CN205000235U - Carbon fiber tube concrete directly imbeds joint construction of base - Google Patents

Abstract

The utility model provides a carbon fiber tube concrete directly imbeds joint construction of base, including concrete foundation, the last carbon fiber tube concrete that has inlayed of concrete foundation, the carbon fiber tube concrete includes the carbon fiber sheath and wraps up in the outside concrete layer of carbon fiber sheath, in the carbon fiber tube concrete one end embedding concrete foundation. The utility model discloses a directly imbed the joint construction of base, cancelled the connective bar and the prestressing tendons that need complicated mounting process, concreting is filled to the sheath that adopts the carbon fiber to make to directly being embedded into as in concrete support or the pile cover isotructure, comparing other construction methods, its construction is simple, and swiftly just structural -load -carrying capacity, durability, corrosion resisting property are strong. And can be as required through the control carbon fiber the number of piles and bearing capacity that the skew angle comes the control structure and at the deformability of certain direction.

Description

A kind of carbon fiber pipe concrete directly embeds the connecting structure of pedestal

Technical field

The present invention relates to the connecting structure that a kind of carbon fiber pipe concrete directly embeds pedestal.

Background technology

In traditional component connects, as pile cover is connected with abutment, for commensurate structure is out of shape and the requirement of power transmission, must pitman or post-tensioned prestressing muscle be set between two components; Also be common two kinds of types of attachment: sell excellent method and post-stress method.Sell excellent method i.e. two components by connecting pin or plunger transmitting force and moment of flexure.This kind of method construction is complicated, needs to carry out multiple detailed treatment to junction.Post-stress method is equally because complex procedures difficulty is adopted by engineer.

And the present invention by carbon fiber high for resistance to tension and the ingenious combination of ordinary concrete are made have high-strength pulling-resisting, pressure energy power, improved corrosion performance supporting pile be directly embedded in concrete pedestal or pile cover; this kind of method easy construction, quick; power transmission is simple; the pitman needing complicated mounting process can not only be removed from; can be protected well by anticorrosive carbon fiber pipe and limit core concrete again, the intensity of effective Concrete Structure, durability and ductility.By controlling the number of plies and the oblique angles of fiber, and then allow the carbon fiber pipe of laminate structure be designed to required strength and stiffness at specific direction, form the strong and weak shaft component that has on obvious mechanics, as the stake of one-way movement at vertical bridge to more yielding, better can adapt to the motion of superstructure.This pipe can effectively replace traditional strengthening measure.Secondly fill concrete wherein can effectively strengthen bending strength and rigidity, solves the cripling problem of pipe.By prefabricating technique and mixed type being built the advantage that can play concrete component fast pouring and system easy to control the quality etc.In addition, if embedded length is too small, when being namely less than critical embedded length Lcr, bonding failure is easily caused to occur in before potentiality play completely, so not only danger but also uneconomical, and by control embedded length can better control transmittance process and effectively play material property, raising component security performance.

Summary of the invention

The utility model provides a kind of carbon fiber pipe concrete directly to embed the connecting structure of pedestal, and design and construction are convenient, effectively can improve the intensity of structural concrete, durability and ductility.Effective minimizing structural repair expense.

Specific embodiment of the invention scheme is: a kind of carbon fiber pipe concrete directly embeds the connecting structure of pedestal, comprise concrete pedestal, described concrete pedestal is embedded with carbon fiber pipe concrete, described carbon fiber pipe concrete comprises carbon fiber sheath and is wrapped in the layer of concrete of carbon fiber sheath outside, and described carbon fiber pipe concrete one end embeds in concrete pedestal.

Further, described carbon fiber sheath is made up of multilayer carbon fiber pipe, and the carbon fiber pipe of every layer is crisscross arranged.

Further, described adjacent bilevel carbon fiber pipe phase angle is 45 ° to 90 °.

Further, described carbon fiber pipe concrete and concrete pedestal mating face are provided with adhesive glue.

Compared with prior art, the utility model has following beneficial effect:

1. adopt connecting structure and the construction method thereof of the direct embedding pedestal of technique scheme, eliminate the pitman and presstressed reinforcing steel that need complicated mounting process; Adopt the sheath made of carbon fiber to fill concreting, and be directly embedded into as in the structure such as concrete bearing or pile cover, compare other construction method, its construction simple and fast and structural-load-carrying capacity, durability, decay resistance are strong.And the supporting capacity of control structure and the deformability in certain direction can be come by the number of plies and skew angle that control carbon fiber as required.

2. adopt connecting structure and the construction method thereof of the direct embedding pedestal of technique scheme, make connecting portion from the erosion of extraneous rainwater etc., real realization " zero dimension is protected ", improves durability and the application life of structure; The type of attachment simultaneously directly embedding pedestal is not only applicable to the design of bridge pile foundation, more can conveniently for there is the braced structures of specific direction distortion, and range of application is very extensive.

Accompanying drawing explanation

Fig. 1 is overall structure schematic diagram of the present utility model;

Fig. 2 is carbon fiber pipe concrete construction schematic diagram of the present utility model;

Fig. 3 is carbon fiber pipe concrete schematic diagram of the present utility model.

In figure: 1-concrete pedestal, 2-carbon fiber pipe concrete embed concrete pedestal bonded areas, 3-carbon fiber pipe concrete, 4-layer of concrete, 5-carbon fiber sheath.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.

As shown in Fig. 1 ~ 2, a kind of carbon fiber pipe concrete directly embeds the connecting structure of pedestal, comprise concrete pedestal 1, described concrete pedestal 1 is embedded with carbon fiber pipe concrete 3, described carbon fiber pipe concrete 3 comprises carbon fiber sheath 5 and is wrapped in the layer of concrete 4 of carbon fiber sheath 5 outside, and described carbon fiber pipe concrete 3 one end embeds in concrete pedestal 1.

Described carbon fiber sheath 5 is made up of multilayer carbon fiber pipe, and the carbon fiber pipe of every layer is crisscross arranged.

In the present embodiment, described adjacent bilevel carbon fiber pipe phase angle is 45 ° to 90 °.

Described carbon fiber pipe concrete 3 is provided with adhesive glue with concrete pedestal mating face.

Manufacture the connecting structure construction method that carbon fiber pipe concrete directly embeds pedestal, comprise the following steps:

(1) fiber that the multilayer utilized has certain skew angle manufactures carbon fiber sheath;

(2) the carbon fiber jacket inner wall formed in step (1) first fills adhesive glue, then fill concrete warp

Carbon fiber pipe concrete is formed after vibrating;

(3) appearance bonding in carbon fiber pipe concrete lower end embeds after district coats adhesive glue and is embedded in concrete pedestal

Carry out formed by integrally casting shaping, concrete pedestal is technology carbon fiber per unit before manufacture manufactures carbon fiber sheath

The tensile strength f' of area, then according to the predetermined deformation direction of formula one and formula two and component

The oblique angles φ and the number of plies n that determine carbon fiber is required with vertical bearing load;

Formula one: $\frac{f_{cc}}{f_c}=1+1.5\sqrt{\frac{P}{f_c}}+2\·\frac{P}{f_c};$

Formula two: $n=\frac{P\·D}{2\·f^{\′}};$

Wherein: f _ccfor concrete limit ultimate strength;

P is measuring pressure needed for carbon fiber pipe inwall;

F _cfor fill concrete is without compressive strength during pressure measurement;

F' is the tensile strength of carbon fiber per unit area.

The length X that concrete pedestal carbon fiber pipe concrete component bonding embeds district is not less than critical embedded length Lcr; Wherein Lcr meets formula three,

Formula three: $\frac{L_{cr}}{D}=\sqrt{\frac{3\mathrm{\π}M}{D^3{f}_c}(1-0.5{(\frac{e}{D}+\frac{3}{8})}^{-1})};$

In formula three: L _crfor critical bonded areas is long;

M is interface moment;

E is the bias voltage degree of axial load;

D is the diameter of carbon fiber pipe concrete component.

The foregoing is only preferred embodiment of the present utility model, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.

Claims (4)

1. a carbon fiber pipe concrete directly embeds the connecting structure of pedestal, it is characterized in that, comprise concrete pedestal, described concrete pedestal is embedded with carbon fiber pipe concrete, described carbon fiber pipe concrete comprises carbon fiber sheath and is wrapped in the layer of concrete of carbon fiber sheath outside, and described carbon fiber pipe concrete one end embeds in concrete pedestal.

2. a kind of carbon fiber pipe concrete according to claim 1 directly embeds the connecting structure of pedestal, it is characterized in that, described carbon fiber sheath is made up of multilayer carbon fiber pipe, and the carbon fiber pipe of every layer is crisscross arranged.

3. a kind of carbon fiber pipe concrete according to claim 2 directly embeds the connecting structure of pedestal, it is characterized in that, described adjacent bilevel carbon fiber pipe phase angle is 45 ° ~ 90 °.

4. a kind of carbon fiber pipe concrete according to claim 1 directly embeds the connecting structure of pedestal, it is characterized in that, described carbon fiber pipe concrete and concrete pedestal mating face are provided with adhesive glue.