whole-cast floor slab is changed into a prefabricated part and a cast-in-place part according to the stress characteristics of use. The prefabricated part is manufactured in a factory and then transported to a construction site for hoisting and assembling, and the steel bar truss is used as a part of floor slab reinforcing bars. The prefabricated part bears the load in the construction stage, and simultaneously as the template on post-cast concrete layer, after cast-in-place partial concrete reaches the strength requirement, prefabricated layer and cast-in-place layer form wholly, bear the various loads in the structure use stage, to the steel bar truss floor, relevant research patent is more, and most existing steel bar truss floor patent mainly is to one-way floor, and steel bar truss floor transversely need not effective connection. For bidirectional plates with more application scenes in industrial buildings, transverse connection needs to be considered between steel bar truss floors so as to meet the requirement of bidirectional stress of the floors.
At present, the research and application of the related patents of the transverse connection of the steel bar truss floor are less. The patent application of publication number CN 102425306 a proposes a longitudinal connection mode of steel bar truss floor support plates, wherein steel bar trusses at two ends are supported on a beam or a wall, and concrete at the middle connection part is poured to form a steel bar truss floor. This patent has proposed the mode of steel bar truss longitudinal connection, does not solve the problem of steel bar truss floor transverse connection.
Patent CN202416650U has proposed a self-supporting ribbed steel bar truss concrete coincide floor, this patent has proposed realizing the transverse connection of steel bar truss floor by horizontal reinforcing bar, but does not solve the problem how to install horizontal reinforcing bar 4 after steel bar truss floor takes one's place, in fact, after many steel bar truss floors take one's place, the bottom reinforcing bar of perpendicular steel bar truss direction passes a plurality of steel bar truss floors because of need along horizontal full length, the installation of reinforcing bar is very difficult, and in the conventional design, for two-way floor, the bottom reinforcing bar interval is usually about 150 and about 200mm, the work load of bottom reinforcing bar of wearing is huge, embody steel bar truss floor industrialization's advantage not.
CN103953147A patent application proposes a two-way laminated slab of assembled steel bar truss, which proposes to reserve holes in the concrete prefabricated layer of the steel bar truss floor slab through PVC pipes, and after hoisting all the steel bar truss floor slabs in relevant areas in place in blocks, transversely insert steel bars into the reserved PVC holes, and assemble the prefabricated layers of adjacent laminated slabs together. This patent application is similar to aforementioned patent CN202416650U, proposes that the transverse connection of steel bar truss floor is realized through the mode of crossing the reinforcing bar, and in actual engineering, it is equally very difficult to realize crossing the reinforcing bar with the mode of this patent, and work load is big, especially to the floor that the span is big and crossing reinforcing bar demand is thick, and the reinforcing bar often can not realize crossing.
The patent application of CN103498524A proposes a laminated slab/beam with reinforced steel bar truss and its making and connecting method, this application mainly proposes a method for solving the longitudinal connection or support connection of steel bar truss floor slab, the main implementation mode is: and placing a small triangular truss at the end part of the steel bar truss floor slab in advance, and after the steel bar truss floor slab is installed in place, drawing out the small triangular truss to anchor the small triangular truss in the laminated slab/support in the opposite direction. This application has proposed the mode that steel bar truss longitudinal connection and support are connected, does not solve steel bar truss floor transverse connection's problem.
Patent CN 202990197U proposes a lap-jointed bar type prestressed two-way laminated slab, as shown in fig. 7, a prestressed thin slab or a width slab with a steel bar truss is prefabricated, and continuous S-shaped lap-jointed bars are adopted at the slab joints. The S-shaped lap joint reinforcing steel bars at the splicing seams of the composite slabs are arranged on the upper surfaces of the thin slabs, and the transverse stress transmission of the composite slabs cannot be realized only for structural consideration, so that the S-shaped lap joint reinforcing steel bars can be only used for one-way floor slabs and are not suitable for two-way stress floor slabs.
In summary, aiming at the problem that the transverse connection of the existing steel bar truss floor slab has no effective and convenient solution, a set of steel bar truss floor slab connection form suitable for the bidirectional plates needs to be researched, so that the effective transverse connection of the steel bar truss floor slab is realized, the bidirectional bearing function of the floor slab is realized, meanwhile, the construction is convenient, the work efficiency is improved, and the labor intensity and the construction risk of field construction personnel are reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a steel bar truss floor slab connecting structure, and can solve the problem that a steel bar truss floor slab is difficult to traverse steel bars; the problem that effective bidirectional bearing of the floor slab cannot be realized is solved; the problem of the unable high-speed joint construction of steel bar truss floor is solved.
In order to achieve the purpose, the invention adopts the following technical scheme
In a first aspect, an embodiment of the present invention provides a transverse connection structure for a steel bar truss floor, including a plurality of steel bar truss floors, where each steel bar truss floor includes a plate body, the plate body is provided with a truss structure, and a plurality of transverse steel bars transversely arranged along the plate body are further provided in the plate body, ends of the transverse steel bars extend out of the plate body to form extending portions, the extending portions of adjacent steel bar truss floors are staggered, a concrete structure is provided between adjacent plate bodies, and the extending portions are embedded in the concrete structure.
Optionally, the concrete structure is formed by pouring UHPC concrete.
Optionally, a sleeve is embedded in the side part of the plate body, and the bottom surface of the sleeve is flush with the bottom surface of the plate body;
furthermore, the sleeve is internally fixed with a reinforcing steel bar which extends out of the plate body through the top surface of the plate body.
Optionally, a longitudinal steel bar longitudinally arranged along the plate body is arranged in the concrete structure, and the longitudinal steel bar is fixed with the transverse steel bar.
In a second aspect, an embodiment of the present invention provides a floor slab structure, including the transverse connection structure of the steel bar truss floor slab described in the first aspect, a cast-in-place concrete layer is poured on the slab body and the upper surface of the concrete structure, and the truss structure is embedded inside the cast-in-place concrete layer.
In a third aspect, an embodiment of the present invention provides a construction method of a floor slab structure, including the steps of:
hoisting a plurality of steel bar truss floor slabs in place;
erecting a template at the abutted seam of the two adjacent plate bodies, and pouring a concrete structure between the two adjacent plate bodies by using the template;
and a cast-in-place concrete layer is poured on the upper surface of the plate body.
Optionally, a sleeve is embedded in the side part of each plate body, the bottom surface of the sleeve is flush with the bottom surface of each plate body, a screw is connected to the sleeve in a threaded manner, the screw is connected with a nut in a threaded manner after the template passes through the screws arranged on two adjacent plate bodies, and the nut is utilized to tightly press the template on the bottom surface of the splicing seam of the two adjacent plate bodies, so that the template is supported;
or the sleeve is in threaded connection with a formwork supporting steel bar, the formwork supporting steel bar is an L-shaped steel bar, the vertical part of the formwork supporting steel bar is fixed with the sleeve, the formwork is arranged between the formwork supporting steel bars of the adjacent plate bodies and supported by the horizontal part of the formwork supporting steel bar, and the formwork supporting steel bar is used for supporting the formwork.
Optionally, after the steel bar truss floor is hoisted in place, a plurality of hanging plates arranged at intervals are placed, the hanging plates are placed on the upper surfaces of the splicing parts of the adjacent plate bodies, the bottom surfaces of the splicing parts of the template and the adjacent two plate bodies are attached and then connected with the hanging plates through connecting pieces, the template is erected, and a concrete structure is cast by utilizing a gap between the two adjacent hanging plates.
Optionally, after the steel bar truss floor is hoisted in place, a template is arranged between two adjacent plate bodies, the bottom surface of the template is flush with the bottom surfaces of the plate bodies, one side end surface of the template is attached to the side surface of one of the two adjacent plate bodies, the other side surface of the template is attached to the side surface of the other plate body, and the template is fixed to the extending portion of the transverse steel bar through a connecting piece after being placed in place, so that the template is erected.
Optionally, after the steel bar truss floor slab is hoisted in place, the template is placed in place, the top surface of the template is attached to the bottom surfaces of the side portions of the two adjacent plate bodies, and the template is supported by the support piece, so that the template is erected.
The invention has the beneficial effects that:
1. according to the transverse connecting structure of the steel bar truss floor slab, the plate bodies are provided with the transverse steel bars, the transverse steel bars extend out of the plate bodies and extend into the concrete structure between the adjacent plate bodies, transverse force transmission is achieved, and therefore the bearing requirement of the bidirectional plate is met.
2. According to the transverse connecting structure of the steel bar truss floor slab, the concrete structure is formed by pouring UHPC concrete, the characteristics of high strength, high performance and high bonding force of the UHPC concrete are utilized, the requirement on the splicing width of the steel bar truss floor slab is reduced to the maximum extent, and the effective anchoring and force transmission functions of transverse steel bars are realized within the minimum splicing width.
3. According to the construction method of the floor slab, the template is fixed by the screw, the nut or the formwork supporting steel bar or the hanging plate and the connecting piece, or the template is fixed with the extending part of the transverse steel bar through the connecting piece, a scaffold does not need to be erected when the template is erected, influence and interference on construction activities of the lower part of the floor slab are avoided, in the construction process of the upper floor slab, installation and other operations in the lower layer space can be normally carried out, parallel construction of the upper layer and the lower layer is realized, and the construction efficiency is greatly improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a plan view showing the overall structure of example 1 of the present invention;
FIG. 2 is an elevation view of the whole structure of embodiment 2 of the present invention;
FIG. 3 is an elevation view of the template in the supported state according to embodiment 3 of the present invention;
FIG. 4 is an elevation view of the template in the supported state according to embodiment 4 of the present invention;
FIG. 5 is an elevation view of the template in the supported state according to embodiment 5 of the present invention;
FIG. 6 is an elevation view of the whole structure of embodiment 7 of the present invention;
FIG. 7 is an elevation view of the template in the supported state according to embodiment 8 of the present invention;
FIG. 8 is an elevation view showing the supported state of the template in accordance with embodiment 9 of the present invention;
the concrete structure comprises a plate body 1, a truss structure 2, longitudinal steel bars 3, transverse steel bars 4, a concrete structure 5, a cast-in-place concrete layer 6, a formwork 8, a hanging plate 9, a screw rod 10, a nut 11, a formwork support rod 12, a welding nail 13, a sleeve 14, a reinforcing steel bar 15, a screw rod 16 and a formwork supporting steel bar 17.
Detailed Description
Example 1
This embodiment provides a steel bar truss floor transverse connection structure, as shown in fig. 1, including a plurality of steel bar truss floors that set up side by side, set up the piece between the adjacent steel bar truss floor.
In this embodiment, the location is vertical for the length direction of steel bar truss floor, and is horizontal for the width direction of steel bar truss floor.
The steel bar truss floor slab comprises a slab body 1, the slab body 1 adopts concrete slab, the thickness of the concrete slab is 5cm-10cm, the concrete slab is connected with a truss structure 2, concretely, a plurality of longitudinal steel bars longitudinally arranged along the concrete slab are arranged in the concrete slab, in two adjacent longitudinal steel bars, one of the longitudinal steel bars is bound or welded and fixed with one end of each of a plurality of V-shaped steel bars, the other end of the other longitudinal steel bar is bound and fixed with the other end of each of the plurality of V-shaped steel bars, the corners of the V-shaped steel bars extend out of the upper portion of the slab body 1, the plurality of V-shaped steel bars are connected into a whole by utilizing a longitudinal steel bar 3 positioned above the slab body, and the V-shaped steel bars are welded or bound and fixed with the longitudinal steel bar 3.
The concrete slab is also internally provided with a plurality of transverse reinforcing steel bars 4, the transverse reinforcing steel bars 4 are arranged along the transverse direction of the concrete slab, and the plurality of transverse reinforcing steel bars 4 are distributed along the longitudinal direction of the concrete slab.
The transverse reinforcing bars 4 extend out of the plate body through two transverse side surfaces of the plate body 1 to form extending parts.
The length of the extension is required to meet the set requirements, and in this embodiment the length of the extension is 13dmm, where d is the diameter of the transverse reinforcement. The distance between the plate bodies of two adjacent steel bar truss floor slabs is 13d +50 mm.
The transverse steel bars and the longitudinal steel bars in the concrete slab are fixed in a binding or welding mode.
The extension parts of two adjacent steel bar truss floors are arranged in a staggered mode in the horizontal direction and are also arranged in a staggered mode in the vertical direction.
Through the protruding portion of horizontal reinforcing bar 4 and the cooperation of concrete structure 5, horizontal biography power has been realized, thereby the demand of bearing of two-way board has been realized, and through setting up a plurality of horizontal reinforcing bars 4, with the help of concrete structure 5, realized horizontal reinforcing bar 4 at the effective anchor of less apart from, realize horizontal reinforcing bar 4 biography power demand, thereby the difficulty that needs the long horizontal reinforcing bar of a plurality of floor break-over among the prior art has been solved, can improve floor efficiency of construction by a wide margin, reduce the horizontal reinforcing bar installation degree of difficulty.
In order to further enhance the strength of the concrete structure 5, a plurality of longitudinal steel bars longitudinally arranged along the plate body are embedded in the concrete structure, and the longitudinal steel bars and the extending parts of the transverse steel bars are bound or welded and fixed.
In the embodiment, the concrete structure 5 is formed by pouring UHPC concrete, and by means of the characteristics of high strength, high performance and high bonding force of the UHPC concrete, the requirement on the splicing seam width of the steel bar truss floor is reduced to the maximum extent, and the effective anchoring and force transmission functions of transverse steel bars are realized within the minimum splicing seam width.
Example 2
This embodiment provides a floor structure, as shown in fig. 2, the transverse connection structure of the rib-truss floor described in embodiment 1 is provided, a cast-in-place concrete layer 6 is poured on a plane formed by the upper surface of the plate body 1 and the upper surface of the concrete structure 5, the truss structure 2 is embedded inside the cast-in-place concrete layer 6, a reinforcing mesh structure formed by longitudinal steel bars and transverse steel bars is further provided inside the cast-in-place concrete layer 6 to enhance the overall structural strength of the cast-in-place concrete layer, and the plurality of rib-truss floors, the concrete structures 5 between the rib-truss floors and the cast-in-place concrete layer 6 together form the floor structure.
Example 3
The present embodiment provides a construction method of a floor slab structure according to embodiment 2, including the following steps:
step 1: a plurality of steel bar truss floor slabs prefabricated in a factory are hoisted to a set position, the steel bar truss floor slabs are hoisted in place, and the extending parts of the two adjacent plate bodies 1 are arranged in a staggered mode.
Step 2: a plurality of longitudinal steel bars 7 are erected between two adjacent plate bodies 1, and the longitudinal steel bars 7 are bound and fixed with the extending parts of the transverse steel bars 4.
And step 3: and erecting a formwork 8 for pouring a concrete structure at the abutted seam of the two adjacent plate bodies by a hanging formwork.
As shown in fig. 3, the concrete method for erecting the formwork in the hanging mode comprises the following steps:
step a: a plurality of hanging plates 9 are placed on the upper surface of the abutted seam of two adjacent plate bodies, the hanging plates 9 are distributed along the longitudinal intervals of the plate bodies 1, one side of each hanging plate 9 is lapped on the upper surface of the side part of one plate body 1, and the other side of each hanging plate 9 is lapped on the upper surface of the side part of the other plate body 1.
In this embodiment, the hanging board 9 is 100mm wide along the transverse direction of the plate body 1, and the adjacent hanging boards 9 are arranged at an interval of 1 m.
Step b: a plurality of hanging plates are fixed with the template through connecting pieces, and the template is attached to the lower surface of the abutted seam of the adjacent plate bodies.
The connecting piece adopts screw rod 10 and nut 11, specifically, is provided with the screw hole with screw rod 10 complex on hanging board 9, with screw rod 10 and hanging board 9 threaded connection, screw rod 10 passes the piece space between the adjacent plate body 1
In another embodiment, the hanging plate 9 is provided with a smooth hole matching with the screw rod 10, and after the screw rod 10 passes through the through hole, a rod section above the hanging plate 9 is in threaded connection with a nut, and the nut is in contact with the upper surface of the hanging plate.
And (3) hoisting the template 8, wherein the template is provided with a through hole, the template is hoisted to a screw rod 10 to penetrate through the template 8, and the template in the embodiment is arranged along the longitudinal length of the plate body. The screw rod 10 is connected with a nut 11 in a threaded manner, and the template is tightly pressed on the lower surface of the spliced seam of the plate body by the nut 11, so that the template is erected.
And step 3: and pouring UHPC concrete into the abutted seams of the adjacent plate bodies 1 by utilizing the gaps between the adjacent hanging plates 9, wherein the pouring thickness is the same as that of the plate bodies, and forming the concrete structure 5 after the UHPC concrete is cured to the set strength.
And 4, step 4: longitudinal and transverse reinforcing bars of the floor slab are installed on a plane formed on the upper surfaces of the slab body 1 and the concrete structure 5.
And 5: and pouring the cast-in-place concrete layer 6 until the set thickness is reached, and maintaining the cast-in-place concrete layer to the set strength.
Step 6: and (4) taking down the nut, screwing out or cutting the screw rod, and taking down the hanging plate and the template to finish the construction of the floor slab.
Example 4
This embodiment provides a construction method of a floor slab described in embodiment 2, compared with embodiment 3, step 1 and step 2 are the same as embodiment 3, as shown in fig. 4, the formwork supporting manner in step 3 is a formwork supporting manner, specifically, after a steel bar truss floor slab is hoisted in place and longitudinal steel bars between adjacent plate bodies are bound, a formwork 8 is hoisted, the top surface of the formwork 8 is made to fit with the bottom surface of the abutted seam of the adjacent plate bodies 1, after the formwork 8 is hoisted in place, the formwork is supported by using a formwork support rod 12, formwork supporting is completed, after formwork supporting is completed, UHPC concrete is poured, after the UHPC concrete is cured to a set strength, a cast-in-place concrete layer is poured, and the construction method of the concrete structure and the cast-in-place concrete layer is the same as embodiment 3, and repeated description is not given here. And (5) after the cast-in-place concrete layer is maintained to a set strength, removing the template stay bars and the template.
Example 5
This embodiment provides a method for constructing a floor slab according to embodiment 2, and compared with embodiments 3 and 4, the method of step 1 and step 2 is the same as embodiments 3 and 4, the formwork supporting mode in step 3 is a mode-free formwork supporting, specifically, as shown in fig. 5, a connecting member is welded on the upper surface of a formwork 8, the connecting member adopts a welding nail 13, the width of the formwork 8 is equal to the distance between adjacent plate bodies, and the formwork supporting method is as follows: the method comprises the steps of hoisting a formwork 8 in place, enabling the bottom surface of the formwork 8 to be flush with the bottom surfaces of plate bodies 1, enabling one side surface of the formwork 8 to be attached to the side surface of one of the adjacent plate bodies 1, enabling the other side surface of the formwork 8 to be attached to the side surface of the other plate body 1, after the formwork 8 is hoisted in place, binding and fixing welding nails 13 and the extending parts of transverse steel bars 4 or longitudinal steel bars 7 between the adjacent plate bodies 1 through steel wires to complete erecting of the formwork 8, then pouring a concrete structure 5 and a cast-in-place concrete layer 6 between the plate bodies in sequence, wherein the pouring method is the same as that of the embodiment 3 and the embodiment 4.
Example 6
This embodiment provides a steel bar truss floor transverse connection structure, lies in the sleeve 14 buried underground in the lateral part of plate body with the difference of embodiment 1, the bottom face of sleeve 14 and the bottom surface looks parallel and level of plate body 1, sleeve 14 are the internal thread sleeve, and 14 threaded connection of sleeve have a reinforcing bar 15, and the reinforcing bar stretches out to the plate body outside through the upper surface of plate body, and the reinforcing bar stretches out the tip to the plate body top and is provided with the crotch structure.
Example 7
This embodiment provides a floor slab structure, as shown in fig. 6, including the transverse connection structure of the steel bar truss floor slab described in embodiment 6, a cast-in-place concrete layer is poured on the upper surfaces of the slab body and the concrete structure, the cast-in-place concrete layer is the same as the cast-in-place concrete layer described in embodiment 2, and the truss structure and the portion of the reinforcing steel bar extending out of the slab body are embedded in the cast-in-place concrete layer.
Example 8
The present embodiment provides a method for constructing a floor slab structure according to embodiment 7, including the steps of:
step 1: a plurality of steel bar truss floor slabs prefabricated in a factory are hoisted to a set position, the steel bar truss floor slabs are hoisted in place, and the extending parts of the two adjacent plate bodies 1 are arranged in a staggered mode.
Step 2: a plurality of longitudinal steel bars 7 are erected between two adjacent plate bodies, and the longitudinal steel bars 7 are bound and fixed with the extending parts.
And step 3: erecting a formwork 8 for pouring a concrete structure at a joint of two adjacent plate bodies, wherein the erecting mode of the formwork 8 is a hanging mode erecting mode, and specifically, as shown in fig. 7, the method comprises the following steps:
the template 8 is hoisted in place, the upper surface of the template 8 is attached to the lower surface of the abutted seam of the adjacent plate body, the screw rods 16 penetrate through two side parts of the template 8, the screw rod 16 on one side is in threaded connection with the sleeve 14 of the plate body on one side, the screw rod 16 on the other side is in threaded connection with the sleeve 14 of the plate body on the other side, nuts are in threaded connection on the screw rods 16, the template 8 is tightly pressed on the lower surface of the abutted seam of the plate body 1 through the nuts, and the erection of the template is completed.
And 4, step 4: and longitudinal steel bars and transverse steel bars of the floor are installed on the plane formed on the plate body and the upper surface of the concrete structure.
And 5: and pouring the cast-in-place concrete layer 6 until the set thickness is reached, and maintaining the cast-in-place concrete layer to the set strength.
Step 6: and (5) taking down the nut, screwing out or cutting the screw rod, and taking down the template to finish the construction of the floor slab.
Example 9
This embodiment provides a construction method of a floor slab structure described in embodiment 7, and compared with embodiment 1, the formwork supporting mode in step 3 is an embracing mode formwork supporting mode, specifically, as shown in fig. 8, after the formwork is hoisted in place, formwork supporting steel bars 17 are in threaded connection in the sleeve, the formwork supporting steel bars 17 are L-shaped steel bars, vertical portions of the L-shaped steel bars are in threaded connection with the sleeve 14, the formwork supporting steel bars 17 are rotated until horizontal portions of the formwork supporting steel bars 17 support the formwork 8, and the formwork 8 is pressed against the bottom surface of the slab body, so that the formwork 8 is supported, other steps are the same as those in embodiment 7, and repeated description is omitted here, and after the cast-in-place concrete layer is cured to a set strength, the formwork supporting steel bars and the formwork are removed.
In the construction methods of the embodiment 3, the embodiment 4, the embodiment 5, the embodiment 8 and the embodiment 9, when the template is erected, no scaffold needs to be erected, so that influence and interference on construction activities of the lower part of the floor slab are avoided, in the construction process of the upper floor slab, operations such as installation in the lower space can be normally performed, parallel construction of the upper floor slab and the lower floor slab is realized, and the construction efficiency is greatly improved.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. The utility model provides a steel bar truss floor transverse connection structure, includes a plurality of steel bar truss floors, and the steel bar truss floor includes the plate body, and the plate body is equipped with truss structure, and its characterized in that still is provided with a plurality of horizontal reinforcing bars that transversely set up along the plate body in the plate body, and the tip of horizontal reinforcing bar stretches out to the outside extension that forms of plate body, and the setting of staggering of the extension of adjacent steel bar truss floor and be equipped with concrete structure between the adjacent plate body, and the extension buries inside the concrete structure.
2. The transverse connection structure of a steel bar truss floor as claimed in claim 1, wherein said concrete structure is formed by casting UHPC concrete.
3. The transverse connection structure of a steel bar truss floor as claimed in claim 1, wherein the side of the slab body is embedded with sleeves, and the bottom surfaces of the sleeves are flush with the bottom surface of the slab body;
furthermore, the sleeve is internally fixed with a reinforcing steel bar which extends out of the plate body through the top surface of the plate body.
4. The transverse connection structure of a steel bar truss floor as claimed in claim 1, wherein the concrete structure is internally provided with longitudinal reinforcing bars disposed along a longitudinal direction of the plate body, the longitudinal reinforcing bars being fixed to the transverse reinforcing bars.
5. A floor structure comprising the transverse connection structure of a steel bar truss floor as claimed in any one of claims 1 to 4, wherein a cast-in-place concrete layer is cast on the upper surfaces of the slab body and the concrete structure, and the truss structure is embedded in the cast-in-place concrete layer.
6. A method of constructing a floor structure as claimed in claim 5, comprising the steps of:
hoisting a plurality of steel bar truss floor slabs in place;
erecting a template at the abutted seam of the two adjacent plate bodies, and pouring a concrete structure between the two adjacent plate bodies by using the template;
and a cast-in-place concrete layer is poured on the upper surface of the plate body.
7. A construction method of a floor slab structure as claimed in claim 6, wherein sleeves are embedded in the side portions of the slab bodies, the bottom surfaces of the sleeves are flush with the bottom surfaces of the slab bodies, screws are connected to the sleeves in a threaded manner, after the formworks pass through the screws installed on two adjacent slab bodies, the screws are connected with nuts in a threaded manner, and the formworks are pressed against the bottom surfaces of the joints of the two adjacent slab bodies by the nuts to complete the erection of the formworks;
or the sleeve is in threaded connection with a formwork supporting steel bar, the formwork supporting steel bar is an L-shaped steel bar, the vertical part of the formwork supporting steel bar is fixed with the sleeve, the formwork is arranged between the formwork supporting steel bars of the adjacent plate bodies and supported by the horizontal part of the formwork supporting steel bar, and the formwork supporting steel bar is used for supporting the formwork.
8. A construction method of a floor slab structure as claimed in claim 6, wherein after the steel bar truss floor slab is hoisted in place, a plurality of hanging plates arranged at intervals are placed, the hanging plates are placed on the upper surfaces of the joints of the adjacent plate bodies, the formwork is attached to the bottom surfaces of the joints of the adjacent two plate bodies and then connected with the hanging plates through connecting pieces, the erection of the formwork is completed, and the concrete structure is cast by utilizing the gaps between the adjacent two hanging plates.
9. A construction method of a floor slab structure as claimed in claim 6, wherein after the steel bar truss floor slab is hoisted in place, a formwork is arranged between two adjacent plate bodies, the bottom surface of the formwork is flush with the bottom surfaces of the plate bodies, one side end surface of the formwork is attached to the side surface of one of the two adjacent plate bodies, the other side surface of the formwork is attached to the side surface of the other plate body, and the formwork is fixed to the extending part of the transverse steel bar through the connecting piece after being placed in place, so as to complete the erection of the formwork.
10. A method of constructing a floor structure as claimed in claim 6, wherein the formwork is placed in position after the steel truss floor is hoisted into position, the top surface of the formwork is fitted to the bottom surfaces of the sides of two adjacent panels, and the formwork is supported by the support members to complete the erection of the formwork.
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| CN202210504440.5A CN114856063A (en) | 2022-05-10 | 2022-05-10 | Transverse connecting structure of steel bar truss floor, floor structure and method |
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