EP0652326A1 - Pfosten für Steinschlagschutzsystem, mit einzigem Anker - Google Patents
Pfosten für Steinschlagschutzsystem, mit einzigem Anker Download PDFInfo
- Publication number
- EP0652326A1 EP0652326A1 EP94402534A EP94402534A EP0652326A1 EP 0652326 A1 EP0652326 A1 EP 0652326A1 EP 94402534 A EP94402534 A EP 94402534A EP 94402534 A EP94402534 A EP 94402534A EP 0652326 A1 EP0652326 A1 EP 0652326A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base
- ground
- rod
- post
- barrel
- 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.)
- Granted
Links
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
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
- E01F7/045—Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps
-
- 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
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
- E01F9/627—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection self-righting after deflection or displacement
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
-
- 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
- E02D5/80—Ground anchors
-
- 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
- E02D5/80—Ground anchors
- E02D5/801—Ground anchors driven by screwing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/22—Sockets or holders for poles or posts
- E04H12/2207—Sockets or holders for poles or posts not used
- E04H12/2215—Sockets or holders for poles or posts not used driven into the ground
- E04H12/223—Sockets or holders for poles or posts not used driven into the ground with movable anchoring elements; with separately driven anchor rods
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/22—Sockets or holders for poles or posts
- E04H12/2253—Mounting poles or posts to the holder
- E04H12/2261—Mounting poles or posts to the holder on a flat base
Definitions
- the invention relates to a post for supporting a protective barrier, such as a barrier for stopping downward blocks, comprising a barrel bearing at the bottom on the ground and maintained erected by attachment means connected to points of anchor grounded.
- protective barriers are generally available, extended approximately along level lines so as to be generally perpendicular to the foreseeable trajectories of the blocks. These barriers are for example made up of heavy layers of nets, typically downgraded anti-submarine nets. The weight and the internal friction of the mesh ensure braking of the blocks with reduced rebound, and absorb the forces on the support posts.
- These posts are generally kept erected by guy lines and tie rods fixed to anchors in the ground.
- the guy line requires three anchors, two for guy lines and one for a foot anchor.
- the number of anchors per post is reduced to two, the anchors being used jointly by the shrouds and tie rods of two adjacent posts.
- anchors are made in unstable terrain, adjacent to landslides, and difficult to access (due to the slope). To have the necessary resistance, they must, if they cannot be melted in healthy rock, be sufficiently heavy and extended to reduce the efforts at the interface with the ground. These anchors are therefore expensive, and represent a non-negligible part of the cost of the structure.
- shrouds and tie rods stress the anchors with a significant tangential component. If the surface rock is loose or brittle, the shocks resulting from the impact of blocks in the barrier eventually give lateral play to the anchor; the distribution of forces on the various anchor points is modified, which can lead to early deterioration of the structure.
- a protective barrier support post such as a barrier for stopping downward blocks, comprising a barrel bearing at the foot on the ground and kept erected by means of attachment connected to anchoring points grounded in the ground, characterized in that the barrel is fixed at the foot to a base which bears on the ground at least by its periphery, the attachment means consisting of a single rod sinking substantially perpendicularly into the ground until a buried seal forming an anchor point and crossing a central area of the base to urge the latter to bear on the ground by means of elastic means prestressed in the direction of the rod.
- the number of anchor points reaches its minimum. But in addition, any effort to overturn the post results in a tensile force on the rod substantially perpendicular to the ground.
- the interposition of the prestressed elastic means clips the traction pulse, and consequently reduces the amplitude of the shock on the anchor, during an impact on the barrier.
- this settlement is compensated by the prestressing.
- the concrete in the cavity of an exploded pile took a clearance in this cavity, this clearance would be taken up by the prestressed elastic means.
- the periphery of the base fits into a convex surface inside which is located the central zone crossed by the attachment rod.
- the convex surface inside which the base fits represents the support polygon of this base, and that a tilting of the post and the base can only occur along a tangent to this surface.
- an overturning torque applied to the post is transferred to a radius going from the point where the attachment rod crosses the base to a tangent to the convex surface, and finds its antagonist in the couple having as aforesaid radius, and as end force the axial force on the attachment rod which will be lower the longer the arm. It is understood that if the rod passed through the base outside the convex surface, the resistance to overturning would be zero in certain directions.
- the base can be circular, or consist of at least three radial arms.
- the barrel and the base must be rigidly linked.
- a post 1 as a whole is anchored on the ground 2, to support a barrier (not shown) stretched appreciably along a level line to stop blocks of rocks or stones rolling downstream, and protect the downstream regions.
- a barrier (not shown) stretched appreciably along a level line to stop blocks of rocks or stones rolling downstream, and protect the downstream regions.
- the ground 2 is shown here horizontal for reasons of graphic convenience, but that it is normally on a more or less steep slope.
- the anchoring, unique and executed at the location of post 1, was executed by the technique known as exploded pile; was carried out in the soil 2, a cylindrical drilling 3 substantially perpendicular to the surface of the soil 2 deep enough to reach very consistent rock.
- a well-dosed explosive cartridge was introduced into borehole 3, which was detonated at the bottom, so as to obtain a chamber 4, roughly spherical.
- a fastening rod 5, of high strength steel the end of which is suitably shaped to a seal, and the borehole 3 and the chamber 4 are filled with concrete.
- the attachment rod 5 is threaded at least at its end 5 has emerging from the ground, for receiving a locking nut 14.
- the post 1 comprises a barrel 10, here tubular, fixed at its foot end 10 a to a base 11, here circular, and which carries by its periphery 11 a on the ground 2.
- the attachment rod 5 passes through the base 11 in its central region 11b , through a hole 12, in the axis of the barrel 10.
- a helical spring 13 is threaded on the rod 5 to bear on the central region 11b of the base 11, and a nut 14 is engaged on the rod 5 by the end 5 a , and screwed until putting the spring 13 in compression, and the rod 5 in tension, so that the periphery 11 a of the base 11 is biased in abutment on the ground 2.
- the barrel 10 is held perpendicular to the base 11 by four gussets 15 which start radially from the base region 10 a of the barrel 10, where they are welded, to extend to the periphery 11 a of the base to which they are welded.
- any force which will be applied to the post 1 with a transverse component, and in particular the forces transmitted to the head zone 10b of the barrel 10 by the barrier during the impact of blocks of stone cause a reversal torque of the post 1, which will resist a resistant couple with an arm constituted by a radius of the base 11 between its periphery 11 a and its central zone 11 b , the forces applied to the arm being constituted for the central region 11 b , of the compression force of the spring 13, and for the periphery 11 a , of the reaction of the soil 2.
- the post will remain stationary, except possibly a slightly greater penetration of the periphery 11 a in the sol 2 in the region stressed by the overturning torque, and a resulting reduction in prestressing. If the overturning torque is higher, there will be momentary lifting of the swivel base around a tangent at its periphery in a direction perpendicular to the overturning force applied at the top 10 b of the barrel, the central area of the base requesting in compression beyond the prestressing value the spring 13. Then the relaxation of the spring 13 will again apply the base to the ground.
- the stress of the rod 5 will be axial, and the anchoring stresses will be transferred to the upper wall of the chamber 4, in relatively consistent rock, without lateral reaction on the drilling walls 3, in less consistent ground. Even if the mass of concrete filling the chamber 4 would take, after violent shocks in the barrier, a little play compared to the walls of this chamber 4, this mass would remain in abutment against the upper wall of the chamber 4 due to prestressing. It is understood that the maintenance of the barrier includes a monitoring of the prestressing with a possible adjustment.
- the post 1 'shown in Figure 2 departs from the structure of the previous post essentially in that the barrel 20 is inclined relative to the perpendicular to the base 21, so that the head region 20 b of the barrel can be, despite the slope of the floor 2, and without preparing a support base, overhanging relative to the root region 20 to the side of the upstream and enable the suspension of a loose mesh barrier vertically forward of the post 1 'relative to the direction of arrival of the downward blocks.
- the barrel 20 and the base 21 are secured by appropriate gussets 25.
- the hole 22 for the passage of the attachment rod 5 and the foot 20 a of the barrel 20 are both in the central zone 21 b of the base 21, but offset laterally so that the rod 5 and the spring 13 are outside the barrel 20, and accessible.
- the post 1 '' shown in Figures 3A and 3B has the particularity that the barrel 30 is not originally fixed to the base 31, and that the latter consists of three arms 31 a , 31 b and 31 c radiating from a hub 31 d in the form of a socket in which the foot 30 can engage has a barrel 30, and arranged at 120 ° from each other.
- the convex surface which is inscribed on the periphery of the base, and whose tangents define the pivot axes in inversion of the base is an equilateral triangle.
- the resistance to overturning is therefore different depending on the force directions of overturning. It will be advantageous to take this into account when installing the barrier, either to limit the forces on the barrel, or to promote the resistance of the barrier at determined locations, for example intermediate between two posts.
- the post 1 '''shown in Figure 4 is similar in structure to the post 1 shown in Figure 1A.
- the base 11 does not rest directly by its periphery 11 a on the ground 2, but bears on a sole 40, similar to the base 11 without barrel or gussets and with a diameter slightly greater than that of the base 11.
- the sole 40 is held in abutment on the ground by a nut 41 screwed onto the rod 5, and in addition by the thrust of the base 11 urged by the spring 13.
- the sole 40 distributes the support forces over the entire surface of the ground which it covers and provides good support for the base for its reactions to overturning.
- the posts according to the invention are of rustic structure, and that they require only a minimum of anchor points. They therefore appear particularly suitable for the execution of economic barriers, in sites where the downward blocks have a limited kinetic energy, either because of their mass, or because of the slope. They will therefore often be associated with relatively light nets, of the wire mesh type in one or two layers, in particular wire mesh with hexagonal meshes and double twist.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Dowels (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Road Signs Or Road Markings (AREA)
- Fencing (AREA)
- Protection Of Plants (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9313429A FR2712334B1 (fr) | 1993-11-10 | 1993-11-10 | Poteau de support pour barrière d'arrêt de blocs dévalants, à ancrage unique. |
FR9313429 | 1993-11-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0652326A1 true EP0652326A1 (de) | 1995-05-10 |
EP0652326B1 EP0652326B1 (de) | 1997-02-05 |
Family
ID=9452732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94402534A Expired - Lifetime EP0652326B1 (de) | 1993-11-10 | 1994-11-09 | Pfosten für Steinschlagschutzsystem, mit einzigem Anker |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0652326B1 (de) |
AT (1) | ATE148754T1 (de) |
DE (1) | DE69401696T2 (de) |
ES (1) | ES2097621T3 (de) |
FR (1) | FR2712334B1 (de) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0794303A1 (de) * | 1996-03-08 | 1997-09-10 | Mecelec Industries | Verfahren und Vorrichtung zur Bodenbefestigung eines Strassenmöbels und Telefonzelle versehen mit solcher Vorrichtung |
EP0884420A1 (de) * | 1997-06-13 | 1998-12-16 | Tecnivalor | Verfahren und Vorrichtung für einen sich Seitwärts- und Rutschkräften entgegenstellenden Gründungskörper |
FR2837509A1 (fr) * | 2002-03-22 | 2003-09-26 | Gtm | Fondations de structures par massifs solidarises au sol par des ancrages actifs |
EP2023111A3 (de) * | 2007-08-03 | 2011-01-05 | Consorzio Triveneto Rocciatori Scarl | Messvorrichtung zur Erfassung von Belastungen an einer Schutzabsperrung und Schutzabsperrung mit einer solchen Messvorrichtung |
ITBO20110244A1 (it) * | 2011-05-03 | 2012-11-04 | Consorzio Triveneto Rocciatori Soc Coop A R L | Barriera di protezione contro impatti, e sostegno per una tale barriera di protezione |
CN105756053A (zh) * | 2016-02-24 | 2016-07-13 | 张日龙 | 一种建筑桩 |
CN110593098A (zh) * | 2019-10-09 | 2019-12-20 | 长江水利委员会长江科学院 | 一种悬索桥钟罩式锚碇结构及其施工方法 |
CN111720051A (zh) * | 2020-06-28 | 2020-09-29 | 浙大城市学院 | 一种复杂倾斜岩石和孤石地质钻孔灌注桩的施工方法 |
CN111979937A (zh) * | 2020-08-31 | 2020-11-24 | 高菲菲 | 一种矿用落石防护警示装置 |
CN112942178A (zh) * | 2021-04-26 | 2021-06-11 | 江苏华木空间结构有限公司 | 一种钢结构防震立柱和钢结构系统 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19901510A1 (de) * | 1999-01-16 | 2000-08-03 | Lothar Stephan | Fundament für oberirdische Türme |
FR2816335B1 (fr) | 2000-11-09 | 2003-08-15 | Mecanroc | Barriere de protection, notamment pour site montagneux |
DE10201585B4 (de) * | 2002-01-17 | 2011-06-16 | Lohrmann Schlosserei Und Konstruktionstechnik Gmbh | Schutzpfosten |
DE202013103524U1 (de) | 2013-08-06 | 2013-08-29 | Isofer Ag | Pfosten für ein Steinschlag-Fangnetz sowie Steinschlag-Fangnetz |
DE202013103523U1 (de) * | 2013-08-06 | 2014-11-07 | Isofer Ag | Pfosten für ein Steinschlag-Fangnetz sowie Steinschlag-Fangnetz |
DE202014102878U1 (de) | 2014-06-24 | 2014-10-27 | Ms-Anlagenbau (Vertreten Durch Die Gesellschafterin: Sonja Meier, 78269 Volkertshausen) | Schutzpfosten |
CN111827915B (zh) * | 2020-09-08 | 2022-05-06 | 大庆市阳鑫石油机械设备制造有限公司 | 一种石油开采井口回压控制装置 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3289369A (en) * | 1964-08-11 | 1966-12-06 | Spring City Foundry Company | Light standard base hold down |
GB1242844A (en) * | 1967-08-17 | 1971-08-11 | Bernard Whitehead | An improvement in or relating to road marker devices or the like |
FR2070329A5 (de) * | 1969-12-01 | 1971-09-10 | Praet Michel Van | |
US3676965A (en) * | 1970-10-15 | 1972-07-18 | Robert F Deike | Pole or post mounting for ground anchor |
FR2177176A5 (de) * | 1972-03-22 | 1973-11-02 | Hurtado Jean | |
FR2622611A1 (fr) * | 1987-10-30 | 1989-05-05 | Mecanroc | Barriere pour blocs et pierres devalants |
US4887691A (en) * | 1988-11-04 | 1989-12-19 | Rotondo/Penn-Cast | Modular wall construction using posts and panels |
DE9310808U1 (de) * | 1993-07-20 | 1993-09-30 | Stewing, Andreas, 46282 Dorsten | Standfuß |
-
1993
- 1993-11-10 FR FR9313429A patent/FR2712334B1/fr not_active Expired - Fee Related
-
1994
- 1994-11-09 AT AT94402534T patent/ATE148754T1/de not_active IP Right Cessation
- 1994-11-09 ES ES94402534T patent/ES2097621T3/es not_active Expired - Lifetime
- 1994-11-09 DE DE69401696T patent/DE69401696T2/de not_active Expired - Fee Related
- 1994-11-09 EP EP94402534A patent/EP0652326B1/de not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3289369A (en) * | 1964-08-11 | 1966-12-06 | Spring City Foundry Company | Light standard base hold down |
GB1242844A (en) * | 1967-08-17 | 1971-08-11 | Bernard Whitehead | An improvement in or relating to road marker devices or the like |
FR2070329A5 (de) * | 1969-12-01 | 1971-09-10 | Praet Michel Van | |
US3676965A (en) * | 1970-10-15 | 1972-07-18 | Robert F Deike | Pole or post mounting for ground anchor |
FR2177176A5 (de) * | 1972-03-22 | 1973-11-02 | Hurtado Jean | |
FR2622611A1 (fr) * | 1987-10-30 | 1989-05-05 | Mecanroc | Barriere pour blocs et pierres devalants |
US4887691A (en) * | 1988-11-04 | 1989-12-19 | Rotondo/Penn-Cast | Modular wall construction using posts and panels |
DE9310808U1 (de) * | 1993-07-20 | 1993-09-30 | Stewing, Andreas, 46282 Dorsten | Standfuß |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0794303A1 (de) * | 1996-03-08 | 1997-09-10 | Mecelec Industries | Verfahren und Vorrichtung zur Bodenbefestigung eines Strassenmöbels und Telefonzelle versehen mit solcher Vorrichtung |
FR2745841A1 (fr) * | 1996-03-08 | 1997-09-12 | Mecelec Ind | Procede et dispositif de fixation au sol d'un element de mobilier urbain et cabine telephonique comprenant un tel dispositif |
EP0884420A1 (de) * | 1997-06-13 | 1998-12-16 | Tecnivalor | Verfahren und Vorrichtung für einen sich Seitwärts- und Rutschkräften entgegenstellenden Gründungskörper |
FR2764618A1 (fr) * | 1997-06-13 | 1998-12-18 | Tecnivalor | Procede et dispositif d'embase dans le sol s'opposant aux efforts lateraux et au glissement |
FR2837509A1 (fr) * | 2002-03-22 | 2003-09-26 | Gtm | Fondations de structures par massifs solidarises au sol par des ancrages actifs |
EP2023111A3 (de) * | 2007-08-03 | 2011-01-05 | Consorzio Triveneto Rocciatori Scarl | Messvorrichtung zur Erfassung von Belastungen an einer Schutzabsperrung und Schutzabsperrung mit einer solchen Messvorrichtung |
ITBO20110244A1 (it) * | 2011-05-03 | 2012-11-04 | Consorzio Triveneto Rocciatori Soc Coop A R L | Barriera di protezione contro impatti, e sostegno per una tale barriera di protezione |
CN105756053A (zh) * | 2016-02-24 | 2016-07-13 | 张日龙 | 一种建筑桩 |
CN110593098A (zh) * | 2019-10-09 | 2019-12-20 | 长江水利委员会长江科学院 | 一种悬索桥钟罩式锚碇结构及其施工方法 |
CN110593098B (zh) * | 2019-10-09 | 2024-04-16 | 长江水利委员会长江科学院 | 一种悬索桥钟罩式锚碇结构及其施工方法 |
CN111720051A (zh) * | 2020-06-28 | 2020-09-29 | 浙大城市学院 | 一种复杂倾斜岩石和孤石地质钻孔灌注桩的施工方法 |
CN111720051B (zh) * | 2020-06-28 | 2021-07-27 | 浙大城市学院 | 一种复杂倾斜岩石和孤石地质钻孔灌注桩的施工方法 |
CN111979937A (zh) * | 2020-08-31 | 2020-11-24 | 高菲菲 | 一种矿用落石防护警示装置 |
CN112942178A (zh) * | 2021-04-26 | 2021-06-11 | 江苏华木空间结构有限公司 | 一种钢结构防震立柱和钢结构系统 |
Also Published As
Publication number | Publication date |
---|---|
ATE148754T1 (de) | 1997-02-15 |
FR2712334B1 (fr) | 1996-02-02 |
FR2712334A1 (fr) | 1995-05-19 |
DE69401696D1 (de) | 1997-03-20 |
ES2097621T3 (es) | 1997-04-01 |
EP0652326B1 (de) | 1997-02-05 |
DE69401696T2 (de) | 1997-07-24 |
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