CN111559001A - Manufacturing method of light sandwich concrete angle steel truss girder - Google Patents
Manufacturing method of light sandwich concrete angle steel truss girder Download PDFInfo
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- CN111559001A CN111559001A CN201910117911.5A CN201910117911A CN111559001A CN 111559001 A CN111559001 A CN 111559001A CN 201910117911 A CN201910117911 A CN 201910117911A CN 111559001 A CN111559001 A CN 111559001A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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Abstract
The invention discloses a method for manufacturing a light sandwich concrete angle steel truss girder, belongs to the technical field of concrete construction, and solves the problems that the prefabricated strength of the light sandwich concrete angle steel truss girder manufactured by the existing method for prefabricating the light sandwich concrete angle steel truss girder is low, and the service life of the light sandwich concrete angle steel truss girder is influenced; the technical characteristics are as follows: the method comprises the following steps: manufacturing angle steel truss beam angle through-length angle steel, selecting according to the structural requirement and the size requirement of an angle steel gusset plate, and marking, cutting and blanking, polishing and grinding rough edges of the selected angle steel along the length direction of the angle steel when manufacturing the beam angle steel; the light sandwich concrete angle steel truss girder manufactured by the invention is simple to build, is beneficial to popularization and use, prolongs the service life of a building while ensuring the safety of the structure and the building, can be produced in a factory and then transported to a site for assembly, and is very suitable for an assembly type building.
Description
Technical Field
The invention relates to the technical field of concrete construction, in particular to a method for manufacturing a light sandwich concrete angle steel truss girder.
Background
The concrete structure engineering is a member or structure with various shapes and sizes formed by pouring two materials of reinforcing steel bars and concrete by utilizing a template according to design requirements, the concrete is a mixture formed by mixing cementing materials, aggregate, water, admixture and admixture according to a certain proportion, and the artificial stone is formed after hardening, the compression resistance of the concrete is large, but the tensile resistance is very low, and the fracture phenomenon is easy to generate when the concrete is pulled. Such reinforced concrete is called reinforced concrete.
With the continuous improvement of the technology, the concrete is also developed towards the direction of energy conservation and environmental protection, the light sandwich concrete has the advantages of low cost and high strength, and is widely applied in the building construction process, when the light sandwich concrete is used for construction, the light sandwich concrete angle steel truss girder needs to be prefabricated, the prefabricated strength of the light sandwich concrete angle steel truss girder manufactured by the existing light sandwich concrete angle steel truss girder prefabricating method is low, and the service life of the light sandwich concrete angle steel truss girder prefabricating is influenced, so that the light sandwich concrete angle steel truss girder manufacturing method is provided.
Disclosure of Invention
The invention aims to provide a method for manufacturing a light sandwich concrete angle steel truss girder, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a manufacturing method of a light sandwich concrete angle steel truss girder comprises the following steps:
s1, manufacturing an angle steel truss girder angle through-length angle steel, marking the selected angle steel along the length direction of the angle steel when manufacturing the girder angle steel, cutting and blanking, polishing and grinding burrs, and finally welding position lines of a straight web member angle steel and an inclined web member angle steel at the web member connecting node position of the girder angle through-length angle steel, wherein the material of the girder angle through-length angle steel is the same as that of the web member angle steel, the thickness of the girder angle through-length angle steel is more than 4mm, and the through-length angle steel can be a finished product or can be formed by welding steel plates;
s2, when manufacturing straight web member angle steel and inclined web member angle steel, firstly marking selected straight web member angle steel and inclined web member angle steel materials along the length direction of the angle steel by using a pencil, cutting and blanking, polishing burrs and grinding, and finally marking angle steel welding position lines on the beam corner full-length angle steel, the straight web member angle steel and the inclined web member angle steel to manufacture angle steel truss beam straight web member angle steel and inclined web member angle steel, wherein the straight web member angle steel and the inclined web member angle steel are the same in material;
s3, performing assembly welding on parts, drawing the position lines of the connecting nodes of the angle steel web member angle steel of the beam surface on a preset assembly welding steel platform by using a pen according to the proportion of 1:1, then placing beam corner main angle steel, straight web member angle steel and diagonal web member angle steel on the corresponding position lines of the connecting nodes of the beam corner through long angle steel straight web member angle steel and diagonal web member angle steel, checking the size by using a measuring tool, and then welding;
s4, welding hoisting internal thread sleeves at the hoisting points and the pairing positions of the light sandwich concrete angle steel truss girder, installing two hoisting internal thread sleeves on each surface of each end, wherein each end is 8, the two ends are 16 in total, cleaning welding slag, screwing hoisting bolts into the embedded sleeves after repair welding inspection, and wrapping adhesive tapes for protection treatment;
s5, horizontally placing the angle steel framework of the manufactured lightweight sandwich concrete angle steel truss girder into a prepared lightweight concrete pouring mold in advance, fixing, pouring lightweight concrete, vibrating by using a vibrating rod with the diameter of 60mm while pouring until the height reaches the required height, standing, and pushing into a concrete steam curing box for curing;
s6, horizontally placing the steamed and cured lightweight sandwich concrete angle steel truss girder into a fireproof protection layer spraying frame mold after demolding and fixing, then spraying a fireproof protection layer on the exterior of the lightweight sandwich concrete angle steel truss girder, wherein the thickness of the fireproof protection layer is 50mm, the protection layer is thickened environment-friendly non-combustible cement fireproof paint, when the fireproof protection layer is manufactured, the thickness of the fireproof protection layer is less than 10mm, the number of the fireproof protection layers is 5, after the fireproof protection layer is manufactured, the fireproof protection layer is compacted, flattened and polished, and after each fireproof protection layer is dried for more than 8 hours, the next layer is sprayed;
s7, finally, placing the light sandwich concrete angle steel truss girder coated with the fireproof protection layer into a prepared girder face spraying coating layer framework mould and fixing, then spraying the outermost layer girder face coating layer, wherein the thickness of the girder face coating layer is 10mm, the coating layer adopts an environment-friendly non-combustible cement-based concrete reinforcing agent, the girder face coating layer can be constructed in two layers, the thickness of each layer of girder face coating layer is not more than 5mm, each layer of girder face coating layer is compacted, pressed, leveled and polished after the production is finished, and each layer of girder face coating layer is dried after the interval of more than 8 hours;
s8, after the beam face wrapping layer die is removed, the beam face and the beam angle of the light sandwich concrete angle steel truss beam are checked, the defects are repaired, and the perfectness of the hoisting holes and the exposed angle steel is checked.
As a further scheme of the invention: in step S4, the diameter of the hoisting bolt is 18mm, and the length of the hoisting bolt is 100 mm.
As a still further scheme of the invention: in step S5, the diameter of the vibrating rod is 60 mm.
Compared with the prior art, the invention has the beneficial effects that: the light sandwich concrete angle steel truss girder manufactured by the invention has the advantages of high strength, strong practicability, low cost, simple construction and contribution to popularization and use.
Detailed Description
The technical solutions of the present invention will be described in further detail with reference to specific embodiments, and it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.
Example 1
A manufacturing method of a light sandwich concrete angle steel truss girder comprises the following steps:
s1, manufacturing an angle steel truss beam angle through-length angle steel, selecting according to structural requirements and angle steel gusset plate size requirements, marking, cutting and blanking the selected angle steel along the length direction of the angle steel when manufacturing the beam angle steel, polishing and grinding burrs, and finally using a stone line to weld position lines of a straight web member angle steel and a diagonal web member angle steel at the web member connecting node position of the beam angle through-length angle steel, wherein the material of the beam angle through-length angle steel is the same as that of the web member angle steel, the thickness of the beam angle through-length angle steel is 5mm, and the through-length angle steel can be a finished product or can be formed by welding steel plates;
s2, when manufacturing straight web member angle steel and inclined web member angle steel, firstly marking selected straight web member angle steel and inclined web member angle steel materials along the length direction of the angle steel by using a pencil, cutting and blanking, polishing burrs and grinding, and finally marking angle steel welding position lines on the beam corner full-length angle steel, the straight web member angle steel and the inclined web member angle steel to manufacture angle steel truss beam straight web member angle steel and inclined web member angle steel, wherein the straight web member angle steel and the inclined web member angle steel are the same in material;
s3, performing assembly welding on parts, drawing the position lines of the connecting nodes of the angle steel web member angle steel of the beam surface on a preset assembly welding steel platform by using a pen according to the proportion of 1:1, then placing beam corner main angle steel, straight web member angle steel and diagonal web member angle steel on the corresponding position lines of the connecting nodes of the beam corner through long angle steel straight web member angle steel and diagonal web member angle steel, checking the size by using a measuring tool, and then welding;
s4, welding hoisting internal thread sleeves at the hoisting points and the assembling positions of the light sandwich concrete angle steel truss girder, wherein the diameter of each hoisting internal thread sleeve is 18mm, the length of each hoisting internal thread sleeve is 100mm, the hoisting internal thread sleeves are assembled and installed, each surface of each end is provided with two hoisting internal thread sleeves, each end is provided with 8 ends, the two ends are 16 in total, welding slag is cleaned, and after repair welding inspection, hoisting bolts are screwed into the embedded sleeves and adhesive tape is wrapped for protection treatment;
s5, horizontally placing the angle steel framework of the manufactured lightweight sandwich concrete angle steel truss girder into a prepared lightweight concrete pouring mold in advance, fixing, pouring lightweight concrete, vibrating by using a vibrating rod with the diameter of 60mm while pouring until the height reaches the required height, standing, and pushing into a concrete steam curing box for curing;
s6, horizontally placing the steamed and cured lightweight sandwich concrete angle steel truss girder into a fireproof protection layer spraying frame mold after demolding and fixing, then spraying a fireproof protection layer on the exterior of the lightweight sandwich concrete angle steel truss girder, wherein the thickness of the fireproof protection layer is 45mm, the protection layer is environment-friendly non-combustible cement fireproof paint, when the fireproof protection layer is manufactured, the thickness of the fireproof protection layer is 9mm, the number of layers of the fireproof protection layer is 5, after the fireproof protection layer is manufactured, the fireproof protection layer is compacted, flattened and polished, and after each layer of the fireproof protection layer is dried at intervals of 9 hours, the next layer of the fireproof protection layer is sprayed;
s7, finally, placing the light sandwich concrete angle steel truss girder coated with the fireproof protection layer into a prepared girder face spraying coating layer framework mould and fixing, then spraying the outermost layer girder face coating layer, wherein the thickness of the girder face coating layer is 10mm, the coating layer adopts an environment-friendly non-combustible cement-based concrete reinforcing agent, the girder face coating layer can be constructed in two layers, the thickness of each layer of girder face coating layer is 4mm, each layer of girder face coating layer is compacted, pressed, leveled and polished after being manufactured, and each layer of girder face coating layer is dried after the interval of 9 h;
s8, after the beam face wrapping layer die is removed, the beam face and the beam angle of the light sandwich concrete angle steel truss beam are checked, the defects are repaired, and the perfectness of the hoisting holes and the exposed angle steel is checked.
Example 2
A manufacturing method of a light sandwich concrete angle steel truss girder comprises the following steps:
s1, manufacturing an angle steel truss beam angle through-length angle steel, selecting according to structural requirements and angle steel gusset plate size requirements, marking, cutting and blanking the selected angle steel along the length direction of the angle steel when manufacturing the beam angle steel, polishing and grinding burrs, and finally using a stone line to weld position lines of a straight web member angle steel and a diagonal web member angle steel at the web member connecting node position of the beam angle through-length angle steel, wherein the material of the beam angle through-length angle steel is the same as that of the web member angle steel, the thickness of the beam angle through-length angle steel is 6mm, and the through-length angle steel can be a finished product or can be formed by welding steel plates;
s2, when manufacturing straight web member angle steel and inclined web member angle steel, firstly marking selected straight web member angle steel and inclined web member angle steel materials along the length direction of the angle steel by using a pencil, cutting and blanking, polishing burrs and grinding, and finally marking angle steel welding position lines on the beam corner full-length angle steel, the straight web member angle steel and the inclined web member angle steel to manufacture angle steel truss beam straight web member angle steel and inclined web member angle steel, wherein the straight web member angle steel and the inclined web member angle steel are the same in material;
s3, performing assembly welding on parts, drawing the position lines of the connecting nodes of the angle steel web member angle steel of the beam surface on a preset assembly welding steel platform by using a pen according to the proportion of 1:1, then placing beam corner main angle steel, straight web member angle steel and diagonal web member angle steel on the corresponding position lines of the connecting nodes of the beam corner through long angle steel straight web member angle steel and diagonal web member angle steel, checking the size by using a measuring tool, and then welding;
s4, welding hoisting internal thread sleeves at the hoisting points and the pairing positions of the light sandwich concrete angle steel truss girder, wherein the diameter of each hoisting internal thread sleeve is 18mm, the length of each hoisting internal thread sleeve is 100mm, each hoisting internal thread sleeve is paired and installed, each surface of each end is provided with two hoisting internal thread sleeves, each end is provided with 8 ends, the total number of the two ends is 16, welding slag is cleaned, after repair welding inspection, hoisting bolts are screwed in the embedded sleeves, and adhesive tapes are wrapped for protection treatment;
s5, horizontally placing the angle steel framework of the manufactured lightweight sandwich concrete angle steel truss girder into a prepared lightweight concrete pouring mold in advance, fixing, pouring lightweight concrete, vibrating by using a vibrating rod with the diameter of 60mm while pouring until the height reaches the required height, standing, and pushing into a concrete steam curing box for curing;
s6, horizontally placing the steamed and cured lightweight sandwich concrete angle steel truss girder into a fireproof protection layer spraying frame mold after demolding and fixing, then spraying a fireproof protection layer on the exterior of the lightweight sandwich concrete angle steel truss girder, wherein the thickness of the fireproof protection layer is 40mm, the protection layer is environment-friendly non-combustible cement fireproof paint, when the fireproof protection layer is manufactured, the thickness of the fireproof protection layer is 8mm, the number of layers of the fireproof protection layer is 5, after the fireproof protection layer is manufactured, the fireproof protection layer is compacted, flattened and polished, and after each layer of the fireproof protection layer is dried at intervals of 10 hours, the next layer of the fireproof protection layer is sprayed;
s7, finally, placing the light sandwich concrete angle steel truss girder coated with the fireproof protection layer into a prepared girder face spraying coating layer framework mould and fixing, then spraying the outermost layer girder face coating layer, wherein the thickness of the girder face coating layer is 10mm, the coating layer adopts an environment-friendly non-combustible cement-based concrete reinforcing agent, the girder face coating layer can be constructed in two layers, the thickness of each layer of girder face coating layer is 3mm, each layer of girder face coating layer is compacted, pressed, leveled and polished after being manufactured, and each layer of girder face coating layer is dried after 10h interval;
s8, after the beam face wrapping layer die is removed, the beam face and the beam angle of the light sandwich concrete angle steel truss beam are checked, the defects are repaired, and the perfectness of the hoisting holes and the exposed angle steel is checked.
Example 3
A manufacturing method of a light sandwich concrete angle steel truss girder comprises the following steps:
s1, manufacturing an angle steel truss beam angle through-length angle steel, selecting according to structural requirements and angle steel gusset plate size requirements, marking, cutting and blanking the selected angle steel along the length direction of the angle steel when manufacturing the beam angle steel, polishing and grinding burrs, and finally using a stone line to weld position lines of a straight web member angle steel and a diagonal web member angle steel at the web member connecting node position of the beam angle through-length angle steel, wherein the material of the beam angle through-length angle steel is the same as that of the web member angle steel, the thickness of the beam angle through-length angle steel is 7mm, and the through-length angle steel can be a finished product or can be formed by welding steel plates;
s2, when manufacturing straight web member angle steel and inclined web member angle steel, firstly marking selected straight web member angle steel and inclined web member angle steel materials along the length direction of the angle steel by using a pencil, cutting and blanking, polishing burrs and grinding, and finally marking angle steel welding position lines on the beam corner full-length angle steel, the straight web member angle steel and the inclined web member angle steel to manufacture angle steel truss beam straight web member angle steel and inclined web member angle steel, wherein the straight web member angle steel and the inclined web member angle steel are the same in material;
s3, performing assembly welding on parts, drawing the position lines of the connecting nodes of the angle steel web member angle steel of the beam surface on a preset assembly welding steel platform by using a pen according to the proportion of 1:1, then placing beam corner main angle steel, straight web member angle steel and diagonal web member angle steel on the corresponding position lines of the connecting nodes of the beam corner through long angle steel straight web member angle steel and diagonal web member angle steel, checking the size by using a measuring tool, and then welding;
s4, welding hoisting internal thread sleeves at the hoisting points and the pairing positions of the light sandwich concrete angle steel truss girder, wherein the diameter of each hoisting internal thread sleeve is 18mm, the length of each hoisting internal thread sleeve is 100mm, each hoisting internal thread sleeve is paired and installed, each surface of each end is provided with two hoisting internal thread sleeves, each end is provided with 8 ends, the total number of the two ends is 16, welding slag is cleaned, after repair welding inspection, hoisting bolts are screwed in the embedded sleeves, and adhesive tapes are wrapped for protection treatment;
s5, horizontally placing the angle steel framework of the manufactured lightweight sandwich concrete angle steel truss girder into a prepared lightweight concrete pouring mold in advance, fixing, pouring lightweight concrete, vibrating by using a vibrating rod with the diameter of 60mm while pouring until the height reaches the required height, standing, and pushing into a concrete steam curing box for curing;
s6, horizontally placing the steamed and cured lightweight sandwich concrete angle steel truss girder into a fireproof protection layer spraying frame mold after demolding and fixing, then spraying a fireproof protection layer on the exterior of the lightweight sandwich concrete angle steel truss girder, wherein the thickness of the fireproof protection layer is 35mm, the protection layer is environment-friendly non-combustible cement fireproof paint, when the fireproof protection layer is manufactured, the thickness of the fireproof protection layer is 7mm, the number of layers of the fireproof protection layer is 5, after the fireproof protection layer is manufactured, the fireproof protection layer is compacted, flattened and polished, and after each layer of the fireproof protection layer is dried at intervals of 11 hours, the next layer of the fireproof protection layer is sprayed;
s7, finally, placing the light sandwich concrete angle steel truss girder coated with the fireproof protection layer into a prepared girder face spraying coating layer framework mould and fixing, then spraying the outermost layer girder face coating layer, wherein the thickness of the girder face coating layer is 10mm, the coating layer adopts an environment-friendly non-combustible cement-based concrete reinforcing agent, the girder face coating layer can be constructed in two layers, the thickness of each layer of girder face coating layer is 2mm, each layer of girder face coating layer is compacted, pressed, leveled and polished after the production is finished, and each layer of girder face coating layer is dried after the interval of 12 h;
s8, after the beam face wrapping layer die is removed, the beam face and the beam angle of the light sandwich concrete angle steel truss beam are checked, the defects are repaired, and the perfectness of the hoisting holes and the exposed angle steel is checked.
Example 4
A manufacturing method of a light sandwich concrete angle steel truss girder comprises the following steps:
s1, manufacturing an angle steel truss beam angle through-length angle steel, selecting according to structural requirements and angle steel gusset plate size requirements, marking, cutting and blanking the selected angle steel along the length direction of the angle steel when manufacturing the beam angle steel, polishing and grinding burrs, and finally using a stone line to weld position lines of a straight web member angle steel and a diagonal web member angle steel at the web member connecting node position of the beam angle through-length angle steel, wherein the material of the beam angle through-length angle steel is the same as that of the web member angle steel, the thickness of the beam angle through-length angle steel is 10mm, and the through-length angle steel can be a finished product or can be formed by welding steel plates;
s2, when manufacturing straight web member angle steel and inclined web member angle steel, firstly marking selected straight web member angle steel and inclined web member angle steel materials along the length direction of the angle steel by using a pencil, cutting and blanking, polishing burrs and grinding, and finally marking angle steel welding position lines on the beam corner full-length angle steel, the straight web member angle steel and the inclined web member angle steel to manufacture angle steel truss beam straight web member angle steel and inclined web member angle steel, wherein the straight web member angle steel and the inclined web member angle steel are the same in material;
s3, performing assembly welding on parts, drawing the position lines of the connecting nodes of the angle steel web member angle steel of the beam surface on a preset assembly welding steel platform by using a pen according to the proportion of 1:1, then placing beam corner main angle steel, straight web member angle steel and diagonal web member angle steel on the corresponding position lines of the connecting nodes of the beam corner through long angle steel straight web member angle steel and diagonal web member angle steel, checking the size by using a measuring tool, and then welding;
s4, welding hoisting internal thread sleeves at the hoisting points and the pairing positions of the light sandwich concrete angle steel truss girder, wherein the diameter of each hoisting internal thread sleeve is 18mm, the length of each hoisting internal thread sleeve is 100mm, each hoisting internal thread sleeve is paired and installed, each surface of each end is provided with two hoisting internal thread sleeves, each end is provided with 8 ends, the total number of the two ends is 16, welding slag is cleaned, after repair welding inspection, hoisting bolts are screwed in the embedded sleeves, and adhesive tapes are wrapped for protection treatment;
s5, horizontally placing the angle steel framework of the manufactured lightweight sandwich concrete angle steel truss girder into a prepared lightweight concrete pouring mold in advance, fixing, pouring lightweight concrete, vibrating by using a vibrating rod with the diameter of 60mm while pouring until the height reaches the required height, standing, and pushing into a concrete steam curing box for curing;
s6, horizontally placing the steamed and cured lightweight sandwich concrete angle steel truss girder into a fireproof protection layer spraying frame mold after demolding and fixing, then spraying a fireproof protection layer on the exterior of the lightweight sandwich concrete angle steel truss girder, wherein the thickness of the fireproof protection layer is 25mm, the protection layer is environment-friendly non-combustible cement fireproof paint, when the fireproof protection layer is manufactured, the thickness of the fireproof protection layer is 5mm, the number of layers of the fireproof protection layer is 5, after the fireproof protection layer is manufactured, the fireproof protection layer is compacted, flattened and polished, and after each layer of the fireproof protection layer is dried at intervals of 14 hours, the next layer of the fireproof protection layer is sprayed;
s7, finally, placing the light sandwich concrete angle steel truss girder coated with the fireproof protection layer into a prepared girder face spraying coating layer frame mould and fixing, then spraying the outermost layer girder face coating layer, wherein the thickness of the girder face coating layer is 10mm, the coating layer adopts an environment-friendly non-combustible cement-based concrete reinforcing agent, the girder face coating layer can be constructed in two layers, the thickness of each layer of girder face coating layer is 2.5mm, each layer of girder face coating layer is compacted, pressed, leveled and smeared after the production is finished, and each layer of girder face coating layer is dried after 15h interval;
s8, after the beam face wrapping layer die is removed, the beam face and the beam angle of the light sandwich concrete angle steel truss beam are checked, the defects are repaired, and the perfectness of the hoisting holes and the exposed angle steel is checked.
The invention has the beneficial effects that: the light sandwich concrete angle steel truss girder manufactured by the invention has the advantages of high strength, strong practicability, low cost, simple construction and contribution to popularization and use.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A manufacturing method of a light sandwich concrete angle steel truss girder is characterized by comprising the following steps:
s1, manufacturing an angle steel truss girder angle through-length angle steel, marking the selected angle steel along the length direction of the angle steel when manufacturing the girder angle steel, cutting and blanking, polishing and grinding burrs, and finally welding position lines of a straight web member angle steel and an inclined web member angle steel at the web member connecting node position of the girder angle through-length angle steel, wherein the material of the girder angle through-length angle steel is the same as that of the web member angle steel, the thickness of the girder angle through-length angle steel is more than 4mm, and the through-length angle steel can be a finished product or can be formed by welding steel plates;
s2, when manufacturing straight web member angle steel and inclined web member angle steel, firstly marking selected straight web member angle steel and inclined web member angle steel materials along the length direction of the angle steel by using a pencil, cutting and blanking, polishing burrs and grinding, and finally marking angle steel welding position lines on the beam corner full-length angle steel, the straight web member angle steel and the inclined web member angle steel to manufacture angle steel truss beam straight web member angle steel and inclined web member angle steel, wherein the straight web member angle steel and the inclined web member angle steel are the same in material;
s3, performing assembly welding on parts, drawing the position lines of the connecting nodes of the angle steel web member angle steel of the beam surface on a preset assembly welding steel platform by using a pen according to the proportion of 1:1, then placing beam corner main angle steel, straight web member angle steel and diagonal web member angle steel on the corresponding position lines of the connecting nodes of the beam corner through long angle steel straight web member angle steel and diagonal web member angle steel, checking the size by using a measuring tool, and then welding;
s4, welding hoisting internal thread sleeves at the hoisting points and the pairing positions of the light sandwich concrete angle steel truss girder, installing two hoisting internal thread sleeves on each surface of each end, wherein each end is 8, the two ends are 16 in total, cleaning welding slag, screwing hoisting bolts into the embedded sleeves after repair welding inspection, and wrapping adhesive tapes for protection treatment;
s5, horizontally placing the angle steel framework of the manufactured lightweight sandwich concrete angle steel truss girder into a prepared lightweight concrete pouring mold in advance, fixing, then pouring lightweight concrete, vibrating by using a vibrating bar during pouring until the height reaches the required height, standing, and pushing into a concrete steam curing box for curing;
s6, horizontally placing the steamed lightweight sandwich concrete angle steel truss girder into a fireproof protection layer spraying frame mold after demolding and fixing, then spraying a fireproof protection layer on the exterior of the lightweight sandwich concrete angle steel truss girder, compacting, flattening and polishing the fireproof protection layer after the fireproof protection layer is manufactured, and performing spraying work on the next layer after each fireproof protection layer is dried at intervals of more than 8 hours;
s7, finally, placing the light sandwich concrete angle steel truss girder coated with the fireproof protective layer into a prepared girder face spraying coating layer frame mould and fixing, then carrying out spraying work of an outermost layer girder face coating layer, wherein the girder face coating layer can be constructed in two layers, the coating layer of each layer of girder face is not more than 5mm, each layer is compacted, pressed and smoothed after the manufacturing is finished, and each layer of girder face coating layer is dried after the interval of more than 8 hours;
s8, after the beam face wrapping layer die is removed, the beam face and the beam angle of the light sandwich concrete angle steel truss beam are checked, the defects are repaired, and the perfectness of the hoisting holes and the exposed angle steel is checked.
2. The method for manufacturing the lightweight sandwich concrete angle steel truss girder according to claim 1, wherein in the step S4, the diameter of the hoisting internal thread bushing is 18mm, and the length is 100 mm.
3. The method for manufacturing a lightweight sandwich concrete angle steel truss girder according to claim 2, wherein in step S5, the diameter of the vibrating rod is 60 mm.
4. The method for manufacturing a lightweight sandwich concrete angle steel truss girder according to claim 3, wherein in step S6, the thickness of the fireproof protective layer is 50 mm.
5. The manufacturing method of the lightweight sandwich concrete angle steel truss girder according to claim 4, wherein in step S6, the protective layer is an environment-friendly non-combustible cement fire retardant coating.
6. The manufacturing method of the lightweight sandwich concrete angle steel truss girder according to claim 5, wherein in step S6, the thickness of the fireproof protective layer is less than 10mm, and the number of fireproof protective layers is 5.
7. The method for manufacturing a lightweight sandwich concrete angle steel truss girder according to any one of claims 1 to 6, wherein in step S7, the thickness of the beam surface coating layer is 10mm, and the coating layer is made of an environment-friendly non-combustible cement-based concrete reinforcing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910117911.5A CN111559001A (en) | 2019-02-13 | 2019-02-13 | Manufacturing method of light sandwich concrete angle steel truss girder |
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| CN201148666Y (en) * | 2008-01-09 | 2008-11-12 | 广西大学 | Steel truss combined connecting girder |
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| CN203238845U (en) * | 2013-04-11 | 2013-10-16 | 山东同圆设计集团有限公司 | Cantilever beam component with high load-bearing capacity |
| CN203669204U (en) * | 2013-12-02 | 2014-06-25 | 广西科技大学 | Trussed steel reinforced concrete coupling beam |
| CN203834842U (en) * | 2014-03-28 | 2014-09-17 | 河南杭萧钢构有限公司 | Decoration node for steel column, after sprayed with fire retardant coating, of steel-structure building |
| CN104818801A (en) * | 2015-05-08 | 2015-08-05 | 重庆欧冠钢结构有限公司 | Pre-fabricated section steel reinforced concrete beam and pillar and manufacturing method |
| CN106639147A (en) * | 2016-12-23 | 2017-05-10 | 中建八局第二建设有限公司 | Construction method of super high-rise building reinforced layer steel structure outrigger truss |
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| CN201148666Y (en) * | 2008-01-09 | 2008-11-12 | 广西大学 | Steel truss combined connecting girder |
| CN201158899Y (en) * | 2008-03-04 | 2008-12-03 | 广西大学 | Steel truss steel bone concrete beam |
| KR101006835B1 (en) * | 2009-09-18 | 2011-01-12 | (주)삼현피에프 | Complex upper structure of continuous bridge and method of constructing same |
| CN203238845U (en) * | 2013-04-11 | 2013-10-16 | 山东同圆设计集团有限公司 | Cantilever beam component with high load-bearing capacity |
| CN203669204U (en) * | 2013-12-02 | 2014-06-25 | 广西科技大学 | Trussed steel reinforced concrete coupling beam |
| CN203834842U (en) * | 2014-03-28 | 2014-09-17 | 河南杭萧钢构有限公司 | Decoration node for steel column, after sprayed with fire retardant coating, of steel-structure building |
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Application publication date: 20200821 |