CN113356075A - Large-tonnage bridge pushing deviation correcting device - Google Patents
Large-tonnage bridge pushing deviation correcting device Download PDFInfo
- Publication number
- CN113356075A CN113356075A CN202110726762.XA CN202110726762A CN113356075A CN 113356075 A CN113356075 A CN 113356075A CN 202110726762 A CN202110726762 A CN 202110726762A CN 113356075 A CN113356075 A CN 113356075A
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- jacking
- displacement
- bridge
- deviation
- jack
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 79
- 230000003068 static effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Classifications
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- 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
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
Abstract
The invention relates to a large-tonnage bridge pushing deviation correcting device which comprises a base, a counter-force bracket, deviation correcting jacks, a displacement box and jacking jacks, wherein a low friction resistance sliding plate is arranged in a clamping groove of the base; a counter-force bracket is arranged at one front end part of the base, a horizontal deviation rectifying jack is arranged between the counter-force bracket and the displacement box, and the counter-force bracket provides sufficient horizontal counter-force support for the horizontal deviation rectifying jack; the two sides of the base and the rear end portion of the base are provided with a displacement limiting screw and a ruler, the displacement limiting screw can adjust the internal elongation through screwing, and the elongation is accurately controlled through the ruler. The method is simple in use method and convenient and fast to operate, can be used for large-tonnage bridge incremental launching deviation correction construction with large weight, has a limiting and locking function, and provides a practical and feasible solution for deviation correction construction required after bridge deviation.
Description
Technical Field
The invention relates to a bridge incremental launching deviation correcting device, in particular to a bridge incremental launching deviation correcting device for large tonnage.
Background
The existing bridge pushing deviation correcting device mainly starts from transverse pushing deviation correcting and vertical jacking, and provides a method for solving mutual transfer of vertical force and transverse force. But the construction mode of the device can not implement the large-tonnage bridge jacking deviation rectifying construction. Therefore, great improvement needs to be made on the structural form of the deviation correcting device, and the jacking force is distributed to a plurality of jacks through the displacement boxes, so that the large-tonnage bridge is jacked; meanwhile, the upper cover of the displacement box can be closely attached to the bottom of the beam by adopting the extension heights of a plurality of jacks, and an included angle of a certain angle is allowed; the limiting component can prevent the uncontrollable state of transverse sliding during pushing deviation rectification, and effectively realizes safety protection.
Disclosure of Invention
The invention provides a large-tonnage bridge jacking deviation correcting device, which can realize jacking of a large-tonnage bridge, prevent an uncontrollable state of transverse slippage during jacking deviation correcting and effectively realize safety protection.
In order to achieve the purpose, the technical scheme of the invention is as follows: a large-tonnage bridge jacking deviation rectifying device comprises a base, a counter-force bracket, deviation rectifying jacks, a displacement box and jacking jacks, wherein a low friction sliding plate is arranged in a clamping groove of the base, the displacement box is arranged on the low friction sliding plate, a plurality of jacking jacks are arranged in the displacement box, the displacement box is of a buckle cover type structure, and a box body of the displacement box is buckled and pressed with an upper cover; a counter-force bracket is arranged at one front end part of the base, a horizontal deviation rectifying jack is arranged between the counter-force bracket and the displacement box, and the counter-force bracket provides sufficient horizontal counter-force support for the horizontal deviation rectifying jack; the base both sides and rear end set up displacement restriction screw rod and scale, displacement restriction screw rod accessible is twisted and is twisted inside elongation of adjusting to carry out accurate control to the elongation through the scale.
Furthermore, a side gap of more than 5cm is formed between the upper cover and the box body, so that the upper cover has certain movement allowance, and the upper cover is lifted to different heights by controlling 4 jacks to form a certain gradient to adapt to different gradients of the beam bottom.
Furthermore, the dynamic friction coefficient of the low-friction sliding plate is less than or equal to 0.06, and the static friction coefficient is less than or equal to 0.1.
Furthermore, the inside of the displacement box is in a 'tian' -shaped layout, and 8 jacking jacks can be placed in each small cell.
Further, the maximum jacking force of the deviation correcting jack is more than or equal to the jacking counterforce multiplied by 20 percent of the bridge.
Furthermore, the maximum jacking force of the jacking jack is not less than the jacking counterforce multiplied by 120 percent of the bridge, and the jacking jack can be used for jacking and rectifying deviation of the bridge with large self weight.
Further, the precision of the scale is +/-0.5 mm, and the elongation of the scale is accurately measured and controlled during the adjustment of the displacement limiting screw rod.
Furthermore, when the device is used, the displacement limiting screw is firstly arranged according to the deviation rectifying displacement of the bridge and is controlled by the ruler; the screws at the two sides clamp the displacement box and then release the half-thread distance, so that the displacement box can freely slide in the forward direction;
then, setting an end part displacement limiting screw rod to ensure that the distance between the displacement box and the screw rod is equal to the preset deviation correcting distance; the jacking jack is used for pressurizing and jacking, the upper cover of the displacement box is jacked to the bottom surface of the bridge to be corrected, and the bridge is jacked up and separated from the original bridge support step by step; the deviation rectifying jack gradually pressurizes to push the displacement box to move towards the end, the displacement box stops pressurizing after contacting the displacement limiting screw rod, and the displacement box together with the bridge moves to a set position.
The invention has the beneficial effects that:
the invention relates to a deviation rectifying device based on horizontal pushing of a jack. The method is simple in use method and convenient and fast to operate, can be used for large-tonnage bridge incremental launching deviation correction construction with large weight, has a limiting and locking function, and provides a practical and feasible solution for deviation correction construction required after bridge deviation.
Drawings
FIG. 1 is a front view of the structure of the large-tonnage bridge incremental launching deviation correcting device of the invention;
FIG. 2 is a top view of the structure of the large-tonnage bridge incremental launching deviation correcting device of the present invention;
in the figure: 1. a base; 2. a counter-force corbel; 3. a horizontal deviation rectifying jack; 4. a low friction drag skateboard; 5. a displacement limiting screw; 6. a scale; 7. a displacement box; 8 lifting jack.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in fig. 1 and 2, a large-tonnage bridge pushing deviation correcting device includes: the bearing part slides, power part, spacing part. And calculating the jacking supporting reaction force of the bridge according to factors such as the span, the dead weight, the load grade and the like of the bridge needing to be jacked and corrected, and determining the machining size of the correction bearing part.
The skid bearing member includes: the device comprises a base 1, a counter force bracket 2, a low friction sliding plate 4 and a displacement box 7. The power unit includes: a deviation rectifying jack 3 and a jacking jack 8. The spacing part includes: displacement limiting screw 5 and scale 6.
The low friction resistance sliding plate 4 is arranged in a clamping groove of the base 1, and the counter force bracket 2 is arranged on one side of the base 1 and connected with the 2 horizontal deviation rectifying jacks 3 to provide sufficient horizontal counter force support for the horizontal deviation rectifying jacks 3; displacement limiting screw rods 5 and a scale 6 are arranged on two sides and the end part of the base 1, the displacement limiting screw rods 5 can adjust the internal elongation through screwing, and the elongation is accurately controlled through the scale 6; the displacement box 7 is placed on the area of the low friction sliding plate 4; 4 jacking jacks are uniformly distributed in the displacement box 7. The upper cover of the displacement box 7 is buckled on the box body of the displacement box, the side gap between the upper cover and the box body is more than 5cm, the upper cover can have certain movement allowance, and the upper cover can be lifted to different heights by controlling 4 jacks to form a certain gradient, so that the displacement box is suitable for different gradients of the beam bottom.
The dynamic friction coefficient of the low-friction sliding plate in the moving bearing part is less than or equal to 0.06, and the static friction coefficient is less than or equal to 0.1. The displacement box 7 in the moving bearing part is of a buckle closure type structure, the interior of the displacement box is in a 'tian' -shaped layout, 8 jacking jacks can be placed in each small grid, and the total number of the jacking jacks is 4.
The maximum jacking force of the deviation-correcting jack 3 of the power component is more than or equal to the jacking counterforce multiplied by 20 percent of the bridge; the power component comprises jacking jacks 8, wherein the maximum jacking force of 4 jacks is more than or equal to the jacking reaction force multiplied by 120 percent of the bridge, and the power component can be used for jacking and rectifying deviation of the bridge with large self weight.
The limiting component is used for limiting the displacement of the displacement box during pushing deviation rectification, and can prevent the displacement box from sliding beyond the range of the jack when the displacement box is controlled by the jack only. The displacement limiting screw 5 in the limiting component can limit the longitudinal and transverse moving range of the displacement box 7 by screwing the extension of the adjusting screw. The scale 6 in the limiting component has the precision of +/-0.5 mm, and the elongation of the displacement limiting screw 5 is accurately measured and controlled during adjustment.
When the device is used, firstly, the displacement limiting screw 5 is arranged according to the deviation-rectifying displacement of the bridge, and is controlled by the ruler 6; the screws at the two sides clamp the displacement box and then release the half-thread distance, so that the displacement box can freely slide in the forward direction; then, setting an end part displacement limiting screw rod to ensure that the distance between the displacement box and the screw rod is equal to the preset deviation correcting distance; the jacking jack 8 is used for pressurizing and jacking, the upper cover of the displacement box 7 is jacked to the bottom surface of the bridge needing to be rectified, and the bridge is jacked up and separated from the original bridge support step by step; the deviation rectifying jack 3 gradually pressurizes to push the displacement box 7 to move towards the end part, the pressurization is stopped after the displacement box 7 is contacted with the displacement limiting screw 5, and the displacement box and the bridge move to a set position.
Claims (8)
1. The utility model provides a large-tonnage bridge top pushes away deviation correcting device, includes base, counter-force bracket, jack, displacement box, jacking jack, its characterized in that of rectifying: a low friction sliding plate is arranged in a clamping groove of the base, a displacement box is arranged on the low friction sliding plate, a plurality of jacking jacks are arranged in the displacement box, the displacement box is of a buckle cover type structure, and an upper cover is buckled and pressed on a box body of the displacement box; a counter-force bracket is arranged at one front end part of the base, a horizontal deviation rectifying jack is arranged between the counter-force bracket and the displacement box, and the counter-force bracket provides sufficient horizontal counter-force support for the horizontal deviation rectifying jack; the base both sides and rear end set up displacement restriction screw rod and scale, displacement restriction screw rod accessible is twisted and is twisted inside elongation of adjusting to carry out accurate control to the elongation through the scale.
2. The large-tonnage bridge jacking deviation correcting device of claim 1, characterized in that: the side clearance of more than 5cm is arranged between the upper cover and the box body, so that the upper cover has certain movement allowance, and the upper cover is lifted to different heights by controlling 4 jacks to form a certain gradient to adapt to different gradients of the beam bottom.
3. The large-tonnage bridge jacking deviation correcting device of claim 1, characterized in that: the dynamic friction coefficient of the low-friction sliding plate is less than or equal to 0.06, and the static friction coefficient of the low-friction sliding plate is less than or equal to 0.1.
4. The large-tonnage bridge jacking deviation correcting device of claim 1, characterized in that: the inside of the displacement box is arranged in a shape like a Chinese character tian, and 8 jacking jacks can be placed in each small lattice.
5. The large-tonnage bridge jacking deviation correcting device of claim 1, characterized in that: the maximum jacking force of the deviation correcting jack is not less than the jacking counterforce multiplied by 20 percent of the bridge.
6. The large-tonnage bridge jacking deviation correcting device of claim 1, characterized in that: the maximum jacking force of the jacking jack is not less than the jacking counterforce multiplied by 120 percent of the bridge, and the jacking jack can be used for jacking and rectifying deviation of the bridge with large dead weight.
7. The large-tonnage bridge jacking deviation correcting device of claim 1, characterized in that: the precision of the scale is +/-0.5 mm, and the elongation of the scale is accurately measured and controlled during the adjustment of the displacement limiting screw rod.
8. The large-tonnage bridge jacking deviation correcting device of claim 1, characterized in that: when the device is used, firstly, the displacement limiting screw is arranged according to the deviation rectifying displacement of the bridge, and is controlled by the ruler; the screws at the two sides clamp the displacement box and then release the half-thread distance, so that the displacement box can freely slide in the forward direction; then, setting an end part displacement limiting screw rod to ensure that the distance between the displacement box and the screw rod is equal to the preset deviation correcting distance; the jacking jack is used for pressurizing and jacking, the upper cover of the displacement box is jacked to the bottom surface of the bridge to be corrected, and the bridge is jacked up and separated from the original bridge support step by step; the deviation rectifying jack gradually pressurizes to push the displacement box to move towards the end, the displacement box stops pressurizing after contacting the displacement limiting screw rod, and the displacement box together with the bridge moves to a set position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110726762.XA CN113356075A (en) | 2021-06-29 | 2021-06-29 | Large-tonnage bridge pushing deviation correcting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110726762.XA CN113356075A (en) | 2021-06-29 | 2021-06-29 | Large-tonnage bridge pushing deviation correcting device |
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| Publication Number | Publication Date |
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| CN113356075A true CN113356075A (en) | 2021-09-07 |
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| CN202110726762.XA Pending CN113356075A (en) | 2021-06-29 | 2021-06-29 | Large-tonnage bridge pushing deviation correcting device |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809508A (en) * | 2012-07-20 | 2012-12-05 | 上海交通大学 | Load positioning device for structural test |
| CN104786301A (en) * | 2015-04-22 | 2015-07-22 | 常熟市力恒木业机械厂 | Automatic board splicing machine with swaging function |
| KR101704550B1 (en) * | 2016-08-10 | 2017-02-10 | 주식회사 에코하이텍 | lift method for upper structure of bridge by using computer and hydraulic jack including safety device |
| CN107841957A (en) * | 2017-12-25 | 2018-03-27 | 中铁二局第五工程有限公司 | A kind of large-tonnage steel box beam thrustor, pushing tow system and pushing method |
| CN109930494A (en) * | 2019-04-11 | 2019-06-25 | 中交二公局第五工程有限公司 | Suitable for the curve and in length and breadth bridge construction thrustor on slope |
| CN110593137A (en) * | 2019-09-19 | 2019-12-20 | 常州市市政建设工程有限公司 | Large-tonnage pushing device |
| CN211142852U (en) * | 2019-10-09 | 2020-07-31 | 杭州交投科技工程有限公司 | Curve bridge rectifying system |
| CN212452321U (en) * | 2020-05-12 | 2021-02-02 | 中铁上海设计院集团有限公司 | Variable-curvature vertical curve walking type pushing adjustable structure |
| CN113005912A (en) * | 2021-03-11 | 2021-06-22 | 中交二公局第五工程有限公司 | Reciprocating dragging type super-tonnage steel box girder continuous traction device and use method thereof |
-
2021
- 2021-06-29 CN CN202110726762.XA patent/CN113356075A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809508A (en) * | 2012-07-20 | 2012-12-05 | 上海交通大学 | Load positioning device for structural test |
| CN104786301A (en) * | 2015-04-22 | 2015-07-22 | 常熟市力恒木业机械厂 | Automatic board splicing machine with swaging function |
| KR101704550B1 (en) * | 2016-08-10 | 2017-02-10 | 주식회사 에코하이텍 | lift method for upper structure of bridge by using computer and hydraulic jack including safety device |
| CN107841957A (en) * | 2017-12-25 | 2018-03-27 | 中铁二局第五工程有限公司 | A kind of large-tonnage steel box beam thrustor, pushing tow system and pushing method |
| CN109930494A (en) * | 2019-04-11 | 2019-06-25 | 中交二公局第五工程有限公司 | Suitable for the curve and in length and breadth bridge construction thrustor on slope |
| CN110593137A (en) * | 2019-09-19 | 2019-12-20 | 常州市市政建设工程有限公司 | Large-tonnage pushing device |
| CN211142852U (en) * | 2019-10-09 | 2020-07-31 | 杭州交投科技工程有限公司 | Curve bridge rectifying system |
| CN212452321U (en) * | 2020-05-12 | 2021-02-02 | 中铁上海设计院集团有限公司 | Variable-curvature vertical curve walking type pushing adjustable structure |
| CN113005912A (en) * | 2021-03-11 | 2021-06-22 | 中交二公局第五工程有限公司 | Reciprocating dragging type super-tonnage steel box girder continuous traction device and use method thereof |
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Application publication date: 20210907 |