CN208844550U

CN208844550U - A kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure

Info

Publication number: CN208844550U
Application number: CN201821350776.6U
Authority: CN
Inventors: 杨志坚; 雷岳强; 韩嘉明; 孙红; 胡嘉飞; 张明远
Original assignee: Shenyang Jianzhu University
Current assignee: Shenyang Jianzhu University
Priority date: 2018-08-22
Filing date: 2018-08-22
Publication date: 2019-05-10
Anticipated expiration: 2028-08-22

Abstract

The utility model discloses a kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structures, it include that the FRP pipe as lateral wall, the PHC tubular pole core pipe as inner sidewall and the concrete layer being cast between FRP pipe and PHC tubular pole core pipe, FRP pipe, PHC tubular pole core pipe and concrete layer form hollow shell pill.The utility model on the outside of PHC tubular pole core pipe by coating FRP pipe, to improve the corrosion resistance of structure, and FRP pipe and fill concrete are coated on the outside of PHC tubular pole core pipe to which the core concrete to structure applies lateral confinement, concrete is set to be in three pressured states, improve the bearing capacity and bending stiffness of tubular pole, the development for having delayed its longitudinal microcrack, to improve its endurance quality and anti-seismic performance.

Description

A kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure

Technical field

The utility model relates to ocean engineering etc. other to corrosion resistance and the higher pile foundation engineering of life requirement, especially It is to be related to a kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure.

Background technique

In practical projects, application of the PHC tubular pole in the engineering constructions such as high level, bridge, harbour, harbour is more and more wider It is general.Technical staff has been generally acknowledged that the density of centrifugal concrete is good, concrete strength is high, and the durability of tubular pole can satisfy completely The requirement of corrosion resistance medium, designer seldom considers the requirement of tubular pole under the conditions of specific corrosion type, to make Obtaining Pipe Pile Engineering has durability hidden danger.By taking Construction of Hangzhou Bay Cross-sea Bridge as an example, it uses " collection pile pier " design concept, as Each bridge pier of foundation structure is made of 10-12 steel-pipe pile.And high temperature, oxygen saturation and seawater spluttering can cause in splash zone Serious corrosion condition.The corrosion rate in the Cook bay of splash zone such as Alaska can reach annual 900 microns.As being difficult Maintenance, non-exchange, service phase are more than 100 years underwater components, the Long-effect corrosion-resistant of foundation structure in the seawater and comprehensive Corrosion control scheme becomes urgent problem to be solved.Earlier industry developed country bridge steel pipe column is mainly by more than reserved steel corrosion Amount, reaches projected life by corrosion allowance.But this method wastes a large amount of steels, manufacture and mounting cost height, construction period It is long, it is not the method for economically feasible, long-acting corrosion control corrosion.And Hangzhou Gulf Great Bridge uses three layers of high-performance fusion bonded epoxy coating Mentality of designing anti-tubular pole corrosion, but coating still has local damage, falls off with coating service life lower than the Pipe pile design longevity The problems such as life.In addition to this, for directly using PHC tubular pole to make other marine engineerings on basis, the chloride in seawater can It is contacted by the gap of concrete surface across concrete and rebar, due to the high alka environment of concrete, reinforcing bar can be blunt Change, so as to cause the corrosion of regional area, finally due to the internal pressure for generation of getting rusty, concrete can fall off fracture, thus shadow It rings and arrives tubular pole performance, influence the safety of structure.Therefore, tubular pole is applied to still have durability and corrosion resistance when ocean engineering Insufficient problem, leaves very big security risk to engineering.Secondly, making full use of near-coastal resources includes sea sand, sandstone etc., maximum Change and use prefabricated components, substantially reducing wet construction rate is also the characteristics of ocean engineering is different from land engineering and requirement, to tubular pole Development should fully consider such factor.Based on the harshness of the above marine corrosion environment, need to develop a kind of corrosion resistance By force, the good pile foundation form of durability.

Utility model content

The purpose of the utility model is to provide a kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure, the structures Lateral confinement is applied to tubular pole core concrete by FRP pipe, so that concrete is in three pressured states, improves holding for tubular pole Loading capability and bending stiffness delay the development of its microcrack, have been improved particularly the durability of tubular pole；Especially suitable for harbour, code Corrosion resistance piling strtucture in first-class ocean engineering improves to obtain good structure tension performance and corrosion resistance Durability, bearing capacity, bending stiffness and the shock resistance of tubular pole.

Of the existing technology in order to solve the problems, such as, the utility model adopts the following technical solution:

A kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure includes as the FRP pipe of lateral wall, conduct The PHC tubular pole core pipe of inner sidewall and the concrete layer being cast between FRP pipe and PHC tubular pole core pipe, FRP pipe, PHC tubular pole core pipe Hollow shell pill is formed with concrete layer.

Further, the cross section of the FRP pipe is any one in round or rectangle, the PHC tubular pole core pipe Cross section be annular.

Further, the FRP pipe is using in carbon fiber CFRP pipe, glass fibre GFRP pipe or aramid fiber AFRP pipe Any one.

Further, the concrete layer uses the sea sand sandstone of normal concrete, self-compacting concrete or near-coastal resources In any one be filled.

Further, the PHC tubular pole core pipe by deformed bar, tie hoop and pile concrete factory use from Heart moulding process is made.

Further, the pile concrete is poured by prestress high intensity concrete or the prestress high intensity concrete of enhancing It forms.

Advantage possessed by the utility model is with beneficial effect:

A kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure of the utility model is by the FRP as lateral wall Pipe, as inner sidewall PHC tubular pole core pipe and be fixedly arranged at FRP pipe PHC tubular pole core pipe between concrete layer constitute it is hollow Tubular pole.Outer layer FRP pipe and PHC tubular pole core pipe geometric centroid are overlapped.This reality utility model on the outside of PHC tubular pole core pipe by coating FRP pipe, to improve the corrosion resistance of structure, and coat on the outside of PHC tubular pole core pipe FRP pipe and fill concrete from And lateral confinement is applied to the core concrete of structure, so that concrete is in three pressured states, improves the carrying energy of tubular pole Power and bending stiffness have delayed the development of its longitudinal microcrack, to improve its endurance quality and anti-seismic performance.This is practical new Type has both the advantage of FRP and PHC tubular pole core pipe, has good structure tension performance, anti-seismic performance and corrosion resistance, especially Suitable for ocean engineering etc. other to corrosion resistance and the higher engineering of life requirement.

The FRP pipe can be with adaptation to local conditions using carbon fiber CFRP pipe, glass fibre GFRP pipe and aramid fiber AFRP Pipe.FRP material is anticorrosive, anti-fatigue performance is good, can use for a long time in the environment of acid, alkali, villaumite and humidity, thus can mention The service life of high structure.FRP fibrous composite has good corrosion resistance under long-term severe geological conditions.Sea The etching problem of foreign structure and offshore structure uses the good FRP of corrosion resistance can be well always than more prominent Solve the problems, such as this.The sandwich concrete can be normal concrete or compression strength 80-120MPa high-strength concrete and Self-compacting concrete, sea sand, the sandstone etc. that category near-coastal resources also can be selected are filled, will not be to the property of FRP pipe and PHC tubular pole It can have an impact, and greatly reduce the Master Cost of engineering.

The utility model takes full advantage of FRP pipe, the excellent performance of concrete and PHC tubular pole three kinds of materials of core pipe and mutual Effect compensates for disadvantage of the PHC tubular pole applied to corrosion resistance deficiency in the ocean engineerings such as harbour, harbour.On the one hand, outside Wall FRP pipe can with operative constraint concrete, be obviously improved the stress performance of concrete material, the durable of tubular pole can also be improved Property；On the other hand, concrete layer also effectively increases the strength and stiffness of FRP pipe；Collective effect has delayed its longitudinal microcrack Development.

The utility model is due to being after FRP pipe and PHC tubular pole installation of core pipe is in place, in FRP pipe and PHC tubular pole core pipe Casting concrete between interlayer, the corrosion resistance that structure is improved by the application of FRP.It, can be with when applied to ocean engineering It gathers materials on the spot and makees interlayer using sea sand, form composite structure, construction formwork expense, operating expenses, fee of material can be effectively reduced With with wet construction rate.

The utility model is prefabricated components, and construction and installation are quick, the prefabricated feature of the composite structure solve exploitation islands and reefs, The problem that concrete inconvenience is transported when ocean engineering stake, greatly reduces the wet construction rate of construction site, and marine engineering is turned It is changed to land engineering, overcomes the drawbacks such as not convenient of offshore construction.There is concrete protective outside when reinforcing bar is placed in PHC tubular pole core pipe Layer, FRP have corrosion resistance again, will not influence FRP pipe and PHC tubular pole core pipe performance, sea sand by using sea sand filling interlayer Use greatly reduce Master Cost again；The utility model is applied widely, the structural column in engineering, under severe corrosive environment Support pile, it is practical new that this can be used in the pile foundation under the conditions of the ocean engineerings such as bridge pier, harbour and harbour and other strong corrosives Type.

Detailed description of the invention

With reference to the accompanying drawing, the utility model is described in further detail:

Fig. 1 is a kind of tubular pole interlayer concrete filled composite structure cross section FRP pipe-PHC signal shown in embodiment 1 Figure；

Fig. 2 is a kind of tubular pole interlayer concrete filled composite structure cross section FRP pipe-PHC signal shown in embodiment 2 Figure；

Fig. 3 is a kind of tubular pole interlayer concrete filled composite structure cross section FRP pipe-PHC signal shown in embodiment 3 Figure.

In figure: 1 it is FRP pipe, 2 is concrete layer, 3 be PHC tubular pole core pipe, and 4 be deformed bar, and 5 be tie hoop, 6 For pile concrete.

Specific embodiment

The present invention will be further described in detail combined with specific embodiments below, but the protection model of the utility model It encloses and is not limited by specific embodiment, be subject to claims.In addition, with without prejudice to before technical solutions of the utility model It puts, any modifications or changes easy to accomplish to those of ordinary skill in the art made by the utility model fall within this reality Within novel scope of the claims.

Embodiment 1:

As shown in Figure 1, a kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure of the present embodiment, includes conduct The FRP pipe 1 of lateral wall, as inner sidewall PHC tubular pole core pipe 3 and be cast in FRP pipe PHC tubular pole core pipe between concrete 2, FRP of layer pipe 1, PHC tubular pole core pipe 3 and concrete layer 2 form hollow shell pill, FRP pipe and PHC tubular pole core pipe geometric centroid weight It closes.

The cross section of the FRP pipe 1 is circle, and the cross section of the PHC tubular pole core pipe 3 is annular.

The lateral wall FRP pipe can be outer using carbon fiber CFRP pipe itself, and glass fibers can be used with adaptation to local conditions GFRP pipe or aramid fiber AFRP pipe are tieed up,

The concrete layer can be poured using normal concrete, self-compacting concrete, and near-coastal resources also can be selected Sea sand, sandstone etc. be filled, FRP will not be managed and the performance of PHC tubular pole have an impact, and greatly reduce engineering Master Cost.

Specific pouring procedure is after FRP pipe 1 and PHC tubular pole core pipe 3 are installed in place, and casting concrete layer 2, is mixed therebetween Solidifying soil consolidation forms FRP pipe-PHC tubular pole interlayer concrete filled composite structure.

The PHC tubular pole core pipe uses centrifugal forming in factory by deformed bar 4, tie hoop 5 and pile concrete 6 Technique is made.

The pile concrete 6 is poured by prestress high intensity concrete or the prestress high intensity concrete of enhancing.

Embodiment 2:

The cross section of FRP pipe described in the present embodiment 1 is square, remaining is the same as embodiment 1.

Embodiment 3:

The cross section of FRP pipe described in the present embodiment 1 is rectangle, remaining is the same as embodiment 1.

The utility model can be applied particularly to the pile foundation field in civil engineering, be particularly suitable for long-term severe geology ring Support pile under border and to higher ocean engineering of corrosion resistance life requirement etc..

The above is only the preferred embodiment of the utility model, not does any type of limit to the utility model System, for those of ordinary skill in the art, in the range of not departing from technical solutions of the utility model, when using upper The technology contents for stating announcement make a little equivalent embodiment for being modified to equivalent variations, but all without departing from the utility model technology The content of scheme, according to the technical essence of the utility model it is made to the above embodiment it is any it is simple modification, equivalent variations with Modification also should be regarded as the protection scope of the utility model.The available prior art of each component part being not known in the present embodiment adds To realize.

Claims

1. a kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure, it is characterised in that: include as lateral wall FRP pipe (1), as inner sidewall PHC tubular pole core pipe (3) and be cast in FRP pipe PHC tubular pole core pipe between concrete layer (2), FRP manages (1), PHC tubular pole core pipe (3) and concrete layer (2) and forms hollow shell pill.

2. a kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure according to claim 1, it is characterised in that: The cross section of the FRP pipe (1) is round or rectangle, and the cross section of the PHC tubular pole core pipe (3) is annular.

3. a kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure according to claim 1, it is characterised in that: The FRP pipe is using any one in carbon fiber CFRP pipe, glass fibre GFRP pipe or aramid fiber AFRP pipe.

4. a kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure according to claim 1, it is characterised in that: The concrete layer is filled out using any one in the sea sand sandstone of normal concrete, self-compacting concrete or near-coastal resources It fills.

5. a kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure according to claim 1, it is characterised in that: The PHC tubular pole core pipe uses centrifugal forming work in factory by deformed bar (4), tie hoop (5) and pile concrete (6) Skill is made.

6. a kind of FRP pipe-PHC tubular pole interlayer concrete filled composite structure according to claim 5, it is characterised in that: The pile concrete (6) is poured by prestress high intensity concrete or the prestress high intensity concrete of enhancing.