CN217104732U - Sectional type crossbeam construction structures of strideing across existing railway line gate-type pier - Google Patents
Sectional type crossbeam construction structures of strideing across existing railway line gate-type pier Download PDFInfo
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- CN217104732U CN217104732U CN202220110598.XU CN202220110598U CN217104732U CN 217104732 U CN217104732 U CN 217104732U CN 202220110598 U CN202220110598 U CN 202220110598U CN 217104732 U CN217104732 U CN 217104732U
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Abstract
The utility model relates to a stride across sectional type crossbeam construction structures of existing railway line gate-type pier. The portal pier beam needs to be cast in place by a support at a designed position, the influence on the existing line is large, and the time for blocking the line is long. The utility model comprises a supporting structure and a pushing structure; the supporting structure comprises a cast-in-place beam bracket and a sand box; the cast-in-place beam support comprises a vertical column at the lower part and a steel truss at the top part; the sand box is arranged between the top of the upright post and the bottom of the steel truss; the pushing structure comprises a slideway and a slideway support; the slide ways are transversely arranged on the front side and the rear side of the cast-in-place beam support and extend from the left end of the cast-in-place beam support to a position between the two pier columns; the slide support is located below the slide. Utilize the utility model discloses a bearing structure can be at the first cast-in-place section of cast-in-place crossbeam outside existing railway line, later utilize the top to push away the structure flat push to the design position, then the secondary wet connect crossbeam tip and join with the pier post, reducible interference to railway operation, furthest has increased construction safety.
Description
Technical Field
The utility model relates to a railway bridge pier engineering construction technical field, concretely relates to stride across sectional type crossbeam construction structures of existing railway line gate-type pier.
Background
The bridge pier is a main body structure for supporting the bridge span, bears all loads transmitted by the bridge span structure and transmits vertical loads to a bridge foundation, and the bridge pier needs to have a spanning function besides the supporting functions of enough strength, rigidity, stability and the like.
The railroad bridge pier is mainly rectangular, round and round end-shaped solid pier, and the selected materials are stone, concrete and reinforced concrete. With the development of railway and highway traffic, the three-dimensional crossing is more and more limited by terrain and crossing, the bridge span required by the three-dimensional crossing is larger and larger, the structure and construction are more complex, and the investment is larger and larger. The vertical crossing adopts the standard span prefabricated bridge, so that the process is mature, the construction is simple, the construction period can be shortened, and the investment can be saved. Therefore, designing the portal pier to span the existing railway firstly, and then erecting the prefabricated simply-supported T beam on the portal pier beam is one of the important methods for realizing the spanning of the existing railway line by adopting the standard span prefabricated bridge. However, the portal pier cross beam is usually constructed by a support cast-in-place method at a designed position, so that the operation interference and influence on the existing line, particularly the electrified railway of a busy trunk line are large, the construction time of the blocked line is long, and the safety risk is large.
Disclosure of Invention
The utility model aims at providing a stride across sectional type crossbeam construction structures of existing railway line gate-type pier to solve current crossbeam construction technology at least and disturb and influence great, blockade the problem that circuit construction time is long, the safety risk is big to existing line operation.
In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:
a sectional type cross beam construction structure for spanning gate-type piers of an existing railway line comprises a supporting structure and a pushing structure;
the supporting structure comprises a cast-in-place crossbeam bracket and a sand box; the cast-in-place beam support is arranged on the left side of the existing railway line and comprises a stand column at the lower part and a steel truss at the top; the sand box is arranged between the top of the upright post and the bottom of the steel truss;
the pushing structure comprises a slideway and a slideway support; the slide ways are transversely arranged on the front side and the rear side of the cast-in-place beam support and extend from the left end of the cast-in-place beam support to a position between the two pier columns; the slide support is located below the slide.
Furthermore, the construction structure also comprises a beam primary cast-in-place section, wherein the beam primary cast-in-place section is positioned at the top of the steel truss of the cast-in-place beam support;
i-steel perpendicular to the slide way is pre-buried at the first cast-in-place section both ends of crossbeam, the I-steel is in the front and back both sides of the first cast-in-place section of crossbeam form the bracket, the bracket below is the slide way, the bottom surface of bracket is higher than the top surface of slide way.
Further, the bottom surface of bracket is provided with the slide.
Furthermore, exposed reinforcing steel bar cylinders are embedded in the end sections of the two transverse ends of the first cast-in-place section of the beam, and the reinforcing steel bar cylinders are transversely arranged perpendicular to the end sections of the first cast-in-place section of the beam.
Furthermore, a corrugated pipe is embedded at the bottom of the first cast-in-place section of the beam, and the corrugated pipe is transversely arranged perpendicular to the cross section of the first cast-in-place section of the beam;
the corrugated pipe is arranged in the first cast-in-place section of the beam in a through manner, and two ends of the corrugated pipe are exposed out of end sections of two transverse ends of the first cast-in-place section of the beam.
Furthermore, sand is contained in the sand box, the height of the steel truss can be reduced by reducing the containing amount of the sand in the sand box, and the bracket falls and is supported on the slide way.
Furthermore, the construction structure further comprises a beam secondary wet joint section, wherein the beam secondary wet joint section is positioned on two sides of the beam primary cast-in-place section, is connected with the cross section of the beam primary cast-in-place section end, and is poured into a whole with the steel bar cylinder and the corrugated pipe.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses the crossbeam segmentation construction with door-type pier to reduce door-type pier crossbeam construction and influence, increase the safety guarantee that cause the railway operation. Firstly, a primary cast-in-place section of a cast-in-place crossbeam on an existing railway line boundary outer supporting structure is adopted, after the design strength is reached, the primary cast-in-place section of the crossbeam is horizontally pushed to a design position by a pushing structure, and then the end part of a secondary wet-joint crossbeam is connected with a pier column. Except for the secondary wet connection section of the beam, most construction is finished outside the existing railway line clearance, so that the construction is facilitated, the interference to railway operation is reduced, and the construction safety is increased to a greater extent.
The utility model discloses an among the construction structures, the wet section cross-section department that connects of crossbeam primary cast-in-place section and crossbeam secondary, the wet reinforcing bar that connects section, the first cast-in-place section of crossbeam of pier stud, crossbeam secondary is interconnected, the wet section of connecing of crossbeam secondary and the pre-buried bellows of the first cast-in-place section of crossbeam wear to establish the prestressing steel bundle and pour as an organic wholely jointly, realize that the crossbeam is by concrete structure to prestressed concrete structure's conversion to and the crossbeam is by the steady conversion of letter structure to continuous rigid frame system. The conversion is simple, stable and smooth, the mechanical property is clear, and the method has the advantages of simple, convenient and safe construction and low cost. In addition, the two ends of the primary cast-in-place section of the beam are provided with the bracket and sliding plate sliding structures, so that the horizontal pushing of the primary cast-in-place section of the beam is smoother, safer and higher in efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, drawings of other embodiments can be obtained according to the drawings without creative efforts.
Fig. 1 is an elevation view of a sectional type beam for a portal pier in the embodiment.
FIG. 2 is an elevation view of a cast-in-place beam support in an embodiment.
FIG. 3 is a side view of the support structure of the beam cast-in-place section for the first time in the embodiment.
FIG. 4 is a side view of the pushing structure of the beam cast-in-place section in the embodiment.
FIG. 5 is an elevation view of a beam first cast-in-place section pushing structure in the embodiment.
FIG. 6 is an elevation view of a secondary wet-joint section of the cross beam in the embodiment.
The labels in the figure are:
the method comprises the following steps of 1-beam first cast-in-place section, 2-cross beam first cast-in-place section and cross beam second wet joint section, 3-cross beam second wet joint section, 4-cast-in-place cross beam support, 5-bracket, 6-sliding plate, 7-slideway, 8-steel bar cylinder, 9-corrugated pipe, 10-sand box, 11-pier column, 12-slideway support, 13-existing railway descending line and 14-existing railway ascending line.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In the description of this patent, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "longitudinal", "transverse", and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "disposed," "connected," and "disposed" are to be construed broadly and may include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Example 1:
the gate pier generally comprises pier columns 11 which are vertical on two sides and a cross beam which is horizontal on the top, and as shown in fig. 1, the gate pier related in the embodiment needs to span an existing railway line, and the cross beam is divided into three parts, including a middle cross beam primary cast-in-place section 1 and two side cross beam secondary wet-connection sections 3. The beam primary cast-in-place section 1 is manufactured on the left side of an existing railway line, after the construction, the beam primary cast-in-place section is transversely moved to the right to a designed position between two pier columns 11, then a beam secondary wet connection section 3 is manufactured between the top of each pier column 11 and the end portion of the beam primary cast-in-place section 1, and a portal pier structure consisting of the pier columns 11, the beam secondary wet connection section 3 and the beam primary cast-in-place section 1 is constructed.
The embodiment has related to above-mentioned portal pier's sectional type crossbeam construction structures, including bearing structure and top pushing structure.
In fig. 2, the existing railway down-line 13 and the existing railway up-line 14 of the existing railway line are oriented in the longitudinal direction, and the support structure is located on the lateral left side of the existing railway line and on the outer side of the left abutment 11. As shown in fig. 3, the support structure includes a cast-in-place cross beam support 4 and a sand box 10. The cast-in-place beam support 4 comprises a lower upright post and a top steel truss. The sand box 10 is arranged between the top of the upright and the bottom of the steel truss. The sand box 10 is filled with sand, and the height of the steel truss can be reduced by reducing the filling amount of the sand in the sand box 10.
As shown in fig. 3, 4 and 5, the pushing structure includes a chute 7 and a chute support 12. The slide ways 7 are transversely arranged on the front side and the rear side of the cast-in-place beam support 4, and the slide ways 7 extend from the left end of the cast-in-place beam support 4 to the position between the two pier columns 11; the slideway support 12 is positioned below the slideway 7 for supporting.
The construction structure further comprises a beam primary cast-in-place section 1, wherein the beam primary cast-in-place section 1 is positioned at the top of the steel truss of the cast-in-place beam support 4 and is formed at the top of the steel truss of the cast-in-place beam support 4. I-steel vertical to the slide ways 7 are pre-embedded in the end cross sections at the two ends of the beam primary cast-in-place section 1, brackets 5 are formed on the front side and the rear side of the beam primary cast-in-place section 1 through the I-steel, the slide ways 7 are arranged below the brackets 5, and the bottom surfaces of the brackets 5 are higher than the top surfaces of the slide ways 7. The bottom surface of bracket 5 is provided with slide 6. When the height of the steel truss is reduced by reducing the sand filling amount in the sand box 10, the beam first cast-in-place section 1 moves downwards, so that the bracket 5 falls and is supported on the slide 7, and the beam first cast-in-place section 1 is supported by the cast-in-place beam support 4 and is converted into a support by the slide 7. As shown in figure 4, the beam first cast-in-place section 1 can be pushed to move transversely on the slide way 7 by a jack and other equipment. The bracket 5 is combined with the sliding plate 6 to facilitate the pushing of the beam.
As shown in fig. 3 and 5, exposed reinforcing steel bar cylinders 8 are embedded in the end sections of the two transverse ends of the beam primary cast-in-place section 1, and the reinforcing steel bar cylinders 8 are transversely arranged perpendicular to the end section of the beam primary cast-in-place section 1. The bottom of the beam primary cast-in-place section 1 is pre-embedded with a corrugated pipe 9, and the corrugated pipe 9 is transversely arranged perpendicular to the cross section of the end of the beam primary cast-in-place section 1; the corrugated pipe 9 is arranged in the beam primary cast-in-place section 1 in a through manner, and two ends of the corrugated pipe are exposed out of end sections of two transverse ends of the beam primary cast-in-place section 1. When the beam primary cast-in-place section 1 is transversely moved to a set position, the beam secondary wet-joint sections 3 are arranged at two ends of the beam primary cast-in-place section 1, and the beam secondary wet-joint sections 3 can be poured with the steel bar cylinder 8 and the corrugated pipe 9 into a whole. The steel bar barrel 8 is used for installing connecting steel bars, and the corrugated pipe 9 is used for penetrating the prestressed steel bundles. And the pier stud 11, the beam secondary wet-joint section 3 and the steel bars in the beam primary cast-in-place section 1 are connected with each other and are poured with the steel bars and the prestressed steel beams into a whole.
The arrangement of the steel bar barrel 8 and the corrugated pipe 9 enables the beam primary cast-in-place section 1 and the beam secondary wet-connection section 3 to be effectively connected, the beam primary cast-in-place section 1 has no vertical pressure on the slide 7 below, and a stress system is converted into an integral door-shaped structure. At the cross section 2 of the joint of the beam primary cast-in-place section and the beam secondary wet-connection section, the reinforcing steel bars of the pier column 11, the beam secondary wet-connection section 3 and the beam primary cast-in-place section 1 are connected with each other, the corrugated pipes pre-embedded in the beam secondary wet-connection section 3 and the beam primary cast-in-place section 1 penetrate through the prestressed steel bundles and are cast together, and therefore conversion of the beam from a concrete structure to a prestressed concrete structure and stable conversion of the beam from a simple support structure to a continuous rigid frame system are achieved.
Example 2:
the embodiment relates to a specific construction method of the construction structure, and the sectional type beam portal pier can be finally constructed, and the specific process is as follows:
the method comprises the following steps: and pier columns 11 are constructed on two sides of the existing railway line.
Step two: a cast-in-place beam support 4 is built on the outer side of a left pier column 11, a sand box 10 is arranged between a column and a steel truss of the cast-in-place beam support 4, and transverse slide rails 7 and slide rail supports 12 thereof are arranged on the front side and the rear side of the cast-in-place beam support 4.
Step three: a beam primary cast-in-place section 1 is constructed on a steel truss of a cast-in-place beam support 4, a bracket 5 is embedded, a sliding plate 6 is installed on the ground of the bracket 5, a steel bar cylinder 8 is preset at the cross section of each of two end ends of the beam primary cast-in-place section 1, a connecting steel bar is installed, and a corrugated pipe 9 is embedded at the bottom of the beam primary cast-in-place section 1 and used for a prestressed steel beam to penetrate through.
Step four: and horizontally pushing the beam to cast the section 1 in place to a designed position for the first time by using a jack.
Step five: binding a reinforcing steel bar of the beam secondary wet joint section 3 at the top of the pier column 11, erecting a mould, installing a steel bundle, connecting the reinforcing steel bar with a reinforcing steel bar of the beam primary cast-in-place section 1, tensioning the steel bundle, pouring concrete to construct the beam secondary wet joint section 3, connecting a reinforcing steel bar cylinder 8 of the beam primary cast-in-place section 1 and a corrugated pipe 9 with a reserved reinforcing steel bar of the pier column 11 into a whole through the beam secondary wet joint section 3, and completing the conversion of a beam stress system.
Step six: and removing the supporting structure and the pushing structure.
Certainly, the utility model relates to a construction structures except can being applied to the railway transportation field, also can be applied to highway, municipal transportation field, can reduce the number of times that spanes existing line's engineering time and application blockade circuit by a wide margin in the work progress, and the operation of existing line under to build the bridge disturbs for a short time, safe risk greatly reduced.
It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical personnel in the technical field of the utility model, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replace.
Claims (7)
1. The utility model provides a stride across sectional type crossbeam construction structures of existing railway line gate-type pier which characterized in that:
the construction structure comprises a supporting structure and a pushing structure;
the supporting structure comprises a cast-in-place crossbeam bracket (4) and a sand box (10); the cast-in-place beam support (4) is arranged on the left side of the existing railway line and comprises a stand column at the lower part and a steel truss at the top; the sand box (10) is arranged between the top of the upright post and the bottom of the steel truss;
the pushing structure comprises a slideway (7) and a slideway support (12); the slide way (7) is transversely arranged on the front side and the rear side of the cast-in-place beam support (4), and the slide way (7) extends to a position between the two pier columns (11) from the left end of the cast-in-place beam support (4); the slideway support (12) is located below the slideway (7).
2. The sectional type beam construction structure crossing the existing railway line gate pier according to claim 1, wherein:
the construction structure further comprises a beam primary cast-in-place section (1), wherein the beam primary cast-in-place section (1) is positioned at the top of the steel truss of the cast-in-place beam support (4);
the beam is characterized in that I-shaped steel perpendicular to the slide ways (7) is embedded in two ends of the beam primary cast-in-place section (1), brackets (5) are formed on the front side and the rear side of the beam primary cast-in-place section (1), the slide ways (7) are arranged below the brackets (5), and the bottom surfaces of the brackets (5) are higher than the top surfaces of the slide ways (7).
3. The sectional type beam construction structure spanning the gate pier of the existing railway line according to claim 2, wherein:
the bottom surface of bracket (5) is provided with slide (6).
4. The sectional type beam construction structure spanning the gate pier of the existing railway line according to claim 3, wherein:
exposed reinforcing steel bar cylinders (8) are embedded in the end sections of the transverse two ends of the beam primary cast-in-place section (1), and the reinforcing steel bar cylinders (8) are perpendicular to the end sections of the beam primary cast-in-place section (1) and transversely arranged.
5. The sectional type beam construction structure spanning the gate pier of the existing railway line according to claim 4, wherein:
the bottom of the beam primary cast-in-place section (1) is pre-embedded with a corrugated pipe (9), and the corrugated pipe (9) is transversely arranged perpendicular to the cross section of the beam primary cast-in-place section (1);
the corrugated pipe (9) is arranged in the beam primary cast-in-place section (1) in a through mode, and two ends of the corrugated pipe are exposed out of end sections of the transverse two ends of the beam primary cast-in-place section (1).
6. The sectional type beam construction structure spanning the gate pier for the existing railway line according to claim 5, wherein:
the sand box (10) is filled with sand, the height of the steel truss can be reduced by reducing the filling amount of the sand in the sand box (10), and the bracket (5) is made to fall and supported on the slide way (7).
7. The sectional type beam construction structure spanning the gate pier of the existing railway line according to claim 6, wherein:
the construction structure further comprises a beam secondary wet joint section (3), wherein the beam secondary wet joint section (3) is located on two sides of the beam primary cast-in-place section (1), is connected with the end section of the beam primary cast-in-place section (1), and is poured into a whole with the reinforcing steel bar cylinder (8) and the corrugated pipe (9).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220110598.XU CN217104732U (en) | 2022-01-17 | 2022-01-17 | Sectional type crossbeam construction structures of strideing across existing railway line gate-type pier |
| JP2022003487U JP3240244U (en) | 2022-01-17 | 2022-10-20 | Split-type horizontal beam construction structure erected on the gate-type bridge pier of the existing railway line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220110598.XU CN217104732U (en) | 2022-01-17 | 2022-01-17 | Sectional type crossbeam construction structures of strideing across existing railway line gate-type pier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217104732U true CN217104732U (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220110598.XU Active CN217104732U (en) | 2022-01-17 | 2022-01-17 | Sectional type crossbeam construction structures of strideing across existing railway line gate-type pier |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3240244U (en) |
| CN (1) | CN217104732U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117005305A (en) * | 2023-07-05 | 2023-11-07 | 中国铁建港航局集团有限公司 | Construction method for constructing upper capping beam in prestressed concrete common pier section |
-
2022
- 2022-01-17 CN CN202220110598.XU patent/CN217104732U/en active Active
- 2022-10-20 JP JP2022003487U patent/JP3240244U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117005305A (en) * | 2023-07-05 | 2023-11-07 | 中国铁建港航局集团有限公司 | Construction method for constructing upper capping beam in prestressed concrete common pier section |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3240244U (en) | 2022-12-15 |
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