EP0518304A1 - Guard-rail with sound absorbing properties - Google Patents

Guard-rail with sound absorbing properties Download PDF

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Publication number
EP0518304A1
EP0518304A1 EP92109795A EP92109795A EP0518304A1 EP 0518304 A1 EP0518304 A1 EP 0518304A1 EP 92109795 A EP92109795 A EP 92109795A EP 92109795 A EP92109795 A EP 92109795A EP 0518304 A1 EP0518304 A1 EP 0518304A1
Authority
EP
European Patent Office
Prior art keywords
container
road
safety barrier
sound
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP92109795A
Other languages
German (de)
French (fr)
Inventor
Giovanni Battista Brero
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fimit Ipse Srl
Original Assignee
Fimit Ipse Srl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fimit Ipse Srl filed Critical Fimit Ipse Srl
Publication of EP0518304A1 publication Critical patent/EP0518304A1/en
Withdrawn legal-status Critical Current

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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
    • E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
    • E01F15/081—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material
    • E01F15/083—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material using concrete
    • 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
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
    • E01F8/0076—Cellular, e.g. as wall facing
    • E01F8/0082—Cellular, e.g. as wall facing with damping material
    • 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
    • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
    • E01F9/576—Traffic lines
    • E01F9/588—Lane delineators for physically separating traffic lanes and discouraging but not preventing crossing

Definitions

  • the present invention relates to road-safety barriers including a body of concrete, cement or similar material, which can be placed at the edges of the roadway or in the central region separating lanes of traffic travelling in opposite directions, to prevent motor vehicles from leaving the carriageway in the event of a skid.
  • the object of the present invention is to provide a barrier of the type indicated above which, as well as having the usual properties of mechanical strength and impact absorption, can also reduce noise due to the passage of motor vehicles.
  • a road-safety barrier including a body of concrete, cement or similar material, characterised in that the body is associated with at least one container having at least one cavity which communicates with the exterior through at least one duct and is at least partially filled with material having sound-absorbent properties.
  • the container thus acts as a Helmholtz resonator, absorbing sound vibrations within a certain range of wavelengths which can be calculated, by formulae known to an expert in the art, from, amongst other things, the dimensions of the cavity and of the duct for communication with the exterior and from the properties of the sound-absorbent material.
  • a road-safety barrier has a body 2 of concrete, cement or similar material having an upper portion 4 with two supports 6 extending from its lower end.
  • a substantially parallelepipedal container 8 having sound-absorbent properties is set within the body 2.
  • the container 8 has an outer wall 10 defining a cavity 12 which communicates with the exterior through a pair of holes 14.
  • a sleeve 16 located in each hole 14 has a first portion 16a, which projects into a respective duct 17 in the body 2 for communication with the exterior, and a second portion 16b which projects into the cavity 12 of the container 8.
  • the second portion 16b has a plurality of holes 18 in its surface, contains a cylindrical element 20 of sound-absorbent material, and is surrounded by a tubular element 22, also of sound-absorbent material.
  • the sound-absorbent material used may, for example, be glass wool.
  • the cavity 12 thus communicates with the exterior and can act as a Helmholtz resonator and cancel out sound vibrations within a predetermined range of wavelengths.
  • the container 8 also contains stiffening material 24 to provide it with adequate mechanical strength since it may be subject to considerable stresses during the production of the road safety barrier. For this purpose, in fact, a casting of concrete or the like is made in a form in which the container 8 has already been positioned. Since the safety barrier is of a considerable height, the container 8 is subjected to considerable hydraulic pressure by the fluid mass of setting concrete.
  • FIG. 2 shows a further embodiment of the invention, in which the same reference numerals correspond to parts the same as or equivalent to those described above.
  • an outer surface of the concrete body 2 has three recesses 26 in which respective sound-absorbent containers 8 are inserted.
  • the cavity 12 of each container 8 communicates with the exterior through a respective sleeve 16 and duct 17 similar to those described with reference to the previous embodiment.
  • the recesses 26 are closed by a wall element 28 which holds the containers 8 within the body 2.
  • the wall element 28 also has a transparent portion 30 in correspondence with a cavity 32 in the body 2.
  • the dimensions and positions of the containers 8 are such that each absorbs a specific range of sound vibrations.
  • the lower container is intended to absorb low frequencies, the central container intermediate frequencies and the upper container high frequencies.
  • Figure 3 shows a further embodiment of the invention, in which the same reference numerals correspond to parts the same as or equivalent to those described above.
  • the container 8 is applied to the outside of the body 2 by fixing elements 30, and its cavity 12, which is also filled with sound-absorbent material 22 and reinforcing material 24, communicates with the exterior by means of a pair of ducts 17 which extend through the body 2.
  • a cavity 34 in the body 2 enables a bolt or the like to be inserted to fix the safety barrier to the ground.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Road Paving Structures (AREA)

Abstract

The road-safety barrier includes a body (2) of concrete, cement or similar material associated with at least one container (8) having at least one cavity (12) which communicates with the exterior through at least one duct (17), and is at least partially filled with material (20, 22) having sound-absorbent properties. The container can also act as a Helmholtz resonator.

Description

  • The present invention relates to road-safety barriers including a body of concrete, cement or similar material, which can be placed at the edges of the roadway or in the central region separating lanes of traffic travelling in opposite directions, to prevent motor vehicles from leaving the carriageway in the event of a skid.
  • The object of the present invention is to provide a barrier of the type indicated above which, as well as having the usual properties of mechanical strength and impact absorption, can also reduce noise due to the passage of motor vehicles.
  • This object is achieved by a road-safety barrier including a body of concrete, cement or similar material, characterised in that the body is associated with at least one container having at least one cavity which communicates with the exterior through at least one duct and is at least partially filled with material having sound-absorbent properties.
  • The container thus acts as a Helmholtz resonator, absorbing sound vibrations within a certain range of wavelengths which can be calculated, by formulae known to an expert in the art, from, amongst other things, the dimensions of the cavity and of the duct for communication with the exterior and from the properties of the sound-absorbent material.
  • Advantages and characteristics of the present invention will become clear from the detailed description which follows with reference to the appended drawings, provided by way of non-limiting example, in which:
    • Figure 1 is a sectional view of a road-safety barrier according to the invention, and
    • Figures 2 and 3 show alternative embodiments of road-safety barriers according to the invention.
  • With reference to Figure 1, a road-safety barrier has a body 2 of concrete, cement or similar material having an upper portion 4 with two supports 6 extending from its lower end. A substantially parallelepipedal container 8 having sound-absorbent properties is set within the body 2. The container 8 has an outer wall 10 defining a cavity 12 which communicates with the exterior through a pair of holes 14. A sleeve 16 located in each hole 14 has a first portion 16a, which projects into a respective duct 17 in the body 2 for communication with the exterior, and a second portion 16b which projects into the cavity 12 of the container 8. The second portion 16b has a plurality of holes 18 in its surface, contains a cylindrical element 20 of sound-absorbent material, and is surrounded by a tubular element 22, also of sound-absorbent material. The sound-absorbent material used may, for example, be glass wool.
  • The cavity 12 thus communicates with the exterior and can act as a Helmholtz resonator and cancel out sound vibrations within a predetermined range of wavelengths.
  • The container 8 also contains stiffening material 24 to provide it with adequate mechanical strength since it may be subject to considerable stresses during the production of the road safety barrier. For this purpose, in fact, a casting of concrete or the like is made in a form in which the container 8 has already been positioned. Since the safety barrier is of a considerable height, the container 8 is subjected to considerable hydraulic pressure by the fluid mass of setting concrete.
  • Figure 2 shows a further embodiment of the invention, in which the same reference numerals correspond to parts the same as or equivalent to those described above. In this embodiment, an outer surface of the concrete body 2 has three recesses 26 in which respective sound-absorbent containers 8 are inserted. The cavity 12 of each container 8 communicates with the exterior through a respective sleeve 16 and duct 17 similar to those described with reference to the previous embodiment. The recesses 26 are closed by a wall element 28 which holds the containers 8 within the body 2. The wall element 28 also has a transparent portion 30 in correspondence with a cavity 32 in the body 2.
  • The dimensions and positions of the containers 8 are such that each absorbs a specific range of sound vibrations. In particular, the lower container is intended to absorb low frequencies, the central container intermediate frequencies and the upper container high frequencies.
  • Figure 3 shows a further embodiment of the invention, in which the same reference numerals correspond to parts the same as or equivalent to those described above. In this embodiment, the container 8 is applied to the outside of the body 2 by fixing elements 30, and its cavity 12, which is also filled with sound-absorbent material 22 and reinforcing material 24, communicates with the exterior by means of a pair of ducts 17 which extend through the body 2. A cavity 34 in the body 2 enables a bolt or the like to be inserted to fix the safety barrier to the ground.

Claims (6)

  1. A road-safety barrier including a body (2) of concrete, cement or similar material, characterised in that the body (2) is associated with at least one container (8) having at least one cavity (12) which communicates with the exterior through at least one duct (17) and is at least partially filled with material (20, 22) having sound-absorbent properties.
  2. A road-safety barrier according to Claim 1, characterised in that the container (8) has at least one hole (14) containing a sleeve (16) having a first portion (16a) which projects into the duct (17) for communication with the exterior and a second portion (16b), which projects into the cavity (12) in the container (8), has a plurality of holes (18) in its surface, contains a cylindrical element (20) of sound-absorbent material, and is surrounded by a tubular element (22) of sound-absorbent material.
  3. A road-safety barrier according to Claim 1 or Claim 2, characterised in that the container (8) is set within the body (2) of the barrier.
  4. A road-safety barrier according to Claim 1 or Claim 2, characterised in that it includes three containers (8) located in respective recesses (26) in an outer surface of the body (2), the recesses (26) being closed by a wall element (28) which holds the containers (8) within the body (2).
  5. A road-safety barrier according to Claim 1, characterised in that the container (8) is applied to an outer surface of the body (2) of the barrier by means of fixing elements (30) and the cavity (12) communicates with at least one duct (17) which is formed in the body and opens to the exterior.
  6. A road-safety barrier according to any one of the preceding claims, characterised in that the container (8) contains a material (24) suitable for providing the container with characteristics of structural strength.
EP92109795A 1991-06-12 1992-06-11 Guard-rail with sound absorbing properties Withdrawn EP0518304A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO910138U IT223209Z2 (en) 1991-06-12 1991-06-12 ROAD SAFETY LIGHT CURTAIN WITH SOUND ABSORBING PROPERTIES.
ITTO910138U 1991-06-12

Publications (1)

Publication Number Publication Date
EP0518304A1 true EP0518304A1 (en) 1992-12-16

Family

ID=11408994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92109795A Withdrawn EP0518304A1 (en) 1991-06-12 1992-06-11 Guard-rail with sound absorbing properties

Country Status (2)

Country Link
EP (1) EP0518304A1 (en)
IT (1) IT223209Z2 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2704880A1 (en) * 1993-05-07 1994-11-10 Colas Sa Multipurpose road protection device
WO1995021964A1 (en) * 1994-02-11 1995-08-17 Autostrade - Concessioni E Costruzioni Autostrade S.P.A. Deadening road pavement and method for its realization
FR2759716A1 (en) * 1997-02-20 1998-08-21 Colas Sa Barrier for roads and motorways
WO2001006063A1 (en) * 1999-07-21 2001-01-25 Autostrade Concessioni E Costruzioni A multipurpose road barrier, having a double dampening-resistant effect
EP0969149A3 (en) * 1998-07-03 2002-07-17 Sistema Barriere Stradali S.r.l. Safety barrier for road embankments
NL1018376C2 (en) * 2001-06-25 2003-01-07 Sideron Internat B V System for screening roads, paths, machines and industry is provided with two-sided sound-absorbing barrier and two-sided, sound-absorbing and translucent top system
WO2013030418A1 (en) * 2011-09-02 2013-03-07 Ramon Corujo Pardo Cover for barrier elements
CN108867471A (en) * 2018-08-14 2018-11-23 蒋昌霞 A kind of anti-collision guard rail for highways
IT201800010489A1 (en) * 2018-11-21 2020-05-21 Tincar Sas Road safety barrier
WO2021242891A1 (en) * 2020-05-27 2021-12-02 Mute Wall Systems, Inc. Sound dampening barrier wall

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014172A1 (en) * 1979-01-23 1980-08-06 Arbed S.A. Protective wall for road-vehicle guidance and for shielding residents from traffic noise

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014172A1 (en) * 1979-01-23 1980-08-06 Arbed S.A. Protective wall for road-vehicle guidance and for shielding residents from traffic noise

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1007984A5 (en) * 1993-05-07 1995-12-05 Colas Sa Protection device road versatile.
FR2704880A1 (en) * 1993-05-07 1994-11-10 Colas Sa Multipurpose road protection device
WO1995021964A1 (en) * 1994-02-11 1995-08-17 Autostrade - Concessioni E Costruzioni Autostrade S.P.A. Deadening road pavement and method for its realization
FR2759716A1 (en) * 1997-02-20 1998-08-21 Colas Sa Barrier for roads and motorways
EP0969149A3 (en) * 1998-07-03 2002-07-17 Sistema Barriere Stradali S.r.l. Safety barrier for road embankments
US6840706B1 (en) 1999-07-21 2005-01-11 Autostrade Concessioni E Costruzioni Autostrade S.P.A. Multipurpose road barrier, having a double dampening-resistant effect
EP1375752A1 (en) * 1999-07-21 2004-01-02 AUTOSTRADE S.p.A. A multipurpose road barrier, having a double dampening-restistant effect
WO2001006063A1 (en) * 1999-07-21 2001-01-25 Autostrade Concessioni E Costruzioni A multipurpose road barrier, having a double dampening-resistant effect
NL1018376C2 (en) * 2001-06-25 2003-01-07 Sideron Internat B V System for screening roads, paths, machines and industry is provided with two-sided sound-absorbing barrier and two-sided, sound-absorbing and translucent top system
WO2013030418A1 (en) * 2011-09-02 2013-03-07 Ramon Corujo Pardo Cover for barrier elements
ES2400149A1 (en) * 2011-09-02 2013-04-05 Ramón CORUJO PARDO Cover for barrier elements
CN108867471A (en) * 2018-08-14 2018-11-23 蒋昌霞 A kind of anti-collision guard rail for highways
CN108867471B (en) * 2018-08-14 2020-10-02 安徽省华腾农业科技有限公司经开区分公司 Highway crash barrier
IT201800010489A1 (en) * 2018-11-21 2020-05-21 Tincar Sas Road safety barrier
WO2020104993A1 (en) * 2018-11-21 2020-05-28 Tincar S.A.S Safety road barrier
WO2021242891A1 (en) * 2020-05-27 2021-12-02 Mute Wall Systems, Inc. Sound dampening barrier wall
US12006643B2 (en) 2020-05-27 2024-06-11 Mute Wall Systems, Inc. Sound dampening barrier wall

Also Published As

Publication number Publication date
IT223209Z2 (en) 1995-06-13
ITTO910138V0 (en) 1991-06-12
ITTO910138U1 (en) 1992-12-13

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