CN203487457U

CN203487457U - Novel and environment-friendly FRP rib anchor device

Info

Publication number: CN203487457U
Application number: CN201320466756.6U
Authority: CN
Inventors: 杨树桐; 刘亚林; 冷科治
Original assignee: Ocean University of China
Current assignee: Ocean University of China
Priority date: 2013-08-01
Filing date: 2013-08-01
Publication date: 2014-03-19
Anticipated expiration: 2023-08-01

Abstract

The utility model discloses a novel and environment-friendly FRP rib anchor device which comprises two waste steel bars (1) equipped with triangular grooves (2) inside. The interior surface of each triangular groove (2) is provided with an indentation. An FRP rib (3) is arranged inside the waste steel bars (1). The novel and environment-friendly FRP rib anchor device is simple in manufacture process, enables waste material to be fully utilized, is convenient for construction, can be used in a cyclic manner, and is suitable for popularization and application.

Description

A kind of FRP muscle ground tackle of novel environment friendly

Technical field

The utility model relates to a kind of ground tackle, specifically, relates to a kind of FRP muscle ground tackle of novel environment friendly.

Background technology

FRP muscle is by extrusion process, continuous fiber and epoxy resin to be formed according to certain ratio gummed.Thereby its axial mechanical characteristic depends on axial direction fibre, and side direction mechanical property depends on epoxy resin.Different from reinforcing bar, FRP muscle is a typical anisotropic material, and its side direction shear strength is lower.While carrying out FRP muscle pull-out test, if FRP muscle is directly sandwiched on testing machine chuck as folder reinforcing bar, can there is partial cut and cleavage fracture because FRP muscle shear strength is not enough, thereby also cannot obtain desirable result of the test.In addition, along with the development of pre-stress FRP muscle technology, end stretch-draw and the anchoring problem of FRP muscle become increasingly conspicuous, and the ground tackle setting of FRP muscle seems particularly important.How at FRP muscle loading end place, rational ground tackle being set, in loading procedure, effectively protection FRP muscle is not bad by folder, is the end anchorage aspect problem demanding prompt solution of FRP muscle in the tension test of FRP muscle, Test about Bond Strength and prestressed structure.

In order to make cleavage fracture not to occur and inefficacy in advance in FRP muscle clamping process, FRP muscle loading end anchor measure is very crucial.At present both at home and abroad conventional Anchorage Plan, based on binding type anchoring, arranges sleeve in FRP muscle end, and pours into epoxide-resin glue or expansive cement grout by the anchoring of FRP muscle wherein.While stretching with Test about Bond Strength, the FRP muscle with sleeve is directly fixed on testing machine chuck, thereby has avoided FRP muscle horizontal shearing and cleavage fracture.Sleeve is generally steel pipe, and steel pipe inner wall is carved with screw thread, and pipe diameter is than the large 2-6mm of FRP muscle diameter, and the length of steel pipe is 200mm, 300mm or FRP muscle diameter 40 times.Subsequently FRP muscle is inserted in steel pipe, and infusion epoxy resin or cement mortar.In addition,, in order to prevent the slippage of FRP muscle and binder interface in loading procedure, can give in advance slight distortion of steel pipe walls; Or first certain surfacing is carried out in FRP muscle one end, then put it in metal cylinder, then with press slowly, even pressed metal cylinder, make its radial contraction compress FRP muscle pressing type steel bushing ground tackle.

Based on this, scholars adopt clip type, with the bonded composite anchorage combining, FRP muscle is carried out to anchoring, in Practical Project for guy system and the stretch-draw of prestressed structure to FRP muscle of cable stayed bridge.

Although cohere jacket cylinder ground tackle, can realize the loading to FRP muscle, there are two obvious shortcomings in this technology., in FRP muscle stretching process, very easily there is the relative slippage of end FRP muscle and cementing agent, thereby cannot obtain desirable result in one; Its two, steel bushing needs special making, and after the pulling test of FRP muscle finishes, in sleeve, owing to there being a large amount of epoxy resin, deal with the work very complicated, so cannot continue turnover use.

Utility model content

In order to overcome the defect existing in prior art, the utility model provides a kind of manufacture craft simple, makes full use of obsolete material, easy construction, and can have enough to meet the need the FRP muscle ground tackle of the novel environment friendly of use.

Its technical scheme is as follows:

A FRP muscle ground tackle for novel environment friendly, comprises that two intersegmental parts are provided with the discarded reinforcing bar of triangular groove, and the inner surface of described triangular groove is provided with indentation, and FRP muscle is positioned at the inside of discarded reinforcing bar.

Further preferably, the end at FRP muscle is provided with one deck epoxide-resin glue.

The beneficial effects of the utility model:

The square groove forming due to two triangular grooves of outsourcing FRP muscle in the technical solution of the utility model is similar to the circumcircle of FRP muscle cross section, four of the inside face that two triangular grooves form all can with FRP muscle Surface Contact.When testing machine chuck is clamped ground tackle, radial compression power is passed to FRP muscle surface, thereby FRP muscle is produced to radial compression effect, effectively reduces the slippage between FRP muscle and ground tackle.In addition, owing to there being an epoxy resin thin layer between FRP muscle and triangular groove inwall, FRP muscle is played a protective role, thereby avoid the local squeeze and destroy of FRP muscle.These ground tackle raw material can adopt discarded reinforcing bar, and can have enough to meet the need use in process of the test, have both embodied environmental protection, can reduce costs again.

Accompanying drawing explanation

Fig. 1 is the structural representation of the FRP muscle ground tackle of the utility model novel environment friendly.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in more detail.

With reference to Fig. 1, a kind of FRP muscle ground tackle of novel environment friendly, comprises that two intersegmental parts are provided with the discarded reinforcing bar 1 of triangular groove 2, and the inner surface of described triangular groove 2 is provided with indentation, and FRP muscle 3 is positioned at the inside of discarded reinforcing bar 1.End at FRP muscle 3 is provided with one deck epoxide-resin glue.

The utility model, in concrete application process, is spread thin layer epoxide-resin glue before test within the scope of FRP muscle 3 end 300mm, and this glue is the two superpower cementing agents of component of JE-101AB.In the triangular groove 2 of discarded reinforcing bar 1, coat thinner one deck epoxide-resin glue subsequently, encase FRP muscle 3 involutory compacting.FRP muscle 3 end anchorages are made.During test, the FRP muscle 3 with ground tackle directly can be sandwiched on testing machine chuck, after off-test, test specimen be taken off, with epoxy resin solution sol solution by the peptization solution in ground tackle.By two sections of discarded reinforcing bars 1 separately, the epoxy resin that clean surface is unnecessary, is used in order to continuing below.

The above; it is only the preferably specific embodiment of the utility model; protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses, the simple change of the technical scheme that can obtain apparently or equivalence are replaced and are all fallen in protection domain of the present utility model.

Claims

1. the FRP muscle ground tackle of a novel environment friendly, it is characterized in that, comprise that two intersegmental parts are provided with the discarded reinforcing bar (1) of triangular groove (2), the inner surface of described triangular groove (2) is provided with indentation, and FRP muscle (3) is positioned at the inside of discarded reinforcing bar (1).

2. the FRP muscle ground tackle of novel environment friendly according to claim 1, is characterized in that, at the end of FRP muscle (3), is provided with one deck epoxide-resin glue.