CN103898909B - Naked petrographic province steel trestle pile foundation ring cutting method plants a technique - Google Patents
Naked petrographic province steel trestle pile foundation ring cutting method plants a technique Download PDFInfo
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- CN103898909B CN103898909B CN201410083928.0A CN201410083928A CN103898909B CN 103898909 B CN103898909 B CN 103898909B CN 201410083928 A CN201410083928 A CN 201410083928A CN 103898909 B CN103898909 B CN 103898909B
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Abstract
The invention discloses a kind of naked petrographic province steel trestle pile foundation ring cutting method and plant a technique, comprise the following steps: A, preparation of construction; B, hang and reinforce drilling platform; C, lay drilling tool steel pipe pile; D, carry out boring front preparation; E, start to creep into; F, complete boring.A kind of naked petrographic province steel trestle pile foundation ring cutting method of the present invention plants a technique, solve naked petrographic province trestle pile foundation cannot adopt hammering or vibration construction plant a problem, namely stake end welding alloy steel is adopted to bore the steel pipe pile of tooth, driven by abrasion drill machine on operation platform, after scar creeps into certain depth, directly inlay to be arranged on and basement rock plants a technique, this method is applicable to shallow covering and naked petrographic province territory, operation is simple, and easy to operate, construction safety is reliable.
Description
Technical field
The present invention relates to a kind of naked petrographic province steel trestle pile foundation ring cutting method and plant a technique.
Background technology
In prior art, the construction of major part steel trestle is in the thicker geology of covering layer, vibrating hammer hammering can be adopted to bury for pile foundation, reach and plant an object, thus meet design bearing capacity requirement, and for construction area seabottom geology complicated condition, majority is naked rock and shallow overburden geology, but cannot adopt hammering or vibration construction, plant this field referential experience of stake be difficult to find at naked petrographic province, technical data that can be for reference is very few, brings a lot of difficulty to construction.
Summary of the invention
The object of this invention is to provide a kind of naked petrographic province steel trestle pile foundation ring cutting method and plant a technique.
The technical scheme that the present invention is adopted for achieving the above object is: a kind of naked petrographic province steel trestle pile foundation ring cutting method plants a technique, comprises the following steps:
A, preparation of construction: make drilling platform and processing drilling tool steel pipe pile, bore tooth at drilling tool steel pipe pile bottom welding, and water channel bottom drilling tool steel pipe pile is set;
B, hang and reinforce drilling platform: drilling platform column arranges vertical column expanding device, for adjusting stem height, to adapt to seabed different terrain conditions, use crawler crane platform for lining and inner support tube on barge, cross hand fit and adjust vertical column expanding device, the laying and reinforcing of implementation platform;
C, lay drilling tool steel pipe pile: on the boring position that drilling platform is reserved, lay channel-section steel, and the center of accurate location drilling tool steel pipe pile, mark carried out by channel-section steel, drilling tool steel pipe pile is inserted into seabed scar along the guide-localization frame of drilling platform;
D, carry out boring front preparation: first make the Rotary table for drilling machine hole of rig corresponding with the center of rig steel pipe pile, re-use jack and regulate rig, alignd in a Rotary table for drilling machine hole and measurement position of putting sheep out to pasture, then motor and switchbox is connected, actuating motor drives hoist engine to mention kelly, and lay kelly, and locate drilling tool steel pipe pile in the lower floor of drilling platform with channel-section steel;
E, start to creep into: before construction, the finite element analysis of ring cutting method value stake technique need be carried out according to execution conditions, and determine into the rock degree of depth, loosen steel wire rope of windlass to make to contact with sea bed face bottom steel pipe, make the tight maintenance of wire rope to drilling rod and steel pipe have upwards put forward power, closed clutch, drive Rotary table for drilling machine by power transmission shaft, drive drilling rod to start boring;
F, complete boring: after reaching requirement advanced depth, stop creeping into and unloading kelly, use the pile cover together with steel pipe under gas welding.
In described steps A, drilling tool steel pipe pile guide-localization frame is set in the levels of drilling platform.
The support post of drilling platform adopts Telescopic vertical column system.
Drilling tool steel pipe pile is processed in described steps A, the different annulus of external diameter, internal diameter size is cut at steel pipe pile top steel plate, annulus is welded in steel pipe, a segment distance is reserved at top, mobile jib tube connector is inserted annulus inner circle in the heart and firm welding, annulus welds the steel plate strip in transverse and longitudinal both direction, steel pipe pile top cuts into the draw-in groove of multiple certain depth, steel plate strip stretches out steel pipe pile one segment distance, re-use triangular steel plate and connect mobile jib tube connector and steel plate strip and annulus as deep floor, firm welding.
Hang in described step B and reinforce drilling platform concrete grammar and be, 4 steel tube suspendings are loaded in the steel pipe of drilling platform corner, workman to rise in the catch that steel pipe jack is arranged in outside steel pipe in drilling platform lower floor with platform, on deck plate, workman uses rope and steel pipe to rotate steel pipe by frictional force, catch opening is alignd with the slotting axle sky of steel pipe, first pin is passed steel pipe jack by the catch outside steel pipe in the lower floor of platform by workman, the second pin is laid again above the first pin, measure mounting platform position ship side coordinate, by Eight characters anchor, coarse localization is refuted by the side of making, to sling platform, two pins are departed from, workman takes off the second pin simultaneously, second pin is placed in simultaneously below the first pin, crane continues lifting, promote drilling platform and interior pipe, drilling platform is hung lofting control point position and puts it into marine by rotary suspension arm, adjust above the second pin to the first pin, in regulating, the rising of pipe sinking outer tube makes drilling platform integral level, inner support steel pipe is vertical, steadily overall.
After driving drilling rod to start boring in described step e, start silt particle circulation pump, seawater is injected in steel pipe pile by drilling rod central duct by pumping sea water, flowed out by deslagging hole, bottom, bore quarrel and take looping pit out of under flow action, drive drilling rod to control steel pipe by hoist engine again to creep into, gently force down speed during perforate and creep into, at the uniform velocity creep into after completing perforate.
After creeping into scar, on driving lever, indicia height is H or the difference in height h measuring steel pipe pile top and lower floor's platform, by the change of mark point and the change of rotating disk or the difference in height h of steel pipe pile top and lower floor's platform, determine drilling footage, complete after reaching the rock degree of depth and creep into.
A kind of naked petrographic province steel trestle pile foundation ring cutting method of the present invention plants a technique, solve naked petrographic province trestle pile foundation cannot adopt hammering or vibration construction plant a problem, namely stake end welding alloy steel is adopted to bore the steel pipe pile of tooth, driven by abrasion drill machine on operation platform, after scar creeps into certain depth, directly inlay to be arranged on and basement rock plants a technique, this method is applicable to shallow covering and naked petrographic province territory, operation is simple, and easy to operate, construction safety is reliable.
Accompanying drawing explanation
Fig. 1 is the drilling platform floor map that a kind of naked petrographic province steel trestle pile foundation ring cutting method of the present invention plants a technique.
Fig. 2 is the drilling platform elevational schematic view that a kind of naked petrographic province steel trestle pile foundation ring cutting method of the present invention plants a technique.
Fig. 3 is the A place enlarged diagram one of Fig. 2.
Fig. 4 is the A place enlarged diagram two of Fig. 2.
Fig. 5 is the drilling platform location schematic diagram that a kind of naked petrographic province steel trestle pile foundation ring cutting method of the present invention plants a technique.
Fig. 6 is that a kind of naked petrographic province steel trestle pile foundation ring cutting method of the present invention is planted a technique rig and laid schematic diagram.
In figure: 1, crawler crane; 2, hoist engine; 3, power transmission shaft; 4, Rotary table for drilling machine.
Detailed description of the invention
As shown in Figures 1 to 6, naked petrographic province steel trestle pile foundation ring cutting method plants a technique, namely stake end welding YG-8 alloy steel is adopted to bore the steel pipe pile of tooth, by " water-300 type " on operation platform circle round rig drive, after scar creeps into certain depth, directly inlay to be arranged on and basement rock plants a technique, its concrete technology step is: A, preparation of construction: carry out drilling platform making, namely for ease of operation on the sea, drilling platform need be set up, drilling platform levels arranges steel pipe pile guide-localization frame, to ensure not run-off the straight in steel pipe pile drilling process, drilling platform support post adopts four Telescopic vertical column systems, to adapt to the different scar discrepancy in elevation, carry out the processing of drilling tool steel pipe pile, for φ 820mm steel pipe pile, use 1.5cm steel plate to cut into the annulus of external diameter 79.5cm internal diameter 12cm at pipe top, annulus is welded on external diameter 820mm, in the steel pipe of wall thickness 10mm, 2cm is reserved at top, mobile jib tube connector is inserted disk inner circle in the heart and firm welding, disk welds transverse and longitudinal both direction four wide steel plate strip of the thick 6cm of 1cm, steel pipe pile top cuts into the dark draw-in groove of four wide 2cm of 6cm, lath stretches out steel pipe pile 0.5cm, mobile jib tube connector and lath and disk is connected as deep floor at the thick right-angle side of use 1.5 triangular steel plate that is 15cm*7cm, all weld seams must be firmly, carry out bottom steel pipe pile, boring tooth welding, for make can to Rock penetrating bottom steel pipe, tooth need be bored at the YG-8 alloy steel of bottom welding about spacing 15cm, be evenly arranged, alloy steel bores tooth and uses brazing welding procedure, namely use copper wire as welding wire, Na2B4O710H2O is as solder flux, gas welding torch is used to add thermal weld, carry out water channel bottom steel pipe pile to arrange, bottom steel pipe pile, surrounding cuts out four V-butts, is convenient in drilling process by the timely deslagging of water circulation, B, drilling platform hangs and reinforces: drilling platform column arranges vertical column expanding device, for adjusting stem height, to adapt to seabed different terrain conditions, it is vertical column expanding device in Fig. 3 and Fig. 4, use crawler crane 1 platform for lining and inner support steel pipe on barge, vertical column expanding device is adjusted by hand fit, the laying and reinforcing of implementation platform, the steel tube suspending of four long diameter 438mm of 14m is loaded in the steel pipe of platform four angular diameter 500mm, four workmans rise to 438mm steel pipe jack in platform lower floor with platform and are arranged in the catch outside 500mm steel pipe, on deck plate, workman uses rope and steel pipe to rotate steel pipe by frictional force, catch opening is alignd with the slotting axle sky of 438mm steel pipe, diameter first pin is passed 438mm steel pipe jack by the catch outside 500mm steel pipe in the lower floor of platform by workman, diameter second pin is laid above diameter first pin, GPS is utilized to measure mounting platform position ship side coordinate, by Eight characters anchor, coarse localization is refuted by the side of making, to sling platform, second pin and the first pin are departed from, four workmans take off the second pin simultaneously, second pin is placed in simultaneously below the first pin, crane continues lifting, lifting platform and interior pipe, platform is hung lofting control point position and puts it into marine by rotary suspension arm, above adjustment the second to the first, in regulating, the rising of pipe sinking outer tube makes platform and integrally level, inner support steel pipe is vertical, steadily overall, C, lay drilling tool steel pipe pile: on platform reserved boring position, lay channel-section steel use the accurate positioning steel tube pile center of GPS, and carry out mark on channel-section steel, steel pipe pile is inserted into seabed scar along drilling platform guide-localization frame, D, carry out boring front preparation: tentatively make Rotary table for drilling machine hole corresponding with Design of Steel-tube Piles center, re-use 5T jack and regulate rig, alignd with surveying and locating point position in Rotary table for drilling machine hole, connect motor and switchbox, actuating motor drives hoist engine 2 to mention kelly, lays kelly, uses channel-section steel to become intersecting parallels location steel pile tube in the lower floor of platform, channel-section steel and locating rack use the bolton at adjustable seat, are welded on locating rack for strengthening firmly can putting, E, start to creep into: need carry out planting a technique finite element analysis based on the ring cutting method of ANSYS according to execution conditions before construction, determine that into the rock degree of depth be 1.5 times of stake footpaths, loosen hoist engine 2 wire rope to make to contact with sea bed face bottom steel pipe, and wire rope tighten keep to drilling rod and steel pipe have upwards put forward power, closed clutch, Rotary table for drilling machine 4 is driven by power transmission shaft 3, drilling rod is driven to start boring, start silt particle circulation pump, seawater is injected in steel pipe pile by drilling rod central duct by pumping sea water, flowed out by deslagging hole, bottom, bore quarrel and take looping pit out of under flow action, drilling rod is driven to control steel pipe drilling footage by hoist engine 2, gently force down speed during perforate to creep into, at the uniform velocity creep into after completing perforate, after creeping into scar, on driving lever, indicia height is H, also the difference in height h of steel pipe pile top and lower floor's platform can be measured, by the change of mark point and the change of rotating disk or the difference in height h of steel pipe pile and lower floor's platform, determine drilling footage, creep into when embedding rock 1.5 times of stake footpaths complete, F, complete boring: after reaching requirement advanced depth, stop creeping into and unloading kelly, be about 20cm pile cover highly together with steel pipe under using gas welding, wherein, hoist engine, power transmission shaft and Rotary table for drilling machine form convolution rig, naked petrographic province steel trestle pile foundation ring cutting method of the present invention plants a technique, solve naked petrographic province trestle pile foundation cannot adopt hammering or vibration construction plant a problem, this method is applicable to shallow covering and naked petrographic province territory, and operation is simple, easy to operate, construction safety is reliable.
Claims (5)
1. naked petrographic province steel trestle pile foundation ring cutting method plants a technique, it is characterized in that: comprise the following steps:
A, preparation of construction: make drilling platform and processing drilling tool steel pipe pile, tooth is bored at drilling tool steel pipe pile bottom welding, and water channel bottom drilling tool steel pipe pile is set, described processing drilling tool steel pipe pile, at steel pipe pile top, steel plate is cut into external diameter, the annulus that internal diameter size is different, annulus is welded in steel pipe, steel pipe top reserves a segment distance, mobile jib tube connector is inserted annulus inner circle in the heart and firm welding, annulus welds the steel plate strip in transverse and longitudinal both direction, steel pipe pile top cuts into the draw-in groove of multiple certain depth, steel plate strip stretches out steel pipe pile one segment distance, re-use triangular steel plate and connect mobile jib tube connector and steel plate strip and annulus as deep floor, firm welding,
B, hang and reinforce drilling platform: drilling platform column arranges vertical column expanding device, for adjusting stem height, to adapt to seabed different terrain conditions, use crawler crane platform for lining and inner support tube on barge, vertical column expanding device is adjusted, the laying and reinforcing of implementation platform by hand fit;
C, lay drilling tool steel pipe pile: on the boring position that drilling platform is reserved, lay channel-section steel, and the center of accurate location drilling tool steel pipe pile, mark carried out by channel-section steel, drilling tool steel pipe pile is inserted into seabed scar along the guide-localization frame of drilling platform;
D, carry out boring front preparation: first make the Rotary table for drilling machine hole of rig corresponding with the center of rig steel pipe pile, re-use jack and regulate rig, alignd in a Rotary table for drilling machine hole and measurement position of putting sheep out to pasture, then motor and switchbox is connected, actuating motor drives hoist engine to mention kelly, and lay kelly, and locate drilling tool steel pipe pile in the lower floor of drilling platform with channel-section steel;
E, start to creep into: before construction, the finite element analysis of ring cutting method value stake technique need be carried out according to execution conditions, and determine into the rock degree of depth, loosen steel wire rope of windlass to make to contact with sea bed face bottom steel pipe, make the tight maintenance of wire rope to drilling rod and steel pipe have upwards put forward power, closed clutch, drive Rotary table for drilling machine by power transmission shaft, drive drilling rod to start boring;
F, complete boring: after reaching requirement advanced depth, stop creeping into and unloading kelly, use the pile cover together with steel pipe under gas welding.
2. one according to claim 1 naked petrographic province steel trestle pile foundation ring cutting method plants a technique, it is characterized in that: arrange drilling tool steel pipe pile guide-localization frame in the levels of drilling platform in described steps A.
3. one according to claim 1 naked petrographic province steel trestle pile foundation ring cutting method plants a technique, it is characterized in that: hang in described step B and reinforce drilling platform concrete grammar and be, 4 steel tube suspendings are loaded in the steel pipe of drilling platform corner, workman to rise in the catch that steel pipe jack is arranged in outside steel pipe in drilling platform lower floor with platform, on deck plate, workman uses rope and steel pipe to rotate steel pipe by frictional force, catch opening is alignd with the slotting axle sky of steel pipe, first pin is passed steel pipe jack by the catch outside steel pipe in the lower floor of platform by workman, the second pin is laid again above the first pin, measure mounting platform position ship side coordinate, by Eight characters anchor, coarse localization is refuted by the side of making, to sling platform, two pins are departed from, workman takes off the second pin simultaneously, second pin is placed in simultaneously below the first pin, crane continues lifting, promote drilling platform and interior pipe, drilling platform is hung lofting control point position and puts it into marine by rotary suspension arm, adjust above the second pin to the first pin, in regulating, the rising of pipe sinking outer tube makes drilling platform integral level, inner support steel pipe is vertical, steadily overall.
4. one according to claim 1 naked petrographic province steel trestle pile foundation ring cutting method plants a technique, it is characterized in that: after driving drilling rod to start boring in described step e, start silt particle circulation pump, seawater is injected in steel pipe pile by drilling rod central duct by pumping sea water, flowed out by deslagging hole, bottom, bore quarrel and take looping pit out of under flow action, then drive drilling rod control steel pipe to creep into by hoist engine, gently force down speed during perforate to creep into, at the uniform velocity creep into after completing perforate.
5. one according to claim 4 naked petrographic province steel trestle pile foundation ring cutting method plants a technique, it is characterized in that: after creeping into scar, on driving lever, indicia height is H or the difference in height h measuring steel pipe pile top and lower floor's platform, by the change of mark point and the change of rotating disk or the difference in height h of steel pipe pile top and lower floor's platform, determine drilling footage, complete after reaching the rock degree of depth and creep into.
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| CN104863151A (en) * | 2015-06-11 | 2015-08-26 | 中国铁建大桥工程局集团有限公司 | Method for sinking and positioning large-diameter steel pile casing in sea |
| CN105133506B (en) * | 2015-09-11 | 2016-09-14 | 中铁四局集团有限公司 | Steel trestle construction method and facility combining impact drill limiting pore-forming implantation with crawler crane |
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| CN106758759B (en) * | 2017-02-20 | 2018-05-01 | 中铁十九局集团第七工程有限公司 | A kind of trestle pile foundation and its anchoring process for deep water drift net riverbed |
| CN108505941B (en) * | 2018-03-07 | 2019-08-13 | 江苏龙源振华海洋工程有限公司 | A kind of offshore wind farm drill hole of drilling machine construction technology |
| CN111663538A (en) * | 2020-06-24 | 2020-09-15 | 广州市恒盛建设工程有限公司 | Construction method for deep foundation pit miniature steel pipe pile support in complex geology of clearance limited area |
| CN112030774A (en) * | 2020-09-21 | 2020-12-04 | 重庆建工第一市政工程有限责任公司 | Method for constructing U-shaped sandstone riverbed steel trestle leading hole on shoal |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004092025A (en) * | 2002-08-29 | 2004-03-25 | Daia Soil Kk | Foundation pile and construction method thereof |
| CN102286976A (en) * | 2011-06-29 | 2011-12-21 | 中铁四局集团第一工程有限公司 | Method for making pile foundation construction follow long steel pile casing construction in karst area |
| JP2012021390A (en) * | 2010-06-17 | 2012-02-02 | Eiji Harada | Method of constructing steel pipe pile foundation, and head of drilling insertion apparatus |
| CN102605781A (en) * | 2012-04-10 | 2012-07-25 | 中交二公局第三工程有限公司 | Rocky bed steel pipe pile sinking construction process |
| KR101245609B1 (en) * | 2011-04-22 | 2013-03-20 | 한국건설기술연구원 | Constructing Method of Steel Pile in Sea Ground |
-
2014
- 2014-03-10 CN CN201410083928.0A patent/CN103898909B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004092025A (en) * | 2002-08-29 | 2004-03-25 | Daia Soil Kk | Foundation pile and construction method thereof |
| JP2012021390A (en) * | 2010-06-17 | 2012-02-02 | Eiji Harada | Method of constructing steel pipe pile foundation, and head of drilling insertion apparatus |
| KR101245609B1 (en) * | 2011-04-22 | 2013-03-20 | 한국건설기술연구원 | Constructing Method of Steel Pile in Sea Ground |
| CN102286976A (en) * | 2011-06-29 | 2011-12-21 | 中铁四局集团第一工程有限公司 | Method for making pile foundation construction follow long steel pile casing construction in karst area |
| CN102605781A (en) * | 2012-04-10 | 2012-07-25 | 中交二公局第三工程有限公司 | Rocky bed steel pipe pile sinking construction process |
Non-Patent Citations (1)
| Title |
|---|
| 海上裸岩区栈桥桩基环切法植桩施工技术;袁耀东等;《建材发展导向（下）》;20130630;279-280 * |
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