CN114277802B - Post-insertion method positioning construction structure for reverse construction method steel pipe structural column - Google Patents
Post-insertion method positioning construction structure for reverse construction method steel pipe structural column Download PDFInfo
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- CN114277802B CN114277802B CN202111520810.6A CN202111520810A CN114277802B CN 114277802 B CN114277802 B CN 114277802B CN 202111520810 A CN202111520810 A CN 202111520810A CN 114277802 B CN114277802 B CN 114277802B
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Abstract
The invention relates to the technical field of steel pipe structural columns, and discloses a reverse construction method steel pipe structural column post-insertion positioning construction structure which comprises pile holes, steel sleeves and steel pipe structural columns, wherein the pile holes are provided with cast-in-place piles, the steel pipe structural columns comprise steel pipe columns and tool columns, and the bottoms of the steel pipe columns are provided with insertion sections which are inserted into the cast-in-place piles; the periphery of the steel pipe column is provided with a plurality of jacks, and an ultrasonic probe of the ultrasonic probe is placed in the steel pipe structural column and is placed in the insertion section; the ultrasonic detection head obtains perpendicularity data of the steel pipe column, and the jacks adjust the angle of the steel pipe column through the telescopic shafts until the perpendicularity data meet set requirements; according to the perpendicularity data, the telescopic shafts of the jacks jack the steel sleeve back, perpendicularity of the steel pipe structural column is adjusted and positioning is completed, accurate positioning of the steel pipe structural column is guaranteed, positioning is accurate and rapid, and comprehensive construction cost is low.
Description
Technical Field
The invention relates to the technical field of steel pipe structural columns, in particular to a post-insertion method positioning construction structure of a reverse construction method steel pipe structural column.
Background
When the deep foundation pit supporting engineering adopts the reverse construction method, the upper part adopts a steel pipe structural pile, and the lower part adopts a filling pile which is one of common supporting forms.
For example, in the construction of Shenzhen urban rail transit No. 13 line Shenzhen gulf port station, the station excavates the average depth 21m, the ground layer is distributed from top to bottom in the field range to be plain fill, silty clay, gravel sand, silty clay, fully weathered silty sandstone and strong, medium and breeze granite layers, and the thickness of the covering layer above the wind-treated rock exceeds 60m; the station excavation design adopts a cover excavation reverse construction method, the enclosure structure adopts an underground continuous wall, the vertical supporting member is a cast-in-place pile inserted steel pipe structural column, the steel pipe column is used as a part of the main body structure, and the design adopts a post-insertion process. Pile foundation of the steel pipe structural column is designed into a bottom-expanded bored concrete pile, a pile end bearing layer is made of strong weathered rock, the diameter of a straight hole section pile is 2500mm, the diameter of the bottom-expanded pile is 4000mm, the average hole depth is 55m, the average length of the steel pipe structural column is 25m, the diameter of the designed steel pipe pile is 1300mm, and the bottom of the steel pipe pile is embedded into the top of the foundation bored concrete pile by 4m. The allowable deviation between the center line of the designed steel pipe structural column and the basic center line is +/-5 mm, and the verticality deviation of the steel pipe structural column is not more than 1/1000 of the length and not more than 15mm at maximum.
In the prior art, for a deep foundation pit adopting a cast-in-place pile matched with a steel pipe structural column as a supporting form, the construction perpendicularity control requirement of the steel pipe structural column is high in reverse construction, the positioning construction difficulty of the steel pipe structural column is extremely high, the construction is extremely complex, when the steel pipe structural column deviates, the steel pipe structural column is greatly influenced by the section of the steel pipe structural column, the bottom deviation correcting and adjusting difficulty of the steel pipe structural column is high, and the steel pipe structural column needs to be repeatedly pulled up and reinserted to finish positioning, so that the time and the labor are consumed.
Disclosure of Invention
The invention aims to provide a post-insertion position locating construction structure of a reverse construction method steel pipe structural column, and aims to solve the problem that in the prior art, the perpendicularity locating of the steel pipe structural column is difficult to construct in the reverse construction method construction.
The invention discloses a reverse construction method for a steel pipe structural column post-insertion positioning construction structure, which comprises a pile hole, a steel sleeve sleeved on the inner side wall of the pile hole and a steel pipe structural column which is downwards arranged in the pile hole, wherein a filling pile is arranged at the bottom of the pile hole, the steel pipe structural column comprises a steel pipe column and a tool column which is butted at the top of the steel pipe column, and an insertion section which is inserted into the filling pile is arranged at the bottom of the steel pipe column;
the periphery of the steel pipe column is provided with a plurality of jacks which are horizontally arranged, the jacks are arranged on the same horizontal plane, the inner ends of the jacks are fixedly abutted to the outer side wall of the steel pipe column, and the telescopic shafts of the jacks are arranged towards the inner side wall of the steel sleeve; an ultrasonic probe is placed in the steel pipe structural column and is arranged along the central axis of the pile hole, and the ultrasonic probe is placed in the insertion section;
on the same horizontal plane, the ultrasonic detection head obtains perpendicularity data of the steel pipe column by detecting distance data of a plurality of positions on the inner side wall of the steel pipe column and the central axis of the pile hole, and according to the perpendicularity data, the jacks are propped against the inner side wall of the steel sleeve through telescopic shafts and then stretch out and draw back to adjust the angle of the steel pipe column until the perpendicularity data obtained by the ultrasonic detection head meet the set requirement.
Further, the diameter of the bored concrete pile is larger than that of the steel pipe structural column.
Further, the jack is connected with a lifting belt.
Further, the periphery of steel-pipe column is equipped with a plurality of horizontally arranged's mount, and is a plurality of the mount is in on the same horizontal plane, be equipped with open-top's fixed slot in the mount, the jack is fixed in the fixed slot, the outer end of mount is equipped with the hole of wearing that supplies the telescopic shaft of jack to pass.
Further, the outline dimension of the top opening of the fixing groove is larger than that of the jack.
Further, the periphery of steel-pipe column is provided with the solid fixed ring of horizontal arrangement, gu the fixed ring surrounds along the periphery of steel-pipe column and arranges, and is a plurality of the mount sets up gu the fixed ring is last.
Further, an inner elastic structure is inserted in the fixing groove, the inner elastic structure comprises an inner abutting plate abutted against the inner end of the fixing groove and an inner bending sheet arranged on the inner abutting plate, the inner bending sheet is bent towards the inner end of the jack, the inner end of the jack is bent towards the inner abutting plate in a deformation mode by abutting against the inner elastic sheet, and the lifting belt is connected with the inner abutting plate.
Further, be equipped with outer elastic structure in the outer end of fixed slot, outer elastic structure includes the outer butt board of butt at the outer end of fixed slot and sets up the outer bending piece on outer butt board, outer bending piece is crooked to be arranged towards the outer end of jack, the outer end of jack is propped outer elastic piece towards outer butt board bending deformation.
Further, an annular space is arranged between the top of the tool column and the steel sleeve, the annular space is arranged around the periphery of the tool column, an annular air bag is embedded in the annular space, the internal pressure of the annular air bag is smaller than a set pressure value, the lower part of the annular air bag is embedded in the annular space, and the upper part of the annular air bag extends to the upper part of the tool column.
Further, the lower part of the annular air bag is in a conical shape with a smaller lower part and a larger upper part.
Compared with the prior art, the reverse construction method steel pipe structure post-insertion positioning construction structure has the advantages that the pile hole is formed by drilling after the steel sleeve is inserted into the pile position, the perpendicularity data of the steel pipe column are detected and obtained by the ultrasonic detection head after the steel pipe structure column is put into the pile position, the telescopic shafts of the jacks are used for jacking the steel sleeve according to the perpendicularity data, the perpendicularity of the steel pipe structure column is adjusted and positioning is completed, the accurate positioning of the steel pipe structure column is ensured, the construction efficiency is high, the jack can automatically adjust the perpendicularity, the repeated utilization can be realized, the positioning is accurate and rapid, a large amount of auxiliary operation time is saved, the construction progress is accelerated, and the comprehensive construction cost is low.
Drawings
Fig. 1 is a schematic front view of a post-insertion positioning construction structure of a reverse construction method steel pipe structure column;
FIG. 2 is a schematic front view of a steel casing pipe for full rotary drilling machine construction provided by the invention;
fig. 3 is a schematic front view of the jack provided by the invention before the steel pipe structural column is adjusted;
fig. 4 is a schematic front view of the jack provided by the invention after the jack is adjusted to the steel pipe structural column;
FIG. 5 is a schematic front view of an inner elastic structure provided by the present invention;
FIG. 6 is a schematic front view of an outer elastic structure provided by the present invention;
FIG. 7 is a schematic cross-sectional view of an annular bladder provided by the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The implementation of the present invention will be described in detail below with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-7, a preferred embodiment of the present invention is provided.
The reverse construction method steel pipe structure post-insertion method positioning construction structure comprises a pile hole 101, a steel sleeve 100 sleeved on the inner side wall of the pile hole 101 and a steel pipe structure post which is downwards arranged in the pile hole 101, wherein a cast-in-place pile 102 is arranged at the bottom of the pile hole 101, the steel pipe structure post comprises a steel pipe column 201 and a tool post 202 which is butted at the top of the steel pipe column 201, and an insertion section which is inserted into the cast-in-place pile 102 is arranged at the bottom of the steel pipe column 201.
The periphery of the steel pipe column 201 is provided with a plurality of jacks 400 which are horizontally arranged, the jacks 400 are arranged on the same horizontal plane, the inner ends of the jacks 400 are fixedly abutted against the outer side wall of the steel pipe column 201, and the telescopic shafts 402 of the jacks 400 are arranged towards the inner side wall of the steel sleeve 100; an ultrasonic probe 300 is placed in the steel pipe structural column, the ultrasonic probe 300 is arranged along the central axis of the pile hole 101, and the ultrasonic probe 300 is placed in the insertion section;
on the same horizontal plane, the ultrasonic probe 300 obtains perpendicularity data of the steel pipe column 201 by detecting distance data between a plurality of positions on the inner side wall of the steel pipe column 201 and the central axis of the pile hole 101, and according to the perpendicularity data, the jacks 400 are abutted on the inner side wall of the steel sleeve 100 through the telescopic shafts 402 and then telescopic to adjust the angle of the steel pipe column 201 until the perpendicularity data obtained by the ultrasonic probe 300 meet the set requirements.
The reverse construction method steel pipe structure post-insertion positioning construction structure provided by the above is characterized in that the pile hole 101 is formed by drilling after the steel sleeve 100 is inserted into the pile position, after the steel pipe structure post is put into, the perpendicularity data of the steel pipe column 201 are detected and obtained by utilizing the ultrasonic detection head 300, the telescopic shafts 402 of the jacks 400 are used for pushing the steel sleeve 100 back according to the perpendicularity data, the perpendicularity of the steel pipe structure post is adjusted and positioned, the accurate positioning of the steel pipe structure post is ensured, the construction efficiency is high, the jack 400 automatically adjusts the perpendicularity, the repeated utilization can be realized, the positioning is accurate and rapid, a large amount of auxiliary operation time is saved, the construction progress is accelerated, and the comprehensive construction cost is low.
In actual construction, the steel sleeve 100 is inserted downwards at the pile position by using the full rotary drilling machine 500; drilling in a pile position by using a rotary drilling rig to form a pile hole 101, and lowering a reinforcement cage and pouring concrete into the lower part of the pile hole 101 to form a pouring pile 102; the steel pipe structural column is lifted by the crane and is lowered into the pile hole 101 from top to bottom, and the steel pipe structural column is gradually lowered into the pile hole 101 by the alternate operation of the full rotary drilling machine 500 and the clamping device of the full rotary platform until the bottom of the steel pipe column 201 is inserted into the cast-in-place pile 102 to a set depth.
The steel sleeve 100 can be used as a back support for rectifying the deviation of the steel pipe structural column by the jack 400, and can be used as a protection wall of the pile hole 101 in the process of drilling the pile hole 101. The steel sleeve 100 provides guiding positioning for the positioning deviation correction verticality of the steel pipe structural column, and in order to ensure that the steel sleeve 100 is smoothly pulled out after the positioning of the steel pipe structural column is completed in the subsequent construction, the bottom of the steel sleeve 100 is formed about 1.0m above the design top elevation of the cast-in-place pile 102.
The ultrasonic probe 300 can be a UDM100WG detector with a measurement accuracy of 0.2% FS and a maximum aperture of 4.0m. The ultrasonic probe 300 is lowered at a certain speed, ultrasonic pulse reflection signals of vertical hole walls in four directions (or two directions) are received and recorded in the process of lowering the ultrasonic probe 300, the state of the hole walls can be intuitively and simultaneously monitored in the four directions, parameters such as the hole diameter, the perpendicularity and the like can be displayed through a screen, detection data can be played back or printed out at any time, and analysis and management of data materials are facilitated.
The diameter of the bored concrete pile 102 is greater than the diameter of the steel pipe structural column, so that the overall structure of the bored concrete pile matched with the steel pipe structural column is more stable.
When the vertical data obtained by the ultrasonic probe 300 meets the set requirement, a plurality of fixing plates are longitudinally arranged at the top of the steel sleeve 100, the fixing plates are circumferentially arranged along the periphery of the tool column 202 and abut against the periphery of the tool column 202, and after the fixing plates fix the tool column 202 in position, the ultrasonic probe 300 is lifted out of the steel pipe structural column.
When the bottom of the steel pipe column 201 contacts the top of the insertion section, the tool column 202 is clamped by the full-circle drilling machine 500 and the clamping device of the full-circle platform, and when the crane is separated from the lifting of the steel pipe structural column, the clamping device of the full-circle drilling machine 500 and the clamping device of the full-circle platform release the clamping of the tool column 202, and the alternating operation steps of the full-circle drilling machine 500 and the clamping device of the full-circle platform on the steel pipe structural column are as follows:
a) After the tool column 202 is clamped by the full-circle drilling machine 500 and the steel pipe column 201 is downwards inserted into a set stroke, the tool column 202 is clamped by a clamping device of a full-circle platform, and the full-circle drilling machine 500 moves upwards to reset;
b) The full-circle drilling machine 500 clamps the tool column 202, and the clamping device of the full-circle platform releases the clamping of the tool column 202;
c) Repeating the operation of the construction step a) and the construction step b) until a set depth is inserted into the cast-in-place pile 102 at the bottom of the steel pipe column 201.
In this way, through the alternate cooperation of the clamping device of the all-round platform and the all-round drilling machine 500, the vertical downward insertion of the steel pipe structural column is realized, and through the repeated downward insertion of the set stroke, the stability of the steel pipe structural column in the construction process can be ensured, and the vertical downward insertion can be kept.
The lifting belt is connected to the jack 400, so that the jack 400 can be lifted out of the pile hole by the lifting belt after the steel pipe column structure is positioned.
In this embodiment, the periphery of the steel pipe column 201 is provided with a plurality of fixing frames arranged horizontally, the plurality of fixing frames are on the same horizontal plane, a fixing groove with an open top is arranged in the fixing frame, the jack 400 is fixed in the fixing groove, and the outer end of the fixing frame is provided with a penetrating hole for the telescopic shaft 402 of the jack 400 to pass through.
The periphery of steel-pipe column 201 is provided with the solid fixed ring 401 that the level was arranged, and gu fixed ring 401 encircles along the periphery of steel-pipe column 201 and arranges, and a plurality of mounts set up on gu fixed ring 401, so, the arrangement of the mount of being convenient for, and can make a plurality of mounts be in same horizontal plane.
The external dimension of the top opening of the fixed slot is larger than that of the jack 400, after the steel pipe structural column is positioned, after the jack 400 is decompressed, the telescopic shaft 402 of the jack 400 is retracted into the fixed slot through the penetrating hole, the jack 400 is lifted out of the fixed slot through the lifting belt, and the pile hole 101 is lifted upwards.
In this embodiment, an inner elastic structure is inserted in the fixing groove, and the inner elastic structure includes an inner abutting plate 601 abutting against the inner end of the fixing groove and an inner bending piece 602 disposed on the inner abutting plate 601, the inner bending piece 602 is bent towards the inner end of the jack 400, and the lifting belt is connected with the inner abutting plate 601; after the jack 400 is placed in the fixing groove, the inner end of the jack 400 is bent and deformed toward the inner abutting plate 601 against the inner elastic sheet.
Before the lifting belt is used for lifting the jack 400, the lifting belt is used for lifting the inner elastic structure out of the fixing groove, the inner bending piece 602 is restored to deform, the jack 400 moves towards the inner end of the fixing groove by a set distance under the elastic action of the inner bending piece 602, and then the lifting belt is used for lifting the jack 400 out of the fixing groove.
Like this, in arranging jack 400 firmly in the fixed slot through interior elastic construction, guarantee jack 400 the steadiness when adjusting steel pipe structural column straightness that hangs down to, carry out the fixed slot earlier with interior elastic construction through the lifting belt, can be in the relaxation state with jack 400 in the fixed slot, be convenient for carry out the fixed slot with jack 400, and, the elastic deformation of interior flexure strip 602 can be with jack 400 towards the inner removal setting distance of fixed slot, when carrying and drawing jack 400, can not take place to interfere between jack 400 and the mount.
An outer elastic structure is arranged in the outer end of the fixed slot, and comprises an outer abutting plate 603 abutting against the outer end of the fixed slot and an outer bending plate 604 arranged on the outer abutting plate 603, wherein the outer bending plate 604 is bent towards the outer end of the jack 400.
After the jack 400 is placed in the fixing groove, the outer end of the jack 400 is pressed against the outer elastic sheet to bend and deform towards the outer abutting plate 603; after the inner elastic structure is pulled out of the fixing groove by the pulling belt, the outer bending piece 604 is restored to be deformed, and the jack 400 is driven to move a set distance toward the inner end of the lower fixing groove.
Like this, through outer elastic construction and interior elastic construction cooperation, with jack 400 firm in arranging the fixed slot in, guarantee the steadiness of jack 400 when adjusting steel pipe structural column straightness that hangs down to, through carrying the area with jack 400 carry behind the fixed slot, outer bending piece 604 resumes the deformation, with jack 400 towards the inner removal setting distance of fixed slot, when carrying jack 400, can not take place to interfere between jack 400 and the mount.
An annular space is arranged between the top of the tool post 202 and the steel sleeve 100, the annular space is arranged around the periphery of the tool post 202, an annular air bag 700 is embedded in the annular space, the internal pressure of the annular air bag 700 is smaller than a set pressure value, the lower part of the annular air bag 700 is embedded in the annular space, and the upper part of the annular air bag 700 extends to the upper part of the tool post 202.
The internal pressure of annular gasbag 700 is less than the settlement pressure value, and like this, annular gasbag 700 can not restrict the straightness regulation of steel pipe structural column, is convenient for warp, and annular gasbag 700 can play the effect of interim support to the top of tool post 202, and jack 400 carries out the straightness regulation at the periphery of steel pipe column, and the top of tool post 202 then utilizes annular gasbag 700 to carry out interim location, the straightness that hangs down of steel pipe structural column of being convenient for adjusts and the interim support of adjustment in-process.
The lower part of the annular airbag 700 is in a conical shape with a small lower part and a large upper part, so that the annular airbag 700 is conveniently embedded in the annular space, and the lower part of the annular airbag 700 can not limit the verticality adjustment of the jack 400 to the steel pipe structural column while temporarily supporting the tool column 202.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. The reverse construction method is characterized by comprising a pile hole, a steel sleeve sleeved on the inner side wall of the pile hole and a steel pipe structural column which is downwards arranged in the pile hole, wherein a filling pile is arranged at the bottom of the pile hole, the steel pipe structural column comprises a steel pipe column and a tool column which is butted at the top of the steel pipe column, and an inserting section which is inserted into the filling pile is arranged at the bottom of the steel pipe column;
the periphery of the steel pipe column is provided with a plurality of jacks which are horizontally arranged, the jacks are arranged on the same horizontal plane, the inner ends of the jacks are fixedly abutted to the outer side wall of the steel pipe column, and the telescopic shafts of the jacks are arranged towards the inner side wall of the steel sleeve; an ultrasonic probe is placed in the steel pipe structural column and is arranged along the central axis of the pile hole, and the ultrasonic probe is placed in the insertion section;
on the same horizontal plane, the ultrasonic detection head acquires perpendicularity data of the steel pipe column by detecting distance data between a plurality of positions on the inner side wall of the steel pipe column and the central axis of the pile hole, and a plurality of jacks are abutted on the inner side wall of the steel sleeve through telescopic shafts and then telescopic to adjust the angle of the steel pipe column until the perpendicularity data acquired by the ultrasonic detection head meet the set requirement;
the periphery of the steel pipe column is provided with a plurality of horizontally arranged fixing frames, the fixing frames are positioned on the same horizontal plane, a fixing groove with an opening at the top is formed in each fixing frame, the jack is fixed in each fixing groove, and the outer end of each fixing frame is provided with a penetrating hole for a telescopic shaft of the jack to penetrate through;
the periphery of the steel pipe column is provided with a fixing ring which is horizontally arranged, the fixing ring is circumferentially arranged along the periphery of the steel pipe column, and a plurality of fixing frames are arranged on the fixing ring;
the inner elastic structure comprises an inner abutting plate abutting against the inner end of the fixing groove and an inner bending sheet arranged on the inner abutting plate, the inner bending sheet is arranged in a bending way towards the inner end of the jack, the inner end of the jack is pressed against the inner bending sheet to be deformed in a bending way towards the inner abutting plate, and the jack is connected with a lifting belt which is connected with the inner abutting plate;
the outer end of the fixed slot is internally provided with an outer elastic structure, the outer elastic structure comprises an outer abutting plate abutted against the outer end of the fixed slot and an outer bending sheet arranged on the outer abutting plate, the outer bending sheet is arranged towards the outer end of the jack in a bending way, and the outer end of the jack is abutted against the outer bending sheet to be bent and deformed towards the outer abutting plate.
2. The reverse construction steel pipe structure post-insertion positioning construction structure according to claim 1, wherein the diameter of the bored concrete pile is larger than the diameter of the steel pipe structure post.
3. A reverse construction steel pipe structure post-insertion position fixing construction structure according to any one of claims 1 to 2, wherein the top opening of the fixing groove has a larger external dimension than that of the jack.
4. A reverse construction steel pipe structure post-insertion position fixing construction structure according to any one of claims 1 to 2, wherein an annular space is provided between the top of the tool post and the steel sleeve, the annular space is arranged around the periphery of the tool post, an annular air bag is embedded in the annular space, the internal pressure of the annular air bag is smaller than a set pressure value, the lower part of the annular air bag is embedded in the annular space, and the upper part of the annular air bag extends to the upper part of the tool post.
5. The reverse construction steel pipe structure post-insertion position fixing construction structure according to claim 4, wherein the lower portion of the annular air bag is in a conical shape with a small bottom and a large top.
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| CN202111520810.6A CN114277802B (en) | 2021-12-13 | 2021-12-13 | Post-insertion method positioning construction structure for reverse construction method steel pipe structural column |
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| CN202111520810.6A CN114277802B (en) | 2021-12-13 | 2021-12-13 | Post-insertion method positioning construction structure for reverse construction method steel pipe structural column |
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| CN114277802B true CN114277802B (en) | 2023-08-25 |
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| JP2014080836A (en) * | 2012-10-18 | 2014-05-08 | Taisei Corp | Vertical accuracy management method of under-ground piled column |
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| CN110016910A (en) * | 2019-04-26 | 2019-07-16 | 重庆交通大学 | Gasbag-type high-precision positioner and construction method can be recycled in a kind of steel pipe post stake |
| CN110219326A (en) * | 2019-05-23 | 2019-09-10 | 海天建设集团有限公司 | The underwater vertical adjustment construction technology of inverse method one-column one-pile |
| CN212358284U (en) * | 2020-07-23 | 2021-01-15 | 中铁五局集团第四工程有限责任公司 | Construction structure of permanent steel-pipe column of lid digs contrary process |
| CN112900450A (en) * | 2021-01-20 | 2021-06-04 | 深圳市工勘岩土集团有限公司 | Rotary drilling and full-rotation combined back-inserting method positioning method for steel pipe structure pile by reverse construction method |
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2021
- 2021-12-13 CN CN202111520810.6A patent/CN114277802B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08210832A (en) * | 1995-02-01 | 1996-08-20 | Kajima Corp | Method for measuring distortion of underwater cylindrical pile |
| JP2014080836A (en) * | 2012-10-18 | 2014-05-08 | Taisei Corp | Vertical accuracy management method of under-ground piled column |
| CN206113915U (en) * | 2016-08-29 | 2017-04-19 | 深圳兴通成机电技术有限公司 | Verticality detector |
| CN110016910A (en) * | 2019-04-26 | 2019-07-16 | 重庆交通大学 | Gasbag-type high-precision positioner and construction method can be recycled in a kind of steel pipe post stake |
| CN110219326A (en) * | 2019-05-23 | 2019-09-10 | 海天建设集团有限公司 | The underwater vertical adjustment construction technology of inverse method one-column one-pile |
| CN212358284U (en) * | 2020-07-23 | 2021-01-15 | 中铁五局集团第四工程有限责任公司 | Construction structure of permanent steel-pipe column of lid digs contrary process |
| CN112900450A (en) * | 2021-01-20 | 2021-06-04 | 深圳市工勘岩土集团有限公司 | Rotary drilling and full-rotation combined back-inserting method positioning method for steel pipe structure pile by reverse construction method |
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|---|---|
| CN114277802A (en) | 2022-04-05 |
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