CN101851916A - Concrete precast pile - Google Patents
Concrete precast pile Download PDFInfo
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- CN101851916A CN101851916A CN201010188420A CN201010188420A CN101851916A CN 101851916 A CN101851916 A CN 101851916A CN 201010188420 A CN201010188420 A CN 201010188420A CN 201010188420 A CN201010188420 A CN 201010188420A CN 101851916 A CN101851916 A CN 101851916A
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Abstract
The invention provides a concrete precast pile which comprises concrete and at least one pre-fabricated steel reinforcing bar cage, the pre-fabricated steel reinforcing bar cage comprises a main rib which extends along the length direction of the concrete precast pile and a stirrup which goes around the main rib in a spiral shape, wherein at least part of the main rib is a non-pre-stressed steel reinforcing bar. In the concrete precast pile, at least part of the main rib is the non-pre-stressed steel reinforcing bar. The anti-dending capacity and anti-shear bearing capability performance of the reinforcing partial pre-stress concrete precast pile are much higher than those of the traditional pre-stressed concrete precast piles, and simultaneously the ductility and the energy consumption performance of the pile are also greatly improved.
Description
Technical field
The present invention relates to be mainly used in the building field a kind of stake of base pit engineering, particularly a kind of concrete precast pile, this preformed pile can be the concrete precast piles of a kind of solid pile or hollow pile, side's stake or pile tube or any shape.
Background technology
In the middle of existing building trade, Foundation Design is very important partitioned project in the construction work.Because brittle fracture, the construction wrong of pile foundation and the anti-bending bearing capacity and the shear-carrying capacity of preformed pile itself of pile foundation material do not reach requirement, cause some engineering accidents easily.Simultaneously, because the requirements for fortification against earthquake of pile foundation is also had higher requirement for the ductility and the energy-dissipating property of existing preformed pile.
The lifting that the pretensioning prestressed concrete pile of existing building standard, presstressed reinforcing steel are mainly used to satisfy preformed pile requires the load that produced, but but can not provide bearing capacity, makes that the effect that presstressed reinforcing steel played is limited; In addition, because prestressed concrete pile is a prestressed member, ductility is very low, and brittle fracture easily takes place, and can't resist bigger pulling force and flexural stress, a little less than the horizontal bearing capacity relative thin of therefore existing pretensioning prestressed concrete pile.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of concrete precast pile, to reduce or to avoid problem noted earlier.
Specifically, the objective of the invention is to provide a kind of good working ductility, anti-bending bearing capacity and shear-carrying capacity high concrete precast pile in order to remedy above deficiency.
For solving the problems of the technologies described above, the present invention proposes a kind of concrete precast pile, described concrete precast pile is made of concrete and at least one precast reinforced cage, described precast reinforced cage comprises the main muscle that extends along described concrete precast pile length direction and the spiral stirrup around described main muscle, wherein, the described main muscle of at least a portion is a nonprestressed reinforcement.
Preferably, all described main muscle is a nonprestressed reinforcement.
Preferably, described nonprestressed reinforcement is the regular screw threads reinforcing bar.
Preferably, described concrete precast pile comprises the precast reinforced cage of at least two arranged concentric.
Preferably, described concrete precast pile is a hollow square pile, and it comprises the nonprestressed reinforcement cage and the prestressed reinforcement cage that is positioned at inboard and circular arrangement that are positioned at the outside and square arrangement; Wherein, the whole main muscle of described nonprestressed reinforcement cage is a nonprestressed reinforcement, and the whole main muscle of described prestressed reinforcement cage is a prestressed reinforcement.
Preferably, described concrete precast pile is a hollow shell pill, and it comprises the nonprestressed reinforcement cage and the prestressed reinforcement cage that is positioned at inboard and circular arrangement that are positioned at the outside and circular arrangement; Wherein, the whole main muscle of described nonprestressed reinforcement cage is a nonprestressed reinforcement, and the whole main muscle of described prestressed reinforcement cage is a prestressed reinforcement.
Preferably, the main muscle of described at least one precast reinforced cage of described concrete precast pile is made of prestressed reinforcement and nonprestressed reinforcement, and wherein, described prestressed reinforcement and described nonprestressed reinforcement are arranged at interval.
In the precast concrete preformed pile of the present invention, at least a portion master's muscle is a non-prestressing tendon.Wherein, presstressed reinforcing steel is mainly used to satisfy the lifting requirement of preformed pile, under the prerequisite that satisfies the lifting requirement, add and join non-prestressing tendon, can improve the anti-bending bearing capacity and the ductile performance of this preformed pile like this, experiment shows that the anti-bending bearing capacity and the shear-carrying capacity performance of this kind enhancement mode partially prestressed concrete preformed pile have improved much than original prestressed concrete preformed pile, and the ductility and the energy-dissipating property of stake also are greatly improved simultaneously.In addition, in precast concrete preformed pile of the present invention, owing to join presstressed reinforcing steel and this reinforcing bar of two types of regular screw threads reinforcing bar in the partially prestressed concrete preformed pile, stirrup has also adopted the twice hoop, has strengthened the shear-carrying capacity of this preformed pile greatly.
Description of drawings
The following drawings only is intended to the present invention done and schematically illustrates and explain, not delimit the scope of the invention.Wherein,
Fig. 1 shows is cross-sectional view according to the concrete precast pile of a specific embodiment of the present invention;
Fig. 2 shows is cross-sectional view according to the concrete precast pile of another specific embodiment of the present invention;
That Fig. 3 shows is a kind of improved embodiment on basis embodiment illustrated in fig. 1;
That Fig. 4 shows is a kind of improved embodiment on basis embodiment illustrated in fig. 2;
That Fig. 5 shows is a kind of improved embodiment on basis embodiment illustrated in fig. 3;
That Fig. 6 shows is a kind of improved embodiment on basis embodiment illustrated in fig. 4.
The specific embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast description of drawings the specific embodiment of the present invention.Wherein, identical parts adopt identical label.
Fig. 1 shows is cross-sectional view according to the concrete precast pile of a specific embodiment of the present invention, concrete precast pile shown in the figure 1 is a hollow square pile, that is with regard to its profile, this concrete precast pile 1 has the cross section that is square substantially, and its center has a through hole 2 of (perpendicular to the paper direction) extension along its length.
Certainly, it will be appreciated by those skilled in the art that the present invention is not limited only to this, this concrete precast pile also can be known solid pile etc. for the hollow pile of diamond-shaped cross-section, circular cross-section or any other cross sectional shape.For example, Fig. 2 promptly shows is the specific embodiment of a similar concrete precast pile shown in Figure 1, concrete precast pile 1 shown in Figure 2 is a pile tube, and it has rounded substantially cross section, and the center has a through hole 2 of (perpendicular to the paper direction) extension along its length.
Still referring to Fig. 1, concrete precast pile in the present embodiment is made of concrete 3 and a precast reinforced cage 4, wherein, precast reinforced cage 4 comprises the stirrup 6 that centers on main muscle 5 along the main muscle 5 and the spiral of concrete precast pile 1 length direction (perpendicular to the paper direction) extension.What be different from prior art especially is, among the present invention, at least a portion master's muscle 5 is a nonprestressed reinforcement 51, and in a specific embodiment, described nonprestressed reinforcement is the regular screw threads reinforcing bar.
Specific among Fig. 1 as seen, precast reinforced cage 4 in the present embodiment comprises eight main muscle 5 that are square and arrange, four main muscle wherein are nonprestressed reinforcement 51, and other four main muscle are prestressed reinforcement 52, and nonprestressed reinforcement 51 and prestressed reinforcement 52 spaces are arranged.
Same, embodiment illustrated in fig. 2 and embodiment illustrated in fig. 1 identical substantially, wherein concrete precast pile 1 is made of concrete 3 and a precast reinforced cage 4, and precast reinforced cage 4 comprises eight main muscle 5 extending along concrete precast pile 1 length direction (perpendicular to the paper direction) and the spiral stirrup 6 around main muscle 5.Wherein four main muscle are nonprestressed reinforcement 51, and other four main muscle are prestressed reinforcement 52, and nonprestressed reinforcement 51 and prestressed reinforcement 52 spaces are arranged.
That Fig. 3 shows is a kind of improved embodiment on basis embodiment illustrated in fig. 1, and similarly, that Fig. 4 shows is a kind of improved embodiment on basis embodiment illustrated in fig. 2.Referring to Fig. 3, its dependency structure is identical to those shown in Fig. 1 basically, and difference is that whole eight main muscle shown in Figure 3 all are nonprestressed reinforcements 51.Similarly, dependency structure shown in Figure 4 is basically with identical shown in Fig. 2, and difference is that whole eight main muscle shown in Figure 4 all are nonprestressed reinforcements 51.
That Fig. 5 shows is a kind of improved embodiment on basis embodiment illustrated in fig. 3, and similarly, that Fig. 6 shows is a kind of improved embodiment on basis embodiment illustrated in fig. 4.Referring to Fig. 5, its dependency structure is basically with identical shown in Fig. 3, difference is, comprise two precast reinforced cages 41,42 in embodiment illustrated in fig. 5, these two precast reinforced cages 41,42 are arranged concentric substantially, wherein be positioned at precast reinforced cage 41 layout that is square in the outside, the whole four main muscle that constitute this precast reinforced cage 41 all are nonprestressed reinforcements 51; And being positioned at inboard precast reinforced cage 42 rounded layouts, the whole eight main muscle that constitute this precast reinforced cage 42 all are prestressed reinforcements 52.
Similarly, dependency structure shown in Figure 6 is basically with identical shown in Fig. 3, difference is, comprise two precast reinforced cages 41,42 in embodiment illustrated in fig. 6, these two precast reinforced cages 41,42 are arranged concentric substantially, wherein be positioned at the precast reinforced cage 41 rounded layouts in the outside, the whole four main muscle that constitute this precast reinforced cage 41 all are nonprestressed reinforcements 51; And being positioned at inboard precast reinforced cage 42 rounded layouts, the whole eight main muscle that constitute this precast reinforced cage 42 all are prestressed reinforcements 52.
Certainly, it will be appreciated by those skilled in the art that the present invention can also further improve on Fig. 5,6 basis.For example, can the precast reinforced cage 41 in the outside shown in Fig. 5 is similar shown in Figure 1, eight main muscle are set, wherein four main muscle are nonprestressed reinforcement 51, other four main muscle are prestressed reinforcement 52, and inboard precast reinforced cage 42 keeps the type among Fig. 5 constant; Perhaps the precast reinforced cage 41,42 of the outside, inboard is all similar shown in Figure 1, and eight main muscle are set, and wherein four main muscle are nonprestressed reinforcement 51, and other four main muscle are prestressed reinforcement 52.
Certainly, it should be understood by those skilled in the art that the concrete form of reinforcement among the present invention can require to be adjusted according to reality, for example, the reinforcing cage in the outside can be set to the prestressed reinforcement cage, and inboard reinforcing cage can be set to the nonprestressed reinforcement cage; And the number of the main muscle that each reinforcing cage comprised also can require to be adjusted according to reality.
In the precast concrete preformed pile of the present invention, at least a portion master's muscle is a non-prestressing tendon.Wherein, presstressed reinforcing steel is mainly used to satisfy the lifting requirement of preformed pile, under the prerequisite that satisfies the lifting requirement, add and join non-prestressing tendon, can improve the anti-bending bearing capacity and the ductile performance of this preformed pile like this, experiment shows that the anti-bending bearing capacity and the shear-carrying capacity performance of this kind enhancement mode partially prestressed concrete preformed pile have improved much than original prestressed concrete preformed pile, and the ductility and the energy-dissipating property of stake also are greatly improved simultaneously.In addition, in precast concrete preformed pile of the present invention, owing to join presstressed reinforcing steel and this reinforcing bar of two types of regular screw threads reinforcing bar in the partially prestressed concrete preformed pile, stirrup has also adopted the twice hoop, has strengthened the shear-carrying capacity of this preformed pile greatly.
Though it will be appreciated by those skilled in the art that the present invention is that mode according to a plurality of embodiment is described, and is not that each embodiment only comprises an independently technical scheme.Narration like this only is for the sake of clarity in the manual; those skilled in the art should make manual as a wholely to be understood, and regard technical scheme related among each embodiment as the mode that can be combined into different embodiment mutually understand protection scope of the present invention.
The above only is the schematic specific embodiment of the present invention, is not in order to limit scope of the present invention.Any those skilled in the art, equivalent variations, the modification of being done under the prerequisite that does not break away from design of the present invention and principle and combining all should belong to the scope of protection of the invention.
Claims (7)
1. concrete precast pile, described concrete precast pile is made of concrete and at least one precast reinforced cage, described precast reinforced cage comprises the main muscle that extends along described concrete precast pile length direction and the spiral stirrup around described main muscle, it is characterized in that the described main muscle of at least a portion is a nonprestressed reinforcement.
2. concrete precast pile according to claim 1 is characterized in that, all described main muscle is a nonprestressed reinforcement.
3. concrete precast pile according to claim 1 and 2 is characterized in that, described nonprestressed reinforcement is the regular screw threads reinforcing bar.
4. concrete precast pile according to claim 1 is characterized in that, described concrete precast pile comprises the precast reinforced cage of at least two arranged concentric.
5. concrete precast pile according to claim 1 is characterized in that, described concrete precast pile is a hollow square pile, and it comprises the nonprestressed reinforcement cage and the prestressed reinforcement cage that is positioned at inboard and circular arrangement that are positioned at the outside and square arrangement; Wherein, the whole main muscle of described nonprestressed reinforcement cage is a nonprestressed reinforcement, and the whole main muscle of described prestressed reinforcement cage is a prestressed reinforcement.
6. concrete precast pile according to claim 1 is characterized in that, described concrete precast pile is a hollow shell pill, and it comprises the nonprestressed reinforcement cage and the prestressed reinforcement cage that is positioned at inboard and circular arrangement that are positioned at the outside and circular arrangement; Wherein, the whole main muscle of described nonprestressed reinforcement cage is a nonprestressed reinforcement, and the whole main muscle of described prestressed reinforcement cage is a prestressed reinforcement.
7. concrete precast pile according to claim 1, it is characterized in that, the main muscle of described at least one precast reinforced cage of described concrete precast pile is made of prestressed reinforcement and nonprestressed reinforcement, and wherein, described prestressed reinforcement and described nonprestressed reinforcement are arranged at interval.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010188420 CN101851916B (en) | 2010-06-01 | 2010-06-01 | Concrete precast pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010188420 CN101851916B (en) | 2010-06-01 | 2010-06-01 | Concrete precast pile |
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| CN101851916A true CN101851916A (en) | 2010-10-06 |
| CN101851916B CN101851916B (en) | 2013-10-16 |
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| CN 201010188420 Expired - Fee Related CN101851916B (en) | 2010-06-01 | 2010-06-01 | Concrete precast pile |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155013A (en) * | 2011-01-26 | 2011-08-17 | 江苏建华管桩有限公司 | Pre-tensioning prestressed concrete dynamic load pile |
| CN102166788A (en) * | 2011-01-26 | 2011-08-31 | 江苏建华管桩有限公司 | Production method of pretensioning prestressed concrete dynamic load piles |
| CN102373803A (en) * | 2011-11-15 | 2012-03-14 | 天津大学 | Novel precast concrete pipe die and construction method thereof |
| CN102490266A (en) * | 2011-12-14 | 2012-06-13 | 盐城市同力新型建材有限公司 | Method for preparing pre-tensioned prestressing concrete pile connected with basic bearing platform in non-welding mode |
| CN102561322A (en) * | 2012-03-09 | 2012-07-11 | 天津建城基业集团有限公司 | Anti-bending and anti-shearing enhanced pipe pile |
| CN102776880A (en) * | 2012-08-24 | 2012-11-14 | 占昌成 | Prefabricated concrete irregular-shaped pile |
| CN102966092A (en) * | 2012-10-25 | 2013-03-13 | 国鼎(南通)管桩有限公司 | TSC (Two Subcarrier System) tube pile provided with nonprestressed reinforcement cage |
| CN103132506A (en) * | 2011-11-29 | 2013-06-05 | 上海市基础工程有限公司 | Processing and manufacturing method for bored pile double-layer strengthened hoop steel bar cage |
| CN103572753A (en) * | 2012-08-09 | 2014-02-12 | 上海中技桩业股份有限公司 | Partial prestressed concrete hollow triangular pile |
| CN103572754A (en) * | 2012-08-09 | 2014-02-12 | 上海中技桩业股份有限公司 | Partial prestressed concrete hexagonal hollow pile |
| CN103572752A (en) * | 2012-08-09 | 2014-02-12 | 上海中技桩业股份有限公司 | Partial prestressed concrete bamboo joint pile |
| CN103590397A (en) * | 2012-08-13 | 2014-02-19 | 上海中技桩业股份有限公司 | Partially prestressed and partially non-prestressed concrete hollow pile |
| CN105155513A (en) * | 2015-08-13 | 2015-12-16 | 刘文海 | Prefabricated I-type pile and production method thereof |
| CN112459048A (en) * | 2020-11-24 | 2021-03-09 | 嘉兴市康立德构件股份有限公司 | High-efficiency energy-saving concrete pipe pile and forming process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102166788A (en) * | 2011-01-26 | 2011-08-31 | 江苏建华管桩有限公司 | Production method of pretensioning prestressed concrete dynamic load piles |
| CN102155013A (en) * | 2011-01-26 | 2011-08-17 | 江苏建华管桩有限公司 | Pre-tensioning prestressed concrete dynamic load pile |
| CN102373803A (en) * | 2011-11-15 | 2012-03-14 | 天津大学 | Novel precast concrete pipe die and construction method thereof |
| CN103132506B (en) * | 2011-11-29 | 2015-11-25 | 上海市基础工程集团有限公司 | Bored pile double-deck Reinforced Hoop reinforcing cage processing and fabricating method |
| CN103132506A (en) * | 2011-11-29 | 2013-06-05 | 上海市基础工程有限公司 | Processing and manufacturing method for bored pile double-layer strengthened hoop steel bar cage |
| CN102490266B (en) * | 2011-12-14 | 2013-10-16 | 盐城市同力新型建材有限公司 | Method for preparing pre-tensioned prestressing concrete pile connected with basic bearing platform in non-welding mode |
| CN102490266A (en) * | 2011-12-14 | 2012-06-13 | 盐城市同力新型建材有限公司 | Method for preparing pre-tensioned prestressing concrete pile connected with basic bearing platform in non-welding mode |
| CN102561322A (en) * | 2012-03-09 | 2012-07-11 | 天津建城基业集团有限公司 | Anti-bending and anti-shearing enhanced pipe pile |
| CN103572753B (en) * | 2012-08-09 | 2016-02-03 | 上海中技桩业股份有限公司 | A kind of partially prestressed concrete hollow triangular pile |
| CN103572753A (en) * | 2012-08-09 | 2014-02-12 | 上海中技桩业股份有限公司 | Partial prestressed concrete hollow triangular pile |
| CN103572754A (en) * | 2012-08-09 | 2014-02-12 | 上海中技桩业股份有限公司 | Partial prestressed concrete hexagonal hollow pile |
| CN103572752A (en) * | 2012-08-09 | 2014-02-12 | 上海中技桩业股份有限公司 | Partial prestressed concrete bamboo joint pile |
| CN103572752B (en) * | 2012-08-09 | 2016-03-30 | 上海中技桩业股份有限公司 | A kind of partially prestressed concrete bamboo joint pile |
| CN103572754B (en) * | 2012-08-09 | 2016-03-30 | 上海中技桩业股份有限公司 | A kind of partially prestressed concrete hexagonal hollow pile |
| CN103590397A (en) * | 2012-08-13 | 2014-02-19 | 上海中技桩业股份有限公司 | Partially prestressed and partially non-prestressed concrete hollow pile |
| CN103590397B (en) * | 2012-08-13 | 2016-03-30 | 上海中技桩业股份有限公司 | A kind of partial prestressing part non-prestressed concrete hollow square pile |
| CN102776880A (en) * | 2012-08-24 | 2012-11-14 | 占昌成 | Prefabricated concrete irregular-shaped pile |
| CN102966092A (en) * | 2012-10-25 | 2013-03-13 | 国鼎(南通)管桩有限公司 | TSC (Two Subcarrier System) tube pile provided with nonprestressed reinforcement cage |
| CN105155513A (en) * | 2015-08-13 | 2015-12-16 | 刘文海 | Prefabricated I-type pile and production method thereof |
| CN112459048A (en) * | 2020-11-24 | 2021-03-09 | 嘉兴市康立德构件股份有限公司 | High-efficiency energy-saving concrete pipe pile and forming process |
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| CN101851916B (en) | 2013-10-16 |
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