CN111877126B - Method for installing arch ring of arch bridge - Google Patents
Method for installing arch ring of arch bridge Download PDFInfo
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- CN111877126B CN111877126B CN202010875884.0A CN202010875884A CN111877126B CN 111877126 B CN111877126 B CN 111877126B CN 202010875884 A CN202010875884 A CN 202010875884A CN 111877126 B CN111877126 B CN 111877126B
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- arch
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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
Abstract
The application provides an installation method of an arch bridge arch ring, which comprises the following steps: the method comprises the following steps: 1) constructing a bearing platform and an arch support; 2) installing an arch ring support; the arch ring support comprises a plurality of arch trusses and fixed supports supported at two ends of the arch trusses, and the fixed supports are fixed on the bearing platform; 3) erecting a plurality of first distribution beams on the upper parts of the arch trusses along the longitudinal bridge direction, and erecting bottom moulds on the first distribution beams; 4) erecting a steel bar structure of an arch ring on the upper part of a bottom die, and then erecting a side die and a top die; 5) finishing the concrete pouring of the arch ring; 6) and disassembling the arch ring support. The construction safety and the construction quality of the arch ring are guaranteed in the application.
Description
Technical Field
The application relates to the technical field of arch bridge construction, in particular to an installation method of an arch ring of an arch bridge.
Background
With the high-speed development of modern economy, the development of high-speed railways and highways also enters a rapid development stage, bridges are built more and more, and arch bridges have the advantages of simple structure, clear stress, various forms, attractive appearance and the like, and are applied more and more widely to the high-speed railways and the highways.
For the bridge type of the continuous arch bridge, when the arch ring is constructed in a single span, the arch foot of the arch ring can apply horizontal thrust to the arch base, so that the stress of the arch base is easy to be unbalanced, and the construction safety and the construction quality of the arch ring are difficult to ensure.
Disclosure of Invention
The application aims to provide a method for installing an arch ring of an arch bridge with safe construction.
In order to achieve the above object, the present application provides the following technical solutions:
an installation method of an arch ring of an arch bridge is characterized in that: the method comprises the following steps:
1) constructing a bearing platform and an arch support; firstly, constructing a bearing platform, and then constructing an arch support on the bearing platform;
2) installing an arch ring support; the arch ring support comprises a plurality of arch trusses and fixed supports supported at two ends of the arch trusses, the fixed supports are fixed on a bearing platform, the arch trusses are respectively and independently integrally hoisted, two ends of the arch trusses are respectively fixed on the fixed supports positioned at two ends of the arch trusses, and the arch trusses are distributed along the transverse bridge direction;
3) erecting a plurality of first distribution beams on the upper parts of the plurality of arch trusses along a longitudinal bridge direction, wherein the first distribution beams are arranged along a direction parallel to a transverse bridge direction, and a bottom die of an arch ring is erected on the first distribution beams;
4) erecting a steel bar structure of an arch ring between two adjacent arch seats and on the upper part of the bottom die, and then erecting a side die of the arch ring and a top die of the arch ring;
5) concrete pouring of the arch ring is completed;
6) and disassembling the arch ring support.
Preferably, the side surface of the fixed support is fixedly connected with a first steel plate pre-embedded in the middle of the side surface of the arch support.
Preferably, the end part of the arched truss is fixedly connected with a second steel plate pre-embedded at the upper part of the side surface of the arch support.
Preferably, a plurality of fixed supports are arranged along the transverse bridge direction, a bearing beam is erected on the plurality of fixed supports, an inverted U-shaped cushion block is fixed on the upper portion of the bearing beam, the end portion of the arch truss is fixed on the cushion block, the bearing beam also serves as a track for the integral transverse movement of the arch truss, and after the arch truss is hoisted on the bearing beam, the arch truss is pulled to transversely move to a preset position along the bearing beam under the limiting effect of the cushion block.
Preferably, the inclined plane of the upper portion of the arch center is used for supporting a bottom die and a side die at the arch springing position of the arch ring, a third steel plate is embedded in the inclined plane of the upper portion of the arch center, a bracket is welded on the third steel plate, and the bracket is used for supporting the bottom die at the arch springing position of the arch ring.
Preferably, the pair of tie rod holes on the arch support is provided in plurality along the transverse bridge direction.
Preferably, when the arch center is constructed, longitudinal stress steel bars of an arch ring are embedded in the arch center, and the longitudinal stress steel bars extend out of the arch center.
Preferably, the bottom die is an arc-shaped steel film, the bottom die is provided with vertical abutted seams at the ends of the upper chords of the arch truss, and abutted seam gaps are reserved in the arch crown.
Preferably, the bottom die and the side die are bottom die ladle side dies, a plurality of second distribution beams are erected on the upper portion of the top die along a longitudinal bridge direction, the second distribution beams are arranged along a transverse bridge direction in parallel, the second distribution beams correspond to the first distribution beams in a one-to-one manner, temporary pull rods are fixed to two ends of each second distribution beam, one end of each temporary pull rod is fixed to the corresponding second distribution beam, and the other end of each temporary pull rod is fixed to the end portion of the corresponding first distribution beam.
Preferably, a plurality of arc-shaped steel pipes perpendicular to the second distribution beam are uniformly distributed on the upper portion of the second distribution beam along the transverse bridge direction, the arc-shaped steel pipes are fixedly connected with the second distribution beam, and the arc-shaped steel pipes at two ends of the second distribution beam are fixedly connected with the upper end portion of the temporary pull rod.
Preferably, a certain gap is reserved at the arch top of the side mold, and the gap is filled with a rubber strip.
Compared with the prior art, the scheme of the application has the following advantages:
in the installation method of the arch bridge arch ring, in the arch center construction process, a pull rod hole is formed in the arch center, so that a pull rod is installed in the pull rod hole in sequence, two ends of the pull rod are fixed on two adjacent arch centers respectively, concrete pouring is carried out on the single arch center span, horizontal thrust applied to the arch centers at two ends of the arch ring by the arch ring can be balanced, and the construction safety and the construction quality of the arch ring are finally guaranteed by guaranteeing the stability of an arch center structure.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an arch ring of an arch bridge in the present application;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic view of the structure of the abutment and the tie-rod in the present application;
fig. 4 is a structural diagram of the arch ring steel bar in the application.
Reference numerals: 1. an arch support; 2. an arch ring support; 21. an arch truss; 22. fixing a support; 3. pouring a template; 4. a pull rod is arranged; 5. a first steel plate; 6. a second steel plate; 7. a third steel plate; 8. and (5) longitudinally stressing the steel bars.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and are not construed as limiting the present application.
It will be understood by those within the art that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 3, the present application relates to a method for installing an arch ring of an arch bridge, which is used for improving the safety and stability of the installation of the arch ring, and comprises the following steps:
1) constructing on a bearing platform and an arch support 1; firstly, constructing a bearing platform, and then constructing the arch support 1 on the upper part of the bearing platform;
2) installing an arch ring bracket 2; the arch ring support 2 comprises a plurality of arch trusses 21 and fixed supports 22 supported at two ends of the arch trusses 21, the fixed supports 22 are fixed on a bearing platform, the arch trusses 21 are respectively and independently hoisted integrally, two ends of the arch trusses 21 are respectively fixed on the fixed supports 22 positioned at two ends of the arch trusses 21, the arch trusses 21 are distributed along the transverse bridge direction, and the arch trusses 21 are mutually and fixedly connected;
3) erecting a plurality of first distribution beams on the upper parts of the plurality of arched trusses 21 along a longitudinal bridge direction, wherein the first distribution beams are arranged along a bridge direction parallel to a transverse arch ring, and a bottom die of an arch ring is erected on the upper parts of the first distribution beams;
4) erecting a steel bar structure of an arch ring between two adjacent arch supports 1 and on the upper part of the bottom die, and then erecting a top die of the arch ring;
5) pouring concrete in a pouring template 3 consisting of the bottom die, the side die and the top die to finish the concrete pouring of the arch ring;
6) disassembling the arch ring support 2;
when the arch support 1 is constructed, a tie rod hole is arranged in the arch support 1, so that a tie rod 4 can be conveniently installed in the tie rod hole in the follow-up process, and two ends of the tie rod 4 are respectively fixed on two adjacent arch supports 1.
In this application, in 1 work progress of hunch seat set up in the hunch seat 1 to the draw-bar hole, with in follow-up to the downthehole installation of draw-bar 4 to be fixed in adjacent two respectively at the both ends of draw-bar 4 on the hunch seat 1, and then carry out concrete placement at the hunch circle single-span, can balance the horizontal thrust that the hunch seat 1 of hunch circle both ends was applyed for the hunch seat, through the steadiness of having guaranteed the 1 structure of hunch seat, finally guaranteed the construction safety and the construction quality of hunch circle.
Preferably, the bottom of the fixed support 22 is fixed on a bearing platform, the middle of the side of the fixed support 22 is further fixedly connected with the first steel plate 5 pre-embedded in the middle of the side of the arch support 1, in this embodiment, a fixed steel plate (not numbered in the drawing, the same below) is connected between the fixed support 22 and the arch support 1, and two ends of the fixed steel plate are respectively welded and fixed with the first steel plate 5 and the fixed support 22.
By connecting and fixing the fixed support 22 and the arch support 1, the supporting capability of the fixed support 22 can be improved, so that the fixed support 22 can stably support the arch truss 21, and the subsequent installation of the arch support is ensured to be smooth.
Further, the arch truss 21 is erected on the fixed support 22, and an end of the arch truss 21 is fixedly connected with the second steel plate 6 pre-embedded at the upper portion of the side surface of the arch support 1, in this embodiment, a steel (not numbered in the drawing, the same applies below) is arranged between the arch truss 21 and the arch support 1, and two ends of the steel are respectively welded and fixed with the second steel plate 6 and the arch truss 21.
The arch truss 21 and the arch support 1 are connected and fixed, so that the stability of the arch truss 21 can be improved, and the smoothness of the subsequent arch ring construction can be ensured.
Furthermore, an inclined plane is arranged on one side, close to the arch ring, of the upper portion of the arch support 1, the inclined plane is used for supporting the pouring template 3 at the arch foot of the arch ring, namely a bottom die and a side die at the arch foot of the arch ring are supported, a third steel plate 7 is also pre-embedded on the inclined plane at the upper portion of the arch support 1, a bracket (not numbered in the drawing and the same below) is welded on the third steel plate 7, the bracket is used for supporting the lower portion of the bottom die of the pouring template 3 at the arch foot of the arch ring, so that the stability of the pouring template 3 during concrete pouring is guaranteed, and the safety and the quality of arch ring construction are further guaranteed.
In this application, the template 3 of pouring of arch ring is supported by arch ring support 2 to guarantee the stability of arch ring in the work progress, welded fastening between the pre-buried first steel sheet 5 in this application with fixing support 22 and arch center 1, then with welded fastening between the pre-buried second steel sheet 6 in arch truss 21 and the arch center 1, and then strengthened the steadiness that arch ring support 2 and arch center 1 are connected has also improved the wholeness between arch ring support 2 and the arch center 1 simultaneously, and then guarantees when the arch ring is under construction and the stability after the construction is accomplished.
In this embodiment, the fixing supports 22 are steel pipe piles of phi 426X6mm, a plurality of fixing supports 22 are uniformly arranged along the transverse bridge direction, a bearing beam (not numbered in the figure, the same below) is erected on the plurality of fixing supports 22, an inverted U-shaped cushion block (not numbered in the figure, the same below) is fixed on the upper portion of the bearing beam, the cushion blocks on the upper portion of the bearing beam correspond to the arch trusses 21 one by one, the end portions of the arch trusses 21 are fixed on the cushion blocks, the bearing beam also serves as a rail for the integral transverse movement of the arch trusses 21, and after the arch trusses 21 are hung on the bearing beam, the arch trusses 21 are pulled to transversely move to the preset position along the bearing beam under the limiting effect of the cushion blocks. The arched truss 21 is supported by the plurality of fixed supports 22, so that the stability of the arched truss 21 is guaranteed, the safety and the quality of arch ring construction are finally guaranteed, the bearing beam serves as a sliding rail of the arched truss 21 and is matched with the limiting function of the cushion block, the installation of the arched truss 21 is facilitated, and the construction efficiency is greatly improved.
Preferably, the tie rod holes are arranged in the transverse bridge direction, the tie rod holes are staggered with the fixed supports 22, so that the follow-up installation of the tie rods 4 in the tie rod holes is prevented, the tie rod holes are arranged, the tie rods 4 are correspondingly installed between two adjacent arch bases 1, the horizontal thrust applied to the arch bases 1 by the arch rings during pouring is balanced, the stability of the arch bases 1 is guaranteed, and the safety and the quality of arch ring construction are further guaranteed.
Furthermore, two tie rod holes are arranged in the same vertical direction on the arch support 1, and two tie rods 4 arranged in the two tie rod holes in the same vertical direction are arranged in a vertically opposite manner. The upper counter pull rod 4 is fixedly connected with the adjacent arch support 1 at one side of the arch support 1, and the lower counter pull rod 4 is fixedly connected with the adjacent arch support 1 at the other side of the arch support 1.
Through the opposite pull rod 4 that sets up relatively from top to bottom, make a plurality of archways 1 of longitudinal bridge to fuse, resist jointly when the archway pours, the horizontal thrust that the archway was applyed for archway 1, and then guarantee the stability of the archway 1 at archway both ends, guarantee the safety and the quality of archway construction.
In this embodiment, when the arch support 1 in step 1) is constructed, a steel pipe (not numbered in the drawing, the same applies below) is pre-embedded in the arch support 1 to form the pair of pull rod holes, so that the pair of pull rods 4 penetrate through the pre-embedded steel pipe, and after the pair of pull rods 4 penetrate through the arch support 1, one end of each pair of pull rods 4 is fixed to the arch support 1, and the other end of each pair of pull rods 4 is arranged on the arch support 1 adjacent to the arch support 1, so that the pair of pull rods 4 are not required to be pre-embedded in the arch support 1 when the arch support 1 is constructed, and the influence on the construction efficiency caused by the interference of the pair of pull rods 4 in the subsequent construction process is avoided; meanwhile, after the construction is finished, the pull rod 4 is also convenient to disassemble.
With reference to fig. 4, preferably, when the arch support 1 of step 1) is constructed, longitudinal stress steel bars 8 of the arch ring are embedded in the arch support 1, and the longitudinal stress steel bars 8 extend out of the arch support 1, the length of the longitudinal stress steel bars 8 embedded in the arch support 1 is not less than 1.5 meters, and the length of the longitudinal stress steel bars 8 extending out of the arch support 1 is not less than 2 meters, so that a subsequent constructor can conveniently set up a steel bar structure of the arch ring along the longitudinal stress steel bars 8, and the stability of the arch ring connected to the arch support 1 is ensured.
In this embodiment, the die block adopts the arc steel membrane, and the die block sets up vertical piece at the upper chord end of arch truss to reserve the piece breach at the vault, in order to make things convenient for constructor's construction.
Bottom die and side form adopt the form of bottom die package side form, a plurality of second distribution roof beams are erect along the longitudinal bridge to top mould upper portion, the second distribution roof beam is along being on a parallel with the setting of horizontal bridge, the second distribution roof beam with first distribution roof beam one-to-one, second distribution roof beam both ends all are fixed with interim pull rod, interim pull rod one end is fixed in the second distribution roof beam, its other end is fixed in the first distribution roof beam tip that corresponds with this second distribution roof beam.
The two ends of the temporary pull rod are respectively fixed on the end parts of the same ends of the first distribution beam and the second distribution beam which correspond to each other, so that the stability of the pouring template 3 can be ensured, and the smoothness of pouring of the arch ring concrete is ensured.
And a plurality of arc-shaped steel pipes vertical to the second distribution beams are uniformly distributed at the upper part of the second distribution beam along the transverse bridge direction, the arc-shaped steel pipes are fixedly connected with the second distribution beam, and the arc-shaped steel pipes positioned at the two ends of the second distribution beam are fixedly connected with the upper end part of the temporary pull rod. And then make a plurality of temporary pull rods link into an organic whole to further improve the steadiness of pouring template 3.
A certain gap is reserved at the arch crown of the side mold, and the gap is filled with a rubber strip to facilitate construction of the side mold.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (6)
1. A method for installing an arch ring of an arch bridge is characterized by comprising the following steps: the method comprises the following steps:
1) constructing a bearing platform and an arch support; firstly, constructing a bearing platform, and then constructing an arch support on the bearing platform, wherein when the arch support is constructed, longitudinal stress steel bars of an arch ring are pre-embedded in the arch support, and the longitudinal stress steel bars extend out of the arch support;
2) installing an arch ring support; the arch ring support includes a plurality of arch trusses and supports in the fixing support at a plurality of arch truss both ends, fixing support is fixed in the cushion cap on, will be a plurality of the arch truss is independent integral hoisting respectively to it is a plurality of the both ends of arch truss are fixed in respectively and are located a plurality of at arch truss both ends on the fixing support, it is a plurality of the arch truss is along horizontal bridge to distributing, arch truss fixed mode specifically includes:
the side surface of the fixed support is fixedly connected with a first steel plate pre-embedded in the middle of the side surface of the arch support;
the end part of the arch truss is fixedly connected with a second steel plate pre-embedded at the upper part of the side surface of the arch support; the inclined plane at the upper part of the arch center is used for supporting a bottom die and a side die at the arch foot of the arch ring, a third steel plate is also embedded in the inclined plane at the upper part of the arch center, a bracket is welded on the third steel plate, and the bracket is used for supporting the bottom die at the arch foot of the arch ring;
a plurality of tie rod holes on the arch support are arranged along the transverse bridge direction, tie rods arranged in the tie rod holes in the same vertical direction are arranged up and down oppositely, the upper tie rod is fixedly connected with the adjacent arch support at one side of the arch support, and the lower tie rod is fixedly connected with the adjacent arch support at the other side of the arch support;
3) erecting a plurality of first distribution beams on the upper parts of the plurality of arched trusses along the longitudinal bridge direction, wherein the first distribution beams are arranged along the direction parallel to the transverse bridge direction, and a bottom die of an arch ring is erected on the first distribution beams;
4) erecting a steel bar structure of an arch ring between two adjacent arch seats and on the upper part of the bottom die, and then erecting a side die of the arch ring and a top die of the arch ring;
5) finishing the concrete pouring of the arch ring;
6) and disassembling the arch ring support.
2. The method for installing an arch bridge arch ring of claim 1, wherein: the fixed support is provided with a plurality of bearing beams along the transverse bridge direction, the bearing beams are erected on the fixed support, the inverted U-shaped cushion block is fixed on the upper portion of the bearing beam, the end portion of the arch truss is fixed on the cushion block, the bearing beams serve as rails for the overall transverse movement of the arch truss, and after the arch truss is hoisted on the bearing beam, the arch truss is dragged to transversely move to a preset position along the bearing beam under the limiting effect of the cushion block.
3. The method for installing an arch bridge arch ring of claim 1, wherein: the bottom die is made of an arc-shaped steel film, vertical abutted seams are arranged at the ends of the upper chords of the arch trusses of the bottom die, and abutted seam gaps are reserved in the arch crown.
4. The method for installing an arch bridge arch ring of claim 1, wherein: bottom die and side form adopt the form of bottom die package side form, a plurality of second distribution roof beams have been erect along the longitudinal bridge direction in top die upper portion, second distribution roof beam is along being on a parallel with the setting of transverse bridge direction, second distribution roof beam with first distribution roof beam one-to-one, second distribution roof beam both ends all are fixed with interim pull rod, interim pull rod one end is fixed in second distribution roof beam, its other end is fixed in the first distribution roof beam tip that corresponds with this second distribution roof beam.
5. The method for installing an arch ring of an arch bridge as claimed in claim 4, wherein: and a plurality of arc-shaped steel pipes vertical to the second distribution beams are uniformly distributed at the upper part of the second distribution beam along the transverse bridge direction, the arc-shaped steel pipes are fixedly connected with the second distribution beam, and the arc-shaped steel pipes positioned at the two ends of the second distribution beam are fixedly connected with the upper end part of the temporary pull rod.
6. The method for installing an arch bridge arch ring of claim 1, wherein: a certain gap is reserved at the arch crown of the side mold, and the gap is filled with a rubber strip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010875884.0A CN111877126B (en) | 2020-08-25 | 2020-08-25 | Method for installing arch ring of arch bridge |
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| CN202010875884.0A CN111877126B (en) | 2020-08-25 | 2020-08-25 | Method for installing arch ring of arch bridge |
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| CN111877126A CN111877126A (en) | 2020-11-03 |
| CN111877126B true CN111877126B (en) | 2022-08-30 |
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| CN114293485B (en) * | 2022-01-20 | 2022-11-08 | 四川省公路规划勘察设计研究院有限公司 | Arch bridge reinforced structure without traffic interruption and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2700162B2 (en) * | 1988-12-27 | 1998-01-19 | 岡部株式会社 | Mobile formwork construction method for arch concrete |
| CN100503977C (en) * | 2007-03-21 | 2009-06-24 | 浙江省舟山连岛工程建设指挥部 | Tower column of stayed-cable bridge and its construction method |
| CN205205667U (en) * | 2015-10-23 | 2016-05-04 | 中交二公局第一工程有限公司 | Bearing bracket device |
| CN108660935B (en) * | 2018-05-29 | 2019-11-26 | 广西路桥工程集团有限公司 | A kind of construction method of reinforced concrete arch bridge |
| CN109056548B (en) * | 2018-09-19 | 2020-10-09 | 中交二公局第六工程有限公司 | Steel arch construction method |
| CN209178838U (en) * | 2018-11-27 | 2019-07-30 | 中铁二十局集团第三工程有限公司 | The interim skewback of deck type box arch bridge construction |
| CN210658063U (en) * | 2019-03-06 | 2020-06-02 | 安徽省公路桥梁工程有限公司 | Arch rib enlarged cross section hanging mould system |
| CN210684428U (en) * | 2019-08-08 | 2020-06-05 | 中铁二十局集团第三工程有限公司 | Deck-type arch bridge arch rib construction structure |
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