CN104612133A - Concrete precast pile with mixed reinforcement of glass fiber-reinforced polymers and steel bars - Google Patents

Concrete precast pile with mixed reinforcement of glass fiber-reinforced polymers and steel bars Download PDF

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Publication number
CN104612133A
CN104612133A CN201510020857.4A CN201510020857A CN104612133A CN 104612133 A CN104612133 A CN 104612133A CN 201510020857 A CN201510020857 A CN 201510020857A CN 104612133 A CN104612133 A CN 104612133A
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glass fiber
reinforced polymer
reinforcement
pile
concrete precast
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CN201510020857.4A
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CN104612133B (en
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郭杨
吴平
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Anhui Institute of Architectural Research and Design
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Anhui Institute of Architectural Research and Design
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Abstract

The invention belongs to the technical field of concrete precast piles, and particularly relates to a concrete precast pile with mixed reinforcement glass fiber-reinforced polymers and steel bars. The concrete precast pile comprises a pile body with the two ends provided with anchor plates, wherein a reinforcement cage is arranged in the pile body and comprises prestressed reinforcements, the glass fiber-reinforced polymers and spiral stirrups, and the prestressed reinforcements and the glass fiber-reinforced polymers are distributed on the same cylindrical face with the central line of the pile body as the axis; the two ends of each prestressed reinforcement are fixedly connected with the anchor plates arranged at the two ends of the pile body respectively, the prestressed reinforcements and the spiral stirrups are welded together, and the glass fiber-reinforced polymers and the spiral stirrups are bound together. The concrete precast pile has the advantages of being high in bending resistance, good in durability, good in anti-seismic property and the like, and can be well applied to areas where the requirement for horizontal loads is high; meanwhile, the concrete precast pile is low in manufacturing cost, saves steel, and is convenient to construct and transport.

Description

The concrete precast pile of a kind of glass fiber-reinforced polymer and reinforcing bar hybrid reinforcement
Technical field
The invention belongs to concrete precast pile technical field, particularly the concrete precast pile of a kind of glass fiber-reinforced polymer and reinforcing bar hybrid reinforcement.
Background technology
Concrete precast pile, refers to a kind of elongate concrete prefabricated units adopting first prestressing force and centrifugal casting to make.For improving the performance of preformed pile, the cage of reinforcement be made up of the main muscle of reinforcing bar and spiral stirrup can be set in such.Concrete precast pile has that the raw quality of industrial scale is easy to ensure, bearing capacity of single pile is high, fast to engineering geologic condition strong adaptability, speed of application, the on-the-spot advantage such as pollution-free.But concrete precast pile also exists the endurance issues of pile body anti-bending strength poor and reinforced concrete structure, these defects seriously limit prestressed concrete pipe pile as the large-scale application of horizontal soldier pile in engineering.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, a kind of high bending resistance energy, good endurance, concrete precast pile that anti-seismic performance is good are provided, concrete precast pile in the present invention can be applicable to require high region to horizontal loading preferably, and the concrete precast pile namely in the present invention can use as horizontal soldier pile; Meanwhile, cost of the present invention low, save steel, construction and convenient transportation.
For achieving the above object, present invention employs following technical scheme:
The concrete precast pile of a kind of glass fiber-reinforced polymer and reinforcing bar hybrid reinforcement, comprise the pile body that two ends are provided with anchor plate, described pile body inside is provided with steel reinforcement framework cage, described steel reinforcement framework cage comprises prestressed reinforcement, glass fiber-reinforced polymer and spiral stirrup, and described prestressed reinforcement and glass fiber-reinforced polymer are arranged in on the pile body center line same face of cylinder that is axis jointly; The two ends of described prestressed reinforcement are fixedly connected with the anchor plate being arranged on pile body two ends respectively, and described prestressed reinforcement and spiral stirrup are welded together, and described glass fiber-reinforced polymer and spiral stirrup colligation link together.
Preferably, the quantity of described glass fiber-reinforced polymer is equal to or less than the quantity of prestressed reinforcement; When the quantity of glass fiber-reinforced polymer equals the quantity of prestressed reinforcement, the along the circumferential direction interleaved arrangement of glass fiber-reinforced polymer and prestressed reinforcement; When the quantity of glass fiber-reinforced polymer is less than the quantity of prestressed reinforcement, glass fiber-reinforced polymer is dispersed between prestressed reinforcement.
Preferably, described glass fiber-reinforced polymer is non-prestressing tendon.
Preferably, the quantity ratio between described prestressed reinforcement and glass fiber-reinforced polymer is 1.4 ~ 1.6.
Further, described steel reinforcement framework cage also comprises the welding be arranged on inside prestressed reinforcement and glass fiber-reinforced polymer and to put more energy into hoop, described prestressed reinforcement with weld hoop of putting more energy into and be welded together, described glass fiber-reinforced polymer binds round colligation and links together with welding to put more energy into.
Preferably, described steel reinforcement framework cage is also provided with colligation section reinforcing bar, described colligation section reinforcing bar and glass fiber-reinforced polymer parallel arrangement, and colligation section reinforcing bar and glass fiber-reinforced polymer are by together with tied silk colligation, described colligation section reinforcing bar and spiral stirrup or weld hoop of putting more energy into and be welded together.
Further, described steel reinforcement framework cage also comprises structure muscle, and described structure muscle and glass fiber-reinforced polymer or prestressed reinforcement colligation link together.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1), the present invention has set up the glass fiber-reinforced polymer that main muscle is crisscross arranged with reinforcing bar in steel reinforcement framework cage.The material of described glass fiber-reinforced polymer is glass fiber reinforced plastics (GFRP), glass fiber reinforced plastics is a kind of new material be made up of resin and glass fiber compound, and it has anti-corrosive properties relative to plain bars, tensile strength is high, shock resistance good, be convenient to cutting and the remarkable advantage such as lightweight.
The hybrid reinforcement design of presstressed reinforcing steel reinforcing bar and glass fiber-reinforced polymer is have employed in the present invention, wherein presstressed reinforcing steel reinforcing bar mainly bears vertical load, and glass fiber-reinforced polymer is non-prestressing tendon, mainly bear horizontal loading, thus prestressed reinforcement in the present invention and glass fiber-reinforced polymer are worked in coordination, concrete precast pile is made both to have had the high vertical bearing capacity of prestressed concrete soldier pile, the advantage of resistance to impact, there is again glass fiber-reinforced polymer self tensile strength high simultaneously, corrosion resistance is good, the advantages such as shock resistance is strong and lightweight, therefore the concrete precast pile in the present invention significantly can improve the horizontal bearing capacity of prestressed concrete preformed pile, the characteristic such as anti-bending bearing capacity and durability, even can meet compared with the performance requirement of high seismic fortification intensity area to pile foundation.
2), applied range of the present invention, concrete strength of pile is high, and Compressive Bearing Capacity is high; Hybrid reinforcement designs, and drastically increases pile body anti-bending strength; The present invention can be applicable to the deep foundation pit support of industry and civilian construction, subway platform, the side slope maintenance of the infrastructure such as Ye Ke highway, railway and bridge and the field extensive use such as bridge pier foundation in construction duration.Because the corrosion resistance of glass fiber-reinforced polymer is good, soldier pile of the present invention also can in field extensive uses such as harbour foundation construction, bridge spanning the sea foundation constructions.
3), present invention employs the combination of glass fiber-reinforced polymer and prestressed reinforcement, thus the cost of concrete precast pile is reduced, also save great deal of steel.
4), the present invention constructs, produces and transport more for convenience.Current construction of prefabricated piles technology, production technology and transport technique are very ripe, can directly be applied in the present invention completely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the cross-sectional profile schematic diagram of Fig. 1.
Fig. 3 is the arrangement schematic diagram of 14 presstressed reinforcing steels and 10 glass fiber-reinforced polymer.
Fig. 4 is glass fiber-reinforced polymer in the present invention and weld the syndeton schematic diagram of putting more energy into and binding round.
Fig. 5 is anchor system schematic diagram.
In figure, the implication of label symbol is as follows:
10-pile body, 11-anchor plate, 110-anchor system, 111-anchor hole
112-cross muscle groove 113-stretch-draw hole 12-pile protection hoop
20-steel reinforcement framework cage, 21-prestressed reinforcement, 22-glass fiber-reinforced polymer
23-spiral stirrup 24-welding is put more energy into hoop 25-colligation section reinforcing bar 26-tied silk
Detailed description of the invention
Below in conjunction with the accompanying drawing in the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.
As shown in Figure 1, the concrete precast pile of a kind of glass fiber-reinforced polymer and reinforcing bar hybrid reinforcement, comprise the pile body 10 that two ends are provided with anchor plate 11, described pile body 10 inside is provided with steel reinforcement framework cage 20, described steel reinforcement framework cage 20 comprises prestressed reinforcement 21, glass fiber-reinforced polymer 22 and spiral stirrup 23, described prestressed reinforcement 21 and glass fiber-reinforced polymer 22 are set parallel to each other, and the two is arranged in on the pile body center line same face of cylinder that is axis jointly; The length of described prestressed reinforcement 21 is greater than the length of glass fiber-reinforced polymer 22, the two ends of prestressed reinforcement 21 are fixedly connected with the anchor plate 11 being arranged on pile body 10 two ends respectively, described prestressed reinforcement 21 is welded together with spiral stirrup 23, and described glass fiber-reinforced polymer 22 links together with spiral stirrup 23 colligation; Described glass fiber-reinforced polymer 22 is non-prestressing tendon.
Pile body in Fig. 1 is hollow, and certain pile body also can adopt solid.
When prestressed reinforcement 21 and glass fiber-reinforced polymer 22 hybrid reinforcement, the quantity of the two can be chosen with reference to the numerical value in table 1:
Table 1 arrangement of reinforcement list
When the quantity of glass fiber-reinforced polymer 22 equals the quantity of prestressed reinforcement 21, the two can be arranged according to mode as shown in Figure 2, and namely glass fiber-reinforced polymer 22 and prestressed reinforcement 21 are along the circumferential direction spaced staggered; When the quantity of glass fiber-reinforced polymer 22 is less than the quantity of prestressed reinforcement 21, the two can be arranged according to mode as shown in Figure 3, and namely glass fiber-reinforced polymer 22 is dispersed between prestressed reinforcement 21.
As shown in Figure 2, described steel reinforcement framework cage 20 also comprises the welding be arranged on inside prestressed reinforcement 21 and glass fiber-reinforced polymer 22 and to put more energy into hoop 24, described prestressed reinforcement 21 with weld hoop 24 of putting more energy into and be welded together, described glass fiber-reinforced polymer 22 with weld hoop 24 colligation of putting more energy into and link together.
As shown in Figure 4, described steel reinforcement framework cage 20 is also provided with colligation section reinforcing bar 25, described colligation section reinforcing bar 25 and glass fiber-reinforced polymer 22 parallel arrangement, and colligation section reinforcing bar 25 and glass fiber-reinforced polymer 22 are by together with tied silk 26 colligation, described colligation section reinforcing bar 25 and spiral stirrup 23 or weld hoop 24 of putting more energy into and be welded together.
Certainly, described steel reinforcement framework cage 20 can also be provided with structure muscle, and described structure muscle and glass fiber-reinforced polymer or prestressed reinforcement colligation link together.
Described prestressed reinforcement 21 is when anchoring, and the end winding support of prestressed reinforcement 21 is on the anchor system 110 of anchor plate 11, and as shown in Figure 5, described anchor system 11 is made up of anchor hole 111, excessively muscle groove 112, stretch-draw hole 113; The end of prestressed reinforcement 21 is passed stretch-draw hole 113 successively, is crossed muscle groove 112 and be fixed on anchor hole 111, to realize the connection with anchor plate 11.

Claims (7)

1. the concrete precast pile of a glass fiber-reinforced polymer and reinforcing bar hybrid reinforcement, comprise the pile body (10) that two ends are provided with anchor plate (11), described pile body (10) inside is provided with steel reinforcement framework cage (20), it is characterized in that: described steel reinforcement framework cage (20) comprises prestressed reinforcement (21), glass fiber-reinforced polymer (22) and spiral stirrup (23), described prestressed reinforcement (21) and glass fiber-reinforced polymer (22) are arranged in on the pile body center line same face of cylinder that is axis jointly; The two ends of described prestressed reinforcement (21) are fixedly connected with the anchor plate (11) being arranged on pile body (10) two ends respectively, described prestressed reinforcement (21) and spiral stirrup (23) are welded together, and described glass fiber-reinforced polymer (22) and spiral stirrup (23) colligation link together.
2. the concrete precast pile of a kind of glass fiber-reinforced polymer according to claim 1 and reinforcing bar hybrid reinforcement, is characterized in that: the quantity of described glass fiber-reinforced polymer (22) is equal to or less than the quantity of prestressed reinforcement (21); When the quantity of glass fiber-reinforced polymer (22) equals the quantity of prestressed reinforcement (21), the along the circumferential direction interleaved arrangement of glass fiber-reinforced polymer (22) and prestressed reinforcement (21); When the quantity of glass fiber-reinforced polymer (22) is less than the quantity of prestressed reinforcement (21), glass fiber-reinforced polymer (22) is dispersed between prestressed reinforcement (21).
3. the concrete precast pile of a kind of glass fiber-reinforced polymer according to claim 1 and reinforcing bar hybrid reinforcement, is characterized in that: described glass fiber-reinforced polymer (22) is non-prestressing tendon.
4. the concrete precast pile of a kind of glass fiber-reinforced polymer according to claim 2 and reinforcing bar hybrid reinforcement, is characterized in that: the quantity ratio between described prestressed reinforcement (21) and glass fiber-reinforced polymer (22) is 1.4 ~ 1.6.
5. a kind of glass fiber-reinforced polymer according to any one of Claims 1 to 4 and the concrete precast pile of reinforcing bar hybrid reinforcement, it is characterized in that: described steel reinforcement framework cage (20) also comprises the welding being arranged on prestressed reinforcement (21) and glass fiber-reinforced polymer (22) inner side and to put more energy into hoop (24), described prestressed reinforcement (21) binds round (24) and is welded together with welding to put more energy into, and described glass fiber-reinforced polymer (22) binds round (24) colligation and links together with welding to put more energy into.
6. the concrete precast pile of a kind of glass fiber-reinforced polymer according to claim 5 and reinforcing bar hybrid reinforcement, it is characterized in that: described steel reinforcement framework cage (20) is also provided with colligation section reinforcing bar (25), described colligation section reinforcing bar (25) and glass fiber-reinforced polymer (22) parallel arrangement, and colligation section reinforcing bar (25) and glass fiber-reinforced polymer (22) are by together with tied silk (26) colligation, described colligation section reinforcing bar (25) and spiral stirrup (23) or weld is put more energy into and is bound round (24) and be welded together.
7. the concrete precast pile of a kind of glass fiber-reinforced polymer according to claim 5 and reinforcing bar hybrid reinforcement, it is characterized in that: described steel reinforcement framework cage (20) also comprises structure muscle, described structure muscle and glass fiber-reinforced polymer or prestressed reinforcement colligation link together.
CN201510020857.4A 2015-01-15 2015-01-15 The concrete precast pile of a kind of glass fibre muscle and reinforcing bar hybrid reinforcement Active CN104612133B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106087979A (en) * 2016-07-28 2016-11-09 安徽省建筑科学研究设计院 A kind of steel reinforcement framework cage in concrete precast pile
CN106192993A (en) * 2016-07-14 2016-12-07 河海大学 Modified GFRP muscle and reinforcing bar Concrete Structure anticorrosion stake and preparation method
CN106869137A (en) * 2017-02-27 2017-06-20 淮北宇鑫新型材料有限公司 One kind mixing steel reinforcement cage and foundation pit supporting pile

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JPH0369715A (en) * 1989-08-07 1991-03-26 Kajima Corp Corrosion resistant pile and method of execution of work thereof
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CN204475313U (en) * 2015-01-15 2015-07-15 安徽省建筑科学研究设计院 The concrete precast pile of a kind of glass fiber-reinforced polymer and reinforcing bar hybrid reinforcement

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CN204475313U (en) * 2015-01-15 2015-07-15 安徽省建筑科学研究设计院 The concrete precast pile of a kind of glass fiber-reinforced polymer and reinforcing bar hybrid reinforcement

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106192993A (en) * 2016-07-14 2016-12-07 河海大学 Modified GFRP muscle and reinforcing bar Concrete Structure anticorrosion stake and preparation method
CN106087979A (en) * 2016-07-28 2016-11-09 安徽省建筑科学研究设计院 A kind of steel reinforcement framework cage in concrete precast pile
CN106087979B (en) * 2016-07-28 2019-04-23 安徽省建筑科学研究设计院 A kind of steel reinforcement framework cage in concrete precast pile
CN106869137A (en) * 2017-02-27 2017-06-20 淮北宇鑫新型材料有限公司 One kind mixing steel reinforcement cage and foundation pit supporting pile

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