CN113790760A - Supervision method for installation of super-large-span steel structure planar truss - Google Patents
Supervision method for installation of super-large-span steel structure planar truss Download PDFInfo
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- CN113790760A CN113790760A CN202111104629.7A CN202111104629A CN113790760A CN 113790760 A CN113790760 A CN 113790760A CN 202111104629 A CN202111104629 A CN 202111104629A CN 113790760 A CN113790760 A CN 113790760A
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- wire rope
- steel wire
- torsional shear
- prestress
- detection
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 238000009434 installation Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 9
- 210000003128 head Anatomy 0.000 claims abstract description 8
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 238000010079 rubber tapping Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010073 coating (rubber) Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 210000002489 tectorial membrane Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a supervision method for installation of a super-large span steel structure plane truss, which is not influenced by human factors, can visually realize an acceptance target and has small workload; detecting a torsional shear stud: the torsional shear bolt with the prestress is determined by purchasing, the torsional shear bolt is used for fastening the connecting flange, when the preset prestress is achieved, the quincunx head of the torsional shear bolt falls off, whether the quincunx head exists in the torsional shear bolt is observed by naked eyes, if not, the pretension is in place, otherwise, the pretension is unqualified; and (3) steel wire rope pre-tightening detection: the steel wire rope is pre-stressed and loaded in a factory, whether the steel wire rope is straightened or not is observed by naked eyes during field construction, the prestress is reached if the steel wire rope is straightened, and the prestress is not reached if the steel wire rope is not straightened; and (3) membrane detection: the two sides of the inspection film are completely clamped into the grooves of the guide rails and are not separated, otherwise, the film is not installed in place.
Description
Technical Field
The invention discloses a supervision method for installation of a super-large-span steel structure plane truss, and belongs to the technical field of steel structure plane trusses.
Background
In the steel structure plane truss installation, current generally through bolted connection such as welding or connection ball, steel structure plane truss installation back that targets in place, the tectorial membrane needs high altitude construction to pass through the rivet with the membrane fix on steel structure plane truss, receives the influence of workman's personal quality, and the person of checking and accepting does not know whether the installation reaches the pretension requirement, and the person of checking and accepting also can not one carry out the high altitude inspection moreover, causes to check and accept the link and has the condition that the link is not in place.
Disclosure of Invention
The invention overcomes the defects in the prior art, provides the supervision method for the installation of the super-large span steel structure plane truss, is not influenced by human factors, can visually realize the acceptance target and has small workload.
In order to solve the technical problems, the invention adopts the technical scheme that: a supervision method for installation of a super-large span steel structure plane truss comprises torsion shear stud detection, steel wire rope pre-tightening detection and film detection;
detecting a torsional shear stud: the torsional shear bolt with the prestress is determined by purchasing, the torsional shear bolt is used for fastening the connecting flange, when the preset prestress is achieved, the quincunx head of the torsional shear bolt falls off, whether the quincunx head exists in the torsional shear bolt is observed by naked eyes, if not, the pretension is in place, otherwise, the pretension is unqualified;
and (3) steel wire rope pre-tightening detection: the steel wire rope is pre-stressed and loaded in a factory, whether the steel wire rope is straightened or not is observed by naked eyes during field construction, the prestress is reached if the steel wire rope is straightened, and the prestress is not reached if the steel wire rope is not straightened;
and (3) membrane detection: the two sides of the inspection film are completely clamped into the grooves of the guide rails and are not separated, otherwise, the film is not installed in place.
And a wire tightener is arranged on the steel wire rope in the steel wire rope pre-tightening detection, and is used for tightening the steel wire rope and adjusting the pre-tightening force.
Compared with the prior art, the invention has the beneficial effects that: the connection parts of the trusses are connected by flanges, the pre-tightening effect can be visually seen by using torsional shear bolts, the steel wire ropes are pre-tightened before delivery, the steel wire ropes can realize the pre-tightening force only by tightening the trusses without bending, the membranes are pulled through by guide rails without high-altitude rivets, and the construction and acceptance check are simpler and more convenient.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the ear plate structure of the present invention.
Fig. 3 is a top sectional view of the ear plate structure of the present invention.
Fig. 4 is a schematic view of the structure of a flexible steel cord according to the invention.
FIG. 5 is a schematic structural view of the straddle of the present invention.
Fig. 6 is a schematic structural view of the guide rail of the present invention.
Fig. 7 is a schematic structural view of the guide rail mounting weather strip of the present invention.
Fig. 8 is a view showing a state of use of the guide rail of the present invention.
Fig. 9 is a schematic structural view of the longitudinal connecting frame mounting sleeve of the present invention.
In the figure: the device comprises a span frame 1, an upper chord 11, a lower chord 12, a zero rod 13, a web member 14, a flange connecting plate 15, a longitudinal connecting frame 2, a diagonal pulling rod 3, a flexible steel wire rope structure 4, a flexible steel wire rope 41, a flexible steel wire rope fixed end 42, a wire tightener 43, a flexible supporting connecting plate 44, a main component 45, a movable mounting seat 5, an ear plate structure 6, an adjusting positioning plate 61, an ear plate 62, an adjusting positioning hole 63, an ear plate hole 64, a pin shaft 65, a reinforcing rib plate 67, a groove 68, a guide rail 7, a guide rail body 71, a narrow slit 72, a guide hole 73, a blind hole 74, a self-tapping screw 75, a closing-in structure 76, a sealing strip 77, a positioning groove 79, a membrane 8 and a sleeve 9.
Detailed Description
The invention relates to a supervision method for installation of a super-large span steel structure plane truss, which comprises torsion shear stud detection, steel wire rope pre-tightening detection and film detection;
detecting a torsional shear stud: the torsional shear bolt with the prestress is determined by purchasing, the torsional shear bolt is used for fastening the connecting flange, when the preset prestress is achieved, the quincunx head of the torsional shear bolt falls off, whether the quincunx head exists in the torsional shear bolt is observed by naked eyes, if not, the pretension is in place, otherwise, the pretension is unqualified;
and (3) steel wire rope pre-tightening detection: the steel wire rope is pre-stressed and loaded in a factory, whether the steel wire rope is straightened or not is observed by naked eyes during field construction, the prestress is reached if the steel wire rope is straightened, and the prestress is not reached if the steel wire rope is not straightened;
and (3) membrane detection: the two sides of the inspection film are completely clamped into the grooves of the guide rails and are not separated, otherwise, the film is not installed in place.
And a wire tightener is arranged on the steel wire rope in the steel wire rope pre-tightening detection, and is used for tightening the steel wire rope and adjusting the pre-tightening force.
The invention is further illustrated with reference to specific examples.
As shown in fig. 1 to 9, the low-steel-content ultra-large-span steel structure system based on the high-precision planar truss comprises a span 1, a longitudinal connecting frame 2, a flexible steel wire rope structure 4, a movable mounting seat 5, a guide rail 7 and a membrane 8, wherein a plurality of the span 1 are distributed in parallel and equidistantly, the span 1 comprises an upper chord 11, a lower chord 12, a zero member 13, web members 14 and flange connecting plates 15, the upper chord 11 and the lower chord 12 are arranged in parallel, the upper chord 11 is positioned right above the lower chord 12, the upper chord 11 and the lower chord 12 are connected and fixed through a plurality of or obliquely arranged web members 14 or vertically arranged web members 14, corresponding two ends of the upper chord 11 and the lower chord 12 are connected and fixed through the zero member 13, the two ends of the upper chord 11 and the lower chord 12 are both fixedly provided with the flange connecting plates 15, the movable mounting seat 5 is connected and fixed on the flange connecting plates 15, the movable mounting base 5 is fixedly connected to a foundation bolt of the concrete ground pile through an ear plate structure 6;
the longitudinal connecting frames 2 are perpendicular to the spanning frame 1, the plurality of longitudinal connecting frames 2 are arranged at equal intervals and matched with the spanning frame 1 to form a double-layer square grid structure, the structure of the longitudinal connecting frames 2 is similar to that of the spanning frame 1, the upper rods and the lower rods of the longitudinal connecting frames 2 are straight rods, the two ends of the upper rods and the two ends of the lower rods are fixedly connected with the upper chord 11 and the lower chord 12 of the spanning frame 1, and the zero rods 13 and the web members 14 are also arranged between the upper rods and the lower rods;
the upper sides of the square grid structures are connected through crossed diagonal draw bars 3, and the lower sides of the square grid structures are connected together through crossed flexible steel wire rope structures 4;
the guide rail 7 is on a parallel with and strides 1 setting, and many guide rail 7 equidistant vertical setting is striding 1 top, adjacent two be provided with membrane 8 between the guide rail 7, the structure of guide rail 7 is: including guide rail body 71, guide rail body 71 is the arc structure, moves towards the distribution along steel construction plane truss arch, guide rail body 71's cross-section is the "8" font of lying flat, set up guide hole 73 along guide rail body 71's trend in guide rail body 71, just the symmetry is provided with two guide holes 73 on guide rail body 71, the both ends of guide rail body 71 all are provided with slot 72, slot 72 also sets up along guide rail body 71's trend, slot 72 and adjacent guide hole 73 intercommunication, two leave the distance between the guide hole 73, two guide rail body 1 upside between the guide hole 73 is provided with blind hole 74, guide rail body 71 is fixed guide rail body 1 on steel construction plane truss through installing self-tapping screw 75 in blind hole 74 bottom, and adjacent two be used for interlude membrane 8 between guide hole 73 of guide rail body 71.
The guide rail body 71 is of an integrally formed sheet metal structure.
Flexible wire rope structure 4 includes flexible wire rope 41, flexible wire rope stiff end 42, turn-buckle 43 and flexible support connecting plate 44, flexible support connecting plate 44 is fixed on adjacent principal component 45, flexible wire rope 41's both ends all are provided with flexible wire rope stiff end 42, the flexible wire rope stiff end 42 at flexible wire rope 41 both ends is fixed respectively at the flexible support connecting plate 44 on adjacent principal component 45, be provided with turn-buckle 43 on the flexible wire rope 41, through tension between the adjacent principal component 45 of turn-buckle 43 adjustment.
Reinforcing ribs 67 are transversely arranged between the two ear plates 62 and on the adjusting and positioning plate 61 at the outer side of the ear plates 62.
The highest point of the ear plate 2 is provided with a groove 8 used as a positioning mark, and the groove 8 is used for positioning and adjusting the relative height of the positioning plate 1.
The upper rod of the longitudinal connecting frame 2 is sleeved with a sleeve 9, and the sleeve 9 is used for converting sliding friction into rolling friction when the film 8 is pulled.
The edges of the guide rail bodies 71 on two sides of the narrow slits 72 are provided with rubber coatings, and the rubber coatings are used for protecting the film 8 and preventing the film 8 from being worn when being stretched.
The bottom side of the blind hole 74 is provided with a positioning groove 79 in the middle, and the positioning groove 79 is used for installing the reference positioning of the tapping screw 75.
When the prestress between the main components changes, the flexible steel wire rope can be adjusted through the wire grip, the prestress between the main components is corrected, the adjusting process is simple, the working efficiency is greatly improved, the stress adjusting result can be visually seen through the tension meter, and the adjustment is accurate.
According to the invention, the adjusting positioning hole on the adjusting positioning plate is provided with the long-hole structure, so that when the foundation bolt on the concrete pile deviates, the adjusting positioning plate can be rotated or moved, the installation of the adjusting positioning plate is not influenced, the reinforcing rib plates support the lug plates from two sides, the structural strength of the lug plates is improved, the groove of the positioning mark is arranged on the top of the lug plate, the subsequent positioning through a tool is facilitated, and the azimuth angle and the relative height of the adjusting positioning plate are confirmed.
The straddle disclosed by the invention adopts a double-layer structure, so that ground assembly and batch production are facilitated, the mounting efficiency is improved, and the mounting risk is reduced.
According to the invention, narrow slits are arranged at two ends of the 8-shaped guide rail body and are communicated with the respective guide holes to form a pull-off prevention guide rail structure with a large belly bag small outlet, two sides of the membrane are correspondingly inserted into the guide holes of the two adjacent guide rail bodies, the membrane is pulled to move from one end of the guide rail body to the other end of the guide rail body along the direction of the guide holes to complete membrane covering, high-altitude operation and rivets are not needed, the guide rail body is fixed on a steel structure plane truss only through self-tapping screws, the membrane covering efficiency is greatly improved, and the high-altitude operation risk is reduced.
The blind hole is arranged to reduce the dead weight of the guide rail body, the wall thickness of the tapping screw is reduced, the blind hole is convenient to install, the sealing strip is clamped on the blind hole to prevent the blind hole from being drenched by rain in rainy days, and the tapping screw is protected to prevent rusting.
The connection parts of the trusses are connected by flanges, the pre-tightening effect can be visually seen by using torsional shear bolts, the steel wire ropes are pre-tightened before delivery, the steel wire ropes can realize the pre-tightening force only by tightening the trusses without bending, the membranes are pulled through by guide rails without high-altitude rivets, and the construction and acceptance check are simpler and more convenient.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (2)
1. A supervision method for installation of a super-large span steel structure plane truss is characterized by comprising torsional shear stud detection, steel wire rope pre-tightening detection and film detection;
detecting a torsional shear stud: the torsional shear bolt with the prestress is determined by purchasing, the torsional shear bolt is used for fastening the connecting flange, when the preset prestress is achieved, the quincunx head of the torsional shear bolt falls off, whether the quincunx head exists in the torsional shear bolt is observed by naked eyes, if not, the pretension is in place, otherwise, the pretension is unqualified;
and (3) steel wire rope pre-tightening detection: the steel wire rope is pre-stressed and loaded in a factory, whether the steel wire rope is straightened or not is observed by naked eyes during field construction, the prestress is reached if the steel wire rope is straightened, and the prestress is not reached if the steel wire rope is not straightened;
and (3) membrane detection: the two sides of the inspection film are completely clamped into the grooves of the guide rails and are not separated, otherwise, the film is not installed in place.
2. The supervision method for the installation of the super-large span steel structure planar truss according to claim 1, wherein a wire tightener is arranged on the steel wire rope in the steel wire rope pre-tightening detection, and the steel wire rope is tightened and the pre-tightening force is adjusted through the wire tightener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111104629.7A CN113790760A (en) | 2021-09-18 | 2021-09-18 | Supervision method for installation of super-large-span steel structure planar truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111104629.7A CN113790760A (en) | 2021-09-18 | 2021-09-18 | Supervision method for installation of super-large-span steel structure planar truss |
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| Publication Number | Publication Date |
|---|---|
| CN113790760A true CN113790760A (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111104629.7A Pending CN113790760A (en) | 2021-09-18 | 2021-09-18 | Supervision method for installation of super-large-span steel structure planar truss |
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| Country | Link |
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| CN (1) | CN113790760A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201255166Y (en) * | 2008-09-03 | 2009-06-10 | 安徽长江紧固件有限责任公司 | Torsional shear type high-strength bolt for steel structure |
| CN106121268A (en) * | 2016-08-22 | 2016-11-16 | 东南大学 | The system and method for prestress rope integrative consolidation slab column |
| CN107165060A (en) * | 2017-04-07 | 2017-09-15 | 华侨大学 | A kind of anti-bend reinforced device of bridge prestress high-strength steel cord |
-
2021
- 2021-09-18 CN CN202111104629.7A patent/CN113790760A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201255166Y (en) * | 2008-09-03 | 2009-06-10 | 安徽长江紧固件有限责任公司 | Torsional shear type high-strength bolt for steel structure |
| CN106121268A (en) * | 2016-08-22 | 2016-11-16 | 东南大学 | The system and method for prestress rope integrative consolidation slab column |
| CN107165060A (en) * | 2017-04-07 | 2017-09-15 | 华侨大学 | A kind of anti-bend reinforced device of bridge prestress high-strength steel cord |
Non-Patent Citations (1)
| Title |
|---|
| 寇文革 ，李军: "广东医学院新校区体育场看台膜结构设计与施工", 《科技资讯》, pages 181 * |
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