CN115467325A - Disease repairing treatment process for inclined long pile - Google Patents
Disease repairing treatment process for inclined long pile Download PDFInfo
- Publication number
- CN115467325A CN115467325A CN202211107664.9A CN202211107664A CN115467325A CN 115467325 A CN115467325 A CN 115467325A CN 202211107664 A CN202211107664 A CN 202211107664A CN 115467325 A CN115467325 A CN 115467325A
- Authority
- CN
- China
- Prior art keywords
- pile
- hole
- grouting
- pipe
- holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a disease repairing treatment process for an inclined long pile, and relates to the technical field of pile foundation construction. The method comprises the following steps: s1, ultrasonic detection; s2, coring judgment; s3, pumping water in the pile; s4, cutting off the auxiliary cage; s5, installing a guide plate; s6, drilling a grouting hole by a drilling machine; s7, washing a drilling hole; s8, performing primary rotary spraying grouting; s9, sealing the orifice and installing a grouting pipe; s10, secondary high-pressure grouting and pressure stabilization; and S11, performing drilling coring verification on the processing result. The invention has the characteristics of high construction efficiency, reliable construction quality, short construction period and low cost.
Description
Technical Field
The invention belongs to the technical field of pile foundation construction, and particularly relates to a repair treatment process for long piles with inclined diseases.
Background
At present, in foundation construction of numerous engineering projects, a pile foundation mode is adopted in many cases. Including urban buildings, municipal works, highway bridges, high-pile wharfs, offshore wind power and the like. Some uncertain factors are inevitable in the construction process, pile foundation construction is influenced, and the phenomena of concrete segregation, mud clamping, pile breaking and other defects and diseases of the pile body are caused. Making it unable to meet design and usage requirements. The conventional treatment method is to blast the damaged foundation pile and perform in-situ punching and pile forming treatment again, so that the treatment time is long and the cost is high. Particularly, in offshore wind power engineering, the height of a wind driven generator on the sea surface can reach one hundred meters, the depth of seawater can reach 30 meters, pile foundations of some wind power piles need to be inserted into rocks in the seabed, concrete is injected into hollow steel pipe piles near the seabed, and the hollow steel pipe piles are connected with a seabed bearing stratum at the bottom after being hardened.
Due to the fact that offshore construction conditions are poor and conditions are complex, the concrete part of the pile foundation is difficult to avoid sometimes and defects are generated. For the ultra-long pile foundation, the position of the defect needs to be detected firstly, the defect is accurately positioned, and then the defect is reinforced by adopting a proper method. In addition, the offshore long pile has the characteristic that some pile bodies are inclined. The drill rod used for repairing is easy to be unstably bent and deviate from the original positioning due to the characteristics of self gravity, front end stress and the like, so that the detection and the reinforcement become very difficult. Through continuous attempts, a repair treatment process for an inclined long pile using a guide plate is invented.
Disclosure of Invention
The invention aims to solve the technical problem of providing a repairing treatment process for long inclined damaged piles, which has the advantages of high treatment efficiency, reliable construction quality, short construction period and low cost.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a drilling and grouting treatment construction process for damaged pile foundations comprises the following steps:
s1, ultrasonic detection; carrying out ultrasonic detection on the pile foundation, and preliminarily determining the position and the length of a defect according to the abnormal waveform part;
s2, coring judgment; coring judgment is carried out on the pile foundation, and rock-socketed pile quality analysis is carried out by combining the ultrasonic detection result;
s3, pumping water in the pile;
s4, cutting off the auxiliary cage;
s5, installing a guide plate;
s6, drilling a grouting hole by a drilling machine;
s7, washing a drilling hole;
s8, performing primary rotary spraying grouting;
s9, sealing the orifice and installing a grouting pipe;
s10, secondary high-pressure grouting and pressure stabilization;
and S11, performing drilling coring verification on the processing result.
Preferably, in the step S1, ultrasonic detection is carried out on the pile foundation, and the position and the length of the defect are preliminarily determined according to the distance between the waveform abnormal part and the top surface of the concrete;
preferably, in step S2; and (4) coring and judging each rock-socketed pile by the hole drilling machine one by one, and analyzing the quality of the rock-socketed pile by combining an ultrasonic detection report. After comprehensive judgment, the quality defect of the rock-socketed pile is treated and constructed.
Preferably, in step S5, a surveyor samples the inclination angle and the inclination direction of the steel pipe pile according to pile sinking data, measures the inclination angle by using a guiding rule, and compounds the highest point and the lowest point according to different heights of butt welding of the steel pipe pile; then at least two guide plates are arranged perpendicular to the pile body of the steel pipe pile, a plurality of drilled holes are reserved in the guide plates, the axes of the reserved holes of the guide plates need to be on the same straight line and are parallel to the steel pipe pile, and the position of the reserved hole in each guide plate is 40-45cm away from the pile wall of the steel pipe pile; and determining the number of the guide plates according to the length of the hollow hole section of the steel pipe pile.
Preferably, the number of the preformed holes of the guide plate is 4, the edge of the guide plate is provided with a viewing port, and the center of the viewing port is positioned on a perpendicular bisector of a connecting line of the centers of the two preformed holes.
Preferably, in step S6, before drilling, a guide pipe is installed, the guide pipe is arranged according to a preformed hole on the guide plate and is installed to the top surface of the cast-in-place pile in parallel with the steel pipe pile, and is hammered into the laitance layer by at least 0.5m, after the guide pipe is arranged, the inclination of the guide pipe is rechecked, the top end of the guide pipe is properly adjusted to ensure that the guide pipe is parallel to the steel pipe pile, and after the slope of the guide pipe is confirmed to be the same as that of the steel pipe pile, drilling is performed.
Preferably, in step S7, a high-pressure rotary jet spray mode is adopted to spray a hole-washing medium, high-pressure rotary jet cutting and cleaning is performed up and down in a reciprocating manner on the defective segment of the bearing layer at each pile end, and rock debris, residue and muddy water deposited in the hole are discharged from the guide pipe orifice until the return water at all the orifices is gradually clear from turbid color, and the hole-washing operation is stopped after the return water is clear for 30 min.
Preferably, the hole washing medium is sprayed by a high-pressure double-pipe rotary spraying machine, the high-pressure double-pipe rotary spraying machine is provided with an alloy drill rod, the end part of the drill rod is provided with a rotary spraying drill bit, the rotary spraying drill bit is symmetrically provided with two high-pressure spraying holes, and the hole washing medium is sprayed out of the high-pressure spraying holes.
Preferably, in step S8, the grouting material with high fluidity and high fluidity is selected as the grouting material, so that the repairing effect on the pile foundation is better than that of common cement slurry. Before grouting, a water pressing test is carried out to test the through condition of the grouting holes, namely, firstly pumping a dilute grouting material body to replace clean water and air in the holes until the orifices return pure grouting material, and observing whether the grouting holes are mutually communicated or not, wherein if the holes have the phenomena of water return and orifice bubbling at different degrees, the through condition in the pile is indicated; if the condition does not exist, the pressure is gradually increased to 5-7 MPa, so that grouting holes are communicated with each other before high-pressure grouting is carried out, and residues in the pile are removed.
Preferably, in step S9, a closing plate for closing the orifice is made of a circular steel plate and is welded to the casing, a circular hole is processed in the closing plate, and the grouting pipe and the exhaust pipe are welded to the closing plate after penetrating through the circular hole; the slip casting pipe is for trompil section slip casting pipe in 1m position within range more than the highest elevation of defect position until the minimum elevation of pile foundation defect position below 1m position, and the hole is the slip casting hole, and this section slip casting pipe sets up the vertical slip casting hole of twice, and the slip casting hole is the plum blossom shape and arranges, and adjacent subtend slip casting hole interval 15cm, unilateral slip casting hole interval 30cm, slip casting hole seam width 2mm.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the invention has the advantages of high construction efficiency, reliable construction quality, short construction period and low cost.
Drawings
FIG. 1 is a flow chart of the construction process of the present invention;
FIG. 2 is a schematic view of the connection structure and position distribution of the guide plates and the guide pipes in the pile foundation;
in the figure: 1. a guide plate; 2. a guide tube; 3. pile body defects; 4. pile bottom defects;
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
As shown in fig. 1-2, a drilling and grouting treatment construction process for a diseased pile foundation comprises the following steps:
step S1, carrying out ultrasonic detection on the pile foundation, and preliminarily determining the position and the length of a defect according to the position of the waveform abnormal part from the top surface of the concrete;
and S2, taking a hole drilling machine to perform coring judgment on each rock-socketed pile one by one, and performing quality analysis on the rock-socketed piles by combining ultrasonic detection reports. After comprehensive judgment, the quality defect of the rock-socketed pile is treated and constructed.
S3, pumping water in the pile; according to the length of a hollow hole of a pile foundation in the steel pipe pile and the slope of the pile foundation, the drilling direction is ensured to be the same as the direction of the socketed pile, and the pumping depth is determined by considering the reduction of the welding operation difficulty of the guide plates in the pile and the safety risk of constructors.
S4, auxiliary cage cutting; a drilling platform is set up, in order to ensure that the guide plate 2 is parallel to the pile bottom and avoid the influence of an auxiliary cage on the installation of the guide plate 2, a crawler crane on a ship is adopted, a main hook lifts an auxiliary hanging basket to hang personnel and a cutting knife to a set position (not less than 12-20 m downwards from the top of a steel pipe pile) to cut off a steel reinforcement cage, and meanwhile, an auxiliary hook of the crawler crane is adopted to pull an upper auxiliary cage hole to prevent the auxiliary cage from falling into the hole and injuring constructors in the hole.
S5, installing a guide plate 2; a measurer sets out the inclination angle and the inclination direction of the steel pipe pile according to pile sinking data, measures the inclination angle by using a guiding rule, and compounds a highest point and a lowest point according to different heights of butt welding of the steel pipe pile; then at least two guide plates 2 are arranged perpendicular to the pile body of the steel pipe pile, a plurality of drilled holes are reserved in the guide plates 2, the axes of the reserved holes of the guide plates 2 are required to be on the same straight line and parallel to the steel pipe pile, and the position of the reserved hole in the guide plate 2 is 40-45cm away from the pile wall of the steel pipe pile; the number of the prepared holes of the guide plate is 4, and the guide plate is arranged in a square shape. An observation port is arranged at the edge of the guide plate, and the center of the observation port is positioned on the vertical bisector of the connecting line of the centers of the two preformed holes. And the number and the positions of the drill holes are comprehensively considered according to the results of a pile foundation brief oscillogram, a core rock sample and the like. And determining the number of the guide plates 2 according to the length of the hollow hole section of the steel pipe pile. The length of the hollow hole section of the steel pipe pile is too long, and the guide plate 2 is additionally arranged downwards to ensure the slope accuracy of a drill rod of the drilling machine.
S6, drilling a grouting hole by a drilling machine; installing guide pipe 1 before drilling, arranging and installing parallel steel pipe piles to the top surface of the cast-in-place pile according to preformed holes in guide plate 2 by guide pipe 1, hammering floating slurry layer at least 0.5m, rechecking the inclination of guide pipe 1 after guide pipe 1 is arranged, properly adjusting the top end of guide pipe 1, ensuring to be parallel to the steel pipe piles, and performing drilling operation after confirming that the inclination of guide pipe 1 is the same as that of the steel pipe piles.
S7, washing a drilling hole; the alloy drill rod is installed on the high-pressure double-pipe rotary spraying machine, the rotary spraying drill bit is assembled at the end part of the drill rod, two high-pressure spray holes are symmetrically formed in the drill bit, a hole washing medium is sprayed in a high-pressure rotary spraying mode and pumped into the drill rod from the inside of the drill rod through a high-pressure pump, high-pressure rotary spraying cutting and cleaning are carried out in an up-and-down reciprocating mode on a defect section of a bearing layer at each pile end, impurities in a pile foundation defect 3 and a pile bottom defect 4 enter the hole under the action of the hole washing medium, rock debris, residues, muddy water and the like deposited in the hole are discharged from a guide pipe opening until all hole openings are gradually clear from turbid color, hole washing operation is stopped after the returned water is clear for 30min, and the high-pressure rotary spraying machine is debugged before hole washing, power distribution facilities and circuits are checked, clear water is reserved, and the continuous hole washing operation process is ensured.
S8, performing primary rotary spraying grouting; the stirring of the grouting material is carried out according to the required amount of the grouting holes, the grouting material is required to be uniformly stirred and is used along with the stirring, the stirring water cannot use sewage, and impurities are strictly prevented from being mixed into the adding liquid. Meanwhile, the dilute and concentrated sequences of the added liquid in the grouting process can not be reversed. Before grouting, a water pressing test is carried out to test the through condition of the grouting holes, namely, firstly pumping dilute grouting material to replace clear water and air in the holes until the holes return pure grouting material, and observing whether the grouting holes are mutually through or not, wherein if the holes have the phenomena of water return and hole bubbling at different degrees, the through condition in the pile is indicated; if the condition does not exist, the pressure is gradually increased to 5-7 MPa, so that the grouting holes are communicated with each other before high-pressure grouting is carried out, and residues in the pile are removed.
S9, sealing the orifice and installing a grouting pipe; a sealing plate for sealing the orifice is made of a circular steel plate and is welded with the sleeve, a circular hole is processed on the sealing plate, and the grouting pipe and the exhaust pipe are welded with the sealing plate after penetrating through the circular hole; the slip casting pipe is for trompil section slip casting pipe in 1m position below the minimum elevation of pile foundation defect position until 1m position scope more than the highest elevation of defect position, and the hole is the slip casting hole, and this section slip casting pipe sets up the vertical slip casting hole of twice, and the slip casting hole is the quincunx and arranges, and adjacent subtend slip casting hole interval 15cm, unilateral slip casting hole interval 30cm, slip casting hole seam width 2mm.
S10, secondary high-pressure grouting and pressure stabilization; if the permeability of the soil around the pile is large, the grouting material can permeate upwards or downwards once high-pressure grouting is carried out; although segregation section concrete has defects, grouting permeation gaps are not smooth, grouting materials can permeate into the concrete only when pressure is high, and the difficulty of grouting is determined by the two contradictory aspects. Under the condition, aiming at the characteristic of high permeability of the stratum around the segregation section, a construction process of multiple grouting and hole-by-hole re-injection is adopted; aiming at the characteristic of poor groutability of the segregation section, a high-pressure slurry can be adopted to extrude out of the channel, and a groutability method is added to overcome the grouting difficulty caused by segregation nonuniformity. The secondary high-pressure grouting is that grouting material with water cement ratio of 0.4 is pressed into the pile by a grouting machine, one blast and one stop are carried out when grouting material is pressed in to fully diffuse the grout, grouting is stopped when thick grout emerges from a grout outlet, and the grout outlet is blocked by a gunny bag. And finally, pressing the grouting material with the water-cement ratio of 0.4 into the grouting pipe through a grouting opening, closing a grouting valve to stabilize pressure and reduce pressure for 20-25 min when the grouting pressure is increased to 5MPa, and finishing the grouting operation. The grouting pressure and time can be properly adjusted according to the grouting condition and the grouting material setting time.
S11, performing drilling coring verification on the processing result; when the age reaches the detection requirement (the age is more than 14 days), the completeness of the pile foundation is detected and judged by taking cores from the new open hole, the processed condition of the joint surface is mainly checked, and whether the bearing capacity and the uplift resistance of the pile foundation meet the design requirement is rechecked according to the field detection data.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (10)
1. A disease repairing and treating process for an inclined long pile is characterized by comprising the following steps of,
s1, ultrasonic detection;
s2, coring judgment;
s3, pumping water in the pile;
s4, auxiliary cage cutting;
s5, installing a guide plate;
s6, drilling a grouting hole by a drilling machine;
s7, washing a drilling hole;
s8, performing primary rotary spraying grouting;
s9, sealing the orifice and installing a grouting pipe;
s10, secondary high-pressure grouting and pressure stabilization;
and S11, performing drilling coring verification on the processing result.
2. The disease repairing process for the inclined long pile according to claim 1, wherein in the step S1, ultrasonic detection is performed on the pile foundation, and the position and the length of the defect are preliminarily determined according to the position of the waveform abnormal part from the top surface of the concrete.
3. The disease repairing process for the inclined long pile according to claim 1, wherein in step S2; taking a hole drilling machine to perform coring judgment on each rock-socketed pile one by one, and performing quality analysis on the rock-socketed piles by combining ultrasonic detection reports; and if the rock-socketed pile is judged to have quality defects, performing quality defect treatment construction on the rock-socketed pile.
4. The pile damage repairing process according to claim 1, wherein in step S5, the inclination angle and the inclination direction of the tubular pile are lofted according to pile sinking data, the inclination angle is measured by a guiding rule, and the highest point and the lowest point are compounded according to the height difference of butt welding of the steel pipe pile; then at least two guide plates are arranged perpendicular to the pile body of the steel pipe pile, a plurality of drilled holes are reserved in the guide plates, the axes of the reserved holes of the guide plates need to be on the same straight line and are parallel to the steel pipe pile, and the position of the reserved hole in each guide plate is 40-45cm away from the pile wall of the steel pipe pile; and determining the number of the guide plates according to the length of the hollow hole section of the steel pipe pile.
5. The disease repairing process for the inclined long pile according to claim 4, wherein the number of the preformed holes of the guide plate is 4, an observation port is arranged at the edge of the guide plate, and the center of the observation port is positioned on a vertical bisector of a connecting line of the centers of the two preformed holes.
6. The pile disease repairing process according to claim 1, wherein in step S6, a guide pipe is installed before drilling, the guide pipe is arranged according to the preformed holes on the guide plate, the parallel steel pipe pile is installed on the top surface of the cast-in-place pile, the laitance layer is hammered in by at least 0.5m, after the guide pipe is arranged, the inclination of the guide pipe is rechecked, the top end of the guide pipe is properly adjusted to be parallel to the steel pipe pile, and after the slope of the guide pipe is confirmed to be the same as that of the steel pipe pile, drilling is performed.
7. The disease repairing process for the inclined long pile according to claim 1, wherein in step S7, a high-pressure rotary jet method is adopted to jet a hole-washing medium, and high-pressure rotary jet cutting and cleaning is performed up and down on the defective segment of the bearing layer at each pile end, so that rock debris, residue and muddy water deposited in the hole are discharged from the guide pipe orifice until the return water at all the orifices is gradually clear from turbid color, and the hole-washing operation is stopped after the return water is clear.
8. The disease repairing treatment process of the inclined long pile according to claim 1, wherein a high-pressure double-pipe rotary spraying machine is adopted for spraying the hole washing medium, an alloy drill rod is installed on the high-pressure double-pipe rotary spraying machine, a rotary spraying drill bit is assembled at the end of the drill rod, two high-pressure spraying holes are symmetrically formed in the rotary spraying drill bit, and the hole washing medium is sprayed out of the high-pressure spraying holes.
9. The disease repairing process for the inclined long pile according to claim 1, wherein in the step S8, the grouting slurry with high fluidity and high fluidity is selected, so that the repairing effect on the pile foundation is better than that of common cement slurry; before grouting, a water pressing test is carried out to test the through condition of the grouting holes, namely, firstly pumping a dilute grouting material body to replace clean water and air in the holes until the holes return pure grouting material, and then observing whether the grouting holes are mutually communicated or not, wherein if the holes have the conditions of water return and hole bubbling at different degrees, the through condition in the pile is indicated; if the condition does not exist, the pressure is gradually increased to 5-7 MPa, so that the grouting holes are communicated with each other before high-pressure grouting is carried out, and residues in the pile are removed.
10. The disease repairing process for the inclined long pile according to claim 1, wherein in step S9, a closing plate for closing the opening is made of a circular steel plate and is welded to the sleeve, a circular hole is formed in the closing plate, and the grouting pipe and the exhaust pipe are welded to the closing plate after penetrating through the circular hole; the slip casting pipe is for trompil section slip casting pipe in 1m position below the minimum elevation of pile foundation defect position until 1m position scope more than the highest elevation of defect position, and the hole is the slip casting hole, and this section slip casting pipe sets up the vertical slip casting hole of twice, and the slip casting hole is the quincunx and arranges, and adjacent subtend slip casting hole interval 15cm, unilateral slip casting hole interval 30cm, slip casting hole seam width 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211107664.9A CN115467325A (en) | 2022-09-12 | 2022-09-12 | Disease repairing treatment process for inclined long pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211107664.9A CN115467325A (en) | 2022-09-12 | 2022-09-12 | Disease repairing treatment process for inclined long pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115467325A true CN115467325A (en) | 2022-12-13 |
Family
ID=84332619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211107664.9A Pending CN115467325A (en) | 2022-09-12 | 2022-09-12 | Disease repairing treatment process for inclined long pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115467325A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726590A (en) * | 2020-12-31 | 2021-04-30 | 南通大学 | Method for processing quality defects of cast-in-situ bored pile |
| CN113174992A (en) * | 2021-04-29 | 2021-07-27 | 福建永强岩土股份有限公司 | Comprehensive treatment and reinforcement method for collapse of stratum around marine deep-water inclined pile |
-
2022
- 2022-09-12 CN CN202211107664.9A patent/CN115467325A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726590A (en) * | 2020-12-31 | 2021-04-30 | 南通大学 | Method for processing quality defects of cast-in-situ bored pile |
| CN113174992A (en) * | 2021-04-29 | 2021-07-27 | 福建永强岩土股份有限公司 | Comprehensive treatment and reinforcement method for collapse of stratum around marine deep-water inclined pile |
Non-Patent Citations (1)
| Title |
|---|
| 祝剑敏: "高压注浆技术在灌注桩质量事故处理中的应用", 《资源环境与工程》, vol. 19, no. 2, pages 112 - 114 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107524138B (en) | Construction method of ultra-deep foundation pit underground diaphragm wall | |
| WO2022096024A1 (en) | Construction method for super-long small-diameter hole bored pile | |
| CN110468833B (en) | Water cast-in-situ bored pile construction device for inland waterway and use method thereof | |
| CN105155550B (en) | Construction method for digging deep foundation pit in large-thickness highly weathered sandstone stratum in combined supporting mode | |
| AU2021106928A4 (en) | Construction method for excavation of deep pit with triaxial mixing pile waterstop curtains and rotary bored cast-in-place pile supports | |
| CN105780763A (en) | Construction method of medium-hole vibrating casing wall protection type long spiral cast-in-situ bored pile | |
| CN111335306A (en) | Rapid construction method for deep and thick hard rock section drilled pile | |
| CN108316339A (en) | A kind of construction method of water penetration geology large size arch bridge base | |
| CN110984221A (en) | Construction method for reinforcing end socket at initial end of air shaft and guide wall structure | |
| CN113882375A (en) | Anti-floating anchor rod construction process | |
| CN107338789A (en) | A kind of construction method of down-the-hole percussion triple-pipe high pressure jet grouting stake | |
| CN111455977A (en) | Underground continuous wall construction method | |
| CN114164823A (en) | Pile foundation construction method in high-fill foundation | |
| CN117107749A (en) | Construction method of large-diameter punched bored pile under influence of sea water seepage in sea-filling land-building area | |
| CN112252310A (en) | Method for deep foundation pit waterproof curtain construction by adopting high-pressure jet grouting pile machine | |
| CN106592514A (en) | Construction method of old city riverway piling wall integrated vertical type retaining wall | |
| CN111535305A (en) | Construction method of cast-in-situ bored pile for air well | |
| CN108035357B (en) | Filling pile construction scheme and its funnel | |
| CN115467325A (en) | Disease repairing treatment process for inclined long pile | |
| CN112709252B (en) | Bearing platform construction method in semi-water flooding steep rock slope | |
| CN114250801A (en) | Pipe well and light well point combined dewatering construction method | |
| CN111764380A (en) | Cast-in-situ bored pile construction method | |
| CN113373915B (en) | Method for reinforcing steel column pile structure | |
| CN112982372A (en) | Inner drilling pipe insertion pipe compaction grouting reinforcement method based on pipe gallery bottom plate cavity | |
| CN112962579A (en) | Construction method of underground continuous wall of coastal push-filling area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230921 Address after: 361006 No. 184, Dianqian Fourth Road, Huli District, Xiamen City, Fujian Province Applicant after: XIAMEN JIEHANG ENGINEERING TESTING TECHNOLOGY Co.,Ltd. Applicant after: CCCC Third Aviation Bureau Sixth Engineering (Xiamen) Co.,Ltd. Applicant after: CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Address before: 361006 No. 184, Dianqian Fourth Road, Huli District, Xiamen City, Fujian Province Applicant before: XIAMEN JIEHANG ENGINEERING TESTING TECHNOLOGY Co.,Ltd. Applicant before: CCCC Third Aviation Bureau Sixth Engineering (Xiamen) Co.,Ltd. Applicant before: XIAMEN BRANCH OF CCCC THIRD HARBOR ENGINEERING Co.,Ltd. |
|
| TA01 | Transfer of patent application right |