CN113774906A - Construction process for implanting composite-section hollow pile by filling mortar into expanded lead hole - Google Patents
Construction process for implanting composite-section hollow pile by filling mortar into expanded lead hole Download PDFInfo
- Publication number
- CN113774906A CN113774906A CN202110864532.XA CN202110864532A CN113774906A CN 113774906 A CN113774906 A CN 113774906A CN 202110864532 A CN202110864532 A CN 202110864532A CN 113774906 A CN113774906 A CN 113774906A
- Authority
- CN
- China
- Prior art keywords
- pile
- composite
- section
- filling
- hole
- 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
- E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
-
- 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/72—Pile shoes
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (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 provides a construction process for implanting a composite cross-section hollow pile by filling mortar into a reaming hole, wherein the reaming hole penetrates through a strongly weathered and moderately weathered rock hard rock-soil layer, filling mortar is implanted into the hollow pile, and the annular gap is filled with excitation and soil discharge to form a tubular pile inner ring and filling outer ring composite cross-section hollow pile. The large-diameter composite section hollow pile is formed by the cooperation of the expanded guide holes and the large-diameter hollow pile, the problems that the section of the precast pile is small and the stability is insufficient, the setting depth and the bearing capacity of the end bearing condition are limited are solved, the method can be applied to the bridge abutment pile foundation with heavy load and complex properties, and the application prospect is very wide.
Description
Technical Field
The invention belongs to the construction field of pile foundation engineering and foundation treatment, and particularly relates to a hollow pile with a composite section of an inner ring and an outer ring of a tubular pile, which is formed by filling mortar into a drilling machine expanding guide hole and filling a prefabricated tubular pile guide hole annular gap with slurry (mortar) discharged. The engineering application field is very wide.
Background
The precast tubular pile and the pile splicing technology thereof conform to the characteristics of modern intensive assembly construction, but the precast tubular pile is difficult to penetrate through weathered rocks and other hard rock-soil layers, and the pile sinking arrangement has serious soil discharge effect and other environmental adverse factors, thereby seriously restricting the engineering application.
In recent years, in high-grade highway construction, including a new round of highway widening and reconstruction project, the land for public roads is limited, the soil source of the roadbed is deficient, and the pile plate roadbed structure becomes a new roadbed form. The pile slab roadbed structure adopts a prefabricated pipe pile foundation, a pipe pile component assembled upright post and a prefabricated panel assembled driving pavement, and the construction intensification degree (speed, quality and the like) is obviously improved. However, when the precast tubular pile is encountered in hard rock-soil layers such as strongly weathered rocks, moderately weathered rocks and hard pebble gravelly soil, the pile sinking of the precast tubular pile is difficult. The high-power large-scale pile sinking equipment not only puts higher requirements on construction sites, but also aggravates the environmental influences such as the soil discharge effect, the noise and the like, and is sometimes even difficult to implement. At present, a small hole drilling and pre-leading technology is mostly adopted as a method for energy dissipation of precast pile sinking. On one hand, the power of pile sinking equipment can be reduced; on the other hand, the method is beneficial to accurate positioning of the plane of the foundation pile. However, when the energy dissipation method is applied to a hard rock soil layer such as a moderately weathered rock, the expected effect is difficult to achieve by the small lead hole energy dissipation method.
In view of the existing problems, the invention provides a construction process for implanting the composite section hollow pile of the precast tubular pile by expanding the guide hole, pouring and filling mortar and an application form thereof, and relevant documents, reports and regulations are not found. The cross section size effect of the prefabricated tubular pile composite cross section hollow pile matched with the expanding guide holes, the full cross section (medium weathered rock) rock embedding or (hard rock surface) supporting of the pile end and the like are achieved, the bearing capacity and stability of the foundation pile are remarkably improved, and the construction mode of the assembled upright post of the pile slab roadbed structure is kept. The expanding and guiding hole is matched with the large-diameter precast tubular pile to form a large-diameter hollow pile with a composite section, and the large-diameter hollow pile can also be used for a bridge abutment pile foundation.
Disclosure of Invention
The invention provides a composite section hollow pile for expanding a lead hole, filling and implanting filling mortar and a construction process thereof. The method comprises the following steps: drilling machine expands the guide hole, pours flowing solidified mortar, seals the tubular pile, injects mortar, and discharges the mortar to fill the annular gap between the tubular pile and the guide hole, so as to form the hollow pile with the composite cross section of the inner ring and the outer ring of the tubular pile.
The specific construction process comprises the following steps: measuring and paying off, and determining a pile position; expanding a lead hole of the rotary drilling rig; checking the quality of the formed hole; installing a positioning device; pouring mortar into the lead hole; filling mortar is implanted into the tubular pile; accurate positioning; and (5) naturally maintaining and recovering equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a composite-section hollow pile with expanded leading hole filled with filling mortar is composed of a strong weathered and medium weathered hard rock-soil layer, a hollow pile filled with filling mortar, and a composite-section hollow pile with inner and outer tubular piles.
The further technology of the invention is as follows:
preferably, when the load of the pile top is small and the property is single, a hollow pile PHC-A or AB 500-600 low-strength small-diameter hollow pile is selected, the matched expanding hole DB is 700 mm-800 mm and is used as a pile foundation of a pile slab roadbed structure, and the section of the PHC pile is stably controlled by the upright post of the assembled tubular pile component.
Preferably, when the load of the pile top is heavier and the pile body is subjected to bending tension, the PHC B or C800-plus-1000 high-strength bending-tension large-diameter hollow pile is selected and matched with the large-diameter expanded lead hole hollow pile with the expanded lead hole DB larger than 1000mm to serve as the foundation of the bridge abutment pile.
Preferably, the pile top of the composite hollow pile is embedded into the bearing platform by 30-50 cm, the outer ring of the filling mortar is poured by a prefabricated mold, an annular notch with the depth of 3-5 cm is formed, and the notches are distributed at intervals along the pile body of the composite hollow pile.
Preferably, the outer core (mortar) ring sleeve is additionally provided with a circular stirrup restraint.
Preferably, filling mortar is implanted into the hollow pile in a suspending manner to form a pile body variable-section pile, a single-section tubular pile is implanted to form an upper composite-section hollow tubular pile, and a lower plain mortar pile variable-section pile is formed.
The large-diameter composite section hollow pile is formed by the cooperation of the expanded guide holes and the large-diameter hollow pile, the problems that the section of the precast pile is small and the stability is insufficient, the setting depth and the bearing capacity of the end bearing condition are limited are solved, the method can be applied to the bridge abutment pile foundation with heavy load and complex properties, and the application prospect is very wide.
Drawings
FIG. 1 is a schematic diagram of a composite cross-section hollow pile with an inner ring of a precast tubular pile and an outer ring of filled mortar and a construction process thereof.
Fig. 2 is a top view of the composite section hollow pile of the present invention.
FIG. 3 shows the application characteristics of the composite section hollow pile engineering of the present invention.
Fig. 4 is a close-up view of an engineering application E of the present invention.
Fig. 5 is an enlarged view of a portion of the present invention at engineering application F.
1, prefabricating a hollow pipe pile; 2, filling a mortar ring sleeve; 3, pipe pile joints; 4, sealing the pile shoe; 5, bearing platform; 6, anchoring the steel bars; 7, connecting reinforcing steel bars on the pile top; 8-inner core stirrup and 9-outer core stirrup.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
The invention provides a composite section hollow pile implanted with expanded lead holes and filled mortar and a construction process thereof, which meet the intensive construction development trend of the modern civil engineering industry. The main technical scheme is as follows:
as shown in the attached drawing 1, mortar is poured into the expanding and guiding holes, the mortar poured into the hole for embedding the sealed precast tubular pile fills annular gaps between the expanding and guiding holes and the tubular pile, the pile body mortar material strength is fully exerted, the filling mortar quality is improved, and the soil contact surface of the expanding and guiding hole pile is obviously hardened.
As shown in the accompanying drawings 2 and 3(A), when the pile top load is small and the property is single, a prefabricated pipe pile PHC-A or AB 500-plus 600 low-strength small-diameter prefabricated pipe pile is preferably selected, the cooperative expansion hole DB is 700 mm-800 mm and can be used as a pile foundation of a pile slab roadbed structure, and the section of the PHC pile can be stably controlled by an upright post of an assembled pipe pile component;
on the contrary, as shown in the accompanying drawings 2 and 3(B), when the pile top load is heavy and the pile body is pulled in a bending-resistant manner, the PHC B or C800-.
As shown in the accompanying drawings 2 and 3(C), the precast tubular pile can also be implanted with filling mortar in a suspending manner to form a pile body variable-section pile, and is suitable for implanting a large-diameter tubular pile when a deep-long expanded lead hole is formed, and implanting a single-section tubular pile to form a variable-section pile with an upper composite-section hollow tubular pile (bearing compression and bending resistance) and a lower plain mortar pile (bearing compression).
The invention is further explained by combining the abstract attached drawing and the attached drawing, and the concrete implementation scheme of the typical engineering application example of the invention is as follows:
embodiment example I-roadbed pile plate structure
The highway is located in the hilly valley area in the middle of Anhui, has thinner natural sediments along the highway, and mainly comprises argillaceous sandstone and tuff, and the downward lying (fully) strongly weathered rock and moderately weathered rock. Because the roadbed filled soil source is deficient, the roadbed is difficult to land acquisition, and the construction period of the project is short, the roadbed pile plate structure is adopted after the demonstration, and the accumulated mileage reaches 60 km.
Because the length of the pile in the surface deposited soil and the (total) strongly weathered layer is relatively short, the pile-column system based on the pile-plate structure is stable, the precast pile needs to enter the moderately weathered rock and even pass through the medium weathered layer, and the precast pile is difficult to directly set. According to the invention, the roadbed pile plate structure pile foundation is drilled and expanded with a rotary drill (DB is 700mm) to the depth of the medium weathering rock embedded rock or the surface of the weak weathering hard rock, a precast tubular pile (DP is 500mm) is implanted after filling of the filling mortar, and the annular gap is filled with the excitation discharge (mortar) slurry to form the composite section hollow pile.
Composite section hollow pile: the pre-hole solves the problem of difficult construction and workability of pile sinking of moderately weathered rocks; the size of the positive section of the hollow pile with the expanded guide hole, the filling and grouting composite section is increased, and the problem of stability of a pile system is solved. In addition, the volume of the annular clearance between the tubular pile and the expanded lead hole is combined with the filling coefficient, and the volume of the poured mortar is controlled, so that the poured mortar is called as filling mortar; the annular gap size is matched with the nominal upper limit particle size of the filled mortar aggregate, the fluidity working performance of the mortar aggregate can be controlled, and the pile sinking difficulty of mortar discharge (mortar) is reduced.
Assembling the column components: according to the attached figures 2 and 3(A) of the specification, after the pipe pile is implanted, when the filling mortar is hardened to reach the required age, the upright post of the pipe pile is assembled, and the upper driving pavement is installed. The hardening age of the filling mortar is close to the resting period after the arrangement of the slurry-discharging precast pile, and the basic characteristics of intensive and rapid construction of the pile slab roadbed are not influenced.
Quality control level: according to the attached figures 2 and 3(A) of the specification, the full-length implantation shock excitation setting effect of the sealing tubular pile is similar to that of vibration, and the quality of filling mortar in an annular gap is obviously improved compared with that of a common cast-in-place pile; the precast tubular pile and the pile splicing technology thereof are intensive and have obvious advantages of high quality.
Embodiment example II bridge pier foundation
Based on the engineering geological conditions, the bridge abutment foundation pile also adopts the composite section hollow pile implanted with the expanding guide hole and filled with the mortar.
According to the attached figures 2 and 3(B) of the specification, the pier pile foundation composite section hollow pile and the quality control characteristics thereof are the same as the pile slab roadbed. Because the pier foundation load is heavier, and there is the foundation pile stability problem, the relative oversize of the positive cross-section of compound cross-section hollow tube pile. For example, the precast tubular pile DP is 800mm, and the diameter of the reaming hole may be DB >1000mm to satisfy the load level and load property of the bridge abutment foundation.
Hollow pile and bearing platform connection structure (inner core): according to the specification and the attached figure 4, the pile top of the hollow pile with the composite cross section of the pier pile foundation is embedded into a bearing platform by 30-50 cm, the pile top is provided with a supporting plate and is placed into a steel bar framework, anchoring steel bars 6 and pile top connecting steel bars 7 are uniformly arranged along the circumference of the tubular pile, stirrups 8 are vertically arranged at equal intervals, the anchoring steel bars 6 and the pile top connecting steel bars 7 are firmly welded with the supporting plate, the size of the supporting plate is slightly smaller than the inner diameter of the tubular pile, the anchoring length of the anchoring steel bars 6 is taken according to the current specification, and the inner core of the tubular pile is filled with C50 micro-expansion concrete.
Hollow pile and bearing platform connection structure (outer core): according to the attached drawings of 5(a) and (b) of the specification, the pile top of the hollow pile with the composite section faces downwards 30-50 cm, the outer core mortar ring sleeve is poured by adopting a prefabricated mould, annular notches with the depth of 3-5 cm are formed in the outer core pile body, and the notches are distributed at intervals along the composite hollow pile body, so that the construction pouring integrity can be improved, the connection between the composite pile and the bearing platform is more effective, and the strength is higher compared with the traditional foundation pile embedded pouring bearing platform; meanwhile, the circular stirrups 9 are additionally arranged on the outer core of the large-diameter composite-section hollow pile, so that the bonding strength of the outer core can be improved, the shear resistance of the oblique section of the pile top of the composite-section hollow pile can be improved, and the upper horizontal load can be effectively transmitted to the pile body.
Tubular pile suspension variable cross section hollow pile: due to the fact that the load level is higher and the foundation pile is required to be stable, the diameter DB of the expansion hole is larger, and the underwater mortar pouring quality is easy to control; the depth of the expanded lead hole is deep, the cost of the large-diameter tubular pile is increased, and when the pile splicing process is complex, the suspension variable cross-section hollow pile can be adopted. According to the specification attached figure 3(C), the composite hollow tubular pile with the upper composite section and the composite pile with the lower variable section of the plain mortar pile can be formed by suspension implantation according to the upper limit value of the reference length of the large-diameter tubular pile, the load transfer characteristic that the bending tensile stress of the lower part of the bridge foundation pile is very small is met, in addition, the pile splicing process can be cancelled while the bearing capacity and the stability requirement are met, and the intensification degree is obviously improved.
In the above embodiment, the compound mortar mixing ratio and the physical and mechanical property indexes adopted in the construction process of filling mortar into the expanded pilot holes and implanting the composite cross-section hollow pile are shown in the following table.
The above detailed description of the present invention with reference to the embodiment of the present invention, which is made for the purpose of illustration and not limitation, and the construction process of the present invention, is provided for the purpose of composite cross-section hollow pile by grouting filling mortar, and it should be noted that: it will be apparent to those skilled in the art that several embodiments can be made without departing from the spirit and scope of the invention, and that various changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (7)
1. A construction process for implanting composite-section hollow piles by filling mortar into expanded lead holes is characterized in that: the expanding guide hole penetrates through a strongly weathered and moderately weathered hard rock-soil layer, filling mortar is implanted into the hollow pile, and excitation dumping is filled into an annular gap to form a tubular pile inner ring and filling outer ring composite section hollow pile, and the method specifically comprises the following steps:
(1) measuring and paying off, determining a pile position, leveling a field, then entering and parking the rotary drilling sleeve integrated drilling machine, expanding a hole to a designed aperture and a pile bottom elevation, wherein the outer diameter of the hole is larger than that of the prefabricated pipe pile;
(2) the rotary drilling rig expands the pilot hole, its characteristic is in the course of pore-forming, the top surface of steel protects the tube and connects with rotary drilling rig through the flange, the rotary pressing of the rig drives the steel and protects the tube to rotate downward and enter the soil; meanwhile, the drilling machine carries out soil taking operation in the steel casing, and the taken soil is conveyed out of the drill hole through a suction pump; and enlarging a guide hole relative to the diameter of the precast tubular pile, entering the medium weathering rock or penetrating to the surface of the lower lying hard rock, sealing the whole section of the pile end of the hollow pile with the composite section, and forming a rock-socketed pile in the medium weathering rock or forming a support pile on the surface of the hard rock.
(3) After the hole leading is finished, the quality of formed holes is checked;
(4) the drilling machine is shifted, the positioning device is lowered into the drill hole by a crane, and the outer edge of the positioning device is lapped on the top surface of the steel casing;
(5) placing a grouting guide pipe in the drill hole, and grouting mortar into the drill hole to a designed elevation through the guide pipe;
(6) filling mortar is implanted into the pipe pile, and the ring-shaped gap is filled by exciting and dumping, so that a composite-section hollow pile with a prefabricated pipe pile inner ring and a filling mortar outer ring is formed;
(7) the pile position is locally and accurately adjusted through a positioning device;
(8) and (5) carrying out natural maintenance, controlling the maintenance time, recovering the positioning device, and then pulling out the steel casing.
2. The construction process for implanting the composite-section hollow pile by filling the expanded hole with the filling mortar according to claim 1, wherein the construction process comprises the following steps: when the pile top load is small and the property is single, a hollow pile PHC-A or AB 500-doped 600 low-strength small-diameter hollow pile is selected, a matched expanding lead hole DB is 700-800 mm and serves as a pile foundation of a pile slab roadbed structure, and the section of the PHC pile is stably controlled by the assembled tubular pile component upright post.
3. The construction process for implanting the composite-section hollow pile by filling the expanded hole with the filling mortar according to claim 1, wherein the construction process comprises the following steps: when the load of the pile top is heavier and the pile body is pulled in a bending-resistant manner, the PHC B or C800 plus 1000 high-strength bending-resistant large-diameter hollow pile is selected and matched with the large-diameter expanded lead hole hollow pile with the expanded lead hole DB larger than 1000mm to serve as the pile foundation of the bridge abutment.
4. The construction process for implanting the composite-section hollow pile by filling the expanded hole with the filling mortar according to claim 1, wherein the construction process comprises the following steps: the composite hollow pile top is embedded into the bearing platform by 30-50 cm, the outer ring of the filling mortar is poured by adopting a prefabricated mold, an annular notch with the depth of 3-5 cm is formed, the notches are distributed at intervals along the composite hollow pile body, the dowel bars are placed in the inner core of the tubular pile, concrete is poured, and the connection construction integrity and the internal force transmissibility of the bridge abutment pile foundation and the bearing platform are obviously enhanced.
5. The construction process for implanting the composite-section hollow pile by filling the expanded hole with the filling mortar according to claim 4, wherein the construction process comprises the following steps: the outer core ring sleeve is additionally provided with a circular stirrup restraint.
6. The construction process for implanting the composite-section hollow pile by filling the expanded hole with the filling mortar according to claim 1, wherein the construction process comprises the following steps: filling mortar is implanted into the hollow pile in a suspended mode to form a pile body variable-section pile, a single-section pipe pile is implanted to form an upper composite-section hollow pipe pile, and a lower plain mortar pile variable-section pile is formed.
7. The construction process for implanting the composite-section hollow pile by filling the expanded hole with the filling mortar according to claim 1, wherein the construction process comprises the following steps: the performance indexes of the composite mortar used in the pile planting process comprise that the composite mortar material 425 is prepared from cement, II-grade fly ash and sand in a mixing ratio of 1: 0.7: 7-1: 0.6: 3, the truncated cone fluidity is more than or equal to 200mm, the bleeding rate is 0 percent, and the 28d compressive strength is more than or equal to 25 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110864532.XA CN113774906A (en) | 2021-07-29 | 2021-07-29 | Construction process for implanting composite-section hollow pile by filling mortar into expanded lead hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110864532.XA CN113774906A (en) | 2021-07-29 | 2021-07-29 | Construction process for implanting composite-section hollow pile by filling mortar into expanded lead hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113774906A true CN113774906A (en) | 2021-12-10 |
Family
ID=78836508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110864532.XA Pending CN113774906A (en) | 2021-07-29 | 2021-07-29 | Construction process for implanting composite-section hollow pile by filling mortar into expanded lead hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113774906A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482029A (en) * | 2022-02-14 | 2022-05-13 | 安徽省交通规划设计研究总院股份有限公司 | Hole-expanding implanted slurry rock consolidation root solid-expanding prefabricated pile |
| CN114482151A (en) * | 2022-02-14 | 2022-05-13 | 安徽省交通规划设计研究总院股份有限公司 | Internal force testing device for outer ring of hole-expanding grouting implanted precast tubular pile and construction method |
| CN114482013A (en) * | 2022-02-14 | 2022-05-13 | 安徽省交通规划设计研究总院股份有限公司 | Suspended rock-socketed composite pile structure for hole-expanding precast pile and construction method of suspended rock-socketed composite pile structure |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297717A (en) * | 2015-10-30 | 2016-02-03 | 周同和 | Composite foundation pile with lower portion enlarged diameter section and construction method of composite foundation pile |
| CN105672307A (en) * | 2016-01-12 | 2016-06-15 | 四川华西管桩工程有限公司 | Expanded-base combination end pile bearing foundation |
| JP2016223208A (en) * | 2015-06-02 | 2016-12-28 | 株式会社トーヨーアサノ | Pile foundation structure |
| CN106351222A (en) * | 2016-08-30 | 2017-01-25 | 中国建筑西南勘察设计研究院有限公司 | Construction method of soft rock foundation bedding mortar implantation tube pile |
| US20180216305A1 (en) * | 2014-11-11 | 2018-08-02 | Takao Nakano | Method for burying precast pile |
| CN108505515A (en) * | 2018-04-16 | 2018-09-07 | 周同和 | A kind of construction method of cement mortar composite pile |
| CN109371974A (en) * | 2018-10-25 | 2019-02-22 | 广西建工集团基础建设有限公司 | A kind of PHC tubular pole implantation construction method suitable for hard geology |
| CN112095626A (en) * | 2020-09-28 | 2020-12-18 | 中国电建集团华东勘测设计研究院有限公司 | Foundation pit supporting structure serving as corridor underpinning pile foundation and construction method thereof |
| CN112281829A (en) * | 2020-11-09 | 2021-01-29 | 中国瑞林工程技术股份有限公司 | Composite pile foundation structure and construction method thereof |
-
2021
- 2021-07-29 CN CN202110864532.XA patent/CN113774906A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180216305A1 (en) * | 2014-11-11 | 2018-08-02 | Takao Nakano | Method for burying precast pile |
| JP2016223208A (en) * | 2015-06-02 | 2016-12-28 | 株式会社トーヨーアサノ | Pile foundation structure |
| CN105297717A (en) * | 2015-10-30 | 2016-02-03 | 周同和 | Composite foundation pile with lower portion enlarged diameter section and construction method of composite foundation pile |
| CN105672307A (en) * | 2016-01-12 | 2016-06-15 | 四川华西管桩工程有限公司 | Expanded-base combination end pile bearing foundation |
| CN106351222A (en) * | 2016-08-30 | 2017-01-25 | 中国建筑西南勘察设计研究院有限公司 | Construction method of soft rock foundation bedding mortar implantation tube pile |
| CN108505515A (en) * | 2018-04-16 | 2018-09-07 | 周同和 | A kind of construction method of cement mortar composite pile |
| CN109371974A (en) * | 2018-10-25 | 2019-02-22 | 广西建工集团基础建设有限公司 | A kind of PHC tubular pole implantation construction method suitable for hard geology |
| CN112095626A (en) * | 2020-09-28 | 2020-12-18 | 中国电建集团华东勘测设计研究院有限公司 | Foundation pit supporting structure serving as corridor underpinning pile foundation and construction method thereof |
| CN112281829A (en) * | 2020-11-09 | 2021-01-29 | 中国瑞林工程技术股份有限公司 | Composite pile foundation structure and construction method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 朱浮声: "《岩土、抗震与结构工程的理论和实践》", 30 September 2005, 东北大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482029A (en) * | 2022-02-14 | 2022-05-13 | 安徽省交通规划设计研究总院股份有限公司 | Hole-expanding implanted slurry rock consolidation root solid-expanding prefabricated pile |
| CN114482151A (en) * | 2022-02-14 | 2022-05-13 | 安徽省交通规划设计研究总院股份有限公司 | Internal force testing device for outer ring of hole-expanding grouting implanted precast tubular pile and construction method |
| CN114482013A (en) * | 2022-02-14 | 2022-05-13 | 安徽省交通规划设计研究总院股份有限公司 | Suspended rock-socketed composite pile structure for hole-expanding precast pile and construction method of suspended rock-socketed composite pile structure |
| CN114482151B (en) * | 2022-02-14 | 2023-08-22 | 安徽省交通规划设计研究总院股份有限公司 | Device for testing internal force of outer ring of prefabricated pipe pile implanted by reaming grouting and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110230309B (en) | Karst area bridge karst cave pile foundation construction method | |
| CN113774906A (en) | Construction process for implanting composite-section hollow pile by filling mortar into expanded lead hole | |
| JP5265500B2 (en) | Pile digging method, foundation pile structure | |
| WO2018210019A1 (en) | Pile formation method for down-the-hole impact rotary jet composite piles | |
| CN106988302B (en) | A kind of high inclination-angle competent bed rotary digging pile driving construction engineering method | |
| CN103510510B (en) | A kind of enhancement mode long auger cast-with-pressure concrete pile and construction method | |
| CN110387879B (en) | Concrete cast-in-place pile construction method for hydraulically vibrating and hammering immersed tube | |
| CN109024651B (en) | Steel pipe concrete mixed pile foundation and construction method | |
| CN110924383A (en) | Construction method of pressurized cast-in-place pile based on reinforced fibers and metakaolin | |
| KR20140075767A (en) | Retaining wall construction using site compaction and excavation | |
| CN110700248A (en) | Miniature steel pipe pile for grouting small and medium-sized span bridge, pile foundation and construction method | |
| CN112281829A (en) | Composite pile foundation structure and construction method thereof | |
| CN111485547A (en) | Prefabricated horizontal bearing type high-toughness concrete permeable pile and preparation method thereof | |
| CN112726692A (en) | Multi-defense line vibration control method for ancient building | |
| CN111877329A (en) | Pile-in-pile broken pile and pile-splicing construction method | |
| CN114411761A (en) | Advanced pre-support system for planned subway tunnel during construction of newly-built building and pre-support construction method | |
| CN214656943U (en) | Core pile and slurry-fixed rigid-flexible combined pile | |
| CN203594023U (en) | Enhanced type long auger drilling pressure-grouting concrete pile | |
| CN112127225A (en) | Anti-floating self-repairing anchoring device, light soil roadbed structure and construction method | |
| CN217974332U (en) | Concrete precast pile structure | |
| CN111287173A (en) | Assembled core-carrying pile and construction method | |
| CN108035357B (en) | Filling pile construction scheme and its funnel | |
| CN113685190B (en) | Reinforcing system for shield to penetrate shallow soft clay and construction method | |
| CN205776209U (en) | The construction equipment of concrete-pile | |
| CN215105392U (en) | Retractable prefabricated retaining wall supporting structure for manual hole digging pile |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211210 |