CN2816542Y - Large-diameter plastic corrugated pipe for prestressed concrete vacuum slurry pressing - Google Patents

Large-diameter plastic corrugated pipe for prestressed concrete vacuum slurry pressing Download PDF

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Publication number
CN2816542Y
CN2816542Y CN 200520078708 CN200520078708U CN2816542Y CN 2816542 Y CN2816542 Y CN 2816542Y CN 200520078708 CN200520078708 CN 200520078708 CN 200520078708 U CN200520078708 U CN 200520078708U CN 2816542 Y CN2816542 Y CN 2816542Y
Authority
CN
China
Prior art keywords
corrugated
rid
wave line
concrete
line rib
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200520078708
Other languages
Chinese (zh)
Inventor
李晓峰
安国勇
刘战宏
张建邦
崔鸿利
文启军
崔学民
王生鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
No.4 Engineering Co., Ltd., Zhongtie Co., Ltd., Bureau Group
China Railway Group Ltd CREC
Original Assignee
No4 Engineering Co Ltd Zhongtie Co Ltd Bureau Group
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by No4 Engineering Co Ltd Zhongtie Co Ltd Bureau Group filed Critical No4 Engineering Co Ltd Zhongtie Co Ltd Bureau Group
Priority to CN 200520078708 priority Critical patent/CN2816542Y/en
Application granted granted Critical
Publication of CN2816542Y publication Critical patent/CN2816542Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a large-diameter plastic corrugated pipe for prestressed-concrete vacuum press slurry. When a large-sized bridge beam constructs, in a post-tensioning bonding prestressed-concrete structure, the rust protection and the corrosion prevention of a prestressed rid can be realized by that cement slurry is filled into a pre-bury hole channel. At present, various homegrown plastic corrugated pipes can not achieve the technical requirements without the national standard, start to deform when the plastic corrugated pipes are buried with the depth of 1.5 m in the concrete, and can not pass through a steel strand bundle which is corresponding to the hole channel. The utility model is characterized in that pipe corrugated rids form spiral installation, the diameter of the corrugated pipe is 100 to 120 m m, the spacing of each corrugated rid is 15 to 20 m m, the height of each corrugated rid is 5 to 8 m m, the width of each corrugated rid is 10 to 12 m m and the wall thickness is 3 to 5 m m. The external form of each corrugated rid forms a semicircular shape, and an included angle of the corrugated rids and the radical direction is 7 to 10 DEG. The rigidity of the annular direction of the utility model is larger or equal to 12 k p a, the large-diameter plastic corrugated pipe which is buried within 6 m in the concrete has the deformation which is less than 6 m m, and the steel strand bundle which is corresponding to the hole channel can pass through easily.

Description

A kind of prestressed concrete vacuum grouting large-bore plastics bellows that is used for
Technical field
The utility model belongs to structural material, is specifically related to a kind of prestressed concrete vacuum grouting large-bore plastics bellows that is used for, and belongs to building materials field.
Background technique
In construction large bridge when construction particularly, in the post-tensioning prestress with bond concrete structure, the antirust, anticorrosion of acting in conjunction between prestressed tendon and the concrete and prestressed tendon realized by filling cement slurry in the pre-buried duct, traditional way is to adopt the common grouting method to be in the milk, promptly under 0.5~0.7Mpa pressure, thin cement slurry is pressed into the duct, cement slurry segregation, bleeding, grouting leakiness, stiff aftershrinkage generation hole take place in this way easily, stay serious potential safety hazard.The vacuum aid grouting technology is the grouting new process that Switzerland VSL company releases, and can increase the plumpness and the density of grouting, improves durability of structures greatly.But this technology is very high to technology and material requirements, particularly require duct material seal degree good, thereby influence grouting quality because tightness directly has influence on degree of vacuum, metal bellows Yin Qiyi does not get rusty, easily is corroded, sealing is poor, flexible and can not satisfy the requirement of vacuum grouting technology.The various plastic film capicitors of domestic production at present are because of no NBS and industry standard, each manufacturer makes by national plastic article standard, so can not reach the technical requirements of grouting new process, particularly existing large-bore plastics bellows, hoop rigidity is all between 6.0~7.0kpa, in concrete, begin distortion during buried depth 1.5m, increase along with buried depth, amount of deformation strengthens, when buried depth is above to 2m, amount of deformation can't pass the steel wire bundle in corresponding duct greater than 3cm, thereby causes accident resulting from poor quality of projects.
The model utility content
The purpose of this utility model provides a kind of prestressed concrete vacuum grouting large-bore plastics bellows that is used for.
Its major technique feature of the utility model is:
Tube wave line rib screw arrangement, the bellows bore is 100-120mm, tube wave line rib spacing 15-20mm, tube wave line rib height 5-8mm, tube wave line rib width 10-12mm, thickness of pipe wall 3-5mm, tube wave line rib external form is semi-circular, and tube wave line rib and caliber are the 7-10 degree to angle.
The utility model is owing to select rational physical dimension and shape and structure for use, and its hoop rigidity can reach more than the 12kpa, and bent toughness is good, is specially adapted to the duct pore-forming of the prestressed concrete vacuum grouting of buried depth 3-6m.
Description of drawings
Accompanying drawing 1 is a plan view of the present utility model.
Accompanying drawing 2 is a side cutaway view of the present utility model.
Description of reference numerals is as follows: pipe outer wall 1, inner tube wall 2, tube wave line rib 3.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
Tube wave line rib screw arrangement, the bellows bore is 120mm, tube wave line rib (3) spacing 20mm, pipe outer wall (1) is apart from tube wave line rib (3) height 5mm, tube wave line rib (3) width 10mm, pipe outer wall (1) and inner tube wall (2) spacing 3mm, tube wave line rib (3) external form is semi-circular, tube wave line rib (3) is 10 degree with caliber to angle, and present embodiment can be selected for use high density polyethylene (HDPE) once to suppress and form.
The utility model hoop rigidity 〉=12kpa, in concrete buried depth 6m with the internal strain amount less than 6mm, the steel wire bundle in corresponding duct can pass through smoothly, progressively implementation along with vacuum grouting technology, the plastic film capicitor of heavy caliber high-strength will obtain a large amount of application, have brilliant market developing prospect.

Claims (2)

1. one kind is used for prestressed concrete vacuum grouting large-bore plastics bellows, it is characterized in that: tube wave line rib screw arrangement, the bellows bore is 100-120mm, tube wave line rib (3) spacing 15-20mm, tube wave line rib (3) height 5-8mm, tube wave line rib (3) width 10-12mm, thickness of pipe wall 3-5mm, tube wave line rib (3) external form is semi-circular, and tube wave line rib (3) is the 7-10 degree with caliber to angle.
2. a kind of prestressed concrete vacuum grouting large-bore plastics bellows that is used for according to claim 1, it is characterized in that: tube wave line rib screw arrangement, the bellows bore is 120mm, tube wave line rib (3) spacing 20mm, pipe outer wall (1) is apart from tube wave line rib (3) height 5mm, tube wave line rib (3) width 10mm, pipe outer wall (1) and inner tube wall (2) spacing 3mm, tube wave line rib (3) external form is semi-circular, and tube wave line rib (3) is 10 degree with caliber to angle.
CN 200520078708 2005-04-30 2005-04-30 Large-diameter plastic corrugated pipe for prestressed concrete vacuum slurry pressing Expired - Fee Related CN2816542Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520078708 CN2816542Y (en) 2005-04-30 2005-04-30 Large-diameter plastic corrugated pipe for prestressed concrete vacuum slurry pressing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520078708 CN2816542Y (en) 2005-04-30 2005-04-30 Large-diameter plastic corrugated pipe for prestressed concrete vacuum slurry pressing

Publications (1)

Publication Number Publication Date
CN2816542Y true CN2816542Y (en) 2006-09-13

Family

ID=36996351

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520078708 Expired - Fee Related CN2816542Y (en) 2005-04-30 2005-04-30 Large-diameter plastic corrugated pipe for prestressed concrete vacuum slurry pressing

Country Status (1)

Country Link
CN (1) CN2816542Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008067691A1 (en) 2006-12-08 2008-06-12 Zte Corporation Method for automatic frequency correction of a mobile terminal and the system thereof
CN101818547A (en) * 2010-04-09 2010-09-01 北京交通大学 Corrugated pipe pore-forming device for enlarging prestressed aperture of cross section
CN101818567A (en) * 2010-04-01 2010-09-01 北京交通大学 Rubber bar pore-forming device for enlarging prestressed aperture of cross section
CN105040984A (en) * 2015-07-03 2015-11-11 天津鑫坤泰预应力专业技术有限公司 Bamboo-joint-shaped prestress flat opening plastic pipe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008067691A1 (en) 2006-12-08 2008-06-12 Zte Corporation Method for automatic frequency correction of a mobile terminal and the system thereof
CN101818567A (en) * 2010-04-01 2010-09-01 北京交通大学 Rubber bar pore-forming device for enlarging prestressed aperture of cross section
CN101818547A (en) * 2010-04-09 2010-09-01 北京交通大学 Corrugated pipe pore-forming device for enlarging prestressed aperture of cross section
CN105040984A (en) * 2015-07-03 2015-11-11 天津鑫坤泰预应力专业技术有限公司 Bamboo-joint-shaped prestress flat opening plastic pipe

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: CHINA RAILWAY FIRST BUREAU GROUP CO., LTD.; PATEN

Free format text: FORMER OWNER: THE FOURTH ENGINEERING CO., LTD. OF CHINA RAILWAY FIRST GROUP

Effective date: 20080523

CF01 Termination of patent right due to non-payment of annual fee
TR01 Transfer of patent right

Effective date of registration: 20080523

Address after: No. 1, Yanta North Road, Xi'an, Shaanxi, zip code: 710054

Co-patentee after: No.4 Engineering Co., Ltd., Zhongtie Co., Ltd., Bureau Group

Patentee after: China Railway Group Co., Ltd.

Address before: No 8, Yuquan West Road, Xianyang, Shaanxi Province, 712000

Patentee before: No.4 Engineering Co., Ltd., Zhongtie Co., Ltd., Bureau Group

C19 Lapse of patent right due to non-payment of the annual fee