CN112813848A - Supporting structure for platform erection based on steel pile foundation and construction method - Google Patents
Supporting structure for platform erection based on steel pile foundation and construction method Download PDFInfo
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- CN112813848A CN112813848A CN202110186971.XA CN202110186971A CN112813848A CN 112813848 A CN112813848 A CN 112813848A CN 202110186971 A CN202110186971 A CN 202110186971A CN 112813848 A CN112813848 A CN 112813848A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 81
- 239000010959 steel Substances 0.000 title claims abstract description 81
- 238000010276 construction Methods 0.000 title claims abstract description 47
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 9
- 241000239290 Araneae Species 0.000 claims abstract description 5
- 238000004873 anchoring Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 3
- 230000007306 turnover Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention relates to a supporting structure for platform erection based on a steel pile foundation and a construction method, and belongs to the field of bridge construction. The supporting structure is a spider leg type supporting structure and comprises a supporting upright post, a cross-shaped supporting beam and supporting legs; the supporting upright posts are welded in the middle of the upper end face of the cross-shaped supporting beam, and two supporting legs are welded at each end of the cross shape of the lower end face of the cross-shaped supporting beam; and a reinforcing inclined strut is welded between the lower end face of each supporting leg and the lower end face of the cross-shaped supporting beam, and two reinforcing inclined struts at each end head have a certain included angle with an outward opening. The invention fully utilizes the bridge steel pile foundation or the steel casing, avoids additionally driving a temporary steel pipe pile and erecting an operation platform in water, has convenient assembly design, easy assembly, disassembly and turnover utilization, simple construction and low equipment requirement, reduces the investment of a large amount of temporary materials, equipment and construction manpower for bridge construction, saves the construction period and improves the working efficiency.
Description
Technical Field
The invention relates to a supporting structure, in particular to a supporting structure for platform erection based on a steel pile foundation and a construction method. Belongs to the field of bridge construction.
Background
Since the twenty-first century, with the rapid soaring of the economy of China, the rapid development of bridge construction is driven, more and more bridges across rivers and rivers continuously emerge above the great rivers of China, and particularly, in recent years, offshore and coastal areas, sea-crossing channels and island-connecting projects are endless, such as a Hongzhu Australian bridge, a Hangzhou Bay bridge, an east-sea Archimeris bridge, a Qingdao Bay bridge, a Zhoushan island-connecting project and the like, and the off-shore strategic curtain of bridges is opened. The national planning and vigorous development of coastlines and islands provide a wide stage for the development of offshore bridge construction, and it is expected that in the coming decades, great rivers and particularly the sea in China will stand up a lot of world-level bridge projects which have the attention of the world. The bridge engineering is built on water, one of the biggest difficulties is the construction of the foundation engineering of the pier in water, and the foundation is the pile foundation bearing platform foundation which is widely applied at present, so that the research on the foundation construction technology of the bridge on water is a core task in the bridge construction process, and the popularization and application values of advanced research results are very high.
At present, the most conventional construction method of the foundation of the pile foundation of the overwater bridge is to arrange a drilling platform of a temporary auxiliary steel pipe pile, and after the drilling construction of the pile foundation is finished, the drilling platform is properly transformed into a construction platform of a bearing platform sleeve. The conventional method has the disadvantages of huge temporary steel consumption, complex construction process, high safety risk, long construction period occupied by temporary engineering and high construction cost. For pile group foundations with large scale and overlarge bearing platforms, the conventional construction method also has certain advantages; but for the construction of small-scale pile groups and bearing platforms, the construction measure cost occupies a large proportion; if the pier positions in water are more, the construction cost is increased by times due to difficult turnover; if the bridge foundation structure assembling construction process is adopted, the requirements on construction ship machinery equipment are very high, and the cost is obviously increased. If the conventional method is adopted for bridge construction engineering with high requirements on marine environmental protection and marine organism protection, a new problem is faced.
Disclosure of Invention
The invention aims to: in order to overcome a series of problems caused by the adoption of a conventional construction method for an overwater bridge foundation and combine construction concepts such as standardization, assembly and the like, the invention provides a support structure for platform erection based on a steel pile foundation and a construction method.
The technical scheme of the invention is as follows: a supporting structure for erecting a platform based on a steel pile foundation is a spider leg type supporting structure and comprises supporting upright posts, cross-shaped supporting beams and supporting legs;
the supporting upright posts are welded in the middle of the upper end face of the cross-shaped supporting beam, and two supporting legs are welded at each end of the cross shape of the lower end face of the cross-shaped supporting beam; and a reinforcing inclined strut is welded between the lower end face of each supporting leg and the lower end face of the cross-shaped supporting beam, and two reinforcing inclined struts at each end head have a certain included angle with an outward opening.
Furthermore, an upright post stiffening plate is welded between the upper end face of the cross-shaped supporting beam and the side wall of the lower end of the supporting upright post.
Furthermore, the cross-shaped supporting beam is of a cross structure formed by cross and vertical connection of two steel structure beams, and two upright post stiffening plates are oppositely arranged on the center line of each steel structure beam by taking the supporting upright post as the center.
Further, the bottom parts of the two supporting legs at each end of the cross shape are horizontally provided with anchoring boot plates.
Furthermore, the anchoring boot plate is an arc-shaped plate, the two supporting legs are welded on the arc-shaped plate, and the arc length of the arc-shaped plate is larger than the width of the end head.
Furthermore, the anchoring boot plate is connected with a steel pile foundation or a steel pile casing through an anchoring bolt.
Furthermore, an inner flange plate is arranged in the top of the steel pile foundation or the steel pile casing; the anchoring boot plate is fixedly connected with the inner flange plate through an anchoring bolt.
Furthermore, a bearing beam of the pouring jacket lowering platform is arranged on the support upright post; the cross-shaped supporting beam is provided with a bearing beam of the sleeve box mounting platform.
Further, a construction method of the supporting structure for platform erection based on the steel pile foundation comprises the following steps:
1) constructing a steel pile foundation or a steel pile casing of a bridge:
an inner flange plate is arranged on the top of the steel pile foundation or the steel pile casing in advance;
2) support structure for the erection of platforms based on a steel pile foundation erected by means of an internal flange mounting platform:
fixing the anchoring boot plate of the supporting structure and the inner flange plate together through an anchoring bolt, so that the supporting structure for erecting the platform based on the steel pile foundation is fixed on the steel pile foundation or the steel pile casing;
3) installing a bearing beam of a sleeve box installation platform on a cross-shaped supporting beam of the supporting structure as an installation operation platform of a sleeve box bottom plate during the construction of a bridge bearing platform; the top of the support upright post of the support structure is provided with a pouring jacket lowering platform bearing beam for installing the pouring jacket lowering operation platform.
Further, the diameter of the inner flange plate is enough to pass through a drill bit of the drilling machine.
The invention has the advantages that: the bridge steel pile foundation or the steel casing is fully used, the extra temporary steel pipe piles are prevented from being additionally arranged in water and an operation platform is avoided, the assembling degree is convenient to assemble, disassemble and transfer, the construction is simple, the equipment requirement is low, the investment of a large amount of temporary materials, equipment and construction manpower in bridge construction is reduced, the construction period is shortened, the working efficiency is improved, the safety risk is reduced, and the whole economy is good.
Drawings
The following describes the method of the present invention with reference to the accompanying drawings.
FIG. 1 is an overall vertical layout view of the installation of the supporting structure for platform erection based on a steel pile foundation of the invention;
FIG. 2 is a view of the internal flange configuration;
FIG. 3 is a leg layout;
FIG. 4 is a top view of FIG. 3;
fig. 5 is a construction platform spandrel girder installation plane layout diagram.
In the figure: 1. a steel pile foundation or a steel casing; 2. an inner flange plate; 3. a flange plate stiffening plate; 4. supporting the upright post; 5. a cross-shaped support beam; 6. column stiffening plates; 7. a support leg; 8. reinforcing the inclined strut; 9. an anchor shoe plate; 10. an anchor bolt; 11. a jacket mounting platform spandrel girder; 12. the platform spandrel girder is transferred to the pouring jacket.
Detailed Description
Example 1
As shown in fig. 3 and 4, a support structure for platform erection based on a steel pile foundation is a spider leg type support structure, which comprises a support upright 4, a cross-shaped support beam 5 and legs 7;
the supporting upright posts 4 are welded in the middle of the upper end face of the cross-shaped supporting beam 5, and two supporting legs 7 are welded at each end of the cross shape of the lower end face of the cross-shaped supporting beam 5; a reinforcing inclined strut 8 is further welded between the lower end face of each supporting leg 7 and the lower end face of the cross-shaped supporting beam 5, two reinforcing inclined struts 8 at each end have a certain included angle, and the opening of the included angle is outward.
The whole supporting structure of the invention has 8 supporting legs, so the supporting structure is called a spider leg type supporting structure.
Example 2
As shown in fig. 3 and 4, on the basis of embodiment 1, an upright stiffening plate 6 is welded between the upper end surface of the cross-shaped support beam 5 and the side wall of the lower end of the support upright 4.
Furthermore, the cross-shaped support beam 5 is a cross-shaped structure formed by cross-connecting two steel structure beams, and two upright post stiffening plates 6 are oppositely arranged on the center line of each steel structure beam by taking the support upright post 4 as the center.
Further, the bottom of the two legs 7 at each end of the cross shape is horizontally provided with an anchoring boot plate 9.
Further, the anchoring boot plate 9 is an arc-shaped plate, the two supporting legs 7 are welded on the arc-shaped plate, and the arc-shaped length of the arc-shaped plate is larger than the width of the end head.
The invention provides a construction method of a supporting structure for platform erection based on a steel pile foundation, which comprises the following steps:
1) the steel pile foundation or the steel pile casing of the construction bridge 1:
as shown in fig. 1 and 2: an inner flange 2 is arranged at the top of the steel pile foundation or the steel pile casing 1 in advance; the inner flange plate 2 and the inner wall of the steel pile foundation or the steel casing 1 are fixed by welding, bolt holes are arranged along the radial direction, and adjacent bolt holes are reinforced by a flange plate stiffening plate 3 to ensure the integral rigidity of the inner flange plate 2; the inner diameter of the inner flange 2 is large enough to allow the drill bit to pass through.
The reason why the flange is arranged on the inner side of the steel pile foundation or the steel pile casing 1 is as follows: firstly, the protruding structure on the outer wall is avoided, the opening size of the construction sleeve box of the bridge bearing platform is reduced, the water sealing difficulty at the bottom plate of the sleeve box is reduced, and the integral lowering of the sleeve box is facilitated; and secondly, the construction requirement space that the aperture of the steel pile foundation or the steel casing 1 is larger than the maximum diameter of the drill bit of the drilling machine is utilized.
Further, the steel pile foundation of the bridge pile is a steel pipe structure which extends into a river bed or a sea bed.
2) The support structure for the erection of a platform based on a steel pile foundation is installed by means of an internal flange 2:
fixing the anchoring boot plate 9 of the supporting structure with the inner flange 2 through the anchoring bolt 10, so that the supporting structure is fixed on the steel pile foundation or the steel pile casing 1;
3) a bearing beam 11 of a sleeve mounting platform is arranged on a cross-shaped support beam 5 of the support structure and is used as a mounting operation platform of a sleeve bottom plate during the construction of a bridge bearing platform; a jacket lowering platform bearing beam 12 is arranged at the top of a supporting upright post 4 of a supporting structure for erecting a platform based on a steel pile foundation and used for installing a jacket lowering operation platform. As shown in fig. 5.
Furthermore, the length of the cross-shaped supporting beam 5 is not more than 5cm larger than the outer diameter of the steel pile foundation or the steel casing 1.
Furthermore, the two jacket installation platforms 11 are arranged on the cross-shaped support beam 5 in parallel. The set box lowering platform bearing beam 12 is one, is positioned above the set box mounting platform bearing beam 11 and is vertical to the platform bearing beam 11 in the horizontal direction.
The invention is different from the conventional temporary auxiliary steel pipe pile platform method, not only avoids the investment of manpower, financial resources and material resources for driving and removing the temporary steel pipe pile, but also is connected by a flange plate by means of a bridge steel pile foundation or a steel casing, the assembly degree is convenient for assembly, disassembly and turnover utilization, the construction is simple, the equipment requirement is low, the construction period is saved, the working efficiency is improved, the safety risk is reduced, and the integral economy is good.
The above examples are merely illustrative of the present invention and are not to be construed as limiting the scope of the invention, which is intended to include all designs and methods which are the same or similar to the present invention. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (10)
1. The utility model provides a bearing structure for platform is set up based on steel pile basis which characterized by: the supporting structure is a spider leg type supporting structure and comprises a supporting upright post (4), a cross-shaped supporting beam (5) and supporting legs (7);
the supporting upright posts (4) are welded in the middle of the upper end face of the cross-shaped supporting beam (5), and two supporting legs (7) are welded at each end of the cross shape of the lower end face of the cross-shaped supporting beam (5); a reinforcing inclined strut (8) is further welded between the lower end face of each supporting leg (7) and the lower end face of the cross-shaped supporting beam (5), two reinforcing inclined struts (8) at each end have a certain included angle, and the opening of the included angle is outward.
2. A support structure for platform erection based on a steel pile foundation as claimed in claim 1, wherein: and an upright post stiffening plate (6) is welded between the upper end surface of the cross-shaped supporting beam (5) and the side wall of the lower end of the supporting upright post (4).
3. A support structure for platform erection based on a steel pile foundation as claimed in claim 2, wherein: the cross-shaped supporting beam (5) is of a cross structure formed by cross and vertical connection of two steel structure beams, and two upright post stiffening plates (6) are oppositely arranged on the center line of each steel structure beam by taking the supporting upright post (4) as the center.
4. A support structure for platform erection based on a steel pile foundation as claimed in claim 1, wherein: the bottom parts of the two supporting legs (7) at each end of the cross shape are horizontally provided with anchoring boot plates (9).
5. A support structure for platform erection based on a steel pile foundation as claimed in claim 4, wherein: the anchoring boot plate (9) is an arc-shaped plate, the two supporting legs (7) are welded on the arc-shaped plate, and the arc-shaped length of the arc-shaped plate is larger than the width of the end head.
6. A support structure for platform erection based on a steel pile foundation as claimed in claim 4, wherein: the anchoring boot plate (9) is connected with a steel pile foundation or a steel pile casing (1) through an anchoring bolt (10).
7. A support structure for platform erection based on a steel pile foundation as claimed in claim 4, wherein: an inner flange plate (2) is arranged in the top of the steel pile foundation or the steel pile casing (1); the anchoring boot plate (9) is fixedly connected with the inner flange plate (2) through an anchoring bolt (10).
8. A support structure for platform erection based on a steel pile foundation as claimed in claim 1, wherein: a bearing beam (12) of a pouring jacket lowering platform is arranged on the supporting upright post (4); the cross-shaped supporting beam (5) is provided with a bearing beam (11) of the sleeve box mounting platform.
9. A construction method of a supporting structure for platform erection based on a steel pile foundation is characterized by comprising the following steps: the method comprises the following steps:
1) a steel pile foundation or a steel pile casing (1) for constructing a bridge:
an inner flange (2) is arranged at the top of the steel pile foundation or the steel pile casing (1) in advance;
2) a support structure for the erection of a platform based on a steel pile foundation erected by means of an internal flange (2) is installed:
fixing an anchoring boot plate (9) of the supporting structure with an inner flange plate (2) through an anchoring bolt (10) so that the supporting structure is fixed on a steel pile foundation or a steel pile casing (1);
3) a bearing beam (11) of a sleeve mounting platform is arranged on a cross-shaped supporting beam (5) of the supporting structure and is used as a mounting operation platform of a sleeve bottom plate during the construction of a bridge bearing platform; the top of a support upright post (4) of the support structure is provided with a pouring jacket lowering platform bearing beam (12) for installing a pouring jacket lowering operation platform.
10. The method of constructing a support structure for a platform set-up based on a steel pile foundation as claimed in claim 1, wherein: the diameter of the inner flange plate (2) is enough to allow a drill bit of the drilling machine to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110186971.XA CN112813848A (en) | 2021-02-18 | 2021-02-18 | Supporting structure for platform erection based on steel pile foundation and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110186971.XA CN112813848A (en) | 2021-02-18 | 2021-02-18 | Supporting structure for platform erection based on steel pile foundation and construction method |
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| CN112813848A true CN112813848A (en) | 2021-05-18 |
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| CN209025103U (en) * | 2018-11-01 | 2019-06-25 | 重庆市勘测院 | For building the pile-column foundation structure of escape truck or emergency bridge |
| JP2020002778A (en) * | 2019-10-10 | 2020-01-09 | 鹿島建設株式会社 | Bridge pier construction method |
| CN215669019U (en) * | 2021-02-18 | 2022-01-28 | 中交第二公路工程局有限公司 | Supporting structure for platform erection based on steel pile foundation |
-
2021
- 2021-02-18 CN CN202110186971.XA patent/CN112813848A/en active Pending
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| KR20020066608A (en) * | 2001-02-12 | 2002-08-21 | 정숙영 | Anchoring joint for steel pile head and concrete footing and thereof construction structure |
| KR200399343Y1 (en) * | 2005-07-20 | 2005-10-24 | 현대엔지니어링 주식회사 | The Bracket Device for Using the PC House Installation at the Footing of Bridges |
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