CN113293990A - Steel bar truss floor support plate supporting structure and construction method of steel structure cast-in-place floor slab - Google Patents
Steel bar truss floor support plate supporting structure and construction method of steel structure cast-in-place floor slab Download PDFInfo
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- CN113293990A CN113293990A CN202110545618.6A CN202110545618A CN113293990A CN 113293990 A CN113293990 A CN 113293990A CN 202110545618 A CN202110545618 A CN 202110545618A CN 113293990 A CN113293990 A CN 113293990A
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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
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
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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
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/50—Girders, beams, or the like as supporting members for forms
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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
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/50—Girders, beams, or the like as supporting members for forms
- E04G11/52—Girders, beams, or the like as supporting members for forms of several units arranged one after another
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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
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/50—Girders, beams, or the like as supporting members for forms
- E04G11/54—Girders, beams, or the like as supporting members for forms of extensible type, with or without adjustable supporting shoes, fishplates, or the like
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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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/04—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements
- E04G17/042—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements being tensioned by threaded elements
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Abstract
The invention provides a steel bar truss floor bearing plate supporting structure and a construction method of a steel structure cast-in-place floor slab, belonging to the technical field of constructional engineering, wherein the steel bar truss floor bearing plate supporting structure comprises: the main structure steel beam is in an I-shaped structure and is connected with the main structure steel column; the supporting beam assembly consists of a middle truss beam, an end truss beam I and an end truss beam II, wherein the middle truss beam is detachably connected with the end truss beam I and the end truss beam II are positioned at two ends of the middle truss beam and are used for supporting the steel bar truss floor bearing plate; and the steel beam connecting assembly is arranged below the supporting beam assembly and used for detachably connecting the supporting beam assembly with the main structure steel beam. According to the steel beam connecting assembly, the supporting beam assembly is detachably connected with the main structure steel beam through the steel beam connecting assembly, the main structure steel beam, the supporting beam assembly and the steel beam connecting assembly are matched to support the steel bar truss floor bearing plate, no steel pipe or fastener is needed to be erected, construction is simple, material consumption is low, and turnover utilization rate is high.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a steel bar truss floor support plate supporting structure.
Background
The steel bar truss floor support plate is a combined template formed by welding and shaping upper and lower layers of longitudinal steel bars (namely upper and lower chords) and bent small-diameter steel bars (namely web bars) into a steel bar truss and connecting the steel bar truss and a bottom die into a whole.
The steel bar truss floor bearing plate can be produced in a factory in a standardized manner, the steel bar arrangement intervals are uniform, the thickness of the concrete protective layer is consistent, the construction quality of a floor slab is improved, the on-site steel bar binding engineering quantity can be obviously reduced, the construction progress is accelerated, the construction safety guarantee is increased, the advantages of simplicity and convenience in installation, high construction speed and good quality control are achieved, and therefore the assembled steel bar truss floor bearing plate is applied more and more widely along with the continuous development of steel structure building technology.
In the process of implementing the invention, the inventor finds that the technology has at least the following defects:
for a long-span steel bar truss floor support plate, under the dual action of the self-weight load of concrete and the dynamic load during construction, large deflection is easily formed at the midspan part, so that the stress of the whole structure system is adversely affected. The existing solution is to set up steel pipe or square timber as the support below steel bar truss floor carrier plate, but need erect innumerable steel pipe and fastener like this, and not only the installation is very loaded down with trivial details with the dismantlement work, and the material consumption is higher moreover, leads to the turnover utilization ratio of material to hang down.
Disclosure of Invention
Based on the background problem, the invention aims to provide a steel bar truss floor bearing plate supporting structure, a steel beam of a main structure, a supporting beam assembly and a steel beam connecting assembly are matched to support the steel bar truss floor bearing plate, all the assemblies are detachably connected, a steel pipe and a fastener do not need to be erected, the construction is simple, the material consumption is low, and the turnover utilization rate is high; the invention also aims to provide a construction method of the steel structure cast-in-place floor slab.
In order to achieve the above object, in one aspect, the embodiment of the present invention provides a technical solution:
steel bar truss building carrier plate bearing structure includes:
the main structure steel beam is in an I-shaped structure and is connected with the main structure steel column;
the supporting beam assembly consists of an end truss beam I, a middle truss beam and an end truss beam II which are sequentially spliced and used for supporting the steel bar truss floor bearing plate;
and the steel beam connecting assembly is arranged below the supporting beam assembly and used for detachably connecting the supporting beam assembly with the main structure steel beam.
Further, the middle truss girder comprises a steel pipe I and a steel pipe II which are distributed in parallel, and a plurality of vertical connecting pipes I which are vertically connected between the steel pipe I and the steel pipe II;
the end truss girder I comprises a steel pipe III, a steel pipe IV, a plurality of vertical connecting pipes II and end connecting pipes, wherein the steel pipe III and the steel pipe IV are horizontally distributed, the vertical connecting pipes II are vertically connected between the steel pipe III and the steel pipe IV, the end connecting pipes are positioned at the ends of the steel pipe III and the steel pipe IV, and the end truss girder II has the same structure as the end truss girder I;
the inner diameters of the steel pipe I and the steel pipe II are larger than the outer diameters of the steel pipe III and the steel pipe IV or the outer diameters of the steel pipe I and the steel pipe II are smaller than the inner diameters of the steel pipe III and the steel pipe IV.
Furthermore, the end truss girder is provided with a fixed pipe for being connected with the steel girder connecting assembly, and the fixed pipe is internally provided with internal threads.
Further, girder steel coupling assembling sets up in pairs to connect respectively tip truss girder I and tip truss girder II, girder steel coupling assembling includes:
the device comprises a support plate I and a support plate II, wherein the support plate I and the support plate II are oppositely arranged, a support groove I is formed in the support plate I, and a support groove II is formed in the support plate II;
the nut is fixed between the support plate I and the support plate II;
the screw is in threaded connection with the nut and is connected with the fixed pipe;
the supporting structure comprises an ear plate I and an ear plate II, wherein the ear plate I is connected with a supporting plate I, the ear plate I is connected with the supporting plate II, the ear plate I and the ear plate II are both hook-shaped structures, the hook part of the ear plate I and the supporting groove I are arranged oppositely, and the hook part of the ear plate II and the supporting groove II are arranged oppositely to clamp the main structure steel beam. .
Furthermore, horizontal base plates are fixed on the supporting grooves I and the supporting grooves II, and the supporting plates I and the supporting plates II extend out of the horizontal base plates to press the main structure steel beam.
Furthermore, otic placode I and extension board I swing joint, otic placode II and extension board II swing joint to match the major structure girder steel of not unidimensional.
Furthermore, a waist-shaped hole I is horizontally formed in the ear plate I, a corresponding waist-shaped hole II is formed in the support plate I, adjusting bolts penetrate through the waist-shaped hole I and the waist-shaped hole II, and adjusting nuts are screwed on the adjusting bolts;
the connection structure of the ear plate II and the support plate II is the same as that of the ear plate I and the support plate I.
Furthermore, a plurality of square supporting tubes are distributed between the supporting beam assembly and the steel bar truss floor bearing plate, the sizes of the square supporting tubes are different, and the extending direction of the square supporting tubes is perpendicular to the extending direction of the supporting beam assembly.
On the other hand, the embodiment of the invention provides a construction method of a steel structure cast-in-place floor slab, which is characterized in that when a three-layer floor slab with the height of one section of column of a steel structure building is constructed, a steel bar truss floor bearing plate required by each layer is laid firstly, and a steel bar truss floor bearing plate supporting structure is adopted to support the steel bar truss floor bearing plate;
and then, firstly carrying out concrete pouring on the third floor, taking the third floor as a support for bearing an upper steel structure and construction load when the concrete of the third floor reaches a set strength, upwards carrying out construction of the upper steel structure, and simultaneously, sequentially carrying out construction on the first floor and the second floor from bottom to top.
Further, the support of the steel bar truss floor slab comprises the following steps:
firstly, positioning and fixing a steel beam connecting assembly and a main structure steel beam, then installing a supporting beam assembly, and then connecting the supporting beam assembly and the steel beam connecting assembly;
when the supporting beam assembly and the steel beam connecting assembly are connected, the screw of the steel beam connecting assembly is inserted into the fixed pipe of the supporting beam assembly, and then the screw is rotated to be connected with the fixed pipe, and at the moment, the supporting beam assembly is initially erected;
then, a square supporting pipe is arranged above the supporting beam component along the direction vertical to the extending direction of the supporting beam component;
and finally, rotating the screw to move upwards, pushing the supporting beam assembly to move upwards so as to enable the top of the square supporting tube to be in close contact with the steel bar truss floor bearing plate, and tightly supporting the end part of the square supporting tube and the lower wing of the main structure steel beam by using a batten to ensure that the square supporting tube is firmly fixed.
Compared with the prior art, the invention has the following effects:
1. the supporting structure comprises a main structure steel beam, a supporting beam assembly and a steel beam connecting assembly, wherein the supporting beam assembly is detachably connected with the main structure steel beam through the steel beam connecting assembly, and the main structure steel beam, the supporting beam assembly and the steel beam connecting assembly are matched to support the steel bar truss floor bearing plate, so that steel pipes and fasteners are not required to be erected, the construction is simple, the material consumption is low, and the turnover utilization rate is high.
2. The support beam assembly comprises the middle truss beam, the end truss beams I and the end truss beams II which are positioned at two ends of the middle truss beam, and the middle truss beam, the end truss beams I and the end truss beams II are connected in a splicing mode, so that the support beam assembly can be suitable for supporting steel bar truss floor bearing plates with different spans by controlling the splicing depth, and the application range is wide.
3. The steel beam connecting assembly is connected with the fixing pipe of the supporting beam assembly through the screw, and the main structure steel beam is clamped and supported through the matching of the vertical plate and the lug plate, so that the mounting is convenient.
4. The steel beam connecting assembly is of an adjustable structure, the lug plate and the vertical plate are horizontally provided with corresponding waist-shaped holes, the waist-shaped holes are penetrated with adjusting bolts, the adjusting bolts are in threaded connection with adjusting nuts, and the lug plate can be moved by loosening the adjusting nuts, so that the main structure steel beams can be conveniently fixed on one hand, and the main structure steel beams with different sizes can be matched on the other hand.
5. The invention also provides a plurality of square supporting tubes between the supporting beam assembly and the steel bar truss floor bearing plate, the sizes of the square supporting tubes are different, the supporting beam assembly is composed of three parts for adapting to different spans, and the splicing of the middle truss girder, the end truss girder I and the end truss girder II is realized, so that the sizes of the middle truss girder, the end truss girder I and the end truss girder II are different, and thus, the top end of the supporting beam assembly and the bottom surface of the steel bar truss floor bearing plate have pores.
6. The construction method of the steel structure cast-in-place floor slab solves the defect of low construction speed existing in the prior art of sequential construction from bottom to top.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
Fig. 1 is a front view of a steel truss floor deck support structure according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a support beam assembly in embodiment 1 of the present invention;
fig. 3 is a schematic structural view of a steel beam connecting assembly in embodiment 1 of the present invention;
FIG. 4 is a schematic structural view of an ear plate in example 1 of the present invention;
fig. 5 is a process flow chart of a construction method of a steel structure cast-in-place floor slab in embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. indicate orientations or positional relationships based on specific use states, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Example 1
In order to solve the problems of complex process, low material turnover rate and the like of the existing large-span steel bar truss floor support plate supported by steel pipes and square timbers, an embodiment of the invention provides a steel bar truss floor support plate supporting structure, as shown in fig. 1, comprising: major structure girder steel 1, supporting beam subassembly 2 and girder steel coupling assembling 3, supporting beam subassembly 2 sets up in steel bar truss building carrier plate 100's below for form the support to steel bar truss building carrier plate 100, girder steel coupling assembling 3 is used for being connected supporting beam subassembly 2 and major structure girder steel 1, and it is fixed to form the support to supporting beam subassembly 2.
In this embodiment, as shown in fig. 1, the main structural steel beams 1 are arranged in pairs to form a multi-point support for the supporting beam assembly 2, specifically, the main structural steel beams 1 are i-shaped, connected to the main structural steel columns, and the top ends thereof are fixed to the steel bar truss floor deck 100.
In this embodiment, in order to meet the requirements of different construction sites, the supporting beam assembly 2 is an assembly structure, as shown in fig. 2, the supporting beam assembly 2 specifically comprises a middle truss girder 201, and an end truss girder I202 and an end truss girder II 203 connected to two ends of the middle truss girder 201, and the middle truss girder 201, the end truss girder I202 and the end truss girder II 203 are connected in an insertion manner.
Specifically, the middle truss girder 201 comprises a steel pipe I201-1, a steel pipe II201-2 and a plurality of vertical connecting pipes I201-3 vertically connected between the steel pipe I201-1 and the steel pipe II201-2, wherein the steel pipe I201-1 and the steel pipe II201-2 are distributed in parallel, and the vertical connecting pipes I201-3 located on two sides extend out of two ends of the steel pipe I201-1 and the steel pipe II201-2, so that a space is reserved for splicing the middle truss girder 201, the end truss girder I202 and the end truss girder II 203.
The end truss girder I202 is connected to the left side of the middle truss girder 201 and comprises a steel pipe III 202-1, a steel pipe IV 202-2 which are horizontally distributed, a plurality of vertical connecting pipes II 202-3 which are vertically connected between the steel pipe III 202-1 and the steel pipe IV 202-2, and an end connecting pipe 202-4 which is positioned at the left end of the steel pipe III 202-1 and the steel pipe IV 202-2.
The end truss girder II 203 is connected to the right side of the middle truss girder 201 and has the same structure as the end truss girder I202.
In order to connect the end truss girder I202 and the end truss girder II 203 with the middle truss girder 201, the inner diameters of the steel pipe I201-1 and the steel pipe II201-2 are larger than the outer diameters of the steel pipe III 202-1 and the steel pipe IV 202-2, so that the steel pipe III 202-1 can be inserted into the steel pipe I201-1, the steel pipe IV 202-2 can be inserted into the steel pipe II201-2, specifically, the steel pipe I201-1 and the steel pipe III 202-1 can be in clearance fit, and the steel pipe II201-2 and the steel pipe IV 202-2 can be in clearance fit, so as to ensure the splicing strength.
In other embodiments, the outer diameters of steel pipes I201-1 and II201-2 may be smaller than the inner diameters of steel pipes III 202-1 and IV 202-2.
It should be noted that, in actual construction, the supporting beam assembly 2 is subjected to blanking welding on site according to a designed size, after the middle truss girder 201, the end truss girder I202 and the end truss girder II 203 are manufactured, the assembly is performed in a segmented manner, a certain splicing depth is ensured during splicing to ensure that the supporting beam assembly 2 is firmly connected, the whole supporting beam assembly 2 is ensured to be in a horizontal state after splicing, and the supporting beam assembly 2 can be suitable for steel bar truss floor bearing plates with different spans by controlling the splicing depth.
In order to further improve the strength of the support beam assembly 2, in this embodiment, as shown in fig. 2, an angle steel I201-4 is further obliquely arranged between two adjacent vertical connecting pipes I201-3 of the middle truss girder 201, and an angle steel II 202-5 is obliquely arranged between two adjacent vertical connecting pipes II 202-3 of the end truss girder I202 and between the vertical connecting pipe II 202-3 and the end connecting pipe 202-4.
In order to connect to the steel beam connection assembly 3, as shown in fig. 2, in the present embodiment, a fixing pipe 202-6 is provided at the bottom end of the end truss girder I202, and an internal thread is provided in the fixing pipe 202-6 to be screwed with a screw 304 described later.
It should be noted that the end truss girder II 203 of the present embodiment has the same structure as the end truss girder I202, and therefore, detailed description of the structure of the end truss girder II 203 is not repeated in the present embodiment.
In this embodiment, as shown in fig. 1, the steel beam connection assemblies 3 are also arranged in pairs and correspond to the main structure steel beams 1 one by one to connect the end truss beams I202 and II 203, respectively.
Specifically, as shown in fig. 3, the steel beam connection assembly 3 includes: plate I301, plate II 302, nut 303, screw 304, ear plate I305, and ear plate II 306.
As shown in fig. 3, the support plate I301 and the support plate II 302 are rectangular plates, the support plate I301 and the support plate II 302 are arranged oppositely, the nut 303 is fixed between the support plate I301 and the support plate II 302, the screw 304 is screwed on the nut 303, and as shown in fig. 1, the top of the screw 304 is connected with the fixing tube 202-6, so as to connect the steel beam connection assembly 3 with the support beam assembly 2.
In order to facilitate the connection between the screw 304 and the fixed pipe 202-6, as shown in fig. 3, a nut 304-1 is fixed to the end of the screw 304, so that the screw 304 can be rapidly rotated by a pistol drill to be connected to the fixed pipe 202-6, thereby improving the working efficiency.
The ear plate I305 and the ear plate II 306 are also oppositely arranged, the ear plate I305 is connected with the support plate I301, and the ear plate II 306 is connected with the support plate II 302, specifically, as shown in fig. 4, the ear plate I305 is in a hook-shaped structure and is provided with a bent hook portion 305-1, and the ear plate II 306 has the same structure as the ear plate I305.
As shown in fig. 1, the ear plate and the support plate cooperate to support and fix the main structural steel beam 1, specifically, as shown in fig. 3, a support groove I301-1 is horizontally formed on the support plate I301, the support groove I301-1 is arranged opposite to the hook portion 305-1 of the ear plate I305, a support groove II is horizontally formed on the support plate II 302, the support groove II is arranged opposite to the hook portion of the ear plate II 306, and at this time, the main structural steel beam 1 is clamped between the hook portion and the support groove to form fixation.
In order to further improve the fixing effect, as shown in fig. 1 and 3, in the present embodiment, a horizontal shim plate 307 is fixed on the support groove I301-1 and the support groove II, and the horizontal shim plate 307 extends out of the support plate I301 and the support plate II 302, so that the main structural steel beam 1 is pressed.
In order to match main structure steel beams 1 with different sizes, in the present embodiment, the ear plate I305 is movably connected with the support plate I301, the ear plate II 306 is movably connected with the support plate II 302, the ear plate II 306 is identical to the support plate II 302 with the connection structure of the ear plate I305 and the support plate I301, and the connection structure of the ear plate I305 and the support plate I301 is described in detail as an example.
A waist-shaped hole I305-2 is horizontally formed in the ear plate I305, a corresponding waist-shaped hole II is formed in the support plate I301, an adjusting bolt 308 penetrates through the waist-shaped hole I305-2 and the waist-shaped hole II, and an adjusting nut is screwed on the adjusting bolt 308. When fixed major structure girder steel 1, unscrew adjusting nut earlier, then remove the otic placode so that the otic placode just in time blocks the lower wing of major structure girder steel 1, then can be with the rigidity of otic placode screwing up adjusting nut, and then with major structure girder steel 1 locking.
In this embodiment, as shown in fig. 1, three square support tubes 4 are further distributed between the support beam assembly 2 and the steel bar truss floor deck 100, the three square support tubes 4 have different sizes, and the extending direction of the square support tubes 4 is perpendicular to the extending direction of the support beam assembly 2.
Because the supporting beam assembly 2 is composed of three parts in order to adapt to different spans, in order to realize the splicing of the middle truss girder 201, the end truss girder I202 and the end truss girder II 203, the sizes of the steel pipes I201-1 and II201-2 are different from the sizes of the steel pipes III 202-1 and IV 202-2, so that the top end of the supporting beam assembly 2 and the bottom surface of the steel bar truss floor bearing plate 100 have holes, and the embodiment can realize the tight contact with the bottom surface of the steel bar truss floor bearing plate 100 through the arrangement of the square supporting pipes 4 with different sizes.
The working principle of the steel bar truss floor bearing plate supporting structure of the embodiment is as follows:
according to the design laying direction, aligning the datum line of the initial beam to install the steel bar truss floor bearing plate 100, strictly ensuring that the side edge of a template of the steel bar truss floor bearing plate 100 is superposed with the datum line, determining the gap distance between the end part of the template and the edge of the upper wing of the main structural steel beam 1 by a plate layout, and plugging the gap by a galvanized sheet; after the installation, the other end of the template is sequentially unfolded and installed; after a certain area is laid, the floor slab connecting ribs, the reinforcing ribs and the negative ribs are arranged according to design requirements, and the floor slab connecting ribs, the reinforcing ribs and the negative ribs are firmly tied with the steel bar truss floor bearing plate 100 in a binding connection mode in a double-screw and double-buckle mode so as to prevent the steel bar truss floor bearing plate 100 from being unstable laterally.
The mounting of the supporting structure can be carried out by adopting a folding herringbone ladder, three groups of supporting beam assemblies 2 can be uniformly erected along the long edge direction, the distance is about 1500mm, for each group of supporting beam assemblies 2, the steel beam connecting assembly 3 and the main structure steel beam 1 are firstly positioned and fixed, then the supporting beam assemblies 2 are mounted, the end truss beam I202 is taken as an example, the screw 304 is inserted into the fixed pipe 202-6, the screw 304 is rotated to be firmly connected with the fixed pipe 202-6, the end truss beam II 203 is similar, and the supporting beam assemblies 2 are initially erected and completed at the moment.
Then along the direction perpendicular with the extending direction of the supporting beam component 2, three groups of square supporting tubes 4 are arranged above the supporting beam component 2, and the distance between two adjacent groups of square supporting tubes 4 is about 1000 mm.
Finally, the screw 304 is rotated by a pistol drill, the screw 304 moves upwards, the supporting beam assembly 2 is pushed to move upwards, so that the tops of the square supporting tubes 4 are in close contact with the steel bar truss floor bearing plate 100, the bottoms of the square supporting tubes are adjusted to the designed elevation, the ends of the square supporting tubes 4 are tightly pressed with the lower wings of the main structure steel beams 1 through the wood beams, and the square supporting tubes 4 are firmly fixed.
It should be noted that, during the concrete construction, it is necessary to perform comprehensive inspection and check on each component, if the number, length, flatness, etc. of the components meet the requirements, the position of the main structural steel beam 1 is numbered during the hoisting, appropriate measures should be taken during the hoisting to prevent the excessive torsional deformation, after the inspection and check are completed, the hoisting of the supporting beam assembly 2 must be performed after the hoisting of the main structural steel beam 1 and the main structural steel column is completed and corrected, the steel bar truss floor support plate 100 is laid and reliably welded with the main structural steel beam 1, and it is ensured that the on-site welding quality grade meets the secondary welding seam quality requirement.
Example 2
The construction method of the steel structure cast-in-place floor slab, as shown in the flow of fig. 5, specifically comprises the following steps:
1. hoisting a steel member: the length, the section and the lateral bending of the main structure steel column and the elevation of the bracket surface are pre-checked, dirt on the surface of a component is cleaned, the front and back directions and the horizontal direction of the main structure steel column are required to be noticed before hoisting, and the mark is clearly marked to ensure correct installation; the main structure steel beams 1 are installed sequentially along with the main structure steel columns, and when the main structure steel beams 1 are installed, stable frames are required to be formed with the adjacent main structure steel beams 1 in time; when the main structure steel beam 1 is in place, the holes at two ends of the main structure steel beam 1 are aligned by using the impact nails firstly, then the main structure steel beam 1 is screwed by using the mounting bolts, and after the steel member is mounted and corrected, CO is adopted2And (5) gas shielded semi-automatic welding construction.
2. And hoisting and conveying the steel bar truss floor bearing plates 100 required by the three layers of floor slabs in the height of one section of column to the main structure steel beams 1 near the corresponding construction area according to the numbers, and laying the three layers of steel bar truss floor bearing plates 100 simultaneously after the three layers of steel bar truss floor bearing plates 100 are hoisted and conveyed.
3. The datum line of laying steel bar truss slab floor bearing plate 100 is emitted on main structure girder steel 1, first steel bar truss floor plate 100 is installed according to the datum line, and adjacent steel bar truss slab floor bearing plate 100 is installed in proper order, and the corresponding connection of adjacent steel bar truss slab floor bearing plate 100 longitudinal gap is inseparable, adopts the nonstandard board to terminate. The end part of the bottom template is closely connected with the upper wing of the main structure steel beam 1, and the edge banding strips are used for plugging the gap to ensure that the slurry does not leak when the concrete is poured; after the steel bar truss floor support plate 100 is laid, the support steel bars at the end parts of the support steel bars and the main structure steel beam 1 are firmly welded in a spot mode.
4. After the steel bar truss floor bearing plate 100 is laid and welded, the steel bar truss floor bearing plates 100 on all layers are supported, and concrete pouring can be simultaneously carried out.
5. The support of each layer of steel bar truss floor carrier plate 100 specifically includes: firstly, positioning and fixing a steel beam connecting assembly 3 and a main structure steel beam 1, then installing a supporting beam assembly 2, and then connecting the supporting beam assembly 2 and the steel beam connecting assembly 3; when the supporting beam component 2 and the steel beam connecting component 3 are connected, the screw 304 of the steel beam connecting component 3 is inserted into the fixed pipe of the supporting beam component 2, and then the screw 304 is rotated to be connected with the fixed pipe, and at the moment, the supporting beam component 2 is initially erected; then, a square supporting pipe 4 is arranged above the supporting beam assembly 2 along the direction vertical to the extending direction of the supporting beam assembly 2; finally, the screw 304 is rotated to move upwards, the support beam assembly 2 is pushed to move upwards, so that the top of the square support tube 4 is in close contact with the steel bar truss floor bearing plate 100, and the end of the square support tube 4 is tightly propped against the lower wing of the main structure steel beam 1 by a batten, so that the square support tube 4 is firmly fixed.
6. After the supporting structure is installed, a third floor slab is constructed, specifically, steel bar binding, pipeline laying, side formwork lifting treatment and reinforced concrete pouring are carried out; after the concrete of the third floor reaches a certain strength requirement, taking the third floor as a support for bearing an upper steel structure and construction load, and upwards carrying out installation and welding operation on the upper steel structure; when the upper steel structure operation is carried out, a first floor can be synchronously constructed downwards, and construction of a second floor is carried out after the construction of the first floor is finished.
The construction method of the embodiment includes the steps that concrete is poured on the third floor firstly, when the concrete of the third floor reaches the set strength, the third floor serves as a support for bearing an upper steel structure and construction loads, the upper steel structure is constructed upwards, and meanwhile the first floor and the second floor are constructed sequentially from bottom to top, so that the defect that construction speed is low due to the fact that construction is performed sequentially from bottom to top in the prior art is overcome.
It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (10)
1. Steel bar truss building carrier plate bearing structure, its characterized in that includes:
the main structure steel beam is in an I-shaped structure and is connected with the main structure steel column;
the supporting beam assembly consists of an end truss beam I, a middle truss beam and an end truss beam II which are sequentially spliced and used for supporting the steel bar truss floor bearing plate;
and the steel beam connecting assembly is arranged below the supporting beam assembly and used for detachably connecting the supporting beam assembly with the main structure steel beam.
2. The steel bar truss floor deck support structure according to claim 1, wherein the middle truss girder comprises a steel pipe I, a steel pipe II distributed in parallel, and a plurality of vertical connecting pipes I vertically connected between the steel pipe I and the steel pipe II;
the end truss girder I comprises a steel pipe III, a steel pipe IV, a plurality of vertical connecting pipes II and end connecting pipes, wherein the steel pipe III and the steel pipe IV are horizontally distributed, the vertical connecting pipes II are vertically connected between the steel pipe III and the steel pipe IV, the end connecting pipes are positioned at the ends of the steel pipe III and the steel pipe IV, and the end truss girder II has the same structure as the end truss girder I;
the inner diameters of the steel pipe I and the steel pipe II are larger than the outer diameters of the steel pipe III and the steel pipe IV or the outer diameters of the steel pipe I and the steel pipe II are smaller than the inner diameters of the steel pipe III and the steel pipe IV, so that the steel pipe I and the steel pipe II can be spliced.
3. The steel bar truss floor bearing plate supporting structure as claimed in claim 1, wherein a fixing pipe for connecting with a steel beam connecting assembly is arranged on the end truss girder I, and an internal thread is arranged in the fixing pipe; the end truss girder II has the same structure as the end truss girder I.
4. The steel bar truss floor deck support structure of claim 3, wherein the steel beam connection assemblies are provided in pairs to connect the end truss beams I and II, respectively, the steel beam connection assemblies comprising:
the device comprises a support plate I and a support plate II, wherein the support plate I and the support plate II are oppositely arranged, a support groove I is formed in the support plate I, and a support groove II is formed in the support plate II;
the nut is fixed between the support plate I and the support plate II;
the screw is in threaded connection with the nut and is connected with the fixed pipe;
the supporting structure comprises an ear plate I and an ear plate II, wherein the ear plate I is connected with a supporting plate I, the ear plate I is connected with the supporting plate II, the ear plate I and the ear plate II are both hook-shaped structures, the hook part of the ear plate I and the supporting groove I are arranged oppositely, and the hook part of the ear plate II and the supporting groove II are arranged oppositely to clamp the main structure steel beam.
5. The steel bar truss floor deck support structure of claim 4, wherein horizontal backing plates are fixed on the support grooves I and II, and extend out of the support plates I and II to press the main structure steel beam.
6. The steel bar truss floor deck support structure of claim 4, wherein the ear plate I is movably connected with the support plate I, and the ear plate II is movably connected with the support plate II so as to match with main structural steel beams with different sizes.
7. The steel bar truss floor bearing plate supporting structure as claimed in claim 6, wherein waist-shaped holes I are horizontally formed in the ear plates I, corresponding waist-shaped holes II are formed in the support plates I, adjusting bolts are arranged on the waist-shaped holes I and the waist-shaped holes II in a penetrating manner, and adjusting nuts are screwed on the adjusting bolts;
the connection structure of the ear plate II and the support plate II is the same as that of the ear plate I and the support plate I.
8. The steel bar truss floor bearing plate supporting structure as claimed in claim 1, wherein a plurality of square supporting tubes are further distributed between the supporting beam assembly and the steel bar truss floor bearing plate, the plurality of square supporting tubes are different in size, and the extending direction of the square supporting tubes is perpendicular to the extending direction of the supporting beam assembly.
9. The construction method of the steel structure cast-in-place floor is characterized in that when a three-layer floor with the height of one section of column of a steel structure building is constructed, a steel bar truss floor bearing plate required by each layer is laid firstly, and the steel bar truss floor bearing plate is supported by adopting a steel bar truss floor bearing plate supporting structure;
and then, firstly carrying out concrete pouring on the third floor, taking the third floor as a support for bearing an upper steel structure and construction load when the concrete of the third floor reaches a set strength, upwards carrying out construction of the upper steel structure, and simultaneously, sequentially carrying out construction on the first floor and the second floor from bottom to top.
10. The construction method of the steel structure cast-in-place floor slab as claimed in claim 9, wherein the supporting of the steel bar truss floor slab comprises the steps of:
firstly, positioning and fixing a steel beam connecting assembly and a main structure steel beam, then installing a supporting beam assembly, and then connecting the supporting beam assembly and the steel beam connecting assembly;
when the supporting beam assembly and the steel beam connecting assembly are connected, the screw of the steel beam connecting assembly is inserted into the fixed pipe of the supporting beam assembly, and then the screw is rotated to be connected with the fixed pipe, and at the moment, the supporting beam assembly is initially erected;
then, a square supporting pipe is arranged above the supporting beam component along the direction vertical to the extending direction of the supporting beam component;
and finally, rotating the screw to move upwards, pushing the supporting beam assembly to move upwards so as to enable the top of the square supporting tube to be in close contact with the steel bar truss floor bearing plate, and tightly supporting the end part of the square supporting tube and the lower wing of the main structure steel beam by using a batten to ensure that the square supporting tube is firmly fixed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114592633A (en) * | 2022-03-17 | 2022-06-07 | 中国十七冶集团有限公司 | European style truss integral structure system installation structure and European style truss system installation method |
| CN114673364A (en) * | 2022-03-17 | 2022-06-28 | 中国十七冶集团有限公司 | Method for installing pipeline by using hollow structure of European truss |
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| CN116556567A (en) * | 2023-07-05 | 2023-08-08 | 山东金城建设有限公司 | Design and construction method of large-span steel bar truss floor support plate deflection limiting system |
| CN116752680A (en) * | 2023-08-18 | 2023-09-15 | 山东同力建设项目管理有限公司 | Truss separated floor slab and construction method thereof |
| CN116752794A (en) * | 2023-06-30 | 2023-09-15 | 石河子大学 | Traditional village building protection device |
| CN115012578B (en) * | 2022-05-30 | 2024-05-31 | 中国十七冶集团有限公司 | Steel structure hollow truss grid unitized structure and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114592633A (en) * | 2022-03-17 | 2022-06-07 | 中国十七冶集团有限公司 | European style truss integral structure system installation structure and European style truss system installation method |
| CN114673364A (en) * | 2022-03-17 | 2022-06-28 | 中国十七冶集团有限公司 | Method for installing pipeline by using hollow structure of European truss |
| CN115012578A (en) * | 2022-05-30 | 2022-09-06 | 中国十七冶集团有限公司 | Steel structure open web truss grid unitized structure and construction method |
| CN115012578B (en) * | 2022-05-30 | 2024-05-31 | 中国十七冶集团有限公司 | Steel structure hollow truss grid unitized structure and construction method |
| CN116752794A (en) * | 2023-06-30 | 2023-09-15 | 石河子大学 | Traditional village building protection device |
| CN116556567A (en) * | 2023-07-05 | 2023-08-08 | 山东金城建设有限公司 | Design and construction method of large-span steel bar truss floor support plate deflection limiting system |
| CN116556567B (en) * | 2023-07-05 | 2023-09-29 | 山东金城建设有限公司 | Design and construction method of large-span steel bar truss floor support plate deflection limiting system |
| CN116752680A (en) * | 2023-08-18 | 2023-09-15 | 山东同力建设项目管理有限公司 | Truss separated floor slab and construction method thereof |
| CN116752680B (en) * | 2023-08-18 | 2023-11-10 | 山东同力建设项目管理有限公司 | Truss separated floor slab and construction method thereof |
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