CN1740448A - Composite reinforcing structure for main arch circle - Google Patents
Composite reinforcing structure for main arch circle Download PDFInfo
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- CN1740448A CN1740448A CN 200510105302 CN200510105302A CN1740448A CN 1740448 A CN1740448 A CN 1740448A CN 200510105302 CN200510105302 CN 200510105302 CN 200510105302 A CN200510105302 A CN 200510105302A CN 1740448 A CN1740448 A CN 1740448A
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- main arch
- arch circle
- circle
- reinforcing structure
- composite reinforcing
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Abstract
The present invention discloses one kind composite reinforcing structure for main arch circle. The composite reinforcing structure consists of main arc circle and reinforcing reinforced concrete hoop layer, which includes mortar anchor rods inserted into the main arch circle and steel bar lattice around the main arch circle and connected with the mortar anchor rods. The in-situ deposited concrete on the steel bar lattice forms the reinforcing reinforced concrete hoop layer around the main arch circle. Adopting the technological scheme of the present invention can raise the bearing capacity of bridge by 10-50 %, and compared with re-building bridge, this has 80-90 % lower engineering cost and greatly shortened construction period.
Description
Technical field
The present invention relates to a kind of ruggedized construction of bridge, specifically, relate to a kind of main arch circle ruggedized construction of arch bridge.
Background technology
Existing a large amount of old bridge is on the low side because of former design standard, and along with the rapid growth of the traffic volume, overweight and overrun vehicle damages bridge, and bridge itself is aging, makes increasing bridge that the hypodynamic phenomenon of carrying take place, and bridge is demanded reinforcing urgently.And in these bridges, the arch bridge proportion is more than 60%.
Summary of the invention
The present invention is directed to arch type bridge and carry hypodynamic problem, a kind of composite reinforcing structure for main arch circle that can improve the bridge ultimate bearing capacity is provided.
The present invention is achieved in that a kind of composite reinforcing structure for main arch circle, is made of main arch circle and steel bar concrete cuff back-up coat; Described steel bar concrete cuff back-up coat comprises grouting rock bolt, steel grid; Wherein, grouting rock bolt anchors into the main arch circle; The steel mesh reinforcement lattice ring encloses the main arch circle and is connected with grouting rock bolt; Cast-in-place concrete forms the steel bar concrete cuff back-up coat around described main arch circle on steel grid.
The length of described grouting rock bolt is 18-25cm, and the length that anchors into the main arch circle is 12-18cm; Described grouting rock bolt is staggered and arranges along described main arch circle is horizontal and vertical; Described steel grid is made of circumferential reinforcement and longitudinal reinforcement interconnection.
Adopt technical scheme of the present invention, can improve bridge capacity 210 50% (being equivalent to 1-2 level class of loading), save construction costs 80-90%, greatly the reduction of erection time, have bigger technology, economic and social benefit than reconstruction expenses.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the distribution map of grouting rock bolt and steel grid.Among the figure
1. main arch circle 2. steel bar concrete cuff back-up coats 21. grouting rock bolts
22. steel grid 23. concretes
The specific embodiment
Referring to Fig. 1, composite reinforcing structure for main arch circle of the present invention is made of main arch circle 1 and steel bar concrete cuff back-up coat 2; Described steel bar concrete cuff back-up coat 2 comprises grouting rock bolt 21, steel grid 22; Wherein, grouting rock bolt 21 anchors into main arch circle 1; Steel grid 22 rings enclose main arch circle 1 and are connected with grouting rock bolt 21; The steel bar concrete cuff back-up coat 2 that Cast-in-place concrete 23 forms around described main arch circle 1 on steel grid 22.
The present invention has utilized the structure principle that intensity improves under the three-phase pressured state; set up one deck steel bar concrete cuff along former main arch circle 1 ring-type; combine with the effective of former main arch circle by newly establishing the steel bar concrete cuff; increased main arch circle bearing cross-section; reach compatible deformation; bear mobile load jointly, improve the bridge ultimate bearing capacity.After adopting the present invention that former main arch circle 1 is reinforced, the change face crack is underbead crack, and stress intensity factor reduces significantly, delays main arch circle crackle and carries out.
Referring to Fig. 1, Fig. 2, in order to improve the effect of reinforcing, the length of described grouting rock bolt 21 is 18-25cm, and the length that anchors into main arch circle 1 is 12-18cm; Described grouting rock bolt 21 is staggered and arranges along described main arch circle is horizontal and vertical, and it is corresponding with steel grid, makes each grid to realize being connected and fixed on the diagonal angle; Described steel grid 22 is made of circumferential reinforcement and longitudinal reinforcement interconnection.
Describe the present invention with way of example above, but the invention is not restricted to above-mentioned specific embodiment, all protection domains that any improvement that the present invention did or modification are all belonged to claim of the present invention.
Claims (4)
1. a composite reinforcing structure for main arch circle is characterized in that: be made of main arch circle (1) and steel bar concrete cuff back-up coat (2); Described steel bar concrete cuff back-up coat (2) comprises grouting rock bolt (21), steel grid (22); Wherein, grouting rock bolt (21) anchors into main arch circle (1); Steel grid (22) ring encloses main arch circle (1) and is connected with grouting rock bolt (21); Go up the steel bar concrete cuff back-up coat (2) of Cast-in-place concrete (23) formation at steel grid (22) around described main arch circle (1).
2. a kind of composite reinforcing structure for main arch circle according to claim 1 is characterized in that: the length of described grouting rock bolt (21) is 18-25cm, and the length that anchors into main arch circle (1) is 12-18cm.
3. a kind of composite reinforcing structure for main arch circle according to claim 1 and 2 is characterized in that: described grouting rock bolt (21) is staggered and arranges along described main arch circle is horizontal and vertical.
4. a kind of composite reinforcing structure for main arch circle according to claim 1 is characterized in that: described steel grid (22) is made of circumferential reinforcement and longitudinal reinforcement interconnection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510105302 CN1740448A (en) | 2005-09-23 | 2005-09-23 | Composite reinforcing structure for main arch circle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510105302 CN1740448A (en) | 2005-09-23 | 2005-09-23 | Composite reinforcing structure for main arch circle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1740448A true CN1740448A (en) | 2006-03-01 |
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ID=36092968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510105302 Pending CN1740448A (en) | 2005-09-23 | 2005-09-23 | Composite reinforcing structure for main arch circle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1740448A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631346A (en) * | 2015-01-16 | 2015-05-20 | 北京建筑大学 | Two-hinged arch bridge double sided one-way pressed bar reinforced structure and method |
| CN107100091A (en) * | 2017-05-09 | 2017-08-29 | 浙江大学宁波理工学院 | The method of prestress steel twist gauze polymer mortar reinforced steel concrete ribbed arch bridge |
| CN108867410A (en) * | 2018-07-18 | 2018-11-23 | 重庆交通大学 | The ribbed arch bridge ruggedized construction and method combined based on UHPC and presstressed reinforcing steel |
| CN109137762A (en) * | 2018-10-24 | 2019-01-04 | 重庆交通大学 | A kind of waveform arch bar Strengthening Method of Two-way Curved Arch Bridges |
| CN110700862A (en) * | 2019-09-10 | 2020-01-17 | 甘肃路桥建设集团有限公司 | Arch frame stabilizing device and using method thereof |
| CN111827147A (en) * | 2020-08-10 | 2020-10-27 | 广西交科集团有限公司 | Box-type arch bridge splicing section and arch foot section reinforcing method |
-
2005
- 2005-09-23 CN CN 200510105302 patent/CN1740448A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631346A (en) * | 2015-01-16 | 2015-05-20 | 北京建筑大学 | Two-hinged arch bridge double sided one-way pressed bar reinforced structure and method |
| CN107100091A (en) * | 2017-05-09 | 2017-08-29 | 浙江大学宁波理工学院 | The method of prestress steel twist gauze polymer mortar reinforced steel concrete ribbed arch bridge |
| CN108867410A (en) * | 2018-07-18 | 2018-11-23 | 重庆交通大学 | The ribbed arch bridge ruggedized construction and method combined based on UHPC and presstressed reinforcing steel |
| CN109137762A (en) * | 2018-10-24 | 2019-01-04 | 重庆交通大学 | A kind of waveform arch bar Strengthening Method of Two-way Curved Arch Bridges |
| CN110700862A (en) * | 2019-09-10 | 2020-01-17 | 甘肃路桥建设集团有限公司 | Arch frame stabilizing device and using method thereof |
| CN111827147A (en) * | 2020-08-10 | 2020-10-27 | 广西交科集团有限公司 | Box-type arch bridge splicing section and arch foot section reinforcing method |
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