CN104196026A - A method for pulling out underwater steel pipe piles for temporary projects of bridges - Google Patents
A method for pulling out underwater steel pipe piles for temporary projects of bridges Download PDFInfo
- Publication number
- CN104196026A CN104196026A CN201410228716.7A CN201410228716A CN104196026A CN 104196026 A CN104196026 A CN 104196026A CN 201410228716 A CN201410228716 A CN 201410228716A CN 104196026 A CN104196026 A CN 104196026A
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- steel pipe
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a method for pulling out underwater steel pipe piles for temporary projects of bridges. The method comprises the following steps: firstly, the model number of a vibration hammer and lifting equipment are selected through calculation, a transporting barge is prepared, and a complete set is formed and enters an operation area; then, the top of a steel pipe pile is leveled; the lifting equipment arrives at the operation area, an anchor is cast in place according to the length of a lifting arm and the operation radius, and meanwhile, the vibration hammer and the transporting barge are in place near the steel pipe pile; the vibration hammer is started to sink down the steel pipe pile, and then, the pile is pulled through vibration; after the steel pipe pile ascends, the lifting equipment directly pulls the pile until the steel pipe pile is separated from a mud surface; and finally, the steel pipe pile drops on the transporting barge, and the vibration hammer frees the pile to finish the pile pulling. In addition, a two-section pulling method is suitable for the steel pipe pile with the length more than 45 m; firstly the steel pipe pile is pulled out partially; then, the part of the steel pipe pile above a water surface is cut off; and finally, the remainder part of the steel pipe pile is pulled out. The method has the advantages of strong operability, low labor intensity, convenience for use, safety, environmental protection, quickening of construction progress and reduction of construction cost.
Description
Technical field
The present invention relates to, at (river, river) over strait bridge temporary works steel pipe pile removal method, specifically, relate to the foundation piles such as trestle, temporary wharf, drilling platform and pull out construction method with steel pipe pile.
Background technology
Construction bridge is as the interface channel of land and offshore construction platform, harbour is mainly to bear Material Transportation ship waterborne alongside, unloading equipment, drilling platform is as bored pile construction stage operation on the sea place, above-mentioned temporary works can reduce organization and administration difficulty and the construction risk that water craft construction brings, greatly improved production efficiency, obtained good economic benefits and social benefit simultaneously.
Above temporary works basis is according to different geological conditions, scour depth, foundation pile generally all adopts steel pipe pile, use pile driving barge or crane ship to coordinate vibrating hammer inserted to play, by horizontal-associate between steel pipe pile, design, set up i iron or Bailey truss structure and bridge deck above, steel pipe pile is stable in boundless sea, for good condition is created in offshore construction operation.In bridge construction in the past, most of unit in charge of construction all takes after construction completes, the method of cutting is under water processed the steel pipe pile of temporary works, this method both exerted a certain influence to construction marine environment, wasted again construction material, the diving expense of cutting is also very high under water simultaneously.
Summary of the invention
What the present invention will solve is the technical problem that existing (river, river) over strait bridge temporary works steel pipe pile dismantling operation is inconvenient, expense is high, a kind of water Bridge temporary works steel pipe pile removal method is provided, workable, safe coefficient is high, efficiency of construction is fast, with the obvious advantage.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A water Bridge temporary works steel pipe pile removal method, the length of described steel pipe pile is less than or equal to 45m, comprises the steps:
(1) by calculating, select vibrating hammer model and hanging device, and prepare transport barge, supporting marching into the arena to operating area;
(2) steel pipe pile stake top levelling, makes steel pipe pile stake top plane and steel pipe pile axis in vertical position;
(3) hanging device arrives operating area, and according to arm, long and operating radius casts anchor in placely, and vibrating hammer and transport barge are also by place near steel pipe pile simultaneously;
(4) Vibration on Start-up hammer, makes steel pipe pile sinking 5～10cm, vibration pile pulling, and steel pipe pile rises after 15～20m, and the direct pile pulling of hanging device, until steel pipe pile departs from mud face;
(5) steel pipe pile falls within on transport barge, and the stake of vibrating hammer pine, completes pile pulling.
A water Bridge temporary works steel pipe pile removal method, the length of described steel pipe pile is greater than 45m, comprises the steps:
(1) steel pipe pile is extracted to 20～25m;
(2) by steel pipe pile, the part more than the water surface is cut off;
(3) remaining part of steel pipe pile is extracted;
The Specific construction step of described step () and step (three) is as follows:
(1) by calculating, select vibrating hammer model and hanging device, and prepare transport barge, supporting marching into the arena to operating area;
(2) steel pipe pile stake top levelling, makes steel pipe pile stake top plane and steel pipe pile axis in vertical position;
(3) hanging device arrives operating area, and according to arm, long and operating radius casts anchor in placely, and vibrating hammer and transport barge are also by place near steel pipe pile simultaneously;
(4) Vibration on Start-up hammer, makes steel pipe pile sinking 5～10cm, vibration pile pulling, and steel pipe pile rises after 15～20m, and the direct pile pulling of hanging device, until steel pipe pile departs from mud face;
(5) steel pipe pile falls within on transport barge, and the stake of vibrating hammer pine, completes pile pulling.
Wherein, the diameter of described steel pipe pile is
Wherein, described steel pipe pile is coated with and is brushed with corrosion-inhibiting coating at position, mud face above Zhi Langjian district.
Wherein, described step (4) contains stiffener on described steel pipe pile stake top and described vibrating hammer clip pile place before.
The invention has the beneficial effects as follows:
(1) can save great deal of steel, be beneficial to material turnover, save temporary works and remove the time;
(2) reduce the expense that (river, river) over strait bridge temporary works is removed, raise the efficiency;
(3) reduce the impact on operation operation marine environment, safety and environmental protection;
In sum, the present invention is workable, and labour intensity is low, easy to use, and safety and environmental protection can accelerating construction progress, reduces construction cost.
Accompanying drawing explanation
Accompanying drawing is the Construction State schematic diagram of steel pipe pile removal method for water Bridge temporary works provided by the present invention.
In figure: 1, steel pipe pile; 2, vibrating hammer; 3, hanging device; 4, transport barge.
The specific embodiment
For further understanding summary of the invention of the present invention, feature and effect, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
One, the selection of vibrating hammer 2
Abroad vibrating hammer 2 pile vibrosinking theories are: by giving steel pipe pile 1 with forced vibration, propagation gives the soil layer of steel pipe pile 1 contact, to cause the change of soil physics performance, even the steel pipe pile 1 loosening generation of soil " liquefaction " around, reduce steel pipe pile 1 surrounding soil frictional resistance, thereby reach the object that sinks to or pull out steel pipe pile 1.So the selection principle of vibrating hammer 2 is: the frictional force between pile pulling power > steel pipe pile 1 pile body of vibrating hammer 2.
A, vibrating hammer 2 pile pulling power S (KN): according to the embedded depth of bridge location geologic information and steel pipe pile 1, the soil layer burying, thus can be according to formula: P=UL τ+G
P-stiction KN
U-steel pipe pile 1 girth m
The effective driven pile of L-is long
The ultimate friction capacity kpa of τ-corresponding soil layer and pile lining
The weight KN of G-steel pipe pile 1
By the experience of pile pulling in the past, after sandy soil " liquefaction ", it is original 5%～10% that frictional force is equivalent to, and it is original 15%～20% that viscous soil horizon is equivalent to, by extrapolating maximum extract force above.
B, vibration amplitude A (cm): when vibrating hammer 2 is pulled out steel pipe pile 1, the necessary amplitude that makes steel pipe pile 1 that vibration occur is greater than the native whole elastic pressures of moment of stake contact, and necessary amplitude to the hardness ratio of ground is: A≤N/125+0.3.The mark that wherein N is corresponding soil layer passes through and hits number.
C, vibrating hammer 2 eccentric moment K (N.m) and necessary gravity QB (kN): determine necessary amplitude A, just can obtain vibrating hammer 2 eccentric moments.K≥A(QB+QC)。In formula: QB is vibrating hammer 2 gravity, QC is steel pipe pile 1 gravity.
Two, the selection of hanging device 3
The principle of the selection of hanging device 3 is: the native frictional resistance of lifting power > vibrating hammer 2 gravity+pile chuck gravity+oil pipe group gravity+steel pipe pile 1 gravity+stake.
As imported from America ICE44-50 type vibrating hammer 2 gravity+pile chuck gravity+oil pipe group gravity is about 80KN, the gravity of ICE-V360 type vibrating hammer 2 gravity+pile chuck gravity+oil pipe group is about 180kN, just can calculate the required maximum lifting power of crane gear of harbour, trestle and drilling platform steel pipe pile 1.Because the above maximum extract force calculating is the frictional force of steel pipe pile 1 under static state, consider that the stake soil of steel pipe pile 1 in withdrawal process need to be multiplied by the coefficient of kinetic friction.
Three, steel pipe pile 1 is pulled out construction technology
Owing to being subject to the restriction of hanging device 3 length of boom, consider that steel pipe pile 1 falls to refuting efficiency after extracting simultaneously, the steel pipe pile 1 that length surpasses 45m should adopt minutes two to save the method for pulling out.According to the lifting power of the embedded depth of steel pipe pile 1 and hanging device 3, to determine the height (being generally 20～25m) that first segment need to be extracted, and steel pipe pile 1 is cut off more than the water surface, second section can utilize the direct pile pulling of hanging device 3, to improve pile pulling efficiency.
As shown in drawings, the Specific construction step that steel pipe pile 1 is extracted is as follows:
1., steel pipe pile 1 is pulled out preparation of construction
By good vibrating hammer 2 models of calculative determination and hanging device 3, and prepare transport barge 4, supporting marching into the arena to operating area.
2., 1 top levelling of steel pipe pile
The not levelling on request of 1 top of steel pipe pile, while causing vibrating hammer 2 clip pile, can not press from both sides flat, in vibration pile pulling process, pile pulling power and 1 native frictional force of steel pipe pile is not on same straight line, pile pulling power increases, easily break in 1 top of steel pipe pile, so must make 1 top plane of steel pipe pile and steel pipe pile 1 axis in vertical position to the levelling of 1 jacking row of steel pipe pile before pile pulling, guarantee that pile pulling power and the native frictional force of stake are on same straight line.
3., hanging device 3 casts anchor in place
Hanging device 3 arrives operating area, according to arm length and operating radius, is docked in appropriate location, casts anchor in place, and vibrating hammer 2 and transport barge 4 also should lean on steel pipe pile 1 neighbouring in place simultaneously.
4., pull out steel pipe pile 1
Vibration on Start-up hammer 2, steel pipe pile 1 sinking 5～10cm, vibration pile pulling, steel pipe pile 1 rising 15～20m, the direct pile pulling of hanging device 3, until steel pipe pile 1 departs from mud face.
5., steel pipe pile 1 falls to refuting
Steel pipe pile 1 falls within on transport barge 4, and vibrating hammer 2 pine stakes, complete pile pulling.
Points for attention
In pile pulling process, note: 1 top seriously corroded of steel pipe pile, reduced the tensile strength of steel pipe pile 1, in vibration pile pulling process, easily break in 1 top of steel pipe pile.So will take necessary anti-corrosion measure to reduce the corrosion of steel pipe pile 1 before steel pipe pile 1 pile sinking, or before steel pipe pile 1 is pulled out, stiffener be taked to weld in stake top and vibrating hammer 2 clip pile places, increase the intensity on stake top,
In vibration pile pulling process, pile pulling power increases suddenly makes the stake stressed unexpected increase in top, also easily causes steel pipe pile 1 split on top of the pile.So when pile pulling, pile pulling power must increase gradually, prevent that stake top moment is stressed excessive.During pile pulling, due to pile body existing certain hour in soil layer, it is stable that pile peripheral earth has become, so should first allow before vibrating hammer 2 promotes about pile body vibration 5min, make stake soil around occur to start again rise in vibration after " liquefaction ", be i.e. during pile pulling, should observe the principle of " first shake and pull out afterwards, pull out while shaking ".If occur that in the process of rise in vibration pile pulling power increases suddenly, also can take the method for " shake and pull out again ".When construction is pulled out motionless steel pipe pile as run into special circumstances, should stop pile pulling, analyze reason, find out countermeasure, then row pile pulling.
Safety and the protective device of vibrating hammer 2 systems, meeting autostop under following situations: pile chuck pressure reduces; Hydraulic oil in fuel tank in floor level face; Analysis of hydraulic oil overheat; Hydraulic oil filter stops up; Diesel fuel filter obstruction etc.In pile pulling process, should often to above situation, check.
According to different size steel pipe pile 1, pull out Construction practices and show, during temporary works design, should be taken into account its dismounting conveniently and reliability.In view of ICE44-50 type vibrating hammer be merely able to right
following gauge steel pile tube 1 is pulled out, although and ICE-V360 type vibrating hammer can be pulled out
above gauge steel pile tube 1, but current domestic quantity is seldom, and domestic existing vibrating hammer equipment is more unable to cope with.In bridge construction temporary works design and construction from now on, adopt and be no more than as far as possible for this reason
following gauge steel pile tube 1, preferably diameter exists
steel pipe pile 1 in scope, to facilitate it to remove the carrying out of work.
In addition.According to pulling out job site experience, show, during steel pipe pile 1 inserted to play, to its position, mud face above Zhi Langjian district, adopt oil paint coating significant; And do not carry out the steel pipe pile 1 of Lang Jian district position anticorrosive coating, when pulling out construction, often easily there is steel pipe pile 1 to pull off the accident that even cannot pull out at the following position of mud face; Even if this steel pipe pile 1 can be pulled out completely, use consequently cannot be had enough to meet the need in its position, mud face above Zhi Langjian district often seriously corroded, and this certainly will cause the significant wastage of construction circulation material.
Although by reference to the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, within these all belong to protection scope of the present invention.
Claims (5)
1. a water Bridge temporary works steel pipe pile removal method, is characterized in that, the length of described steel pipe pile is less than or equal to 45m, comprises the steps:
(1) by calculating, select vibrating hammer model and hanging device, and prepare transport barge, supporting marching into the arena to operating area;
(2) steel pipe pile stake top levelling, makes steel pipe pile stake top plane and steel pipe pile axis in vertical position;
(3) hanging device arrives operating area, and according to arm, long and operating radius casts anchor in placely, and vibrating hammer and transport barge are also by place near steel pipe pile simultaneously;
(4) Vibration on Start-up hammer, makes steel pipe pile sinking 5～10cm, vibration pile pulling, and steel pipe pile rises after 15～20m, and the direct pile pulling of hanging device, until steel pipe pile departs from mud face;
(5) steel pipe pile falls within on transport barge, and the stake of vibrating hammer pine, completes pile pulling.
2. a water Bridge temporary works steel pipe pile removal method, is characterized in that, the length of described steel pipe pile is greater than 45m, comprises the steps:
(1) steel pipe pile is extracted to 20～25m;
(2) by steel pipe pile, the part more than the water surface is cut off;
(3) remaining part of steel pipe pile is extracted;
The Specific construction step of described step () and step (three) is as follows:
(1) by calculating, select vibrating hammer model and hanging device, and prepare transport barge, supporting marching into the arena to operating area;
(2) steel pipe pile stake top levelling, makes steel pipe pile stake top plane and steel pipe pile axis in vertical position;
(3) hanging device arrives operating area, and according to arm, long and operating radius casts anchor in placely, and vibrating hammer and transport barge are also by place near steel pipe pile simultaneously;
(4) Vibration on Start-up hammer, makes steel pipe pile sinking 5～10cm, vibration pile pulling, and steel pipe pile rises after 15～20m, and the direct pile pulling of hanging device, until steel pipe pile departs from mud face;
(5) steel pipe pile falls within on transport barge, and the stake of vibrating hammer pine, completes pile pulling.
3. a kind of water Bridge temporary works steel pipe pile removal method according to claim 1 and 2, is characterized in that, the diameter of described steel pipe pile is
4. a kind of water Bridge temporary works steel pipe pile removal method according to claim 1 and 2, is characterized in that, described steel pipe pile is coated with and is brushed with corrosion-inhibiting coating at position, mud face above Zhi Langjian district.
5. a kind of water Bridge temporary works steel pipe pile removal method according to claim 1 and 2, is characterized in that, described step (4) contains stiffener on described steel pipe pile stake top and described vibrating hammer clip pile place before.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228716.7A CN104196026A (en) | 2014-05-27 | 2014-05-27 | A method for pulling out underwater steel pipe piles for temporary projects of bridges |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410228716.7A CN104196026A (en) | 2014-05-27 | 2014-05-27 | A method for pulling out underwater steel pipe piles for temporary projects of bridges |
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| CN201410228716.7A Pending CN104196026A (en) | 2014-05-27 | 2014-05-27 | A method for pulling out underwater steel pipe piles for temporary projects of bridges |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567334A (en) * | 2016-11-01 | 2017-04-19 | 湖北华舟重工应急装备股份有限公司 | Fabricated highway steel bridge rapid construction equipment and method |
| CN108867644A (en) * | 2018-08-05 | 2018-11-23 | 中建五局土木工程有限公司 | The efficient plucking device of underwater steel-pipe pile |
| CN109252521A (en) * | 2018-10-31 | 2019-01-22 | 中国冶集团有限公司 | Steel-pipe pile extracts equipment and its construction method in confined space water under girder steel |
| CN110886219A (en) * | 2019-10-31 | 2020-03-17 | 安徽省路港工程有限责任公司 | Construction method of in-water support dismantling system for cast-in-place bridge steel pipe pile |
| CN111456007A (en) * | 2020-04-22 | 2020-07-28 | 中交第二航务工程局有限公司 | Steel casing pulling-out method |
| CN113293708A (en) * | 2021-06-08 | 2021-08-24 | 张成瑞 | Method for mounting and dismounting through type steel pipe pile foundation of underwater cast-in-place beam support |
| WO2022116916A1 (en) * | 2020-12-01 | 2022-06-09 | 中交第三航务工程局有限公司 | Construction method for pulling out concrete pipe pile on water and pile pulling-out tool |
| CN115075247A (en) * | 2022-05-24 | 2022-09-20 | 保利长大工程有限公司 | Pulling-out method for steel pipe pile of cross-river channel box girder bracket |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567334A (en) * | 2016-11-01 | 2017-04-19 | 湖北华舟重工应急装备股份有限公司 | Fabricated highway steel bridge rapid construction equipment and method |
| CN108867644A (en) * | 2018-08-05 | 2018-11-23 | 中建五局土木工程有限公司 | The efficient plucking device of underwater steel-pipe pile |
| CN108867644B (en) * | 2018-08-05 | 2020-07-28 | 中建五局土木工程有限公司 | High-efficient pull out device of steel-pipe pile under water |
| CN109252521A (en) * | 2018-10-31 | 2019-01-22 | 中国冶集团有限公司 | Steel-pipe pile extracts equipment and its construction method in confined space water under girder steel |
| CN110886219A (en) * | 2019-10-31 | 2020-03-17 | 安徽省路港工程有限责任公司 | Construction method of in-water support dismantling system for cast-in-place bridge steel pipe pile |
| CN110886219B (en) * | 2019-10-31 | 2021-04-30 | 安徽省路港工程有限责任公司 | Construction method of in-water support dismantling system for cast-in-place bridge steel pipe pile |
| CN111456007A (en) * | 2020-04-22 | 2020-07-28 | 中交第二航务工程局有限公司 | Steel casing pulling-out method |
| WO2022116916A1 (en) * | 2020-12-01 | 2022-06-09 | 中交第三航务工程局有限公司 | Construction method for pulling out concrete pipe pile on water and pile pulling-out tool |
| CN113293708A (en) * | 2021-06-08 | 2021-08-24 | 张成瑞 | Method for mounting and dismounting through type steel pipe pile foundation of underwater cast-in-place beam support |
| CN115075247A (en) * | 2022-05-24 | 2022-09-20 | 保利长大工程有限公司 | Pulling-out method for steel pipe pile of cross-river channel box girder bracket |
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Application publication date: 20141210 |