CN208395849U - A kind of prestress anchorage cable open cut foundation - Google Patents
A kind of prestress anchorage cable open cut foundation Download PDFInfo
- Publication number
- CN208395849U CN208395849U CN201820516930.6U CN201820516930U CN208395849U CN 208395849 U CN208395849 U CN 208395849U CN 201820516930 U CN201820516930 U CN 201820516930U CN 208395849 U CN208395849 U CN 208395849U
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- foundation
- open cut
- cable
- prestress anchorage
- cut foundation
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Abstract
The utility model relates to a kind of prestress anchorage cable open cut foundations, and in open cut foundation is arranged in rock foundation, open cut foundation is fixed in bridge pier bottom；Prestressed anchor cable system is provided between rock foundation and open cut foundation；Prestressed anchor cable system includes the prestressed cable anchorage end of prestress anchorage cable and its end；Prestress anchorage cable top is located at the top of open cut foundation, and is fixed by the prestressed cable anchorage end on top, and open cut foundation rock foundation below is squeezed into prestress anchorage cable lower part.The utility model between rock foundation and open cut foundation by being arranged prestress anchorage cable, open cut foundation is anchored on rock foundation, it is equivalent to and is applied with precompression in advance to open cut foundation, the tensile stress generated when coming earthquake, it can be balanced by precompression, which improves the tension bearing capacitys of open cut foundation, substantially improve the tension ability of open cut foundation, the quake-resistant safety performance for improving open cut foundation has ensured structure safety.
Description
Technical field
The utility model belongs to bridge structure building foundation engineering technical field, and in particular to a kind of prestress anchorage cable open cut
Basis.
Background technique
The open cut foundation of bridge structure is arranged in the preferable rock texture of foundation, compared with pile foundation, has and buries
The depth, stress is clear, bearing capacity is high, it is easy for construction, save the advantages that cost, therefore in current bridge foundation design, if
Buried depth of bedrock is shallower, and open cut foundation is still a kind of very competitive base form.However, in high intensity Zone, in level
Under geological process or Vertical Earthquake Loads, the possible tension of open cut foundation, when the compression that open cut foundation generates base contact surface
When less than zero, redistribution occurs for bottom of foundation stress, may collapse when bias further increases, and influences structure safety.
How to set the tensile capacity for improving open cut foundation, make this stress performance is excellent, the good base form of economic performance more
The work of safety seems very necessary.
Summary of the invention
The purpose of the utility model is to provide a kind of prestress anchorage cable open cut foundations, and prestressing force is arranged in the tension side of cushion cap
Open cut foundation and rock foundation are anchored at cooperatively stress, improve the tensile capacity of open cut foundation by anchor cable.
The technology employed by the present utility model is
A kind of prestress anchorage cable open cut foundation, it is characterised in that:
In open cut foundation is arranged in rock foundation, open cut foundation is fixed in bridge pier bottom；
Prestressed anchor cable system is provided between rock foundation and open cut foundation.
Prestressed anchor cable system includes the prestressed cable anchorage end of prestress anchorage cable and its end；
Prestress anchorage cable top is located at the top of open cut foundation, and is fixed by the prestressed cable anchorage end on top, answers in advance
Open cut foundation rock foundation below is squeezed into power anchor cable lower part.
Prestressed anchor cable system includes two column prestress anchorage cables parallel to each other, is located at open cut foundation both sides of the edge.
Open cut foundation is applied with precompression by prestressed anchor cable system；
The section that prestress anchorage cable is located at open cut foundation is prestress anchorage cable free segment, and prestress anchorage cable is located at open cut foundation
Section in following rock foundation is prestressed cable anchorage end.
The utility model has the advantage that
Open cut foundation is anchored at by the utility model by the way that prestress anchorage cable is arranged between rock foundation and open cut foundation
It on rock foundation, is equivalent to and is applied with precompression in advance to open cut foundation, the tensile stress generated when coming earthquake can be by precompressed
Power balances, and which improves the tension bearing capacity of open cut foundation, substantially improves the tension ability of open cut foundation, improves
The quake-resistant safety performance of open cut foundation has ensured structure safety.
Detailed description of the invention
Fig. 1 is prestress anchorage cable open cut foundation elevation.
Fig. 2 is prestress anchorage cable open cut foundation plan view.
In figure, 1- prestressed cable anchorage section, 2- prestress anchorage cable free segment, 3- prestressed cable anchorage end, 4- answers in advance
Power anchor cable system, 5- open cut foundation, 6- rock foundation, 7- bridge pier.
Specific embodiment
The utility model is described in detail With reference to embodiment.
The utility model relates to a kind of prestress anchorage cable open cut foundations, in setting open cut foundation 5, bridge pier 7 in rock foundation 6
Open cut foundation 5 is fixed in bottom.Prestressed anchor cable system 4 is provided between rock foundation 6 and open cut foundation 5.Prestress anchorage cable
System 4 includes the prestressed cable anchorage end 3 of prestress anchorage cable and its end；Prestress anchorage cable top is located at the top of open cut foundation 5
Portion, and it is fixed by the prestressed cable anchorage end 3 on top, and prestress anchorage cable lower part is with squeezing into the rock below of open cut foundation 5
Base 6.
Prestressed anchor cable system 4 includes two column prestress anchorage cables parallel to each other, is located at 5 both sides of the edge of open cut foundation.It is bright
It digs basis 5 and precompression is applied with by prestressed anchor cable system 4；The section that prestress anchorage cable is located at open cut foundation 5 is prestressing force
Free section of anchor cable 2, it is prestressed cable anchorage end 3 that prestress anchorage cable, which is located at the section in 5 or less rock foundation 6 of open cut foundation,.
In work progress, after foundation excavation, setting-out is carried out to base position, determines anchor cable position, is drilled, borehole cleaning, installation
Anchor cable, slip casting maintenance, protects the bared end of anchor cable, pours open cut foundation, after underlying strength reaches design requirement, tensioning is pre-
Stress anchor cable, anchor bolt grouting.Ultimately form a kind of novel open cut foundation structure type with prestress anchorage cable.
The content of the utility model is not limited to cited by embodiment, and those of ordinary skill in the art are practical new by reading this
Type specification and to any equivalent transformation that technical solutions of the utility model are taken, be the claim institute of the utility model
Cover.
Claims (3)
1. a kind of prestress anchorage cable open cut foundation, it is characterised in that:
In open cut foundation (5) are arranged in rock foundation (6), open cut foundation (5) are fixed in bridge pier (7) bottom；
Prestressed anchor cable system (4) are provided between rock foundation (6) and open cut foundation (5)；
Prestressed anchor cable system (4) includes the prestressed cable anchorage end (3) of prestress anchorage cable and its end；
Prestress anchorage cable top is located at the top of open cut foundation (5), and fixed by the prestressed cable anchorage end (3) on top, in advance
Open cut foundation (5) rock foundation below (6) is squeezed into stress anchor cable lower part.
2. a kind of prestress anchorage cable open cut foundation according to claim 1, it is characterised in that:
Prestressed anchor cable system (4) includes two column prestress anchorage cables parallel to each other, is located at open cut foundation (5) both sides of the edge.
3. a kind of prestress anchorage cable open cut foundation according to claim 1, it is characterised in that:
Open cut foundation (5) is applied with precompression by prestressed anchor cable system (4)；
The section that prestress anchorage cable is located at open cut foundation (5) is prestress anchorage cable free segment (2), and prestress anchorage cable is located at open cut base
Section in plinth (5) following rock foundation (6) is prestressed cable anchorage end (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820516930.6U CN208395849U (en) | 2018-04-12 | 2018-04-12 | A kind of prestress anchorage cable open cut foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820516930.6U CN208395849U (en) | 2018-04-12 | 2018-04-12 | A kind of prestress anchorage cable open cut foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208395849U true CN208395849U (en) | 2019-01-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820516930.6U Active CN208395849U (en) | 2018-04-12 | 2018-04-12 | A kind of prestress anchorage cable open cut foundation |
Country Status (1)
| Country | Link |
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| CN (1) | CN208395849U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111254966A (en) * | 2020-03-16 | 2020-06-09 | 浙江省交通规划设计研究院有限公司 | Mountain abutment and pier column foundation structure and construction method thereof |
-
2018
- 2018-04-12 CN CN201820516930.6U patent/CN208395849U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111254966A (en) * | 2020-03-16 | 2020-06-09 | 浙江省交通规划设计研究院有限公司 | Mountain abutment and pier column foundation structure and construction method thereof |
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