CN115506338A - Construction process of bridge underwater cast-in-place bored pile - Google Patents
Construction process of bridge underwater cast-in-place bored pile Download PDFInfo
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- CN115506338A CN115506338A CN202211091313.3A CN202211091313A CN115506338A CN 115506338 A CN115506338 A CN 115506338A CN 202211091313 A CN202211091313 A CN 202211091313A CN 115506338 A CN115506338 A CN 115506338A
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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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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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
- E02D5/66—Mould-pipes or other moulds
- E02D5/68—Mould-pipes or other moulds for making bulkheads or elements thereof
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a construction process of a cast-in-situ bored pile in bridge water, which relates to the field of bridge pile foundation manufacturing and aims to solve the problem that a pile foundation below a river water level is easy to damage, and the technical scheme has the following key points: manufacturing a steel sleeve: the steel sleeve comprises a main body section and a steel ladle ring, the steel ladle ring is positioned on the inner side below the main body section, the inner diameter of the steel ladle ring is consistent with that of the main body section, the steel ladle ring can be separated from the main body section, and a guide rail assembly is arranged between the steel ladle ring and the main body section and used for limiting the steel ladle ring from being separated; drilling a hole site; hoisting the steel sleeve; drilling to form a hole; putting down a reinforcement cage; pouring concrete; hoisting and pulling a steel sleeve: and (3) grabbing the upper end of the steel sleeve by using mechanical equipment, rotating along the guide rail assembly and upwards hoisting out the main body section, and leaving the steel ladle ring at the bottom of the cast-in-place pile under the action of concrete to form pile foundation enclosure. The construction process can arrange the steel ladle ring around the pile foundation to protect the pile foundation.
Description
Technical Field
The invention relates to the field of bridge engineering, in particular to a construction process of a cast-in-situ bored pile in bridge water.
Background
The cast-in-situ bored pile is a pile formed by forming a pile hole in foundation soil through mechanical drilling, steel pipe soil extrusion or manual excavation and the like, placing a reinforcement cage in the pile hole and pouring concrete, and is the most common form in deep foundations. Compared with other foundations, the cast-in-situ bored pile is not limited by conditions such as regions, geological conditions, climatic conditions, underground water level, pile diameter, pile body length and the like, has the advantages of high bearing capacity and low construction cost, and can well transmit the load of the upper part to a deep stable rock-soil layer, so that the settlement of the foundation and the uneven settlement of the building are reduced, and therefore, the cast-in-situ bored pile is widely applied to high-rise buildings, heavy workshops, bridge ports, wharfs and engineering in recent years. The construction of the pile bottom or the whole pile body below the water level or the concrete pouring in the place where the water flow can not be closed must be carried out by adopting an underwater pouring method.
The existing pile foundation design generally determines the elevation of a pile top according to factors such as a mapped topographic map, a water level elevation and construction during mapping, and determines the size and the length of a pile diameter according to load size, geological conditions and the like. From the aspects of the bearing capacity of the pile foundation, the strength of the pile foundation and the like, the underwater pile foundation can meet the requirements under the combination of the standard and specified load effect.
Bridge pile foundation when the design, mainly bear the loading effect together at pile foundation inside configuration atress owner muscle and spiral shell stirrup and concrete, interconnect forms a framework of steel reinforcement between the reinforcing bar, atress owner muscle has certain distance apart from pile foundation concrete surface, this part concrete is as the protective layer of main muscle, guarantees that the reinforcing bar does not receive the corruption in the use, guarantees the bearing capacity of reinforcing bar, guarantees the safety of bridge pile foundation structure, guarantees bridge structures's safety. After the built bridge is used for a certain time, the phenomena of pile foundation leakage and pile foundation concrete peeling pile foundation stressed reinforcing steel bar leakage are common in the underwater bridge pile foundation structure, the reinforcing steel bar leakage is corroded, the bearing capacity is reduced, the safety of the bridge structure is influenced, and huge potential safety hazards are formed for vehicles and pedestrians.
And along with the time, the riverbed is easily scoured and cut down, and the underwater pile foundation leaks, the pile foundation concrete is easy to peel off when the cofferdam is scoured by water flow, the stressed steel bars of the pile foundation leak, the bearing capacity of the pile foundation is reduced with light consequences, and the whole bridge is collapsed with heavy consequences. Meanwhile, the appearance is also influenced by the leakage of the pile foundation and the leakage of the stressed main reinforcement.
Therefore, a new solution is needed to solve this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a construction process of a bridge underwater bored pile.
The technical purpose of the invention is realized by the following technical scheme: the construction process of the underwater cast-in-situ bored pile of the bridge is characterized by comprising the following steps of:
step one, manufacturing a steel sleeve: the steel sleeve comprises a main body section and a steel ladle ring, the steel ladle ring is positioned on the inner side below the main body section, the inner diameter of the steel ladle ring is consistent with that of the main body section, the steel ladle ring can be separated from the main body section, and a guide rail assembly is arranged between the steel ladle ring and the main body section and used for limiting the steel ladle ring from being separated;
step two, drilling hole sites;
step three, hoisting the steel sleeve;
drilling to form a hole;
fifthly, placing a reinforcement cage;
step six, pouring concrete;
seventhly, hoisting and pulling the steel sleeve: and (3) grabbing the upper end of the steel sleeve by using mechanical equipment, rotating along the guide rail assembly and upwards hoisting out the main body section, and leaving the steel ladle ring at the bottom of the cast-in-place pile under the action of concrete to form pile foundation enclosure.
By adopting the technical scheme, when the steel sleeve is manufactured, the steel sleeve is arranged into two parts, one part is used as a steel sleeve main body, the steel sleeve is taken out for recycling after the pile foundation is poured, the steel ladle ring is arranged on the inner side below the main body section and is installed on the inner wall of the main body section through the guide rail assembly, the steel ladle ring is not different from the common steel sleeve when the steel sleeve is arranged below, when the steel sleeve is required to be taken out after the pouring is finished, only the main body section needs to be pulled out, and the steel ladle ring part positioned on the inner side below the main body section is left around the pile foundation and is solidified into a whole with the pile foundation.
The invention is further configured to: the guide rail assembly at least comprises a section of L-shaped groove structure and a protrusion which is abutted to the groove and can slide, the groove and the protrusion are respectively arranged on the inner wall of the main body section and the outer wall of the steel ladle ring, the main body section rotates along the groove structure to enable the protrusion to be separated from the groove, and at the moment, the main body section is separated from the steel ladle ring.
Through adopting above-mentioned technical scheme, set up the guide rail set spare into the recess of L type structure and conflict the arch in the recess, because the recess is the L type, when putting the steel sleeve under, the ladle circle can not break away from the main part section, and when the steel sleeve is pulled out to needs, through rotatory main part section earlier, make the vertical section of protruding displacement to the L type, then mention the main part section, just can make the ladle circle break away from, just so can make things convenient for transferring and having extracted of steel sleeve, transfer and can install the ladle circle in place together, and can stay the ladle circle in the foundation ditch fixed with the concrete when mentioning.
The invention is further configured to: the groove is formed in the outer wall of the steel ladle ring, and the protrusion is arranged on the inner wall of the main body section.
Through adopting above-mentioned technical scheme, with the recess setting at ladle circle outer wall, and the arch setting is in the inner wall of main part section, and the setting is for being mentioned after convenient the rotating of main part section like this.
The invention is further configured to: the groove structure penetrates through the upper end face and the lower end face of the steel ladle ring.
Through adopting above-mentioned technical scheme, it is in order can be in the steel ladle circle of easy to assemble in the used repeatedly process to set up the recess and run through the upper and lower terminal surface of steel ladle circle.
The invention is further configured to: the bottom of the groove is provided with a plurality of clamping blocks capable of extending out of the inner wall of the steel ladle ring, and the clamping blocks can be installed on the steel ladle ring in a sliding mode.
Through adopting above-mentioned technical scheme, set up the fixture block at the tank bottom of recess, the fixture block slides and connects in the recess and can stretch out the inner wall of steel package circle, like this when with the fixed shaping of concrete pile foundation, can make the fixture block stretch out the inner wall of steel package circle, during the embedding concrete structure, increase the cohesion of steel package circle and pile foundation.
The invention is further configured to: the thickness of the fixture block is larger than that of the bottom of the groove, one end of the fixture block and the inner wall of the steel ladle ring keep the same plane in a natural state, the other end of the fixture block extends out of the bottom of the groove, the protrusion slides in the groove and pushes against the fixture block to enable the fixture block to extend out of the inner wall of the steel ladle ring when passing through the fixture block, the end face of the fixture block located at the bottom of the groove and the bottom of the groove are located on the same plane, and the other end of the fixture block extends out of the inner wall of the steel ladle ring and is embedded into concrete.
Through adopting above-mentioned technical scheme, set up the tank bottom thickness that thickness is greater than the recess with the fixture block, when not using the steel sleeve, the one end of fixture block is outstanding in the recess, and the other end keeps unanimous with the inner wall of steel clad ring, and when the main part section was extracted, the arch can be through the recess to contradict the fixture block, force the fixture block to stretch out the steel clad ring, the partial embedding concrete that stretches out, thereby increased the cohesion of steel clad ring with the concrete pile foundation.
The invention is further configured to: the clamping block is located at one end of the groove and provided with a cambered surface for the protrusion to abut against.
Through adopting above-mentioned technical scheme, will set up the cambered surface at the fixture block part in the recess and be convenient for exert the effort to the fixture block when protruding contact fixture block, conveniently impel the displacement of fixture block.
The invention is further configured to: the guide rail assembly is at least provided with three groups and is evenly distributed circumferentially.
Through adopting above-mentioned technical scheme, set up the guide rail subassembly three at least evenly distributed on the perisporium of the steel sleeve of main body section, fixed steel ladle circle that can be better, stable in structure.
The invention is further configured to: the fixture blocks are arranged in a plurality of and uniformly distributed.
Through adopting above-mentioned technical scheme, the fixture block sets up a plurality ofly and evenly distributed can make the better combination of steel clad ring and concrete pile foundation, and stability is higher.
The invention is further configured to: the fixture blocks are obliquely arranged relative to the inner wall of the steel ladle ring.
Through adopting above-mentioned technical scheme, be inclination with the inner wall that the fixture block set up relative steel ladle circle, can make the better embedding concrete pile foundation of fixture block, be difficult to receive pressure and released.
In conclusion, the invention has the following beneficial effects: through set up separable ladle circle in the steel sleeve, when putting down the steel sleeve, the ladle circle targets in place with one of them, then concrete placement accomplishes the back, through the mode of changing and extracting, make it mention the steel sleeve along guide rail assembly's direction, can remain the bottom of concrete pile foundation with the ladle circle like this, form the protection to concrete pile foundation, no matter the impact of flowing water, when still the riverbed exposes, can both play better guard action to the bridge pile foundation, and the steel sleeve of retrieving can also the reinstallation ladle circle, carry out used repeatedly.
Drawings
FIG. 1 is a state view of the steel sleeve of the present invention when not extracted;
FIG. 2 is a state view of the body segment of the present invention prior to removal from the ladle collar;
fig. 3 shows the body segment of the present invention in a state disengaged from the steel band.
In the figure: 1. a main body section; 2. a steel ladle ring; 3. a pile foundation; 4. a groove; 5. a protrusion; 6. and (7) clamping blocks.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
A construction process of a bridge underwater cast-in-place pile comprises the following steps:
step one, manufacturing a steel sleeve: the steel sleeve comprises a main body section and a steel ladle ring, the steel ladle ring is positioned on the inner side below the main body section, the inner diameter of the steel ladle ring is consistent with that of the main body section, the steel ladle ring can be separated from the main body section, and a guide rail assembly is arranged between the steel ladle ring and the main body section and used for limiting the steel ladle ring from being separated; step two, drilling hole sites; step three, hoisting the steel sleeve; drilling to form a hole; fifthly, placing a reinforcement cage; step six, pouring concrete; step seven, hoisting and pulling the steel sleeve: and (3) grabbing the upper end of the steel sleeve by using mechanical equipment, rotating along the guide rail assembly and upwards hoisting out the main body section, and leaving the steel ladle ring at the bottom of the cast-in-place pile under the action of concrete to form pile foundation enclosure.
When the preparation steel sleeve, set up the steel sleeve into two parts, partly regard as the steel sleeve main part, take out after accomplishing the pile foundation and pour and recycle, and inboard the below at the main part sets up the ladle circle, the ladle circle passes through guide rail set spare and installs on the inner wall of main part, it is not different with ordinary steel sleeve when the steel sleeve of below, when need take out the steel sleeve after pouring the completion, only need pull out the main part, and the ladle circle portion that is located main part below inboard then stays around the pile foundation and solidifies integratively with the pile foundation, later stage rivers are when assaulting the pile foundation like this, the ladle circle can effectively protect, and descend when river water level, the part that exposes also is the ladle circle, can not make inside concrete structure table expose, the life of bridge pile foundation has been increased.
The guide rail assembly at least comprises a section of groove structure which is arranged in an L shape and a protrusion which is abutted in the groove and can slide, the groove and the protrusion are respectively arranged on the inner wall of the main body section and the outer wall of the steel ladle ring, the main body section rotates along the groove structure to enable the protrusion to be separated from the groove, and at the moment, the main body section is separated from the steel ladle ring. Set up the recess of guide rail set spare into L type structure and conflict the arch in the recess, because the recess is the L type, when putting down the steel sleeve, the ladle circle can not break away from the main part section, and when the steel sleeve is pulled out to needs, through rotatory main part section earlier, make the vertical section of protruding displacement to the L type, then mention the main part section, just can make the ladle circle break away from, just so can make things convenient for transferring and having extracted of steel sleeve, transfer and can install the ladle circle in place together, and can stay the ladle circle in the foundation ditch fixed with the concrete when mentioning.
The groove is arranged on the outer wall of the steel ladle ring, and the bulge is arranged on the inner wall of the main body section. The groove is arranged on the outer wall of the steel ladle ring, and the bulge is arranged on the inner wall of the main body section, so that the main body section can be conveniently lifted after being rotated. The groove structure penetrates through the upper end face and the lower end face of the steel ladle ring. The groove is arranged to penetrate through the upper end face and the lower end face of the steel ladle ring, so that the steel ladle ring can be conveniently installed in the repeated use process. The bottom of the groove is provided with a plurality of clamping blocks which can extend out of the inner wall of the steel ladle ring, and the clamping blocks can be arranged on the steel ladle ring in a sliding manner. Set up the fixture block at the tank bottom of recess, the fixture block slides and connects in the recess and can stretch out the inner wall of steel ladle circle, when with the fixed shaping of concrete pile foundation, can make the fixture block stretch out the inner wall of steel ladle circle like this, during the embedding concrete structure, increase the cohesion of steel ladle circle and pile foundation.
The thickness of the fixture block is larger than that of the bottom of the groove, one end of the fixture block and the inner wall of the ladle ring keep the same plane in a natural state, the other end of the fixture block extends out of the bottom of the groove, the protrusion slides in the groove and pushes against the fixture block when passing through the fixture block, so that the fixture block extends out of the inner wall of the ladle ring, the end face of the fixture block located at the bottom of the groove and the bottom of the groove are located in the same plane, and the other end of the fixture block extends out of the inner wall of the ladle ring and is embedded into concrete. Set up the tank bottom thickness that thickness is greater than the recess with the fixture block, when not using the steel sleeve, the one end of fixture block is outstanding in the recess, and the other end keeps unanimous with the inner wall of steel ladle circle, and when the main part section was extracted, the arch can be through the recess to contradict the fixture block, force the fixture block and stretch out the steel ladle circle, the partial embedding concrete of protrusion, thereby increased the cohesion of steel ladle circle and concrete pile foundation. The clamping block is positioned at one end of the groove and provided with a cambered surface for the protrusion to abut against. The cambered surface is arranged on the clamping block part in the groove, so that an acting force is applied to the clamping block when the protrusion contacts the clamping block conveniently, and the displacement of the clamping block is facilitated to be pushed. The guide rail assembly is at least provided with three groups and is evenly distributed circumferentially. The guide rail assembly is arranged on the circumferential wall of the steel sleeve of the main body section, at least three groups of guide rail assemblies are uniformly distributed on the circumferential wall, and the steel ladle ring can be better fixed, and the structure is stable. The fixture blocks are arranged in a plurality and are uniformly distributed. The fixture block sets up a plurality ofly and evenly distributed can make better combination of steel clad ring and concrete pile foundation, and stability is higher. The fixture block is obliquely arranged relative to the inner wall of the steel ladle ring. The inner wall of the clamping block which is arranged relative to the steel ladle ring is inclined, so that the clamping block can be embedded into a concrete pile foundation better, and the clamping block is not easy to be pushed out by pressure.
Through set up separable ladle circle in the steel sleeve, when putting down the steel sleeve, the ladle circle targets in place with one of them, then concrete placement accomplishes the back, through the mode of changing and extracting, make it mention the steel sleeve along guide rail assembly's direction, can remain the bottom of concrete pile foundation with the ladle circle like this, form the protection to concrete pile foundation, no matter the impact of flowing water, when still the riverbed exposes, can both play better guard action to the bridge pile foundation, and the steel sleeve of retrieving can also the reinstallation ladle circle, carry out used repeatedly.
For better understanding of the technical solution, reference may be made to the structures of fig. 1 to 3, where fig. 1 is a state when a steel sleeve is placed in a hole of a foundation, and at this time, the main body section 1 and the steel ladle ring 2 are not separated, and are of an integral structure, then a concrete pile foundation 3 is poured therein, and after the concrete pile foundation 3 is poured, the main body section 1 needs to be pulled out within one hour, and in the process of pulling out, the main body section 1 is rotated first, so that the protrusion 5 moves horizontally in the L-shaped groove 4, and then the main body section is pulled out vertically, and at this time, the protrusion moves vertically and upwardly in the L-shaped groove 4, and in the moving process, as shown in fig. 2 and 3, the protrusion 5 abuts against the fixture block 6, so that the fixture block 6 extends out of the steel ladle ring 2, so that one end of the fixture block 6 is embedded into the structure of the pile foundation 3, and so that the firm bonding degree of the steel ladle ring 2 and the pile foundation 3 can be increased, and thus the main body section 1 is pulled out, and the steel ladle ring 2 remains at the bottom of the steel pile foundation 3 to protect the pile foundation 3; this embodiment is not described in detail for other limitations within the claims, but does not affect the clarity of presentation of the claimed solution.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and all technical solutions that belong to the idea of the present invention belong to the scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. The construction process of the underwater cast-in-situ bored pile of the bridge is characterized by comprising the following steps of:
step one, manufacturing a steel sleeve: the steel sleeve comprises a main body section and a steel ladle ring, the steel ladle ring is positioned on the inner side below the main body section, the inner diameter of the steel ladle ring is consistent with that of the main body section, the steel ladle ring can be separated from the main body section, and a guide rail assembly is arranged between the steel ladle ring and the main body section and used for limiting the steel ladle ring from being separated;
step two, drilling hole sites;
step three, hoisting the steel sleeve;
drilling to form a hole;
fifthly, placing a reinforcement cage;
step six, pouring concrete;
seventhly, hoisting and pulling the steel sleeve: and (3) grabbing the upper end of the steel sleeve by using mechanical equipment, rotating along the guide rail assembly and upwards hoisting out the main body section, and leaving the steel ladle ring at the bottom of the cast-in-place pile under the action of concrete to form pile foundation enclosure.
2. The construction process of the cast-in-situ bored pile in bridge water according to claim 1, characterized in that: the guide rail assembly at least comprises a section of groove structure which is arranged in an L shape and a protrusion which is abutted in the groove and can slide, the groove and the protrusion are respectively arranged on the inner wall of the main body section and the outer wall of the steel ladle ring, the main body section rotates along the groove structure to enable the protrusion to be separated from the groove, and at the moment, the main body section is separated from the steel ladle ring.
3. The construction process of the cast-in-situ bored pile in bridge water according to claim 2, characterized in that: the groove is arranged on the outer wall of the steel ladle ring, and the protrusion is arranged on the inner wall of the main body section.
4. The construction process of the cast-in-situ bored pile in bridge water according to claim 3, characterized in that: the groove structure penetrates through the upper end face and the lower end face of the steel ladle ring.
5. The construction process of the cast-in-situ bored pile in bridge water according to claim 3, characterized in that: the bottom of the groove is provided with a plurality of clamping blocks capable of extending out of the inner wall of the steel ladle ring, and the clamping blocks can be installed on the steel ladle ring in a sliding mode.
6. The construction process of the cast-in-situ bored pile in bridge water according to claim 5, characterized in that: the thickness of the fixture block is larger than that of the bottom of the groove, one end of the fixture block and the inner wall of the ladle ring keep on the same plane in a natural state, the other end of the fixture block extends out of the bottom of the groove, the protrusion slides in the groove and abuts against the fixture block to enable the fixture block to extend out of the inner wall of the ladle ring when passing through the fixture block, the end face of the fixture block located at the bottom of the groove and the bottom of the groove are located on the same plane, and the other end of the fixture block extends out of the inner wall of the ladle ring and is embedded into concrete.
7. The construction process of the cast-in-situ bored pile in bridge water according to claim 6, characterized in that: one end of the clamping block, which is positioned in the groove, is provided with a cambered surface for the protrusion to abut against.
8. The construction process of the cast-in-situ bored pile in bridge water according to claim 1, characterized in that: the guide rail assembly is at least provided with three groups and is evenly distributed circumferentially.
9. The construction process of the cast-in-situ bored pile in bridge water according to claim 5, characterized in that: the fixture blocks are arranged in a plurality and are uniformly distributed.
10. The construction process of the cast-in-situ bored pile in bridge water according to claim 6, characterized in that: the fixture blocks are obliquely arranged relative to the inner wall of the steel ladle ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211091313.3A CN115506338A (en) | 2022-09-07 | 2022-09-07 | Construction process of bridge underwater cast-in-place bored pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211091313.3A CN115506338A (en) | 2022-09-07 | 2022-09-07 | Construction process of bridge underwater cast-in-place bored pile |
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| Publication Number | Publication Date |
|---|---|
| CN115506338A true CN115506338A (en) | 2022-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211091313.3A Pending CN115506338A (en) | 2022-09-07 | 2022-09-07 | Construction process of bridge underwater cast-in-place bored pile |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10219680A (en) * | 1997-02-10 | 1998-08-18 | Nishimatsu Constr Co Ltd | Work execution method of cast-in-place concrete pile |
| JP2010007397A (en) * | 2008-06-28 | 2010-01-14 | 索郎 ▲廣▼▲瀬▼ | Pile head treating method and pile head treating apparatus |
| CN104947654A (en) * | 2015-07-01 | 2015-09-30 | 杭州江润科技有限公司 | Complicated water area inclined rock face large-diameter cast-in-place pile and construction method |
| CN110144885A (en) * | 2019-04-09 | 2019-08-20 | 中铁大桥局集团有限公司 | A kind of three-stage large diameter bored pile structure |
| CN111206575A (en) * | 2020-01-14 | 2020-05-29 | 海达建设集团有限公司 | Construction method of long spiral pressure-grouting pile |
| CN112227357A (en) * | 2020-08-31 | 2021-01-15 | 重庆建工第九建设有限公司 | Construction method for double steel pile casings of rotary excavation pile foundation |
| CN212896448U (en) * | 2020-04-14 | 2021-04-06 | 中国电建集团贵阳勘测设计研究院有限公司 | Scour prevention is bridge pile foundation structure under water |
| WO2021109144A1 (en) * | 2019-12-06 | 2021-06-10 | 邹胜斌 | Modular intelligent dado cast-in-place pile and construction process therefor |
| CN113605383A (en) * | 2021-07-26 | 2021-11-05 | 天津深基工程有限公司 | A steel protects a section of thick bamboo is transferred in merogenesis for bored concrete pile construction |
-
2022
- 2022-09-07 CN CN202211091313.3A patent/CN115506338A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10219680A (en) * | 1997-02-10 | 1998-08-18 | Nishimatsu Constr Co Ltd | Work execution method of cast-in-place concrete pile |
| JP2010007397A (en) * | 2008-06-28 | 2010-01-14 | 索郎 ▲廣▼▲瀬▼ | Pile head treating method and pile head treating apparatus |
| CN104947654A (en) * | 2015-07-01 | 2015-09-30 | 杭州江润科技有限公司 | Complicated water area inclined rock face large-diameter cast-in-place pile and construction method |
| CN110144885A (en) * | 2019-04-09 | 2019-08-20 | 中铁大桥局集团有限公司 | A kind of three-stage large diameter bored pile structure |
| WO2021109144A1 (en) * | 2019-12-06 | 2021-06-10 | 邹胜斌 | Modular intelligent dado cast-in-place pile and construction process therefor |
| CN111206575A (en) * | 2020-01-14 | 2020-05-29 | 海达建设集团有限公司 | Construction method of long spiral pressure-grouting pile |
| CN212896448U (en) * | 2020-04-14 | 2021-04-06 | 中国电建集团贵阳勘测设计研究院有限公司 | Scour prevention is bridge pile foundation structure under water |
| CN112227357A (en) * | 2020-08-31 | 2021-01-15 | 重庆建工第九建设有限公司 | Construction method for double steel pile casings of rotary excavation pile foundation |
| CN113605383A (en) * | 2021-07-26 | 2021-11-05 | 天津深基工程有限公司 | A steel protects a section of thick bamboo is transferred in merogenesis for bored concrete pile construction |
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