CN109972613B - Recyclable anchoring mechanism and construction method - Google Patents
Recyclable anchoring mechanism and construction method Download PDFInfo
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- CN109972613B CN109972613B CN201910349631.7A CN201910349631A CN109972613B CN 109972613 B CN109972613 B CN 109972613B CN 201910349631 A CN201910349631 A CN 201910349631A CN 109972613 B CN109972613 B CN 109972613B
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- Prior art keywords
- anchor
- anchor rod
- anchor head
- anchoring mechanism
- annular body
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- 238000010276 construction Methods 0.000 title claims abstract description 46
- 238000004873 anchoring Methods 0.000 title claims description 45
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 46
- 239000010959 steel Substances 0.000 claims abstract description 46
- 230000001681 protective effect Effects 0.000 claims abstract description 23
- 239000004568 cement Substances 0.000 claims abstract description 15
- 235000014121 butter Nutrition 0.000 claims abstract description 6
- 238000013461 design Methods 0.000 claims description 19
- 238000005553 drilling Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000011083 cement mortar Substances 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 3
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 abstract description 9
- 238000012545 processing Methods 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
- E02D5/765—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor removable
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The utility model provides a recoverable anchor mechanism and construction method, this anchor mechanism includes anchor head, stock and steel strand wires, and the anchor head is cylindric structure, and center department has seted up the centre bore, and processing has the screw thread on the centre bore, and the anchor head work end is provided with the cone, and the anchor head passes through the centre bore and links to each other with the stock head end, and the stock is the twisted steel, steel strand wires one end is connected with cyclic annular body pressfitting, and steel strand wires follow cyclic annular body circumference evenly distributed, and cyclic annular body inner wall is provided with the internal thread, and cyclic annular body cover is established on stock tail end excircle, and the stock excircle is provided with the stopper that is located cyclic annular body tail end, and the diameter of stopper is greater than the diameter of stock, the cover is equipped with the protective housing on the excircle of stock and steel strand wires, and the inner circle face of protective housing one end closely laminates with the outer disc of anchor head tail end, has smeared butter between protective housing and the stock. The anchor head is consolidated by cement slurry, and the anchor rod part is subjected to unbonded treatment, so that the anchor head can be recycled for multiple times within the working life, limited resources are utilized, and greater economic benefits are exerted.
Description
Technical Field
The invention belongs to the technical field of stratum anchoring tools, and particularly relates to a recyclable anchoring mechanism and a construction method, which are particularly suitable for urban core parts with surrounding areas needing dense construction in the future.
Background
In the anchor rod (cable) construction in the fields of foundation pit support, slope management, large bridge and culvert engineering and the like at present, the anchor rod (cable) construction is visible everywhere, most of the anchor rod (cable) construction utilizes a steel strand cement slurry anchoring mode, and the finished product is not recyclable, so that steel is wasted, other peripheral constructions in the future are polluted, and particularly urban development and shield construction are deeply subjected to images. The construction quality, construction period and construction cost of the anchor rod (cable). The conventional treatment method has long construction period, single method and high manufacturing cost, and does not meet the large green and environment-friendly targets of the building industry in China.
Disclosure of Invention
In order to achieve the above purpose, the invention provides a recyclable anchoring mechanism, which comprises an anchor head, an anchor rod and steel strands, wherein the anchor head is of a cylindrical structure, a central hole is formed in the center, threads are machined on the central hole, a cone is arranged at the working end of the anchor head, the anchor head is connected with the head end of the anchor rod through the central hole, the anchor rod is a threaded reinforcing steel bar, one end of each steel strand is in press fit connection with an annular body, the steel strands are uniformly distributed along the circumferential direction of the annular body, an inner thread is arranged on the inner wall of the annular body, the annular body is sleeved on the outer circle of the tail end of the anchor rod, a limiting block positioned at the tail end of the annular body is arranged on the outer circle of the anchor rod, the diameter of the limiting block is larger than that of the anchor rod, a protective shell is sleeved on the outer circle of the anchor rod and the steel strands, the inner circle surface of one end of the protective shell is tightly attached to the outer circle surface of the tail end of the anchor head, and butter is smeared between the protective shell and the anchor rod.
The anchor head is made of engineering plastics, cement or ceramics, the anchor rod is made of screw steel bars with the weight of Q235 or more, and the protective shell is a rubber shell or a plastic shell.
The number of the steel strands is 3-5, each steel strand is made of seven steel wires with the diameter of 5mm, the diameter of the steel strand is 15.2mm, and the tensile strength grade is 1860 megapascals.
A construction method of a recyclable anchoring mechanism adopts a recyclable anchoring mechanism, and comprises the following steps:
step 1, screwing an anchor rod into a threaded hole of an anchor head, screwing a steel strand onto the outer circle of the anchor rod through an annular body according to field requirements, welding a limiting block on the outer circle of the anchor rod and positioned at the tail part of the annular body, sleeving a protective shell on the anchor rod and the steel strand after smearing butter on the outer circle of the anchor rod and the inner wall of the protective shell, and finishing the installation of an anchoring mechanism;
step 2, determining a drawing force experiment of an anchoring mechanism, drilling a plurality of holes (at least 3 holes) in a test area of a construction site through an anchor rope machine or an English-Grosven drilling machine according to the soil layer condition of the construction site, injecting cement paste, cement mortar or grouting materials into the holes, inserting a recyclable anchoring mechanism into the holes of the grouting materials through a cone end of an anchor head, standing for 4-7 days, tensioning one anchoring mechanism by using a tensioner when the anchoring mechanism stands for the fourth day, displaying the tensioning strength through an instrument panel of the tensioner, and ensuring that a design value A is 40-3600Mpa, and ensuring that the design requirement is met when the tensioning strength is equal to the design value A; when the tensile strength is smaller than the design value A, the design requirement is not met, the next anchoring mechanism is tensioned again through a tensioner every other day until the design requirement is met, and the standing days T are given;
step 3, drilling holes at the appointed position of the construction site where the anchoring mechanism is installed in the construction drawing by an anchor rope machine or an English-Grosven drilling machine according to the construction drawing and the soil layer condition of the construction site;
step 4, injecting cement paste, cement mortar or grouting materials into the holes according to specific construction conditions, inserting a recyclable anchoring mechanism into the holes for grouting the cement paste through the cone end of the anchor head, stretching the anchoring mechanism by using a stretching device after standing for T days, displaying that the stretching strength is A Mpa through a stretching device instrument panel, and then meeting design requirements, and finishing the construction of the anchoring mechanism;
and 5, after the anchoring mechanism is used, firstly rotating the anchor rod until the anchor rod extends out of the tail of the anchor head through a torque wrench, and then pulling out the anchor rod and the steel strand part through a hydraulic drawing pump for the next construction.
The beneficial effects of the invention are as follows:
the anchoring mechanism is particularly suitable for foundation pit treatment of cities erected in high buildings, and avoids pollution to other foundation pits constructed in the future. The cement paste is mainly used for solidifying the anchor head, and the anchor rod part is subjected to non-binding treatment, so that the anchor head can be recycled for multiple times within the service life, limited resources are utilized, and greater economic benefits are brought into play; meanwhile, the method avoids single treatment method of other processes, has the advantages of low success rate, high speed, low cost and recycling and repeated use, and avoids secondary pollution caused by subway shield construction in the construction process of peripheral structures in the future.
Drawings
FIG. 1 is a schematic view of an anchoring mechanism according to the present invention;
the novel anchor comprises a 1-anchor head, a 2-anchor rod, a 3-protective shell, a 4-annular body, a 5-limiting block, 6-steel strands and a 7-cone.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
As shown in FIG. 1, a recoverable anchor mechanism, including anchor head 1, stock 2 and steel strand wires 6, anchor head 1 is cylindric structure, and center department has seted up the centre bore, processing has the screw thread on the centre bore, anchor head 1 work end integrated into one piece has cone 7, and anchor head 1 makes stock 2 and anchor head 1 fixed mounting through the internal thread of centre bore and stock 2 external screw thread spiro union, and stock 2 is the screw thread reinforcing bar, steel strand wires 6 one end and cyclic annular body 4 pressfitting are connected, and three steel strand wires 6 evenly distributed along cyclic annular body 4 circumference, and cyclic annular body 4 is through the internal thread on it and stock 2 tail end external screw thread spiro union, makes steel strand wires 6 fixed mounting on stock 2, is provided with stopper 5 that is located cyclic annular body 4 tail end on the stock 2 excircle, and the diameter of stopper 5 is greater than stock 2, prevents that steel strand wires 6 under the circumstances of atress, stock 2 and steel strand wires 6's excircle on the cover be equipped with protective housing 3, and protective housing 3 one end interior round face and anchor head 1 excircle face closely laminate, protective housing 3 prevents grout body entering anchor head 2, prevent that the end from using and can't be used between the anchor head 2 and the anchor head 2, prevent to smear the protective housing 2 with the steel strand wires 2 after the end portion from using.
The anchor head 1 is made of engineering plastics, has high strength, is easy to process, has low cost and high yield, can be made of cement or ceramics, the anchor rod 2 is made of screw reinforcement with the weight of Q235 or more, the protective shell 3 is a rubber shell or a plastic shell, when the plastic shell is used as the protective shell 3, one end of the plastic shell is heated by a heating device, then a heating end is supported by a rod-shaped body, and finally the heating end is sleeved on the excircle of the tail end of the anchor head 1.
The number of the steel strands 6 is 3-5, each steel strand 6 is made of seven steel wires with the diameter of 5mm, the diameter of the steel strand 6 is 15.2mm, and the tensile strength grade is 1860 megapascals.
A construction method of a recyclable anchoring mechanism adopts a recyclable anchoring mechanism, and comprises the following steps:
step 1, firstly screwing an anchor rod 2 into a threaded hole of an anchor head 1, secondly screwing a steel strand 6 onto the outer circle of the anchor rod 2 through an annular body 4 according to field requirements, sleeving an annular limiting block 5 on the anchor rod 2, welding the limiting block 5 and the anchor rod 2 together and being positioned at the tail part of the annular body 4, and finally sleeving a protective shell 3 on the anchor rod 2 and the steel strand 6 after smearing butter on the outer circle of the anchor rod 2 and the inner wall of the protective shell 3, thereby completing the installation of an anchoring mechanism;
step 2, determining a drawing force experiment of an anchoring mechanism, drilling a plurality of holes (at least 3 holes) in a test area of a construction site through an anchor rope machine or an English-Grosven drilling machine according to the soil layer condition of the construction site, injecting cement paste, cement mortar or grouting materials into the holes, inserting a recyclable anchoring mechanism into the holes of the grouting materials through the cone 7 end of an anchor head 1, standing for 4-7 days, tensioning one anchoring mechanism by using a tensioner when the anchoring mechanism stands for the fourth day, displaying the tensioning strength through an instrument panel of the tensioner, and meeting the design requirement when the tensioning strength is equal to a design value of 80 Mpa; when the tensile strength is smaller than the design value of 80Mpa, the design requirement is not met, the next anchoring mechanism is tensioned again through a tensioner every other day until the design requirement is met, and the standing days are given for 4 days;
step 3, drilling holes at the appointed position of the construction site where the anchoring mechanism is installed in the construction drawing by an anchor rope machine or an English-Grosven drilling machine according to the construction drawing and the soil layer condition of the construction site;
step 4, injecting cement paste, cement mortar or grouting materials into the holes according to specific construction conditions, inserting a recyclable anchoring mechanism into the holes for grouting the cement paste through the cone 7 end of the anchor head 1, standing for 4 days, tensioning the anchoring mechanism by using a tensioner, displaying that the tensile strength is 80Mpa through a tensioner instrument panel, and then meeting design requirements, and finishing the construction of the anchoring mechanism;
and 5, after the anchoring mechanism is used, firstly rotating the anchor rod 2 until the tail part of the anchor head 1 extends out through a torque wrench, and then partially pulling out the anchor rod 2 and the steel strand 6 through a hydraulic drawing pump so as to be used for next construction.
Claims (3)
1. The construction method of the recyclable anchoring mechanism comprises the steps of an anchor head, an anchor rod and steel strands, wherein the anchor head is of a cylindrical structure, a central hole is formed in the center of the anchor head, threads are machined on the central hole, a cone is arranged at the working end of the anchor head, the anchor head is connected with the head end of the anchor rod through the central hole, the anchor rod is a threaded reinforcing steel bar, one end of each steel strand is in press fit connection with an annular body, the steel strands are uniformly distributed along the circumferential direction of the annular body, an inner thread is arranged on the inner wall of the annular body, the annular body is sleeved on the outer circle of the tail end of the anchor rod, a limiting block positioned at the tail end of the annular body is arranged on the outer circle of the anchor rod, the diameter of the limiting block is larger than that of the anchor rod, a protective shell is sleeved on the outer circle of the anchor rod and the steel strands, the inner circle surface of one end of the protective shell is tightly attached to the outer circle surface of the tail end of the anchor head, and butter is smeared between the protective shell and the anchor rod; the method is characterized by comprising the following steps of:
step 1, screwing an anchor rod into a threaded hole of an anchor head, screwing a steel strand onto the outer circle of the anchor rod through an annular body according to field requirements, welding a limiting block on the outer circle of the anchor rod and positioned at the tail part of the annular body, sleeving a protective shell on the anchor rod and the steel strand after smearing butter on the outer circle of the anchor rod and the inner wall of the protective shell, and finishing the installation of an anchoring mechanism;
step 2, determining a drawing force experiment of an anchoring mechanism, drilling a plurality of holes in a test area of a construction site through an anchor rope machine or an English-Grosven drilling machine according to the soil layer condition of the construction site, injecting cement paste, cement mortar or grouting materials into the holes, inserting a recyclable anchoring mechanism into the holes of grouting paste through a cone end of an anchor head, standing for 4-7 days, tensioning one anchoring mechanism by using a tensioner when standing for the fourth day, displaying the tensioning strength through a tensioner instrument panel, and setting a value A to 40-3600Mpa, wherein when the tensioning strength is equal to the design value A, the design requirement is met; when the tensile strength is smaller than the design value A, the design requirement is not met, the next anchoring mechanism is tensioned again through a tensioner every other day until the design requirement is met, and the standing days T are given;
step 3, drilling holes at the appointed position of the construction site where the anchoring mechanism is installed in the construction drawing by an anchor rope machine or an English-Grosven drilling machine according to the construction drawing and the soil layer condition of the construction site;
step 4, injecting cement paste, cement mortar or grouting materials into the holes according to specific construction conditions, inserting a recyclable anchoring mechanism into the holes for grouting the cement paste through the cone end of the anchor head, stretching the anchoring mechanism by using a stretching device after standing for T days, displaying that the stretching strength is A Mpa through a stretching device instrument panel, and then meeting design requirements, and finishing the construction of the anchoring mechanism;
and 5, after the anchoring mechanism is used, firstly rotating the anchor rod until the anchor rod extends out of the tail of the anchor head through a torque wrench, and then pulling out the anchor rod and the steel strand part through a hydraulic drawing pump for the next construction.
2. The method of constructing a recyclable anchor mechanism as set forth in claim 1, wherein: the anchor head is made of engineering plastics, cement or ceramics, the anchor rod is made of screw steel bars with the weight of Q235 or more, and the protective shell is a rubber shell or a plastic shell.
3. The method of constructing a recyclable anchor mechanism as set forth in claim 1, wherein: the number of the steel strands is 3-5, each steel strand is made of seven steel wires with the diameter of 5mm, the diameter of the steel strand is 15.2mm, and the tensile strength grade is 1860 megapascals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910349631.7A CN109972613B (en) | 2019-04-28 | 2019-04-28 | Recyclable anchoring mechanism and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910349631.7A CN109972613B (en) | 2019-04-28 | 2019-04-28 | Recyclable anchoring mechanism and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109972613A CN109972613A (en) | 2019-07-05 |
| CN109972613B true CN109972613B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910349631.7A Active CN109972613B (en) | 2019-04-28 | 2019-04-28 | Recyclable anchoring mechanism and construction method |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7197787A (en) * | 1986-04-28 | 1987-10-29 | Vsl International Ag | Method of making a removable tension member |
| CN2480547Y (en) * | 2001-03-29 | 2002-03-06 | 淮南工业学院 | Anchoring-bolt with screw end |
| CN1888326A (en) * | 2006-07-26 | 2007-01-03 | 中冶沈勘工程技术有限公司 | Two-purpose boring bar and hole-protecting casing soil anchor bolt boring technology |
| CN101570970A (en) * | 2008-04-07 | 2009-11-04 | 李宪奎 | Construction method of cement soil anchor and anchor plate combined member thereof |
| CN101974904A (en) * | 2010-11-05 | 2011-02-16 | 王景军 | Screw anchor rod and processing method using screw anchor rod |
| CN102605780A (en) * | 2012-04-17 | 2012-07-25 | 周治国 | Recyclable anchor rod for foundation pit support and construction method thereof |
| CN103362124A (en) * | 2013-07-17 | 2013-10-23 | 重庆岩安科技有限公司 | Recoverable anchor cable for civil engineering |
| CN104278674A (en) * | 2014-09-22 | 2015-01-14 | 华汇工程设计集团股份有限公司 | Recyclable expansion anchor rod and construction method thereof |
| WO2015044627A1 (en) * | 2013-09-24 | 2015-04-02 | Excalibur Screwbolts Limited | Improvements in or relating to anchor bolts |
| CN204849760U (en) * | 2015-07-30 | 2015-12-09 | 吴龙梁 | Recoverable prestressed anchorage pole |
| CN105714823A (en) * | 2016-03-22 | 2016-06-29 | 兰州理工大学 | Recoverable quick-anchoring and body-expanding type anchor rope and construction method |
| CN208379586U (en) * | 2018-06-15 | 2019-01-15 | 江苏开放大学（江苏城市职业学院） | A kind of demountable Simple anchor rod |
| CN210031793U (en) * | 2019-04-28 | 2020-02-07 | 中冶沈勘工程技术有限公司 | Recoverable anchoring mechanism |
-
2019
- 2019-04-28 CN CN201910349631.7A patent/CN109972613B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7197787A (en) * | 1986-04-28 | 1987-10-29 | Vsl International Ag | Method of making a removable tension member |
| CN2480547Y (en) * | 2001-03-29 | 2002-03-06 | 淮南工业学院 | Anchoring-bolt with screw end |
| CN1888326A (en) * | 2006-07-26 | 2007-01-03 | 中冶沈勘工程技术有限公司 | Two-purpose boring bar and hole-protecting casing soil anchor bolt boring technology |
| CN101570970A (en) * | 2008-04-07 | 2009-11-04 | 李宪奎 | Construction method of cement soil anchor and anchor plate combined member thereof |
| CN101974904A (en) * | 2010-11-05 | 2011-02-16 | 王景军 | Screw anchor rod and processing method using screw anchor rod |
| CN102605780A (en) * | 2012-04-17 | 2012-07-25 | 周治国 | Recyclable anchor rod for foundation pit support and construction method thereof |
| CN103362124A (en) * | 2013-07-17 | 2013-10-23 | 重庆岩安科技有限公司 | Recoverable anchor cable for civil engineering |
| WO2015044627A1 (en) * | 2013-09-24 | 2015-04-02 | Excalibur Screwbolts Limited | Improvements in or relating to anchor bolts |
| CN104278674A (en) * | 2014-09-22 | 2015-01-14 | 华汇工程设计集团股份有限公司 | Recyclable expansion anchor rod and construction method thereof |
| CN204849760U (en) * | 2015-07-30 | 2015-12-09 | 吴龙梁 | Recoverable prestressed anchorage pole |
| CN105714823A (en) * | 2016-03-22 | 2016-06-29 | 兰州理工大学 | Recoverable quick-anchoring and body-expanding type anchor rope and construction method |
| CN208379586U (en) * | 2018-06-15 | 2019-01-15 | 江苏开放大学（江苏城市职业学院） | A kind of demountable Simple anchor rod |
| CN210031793U (en) * | 2019-04-28 | 2020-02-07 | 中冶沈勘工程技术有限公司 | Recoverable anchoring mechanism |
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| Publication number | Publication date |
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| CN109972613A (en) | 2019-07-05 |
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