CN110821159A - Steel-structure large-span adjustable floor support plate supporting structure and construction method thereof - Google Patents
Steel-structure large-span adjustable floor support plate supporting structure and construction method thereof Download PDFInfo
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- CN110821159A CN110821159A CN201911178856.7A CN201911178856A CN110821159A CN 110821159 A CN110821159 A CN 110821159A CN 201911178856 A CN201911178856 A CN 201911178856A CN 110821159 A CN110821159 A CN 110821159A
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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
- 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
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
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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
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
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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
- E04G2011/505—Girders, beams, or the like as supporting members for forms with nailable or screwable inserts
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention belongs to the field of floor bearing plate supporting, and particularly relates to a steel structure large-span adjustable floor bearing plate supporting structure and a construction method thereof. The steel bar truss floor support plate system has the advantages of simple structure, convenience in use, safety, firmness and reliability, capability of being recycled, convenience in disassembly, capability of shortening the construction period, capability of simultaneously constructing multiple layers, suitability for supporting any steel bar truss floor support plate system, capability of generating considerable economic benefit and achieving the purposes of reducing cost and accelerating construction progress.
Description
Technical Field
The invention relates to the technical field of floor support plate supporting, in particular to a steel structure large-span adjustable floor support plate supporting structure and a construction method thereof.
Background
With the continuous development of buildings and the rapid development of the technology of the building industry, the assembly type building industry gradually comes into the sight of people, and the construction method of the floor slab also shows the development of various types. The assembled steel bar truss floor support plate is a new product which is environment-friendly, simple and convenient to install, short in construction period, easy to control quality and high in modernization degree, can meet the assembly standard of an assembled building, can meet the quality requirements of floor engineering and steel bar engineering construction, and is good in floor flatness and high in construction efficiency. For the midspan part with larger span or strict deflection requirement, temporary support can be set by calculation according to the design requirement. The temporary supports at two ends and the middle of the prior construction steel bar truss are arranged at the bottom of the plate by using support square timbers or steel pipes to be arranged below the connecting fasteners as supports, the erection is random, the turnover utilization is low, the material waste is large, the construction and installation are complex, the erection is not standard, the appearance cannot meet the requirements, the economic benefit is poor and the like, so that the requirements of the assembly type building construction cannot be met far.
Disclosure of Invention
The invention aims to solve the defects that in the prior art, temporary supports are arranged at two ends and the middle of a steel bar truss in the prior art, supporting square timbers or steel pipes are arranged at the bottom of a plate to be used as supports below a connecting fastener, the plate is randomly erected and has low turnover utilization, large material waste, complex construction and installation, irregular erection, unqualified appearance, poor economic benefit and the like, which can not meet the requirements of assembly type building construction, and provides a steel structure large-span adjustable floor bearing plate supporting structure and a construction method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a building carrier plate bearing structure with adjustable steel construction large-span, includes major structure steel column, major structure girder steel, steel bar truss building carrier plate back beam subassembly and U type hexagon bolt subassembly, two connecting plates of major structure steel column outside fixedly connected with, major structure girder steel and connecting plate fixed connection, steel bar truss building carrier plate weld mutually with the major structure girder steel, and steel bar truss building carrier plate supports on steel bar truss building carrier plate back beam subassembly, and steel bar truss building carrier plate back beam subassembly passes through U type hexagon bolt subassembly and major structure girder steel fixed connection, has seted up high strength bolt connecting hole on the steel bar truss building carrier plate back beam subassembly, and U type hexagon bolt subassembly threaded connection is in high strength bolt connecting hole.
Preferably, a steel bar truss floor carrier plate supporting beam subassembly includes vertical iron plate, horizontal plate, turns to iron plate and I-steel roof beam.
Preferably, the U-shaped hexagon bolt assembly comprises an M16 hexagon bolt, a bolt gasket and a connecting iron sheet.
Preferably, the thickness of the connecting iron sheet is more than or equal to 5 mm.
Preferably, the number of the main structure steel beams on the same main structure steel column is four.
Preferably, the number of M16 hexagon bolts on the same connecting iron sheet is two.
Preferably, both ends of the i-shaped steel beam are cut into convex shapes.
A construction method of a steel structure large-span adjustable floor bearing plate supporting structure comprises the following steps:
s1: blanking: preparing an M16 hexagon bolt and an I-shaped steel beam according to specified sizes, cutting two end parts of the I-shaped steel beam into convex shapes by adopting a numerical control cutting machine, blanking and cutting a steel plate by adopting the numerical control cutting machine, wherein the thickness of the steel plate is more than or equal to 5mm, processing the steel plate into a steering iron plate, a horizontal plate, a vertical iron plate and a connecting plate, and forming grooves on the steering iron plate, the horizontal plate and the vertical iron plate;
s2: manufacturing a convex supporting I-shaped steel beam: welding a steering iron plate, a horizontal plate, a vertical iron plate and specified positions at two ends of a well cut convex I-steel to form a steel bar truss floor bearing plate supporting beam assembly, drilling the processed steel bar truss floor bearing plate supporting beam assembly by using a three-dimensional numerical control drilling machine to form a high-strength bolt connecting hole, performing sand blasting rust removal treatment on the steel bar truss floor bearing plate supporting beam assembly, wherein the rust removal grade is Sa2.5, and performing paint coating rust prevention;
s3: manufacturing a U-shaped hexagon bolt assembly: welding two M16 hexagon bolt screws with a connecting plate according to the specified distance and size to form a U-shaped hexagon bolt assembly;
s4: u type hexagon bolt subassembly is connected with convex supporting I-shaped steel roof beam: screwing a nut at the lower end of the U-shaped hexagon bolt assembly into the bottom of the M16 hexagon bolt by using a wrench, placing a bolt gasket at the lower end, freely penetrating the U-shaped hexagon bolt assembly into the hole without forcibly striking and gas cutting and reaming, placing a bolt gasket at the upper end into the M16 hexagon bolt, screwing a nut at the upper end into the M16 hexagon bolt by using the wrench, not screwing, and keeping an adjustable distance;
s5: hoisting on site: the method comprises the following steps of comprehensively checking and checking components before installation, judging whether the quantity, the length, the flatness and the like of the components meet requirements or not, numbering the positions of steel beams during hoisting, taking proper measures during hoisting to prevent overlarge torsional deformation, after checking and checking, hoisting a steel bar truss floor support plate support beam assembly only after completing the hoisting and correcting of a main structure steel beam and a main structure steel column structure component, hoisting and installing according to the numbered positions during hoisting, temporarily welding and fixing a connecting iron sheet and the upper end of the lower flange of the inner side of the main structure steel beam, welding the connecting iron sheet and the upper end of the lower flange of the main structure steel beam after loosening a lifting rope, and ensuring that the quality grade of field welding meets the quality requirement of a secondary welding seam;
s6: installing a steel bar truss floor bearing plate: the method comprises the following steps that a steel bar truss floor bearing plate is arranged in an alignment mode with a reference line of an initial beam according to a designed laying direction, a first steel bar truss floor bearing plate is arranged in an alignment mode, the side reference line of a template of the first steel bar truss floor bearing plate is strictly guaranteed to be coincident, the gap distance between the end part of the template and the flange of a steel beam is determined by a plate arrangement diagram, gaps are sealed and processed by galvanized sheets, after the first plate is arranged, other adjacent templates are sequentially unfolded and arranged towards the other end, after a certain area is laid, floor slab connecting ribs, reinforcing ribs and negative ribs are required to be arranged according to design requirements, binding connection is adopted, and the floor slab connecting ribs, the reinforcing ribs and the steel bar;
s7: leveling: checking the levelness of the steel bar truss floor bearing plate, adjusting nuts at the lower ends of M16 hexagon bolts by using a wrench, and adjusting M16 hexagon bolts at two sides simultaneously to enable a support beam assembly of the steel bar truss floor bearing plate to move up and down so as to ensure that the flatness deviation of the steel bar truss floor bearing plate is within a standard allowable range;
s8: concrete pouring of the steel bar truss floor slab: the steel beam or upright stanchion is required to be inclined at the part opposite to the support of the steel beam or upright stanchion and is required to be quickly spread to the periphery, so that the stacking is prevented from being too high;
s9: dismantling a support beam assembly of a steel bar truss floor support plate: firstly, a steel bar truss floor support plate support beam assembly is temporarily fixed by a triangular support frame, a nut at the lower end of an M16 hexagon bolt of a U-shaped hexagon bolt assembly is unscrewed, a grinder is used for dismounting the root of the M16 hexagon bolt and the joint of a connecting iron sheet, and in the process of removing a mold, the steel bar truss floor support plate support beam assembly is dismounted and then needs to be collected and arranged, maintained in time and prepared for recycling.
In the invention, 1, the system has simple materials and few processing procedures, utilizes the original main structure to bear force, and is energy-saving and environment-friendly;
2. the construction can be carried out along with the main structure, the connectivity is good, the safety and reliability are high, the repeated utilization is realized, the repeated processing is not needed, and the loss is less;
3. the support does not need to be supported on the ground, the support integrity is good, the problem that multiple layers cannot be constructed simultaneously is solved, the construction efficiency is improved, and the engineering cost is reduced;
4. the construction steps are simplified, the structure is simple, the types are few, the processing and welding amount is greatly less, the processing and the manufacturing are convenient, and the component quality is easy to ensure;
5. the system is very suitable for multi-story and high-rise assembled steel structure buildings;
6. the device can be flexibly arranged, has high practicability and good integrity, can effectively reduce material loss, and increases the stability of the system.
The steel bar truss floor support plate system has the advantages of simple structure, convenience in use, safety, firmness and reliability, capability of being recycled, convenience in disassembly, capability of shortening the construction period, capability of simultaneously constructing multiple layers, suitability for supporting any steel bar truss floor support plate system, capability of generating considerable economic benefit and achieving the purposes of reducing cost and accelerating construction progress.
Drawings
Fig. 1 is a schematic plan view of a steel-structure large-span adjustable floor deck support structure according to the present invention;
FIG. 2 is an axial front view of a steel-structured large-span adjustable floor deck support structure according to the present invention;
FIG. 3 is a side perspective view of a steel structure large-span adjustable floor deck support structure according to the present invention;
FIG. 4 is an axial side view of a steel bar truss floor deck support beam assembly of the steel structure large-span adjustable floor deck support structure of the present invention;
FIG. 5 is a bottom elevation view of a steel truss floor deck support beam assembly of the steel structure large-span adjustable floor deck support structure of the present invention;
FIG. 6 is a side view of a steel truss floor deck support beam assembly of the steel structure large-span adjustable floor deck support structure of the present invention;
fig. 7 is a front view of a steel bar truss floor deck support beam assembly of the steel structure large-span adjustable floor deck support structure provided by the invention;
FIG. 8 is a partial front view of a steel truss floor deck support beam assembly of a steel structure large-span adjustable floor deck support structure according to the present invention;
FIG. 9 is a schematic view of portion A-A of FIG. 7;
fig. 10 is an axial elevation view of a steel bar truss floor support plate support beam assembly and a U-shaped hexagon bolt assembly of the steel structure large-span adjustable floor support plate support structure according to the present invention;
fig. 11 is a schematic view of a U-shaped hexagon bolt assembly of a steel structure large-span adjustable floor deck support structure according to the present invention.
In the figure: 1. a major structural steel column; 2. a main structure steel beam; 3. a connecting plate; 4. a steel bar truss floor support plate; 5. a steel bar truss floor support plate supporting beam assembly; 6. a U-shaped hexagon bolt assembly; 7. connecting holes of high-strength bolts; 8. a vertical iron plate; 9. a horizontal plate; 10. a steering iron plate; 11. an I-beam; 12. m16 hex bolts; 13. a bolt washer; 14. and connecting iron sheets.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-11, a building carrier plate bearing structure with adjustable steel construction large-span includes major structure steel column 1, major structure girder steel 2, steel bar truss building carrier plate 4, steel bar truss building carrier plate supporting beam subassembly 5 and U type hexagon bolt subassembly 6, two connecting plates 3 of 1 outside fixedly connected with of major structure steel column, major structure girder steel 2 and connecting plate 3 fixed connection, steel bar truss building carrier plate 4 welds with major structure girder steel 2 mutually, steel bar truss building carrier plate 4 supports on steel bar truss building carrier plate supporting beam subassembly 5, steel bar truss building carrier plate supporting beam subassembly 5 passes through U type hexagon bolt subassembly 6 and major structure girder steel 2 fixed connection, high strength bolt connecting hole 7 has been seted up on steel bar truss building carrier plate supporting beam subassembly 5, 6 threaded connection of U type hexagon bolt subassembly is in high strength bolt connecting hole 7.
In this embodiment, steel bar truss floor carrier plate supporting beam assembly 5 includes vertical iron plate 8, horizontal plate 9, turns to iron plate 10 and I-steel roof beam 11.
In this embodiment, the U-shaped hexagon bolt assembly 7 includes an M16 hexagon bolt 12, a bolt washer 13, and a connection iron piece 14.
In this embodiment, the thickness of the connecting iron sheet 14 is greater than or equal to 5 mm.
In this embodiment, the number of the main structure steel beams 2 on the same main structure steel column 1 is four.
In this embodiment, the number of M16 hexagon bolts 12 on the same connecting iron piece 14 is two.
In this embodiment, both ends of the i-beam 11 are cut into convex shapes.
A construction method of a steel structure large-span adjustable floor bearing plate supporting structure comprises the following steps:
s1: blanking: preparing an M16 hexagon bolt 12 and an I-shaped steel beam 11 according to specified sizes, cutting two end parts of the I-shaped steel beam 11 into convex shapes by adopting a numerical control cutting machine, blanking and cutting a steel plate by adopting the numerical control cutting machine, wherein the thickness of the steel plate is more than or equal to 5mm, processing the steel plate into a steering iron plate 10, a horizontal plate 9, a vertical iron plate 8 and a connecting plate 3, and forming grooves on the steering iron plate 10, the horizontal plate 9 and the vertical iron plate 8;
s2: manufacturing a convex supporting I-shaped steel beam 11: welding a steering iron plate 10, a horizontal plate 9, a vertical iron plate 8 and specified positions at two ends of a well-cut convex I-steel to form a steel bar truss floor bearing plate supporting beam assembly 5, drilling the processed steel bar truss floor bearing plate supporting beam assembly 5 by using a three-dimensional numerical control drilling machine to form a high-strength bolt connecting hole 7, performing sand blasting rust removal treatment on the steel bar truss floor bearing plate supporting beam assembly 5, wherein the rust removal grade is Sa2.5, and performing paint coating rust prevention;
s3: manufacturing a U-shaped hexagon bolt assembly 6: welding two screws 12 of the M16 hexagon bolt with the connecting plate 3 according to the specified distance and size to form a U-shaped hexagon bolt assembly 6;
s4: u type hex bolts subassembly 6 is connected with convex support I-shaped girder steel 11: screwing a nut at the lower end of the U-shaped hexagon bolt assembly 6 into the bottom of the M16 hexagon bolt 12 by using a wrench, placing a bolt gasket 13 at the lower end, freely penetrating the U-shaped hexagon bolt assembly 6 into a hole without forcibly knocking and reaming by gas cutting, placing the bolt gasket 13 at the upper end into the M16 hexagon bolt 12, screwing a nut at the upper end into the M16 hexagon bolt 12 by using a wrench, not screwing, and keeping an adjustable distance;
s5: hoisting on site: the method comprises the following steps of comprehensively checking and checking components before installation, if the quantity, the length, the flatness and the like of the components meet requirements, numbering the steel beam positions during hoisting, taking appropriate measures during hoisting to prevent overlarge torsional deformation, hoisting the steel bar truss floor support plate supporting beam assembly 5 after the hoisting of a main structure steel beam 2 and a main structure steel column 1 structural component is completed and corrected after checking and checking are completed, hoisting and installing the components according to the numbered positions during hoisting, temporarily welding and fixing a connecting iron sheet 14 with the upper end of a lower flange on the inner side of the main structure steel beam 2, and welding the connecting iron sheet 14 with the upper end of the lower flange of the main structure steel beam 2 after a hoisting rope is loosened, so that the on-site welding quality grade meets the quality requirement of a secondary welding seam;
s6: 4 installation of steel bar truss floor carrier plate: the steel bar truss floor bearing plate 4 is arranged by aligning the reference line of the initial beam according to the designed laying direction, the first steel bar truss floor bearing plate 4 is arranged by strictly ensuring that the side reference lines of the template of the first steel bar truss floor bearing plate 4 are superposed, the gap distance between the end part of the template and the flange of the steel beam is determined by a plate arrangement diagram, the gap is sealed by a galvanized sheet, after the first plate is arranged, the other adjacent templates are sequentially unfolded and arranged towards the other end, after a certain area is laid, a floor slab connecting rib, a reinforcing rib and a negative rib are required to be arranged according to the design requirement, binding connection is adopted, and the floor slab connecting rib and the negative rib are firmly bound with the steel bar truss in a double-thread and;
s7: leveling: checking the levelness of the steel bar truss floor bearing plate 4, adjusting nuts at the lower ends of the M16 hexagon bolts 12 by using a wrench, and adjusting the M16 hexagon bolts 12 at two sides simultaneously to enable the support beam assembly 5 of the steel bar truss floor bearing plate to move up and down so as to ensure that the flatness deviation of the steel bar truss floor bearing plate 4 is within a standard allowable range;
s8: pouring concrete for the steel bar truss floor bearing plate 4: the steel beam or upright stanchion is required to be inclined at the part opposite to the support of the steel beam or upright stanchion and is required to be quickly spread to the periphery, so that the stacking is prevented from being too high;
s9: dismantling a steel bar truss floor support plate support beam assembly 5: firstly, the steel bar truss floor support plate support beam assembly 5 is temporarily fixed by adopting a triangular support frame, a nut at the lower end of an M16 hexagon bolt 12 of a U-shaped hexagon bolt assembly 6 is unscrewed, a grinder is used for dismantling the joint of the root part of the M16 hexagon bolt 12 and a connecting iron sheet 14, and in the form dismantling process, the steel bar truss floor support plate support beam assembly 5 is collected and arranged after being dismantled, and is maintained in time and prepared for recycling.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A steel structure large-span adjustable floor bearing plate supporting structure comprises a main structure steel column (1), a main structure steel beam (2), a steel bar truss floor bearing plate (4), a steel bar truss floor bearing plate supporting beam assembly (5) and a U-shaped hexagon bolt assembly (6), and is characterized in that two connecting plates (3) are fixedly connected to the outer side of the main structure steel column (1), the main structure steel beam (2) is fixedly connected with the connecting plates (3), the steel bar truss floor bearing plate (4) is welded with the main structure steel beam (2), the steel bar truss floor bearing plate (4) is supported on the steel bar truss floor bearing plate supporting beam assembly (5), the steel bar truss floor bearing plate supporting beam assembly (5) is fixedly connected with the main structure steel beam (2) through the U-shaped hexagon bolt assembly (6), and a high-strength bolt connecting hole (7) is formed in the steel bar truss floor bearing plate supporting beam assembly (5), the U-shaped hexagon bolt assembly (6) is in threaded connection with the high-strength bolt connecting hole (7).
2. The steel structure large-span adjustable floor deck supporting structure according to claim 1, wherein the steel bar truss floor deck supporting beam assembly (5) comprises a vertical iron plate (8), a horizontal plate (9), a steering iron plate (10) and an I-shaped steel beam (11).
3. The steel structure large-span adjustable floor deck support structure according to claim 1, wherein the U-shaped hexagon bolt assembly (7) comprises M16 hexagon bolts (12), bolt washers (13) and connecting iron sheets (14).
4. The steel structure large-span adjustable floor deck support structure according to claim 3, wherein the thickness of the connecting iron sheet (14) is greater than or equal to 5 mm.
5. The steel structure large-span adjustable floor deck support structure according to claim 1, wherein the number of the main structure steel beams (2) on the same main structure steel column (1) is four.
6. The steel structure large-span adjustable floor deck support structure according to claim 3, wherein the number of M16 hex bolts (12) on the same connecting iron sheet (14) is two.
7. The steel structure large-span adjustable floor deck support structure according to claim 2, wherein both ends of the i-shaped steel beam (11) are cut in a convex shape.
8. A construction method of a steel structure large-span adjustable floor bearing plate supporting structure is characterized by comprising the following steps:
s1: blanking: preparing an M16 hexagon bolt (12) and an I-shaped steel beam (11) according to specified sizes, cutting two end parts of the I-shaped steel beam (11) into convex shapes by adopting a numerical control cutting machine, blanking and cutting a steel plate by adopting the numerical control cutting machine, wherein the thickness of the steel plate is more than or equal to 5mm, processing the steel plate into a steering iron plate (10), a horizontal plate (9), a vertical iron plate (8) and a connecting plate (3), and forming grooves on the steering iron plate (10), the horizontal plate (9) and the vertical iron plate (8) mutually;
s2: manufacturing a convex supporting I-shaped steel beam (11): welding a steering iron plate (10), a horizontal plate (9), a vertical iron plate (8) and specified positions at two ends of a cut convex I-steel to form a steel bar truss floor bearing plate supporting beam assembly (5), drilling the processed steel bar truss floor bearing plate supporting beam assembly (5) by using a three-dimensional numerical control drilling machine to form a high-strength bolt connecting hole (7), performing sand blasting rust removal treatment on the steel bar truss floor bearing plate supporting beam assembly (5), wherein the rust removal grade is Sa2.5, and performing paint coating rust prevention;
s3: manufacturing a U-shaped hexagon bolt assembly (6): welding two screws of the M16 hexagon bolts (12) with the connecting plate (3) according to the specified distance and size to form a U-shaped hexagon bolt assembly (6);
s4: u type hexagon bolt subassembly (6) is connected with convex support I-shaped steel roof beam (11): screwing a nut at the lower end of the U-shaped hexagon bolt assembly (6) into the bottom of the M16 hexagon bolt (12) by using a wrench, putting a bolt gasket (13) at the lower end, freely penetrating the U-shaped hexagon bolt assembly (6) into a hole without forcibly knocking and expanding the hole without gas cutting, putting the bolt gasket (13) at the upper end into the M16 hexagon bolt (12), screwing a nut at the upper end into the M16 hexagon bolt (12) by using the wrench, and keeping an adjustable distance without screwing;
s5: hoisting on site: the method comprises the following steps of comprehensively checking and checking components before installation, if the quantity, the length, the flatness and the like of the components meet requirements, numbering the positions of steel beams during hoisting, taking appropriate measures during hoisting to prevent overlarge torsional deformation, hoisting a steel bar truss floor support plate supporting beam assembly (5) after the hoisting of a main structure steel beam (2) and a main structure steel column (1) structure component is completed and corrected after checking and checking are completed, hoisting and installing the components according to the numbered positions during hoisting, temporarily welding and fixing a connecting iron sheet (14) and the upper end of the lower flange of the inner side of the main structure steel beam (2), welding the connecting iron sheet (14) and the upper end of the lower flange of the main structure steel beam (2) after a hoisting rope is loosened, and ensuring that the on-site welding quality grade meets the quality requirement of a secondary welding seam;
s6: installing a steel bar truss floor bearing plate (4): the steel bar truss floor bearing plate (4) is arranged by aligning to a datum line of an initial beam according to a designed laying direction, a first steel bar truss floor bearing plate (4) is arranged by strictly ensuring that side datum lines of templates of the first steel bar truss floor bearing plate (4) coincide, the gap distance between the end part of a template and a flange of a steel beam is determined by a plate arrangement diagram, a galvanized sheet is adopted for plugging gaps, after the first template is arranged, the other adjacent templates are sequentially unfolded and arranged towards the other end, after a certain area is laid, a floor slab connecting rib, a reinforcing rib and a negative rib are required to be arranged according to the design requirement, binding connection is adopted, the floor slab connecting rib and the negative rib are firmly bound with a steel bar truss in a double-wire double-buckling;
s7: leveling: checking the levelness of the steel bar truss floor bearing plate (4), adjusting nuts at the lower ends of M16 hexagon bolts (12) by using a wrench, and adjusting M16 hexagon bolts (12) at two sides simultaneously to enable a support beam assembly (5) of the steel bar truss floor bearing plate to move up and down so as to ensure that the flatness deviation of the steel bar truss floor bearing plate (4) is within a standard allowable range;
s8: pouring concrete on the steel bar truss floor bearing plate (4): the steel beam or upright stanchion is required to be inclined at the part opposite to the support of the steel beam or upright stanchion and is required to be quickly spread to the periphery, so that the stacking is prevented from being too high;
s9: dismantling a steel bar truss floor support plate supporting beam assembly (5): adopt triangular supports frame temporary fixation earlier steel bar truss building carrier plate back beam subassembly (5), unscrew M16 hex bolts (12) lower extreme nut of U type hex bolts subassembly (6), use abrasive machine again to demolish M16 hex bolts (12) root and connection iron sheet (14) junction, at the form removal in-process, steel bar truss building carrier plate back beam subassembly (5) are demolishd the back and should be collected the arrangement to in time maintain, prepare reuse.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111441572A (en) * | 2020-05-09 | 2020-07-24 | 唐山冀东发展燕东建设有限公司 | Inverted supporting system of floor support plate |
| CN113653239A (en) * | 2021-09-24 | 2021-11-16 | 广东永和建设集团有限公司 | Construction method of self-supporting steel bar truss template system |
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| CN113653239A (en) * | 2021-09-24 | 2021-11-16 | 广东永和建设集团有限公司 | Construction method of self-supporting steel bar truss template system |
| CN117052163A (en) * | 2023-08-01 | 2023-11-14 | 上海宝冶集团有限公司 | Method for fixing bracket at upper part of through-length door and window at position vertical to steel structure steel beam |
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