CN105714770A - Reinforced type cast-in-situ bored pile structure and construction method thereof - Google Patents
Reinforced type cast-in-situ bored pile structure and construction method thereof Download PDFInfo
- Publication number
- CN105714770A CN105714770A CN201610081900.2A CN201610081900A CN105714770A CN 105714770 A CN105714770 A CN 105714770A CN 201610081900 A CN201610081900 A CN 201610081900A CN 105714770 A CN105714770 A CN 105714770A
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- Prior art keywords
- pile
- construction
- reinforcing
- bored concrete
- preset
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Classifications
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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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
-
- 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
Abstract
The invention provides a reinforced type cast-in-situ bored pile structure and a construction method thereof. Through holes (3) in which reinforcing piles can be inserted are preformed in a filling pile (1) in the radial direction. In the construction process of the filling pile, vertical steel pipes or PVC pipes are inserted in advance according to the number and the positions of the preformed hole sites, and the preformed through holes are formed in the filling pile after construction is finished; and when the filling pile needs to be reinforced, the prefabricated reinforcing piles are inserted in the preformed through holes, and the bottom ends of the reinforcing piles are inserted in a geological stratum at the bottom of the filling pile. By the adoption of the reinforced type cast-in-situ bored pile structure, if a pile foundation cannot meet the requirement for structural stability in the later construction period, the reinforcing piles can be adopted for conducting reinforcing construction through the preformed hole sites, and construction conditions are reserved for later reinforcing or strengthening construction while the requirements for the pile foundation structural stability and the use function currently are met. For a pile foundation project under a special project geological condition, the project problem that sedimentation of a pile foundation is not even or the bearing capacity of a pile bottom is insufficient is solved.
Description
Technical field
The invention belongs to building pile foundation engineering technical field, be specifically related to a kind of drill-pouring pilework and construction method thereof.
Background technology
Along with the iterative method of China's capital construction, all kinds of architectural engineerings such as base pit engineering, slope project, science of bridge building emerge in large numbers therewith.In above-mentioned engineering, pile foundation engineering is essential.In recent years, the pile foundation engineering under the special engineering geological conditions such as limestone (karst) cumulosol regional, deep area gets more and more.Owing to multiformity and the correlation theory of special geologic condition study the factors such as not enough, cause installing intersection result and Practical Project geological conditions inconsistent, thus causing that design and construction can not good solving practical problems, a lot of pile foundation engineerings all can occur there is also the engineering problems such as solution cavity under differential settlement, stake after construction, so having to carry out reinforcing or again constructing for built pile foundation engineering.Existing reinforcement means mainly has three kinds, and a stake side grouting at the bottom of scheme one is is reinforced, and scheme two is cast-in-situ bored pile consolidated by adding piles, and scheme three is to increase Using Anchor Rod Static.But these three reinforcement means has some limitations and difficulty of construction, as scheme one needs to ask, Grouting Pipe is installed outside pile body steel reinforcement cage in advance, if being fitted without in advance, scheme one is difficult to, simultaneously under Karst Geology, program mud jacking amount is difficult to estimate, effect also needs to pass through verification experimental verification；Scheme two is respectively to set up a pile before and after former stake, former stake is connected by linking beam, and the program requires that original building basis is not affected by staking, and simultaneously the program is affected relatively greatly by construction technology and cost is higher；Scheme three is at former stake Zhou Zengshe anchor jacked pile, is connected by cushion cap, and the program uses limited in Deep Thick Soft Ground Area, it is difficult to reach to improve the reinforcing purpose of bearing capacity.And again construct and not only affect the duration, also create the huge waste of manpower and materials.
Summary of the invention
It is an object of the invention to solve the deficiencies in the prior art, a kind of simple in construction is provided, is prone to reinforce built pile foundation engineering or strengthen and can avoid again to construct, can reinforcement type drill-pouring pilework and construction method thereof with what save engineering material and duration.
The purpose of the present invention is achieved through the following technical solutions:
One can reinforcement type drill-pouring pilework, in bored concrete pile, be radially preset with the through hole that can be inserted into reinforcing pile.
The through hole that the present invention presets in bored concrete pile is three holes that Kong Weicheng equilateral triangle relation is arranged.Adopting steel pipe or pvc pipe in bored concrete pile preset hole position, preset hole position diameter is 160～200mm.The end face of the reinforcing pile in insertion through hole and bored concrete pile either flush.Reinforcing pile bottom extends downward bottom surface beyond bored concrete pile bottom surface.
Can the construction method step of reinforcement type drill-pouring pilework as follows:
A. according to installing intersection report and piling strtucture stability requirement, it is determined that include the construction parameter that cast-in-situ bored pile diameter, stake are long；
B. pile-forming machine perching, is irrigated pile driving construction；Work progress is previously inserted according to preset hole bit quantity and position upright steel pipe or pvc pipe, is formed in the bored concrete pile of construction and preset through hole；
C. when bored concrete pile is reinforced by needs, being inserted the reinforcing pile of well in advance and preset in through hole, the end face of reinforcing pile and bored concrete pile either flush, reinforcing pile bottom is inserted in the geological stratification bottom bored concrete pile.
What adopt the present invention can reinforcement type drill-pouring pilework, if phase pile foundation can not meet structural stability requirement after construction, reinforcing pile can be adopted to carry out strengthening construction while meeting current piling strtucture stability requirement and using functional requirement by preset hole position, reinforce for the later stage or strengthen the reserved execution conditions of construction.For the pile foundation engineering under special engineering geological conditions, the present invention can effectively solve that pile foundation settlement is uneven or the engineering roadblock such as Lack of support at the bottom of stake, has higher Practical Project and is worth.
Accompanying drawing explanation
Fig. 1 is present invention radial section schematic diagram when being not inserted into reinforcing pile；
Fig. 2 is the radial section schematic diagram after the present invention inserts reinforcing pile；
Fig. 3 is the Section A-A figure of Fig. 2.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 shows, of the present invention can reinforcement type drill-pouring pilework, be the through hole 3 being radially preset with in bored concrete pile 1 and can be inserted into reinforcing pile 2.The through hole 2 preset in bored concrete pile 1 is generally three holes, and its Kong Weicheng equilateral triangle relation is arranged.1 footpath of bored concrete pile is typically no less than 1m.Being generally adopted steel pipe or pvc pipe in bored concrete pile 1 preset hole position, preset hole position diameter is generally 160～200mm.Reinforcing pile 2 can well in advance standby, the stake footpath of reinforcing pile and preset hole position diameter matches, pile shaft material strength grade is consistent with bored concrete pile 1.
Of the present invention can the construction method step of reinforcement type drill-pouring pilework as follows:
A. according to installing intersection report and piling strtucture stability requirement, it is determined that include the construction parameter that cast-in-situ bored pile diameter, stake are long；
B. pile-forming machine perching, is irrigated pile driving construction by prior art construction method；Work progress is previously inserted according to preset hole bit quantity and position upright steel pipe or pvc pipe, is formed in the bored concrete pile of construction and preset through hole；
C. when bored concrete pile is reinforced by needs, being inserted the reinforcing pile of well in advance presets in through hole, the end face of reinforcing pile and bored concrete pile either flush, and reinforcing pile bottom extends downward bottom surface beyond bored concrete pile bottom surface, inserting in the geological stratification bottom bored concrete pile, insertion depth is not less than 1m.The stake of reinforcing pile is long to be determined according to practice of construction environmental condition and stability requirement.
Claims (6)
1. one kind can reinforcement type drill-pouring pilework, it is characterised in that in bored concrete pile (1), be radially preset with the through hole (3) that can be inserted into reinforcing pile (2).
2. one according to claim 1 can reinforcement type drill-pouring pilework, it is characterised in that three holes that the through hole (2) preset in bored concrete pile (1) is arranged for Kong Weicheng equilateral triangle relation.
3. one according to claim 1 and 2 can reinforcement type drill-pouring pilework, it is characterised in that adopting steel pipe or pvc pipe in bored concrete pile (1) preset hole position, preset hole position diameter is 160～200mm.
4. one according to claim 1 and 2 can reinforcement type drill-pouring pilework, it is characterised in that insert end face and bored concrete pile (1) either flush of reinforcing pile (2) in through hole.
5. one according to claim 1 and 2 can reinforcement type drill-pouring pilework, it is characterised in that described reinforcing pile (2) bottom extends downward bottom surface beyond bored concrete pile (1) bottom surface.
6. can the construction method of reinforcement type drill-pouring pilework as described in any one of claim 1-5, it is characterised in that method step is as follows:
A. according to installing intersection report and piling strtucture stability requirement, it is determined that include the construction parameter that cast-in-situ bored pile diameter, stake are long；
B. pile-forming machine perching, is irrigated pile driving construction；Work progress is previously inserted according to preset hole bit quantity and position upright steel pipe or pvc pipe, is formed in the bored concrete pile of construction and preset through hole；
C. when bored concrete pile is reinforced by needs, being inserted the reinforcing pile of well in advance and preset in through hole, the end face of reinforcing pile and bored concrete pile either flush, reinforcing pile bottom is inserted in the geological stratification bottom bored concrete pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610081900.2A CN105714770A (en) | 2016-02-05 | 2016-02-05 | Reinforced type cast-in-situ bored pile structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610081900.2A CN105714770A (en) | 2016-02-05 | 2016-02-05 | Reinforced type cast-in-situ bored pile structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105714770A true CN105714770A (en) | 2016-06-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610081900.2A Pending CN105714770A (en) | 2016-02-05 | 2016-02-05 | Reinforced type cast-in-situ bored pile structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105714770A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104113A (en) * | 2017-12-26 | 2018-06-01 | 中铁第四勘察设计院集团有限公司 | Exceeded ruggedized construction and construction method are deformed for friction pile in work progress |
| CN110374086A (en) * | 2019-05-28 | 2019-10-25 | 上海长凯岩土工程有限公司 | It is a kind of for improving the spreading construction method of existing pier, pile bearing capacity |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072981A (en) * | 1992-10-22 | 1993-06-09 | 张平潮 | Deep foundation, stake reserved passageway construction method |
| CN1298050A (en) * | 2000-12-04 | 2001-06-06 | 罗明 | High-pressure rotating spraying bottom-spreading technology for pre-buried pipe |
| CN1298990A (en) * | 2000-12-20 | 2001-06-13 | 罗明 | High-pressure rotary spray technique for enlarging base of preburied pipe |
| JP2009280966A (en) * | 2008-05-19 | 2009-12-03 | Nippon Steel Corp | Steel pipe pile and construction method therefor |
| CN205530231U (en) * | 2016-02-05 | 2016-08-31 | 云南建工基础工程有限责任公司 | Can reinforcement type drilling bored concrete pile structure |
-
2016
- 2016-02-05 CN CN201610081900.2A patent/CN105714770A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072981A (en) * | 1992-10-22 | 1993-06-09 | 张平潮 | Deep foundation, stake reserved passageway construction method |
| CN1298050A (en) * | 2000-12-04 | 2001-06-06 | 罗明 | High-pressure rotating spraying bottom-spreading technology for pre-buried pipe |
| CN1298990A (en) * | 2000-12-20 | 2001-06-13 | 罗明 | High-pressure rotary spray technique for enlarging base of preburied pipe |
| JP2009280966A (en) * | 2008-05-19 | 2009-12-03 | Nippon Steel Corp | Steel pipe pile and construction method therefor |
| CN205530231U (en) * | 2016-02-05 | 2016-08-31 | 云南建工基础工程有限责任公司 | Can reinforcement type drilling bored concrete pile structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104113A (en) * | 2017-12-26 | 2018-06-01 | 中铁第四勘察设计院集团有限公司 | Exceeded ruggedized construction and construction method are deformed for friction pile in work progress |
| CN110374086A (en) * | 2019-05-28 | 2019-10-25 | 上海长凯岩土工程有限公司 | It is a kind of for improving the spreading construction method of existing pier, pile bearing capacity |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
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| CB02 | Change of applicant information |
Address after: 650501 Yunnan city of Kunming Province Economic and Technological Development Zone Forest Road No. 188 Applicant after: Yunnan construction investment foundation engineering Co., Ltd. Address before: 650501 Yunnan city of Kunming Province Economic and Technological Development Zone Forest Road No. 188 Applicant before: YANTAI CONSTRUCTION ENGINEERING FOUNDATION ENGINEERING CO., LTD. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160629 |