CN102433872A - Large-diameter concrete prefabricated segment pile of soft soil foundation - Google Patents
Large-diameter concrete prefabricated segment pile of soft soil foundation Download PDFInfo
- Publication number
- CN102433872A CN102433872A CN2011102879626A CN201110287962A CN102433872A CN 102433872 A CN102433872 A CN 102433872A CN 2011102879626 A CN2011102879626 A CN 2011102879626A CN 201110287962 A CN201110287962 A CN 201110287962A CN 102433872 A CN102433872 A CN 102433872A
- Authority
- CN
- China
- Prior art keywords
- pile foundation
- pile
- concrete prefabricated
- sections
- stake
- 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.)
- Granted
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a large-diameter concrete prefabricated segment pile of a soft soil foundation, which comprises a plurality of pile foundation segments, wherein the plurality of pile foundation segments are sequentially and fixedly connected and are of a hollow structure with a through inner cavity, a soil borrowing channel and a guide structure are arranged in the inner cavity of the pile foundation segments, the inner cavity can be also used as the soil borrowing channel, the guide structure comprises a support arm and a guide hole, the guide hole is used for a guide rod to be installed in a penetrating way, and a plurality of through holes are further formed on the lateral walls of the pile foundation segments and are used for air or water spraying. Due to the adoption of the structure design, the obtained large-diameter concrete prefabricated segment pile has the advantages of high guidance, low construction resistance and the like.
Description
Technical field
The present invention relates to the technical field of building of soft foundation bridge, relate in particular to the stake of a kind of soft foundation large-diameter concrete prefabricated subsection.
Background technology
At present, the pile foundation of soft foundation bridge adopts preformed pile or bored pile form usually.
Square or the tubular cross section of the general employing of preformed pile adopts hammering or pile vibrosinking during construction.Receive the restrictions such as power and geological conditions of construction equipment, the size of preformed pile all less (general diameter is below 600 millimeters).The technical problem underlying that preformed pile exists is:
1) noise that sends of the construction operation of driven pile is very big, improves constantly along with what urban environmental protection required, and driven pile is because the negative effect of noise, vibration has been inappropriate in the city adopts;
2) pile vibrosinking is limited to the construction equipment requirement, generally is only applicable to the pile foundation of small building, and the section of stake is less, and length is lacked (in general 30 meters), and therefore the supporting capacity requirement that does not reach bridge pile foundation can not be applicable to the construction of bridge pile foundation.
Bored pile is the comparatively general a kind of pile foundation type of in the scope of city, constructing at present, and size all big (general diameter is more than 600 millimeters) has the low advantage of construction noise.Its main working procedure is boring and the mud off → clear end → descending reinforcing cage → cast in situs underwater concrete.The technical problem underlying that bored pile exists is:
1) speed of application is slow, and the construction of general 1 pile needs 2～3 days construction period;
2) high to the site operation technical requirements, the pile holes protecting wall of soft foundation has operation to cause the hole of collapsing accidentally easily when construction slightly, and generation causes the accident;
3) environment is had pollution, the mud that produces during construction can be to problems such as environment pollute;
4) concrete strength of pile foundation is not high, and the underwater casting concrete strength generally can only reach C30.
In sum, there is not good solution at present by large diameter bridge pile foundation on soft foundation, how realizing.
Therefore, those skilled in the art is devoted to develop a kind of simple in structure, soft foundation large-diameter concrete prefabricated subsection stake easily of constructing.
Summary of the invention
Because the above-mentioned defective of prior art, technical problem to be solved by this invention provides good, the little large-diameter concrete prefabricated subsection stake that is applicable to soft foundation of resistance of constructing of a kind of guidance quality.
For realizing above-mentioned purpose, the invention provides the stake of a kind of soft foundation large-diameter concrete prefabricated subsection, comprise a plurality of pile foundation sections, be fixedly connected sequentially between each said pile foundation sections; Said pile foundation sections is the hollow structure that inner chamber connects; In the inner chamber of said pile foundation sections, be provided with fetch earth passage and guide frame, said inner chamber is double does the said passage that fetches earth; Said guide frame comprises support arm and is used to wear the pilot hole of guide peg, also offers a plurality of through holes jet or water spray that are used on the sidewall of said pile foundation sections.
Preferably, the front end face of said pile foundation sections also is provided with the steel work shoe.
Preferably, said support arm is a steel construction piece, is fixedly connected with said pile foundation sections.
Preferably, said pile foundation sections is respectively arranged with said guide frame in the position near front end and rear end.
Preferably, the fixed connection between each said pile foundation sections is that prestressing force connects.
Beneficial effect of the present invention:
Soft foundation large-diameter concrete prefabricated subsection of the present invention stake is because the said structure design has advantages such as guidance quality is good, the construction resistance is little.
To the weak point of existing soft foundation pile foundation (especially large diameter pile foundation) technology, the soft foundation large-diameter concrete prefabricated subsection stake that the present invention proposes, can satisfy reach about 3 meters at diameter on the soft foundation, length reaches 50～60 meters pile foundation requirement.
Owing to adopted said structure design, soft foundation large-diameter concrete prefabricated subsection of the present invention stake can realize that the batch production beyond the job site is prefabricated, and in its construction, had following advantage:
1) adopt pile foundation prefabricate, on-the-spot mode of splicing, quickening speed of application, pile foundation quality guarantee easily.
2) adopt pile vibrosinking, realize low noise.
3) adopt the major diameter preformed pile, higher bearing capacity of pile foundation is provided.
4) take in the sinking process to fetch earth in the stake, the auxiliary mode of sinking of gas (water) curtain, reduce resistance, reduced the power requirement of equipment.
5) adopt guiding technique, realize accurate pile sinking.
6) guide peg is recyclable, recycle, low-carbon environment-friendly.
In sum; Soft foundation large-diameter concrete prefabricated subsection of the present invention stake is in its construction technology; Advantage with low noise; Realize prefabricated, major diameter, the low noise of soft foundation pile foundation construction, solved little, the heavy-polluted defective of construction noise of existing soft foundation preformed pile diameter.Simultaneously, solved also that the speed of existing construction process for bored pile is slow, construction quality produces shortcomings such as environment pollution when requiring high, construction.
Below will combine accompanying drawing that the technique effect of design of the present invention, concrete structure and generation is described further, to understand the object of the invention, characteristic and effect fully.
Description of drawings
Fig. 1 is the plan structure sketch map of soft foundation large-diameter concrete prefabricated subsection of the present invention stake one specific embodiment king-pile base pitch section.
Fig. 2 is an A-A portion sectional structure sketch map among Fig. 1.
Fig. 3 is the broken section structural representation of first section pile foundation sections in soft foundation large-diameter concrete prefabricated subsection stake one specific embodiment of the present invention.
Fig. 4 is the construction view of soft foundation large-diameter concrete prefabricated subsection of the present invention stake in construction.
Fig. 5 is the construction view of soft foundation large-diameter concrete prefabricated subsection of the present invention stake in construction.
Fig. 6 is the construction view of soft foundation large-diameter concrete prefabricated subsection of the present invention stake in construction.
Fig. 7 is the construction view of soft foundation large-diameter concrete prefabricated subsection of the present invention stake in construction.
Fig. 8 is the construction view of soft foundation large-diameter concrete prefabricated subsection of the present invention stake in construction.
The specific embodiment
Soft foundation large-diameter concrete prefabricated subsection of the present invention stake comprises a plurality of pile foundation sections, and being fixedly connected sequentially between each pile foundation sections is integrally formed.
In each pile foundation sections, except first section pile foundation sections, the form of structure of other pile foundation sections at different levels is all identical, the prefabricated and reduction die cost with the scale of being more convenient for.The wherein structure of a pile foundation sections below is detailed.
Like Fig. 1, shown in Figure 2, a pile foundation sections 1 is surrounded by sidewall 10 and forms inner chamber 2, and inner chamber 2 connects wherein, and the double passage that fetches earth of doing, and also is provided with guide frame in the inner chamber 2.
Particularly, the guide frame in the present embodiment comprises three support arms 11 that are uniformly distributed with in a circumferential direction, and is used to wear the pilot hole 12 of guide peg.Support arm 11 is a steel construction piece, with sidewall 10 fixed connections (or being cast in) of pile foundation sections 1.Guide peg is not the part of pile foundation sections 1, its structure and function, and back literary composition is stated in addition.
On the sidewall 10 of pile foundation sections 1, be reserved with vertical pipeline and a plurality of through hole 13 (technical term is " gas tabernacle ") that is used for jet or water spray, apply the gas or the water of high pressure with the aperture of pile lining from ground.
Be illustrated in figure 3 as the structural representation of first section pile foundation sections in the pile foundation sections of the present invention.The structure of the structure of first section pile foundation sections and pile foundation sections at different levels is basic identical; Institute's difference is, for ease of getting into the soil body, reduces the frictional resistance with the soil body; Front end face at first section pile foundation sections also is provided with inclined-plane 14, and the shoe that constitutes steel work is to decompose the frictional resistance of vertical direction.
The set-up mode on inclined-plane 14 can be the shape that extends out at inwall as shown in Figure 3, also can be not do illustrated trapezoidal at outer wall.
In addition, with reference to shown in Figure 3, in various embodiment, the pile foundation sections can be provided with aforesaid guide frame respectively in the position near front end and rear end, to obtain better guide effect.
In other embodiments, the form of guide frame also is not limited to above embodiment.For example, the quantity of support arm 11 also can be 2 or 4 or a plurality of (but the support arm of excessive number can influence the unimpeded of the passage that fetches earth), and the setting of guide frame also can be arranged on the middle part of pile foundation sections 1, and the quantity of pilot hole 12 also can be 2, or a plurality of, or the like.
Between each pile foundation sections; Comprise and first joint pile foundation sections between, can adopt existing prestressing force such as prestress wire or prestressed reinforcement to connect, or other connected modes commonly used in the art; To realize the fixed connection of sufficient intensity, especially shear strength.
Below briefly explain the construction technology of soft foundation large-diameter concrete prefabricated subsection of the present invention stake:
At first, in precasting yard preformed pile base pitch section, and be transported to the job site.The length of pile foundation sections is selected, can carry out plurality of segments according to the length of design pile body.The diameter of pile foundation sections is identical with the diameter of design pile body.
Then, place, stake position as shown in Figure 4, selected at the construction field (site) adopts static pressure method that guide peg 4 is sunk to below the construction plane of the soil body 5.Guide peg 4 is to spend good rigidity parts always, is used for the sinking direction at follow-up work step guiding pile foundation sections.
As shown in Figure 5, the pilot hole 12 of the first pile foundation sections 1A (being the said first joint pile foundation sections of preamble) is set on the guide peg 4 movably.
Adopt the method for pile vibrosinking, the first pile foundation sections 1A is sunk to the underground of the soil body 5 along guide peg 4 directions.
Especially, in pile vibrosinking, also adopt the fetch earth mode of operation, edge injection or water spray operation of limit to reduce the resistance of 5 pairs of pile foundation sections of soft foundation soil body 1A.
Particularly, the aforementioned operation of fetching earth is when pile vibrosinking, dig out or the inner chamber 2 of the hollow of sucking-off pile foundation sections 1A in the soil body.
Aforementioned jet or water spray operation; Be specially when pile vibrosinking; Through the soil body 5 jet or water sprays in 13 pairs of pile foundation sections of the through hole 1A on the pile foundation sections 1A sidewall outside, formation air curtain or water curtain between the outer wall of pile foundation sections 1A and the soil body 5 are to reduce frictional resistance between the two.
As shown in Figure 6, in the pilot hole of the second pile foundation sections 1B, wear guide peg 4.Adopt the prestress wire connected mode, the second pile foundation sections 1B and the first pile foundation sections 1A 3 are fixedly connected in the junction.
Repeat above-mentioned work step, adopt vibrosinking, and be aided with the operation of fetching earth, jet or water spray operation, sink to the underground of soil 5 together with the first pile foundation sections 1A until the second pile foundation sections 1B.
Afterwards, as shown in Figure 7, the prism of third order base pitch section of constructing successively 1C, the 4th pile foundation sections 1D.
According to the length requirement of design pile body, repeat above-mentioned work step construction to the N pile foundation sections 1N that satisfies the requirement of design pile body.As shown in Figure 8, make the pile foundation sections of requirement be sink to the underground of the soil body 5.
Afterwards, can also from the soil body 5, extract and reclaim guide peg 4.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can design according to the present invention make many modifications and variation.Therefore, all technician in the art all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology through the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (5)
1. soft foundation large-diameter concrete prefabricated subsection stake comprises a plurality of pile foundation sections, is fixedly connected sequentially between each said pile foundation sections; It is characterized in that: said pile foundation sections is the hollow structure that inner chamber connects; In the inner chamber of said pile foundation sections, be provided with fetch earth passage and guide frame, said inner chamber is double does the said passage that fetches earth; Said guide frame comprises support arm and is used to wear the pilot hole of guide peg, also offers a plurality of through holes jet or water spray that are used on the sidewall of said pile foundation sections.
2. soft foundation large-diameter concrete prefabricated subsection as claimed in claim 1 stake, it is characterized in that: the front end face of said pile foundation sections also is provided with the steel work shoe.
3. soft foundation large-diameter concrete prefabricated subsection as claimed in claim 1 stake is characterized in that: said support arm is a steel construction piece, is fixedly connected with said pile foundation sections.
4. soft foundation large-diameter concrete prefabricated subsection as claimed in claim 1 stake is characterized in that: said pile foundation sections is respectively arranged with said guide frame in the position near front end and rear end.
5. soft foundation large-diameter concrete prefabricated subsection as claimed in claim 1 stake is characterized in that: the fixed connection between each said pile foundation sections is that prestressing force connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110287962.6A CN102433872B (en) | 2011-09-26 | 2011-09-26 | Large-diameter concrete prefabricated segment pile of soft soil foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110287962.6A CN102433872B (en) | 2011-09-26 | 2011-09-26 | Large-diameter concrete prefabricated segment pile of soft soil foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102433872A true CN102433872A (en) | 2012-05-02 |
| CN102433872B CN102433872B (en) | 2014-05-14 |
Family
ID=45982202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110287962.6A Active CN102433872B (en) | 2011-09-26 | 2011-09-26 | Large-diameter concrete prefabricated segment pile of soft soil foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102433872B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638256A (en) * | 2017-02-14 | 2017-05-10 | 上海市城市建设设计研究总院（集团）有限公司 | Semi-integrated seamless bridge structure adaptive to soft foundation |
| CN106677073A (en) * | 2017-02-14 | 2017-05-17 | 上海市城市建设设计研究总院（集团）有限公司 | Construction method for semi-integral jointless bridge structure adaptive to soft soil foundation |
| CN114961106A (en) * | 2022-07-01 | 2022-08-30 | 中铁建工集团有限公司 | Ski field frame column structure and construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2540445Y (en) * | 2002-04-25 | 2003-03-19 | 李毓锦 | Reinforced concrete prefibricated pile |
| CN1425831A (en) * | 2003-01-10 | 2003-06-25 | 颜肖鸿 | Butt device for prefabricated concrete pile and its producing method |
| CN201089893Y (en) * | 2007-09-06 | 2008-07-23 | 铁道第四勘察设计院 | Foundation pit circle shield prefabricated driven pile |
| CN201276701Y (en) * | 2008-09-12 | 2009-07-22 | 黑龙江省建工集团有限责任公司 | Prefabricated assembly type concrete pile foundation |
| KR100938394B1 (en) * | 2009-04-17 | 2010-01-22 | (주)서현컨스텍 | Phc pile with imbeded steel pipe |
| CN202298603U (en) * | 2011-09-26 | 2012-07-04 | 上海市城市建设设计研究总院 | Large diameter concrete precast section pile suitable for soft soil foundation |
-
2011
- 2011-09-26 CN CN201110287962.6A patent/CN102433872B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2540445Y (en) * | 2002-04-25 | 2003-03-19 | 李毓锦 | Reinforced concrete prefibricated pile |
| CN1425831A (en) * | 2003-01-10 | 2003-06-25 | 颜肖鸿 | Butt device for prefabricated concrete pile and its producing method |
| CN201089893Y (en) * | 2007-09-06 | 2008-07-23 | 铁道第四勘察设计院 | Foundation pit circle shield prefabricated driven pile |
| CN201276701Y (en) * | 2008-09-12 | 2009-07-22 | 黑龙江省建工集团有限责任公司 | Prefabricated assembly type concrete pile foundation |
| KR100938394B1 (en) * | 2009-04-17 | 2010-01-22 | (주)서현컨스텍 | Phc pile with imbeded steel pipe |
| CN202298603U (en) * | 2011-09-26 | 2012-07-04 | 上海市城市建设设计研究总院 | Large diameter concrete precast section pile suitable for soft soil foundation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638256A (en) * | 2017-02-14 | 2017-05-10 | 上海市城市建设设计研究总院（集团）有限公司 | Semi-integrated seamless bridge structure adaptive to soft foundation |
| CN106677073A (en) * | 2017-02-14 | 2017-05-17 | 上海市城市建设设计研究总院（集团）有限公司 | Construction method for semi-integral jointless bridge structure adaptive to soft soil foundation |
| CN114961106A (en) * | 2022-07-01 | 2022-08-30 | 中铁建工集团有限公司 | Ski field frame column structure and construction method |
| CN114961106B (en) * | 2022-07-01 | 2023-09-15 | 中铁建工集团有限公司 | Ski field frame column structure and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102433872B (en) | 2014-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106351670B (en) | A kind of closed pre support tunnel structure | |
| CN208309568U (en) | A kind of prefabricated assembled ground-connecting-wall structure | |
| CN105298501A (en) | Construction method for auxiliary air duct structure of underground excavation station | |
| CN102733413A (en) | Method for controlling subsidence of operating subway tunnel | |
| CN104806274A (en) | Large-span long-distance underground space main body supporting integrated structure and construction method | |
| CN105736001A (en) | Construction method for building subway station through precast parts | |
| CN104653188A (en) | Method for arranging large-diameter shield receiving and originating well in underground-excavated air duct | |
| CN102691302A (en) | Concrete structure for supporting deep foundation pit | |
| CN108343450B (en) | Novel pipe curtain method working well reinforcing structure and reinforcing method | |
| CN112160755A (en) | Subway line construction method for expanding excavation station after shield tunnel construction in advance | |
| CN104532856A (en) | Fabricated lattice unit for foundation pit supporting and installation method | |
| CN102433872B (en) | Large-diameter concrete prefabricated segment pile of soft soil foundation | |
| CN102505688B (en) | Accurate guiding construction process of prefabricated pile sections | |
| CN205875193U (en) | Assembled stake integral structure | |
| CN105649073A (en) | Static root drilling type construction method for planting piles | |
| CN104074197A (en) | Large-diameter thin-walled tubular pile composite anchor rod type foundation pit support structure and construction method thereof | |
| CN202466575U (en) | Concave-convex square prefabricated concrete section pile | |
| CN202466573U (en) | Bamboo-shaped precast concrete section pile | |
| CN202298603U (en) | Large diameter concrete precast section pile suitable for soft soil foundation | |
| CN202466574U (en) | Gear-shaped precast concrete section pile | |
| CN102561335B (en) | Gear-shaped precast concrete segment pile | |
| CN106930768A (en) | Tunnel Construction and application | |
| CN205776160U (en) | A kind of underground connection wall structure | |
| CN102561321A (en) | Pile with concave-convex square prefabricated concrete segments | |
| CN211038701U (en) | Mine method subway interval air shaft with shield first and well second |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 200011 Tibet South Road, Shanghai, No. 1170, No. Patentee after: Shanghai urban construction design & Research Institute (Group) Co., Ltd. Address before: 200125 Dongfang Road, Shanghai, Pudong New Area, No. 3447 Patentee before: Shanghai Urban Construction Design & Research Institute |