CN205382482U - Bored concrete pile structure with it spouts stake soon to add core enlarged footing - Google Patents

Bored concrete pile structure with it spouts stake soon to add core enlarged footing Download PDF

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Publication number
CN205382482U
CN205382482U CN201620116976.XU CN201620116976U CN205382482U CN 205382482 U CN205382482 U CN 205382482U CN 201620116976 U CN201620116976 U CN 201620116976U CN 205382482 U CN205382482 U CN 205382482U
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CN
China
Prior art keywords
pile
rotary churning
bored concrete
enlarged footing
concrete pile
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.)
Expired - Fee Related
Application number
CN201620116976.XU
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Chinese (zh)
Inventor
曹慧
许利东
王晓曙
涂伟
陈明
徐金鑫
彭小毅
崔洪
潘延连
王项敏
余琨琳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yunnan construction investment foundation engineering Co., Ltd.
Original Assignee
YANTAI CONSTRUCTION ENGINEERING FOUNDATION ENGINEERING Co Ltd
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Filing date
Publication date
Application filed by YANTAI CONSTRUCTION ENGINEERING FOUNDATION ENGINEERING Co Ltd filed Critical YANTAI CONSTRUCTION ENGINEERING FOUNDATION ENGINEERING Co Ltd
Priority to CN201620116976.XU priority Critical patent/CN205382482U/en
Application granted granted Critical
Publication of CN205382482U publication Critical patent/CN205382482U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a spouting stake (3) soon, precast pile (5) are inserted and are spouted the stake soon in (3) that bored concrete pile structure with it spouts stake soon to add core enlarged footing follows radially to predetermine can insert precast pile (5) and can be under construction in bored concrete pile (1) and spouts through -hole (2) of stake soon, and enlarged footing (4) are spouted for taking soon in bored concrete pile (1) bottom. The utility model discloses satisfying under the prerequisite that current structural stability required and service function requires, predetermine reinforcing pile construction hole site in major diameter drilling bored concrete pile, can consolidate for the later stage pile foundation and provide execution conditions. The utility model discloses can effectively solve under the special geological conditions pile foundation subsides inhomogeneously during construction later stage or operation or a stake end bearing capacity engineering difficult problem such as not enough.

Description

A kind of it is provided with the filling pile structure adding core enlarged footing rotary churning pile
Technical field
This utility model belongs to building pile foundation engineering technical field, is specifically related to a kind of filling pile structure.
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
The purpose of this utility model is in that to solve the deficiencies in the prior art, it is provided that a kind of built pile foundation engineering reinforced or strengthens and can avoid again constructing, and is provided with, with what save engineering material and duration, the filling pile structure adding core enlarged footing rotary churning pile.
The purpose of this utility model is achieved through the following technical solutions:
A kind of being provided with the filling pile structure adding core enlarged footing rotary churning pile, be radially preset with the through hole that can be inserted into prefabricated pile rotary churning pile of can constructing, be the rotary churning pile with jet grouting enlarged footing bottom bored concrete pile in bored concrete pile, prefabricated pile inserts in rotary churning pile.
The through hole that this utility model is preset 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 180~250mm.The described rotary churning pile with jet grouting enlarged footing bottom bored concrete pile, is provided with more than two sections jet grouting enlarged footings.The end face of rotary churning pile and prefabricated pile and bored concrete pile either flush;The bottom surface of rotary churning pile and prefabricated pile is deeper than bored concrete pile bottom surface and is not less than 1m.Described jet grouting enlarged footing diameter is 300~500mm, and on every rotary churning pile, the spacing between adjacent two enlarged footings is 1~2m.The injecting paste material of described rotary churning pile is cement-silicate serosity, and the ratio of mud is 0.75:1~1:1, and waterglass incorporation is calculated as 2%~4% in mass ratio.
Of the present utility model be provided with the filling pile structure adding core enlarged footing rotary churning pile, meet current piling strtucture stability requirement and use functional requirement premise under, preset hole position in large diameter bored pile, execution conditions can be provided for later stage pile foundation reinforcement.Set multistage jet grouting enlarged footing can effectively strengthen the cohesive force of rotary churning pile and surrounding soil layer, thus improving the consolidation effect of rotary churning pile.The prefabricated pile added can significantly improve the integral reinforcing effect of reinforcing pile.For the pile foundation engineering under special engineering geological conditions, this utility model can effectively solve to settle the engineering roadblocks such as Lack of support at the bottom of uneven or stake during pile foundation phase after construction or operation under special geologic condition.
Accompanying drawing explanation
Fig. 1 is the radial section schematic diagram before this utility model does not irrigate rotary churning pile and inserts prefabricated pile;
Fig. 2 is the radial section schematic diagram after this utility model perfusion rotary churning pile and insertion prefabricated pile;
Fig. 3 is the Section A-A figure of Fig. 2;
Fig. 4 is an embodiment schematic diagram of jet grouting enlarged footing.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 shows be provided with the filling pile structure adding core enlarged footing rotary churning pile, the through hole 2 that can be inserted into prefabricated pile 5 rotary churning pile of can constructing radially it is preset with in bored concrete pile 1, being the rotary churning pile 3 with jet grouting enlarged footing 4 bottom bored concrete pile 1, prefabricated pile 5 inserts in rotary churning pile 3.The through hole 2 preset in bored concrete pile 1 is three holes that Kong Weicheng equilateral triangle relation is arranged.During construction, by adopting steel pipe or pvc pipe preset hole position in bored concrete pile 1, preset hole position diameter is generally 180~250mm.The rotary churning pile 3 with jet grouting enlarged footing 4 bottom bored concrete pile 1, is provided with more than two sections jet grouting enlarged footings.Jet grouting enlarged footing diameter is generally 300~500mm, and on every rotary churning pile, the spacing general control between adjacent two enlarged footings is at 1~2m.The form of jet grouting enlarged footing can as in figure 2 it is shown, the jet grouting enlarged footing of every rotary churning pile be arranged on same height and position, it is possible to as shown in Figure 4, the interlaced setting of jet grouting enlarged footing height and position.The end face of rotary churning pile 3 and prefabricated pile 5 and bored concrete pile 1 either flush;The bottom surface of rotary churning pile and prefabricated pile is deeper than bored concrete pile bottom surface and is not less than 1m.The stake of rotary churning pile and prefabricated pile is long to be determined according to practice of construction environmental condition and stability requirement.The injecting paste material of rotary churning pile adopts cement-silicate serosity, and the ratio of mud is 0.75:1~1:1, and waterglass incorporation is calculated as 2%~4% in mass ratio.Grout pile footpath is typically no less than 1m.Rotary churning pile stake footpath and default through-hole diameter match.Prefabricated pile 5 is circular steel reinforced concrete solid pile, and stake footpath is generally less than rotary churning pile stake footpath 30mm.
The construction method step that this utility model is provided with the filling pile structure adding core enlarged footing rotary churning pile 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, carries out bored pile construction by prior art construction method and step;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, as the position, construction hole of subsequent construction rotary churning pile;
C. when built pile foundation can not meet current structure stability requirement, when needing bored concrete pile is reinforced, start to carry out rotary churning pile strengthening construction with grouting serous fluid bottom bored concrete pile by default through hole, rotary churning pile arranges multistage jet grouting enlarged footing within the scope of paragraphs below at the bottom of Pile, and before rotary churning pile grouting serous fluid solidifies, prefabricated pile is inserted, formed with this and be provided with the large diameter bored pile structure adding core enlarged footing rotary churning pile.The end face of rotary churning pile and prefabricated pile and bored concrete pile either flush, the bottom surface of rotary churning pile and prefabricated pile is deeper than bored concrete pile.

Claims (7)

1. one kind is provided with the filling pile structure adding core enlarged footing rotary churning pile, it is characterized in that, the through hole (2) that can be inserted into prefabricated pile (5) rotary churning pile of can constructing radially it is preset with in bored concrete pile (1), bored concrete pile (1) bottom is the rotary churning pile (3) with jet grouting enlarged footing (4), and prefabricated pile (5) inserts in rotary churning pile (3).
2. a kind of according to claim 1 it is provided with the filling pile structure adding core enlarged footing rotary churning pile, 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. according to claim 1 or claim 2 a kind of it is provided with the filling pile structure adding core enlarged footing rotary churning pile, it is characterised in that adopting steel pipe or pvc pipe in bored concrete pile (1) preset hole position, preset hole position diameter is 180~250mm.
4. a kind of according to claim 1 it is provided with the filling pile structure adding core enlarged footing rotary churning pile, it is characterized in that, the described rotary churning pile (3) with jet grouting enlarged footing (4) in bored concrete pile (1) bottom, is provided with more than two sections jet grouting enlarged footings.
5. a kind of according to claim 1 or 4 it is provided with the filling pile structure adding core enlarged footing rotary churning pile, it is characterised in that the end face of rotary churning pile (3) and prefabricated pile (5) and bored concrete pile (1) either flush;The bottom surface of rotary churning pile (3) and prefabricated pile (5) is deeper than bored concrete pile bottom surface and is not less than 1m.
6. a kind of according to claim 1 or 4 it is provided with the filling pile structure adding core enlarged footing rotary churning pile, it is characterized in that, described jet grouting enlarged footing (4) diameter is 300~500mm, and the spacing between every upper adjacent two enlarged footings of rotary churning pile (3) is 1~2m.
7. a kind of according to claim 1 or 2 or 4 it is provided with the filling pile structure adding core enlarged footing rotary churning pile, it is characterized in that, the injecting paste material of described rotary churning pile (3) is cement-silicate serosity, and the ratio of mud is 0.75:1~1:1, and waterglass incorporation is calculated as 2%~4% in mass ratio.
CN201620116976.XU 2016-02-05 2016-02-05 Bored concrete pile structure with it spouts stake soon to add core enlarged footing Expired - Fee Related CN205382482U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620116976.XU CN205382482U (en) 2016-02-05 2016-02-05 Bored concrete pile structure with it spouts stake soon to add core enlarged footing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620116976.XU CN205382482U (en) 2016-02-05 2016-02-05 Bored concrete pile structure with it spouts stake soon to add core enlarged footing

Publications (1)

Publication Number Publication Date
CN205382482U true CN205382482U (en) 2016-07-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105625418A (en) * 2016-02-05 2016-06-01 云南建工基础工程有限责任公司 Cast-in-place pile structure provided with cored expanded head jet grouting piles and construction method of cast-in-place pile structure
CN109930593A (en) * 2019-03-25 2019-06-25 中信建筑设计研究总院有限公司 A kind of Structural Engineering stake and construction method and its application in middle hard place matter soil layer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105625418A (en) * 2016-02-05 2016-06-01 云南建工基础工程有限责任公司 Cast-in-place pile structure provided with cored expanded head jet grouting piles and construction method of cast-in-place pile structure
CN109930593A (en) * 2019-03-25 2019-06-25 中信建筑设计研究总院有限公司 A kind of Structural Engineering stake and construction method and its application in middle hard place matter soil layer

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: 650501 Yunnan city of Kunming Province Economic and Technological Development Zone Forest Road No. 188

Patentee 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

Patentee before: YANTAI CONSTRUCTION ENGINEERING FOUNDATION ENGINEERING CO., LTD.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160713

Termination date: 20200205