CN111893860B - Reinforced Bailey sheet steel arch center connecting structure and assembling and connecting method thereof - Google Patents
Reinforced Bailey sheet steel arch center connecting structure and assembling and connecting method thereof Download PDFInfo
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- CN111893860B CN111893860B CN202010632213.1A CN202010632213A CN111893860B CN 111893860 B CN111893860 B CN 111893860B CN 202010632213 A CN202010632213 A CN 202010632213A CN 111893860 B CN111893860 B CN 111893860B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D6/00—Truss-type bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a reinforced Bailey sheet steel arch connecting structure and an assembling and connecting method thereof. This structure can make strenghthened type bailey steel bow member simple to operate and mounted position precision easily control, is applicable to and assembles the connection to the strenghthened type bailey arch support frame that the bearing capacity required is higher.
Description
Technical Field
The invention relates to the technical field of cast-in-place reinforced concrete arch bridge Bailey sheet steel arch frames, in particular to a reinforced Bailey sheet steel arch frame connecting structure and an assembling and connecting method thereof.
Background
The reinforced concrete arch bridge has the characteristics of low manufacturing cost, good durability and the like, is widely used, is particularly suitable for building in high mountains and gorges, and has the characteristics of high construction speed, easy control of the quality of arch ring concrete and the like as a common construction method of the reinforced concrete arch bridge by using a steel arch cast-in-place arch bridge construction technology. The steel arch frame has more structural types, and the reusable Bailey sheets are often selected and assembled into the arch in the engineering. Because each piece of the rectangular truss with the size of 3m multiplied by 1.5m does not conform to the shape of an arc or a catenary of an arch ring of an arch bridge, the truss can only be installed in the form of a line, and then a plurality of straight lines are fitted into an arch curve in the form of broken lines. For a common Bailey sheet steel arch frame, a broken line arch is formed in a good fit mode, only a rod piece with adjustable length needs to be added at the upper chord positions of two Bailey sheets, however, the common Bailey sheet steel arch frame needs to be provided with a plurality of steel arch frames to bear large load, Bailey sheets need to be used in a large amount, and the Bailey sheet steel arch frame structure is too heavy. If reinforced bailey pieces are selected to be assembled into an arch, under the condition of bearing the same load, the required amount of bailey pieces can be reduced, the weight of the steel arch structure can be reduced, but for the steel arch formed by the reinforced bailey pieces, the arch can not be assembled by the method, the connecting section of the bailey piece steel arch needs to be redesigned, and in addition, the reasonable arch foot connecting section structure is designed, so that the assembly of the steel arch can be facilitated, and the mounting position precision of the bailey piece steel arch can be ensured to be controllable.
Disclosure of Invention
The invention aims to solve the technical problem of providing a reinforced Bailey sheet steel arch connecting structure and an assembling and connecting method thereof, which can ensure that the reinforced Bailey steel arch is convenient to install and easy to control the precision of the installation position, and are suitable for assembling and connecting reinforced Bailey arch support frames with higher requirements on bearing capacity.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a strenghthened type bailey piece steel bow member connection structure, strenghthened type bailey piece steel bow member include a plurality of sections of assembling, assemble the festival and connect by a plurality of strenghthened type bailey pieces and constitute, are equipped with the built-in fitting in the abutment concrete, and the section of assembling of tip is connected through connecting hunch foot section and built-in fitting, assembles and connects through the linkage segment between the festival.
In a preferred scheme, the connecting section comprises an upper connecting frame and a lower connecting frame, the upper connecting frame and the lower connecting frame are connected through a connecting rod, and the length of the upper connecting frame is greater than that of the lower connecting frame.
In the preferred scheme, the one end of going up link and link down all is equipped with connects the male head, and the other end all is equipped with connects the female head, connects the male head and connects female head and rather than adjacent strenghthened type bailey piece and pass through pin joint.
In a preferable scheme, the reinforced Bailey steel arch frame is provided with a plurality of trusses, and the trusses are connected through flower stands.
In the preferred scheme, the connecting arch foot section comprises a plurality of fixedly connected arch foot sections and hinged arch foot sections, the upper ends of the hinged arch foot sections are connected with the reinforced bailey pieces on the assembling sections of the end parts, the lower ends of the hinged arch foot sections are connected with hinged seats arranged on the embedded parts through hinge pins, the upper ends of the fixedly connected arch foot sections are connected with the reinforced bailey pieces on the assembling sections of the end parts, and the lower ends of the fixedly connected arch foot sections are fixedly connected with the embedded parts.
In a further scheme, the diameter of the shaft hole in the hinged support is larger than that of the pin shaft.
In a further scheme, the hinged arch leg section comprises a first chord and a hinged head connected with the first chord, the hinged head is hinged with a hinged support through a pin, the hinged arch leg section comprises two second chords, and a reinforcing rod is arranged between the second chords.
An assembling and connecting method of a reinforced Bailey sheet steel arch center connecting structure comprises the following steps:
firstly, processing and manufacturing an embedded part, installing and fixing the embedded part according to a designed position, and pouring abutment concrete;
step two, after the concrete of the arch support is solidified, welding the hinged support to the embedded part;
thirdly, assembling the assembled sections at the end parts, connecting the assembled sections at the end parts with the connecting arch foot sections after assembling, connecting the hinged arch foot sections with the hinged seats through pin shafts, and performing spot welding connection on the fixedly connected arch foot sections and the embedded parts;
step four, assembling and splicing the second assembling joint, wherein a connecting section is arranged at the end part of the second assembling joint, and the connecting section is connected with the assembling joint at the end part;
fifthly, mounting other splicing sections in sequence from left to right until the splicing sections are finally closed;
and step six, welding and reinforcing the hinged arch leg sections, the fixed connection arch leg sections and the embedded parts.
In a preferred scheme, when the closure is performed in the fifth step, after the on-site actual size measurement is performed, the connecting male head of the connecting section is connected with the connecting section, and the connecting male head is connected with the adjacent splicing section.
The invention provides a reinforced Bailey sheet steel arch center connecting structure and an assembling and connecting method thereof, which have the following beneficial effects:
1. through the connecting section that sets up the trapezium structure, realize becoming arc or catenary shape with strenghthened type bailey bow member fitting, make strenghthened type bailey piece fitting into arc steel bow member become reality, can give full play to strenghthened type bailey piece structural mechanical properties, alleviateed steel bow member structure weight itself for the steel bow member is assembled into and is encircleed speed.
2. The arch leg sections are hinged, so that the first section assembly section can be conveniently installed and adjusted, and the accuracy of the installation position is easy to control.
3. When the closure is carried out, the connecting male head of the connecting section is not connected with the upper connecting frame or the lower connecting frame firstly, after the field actual dimension is measured, the connecting male head of the connecting section is welded with the connecting section on the field, and the connecting male head is connected with the adjacent splicing joint, so that the problem that pin joint holes cannot be butted due to installation errors of the closure section of the cantilever splicing Bailey steel arch frame is solved, and the closure section of the Bailey steel arch frame can be smoothly closed.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic structural view of a connection structure of the present invention;
FIG. 2 is a connection structure diagram between reinforced Bailey steel arch trusses;
FIG. 3 is a view of the hinge joint arch leg segment and the reinforced Bailey sheet connection structure;
FIG. 4 is a connection structure diagram of a fixed connection arch leg section and a reinforced Bailey sheet;
FIG. 5 is a schematic view of the connection segment to the reinforced Bailey piece;
FIG. 6 is a top view of the connecting segment;
fig. 7 is a schematic connection diagram of the connection section at the closure position and the reinforced bailey piece;
in the figure: the reinforced Bailey sheet comprises a reinforced Bailey sheet 1, arch center concrete 2, embedded parts 3, a connecting section 4, a flower stand 5, a fixedly connected arch foot section 6, a hinged arch foot section 7, a hinged seat 8, an upper connecting frame 401, a lower connecting frame 402, a connecting rod 403, a connecting male head 404, a connecting female head 405, a second chord 601, a reinforcing rod 602, a first chord 701 and a hinged joint 702.
Detailed Description
As shown in fig. 1, a strenghthened type bailey piece steel bow member linkage, strenghthened type bailey piece steel bow member includes a plurality of sections of assembling, assemble the section and connect by a plurality of strenghthened type bailey pieces 1 and constitute, be equipped with built-in fitting 3 in the archway concrete 2, built-in fitting 3 comprises steel sheet and with steel sheet welded connection's claw muscle, it is upper, low reaches or left, the built-in fitting 3 on the archway of right bank buries the position as far as possible on same axis position underground, guarantee later stage bailey bow member and assemble on same axis, the section of assembling of tip is connected with built-in fitting 3 through connecting the round foot section, assemble and connect through linkage 4 between the section.
The connection section 4 comprises an upper connection frame 401 and a lower connection frame 402, the upper connection frame 401 and the lower connection frame 402 are connected through a connection rod 403, and the length of the upper connection frame 401 is greater than that of the lower connection frame 402. The connecting sections 4 are in a trapezoidal structure, and the reinforced bailey arch frames are fitted into an arc shape or a catenary shape by adjusting the number of the connecting sections 4 and the lengths of the upper connecting frame 401 and the lower connecting frame 402.
As shown in fig. 6, one end of each of the upper connecting frame 401 and the lower connecting frame 402 is provided with a connecting male head 404, the other end of each of the upper connecting frame and the lower connecting frame is provided with a connecting female head 405, and the connecting male heads 404 and the connecting female heads 405 are connected with the reinforced bailey pieces 1 adjacent thereto by pins. The connection with the reinforced Bailey sheet 1 is convenient.
The reinforced Bailey steel arch frame is provided with a plurality of trusses, and the trusses are connected through flower stands 5. In the present embodiment, ten reinforced beret arches are designed, and as shown in fig. 2, the trusses are connected to each other by a flower shelf 5.
Preferably, the connection arch foot section comprises a plurality of fixedly connected arch foot sections 6 and a plurality of hinged arch foot sections 7, the upper ends of the hinged arch foot sections 7 are connected with the reinforced Bailey pieces 1 on the assembly joints of the end parts, the lower ends of the hinged arch foot sections are connected with the hinged seats 8 on the embedded parts 3 through hinge pins, the upper ends of the fixedly connected arch foot sections 6 are connected with the reinforced Bailey pieces 1 on the assembly joints of the end parts, and the lower ends of the fixedly connected arch foot sections are fixedly connected with the embedded parts 3.
Further, the diameter of the shaft hole in the hinged support 8 is larger than that of the pin shaft. The diameter of the shaft hole on the hinged support 8 is about 4mm larger than the diameter of the pin shaft, so that the hinged arch foot section 7 can rotate along the pin shaft and can move up and down or left and right at a small distance. The structure enables the installation of the first-section Bailey sheet steel arch to be easier, and after the angle of the first-section Bailey sheet steel arch is adjusted to a design position through the buckling cables and the left and right positions of the arch base through the jacks, the arch leg sections 6 and the embedded parts 3 are temporarily and fixedly connected in a spot welding mode.
Specifically, the hinged leg arch section 7 includes a first chord 701 and a hinge 702 connected to the first chord 701, the hinge 702 is hinged to the hinge base 8 through a pin, the hinged leg arch section 6 includes two second chords 601, and a reinforcing rod 602 is disposed between the second chords 601.
An assembling and connecting method of a reinforced Bailey sheet steel arch center connecting section structure comprises the following steps:
the method comprises the steps of firstly, machining and manufacturing an embedded part 3, installing and fixing the embedded part 3 according to a designed position, pouring abutment concrete 2, ensuring that the position of the embedded part 3 is fixed as much as possible in the abutment concrete pouring process, ensuring that the position of the embedded part is compact in attachment concrete vibration, ensuring that the size of the embedded part 3 can ensure that the end faces of a second chord 601 fixedly connected with an arch foot section 6 and a hinge base 8 can be completely welded on the surfaces of the embedded part, ensuring that the embedded parts 3 on the arch abutments of the upper and lower reaches or the left and right banks are embedded at the same axial position as much as possible, and ensuring that the Bailey arch centering is assembled on the same axial line in the later period.
And step two, after the abutment concrete 2 is solidified, welding the hinged support 8 to the embedded part 3, wherein the consolidation position of the hinged support 3 must be accurate enough, otherwise, the overlapping length of the connection section 4 at the closure position in the later period and the deviation of the Bailey arch centering on the upstream and downstream or the left and right banks on the arch axis are influenced.
And step three, assembling the assembled sections at the end parts, designing steel arch frames with proper number of steel frames according to the later-stage load bearing capacity of the reinforced Bailey steel arch frames, connecting the assembled sections at the end parts with connecting arch leg sections after assembling is completed, wherein in the embodiment, the end parts of the reinforced steel arch frames of the two middle steel frames are provided with hinged arch leg sections 7, the hinged arch leg sections 7 are connected with hinged bases 8 through hinge pins, the other eight steel frames are connected with the arch bases through fixedly connecting arch leg sections 6, and the fixedly connecting arch leg sections 6 are connected with the embedded parts 3 in a spot welding mode.
And fourthly, assembling and splicing the second assembled section, wherein the end part of the second assembled section is provided with a connecting section 4, the connecting section 4 is connected with the assembled section at the end part, the hole alignment is difficult when the high-altitude middle connecting section 4 is in pin joint with the assembled section at the end part through a pin shaft, particularly the number of holes required to be butted by a plurality of steel arch frames is large, the processing mode is that when the end part of the second assembled section is provided with the connecting section 4, only the connecting sections 4 at two sides of the plurality of steel arch frames are installed, the connecting section 4 is connected with the assembled section at the end part through integral hoisting of a cable crane, the steel arch frames at two sides are connected, the buckling cables of the second assembled section are buckled and released, and the pin joint of the residual steel arch frame connecting section 4 of the second assembled section and the assembled section at the end part is sequentially completed through adjusting the buckling cable force of the second assembled section.
And fifthly, sequentially installing other assembling sections from left to right until the final closure. Because different arcs or catenary arch curves need to be fitted, the structural dimension of the connecting section 4 between each assembled section may be different, namely the length dimension of the upper connecting frame 401 and the length dimension of the lower connecting frame 402 can be different, but the structural types are the same, and only the upper and lower four pin holes of the reinforced Bailey piece 1 between two assembled sections need to be smoothly connected with the shaft hole of the connecting section 4 through the pin shaft. And analogizing in turn, successively completing the pin connection installation of the connecting sections 4 between the assembled sections until the last closing, wherein during closing, the connecting male head 404 of the connecting section 4 is not connected with the upper connecting frame 401 or the lower connecting frame 402 firstly, after the field actual size measurement is carried out, the connecting male head 404 of the connecting section 4 is welded with the connecting section 4 on the field, and the connecting male head 404 is connected with the assembled sections adjacent to the connecting male head 404, so that the phenomenon that the reinforced Bailey steel arch frame cannot be closed at last due to installation precision errors is avoided.
And step six, welding and reinforcing the hinged arch leg sections 7, the fixed connection arch leg sections 6 and the embedded parts 3.
Claims (8)
1. The utility model provides a strenghthened type bailey piece steel bow member connection structure which characterized in that: strenghthened type bailey piece steel bow member includes a plurality of sections of assembling, assembles the festival and connects by a plurality of strenghthened type bailey pieces (1) and constitute, is equipped with built-in fitting (3) in hunch seat concrete (2), and the section of assembling of tip is connected through connecting hunch foot section and built-in fitting (3), assembles and connects through linkage segment (4) between the festival, linkage segment (4) include link (401) and lower link (402), go up link (401) and link (402) down and connect through connecting rod (403), and the length of going up link (401) is greater than the length of link (402) down.
2. The reinforced Bailey steel arch connecting structure of claim 1, wherein: go up link (401) and the one end of lower link (402) all is equipped with connects male (404), and the other end all is equipped with connects female (405), connects male (404) and connects female (405) and pass through pin joint rather than adjacent strenghthened type bailey piece (1).
3. The reinforced Bailey steel arch connecting structure of claim 1, wherein: the reinforced Bailey steel arch frame is provided with a plurality of trusses, and the trusses are connected through flower stands (5).
4. The reinforced Bailey steel arch connecting structure of claim 1, wherein: the connecting arch leg section comprises a plurality of fixedly connected arch leg sections (6) and hinged arch leg sections (7), the upper ends of the hinged arch leg sections (7) are connected with reinforced Bailey pieces (1) on the assembling sections of the end parts, the lower ends of the hinged arch leg sections are connected with hinged seats (8) arranged on the embedded parts (3) through hinge pins, the upper ends of the fixedly connected arch leg sections (6) are connected with the reinforced Bailey pieces (1) on the assembling sections of the end parts, and the lower ends of the fixedly connected arch leg sections are fixedly connected with the embedded parts (3).
5. The reinforced Bailey steel arch connecting structure of claim 4, wherein: the diameter of the shaft hole on the hinged support (8) is larger than that of the pin shaft.
6. The reinforced Bailey steel arch connecting structure of claim 4, wherein: the hinged arch foot section (7) comprises a first chord member (701) and a hinged head (702) connected with the first chord member (701), the hinged head (702) is hinged with a hinged support (8) through a pin, the hinged arch foot section (6) comprises two second chord members (601), and a reinforcing rod (602) is arranged between the second chord members (601).
7. The splicing and connecting method of the reinforced Bailey sheet steel arch center connecting structure according to any one of claims 1 to 6, characterized by comprising the following steps:
firstly, processing and manufacturing an embedded part (3), installing and fixing the embedded part (3) according to a designed position, and pouring arch center concrete (2);
secondly, after the arch support concrete (2) is solidified, welding the hinged support (8) to the embedded part (3);
thirdly, assembling the assembled sections at the end parts, connecting the assembled sections at the end parts with the connecting arch foot sections after assembling, connecting the hinged arch foot sections (7) with the hinged seats (8) through pin shafts, and connecting the fixedly connected arch foot sections (6) with the embedded parts (3) in a spot welding manner;
fourthly, assembling a second assembling joint, mounting a connecting section (4) at the end part of the second assembling joint, and connecting the connecting section (4) with the assembling joint at the end part;
fifthly, mounting other splicing sections in sequence from left to right until the splicing sections are finally closed;
and sixthly, welding and reinforcing the hinged arch leg sections (7), the fixedly connected arch leg sections (6) and the embedded parts (3).
8. The splicing and connecting method of the reinforced Bailey steel arch center connecting structure according to claim 7, wherein in the fifth step, after the field actual size measurement is carried out during the closure, the connecting male head (404) of the connecting section (4) is connected with the connecting section (4), and the connecting male head (404) is connected with the splicing joint adjacent to the connecting male head.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010632213.1A CN111893860B (en) | 2020-07-03 | 2020-07-03 | Reinforced Bailey sheet steel arch center connecting structure and assembling and connecting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010632213.1A CN111893860B (en) | 2020-07-03 | 2020-07-03 | Reinforced Bailey sheet steel arch center connecting structure and assembling and connecting method thereof |
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| CN111893860A CN111893860A (en) | 2020-11-06 |
| CN111893860B true CN111893860B (en) | 2022-03-08 |
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| CN111620631B (en) * | 2020-06-30 | 2021-11-30 | 中国葛洲坝集团路桥工程有限公司 | Recycled aggregate mixture and application thereof |
| CN113059327A (en) * | 2021-04-07 | 2021-07-02 | 镇江金豪路桥配套工程有限公司 | Production process of Bailey sheet for assembled Bailey steel bridge |
| CN113699866B (en) * | 2021-09-10 | 2022-12-02 | 中国十九冶集团有限公司 | Large-span cast-in-place concrete arch bridge support-free construction method |
| CN113737631A (en) * | 2021-09-23 | 2021-12-03 | 中交二公局第三工程有限公司 | Transverse turning connection structure of Bailey steel trestle |
| CN114808658B (en) * | 2022-05-20 | 2024-03-19 | 泰兴市聚峰压延科技有限公司 | Connection structure of arc bridge bailey beam and construction method |
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| JPH0274707A (en) * | 1988-09-09 | 1990-03-14 | Oriental Concrete Kk | Rising construction device of half-arch for arch bridge |
| JPH0355306A (en) * | 1989-06-27 | 1991-03-11 | Okabe Co Ltd | Construction work of arch-type frame timbering |
| JPH09217321A (en) * | 1996-02-09 | 1997-08-19 | Okabe Co Ltd | Arch concrete work execution method |
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