CN110863849B - Anchor rod rust prevention method for rail anchor box support - Google Patents
Anchor rod rust prevention method for rail anchor box support Download PDFInfo
- Publication number
- CN110863849B CN110863849B CN201911115256.6A CN201911115256A CN110863849B CN 110863849 B CN110863849 B CN 110863849B CN 201911115256 A CN201911115256 A CN 201911115256A CN 110863849 B CN110863849 B CN 110863849B
- Authority
- CN
- China
- Prior art keywords
- anchor box
- anchor
- rust
- water
- parts
- 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.)
- Active
Links
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000002265 prevention Effects 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 13
- 230000003487 anti-permeability effect Effects 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 10
- 239000000243 solution Substances 0.000 description 7
- 230000008094 contradictory effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
- C10M2211/022—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an anchor of a track anchor box supportThe pole rust prevention method of the rail anchor box support comprises the following steps: the prepared density is 1.1-1.3g/cm3Water-insoluble rust-preventive liquid; and injecting the antirust liquid into the anchor box from the bolt connecting gap at the top of the anchor box by using a miniature grouting pipe with the length of the extending section of 23-35cm and the outer diameter of the extending section of 1.6-2.4mm, and finishing grouting operation after the antirust liquid overflows from the bolt connecting gap at the top of the anchor box. The technical scheme of the invention can reduce the maintenance cost of the anchor rod of the support of the track anchor box and improve the antirust effect.
Description
Technical Field
The invention relates to the technical field of rail anchor box maintenance, in particular to an anchor rod rust prevention method for a rail anchor box support.
Background
Referring to fig. 1 and 2, the conventional rail anchor box support structure includes a support portion, a base portion and accessories, wherein the support portion mainly includes a base plate 20, an anchor box 30, an anchor rod 40, a bolt 50 and a chain joint glue system 60. The upper pendulum of the link glue system 60 is integrally cast with the PC track beam 10 through an anchor rod to bear various combined loads in the self weight of the PC track beam 10 and the running process of the vehicle. The skirt of the chain link system 60 is connected to the base portion by the base plate 20, anchor box 30, anchor bar 40, and bolt 50. The track beam support is connected with the anchor box 30 and is infiltrated by underground water and rainwater for a long time, a large amount of accumulated water exists in the anchor box support, and the anchor rod 40 in the anchor box 30 is corroded due to long-term exposure to water environment, so that great potential safety hazards exist.
The existing daily maintenance process deals with the corrosion problem by replacing a new anchor rod, a large amount of manpower and material resources are consumed in the method, the replacement difficulty of the anchor rod reinforcing steel bar in the anchor box is high, and the maintenance cost is huge. Meanwhile, because the original accumulated water in the anchor box is not provided with a pumping and draining channel, the accumulated water in the anchor box is difficult to be pumped out of the anchor box, and the anchor rod reinforcing steel bar is corroded under the action of a large amount of accumulated water, so that the working performance of the track beam is influenced.
Disclosure of Invention
The invention mainly aims to provide an anchor rod rust prevention method for a track anchor box support, aiming at reducing the maintenance cost of maintaining the anchor rod of the track anchor box support and improving the rust prevention effect.
In order to achieve the purpose, the anchor rod rust prevention method of the rail anchor box support comprises the following steps:
the prepared density is 1.1-1.3g/cm3Water-insoluble rust-preventive liquid;
and (3) injecting the antirust liquid into the anchor box from the bolt connection gap at the top of the anchor box by using a miniature grouting pipe with the length of the extending section of 23-35cm and the outer diameter of the extending section of 1.6-2.4mm, and finishing grouting operation after the antirust liquid overflows from the bolt connection gap at the top of the anchor box.
Preferably, the antirust liquid comprises the following components in parts by weight:
4275-85 parts of chlorinated alkane
7012-18 parts of chlorinated alkane
3-7 parts of an anti-permeability agent.
Preferably, the antirust liquid comprises the following components in parts by weight:
4280 parts of chlorinated alkane
7015 parts of chlorinated alkane
5 parts of an anti-permeability agent.
Preferably, the inner diameter of the protruding section of the micro grouting pipe is 1.4-1.8 mm.
Preferably, the miniature slip casting pipe include the linkage segment with stretch into the section, stretch into section one end be equipped with stretch into guide needle, the other end with the linkage segment is connected.
Preferably, the length of the connecting section is greater than or equal to 2 cm.
Preferably, the length of the micro grouting pipe is 25cm, and the length of the extending section of the micro grouting pipe is 23cm, the outer diameter is 2mm, and the inner diameter is 1.6 mm.
Preferably, the anti-rust liquid is injected into the anchor box from a bolt connecting gap at the top of the anchor box by using a miniature grouting pipe with the length of the extending section of 23-35cm and the outer diameter of the extending section of 1.6-2.4mm, and the injection flow rate of the anti-rust liquid is 0.8-2.0L/min in the step of completing the grouting operation after the anti-rust liquid overflows from the bolt connecting gap at the top of the anchor box.
According to the technical scheme, the anti-rust liquid with the density larger than that of water is injected into the anchor box from the bolt connecting gap at the top of the anchor box, and because the anti-rust liquid is higher in density than water and is not melted with the water, the anti-rust liquid discharges the water and sinks below the water bottom, so that the accumulated water in the anchor box is slowly lifted to the bolt connecting gap at the top of the anchor box and is discharged. After the anchor box is filled with the antirust liquid, the seepage water and the rainwater can not enter the anchor box, so that the anchor rod reinforcing steel bars are protected. The method solves the problem of draining accumulated water in the anchor box, plays a role in protecting the anchor rod reinforcing steel bars, is simple to operate, can reduce the complex process of replacing the anchor rod reinforcing steel bars, saves labor and reinforcing steel bar cost, reduces the maintenance cost of maintaining the anchor rod of the support of the track anchor box, and can improve the antirust effect.
Drawings
FIG. 1 is a schematic structural diagram of a conventional rail anchor box support;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a flow chart of an embodiment of the anchor rod rust prevention method of the rail anchor box support of the present invention;
FIG. 4 is a schematic diagram illustrating the operation of step S2 in FIG. 3;
fig. 5 is a schematic structural view of the micro grouting pipe in fig. 4.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides an anchor rod rust prevention method for a track anchor box support.
Referring to fig. 3 to 5, and as will be understood in conjunction with fig. 1 and 2, in an embodiment of the present invention, the method for rust prevention of the anchor rod of the rail anchor box support includes the following steps:
s1, preparation density of 1.1-1.3g/cm3Water-insoluble rust-preventive liquid;
wherein the antirust liquid has a density higher than that of water, is not dissolved in water, and can sink drained water to the bottom of the water.
S2, injecting the antirust liquid 100 into the anchor box 300 from the bolt 50 connecting gap 70 at the top of the anchor box 300 by using the miniature grouting pipe 80 with the length Le of the extending section 82 of 23-35cm and the outer diameter D of the extending section 82 of 1.6-2.4mm, and finishing grouting operation after the antirust liquid 100 overflows from the bolt 50 connecting gap 70 at the top of the anchor box 300.
Because the width of the connecting gap 70 of the bolt 50 at the top of the anchor box 300 is only about 3mm, and the micro grouting pipe 80 needs to be as small and long as possible, the antirust liquid 100 can be injected into the anchor box 300, in the invention, the grouting operation is carried out by adopting the grouting machine 90 and the specially-made micro grouting pipe 80, the length Le of the extending section 82 of the micro grouting pipe 80 is 23-35cm, and the outer diameter D of the extending section is 1.6-2.4mm, so that the better injection effect can be ensured. Because anchor case 300 does not reserve the wash port, ponding can't pump drainage, through pouring into anchor case 300 with the antirust liquid 100 that density is greater than water through connecting bolt 50 department gap 70, with ponding 110 lifting to connecting bolt 50 department gap 70 discharge, protect stock 40, prevent stock 40 corrosion, guarantee stock 40 long-term job stabilization nature.
According to the technical scheme, the anti-rust liquid 100 with the density larger than that of water is injected into the anchor box 300 from the position of the connecting gap 70 of the bolt 50 at the top of the anchor box 300, and as the anti-rust liquid 100 is larger than that of water and is not melted with the water, the anti-rust liquid 100 drains water and sinks below the water bottom, so that the accumulated water 110 in the anchor box 300 is slowly lifted to the position of the connecting gap 70 of the bolt 50 at the top of the anchor box 300 and is drained. After the anchor box 300 is filled with the antirust liquid 100, the seepage water and the rainwater can not enter the anchor box 300, thereby protecting the reinforcing steel bars of the anchor rod 40. The method solves the problem of discharging accumulated water 110 in the anchor box 300, plays a role in protecting the reinforcing steel bars of the anchor rod 40, is simple to operate, can reduce the complex process of replacing the reinforcing steel bars of the anchor rod 40, saves labor and reinforcing steel bar cost, reduces the maintenance cost of maintaining the track anchor box 300 and supporting the anchor rod 40, and can improve the antirust effect.
In the embodiment, in order to achieve a better antirust effect, a specific antirust liquid 100 is prepared, and the antirust liquid 100 comprises the following components in parts by weight:
4275-85 parts of chlorinated alkane
7012-18 parts of chlorinated alkane
3-7 parts of an anti-permeability agent.
The chlorinated alkane has the advantages of low volatility, flame retardance, good electrical insulation, low price and the like, is stable in structure and insoluble in water, and can well isolate air and water to realize an antirust function. The anti-permeability agent is aging-resistant, non-deterioration, strong in crack resistance and puncture-resistant, can be used in various waterproof projects, and can block capillary channels of concrete or mortar, so that cement and cement mortar have hydrophobicity, the anti-permeability capability of the concrete is improved, and the compactness and the anti-permeability are improved. The anti-permeability agent is selected from common anti-permeability agents.
In specific implementation, the antirust liquid 100 preferably comprises the following components in parts by weight:
4280 parts of chlorinated alkane
7015 parts of chlorinated alkane
5 parts of an anti-permeability agent.
Referring to fig. 5, in order to achieve the injection of the rust preventive liquid 100 and achieve a reasonable grouting effect, the inner diameter d of the extending section of the micro grouting pipe 80 is preferably set to be 1.4-1.8 mm. The micro grouting pipe 80 is connected with the grouting machine 90, so that the micro grouting pipe 80 comprises a connecting section 81 and the extending section 82, one end of the extending section 82 is provided with a guide needle 83, and the other end of the extending section is connected with the connecting section 81. The connecting section 81 connects the grouting machine 90 and fixes the extending section 82, and the extending section 82 is provided with a guide needle 83 so as to facilitate the micro grouting pipe 80 to extend into the small gap 70. In order to achieve a stable connection, the length Lb of the connection section 81 is preferably greater than or equal to 2 cm. Therefore, in practical operation, the length L of the micro grouting pipe 80 is 25cm, the length Le of the extending section 82 of the micro grouting pipe 80 is 23cm, the outer diameter D is 2mm, and the inner diameter D is 1.6 mm.
In order to achieve a good drainage effect and safely and effectively drain the accumulated water in the anchor box, in step S2, the injection flow rate of the antirust liquid 100 may be set to 0.8-2.0L/min. Meanwhile, in the later stage of grouting, a lower grouting speed can be selected, grouting is stopped until all accumulated water 110 in the anchor box 300 is discharged, and at the moment, the whole anchor box 300 is filled with the antirust liquid 100. Thus, through the slow injection of the antirust liquid 100, the drainage can be well realized, and the antirust effect is further ensured.
It should be noted that the technical solutions of the embodiments of the present invention can be combined with each other, but must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory or can not be realized, the combination of the technical solutions should be considered to be absent and not to be within the protection scope of the present invention.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.
Claims (7)
1. An anchor rod rust prevention method for a track anchor box support is characterized by comprising the following steps: the prepared density is 1.1-1.3g/cm3Water-insoluble rust-preventive liquid; injecting the antirust liquid into the anchor box from a bolt connection gap at the top of the anchor box by using a miniature grouting pipe with the length of the extension section of 23-35cm and the outer diameter of the extension section of 1.6-2.4mm, wherein the antirust liquid is higher in density than water and is not melted with water, and is used for draining water and sinking the drained water below the water bottom, so that the accumulated water in the anchor box is slowly lifted to the bolt connection gap at the top of the anchor box to be drained, and the grouting operation is finished after the antirust liquid overflows from the bolt connection gap at the top of the anchor box;
the antirust liquid comprises the following components in parts by weight: 4275-85 parts of chlorinated alkane, 7012-18 parts of chlorinated alkane, and 3-7 parts of an anti-permeability agent.
2. The anchor rod rust prevention method for the rail anchor box support according to claim 1, wherein the rust prevention liquid comprises the following components in parts by weight: 4280 parts of chlorinated alkane, 7015 parts of chlorinated alkane and 5 parts of anti-permeability agent.
3. The method for rust prevention of an anchor rod of a rail anchor box support according to claim 1, wherein the inner diameter of the protruding section of the micro grouting pipe is 1.4 to 1.8 mm.
4. The method for rust prevention of an anchor rod of a rail anchor box support according to claim 1, wherein the micro grouting pipe comprises a connecting section and the protruding section, one end of the protruding section is provided with a protruding guide needle, and the other end of the protruding section is connected with the connecting section.
5. The method of rust inhibiting anchor rods for a rail anchor box mount of claim 4 wherein the length of said connecting section is greater than or equal to 2 cm.
6. The rust prevention method for the anchor rod of the rail anchor box support according to claim 5, wherein the length of the micro grouting pipe is 25cm, and the length of the protruding section of the micro grouting pipe is 23cm, the outer diameter is 2mm, and the inner diameter is 1.6 mm.
7. The anchor rod rust-proofing method of a rail anchor box support according to claim 1, wherein in the step of injecting the rust-proofing liquid into the anchor box from the bolt connection gap at the top of the anchor box by using a micro grouting pipe having an extension section length of 23-35cm and an extension section outer diameter of 1.6-2.4mm, and completing the grouting operation after the rust-proofing liquid overflows from the bolt connection gap at the top of the anchor box, the injection flow rate of the rust-proofing liquid is 0.8-2.0L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911115256.6A CN110863849B (en) | 2019-11-14 | 2019-11-14 | Anchor rod rust prevention method for rail anchor box support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911115256.6A CN110863849B (en) | 2019-11-14 | 2019-11-14 | Anchor rod rust prevention method for rail anchor box support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110863849A CN110863849A (en) | 2020-03-06 |
| CN110863849B true CN110863849B (en) | 2021-12-07 |
Family
ID=69654067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911115256.6A Active CN110863849B (en) | 2019-11-14 | 2019-11-14 | Anchor rod rust prevention method for rail anchor box support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110863849B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795206B (en) * | 2020-06-10 | 2022-04-19 | 深圳市燃气集团股份有限公司 | Pipeline rust prevention method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH086371B2 (en) * | 1993-07-30 | 1996-01-24 | タキロン株式会社 | Repairing method for unfilled concrete cavity in anticorrosive sheet lining method |
| CN2423313Y (en) * | 2000-02-11 | 2001-03-14 | 宝鸡桥梁工厂 | Straddle type track traffic PC track beam support |
| CN201033913Y (en) * | 2007-04-04 | 2008-03-12 | 柳州欧维姆机械股份有限公司 | Anchor head conservation device for ring-anchor without binding bars |
| CN104118203A (en) * | 2014-08-01 | 2014-10-29 | 浙江卡尔克莱壁纸制造有限公司 | Security-type scraper |
| CN109967311A (en) * | 2019-03-13 | 2019-07-05 | 俞利祥 | A kind of Rustproofing apparatus of concrete punching block |
-
2019
- 2019-11-14 CN CN201911115256.6A patent/CN110863849B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110863849A (en) | 2020-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110863849B (en) | Anchor rod rust prevention method for rail anchor box support | |
| CN105064759B (en) | A kind of GFRP pipes reinforced concrete combined structure member multiloop power transmission rod | |
| CN212405512U (en) | Embedded column base connecting structure suitable for box column | |
| CN108999212A (en) | The template construction method of underground concrete pool wall antiseep | |
| KR101389285B1 (en) | Pc girder shift of the chest wall with a block end integrated method | |
| CN109826139A (en) | A kind of lightweight assembled RPC anti-collision wall wall and its construction method | |
| JP2006219829A (en) | Method of reinforcing concrete structure | |
| CN210946871U (en) | Anchor pier type power transmission iron tower foundation reinforcing structure | |
| JP6249267B2 (en) | Repair method for existing concrete structures | |
| KR101007012B1 (en) | Reinforcement structure for tunnel and reinforcement method using the same | |
| CN215253640U (en) | High-rise assembled prefabricated shear wall | |
| CN108643682A (en) | Steel structural upright column fixation precast base | |
| CN214194574U (en) | Be used for loose slope stability punishment structure | |
| CN204435203U (en) | Interlocking pile and the firm access node structure of casting top slab | |
| CN209675906U (en) | A kind of prefabricated cable tank systems | |
| CN209144837U (en) | The pattern foundation pit supporting structure of waterproof tensile | |
| CN209368859U (en) | A kind of foundation structure system of low-rise building | |
| CN113882283A (en) | Existing pier seismic transformation construction method based on low-damage concept | |
| JP6268250B1 (en) | Road bridge cover widening unit | |
| CN208136828U (en) | Narrow river Retaining Wall Reinforcement device | |
| CN112376600A (en) | Safe anti-seismic building pile | |
| JP4926866B2 (en) | Rehabilitation method and reinforcement structure of aging mortar spray slope and slope stabilization method | |
| CN216108580U (en) | Base for assembly type building | |
| CN216839960U (en) | Pin-connected panel post-cast strip shutoff subassembly | |
| CN214941624U (en) | Structure of ring beam additionally arranged on outer wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 400000 4 1-15-1, 89 Jin Yu Avenue, North New District, Chongqing Applicant after: CHONGQING GUOXIANG NEW MATERIAL Co.,Ltd. Address before: 400000 4 1-15-1, 89 Jin Yu Avenue, new North District, Chongqing, Yubei District Applicant before: CHONGQING GUOXIANG NEW MATERIAL Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |