CN111305093A - Self-unloading steel corrugated plate arch culvert - Google Patents
Self-unloading steel corrugated plate arch culvert Download PDFInfo
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- CN111305093A CN111305093A CN202010137996.6A CN202010137996A CN111305093A CN 111305093 A CN111305093 A CN 111305093A CN 202010137996 A CN202010137996 A CN 202010137996A CN 111305093 A CN111305093 A CN 111305093A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
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Abstract
The invention discloses a self-unloading steel corrugated plate arch culvert, which comprises steel corrugated plates of an arch structure, wherein the steel corrugated plates are arranged along the direction of the culvert, and concrete foundations are arranged at arch feet of the steel corrugated plates; the automatic unloading device also comprises a self-unloading unit arranged at the upper part of the steel corrugated plate; the self-unloading unit comprises a plurality of steel pipes which are uniformly distributed on the outer sides of the steel corrugated plates and are distributed along the direction of the culvert, and steel plates are arranged above the steel pipes; in the culvert soil filling process, the steel pipes have certain deformability, the effect of reducing the arch load of the culvert can be achieved, meanwhile, broken stones or sand pebbles can be timely filled between the steel pipes according to the deformation condition of the culvert, further deformation of the steel pipes is limited, and after the soil filling height is reached, grouting is performed through reserved grouting holes, and the integrity and durability of the structure are guaranteed. The invention has the advantages of perfect function, flexibility, simplicity, convenience, environmental protection and high efficiency, greatly reduces the investment of engineering materials, accelerates the construction progress, ensures the construction safety, shortens the construction period and has obvious economic benefit.
Description
Technical Field
The invention relates to the technical field of culvert supporting systems, in particular to a self-unloading steel corrugated steel plate arch culvert.
Background
In recent years, with the rapid improvement of the economic strength and the comprehensive national strength of China, the investment of the nation on the infrastructure is continuously increased. The culvert is used as an important component of a railway and a highway, the engineering quantity of the culvert accounts for about 60 to 70 percent of the total quantity of the bridges and culverts, the construction cost accounts for about 40 percent of the total quantity of the bridges and culverts, and the culvert occupies an important position in engineering construction. The supporting structure of the conventional culvert is mainly made of reinforced concrete, so that the construction efficiency is low, and the economic benefit is not obvious.
Meanwhile, the center of gravity of work is gradually put into the development of low-carbon economy and environmental protection in China. Therefore, the research and development of a safe, stable, rapid, efficient, economical and environment-friendly novel culvert supporting structure has important engineering value and academic value.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the self-unloading arched culvert for the corrugated steel plate, which has the advantages of perfect functions, flexibility, simplicity, convenience, environmental protection and high efficiency, greatly accelerates the construction progress, ensures the construction safety, shortens the construction period and has obvious economic benefit.
The technical scheme adopted by the invention is as follows: a self-unloading steel corrugated plate arch culvert comprises steel corrugated plates of an arch structure, wherein the steel corrugated plates are arranged along the direction of the culvert, and concrete foundations are arranged at arch feet of the steel corrugated plates; the automatic unloading device also comprises a self-unloading unit arranged at the upper part of the steel corrugated plate; the self-unloading unit comprises a plurality of steel pipes which are uniformly distributed outside the steel corrugated plates along the direction of the culvert, and steel plates are arranged above the steel pipes.
Further, a filling layer is arranged between the adjacent steel pipes.
Further, the filling layer is formed by mixing one or two of broken stones or sand pebbles in any proportion
Furthermore, cement slurry is arranged in the steel pipe.
Further, the filling layer and the cement paste are injected through a grouting hole reserved in the steel plate.
Further, the steel corrugated plate is connected with the steel pipe through a bolt.
Further, along the culvert direction, pass through high strength bolted connection between the adjacent steel buckled plate.
Furthermore, the steel plate is made of a Q235 seamless steel plate with the thickness of 15mm, and the steel pipe is made of low-alloy structural steel with the outer diameter of 250mm and the wall thickness of 5 mm.
The invention has the beneficial effects that:
(1) the method is suitable for the rapid construction of the culvert structure, and has the characteristics of safety, economy, environmental protection, energy conservation and the like;
(2) the arch foot of the arched steel corrugated plate is embedded into a concrete foundation to provide horizontal and vertical supporting force for the steel corrugated plate;
(3) according to the self-unloading structure, the steel pipe in the self-unloading structure can generate plastic deformation after being stressed to reach the yield strength, soil body above the steel pipe can generate displacement along with the steel pipe, and the stress of the soil body is redistributed, so that the purpose of releasing the structural load is achieved;
(4) according to the corrugated steel plate, the filling layer is arranged between the steel pipes, so that the stress concentration of the main structure of the corrugated steel plate can be reduced, and the structure safety is ensured;
(5) according to the invention, the cement paste is filled in the steel pipe, so that the further deformation of the structure can be prevented, and the safety is ensured;
(6) the invention has the advantages of perfect function, flexibility, simplicity, convenience, environmental protection and high efficiency, greatly accelerates the construction progress, ensures the construction safety, shortens the construction period and has obvious economic benefit.
Drawings
FIG. 1 is a schematic front view of the present invention.
FIG. 2 is a schematic side view of the present invention.
Fig. 3 is a schematic plan view of the present invention.
Fig. 4 is a construction flow chart in the embodiment of the present invention.
In the figure: 1-steel corrugated plate, 2-steel plate, 3-steel pipe, 4-filling layer, 5-bolt, 6-concrete foundation, 7-cement paste, 8-high-strength bolt and 9-grouting hole.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
As shown in fig. 1 to 3, the self-unloading steel corrugated plate arch culvert comprises steel corrugated plates 1 of an arch structure arranged along the direction of the culvert, wherein concrete foundations 6 are arranged at arch feet of the steel corrugated plates 1; the device also comprises a self-unloading unit arranged at the upper part of the steel corrugated plate 1; the self-unloading unit comprises a plurality of steel pipes 3 which are uniformly distributed outside the steel corrugated plate 1 and are distributed along the direction of the culvert, and steel plates 2 are arranged above the steel pipes 3; the steel pipe 3 can deform under the action of load, and the unloading function is achieved.
And a filling layer 4 is arranged between the adjacent steel pipes 3. The filling layer 4 is formed by mixing one or two of broken stones or sand pebbles in any proportion; cement paste 7 is arranged in the steel pipe 3. The filling layer 4 and the cement paste 7 are injected through the injection holes 9 reserved on the steel plate 2. The steel corrugated plate 1 is connected with the steel pipe 3 through a bolt 5, and the bolt 5 can be a common bolt; the steel pipe 3 and the steel plate 2 are welded. Along the culvert direction, adjacent steel corrugated plates 1 are connected through high-strength bolts 8.
Steel buckled plate 1 adopts prefabricated arch steel buckled plate, and monolithic length can be 10 ~ 15m, adopts high strength bolt 8 to connect between the vertical arch steel buckled plate. The concrete foundation 6 adopts plain concrete of C30; the steel plate 2 is made of a Q235 seamless steel plate with a thickness of 8mm (the thickness can be adjusted to other standard thicknesses according to the design), the steel pipe 3 is made of a low-alloy structural steel with an outer diameter of 250mm (the outer diameter can also be adjusted according to the design) and a wall thickness of 5 (the wall thickness can also be adjusted according to the design), and it is noted that these parameters are recommended values and can be further adjusted according to the design. The diameter of the grouting hole 9 is 60mm, the mark of the cement slurry 7 is C15, wherein the filling height of the filling layer 4 can reach the central position of the steel pipe 3, and the concrete adjustment can be carried out according to the actual engineering.
The prefabricated arched steel corrugated plates 1 are assembled to form an arched bearing structure to bear the soil load. The arch foot of the steel corrugated plate 1 is poured together with the concrete foundation 6, and horizontal and vertical supporting force is provided for the structure of the steel corrugated plate 1. The steel pipe 3 in the self-unloading unit can generate plastic deformation after being stressed to reach the yield strength, soil body above the steel pipe can generate displacement along with the steel pipe, and the stress of the soil body generates redistribution, so that the purpose of releasing the structural load is achieved. The filling layer 4 is composed of broken stones or sand pebbles, and is used for partially filling gaps among the steel pipes 3, so that stress concentration of a main body structure of the steel corrugated plate 1 is reduced, and structural safety is guaranteed. After the deformation exceeds the predetermined deformation amount, cement slurry is injected into the crushed stones or sand pebbles filled in and around the steel pipe 3 from the reserved grouting holes 9, so that the further deformation of the structure is prevented, the safety is ensured, and the corrosion of the structures such as the steel pipe 3 is prevented.
When in specific use, the method comprises the following steps:
step 1: prefabricating an arched steel corrugated plate 1 in a factory, and manufacturing a concrete support on site;
step 2: the arched steel corrugated plates 1 are longitudinally connected on site;
and step 3: the steel pipe 3 is connected with the arched steel corrugated plate 1;
and 4, step 4: completing the connection of the steel pipe 3 and the steel plate 2;
and 5: carrying out back backfilling on the culvert back;
step 6: judging whether the structural deformation is between preset deformation amounts;
and 7: judging whether the structural deformation is between preset deformation amounts;
and 8: ending if the deformation is between the preset deformation amounts; if the deformation is not within the preset deformation, cement slurry is poured into the steel pipe 3 and broken stones or sand pebbles from the reserved grouting holes 9 so as to limit the structural deformation;
and step 9: if the deformation exceeds the preset deformation amount, adopting broken stones or sand pebbles to partially fill the space between the steel pipes 3 so as to limit the deformation;
step 10: continuing the operation of the step 5 and the subsequent steps;
step 11: and (4) reaching the soil filling height, filling the space between the steel pipes with the blow-filled broken stones or sand pebbles, and pouring cement slurry into the steel pipes and the broken stones or sand pebbles from the reserved grouting holes, thus finishing the engineering.
The invention provides a supporting structure system with a self-unloading function for the construction of a culvert, which has the advantages of perfect functions, flexibility, simplicity, convenience, environmental protection and high efficiency, greatly reduces the investment of engineering materials, accelerates the construction progress, ensures the construction safety, shortens the construction period and has obvious economic benefit.
Claims (8)
1. A self-unloading steel corrugated plate arch culvert is characterized by comprising steel corrugated plates (1) of an arch structure arranged along the direction of the culvert, wherein concrete foundations (6) are arranged at arch feet of the steel corrugated plates (1); the device also comprises a self-unloading unit arranged at the upper part of the steel corrugated plate (1); the self-unloading unit comprises a plurality of steel pipes (3) which are uniformly distributed on the outer side of the steel corrugated plate (1) and are distributed along the direction of the culvert, and steel plates (2) are arranged above the steel pipes (3).
2. A self-unloading steel corrugated plate arch culvert according to claim 1, characterized in that a filling layer (4) is arranged between the adjacent steel pipes (3).
3. A self-unloading steel corrugated plate arch culvert according to claim 2, characterized in that the filling layer (4) is formed by mixing one or two of crushed stones or sand pebbles in any proportion.
4. A self-unloading steel corrugated plate arch culvert according to claim 2, characterized in that cement slurry (7) is arranged in the steel pipes (3).
5. A self-unloading steel corrugated plate arch culvert according to claim 4, characterized in that the filling layer (4) and the grout (7) are injected through the grouting holes (9) reserved on the steel plate (2).
6. A self-unloading steel corrugated plate arch culvert according to claim 1, characterized in that the steel corrugated plates (1) are connected with the steel pipes (3) by bolts (5).
7. A self-discharging arched culvert for corrugated steel sheets, according to claim 1, characterized in that, the adjacent corrugated steel sheets (1) are connected by high-strength bolts (8) along the culvert.
8. A self-unloading steel corrugated plate arch culvert according to claim 1, characterized in that the steel plates (2) are made of Q235 seamless steel plates 8mm thick, and the steel pipes (3) are made of low alloy structural steel with an outer diameter of 250mm and a wall thickness of 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010137996.6A CN111305093A (en) | 2020-03-03 | 2020-03-03 | Self-unloading steel corrugated plate arch culvert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010137996.6A CN111305093A (en) | 2020-03-03 | 2020-03-03 | Self-unloading steel corrugated plate arch culvert |
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| Publication Number | Publication Date |
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| CN111305093A true CN111305093A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010137996.6A Pending CN111305093A (en) | 2020-03-03 | 2020-03-03 | Self-unloading steel corrugated plate arch culvert |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073993A (en) * | 2021-04-16 | 2021-07-06 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Damping structure for roadway assembled supporting system |
| CN113463526A (en) * | 2021-07-21 | 2021-10-01 | 中信国安建工集团有限公司 | Road culvert for enhancing stress performance and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001107685A (en) * | 1999-10-05 | 2001-04-17 | Ryoda Sato | Tunnel structure |
| CN202500077U (en) * | 2012-01-10 | 2012-10-24 | 衡水益通金属制品有限责任公司 | Large-span steel corrugated plate arc-shaped supporting structure |
| CN207453998U (en) * | 2017-11-01 | 2018-06-05 | 中交第一公路勘察设计研究院有限公司 | A kind of high ground stress soft rock stress large deformation preliminary bracing system |
| CN109653772A (en) * | 2019-02-03 | 2019-04-19 | 东北大学 | A kind of shallow buried tube curtain support system and its construction method |
| CN110397453A (en) * | 2019-07-19 | 2019-11-01 | 中交第一公路勘察设计研究院有限公司 | The advanced stress release pilot tunnel supporting construction of the assembled of recycling and construction method |
-
2020
- 2020-03-03 CN CN202010137996.6A patent/CN111305093A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001107685A (en) * | 1999-10-05 | 2001-04-17 | Ryoda Sato | Tunnel structure |
| CN202500077U (en) * | 2012-01-10 | 2012-10-24 | 衡水益通金属制品有限责任公司 | Large-span steel corrugated plate arc-shaped supporting structure |
| CN207453998U (en) * | 2017-11-01 | 2018-06-05 | 中交第一公路勘察设计研究院有限公司 | A kind of high ground stress soft rock stress large deformation preliminary bracing system |
| CN109653772A (en) * | 2019-02-03 | 2019-04-19 | 东北大学 | A kind of shallow buried tube curtain support system and its construction method |
| CN110397453A (en) * | 2019-07-19 | 2019-11-01 | 中交第一公路勘察设计研究院有限公司 | The advanced stress release pilot tunnel supporting construction of the assembled of recycling and construction method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073993A (en) * | 2021-04-16 | 2021-07-06 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Damping structure for roadway assembled supporting system |
| CN113463526A (en) * | 2021-07-21 | 2021-10-01 | 中信国安建工集团有限公司 | Road culvert for enhancing stress performance and construction method |
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Application publication date: 20200619 |