CN211735359U - Steel-concrete combined shear pile of long-span arch bridge - Google Patents
Steel-concrete combined shear pile of long-span arch bridge Download PDFInfo
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- CN211735359U CN211735359U CN201922246542.8U CN201922246542U CN211735359U CN 211735359 U CN211735359 U CN 211735359U CN 201922246542 U CN201922246542 U CN 201922246542U CN 211735359 U CN211735359 U CN 211735359U
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Abstract
The utility model relates to a stride arch bridge reinforced concrete combination shearing pile greatly, including reinforced concrete pile, be equipped with at least one shaped steel in the reinforced concrete pile, every shaped steel follows reinforced concrete pile length direction sets up. An application a stride a bridge steel-concrete combination shearing pile greatly set up in the reinforced concrete pile shaped steel forms steel-concrete combination shearing pile, through the anti shearing bearing capacity of shaped steel improves stake itself to the bearing capacity of arch bridge level to the load, and the stake basis itself receives the geological conditions restriction little, this shearing pile simple structure, the durability is high, and the work progress is simple, construction cycle is short, the construction safety is high, can solve the problem that conventional reinforced concrete pile anti shearing bearing capacity is not enough and needs great more pile group basis under the condition that does not increase the stake number to save the investment.
Description
Technical Field
The utility model relates to a pile foundation field, especially a long span arch bridge steel reinforced concrete combination shear pile.
Background
The pile foundation is a foundation form commonly used in civil engineering, the pile directly bears the force transmitted by the upper structure and transmits the force to the stable foundation bearing layer, and the pile foundation has enough strength and rigidity and stable stress form and is widely applied to bridge engineering.
For the arch bridge, the superstructure of the arch bridge can convert a large part of dead weight and load into internal compressive stress, and due to the characteristic, compared with bridges of other structural forms, the load transmitted to the foundation by the arch bridge has a large horizontal load besides vertical load, so that the existing long-span arch bridge usually adopts open cut enlarged foundation or pile foundation.
However, the open cut enlarged foundation has extremely high requirements on the properties of the foundation bearing layer, and a rock layer with higher bearing capacity is required to be used as the bearing layer, so that the construction cost is increased sharply for the geological condition with a thicker covering layer, and the foundation form is obviously not suitable under the condition of limited cost budget; pile group foundation horizontal bearing capacity is less, and for the arch bridge of small span, its horizontal load that passes to the basis is less, can consider using pile group foundation, however, for the arch bridge of large span, because its horizontal load that passes to the basis is very big, for example: can reach over 200000KN, so if pile group foundations are still adopted, the construction cost is also increased sharply.
Based on the above, need design a novel arch bridge foundation structure that is applicable to long-span arch bridge at present, can resist great level to the load and can practice thrift construction cost.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: aiming at the problems that the foundation of the large-span arch bridge in the prior art is greatly limited by geological conditions when resisting larger horizontal load and the construction cost is high, the steel-concrete combined shear pile of the large-span arch bridge is provided.
In order to realize the purpose, the utility model discloses a technical scheme be:
the reinforced concrete combined shear pile for the large-span arch bridge comprises a reinforced concrete pile, wherein at least one section steel is arranged in the reinforced concrete pile, and each section steel is arranged along the length direction of the reinforced concrete pile.
The steel-concrete combined shear pile can adopt a bored pile construction process, the process is mature in technology, safe and reliable, the construction period can be saved, the construction difficulty is reduced, the construction safety is guaranteed, and the applicability is wider.
Adopt a stride a bridge steel-concrete combination shearing pile greatly set up in the reinforced concrete pile shaped steel forms steel-concrete combination shearing pile, through the anti shearing bearing capacity of shaped steel improves the stake itself to the bearing capacity of arch bridge level to the load, and the stake basis itself receives the geological conditions restriction little, this shearing pile simple structure, the durability is high, and the work progress is simple, construction cycle is short, the construction safety is high, can solve the problem that conventional reinforced concrete pile anti shearing bearing capacity is not enough and needs great more pile group basis under the condition that does not increase the stake number to save the investment.
Preferably, at least one of the section steels is located at the centroid of the reinforced concrete pile.
Preferably, the web of each section steel is arranged in a direction perpendicular to the length direction of the arch bridge.
With this structure, since the web in the section steel has a large area, a large shearing resistance can be provided as a main shearing direction.
Preferably, the section steel is H-shaped steel, and the H-shaped steel is stable in structure and good in shearing resistance.
Preferably, each section steel is located at the lower part in the reinforced concrete pile, extends out of the top of the reinforced concrete pile at the upper part, and is used for connecting with an arch foundation of an arch bridge at the upper part.
By adopting the structure, the connection between the steel-concrete combined shear pile and an external structure is met under the condition that the shear requirement of the steel-concrete combined shear pile is met.
Preferably, 1/2-4/5 lengths of each of the section steels are located within the reinforced concrete pile, and 1/5-1/2 lengths of each of the section steels protrude out of the top of the reinforced concrete pile.
Preferably, 2/3 lengths of each of the section steels are located within the reinforced concrete pile, and 1/3 lengths of each of the section steels extend out of the top of the reinforced concrete pile.
Preferably, each flange plate of the profile steel is provided with a shear nail, so that the effective connection of the steel-concrete structure is ensured.
Preferably, a shear nail is arranged on a web plate of each section steel, so that effective connection of the steel-concrete structure is guaranteed.
Preferably, a plurality of reinforced concrete piles are connected to the lower portion of the arch base of the arch bridge.
Preferably, all of the reinforced concrete piles are vertically arranged.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the steel-concrete combined shear pile for the long-span arch bridge is applied, the profile steel is arranged in the reinforced concrete pile to form the steel-concrete combined shear pile, the bearing capacity of the pile to the horizontal load of the arch bridge is improved through the shear-resistant bearing capacity of the profile steel, the pile foundation is limited slightly by geological conditions, the shear-resistant pile is simple in structure, high in durability, simple in construction process, short in construction period and high in construction safety, and the problem that the conventional reinforced concrete pile needs larger and more pile group foundations due to insufficient shear-resistant bearing capacity can be solved under the condition that the pile number is not increased, so that the investment is saved;
2. by applying the steel-concrete combined shear pile for the long-span arch bridge, the web plate setting direction of each profile steel is vertical to the length direction of the arch bridge, and the web plate in the profile steel has larger area and can provide larger shear resistance as a main shear resistance direction;
3. by applying the steel-concrete combined shear pile for the long-span arch bridge, the lower part of each profile steel is positioned in the reinforced concrete pile, the upper part of the profile steel extends out of the top of the reinforced concrete pile, and the upper part of each profile steel is used for connecting the arch base foundation of the arch bridge, so that the connection between the steel-concrete combined shear pile and an external structure is simultaneously met under the condition that the shear requirement of the steel-concrete combined shear pile is met;
4. an application a stride arch bridge steel-concrete combination shear pile greatly, every be equipped with the shear force nail on the flange board of shaped steel, every be equipped with the shear force nail on the web of shaped steel, guarantee the effective connection of steel-concrete structure.
Drawings
Fig. 1 is a schematic structural view of a steel-concrete combined shear pile for a long-span arch bridge according to the present invention;
FIG. 2 is a bottom view of FIG. 1;
fig. 3 is a schematic view of a connection relationship between a steel-concrete combined shear pile and an arch base.
The labels in the figure are: the method comprises the following steps of 1-reinforced concrete pile, 2-section steel, 21-web plate, 22-flange plate, 23-shear nail and 3-arch foundation.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Examples
As shown in figures 1-3, a long-span arch bridge reinforced concrete combination shear pile, including reinforced concrete pile 1, be equipped with a shaped steel 2 in the reinforced concrete pile 1.
As shown in fig. 1 and 2, the section steel 2 is H-shaped steel, the H-shaped steel includes a web 21 and flange plates 22 connected to two ends of the web 21, the section steel 2 is arranged along the length direction of the reinforced concrete pile 1, the web 21 is located at the centroid of the reinforced concrete pile 1, and the web 21 is perpendicular to the arch bridge length direction.
As shown in fig. 2 and 3, 2/3 lengths of each section steel 2 are located in the reinforced concrete pile 1, 1/3 lengths of each section steel 2 extend out of the top of the reinforced concrete pile 1, the upper part of each section steel 2 is used for connecting an arch base 3 of an arch bridge, by adopting the structure, the connection between the reinforced concrete pile and an external structure is simultaneously met under the condition that the shearing resistance requirement of the reinforced concrete pile is met, a plurality of reinforced concrete piles 1 are connected below the arch base 3 of the arch bridge, and all the reinforced concrete piles 1 are vertically arranged.
As shown in fig. 1 and 2, the web 21 and each flange plate 22 are provided with shear nails 23, which ensure effective connection of the steel-concrete structure.
The steel-concrete combined shear pile can adopt a bored pile construction process, the process is mature in technology, safe and reliable, the construction period can be saved, the construction difficulty is reduced, the construction safety is guaranteed, and the applicability is wider.
The steel-concrete combined shear pile for the long-span arch bridge is applied, the steel section 2 is arranged in the reinforced concrete pile 1 to form the steel-concrete combined shear pile, because the H-shaped steel has stable structure and good shearing resistance, the web plate 21 in the section steel 2 has larger area and can provide larger shearing resistance as the main shearing resistance direction, the shear-resistant bearing capacity of the section steel 2 is utilized to improve the bearing capacity of the pile to the horizontal load of the arch bridge, the pile foundation is slightly limited by geological conditions, the shear pile has simple structure, high durability, simple construction process, short construction period and high construction safety, can solve the problem that the conventional reinforced concrete pile needs larger and more pile group foundations due to insufficient shear bearing capacity without increasing the number of piles, therefore, investment is saved, and through calculation and analysis, the shear-resistant bearing capacity of the large-span arch bridge steel-concrete combined shear-resistant pile is improved by 50% -64% compared with that of a conventional reinforced concrete pile with the same design.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The large-span arch bridge steel-concrete combined shear pile is characterized by comprising a reinforced concrete pile (1), wherein at least one section steel (2) is arranged in the reinforced concrete pile (1), and each section steel (2) is arranged along the length direction of the reinforced concrete pile (1);
and shear nails (23) are arranged on the flange plates (22) of each section steel (2).
2. A long span arch bridge steel-concrete combination shear pile according to claim 1, characterized in that at least one of the section steels (2) is located at the centroid of the reinforced concrete pile (1).
3. The long span arch bridge steel-concrete combination shear pile of claim 1, wherein the web (21) of each of the section steels (2) is arranged in a direction perpendicular to the arch bridge length direction.
4. The long-span arch bridge steel-concrete combined shear pile according to claim 1, wherein the section steel (2) is an H-shaped steel.
5. The long-span arch bridge steel-concrete combination shear pile of claim 1, wherein each of the section steels (2) is located at a lower portion in the reinforced concrete pile (1) and extends out of an upper portion of the reinforced concrete pile (1), and each of the section steels (2) is used for connecting with an arch base (3) of an arch bridge.
6. A long span arch bridge steel-concrete combination shear pile according to claim 5, characterized in that 1/2-4/5 length of each section steel (2) is located inside the reinforced concrete pile (1), and 1/5-1/2 length of each section steel (2) protrudes out of the top of the reinforced concrete pile (1).
7. A long-span arch bridge steel-concrete combination shear pile according to claim 6, characterized in that 2/3 lengths of each section steel (2) are located inside the reinforced concrete pile (1), and 1/3 lengths of each section steel (2) extend out of the top of the reinforced concrete pile (1).
8. A long span arch bridge steel-concrete combination shear pile according to any one of claims 1-7, characterized in that a plurality of said reinforced concrete piles (1) are connected under the arch base (3) of the arch bridge.
9. The long-span arch bridge steel-concrete combination shear pile of claim 8, wherein all the reinforced concrete piles (1) are vertically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922246542.8U CN211735359U (en) | 2019-12-13 | 2019-12-13 | Steel-concrete combined shear pile of long-span arch bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922246542.8U CN211735359U (en) | 2019-12-13 | 2019-12-13 | Steel-concrete combined shear pile of long-span arch bridge |
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| CN211735359U true CN211735359U (en) | 2020-10-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172972A (en) * | 2019-12-13 | 2020-05-19 | 中铁二院工程集团有限责任公司 | Steel-concrete combined shear pile of long-span arch bridge |
| CN114673140A (en) * | 2022-03-22 | 2022-06-28 | 浙江工业大学 | Structure for connecting variable cross-section nodes of H-shaped steel-RC (reinforced concrete) stepped pile and construction method of structure |
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2019
- 2019-12-13 CN CN201922246542.8U patent/CN211735359U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172972A (en) * | 2019-12-13 | 2020-05-19 | 中铁二院工程集团有限责任公司 | Steel-concrete combined shear pile of long-span arch bridge |
| CN114673140A (en) * | 2022-03-22 | 2022-06-28 | 浙江工业大学 | Structure for connecting variable cross-section nodes of H-shaped steel-RC (reinforced concrete) stepped pile and construction method of structure |
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