CN108487291B - Installation method of contact net stand column foundation on railway steel-concrete composite beam - Google Patents
Installation method of contact net stand column foundation on railway steel-concrete composite beam Download PDFInfo
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- CN108487291B CN108487291B CN201810246462.XA CN201810246462A CN108487291B CN 108487291 B CN108487291 B CN 108487291B CN 201810246462 A CN201810246462 A CN 201810246462A CN 108487291 B CN108487291 B CN 108487291B
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- stand column
- column foundation
- contact net
- main beam
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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
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
Abstract
The invention discloses a method for installing a contact net stand column foundation on a railway steel-concrete composite beam, which comprises the steps of assembling, hoisting and installing support parts, then embedding reinforcing steel bars at the tops of all the support parts and the top of a main beam, and pouring to finish the installation of the stand column foundation. By adopting the method, the construction of the contact net stand column foundation can be facilitated, the pouring forming quality of a concrete layer is effectively improved, temporary construction measures such as independently setting a template and the like are reduced, the installation efficiency and the quality of the stand column foundation are effectively improved, the construction period is shortened, the subsequent hoisting and installation of the stand column are facilitated, the perpendicularity and the stability of the stand column are favorably ensured, the down pole and the settlement are avoided, the reinforcing steel bars on the bridge floor flange are not required to be encrypted, the design strength and the construction difficulty are effectively reduced, the material is favorably saved, the construction cost of bridge engineering is prevented from being greatly increased, the planning and arrangement of the installation position of the stand column are facilitated, the operation quality of the contact net is.
Description
Technical Field
The invention relates to the technical field of railway steel-concrete composite beams, in particular to a method for installing a contact net stand column foundation on a railway steel-concrete composite beam.
Background
The steel-concrete combined beam is a novel structure formed by combining two materials with different properties, namely steel and concrete. The steel-concrete composite beam is a reasonable combination of two materials of steel and concrete, fully exerts the advantages of high tensile strength, good plasticity and good compression resistance of the steel and the concrete, and can make up for the defects of the steel and the concrete, so that the steel-concrete composite beam is increasingly one of the main directions of bridge development in modern bridge structures. The electrified gasification railway becomes the mainstream type of the modern railway in recent years, is widely applied to the construction of high-speed railways and urban rail transit, and a plurality of non-electrified railways also realize electrified upgrading and reconstruction in succession, wherein a contact network is one of two power supply network modes commonly used by the electrified railway, is used as a special form power transmission line which is erected along the railway line and supplies power to an electric locomotive, and mainly comprises a contact suspension, a supporting device, a positioning device, a support column and a foundation.
The existing steel-concrete combined bridge is provided with a contact net foundation, wherein one mode is designed on a bridge pier, the construction method comprises the steps of binding bridge pier top cap steel bars and embedded steel bars of the contact net foundation on a cantilever plate of the bridge pier, pouring the cantilever plate of the contact net foundation and the bridge pier top cap together, reserving a stand column embedded bolt sleeve, and installing the embedded bolt and the sleeve for connection, so that the contact net stand column and the foundation are firmly connected, the foundation is simple in structure, but the position is limited near the bridge pier, and the reasonable distribution of the stand column is inconvenient due to the fact that the stress of the bridge structure is complex and changeable; the other type is designed on a bridge deck flange plate of the steel-concrete composite beam, the construction method is that embedded steel bars of a contact net foundation are arranged on the flange plate in an encrypted mode and connected with main beam steel bars, then concrete on the bridge deck flange plate of the contact net foundation and concrete on the main beam are poured together, meanwhile, an upright post embedded bolt sleeve is reserved, an embedded bolt is installed to be connected with the sleeve, the contact net upright post is firmly connected with the foundation, the foundation is not limited in arrangement position, but the upright post is heavy in weight, the steel bars on a bridge deck plate need to be reinforced, the bridge deck plate is thin, the steel bars are over-dense, the construction difficulty is large, the construction requirement is high, the cost is high, and the construction efficiency is low.
Disclosure of Invention
The invention aims to overcome the defects of multiple limiting conditions, high construction difficulty, high cost, low construction efficiency, poor quality and the like when the contact net foundation is installed on a steel-concrete composite bridge in the prior art, and provides an installation method of the contact net column foundation on the railway steel-concrete composite bridge.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for installing a contact net stand column foundation on a railway steel-concrete composite beam comprises the following steps:
a. manufacturing a support part, connecting a plurality of sleeves and a plurality of shear nails to the top of the support part, wherein all the sleeves are arranged along the periphery of the installation position of the upright post;
b. hoisting and connecting all the supporting parts to a main beam;
c. and arranging embedded steel bars at the tops of the supporting parts and the top of the main beam, and pouring concrete at the tops of the supporting parts and the top of the main beam to form a reinforced concrete layer so as to finish the installation of the stand column foundation.
The concrete installation method comprises the steps of firstly manufacturing a supporting part, wherein the supporting part is used for supporting a stand column, connecting a fixing sleeve and a shear nail on the supporting part, the sleeve is used for connecting a contact net stand column and is arranged around an installation position, then hoisting and connecting each position needing to be provided with the stand column on a bridge with the supporting part, binding embedded steel bars at the top of the supporting part and the top of a main beam and pouring concrete after connection is finished, the embedded steel bars on the supporting part do not need to be additionally encrypted, the supporting part can be used as a bottom die in concrete pouring, pouring is convenient, formwork erecting cost is reduced, formwork turnover loss is saved, pouring forming quality is effectively improved, and after a stand column foundation is formed, the stand column is installed on the stand column foundation through connection of bolts and the sleeves.
By adopting the method, the construction of the contact net stand column foundation can be facilitated, the pouring forming quality of a concrete layer is effectively improved, temporary construction measures such as independently setting a template and the like are reduced, the installation efficiency and the quality of the stand column foundation are effectively improved, the construction period is shortened, the subsequent hoisting and installation of the stand column are facilitated, the perpendicularity and the stability of the stand column are favorably ensured, the down pole and the settlement are avoided, the reinforcing steel bars on the bridge floor flange are not required to be encrypted, the design strength and the construction difficulty are effectively reduced, the material is favorably saved, the construction cost of bridge engineering is prevented from being greatly increased, the planning and arrangement of the installation position of the stand column are facilitated, the operation quality of the contact net is.
Preferably, in step a, the supporting member is further assembled, the supporting member includes a top plate, webs and a bottom plate, at least two webs are disposed below each of the pillars, the bottom of each web is connected to one of the bottom plates, all the webs are vertically connected to the top plate, and each of the bottom plates is perpendicular to the corresponding web.
Further preferably, all the top plates, the webs and the bottom plates are steel structural members, all the top plates are connected with the main beam in a welding mode, and all the webs and the bottom plates are spliced with the main beam through high-strength bolts.
Further preferably, in the step a, a plurality of stiffeners are connected to the bottom of the top plate along the transverse direction.
Adopt above-mentioned mode of setting up, can strengthen the intensity on stand basis, effective stable support stand further avoids the stand crooked or sink, guarantees simultaneously with the stable connection of girder, effectively transmits the atress of contact net to girder and pier, guarantees the transmission that the load is reasonable, even.
Preferably, in the step a, all the sleeves and the shear nails are welded to the top plate.
Further preferably, said step a is performed at a factory.
By adopting the mode, the welding quality of the sleeve and the shear nail and the forming quality of the supporting part are improved, the construction quality and the safety of the stand column foundation are improved, the pollution is reduced, and the efficiency is improved.
Preferably, before the step b, stiffening plates are connected to the main beam at corresponding positions where each of the support members is connected.
Preferably, in the step c, concrete on the top of the support member and concrete on the top of the girder are integrally cast.
By adopting the arrangement mode, the stress is favorably and reasonably transmitted, and the basic strength and the stability are improved.
Preferably, the main beam is a steel plate beam, a steel box beam or a steel truss beam.
In summary, compared with the prior art, the invention has the beneficial effects that:
1. by adopting the installation method of the contact net stand column foundation on the railway steel-concrete composite beam, the construction of the contact net stand column foundation can be facilitated, the pouring forming quality of a concrete layer is effectively improved, temporary construction measures such as independently arranging a template and the like are reduced, the installation efficiency and quality of the stand column foundation are effectively improved, the construction period is shortened, the subsequent hoisting and installation of the stand column are facilitated, the perpendicularity and stability of the stand column are favorably ensured, the down-down and settlement are avoided, the reinforcing steel bars on the flange of a bridge floor are not required to be encrypted, the design strength and the construction difficulty are effectively reduced, the material is favorably saved, the construction cost of bridge engineering is avoided being greatly increased, the installation position of the stand column is conveniently planned and arranged, the operation quality of the contact net is improved, the economical efficiency.
2. By adopting the installation method of the contact net stand column foundation on the railway steel-concrete composite beam, the strength of the stand column foundation can be enhanced, the stand column can be effectively and stably supported, the stand column is further prevented from being inclined or sinking, the stable connection with the main beam is ensured, the stress of the contact net can be effectively transmitted to the main beam and the bridge pier, and the reasonable and uniform load transmission is ensured.
3. The installation method of the contact net stand column foundation on the railway steel-concrete composite beam is beneficial to effectively improving the welding quality of the sleeve and the shear nail and the forming quality of the supporting part, improving the construction quality and the safety of the stand column foundation, reducing pollution and improving efficiency.
4. The installation method of the contact net stand column foundation on the railway steel-concrete composite beam is beneficial to reasonably transmitting stress and improving the strength and stability of the foundation.
Description of the drawings:
FIG. 1 is a flow chart of a method of installing a column foundation according to the present invention;
FIG. 2 is a schematic diagram of a first step of the method for installing a column foundation according to the present invention;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a schematic diagram of step two of the method for installing a column foundation according to the present invention;
FIG. 5 is a schematic view of step three of the method of installing a column foundation according to the present invention;
fig. 6 is a top view of fig. 5.
The labels in the figure are: 1-upright posts, 2-main beams, 3-concrete layers, 41-top plates, 42-web plates, 43-bottom plates, 44-stiffening ribs, 5-shear nails and 6-stiffening plates.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1, the installation method of the contact net column foundation on the railway steel-concrete composite beam, provided by the invention, comprises the following steps:
firstly, manufacturing a support component, connecting a plurality of sleeves and a plurality of shear nails 5 to the top of the support component, wherein all the sleeves are arranged along the periphery of the installation position of an upright post 1;
secondly, hoisting and connecting all the supporting parts to the main beam 2;
and thirdly, arranging embedded steel bars at the tops of all the supporting parts and the top of the main beam 2, and pouring concrete at the tops of the supporting parts and the top of the main beam 2 to form a reinforced concrete layer 3, so that the installation of the column foundation is completed.
Assembling the supporting component, wherein the supporting component comprises a top plate 41, a web plate 42 and a bottom plate 43 which are made of steel structures, two web plates 42 are arranged below the installation position of each upright post 1, the bottom of each web plate 42 is connected with one bottom plate 43 in a welding mode, all the web plates 42 are vertically connected with the top plate 41 in a welding mode, each bottom plate 43 is perpendicular to the corresponding web plate 42, then a plurality of sleeves and a plurality of shear nails 5 are connected to the supporting component in a welding mode, a plurality of stiffening ribs 44 are connected to the bottom of the top plate 41 along the transverse direction, all the sleeves are arranged around the installation position of the upright post 1, as shown in figures 2-3, the manufacturing of all the supporting components and the welding of the sleeves and the shear nails 5 are completed in a factory and then are transported to a project site, and stiffening plates 6 are connected to the corresponding positions where the supporting components are connected to the main beam 2, then all the supporting parts are hoisted to all the installation positions to be spliced with the main beam 2, all the top plates 41 are connected with the main beam 2 in a welding mode, all the web plates 42 and the bottom plates 43 are spliced with the main beam 2 through high-strength bolts, as shown in fig. 4, then embedded steel bars are bound on the tops of all the supporting parts and the top of the main beam 2, concrete is poured on the tops of the supporting parts and the top of the main beam 2, the concrete on the tops of the supporting parts and the concrete on the top of the main beam 2 are integrally poured, a reinforced concrete layer 3 is formed, and the installation of the column foundation is completed, as shown in fig. 5-6.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A method for installing a contact net stand column foundation on a railway steel-concrete composite beam is characterized by comprising the following steps:
a. manufacturing a supporting part, connecting a plurality of sleeves and a plurality of shear nails (5) to the top of the supporting part, wherein all the sleeves are arranged along the periphery of the installation position of a vertical column (1), the supporting part comprises a top plate (41), web plates (42) and a bottom plate (43), at least two web plates (42) are arranged below each vertical column (1), the bottom of each web plate (42) is connected with one bottom plate (43), all the web plates (42) are vertically connected with the top plate (41), and each bottom plate (43) is perpendicular to the corresponding web plate (42);
b. hoisting and connecting all the supporting parts to a main beam (2);
c. and arranging embedded steel bars at the tops of the supporting parts and the top of the main beam (2), and pouring concrete at the tops of the supporting parts and the top of the main beam (2) to form a reinforced concrete layer (3) so as to finish the installation of the column foundation.
2. The installation method of the contact net column foundation as claimed in claim 1, wherein all the top plates (41), the webs (42) and the bottom plates (43) are steel structural members, all the top plates (41) are welded with the main beam (2), and all the webs (42) and the bottom plates (43) are spliced with the main beam (2) through high-strength bolts.
3. The method for installing a catenary column foundation as claimed in claim 1, wherein in step a, a plurality of stiffening ribs (44) are connected to the bottom of the top plate (41) along the transverse direction.
4. The method for installing a catenary column foundation according to any one of claims 1 to 3, wherein in the step a, all the sleeves and the shear pins (5) are welded to the top plate (41).
5. The method for installing the catenary column foundation of claim 4, wherein step a is performed in a factory.
6. A method for installing a contact net column foundation according to any one of claims 1-3, characterized in that before step b, stiffening plates (6) are attached to the main beam (2) at the corresponding locations where each of the support members are attached.
7. A method for installing a catenary column foundation according to any one of claims 1-3, wherein in step c, the concrete on the top of the supporting member and the concrete on the top of the main beam (2) are cast integrally.
8. The method for installing the contact net column foundation according to any one of claims 1 to 3, wherein the main beam (2) is a steel plate beam or a steel box beam or a steel truss beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810246462.XA CN108487291B (en) | 2018-03-23 | 2018-03-23 | Installation method of contact net stand column foundation on railway steel-concrete composite beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810246462.XA CN108487291B (en) | 2018-03-23 | 2018-03-23 | Installation method of contact net stand column foundation on railway steel-concrete composite beam |
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| CN108487291A CN108487291A (en) | 2018-09-04 |
| CN108487291B true CN108487291B (en) | 2020-07-28 |
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| CN112343405A (en) * | 2020-10-13 | 2021-02-09 | 中铁十九局集团第二工程有限公司 | Construction method for high-speed railway bridge contact net foundation |
| CN113502755A (en) * | 2021-08-13 | 2021-10-15 | 成都建工路桥建设有限公司 | Construction method of steel-concrete composite beam flange plate |
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| JP2007120051A (en) * | 2005-10-26 | 2007-05-17 | Dps Bridge Works Co Ltd | Composite beam structure made of steel and concrete using composite floor slab and construction method for bridge girder having this structure |
| CN105735101B (en) * | 2016-05-11 | 2017-06-16 | 石家庄铁道大学 | A kind of high-speed railway repairing beam and its emergency repair method that can be exchanged into permanent bridge structure |
| CN107354857A (en) * | 2017-08-30 | 2017-11-17 | 中铁工程设计咨询集团有限公司 | A kind of high-speed railway repairing combined box beam and its assemble method |
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