CN112982165A - Construction method for assembling steel box girder of river channel - Google Patents
Construction method for assembling steel box girder of river channel Download PDFInfo
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- CN112982165A CN112982165A CN201911307808.3A CN201911307808A CN112982165A CN 112982165 A CN112982165 A CN 112982165A CN 201911307808 A CN201911307808 A CN 201911307808A CN 112982165 A CN112982165 A CN 112982165A
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- pile
- steel pipe
- concrete
- steel
- box girder
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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
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
Abstract
The invention discloses a construction method for assembling a steel box girder of a river channel, which comprises a concrete precast pile and a steel pipe pile, wherein the concrete precast pile is immersed in water to serve as a mounting point of the steel pipe pile, the steel pipe pile is arranged on the concrete pile and is connected with and bears the weight of the steel box girder, and the construction method comprises the following steps: step S1, pile sinking is carried out by setting pile positions, and the concrete precast pile is installed to a preset position; step S2, arranging a steel pipe pile at the upper end of the concrete pile, wherein one end of the steel pipe pile is detachably connected with the concrete precast pile, and the other end of the steel pipe pile is connected with a steel box girder; and step S3, structurally connecting the plurality of steel pipe piles to form a support frame for supporting and fixing the steel box girder. The invention solves the technical problems of long construction period, high construction cost and difficult secondary utilization of the construction support due to the fact that the bearing capacity of the conventional steel pipe support in a river channel is limited and the dismantling process is complicated.
Description
Technical Field
The invention relates to the field of bridge wading engineering in the highway industry, in particular to a construction method for assembling a steel box girder in a river channel.
Background
With the development of the domestic highway industry, the number of the top-span river channel bridge projects is increased day by day, the small-span steel arch bridge is suitable for construction by adopting a support method because the main-span bridge is a steel box girder, the conventional support adopts a steel pipe support, and the clearance between the bottom surface of the steel box girder and the water surface of the river channel is smaller, so that the technical method for dismantling the steel pipe support penetrating into the river bed after the steel box girder is installed is more complicated; when the water clearance of the river is small, the steel pipe pile material deep into the soil body is difficult to pull out due to the influence of the clearance, so that the construction support cannot be reused.
And the steel pipe support foundation adopts the concrete to enlarge, can't be under construction in the river course, and is mostly silt basis in the river course, and the bearing capacity can not meet the demands.
Disclosure of Invention
The invention mainly aims to provide a construction method for assembling a steel box girder of a river channel, and aims to solve the technical problems of long construction period, high construction cost and difficulty in secondary utilization of a construction support caused by the fact that the conventional steel pipe support has limited bearing capacity in the river channel and is complicated in dismantling process.
In order to achieve the above object, according to one aspect of the present invention, a construction method for assembling a steel box girder of a river is provided.
The construction method for assembling the steel box girder of the river channel according to the application of the invention comprises the following steps:
including concrete precast pile and steel-pipe pile, the concrete precast pile immerses in the water as the mounting point of steel-pipe pile, the steel-pipe pile sets up on the concrete pile, connects and bears the weight of steel box girder, and the step includes:
step S1, pile sinking is carried out by setting pile positions, and the concrete precast pile is installed to a preset position;
step S2, arranging a steel pipe pile at the upper end of the concrete pile, wherein one end of the steel pipe pile is detachably connected with the concrete precast pile, and the other end of the steel pipe pile is connected with a steel box girder;
and step S3, structurally connecting the plurality of steel pipe piles to form a support frame for supporting and fixing the steel box girder.
Further, the preset concrete pile is of a solid structure.
Furthermore, the connection point of the concrete precast pile and the steel pipe pile is positioned above the horizontal plane of the river.
Further, the steel pipe piles are connected through a truss structure to form a support frame.
Furthermore, when the steel pipe pile is arranged at the upper end part of the concrete pile, a backing plate is arranged, and the steel plate is respectively connected with the concrete pile and the steel pipe pile.
Further, the setting of the backing plates comprises measuring the height difference of the precast concrete piles, and the setting height of the backing plates is determined according to the measurement of the height difference of the precast concrete piles.
Further, the backing plate is a steel plate.
In the embodiment of the invention, the support of the steel box girder is improved, and the purpose of improving the stability of the support structure and facilitating the recycling and reutilization of the steel pipe pile is achieved by combining the precast concrete pile and the steel pipe pile, so that the technical effects of shortening the construction period and reducing the construction cost are realized, and the technical problems of long construction period, high construction cost and difficulty in reutilization of the construction support caused by the fact that the bearing capacity of the conventional steel pipe support in a river channel is limited and the dismantling process is complicated are solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the invention and to make further features, objects, and advantages of the invention apparent. The drawings and their description illustrate exemplary embodiments of the invention and do not limit it inappropriately. In the drawings:
fig. 1 is a schematic structural diagram of a combined structure of a concrete precast pile and a steel pipe pile in a construction method for assembling a steel box girder of a river according to an embodiment of the present invention.
Detailed Description
In order to make the person skilled in the art better understand the application scheme of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application, shall fall within the scope of protection of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present application are described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the drawings.
In the existing arrangement of the steel box girder in the river channel, the support method is preferably adopted to fix and support the steel box girder structure under the condition of short distance, the conventional support structure of 'steel pipe support and concrete foundation' has the following problems,
1. the steel pipe support concrete foundation cannot be constructed in a river channel, and the bearing capacity of a sludge foundation in the river channel mostly does not meet the requirement;
2. the construction of the concrete foundation with the steel pipe support in the river channel needs a supporting and blocking structure around the support, the river water is isolated, the soft foundation of the riverbed in the river channel is excavated and filled, and the supporting and blocking structure and the soft foundation of the riverbed are large in engineering quantity and cannot be implemented.
3. The steel pipe pile is used as a foundation, the clearance between the upper bridge and the water surface of the riverway is smaller, the steel pipe pile inserted into the soil body after the steel box girders are assembled cannot be pulled out due to the limitation of the clearance, and the material of the steel pipe pile penetrating into the soil body is wasted;
in order to avoid the waste of steel pipe piles and enhance the overall stability of the supporting frame, the construction method for assembling the steel box girder of the river channel is provided with the combination of the concrete precast pile and the steel pipe pile.
The construction method of the concrete precast pile and the steel pipe pile combined type has the advantages that:
1. the concrete precast pile is used as a steel plate support foundation, the concrete precast pile is a solid pile, the surface of the concrete is in contact with a soil body to form frictional resistance, meanwhile, due to the solid pile, the soil has a certain bearing capacity on the pile end, the deeper the soil body is inserted and beaten, the larger the bearing capacity is, the length of the pile penetrating into the soil body can be reduced, and the use of materials is reduced;
2. the concrete precast pile bears larger load, is firm and durable, has high construction speed and mature technology.
3. The smaller the clearance between the upper bridge and the water surface of the riverway is, the more complete the steel pipe pile which is assembled by the steel box girder and can be detachably connected with the concrete precast pile can be used for the second time; the prestressed concrete pile deep into the soil body can be removed without processing under the condition of not influencing the surrounding environment, and manpower, material resources and time are not consumed for removing the pile.
The improvement of the construction method in practical application is not obvious, so that the application of the scheme is not related to in the construction aspect before, because the preparation and transportation of the concrete precast pile are time-consuming and labor-consuming compared with the field precast concrete device in terms of construction cost, along with the development of transportation industry and the improvement of the productivity of the concrete precast pile, the construction process adopting the structure of the concrete precast pile and the steel pipe pile is simplified compared with the traditional construction process of the steel pipe support and the concrete foundation, the whole cost is low, and the construction period is short.
The invention relates to a construction method for assembling a steel box girder of a river channel, which comprises a concrete precast pile and a steel pipe pile, wherein the concrete precast pile is immersed in water to serve as a mounting point of the steel pipe pile, the steel pipe pile is arranged on the concrete pile and is connected with and bears the weight of the steel box girder, and the construction method comprises the following steps:
step S1, pile sinking is carried out by setting pile positions, and the concrete precast pile is installed to a preset position; the preset concrete pile is of a solid structure.
Step S2, arranging a steel pipe pile at the upper end of the concrete pile, wherein one end of the steel pipe pile is detachably connected with the concrete precast pile, and the other end of the steel pipe pile is connected with a steel box girder;
in a preferred embodiment of the present invention, a connection point of the precast concrete pile and the steel pipe pile is located above a horizontal surface of a river.
And step S3, structurally connecting the plurality of steel pipe piles to form a support frame for supporting and fixing the steel box girder.
The concrete precast pile and steel pipe pile combined construction structure disclosed by the application of the invention is specifically shown in figure 1.
In a preferred embodiment of the present invention, the steel pipe piles are connected by a truss structure to form a support frame. In a further preferred embodiment of the present invention, the setting of the steel pipe pile at the upper end of the concrete pile includes setting a backing plate, and the steel plates are connected to the concrete pile and the steel pipe pile, respectively. And measuring the height difference of the precast concrete piles between the setting of the base plates, and determining the setting height of the base plates according to the measurement of the height difference of the precast concrete piles. In a preferred embodiment of the present invention, the backing plate is a steel plate.
The construction method of the combined foundation of the concrete precast pile and the steel pipe pile is a new process and a new method. The construction method avoids the labor and mechanical cost consumed by later steel pipe pile dismantling, and greatly shortens the construction time; simultaneously, the concrete precast pile and steel pipe pile combined foundation has the advantages of rapidness, high installation speed, high rigidity, simple construction and convenient effect:
firstly, the project concrete precast pile is easy to purchase, the construction process is mature, the project concrete precast pile is widely used in urban buildings, the application range is wide, and the project concrete precast pile is beneficial to site-specific construction;
secondly, the concrete precast pile and steel pipe pile combined foundation has strong bearing capacity and rigidity, is beneficial to shortening the length of the foundation, is beneficial to saving materials, and ensures the safety and stability requirements of the steel box girder assembled support.
Thirdly, the concrete precast pile and the steel pipe pile combined foundation are fast and convenient to dismantle, only the steel pipe pile is needed to be dismantled for dismantling, the underwater operation time is shortened, the potential safety hazard is reduced, the construction progress is favorably improved, the construction cost is saved, and the method has good technical popularization and application values.
In the embodiment of the invention, the support of the steel box girder is improved, and the purpose of improving the stability of the support structure and facilitating the recycling and reutilization of the steel pipe pile is achieved by combining the precast concrete pile and the steel pipe pile, so that the technical effects of shortening the construction period and reducing the construction cost are realized, and the technical problems of long construction period, high construction cost and difficulty in reutilization of the construction support caused by the fact that the bearing capacity of the conventional steel pipe support in a river channel is limited and the dismantling process is complicated are solved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (7)
1. A construction method for assembling steel box girders in a riverway is characterized by comprising concrete precast piles and steel pipe piles, wherein the concrete precast piles are immersed in water to serve as mounting points of the steel pipe piles, the steel pipe piles are arranged on the concrete piles and are connected with and bear the weight of the steel box girders, and the construction method comprises the following steps:
step S1, pile sinking is carried out by setting pile positions, and the concrete precast pile is installed to a preset position;
step S2, arranging a steel pipe pile at the upper end of the concrete pile, wherein one end of the steel pipe pile is detachably connected with the concrete precast pile, and the other end of the steel pipe pile is connected with a steel box girder;
and step S3, structurally connecting the plurality of steel pipe piles to form a support frame for supporting and fixing the steel box girder.
2. The construction method for assembling the steel box girder of the river channel according to claim 1, wherein the preset concrete pile is of a solid structure.
3. The construction method for assembling the steel box girder of the river according to claim 1, wherein a connection point of the concrete precast pile and the steel pipe pile is located above a horizontal plane of the river.
4. The construction method for assembling the steel box girder of the river channel according to claim 1, wherein the steel pipe piles are connected by a truss structure to form a support frame.
5. The construction method for assembling the steel box girder of the river according to any one of claims 1 to 4, wherein the steel pipe piles are arranged at the upper ends of the concrete piles, the steel plate piles are connected with the steel pipe piles through the steel plate setting.
6. The construction method for assembling the steel box girder of the river channel according to claim 5, wherein the setting of the base plates comprises measuring the height difference of the precast concrete piles, and the setting height of the base plates is determined according to the measurement of the height difference of the precast concrete piles.
7. The construction method for assembling the steel box girder of the river channel according to claim 5, wherein the base plate is a steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911307808.3A CN112982165A (en) | 2019-12-17 | 2019-12-17 | Construction method for assembling steel box girder of river channel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911307808.3A CN112982165A (en) | 2019-12-17 | 2019-12-17 | Construction method for assembling steel box girder of river channel |
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| CN112982165A true CN112982165A (en) | 2021-06-18 |
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| KR20090083106A (en) * | 2008-01-29 | 2009-08-03 | 어기택 | Method of the bridge construction which connects the steel pipe pile of abutment substituion and the precast girder with a fixation |
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| CN104695411A (en) * | 2015-03-17 | 2015-06-10 | 苏交科集团股份有限公司 | Prefabricated combined structure steel pipe pile wind power generation platform |
| CN107119675A (en) * | 2017-04-24 | 2017-09-01 | 张继红 | A kind of steel tube concrete pile combined support column and its construction method |
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2019
- 2019-12-17 CN CN201911307808.3A patent/CN112982165A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090083106A (en) * | 2008-01-29 | 2009-08-03 | 어기택 | Method of the bridge construction which connects the steel pipe pile of abutment substituion and the precast girder with a fixation |
| CN101935986A (en) * | 2010-10-09 | 2011-01-05 | 中铁八局集团第一工程有限公司 | Overwater large-span steel tube pile cast-in-situ trestle and building method thereof |
| CN104695411A (en) * | 2015-03-17 | 2015-06-10 | 苏交科集团股份有限公司 | Prefabricated combined structure steel pipe pile wind power generation platform |
| CN107119675A (en) * | 2017-04-24 | 2017-09-01 | 张继红 | A kind of steel tube concrete pile combined support column and its construction method |
| CN108824220A (en) * | 2018-08-08 | 2018-11-16 | 中国建筑第七工程局有限公司 | A kind of cast-in-place support and construction method of the rigid structure of cantilever T-type |
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| 范伟: "《市政公用工程管理与实务》" * |
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Application publication date: 20210618 |