CN100465389C - Bridge heavy steel cofferdam gasbag watering method - Google Patents
Bridge heavy steel cofferdam gasbag watering method Download PDFInfo
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- CN100465389C CN100465389C CNB2007100210442A CN200710021044A CN100465389C CN 100465389 C CN100465389 C CN 100465389C CN B2007100210442 A CNB2007100210442 A CN B2007100210442A CN 200710021044 A CN200710021044 A CN 200710021044A CN 100465389 C CN100465389 C CN 100465389C
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- steel cofferdam
- gasbag
- air bag
- cofferdam
- watering method
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Abstract
The invention is a method to water gasbag of large-scale bridge steel cofferdam. Its steps are characterized in that: locate consolidation field and consolidate steel cofferdam A. Set gasbag under A and operate control device to inflate the gasbag for holding A. Water the steel cofferdam slowly controlled by the control device and adjust the pressure and position of gasbag to guarantee equispaced position and uniform stress. Cut cable to make A slide freely when its front edge having about 5m to waterside. The invention has lower requirement of field and groundsill for gravity of A can be passed to the ground uniformly while the gasbag sliding. It locates conveniently without building slide way extending into river, which has great generalization value.
Description
Technical field
What the present invention relates to is a kind of bridge heavy steel cofferdam gasbag watering method, and it is applicable at the medium-and-large-sized steel cofferdam of bridge construction after assembly unit is finished on the coast, adopts the air bag method to go to river, and it is waterborne that steel cofferdam is gone to from the bank, is convenient to haul in place.Belong to technical field of bridge construction.
Background technology
In existing bridge construction, heavy steel cofferdam generally adopts the slideway method to go to river, and requiring during construction to have suitable slideway, and this brings many inconvenience to Construction Arrangement, and when concrete construction ground is also had higher requirement, and this gives to apply and brings difficulty.
Summary of the invention
Of the present invention is to propose a kind of bridge heavy steel cofferdam gasbag watering method, its mechanism has the assembly unit place of certain descending based on the assembly unit location arrangements at steel cofferdam, under the good steel cofferdam of assembly unit, high pressure is set, control appliance by the air bag downslide, steel cofferdam is held up by air bag, controlled cunning under the deadweight effect possesses downslide entry fast behind certain kinetic energy.Adopt the air bag method to go to river, it is waterborne that steel cofferdam is gone to from the bank, also is convenient to haul in place.
Technical solution of the present invention: bridge heavy steel cofferdam gasbag watering method, the step of this method is divided into, and one, arrange the assembly unit place, at the good steel cofferdam of consolidation shed assembly unit on the ground; Two, under steel cofferdam, arrange air bag, and arrange control appliance,, hold up steel cofferdam airbag aeration; Three, under the control of control appliance, slowly transfer steel cofferdam, adjust the air pressure and the position of air bag simultaneously, make under the steel cofferdam position of each air bag uniform, stressed evenly, when the forward position of steel cofferdam apart from about the flowage line 5m and after preparation carries out, disconnected cable is by the free downslide entry of steel cofferdam.
Advantage of the present invention: the present invention is not high to site requirements, and when air bag glided, steel cofferdam reached ground by air bag equably with gravity, and therefore less demanding to ground do not need to build the slideway that stretches into the korneforos, and arrangement convenience has bigger promotional value.
Description of drawings
Accompanying drawing 1 is the general arrangement structural representation of the place of preparing for the assembly unit steel cofferdam, air bag, control appliance.
Accompanying drawing 2 is plane structure schematic diagrames of Fig. 1.
Accompanying drawing 3 is facade structures schematic diagrames of control appliance.
Accompanying drawing 4 is plane structure schematic diagrames of Fig. 3.
A among the figure is that steel cofferdam, B are bank lines, the 1st, assembly unit place, the 2nd, and air bag, the 3rd, control appliance, the 4th, earth anchor, the 5th, hoist engine, the 6th is fastened flex point, the 7th, assembly pulley.
The specific embodiment
Contrast accompanying drawing 1,2 during the bridge steel cofferdam construction, arranges assembly unit place 1 earlier, the good steel cofferdam A of assembly unit on assembly unit place 1, under steel cofferdam A, arrange air bag 2, and arrange control appliance 3, with air bag 2 inflations, hold up steel cofferdam A, under the control of control appliance 3, slowly transfer steel cofferdam A, adjust the air pressure and the position of air bag 2 simultaneously, make under the steel cofferdam position of each air bag uniform, stressed evenly, when the forward position of steel cofferdam apart from a flowage line 5m left side
After right and preparation was carried out, disconnected cable was by the free downslide entry of steel cofferdam A.
Assembly unit place 1 is to the ramp of korneforos descending, and the gradient is about 3%～6%, and after answering the gradient to strengthen near water surface place, entering in the water, the gradient in its riverbed should satisfy the draft requirement behind the water under the steel cofferdam A.
The effect of air bag 2 is with steel cofferdam A picking-up and steel cofferdam A can generally together be used by several high-pressure gasbags peculiar to vessel to front slide under the deadweight effect, winding-type 6 curtains 7 plastic structures of air bag for often having, and concrete technical data such as following table:
Carrying capacity refers to the every linear meter(lin.m.) bearing capacity after whole air bag overall length direction all is pressed into working depth.
Contrast accompanying drawing 3,4, control appliance 3 mainly is to make steel cofferdam A controlled beginning the downslide stage, is made up of earth anchor 4, hoist engine 5 and disconnected cable device, and earth anchor 4 is embedded in underground, constitute by steel bar concrete, the anchor of 100t can be provided, make under the steel cofferdam position of each air bag uniform, stressed evenly, when the forward position of steel cofferdam apart from about the flowage line 5m and after preparation carries out, Gu power, hoist engine 5 is fixed on the earth anchor, and its wire rope links to each other with the back anchor point of steel cofferdam by the disconnected cable device of assembly pulley and front end.
Claims (4)
1, a kind of bridge heavy steel cofferdam gasbag watering method is characterized in that this method step is divided into, one, arrange the good steel cofferdam of assembly unit place assembly unit (A); Two, arrange air bag down at steel cofferdam (A), and arrange control appliance; With airbag aeration, hold up steel cofferdam (A); Three, under the control of control appliance, slowly transfer steel cofferdam (A), adjust the air pressure and the position of air bag simultaneously, make under the steel cofferdam position of each air bag uniform, stressed evenly; Four, when the forward position of steel cofferdam apart from about the flowage line 5m, disconnected cable is by the free downslide entry of steel cofferdam (A).
2, a kind of bridge heavy steel cofferdam gasbag watering method according to claim 1, it is characterized in that the assembly unit place is the ramp to the korneforos descending, this gradient is 3%～6%, answering the gradient to strengthen near water surface place, after entering in the water, the gradient in its riverbed should satisfy the draft requirement behind the water under the steel cofferdam (A).
3, a kind of bridge heavy steel cofferdam gasbag watering method according to claim 1 is characterized in that air bag is together to be used by several high-pressure gasbags peculiar to vessel.
4, a kind of bridge heavy steel cofferdam gasbag watering method according to claim 1, it is characterized in that control appliance makes steel cofferdam (A) controlled beginning the downslide stage, form by earth anchor, hoist engine and disconnected cable device, hoist engine is fixed on the earth anchor, and its wire rope links to each other with the back anchor point of steel cofferdam by the disconnected cable device of assembly pulley and front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100210442A CN100465389C (en) | 2007-03-23 | 2007-03-23 | Bridge heavy steel cofferdam gasbag watering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100210442A CN100465389C (en) | 2007-03-23 | 2007-03-23 | Bridge heavy steel cofferdam gasbag watering method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101033606A CN101033606A (en) | 2007-09-12 |
| CN100465389C true CN100465389C (en) | 2009-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100210442A Active CN100465389C (en) | 2007-03-23 | 2007-03-23 | Bridge heavy steel cofferdam gasbag watering method |
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| CN (1) | CN100465389C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775811A (en) * | 2010-03-22 | 2010-07-14 | 中交二公局第五工程有限公司 | Air-bag launching method of large steel overhead bin and cofferdam |
| CN101838994B (en) * | 2010-05-20 | 2012-05-30 | 中铁六局集团有限公司 | Construction method of steel sheet pile cofferdam for integral type steel purlin |
| CN102182149B (en) * | 2011-04-06 | 2012-11-28 | 中铁大桥局集团有限公司 | Method for entering river of parallel edges-free cofferdam with air bags |
| CN104790418B (en) * | 2015-04-29 | 2016-09-14 | 武汉理工大学 | Water Process Design Method under steel cofferdam or box |
| CN104947695A (en) * | 2015-05-19 | 2015-09-30 | 中铁大桥局集团有限公司 | Cofferdam launching method |
| CN105780789B (en) * | 2016-03-21 | 2017-12-12 | 泰兴市东城水处理工程有限公司 | The anchoring process of steel cofferdam structure |
| CN107761568B (en) * | 2017-09-09 | 2019-09-17 | 湖南金海集团有限公司 | A kind of steel structure bridge installation method using air bag carrying |
| CN107604932A (en) * | 2017-10-16 | 2018-01-19 | 中铁大桥局集团有限公司 | The method, apparatus and totally-enclosed bracket that a kind of high narrow steel cofferdam is integrally gone to river |
| CN110939145A (en) * | 2019-11-12 | 2020-03-31 | 中国铁建大桥工程局集团有限公司 | Launching method of double-wall steel suspension box cofferdam under condition of tidal alternating current in typhoon area |
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| US4135842A (en) * | 1978-01-13 | 1979-01-23 | Brown & Root, Inc. | Method for transporting and erecting offshore towers |
| CN1272572A (en) * | 2000-04-14 | 2000-11-08 | 北京市水利工程基础处理总队 | Gravity steel frame water-tight film braced cofferdam and its construction method |
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| CN1884719A (en) * | 2006-06-08 | 2006-12-27 | 中铁大桥局股份有限公司 | High opening, low edge-foot double-wall steel-cofferdams construction process for coffer without back cover concrete |
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- 2007-03-23 CN CNB2007100210442A patent/CN100465389C/en active Active
Patent Citations (4)
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| US4135842A (en) * | 1978-01-13 | 1979-01-23 | Brown & Root, Inc. | Method for transporting and erecting offshore towers |
| CN1272572A (en) * | 2000-04-14 | 2000-11-08 | 北京市水利工程基础处理总队 | Gravity steel frame water-tight film braced cofferdam and its construction method |
| CN1763314A (en) * | 2005-05-26 | 2006-04-26 | 广东省航盛工程有限公司 | Method for moving large-scale heavy member to launch and float on water, and member mounting method |
| CN1884719A (en) * | 2006-06-08 | 2006-12-27 | 中铁大桥局股份有限公司 | High opening, low edge-foot double-wall steel-cofferdams construction process for coffer without back cover concrete |
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| 安庆长江公路大桥主3#墩钢围堰施工. 胡晓平，程春.西部探矿工程，第10期. 2005 |
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| Publication number | Publication date |
|---|---|
| CN101033606A (en) | 2007-09-12 |
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