CN102587383B - Positioning method and device for underwater installation of prefabricated crossbeam - Google Patents
Positioning method and device for underwater installation of prefabricated crossbeam Download PDFInfo
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- CN102587383B CN102587383B CN201210063557.0A CN201210063557A CN102587383B CN 102587383 B CN102587383 B CN 102587383B CN 201210063557 A CN201210063557 A CN 201210063557A CN 102587383 B CN102587383 B CN 102587383B
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- steel pipe
- pipe pile
- prefabricated crossbeam
- bracing frame
- support frame
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Abstract
The invention discloses a positioning method and a positioning device for underwater installation of a prefabricated crossbeam. The positioning method comprises the following steps: (1) prefabricating a support frame according to the pile diameters of steel pipe piles; (2) sinking the steel pipe piles, wherein the tops of the piles break the surface of water, the bottoms of the piles are sealed for stopping water; (3) pumping and locally cleaning up the water in the steel pipe piles and measuring the bottom elevation of the support frame; (4) pouring concrete to the bottom elevation of the support frame and then chipping; (5) installing the support frame in the steel pipe piles and connecting the support frame and the steel pipe piles into a whole; (6) installing positioning stirrups in cutting positions in the steel pipe piles; (7) underwater cutting off the steel pipe piles above the positioning stirrups; (8) after cutting more than two same-elevation steel pipe piles for putting the prefabricated crossbeam, underwater installing the prefabricated crossbeam; and (9) pouring node concrete so that the steel pipe piles and the prefabricated crossbeam form a whole. An assistant positioning device for implementing the positioning method comprises a support frame. The positioning method and the positioning device of the invention realize dry-soil construction through the support frame and accurate elevation control, and meet the standard and using requirements.
Description
Technical field
The present invention relates to a kind of installation under water of prefabricated crossbeam, refer to particularly localization method and device thereof that a kind of prefabricated crossbeam is installed under water.
Background technology
Prefabricated crossbeam is installed under water and is widely used in the hydro-structure such as harbour, arine railway building.
Conventional mounting method is: steel pipe pile pile sinking, then measure the high and mark of top mark, diver under water after cutting of steel pile tube at stake top solder steel corbel.By crane barge, prefabricated crossbeam is arranged on steel pipe pile, through overcorrect and the accurate after-pouring of fixing confirmation node concrete under water.
Conventional mounting method is in steel pipe pile bearing course at pile end (as the scar changing) accurately control situation of absolute altitude, cause the crossbeam being supported on steel pipe pile to shelve absolute altitude and be difficult to prior control, so main fitting operation work all can only be under water, be subject to limitation of construction, be therefore difficult to ensure the accuracy of absolute altitude.Main cause has following two aspects:
1, after steel pipe pile pile sinking, go out a top mark high (or water surface absolute altitude at that time) by land survey and identify under water by drawing by diver under guide rod again, and the guide rod of elevation control is subject to current certainly to produce error to the impact of verticality;
2, to shelve crossbeam work be mainly that diver controls under water to cutting of steel pile tube, due to the out-of-flatness certainly of underwater operation difficulty line of cut, the mode of pushing up flat steel plate bracket by the rear steel pipe pile of Underwater Welding and cutting is more repeatedly adjusted crossbeam and is shelved absolute altitude, under muddy waters, certainly produces error with sensation operation.
The cumulative errors that the reason of two aspects produces are all because fitting operation causes under water, and the conventional mounting method absolute altitude that crossbeam is directly shelved on steel pipe pile is difficult to meet specification and instructions for use.
Summary of the invention
Object of the present invention is exactly subaqueous survey and the existing deficiency of operation control technology that will overcome conventional mounting method, and the localization method that provides a kind of prefabricated crossbeam to install under water, is shelved on the absolute altitude on steel pipe pile under water in order to accurate location prefabricated crossbeam.
Another object of the present invention is to provide the auxiliary locator of realizing this localization method.
For achieving the above object, the localization method that prefabricated crossbeam provided by the present invention is installed under water, comprises the following steps:
1) according to the stake footpath of steel pipe pile, make in advance the bracing frame that can be placed in steel pipe pile;
2) by steel pipe pile pile sinking, surfaced in the stake top of steel pipe pile, then by the bottom back cover sealing of steel pipe pile;
3) water the part of extracting out in steel pipe pile are cleaned out, and the top mark of bracing frame of locating required installation by the stake top mark high precision of the steel pipe pile that surfaces is high, calculate the end absolute altitude of the bracing frame of required installation according to the height of bracing frame;
4) concreting is to the end absolute altitude of the bracing frame of required installation, and in steel pipe pile, more than the end absolute altitude of the bracing frame of the required installation of the chipping super concrete of filling with, smooth for ensureing the installation base surface of bracing frame;
5) bracing frame is arranged on the installation base surface of chipping in steel pipe pile, makes bracing frame and steel pipe pile inwall connect into entirety;
6) before cutting of steel pile tube, spacer bars hoop is installed in steel pipe pile internal cutting position, the position of described spacer bars hoop is than the low 2～4cm of top absolute altitude of bracing frame;
7) by after the water of injection and the same absolute altitude of the outer water surface in steel pipe pile, in steel pipe pile, cut off steel pipe pile more than spacer bars hoop under water, the very useful crane barge control of stake of steel pipe pile is stable, complete along all-round internal cutting after by the cut upper end steel pipe pile of crane barge control and shift out;
8) 2 of cuttings are above for shelving after the steel pipe pile of same absolute altitude of prefabricated crossbeam, prefabricated crossbeam is installed under water, by two ends outside prefabricated crossbeam, guide rod is set and adjusts plan-position, prefabricated crossbeam is directly shelved on 2 bracing frames that have been arranged in steel pipe pile;
9) after prefabricated crossbeam plane positioning is confirmed accurately, build the segregating concrete not under water of prefabricated crossbeam and steel pipe pile connected node, make steel pipe pile and prefabricated crossbeam formation overall structure.
Preferably, the bottom of described steel pipe pile is by tremie placing concrete back cover sealing or directly utilize the concrete back cover sealing of piles set into rock.
Preferably, support frame as described above is steel work, and the height of support frame as described above is 350～450mm, and support frame as described above is arranged in steel pipe pile by auxiliary Plate Welding.Like this, the supporting leg of bracing frame is connected and is welded into entirety with auxiliary steel plate with steel pipe pile inwall, is closely knit plain concrete under supporting leg, supports prefabricated crossbeam under water with bracing frame, guarantees safe, reliable and stable.
Preferably, in described step 6), described spacer bars hoop is circular, and the external diameter of described spacer bars hoop is than the little 1cm of the internal diameter of steel pipe pile, and described spacer bars hoop and steel pipe pile weld.
The auxiliary locator of what the present invention was designed realize above-mentioned localization method, comprises bracing frame, and support frame as described above comprises supporting surface and multiple supporting leg that is arranged on supporting surface below, and the height of described multiple supporting legs equates.
Preferably, between described supporting leg, be provided with connector.
Preferably, described supporting surface is square or circular, 0.5～0.7 times of the length of described supporting surface or diameter are steel pipe pile stake footpath.
Preferably, described supporting surface is the square box being surrounded by four identical angle steel, and described supporting leg is four contour i iron.
Beneficial effect of the present invention is:
1, first drain and form dry work condition by concreting in steel pipe pile and by water, the stake top mark high precision positioning supporting frame absolute altitude that can survey by surfacing is also welded and fixed; Can not take cofferdam to form in dry anhydrous situation, utilize existing execution conditions conversion to obtain the accurate absolute altitude localization method of one " dryly anhydrous controlled ", avoid identifying the error causing under water;
2, the baseline as cutting of steel pile tube by spacer bars hoop, makes underwater operation line of cut smooth, reduces operate miss;
3, prefabricated crossbeam is directly shelved on bracing frame, in the be controlled at ± 5mm of top mark high energy of bracing frame, and the top mark of bracing frame high be the end absolute altitude that prefabricated crossbeam is shelved, thereby can make the top mark high energy of prefabricated crossbeam reach the object of specification and instructions for use, instead of in conventional method, be shelved on the bracket welding after cutting of steel pile tube under water, solve the uncontrollable accurate difficult problem of absolute altitude in the conventional method that location is installed under cross beam water;
4, support prefabricated crossbeam under water by bracing frame, guarantee safe, reliable and stablely, overcome the steel pipe pile Underwater Welding bracket difficult quality control problem in conventional method, solve the difficulty that underwater operation cannot be gone beyond, obviously improved installation accuracy and benefit.
Brief description of the drawings
Fig. 1 is that bracing frame is arranged on the structural representation in steel pipe pile.
Fig. 2 is the structural representation after steel pipe pile cutting.
Fig. 3 is the schematic diagram that prefabricated crossbeam is installed under water.
Fig. 4 is that prefabricated crossbeam is shelved on the structural representation on bracing frame.
Fig. 5 is that prefabricated crossbeam and steel pipe pile form the structural representation after entirety.
Fig. 6 is the main TV structure schematic diagram of bracing frame.
Fig. 7 is the plan structure schematic diagram of bracing frame.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Certain 5 ton arine railway engineering is positioned at one dockyard, the middle and lower reach of Yangtze River, and arine railway adopts the longitudinal inclined building berth slideway form with gate, and gradient 1:20 is divided into the section under water of 116m length and land section of 207m length, two orbit centre spacing 9m.Launching way adopts φ 1000mm steel pipe pile, and superstructure is prefabricated crossbeam and slipway beam.
Crossbeam and slipway beam member adopt scene in batches prefabricated on the bank, the heavily about 100T of single Pin crossbeam, and concrete component strength can be installed after reaching 100%, is lifted by 250T crane ship.Crossbeam, slipway beam are installed and are carried out successively toward river side from bank side.
The localization method that adopts prefabricated crossbeam provided by the invention to install under water, is arranged on prefabricated crossbeam on steel pipe pile, comprises the following steps:
1) according to the stake footpath of steel pipe pile 2, make and can be placed in supporting frame with steel structure 1 in steel pipe pile 2 in advance, the length of four angle steel of the supporting surface 1.2 of bracing frame 1 is 0.65 times of stake footpath of steel pipe pile 2, and the height of bracing frame 1 is 400mm;
2) by steel pipe pile 2 pile sinking, make the stake top of steel pipe pile 2 1.0m that surfaces, set up over-water construction platform, then by the bottom of steel pipe pile 2 by tremie placing concrete back cover sealing;
3) after concrete reaches 70% intensity, with the interior moisture pump of pump handle steel pipe pile 2, and part is cleaned out, survey crew is in the installation site of the interior mark support frame 1 of steel pipe pile 2, the top mark of bracing frame 1 of locating required installation by the stake top mark high precision of the steel pipe pile 2 that surfaces is high, calculates the end absolute altitude of the bracing frame 1 of required installation according to the height of bracing frame 1;
4) smooth for ensureing the installation base surface of bracing frame 1, concreting is to the end absolute altitude of the bracing frame 1 of required installation, treat that concrete reaches early strength, send workman to enter in steel pipe pile 2, the end absolute altitude of the bracing frame 1 of the required installation of chipping is the super concrete of filling with above;
5) bracing frame 1 is arranged on the installation base surface of steel pipe pile 2 interior chippings, the supporting leg 1.2 of bracing frame 1 is connected and is welded into entirety with auxiliary steel plate 3 with steel pipe pile 2 inwalls;
6), before cutting of steel pile tube 2, at steel pipe pile 2 internal cutting position welding spacer bars hoops 4, the position of spacer bars hoop 4 is than the low 2cm of top absolute altitude of bracing frame 1, the baseline cutting off under water as diver; Spacer bars hoop 4 used is circular, and the external diameter of spacer bars hoop 4 is than the little 1cm of the internal diameter of steel pipe pile 2, as shown in Figure 1;
7) by after the water of interior steel pipe pile 2 injection and the same absolute altitude of the outer water surface, diver slips in steel pipe pile 2, cut off more than 4 steel pipe pile 2 of spacer bars hoop under water, the very useful crane barge control of stake of steel pipe pile 2 is stable, after complete along all-round internal cutting, diver emerges, by the cut upper end steel pipe pile 2 of crane barge control and shift out, as shown in Figure 2;
8) 2 of cuttings are above for shelving after the steel pipe pile 2 of same absolute altitude of prefabricated crossbeam 5, prefabricated crossbeam 5 is installed under water, adjust plan-position by guide rod 6 being set at prefabricated crossbeam 5 two ends, outside, prefabricated crossbeam 5 is directly shelved on 2 bracing frames 1 that have been arranged in steel pipe pile 2, as shown in Figure 3,4;
9) after prefabricated crossbeam 5 plane positioning are confirmed accurately, build the segregating concrete not under water of prefabricated crossbeam 5 and steel pipe pile 2 connected nodes, make steel pipe pile 2 and prefabricated crossbeam 5 form overall structure, as shown in Figure 5.
Prefabricated crossbeam 5 employing scenes are in batches prefabricated on the bank, the heavily about 100T of single Pin prefabricated crossbeam 5, and concrete component strength can be installed after reaching 100%, is lifted by 250T crane ship.Prefabricated crossbeam 5 is installed from bank side and is carried out successively toward river side.Prefabricated crossbeam 5 is installed 4 of employings and is hung, before lifting, aboard ship first four guide rods that surface at prefabricated crossbeam 5 two ends, outside 6 and lead-in wire steel wire, limiting plate are installed, steel wire is positioned to prefabricated crossbeam 5 and designs on axis, and guide rod 6 and steel wire are adjusted to vertical with prefabricated crossbeam 5 planes.After ready, move ship to erecting bed, carry out coarse positioning by the guide rod 6 surfacing, in the time that prefabricated crossbeam 5 approaches the stake top of steel pipe pile 2, stop, in place by the total powerstation guiding of setting up on the bank.Sinking prefabricated crossbeam 5 after accurate contraposition.Prefabricated crossbeam 5 drops on bracing frame 1, needs plane adjustment.
Prefabricated crossbeam 5 enters after water, must check elevation and off normal situation, and be adjusted under water by diver, and adjusting principle is first to confirm to shelve the state of bracing frame 1 (absolute altitude and stability), rear level-off position.
Upright position: read by the level gauge being erected on the bank the scale data that are attached on guide rod 6, prefabricated crossbeam 5 top mark high energy meet the demands.
Plan-position: adopt leads method, after absolute altitude is adjusted, fall suspension hook, check the front, rear, left and right off normal situation of beam by being erected at guide rod 6 on prefabricated crossbeam 5.By the total powerstation instrument being erected on the bank, data are communicated on crane ship, carry out horizontal position adjustment.So repeatedly carry out, until be no more than allowed deviation.
Prefabricated crossbeam 5 under water node concrete bed die adopts steel work, is welded into after entirety in prefabricated crossbeam 5 open steel structures and prefabricated crossbeam 5, welds a perforate than the steel plate bed die of steel pipe pile (or steel casing) the large 40cm of diameter at aperture position.Space between bed die and steel pipe pile, adopts weld-ring plate on crane corbel to do template, before crossbeam is installed, first crane corbel ring flat-plate is lifted on steel pipe pile, and crossbeam, slipway beam are all installed and adjusted after confirmation in place accurately, carry out node concrete and build.
After having constructed for ensureing the safety of 5 ton ship launchings, outward please third party under water the unit of detection slideway is detected, plane and height variation require all can meet code requirement.Now the practical proof by 8 ship launchings feasibility, accuracy, safety and the economy of this installation and locating method under water, applicability is strong, implementation result is good.
Claims (8)
1. the localization method that prefabricated crossbeam is installed under water, comprises the following steps:
1) according to the stake footpath of steel pipe pile (2), make in advance the bracing frame (1) that can be placed in steel pipe pile (2);
2) by steel pipe pile (2) pile sinking, surfaced in the stake top of steel pipe pile (2), then by the bottom back cover sealing of steel pipe pile (2);
3) water the part of extracting out in steel pipe pile (2) are cleaned out, the top mark of bracing frame (1) of locating required installation by the stake top mark high precision of the steel pipe pile (2) that surfaces is high, calculates the end absolute altitude of the bracing frame (1) of required installation according to the height of bracing frame (1);
4) concreting is to the end absolute altitude of the bracing frame (1) of required installation, and the end absolute altitude of the bracing frame (1) of the required installation of chipping steel pipe pile (2) in is super filling concrete above, smooth to ensure the installation base surface of bracing frame (1) of required installation;
5) bracing frame (1) is arranged on the installation base surface of the interior chipping of steel pipe pile (2), makes bracing frame (1) and steel pipe pile (2) inwall connect into entirety;
6) cutting of steel pile tube (2) is front, and spacer bars hoop (4) is installed in steel pipe pile (2) internal cutting position, and the position of described spacer bars hoop (4) is than the low 2～4cm of top absolute altitude of bracing frame (1);
7) by after the water of injection and the same absolute altitude of the outer water surface in steel pipe pile (2), in steel pipe pile (2), cut off steel pipe pile (2) more than spacer bars hoop (4) under water, the very useful crane barge control of stake of steel pipe pile (2) is stable, complete along all-round internal cutting after by the cut upper end steel pipe pile (2) of crane barge control and shift out;
8) 2 of cuttings are above for shelving after the steel pipe pile (2) of same absolute altitude of prefabricated crossbeam (5), prefabricated crossbeam (5) is installed under water, adjust plan-position by guide rod (6) being set at two ends, prefabricated crossbeam (5) outside, prefabricated crossbeam (5) is directly shelved on 2 bracing frames (1) that have been arranged in steel pipe pile (2);
9) after prefabricated crossbeam (5) plane positioning is confirmed accurately, build the segregating concrete not under water of prefabricated crossbeam (5) and steel pipe pile (2) connected node, make steel pipe pile (2) and prefabricated crossbeam (5) formation overall structure.
2. the localization method that prefabricated crossbeam is installed under water according to claim 1, is characterized in that: the bottom of described steel pipe pile (2) is by tremie placing concrete back cover sealing or directly utilize the concrete back cover sealing of piles set into rock.
3. the localization method that prefabricated crossbeam is installed under water according to claim 1, it is characterized in that: support frame as described above (1) is steel work, the height of support frame as described above (1) is 350～450mm, and support frame as described above (1) is by assisting steel plate (3) welded and installed in steel pipe pile (2).
4. the localization method that prefabricated crossbeam is installed under water according to claim 1, it is characterized in that: in described step 6), described spacer bars hoop (4) is circular, the external diameter of described spacer bars hoop (4) is than the little 1cm of internal diameter of steel pipe pile (2), and described spacer bars hoop (4) welds with steel pipe pile (2).
5. realize the auxiliary locator of localization method described in claim 1 for one kind, comprise bracing frame (1), it is characterized in that: support frame as described above (1) comprises supporting surface (1.1) and multiple supporting leg (1.2) that is arranged on supporting surface (1.1) below, and the height of described multiple supporting legs (1.2) equates.
6. the auxiliary locator of localization method according to claim 5, is characterized in that: between described supporting leg (1.2), be provided with connector (1.3).
7. according to the auxiliary locator of localization method described in claim 5 or 6, it is characterized in that: described supporting surface (1.1) is for square or circular, the length of described supporting surface (1.1) or diameter are 0.5～0.7 times of stake footpath of steel pipe pile (2).
8. according to the auxiliary locator of localization method described in claim 5 or 6, it is characterized in that: the square box of described supporting surface (1.1) for being surrounded by four identical angle steel, described supporting leg (1.2) is four contour i iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210063557.0A CN102587383B (en) | 2012-03-12 | 2012-03-12 | Positioning method and device for underwater installation of prefabricated crossbeam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210063557.0A CN102587383B (en) | 2012-03-12 | 2012-03-12 | Positioning method and device for underwater installation of prefabricated crossbeam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102587383A CN102587383A (en) | 2012-07-18 |
| CN102587383B true CN102587383B (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210063557.0A Expired - Fee Related CN102587383B (en) | 2012-03-12 | 2012-03-12 | Positioning method and device for underwater installation of prefabricated crossbeam |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983222A (en) * | 2014-04-15 | 2014-08-13 | 安徽富煌钢构股份有限公司 | Super high-rise steel structure steel tubular column machining measuring device |
| CN108755728A (en) * | 2018-06-22 | 2018-11-06 | 中船第九设计研究院工程有限公司 | A method of it is connect with pile foundation for launching way beam |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0302707A1 (en) * | 1987-08-04 | 1989-02-08 | CEMENTATION PILING & FOUNDATIONS LIMTED | Method and equipment for accurately positioning items in shafts or piles |
| CN201241329Y (en) * | 2008-07-01 | 2009-05-20 | 北京住总集团有限责任公司 | Positioner of steel pipe column |
| CN101962956A (en) * | 2009-07-22 | 2011-02-02 | 中交公路规划设计院有限公司 | Bridge prefabricated foundation and bed-burying method thereof |
| CN102134854A (en) * | 2011-02-16 | 2011-07-27 | 中交二航局第四工程有限公司 | Slipway underwater pile foundation and construction method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4884117B2 (en) * | 2006-07-26 | 2012-02-29 | Ｊｆｅスチール株式会社 | Column and steel pipe pile positioning device and positioning method |
-
2012
- 2012-03-12 CN CN201210063557.0A patent/CN102587383B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0302707A1 (en) * | 1987-08-04 | 1989-02-08 | CEMENTATION PILING & FOUNDATIONS LIMTED | Method and equipment for accurately positioning items in shafts or piles |
| CN201241329Y (en) * | 2008-07-01 | 2009-05-20 | 北京住总集团有限责任公司 | Positioner of steel pipe column |
| CN101962956A (en) * | 2009-07-22 | 2011-02-02 | 中交公路规划设计院有限公司 | Bridge prefabricated foundation and bed-burying method thereof |
| CN102134854A (en) * | 2011-02-16 | 2011-07-27 | 中交二航局第四工程有限公司 | Slipway underwater pile foundation and construction method thereof |
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| CN102587383A (en) | 2012-07-18 |
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