CN114592706A - Nondestructive connection construction method for steel structure auxiliary component and main structure - Google Patents
Nondestructive connection construction method for steel structure auxiliary component and main structure Download PDFInfo
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- CN114592706A CN114592706A CN202210502806.5A CN202210502806A CN114592706A CN 114592706 A CN114592706 A CN 114592706A CN 202210502806 A CN202210502806 A CN 202210502806A CN 114592706 A CN114592706 A CN 114592706A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 85
- 239000010959 steel Substances 0.000 title claims abstract description 85
- 238000010276 construction Methods 0.000 title claims abstract description 43
- 238000003466 welding Methods 0.000 claims abstract description 17
- 241001280173 Crassula muscosa Species 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 239000011265 semifinished product Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 11
- 230000007306 turnover Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 8
- 230000006872 improvement Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
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- 239000011150 reinforced concrete Substances 0.000 description 1
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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
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3276—Arrangements on buildings for connecting safety-lines
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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
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3295—Guide tracks for safety lines
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
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Abstract
The invention relates to the field of construction safety facilities, and discloses a nondestructive connection construction method of a steel structure auxiliary component and a main structure, which specifically comprises the following steps: s1: construction preparation: preparing a buckle type hoop accessory, a lifeline upright post and a lifeline steel wire rope, wherein the buckle type hoop accessory is provided with a plurality of standard sections with chains which can be spliced end to end and a tail end connecting section used as a fastening end; s2: assembling a watch chain and welding a stand column: the two adjacent belt chain standard links are hinged, and the belt chain standard link and the tail end connecting link are hinged; firstly, forming a belt-shaped chain which is not closed, and welding the circular tube in the middle of the belt-shaped chain; s3: hoisting and assembling at high altitude: hoisting the semi-finished product lifeline upright post by using a chain block; s4: installing a steel wire rope: the upper end of the round pipe is provided with a hole for the steel wire rope to penetrate through, the end of the steel wire rope is provided with a rope clip, and the steel wire rope is tightened by using a tightener. The invention can avoid the upright post from being directly welded on the steel truss and the damage to the main body of the steel truss caused by the disassembly of the welded upright post.
Description
Technical Field
The invention relates to the field of construction safety facilities, in particular to a nondestructive connection construction method of a steel structure auxiliary component and a main structure.
Background
According to the requirements of relevant safety specifications, a lifeline upright post must be arranged in the high-altitude assembly operation of steel structure engineering, in the traditional lifeline upright post installation process, the lifeline upright post is directly connected with a main structure in an oxygen-acetylene welding mode, the lifeline upright post is detached in a gas cutting mode after the steel structure engineering operation is completed, the steel structure main body is easily damaged due to various factors such as operation of operators in the mounting and detaching process, and the quality of a steel structure has hidden dangers.
Disclosure of Invention
The invention aims to provide a construction method for the nondestructive connection of an auxiliary component and a main structure of a steel structure, which prevents a lifeline upright post from being welded on a steel truss and easily damages the steel truss during disassembly.
In order to achieve the purpose, the construction method for the nondestructive connection of the steel structure auxiliary component and the main structure specifically comprises the following steps:
s1: construction preparation: preparing buckle type hoop accessories used for being locked on a truss chord member of the roof, round pipes used as life line stand columns and steel wire ropes used as life lines and arranged at the upper ends of the round pipes in a penetrating mode, wherein the buckle type hoop accessories are provided with a plurality of standard sections with chains which can be spliced end to end and a tail end connecting section used as a fastening end to form an annular closed hoop;
s2: assembling a watch chain and welding a stand column: the two adjacent belt chain standard links are hinged, and the belt chain standard link and the tail end connecting link are hinged; firstly, forming a belt-shaped chain which is not closed, welding a circular pipe at the middle position of the belt-shaped chain, wherein the circular pipe is vertically arranged, and the belt-shaped chain and the circular pipe thereon are combined into a semi-finished product lifeline upright post;
s3: hoisting and assembling at high altitude: hoisting the semi-finished lifeline upright post by using a chain block to enable the belt-shaped chain to be wound on the truss chord of the roof, vertically arranging the circular tubes on the truss chord of the roof, fastening the tail end connecting joint below the truss chord of the roof, enabling the circular tubes to be placed on the truss chord of the roof by virtue of static friction between the buckle type hoop and the truss chord of the roof, and placing a plurality of circular tubes on the truss chord of the roof at intervals;
s4: installing a steel wire rope: the upper end of the round pipe is provided with a hole for the steel wire rope to penetrate through, the end of the steel wire rope is provided with a rope clip, and the steel wire rope is tightened by using a tightener.
As a further improvement of the construction method for the nondestructive connection of the auxiliary member and the main structure of the steel structure, in S2, the concrete form of the hinge joint is splicing by bolts, the threads of the bolts are only arranged at the end parts, the middle sections are smooth, the smooth middle sections are used as hinge pins to be inserted between the adjacent standard sections of the belt chain and between the tail end connecting section and the standard sections of the belt chain, the splicing parts are combined in a concave-convex shape, the end parts of the bolts with the threads are completely penetrated, and nuts are arranged for fastening after the threaded end parts are penetrated.
As a further improvement of the construction method for the nondestructive connection of the steel structure auxiliary member and the main structure, the diameter of the bolt head of the bolt is larger than the thickness of the standard knot with the chain, so that the bolt head is abutted against the chord member of the roof truss, the compression area is reduced, the pressure is improved, and the tail end connecting knot and the standard knot with the chain are in the form of a straight panel, so that the straight surface is tangent to the chord member of the roof truss, and the chord member of the roof truss is compressed in the radial direction.
As a further improvement of the nondestructive connection construction method of the steel structure auxiliary component and the main structure, a pair of parallel lugs extend between the tail end connecting joints, the lugs are perpendicular to the tail end connecting joints, and a plurality of pairs of through holes which correspond to each other in parallel are formed in the lugs and are fastened through bolt and nut assemblies.
As a further improvement of the construction method for the nondestructive connection of the auxiliary component and the main structure of the steel structure, after the last section of bolt fastening lug is finished in S3, the hoisting speed is arranged according to the installation efficiency so as to reduce the high-altitude stockpiling of materials, and after the lifeline upright post is installed, the verticality of the circular tube is adjusted by using the triangular guiding rule, and then the bolt is screwed so as to compress the surface buckle type hoop and the truss chord of the roof.
As a further improvement of the construction method for the nondestructive connection of the auxiliary member and the main structure of the steel structure, in S4, the end of the steel wire rope is at least provided with 3 rope clamps at intervals, the end of the steel wire rope is penetrated back and forth in the 3 rope clamps, the steel wire rope forms an arc-shaped observation port between the two rope clamps close to the penetrated rope end, the observation port is periodically checked, and if the observation port has a reduction sign, the steel wire rope is proved to slide so as to remind the user to re-fasten the rope clamps.
As a further improvement of the construction method for the nondestructive connection of the auxiliary component and the main structure of the steel structure, the construction method further comprises the following steps:
s5: after the construction of the roof truss in the period of the construction period of the section is completed, the bolts and the split assemblies are disassembled and placed in a classified mode to reserve the period of the lower section for turnover use.
Drawings
Fig. 1 is a schematic view of a watch buckle type lifeline upright post.
FIG. 2 is a flow chart of the construction process.
Fig. 3 is a schematic view of a bolt.
FIG. 4 is a schematic view of an end connector.
Fig. 5 is a schematic view of watch chain assembly.
Fig. 6 is a schematic view of pillar welding.
FIG. 7 is a schematic view of a bolted end joint.
Fig. 8 is a schematic view showing the completion of the installation of the column.
Fig. 9 is a schematic view of a wire rope.
Fig. 10 is a schematic view of a safety line clip.
Fig. 11 is a schematic view of the arrangement of the lifeline pillars.
Fig. 12 is a schematic view of a structure in which the diameter of the bolt head is smaller than the plate thickness of the straight face plate.
Fig. 13 is a schematic view of another bolt head structure.
FIG. 14 is a schematic diagram of a standard section.
FIG. 15 is a schematic view of another end connector.
Reference numerals: 1. a circular tube; 2. a wire rope; 3. standard knot with chain; 4. a terminal connecting section; 5. a bolt; 6. a bolt head; 7. a roof truss chord; 8. rope clamping; 9. a viewing port.
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. 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", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1-10, a nondestructive connection construction method of a steel structure auxiliary member and a main structure is disclosed, which specifically comprises the following steps:
s1: construction preparation: preparing buckle type hoop accessories used for being locked on a truss chord member 7 of a roof, a round pipe 1 used as a lifeline upright post and a steel wire rope 2 used as a lifeline and arranged at the upper end of the round pipe in a penetrating mode, wherein the buckle type hoop accessories are provided with a plurality of standard sections 3 with chains which can be spliced end to end and a tail end connecting section 4 used as a fastening end so as to form an annular closed hoop;
s2: assembling a watch chain and welding a stand column: the two adjacent belt chain standard links 3 are hinged, and the belt chain standard links 3 and the tail end connecting link 4 are hinged; firstly, forming a belt-shaped chain which is not closed, welding the circular tube 1 at the middle position of the belt-shaped chain, wherein the circular tube 1 is vertically arranged, and the belt-shaped chain and the circular tube 1 thereon are combined into a semi-finished product lifeline upright post;
s3: hoisting and assembling at high altitude: hoisting the semi-finished lifeline upright post by using a chain block to enable a belt-shaped chain to be wound on a roof truss chord 7, vertically arranging the circular tubes 1 on the roof truss chord 7, fastening the tail end connecting joint 4 below the roof truss chord 7, enabling the circular tubes 1 to stand on the roof truss chord 7 by virtue of static friction between the buckle hoop and the roof truss chord 7, and standing a plurality of circular tubes 1 on one roof truss chord 7 at intervals;
s4: installing a steel wire rope: the upper end of the round pipe 1 is provided with a hole for penetrating the steel wire rope 2, the end of the steel wire rope is provided with a rope clamp 8, and the steel wire rope is tightened by using a tightener.
In this embodiment S2, the concrete form of the hinge joint is to use the bolt 5 to splice, the thread of the bolt 5 is only provided at the end, and the middle section is smooth, the smooth middle section is used as the hinge pin to be inserted between the adjacent standard links 3 of the belt chain, and between the terminal connecting link 4 and the standard link 3 of the belt chain, the form of the splice part is concave-convex combined, and the end with the thread of the bolt 5 is completely penetrated, and is provided with a nut to fasten after penetrating.
In this embodiment, the diameter of the bolt head 6 of the bolt 5 is larger than the thickness of the standard link with chain 3, so that the bolt head 6 abuts against the chord member 7 of the roof truss, thereby reducing the pressure-bearing area and increasing the pressure, and the terminal connecting link 4 and the standard link with chain 3 are in the form of a straight panel, so that the straight surface is tangent to the chord member 7 of the roof truss, thereby the chord member 7 of the roof truss is radially pressed.
In this embodiment, a pair of parallel lugs extend between the end connecting joints 4, the lugs are perpendicular to the end connecting joints 4, and a plurality of pairs of parallel through holes are formed in the lugs for fastening through a bolt and nut assembly.
In this embodiment, after the last bolt fastening lug is completed in S3, the lifting speed is arranged according to the installation efficiency to reduce the stockpiling of materials at high altitude, and after the lifeline upright post is installed, the triangular guiding rule is used to adjust the verticality of the circular tube, and then the bolt is screwed down to press the buckle type hoop and the roof truss chord 7.
In this embodiment, in S4, the end of the steel wire rope 2 is provided with at least 3 spaced rope clips 8, the end of the steel wire rope 2 is threaded back and forth through the 3 rope clips 8, and between the two rope clips 8 near the threaded back end, the steel wire rope 2 forms an arc-shaped observation port 9, the observation port 9 is periodically checked, and if the observation port 9 shows a reduction, it is proved that the steel wire rope 2 is slipping to remind to re-fasten the rope clips.
In this embodiment, the method further includes:
s5: after the construction of the roof truss in the period of the construction period of the section is completed, the bolts and the split assemblies are disassembled and placed in a classified mode to reserve the period of the lower section for turnover use.
Example 2
As shown in fig. 11-15, when the diameter of the bolt head 6 is smaller than the thickness of the straight panel, the straight panel independently abuts against the roof truss chord 7, the difference between the bolt head and the straight panel in embodiment 1 is easy to form multi-point concentrated pressure, and in this embodiment, the straight panel completely abuts against the bolt head to provide linear uniformly distributed pressure, the concentrated pressure can form a plurality of elastic concave points on the roof truss chord 7, so as to form a multi-point local embedding effect, and after disassembly, the elastic deformation can be recovered; linear pressure, because pressure distribution is even, roof truss chord member 7 rigidity is strong, can reduce the displacement maximum value that warp the production, prevents to appear warping irreversible technological effect. In this embodiment, the straight panels of the end joints 4 themselves may act as lugs to save material costs.
Example 3
The station house roof structure adopts a steel pipe concrete column + orthogonal space pipe truss structure system. Typical column pitches in the forward rail direction are 20m, 66m and 86m, typical column pitches in the vertical rail direction are 12 m-21.5 m, and the maximum section size of the steel pipe column reaches phi 1300 multiplied by 45. The steel roof main truss is a steel pipe triangular truss, and the span of the steel roof main truss is as large as 86 m. The engineering steel structure member mainly comprises a plurality of cross-section forms such as a welding cross section (used for a steel reinforced concrete column), a circular steel pipe truss, a rectangular steel pipe truss, welding H-shaped steel, hot rolling H-shaped steel and the like, the building roof main truss is lifted up cumulatively twice according to the requirements of a scheme in the construction process, and the length of a total set life line is about 1.5 ten thousand meters.
The construction method comprises the following specific steps:
1. preparation for construction
And customizing standard watch buckle type lifeline upright post belt chain standard joints and bolts according to design and scheme requirements, and preparing a 1.5m high round pipe and a steel wire rope on site. And (4) after the material enters the field, a quality inspector checks and accepts the component parts according to standard requirements.
2. Assembling watch chain and welding upright post
After the materials enter the field, the watch chains are connected by using bolts, circular tube upright posts are welded on the standard joints, and the two tail ends of the standard joints are provided with specific connecting joints.
3. High-altitude lifting assembly
And the hand chain block is used for hoisting the semi-finished product lifeline upright post to complete the installation of the last bolt, the hoisting speed is reasonably arranged according to the installation efficiency, the material high-altitude accumulation is avoided, and the high-altitude falling risk is reduced. After the installation is finished, the perpendicularity of the stand column is adjusted by using the triangular guiding rule, and then the bolt is screwed down, so that the lifeline stand column is ensured not to slide;
4. wire rope installation (for use)
A proper opening is drilled on the stand column through an electric drill, the steel wire rope penetrates through the opening, at least three rope clamps are arranged at the end of the steel wire rope, and the two ends of the steel wire rope are tightened by using tighteners. And (4) checking and accepting the life line stand column after the installation work is finished, and formally putting into use after the check and acceptance is qualified.
5. Disassembly for turnover
After the use is accomplished, dismantle bolt, split subassembly, categorised the placing to follow-up turnover is used.
6. The specification and the size of the material and the equipment adopted by the method are shown in the table.
Material specification and dimension table
Statistical meter for machine tool and equipment
7. The method shows the acceptance standard of the hoop and the acceptance standard of the lifeline upright post
Hoop acceptance standard meter
Standard watch for checking and accepting life line upright column
The process principle of the invention is as follows:
the semi-assembly type lifeline stand takes the connecting medium in the traditional construction process to be changed as a core, the buckle type chain belt is used for connecting the steel structure main body and the lifeline stand, the static friction force generated by clamping the hoop and the steel structure pipe truss is utilized to overcome the gravity generated when the high-altitude operation personnel fall, the service performance of the lifeline stand is met, the damage to the steel structure main body in the traditional construction process due to the utilization of acetylene welding and later-stage gas cutting dismantling process is successfully avoided, and the nondestructive connection effect is achieved. The semi-assembly lifeline stand mainly comprises a watch buckle type chain belt, a bolt and a stand column, the watch buckle type chain belt is customized according to the design size, and the chain belt is assembled by the bolt after entering a field. And secondly, welding a lifeline upright post on the standard section of the chain belt. And finally, integrally hoisting the installed lifeline upright post to a specified height for bolt assembly.
The embodiment needs 1500 round steel pipes with the diameter of 48 x 3.5mm and the specification of 1.5m in total, the specific specification and the size of the hoop are customized according to the cross section data of the truss of the on-site pipe, and after the semi-fabricated lifeline upright post is used, great economic and social benefits are obtained in the aspects of saving materials, reducing working procedures, accelerating the progress and ensuring the quality of a steel structure main body, so that the cost is saved and the construction period is shortened.
The invention develops a new method which can eliminate the hidden danger of the durability damage of the main structure of the steel structure caused by the traditional welding form and can monitor the safety performance of the lifeline upright post on the premise of meeting the safety maintenance performance of the lifeline upright post. Through repeated practice, the invention finally provides a construction method for the lossless connection of the steel structure auxiliary component and the main structure, and successfully solves the problem of damage to the steel structure main body caused by the traditional welding and mounting process. .
The invention has the following beneficial effects:
the semi-fabricated lifeline upright post is connected with the upright post and the steel structure main body by taking the hoop as a medium so as to achieve the lossless connection effect.
The semi-assembly lifeline stand column adopts a mode of connecting the watch buckle type hoop and the mounting bolt to form a sliced standard combined component, so that the installation, the disassembly and the turnover are convenient, the loss is reduced, and the material is saved.
The semi-assembly lifeline upright post has standardized material specification, size and connection mode, and can form the combination of different bearing component sections and bearing areas.
The lifeline stand column can be assembled on the ground of the in-situ low-rise building along with the actual construction progress of the site, so that the working efficiency is effectively improved, and the construction progress is promoted.
The method can be suitable for steel structure engineering with a lifeline upright arranged for high-altitude operation;
the foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. It will be apparent to those skilled in the art that various equivalent substitutions and obvious modifications can be made without departing from the spirit of the invention, and all changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (7)
1. A construction method for lossless connection of an auxiliary component and a main structure of a steel structure is characterized by comprising the following steps:
s1: construction preparation: preparing buckle type hoop accessories used for being locked on a truss chord member (7) of the roof, a round pipe (1) used as a lifeline upright post and a steel wire rope (2) used as a lifeline and arranged at the upper end of the round pipe in a penetrating mode, wherein the buckle type hoop accessories are provided with a plurality of standard sections (3) with chains which can be spliced end to end and a tail end connecting section (4) used as a fastening end so as to form an annular closed hoop;
s2: assembling a watch chain and welding a stand column: the two adjacent standard links (3) of the belt chain are hinged, and the standard links (3) of the belt chain are hinged with the tail end connecting link (4); firstly, forming a belt-shaped chain which is not closed, welding the circular tube (1) at the middle position of the belt-shaped chain, wherein the circular tube (1) is vertically arranged, and the belt-shaped chain and the circular tube (1) thereon are combined into a semi-finished product lifeline upright post;
s3: hoisting and assembling at high altitude: hoisting semi-finished lifeline upright posts by using a chain block, enabling a belt-shaped chain to be wound on a roof truss chord member (7), enabling the circular tubes (1) to be vertically arranged on the roof truss chord member (7), enabling the tail end connecting joint (4) to be fastened below the roof truss chord member (7), enabling the circular tubes (1) to stand on the roof truss chord member (7) by means of static friction force between the watch buckle type hoop and the roof truss chord member (7), and enabling a plurality of circular tubes (1) to stand on one roof truss chord member (7) at intervals;
s4: installing a steel wire rope: the upper end of the round pipe (1) is provided with a hole for the steel wire rope (2) to penetrate, the end of the steel wire rope is provided with a rope clamp (8), and the steel wire rope is tightened by using a tightener.
2. The construction method for the nondestructive connection of the auxiliary member and the main structure of the steel structure according to claim 1 is characterized in that in S2, the concrete form of the hinge joint is splicing by using bolts (5), the thread of the bolt (5) is only arranged at the end part, the middle section is smooth, the smooth middle section is used as a pin shaft for hinge joint and is arranged between the adjacent standard sections (3) with the chain, and the end connecting section (4) and the standard sections (3) with the chain are connected in a concave-convex shape, the end part with the thread of the bolt (5) is completely penetrated, and a nut is arranged for fastening after the end part with the thread is penetrated.
3. The construction method for the nondestructive connection of the steel structure auxiliary member and the main structure according to claim 2 is characterized in that the diameter of the bolt head (6) of the bolt (5) is larger than the thickness of the standard knot (3) with the chain, so that the bolt head (6) is abutted against the chord (7) of the roof truss, thereby reducing the compression area and increasing the pressure, and the end connecting knot (4) and the standard knot (3) with the chain are in the form of a straight panel, so that the straight surface is tangent to the chord (7) of the roof truss, thereby the chord (7) of the roof truss is compressed in the radial direction.
4. The construction method for the nondestructive connection between the steel structure auxiliary member and the main structure according to claim 3 is characterized in that a pair of parallel lugs extend between the end connecting joints (4), the lugs are perpendicular to the end connecting joints (4), and a plurality of pairs of through holes corresponding to each other in parallel are formed in the lugs and are fastened through bolt and nut assemblies.
5. The construction method for the nondestructive connection of the steel structure auxiliary member and the main structure according to claim 4 is characterized in that after the fastening of the lug by the last bolt is completed in S3, the lifting speed is arranged according to the installation efficiency to reduce the high-altitude stockpiling of materials, and after the installation of the lifeline upright post is completed, the verticality of the circular tube is adjusted by the triangular guiding rule, and then the bolt is screwed down to compress the watch buckle type hoop and the roof truss chord (7).
6. The construction method for the nondestructive connection of the steel structure auxiliary member and the main structure according to claim 5 is characterized in that in S4, at least 3 rope clamps (8) are arranged at the end of the steel wire rope (2), the end of the steel wire rope (2) is inserted back and forth in the 3 rope clamps (8), the steel wire rope (2) forms an arc-shaped observation opening (9) between the two rope clamps (8) close to the back-inserted rope end, the observation opening (9) is periodically checked, and if the observation opening (9) shows the reduction, the steel wire rope (2) is proved to slide so as to remind of re-fastening the rope clamps.
7. The construction method for the nondestructive connection of the steel structure auxiliary member and the main structure according to claim 6, further comprising:
s5: after the construction of the roof truss in the period of the construction period of the section is completed, the bolts and the split assemblies are disassembled and placed in a classified mode to reserve the period of the lower section for turnover use.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210502806.5A CN114592706A (en) | 2022-05-10 | 2022-05-10 | Nondestructive connection construction method for steel structure auxiliary component and main structure |
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| CN202210502806.5A CN114592706A (en) | 2022-05-10 | 2022-05-10 | Nondestructive connection construction method for steel structure auxiliary component and main structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN114776061A (en) * | 2022-06-22 | 2022-07-22 | 中铁建工集团有限公司 | Nondestructive connection construction method for steel structure auxiliary component and main structure |
| CN114776061B (en) * | 2022-06-22 | 2022-08-23 | 中铁建工集团有限公司 | Nondestructive connection construction method for steel structure auxiliary component and main structure |
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Application publication date: 20220607 |