CN111549774A - Drilling and filling integrated device for processing thick sediment after pile forming - Google Patents
Drilling and filling integrated device for processing thick sediment after pile forming Download PDFInfo
- Publication number
- CN111549774A CN111549774A CN202010382448.XA CN202010382448A CN111549774A CN 111549774 A CN111549774 A CN 111549774A CN 202010382448 A CN202010382448 A CN 202010382448A CN 111549774 A CN111549774 A CN 111549774A
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- drill rod
- rod part
- steel wire
- hole
- wire rope
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/64—Repairing piles
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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
- E02D13/08—Removing obstacles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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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
- E02D2250/003—Injection of material
Abstract
The invention belongs to the technical field of drilling and grouting pile foundation construction in infrastructure construction engineering of buildings, roads, railways, municipal works and the like, and particularly relates to a drilling and grouting integrated device for treating thick sediments after pile forming. The hole sweeping device comprises an upper hole sweeping device and a bottom hole sweeping device, and the upper hole sweeping device is arranged at the upper part of the bottom hole sweeping device; the upper hole sweeping device comprises an upper drill rod part, an upper hole sweeping part and an upper hole sweeping steel wire rope, the coupler is fixedly connected with the upper drill rod part, and the upper hole sweeping part is uniformly distributed on the upper drill rod part; the bottom hole sweeping device comprises a bottom drill rod part, a clamping piece and a bottom hole sweeping steel wire rope, the bottom drill rod part is used for fixing the bottom hole sweeping steel wire rope, the bottom hole sweeping steel wire rope is fixedly connected with the bottom drill rod part through the clamping piece, the bottom drill rod part is arranged at the lower part of the upper drill rod part, the lower drill rod part is provided with the clamping piece, and two ends of the clamping piece are welded and fixed on the side wall of the lower drill rod part; the device makes simply, convenient to use, greatly reduced because of the risk of carrying out the processing again after the unclean blind slip casting of pile foundation bottom sediment clearance, make pile foundation quality defects handle one step and target in place.
Description
Technical Field
The invention belongs to the technical field of drilling and grouting pile foundation construction in infrastructure construction engineering of buildings, roads, railways, municipal works and the like, and particularly relates to a drilling and grouting integrated device for treating thick sediments after pile forming.
Background
The cast-in-situ bored pile has the advantages of high bearing capacity, good anti-seismic performance, convenient construction and the like, is widely applied to various infrastructure construction projects, belongs to underground projects, is restricted by geological conditions, and is easy to cause quality problems due to the complexity and diversity of various engineering geological conditions, particularly the problems that the pile length caused by over-thick sediment at the bottom of the pile cannot meet the design requirement, the pile body is incomplete, the axial bearing capacity of a single pile is insufficient and the like, so that the quality potential safety hazard is caused. After the pile foundation is processed by the traditional method, the pile foundation bottom grouting reinforcement is carried out for detection, the pile body quality still can not meet the design and specification requirements, the cost of continued processing increases virtually.
The pressure loss of the jet air flow or water flow of the traditional high-pressure rotary jet drilling machine nozzle in a high water level is overlarge, the effect of cleaning sediments (particularly dense sand sediment layers) is not obvious, the quality of a pile body cannot meet the design and standard requirements, the pile body still needs to be treated again, and the manpower, material resources, financial resources and time are wasted.
Therefore, in order to ensure that the pile foundation quality meets the design and standard requirements, from many angles, project personnel self-manufacture a simple drilling and grouting integrated device integrating drilling, hole cleaning and cement slurry pouring,
disclosure of Invention
In order to solve the problems in the prior art, the invention provides a drilling and grouting integrated device for treating thick sediments after pile forming. When the pile-forming detection result of the cast-in-situ bored pile shows that the sediment at the bottom of the pile exceeds the design requirement, the sediment is treated.
In order to achieve the purpose, the invention adopts the following technical scheme: a drilling and grouting integrated device for treating thick sediments after pile forming comprises a hole sweeping device and a grouting pipe assembly, wherein the hole sweeping device is arranged at the upper part of the grouting pipe assembly and comprises an upper hole sweeping device and a bottom hole sweeping device;
the upper hole sweeping device comprises an upper drill rod part, an upper hole sweeping part and an upper hole sweeping steel wire rope, the coupler is fixedly connected with the upper drill rod part, and the upper hole sweeping part is uniformly distributed on the upper drill rod part;
the bottom hole sweeping device comprises a bottom drill rod part, a clamping piece and a bottom hole sweeping steel wire rope, the bottom drill rod part is used for fixing the bottom hole sweeping steel wire rope, the bottom hole sweeping steel wire rope is fixedly connected with the bottom drill rod part through the clamping piece, the bottom drill rod part is arranged at the lower part of the upper drill rod part, the lower drill rod part is provided with the clamping piece, and two ends of the clamping piece are welded and fixed on the side wall of the lower drill rod part;
grout pipe subassembly includes grout pipe and grout hole, and grout pipe upper portion and the welded fastening of bottom drill pole portion bottom, grout pipe are steel tubular structure, and grout pipe tip sets up the grout hole, and the grout hole is the toper form, and grout hole tip one side part welds closedly, and another layer of grout hole tip forms the grout opening, and the bottom of hole device is swept in the bottom to the grout pipe setting.
Preferably, the upper sweeping holes comprise longitudinal holes and lateral holes, the longitudinal holes are uniformly arranged in the longitudinal direction of the upper drill rod part, the lateral holes are arranged in the lateral direction of the upper drill rod part, the distance d2 between the adjacent longitudinal holes and the lateral holes is 100-150 mm, the distance d1 between the adjacent longitudinal holes is 200-300 mm, a single-strand steel wire rope penetrates through the upper sweeping holes on the same end surface during installation to form upper sweeping hole steel wire ropes on two sides of the upper drill rod part, and the length d3 of the single-side upper sweeping hole steel wire rope is 500-1000 mm.
Preferably, the number of the clamping pieces is four, the clamping pieces are uniformly distributed on the side wall of the bottom drill rod part, when the bottom drill rod is installed, the multi-strand steel wire rope penetrates through the clamping pieces, the hammer head is used for knocking the clamping pieces, the clamping pieces compress the multi-strand steel wire rope to enable the multi-strand steel wire rope to be tightly connected with the bottom drill rod part, the length of the multi-strand steel wire rope is 1500-1250 mm, the length of the multi-strand steel wire rope exceeds the pile diameter by 500mm, the multi-strand steel wire rope on one side forms a bottom hole sweeping steel wire rope, the bottom hole sweeping steel wire ropes are four and are uniformly and symmetrically distributed.
Preferably, the clamping piece is formed by pressing flat steel with the width of 2cm and the thickness of 5mm, and the cross section of the clamping piece is n-shaped.
Preferably, the length of the grouting pipe is 200mm, the wall thickness of the grouting pipe is 200mm, and the diameter of the grouting pipe is 48 mm.
Compared with the prior art, the invention has the beneficial effects that: the device is simple to manufacture and convenient to use, and greatly reduces the risk of secondary treatment after blind grouting due to incomplete cleaning of sediment at the bottom of the pile foundation, so that the quality defect of the pile foundation is treated in one step;
when the quality defect of the sediment at the bottom of the pile is treated, the drilling and grouting integrated device is adopted, and the pile has the following effects:
1) the centrifugal force of the hole-sweeping steel wire rope is greater than the gravity of the sediment by utilizing the rotating speed of the drill rod, so that the purpose of cutting and scattering the sediment is achieved, and the hole-sweeping steel wire rope is convenient to use, time-saving and labor-saving;
2) the sediment is cleaned in stages, so that the sediment can be thoroughly cleaned, and the quality of pile foundation treatment is ensured;
3) the drilling and grouting integrated device with different lengths can be designed for sediments with different thicknesses, so that the sediments are subjected to cutting force in the whole thickness range from top to bottom, and the sediments are easily and effectively replaced;
4) when the steel wire rope is seriously worn, the steel wire rope can be replaced at any time, and the maintenance process is simple, economic and practical;
5) need not to change special grout head, utilize the device can realize "three continuous": the method comprises the following steps of (1) replacing sediment by grouting mud through a grouting pipe while cutting the sediment, grouting clear water through the grouting pipe to replace the mud after replacing the sediment, and quickly grouting the mud through the grouting pipe after replacing the mud;
6) by using the drilling and grouting integrated device, multiple effects of drilling, hole sweeping, hole cleaning and grouting can be achieved simultaneously;
7) can be repeatedly used for a plurality of times.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic view of the structure of the grouting pipe in the invention.
FIG. 3 is a first schematic view of the construction process of the present invention.
FIG. 4 is a second schematic view of the construction process of the present invention.
FIG. 5 is a third schematic view of the construction process of the present invention.
FIG. 6 is a fourth schematic view of the construction process of the present invention.
FIG. 7 shows the present invention.
FIG. 8 is a schematic view of the upper sweeping hole of the present invention.
Figure 9 is a schematic view of the present invention including a hole sweeping device.
Fig. 10 is a schematic view of the core hole in the pile body concrete of the present invention.
FIG. 11 is a schematic illustration of the present invention showing the removal of sand from a slurry.
FIG. 12 is a schematic diagram showing the qualification of the cement paste after the cement paste is poured.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are provided only for illustrating the present invention and are not intended to limit the scope of the present invention.
Referring to fig. 1-12, the drilling and grouting integrated device for treating thick sediments after pile-forming comprises a hole sweeping device 1 and a grouting pipe assembly 2, wherein the hole sweeping device 1 is arranged at the upper part of the grouting pipe assembly 2, the hole sweeping device 1 comprises an upper hole sweeping device 11 and a bottom hole sweeping device 12, the upper hole sweeping device 11 is arranged at the upper part of the bottom hole sweeping device 12,
the upper hole sweeping device 11 comprises an upper drill rod part 111, upper sweeping holes 112 and an upper hole sweeping steel wire rope 113, a coupler 110 is fixedly connected with the upper drill rod part 111, the upper sweeping holes 112 are uniformly distributed on the upper drill rod part 111, the upper sweeping holes 112 are in a plum blossom shape, the diameter of the upper sweeping holes 112 is 5mm, the upper sweeping holes 112 comprise longitudinal holes 1121 and lateral holes 1122, the longitudinal holes 1121 are uniformly arranged in the longitudinal direction of the upper drill rod part 111, the lateral holes 1122 are arranged in the lateral direction of the upper drill rod part 111, the distance d2 between the adjacent longitudinal holes 1121 and the lateral holes 1122 is 100 mm-150 mm, the distance d1 between the adjacent longitudinal holes 1121 is 200 mm-300 mm, when the upper sweeping holes 112 on the same end surface are installed, a single steel wire rope penetrates through the upper sweeping steel wire rope on two sides of the upper drill rod part 111 to form the upper hole sweeping steel wire rope 113, the length d3 of the upper sweeping hole steel wire rope on one side is 500-, when in use, the length of the steel wire rope is intercepted according to different pile diameters, the length of the single steel wire rope is 1000 mm-2000 mm according to different pile diameters, the torsion degree formed by the steel wire rope during twisting and the drill stem hole form a clamping state, so that the single steel wire rope does not fly out of the hole when the drill stem rotates at high speed,
the bottom hole sweeping device 12 comprises a bottom drill rod part 121, a clamping piece 122 and a bottom hole sweeping steel wire rope 123, wherein the bottom drill rod part 121 is fixedly provided with the bottom hole sweeping steel wire rope 123, the bottom hole sweeping steel wire rope 123 is fixedly connected with the bottom drill rod part 121 through the clamping piece 122, the bottom drill rod part 121 is arranged at the lower part of the upper drill rod part 111, the lower drill rod part 121 is provided with the clamping piece 122, the clamping piece 122 is formed by pressing flat steel with the width of 2cm and the thickness of 5mm, the cross section of the clamping piece 122 is in a reverse U shape, two ends of the clamping piece 122 are welded and fixed on the side wall of the lower drill rod part 121, the four clamping pieces 122 are uniformly distributed on the side wall of the bottom drill rod part 121, when in installation, a plurality of steel wire ropes pass through the clamping piece 122, the clamping piece 122 is knocked by a hammer head, the plurality of steel wire ropes 122 are tightly connected with the plurality of steel wire ropes and the bottom drill rod, the hole sweeping radius is larger than the designed pile diameter of the pile foundation when the drill rod rotates, the steel wire ropes A3 are selected as the multi-strand steel wire ropes, the steel wire ropes A on one side form the bottom hole sweeping steel wire rope 123, the number of the bottom hole sweeping steel wire ropes 123 is four, the bottom hole sweeping steel wire ropes 123 are uniformly and symmetrically distributed, the length d4 of the bottom hole sweeping steel wire rope 123 is 252-1250mm,
the grouting pipe assembly 2 comprises a grouting pipe 21 and a grouting hole 22, the upper part of the grouting pipe 21 is welded and fixed with the bottom of the bottom drill rod part 121, the grouting pipe 21 is of a steel pipe structure, the length of the grouting pipe 21 is 200mm, the wall thickness of the grouting pipe 21 is 200mm, the diameter of the grouting pipe 21 is 48mm, the grouting hole 22 is arranged at the end part of the grouting pipe 21, the grouting hole 22 is in a conical shape, one side part of the end part of the grouting hole 22 is welded and closed, the other side layer at the end part of the grouting hole 22 forms a grouting opening, the grouting pipe 21 is arranged at the bottom of the bottom hole sweeping device 12, a section of steel pipe with the length of 200mm, the diameter of 48mm and the wall thickness of 3.5mm is welded at the bottom of the hole sweeping device to form the grouting pipe 21, the end part of the grouting, wherein the left 1/2 part is welded and closed, and the rest part forms a grouting opening, so that the grouting equipment 5 is convenient for the grouting construction of mud, clear water and cement paste in the later period.
The grouting equipment 5 comprises a mixing drum 51, a grout storage drum 52, a grouting pump 53 and a grouting pipe 54, wherein one side of the grouting pump 53 is connected with the grouting pipe 54, and the other side of the grouting pump 53 is connected with the mixing drum 51 and the grout storage drum 52.
The invention comprises the following steps: (1) manufacturing a hole sweeping device: utilize rig 3 to squeeze into pile body concrete 4 with drilling rod 31 and core barrel 32, get 1 diameter 15 cm's core hole at the pile bolck center of pile body concrete 4, it is 50cm to get the length that the core depth surpassed design pile body concrete 4, and it is finished to get to core and to change core barrel 32 for the integrative device is irritated to the brill of the thick sediment of above-mentioned pile formation aftertreatment, and the preparation process of the integrative device is irritated to the brill of the thick sediment of pile formation aftertreatment is as follows:
firstly, judging the bottom sediment thickness of the pile body concrete 4 according to the pile detection and coring result, calculating the punching range and the number of single-strand steel wire ropes, manufacturing an upper hole sweeping device 11, punching a small hole with the diameter of 5mm in a quincunx shape on the upper part of an upper drill rod part 111, wherein the vertical distance between two adjacent holes in different directions is 10-15 cm, the vertical distance between two adjacent holes in the same direction is 20-30 cm, penetrating the single-strand steel wire ropes into the holes, the upper and lower-layer steel wire ropes are in a cross shape, cutting the length of the upper and lower-layer steel wire ropes according to different pile diameters when in use (1-2 m), and forming a clamping state with the upper sweeping hole 112 by utilizing the torsion degree formed by the steel wire ropes during twisting, so that the steel wire ropes do not fly out from holes of the upper sweeping hole 112 when the drill rod rotates.
Secondly, manufacturing the bottom hole sweeping device 12, arranging four multi-strand steel wire ropes (A3cm) at four quadrant points at the bottom of the bottom drill rod part 121 to form the bottom hole sweeping device, expanding the bottom of the pile foundation generally during hole punching through impact drilling to form a pile bottom expanded head, properly increasing the length (1.5-2.5 m) of the bottom hole sweeping steel wire rope by 50cm compared with the pile diameter according to different pile diameters, and enabling the hole sweeping radius to be larger than the designed pile diameter of the pile foundation during rotation of a drill rod.
Processing and manufacturing pile-forming integrated drilling and grouting devices with different rotation radiuses and then processing thicker sediments, firstly adopting a drilling and grouting integrated drilling and grouting device with a small radius, cleaning sediments out a certain space, and then replacing a further hole sweeping device with a large radius;
(2) manufacturing the clamping piece 122: the clamping piece 122 is formed by pressing flat steel with the width of 2cm and the thickness of 5mm, is arranged at four quadrant points at the bottom of the bottom hole sweeping device 12, is welded on the bottom drill rod part 121, a plurality of steel wire ropes penetrate through the clamping piece 122, and the clamping piece is knocked by a hammer head to be tightly connected with the steel wire ropes and the bottom drill rod part 121.
(3) Manufacturing a grouting pipe assembly 2: the grouting pipe 21 is arranged at the bottom of the hole sweeping device, a section of steel pipe with the length of 200mm, the diameter of 48mm and the wall thickness of 3.5mm is welded at the bottom of the hole sweeping device to form the grouting pipe 21, the end of the grouting pipe 21 is flattened to form a conical opening, the 1/2 part on the left side is welded and closed, the grouting hole 22 is formed in the rest part, and grouting equipment is used for grouting construction of mud, clean water and cement paste conveniently in the later period.
As shown in fig. 3-6, the construction process of the present invention is as follows: step 1: assembling a drilling machine, a mud jacking pump and the like in place, and coring concrete of a pile body;
step 2: drilling and grouting the integrated device to perform small-diameter hole sweeping, grouting and hole cleaning;
and step 3: and drilling and grouting the integrated device to perform full-diameter hole sweeping, grouting and hole cleaning.
And 4, step 4: and (5) carrying out pile bottom cement paste pouring by using the drilling and pouring integrated device.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a drilling of thick sediment of post-processing becomes stake irritates integrative device which characterized in that: the hole sweeping device comprises an upper hole sweeping device and a bottom hole sweeping device, and the upper hole sweeping device is arranged at the upper part of the bottom hole sweeping device;
the upper hole sweeping device comprises an upper drill rod part, an upper hole sweeping part and an upper hole sweeping steel wire rope, the coupler is fixedly connected with the upper drill rod part, and the upper hole sweeping part is uniformly distributed on the upper drill rod part;
the bottom hole sweeping device comprises a bottom drill rod part, a clamping piece and a bottom hole sweeping steel wire rope, the bottom drill rod part is used for fixing the bottom hole sweeping steel wire rope, the bottom hole sweeping steel wire rope is fixedly connected with the bottom drill rod part through the clamping piece, the bottom drill rod part is arranged at the lower part of the upper drill rod part, the lower drill rod part is provided with the clamping piece, and two ends of the clamping piece are welded and fixed on the side wall of the lower drill rod part;
grout pipe subassembly includes grout pipe and grout hole, and grout pipe upper portion and the welded fastening of bottom drill pole portion bottom, grout pipe are steel tubular structure, and grout pipe tip sets up the grout hole, and the grout hole is the toper form, and grout hole tip one side part welds closedly, and another layer of grout hole tip forms the grout opening, and the bottom of hole device is swept in the bottom to the grout pipe setting.
2. The drilling and grouting integrated device for processing thicker sediments after pile forming according to claim 1, which is characterized in that: the upper sweeping holes comprise longitudinal holes and lateral holes, the longitudinal holes are uniformly arranged in the longitudinal direction of the upper drill rod part, the lateral holes are arranged in the lateral direction of the upper drill rod part, the distance d2 between the adjacent longitudinal holes and the lateral holes is 100-150 mm, the distance d1 between the adjacent longitudinal holes is 200-300 mm, single-strand steel wire ropes penetrate between the upper sweeping holes on the same end surface during installation to form upper sweeping hole steel wire ropes on two sides of the upper drill rod part, and the length d3 of the upper sweeping hole steel wire rope on one side is 500-1000 mm.
3. The drilling and grouting integrated device for processing thicker sediments after piling according to claim 1 or 2, which is characterized in that: the number of the clamping pieces is four, the clamping pieces are evenly distributed on the side wall of the bottom drill rod part, when the bottom drill rod part is installed, the multi-strand steel wire rope penetrates through the clamping pieces, the hammer head is used for knocking the clamping pieces, the clamping pieces compress the multi-strand steel wire rope to enable the multi-strand steel wire rope to be tightly connected with the multi-strand steel wire rope and the bottom drill rod part, the length of the multi-strand steel wire rope is 1500-fold 2500mm, the length of the multi-strand steel wire rope exceeds the pile diameter by 500mm, the multi-strand steel wire rope on one side forms a bottom hole sweeping steel wire rope, the bottom hole sweeping steel wire.
4. The drilling and grouting integrated device for processing thicker sediments after pile forming according to claim 3, which is characterized in that: the clamping piece is formed by pressing flat steel with the width of 2cm and the thickness of 5mm, and the cross section of the clamping piece is inverted U-shaped.
5. The drilling and grouting integrated device for processing thicker sediments after pile forming according to claim 3, which is characterized in that: the length of the grouting pipe is 200mm, the wall thickness of the grouting pipe is 200mm, and the diameter of the grouting pipe is 48 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382448.XA CN111549774A (en) | 2020-05-08 | 2020-05-08 | Drilling and filling integrated device for processing thick sediment after pile forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382448.XA CN111549774A (en) | 2020-05-08 | 2020-05-08 | Drilling and filling integrated device for processing thick sediment after pile forming |
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| CN111549774A true CN111549774A (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010382448.XA Pending CN111549774A (en) | 2020-05-08 | 2020-05-08 | Drilling and filling integrated device for processing thick sediment after pile forming |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576210A (en) * | 2020-12-15 | 2021-03-30 | 中铁北京工程局集团有限公司 | Clear hole device of drilling bored concrete pile |
| CN115434310A (en) * | 2022-09-22 | 2022-12-06 | 国网河北省电力有限公司经济技术研究院 | PHC inclined pipe pile post-fracture compensation tensioning connection device and construction method |
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| US4403884A (en) * | 1981-03-18 | 1983-09-13 | Florida Wire And Cable Company | Wire assemblies for repetitive, continuous cycle, tensile load conditions, particularly sucker rods for oil wells |
| CN202611593U (en) * | 2012-05-23 | 2012-12-19 | 中国建筑第八工程局有限公司 | Simple drill |
| CN205154037U (en) * | 2015-11-06 | 2016-04-13 | 宁波易通建设有限公司 | Drill bit that construction drilling bored concrete pile was used |
| CN109853570A (en) * | 2018-12-25 | 2019-06-07 | 安徽省建设工程测试研究院有限责任公司 | A kind of cast-in-place concrete pile pile bottom sediment cleaning plant |
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2020
- 2020-05-08 CN CN202010382448.XA patent/CN111549774A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4403884A (en) * | 1981-03-18 | 1983-09-13 | Florida Wire And Cable Company | Wire assemblies for repetitive, continuous cycle, tensile load conditions, particularly sucker rods for oil wells |
| CN202611593U (en) * | 2012-05-23 | 2012-12-19 | 中国建筑第八工程局有限公司 | Simple drill |
| CN205154037U (en) * | 2015-11-06 | 2016-04-13 | 宁波易通建设有限公司 | Drill bit that construction drilling bored concrete pile was used |
| CN109853570A (en) * | 2018-12-25 | 2019-06-07 | 安徽省建设工程测试研究院有限责任公司 | A kind of cast-in-place concrete pile pile bottom sediment cleaning plant |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576210A (en) * | 2020-12-15 | 2021-03-30 | 中铁北京工程局集团有限公司 | Clear hole device of drilling bored concrete pile |
| CN115434310A (en) * | 2022-09-22 | 2022-12-06 | 国网河北省电力有限公司经济技术研究院 | PHC inclined pipe pile post-fracture compensation tensioning connection device and construction method |
| CN115434310B (en) * | 2022-09-22 | 2023-11-28 | 国网河北省电力有限公司经济技术研究院 | PHC inclined tube pile post-fracture repair tensioning connection device and construction method |
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Application publication date: 20200818 |