CN201660901U - Large-scale steel suspending box and cofferdam gasbag launching device - Google Patents
Large-scale steel suspending box and cofferdam gasbag launching device Download PDFInfo
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- CN201660901U CN201660901U CN2010201371646U CN201020137164U CN201660901U CN 201660901 U CN201660901 U CN 201660901U CN 2010201371646 U CN2010201371646 U CN 2010201371646U CN 201020137164 U CN201020137164 U CN 201020137164U CN 201660901 U CN201660901 U CN 201660901U
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- box
- steel
- air bag
- steel box
- cofferdam
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Abstract
The utility model belongs to the field of the construction of roads and bridges, in particular to a large-scale steel suspending box and cofferdam gasbag launching device. The device is characterized by comprising a steel suspending box, a plurality of gasbags, a hoist, a pulley block and a ground anchor, wherein the steel suspending box is movably connected with a circle of gasbags along with a circle of a base board, the gasbags are arranged every 2.8m, the steel suspending box is movably connected with the ground anchor through the pulley block, and the steel suspending box is movably connected with hoist through a steel wire rope. The utility model further provides a large-scale suspending box and cofferdam gasbag launching method which can reduce the pressure of unit area, is evenly stressed, has strong adaptability to the field, is convenient for construction, and is time-saving, labor-saving, flexible, safe and reliable, and obvious in overall economic efficiency.
Description
Technical field
The utility model belongs to highway, field of bridge construction, particularly large steel suspension box, cofferdam air bag launching device, just steel box, cofferdam add man-hour in bank integral body, utilize air bag method launching method with box, the disposable entry in cofferdam, are adapted to various large scale structures.
Background technology
When bridge is constructed on the water,, require steel box, steel cofferdam at the disposable water down of bank processing for reducing the insecurity and the accelerating construction progress of over-water construction.At present the water mode generally adopts to be provided with on two, three slideways, the slideway on the bank and establishes the heavy section steel track under steel box, the steel cofferdam, utilizes water under the slideway.
Generally, steel box, steel cofferdam adopt fixed launching ways, because steel box, steel cofferdam weight are very big, make the pressure of unit area very big, in order to reduce resistance, the requirement to the place during construction is very strict, have a strong impact on construction speed, also can bring insecurity simultaneously.
Summary of the invention
The purpose of this utility model provides a kind of pressure of unit area that makes and reduces, and it is stressed even, compliance to the place is strong, is convenient to construction, its have save time, laborsaving, maneuverability, safe and reliable, the significant large steel suspension box of overall economic efficiency, cofferdam air-bag launching method.
The technical solution of the utility model is achieved in that a kind of large steel suspension box of design, cofferdam air bag launching device, it is characterized in that: comprise steel box 1, air bag 2, hoist engine 5, tackle pulley 3 and earth anchor 4, flexibly connect all air bags 2 at steel box 1 along one week of base plate, air bag 2 is arranged one by every 2.8m, and steel box 1 flexibly connects earth anchor 4 by tackle pulley 3; Steel box 1 flexibly connects by wire rope 6 and hoist engine 5.
Described steel box 1 is an enclosed construction.
Described earth anchor 4 has two covers, and bilateral symmetry is connected with steel box 1.
Specific implementation method and program:
The first step on the bank, is at first handled the ramp, and the ramp is adopted building waste or slabstone to change and tamped the crucial point reason, and the gradient is 2 ~ 6%, closes on 20 meters scopes of river side and adopts 5 ~ 6% gradients, and the concrete earth anchor of both direction is set in advance on the top, slope;
Second step, than flat position, place the steel split heads on top, ramp, adopt crane assembly unit steel box;
The 3rd step, after finishing second the step, assembly unit finishing, between the supporting-point under the steel box base plate, arrange air bag, arrange one by every 2.8m, and with the steel box by wire rope, hoist engine anchoring temporarily to earth anchor, air bag is arranged and is finished laggard row inflation;
In the 4th step, after airbag aeration to box was raised up to the 0.8m height, box broke away from the about 20cm of supporting-point, removed concrete post and steel work supporting-point under the billet, prepared to transfer;
The 5th goes on foot, and the steel box is banished slowly by back anchor hoist engine and assembly pulley and gradually moved forward to along the river, and the box front end arranges that in advance air bag has scooped out the box that rolls and come, and the spacing of 0.5～1m is arranged after air bag spacing consideration air bag is stressed each other;
In the 6th step, box is rolled into when being positioned on 6% gradient, adopts and to transfer technology fast, and earth anchor and assembly pulley are drawn the cable cable that break, and the inertia that utilization is descended to dash quickens entry naturally.
The steel box connects assembly pulley by wire rope at the concrete earth anchor of both direction, by two positions of assembly pulley by wire rope connection steel box base plate, makes the steel box keep gliding direction and downslide balance.
The order of described airbag aeration at first adopts bilateral symmetry and front and back symmetry to air bag gradation inflation, then to adjacent twice inflation of air bag timesharing.
The utility model has the advantages that: the lift force by air bag is lifted the steel box, removes the support platform of steel box bottom, and the steel box is placed on the air bag cushion, relies on the rolling of air bag to make the steel box enter the water surface under the effect of gravity and tractive force.Overcome and built the drawback that steel box, steel cofferdam ability are limited by fixed launching ways, air bag can produce moderate finite deformation under the effect of steel box weight, increased the contact area on air bag and ground, the pressure of unit area is reduced, and it is stressed even, compliance to the place is strong, is convenient to construction, its have save time, laborsaving, maneuverability, safe and reliable, advantage such as overall economic efficiency is remarkable.
Description of drawings
Fig. 1 is that the utility model is implemented diagrammatic top view;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is that the first step is shown the construction schematic diagram;
Fig. 4 showed the construction schematic diagram at second step;
Fig. 5 showed the construction schematic diagram at the 3rd step;
Fig. 6 showed the construction schematic diagram at the 4th step;
Fig. 7 showed the construction schematic diagram at the 5th step;
Fig. 8 showed the construction schematic diagram at the 6th step.
Among the figure: 1, steel box; 2, air bag; 3, tackle pulley; 4, earth anchor; 5, hoist engine; 6, wire rope.
The specific embodiment
As shown in Figure 1, comprising: steel box 1, air bag 2, hoist engine 5, tackle pulley 3 and earth anchor 4, flexibly connect all air bags 2 at steel box 1 along one week of base plate, steel box 1 is an enclosed construction.Air bag 2 is arranged one by every 2.8m, and steel box 1 flexibly connects earth anchor 4 by tackle pulley 3; Steel box 1 flexibly connects by wire rope 6 and hoist engine 5.
Steel box 1 is an enclosed construction.
Earth anchor 4 has two covers, and bilateral symmetry is connected with steel box 1.
Specific implementation method and program:
The first step on the bank, is at first handled the ramp, and the ramp is adopted building waste or slabstone to change and tamped the crucial point reason, and the gradient is 2 ~ 6%, closes on 20 meters scopes of river side and adopts 5 ~ 6% gradients, the concrete earth anchor of both direction is set in advance, as shown in Figure 3 on the top, slope;
Second step, than flat position, place the steel split heads on top, ramp, adopt crane assembly unit steel box, as shown in Figure 4;
The 3rd step, after finishing second the step, assembly unit finishing, between the supporting-point under the steel box base plate, arrange air bag, arrange one by every 2.8m, and with the steel box by wire rope, hoist engine anchoring temporarily to earth anchor, air bag arranges and finishes laggard row inflation, as shown in Figure 5;
In the 4th step, after airbag aeration to box was raised up to the 0.8m height, box broke away from the about 20cm of supporting-point, removed concrete post and steel work supporting-point under the billet, prepared to transfer, as shown in Figure 6.
The 5th goes on foot, and the steel box is banished slowly by back anchor hoist engine and assembly pulley 3 and gradually moved forward to along the river, and the box front end arranges that in advance air bag has scooped out the box that rolls and come, the spacing of 0.5～1m is arranged each other, as shown in Figure 7 after air bag spacing consideration air bag is stressed;
In the 6th step, box is rolled into when being positioned on 6% gradient, and this moment, sliding force increased, and for preventing that water process rear end is stranded under the box, adopts and transfers technology fast, will the back anchor draws the cable cable that break, and the inertia that dashes under utilizing quickens entry naturally, as shown in Figure 8.
Fig. 1, Fig. 2 go on foot the schematic diagram that preparation is transferred and transferred through the first step and the 4th, and steel box 1 integral body is placed on the air bag 2, and air bag 2 is arranged between the supporting-point under steel box 1 base plate, arranges one by every 2.8m.Steel box 1 is connected with hoist engine on the one hand by wire rope, and earth anchor 4 has two covers, is connected with steel box 1 by assembly pulley 3 in the both direction bilateral symmetry simultaneously.By two positions of assembly pulley 3, make steel box 1 keep gliding direction and downslide balance by wire rope connection steel box 1 base plate.
The order of the utility model airbag aeration is answered symmetry, is disperseed inflation, as at first adopting bilateral symmetry and front and back symmetry to air bag gradation inflation, then to adjacent twice inflation of air bag timesharing.
Above steel box, steel cofferdam more than 1000 tons, the structure that weight is heavier especially is suitable for water under this method to the utility model for weight, needs abundant on-site consolidation and the following water execution conditions investigated before the construction.Steel box 1 is for needing the works of water down in the utility model.Air bag 2 conducts are the main supporting part of water down, and tackle pulley 3 flexibly connects steel box and earth anchor 4.
The utility model has made full use of bigger bearing capacity (single about 300 tons of the load of bearing), compatibility of deformation ability and the quick roll capability of air bag.
In the utility model, steel box air bag launching is after the assembly unit of steel box is finished, and utilizes the lift force of air bag that the steel box is lifted, and removes the support platform of steel box bottom, the steel box is placed on the air bag cushion, gravity and tractive force and rely on the rolling of air bag to make the steel box enter the water surface under the effect.The operating principle of its operating principle and cylinder carrying heavy goods is basic identical, promptly clocklike prop up several air bags of pad between bottom and the ground, by external force traction air bag is rolled forward, the generation orientation relatively moves between steel box and the ground thereby make, and arrives the purpose that the steel box moves down water.
Claims (3)
1. a large steel suspension box, cofferdam air bag launching device, it is characterized in that: comprise steel box (1), air bag (2), hoist engine (5), tackle pulley (3) and earth anchor (4), flexibly connect all air bags (2) at steel box (1) along one week of base plate, air bag (2) is arranged one by every 2.8m, and steel box (1) flexibly connects earth anchor (4) by tackle pulley (3); Steel box (1) flexibly connects by wire rope (6) and hoist engine (5).
2. a kind of large steel suspension box according to claim 1, cofferdam air bag launching device is characterized in that: described steel box (1) is an enclosed construction.
3. a kind of large steel suspension box according to claim 1, cofferdam air bag launching device is characterized in that: described earth anchor (4) has two covers, and bilateral symmetry is connected with steel box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201371646U CN201660901U (en) | 2010-03-22 | 2010-03-22 | Large-scale steel suspending box and cofferdam gasbag launching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201371646U CN201660901U (en) | 2010-03-22 | 2010-03-22 | Large-scale steel suspending box and cofferdam gasbag launching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201660901U true CN201660901U (en) | 2010-12-01 |
Family
ID=43231318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201371646U Expired - Lifetime CN201660901U (en) | 2010-03-22 | 2010-03-22 | Large-scale steel suspending box and cofferdam gasbag launching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201660901U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182149A (en) * | 2011-04-06 | 2011-09-14 | 中铁大桥局集团有限公司 | Method for entering river of parallel edges-free cofferdam with air bags |
| CN102852152A (en) * | 2012-09-29 | 2013-01-02 | 中铁八局集团第一工程有限公司 | Launching construction method of steel cofferdam suitable for shallow water area |
| CN103410093A (en) * | 2013-07-03 | 2013-11-27 | 中交二公局第四工程有限公司 | Reverse dragging device for construction of dragging large-span steel braced girder |
| CN104863170A (en) * | 2015-05-13 | 2015-08-26 | 中铁大桥局集团有限公司 | Floating transportation method for large open caisson or cofferdam |
-
2010
- 2010-03-22 CN CN2010201371646U patent/CN201660901U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182149A (en) * | 2011-04-06 | 2011-09-14 | 中铁大桥局集团有限公司 | Method for entering river of parallel edges-free cofferdam with air bags |
| CN102852152A (en) * | 2012-09-29 | 2013-01-02 | 中铁八局集团第一工程有限公司 | Launching construction method of steel cofferdam suitable for shallow water area |
| CN103410093A (en) * | 2013-07-03 | 2013-11-27 | 中交二公局第四工程有限公司 | Reverse dragging device for construction of dragging large-span steel braced girder |
| CN104863170A (en) * | 2015-05-13 | 2015-08-26 | 中铁大桥局集团有限公司 | Floating transportation method for large open caisson or cofferdam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |