CN217439165U - Long-span permanent light falling object protection shed frame under railway bridge - Google Patents
Long-span permanent light falling object protection shed frame under railway bridge Download PDFInfo
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- CN217439165U CN217439165U CN202220440202.8U CN202220440202U CN217439165U CN 217439165 U CN217439165 U CN 217439165U CN 202220440202 U CN202220440202 U CN 202220440202U CN 217439165 U CN217439165 U CN 217439165U
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Abstract
The permanent light-duty falling object protection rack of large-span under the railroad bridge to effectively ensure the operation safety of underpass road, compromise security, durability, aesthetic property and economic nature simultaneously, and easily be under construction and maintain. The protective shed frame comprises a profile steel arch frame, horizontal stiffening rods, a shed frame top surface connecting system and a shed frame side surface connecting system, wherein the profile steel arch frame crossing the underpass structure is arranged at intervals in the extension direction of the underpass structure, the lower ends of two sides of the profile steel arch frame are connected with a shed frame foundation in an anchoring manner through embedded foundation bolts, the two ends of each horizontal stiffening rod are respectively connected with arc sections at the tops of two sides of the profile steel arch frame into a whole, and a stiffening rod system is arranged between the top of the profile steel arch frame and each horizontal stiffening rod to form a truss structure; the steel arch frames are connected into a whole by a shed frame top surface connecting system and a shed frame side surface connecting system; the protective net is laid on the top surface of the protective shed frame and is fixedly connected with the section steel arch frame and the top surface of the shed frame.
Description
Technical Field
The utility model relates to a wooden soil engineering, in particular to permanent light-duty drop protection rack suitable for under railway bridge roof beam.
Background
In recent years, the number of roads and municipal engineering projects under which existing railway bridges are penetrated is increasing, and in order to prevent railway operation and maintenance processes from possibly causing the falling of railway ballasts or other light foreign matters, protective shed frames are required to be arranged in the falling range of the railway ballasts and the foreign matters under the existing railway bridges to ensure the safety of driving under the bridges and pedestrians. When the urban road is provided with the protective shed frame, the aesthetic property of the urban road is often considered.
At present, this type of structure divide into reinforced concrete protection rack and steel construction protection rack, connects through basis, stand, crossbeam, longeron and protection network and forms wholly. When the span of the protective shed frame is more than 20m, the mechanical property of the reinforced concrete shed frame is poor, the structure mainly bears the effect of self weight, when the protective shed frame is arranged on a underpass bridge structure, the load of a beam body is greatly increased, the economical efficiency and the aesthetic property are poor, and the construction of erecting and pouring the support on site is not as convenient as the construction of a steel structure shed frame. The protection canopy frame of traditional steel construction mainly used constructs the protection temporarily, and the span is less than 20m usually, and aesthetic property and long-term suitability are relatively poor.
Engineering practices that the protection canopy frame under the railway bridge sets up show that a novel canopy frame structural style is urgently needed, especially for the protection canopy frame with the span being greater than 20m, safety, durability, attractiveness and economical efficiency are comprehensively considered, and construction and maintenance are easy to achieve, so that the operation safety of underpass roads is ensured.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a permanent light-duty drop of large-span protection rack under railway bridge is provided to effective guarantee is worn road operation safety down, compromises security, durability, aesthetic property and economic nature simultaneously, and easily is under construction and is maintained.
The utility model provides a technical scheme that its technical problem adopted as follows:
the utility model discloses a permanent light-duty falling object protection rack of large-span under railway bridge roof beam, including protection rack and protection network, characterized by: the protective shed frame comprises a profile steel arch frame, horizontal stiffening rods, a shed frame top surface connecting system and a shed frame side surface connecting system, wherein the profile steel arch frame crossing the underpass structure is arranged at intervals in the extending direction of the underpass structure, the lower ends of the two sides of the profile steel arch frame are connected with a shed frame foundation anchor through embedded foundation bolts, the two ends of each horizontal stiffening rod are respectively connected with arc sections at the top of the two sides of the profile steel arch frame into a whole, and a stiffening rod system is arranged between the top of each profile steel arch frame and each horizontal stiffening rod to form a truss structure; the steel arch frames are connected into a whole by a shed frame top surface connecting system and a shed frame side surface connecting system; the protective net is laid on the top surface of the protective shed frame and is fixedly connected with the section steel arch frame and the top surface of the shed frame.
The utility model has the advantages that the protective shed frame can be arranged on a underpass road or bridge structure, thereby effectively preventing the adverse effect of light falling objects, being applicable to various spans, in particular to a large-span protective shed frame; the protective shed frame adopts section steel, can be welded and assembled on site, and is convenient to construct; the profile steel arch is formed by connecting a plurality of sections of circular arcs, and the midspan micro-arch can effectively reduce midspan deformation of the profile steel arch and has attractive appearance; the dead weight of the steel structure shed frame is obviously reduced compared with that of a concrete shed frame, the mechanical property is more reasonable, and the economic performance is better; the protective shed frame is easy to maintain and can be used for a long time. In conclusion, the structure has the advantages of safety, durability, attractiveness, economy, easiness in construction and maintenance and wide popularization prospect.
Drawings
The specification includes the following five figures:
FIG. 1 is a cross-sectional view of the long-span permanent light falling object protection shed under the railroad bridge of the present invention;
FIG. 2 is a top plan view of the long-span permanent light falling object protection canopy frame under the railroad bridge of the present invention;
FIG. 3 is a side elevation view of the long-span permanent light falling object protection canopy frame under the railroad bridge of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 5 is a top protective net diagram of the large-span permanent light falling object protective shed frame under the railroad bridge.
The figures show the components and corresponding references: the shed frame comprises a shed frame foundation 11, pre-embedded foundation bolts 12, a section steel arch 21, an arch frame horizontal stiffening rod 22, a vertical stiffening rod 23, an oblique stiffening rod 24, a shed frame top surface connecting system 31, a shed frame side surface connecting system 32, a protective net 40 and a lower-penetrating structure M.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Referring to fig. 1, the utility model discloses a permanent light-duty falling object protection rack of large-span under railway bridge roof beam, including protection rack and protection network 40, the protection rack includes shaped steel bow member 21, horizontal stiffening rod 22, rack top surface coupling system 31 and rack side coupling system 32, spanes down the shaped steel bow member 21 of wearing structure M and wears the extending direction interval setting of structure M under, and its both sides lower extreme is connected with 11 anchors of rack foundation through pre-buried rag bolt 12, and horizontal stiffening rod 22 both ends are connected as an organic wholely with shaped steel bow member 21's both sides top segmental arc respectively, sets up the stiffening rod system between shaped steel bow member 21 top and the horizontal stiffening rod 22 and forms truss structure. Referring to fig. 2 and 3, the steel arch 21 is integrally connected to form a protective canopy frame by a canopy frame top surface connecting system 31 and a canopy frame side surface connecting system 32. The protective net 40 is laid on the top surface of the protective shed frame and is fixedly connected with the section steel arch 21 and the connecting system 31 on the top surface of the shed frame.
Referring to fig. 1, the section steel arch 21 is formed by connecting a plurality of sections of circular arcs, and the midspan micro-arch can effectively reduce midspan deformation of the section steel arch and has attractive appearance. The dead weight of the steel structure shed frame is obviously reduced compared with that of a concrete shed frame, the mechanical property is more reasonable, and the steel structure shed frame has better economical efficiency. The span of the protective shed frame is increased by arranging the horizontal stiffening rods 22 and the stiffening rod system, so that the protective shed frame can span an underpass structure M (a roadbed or a bridge), and the operation safety of an underpass road is effectively guaranteed.
Referring to fig. 1, the stiffener system includes vertical stiffeners 23 disposed at intervals in the length direction of the horizontal stiffeners 22, and inclined stiffeners 24 disposed between adjacent vertical stiffeners 23, and both ends of each vertical stiffener 23 and each inclined stiffener 24 are respectively fixedly connected to the steel arch 21 and the horizontal stiffeners 22.
Referring to fig. 4, the section steel arch 21 has an H-shaped or box-shaped section. Referring to fig. 2 and 3, the top surface connecting system 31 of the canopy frame is connected with the top arc section of the steel arch 21 into a whole, the connecting system rods can be arranged in a diamond shape, the side surface connecting system 32 of the canopy frame is connected with the middle straight section of the steel arch 21 into a whole, the connecting mode can be welding or bolting, and the connecting system rods can be seamless steel pipes. Referring to fig. 5, the protective net 4 is connected with the steel arch 21 and the roof connecting system 31 into a whole, and the grid spacing of the protective net 4 is generally not more than 5 mm.
The above is only used for illustrating some principles of the long-span permanent light falling object protection canopy frame under the railroad bridge, not to limit the utility model to show and the concrete structure and application scope in, so all corresponding modifications and equivalents that may be utilized all belong to the patent scope applied by the utility model.
Claims (4)
1. Permanent light-duty thing protection rack that falls of large-span under railway bridge, including protection rack and protection network (40), characterized by: the protective shed frame comprises a section steel arch frame (21), horizontal stiffening rods (22), a shed frame top surface connecting system (31) and a shed frame side surface connecting system (32), the section steel arch frame (21) crossing the lower-penetrating structure (M) is arranged at intervals in the extending direction of the lower-penetrating structure (M), the lower ends of two sides of the section steel arch frame are in anchoring connection with a shed frame foundation (11) through embedded foundation bolts (12), two ends of each horizontal stiffening rod (22) are respectively connected with arc sections at the tops of two sides of the section steel arch frame (21) into a whole, and a stiffening rod system is arranged between the top of the section steel arch frame (21) and each horizontal stiffening rod (22) to form a truss structure; the various steel arch frames (21) are connected into a whole by a frame top surface connecting system (31) and a frame side surface connecting system (32); the protective net (40) is laid on the top surface of the protective shed frame and is fixedly connected with the section steel arch frame (21) and the connecting system (31) on the top surface of the shed frame.
2. The large-span permanent light falling object protection canopy frame under a railroad bridge of claim 1, characterized in that: the stiffening rod system includes vertical stiffening rod (23) that the interval set up on horizontal stiffening rod (22) length direction to and set up slant stiffening rod (24) between adjacent vertical stiffening rod (23), the both ends of each vertical stiffening rod (23), slant stiffening rod (24) respectively with shaped steel bow member (21), horizontal stiffening rod (22) fixed connection.
3. The large-span permanent light falling object protection canopy frame under a railroad bridge of claim 1, characterized in that: the section of the profile steel arch (21) is H-shaped or box-shaped.
4. The large-span permanent light falling object protection canopy frame under a railroad bridge of claim 1, characterized in that: the underpass structure (M) is a roadbed or a bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220440202.8U CN217439165U (en) | 2022-03-01 | 2022-03-01 | Long-span permanent light falling object protection shed frame under railway bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220440202.8U CN217439165U (en) | 2022-03-01 | 2022-03-01 | Long-span permanent light falling object protection shed frame under railway bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217439165U true CN217439165U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220440202.8U Active CN217439165U (en) | 2022-03-01 | 2022-03-01 | Long-span permanent light falling object protection shed frame under railway bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217439165U (en) |
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2022
- 2022-03-01 CN CN202220440202.8U patent/CN217439165U/en active Active
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