CN114635506A - Prismatic steel pipe truss arch springing and mounting method thereof - Google Patents
Prismatic steel pipe truss arch springing and mounting method thereof Download PDFInfo
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- CN114635506A CN114635506A CN202210324329.8A CN202210324329A CN114635506A CN 114635506 A CN114635506 A CN 114635506A CN 202210324329 A CN202210324329 A CN 202210324329A CN 114635506 A CN114635506 A CN 114635506A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 65
- 239000010959 steel Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000004567 concrete Substances 0.000 claims abstract description 39
- 238000006243 chemical reaction Methods 0.000 claims description 27
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 13
- 238000004321 preservation Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 230000010354 integration Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000011900 installation process Methods 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 16
- 239000011150 reinforced concrete Substances 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
-
- 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
- E04G21/14—Conveying or assembling building elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a prismatic steel tube truss arch springing and an installation method thereof, belonging to the technical field of construction of steel structures of buildings. The method has the characteristics of high construction efficiency, good safety and reliability and short construction period. The problem that chord steel pipes of the prismatic steel pipe truss arch springing can be better and closely connected with concrete and jointly stressed is solved, the compactness of the concrete at the connecting part of the prismatic steel pipe truss arch springing and the reinforced concrete bearing platform is improved, and therefore the strength of the connecting structure is improved.
Description
Technical Field
The invention relates to the technical field of construction of a building steel structure, in particular to a prismatic steel pipe truss arch springing and an installation method thereof.
Background
With the rapid development of national economy and large-scale urbanization construction, the large-span prismatic steel pipe truss arch is a common steel structure in modern public construction projects such as large-scale venues and theaters. Because the prismatic steel pipe truss arch has large span, high height and complex stress of the structural system, two ends of the arch are fixedly connected with the prismatic steel pipe truss through the reinforced concrete bearing platform to form an integral stress system, and the prismatic steel pipe truss arch and the reinforced concrete bearing platform bear load together. However, how to integrate the prismatic steel pipe truss arch with the reinforced concrete bearing platform in the construction process to achieve the state of the design requirement is very important for the prismatic steel pipe truss arch.
Disclosure of Invention
The invention mainly solves the defects of low construction efficiency, poor safety and reliability and long construction period in the prior art, and provides the prismatic steel pipe truss arch springing and the installation method thereof, which have the characteristics of high construction efficiency, good safety and reliability and short construction period. The problem that chord steel pipes of the prismatic steel pipe truss arch springing can be better and closely connected with concrete and jointly stressed is solved, the compactness of the concrete at the connecting part of the prismatic steel pipe truss arch springing and the reinforced concrete bearing platform is improved, and therefore the strength of the connecting structure is improved.
The technical problem of the invention is mainly solved by the following technical scheme:
the prismatic steel pipe truss arch springing comprises a foundation, wherein a plurality of prismatic steel pipe trusses are arranged at the upper end of the foundation and are inclined at 20-50 degrees with the foundation, an arch springing pedestal for coating the prismatic steel pipe trusses is arranged on the periphery of the prismatic steel pipe trusses, and a bearing platform is arranged between the arch springing pedestal and the foundation.
Preferably, the prismatic steel pipe truss include a pair of hunch foot lower chord member and a pair of hunch foot upper chord member, hunch foot upper chord member be trapezoidal structure with hunch foot lower chord member and distribute, hunch foot upper chord member and hunch foot lower chord member lower extreme all be equipped with lower margin connection flange dish, lower margin connection flange dish on be equipped with a plurality of equidistant annular distribution and be the pre-buried lower margin crab-bolt that the integration was pour with the ground, hunch foot upper chord member and hunch foot lower chord member between upper portion, two hunch foot upper chord member between upper portion, two hunch foot lower chord member between upper portion all be equipped with a plurality of with hunch foot upper chord member, the conversion truss chord member that hunch foot lower chord member is linked together, be equipped with the crisscross conversion truss web member that distributes of "X" shape between upper and lower adjacent conversion truss chord member.
Preferably, a plurality of auxiliary truss web members which are positioned between the upper chord member and the lower chord member of the arch foot, between the upper chord members of the two arch feet and between the lower chord members of the two arch feet and are distributed in a diamond staggered manner are arranged below the chord member of the conversion truss, and auxiliary truss oxhorn are arranged between the auxiliary truss web members and the chord member of the conversion truss, between the auxiliary truss web members and the upper chord members of the arch feet and between the auxiliary truss web members and the lower chord members of the arch feet.
Preferably, the arch springing pedestal comprises an arch springing bottom platform, and the upper end of the arch springing bottom platform is provided with a truss arch springing outer-wrapping concrete seat which is wrapped with the periphery of the prismatic steel pipe truss.
The utility model provides an auxiliary jig frame, includes four pole settings that are the distribution of rectangular array, all is equipped with a plurality of jig frame connecting rods between two adjacent pole settings, is equipped with between upper and lower adjacent jig frame connecting rod to be integration welded jig frame web member with jig frame connecting rod, pole setting upper end be equipped with and be integration welded conversion platform with the pole setting.
The first step is as follows: leveling the ground, welding the lower ends of the upper chord member and the lower chord member of the arch foot according to the inclination angle to form a foundation, installing a pre-buried anchor bolt on the ground and pouring concrete to form the foundation.
The second step: and then, arranging auxiliary jig frames in the middle of the upper chord of the arch springing, in the middle of the lower chord of the arch springing and on the upper part of the lower chord of the arch springing, and processing the heights of all the auxiliary jig frames according to the requirements of the inclination angle.
The third step: and hoisting the upper chord member and the lower chord member of the arch foot, so that the anchor connecting flange plate and the embedded anchor bolt are fixedly installed by nuts, and then, welding and installing the chord member and the web member of the conversion truss.
The fourth step: and (4) dismantling the auxiliary jig frame in the middle of the upper chord of the arch springing, and then installing the web member of the auxiliary truss and the horn of the auxiliary truss.
The fifth step: and (3) pouring dense concrete C80 into the lower parts of the upper chord member and the lower chord member of the arch foot.
And a sixth step: and (5) binding reinforcing steel bars on the foundation and pouring a bearing platform by using concrete.
The seventh step: and then, pouring an arch foot bottom platform at the upper end of the bearing platform, and simultaneously filling dense concrete C80 into the arch foot upper chord member, the arch foot lower chord member and the conversion truss chord member.
Eighth step: and (5) dismantling the auxiliary jig frame exposed out of the upper end of the arch springing bottom platform.
The ninth step: the truss arch foot outer wrapping concrete seat is formed by binding steel bars and pouring concrete, and the installation process of the prismatic steel pipe truss arch foot is completed.
Preferably, the bearing platform is poured into the arch foot bottom platform and the truss arch foot outer-coated concrete seat in a grading manner, the surface of the concrete is covered with the film after the pouring is finished, and the film is liquefied when the air in the film is cooled at night, so that the effects of heat preservation and moisture preservation can be achieved.
The invention can achieve the following effects:
compared with the prior art, the prismatic steel pipe truss arch springing and the installation method thereof have the characteristics of high construction efficiency, good safety and reliability and short construction period. The problem that chord steel pipes of the prismatic steel pipe truss arch springing can be better and closely connected with concrete and jointly stressed is solved, the compactness of the concrete at the connecting part of the prismatic steel pipe truss arch springing and the reinforced concrete bearing platform is improved, and therefore the strength of the connecting structure is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a structural sectional view of the present invention.
Fig. 3 is a schematic structural view of the prismatic steel pipe truss of the present invention.
Fig. 4 is a schematic structural diagram of the arrangement auxiliary jig frame for installing the upper chord and the lower chord of the arch foot.
Fig. 5 is a schematic structural view illustrating an installation process of the prismatic steel pipe truss according to the present invention.
Fig. 6 is a schematic structural view of concrete poured on the lower portions of the upper chord member and the lower chord member of the arch foot according to the present invention.
Fig. 7 is a schematic structural view of the cap casting of the present invention.
Fig. 8 is a schematic structural view of the arch foot bottom platform pouring and the concrete pouring in the prismatic steel pipe truss of the invention.
Fig. 9 is a schematic structural view of the auxiliary jig frame of the present invention.
Fig. 10 is a schematic view of the construction of the truss foot concrete encased seat of the invention.
Fig. 11 is a schematic structural view of an auxiliary jig of the present invention.
In the figure: cushion cap 1, arch springing pedestal 2, prismatic steel pipe truss 3, foundation 4, lower margin connection flange 5, arch springing upper chord 6, auxiliary truss web member 7, auxiliary truss ox horn 8, conversion truss chord member 9, conversion truss web member 10, arch springing lower chord 11, embedded lower margin anchor bolt 12, auxiliary moulding bed 13, arch springing base 14, truss arch springing outer concrete seat 15, conversion platform 16, upright rod 17, moulding bed connecting rod 18 and moulding bed web member 19.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): as shown in fig. 1-3, a prismatic steel tube truss arch springing comprises a foundation 4, a pair of prismatic steel tube trusses 3 in mirror symmetry are arranged at the upper end of the foundation 4, the prismatic steel tube trusses 3 and the foundation 4 are inclined at 22 degrees, an arch springing pedestal 2 for coating the prismatic steel tube trusses 3 is arranged at the periphery of the prismatic steel tube trusses 3, the arch springing pedestal 2 comprises an arch springing bottom platform 14, and a truss arch springing outer-coating concrete seat 15 coated with the periphery of the prismatic steel tube trusses 3 is arranged at the upper end of the arch springing bottom platform 14. A bearing platform 1 is arranged between the arch springing pedestal 2 and the foundation 4.
The prismatic steel pipe truss 4 comprises a pair of arch foot lower chord members 11 and a pair of arch foot upper chord members 6, the arch foot upper chord members 6 and the arch foot lower chord members 11 are distributed in a trapezoidal structure, lower foot connecting flange plates 5 are arranged at the lower ends of the arch foot upper chord members 6 and the arch foot lower chord members 11, 16 embedded foot anchors 12 which are distributed in an equidistant annular mode and poured integrally with a foundation 4 are arranged on the foot connecting flange plates 5, 2 conversion truss chord members 9 communicated with the arch foot upper chord members 6 and the arch foot lower chord members 11 are arranged between the arch foot upper chord members 6 and the upper portions of the arch foot lower chord members 11, between the upper portions of the two arch foot upper chord members 6 and between the upper portions of the two arch foot lower chord members 11, and conversion truss web members 10 which are distributed in an X-shaped staggered mode are arranged between the upper and the lower adjacent conversion truss chord members 9. 28 auxiliary truss web members 7 which are positioned between the upper chord member 6 of the arch foot and the lower chord member 11 of the arch foot, between the upper chord members 6 of the two arch feet and between the lower chord members 11 of the two arch feet and are distributed in a diamond-shaped staggered manner are arranged below the conversion truss chord member 9, and auxiliary truss oxhorn 8 are arranged between the auxiliary truss web members 7 and the conversion truss chord member 9, between the auxiliary truss web members 7 and the upper chord member 6 of the arch foot, and between the auxiliary truss web members 7 and the lower chord member 11 of the arch foot.
As shown in fig. 11, an auxiliary jig frame includes four upright posts 17 distributed in a rectangular array, 7 jig frame connecting rods 18 are respectively disposed between two adjacent upright posts 17, a jig frame web member 19 integrally welded to the jig frame connecting rods 18 and the upright posts 17 is disposed between the upper and lower adjacent jig frame connecting rods 18, and a conversion platform 16 integrally welded to the upright posts 17 is disposed at the upper ends of the upright posts 17.
As shown in fig. 4-10, a method for installing a prismatic steel pipe truss arch springing comprises the following steps:
the first step is as follows: firstly, leveling the ground, welding the lower ends of the upper chord 6 and the lower chord 11 of the arch foot with the anchor connecting flange 5 according to the inclination angle, installing the embedded anchor bolts 12 on the ground and pouring concrete to form the foundation 4.
The second step is that: and then, arranging auxiliary jig frames 13 in the middle of the arch springing upper chord 6, the middle of the arch springing lower chord 11 and the upper part of the arch springing lower chord 11, and processing the heights of the auxiliary jig frames 13 according to the requirements of the inclination angle.
The third step: and hoisting the upper chord 6 and the lower chord 11 of the arch springing to enable the anchor connecting flange 5 and the embedded anchor bolts 12 to be fixed by nuts, and then welding and installing the chord 9 and the web 10 of the conversion truss.
The fourth step: and (3) removing the auxiliary jig frame 13 in the middle of the upper chord 6 of the arch foot, and then installing the auxiliary truss web member 7 and the auxiliary truss horn 8.
The fifth step: and (3) pouring dense concrete C80 into the lower parts of the upper chord 6 and the lower chord 11 of the arch foot.
And a sixth step: and (4) binding reinforcing steel bars on the foundation 4 and pouring the bearing platform 1 by using concrete.
The seventh step: and then, pouring an arch springing bottom platform 14 at the upper end of the bearing platform 1, and simultaneously filling dense concrete C80 into the arch springing upper chord member 6, the arch springing lower chord member 11 and the transfer truss chord member 9.
Eighth step: the auxiliary jig frame 13 exposing the upper end of the arch foot bed 14 is removed.
The ninth step: the truss arch foot outer-wrapped concrete seat 15 is formed by binding steel bars and pouring concrete, and the installation process of the prismatic steel pipe truss arch foot is completed.
The bearing platform 1 is poured into the arch foot bottom platform 14 and the truss arch foot outer-coated concrete seat 15 in a grading manner, a film is covered on the surface of concrete after the pouring is finished in the grading manner, and the film is liquefied by air in the film when the film is cooled at night, so that the effects of heat preservation and moisture preservation can be achieved.
In conclusion, the prismatic steel pipe truss arch springing and the installation method thereof have the characteristics of high construction efficiency, good safety and reliability and short construction period. The problem that chord steel pipes of the prismatic steel pipe truss arch springing can be better and closely connected with concrete and jointly stressed is solved, the compactness of the concrete at the connecting part of the prismatic steel pipe truss arch springing and the reinforced concrete bearing platform is improved, and therefore the strength of the connecting structure is improved.
The above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.
Claims (7)
1. A prismatic steel pipe truss arch springing is characterized in that: the steel tube truss foundation structure is characterized by comprising a foundation (4), wherein a plurality of prismatic steel tube trusses (3) are arranged at the upper end of the foundation (4), the prismatic steel tube trusses (3) and the foundation (4) are inclined by 20-50 degrees, an arch foot pedestal (2) for coating the prismatic steel tube trusses (3) is arranged on the periphery of the prismatic steel tube trusses (3), and a bearing platform (1) is arranged between the arch foot pedestal (2) and the foundation (4).
2. A prismatic steel tube truss arch according to claim 1, wherein: the prismatic steel pipe truss (4) comprises a pair of arch foot lower chords (11) and a pair of arch foot upper chords (6), the upper chord (6) and the lower chord (11) of the arch foot are distributed in a trapezoidal structure, the lower ends of the upper chord (6) and the lower chord (11) of the arch foot are both provided with a foot margin connecting flange (5), a plurality of embedded anchor bolts (12) which are distributed annularly at equal intervals and cast integrally with the foundation (4) are arranged on the anchor connecting flange plate (5), a plurality of conversion truss chords (9) communicated with the arch foot upper chord (6) and the arch foot lower chord (11) are arranged between the upper parts of the arch foot upper chord (6) and the arch foot lower chord (11), between the upper parts of the two arch foot upper chords (6) and between the upper parts of the two arch foot lower chords (11), and conversion truss web members (10) which are in X-shaped staggered distribution are arranged between the upper and lower adjacent conversion truss chords (9).
3. A prismatic steel tube truss arch according to claim 2, wherein: conversion truss chord member (9) below be equipped with a plurality of be located between hunch foot upper chord member (6) and hunch foot lower chord member (11), between two hunch foot upper chord member (6), between two hunch foot lower chord member (11) and be supplementary truss web member (7) of the crisscross distribution of rhombus, supplementary truss web member (7) and conversion truss chord member (9) between, between supplementary truss web member (7) and hunch foot upper chord member (6), all be equipped with supplementary truss ox horn (8) between supplementary truss web member (7) and hunch foot lower chord member (11).
4. A prismatic steel tube truss arch according to claim 1, wherein: the arch springing pedestal (2) comprises an arch springing base (14), and a truss arch springing outer-coated concrete seat (15) coated with the periphery of the prismatic steel pipe truss (3) is arranged at the upper end of the arch springing base (14).
5. An auxiliary jig frame is characterized in that: including four pole settings (17) that are the distribution of rectangle array, all be equipped with a plurality of bed-jig connecting rods (18) between two adjacent pole settings (17), be equipped with between upper and lower adjacent bed-jig connecting rod (18) and be integration welded bed-jig web member (19) with bed-jig connecting rod (18), pole setting (17) upper end be equipped with and be integration welded conversion platform (16) with pole setting (17).
6. A method for installing an arch springing of a prismatic steel pipe truss is characterized by comprising the following operation steps:
the first step is as follows: leveling the ground, welding the lower ends of the upper chord member (6) and the lower chord member (11) of the arch foot with a foot connecting flange (5) according to the inclination angle, installing a pre-buried foot anchor bolt (12) on the ground and pouring concrete to form a foundation (4);
the second step is that: then, auxiliary jig frames (13) are arranged in the middle of the upper arch foot chord (6), in the middle of the lower arch foot chord (11) and at the upper part of the lower arch foot chord (11), and the heights of all the auxiliary jig frames (13) are processed according to the requirements of the inclination angle;
the third step: hoisting an arch foot upper chord member (6) and an arch foot lower chord member (11) to enable a foundation connecting flange plate (5) and an embedded foundation anchor bolt (12) to be installed and fixed through nuts, and then welding and installing a conversion truss chord member (9) and a conversion truss web member (10);
the fourth step: dismantling an auxiliary jig frame (13) in the middle of the upper chord (6) of the arch foot, and then installing an auxiliary truss web member (7) and an auxiliary truss horn (8);
the fifth step: the lower parts of the upper chord (6) and the lower chord (11) of the arch foot are both poured with dense concrete C80;
and a sixth step: binding reinforcing steel bars on the foundation (4) and pouring concrete on the bearing platform (1);
the seventh step: then, an arch foot bottom platform (14) is poured at the upper end of the bearing platform (1), and simultaneously the arch foot upper chord member (6), the arch foot lower chord member (11) and the conversion truss chord member (9) are filled with dense concrete C80;
eighth step: the auxiliary jig frame (13) exposed out of the upper end of the arch springing bottom platform (14) is removed;
the ninth step: the truss arch foot outer-wrapped concrete seat (15) is formed by binding steel bars and pouring concrete, and the installation process of the prismatic steel pipe truss arch foot is completed.
7. A prismatic steel tube truss arch springing as recited in claim 6, wherein: the bearing platform (1) is poured into the arch foot bottom platform (14) and the truss arch foot outer-coated concrete seat (15) in a grading manner, a film is covered on the surface of concrete after the pouring is finished, and the film is liquefied by air in the film when the film is cooled at night, so that the effects of heat preservation and moisture preservation can be achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210324329.8A CN114635506A (en) | 2022-03-30 | 2022-03-30 | Prismatic steel pipe truss arch springing and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210324329.8A CN114635506A (en) | 2022-03-30 | 2022-03-30 | Prismatic steel pipe truss arch springing and mounting method thereof |
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| CN114635506A true CN114635506A (en) | 2022-06-17 |
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| JPH07300817A (en) * | 1994-05-09 | 1995-11-14 | Nippon Steel Corp | Concrete-filled steel pipe truss pier and construction method |
| CN205205680U (en) * | 2015-12-14 | 2016-05-04 | 广西路建工程集团有限公司 | Cast -in -place arched bridge member formula support steel arc distribution beam construction |
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| CN110747751A (en) * | 2019-11-21 | 2020-02-04 | 中铁二局集团有限公司 | Connecting device for special-shaped steel arch rib and steel box girder and mounting method thereof |
| CN111188281A (en) * | 2020-02-29 | 2020-05-22 | 中建三局第二建设工程有限责任公司 | Transverse moving support system for prefabricated beam frame facility working machinery and construction method |
| CN111305046A (en) * | 2020-04-01 | 2020-06-19 | 中铁二院工程集团有限责任公司 | Connecting structure of hingeless steel truss arch and arch support and construction method thereof |
| CN111364368A (en) * | 2020-03-31 | 2020-07-03 | 中铁大桥科学研究院有限公司 | Arch foot restraint device and method for steel pipe arch rib inclined pull buckle hanging and splicing construction |
| CN112195750A (en) * | 2020-09-16 | 2021-01-08 | 长江勘测规划设计研究有限责任公司 | Structure for preventing concrete from cracking outside steel tube of arch leg steel tube of concrete filled steel tube arch bridge |
| CN214575977U (en) * | 2021-01-18 | 2021-11-02 | 中铁建工集团有限公司 | Lattice type supporting jig frame |
| CN113802880A (en) * | 2021-08-16 | 2021-12-17 | 中国一冶集团有限公司 | Combined supporting structure for mounting large-span steel beam |
| CN114214917A (en) * | 2021-12-29 | 2022-03-22 | 德州市公路工程总公司 | Steel pipe concrete tied arch bridge and construction method |
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2022
- 2022-03-30 CN CN202210324329.8A patent/CN114635506A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07300817A (en) * | 1994-05-09 | 1995-11-14 | Nippon Steel Corp | Concrete-filled steel pipe truss pier and construction method |
| CN205205680U (en) * | 2015-12-14 | 2016-05-04 | 广西路建工程集团有限公司 | Cast -in -place arched bridge member formula support steel arc distribution beam construction |
| CN205775852U (en) * | 2016-05-16 | 2016-12-07 | 中国建筑第二工程局有限公司 | Acting force conversion support for top of steel structure supporting jig frame |
| CN109914260A (en) * | 2019-04-09 | 2019-06-21 | 中铁十八局集团第二工程有限公司 | Four, double ribs encircle vaulted beam method without steel truss is twisted |
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| CN111188281A (en) * | 2020-02-29 | 2020-05-22 | 中建三局第二建设工程有限责任公司 | Transverse moving support system for prefabricated beam frame facility working machinery and construction method |
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| CN214575977U (en) * | 2021-01-18 | 2021-11-02 | 中铁建工集团有限公司 | Lattice type supporting jig frame |
| CN113802880A (en) * | 2021-08-16 | 2021-12-17 | 中国一冶集团有限公司 | Combined supporting structure for mounting large-span steel beam |
| CN114214917A (en) * | 2021-12-29 | 2022-03-22 | 德州市公路工程总公司 | Steel pipe concrete tied arch bridge and construction method |
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Application publication date: 20220617 |