CN113026539A - Upper connecting rail structure of integral cast-in-place frame bridge and construction method - Google Patents
Upper connecting rail structure of integral cast-in-place frame bridge and construction method Download PDFInfo
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- CN113026539A CN113026539A CN202110413663.6A CN202110413663A CN113026539A CN 113026539 A CN113026539 A CN 113026539A CN 202110413663 A CN202110413663 A CN 202110413663A CN 113026539 A CN113026539 A CN 113026539A
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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
- E01D19/00—Structural or constructional details of 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
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to 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
- E01D21/10—Cantilevered erection
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Abstract
The invention discloses a track connecting structure on an integral cast-in-place frame bridge, which is used for realizing track connection between a newly-built railway and an existing line on the bridge, wherein: the cast-in-place structure comprises a frame beam with a cast-in-place structure, a cantilever post-pouring section and a pier; the cast-in-place frame beam is arranged between two adjacent piers of an existing line, the width of the cast-in-place frame beam is larger than that of the bridge of the original existing line, and the cast-in-place frame beam is eccentrically arranged on a newly built railway towards the outside; the lower part of the frame beam is reinforced through a pile foundation, and the upper end surface of the frame beam is higher than the upper end surface of the bridge pier; the lower end surface of the cantilever post-cast section is supported on the top of the pier; and newly built railways, existing lines and turnout devices are arranged above the frame beam and the cantilever post-cast section and are used as bridges of the newly built railways and the existing lines. The invention solves the problem of track connection on the bridge, can greatly reduce the construction cost and save the construction period, and has the advantages of rapid and convenient construction and obvious reduction of the construction cost compared with the method of constructing the track connection on the bridge by newly designing the construction turnout continuous beam.
Description
Technical Field
The invention belongs to the field of reconstruction and extension of an existing railway line, and particularly relates to a novel technology for connecting rails on an integral cast-in-place frame bridge.
Background
The newly-built railway and the existing railway are mostly completed in a roadbed section, and no engineering example for realizing the on-bridge track connection in the constructed railway exists at present.
Railway track connection is bound to be free from turnout structures, and has the disadvantages of complex stress, easy damage and difficult replacement. In order to ensure the durability of the turnout structure and the safety of railways, the turnout structure is required to be arranged on an integral continuous bridge surface by regulations when being positioned on a bridge, meanwhile, the distance between a turnout point and a beam seam is required to be more than or equal to 18m, so when the turnout is positioned on the bridge, the traditional method mostly adopts a porous continuous beam, controls the bending span ratio to be not more than 1/4000, generally controls the span to be not more than 48m, and mostly adopts a continuous beam with the width of 6-32m, 4-32m or 3-32m or the like or widens according to the type and the length of the turnout.
If the track connection on the bridge is guided by the track combination technology of the moving road base section, namely the operation of the existing line is interrupted, the beam body and the pier of the existing upper structure are removed, and the construction of the turnout continuous beam, the matched pier and the foundation which are newly designed is carried out.
Therefore, the rail connection on the bridge usually needs higher engineering cost and longer time, and the economic cost and the social cost are obviously increased due to the longer construction period.
However, in some railway engineering, the rail bridging between the newly-built railway and the existing railway must be realized at a certain working site, and the prior art lacks the rail bridging form and the complete technology to solve the problems.
Disclosure of Invention
Aiming at least one of the defects or improvement requirements of the prior art, the invention provides an upper rail connecting structure of an integral cast-in-place frame bridge and a construction method, and provides a method for realizing the upper rail connecting of the bridge by adopting a cast-in-place frame form to form a complete technology, so as to solve the rail connecting problem of the bridge, greatly reduce the construction cost and save the construction period.
To achieve the above object, according to one aspect of the present invention, there is provided a track connecting structure on an integrally cast-in-place frame bridge, for connecting a newly constructed railway and an existing railway on the bridge, wherein:
the cast-in-place structure comprises a frame beam with a cast-in-place structure, a cantilever post-pouring section and a pier;
the cast-in-place frame beam is arranged between two adjacent piers of an existing line, the width of the cast-in-place frame beam is larger than that of the bridge of the original existing line, and the cast-in-place frame beam is eccentrically arranged on a newly built railway towards the outside; the lower part of the frame beam is reinforced through a pile foundation, and the upper end surface of the frame beam is higher than the upper end surface of the bridge pier;
one or a plurality of bridge piers with transverse lines are arranged between two adjacent frame beams;
the two adjacent frame beams are connected with each other by extending a plurality of pre-embedded reserved steel bar joints and cantilever post-pouring sections of joint belts towards opposite directions;
the lower end surface of the cantilever post-cast section is supported on the top of the pier;
and newly-built railways, existing lines and turnout devices are arranged above the frame beam and the cantilever post-cast section and are used as bridges of the newly-built railways and the existing lines.
Preferably, when the transverse distance between the newly-built railway and the existing line is smaller than or equal to the preset safety distance, only one pier is arranged between two adjacent frame beams, the newly-built railway and the existing line share the pier, and the single pier supports the whole cantilever post-casting section at the position.
Preferably, when the transverse distance between the newly-built railway and the existing line is larger than the preset safety distance, a plurality of piers are arranged between two adjacent frame beams, the newly-built railway and the existing line are respectively provided with respective piers, and the plurality of piers support the whole cantilever post-casting section at the position together.
Preferably, the pile foundation is a high-pressure jet grouting pile.
In order to achieve the above object, according to another aspect of the present invention, there is provided a method for constructing a track on an integrally cast-in-place frame bridge, which is used for connecting a newly-built railway with an existing railway on the bridge, and includes the following steps:
the method comprises the following steps:
the operation of the existing line is not interrupted, and a pile foundation is constructed between two adjacent piers of the existing line to reinforce the roadbed below the existing line; newly building piers transversely and side by side on one side, close to a newly built railway to be built, of the original piers of the existing railway;
step two:
temporarily interrupting the operation of the existing line, dismantling the simply supported existing line bridge at the upper part of the bridge pier, and reserving the bridge pier below the bridge;
step three:
immediately casting a frame beam in situ between two adjacent piers of an existing line and on a pile foundation at the position after a simply supported existing line bridge beam is removed, wherein the width of the frame beam is larger than that of the original existing line bridge, and the frame beam is eccentrically arranged towards a newly-built railway to be built outwards, and the elevation of the upper end surface exceeds the upper end surface of the piers and reaches the elevation of the rail surface of the original existing line bridge; between two adjacent frame beams, the main reinforcement of the top plate of the frame beam extends out to form a reserved reinforcement joint for reserving the cast-in-place zones of the frame beams on two sides;
step four:
connecting cantilever post-cast sections extending out of the frame of the cast-in-place reserved steel bar joint between two adjacent piers and on the piers;
step five:
and after the frame beam and the cantilever post-cast section reach the age, paving a bridge deck II constant including a railway ballast auxiliary project on the frame beam and the cantilever post-cast section, constructing a newly-built railway, an existing line and a turnout device, completing the track paving and the rail connecting, and finally recovering the traffic of the newly-built railway and the existing line.
Preferably, in the first step, the construction of the pile foundation adopts a high-pressure jet grouting pile driving mode.
Preferably, in the first step, when the transverse distance between the newly-built railway and the existing line is less than or equal to the preset safety distance, only one pier is arranged between two adjacent frame beams, the newly-built railway and the existing line share the pier, and the single pier supports the whole post-cast section of the cantilever at the position;
when the transverse distance between the newly-built railway and the existing line is larger than the preset safety distance, a plurality of piers are arranged between two adjacent frame beams, the newly-built railway and the existing line are respectively provided with respective piers, and the plurality of piers jointly support the whole cantilever post-pouring section at the position.
Preferably, in the step one, the bridge pier which is newly built transversely side by side and the original bridge pier are independent from each other, and the bearing platforms of the bridge pier and the original bridge pier are not connected with each other to form a whole.
Preferably, in the third step, the number of the steel bars required to be extended out for the joint is encrypted at the position where the top plate main bar of the frame beam is extended out.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. the invention provides a method for realizing the track connection on a bridge by adopting a cast-in-place frame form to form a complete set technology, which is used for solving the problem of the track connection on the bridge, greatly reducing the construction cost and saving the construction period.
2. The invention provides a novel structural form for realizing the rail connection on a bridge, which ensures the feasibility of the scheme by taking a cast-in-place large frame as a main body and reserving a post-cast strip reserved steel bar joint and forming a continuous beam body structure after the post-cast strip is poured, and makes an important innovation for the construction of the engineering by applying the structural form to realize the rail connection on the bridge.
3. The invention provides a matched set of construction technology according to the structural form and the condition of project construction points, thereby defining the construction sequence and construction method and ensuring the implementability of the structural form.
4. The complete set of technology for connecting rails on the bridge provides a perfect solution for the reconstruction and extension engineering of the same kind of existing railway lines, can be popularized and applied in a large range, and promotes the development of the railway industry.
Drawings
FIG. 1 is a schematic side view of a track-joining structure on an integrally cast-in-place frame bridge of the present invention;
FIG. 2 is a schematic top view of the track-joining structure of the integral cast-in-place frame bridge of the present invention;
FIG. 3 is one of the process schematic diagrams of the construction method of the track connecting structure on the integral cast-in-place frame bridge of the invention;
FIG. 4 is a schematic top view of FIG. 3;
FIG. 5 is a second process diagram of the construction method of the track connecting structure on the cast-in-place integral frame bridge of the present invention;
FIG. 6 is a schematic top view of FIG. 5;
FIG. 7 is a third process diagram of the construction method of the track connecting structure on the integrated cast-in-place frame bridge of the present invention;
FIG. 8 is a schematic top view of FIG. 7;
FIG. 9 is a fourth process diagram of the construction method of the track connecting structure on the integrated cast-in-place frame bridge of the present invention;
FIG. 10 is a schematic top view of FIG. 9;
in the construction process structure diagram, parts of components are omitted as appropriate for the sake of simplicity and clarity of subsequent structures/steps.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
As a preferred embodiment of the present invention, as shown in fig. 1-2, the present invention provides an on-bridge track connection structure of an integrally cast-in-place frame, which is used for connecting a newly constructed railway 20 and an existing railway 10 on a bridge, wherein: the cast-in-place structure comprises a frame beam 1 of a cast-in-place structure, a cantilever post-casting section 2 and a pier 3.
The cast-in-place frame beam 1 is arranged between two adjacent piers 3 of an existing line 10, the width of the cast-in-place frame beam is larger than that of an original existing line bridge, and the cast-in-place frame beam is eccentrically arranged on an outward newly-built railway 20; the lower part of the frame beam 1 is reinforced through the pile foundation 4, the elevation of the upper end surface of the frame beam is higher than that of the upper end surface of the pier 3, and the rail surface elevation of the original existing line bridge is achieved. Preferably, the pile foundation 4 is a high-pressure jet grouting pile.
One or a plurality of bridge piers 3 with transverse lines are arranged between two adjacent frame beams 1. Preferably, when the transverse distance between the newly-built railway 20 and the existing line 10 is less than or equal to the preset safety distance, only one pier 3 is arranged between two adjacent frame beams 1, the newly-built railway 20 and the existing line 10 share the pier, and the single pier supports the whole cantilever post-casting section 2 at the pier. When the transverse distance between the newly-built railway 20 and the existing line 10 is larger than the preset safety distance, a plurality of piers 3 are arranged between two adjacent frame beams 1, the piers are respectively arranged below the newly-built railway 20 and the existing line 10, and the piers jointly support the whole cantilever post-casting section 2 at the position.
Between two adjacent frame roof beams 1, connect each other through the cantilever post-cast section 2 that stretches out a plurality of pre-buried reservation steel bar joints 5 and joint area to the opposite direction.
The lower end surface of the cantilever post-cast section 2 is supported on the top of the pier 3.
And a newly-built railway 20, an existing line 10 and a turnout device are arranged above the frame beam 1 and the cantilever post-pouring section 2 and are used as a bridge of the newly-built railway 20 and the existing line 10.
The invention provides a method for realizing the track connection on a bridge by adopting a cast-in-place frame form to form a complete set technology, which is used for solving the problem of the track connection on the bridge, greatly reducing the construction cost and saving the construction period.
The invention provides a novel structural form for realizing the rail connection on a bridge, which ensures the feasibility of the scheme by taking a cast-in-place large frame as a main body and reserving a post-cast strip reserved steel bar joint and forming a continuous beam body structure after the post-cast strip is poured, and makes an important innovation for the construction of the engineering by applying the structural form to realize the rail connection on the bridge.
As shown in fig. 3 to 10, the following describes a method for constructing a track on an integrally cast-in-place frame bridge according to the present invention, which is used for implementing track connection between a newly-built railway 20 and an existing railway 10 on a bridge, and includes the following steps:
the method comprises the following steps:
starting from the initial state shown in fig. 3-4, constructing a pile foundation 4 between two adjacent piers 3 of the existing line to reinforce the roadbed below the existing line without interrupting the operation of the existing line 10; and newly constructing piers 3 transversely and side by side on the side, close to the newly constructed railway 20 to be constructed, of the original piers of the existing railway, as shown in fig. 5-6.
Preferably, in the first step, the pile foundation 4 is constructed by driving a high-pressure jet grouting pile.
Preferably, in the first step, when the transverse distance between the newly-built railway 20 and the existing line 10 is less than or equal to the preset safety distance, only one pier 3 is arranged between two adjacent frame beams 1, the newly-built railway 20 and the existing line 10 share the pier, and the single pier supports the whole cantilever post-casting section 2 at the pier. When the transverse distance between the newly-built railway 20 and the existing line 10 is larger than the preset safety distance, a plurality of piers 3 are arranged between two adjacent frame beams 1, the newly-built railway 20 and the existing line 10 are respectively provided with respective piers, and the plurality of piers support the whole cantilever post-casting section 2 at the position together.
Preferably, in the step one, the bridge pier which is newly built transversely side by side and the original bridge pier are independent from each other, and the bearing platforms of the bridge pier and the original bridge pier are not connected with each other to form a whole.
Step two:
as shown in fig. 5 to 6, the operation of the existing line 10 is temporarily interrupted, and the existing bridge 11, which is simply supported above the pier 3, is removed, leaving the pier below the bridge.
Step three:
as shown in fig. 7-8, immediately casting a frame beam 1 in situ between two adjacent piers 3 of an existing line and on a pile foundation 4 at a position after removing a simply supported existing line bridge 11 beam, wherein the width of the frame beam is larger than that of the original existing line bridge, and the frame beam is eccentrically arranged towards a newly built railway 20 to be built, and the elevation of the upper end surface exceeds the elevation of the upper end surface of the pier 3 and reaches the elevation of the rail surface of the original existing line bridge 11; between two adjacent frame roof beams 1, the roof main reinforcement of frame roof beam 1 stretches out, makes it become the reservation steel bar joint 5 of reserving the cast-in-place area of frame roof beam of both sides. Preferably, in the third step, the number of the steel bars required to be extended out for the joint is encrypted at the position where the top plate main bar of the frame beam 1 is extended out.
Step four:
as shown in fig. 9 to 10, the cantilever post-cast sections 2 extending from the frame of the cast-in-place spare steel bar joint 5 are connected with each other between two adjacent piers 3 and on the piers 3.
Step five:
after the frame beam 1 and the cantilever post-cast section 2 reach the age, a bridge deck II including a railway ballast auxiliary project is laid on the frame beam 1 and the cantilever post-cast section 2, a newly-built railway 20, an existing line 10 and a turnout device are constructed, the track laying and the rail connecting are completed, and finally the newly-built railway 20 and the existing line 10 are recovered to be communicated together. The resulting structure is shown in fig. 1-2.
The construction schedule of the present embodiment is as follows:
the invention does not limit the span number, and for the condition of more spans, the construction method is the same, and only the same structure is needed to be added.
As a further preferable scheme, the shapes of the frame beam 1 and the cantilever post-cast section 2 in a top view state are selected to be trapezoids, or the frame beam 1 is a combination of a trapezoid and a rectangle with the same width.
By the rail connecting technology on the bridge, the invention has the following remarkable beneficial effects:
the invention provides a method for realizing the track connection on a bridge by adopting a cast-in-place frame form to form a complete set technology, which is used for solving the problem of the track connection on the bridge, greatly reducing the construction cost and saving the construction period.
The invention provides a novel structural form for realizing the rail connection on a bridge, which ensures the feasibility of the scheme by taking a cast-in-place large frame as a main body and reserving a post-cast strip reserved steel bar joint and forming a continuous beam body structure after the post-cast strip is poured, and makes an important innovation for the construction of the engineering by applying the structural form to realize the rail connection on the bridge.
The invention provides a matched set of construction technology according to the structural form and the condition of project construction points, thereby defining the construction sequence and construction method and ensuring the implementability of the structural form.
The complete set of technology for connecting rails on the bridge provides a perfect solution for the reconstruction and extension engineering of the same kind of existing railway lines, can be popularized and applied in a large range, and promotes the development of the railway industry.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The utility model provides a rail structure on whole cast-in-place frame bridge for new-built railway (20) and existing line (10) realize the rail on the bridge, its characterized in that:
the cast-in-place structure comprises a frame beam (1) with a cast-in-place structure, a cantilever post-cast section (2) and a pier (3);
the cast-in-place frame beam (1) is arranged between two adjacent piers (3) of an existing line (10), the width of the cast-in-place frame beam is larger than that of an original existing line bridge, and the cast-in-place frame beam is eccentrically arranged on a newly built railway (20) towards the outside; the lower part of the frame beam (1) is reinforced through a pile foundation (4), and the upper end surface of the frame beam is higher than the upper end surface of the pier (3);
one or a plurality of bridge piers (3) with transverse lines are arranged between two adjacent frame beams (1);
the two adjacent frame beams (1) are connected with each other through a plurality of pre-embedded reserved steel bar joints (5) extending towards the opposite direction and a cantilever post-pouring section (2) of the joint belt;
the lower end surface of the cantilever post-cast section (2) is supported on the top of the pier (3);
a newly-built railway (20), an existing line (10) and a turnout device are arranged above the frame beam (1) and the cantilever post-pouring section (2) and are used as a bridge of the newly-built railway (20) and the existing line (10).
2. The upper connecting rail structure of the integral cast-in-place frame bridge of claim 1, wherein:
when the transverse distance between the newly-built railway (20) and the existing line (10) is smaller than or equal to the preset safety distance, only one pier (3) is arranged between two adjacent frame beams (1), the newly-built railway (20) and the existing line (10) share the pier, and the single pier supports the whole cantilever post-casting section (2) at the position.
3. The upper connecting rail structure of the integral cast-in-place frame bridge of claim 1, wherein:
when the transverse distance between the newly-built railway (20) and the existing line (10) is larger than the preset safety distance, a plurality of piers (3) are arranged between two adjacent frame beams (1), the piers are respectively arranged under the newly-built railway (20) and the existing line (10), and the piers jointly support the whole cantilever post-casting section (2) at the position.
4. The upper connecting rail structure of the integral cast-in-place frame bridge of claim 1, wherein:
the pile foundation (4) is a high-pressure jet grouting pile.
5. A construction method for connecting rails on an integral cast-in-place frame bridge is used for connecting rails on a bridge between a newly-built railway (20) and an existing railway (10), and is characterized by comprising the following steps:
the method comprises the following steps:
the operation of the existing line (10) is not interrupted, and a pile foundation (4) is constructed between two adjacent piers (3) of the existing line to reinforce the roadbed below the existing line; newly building piers (3) on one side of the existing line, which is close to a newly built railway (20) to be built, in a transverse and side-by-side manner;
step two:
temporarily interrupting the operation of the existing line (10), dismantling the existing line bridge (11) simply supported at the upper part of the bridge pier (3), and reserving the bridge pier below the bridge;
step three:
immediately casting a frame beam (1) in situ between two adjacent piers (3) of an existing line and on a pile foundation (4) at the position after a simply-supported existing line bridge (11) beam is removed, wherein the width of the frame beam is larger than that of the original existing line bridge, the frame beam is eccentrically arranged towards a newly-built railway (20) to be built, and the elevation of the upper end surface exceeds the upper end surfaces of the piers (3) and reaches the elevation of the rail surface of the original existing line bridge (11); between two adjacent frame beams (1), the main reinforcement of the top plate of the frame beam (1) extends out to form a reserved reinforcement joint (5) for reserving the cast-in-place zones of the frame beams at two sides;
step four:
between two adjacent piers (3) and on the piers (3), cantilever post-cast sections (2) extending out of the frame of the cast-in-place reserved steel bar joint (5) are connected with each other;
step five:
after the frame beam (1) and the cantilever post-cast section (2) reach the age, a bridge deck II including a railway ballast auxiliary project is laid on the frame beam (1) and the cantilever post-cast section (2), a newly-built railway (20), an existing line (10) and a turnout device are constructed, the track laying and the rail connecting are completed, and finally the newly-built railway (20) and the existing line (10) are recovered to be communicated together.
6. The construction method of the upper connecting rail of the integral cast-in-place frame bridge as claimed in claim 5, wherein:
in the first step, the construction of the pile foundation (4) adopts a high-pressure jet grouting pile driving mode.
7. The construction method of the upper connecting rail of the integral cast-in-place frame bridge as claimed in claim 5, wherein:
in the first step, when the transverse distance between the newly-built railway (20) and the existing line (10) is smaller than or equal to the preset safety distance, only one pier (3) is arranged between two adjacent frame beams (1), the newly-built railway (20) and the existing line (10) share the pier, and the single pier supports the whole cantilever post-casting section (2) at the position;
when the transverse distance between the newly-built railway (20) and the existing line (10) is larger than the preset safety distance, a plurality of piers (3) are arranged between two adjacent frame beams (1), the piers are respectively arranged under the newly-built railway (20) and the existing line (10), and the piers jointly support the whole cantilever post-casting section (2) at the position.
8. The method for constructing the upper connecting rail of the integral cast-in-place frame bridge according to claim 7, wherein the method comprises the following steps:
in the first step, the bridge pier which is transversely and newly built side by side and the original bridge pier are mutually independent, and the bearing platforms of the bridge pier and the original bridge pier are not mutually connected to form a whole.
9. The construction method of the upper connecting rail of the integral cast-in-place frame bridge as claimed in claim 5, wherein:
and in the third step, the number of the steel bars required to be stretched out as joints is encrypted at the stretching-out part of the main reinforcement of the top plate of the frame beam (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110413663.6A CN113026539A (en) | 2021-04-16 | 2021-04-16 | Upper connecting rail structure of integral cast-in-place frame bridge and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110413663.6A CN113026539A (en) | 2021-04-16 | 2021-04-16 | Upper connecting rail structure of integral cast-in-place frame bridge and construction method |
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| CN113026539A true CN113026539A (en) | 2021-06-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875771A (en) * | 2022-04-18 | 2022-08-09 | 中铁上海设计院集团有限公司 | Design and construction method of track-laying base bridge |
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2021
- 2021-04-16 CN CN202110413663.6A patent/CN113026539A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875771A (en) * | 2022-04-18 | 2022-08-09 | 中铁上海设计院集团有限公司 | Design and construction method of track-laying base bridge |
| CN114875771B (en) * | 2022-04-18 | 2023-12-01 | 中铁上海设计院集团有限公司 | Design and construction method of track laying base bridge |
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