CN2346862Y

CN2346862Y - Dual-layer plastic coated non-adhered ribs bundle

Info

Publication number: CN2346862Y
Application number: CN 98252005
Authority: CN
Inventors: 李晨光
Original assignee: BEIJING RESEARCH INST OF BUILDING ENGINEERING
Current assignee: BEIJING RESEARCH INST OF BUILDING ENGINEERING
Priority date: 1998-12-30
Filing date: 1998-12-30
Publication date: 1999-11-03
Anticipated expiration: 2008-12-30

Abstract

The utility model relates to a dual-layer plastic coated non-adhered ribs bundle. The utility model comprises steel strands 1, an anti-corrosion grease layer 2 which is filled between the steel strands, a plastic pipe 3 which is positioned at the outside of the grease layer, and a plastic pipe 4 which covers the outside of the plastic pipe 3. The utility model has the advantages of double layers plastic pipe protection, corrosion resistance, impact resistance, strong anti damage capability, easy spread, easy bundle, and high efficiency of construction. The utility model can be used in the form of multi-layer overlap in the vitro prestressed structure, and the mutual squeeze effect can be eliminated.

Description

A kind of double-deck plastic-coated unbonded tendon bundle

The utility model relates to a kind of double-deck plastic-coated unbonded tendon bundle.

Individual layer (single) the plastic-coated unbonded tendon that extensively adopts is applicable to the floor framing system at present, when many of employings walk abreast and restraint design, wayward rise in the construction, and use the support split heads more, in addition, when individual layer plastic-coated unbonded tendon was used for external prestressing structure, its anti-construction damage capability was lower.Therefore, be necessary to provide a kind of unbonded tendon bundle that is applicable to external prestressing structure and prestressing without bondn structure.

The utility model purpose provides a kind of double-deck plastic-coated unbonded tendon, and its anti-construction damage capability is stronger, and easy construction.

For achieving the above object the utility model by the following technical solutions; A kind of double-deck plastic-coated does not have bonding muscle bundle, and it comprises steel strand, is filled in the anticorrosion oil layer between steel strand, is positioned at the outer plastic pipe of oil layer, it is characterized in that plastic pipe also is surrounded by another plastic pipe outward.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1: single double-deck plastic-coated unbonded tendon structural representation

Fig. 2: many double-deck plastic-coated unbonded tendon bundle structural representations

Among Fig. 1, Fig. 2,1,1 ' be steel strand, outside steel strand, be filled with anticorrosion oil layer 2,2 ', 3,3 ' for being enclosed in the plastic pipe outside the oil layer, its thickness generally adopts about 1mm, at plastic pipe 3,3 ' surround an outward plastic pipe 4,4 ', in Fig. 2, have 3 unbonded tendons parallel, wherein plastic pipe 3 ' adjacent tubes between have connecting tube 5 to link to each other.About 2～5 of described radical.Plastic pipe generally adopts polyethylene (PE) pipe.

The utility model advantage: two-ply plastic (PE) protection, corrosion-resistant, shock resistance; Anti-damage capability is strong; The shop bundle is easy, efficiency of construction is high; In external prestressing structure, can use by multiple-layer overlapped, can eliminate mutually and squeeze The pressure effect.

Claims

1, a kind of double-deck plastic-coated does not have bonding muscle bundle, and it comprises steel strand 1, is filled in the anticorrosion oil layer 2 between steel strand, is positioned at the outer plastic pipe 3 of oil layer, it is characterized in that the plastic pipe 3 outer plastic pipes 4 that are surrounded by.

2, do not have bonding muscle bundle by the described double-deck plastic-coated of claim 1, it is characterized in that linking to each other between the plastic pipe of described each adjacent no bonding muscle.

3, do not have bonding muscle bundle by the described double-deck plastic-coated of claim 1, it is characterized in that described no bonding muscle number is 2～5.