CN105672314A - Method for constructing steel pipe upright pile through semi-reversed-construction method - Google Patents
Method for constructing steel pipe upright pile through semi-reversed-construction method Download PDFInfo
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- CN105672314A CN105672314A CN201610035772.8A CN201610035772A CN105672314A CN 105672314 A CN105672314 A CN 105672314A CN 201610035772 A CN201610035772 A CN 201610035772A CN 105672314 A CN105672314 A CN 105672314A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/06—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers for observation while placing
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
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Abstract
The invention discloses a method for constructing a steel pipe upright pile through a semi-reversed-construction method. The method includes the following steps of firstly, locating the pile position; secondly, embedding a long pile casing; thirdly, drilling the upright pile; fourthly, placing an adjusting frame; fifthly, placing a reinforcement cage; sixthly, splicing an upright pile steel pipe with a tool pipe; seventhly, placing the upright pile steel pipe and the tool pipe; eighthly, finely adjusting the upright pile steel pipe and the tool pipe; ninthly, placing a concrete pouring and tamping frame; tenthly, pouring concrete into the upright pile; and eleventhly, pulling out the tool pipe. According to the method, the independently-studied-and-created hoisting tool pipe and the whole vertical detection device are utilized, so that construction quality, the construction schedule and construction safety are guaranteed, construction cost is reduced greatly, and the method has a great significance in development of semi-reversed method construction.
Description
Technical field
The present invention relates to a kind of semi-inverse method steel pipe post pile construction method, belong to technical field of building construction.
Background technology
Along with the fast development of domestic city process, space between the building of Downtown is more and more less, construction place is narrow and small, and building and surrounding enviroment are also very responsive to sedimentation and deformation, and now a kind of " contrary sequence method " construction technique is used gradually and is tending towards ripe. In " contrary sequence method " construction, transmit upper strata horizontal support load structure, conventionally adopt the vertical support structure of a single supporting pile of support column and bottom, be called for short on " one, a post ". The conventional way of construction steel pipe stand column pile (i.e. one, a post) is all to adopt pitching pile machine, this machinery expenses costliness, and domestic mechanical limited amount, cannot meet large area volume production; And this machinery requires, and stake footpath is large, stake top mark is high to ground, and the construction period is long etc. For meeting the large-area construction of semi-inverse method steel pipe post stake, and ensure that axis location and the perpendicularity deviation of steel pipe column meet design requirement, and must develop a kind of new technology and overcome the above problems.
Summary of the invention
Goal of the invention: the object of the invention is to for the deficiencies in the prior art, a kind of semi-inverse method steel pipe post pile construction method is provided, the lifting device pipe of wound is independently ground in this construction method utilization, a whole set of device that hangs down of surveying has ensured construction quality, progress and construction safety, greatly reduce construction cost, the development of double reverse construction is significant.
Technical scheme: a kind of semi-inverse method steel pipe post pile construction method of the present invention, comprises following construction procedure:
(1) location, stake position, concrete operation is: 1.1, calculate the coordinate of each position according to design drawing, and determine the position relationship at each hole and adjacent control point; 1.2, finishing place, stake position coordinate check errorless after, utilize total powerstation on construction ground in accurate location; 1.3, taking pile center as intersection point, go out 4 fender piles and bury underground in vertical and horizontal direction pilot measurement;
(2) long casing is buried underground, and concrete operation is: 2.1, require and the needs of the stressed fulcrum of hydraulic jack vertical adjustment according to pore-forming accuracy, and the long steel casing of customization 3-5m, casing internal diameter is than the large 15-25cm of bored concrete pile external diameter,, wall thickness 10-20mm, the reserved slurry mouth that overflows of upper port; 2.2, casing is buried underground to adopt and is dug and bury, by draw 4 fender pile points of longitudinal and transverse direction of putting adjust in place, casing center and a stake position center superposition, its deviation is not more than 20mm, and should strictly control the perpendicularity of casing, error is not more than 0.2%; 2.3, casing adjust to the right place and fixed stably after, the even backfill of clay compaction in layers for periphery, do not fall and not running pulp of periphery to ensure that in boring procedure casing is stable; 2.4, after casing is buried underground, check in time stake position, if there is error to be greater than code requirement, again bury underground;
(3) stand column pile pore-forming, concrete operation is: 3.1, pile-forming machine perching, utilizes the instrument and meter for automation device of stake machine to flatten centering, bit central and stake position center superposition; Fill in single inspection simultaneously, after the agreement of rig being inspected for acceptance through supervising engineer, start boring; 3.2, drilling and forming hole, with mud in the timely complementary apertures of progress, and controls creeping into and hoisting velocity of drilling tool, strictly controls aperture, perpendicularity, hole depth and mud index well, guarantees hole quality, and carries out drilling time log; 3.3, clear hole, gets into after predetermined hole depth for the first time, and the soil clearly that dallies in former depths is carried and carried out aperture, hole deviation, sediment thickness after brill and detect, and after parameters meets design requirement, removes a machine; 3.4, after pore-forming, stake hole periphery is flattened;
(4) adjustment frame is laid, concrete operation is: 4.1, make double-deck adjustment frame by oneself as bearing, adjustment frame bottom surface is welded with steel walling crib, be convenient to lay firmly at well head, adjustment frame lower floor is welded with respectively rotating shaft and base along the each medial surface of four direction middle part, and the mechanic jacks of laying manual adjustments regulates and fixture as stand column pile steel shaft line position; 4.2, again repair place, aperture, lay adjustment frame, utilize spirit level to survey each angle point absolute altitude, adjustment frame is adjusted to level, while laying adjustment frame, should ensure between two parties, reach casing center line, adjustment frame center line and stake position center line overlapped;
(5) steel reinforcement cage is laid, and concrete operation is: 5.1, steel reinforcement cage lay before by bar bender squad leader's self-inspection, then carried out an acceptance inspection together with owner, management by Quality Inspector, and carry out acceptance of concealed work visa then and there, steel reinforcement cage by inspection must not transferred; 5.2, when steel reinforcement cage is transferred, answer center, mating holes position, adopt positive and negative rotation progressively to sink at leisure, prevent collision; 5.3, steel reinforcement cage is transferred by joint, between every joint, is welded to connect, and final section steel reinforcement cage exposes to stand column pile aperture and is temporarily fixed on adjustment frame after fixing with stand column pile steel pipe and transfers simultaneously;
(6) stand column pile steel pipe and tool pipe splicing, concrete operation is: 6.1, the bottom of tool pipe is provided with socket joint steel pipe, wherein socket joint steel pipe length is not less than 1.2m, internal diameter is greater than the external diameter 6-8mm of corresponding stand column pile steel pipe, and end opening is made groove, and necessary grinding process is carried out in groove inner side and stand column pile steel pipe upper port outside, guarantee that stand column pile steel pipe is connected with tool pipe, can prevent from again that concrete grout from entering the gap between two pipes and affecting tool pipe after a while to pull out; The axis of whole piece tool pipe must be point-blank; 6.2, stand column pile steel pipe and tool pipe carry out socket joint on processing space operating platform, the stop position of concrete socket joint length and stand column pile steel pipe is determined according to aperture absolute altitude, stand column pile top mark height by job site, adopt iron wedge to regulate at two steel pipe interfaces simultaneously, ensure the axis of stand column pile steel pipe and tool pipe point-blank; 6.3, for guaranteeing perpendicularity and absolute altitude control, make a steel shoulder pole and tool pipe top is rigidly connected with channel-section steel, the flatness of channel-section steel shoulder pole above and below needs to adjust, and guarantees that the horizontal plane of shoulder pole is vertical with tool pipe axis after connection; 6.4, draw a control line parallel with axis in the outside of tool pipe, centered by control line, in conjunction with the size of inclinometer pipe, weld the 2 spacing lines in road with the round steel of φ 8, between the 2 spacing lines in road, fix inclinometer pipe, in order to detect and to regulate two tubular axis lines; 6.5, below channel-section steel shoulder pole, be close to tool pipe and be symmetrically welded the tension rib of adjustable 4 flower basket bolts in order to temporary fixed connection column steel pipe and tool pipe; 6.6, the slurry mouthful that overflows is set on tool pipe, this slurry mouth that overflows is positioned at bell-and-spigot pipe top;
(7) stand column pile steel pipe and tool pipe are laid, and concrete operation is: 7.1, and adopt crawler crane unit to lift stand column pile steel pipe and tool pipe, and Hui Zhi aloft; 7.2, after lifting, make steel pipe and tool pipe be Vertical Free state, enter steel reinforcement cage center and slowly transfer, insert well head steel reinforcement cage; 7.3, hang stand column pile steel pipe and tool pipe to relevant position, at stand column pile outer wall of steel pipe welding hanger, and steel reinforcement cage is hung on hanger, guarantee that the effective length that stand column pile steel pipe enters steel reinforcement cage meets design; 7.4, transfer stand column pile steel pipe, tool pipe and steel reinforcement cage to designed elevation; 7.5, turn to, manually coordinate and the axial location of the adjustment frame jack pair tool pipe of well head regulates centering by suspension hook, in process, check with total powerstation, guarantee that Yu Zhuanwei center, tool pipe center is consistent, and tool pipe channel-section steel shoulder pole is carried out to repetition measurement with spirit level and horizontal guiding ruler, ensure four angle levels of channel-section steel shoulder pole, more spacing fixing with the jack on adjustment frame;
(8) stand column pile steel pipe and tool pipe fine setting, concrete operation is: 8.1, inclinometer is transferred by inclinometer pipe, measure the gradient of tool pipe; 8.2, determine and adjust direction according to the data that record, turn to, manually coordinate and the axial location of the adjustment frame jack pair tool pipe of well head regulates centering by suspension hook, in process, check with total powerstation, guarantee that Yu Zhuanwei center, tool pipe center is consistent, and tool pipe channel-section steel shoulder pole is carried out to repetition measurement with spirit level and horizontal guiding ruler, ensure four angle levels of channel-section steel shoulder pole, spacing fixing by the mechanic jacks on adjustment frame again, setting tool pipe position of upper;
(9) casting and compacting of concrete frame is laid, concrete operation is: 9.1, because the adjustment frame that regulates horizontal level and perpendicularity has been laid in aperture, for fear of the adjusted good steel pipe post stake of concreting impact, the another casting and compacting of concrete frame of making, water and smash top of support and leave watering of a footpath size and smash mouth, in order to catheter placement; 9.2, lay casting and compacting of concrete frame, avoid touching adjustment frame and tool pipe, and guarantee to water and smash frame and lay steadily;
(10) stand column pile filling concrete, for ensureing that steel pipe column inner concrete does not plan a successor and interlayer, adopt conduit to transfer to engineering pile steel reinforcement cage bottom by steel pipe column center, together pour into engineering pile body underwater concrete, the continuity of pouring into by underwater concrete, ensure the construction quality of steel pipe column inner concrete, and surpass filling according to design and code requirement; Concrete operation is: 10.1, and conduit must carry out waterproof test before using, and inspection conduit sealing property can be used after qualified; 10.2, smash opening's edge and in tool pipe catheter placement and carry out clear hole for the second time from watering, transfer in catheter procedure and want careful operation, prevent that conduit is to steel pipe tool pipe sharp impacts; Change slurry clear hole to the index such as mud balance, sediment thickness and meet code requirement, the bucket that reloads is prepared underwater concrete perfusion; 10.3, before filling concrete, make a report on to build and report table to a higher authorities for approval, in filling process, conduit should be all the time in concrete, forbid conduit to propose concrete surface, the degree of depth of conduit Transducers Embedded in Concrete face should not be less than 0.5m, under first batch of concrete, fall behind, concrete should be without interruption, and control the slump more than 20cm; 10.4, in the time pouring into the upper and lower 1m of stand column pile steel pipe, suitably slow down concrete rate of flooding, to reduce the impact of filling concrete on steel pipe post, and accomplish diligent concrete surface absolute altitude and the control depth of tremie situation surveyed; 10.5, filling concrete is super filled with after, will water and smash frame and hang, avoid colliding tool pipe and adjustment frame; By the perpendicularity situation of inclinometer repetition measurement tool pipe;
(11) tool pipe is pulled out, and concrete operation is: 11.1, and after concrete initial set, unclamp the flower basket bolt that connects stand column pile steel pipe and tool pipe, and tension rib is fixed on adjustment frame; 11.2, tool pipe is pulled out in examination, forbids pulling out by force; 11.3, examination pulls into after merit, unclamps top mechanic jacks, slowly promotes tool pipe with crane, reduces the touching impact on concrete inner column stake steel pipe, guarantees the high and perpendicularity of axial location, the pipe top mark of column steel pipe; 11.4, long casing is pulled out, stake hole backfill.
Further improve technique scheme, in described step (6), be evenly equipped with some miniature hydraulic jacks at the same absolute altitude of outer wall of tool pipe, this hydraulic jack is transferred to corresponding with long casing lower end inwall after designed elevation until tool pipe. In stand column pile steel pipe and tool pipe trim process, can determine and adjust direction according to the data that record, adjust tool pipe position by the miniature hydraulic jack on tool pipe, until perpendicularity meets design requirement.
Further, in described column steel pipe, be provided with interior steel reinforcement cage, this interior steel reinforcement cage is according to design blanking, column steel duct is divided and column steel-pipe welding, for the stressed welding by both sides of evenly taking, the dowel of the outer part of column steel pipe is made cage type by design and is stretched in tool pipe, moves up and down for not affecting clear hole conduit and concrete perfusion conduit, and what steel reinforcement cage pushed up most puts more energy into muscle enlarged diameter to being close to tool pipe inwall.
Further, the lower end outer wall uniform welding of described column steel pipe has some holdfasts, has increased the switching performance of column steel pipe part and lower floor's bored concrete pile, thereby the integraty of whole stand column pile is improved.
Further, before described step (5) steel reinforcement cage is laid, also has the operation of fabrication of reinforcing cage, in fabrication of reinforcing cage process, on the main muscle of steel reinforcement cage, every 3 meters, round roller formula concrete pad is set one, be arranged symmetrically with 4 around along steel reinforcement cage, control protective layer thickness; In transport and installation course, ensure that cage body is indeformable, cushion block is intact.
Further, described column outer wall of steel pipe is provided with and hangs muscle, this hangs muscle upper end and is temporarily fixed on flower basket bolt, after steel reinforcement cage hang on column steel pipe, this hangs muscle lower end and is welded to connect in steel reinforcement cage upper end, when steel reinforcement cage and column steel pipe are transferred to design attitude, hang muscle upper end and remove and being connected of flower basket bolt, be fixed on an aperture.
Compared with prior art, its beneficial effect is in the present invention:
(1) when this engineering method has solved the construction of semi-inverse method stand column pile, stand column pile stake top mark high below natural absolute altitude and stake footpath less, common intubate operation cannot construction difficult problem, ensure that engineering pile foundation engineering can carry out smoothly, architecture quality is better, has reduced the reinforcement measure of later stage because of quality problems generation.
(2) adopt this engineering method, compare with construction technology technique with other steel pipe post construction equipments, economy is better, cost performance excellence, simultaneously hanging device, hang support, be subject to power conversion device can have enough to meet the need utilization, environmental protection, meets the requirement that creates economizing type building site.
(3) ensure steel pipe post pile driving construction controlled process, guarantee that the high and perpendicularity of axial location, the pipe top mark of stand column pile steel pipe meets designing requirement, meets the requirement of on-the-spot stand column pile construction volume production.
(4) utilize tool pipe device, can be successfully by the accurate installation in position of steel pipe post stake in semi-inverse method, and easy to operate, increase work efficiency and reuse.
(5) utilize a whole set of to survey the adjusting device of hanging down, can steel pipe post stake position and perpendicularity be carried out repetition measurement and be regulated, ensure the accuracy of steel pipe post pile driving construction.
Brief description of the drawings
Fig. 1 is the process flow chart of semi-inverse method steel pipe post pile construction method described in embodiment 1.
Fig. 2 is the structural representation of casing.
Fig. 3 is the structural representation of adjustment frame.
Fig. 4 is the connection diagram of column steel pipe and tool pipe.
Fig. 5 is the connection diagram of tool pipe and steel shoulder pole.
Fig. 6 is casting and compacting of concrete shelf structure schematic diagram.
In figure: 1, column steel pipe, 2, tool pipe, 3, bell-and-spigot pipe, 4, iron wedge, 5, hanger, 6, adjustment frame, 7, steel walling crib, 8, the slurry mouthful that overflows, 9, steel shoulder pole, 10, guardrail, 11, cat ladder.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical solution of the present invention is elaborated, but protection scope of the present invention is not limited to described embodiment.
Embodiment 1: a kind of semi-inverse method steel pipe post pile construction method, comprises following construction procedure:
(1) location, stake position, concrete operation is: 1.1, calculate the coordinate of each position according to design drawing, and determine the position relationship at each hole and adjacent control point; 1.2, finishing place, stake position coordinate check errorless after, utilize total powerstation on construction ground in accurate location; 1.3, taking pile center as intersection point, go out 4 fender piles and bury underground in vertical and horizontal direction pilot measurement;
(2) long casing is buried underground, and concrete operation is: 2.1, require and the needs of the stressed fulcrum of hydraulic jack vertical adjustment according to pore-forming accuracy, and the long steel casing of customization 3-5m, casing internal diameter is than the large 20cm of bored concrete pile external diameter,, wall thickness 12mm, the reserved slurry mouth that overflows of upper port; 2.2, casing is buried underground to adopt and is dug and bury, by draw 4 fender pile points of longitudinal and transverse direction of putting adjust in place, casing center and a stake position center superposition, its deviation is not more than 20mm, and should strictly control the perpendicularity of casing, error is not more than 0.2%; 2.3, casing adjust to the right place and fixed stably after, the even backfill of clay compaction in layers for periphery, do not fall and not running pulp of periphery to ensure that in boring procedure casing is stable; 2.4, after casing is buried underground, check in time stake position, if there is error to be greater than code requirement, again bury underground;
(3) stand column pile pore-forming, concrete operation is: 3.1, pile-forming machine perching, utilizes the instrument and meter for automation device of stake machine to flatten centering, bit central and stake position center superposition; Fill in single inspection simultaneously, after the agreement of rig being inspected for acceptance through supervising engineer, start boring; 3.2, drilling and forming hole, with mud in the timely complementary apertures of progress, and controls creeping into and hoisting velocity of drilling tool, strictly controls aperture, perpendicularity, hole depth and mud index well, guarantees hole quality, and carries out drilling time log; 3.3, clear hole, gets into after predetermined hole depth for the first time, and the soil clearly that dallies in former depths is carried and carried out aperture, hole deviation, sediment thickness after brill and detect, and after parameters meets design requirement, removes a machine; 3.4, after pore-forming, stake hole periphery is flattened;
(4) adjustment frame is laid, concrete operation is: 4.1, make double-deck adjustment frame by oneself as bearing, adjustment frame bottom surface is welded with steel walling crib, be convenient to lay firmly at well head, adjustment frame lower floor is welded with respectively rotating shaft and base along the each medial surface of four direction middle part, and the mechanic jacks of laying manual adjustments regulates and fixture as stand column pile steel shaft line position; 4.2, again repair place, aperture, lay adjustment frame, utilize spirit level to survey each angle point absolute altitude, adjustment frame is adjusted to level, while laying adjustment frame, should ensure between two parties, reach casing center line, adjustment frame center line and stake position center line overlapped;
(5) steel reinforcement cage is laid, and concrete operation is: 5.1, steel reinforcement cage lay before by bar bender squad leader's self-inspection, then carried out an acceptance inspection together with owner, management by Quality Inspector, and carry out acceptance of concealed work visa then and there, steel reinforcement cage by inspection must not transferred; 5.2, when steel reinforcement cage is transferred, answer center, mating holes position, adopt positive and negative rotation progressively to sink at leisure, prevent collision; 5.3, steel reinforcement cage is transferred by joint, between every joint, is welded to connect, and final section steel reinforcement cage exposes to stand column pile aperture and is temporarily fixed on adjustment frame after fixing with stand column pile steel pipe and transfers simultaneously;
(6) stand column pile steel pipe and tool pipe splicing, concrete operation is: 6.1, tool pipe is made length should be not less than L+3m(L for stake top and the ground discrepancy in elevation), the bottom of tool pipe is provided with socket joint steel pipe, wherein socket joint steel pipe length is not less than 1.2m, internal diameter is greater than the external diameter 6-8mm of corresponding stand column pile steel pipe, end opening is made groove, necessary grinding process is carried out in groove inner side and stand column pile steel pipe upper port outside, guarantee that stand column pile steel pipe is connected with tool pipe, can prevent from again that concrete grout from entering the gap between two pipes and affecting tool pipe after a while to pull out; The axis of whole piece tool pipe must be point-blank; 6.2, stand column pile steel pipe and tool pipe carry out socket joint on processing space operating platform, the stop position of concrete socket joint length and stand column pile steel pipe is determined according to aperture absolute altitude, stand column pile top mark height by job site, adopt iron wedge to regulate at two steel pipe interfaces simultaneously, ensure the axis of stand column pile steel pipe and tool pipe point-blank; 6.3, for guaranteeing perpendicularity and absolute altitude control, make a steel shoulder pole and tool pipe top is rigidly connected with channel-section steel, the flatness of channel-section steel shoulder pole above and below needs to adjust, and guarantees that the horizontal plane of shoulder pole is vertical with tool pipe axis after connection; 6.4, draw a control line parallel with axis in the outside of tool pipe, centered by control line, in conjunction with the size of inclinometer pipe, weld the 2 spacing lines in road with the round steel of φ 8, between the 2 spacing lines in road, fix inclinometer pipe, in order to detect and to regulate two tubular axis lines; 6.5, below channel-section steel shoulder pole, be close to tool pipe and be symmetrically welded the tension rib of adjustable 4 flower basket bolts in order to temporary fixed connection column steel pipe and tool pipe; 6.6, the slurry mouthful that overflows is set on tool pipe, this slurry mouth that overflows is positioned at bell-and-spigot pipe top;
(7) stand column pile steel pipe and tool pipe are laid, and concrete operation is: 7.1, and adopt crawler crane unit to lift stand column pile steel pipe and tool pipe, and Hui Zhi aloft; 7.2, after lifting, make steel pipe and tool pipe be Vertical Free state, enter steel reinforcement cage center and slowly transfer, insert well head steel reinforcement cage; 7.3, hang stand column pile steel pipe and tool pipe to relevant position, at stand column pile outer wall of steel pipe welding hanger, and steel reinforcement cage is hung on hanger, guarantee that the effective length that stand column pile steel pipe enters steel reinforcement cage meets design; 7.4, transfer stand column pile steel pipe, tool pipe and steel reinforcement cage to designed elevation; 7.5, turn to, manually coordinate and the axial location of the adjustment frame jack pair tool pipe of well head regulates centering by suspension hook, in process, check with total powerstation, guarantee that Yu Zhuanwei center, tool pipe center is consistent, and tool pipe channel-section steel shoulder pole is carried out to repetition measurement with spirit level and horizontal guiding ruler, ensure four angle levels of channel-section steel shoulder pole, more spacing fixing with the jack on adjustment frame;
(8) stand column pile steel pipe and tool pipe fine setting, concrete operation is: 8.1, inclinometer is transferred by inclinometer pipe, measure the gradient of tool pipe; 8.2, determine and adjust direction according to the data that record, turn to, manually coordinate and the axial location of the adjustment frame jack pair tool pipe of well head regulates centering by suspension hook, in process, check with total powerstation, guarantee that Yu Zhuanwei center, tool pipe center is consistent, and tool pipe channel-section steel shoulder pole is carried out to repetition measurement with spirit level and horizontal guiding ruler, ensure four angle levels of channel-section steel shoulder pole, spacing fixing by the mechanic jacks on adjustment frame again, setting tool pipe position of upper;
(9) casting and compacting of concrete frame is laid, concrete operation is: 9.1, because the adjustment frame that regulates horizontal level and perpendicularity has been laid in aperture, for fear of the adjusted good steel pipe post stake of concreting impact, the another casting and compacting of concrete frame of making, water and smash top of support and leave watering of a footpath size and smash mouth, in order to catheter placement; 9.2, lay casting and compacting of concrete frame, avoid touching adjustment frame and tool pipe, and guarantee to water and smash frame and lay steadily;
(10) stand column pile filling concrete, for ensureing that steel pipe column inner concrete does not plan a successor and interlayer, adopt conduit to transfer to engineering pile steel reinforcement cage bottom by steel pipe column center, together pour into engineering pile body underwater concrete, the continuity of pouring into by underwater concrete, ensure the construction quality of steel pipe column inner concrete, and surpass filling according to design and code requirement; Concrete operation is: 10.1, and conduit must carry out waterproof test before using, and inspection conduit sealing property can be used after qualified; 10.2, smash opening's edge and in tool pipe catheter placement and carry out clear hole for the second time from watering, transfer in catheter procedure and want careful operation, prevent that conduit is to steel pipe tool pipe sharp impacts; Change slurry clear hole to the index such as mud balance, sediment thickness and meet code requirement, the bucket that reloads is prepared underwater concrete perfusion; 10.3, before filling concrete, make a report on to build and report table to a higher authorities for approval, in filling process, conduit should be all the time in concrete, forbid conduit to propose concrete surface, the degree of depth of conduit Transducers Embedded in Concrete face should not be less than 0.5m, under first batch of concrete, fall behind, concrete should be without interruption, and control the slump more than 20cm; 10.4, in the time pouring into the upper and lower 1m of stand column pile steel pipe, suitably slow down concrete rate of flooding, to reduce the impact of filling concrete on steel pipe post, and accomplish diligent concrete surface absolute altitude and the control depth of tremie situation surveyed; 10.5, filling concrete is super filled with after, will water and smash frame and hang, avoid colliding tool pipe and adjustment frame; By the perpendicularity situation of inclinometer repetition measurement tool pipe;
(11) tool pipe is pulled out, and concrete operation is: 11.1, and after concrete initial set, unclamp the flower basket bolt that connects stand column pile steel pipe and tool pipe, and tension rib is fixed on adjustment frame; 11.2, tool pipe is pulled out in examination, forbids pulling out by force; 11.3, examination pulls into after merit, unclamps top mechanic jacks, slowly promotes tool pipe with crane, reduces the touching impact on concrete inner column stake steel pipe, guarantees the high and perpendicularity of axial location, the pipe top mark of column steel pipe; 11.4, long casing is pulled out, stake hole backfill.
Wherein: step (6) stand column pile steel pipe and tool pipe splicing only need complete before in step (7), with not joining relation of step (1) to (5).
In described step (6), be evenly equipped with some miniature hydraulic jacks at the same absolute altitude of outer wall of tool pipe, this hydraulic jack is transferred to corresponding with long casing lower end inwall after designed elevation until tool pipe.
In described column steel pipe, be provided with interior steel reinforcement cage, this interior steel reinforcement cage is according to design blanking, column steel duct is divided and column steel-pipe welding, for the stressed welding by both sides of evenly taking, the dowel of the outer part of column steel pipe is made cage type by design and is stretched in tool pipe, move up and down for not affecting clear hole conduit and concrete perfusion conduit, what steel reinforcement cage pushed up most puts more energy into muscle enlarged diameter to being close to tool pipe inwall.
The lower end outer wall uniform welding of described column steel pipe has some holdfasts.
Before described step (5) steel reinforcement cage is laid, also has the operation of fabrication of reinforcing cage, in fabrication of reinforcing cage process, on the main muscle of steel reinforcement cage, round roller formula concrete pad is set one every 3 meters, is arranged symmetrically with 4 around along steel reinforcement cage, control protective layer thickness; In transport and installation course, ensure that cage body is indeformable, cushion block is intact.
Described column outer wall of steel pipe is provided with and hangs muscle, this hangs muscle upper end and is temporarily fixed on flower basket bolt, after steel reinforcement cage hang on column steel pipe, this hangs muscle lower end and is welded to connect in steel reinforcement cage upper end, when steel reinforcement cage and column steel pipe are transferred to design attitude, hang muscle upper end and remove and being connected of flower basket bolt, be fixed on an aperture.
As mentioned above, although represented and explained the present invention with reference to specific preferred embodiment, it shall not be construed as the restriction to the present invention self. Not departing under the spirit and scope of the present invention prerequisite of claims definition, can make in the form and details various variations to it.
Claims (6)
1. a semi-inverse method steel pipe post pile construction method, is characterized in that, comprises following construction procedure:
(1) location, stake position, concrete operation is: 1.1, calculate the coordinate of each position according to design drawing, and determine the position relationship at each hole and adjacent control point; 1.2, finishing place, stake position coordinate check errorless after, utilize total powerstation on construction ground in accurate location; 1.3, taking pile center as intersection point, go out 4 fender piles and bury underground in vertical and horizontal direction pilot measurement;
(2) long casing is buried underground, and concrete operation is: 2.1, require and the needs of the stressed fulcrum of hydraulic jack vertical adjustment according to pore-forming accuracy, and the long steel casing of customization 3-5m, casing internal diameter is than the large 15-25cm of bored concrete pile external diameter,, wall thickness 10-20mm, the reserved slurry mouth that overflows of upper port; 2.2, casing is buried underground to adopt and is dug and bury, by draw 4 fender pile points of longitudinal and transverse direction of putting adjust in place, casing center and a stake position center superposition, its deviation is not more than 20mm, and should strictly control the perpendicularity of casing, error is not more than 0.2%; 2.3, casing adjust to the right place and fixed stably after, the even backfill of clay compaction in layers for periphery, do not fall and not running pulp of periphery to ensure that in boring procedure casing is stable; 2.4, after casing is buried underground, check in time stake position, if there is error to be greater than code requirement, again bury underground;
(3) stand column pile pore-forming, concrete operation is: 3.1, pile-forming machine perching, utilizes the instrument and meter for automation device of stake machine to flatten centering, bit central and stake position center superposition; Fill in single inspection simultaneously, after the agreement of rig being inspected for acceptance through supervising engineer, start boring; 3.2, drilling and forming hole, with mud in the timely complementary apertures of progress, and controls creeping into and hoisting velocity of drilling tool, strictly controls aperture, perpendicularity, hole depth and mud index well, guarantees hole quality, and carries out drilling time log; 3.3, clear hole, gets into after predetermined hole depth for the first time, and the soil clearly that dallies in former depths is carried and carried out aperture, hole deviation, sediment thickness after brill and detect, and after parameters meets design requirement, removes a machine; 3.4, after pore-forming, stake hole periphery is flattened;
(4) adjustment frame is laid, concrete operation is: 4.1, make double-deck adjustment frame by oneself as bearing, adjustment frame bottom surface is welded with steel walling crib, be convenient to lay firmly at well head, adjustment frame lower floor is welded with respectively rotating shaft and base along the each medial surface of four direction middle part, and the mechanic jacks of laying manual adjustments regulates and fixture as stand column pile steel shaft line position; 4.2, again repair place, aperture, lay adjustment frame, utilize spirit level to survey each angle point absolute altitude, adjustment frame is adjusted to level, while laying adjustment frame, should ensure between two parties, reach casing center line, adjustment frame center line and stake position center line overlapped;
(5) steel reinforcement cage is laid, and concrete operation is: 5.1, steel reinforcement cage lay before by bar bender squad leader's self-inspection, then carried out an acceptance inspection together with owner, management by Quality Inspector, and carry out acceptance of concealed work visa then and there, steel reinforcement cage by inspection must not transferred; 5.2, when steel reinforcement cage is transferred, answer center, mating holes position, adopt positive and negative rotation progressively to sink at leisure, prevent collision; 5.3, steel reinforcement cage is transferred by joint, between every joint, is welded to connect, and final section steel reinforcement cage exposes to stand column pile aperture and is temporarily fixed on adjustment frame after fixing with stand column pile steel pipe and transfers simultaneously;
(6) stand column pile steel pipe and tool pipe splicing, concrete operation is: 6.1, the bottom of tool pipe is provided with socket joint steel pipe, wherein socket joint steel pipe length is not less than 1.2m, internal diameter is greater than the external diameter 6-8mm of corresponding stand column pile steel pipe, and end opening is made groove, and necessary grinding process is carried out in groove inner side and stand column pile steel pipe upper port outside, guarantee that stand column pile steel pipe is connected with tool pipe, can prevent from again that concrete grout from entering the gap between two pipes and affecting tool pipe after a while to pull out; The axis of whole piece tool pipe must be point-blank; 6.2, stand column pile steel pipe and tool pipe carry out socket joint on processing space operating platform, the stop position of concrete socket joint length and stand column pile steel pipe is determined according to aperture absolute altitude, stand column pile top mark height by job site, adopt iron wedge to regulate at two steel pipe interfaces simultaneously, ensure the axis of stand column pile steel pipe and tool pipe point-blank; 6.3, for guaranteeing perpendicularity and absolute altitude control, make a steel shoulder pole and tool pipe top is rigidly connected with channel-section steel, the flatness of channel-section steel shoulder pole above and below needs to adjust, and guarantees that the horizontal plane of shoulder pole is vertical with tool pipe axis after connection; 6.4, draw a control line parallel with axis in the outside of tool pipe, centered by control line, in conjunction with the size of inclinometer pipe, weld the 2 spacing lines in road with the round steel of φ 8, between the 2 spacing lines in road, fix inclinometer pipe, in order to detect and to regulate two tubular axis lines; 6.5, below channel-section steel shoulder pole, be close to tool pipe and be symmetrically welded the tension rib of adjustable 4 flower basket bolts in order to temporary fixed connection column steel pipe and tool pipe; 6.6, the slurry mouthful that overflows is set on tool pipe, this slurry mouth that overflows is positioned at bell-and-spigot pipe top;
(7) stand column pile steel pipe and tool pipe are laid, and concrete operation is: 7.1, and adopt crawler crane unit to lift stand column pile steel pipe and tool pipe, and Hui Zhi aloft; 7.2, after lifting, make steel pipe and tool pipe be Vertical Free state, enter steel reinforcement cage center and slowly transfer, insert well head steel reinforcement cage; 7.3, hang stand column pile steel pipe and tool pipe to relevant position, at stand column pile outer wall of steel pipe welding hanger, and steel reinforcement cage is hung on hanger, guarantee that the effective length that stand column pile steel pipe enters steel reinforcement cage meets design; 7.4, transfer stand column pile steel pipe, tool pipe and steel reinforcement cage to designed elevation; 7.5, turn to, manually coordinate and the axial location of the adjustment frame jack pair tool pipe of well head regulates centering by suspension hook, in process, check with total powerstation, guarantee that Yu Zhuanwei center, tool pipe center is consistent, and tool pipe channel-section steel shoulder pole is carried out to repetition measurement with spirit level and horizontal guiding ruler, ensure four angle levels of channel-section steel shoulder pole, more spacing fixing with the jack on adjustment frame;
(8) stand column pile steel pipe and tool pipe fine setting, concrete operation is: 8.1, inclinometer is transferred by inclinometer pipe, measure the gradient of tool pipe; 8.2, determine and adjust direction according to the data that record, turn to, manually coordinate and the axial location of the adjustment frame jack pair tool pipe of well head regulates centering by suspension hook, in process, check with total powerstation, guarantee that Yu Zhuanwei center, tool pipe center is consistent, and tool pipe channel-section steel shoulder pole is carried out to repetition measurement with spirit level and horizontal guiding ruler, ensure four angle levels of channel-section steel shoulder pole, spacing fixing by the mechanic jacks on adjustment frame again, setting tool pipe position of upper;
(9) casting and compacting of concrete frame is laid, concrete operation is: 9.1, because the adjustment frame that regulates horizontal level and perpendicularity has been laid in aperture, for fear of the adjusted good steel pipe post stake of concreting impact, the another casting and compacting of concrete frame of making, water and smash top of support and leave watering of a footpath size and smash mouth, in order to catheter placement; 9.2, lay casting and compacting of concrete frame, avoid touching adjustment frame and tool pipe, and guarantee to water and smash frame and lay steadily;
(10) stand column pile filling concrete, for ensureing that steel pipe column inner concrete does not plan a successor and interlayer, adopt conduit to transfer to engineering pile steel reinforcement cage bottom by steel pipe column center, together pour into engineering pile body underwater concrete, the continuity of pouring into by underwater concrete, ensure the construction quality of steel pipe column inner concrete, and surpass filling according to design and code requirement; Concrete operation is: 10.1, and conduit must carry out waterproof test before using, and inspection conduit sealing property can be used after qualified; 10.2, smash opening's edge and in tool pipe catheter placement and carry out clear hole for the second time from watering, transfer in catheter procedure and want careful operation, prevent that conduit is to steel pipe tool pipe sharp impacts; Change slurry clear hole to the index such as mud balance, sediment thickness and meet code requirement, the bucket that reloads is prepared underwater concrete perfusion; 10.3, before filling concrete, make a report on to build and report table to a higher authorities for approval, in filling process, conduit should be all the time in concrete, forbid conduit to propose concrete surface, the degree of depth of conduit Transducers Embedded in Concrete face should not be less than 0.5m, under first batch of concrete, fall behind, concrete should be without interruption, and control the slump more than 20cm; 10.4, in the time pouring into the upper and lower 1m of stand column pile steel pipe, suitably slow down concrete rate of flooding, to reduce the impact of filling concrete on steel pipe post, and accomplish diligent concrete surface absolute altitude and the control depth of tremie situation surveyed; 10.5, filling concrete is super filled with after, will water and smash frame and hang, avoid colliding tool pipe and adjustment frame; By the perpendicularity situation of inclinometer repetition measurement tool pipe;
(11) tool pipe is pulled out, and concrete operation is: 11.1, and after concrete initial set, unclamp the flower basket bolt that connects stand column pile steel pipe and tool pipe, and tension rib is fixed on adjustment frame; 11.2, tool pipe is pulled out in examination, forbids pulling out by force; 11.3, examination pulls into after merit, unclamps top mechanic jacks, slowly promotes tool pipe with crane, reduces the touching impact on concrete inner column stake steel pipe, guarantees the high and perpendicularity of axial location, the pipe top mark of column steel pipe; 11.4, long casing is pulled out, stake hole backfill.
2. a kind of semi-inverse method steel pipe post pile construction method according to claim 1, it is characterized in that, in described step (6), the same absolute altitude of outer wall at tool pipe is evenly equipped with some miniature hydraulic jacks, and this miniature hydraulic jack is transferred to corresponding with long casing lower end inwall after designed elevation until tool pipe.
3. a kind of semi-inverse method steel pipe post pile construction method according to claim 1, it is characterized in that, in described column steel pipe, be provided with interior steel reinforcement cage, this interior steel reinforcement cage is according to design blanking, column steel duct is divided and column steel-pipe welding, and for the stressed welding by both sides of evenly taking, the dowel of the outer part of column steel pipe is made cage type by design and stretched in tool pipe, move up and down for not affecting clear hole conduit and concrete perfusion conduit, what steel reinforcement cage pushed up most puts more energy into muscle enlarged diameter to being close to tool pipe inwall.
4. a kind of semi-inverse method steel pipe post pile construction method according to claim 1, is characterized in that, the lower end outer wall uniform welding of described column steel pipe has some holdfasts.
5. a kind of semi-inverse method steel pipe post pile construction method according to claim 1, it is characterized in that, before described step (5) steel reinforcement cage is laid, also has the operation of fabrication of reinforcing cage, in fabrication of reinforcing cage process, on the main muscle of steel reinforcement cage, every 3 meters, round roller formula concrete pad is set one, be arranged symmetrically with 4 around along steel reinforcement cage, control protective layer thickness; In transport and installation course, ensure that cage body is indeformable, cushion block is intact.
6. a kind of semi-inverse method steel pipe post pile construction method according to claim 1, it is characterized in that, described column outer wall of steel pipe is provided with and hangs muscle, this hangs muscle upper end and is temporarily fixed on flower basket bolt, after steel reinforcement cage hang on column steel pipe, this hangs muscle lower end and is welded to connect in steel reinforcement cage upper end, transfer to design attitude when steel reinforcement cage and column steel pipe, hang muscle upper end and remove and being connected of flower basket bolt, be fixed on an aperture.
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| CN110295593A (en) * | 2019-06-28 | 2019-10-01 | 张殿忠 | A kind of hypogee lid digs the construction technology of steel pipe column |
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