CN108517861B - Composite reinforced pile structure for resisting foundation uplift and construction method - Google Patents
Composite reinforced pile structure for resisting foundation uplift and construction method Download PDFInfo
- Publication number
- CN108517861B CN108517861B CN201810424911.5A CN201810424911A CN108517861B CN 108517861 B CN108517861 B CN 108517861B CN 201810424911 A CN201810424911 A CN 201810424911A CN 108517861 B CN108517861 B CN 108517861B
- Authority
- CN
- China
- Prior art keywords
- geogrids
- reinforcement cage
- fine stone
- stone concrete
- foundation
- 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.)
- Active
Links
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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- 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)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A composite reinforced pile structure for resisting foundation uplift and a construction method thereof are provided, so as to effectively weaken or eliminate the uplift deformation of the foundation, reduce the operation risk of a high-speed train and facilitate the saving of the construction cost of the high-speed railway. Comprises a fine stone concrete pouring body and a composite reinforcement cage buried in the fine stone concrete pouring body. The composite reinforcement cage is composed of vertical geogrids arranged at intervals in the circumferential direction and annular geogrids arranged at intervals in the vertical direction, the vertical geogrids and the annular geogrids are connected into a whole in a crossing way, quadrilateral meshes are formed between two adjacent vertical geogrids and two adjacent annular geogrids, and the diameter of inscribed circles of the meshes is not smaller than the maximum particle size of fine stone concrete aggregate. The fine stone concrete pouring body is formed by pouring fine stone concrete into a foundation borehole from the composite reinforcement cage, and a protective layer is formed between the outer wall of the composite reinforcement cage and the wall of the foundation borehole.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering pile foundations, in particular to a composite reinforced pile structure for resisting foundation uplift and a construction method.
Technical Field
In recent years, along with the acceleration of the construction pace of high-speed railways, more and more high-speed railways are put into operation, however, a new uplift problem is found in the operation process, namely, the foundation at the bottom of the geotechnical structure generates uplift deformation, and the uplift deformation is possibly caused by various factors such as water immersion, temperature reduction, groundwater level fluctuation, ground stress release and the like. The foundation is large in deformation hazard, and the ballastless track slab of the high-speed railway is easy to crack, so that serious ballastless track diseases are caused, and even the running safety of the high-speed train is endangered, in particular to a ballastless track low embankment or cutting foundation bed.
The traditional reinforced concrete pile foundation is one of effective methods for resisting foundation uplift, but the reinforced concrete pile foundation has large consumption of steel bars and high engineering cost. It is seen that in order to reduce or eliminate the uplift deformation of ballastless track subgrade substrates, and at the same time reduce high-speed rail investment, a novel anti-uplift pile foundation structure is needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a composite reinforced pile structure for resisting foundation uplift so as to effectively weaken or eliminate foundation uplift deformation, reduce high-speed train operation risk and facilitate saving the construction cost of a high-speed railway.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention relates to a composite reinforced pile structure for resisting foundation uplift, which is characterized in that: comprises a fine stone concrete pouring body and a composite reinforcement cage buried in the fine stone concrete pouring body; the composite reinforcement cage is composed of vertical geogrids arranged at intervals in the circumferential direction and annular geogrids arranged at intervals in the vertical direction, the vertical geogrids and the annular geogrids are connected into a whole in a crossing way, quadrilateral meshes are formed between two adjacent vertical geogrids and two adjacent annular geogrids, and the diameter of inscribed circles of the meshes is not smaller than the maximum particle size of fine stone concrete aggregate; the fine stone concrete pouring body is formed by pouring fine stone concrete into a foundation borehole from a composite reinforcement cage, and a protective layer is formed between the outer wall of the composite reinforcement cage and the wall of the foundation borehole.
Another technical problem to be solved by the present invention is to provide a construction method of the composite reinforced pile structure for resisting foundation uplift, which includes the following steps:
(1) processing the geogrid into a composite reinforcement cage and conveying the composite reinforcement cage to a construction site;
(2) drilling holes on a construction foundation, and removing residues at the bottom of the holes;
(3) sleeving the upper end of the composite reinforcement cage into the outer wall of the outlet end of the concrete pumping pipe, locking by using an annular lock catch, and feeding the composite reinforcement cage into a drilled hole;
(4) and slowly injecting the fine stone concrete into the drilled hole through the concrete pumping pipe until the fine stone concrete fills the drilled hole, then loosening the annular lock catch, pumping the concrete pumping pipe, and solidifying the fine stone concrete to form a fine stone concrete injection body and a composite reinforced pile.
The invention has the beneficial effects that the tensile effect of the geogrid is fully exerted according to the principle that the pile foundation resists foundation uplift, and the traditional anti-pulling reinforced concrete pile foundation is improved into a composite reinforced pile structure capable of resisting foundation uplift at the bottom of the roadbed; the geogrid is adopted to replace the steel bars of the traditional pile foundation, so that the anti-uplift effect is good, the steel bar consumable materials can be greatly reduced, and the construction cost of a high-speed railway is saved; the composite reinforcement cage has the advantages of light weight, convenience in transportation, mass production and the like, and in addition, the structure has the characteristics of convenience and rapidness in construction and clear flow.
Drawings
The specification includes the following three drawings:
fig. 1 is a perspective view of a composite reinforced pile construction resistant to foundation uplift according to the present invention.
FIG. 2 is a schematic diagram of the connection between a composite reinforcement cage and the outlet of a concrete pumping pipe in the construction of a composite reinforcement pile for resisting foundation heave according to the present invention;
fig. 3 is a cross-sectional view of a composite reinforced pile construction of the present invention for resisting foundation heave.
The components and corresponding indicia are shown: the concrete pumping device comprises a composite reinforcement cage 1, a vertical geogrid 1.1, an annular geogrid 1.2, fine stone concrete 2, a core 2.1, a protective layer 2.2, a concrete pumping pipe T and an annular lock catch S.
Detailed Description
The invention will be further illustrated by the following specific examples in conjunction with the accompanying drawings.
Referring to fig. 1 and 3, a composite reinforced pile construction resistant to foundation uplift of the present invention includes a fine stone concrete filled body 2 and a composite reinforcement cage 1 buried therein. The composite reinforcement cage 1 is composed of vertical geogrids 1.1 arranged at intervals in the circumferential direction and annular geogrids 1.2 arranged at intervals in the vertical direction, the vertical geogrids 1.1 and the annular geogrids 1.2 are connected into a whole in a crossing way, quadrilateral meshes are formed between two adjacent vertical geogrids 1.1 and two adjacent annular geogrids 1.2, and the diameter of inscribed circles of the meshes is not smaller than the maximum particle size of fine stone concrete aggregate. The fine stone concrete pouring body 2 is formed by pouring fine stone concrete into a foundation borehole from the composite reinforcement cage 1, and a protective layer 2.2 is formed between the outer wall of the composite reinforcement cage 1 and the wall of the foundation borehole. The invention improves the traditional anti-pulling reinforced concrete pile foundation into a composite reinforced pile structure capable of resisting foundation uplift at the bottom of a roadbed, fully utilizes the tensile capacity of a geogrid, transmits expansion and shear force generated in the foundation uplift process to the geogrid of an expansion and pulling section of the composite reinforced pile, and then transmits the expansion and shear force to an anchoring section of the composite reinforced pile through the geogrid, wherein the anchoring section of the composite reinforced pile plays an anchoring role, so that the soil body around the pile is constrained and cannot uplift, and the anti-uplift effect is good. The geogrid is used for replacing the reinforcing steel bars, so that the reinforcing steel bar consumable materials can be greatly reduced, the construction cost of a high-speed railway is saved, and the composite reinforcement cage has the advantages of light weight, convenience in transportation, mass production and the like.
Referring to fig. 1 and 2, as a preferred embodiment, the vertical geogrids 1.1 are equally spaced along the circumferential direction, the annular geogrids 1.2 are equally spaced along the vertical direction, and the mesh openings formed are regular polygons. In general, the thickness of the protective layer 2.2 should be not less than 50mm.
Referring to fig. 2 and 1, the construction method of the composite reinforced pile structure for resisting foundation lifting of the present invention comprises the following steps:
(1) processing the geogrid into a composite reinforcement cage 1 and conveying the composite reinforcement cage to a construction site;
(2) drilling holes on a construction foundation, and removing residues at the bottom of the holes;
(3) sleeving the upper end of the composite reinforcement cage 1 into the outer wall of the outlet end of the concrete pumping pipe T, locking by using an annular lock catch S, and feeding the composite reinforcement cage 1 into a drill hole;
(4) and slowly injecting fine stone concrete into the drilled hole through the concrete pumping pipe T until the fine stone concrete fills the drilled hole, then loosening the annular lock catch S, pumping the concrete pumping pipe T, and solidifying the fine stone concrete to form a fine stone concrete filling body 2 and a composite reinforced pile.
The construction method makes full use of the gravity and diffusion action of fine stone concrete, promotes the expansion of the composite reinforcement cage 1, and avoids the distortion of the composite reinforcement cage 1, thereby ensuring the construction quality.
The foregoing description is only illustrative of the principles of a composite reinforced pile construction and method of construction for resisting foundation heave of the present invention and is not intended to limit the invention to the particular method and application shown and described, so that all possible modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.
Claims (4)
1. A composite reinforced pile structure for resisting foundation uplift is characterized in that: comprises a fine stone concrete pouring body (2) and a composite reinforcement cage (1) embedded in the fine stone concrete pouring body; the composite reinforcement cage (1) is composed of vertical geogrids (1.1) arranged at intervals in the circumferential direction and annular geogrids (1.2) arranged at intervals in the vertical direction, the vertical geogrids (1.1) and the annular geogrids (1.2) are connected into a whole in a crossing way, quadrilateral meshes are formed between two adjacent vertical geogrids (1.1) and two adjacent annular geogrids (1.2), and the inscribed circle diameter of each mesh is not smaller than the maximum particle size of fine stone concrete aggregate; the fine stone concrete pouring body (2) is formed by pouring fine stone concrete into a foundation borehole from the composite reinforcement cage (1), and a protective layer (2.2) is formed between the outer wall of the composite reinforcement cage (1) and the wall of the foundation borehole.
2. A composite reinforced pile construction for resisting foundation uplift as defined in claim 1, wherein: the vertical geogrids (1.1) are arranged at equal intervals along the circumferential direction, the annular geogrids (1.2) are arranged at equal intervals along the vertical direction, and the formed meshes are regular polygons.
3. A composite reinforced pile construction for resisting foundation uplift as defined in claim 1, wherein: the thickness of the protective layer (2.2) is not less than 50mm.
4. A method of constructing a composite reinforced pile structure for resisting foundation uplift as claimed in any one of claims 1 to 3, comprising the steps of:
(1) processing the geogrid into a composite reinforcement cage (1) and conveying the composite reinforcement cage to a construction site;
(2) drilling holes on a construction foundation, and removing residues at the bottom of the holes;
(3) the upper end of the composite reinforcement cage (1) is sleeved into the outer wall of the outlet end of the concrete pumping pipe (T), and is locked by an annular lock catch (S), and the composite reinforcement cage (1) is sent into a drill hole;
(4) and slowly injecting fine stone concrete into the drilled hole through the concrete pumping pipe (T) until the fine stone concrete fills the drilled hole, then loosening the annular lock catch (S), pumping the concrete pumping pipe (T), and solidifying the fine stone concrete to form a fine stone concrete pouring body (2) and a composite reinforced pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810424911.5A CN108517861B (en) | 2018-05-07 | 2018-05-07 | Composite reinforced pile structure for resisting foundation uplift and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810424911.5A CN108517861B (en) | 2018-05-07 | 2018-05-07 | Composite reinforced pile structure for resisting foundation uplift and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108517861A CN108517861A (en) | 2018-09-11 |
| CN108517861B true CN108517861B (en) | 2023-07-28 |
Family
ID=63429927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810424911.5A Active CN108517861B (en) | 2018-05-07 | 2018-05-07 | Composite reinforced pile structure for resisting foundation uplift and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108517861B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111395312A (en) * | 2020-03-23 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Composite light pile structure, manufacturing method, construction method and pile splicing method |
| CN111395060B (en) * | 2020-03-24 | 2021-06-18 | 中铁二院工程集团有限责任公司 | Design and construction method for widening roadbed structure of existing cutting in karst area |
| CN111395061B (en) * | 2020-03-24 | 2021-11-09 | 中铁二院工程集团有限责任公司 | Light roadbed structure of underpass operation bridge, design and construction method |
| CN111395082B (en) * | 2020-03-26 | 2021-11-26 | 中铁二院工程集团有限责任公司 | Light roadbed structure above operation tunnel, design and construction method |
| CN112523230B (en) * | 2020-11-17 | 2022-04-29 | 湖北工业大学 | Ecological slope protection method based on straw reinforced soil base material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424081A (en) * | 2008-12-08 | 2009-05-06 | 中国电力科学研究院 | Novel miniature pile construction method |
| CN201873986U (en) * | 2010-08-19 | 2011-06-22 | 袁建标 | Grating type reinforcing cage |
| CN203256732U (en) * | 2013-05-23 | 2013-10-30 | 中国建筑第八工程局有限公司 | Ultra-large-diameter cast-in-place concrete pile reinforcement cage reinforcing device |
| CN203961284U (en) * | 2014-07-16 | 2014-11-26 | 陕西建工第十一建设集团有限公司 | A kind of concrete cylindrical regularization constructing structure |
| CN107310022A (en) * | 2017-07-27 | 2017-11-03 | 江苏腾晖电力技术有限公司 | Foundation pile for Frozen Ground Area photovoltaic bracket and preparation method thereof |
| CN208219633U (en) * | 2018-05-07 | 2018-12-11 | 中铁二院工程集团有限责任公司 | A kind of composite reinforced stake construction for resisting ground protuberance |
-
2018
- 2018-05-07 CN CN201810424911.5A patent/CN108517861B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424081A (en) * | 2008-12-08 | 2009-05-06 | 中国电力科学研究院 | Novel miniature pile construction method |
| CN201873986U (en) * | 2010-08-19 | 2011-06-22 | 袁建标 | Grating type reinforcing cage |
| CN203256732U (en) * | 2013-05-23 | 2013-10-30 | 中国建筑第八工程局有限公司 | Ultra-large-diameter cast-in-place concrete pile reinforcement cage reinforcing device |
| CN203961284U (en) * | 2014-07-16 | 2014-11-26 | 陕西建工第十一建设集团有限公司 | A kind of concrete cylindrical regularization constructing structure |
| CN107310022A (en) * | 2017-07-27 | 2017-11-03 | 江苏腾晖电力技术有限公司 | Foundation pile for Frozen Ground Area photovoltaic bracket and preparation method thereof |
| CN208219633U (en) * | 2018-05-07 | 2018-12-11 | 中铁二院工程集团有限责任公司 | A kind of composite reinforced stake construction for resisting ground protuberance |
Non-Patent Citations (1)
| Title |
|---|
| 谢忠勇等.土工加筋碎石桩在公路软基处理中的应用.《山西建筑》.2011,第第37卷卷(第第37卷期),第145-147页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108517861A (en) | 2018-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108517861B (en) | Composite reinforced pile structure for resisting foundation uplift and construction method | |
| CN102518135B (en) | Horizontal jet grouting soil anchor and castinplace pile Composite Foundation Pit supporting construction engineering method | |
| CN208219633U (en) | A kind of composite reinforced stake construction for resisting ground protuberance | |
| CN111749066A (en) | Roadbed base gravel pile composite foundation structure and construction method | |
| KR100762991B1 (en) | Precast piling method injected with high-strength mortar | |
| CN206956742U (en) | High precipitous rock roadbed side slope repair system | |
| CN111395060B (en) | Design and construction method for widening roadbed structure of existing cutting in karst area | |
| CN103352477A (en) | Vertical prestressed anchor rod gravity type composite retaining wall and design and construction method thereof | |
| CN106522292A (en) | Grouting combined prestressed anchor rod static pressure pile rectification and reinforcement method | |
| CN108360535A (en) | Foundation pit supporting construction based on campshed and inner support and its construction method | |
| CN107938685A (en) | A kind of new diagonal brace composite support device | |
| CN111254909B (en) | Construction process of composite pile foundation of soft soil area foundation | |
| CN108824097A (en) | Prefabricated GFRP pipe concrete stake and armoured concrete slab overhead type roadbed pile slab structure | |
| CN205576957U (en) | Stake end pilework | |
| CN104929101B (en) | Resistance to plucking prestress anchoraging broken stone pile and construction method that a kind of base expanding and base expanding multistage side is expanded | |
| CN208472713U (en) | A kind of composite structure mini pile for administering small-sized landslide | |
| CN111395062B (en) | Equal-load replacement light soil side wide roadbed structure, design and construction method | |
| CN111395082B (en) | Light roadbed structure above operation tunnel, design and construction method | |
| CN205999887U (en) | Boring steel reinforcement cage hoop slip casting broken stone pile | |
| CN207092110U (en) | A kind of friction pile based on the beam of uniform strength | |
| CN201305848Y (en) | Composite reinforced concrete pile capable of bearing pressure and resisting tension | |
| CN111395061B (en) | Light roadbed structure of underpass operation bridge, design and construction method | |
| TWM568277U (en) | Resource-based perfusion damping pile structure and backfilling reproductive material thereof | |
| KR20090025943A (en) | Variable gravel compaction pile method | |
| CN219952033U (en) | Cantilever type retaining wall composite retaining structure |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |