CN109868805A - Steel pile casting formula heavy-tamping method underwater reinforced construction method - Google Patents
Steel pile casting formula heavy-tamping method underwater reinforced construction method Download PDFInfo
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- CN109868805A CN109868805A CN201910153421.0A CN201910153421A CN109868805A CN 109868805 A CN109868805 A CN 109868805A CN 201910153421 A CN201910153421 A CN 201910153421A CN 109868805 A CN109868805 A CN 109868805A
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- steel pile
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- hammer ram
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Abstract
The invention discloses steel pile casting formula heavy-tamping method underwater reinforced construction methods, comprising the following steps: (1) slings steel pile casting using lifting ship and be installed to predetermined position, after entering mud stabilization, offshore construction shipping agency is sailed to designated position and is fixed;(2) steel pile casting is got to by projected depth by pile-driving and-pulling machine;(3) water in steel pile casting is drained;(4) hammer ram is put by steel pillar top by the second crane trolley in pipe support system, inserts sand material into steel pile casting with chute;(5) release hammer ram rams Cast-in-situ Piles in Sand-filling material in cylinder;(6) steel pile casting is moved up by pile-driving and-pulling machine;(7) sand material is inserted again into steel pile casting;(8) release hammer ram is rammed;(9) step (6), (7), (8) are repeated until 1 meter far from seabed mud plane of steel pile casting bottom;(10) steel pile casting is extracted by mud face by pile-driving and-pulling machine, mobile offshore construction ship carries out next pile body construction.The underwater construction operation of heavy-tamping method can be achieved in the present invention.
Description
Technical field
The present invention relates to coastal waters and engineering fields more particularly to the cofferdam such as the construction of offshore man-made island and marine structure construction
It builds, underwater reinforcing and processing method when seabed immersed tube tunnel is laid with.
Background technique
The advantages that for heavy-tamping method since its construction equipment and construction technology are simple, speed of application is fast, at low cost is in basement process
Middle extensive use.Coastal waters and offshore man-made island construction and marine structure building course in, often need to seabed soft soil foundation into
Row processing, the underwater heavy-tamping method of tradition mostly use the method for being laid with rubble or sand bedding course on bottom silt or weak soil to carry out strong
It rams.
When traditional Pounding Method, since water resistance acts on, hammer ram kinetic energy rejection in dropping process is more, rams effect
It is impaired;Simultaneously for the Thick Layer of Silt matter soil of the common poor permeability in coastal waters mouth of the river region, pore pressure dissipation is slow, tradition
Dynamic compaction reinforced depth is limited.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide it is a kind of can preferably solve underwater strong rammer during
Water resistance problem and the limited problem of reinforcement depth, construction efficiency is high, and the low steel pile casting formula heavy-tamping method of construction cost is under water
Base reinforced construction method.
The invention discloses a kind of steel pile casting formula heavy-tamping method underwater reinforced construction methods, comprising the following steps:
(1) steel pile casting is sling using lifting ship and is installed to predetermined position, after entering mud stabilization, by offshore construction foot
To designated position, anchoring is fixed;The steel pile casting includes stack shell, and feeding port, institute are provided on the barrel in stack shell middle position
The outlet of the feeding port stated and a chute being obliquely installed is arranged;
Pipe support system is installed on the offshore construction ship, the pipe support system includes crane bridge, is mounted on
The first crane trolley on crane bridge is connected by hawser with pile-driving and-pulling machine, the second crane trolley being mounted on crane bridge
It is connected by hawser with hammer ram;The first crane trolley and the second crane trolley can move on crane bridge;
(2) steel pile casting is squeezed into seabed mud plane projected depth below, institute by pile-driving and-pulling machine setting fixed pile position
Distance of the stack shell top surface for the steel pile casting stated away from the distance of crane bridge bottom surface than seabed mud plane to projected depth is greater than 2 meters,
Distance of the center line of the feeding port away from steel pile casting bottom is greater than distance of the deck in ship structure away from projected depth;
(3) water in steel pile casting is drained, by silt displacement in steel pile casting, is formed and ram condition without water resistance;
(4) hammer ram is put by the above position of feeding port in steel pillar by the second crane trolley in pipe support system, passed through
Conveyer belt on offshore construction ship conveys sand material to chute, and sand material is sent into steel pile casting by feeding port and inserts sand material into cylinder;
(5) release hammer ram rams Cast-in-situ Piles in Sand-filling material in cylinder, and guarantees that hammer ram is connect always with hawser;
(6) steel pile casting is moved up by pile-driving and-pulling machine;
(7) step (4) are repeated and inserts sand material again into steel pile casting;
(8) release hammer ram is rammed, and guarantees that hammer ram is connect always with hawser;
(9) step (6), (7), (8) are repeated until 1 meter far from seabed mud plane of steel pile casting bottom;
(10) steel pile casting is extracted by mud face by pile-driving and-pulling machine, mobile offshore construction ship carries out next pile body construction.
Compared with prior art, present invention has the advantage that
Anhydrous operation in cylinder may be implemented in this method under the protection of steel pile casting, plays the gravity of hammer ram, and protecting
It can guarantee to ram the verticality and stability of weight under the protection of cylinder.Improve the underwater construction efficiency of heavy tamping replacement method.This
Outside, steel pile casting can be inserted into soil deep, ram range since casing bottom, and sinking steel protecting canister depth determines that foundation stabilization is deep
Degree, so reinforcement depth is not limited by traditional heavy-tamping method.In addition, steel pile casting can reuse.In short, the present invention can be preferable
Ground solves the problems, such as water resistance during underwater strong rammer and the limited problem of reinforcement depth, and construction efficiency is high, and construction cost is low, tool
There are very high engineering significance and application prospect.
Detailed description of the invention
Fig. 1 is steel pile casting formula heavy-tamping method underwater reinforced construction method schematic diagram of the invention;
Fig. 2 is the structural schematic diagram of pipe support system shown in FIG. 1;
Fig. 3 is the steel pile casting structure shown in FIG. 1 with feeding port;
Fig. 4 is the structural schematic diagram of hammer ram shown in FIG. 1;
Fig. 5 is steel pile casting formula heavy-tamping method underwater reinforced construction method flow diagram.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawings and detailed description.
As shown in the picture, the invention discloses steel pile casting formula heavy-tamping method underwater reinforced construction methods, including following step
It is rapid:
(1) steel pile casting 3 is sling using lifting ship and is installed to predetermined position, after entering mud stabilization, by 1 row of offshore construction ship
Designated position is sailed to, anchoring is fixed.The steel pile casting structure is as shown in figure 3, include stack shell 31, in 31 middle position of stack shell
Feeding port 33, the outlet setting for the chute 32 that the feeding port 33 and one are obliquely installed are provided on barrel;
Pipe support system 2 is installed on the offshore construction ship 1, the pipe support system 2 includes crane bridge 21, peace
The first crane trolley 22 on crane bridge 21 is connected by hawser with pile-driving and-pulling machine 24, is mounted on crane bridge 21
Second crane trolley 23 is connected by hawser 41 with hammer ram 4;The first crane trolley and the second crane trolley is in crane bridge
It can be moved on frame 21, the first crane trolley and the second crane trolley are connect using existing track with crane bridge 21
Structure.Move back and forth to control to beat respectively on crane bridge 21 by the first crane trolley 22, the second crane trolley 23 and pull out
The position of stake machine 23 and hammer ram 4.
(2) steel pile casting 3 is squeezed into seabed mud plane projected depth below by pile-driving and-pulling machine 23 setting fixed pile position,
Distance of the stack shell top surface of the steel pile casting away from 21 bottom surface of crane bridge is greater than 2 than the distance of seabed mud plane to projected depth
Rice.Distance of the center line of the feeding port 33 away from 3 bottom of steel pile casting is greater than distance of the deck in ship structure away from projected depth.
Squeeze into sea bottom surface depth need to according to practical soil layer situation determine, guarantee steel pile casting 3 have enough stability and
Seawater cannot flow into inside casing from bottom.See step in Fig. 5 1.;
(3) water in steel pile casting 3 is drained, by silt displacement in steel pile casting 3, is formed and ram condition without water resistance.See Fig. 5
In step 2.;
(4) hammer ram is put into steel pillar 3 with upper by feeding port 33 by the second crane trolley 23 in pipe support system 2
It sets and (retains the steel pile casting of a segment length on 33 top of feeding port, do not allow when hammer ram moves up beyond casing top.It is rammed to increase
Can, hammer ram position in cylinder can be moderately improved, to guarantee not influence filler, while ensuring that hammer ram does not fall out casing), pass through
Conveyer belt on offshore construction ship 1 conveys sand material to chute 32, and sand material is sent into steel pile casting 3 by feeding port 33 and inserts sand into cylinder
3. material is shown in step in Fig. 4;After the preferred hammer ram 4 uses streamline set hammer body 42 primarily to preventing hammer ram from hammering,
Deviate from casing, casing bottom edge is blocked during pulling back.
(5) release hammer ram rams Cast-in-situ Piles in Sand-filling material in cylinder, and guarantees that hammer ram 4 is connect always with hawser, sees in Fig. 5
Step is 4.;
(6) steel pile casting 3 is moved up by pile-driving and-pulling machine 23, sees step in Fig. 5 5.;
(7) step (4) are repeated and inserts sand material again into steel pile casting 3, see step in Fig. 5 6.;
(8) release hammer ram is rammed, and guarantees that hammer ram 4 is connect always with hawser, sees step in Fig. 5 7.;
(9) step (6), (7), (8) are repeated until 1 meter far from seabed mud plane of steel pile casting bottom;
(10) steel pile casting is extracted by mud face by pile-driving and-pulling machine 23, mobile offshore construction ship carries out next pile body construction.
Claims (2)
1. steel pile casting formula heavy-tamping method underwater reinforced construction method, it is characterised in that the following steps are included:
(1) steel pile casting is sling using lifting ship and is installed to predetermined position, after entering mud stabilization, offshore construction shipping agency is sailed into finger
Positioning is set, and anchoring is fixed;The steel pile casting includes stack shell, and feeding port is provided on the barrel in stack shell middle position, described
The outlet of feeding port and a chute being obliquely installed is arranged;
Pipe support system is installed on the offshore construction ship, the pipe support system includes crane bridge, is mounted on crane
The first crane trolley on gantry is connected by hawser with pile-driving and-pulling machine, and the second crane trolley being mounted on crane bridge passes through
Hawser is connected with hammer ram;The first crane trolley and the second crane trolley can move on crane bridge;
(2) steel pile casting is squeezed into seabed mud plane projected depth below by pile-driving and-pulling machine setting fixed pile position, it is described
Distance of the stack shell top surface of steel pile casting away from the distance of crane bridge bottom surface than seabed mud plane to projected depth is described greater than 2 meters
Feeding port center line away from the distance of steel pile casting bottom be greater than distance of the deck in ship structure away from projected depth;
(3) water in steel pile casting is drained, by silt displacement in steel pile casting, is formed and ram condition without water resistance;
(4) hammer ram is put by the above position of feeding port in steel pillar by the second crane trolley in pipe support system, passes through sea
Conveyer belt on workboat conveys sand material to chute, and sand material is sent into steel pile casting by feeding port and inserts sand material into cylinder;
(5) release hammer ram rams Cast-in-situ Piles in Sand-filling material in cylinder, and guarantees that hammer ram is connect always with hawser;
(6) steel pile casting is moved up by pile-driving and-pulling machine;
(7) step (4) are repeated and inserts sand material again into steel pile casting;
(8) release hammer ram is rammed, and guarantees that hammer ram is connect always with hawser;
(9) step (6), (7), (8) are repeated until 1 meter far from seabed mud plane of steel pile casting bottom;
(10) steel pile casting is extracted by mud face by pile-driving and-pulling machine, mobile offshore construction ship carries out next pile body construction.
2. steel pile casting formula heavy-tamping method underwater reinforced construction method according to claim 1, it is characterised in that: described
Hammer ram uses streamline set hammer body.
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CN109281328A (en) * | 2018-11-14 | 2019-01-29 | 中国十九冶集团有限公司 | The accurate construction method of steel cofferdam guide pile |
CN110863520A (en) * | 2019-09-26 | 2020-03-06 | 中交第一公路勘察设计研究院有限公司 | Construction structure and method for reinforcing pile foundation by using pushing steel sleeve |
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CN103352472A (en) * | 2013-07-06 | 2013-10-16 | 中交路桥建设有限公司 | Construction method of deep water pile foundation without steel pile casings |
CN103397650A (en) * | 2013-08-23 | 2013-11-20 | 中交第四航务工程勘察设计院有限公司 | Large-scale steel cylinder cofferdam structure |
CN104452751A (en) * | 2014-12-12 | 2015-03-25 | 中铁十九局集团有限公司 | Secondary pouring pile forming device and pile forming method for bored piles |
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CN105088957A (en) * | 2015-07-23 | 2015-11-25 | 中铁港航局集团有限公司 | Construction method for underwater reinforced concrete composite pile of cast-in-situ support of concrete ballast box beam of cable-stayed bridge |
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CN205917727U (en) * | 2016-06-16 | 2017-02-01 | 江苏海上龙源风力发电有限公司 | Marine fan of implanted inlays rock single pile basis |
CN206015511U (en) * | 2016-06-27 | 2017-03-15 | 中铁第五勘察设计院集团有限公司 | One implant post steel pipe column |
CN105970911A (en) * | 2016-07-01 | 2016-09-28 | 王继忠 | Treatment method for large-thickness collapsible loess |
CN106759293A (en) * | 2017-01-09 | 2017-05-31 | 福州大学 | The bored concrete pile and its making construction method of a kind of use ultra-high performance concrete casing |
WO2019017625A1 (en) * | 2017-07-21 | 2019-01-24 | 김상기 | Concrete pack inserting device, method for constructing concrete block structure using same, and concrete block structure constructed thereby |
CN207512727U (en) * | 2017-09-06 | 2018-06-19 | 华电重工股份有限公司 | A kind of embedding rock single pile and its construction system |
CN108104142A (en) * | 2017-12-01 | 2018-06-01 | 苏州园林设计院有限公司 | A kind of construction method in water middle sleeve cofferdam |
CN108086326A (en) * | 2017-12-14 | 2018-05-29 | 中国水利水电第六工程局有限公司 | A kind of underwater concreting construction method and device |
CN108589748A (en) * | 2018-03-19 | 2018-09-28 | 湖南路桥建设集团有限责任公司 | A kind of method of the prefabricated installation of shallow water underwater works |
CN109281328A (en) * | 2018-11-14 | 2019-01-29 | 中国十九冶集团有限公司 | The accurate construction method of steel cofferdam guide pile |
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Application publication date: 20190611 |