CN109281252B - Side span steel beam pushing counterforce device and system - Google Patents
Side span steel beam pushing counterforce device and system Download PDFInfo
- Publication number
- CN109281252B CN109281252B CN201811223741.0A CN201811223741A CN109281252B CN 109281252 B CN109281252 B CN 109281252B CN 201811223741 A CN201811223741 A CN 201811223741A CN 109281252 B CN109281252 B CN 109281252B
- Authority
- CN
- China
- Prior art keywords
- steel beam
- side span
- supporting leg
- span steel
- buttress
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 80
- 239000010959 steel Substances 0.000 title claims abstract description 80
- 238000006243 chemical reaction Methods 0.000 claims description 34
- 239000007787 solid Substances 0.000 claims description 9
- 238000010276 construction Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a side span steel beam pushing counterforce device and a system, wherein the side span steel beam pushing counterforce device comprises a pushing counterforce bracket and a jack fixed on one side of the pushing counterforce bracket facing a steel beam, wherein one side of the pushing counterforce bracket, which is away from the steel beam, is provided with a first supporting leg which horizontally extends and is used for acting on a buttress vertically, and a second supporting leg which vertically extends and is used for acting on the buttress horizontally. The side span steel beam pushing counterforce device can reasonably convert stress, is simple and convenient to install and does not damage the buttress structure.
Description
[ field of technology ]
The invention relates to the technical field of bridge engineering construction, in particular to a side span steel girder pushing counterforce device and a side span steel girder pushing counterforce system.
[ background Art ]
In the traditional construction of a suspension cable or cable-stayed system bridge, a main span steel girder section utilizes a cable (load) crane or a bridge deck crane to vertically lift a steel girder into position, and a side span steel girder is required to be installed and constructed by adopting a full framing due to topography, channel limitation and the like. The closure section is usually arranged between the side span and the main span, and because the steel beam is required to hoist and mount the operation space, the side span steel beam bracket needs to be predeviated to the approach bridge side by a distance of tens of centimeters when being mounted, and after the main span and the side span steel beam section are completely mounted, the side span steel beam is moved to the main span direction in sections or integrally for closure construction, so that the whole side span pushing closure construction is involved.
In the whole pushing closure construction of the side span steel girder, the self weight of the side span steel girder reaches thousands of tons due to the fact that the steel girders are connected into a whole, so that the horizontal force required by pushing is hundreds of tons. In the prior art, the pushing reaction force is required to be provided with an embedded part which is stable enough on the pier top, and a reaction force bracket is welded on the embedded part, so that the whole horizontal force of the side span steel beam is transferred to the bridge pier body. However, such a push reaction device has a number of disadvantages: first, the push reaction bracket needs to resist a horizontal force of hundreds of tons, which can greatly affect the stability of the push reaction bracket. Secondly, the embedded part with huge volume and heavy weight is embedded in the pier body structure, and the installation process is very difficult. Thirdly, the structure between the embedded part and the pier body steel bar has conflict and interference, so that the pier body is locally damaged, the stability of the buttress is weakened, repair work is needed to be carried out on the pier body after pushing construction is finished, and the construction process is complicated.
Therefore, it is necessary to provide a side span steel beam pushing counterforce device which is reasonably transformed in stress, is simple and convenient to install and does not damage the pier structure.
[ invention ]
The invention aims to provide a side span steel beam pushing counterforce device which is reasonable in conversion stress, simple and convenient to install and free from damaging a buttress structure.
It is yet another object of the present invention to provide a side span steel beam thrusting reaction system.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a side is to girder steel top reaction device, includes top reaction bracket and is fixed in the jack of top reaction bracket towards one side of girder steel, the top reaction bracket deviates from the first landing leg that the girder steel was equipped with the horizontal extension and was used for vertical effect to the buttress to and the vertical extension just is used for the horizontal effect to the second landing leg of buttress.
Preferably, a solid cushion block is arranged at the bottom edge of one side of the second supporting leg facing the steel beam.
Preferably, a diagonal bracing is fixedly arranged between the second supporting leg and the solid cushion block.
Preferably, the bottom of the first leg is provided with a height adjusting device.
Preferably, the height adjusting means is a support block juxtaposed in a direction perpendicular to the first leg.
Preferably, a cushion pad is arranged on one surface of the second supporting leg, which acts on the buttress.
Preferably, the bottom of the second leg is flush with the buttress surface.
Preferably, the side surfaces of the first support leg and the second support leg are provided with stiffening ribs.
A side span steel beam pushing reaction system employing a side span steel beam pushing reaction device as described in any one of the preceding claims.
Preferably, the side span steel beam pushing counterforce device acts on the top of the buttress provided with the step structure, the step structure comprises a horizontal plane and a vertical plane which are mutually and perpendicularly connected, the first supporting leg acts on the horizontal plane from the vertical direction, and the second supporting leg abuts against the vertical plane from the horizontal direction.
Compared with the prior art, the invention has the following advantages:
1. according to the side span steel girder pushing counterforce device, the pushing counterforce bracket is arranged to be the first supporting leg which extends horizontally and the second supporting leg which extends vertically, the first supporting leg vertically acts on the top of the buttress, the second supporting leg horizontally acts on the top of the buttress, the horizontal force of the side span steel girder is converted into the moment of the buttress and is offset with the moment of the buttress, and reasonable conversion of the horizontal force of the side span steel girder is achieved.
2. The side span steel girder pushing counterforce device is based on the structural characteristics of the first supporting leg and the second supporting leg, and only the pushing counterforce device is required to be directly placed above the pier top during pushing construction, so that a pier embedded part resisting horizontal shearing force is not required to be arranged, and the construction process is greatly simplified.
3. The side span steel girder pushing counterforce device does not need to be fixed on the embedded part of the buttress during construction, avoids the prior installation of the embedded part during buttress construction, and does not need to repair the buttress after the pushing construction is completed, thereby reducing the interference damage to the buttress structure.
[ description of the drawings ]
FIG. 1 is a schematic view of an exemplary embodiment of a side span steel beam thrusting reaction device of the present invention;
FIG. 2 is a schematic view of another exemplary embodiment of a side span steel beam thrusting reaction device according to the present invention;
fig. 3 is a schematic view of another exemplary embodiment of a side span steel beam thrusting reaction device according to the present invention.
[ detailed description ] of the invention
The invention is further described below with reference to the drawings and exemplary embodiments, wherein like reference numerals refer to like parts throughout. Further, if detailed description of the known art is not necessary to illustrate the features of the present invention, it will be omitted.
In the bridge engineering construction process, the buttress 3 (see fig. 3) is designed into a step shape for adapting to beams with different heights of a main bridge and an approach bridge due to the difference of the heights of the upper structures of the main bridge and the approach bridge, and the buttress 3 with the step structure 31 is shown.
Referring to fig. 1 and 3, the present invention provides a side span steel beam pushing reaction device 1, where the side span steel beam pushing reaction device 1 is suitable for the buttress 3 with the step structure 31, and the side span steel beam pushing reaction device 1 includes a pushing reaction bracket 10 and a jack 11 fixed on a side of the pushing reaction bracket 10 facing the steel beam 2, where a side of the pushing reaction bracket 10 facing away from the steel beam 2 is provided with a first leg 101 extending horizontally and acting vertically on the buttress 3, and a second leg 102 extending vertically and acting horizontally on the buttress 3. By setting the pushing reaction bracket 10 to be a first supporting leg 101 extending horizontally and a second supporting leg 102 extending vertically, the first supporting leg 101 acts on the top of the supporting pier 3 vertically, and the second supporting leg 102 acts on the top of the supporting pier 3 horizontally, so that the horizontal force of the side span steel beam 2 is converted into the moment of the supporting pier 3 and counteracted mutually, and reasonable conversion of the horizontal force of the side span steel beam 2 is realized.
In general, the supporting cushion block 32 is correspondingly arranged at the top of the buttress 3 corresponding to the lower part of the steel beam 2, and in combination with fig. 2, in order to fix the side-span steel beam pushing counterforce device 1 at the top of the buttress 3, a solid cushion block 103 is arranged at the bottom edge of one side of the second supporting leg 102 towards the steel beam 2, and the solid cushion block 103 is used for filling a gap between the pushing counterforce bracket 10 and the supporting cushion block 32, so that the relative stability of the structure of the side-span steel beam pushing counterforce device 1 is ensured. Wherein, the solid cushion block is a cushion block made of materials with higher hardness such as steel. Further, diagonal braces 104 are fixedly arranged between the second supporting legs 102 and the solid cushion blocks 103, so that connection between the solid cushion blocks 103 and the second supporting legs 102 is reinforced, and the solid cushion blocks 103 are prevented from being shifted after horizontal acting force is applied.
Preferably, the bottom of the first leg 101 is provided with a height adjustment device 105, and the height adjustment device 105 is preferably a support block, such as an i-steel, arranged side by side in a direction perpendicular to the first leg 101. The height of the jack 11 is required to exceed the height of the bottom of the steel beam 2, so that the position of the side span steel beam pushing counterforce device 1 is adjustable by arranging the height adjusting device 105, the side span steel beam pushing counterforce device 1 is ensured to have stronger adaptability, and a flexible structural foundation is provided for the position accuracy of the side span steel beam pushing counterforce device 1. The support blocks are juxtaposed in a direction perpendicular to the first leg 101 and adjacent support blocks abut against each other to ensure a sufficient contact area of the i-section steel with the top of the abutment 3.
The side of the second leg 102 acting on the abutment 3 is provided with a cushion 106, and preferably, the cushion 106 may be a protective cushion such as a rubber cushion with a cushioning effect. Because the second supporting leg 102 bears the horizontal acting force transferred from the horizontal direction to the side span steel beam 2, the buffer pad 106 is arranged to buffer and diffuse the horizontal force transferred from the side span steel beam 2, the concrete surface is protected, the surface of the buttress 3 is prevented from being damaged, and the buttress 3 repairing process caused by the damage of the surface of the buttress 3 is saved.
Preferably, the bottom of the second leg 102 is flush with the surface of the abutment 3, the bottom of the second leg 102 abuts against the top of the abutment 3, and the rigid cushion block 103 arranged at the bottom edge of the second leg 102 abuts against the top of the abutment 3 together with the second leg 102, so as to ensure that the stress acting surface between the side span steel beam pushing counterforce device 1 and the abutment 3 is large enough. Preferably, the first leg 101 and the second leg 102 are rectangular, i.e. the contact surfaces of the first leg 101 and the second leg 102 with the abutment 3 are rectangular. Preferably, in order to reduce the dead weight of the side span steel beam pushing counterforce device 1 and reduce the pressure on the abutment 3, the first leg 101 may be provided with other shapes, for example, the first leg 101 may be provided with a right trapezoid, and one right angle side of the first leg 101 abuts against the top of the abutment 3.
Preferably, in order to ensure rigidity of the first leg 101 and the second leg 102, the sides of the first leg 101 and the second leg 102 may be further provided with stiffening ribs. For example, the side surfaces of the first supporting legs 101 are provided with crisscrossed first stiffening ribs 1011, and the second supporting legs 102 are uniformly provided with second stiffening ribs 1021 at intervals along the vertical direction.
The invention also provides a side span steel beam pushing counterforce system which adopts the side span steel beam pushing counterforce device 1.
Preferably, the side span steel beam pushing counterforce device 1 acts on the top of the buttress 3 provided with the step structure 31, the step structure comprises a horizontal plane and a vertical plane which are mutually and vertically connected, the first supporting leg 101 acts on the horizontal plane from the vertical direction, and the second supporting leg 102 abuts against the vertical plane from the horizontal direction.
The side span steel beam pushing counterforce device 1 is based on the structural characteristics of the first supporting leg 101 and the second supporting leg 102, and the side span steel beam pushing counterforce device 1 is only required to be directly placed above a pier top during pushing construction, so that a pier embedded part resisting horizontal shearing force is not required to be arranged, the construction process is greatly simplified, in addition, the side span steel beam pushing counterforce device 1 is not required to be fixed on the embedded part of the pier 3 during construction, the pre-installation of the embedded part during pier construction is avoided, interference damage to the pier structure is reduced during pushing construction, and the pier is not required to be repaired after construction is completed, so that the construction period is shortened.
Although a few exemplary embodiments of the present invention have been shown above, it will be appreciated by those skilled in the art that changes may be made in these exemplary embodiments without departing from the principles or spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (8)
1. The utility model provides a side span girder steel top pushes away counterforce device which characterized in that: the device comprises a pushing reaction bracket and a jack fixed on one side of the pushing reaction bracket facing the steel beam, wherein one side of the pushing reaction bracket facing away from the steel beam is provided with a first supporting leg which horizontally extends and is used for acting on the buttress vertically and a second supporting leg which vertically extends and is used for acting on the buttress horizontally; the bottom of the first supporting leg is provided with a height adjusting device; and a rigid cushion block is arranged at the bottom edge of one side of the second supporting leg, facing the steel beam.
2. The side span steel beam pushing reaction force device according to claim 1, wherein: and inclined struts are fixedly arranged between the second supporting legs and the solid cushion blocks.
3. The side span steel beam pushing reaction force device according to claim 1, wherein: the height adjusting device is a supporting block which is arranged in parallel along the direction perpendicular to the first supporting leg.
4. The side span steel beam pushing reaction force device according to claim 1, wherein: one surface of the second supporting leg, which acts on the buttress, is provided with a buffer pad.
5. The side span steel beam pushing reaction force device according to claim 1, wherein: the bottom of the second leg is flush with the buttress surface.
6. The side span steel beam pushing reaction force device according to claim 1, wherein: and stiffening ribs are arranged on the side surfaces of the first supporting leg and the second supporting leg.
7. A side span steel beam pushing counterforce system, characterized in that it adopts the side span steel beam pushing counterforce device according to any one of claims 1-6.
8. The side span steel beam pushing reaction system of claim 7 wherein: the side span steel beam pushing counterforce device acts on the top of the buttress provided with the step structure, the step structure comprises a horizontal plane and a vertical plane which are mutually and perpendicularly connected, the first supporting leg acts on the horizontal plane from the vertical direction, and the second supporting leg abuts against the vertical plane from the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811223741.0A CN109281252B (en) | 2018-10-19 | 2018-10-19 | Side span steel beam pushing counterforce device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811223741.0A CN109281252B (en) | 2018-10-19 | 2018-10-19 | Side span steel beam pushing counterforce device and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109281252A CN109281252A (en) | 2019-01-29 |
| CN109281252B true CN109281252B (en) | 2023-10-24 |
Family
ID=65177531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811223741.0A Active CN109281252B (en) | 2018-10-19 | 2018-10-19 | Side span steel beam pushing counterforce device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109281252B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266573A (en) * | 2013-06-17 | 2013-08-28 | 中铁山桥集团有限公司 | Self-anchored suspension bridge steel box girder three-slideway synchronous jacking construction method |
| CN105568866A (en) * | 2015-12-31 | 2016-05-11 | 中铁二十局集团第六工程有限公司 | Incremental launching construction method for large-span steel box girder spanning constructed road |
| CN105970830A (en) * | 2016-04-12 | 2016-09-28 | 中交第二航务工程局有限公司 | Main beam side-span closure construction method for bond beam cable-stayed bridge |
| CN205709572U (en) * | 2016-04-22 | 2016-11-23 | 中交第二航务工程局有限公司 | The main load-carrying members of adjustable of deck erection gantry |
| CN106522112A (en) * | 2016-12-30 | 2017-03-22 | 中交路桥华南工程有限公司 | Cable-stayed bridge side span beam section erecting system and method thereof |
| KR20170093743A (en) * | 2016-02-05 | 2017-08-16 | 전종환 | Beam bridge having beam support block and its construction method |
| CN209397497U (en) * | 2018-10-19 | 2019-09-17 | 中交路桥华南工程有限公司 | End bay girder steel pushing reaction apparatus and system |
-
2018
- 2018-10-19 CN CN201811223741.0A patent/CN109281252B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266573A (en) * | 2013-06-17 | 2013-08-28 | 中铁山桥集团有限公司 | Self-anchored suspension bridge steel box girder three-slideway synchronous jacking construction method |
| CN105568866A (en) * | 2015-12-31 | 2016-05-11 | 中铁二十局集团第六工程有限公司 | Incremental launching construction method for large-span steel box girder spanning constructed road |
| KR20170093743A (en) * | 2016-02-05 | 2017-08-16 | 전종환 | Beam bridge having beam support block and its construction method |
| CN105970830A (en) * | 2016-04-12 | 2016-09-28 | 中交第二航务工程局有限公司 | Main beam side-span closure construction method for bond beam cable-stayed bridge |
| CN205709572U (en) * | 2016-04-22 | 2016-11-23 | 中交第二航务工程局有限公司 | The main load-carrying members of adjustable of deck erection gantry |
| CN106522112A (en) * | 2016-12-30 | 2017-03-22 | 中交路桥华南工程有限公司 | Cable-stayed bridge side span beam section erecting system and method thereof |
| CN209397497U (en) * | 2018-10-19 | 2019-09-17 | 中交路桥华南工程有限公司 | End bay girder steel pushing reaction apparatus and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109281252A (en) | 2019-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5179804B2 (en) | Mobile suspension support | |
| CN211772901U (en) | Space abnormal shape steel case arch rib installation device | |
| CN210458973U (en) | Hydraulic jacking device with deviation correcting mechanism for bridge jacking construction | |
| CN103437300A (en) | Construction method for erecting double cantilevers for pier top steel beam without pier-side bracket | |
| CN104005338A (en) | Three-directional temporary tower and girder consolidation structure of large-span cable-stayed bridge | |
| CN103075020A (en) | Steel tray supporting force transferring system | |
| CN112252767A (en) | Translation building device and method for soft foundation | |
| CN111794127A (en) | Counter-force prepressing system and prepressing method of ultrahigh suspension casting beam 0# block support | |
| CN215052151U (en) | Temporary supporting device for bridge construction | |
| KR101897099B1 (en) | Non-lifting bridge support construction method | |
| CN111005324B (en) | Support-free suspension and locking construction method for assembled type segmental box girder | |
| CN203866711U (en) | Large span cable-stayed bridge tower beam three-way temporary consolidation structure | |
| CN109281252B (en) | Side span steel beam pushing counterforce device and system | |
| CN209907206U (en) | Auxiliary device for installing dumbbell-shaped arch ribs | |
| KR101605011B1 (en) | Repair and Reinforcement method of lower structure of bridge | |
| CN217211985U (en) | Load applying device for assembled structure | |
| CN110792042A (en) | Anti-overturning reinforcing method for rectangular single-column pier bridge | |
| CN214328579U (en) | Replacement structure for active ultra-wide beam body support | |
| CN212428009U (en) | Heavy bearing structure of super high-rise outer protective frame | |
| CN210262748U (en) | Cantilever supporting structure for steel box girder pushing construction | |
| CN111218893B (en) | Construction method for reinforcing existing line-crossing bridge by newly-added pier column bearing steel truss girder | |
| KR20040076348A (en) | Apparatus and method for pulling up and prevention of falling down of bridge beam | |
| CN210066473U (en) | Bridge seismic isolation and reduction system | |
| CN209397497U (en) | End bay girder steel pushing reaction apparatus and system | |
| CN220767688U (en) | Dual-purpose counterforce device capable of being used for fixing expansion joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |