CN220847057U - Hoisting construction railway simply supported beam - Google Patents
Hoisting construction railway simply supported beam Download PDFInfo
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- CN220847057U CN220847057U CN202322596199.6U CN202322596199U CN220847057U CN 220847057 U CN220847057 U CN 220847057U CN 202322596199 U CN202322596199 U CN 202322596199U CN 220847057 U CN220847057 U CN 220847057U
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- precast
- beams
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- simply supported
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- 238000011065 in-situ storage Methods 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 230000000903 blocking effect Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005192 partition Methods 0.000 abstract 4
- 239000011150 reinforced concrete Substances 0.000 description 5
- 241001669679 Eleotris Species 0.000 description 3
- 238000009417 prefabrication Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to the technical field of railway bridges, in particular to a hoisting construction railway simply supported beam, which comprises precast beams, transverse partition plates and cast-in-situ bridge decks, wherein the precast beams are arranged at intervals, the transverse partition plates are arranged between the precast beams, the transverse partition plates at the beam ends connect the adjacent precast beams into a whole, and the cast-in-situ bridge decks are arranged above the precast beams and the transverse partition plates through cast-in-situ construction; the precast beam comprises precast side beams and precast middle beams. The utility model has the advantages that: the method has strong practicability, and solves the problem of limited construction weight of the girder erection; the construction is convenient, economical and reasonable, the effect is good, and the popularization and use value are very high.
Description
Technical Field
The utility model relates to the technical field of railway bridges, in particular to a hoisting construction railway simply supported beam which is mainly applied to a ballasted track simply supported beam.
Background
The railway simply supported beam mainly comprises a T beam and a box beam. The simply supported beam is the most main beam type of the railway bridge, the railway with the speed of more than 200km per hour generally adopts a box beam, and the railway with the speed of 200km per hour and below generally adopts a T beam. The simple box girder and the simple T-shaped girder can be constructed by adopting methods such as factory prefabrication on-site bridge girder erection machine erection construction, on-site pouring and the like.
The domestic simply supported T-beam mainly adopts prefabricated erection, and part of simply supported T-beams with less net height control or less hole number adopt cast-in-place, but the cast-in-place quality is difficult to control due to the small cross section size of the T-beam. In part of foreign railway engineering, due to poor site construction conditions and lack of large-scale equipment such as bridge girder erection machines, only small crane equipment meets girder erection conditions.
Therefore, it is very important to find a light simply supported T-beam for prefabrication hoisting construction.
Disclosure of Invention
According to the defects of the prior art, the utility model provides the simple girder for hoisting construction railway, the girder adopts factory prefabrication site hoisting construction, the construction quality of a main body structure is effectively ensured, the condition that foreign railway construction equipment is limited is met, and the precast girder is connected into a whole by adopting the diaphragm plate and the cast-in-situ bridge deck, so that the whole stress requirement of the girder body is ensured.
The utility model is realized by the following technical scheme:
A hoisting construction railway simply supported beam is characterized in that: the cast-in-situ bridge deck comprises precast beams, diaphragm plates and cast-in-situ bridge decks, wherein the precast beams are arranged at intervals, the diaphragm plates are arranged between the precast beams, the diaphragm plates at the beam ends connect the adjacent precast beams into a whole, and the cast-in-situ bridge decks are arranged above the precast beams and the diaphragm plates through cast-in-situ construction; the precast beam comprises precast side beams and precast middle beams.
And the diaphragm plate adopts prestress steel strands or steel bars to connect a plurality of precast beams in series into a whole.
The top surfaces of the precast side beams and the precast beam faces are provided with reserved steel bars, and the reserved steel bars are connected with the steel bars in the cast-in-situ bridge deck into a whole.
The prefabricated side beams and the prefabricated middle beams are of T type or I type.
The cast-in-situ bridge deck is provided with water draining holes which are arranged at intervals along the longitudinal bridge direction and are respectively arranged on two sides along the transverse bridge, and the water draining holes are arranged at the gap positions between the precast beams.
One side of the cast-in-situ bridge deck is provided with a ballast blocking wall and a vertical wall, and the other side of the cast-in-situ bridge deck is provided with a vehicle avoidance platform.
And a cable groove is arranged between the ballast blocking wall and the vertical wall and is sealed by a cable groove cover plate.
The utility model has the advantages that: the method has strong practicability, and solves the problem of limited construction weight of the girder erection; the construction is convenient, economical and reasonable, the effect is good, and the popularization and use value are very high.
Drawings
FIG. 1 is a cross-sectional view of a beam end of the present utility model;
FIG. 2 is a cross-sectional view of the mid-span of the present utility model;
fig. 3 is an elevation view of the present utility model.
Description of the embodiments
The features of the utility model and other related features are described in further detail below by way of example in conjunction with the following figures to facilitate understanding by those skilled in the art:
As shown in fig. 1-2, reference numerals 1-13 are respectively represented as: the side beam comprises a prefabricated side beam 1, a prefabricated middle beam 2, a diaphragm plate 3, a cast-in-situ bridge deck 4, a water drain hole 5, a blocking ballast wall 6, a vertical wall 7, a cable trough cover plate 8, a railing 9, a vehicle avoidance platform 10, railway ballasts 11, sleepers 12 and steel rails 13.
Examples: as shown in fig. 1 to 3, in this embodiment, a simply supported girder for a hoisting construction railway is produced by first producing a prefabricated side girder 1 and a prefabricated middle girder 2 in a factory, then hoisting the prefabricated side girder 1 and the prefabricated middle girder 2 to a bridge abutment by using an automobile crane after transporting the prefabricated side girder to an engineering site, and then connecting the prefabricated side girder 1 and the prefabricated middle girder 2 by using a diaphragm 3, and finally integrally prefabricating Liang Liancheng by using a cast-in-situ bridge deck 4. The construction of the simply supported beam is completed after the cast-in-situ ballast blocking wall 6, the vertical wall 7 and the vehicle avoiding platform 10 are cast-in-situ on the cast-in-situ bridge deck 4, the cable trough cover plate 8 and the railing 9 are installed; the bridge deck lays railway ballast 11, sleeper 12, rail 13.
Specifically, as shown in fig. 1 and 2, when the railway simply supported beam in the present embodiment is applied to a single railway, it may be formed by connecting two side beams 1 with two center beams 2 and a cast-in-place bridge deck 4. When the railway simply supported beam of the embodiment is applied to a double-track railway, the bridge deck arrangement requirement can be met by combining the line spacing increasing center sill 2.
In order to meet the hoisting conditions of the automobile crane, the weights of the single beam bodies of the prefabricated side beams 1 and the prefabricated middle beam 2 are controlled to be below 40 tons, and the conditions are specifically selected in combination with the construction machinery equipment. The span of the universal beam is 20m, and the span of the bridge can be adjusted by combining specific spanning work points.
The prefabricated boundary beam 1 and the prefabricated middle beam 2 are of T type or I type, the top surface widths of the prefabricated boundary beam 1 and the prefabricated middle beam 2 are adjustable in combination with the bridge deck width requirement, the beam height of the prefabricated boundary beam 1 or the prefabricated middle beam 2 with the span of 20m is 1.6m, and the concrete size of the beam body is calculated and determined in combination with the bridge deck load and the bridge span. The gaps between the top surfaces of the prefabricated side beams 1 and the prefabricated middle beams 2 are about 0.6m to 0.8m, and are determined by combining the bridge deck width.
The precast boundary beam 1 and the precast middle beam 2 are both prestressed concrete structures, and are produced in a precast factory, after the construction of the lower structure of the bridge working point is completed, the precast boundary beam is transported to the site, and is hoisted to a pier by adopting an automobile crane, and temporary fixing measures are taken before the construction of the diaphragm plate 3 to ensure that the beam body is stable and prevent rollover.
The diaphragm plate 3 is of a reinforced concrete structure and is prefabricated in a beam field together with the prefabricated side beams 1 and the prefabricated middle beam 2. The longitudinal bridge of the diaphragm plate 3 is 0.4m to 0.6m wide, and the diaphragm plate 3 at the beam end is formed by connecting the prefabricated side beam 1 and the prefabricated middle beam 2 into a whole in series by using prestressed steel strands or steel bars. The gaps of the diaphragm plates 3 between the precast side beams 1 and the precast middle beams 2 are connected by reinforced concrete.
After the construction of the precast boundary beam 1, the precast middle beam 2 and the diaphragm plate 3 is completed, a bridge deck 4 is cast in place on the top surfaces of the boundary beam and the middle beam, the thickness of a cast-in-place layer is about 15cm, and a reinforced concrete structure is adopted to connect the reserved reinforcing steel bars on the top surface of the precast beam and the cast-in-place reinforcing steel bars into a whole, so that the construction of the beam body is completed. The bridge deck of the cast-in-situ bridge deck 4 is provided with a drainage slope of 2 percent, and the bridge deck rainwater is collected to the position of the drainage hole 5.
As shown in fig. 2, the drainage holes 5 are arranged about 4m each in the longitudinal direction, the transverse bridge is respectively arranged on two sides of the bridge deck, and the gaps between the prefabricated side beams 1 and the prefabricated middle beam 2 are used for draining the bridge deck rainwater out of the beam body.
The blocking ballast wall 6 and the vertical wall 7 are reinforced concrete structures and can be integrally poured together with the cast-in-situ bridge deck 4.
The cable trough cover plate 8 is of a reinforced concrete structure, is arranged on the top surfaces of the blocking ballast wall 6 and the vertical wall 7 after being prefabricated in a factory, and cables can be arranged below the cover plate.
The railing 9 is a steel railing and is installed on the top surface of the vertical wall 7 on site.
The vehicle avoidance platform 10 is only arranged at the top beam end of the bridge pier, the single-line bridge is only arranged at one side of the railway, and the bridge deck is widened by about 0.6m at the position without the vehicle avoidance platform, so that the vehicle avoidance of maintenance personnel is facilitated.
After the auxiliary construction of the bridge main body and the bridge deck is completed, the railway ballast 11, the sleeper 12, the steel rail 13 and the like can be paved, so that the railway construction is completed.
The embodiment can comprise the following steps in construction:
The method comprises the steps of prefabricating a boundary beam 1, prefabricating a middle beam 2 and a diaphragm plate 3 in a factory, transporting the prefabricated beam to the site after pier construction is completed, connecting the prefabricated beam into a whole by the diaphragm plate 3, constructing a cast-in-situ bridge deck 4, a water drain hole 5, a vehicle avoidance platform 10 at the beam end, constructing a ballast blocking wall 6, a vertical wall 7, installing a cable trough cover plate 8 and a railing 9, paving railway ballasts 11, sleeper 12 and steel rails 13.
Although the foregoing embodiments have been described in some detail with reference to the accompanying drawings, it will be appreciated by those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the utility model as defined in the appended claims, and thus are not repeated herein.
Claims (7)
1. A hoisting construction railway simply supported beam is characterized in that: the cast-in-situ bridge deck comprises precast beams, diaphragm plates and cast-in-situ bridge decks, wherein the precast beams are arranged at intervals, the diaphragm plates are arranged between the precast beams, the diaphragm plates at the beam ends connect the adjacent precast beams into a whole, and the cast-in-situ bridge decks are arranged above the precast beams and the diaphragm plates through cast-in-situ construction; the precast beam comprises precast side beams and precast middle beams.
2. The hoisting construction railway simply supported beam as claimed in claim 1, wherein: and the diaphragm plate adopts prestress steel strands or steel bars to connect a plurality of precast beams in series into a whole.
3. The hoisting construction railway simply supported beam as claimed in claim 1, wherein: the top surfaces of the precast side beams and the precast beam faces are provided with reserved steel bars, and the reserved steel bars are connected with the steel bars in the cast-in-situ bridge deck into a whole.
4. The hoisting construction railway simply supported beam as claimed in claim 1, wherein: the prefabricated side beams and the prefabricated middle beams are of T type or I type.
5. The hoisting construction railway simply supported beam as claimed in claim 1, wherein: the cast-in-situ bridge deck is provided with water draining holes which are arranged at intervals along the longitudinal bridge direction and are respectively arranged on two sides along the transverse bridge, and the water draining holes are arranged at the gap positions between the precast beams.
6. The hoisting construction railway simply supported beam as claimed in claim 1, wherein: one side of the cast-in-situ bridge deck is provided with a ballast blocking wall and a vertical wall, and the other side of the cast-in-situ bridge deck is provided with a vehicle avoidance platform.
7. The hoisting construction railway simply supported beam as claimed in claim 6, wherein: and a cable groove is arranged between the ballast blocking wall and the vertical wall and is sealed by a cable groove cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322596199.6U CN220847057U (en) | 2023-09-25 | 2023-09-25 | Hoisting construction railway simply supported beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322596199.6U CN220847057U (en) | 2023-09-25 | 2023-09-25 | Hoisting construction railway simply supported beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220847057U true CN220847057U (en) | 2024-04-26 |
Family
ID=90743429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322596199.6U Active CN220847057U (en) | 2023-09-25 | 2023-09-25 | Hoisting construction railway simply supported beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220847057U (en) |
-
2023
- 2023-09-25 CN CN202322596199.6U patent/CN220847057U/en active Active
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