CN110952439A - Self-resetting leading plate structure suitable for seamless bridge and method thereof - Google Patents
Self-resetting leading plate structure suitable for seamless bridge and method thereof Download PDFInfo
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- CN110952439A CN110952439A CN201911406019.5A CN201911406019A CN110952439A CN 110952439 A CN110952439 A CN 110952439A CN 201911406019 A CN201911406019 A CN 201911406019A CN 110952439 A CN110952439 A CN 110952439A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 210000002435 tendon Anatomy 0.000 claims description 23
- 238000010276 construction Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 10
- 238000013459 approach Methods 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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Abstract
The invention provides a self-resetting guide plate structure suitable for a seamless bridge and a method thereof, wherein the self-resetting guide plate structure comprises a bridge abutment, a main beam and a guide plate, wherein the main beam is arranged on the bridge abutment, the guide plate is fixedly connected with the main beam, the guide plate comprises a horizontal plate fixedly connected with the main beam and a vertical plate, the horizontal plate deviates from one end of the main beam and extends to the lower part, an expanding foundation is fixed at the lower end of the vertical plate, unbonded prestressed ribs are arranged in the vertical plate, the upper ends of the unbonded prestressed ribs are anchored at the top of the guide plate, and the lower ends of the unbonded prestressed ribs are anchored at the bottom of the expanding foundation.
Description
Technical Field
The invention relates to a self-resetting leading plate structure suitable for a seamless bridge and a method thereof.
Background
Bridge expansion joints are weak points in the design of bridge structures, have become one of the difficult problems in the construction and maintenance of bridges, and are expensive and require long-term maintenance. Designers and scholars in China carry out valuable exploration on the aspects of mechanisms, performance, materials and the like of the expansion joint, play a positive role in solving the problem of longitudinal deformation of the bridge, but cannot fundamentally solve the problem that the expansion joint is easy to damage. Along with the development of economy, the traffic pressure is increased, the damage phenomenon of the bridge expansion joint is increasingly serious, and the pressure for maintaining the bridge expansion joint is also increased increasingly due to the increase of the maintenance period and the maintenance cost.
The problem of bridge expansion joint fragile is solved, mainly realize through improving telescoping device or canceling the expansion joint. The expansion joint can be improved only by reducing the replacement period and the damage degree of the expansion joint, but the problems of maintenance and replacement of the expansion joint cannot be fundamentally solved, the problems of difficult maintenance and high maintenance cost still exist, and the method for improving the expansion joint only can treat the symptoms and not the root causes. The expansion joint is reduced or even cancelled, so that the problem of damage caused by the expansion joint of the bridge in maintenance and replacement can be fundamentally solved, the integrity of the bridge is improved, and the disaster bearing capacity of the bridge is also improved.
The bridge without expansion joint features that it has integral bridge abutment, integral upper structure and flexible pile foundation and no expansion joint is used in the bridge abutment and bridge deck. The structure form of the non-expansion joint bridge can be a single span type or a multi-span continuous type. In this bridge type structure, the entire deck (from one end approach to the other) is continuous, and the concrete deck and the approach deck are also continuous and integral with the abutment. The expansion joint and the movable support at the tail end of the bridge deck are replaced by the control joint at the tail end of the guide plate.
Disclosure of Invention
The invention improves the problems, namely the technical problems to be solved by the invention are that the damage phenomenon of the bridge expansion joint is increasingly serious along with the increase of traffic pressure, and the problems of difficult maintenance and high maintenance cost exist.
The specific embodiment of the invention is as follows: the utility model provides a from restoring to throne draw plate structure suitable for seamless bridge, includes the abutment, take on the girder on the abutment and with girder fixed connection's draw plate, the draw plate is L shape, the draw plate includes the vertical board that deviates from girder one end to the lower part extension with girder fixed connection's horizontal plate and horizontal plate, the lower extreme of vertical board is fixed with and enlarges the basis, vertical inboard is provided with unbonded prestressing tendons, unbonded prestressing tendons upper end anchor is in the top of draw plate, and unbonded prestressing tendons lower extreme anchor is in the bottom that enlarges the basis.
Furthermore, the upper surface of the guide plate is provided with an upper groove, the bottom surface of the enlarged foundation is provided with a lower groove, the upper end of the unbonded prestressed tendon extends out of the upper groove and is fixed through an anchorage device, and the lower end of the unbonded prestressed tendon extends out of the lower groove and is fixed through the anchorage device.
Furthermore, an angle steel is fixed between the peripheral side of the vertical plate and the upper surface of the enlarged foundation, one end of the angle steel is fixed on the outer wall of the vertical plate through a screw, and the other end of the angle steel is fixed on the top surface of the enlarged foundation through a screw.
Further, the upper edge of the horizontal plate is consistent with the upper edge of the main beam.
Furthermore, one side of the vertical plate, which is far away from the main beam, is provided with a bearing platform for bearing a guide road surface.
Furthermore, the top of the vertical plate is jointed with the lower surface of the horizontal plate and cast in place with the horizontal plate into a whole.
Further, the horizontal plate is connected with the main beam through a steel bar.
The invention also comprises a self-resetting method suitable for the seamless bridge, which comprises an abutment and a main beam lapped on the abutment, wherein one side of the abutment is provided with a guide plate fixedly connected with the main beam, the guide plate is L-shaped, the guide plate comprises a horizontal plate fixedly connected with the main beam and a vertical plate extending downwards from one end of the horizontal plate, which deviates from the main beam, the lower end of the vertical plate is fixedly provided with an expanding foundation, the vertical plate is internally provided with unbonded prestressed tendons, the upper ends of the unbonded prestressed tendons are anchored at the tops of the guide plates, the lower ends of the unbonded prestressed tendons are anchored at the bottom of the expanding foundation, the upper surface of the guide plate is provided with an upper groove, the bottom surface of the expanding foundation is provided with a lower groove, the upper ends of the unbonded prestressed tendons extend out of the upper groove and are fixed through an anchorage device, the lower ends extend out of the lower groove and are fixed through an anchorage device, angle steel is fixed, one end of the angle steel is fixed on the outer wall of the vertical plate through a screw, and the other end of the angle steel is fixed on the top surface of the enlarged foundation through a screw.
Compared with the prior art, the invention has the following beneficial effects: the invention provides the self-resetting capability and the anti-overturning capability of the guide plate under the action of an earthquake by utilizing the flexibility of the L-shaped guide plate vertical plate and the unbonded prestressed tendons. Meanwhile, angle steel is arranged between the vertical plate and the enlarged foundation in the embodiment, the side force resistance is improved by utilizing the angle steel, the earthquake energy is consumed, the combination of the prestressed tendons and the angle steel not only has good self-resetting capability, but also has higher consumption capability, and the damage of the seamless bridge can be reduced to a certain extent, so that the method is suitable for the seamless bridge with higher requirements on deformation and earthquake resistance.
Drawings
Fig. 1 is a schematic side view of a seamless access panel.
Fig. 2 is a partially enlarged view a of fig. 1.
Fig. 3 is a front view structure schematic diagram of the guide plate vertical plate.
Fig. 4 is a schematic top view of a seamless access panel.
In the figure: 1-main beam, 2-bridge abutment, 3-horizontal plate, 4-vertical plate, 5-enlarged foundation, 51-bearing platform, 6-unbonded prestressed tendon, 7-guide road surface, 8-angle steel, 9-anchor, 10-upper groove, 11-lower groove and 12-reinforcing steel bar.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-4, a from restoring to throne draw plate structure suitable for seamless bridge, include abutment 2, take girder 1 on the abutment and with girder fixed connection's draw plate, the draw plate is L shape, the draw plate includes 3 and the horizontal plate of horizontal plate with girder fixed connection deviate from girder one end to the vertical board 4 of lower part extension, the lower extreme of vertical board 4 is fixed with and enlarges basis 5, be provided with unbonded prestressing tendons 6 in the vertical board 4, unbonded prestressing tendons upper end anchor is in the top of draw plate, and unbonded prestressing tendons lower extreme anchor is in the bottom that enlarges the basis.
The upper surface of the guide plate is provided with an upper groove 10, the bottom surface of the enlarged foundation is provided with a lower groove 11, the upper end of the unbonded prestressed tendon extends out of the upper groove and is fixed through an anchorage device, the lower end of the unbonded prestressed tendon extends out of the lower groove and is fixed through an anchorage device 9, and the unbonded prestressed tendon provides self-resetting capability and anti-overturning capability of the guide plate under the action of an earthquake
And angle steel 5 is fixed between the peripheral side of the vertical plate and the upper surface of the enlarged foundation, namely the angle steel is arranged between the outer part of the vertical plate and the enlarged foundation and symmetrically arranged on both sides of the vertical plate in the longitudinal bridge direction and the transverse bridge direction.
One end of the angle steel 5 is fixed on the outer wall of the vertical plate through a screw, and the other end of the angle steel is fixed on the top surface of the enlarged foundation 5 through a screw.
In this embodiment, the thickness of the horizontal plate is the thickness of a common seamless bridge approach plate, the vertical plate is slightly thinner than the horizontal plate, the upper edge of the horizontal plate is consistent with the upper edge of the main beam, the top of the vertical plate is connected with the lower surface of the horizontal plate, and the vertical plate and the horizontal plate are cast in place into a whole, and a bearing platform 51 for bearing the approach road surface 7 is arranged on one side of the vertical plate, which is far away from the main beam.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the invention discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a from restoring to throne draw plate structure suitable for seamless bridge, its characterized in that, include the abutment, take on the girder on the abutment and with girder fixed connection's draw plate, the draw plate is L shape, the draw plate includes the vertical board that deviates from girder one end to the lower part extension with girder fixed connection's horizontal plate and horizontal plate, the lower extreme of vertical board is fixed with and enlarges the basis, be provided with unbonded prestressing tendons in the vertical board, unbonded prestressing tendons upper end anchor in the top of draw plate, unbonded prestressing tendons lower extreme anchor in the bottom that enlarges the basis.
2. The self-resetting anchor plate structure suitable for the seamless bridge of claim 1, wherein the upper surface of the anchor plate is provided with an upper groove, the bottom surface of the enlarged foundation is provided with a lower groove, the upper end of the unbonded prestressed tendon extends out of the upper groove and is fixed by an anchorage device, and the lower end of the unbonded prestressed tendon extends out of the lower groove and is fixed by an anchorage device.
3. A self-resetting strike plate construction suitable for use in a seamless bridge according to claim 1 or 2, wherein: an angle steel is fixed between the peripheral side of the vertical plate and the upper surface of the enlarged foundation, one end of the angle steel is fixed on the outer wall of the vertical plate through a screw, and the other end of the angle steel is fixed on the top surface of the enlarged foundation through a screw.
4. A self-resetting strike plate construction suitable for use in a seamless bridge according to claim 1 or 2, wherein: the upper edge of the horizontal plate is consistent with the upper edge of the main beam, and the horizontal plate is connected with the main beam through a steel bar.
5. The self-resetting leader board construction suitable for a seamless bridge according to claim 1, wherein the side of the vertical board facing away from the main beam has a bearing platform for bearing a leader road surface.
6. A self-resetting strike plate construction suitable for use in a seamless bridge according to claim 1, wherein: the top of the vertical plate is jointed with the lower surface of the horizontal plate and cast in situ with the horizontal plate into a whole.
7. A self-resetting strike plate construction suitable for use in a seamless bridge according to claim 1, wherein: the horizontal plate is connected with the main beam through a steel bar.
8. A self-resetting method suitable for a seamless bridge is characterized by comprising a bridge abutment and a main beam arranged on the bridge abutment, wherein a guide plate fixedly connected with the main beam is arranged on one side of the bridge abutment and is L-shaped, the guide plate comprises a horizontal plate fixedly connected with the main beam and a vertical plate extending from one end of the horizontal plate, which deviates from the main beam, to the lower part, an expansion foundation is fixed at the lower end of the vertical plate, unbonded prestressed ribs are arranged in the vertical plate, the upper ends of the unbonded prestressed ribs are anchored at the tops of the guide plate, the lower ends of the unbonded prestressed ribs are anchored at the bottom of the expansion foundation, an upper groove is formed in the upper surface of the guide plate, a lower groove is formed in the bottom surface of the expansion foundation, the upper ends of the unbonded prestressed ribs extend out of the upper groove and are fixed through anchors, the lower ends extend out of the lower groove and are fixed through anchors, and angle steel is fixed between the peripheral side, one end of the angle steel is fixed on the outer wall of the vertical plate through a screw, and the other end of the angle steel is fixed on the top surface of the enlarged foundation through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406019.5A CN110952439B (en) | 2019-12-31 | 2019-12-31 | Self-resetting guide plate structure suitable for seamless bridge and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406019.5A CN110952439B (en) | 2019-12-31 | 2019-12-31 | Self-resetting guide plate structure suitable for seamless bridge and method thereof |
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| CN110952439A true CN110952439A (en) | 2020-04-03 |
| CN110952439B CN110952439B (en) | 2024-05-31 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005290706A (en) * | 2004-03-31 | 2005-10-20 | Chiyoda Engineering Consultants Co Ltd | Prestress introducing method for steel bridge, and prestress reinforcing structure in steel bridge |
| CN204626243U (en) * | 2015-02-09 | 2015-09-09 | 上海勘测设计研究院有限公司 | Seamless bridge abutment structure |
| CN108677690A (en) * | 2018-05-28 | 2018-10-19 | 北京工业大学 | Energy dissipating Self-resetting bilayer rectangle hollow concrete filled steel tube waves Bridge Pier Structure System |
| CN109853611A (en) * | 2019-01-18 | 2019-06-07 | 大连交通大学 | A kind of construction method of the Retaining Wall of module splicing |
| CN110093851A (en) * | 2019-06-20 | 2019-08-06 | 福州大学 | One kind being suitable for seamless bridge corbel back slab construction and its construction method |
| CN110184901A (en) * | 2019-06-20 | 2019-08-30 | 福州大学 | Seamless bridge corbel back slab construction and its design method with X-shaped steel muscle |
| CN211645950U (en) * | 2019-12-31 | 2020-10-09 | 福州大学 | Self-resetting guide plate structure suitable for seamless bridge |
-
2019
- 2019-12-31 CN CN201911406019.5A patent/CN110952439B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005290706A (en) * | 2004-03-31 | 2005-10-20 | Chiyoda Engineering Consultants Co Ltd | Prestress introducing method for steel bridge, and prestress reinforcing structure in steel bridge |
| CN204626243U (en) * | 2015-02-09 | 2015-09-09 | 上海勘测设计研究院有限公司 | Seamless bridge abutment structure |
| CN108677690A (en) * | 2018-05-28 | 2018-10-19 | 北京工业大学 | Energy dissipating Self-resetting bilayer rectangle hollow concrete filled steel tube waves Bridge Pier Structure System |
| CN109853611A (en) * | 2019-01-18 | 2019-06-07 | 大连交通大学 | A kind of construction method of the Retaining Wall of module splicing |
| CN110093851A (en) * | 2019-06-20 | 2019-08-06 | 福州大学 | One kind being suitable for seamless bridge corbel back slab construction and its construction method |
| CN110184901A (en) * | 2019-06-20 | 2019-08-30 | 福州大学 | Seamless bridge corbel back slab construction and its design method with X-shaped steel muscle |
| CN211645950U (en) * | 2019-12-31 | 2020-10-09 | 福州大学 | Self-resetting guide plate structure suitable for seamless bridge |
Non-Patent Citations (1)
| Title |
|---|
| 陈宝春;付毳;庄一舟;BRUNO BRISEGHELLA;: "中国无伸缩缝桥梁应用现状与发展对策", 中外公路, no. 01, 6 March 2018 (2018-03-06) * |
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