EP0924347B1 - Safety barrier terminal for motorway guard-rail - Google Patents
Safety barrier terminal for motorway guard-rail Download PDFInfo
- Publication number
- EP0924347B1 EP0924347B1 EP97830691A EP97830691A EP0924347B1 EP 0924347 B1 EP0924347 B1 EP 0924347B1 EP 97830691 A EP97830691 A EP 97830691A EP 97830691 A EP97830691 A EP 97830691A EP 0924347 B1 EP0924347 B1 EP 0924347B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- terminal
- post
- breakable
- segments
- road safety
- 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 - Lifetime
Links
- 230000004888 barrier function Effects 0.000 title claims description 45
- 230000000452 restraining effect Effects 0.000 claims abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 9
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/143—Protecting devices located at the ends of barriers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
- E01F15/0461—Supports, e.g. posts
Definitions
- Safety barriers of the "guard-rail” type are currently known, which comprise a horizontal, longitudinal member, or stringer, which may consist of a strip of corrugated sheet iron mounted on uprights or posts.
- stringer which may consist of a strip of corrugated sheet iron mounted on uprights or posts.
- These safety barriers present quite safe and predictable results in the event of impact of a vehicle at angles of trajectory which are not too wide with respect to the longitudinal extent of the barrier.
- a widely adopted solution consists in setting the terminal segment of the barrier inclined downwards to the ground; this prevents a head-on collision of a vehicle with an end of the barrier at a dangerous height, but may cause the vehicle to leave the ground and even reach dangerous heights.
- barrier terminals that are able to absorb energy by means of telescoping, said terminals comprising various barrier segments which are fastened to one another in longitudinal succession by means of calibrated bolts engaged in slots in the segments; the barrier is double at least at the terminal portion, and each couple of parallel segments of the guard-rail are supported by a wooden post, which has a through hole at a certain height so as to be able to withstand impacts that are transverse to the barrier but to break under an impact of preset magnitude that is longitudinal to the barrier.
- the impact of a vehicle against the terminal causes the screws and posts to break, and the sections to telescope one over another.
- the known terminals of this type are widely used in some states of the United States, however, they have the drawback that, since a particularly high-priced type of wood must be used, the cost of such barriers is relatively high already when the wood is locally available; if they were to be transported as they are to other areas, the cost of the posts would be prohibitive, also considering that it is not possible to restore them after impact. In addition, the stiffness of the posts is anyway excessive and relatively dangerous.
- the state of the art also includes a safety barrier for motorways made of a single strip of curved section on the end of which is mounted a widened headpiece provided with a system of rollers.
- a safety barrier for motorways made of a single strip of curved section on the end of which is mounted a widened headpiece provided with a system of rollers.
- a variant of this system comprises a terminal with headpiece equipped with particular knives, which, in the event of impact of a vehicle, runs along the strip of the guard-rail so that the knives cut the guard-rail up into thin slices.
- the absorption of energy is provided by the longitudinal cutting of the strip.
- shock-attenuators are devices that are set to protect a particular object, which is considered to be dangerous or to be in a dangerous position for traffic. Shock-attenuators differ from terminals in that they present better performance and higher costs. In fact, a terminal functions only in so far as it is connected to a safety barrier, whereas a shock-attenuator may function even when it is isolated, protecting a dangerous but relatively narrow obstacle, such as the pier of a bridge or the end of a low wall.
- the aim of this invention is to make a terminal for road safety barriers which enables good absorption of energy in the event of impact, good retention of the vehicle, and hence provides a good level of safety, and at the same time may be made and restored at acceptable costs.
- the new terminal comprises a longitudinally extended strip made up of a number of barrier segments provided with elongated slots in which screws for joining the segments together are screwed at a calibrated tightening torque; it further comprises a headpiece of the terminal applied on an outermost segment; each segment is mounted on an upright or post, which is made up of two half-posts, the bottom one of which is driven into the ground for a substantial portion of its height, and the top one is mounted on the bottom one by means of a predictably breakable transverse pin, i.e. a pin having a preset breaking strength, and preferably presenting a groove which engages with a peg of the bottom half-post.
- a predictably breakable transverse pin i.e. a pin having a preset breaking strength
- a tie rod is mounted, which comprises in its lenght a weakened section with a predictable or preset breaking strength.
- the headpiece comprises a plate which is set transverse to the longitudinal extension of the barrier and is provided with a protruding frame for retention of the vehicle, so as to prevent a vehicle that hits the terminal from sliding sideways without being able to exploit the absorption of energy provided by the terminal.
- the new terminal enables a good absorption of energy, and hence a considerable degree of safety, for a vehicle in the event of impact of the latter against the terminal with a substantial component of force parallel to the longitudinal extent of the barrier or guard-rail.
- it has relatively reasonable production and installation costs, and it may be restored rapidly and at reasonable costs.
- a safety terminal for road safety barriers is indicated as a whole by reference 10 in the figures and is suitable for being applied to the ends of road safety barriers of the guard-rail type, which comprise one or more strips of corrugated sheet metal supported by uprights or posts.
- the terminal 10 basically comprises a number of segments 12 of elastic metal strip, each of which is referenced 12a, 12b, 12c, ... respectively, starting from the outermost segment 12a.
- Each of the segments 12a, 12b, 12c, ..., as may be seen in Figures 3, 11 and 12, comprises a corrugated metal strip with double corrugation, with longitudinal slits or slots aligned in two parallel rows, referenced 13 and 14 respectively.
- the slots 13 of one row and the slots 14 of the other row are mutually staggered in a longitudinal direction.
- the segments of corrugated section bar, 12a, 12b, 12c are fastened together, in a per se known way, by means of bolts 15.
- a supporting upright or post is provided, respectively referenced 18a, 18b, 18c, etc., whilst the reference 18 indicates an end upright which supports a headpiece 20 applied to the end segment 12a.
- Each upright or post comprises a bottom half-post and a top half-post, respectively referenced 18' and 18" for the post 18, 18'a and 18"a for the post 18a, and likewise 18'b and 18"b for the post 18b, and 18'c and 18"c for the post 18c.
- the bottom half-posts have a bottom retaining rod or peg 16 and, set at the top, a predictably breakable pin 17, i.e. a pin having a preset breaking strength, upon which the top half-post engages.
- the pin 17 passes through registering holes of the bottom half-post and in the top half-post, whilst rod 16 is engaged in a recess 16' of the top half-post.
- the bottom half-post is made of I-section and the top half-post of channel section, whilst reinforcements 19 are provided along the flanges of the metal section which forms the top half-post.
- the tie rod 30 is stretched which is anchored with one end thereof on the bottom half-post 18' of 18 and with the other end thereof on the top half-post 18''a.
- the tie rod 30 generally comprises a cable portion, a tensioning device which is per se known, and preferably comprises a predictably breakable plate 32, i.e. a plate having a preset breaking strength, generally consisting, as may be seen from Figures 9 and 10, of a metal plate with one narrow portion 33.
- the head or headpiece 20 ( Figures 5, 11 and 12) comprises an end plate, referenced 22, which is substantially orthogonal to the longitudinal extent of the barrier and fastened to the end of the end segment of metal section 12a by means of a bottom bracket 24 and an oblique arm 25.
- the plate 22 comprises a restraining projection 26 set around the perimeter of the plate close to the latter's periphery.
- the said restraining projection has the purpose of restraining a vehicle which collides against the headpiece so as to prevent any lateral displacements of the vehicle that might cause it to swerve and thus fail to exploit the possibilities of absorption of energy of the safety terminal, with consequent greater risks.
- the restraining projection generally consists of a bent metal sheet welded to the base plate 22.
- the new terminal for guard-rails or road safety barriers is mounted with the uprights driven into the ground almost up to the full height of the bottom half-posts 18', 18'a, etc., as is indicated by the dashed line S in Figures 1, 3 and 4.
- the energy of impact is substantially dissipated by the frictional force between the elements 12a, 12b, etc., by the breaking of the bridges that separate the slots of the said elements; by the breaking of the breakable plate 32; and by the breaking of the pegs 17 of the uprights.
- the terminal may be restored relatively easily by replacing the barrier elements 12, 12a, etc. that have been deformed, by replacing the tie-rod element 30, by replacing the calibrated pins 17, and by restoring the top half-posts on them.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Bridges Or Land Bridges (AREA)
- Road Signs Or Road Markings (AREA)
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PT97830691T PT924347E (pt) | 1997-12-22 | 1997-12-22 | Terminal de barreira de seguranca para guardas de seguranca de auto-estradas |
| AT97830691T ATE260373T1 (de) | 1997-12-22 | 1997-12-22 | Sicherheitsendanlage für leitplanken |
| DE1997627815 DE69727815T2 (de) | 1997-12-22 | 1997-12-22 | Sicherheitsendanlage für Leitplanken |
| ES97830691T ES2215219T3 (es) | 1997-12-22 | 1997-12-22 | Barrera de seguridad para pretil de autopista. |
| EP97830691A EP0924347B1 (en) | 1997-12-22 | 1997-12-22 | Safety barrier terminal for motorway guard-rail |
| DK97830691T DK0924347T3 (da) | 1997-12-22 | 1997-12-22 | Sikkerhedsbarriere-endestykke til et motorvejsautoværn |
| BR9807715-5A BR9807715A (pt) | 1997-12-22 | 1998-12-18 | Terminal de barreira de segurança para trilho segurança para auto-estrada |
| KR1019997007633A KR20000075573A (ko) | 1997-12-22 | 1998-12-18 | 고속도로 난간을 위한 안전 장벽 터미널 |
| PCT/EP1998/008325 WO1999032728A1 (en) | 1997-12-22 | 1998-12-18 | Safety barrier terminal for motorway guard-rail |
| CN98802701A CN1248307A (zh) | 1997-12-22 | 1998-12-18 | 高速公路护拦用的安全挡板末端 |
| CA002280017A CA2280017A1 (en) | 1997-12-22 | 1998-12-18 | Safety barrier terminal for motorway guard-rail |
| JP53332699A JP2001513160A (ja) | 1997-12-22 | 1998-12-18 | 自動車道路のガードレール用安全バリヤー末端部 |
| EP98965283A EP0968333A1 (en) | 1997-12-22 | 1998-12-18 | Safety barrier terminal for motorway guard-rail |
| AU20545/99A AU2054599A (en) | 1997-12-22 | 1998-12-18 | Safety barrier terminal for motorway guard-rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97830691A EP0924347B1 (en) | 1997-12-22 | 1997-12-22 | Safety barrier terminal for motorway guard-rail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0924347A1 EP0924347A1 (en) | 1999-06-23 |
| EP0924347B1 true EP0924347B1 (en) | 2004-02-25 |
Family
ID=8230907
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97830691A Expired - Lifetime EP0924347B1 (en) | 1997-12-22 | 1997-12-22 | Safety barrier terminal for motorway guard-rail |
| EP98965283A Withdrawn EP0968333A1 (en) | 1997-12-22 | 1998-12-18 | Safety barrier terminal for motorway guard-rail |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98965283A Withdrawn EP0968333A1 (en) | 1997-12-22 | 1998-12-18 | Safety barrier terminal for motorway guard-rail |
Country Status (13)
| Country | Link |
|---|---|
| EP (2) | EP0924347B1 (da) |
| JP (1) | JP2001513160A (da) |
| KR (1) | KR20000075573A (da) |
| CN (1) | CN1248307A (da) |
| AT (1) | ATE260373T1 (da) |
| AU (1) | AU2054599A (da) |
| BR (1) | BR9807715A (da) |
| CA (1) | CA2280017A1 (da) |
| DE (1) | DE69727815T2 (da) |
| DK (1) | DK0924347T3 (da) |
| ES (1) | ES2215219T3 (da) |
| PT (1) | PT924347E (da) |
| WO (1) | WO1999032728A1 (da) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7556242B2 (en) | 2002-01-30 | 2009-07-07 | The Texas A&M University Systems | Cable guardrail release system |
| WO2010114693A1 (en) | 2009-03-31 | 2010-10-07 | Energy Absorption Systems, Inc. | Guardrail assembly, breakaway support post for a guardrail and methods for the assembly and use thereof |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10116701A1 (de) * | 2000-09-12 | 2002-03-28 | Outimex Bautechnik Gmbh | Leitelement für Schutzeinrichtungen |
| US8517349B1 (en) | 2000-10-05 | 2013-08-27 | The Texas A&M University System | Guardrail terminals |
| CA2454352C (en) | 2001-07-19 | 2009-02-24 | Texas A & M University System | Cable release anchor |
| US6902150B2 (en) | 2001-11-30 | 2005-06-07 | The Texas A&M University System | Steel yielding guardrail support post |
| US6948703B2 (en) | 2002-01-30 | 2005-09-27 | The Texas A&M University System | Locking hook bolt and method for using same |
| ES2679122T3 (es) | 2003-09-22 | 2018-08-22 | Valmont Highway Technology Limited | Guardarraíl |
| KR101266957B1 (ko) | 2004-09-15 | 2013-05-30 | 에너지 어브소션 시스템즈 인코포레이티드 | 충돌 쿠션 |
| CN1868838B (zh) * | 2005-05-27 | 2010-09-29 | 中华映管股份有限公司 | 搬运装置 |
| NZ546970A (en) | 2006-05-04 | 2009-01-31 | Armorflex Ltd | Improvements in and relating to cable-barriers |
| US8596617B2 (en) | 2006-11-06 | 2013-12-03 | Axip Limited | Impact energy dissipation system |
| NZ555598A (en) | 2007-06-01 | 2010-02-26 | Armorflex Ltd | Improved Barrier Section Connection System |
| NZ556782A (en) | 2007-07-27 | 2010-03-26 | Armorflex Ltd | Method of producing a frangible post |
| CN102084065B (zh) * | 2008-05-05 | 2013-08-28 | 得克萨斯A&M大学系统 | 用于耗散能量以使撞击车辆减速的护栏安全系统 |
| US8424849B2 (en) | 2008-06-04 | 2013-04-23 | Axip Limited | Guardrail |
| KR100970934B1 (ko) * | 2009-12-04 | 2010-07-20 | 도아기업 주식회사 | 차량 방호 울타리 |
| WO2012010310A2 (en) | 2010-07-23 | 2012-01-26 | Tata Steel Uk Limited | Post with disconnectable parts for end terminal |
| WO2012106301A1 (en) | 2011-02-01 | 2012-08-09 | Energy Absorption Systems, Inc. | End terminal |
| JP5655053B2 (ja) * | 2012-03-29 | 2015-01-14 | エナジー アブソープション システムス インコーポレイテッド | 端ターミナル及びそれを組み立てて使用する方法 |
| WO2014066350A2 (en) | 2012-10-24 | 2014-05-01 | Energy Absorption Systems, Inc. | Frangible post for highway barrier end terminals |
| KR101471067B1 (ko) * | 2014-07-15 | 2014-12-10 | 동아에스텍 주식회사 | 중앙 분리대 단부처리 구조체 |
| WO2017086806A1 (en) * | 2015-11-18 | 2017-05-26 | Troy Wheeler Contracting Limited | A guardrail |
| CN105625225B (zh) * | 2016-03-15 | 2018-05-22 | 青岛理工大学 | 防刺穿隔离护栏 |
| CN106917370B (zh) * | 2017-03-21 | 2019-05-28 | 安徽卓航展示用品有限公司 | 防撞护栏 |
| AT521770B1 (de) | 2018-07-24 | 2020-05-15 | Kirchdorfer Fertigteilholding Gmbh | Steher für ein fahrzeugrückhaltesystem |
| CN110629705B (zh) * | 2019-08-23 | 2021-07-23 | 浙江恒则熙交通科技有限公司 | 防撞道路护栏 |
| BR112022023819A2 (pt) | 2020-06-05 | 2022-12-20 | Valtir Llc | Amortecedor de choque |
| CN112962496B (zh) * | 2021-02-22 | 2022-10-18 | 杭州卿安电子商务有限公司 | 一种路桥用便于更换的车辆防撞装置 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7725122U1 (da) * | Lehmann, Hans-Joachim, 1000 Berlin | |||
| CH542957A (de) * | 1972-04-06 | 1973-10-15 | Walser & Co | Autofahrbahnbegrenzungseinrichtung |
| GB1375318A (da) * | 1973-03-13 | 1974-11-27 | ||
| GB2023695A (en) * | 1978-04-28 | 1980-01-03 | Transport Secretary Of State F | Crash barriers |
| US4278228A (en) * | 1980-05-12 | 1981-07-14 | Gte Products Corporation | Collapsible support structures |
| US4678166A (en) * | 1986-04-24 | 1987-07-07 | Southwest Research Institute | Eccentric loader guardrail terminal |
| AU583726B2 (en) * | 1986-05-01 | 1989-05-04 | Energy Absorption Systems Inc. | Highway barrier |
| US4928928A (en) * | 1988-01-12 | 1990-05-29 | The Texas A&M University System | Guardrail extruder terminal |
| DE8802588U1 (de) * | 1988-02-27 | 1988-04-14 | Fa. August Grote, 5884 Halver | Bakenständer |
| US4838523A (en) * | 1988-07-25 | 1989-06-13 | Syro Steel Company | Energy absorbing guard rail terminal |
| FR2647824B1 (fr) * | 1989-05-30 | 1992-02-21 | Profilafroid Travaux Publics | Barriere double de securite autoroutiere |
-
1997
- 1997-12-22 DK DK97830691T patent/DK0924347T3/da active
- 1997-12-22 EP EP97830691A patent/EP0924347B1/en not_active Expired - Lifetime
- 1997-12-22 AT AT97830691T patent/ATE260373T1/de active
- 1997-12-22 PT PT97830691T patent/PT924347E/pt unknown
- 1997-12-22 ES ES97830691T patent/ES2215219T3/es not_active Expired - Lifetime
- 1997-12-22 DE DE1997627815 patent/DE69727815T2/de not_active Expired - Lifetime
-
1998
- 1998-12-18 BR BR9807715-5A patent/BR9807715A/pt not_active Application Discontinuation
- 1998-12-18 JP JP53332699A patent/JP2001513160A/ja active Pending
- 1998-12-18 KR KR1019997007633A patent/KR20000075573A/ko not_active Withdrawn
- 1998-12-18 CA CA002280017A patent/CA2280017A1/en not_active Abandoned
- 1998-12-18 EP EP98965283A patent/EP0968333A1/en not_active Withdrawn
- 1998-12-18 CN CN98802701A patent/CN1248307A/zh active Pending
- 1998-12-18 WO PCT/EP1998/008325 patent/WO1999032728A1/en not_active Ceased
- 1998-12-18 AU AU20545/99A patent/AU2054599A/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7556242B2 (en) | 2002-01-30 | 2009-07-07 | The Texas A&M University Systems | Cable guardrail release system |
| WO2010114693A1 (en) | 2009-03-31 | 2010-10-07 | Energy Absorption Systems, Inc. | Guardrail assembly, breakaway support post for a guardrail and methods for the assembly and use thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0924347A1 (en) | 1999-06-23 |
| PT924347E (pt) | 2004-07-30 |
| DE69727815D1 (de) | 2004-04-01 |
| AU2054599A (en) | 1999-07-12 |
| CA2280017A1 (en) | 1999-07-01 |
| ATE260373T1 (de) | 2004-03-15 |
| KR20000075573A (ko) | 2000-12-15 |
| BR9807715A (pt) | 2000-02-15 |
| EP0968333A1 (en) | 2000-01-05 |
| WO1999032728A1 (en) | 1999-07-01 |
| DE69727815T2 (de) | 2005-01-13 |
| DK0924347T3 (da) | 2004-07-26 |
| JP2001513160A (ja) | 2001-08-28 |
| ES2215219T3 (es) | 2004-10-01 |
| CN1248307A (zh) | 2000-03-22 |
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Legal Events
| Date | Code | Title | Description |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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