CN203977384U - Pre-buried guide rail - Google Patents
Pre-buried guide rail Download PDFInfo
- Publication number
- CN203977384U CN203977384U CN201420394160.4U CN201420394160U CN203977384U CN 203977384 U CN203977384 U CN 203977384U CN 201420394160 U CN201420394160 U CN 201420394160U CN 203977384 U CN203977384 U CN 203977384U
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- CN
- China
- Prior art keywords
- buried
- guide rail
- bellows
- construction
- buried guide
- 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.)
- Withdrawn - After Issue
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Lining And Supports For Tunnels (AREA)
Abstract
Pre-buried guide rail, relates to the pre-buried device in duct in the construction projects such as water conservancy and hydropower.It as one group, is laid in circular holes chamber surface by two reinforcing bars, forms circuit, and pre-buried guide rail two ends are connected to prefabricated ground tackle groove, between ground tackle groove two-port, horn mouth are installed in advance.The beneficial effect the utlity model has is: in the Embedment Construction of pressure pipeline construction pre-stress anchor cable duct, pre-buried guide rail is installed, can the pre-buried bellows line style of guiding keep smooth, guarantee the installation accuracy of pre-buried bellows, effectively solve the guiding difficult problem in bellows installation process.
Description
Technical field:
Pre-buried guide rail, relates to the pre-buried device in duct in the construction projects such as water conservancy and hydropower.
Background technology:
In the pressure pipeline structure construction of the construction projects such as water conservancy and hydropower, ring anchor pre-stress construction is a crucial step, and duct pre-buried be the first step of whole ring anchor pre-stress construction operation.The conventional method of duct Embedment Construction is: with galvanized wire, bellows and structure reinforcing bars are carried out to colligation and fix, this method is simple, but defect is more, as fixing in colligation insecure, location is inaccurate, bellows line style is not smooth, during concreting, bellows is easily shifted, distortion, breakage, stop up bellows duct etc., cause postorder work cannot carry out or carry out and be the devil.For guaranteeing the total quality of ring anchor prestress engineering, pre-buried as the duct of first operation, it is particularly important that quality control on construction seems.How to guarantee the precision (mm level) of duct Embedment Construction, improve ring anchor stretch-draw success rate and reduce loss of prestress, guarantee the validity of prestress application, most important to the prestressed integral construction quality of ring anchor, construction speed, cost consumption etc.The pre-buried construction prestressed cable mainly for the pre-buried bellows of needs in duct pre-buried, the key of controlling duct Embedment Construction quality is must accurately limit the installation site of pre-buried bellows and the trend of pre-buried bellows before pre-buried bellows, guide pre-buried bellows line style to keep smooth, guarantee installation accuracy.And cavern's wall very thin (bellows and the structure reinforcing bars concrete of building above only have 45cm thick) in ring anchor pre-stress construction, ring anchor spacing only has 45cm, and its operating space is not enough, accurately limit pre-buried bellows installation site, guiding pre-buried bellows line style to keep smooth, is also a difficult problem.
Summary of the invention:
Problem to be solved in the utility model provides exactly a kind of and in the Embedment Construction of pressure pipeline construction pre-stress anchor cable duct, can guide pre-buried bellows line style to keep smooth for above deficiency, guarantee the duct pre-embedded device of pre-buried bellows installation accuracy.Its technical scheme is as follows:
It as one group, is laid in circular holes chamber surface by two reinforcing bars, forms circuit, and pre-buried guide rail two ends are connected to prefabricated ground tackle groove, between ground tackle groove two-port, horn mouth are installed in advance.
Described two rebar spacings are 100mm～120mm.
Described reinforcing bar adopts Φ 12mm～Φ 14mm screw-thread steel.
Compared with prior art, the beneficial effect the utlity model has is:
1, in the Embedment Construction of pressure pipeline construction pre-stress anchor cable duct, pre-buried guide rail is installed, can be guided pre-buried bellows line style to keep smooth, guarantee the installation accuracy of pre-buried bellows, effectively solve the guiding difficult problem in bellows installation process.
2, the scientific construction of pre-buried guide rail in duct is pre-buried, simple, saves manpower financial capacity.COMPREHENSIVE CALCULATING, raises the efficiency 1～2 times than traditional construction method.
Accompanying drawing explanation:
Fig. 1 is the pre-buried guide rail structure schematic diagram of the utility model;
Fig. 2 is that the pre-buried guide rail of the utility model is used state Local map;
Fig. 3 is that the U-shaped caliber of the utility model limits card structure schematic diagram;
Fig. 4 is the use view of the pre-buried guide rail of the utility model in circular cavern.
The specific embodiment:
Referring to Fig. 1～Fig. 4, the pre-buried guide rail of the utility model by two reinforcing bars 1 as one group, by bending welding, it after moulding, is annular, be laid in the front whole shield structure lining cutting circular holes chamber surface of concreting, form circuit, pre-buried guide rail two ends are connected to prefabricated ground tackle groove 9, between ground tackle groove 9 two-port, horn mouth 10 are installed in advance.In figure, 7 is Dong Shibi, and 8 is concrete floor.
Described two reinforcing bar 1 spacing are 100mm～120mm.
Described reinforcing bar 1 adopts Φ 12mm～Φ 14mm screw-thread steel.
The construction method of pre-buried guide rail in duct is pre-buried, comprises the following steps:
1) by measuring and locating, determine the mounting center line of every bellows 4 in tunnel, according to bellows mounting center line, determine the installation site of pre-buried guide rail 2;
2) pre-buried guide rail 2 by two reinforcing bars as one group, two rebar spacings are 100mm～120mm, the mounting center line of pre-buried guide rail overlaps with bellows mounting center line, length and trend that the trend of pre-buried guide rail is installed with bellows with length are consistent, pre-buried guide rail circularizes and is laid in the front whole shield structure lining cutting circular holes chamber surface of concreting, forms circuit; Pre-buried guide rail two ends are connected to prefabricated ground tackle groove 9, between ground tackle groove 9 two-port, horn mouth 10 are installed in advance;
3) at the interior installation bellows 4 of pre-buried guide rail 2, the line style of pre-buried guide rail 2 guiding bellowss 4;
4) accurately location and installation good after, pre-buried guide rail and bellows and tunnel lining structure reinforcing bars are welded and fixed;
5) complete after above-mentioned operation, on bellows, every 0.8m～1.0m, U-shaped caliber is installed and is limited card 3, shape and cross-sectional shape of bellows that U-shaped caliber limits card adapt, U-shaped caliber limits card and is staggeredly arranged with the galvanized wire of colligation bellows and pre-buried guide rail, and the card article 6 that U-shaped caliber limits card is welded and fixed with pre-buried guide rail; Make U-shaped caliber limit card and limit fixedly bellows installation site, guarantee bellows install after in concrete casting process not because concrete is built uplift pressure and vibration is subjected to displacement and damages.
Described bellows adopts Φ 90mm～Φ 95mm steel screw thread bellows.
Described U-shaped caliber limits the card article 6 that card 3 comprises arc top 5 and 5 two ends, arc top, and arc top 5 and card article 6 form U-shaped body.
Institute is set forth in U-shaped body and adopts 8# round steel to make, and round steel is the round steel of available other model also, and 8# round steel is cost-saving.
Long 24cm～the 30cm of described round steel.
Claims (3)
1. a pre-buried guide rail, it is characterized in that by two reinforcing bars (1), as one group, being laid in circular holes chamber surface, form circuit, pre-buried guide rail two ends are connected to prefabricated ground tackle groove (9), between ground tackle groove (9) two-port, horn mouth (10) are installed in advance.
2. pre-buried guide rail according to claim 1, is characterized in that two reinforcing bars (1) spacing is 100mm～120mm.
3. pre-buried guide rail according to claim 1, is characterized in that reinforcing bar (1) adopts Φ 12mm～Φ 14mm screw-thread steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394160.4U CN203977384U (en) | 2014-07-16 | 2014-07-16 | Pre-buried guide rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394160.4U CN203977384U (en) | 2014-07-16 | 2014-07-16 | Pre-buried guide rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203977384U true CN203977384U (en) | 2014-12-03 |
Family
ID=51974842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420394160.4U Withdrawn - After Issue CN203977384U (en) | 2014-07-16 | 2014-07-16 | Pre-buried guide rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203977384U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088262A (en) * | 2014-07-16 | 2014-10-08 | 中国水利水电第七工程局成都水电建设工程有限公司 | Pre-embedded guide rail and pre-embedded guide rail construction method in duct pre-embedding |
-
2014
- 2014-07-16 CN CN201420394160.4U patent/CN203977384U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088262A (en) * | 2014-07-16 | 2014-10-08 | 中国水利水电第七工程局成都水电建设工程有限公司 | Pre-embedded guide rail and pre-embedded guide rail construction method in duct pre-embedding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |