CN110593082A - Structure for pre-embedding installation of tied arch bridge steel structure arch foot - Google Patents
Structure for pre-embedding installation of tied arch bridge steel structure arch foot Download PDFInfo
- Publication number
- CN110593082A CN110593082A CN201910909674.6A CN201910909674A CN110593082A CN 110593082 A CN110593082 A CN 110593082A CN 201910909674 A CN201910909674 A CN 201910909674A CN 110593082 A CN110593082 A CN 110593082A
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- arch
- bearing platform
- concrete
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- embedded
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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
- E01D19/00—Structural or constructional details of 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
- E01D4/00—Arch-type bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a structure for pre-embedding and installing steel structure arch springing of a tied arch bridge, which comprises a concrete bearing platform, a plurality of pre-embedded steel plates arranged on the concrete bearing platform and a limiting structure arranged on the pre-embedded steel plates. The invention has the beneficial effects that: this scheme can utilize limit structure to play location, spacing effect to the installation of hunch foot, when the installation hunch foot, can improve its location, installation accuracy, avoids debugging repeatedly, is favorable to improving the efficiency of construction, uses concrete cushion cap to support the hunch foot, can adjust the holistic installation of height in order to adapt to the hunch foot of concrete cushion cap according to the actual conditions in construction field, guarantees that the position of hunch foot satisfies the construction requirement.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a structure for pre-embedding and installing a tied arch bridge steel structure arch springing.
Background
At present, the steel arch foot of steel structure bridge is partially installed pre-buried, generally adopts shaped steel material as support post, because single steel arch foot component weight is great, and weight can reach dozens of tons, and shaped steel support post exists the weight that is difficult to bear the steel member and can take place shaped steel pressurized bending phenomenon, leads to the unable accurate erection and location of steel arch foot component, can produce adverse effect to the structure atress system and the service function of bridge. Although the load-bearing capacity and rigidity of the steel section support column can be improved by increasing the size of the steel section support column, construction cost, manufacturing cost and transportation cost are additionally increased.
When the steel arch springing component is installed, the vertical support to the steel component is considered, and the horizontal displacement of the steel arch springing component is required to be controlled so as to meet the requirements of design drawings and quality acceptance specifications. Because the requirement on the installation precision of the steel arch springing component is very high, if a large deviation is generated during installation, the stress of a bridge structure is influenced, and the operation safety of the bridge is influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a structure for the pre-embedding installation of the tied arch bridge steel structure arch springing, which is used for improving the pre-embedding installation precision of the arch springing and reducing the construction cost.
The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a structure that is used for pre-buried installation of tied arch bridge steel construction hunch foot, includes concrete cushion cap, the pre-buried steel sheet of a plurality of setting on the concrete cushion cap and the limit structure of setting on pre-buried steel sheet.
Further, in order to better realize the invention, the concrete bearing platform is poured twice, the bearing platform foundation is formed by the first pouring, the concrete support columns are poured on the bearing platform foundation, and the embedded steel plates are arranged at the tops of the concrete support columns.
Further, in order to better realize the invention, the concrete bearing platform pours the space between the concrete support columns for the second time.
Furthermore, in order to better realize the invention, the lower surface of the embedded steel plate is provided with a plurality of embedded ribs embedded into the concrete bearing platform.
Furthermore, in order to better realize the invention, the embedded steel plates are distributed around the arch springing according to the installation position of the arch springing, and the limiting structure is arranged in the direction in which the arch springing has the moving trend.
Furthermore, in order to better realize the invention, the limiting structure adopts a steel plate welded with an embedded steel plate.
Furthermore, in order to better realize the invention, a reinforcing rib plate welded with the embedded steel plate is welded on one side of the limiting structure, which is far away from the arch springing.
The beneficial effect that this scheme obtained is:
(1) the technical scheme can utilize the limiting structure to play a role in positioning and limiting the installation of the arch springing, when the arch springing is installed, the positioning and installation precision can be improved, repeated debugging is avoided, the construction efficiency is favorably improved, the arch springing is supported by using the concrete bearing platform, the integral height of the concrete bearing platform can be adjusted according to the actual condition of a construction site so as to adapt to the installation of the arch springing, the position of the arch springing is ensured to meet the construction requirement, compared with a profile steel supporting upright post, the production cost of the concrete bearing platform is lower, the concrete bearing platform has enough strength to meet the supporting requirement, and the concrete bearing platform can be used as a permanent supporting system to support the arch springing, so that the construction period is increased and the resource waste caused by cutting off the profile steel supporting upright;
(2) because the special structure of hunch foot, there is lateral shifting's motion trend in the hunch foot and leads to the position accuracy of hunch foot to probably change, leads to later stage construction can influence the installation of bridge and the precision, the quality of bridge, utilizes limit structure can support, spacing to the hunch foot from the side, after the hunch foot is installed, avoids the hunch foot to take place the displacement again and guarantees the position accuracy of hunch foot.
Drawings
FIG. 1 is a schematic structural view of a concrete cap;
FIG. 2 is a schematic structural diagram of an embedded steel plate;
fig. 3 is a schematic view of the installation of the arch foot.
Wherein: 1-concrete bearing platform, 11-bearing platform foundation, 12-concrete support column, 2-embedded steel plate, 21-embedded rib, 3-limit structure and 4-arch foot.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
Example 1:
in this embodiment, a structure that is used for pre-buried installation of tie rod arch bridge steel construction hunch foot, includes concrete cushion cap 1, the pre-buried steel sheet 2 of a plurality of setting on concrete cushion cap 1 and the limit structure 3 of setting on pre-buried steel sheet 2.
This scheme adopts concrete cushion cap 1 to replace traditional shaped steel support post to support hunch foot 4, when installation hunch foot 4, spacing structure 3 on the utilization concrete cushion cap 1 fixes a position hunch foot 4, make hunch foot 4 aim at with the mounted position fast, place it on concrete cushion cap 1 after 4 location hunch feet are accomplished again, because spacing structure 3 installs on pre-buried steel sheet 2, can increase its rigidity, avoid spacing structure 3 to take place the displacement and guarantee spacing structure 3's position precision.
The concrete bearing platform 1 is made of steel bars and concrete, can meet the strength requirement of the supporting arch springing 4, and can be constructed on site. Compared with the traditional profile steel supporting stand column, the construction of the concrete bearing platform 1 has low requirements on construction environment, the accuracy and the stability of the structure of the concrete bearing platform can be guaranteed, the self-inclination is guaranteed, the construction cost and the transportation cost are lower, the concrete bearing platform 1 can serve as a permanent supporting system to become a part of a bridge, the step of cutting off the profile steel supporting stand column after the arch springing 4 is installed is omitted, the construction period is favorably shortened, and the material waste is avoided.
Example 2:
on the basis of the above embodiment, in this embodiment, the concrete bearing platform 1 is cast twice, the bearing platform foundation 11 is formed by casting for the first time, the plurality of concrete support columns 12 are cast on the bearing platform foundation 11, and the embedded steel plates 2 are arranged on the tops of the concrete support columns 12.
Under the condition that the concrete support columns 12 are guaranteed to have enough strength, the arch springing 4 is supported by the concrete support columns 12, and the space around the concrete support columns 12 is convenient for construction personnel to carry out other construction steps. After the concrete support column 12 is installed, the space between the concrete support column 12 and the concrete support column 12 is poured, so that the concrete bearing platform 1 is completely filled.
When pouring, the steel reinforcement mesh cage for forming the reinforced concrete is welded with the arch springing 4, so that the connection strength of the arch springing 4 and the concrete bearing platform 1 is enhanced.
Example 3:
on the basis of the above embodiment, in this embodiment, the lower surface of the embedded steel plate 2 is provided with a plurality of embedded bars 21 embedded in the concrete bearing platform 1.
The connection strength between the embedded steel plate 2 and the concrete bearing platform 1 can be increased by utilizing the embedded ribs 21, so that the embedded steel plate 2 keeps stable in position and the positioning and the installation of the arch springing 4 are prevented from being adversely affected. The embedded bars 21 can also be welded with a steel reinforcement mesh cage of the concrete bearing platform 1 so as to further increase the connection strength of the embedded steel plates 2 and the concrete bearing platform 1.
The embedded steel plates 2 are distributed around the arch springing 4 according to the installation position of the arch springing 4, and the limiting structures 3 are arranged in the direction in which the arch springing 4 has a moving trend.
The arch springing 4 is an inclined structure, under the action of gravity, the arch springing 4 applies downward pressure to a structure below, and tends to move towards the horizontal direction, and if the arch springing 4 is not limited, the position of the arch springing 4 is changed under the action of gravity, so that the installation of the bridge is influenced. The limiting structure 3 is arranged in the direction in which the arch springing 4 has the moving trend, so that the arch springing 4 can be limited by the limiting structure 3, and the displacement of the arch springing is avoided.
In this embodiment, the limiting structure 3 is a steel plate welded to the embedded steel plate 2. The steel plate is selected to ensure that the limiting structure 3 has certain strength and rigidity, and large deformation or damage caused by the pressure of the arch springing 4 is avoided. And be connected through welding and pre-buried steel sheet 2 and can increase limit structure 3's stability.
And a reinforcing rib plate welded with the embedded steel plate 2 is welded on one side of the limiting structure 3 far away from the arch springing. The rigidity and the bearing capacity of the limiting structure 3 can be increased by utilizing the reinforcing rib plate, and the deformation of the limiting structure 3 is avoided, so that the stability of the mechanism for keeping the arch springing 4 is facilitated.
Limiting structure 3 also can choose the steel sheet of L type for use, is favorable to increasing its intensity and rigidity itself, can also carry on spacingly to it in the corner of hunch foot 4, strengthens spacing effect.
In this embodiment, other undescribed contents are the same as those in the above embodiment, and thus are not described again.
The foregoing is only a preferred embodiment of the present invention, and the present invention is not limited thereto in any way, and any simple modification, equivalent replacement and improvement made to the above embodiment within the spirit and principle of the present invention still fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides a structure that is used for tied arch bridge steel construction arch foot to pre-buried installation which characterized in that: the concrete bearing platform comprises a concrete bearing platform (1), a plurality of embedded steel plates (2) arranged on the concrete bearing platform (1) and limiting structures (3) arranged on the embedded steel plates (2).
2. The structure for the pre-buried installation of the tied arch bridge steel structure arch springing according to claim 1, wherein: the concrete bearing platform (1) is poured twice, a bearing platform foundation (11) is formed by pouring for the first time, a plurality of concrete supporting columns (12) are poured on the bearing platform foundation (11), and the embedded steel plates (2) are arranged on the tops of the concrete supporting columns (12).
3. The structure for the pre-buried installation of the tied arch bridge steel structure arch springing according to claim 2, wherein: and the concrete bearing platform (1) pours the space between the concrete support columns (12) for the second time.
4. The structure for the pre-buried installation of the tied arch bridge steel structure arch springing according to claim 1, wherein: the lower surface of the embedded steel plate (2) is provided with a plurality of embedded ribs (21) embedded into the concrete bearing platform (1).
5. The structure for tied arch bridge steel structure arch foot pre-buried installation according to claim 4, characterized in that: the embedded steel plates (2) are distributed around the arch springing according to the installation position of the arch springing, and the limiting structures (3) are arranged in the direction in which the arch springing has a moving trend.
6. The structure for tied arch bridge steel structure arch foot pre-buried installation of claim 5, wherein: the limiting structure (3) is made of a steel plate welded with the embedded steel plate (2).
7. The structure for tied arch bridge steel structure arch foot pre-buried installation of claim 6, wherein: and a reinforcing rib plate welded with the embedded steel plate (2) is welded on one side of the limiting structure (3) far away from the arch springing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910909674.6A CN110593082A (en) | 2019-09-25 | 2019-09-25 | Structure for pre-embedding installation of tied arch bridge steel structure arch foot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910909674.6A CN110593082A (en) | 2019-09-25 | 2019-09-25 | Structure for pre-embedding installation of tied arch bridge steel structure arch foot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110593082A true CN110593082A (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910909674.6A Pending CN110593082A (en) | 2019-09-25 | 2019-09-25 | Structure for pre-embedding installation of tied arch bridge steel structure arch foot |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH083937A (en) * | 1994-06-09 | 1996-01-09 | Kajima Corp | Repair method for existing bridge |
| CN201059018Y (en) * | 2007-06-18 | 2008-05-14 | 河北建设集团有限公司 | Arch abutment mounting locating components for large-span steel arch structure |
| CN103255707A (en) * | 2013-06-05 | 2013-08-21 | 中交第一公路勘察设计研究院有限公司 | Fixing structure of arc feet of steel corrugated plate arc arch bridge |
| CN106480823A (en) * | 2015-12-24 | 2017-03-08 | 中铁二局集团有限公司 | Vaulted beam device and its localization method |
| CN206956554U (en) * | 2017-05-25 | 2018-02-02 | 中铁上海工程局集团第五工程有限公司 | Space variant steel arch bridge base fast positioning erecting device |
| CN207700070U (en) * | 2017-12-27 | 2018-08-07 | 中铁六局集团天津铁路建设有限公司 | Tie-rod arch bridge abutment embedded parts positioning device |
| CN109629449A (en) * | 2019-01-29 | 2019-04-16 | 中铁大桥局集团有限公司 | A kind of steel case arch bridge arch springing toughened internal stress installation locating support and alignment method |
-
2019
- 2019-09-25 CN CN201910909674.6A patent/CN110593082A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH083937A (en) * | 1994-06-09 | 1996-01-09 | Kajima Corp | Repair method for existing bridge |
| CN201059018Y (en) * | 2007-06-18 | 2008-05-14 | 河北建设集团有限公司 | Arch abutment mounting locating components for large-span steel arch structure |
| CN103255707A (en) * | 2013-06-05 | 2013-08-21 | 中交第一公路勘察设计研究院有限公司 | Fixing structure of arc feet of steel corrugated plate arc arch bridge |
| CN106480823A (en) * | 2015-12-24 | 2017-03-08 | 中铁二局集团有限公司 | Vaulted beam device and its localization method |
| CN206956554U (en) * | 2017-05-25 | 2018-02-02 | 中铁上海工程局集团第五工程有限公司 | Space variant steel arch bridge base fast positioning erecting device |
| CN207700070U (en) * | 2017-12-27 | 2018-08-07 | 中铁六局集团天津铁路建设有限公司 | Tie-rod arch bridge abutment embedded parts positioning device |
| CN109629449A (en) * | 2019-01-29 | 2019-04-16 | 中铁大桥局集团有限公司 | A kind of steel case arch bridge arch springing toughened internal stress installation locating support and alignment method |
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Application publication date: 20191220 |
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| RJ01 | Rejection of invention patent application after publication |