EP1529883A1 - Sound-damping wall and element therefor - Google Patents

Abstract

The trackside noise generated by a high-speed train is absorbed or deflected by a sound barrier consisting of two interlocking sheet metal profiles packed with a suitable sound-absorbing material. The assembly consists of a front panel (4) and a rear panel (5) which interlock top and bottom.

Description

The invention relates to a noise protection element for the construction noise barriers, with a front wall, a back wall, an upper side wall and a lower side wall Hollow box profile, which consists of several, by means of a profile connection assembled profile sheets together is and in the cavity a substantially of the lower to the upper side wall towering and above the Length of the box girder profile symmetrical to the median plane between Front wall and rear wall extending Schalldämmkörper arranged or can be arranged. The invention further relates a noise barrier consisting of a plurality of corresponding Noise protection elements is formed. The preferred application the noise protection elements according to the invention relates in this case e.g. Noise barriers on high-speed railway lines and Airports.

In road and rail construction, it is known that harmful to health Continuous noise level of roads, highways, train tracks and high-speed train tracks through the use from noise barriers. The noise barriers will be built from individual noise protection elements that are vertically or horizontally can be installed together and thereby, at least when mounting in horizontal position, between towering and fortified in a ground foundation Supports or posts to be anchored with I-profile. To one long life of the noise protection elements to ensure exist the profile sheets of the hollow box profile preferably made Aluminum and in the noise protection elements come Schalldämmkörper sufficient thickness of sound-absorbing materials such as mineral fiber wool in particular. The source of noise protection facing surface of the noise protection elements is common for the sake of better sound refraction with recesses like a hole pattern.

A generic noise protection element, which consists of a total four profiled sheets, two of which are large-format, rollformed aluminum molded sheet with beads are executed and the front wall and the rear wall form, and two others as Extruded profiles are executed, which in the assembled state the upper and the lower side wall form is from DE 296 09 237 U1 known. For easy installation of this from four profile sheets existing noise protection element are the front wall or rear wall with the two side walls each by means a mutual Hakenumgriffs with inclined locking surfaces connected. The generic noise protection element is with comparatively low production and assembly costs manufacturable and has been used in particular on roads and conventional rail lines proven. When using the generic Noise protection element on high-speed drawbars However, it has been shown that the connection of the large Shims with the side walls on the reciprocal Hook grips the high loads caused by high Speed passing trains on the noise barriers be exercised, not withstand.

The object of the invention is to provide a noise protection element and a Noise barrier to create, which also the extreme loads on high-speed railway lines and similar applications, where high dynamic pressure and suction loads occur, withstand and cost can be produced and mounted.

These and other objects are achieved according to the invention, that the hollow box profile of a first and a second shell-shaped profile sheet is composed, wherein the first profile sheet integrally the front wall as well a section of the lower and a section of the upper side wall forms, wherein the second profiled sheet in one piece the back wall and a section of the lower and forms a portion of the upper side wall, and wherein the first and the second profile sheet at the top and at the lower side wall at the level of the median plane, continuous over the length of the hollow box profile, by a form-fitting Profile connection are interconnected. The Inventors of the present application lead the low stability the generic noise protection elements on high dynamic Loads back when passing a High-speed train on the noise barrier and thus on the individual noise protection elements of the noise protection wall exercised become. Due to the construction of the noise protection element according to the invention with essentially only two half-shell-shaped profile sheets, the one-piece to the front or rear wall molded sections form the two side walls, the profile connection between the two shell-shaped Profile sheets on the height or the area of the median plane is concentrated, therefore in an area related on the noise protection element with regard to the dynamic bending and dynamic torsion a neutral fiber or a neutral one Level with the relatively low stresses forms arises an overall more rigid hollow box profile. simultaneously are the actual weak points of the hollow box profile, namely the profile connections, in the range of the lowest Stress arranged.

To even the highest, changing dynamic suction and pressure stresses to meet, both profile sheets exist preferably from extruded profiles, wherein the profile sheets preferably of an aluminum alloy, in particular one high-vibration or high vibration aluminum alloy consist. A special advantage of extruded profiles is that already in the original molding, the joining elements for the profile connection formed both profile sheets or half shells can be. In addition, both can already with the prototypes Profile sheets with adapted according to their stress Provided zones of different profile thickness or profile contour become. The invention provides in particular that both Profile sheets have an identical profile shape.

Due to the high dynamic loads, it can be as advantageous, possibly even prove necessary, the profile connection to secure by means of at least one locking means, even for extreme dynamic loads longitudinal displacements or other shifts between the two Safely prevent metal sheets. To the loads that on the Locking means acting to keep low, is the locking means preferably at the level of the median plane, therefore again in the area of the neutral fiber or neutral plane arranged the noise protection element. The locking agent can include plug-in means. In a preferred embodiment form However, screwing as fastening screws the additional Locking device for the profile connection.

According to a first embodiment, both Pofilbleche Half shells form and for joining the positive Profile connection of both profile sheets can two profile sheets integrally a first joining element and a receive second joining element, the form-fitting with each other can be locked. In this embodiment, the Profile sheets thus half shells with integrally molded and the profile connection forming joining elements. For one regard the loads favorable fixation of the profile sheets to each other it is advantageous if in the first invention Design with integrated joining elements each Profile sheet or each half-shell for the profile connection as first joining element a hollow chamber groove with undercut on a Part section and a second joining element a form-fitting in the hollow chamber groove anchored profile section has on the other subsection. Through the hollow chamber groove with Undercut is a fixation of the two profile sheets in Transverse direction and in vertical direction in the area of neutral Reached the middle plane. In this embodiment, preferably the plug or screw means in alignment, the joining elements, in particular the hollow chamber groove or their Wall and the profile section at least partially cross Intervene holes or tapped holes. Conveniently, can then with the locking means at the same time End cover on each of the two end faces of the noise protection element be attached. This will be the cavity the box profile against dirt and moisture supported by the front and it can be an additional Stiffening of the noise protection element can be achieved. Of the Profile section and the hollow chamber groove in particular be formed rectangular. The profile section can in particular have a block profile and the hollow chamber groove or their Wall can have a square profile, with which the block profile is almost completely enclosed on four sides, so that the profile connection both profile sheets over a large area with each other combines. Appropriately, forms the first joining element or the profile section the end of the one section each Profile sheet and the second joining element or the hollow chamber groove or its wall the end of the other section, wherein advantageously the block section and the hollow chamber groove starting from an intermediate leg of each Part section extends upwards and downwards. Further advantageous in the first embodiment according to the invention it, when attached to the side edges of the front and back wall respectively a right angle to these extending support legs as part of the side walls that connects one inside angled offset leg merges into an intermediate leg, at the end of the profile section or the hollow chamber groove or whose wall is formed. This is at one above the other arranged noise protection elements a space formed between two noise protection elements, in which a additional sealing element can be arranged to order as well a passage of noise between the noise protection elements to prevent.

According to a second embodiment of the invention comprises the Profile connection on both side walls one arranged in the cavity Connecting profile body provided with a groove is in the assembled state of the profile sheets adjacent to Side wall is located and this is facing and at the subsections the side walls are fixed positively and secured by the locking means. At this second embodiment of the invention is the profile connection thus executed in several parts and comprises a connecting profile body, on which the profile sheets are fixed positively and by means of the preferably designed as screws Locking means are secured.

In the second embodiment of the invention is particularly advantageous if the connecting profile body made of extruded Extruded profile bodies, preferably made of aluminum, consist, so that these also comparatively inexpensive to produce and can withstand the high loads. Further preferably the connection profile body has a central, arranged on the median plane and forming the bottom of the groove Middle web, in which the locking means anchored or anchored. The middle bar preferably has one Full profile cross-section, so that well-sized screws can be screwed as locking in the center bar. A particularly advantageous rigidity of the invention Noise protection element according to the second embodiment can be reach when the connection profile body on both sides of the central bar each one in the assembled state to the Front wall and to the rear wall zoom reaching hollow chamber section having. Then extend both the upper Side wall as well as the lower side wall associated Connecting profile body over the entire length of the noise protection element, becomes an additional stiffening of the two large area Front and rear walls to each other in the corners of the Noise protection elements achieved.

For the multi-part profile connection is particularly advantageous if the sections of the side walls at their ends preferably have right-angled angled edge webs, which border in the groove. The edging strips in the groove cause the positive connection of the profile connection between the profile sheets and the connection profile body and so that between the profile sheets themselves. Particularly favorable is when to the side edges of the front and back wall a right angle to these extending support legs connects, which has an inwardly angled offset leg in an intermediate leg, at the ends the angled edges are formed. By the over the Offset legs achieved offset of the intermediate leg arises on both side walls a cavity in which the heads the screws forming the locking means and possibly Also sealing elements can be arranged without the stable Overlay of two superposed noise protection elements is thereby impaired.

As an additional security measure for the positive and additionally clamped locking of the two profile sheets on Connecting profile bodies can at least some of the locking means Be assigned to clamping sleeves, which are the edge webs widen and jam against the groove side flanks. Because of the under certain circumstances, extremely high dynamic loads this can be the groove with countersinks or widening be provided, in which the clamping sleeves and the bent with these Intervene sections of the edge webs form fit. This measure immediately ensures that the two profile sheets also in the longitudinal direction of the noise protection elements form fit are fixed, since the clamping sleeves the angled edges in Range of subsidence or widening in addition to the Bend the front or rear wall and the connection profile body anchor.

Further preferably, the connection profile body at their the grooves facing away from the bottom sides integral with supporting webs for the positioning and lateral support of the sound insulation body be provided. The central web of the connecting profile body can be adjacent to its bottom with a keyhole-like profile recess or the like. be provided. At the keyhole-like profile recess can then be End cover on both ends of the noise protection element attach to the cavity of the box profile opposite Protecting dirt or moisture, and also the connection of the front cover in turn in the area of neutral fiber is arranged. Further preferably, with The locking means strips attached to the side walls be provided with receptacles for sealing elements to also to achieve a seal between the noise protection elements. With the strips can at the same time the additional Klemmarretierung exercised over the entire length of the side walls become.

In particular, the invention also relates to a noise barrier with noise protection elements, which are designed as described above are. It is particularly advantageous if in the noise barrier the noise protection elements on the front with posts I-profile are defined, being between the noise barriers and the post a rubber bearing or sealing element for Vibration damping is arranged. The lowest noise protection elements can also be supported on a concrete base, with between the lower side wall of the noise protection element and the Concrete base at least one preferably anchored in the bar Seal element is arranged

Fig. 1

perspektivisch und stark vereinfacht eine Ansicht einer Lärmschutzwand mit horizontaler Verbauung einzelner Lärmschutzelemente;

Fig. 2

einen Vertikalschnitt durch ein erfindungsgemäßes Lärmschutzelement gemäß einem ersten Ausführungsbeispiel;

Fig. 3

eine Schnittansicht entlang III-III in Fig. 1;

Fig. 4

einen Vertikalschnitt durch ein erfindungsgemäßes Lärmschutzelement gemäß einem zweiten Ausführungsbeispiel;

Fig. 5

schematisch stark vereinfacht eine Draufsicht auf die Nut in den Seitenwänden beim zweiten Ausführungsbeispiel;

Fig. 6

eine Detailansicht entlang der Schnittlinie VI-VI in Fig. 5;

Fig. 7

eine Detailansicht von VII in Fig. 5;

Fig. 8

eine Detailansicht entlang der Schnittlinie VIII-VIII in Fig. 5;

Fig. 9

das auf einem Betonsockel abgestützte unterste Lärmschutzelement gemäß dem zweiten Ausführungsbeispiel; und

Fig. 10

einen Horizontalschnitt durch zwei an einem Pfosten festgelegte Lärmschutzelemente gemäß dem zweiten Ausführungsbeispiel.

Further advantages and embodiments of the invention will become apparent from the following description of exemplary embodiments schematically illustrated in the drawing. In the drawing show:

Fig. 1

perspective and greatly simplified view of a noise barrier with horizontal obstruction of individual noise protection elements;

Fig. 2

a vertical section through an inventive noise protection element according to a first embodiment;

Fig. 3

a sectional view along III-III in Fig. 1;

Fig. 4

a vertical section through an inventive noise protection element according to a second embodiment;

Fig. 5

schematically greatly simplified a plan view of the groove in the side walls in the second embodiment;

Fig. 6

a detail view along the section line VI-VI in Fig. 5;

Fig. 7

a detail view of VII in Fig. 5;

Fig. 8

a detailed view along the section line VIII-VIII in Fig. 5;

Fig. 9

supported on a concrete base lowest noise protection element according to the second embodiment; and

Fig. 10

a horizontal section through two fixed to a post noise protection elements according to the second embodiment.

1 shows a noise protection wall, designated overall by 1, which is formed of several noise protection elements 10, the in Horizontal construction are arranged one above the other. The noise protection elements 10 are each at their front ends in posts 2 fixed with I-profile, which in a ground foundation 3 are anchored. The noise protection elements 10 each consist of elongated, self-supporting and to a box girder profile composite extruded profile sheets, wherein one of large-scale wall sides of each noise protection element 10 a Front wall 4 forms and the noise source, such as the Rails of a high-speed railway track, facing is, while the noise protection source facing away from the Rear wall 5 forms. Both the front and the rear wall 4.5 can provide a hole pattern to the sound refraction be, as is known in principle in the art.

The structure of a noise protection element 10 according to the invention a first embodiment of the invention is now with reference to Figs. 2 and 3 explained. each Noise protection element 10 consists of two identically constructed, as extruded profiles from a suitable aluminum alloy manufactured, half-shell-shaped profile sheets 11, 11 'the each have a large area wall surface 12, the corresponding the orientation of the noise protection element 10, the front wall 4 and the rear wall 5 of the noise protection element 10 forms. In FIGS. 2 and 3, the left wall surface 12 is in each case as a front wall 4 and the right wall surface 12 as a rear wall. 5 designated. However, it is apparent that the rear wall and front wall also be formed in each case by the other wall surface could. The wall surfaces 12 of both profile sheets 11, 11 'limit together with a total of 6 designated upper Sidewall and a total of 7 designated lower Sidewall a cavity 8, in which a sound-absorbing 9th is arranged in the embodiments of FIG. 2 and 3 consists of a Dämmwollplatte. Exclusively the two profile sheet half shells 11, 11 'form in the illustrated Mounting state thus a hollow box profile with the cavity. 8 The sound-absorbing body 9, the front wall 4 and the rear wall 5 are symmetrical to the center plane M of the noise protection element 10th arranged. The front wall 4 and rear wall 5 forming Wall surfaces 12 of both profile sheets 11, 11 'go to the side edges integral with a total of 13A and 13B, already trained in the prototyping of the profile sheets Subsection, wherein both subsections 13A, 13B each extend to the median plane M. Both the shell-shaped Profile sheet 11 and the half-shell-shaped Profile sheet 11 'is each at a side edge with a Part section 13A and at the other side edge with a section Provided 13B, the form-fitting at the level of the median plane M. by a total designated 15 profile connection connected to each other. Both the upper and the The lower side wall 6, 7 is thus about half each from the one portion 13A and the other half of the other subsection 13B formed. The profile connection 15 on the one hand comprises a profile section 16 on the free End of the section 13A as a first joining element, which in a the second joining element forming hollow chamber groove 17, which surrounded by the wall 18 at the free end of the section 13B is formed, positively engages. Of the Block-shaped profile section 16 is in this case in one piece on the Extension of an intermediate leg 19A of the subsection 13A and the wall 18 which surrounds the hollow chamber groove 17, on free end of an intermediate leg 19B of the section 13B educated. As can be seen in particular FIG. 3, extends the profile section 16 is substantially symmetrical on both sides of the median plane M and the hollow chamber groove 17 is also symmetrical about the midplane area M trained around. This minimizes the on the joint acting, dynamic forces, since the center plane M in terms the dynamic loads with the neutral fiber or neutral level of the horizontally installed noise protection element 10 coincides. The profile connection 15 between the Profile sheets 11, 11 'and the subsections 13A, 13B is by inserting the profile section 16 in the hollow chamber groove 17 and a longitudinal displacement of the two profile sheets 11, 11 ' achieved to each other, this rotated by 180 ° against each other be set before they are pushed together.

The profile section 16 is about a leg extension 20 with the intermediate leg 19A of the section 13A in one piece connected and integrally formed on the intermediate leg 19B Wall 18 for the hollow chamber groove 17 has in axial extension of the intermediate leg 19B an opening 21, through which engages the femoral extension 20. The hollow chamber groove 17 extends relative to the opening 21 both upwards as down, so that the wall 18 of the section 13B with the two limiting legs 22 and 23 of the opening 21st on profile sheet 11 an undercut for the profile section 16 at the portion 13A of the other profile sheet 11 ' forms. Both the profile section 16 and the hollow chamber groove 17 have a rectangular in the embodiment shown Cross-section.

The intermediate legs 19A and 19B of both profile sheets 11, 11 ' are relative to support legs 14A and 14B, which in the right Angle to the wall surfaces 12 extend and immediately to the side edges of the front or rear wall 4, 5, into the cavity 8 by means of the intermediate legs 24A and 24B set back so that the upper and lower Side walls 6, 7 of two superimposed noise protection elements 10 only in the region of the support legs 14A, 14B and in the Area of an outer leg 25 of the wall 18 of the hollow chamber groove 17 rest on each other. Both intermediate legs 19A, 19B are immediately after the offset leg 24A or 24B, provided with a T-shaped receiving groove 27, which of two integrally formed on the extruded profile sheets 11, respectively L-shaped legs 28, 29 are limited. The receiving groove 27 and the L-shaped legs 28, 29 are here each profile formed inside, so that they are in the Noise protection elements 10 are located in the cavity 8. In the T-shaped Receiving grooves 27 are inserted support strips 40, to support the sound absorbing body 9 laterally. Each of the formed with the profile section 16 for the profile connection 15 Intermediate leg 19A is further integral with two and provided on the outside on these molded angle webs 30, 31, with which a T-shaped receiving chamber 32 limited is, in which a Spreizdichtungsleiste 45 are inserted which can provide additional sound insulation between the Side walls 6, 7 of the noise protection elements 10 takes over. Of the Angled web 31 is integrally formed on the intermediate leg 19A, that in the assembled state with one of its leg sections parallel to the web portion 23 of the wall 18 for the hollow chamber groove 17 is applied to the longitudinal direction of the noise protection elements to fix the profile connection 15 by contact friction. In Figs. 2 and 3 is not shown that the profile connection 15 in the noise protection element 10 according to the first embodiment in addition to the positive connection still by a or in particular a plurality of locking means can be secured, which also in alignment with the neutral fiber of the noise protection element, Consequently here the median plane M, are arranged. The Locking means may in particular from a plug or There are screw, which, for example, the outer leg the wall 18 of the hollow chamber groove 17 and engages in the profile section 16 is screwed or inserted. With The locking means can then immediately a not shown End cover to be attached, which is the cavity of the the profiled sheets 11, 11 'formed hollow box profile also closes the front side.

The wall surfaces 12 of both profile sheets 11, 11 'of each noise protection element 10 are, as shown in FIG. 2, with several, the Extruding the profile sheets 11 urgeformten stabilizing webs 35 provided, which extends over the entire length of Noise protection elements 10 extend with constant cross-section and have a substantially Y-shaped contour. In the illustrated embodiment, both profile sheets 11, 11 'arranged with two each offset by 1/3 of the total height Stabilizing bars 35 provided. It is understood that depending on the expected dynamic loads further stabilizing bars 35 possibly also with different Geometries for the longitudinal grooves and the web extensions provided could become. The noise protection elements point to both Side of the profile connection 15 or laterally and below of the inner leg 34 each have a channel 38, 39, wherein the channel 38 between the leg 28 and the vertical web of the Wall 18 extends and the second channel 39 between the boundary leg 22 and the leg 28 is formed while the sound-absorbing body on the support strips 40 and the inner leg 34 is stored.

FIGS. 4 to 10 show a second exemplary embodiment according to the invention for a noise protection element 100. Also the noise protection element 100 consists of two identically shaped, as Extruded profiles produced from a suitable aluminum alloy, half-shell-shaped profile sheets 111, 111 ', the again each have a large area wall surface 112, which corresponds to the orientation of the noise protection element 100, As indicated in Fig. 4, the front wall 104 and rear wall 105th form. The front wall, i. the noise source like the tracks facing profiled sheet 111 may be perforated, wherein the hole area proportion based on the total area of Front wall 104 can make up about 27%. The rear wall 105 of the Noise protection elements 100 are preferably unperforated. The wall surfaces 112 of both profile sheets 111, 111 'limit together with an upper side wall 106 and a lower side wall 107 a cavity 108 in which a suitable Schalldämmkörper 109 is arranged, which, as in the first embodiment, can consist of a single Dämmwollplatte. From Fig. 4 it can be seen that the two profile sheet half shells 111, 111 'by means of a Schalldämmkörper 109 supporting, arranged in the cavity 108 of the hollow box profile and adjacent to the upper and lower side walls 106, 107, respectively arranged connecting profile body 160 nmiteinander to the Noise protection element 100 are connected. The exclusively in Area of the center plane M of the noise protection element 100 caused positive fixing of the two profile sheets 111, 111 'on the connecting profile body 160 is shown in Figures 6 to 8 with Reference numeral 115 denotes and will now be described with reference to these figures explained in more detail.

FIGS. 6 to 8 each show a vertical section through the noise protection elements 100 in the upper side wall 106 and the connecting profile body 160. For positive locking Connection of the two profile sheets 111, 111 'is the connecting profile body 160 facing at its side wall 106 and on the inside thereof adjacent front sides 161 with a Groove 162 provided. At this groove 162, the two profile half shells 111, 111 'positively fixed and with each other positively connected both profiled sheets 111, 111 ' go on both side walls 106 and 107 integrally into sections 113A and 113B respectively, wherein each of the subsections 113A, 113B first to the vertical front or rear wall adjoining, aligned at right angles to these Support legs 114A, 114B, which has a inwardly angled offset legs 124A and 124B, respectively, into one again perpendicular to the side walls and parallel to the Support legs 114A, 114B extending intermediate leg 119A, 119B, at the ends angled inward Edges 116 and edge webs are formed. Both edges 116 on both intermediate legs 119A, 119B, as Fig. 7 especially clearly shows, in the groove 162 and are located on the Side edges 162 'of the groove 162, so that in this way both profile sheets 111, 111 'form fit in the region of the median plane M connected to each other. This positive fixing the two profile sheets 111, 111 'on the groove 162 in the connecting profile body 160 is by means of screw 170 or 180 secured as additional locking, as explained will be.

The connecting profile bodies 160 are made of extruded Extruded profile bodies made of aluminum and comprise a comparatively strongly dimensioned, with solid material cross-section executed central web 164, which on the median plane M of the Noise protection element 100 is arranged and the bottom of the groove 162 forms. The connection profile body 160 extends to both sides of the central web 164 with a hollow chamber section 165, wherein a bottom wall 166 of each hollow chamber portion 165 right-angled protruding support webs 167 to the side Supporting the insulation board 109, the lateral Chamber side walls 168 inside the profile sheets 111 and 111 ' abuts and the adjacent to the side wall 106 front wall 161 according to the shape of the side wall 106 angled Partitions with a chamber offset leg 169 has. The connecting profile body 160 is therefore in the area the upper and lower ends of the noise protection elements 100 positively on the profile sheets 111, 111 ', whereby an additional Stiffening of the noise protection element 100 achieved becomes. The comparatively wide, made of solid material Middle web 164 of the connecting profile body 160 is dimensioned such that that locking screws 171 and 181 in the central web 164 can be screwed in and anchored there. With the Locking screws 171 and 181, each below the Screw head comprise a plate 172 or 182 or clamping ring, in each case a bar 190 is attached, located in Mounting state within via the offset legs 124A, 124B and intermediate legs 119A, 119B caused depression in both side walls 106, 107 is located. The back surface of the strips 190 is tightened by tightening the locking screws 171 and 181 pulled and braced against the connecting body 160, whereby the intermediate legs 119A, 119B of both profile sheets 111, 111 'between the bar 190 and the connecting profile body 160 are trapped. With this measure, the form-fitting Engagement of the edges 116 in the groove 162 of the connecting profile body 160 in addition by a clamping of the corresponding Subsections 113A and 113B of the profile sheets 111, 111 'supported. Both sections 113A, 113B, the together the upper and lower side wall 106, 107 of each noise protection element 100 form, are therefore both by positive engagement as well as locked by clamping, both being the clamping and the positive connection in particular to the area the median plane M and thus the area of the lowest focus on dynamic loads.

Fig. 8 shows a variant for a locking means 180, in which the clamping exclusively on the clamping forces between the strip 190 and the connection profile body 160 is reached. The clamping screw 181 lies with her Clamping plate in a groove recess in the bar 190, bordered the groove 162 in the connection profile body 160 and is with their threaded portion screwed into the central web 164.

Figures 6 and 7 show a particularly preferred embodiment for additional clamping and locking of the two Profile sheets 111, 111 'in the profile connection 115 with the Connecting profile body 160. As an additional safeguard includes the locking means shown in Figures 6 and 7 170 a clamping sleeve 175 made of stainless steel, which in the groove 162 is arranged. In Fig. 5 it is illustrated that the groove 162 in the area in which the locking means 170 be arranged with the clamping sleeves 175, a broadening or widening 176 of the groove 162 is formed. The expansion 176 of the groove 162 may in particular by a reduction or Countersink can be achieved, this reduction in the connection profile bodies is trained before this within the noise protection elements 100 for the positive connection of the two profile sheets 111, 111 'are inserted. The clamping sleeve 175 is sized so that its outer circumference substantially the diameter of the recess 176 reduced by two times Wall thickness of the profile sheets 111, 111 'corresponds. By Arranging the ferrules 175 in the with the expansion 176th provide groove and tightening the bordering in the central web 164 Fixing screw 171 are each the two in Fig. 5 only indicated edges 116 at the ends of the two sections 113A, 113B also expanded and thus in the Widening 176 involved. This additional, projecting Profiling of the edges 116 defines the profiled sheets 111, 111 ' positive fit with regard to all forces in the longitudinal direction the noise protection elements 100 fixed, with these form-fitting Connection still by the clamping by means of the clamping sleeve 175 and between the bar 190 and the front wall 161 supports the connecting profile body acting clamping forces and secured. The additional locking by partial Widening and bending the edges 116 provides an additional Strength of the noise protection element according to the invention 100 against the dynamic loads and vibrations, which occur when passing a high-speed train can. In a noise protection element according to the invention 100 can also be exclusively locking 170 with Clamping sleeves 175 are used.

Reference will now be made again to FIGS. 4 and 9 and 10. From these figures it is well seen that in the Last 190, with the locking screws 181 each against a connecting profile body 160 are braced, to both Sides of the screw head of the screw 181 receiving Groove recess receptacles 195 for O-shaped sealant 145 or Sealing strips are formed. Each shot 195 includes one Outwardly facing, in cross-section half-round hollowed groove 196, at which the O-shaped portion of the sealant 145th can create, as well as one to the bottom or bottom vertex of the Groove 196 open channel 197, in which the sealant 145th by means of an integrally adjoining the O-shaped section T-shaped section or the like. can be anchored. in the Mounting state of two superposed noise protection elements 100, as shown in Fig. 4, then sets the Sealant with the O-shaped section in half each in the groove 196 of the opposing strips 190, ensuring an effective seal between the side walls 106, 107 of the lamb protection elements is achieved. The same, in the receptacles 195 of the strips 190 anchored sealant 145th Can be used to the lowest noise protection element 100 sealed on a concrete base 103 support.

Figures 4 and 9 further show that the connecting profile body 160 in the region of the two profile chambers 165 separating and locking the locking means 170 and 180 serving central web 164 near or adjacent to the bottom 166 with a keyhole-like profile recess 185 are provided. This profile recess 185 serves in addition, at the two vertical end faces each Noise protection element 100 in a simple way a front cover 150 to fasten, as shown in Figure 10. The fastening screw shown schematically in Figure 10 151 for attachment of the end cover 150 passes through this and then grips into the keyhole-like recess 185 of the central web 164. The end cover 150 is provided with hook projections 152 provided, the insulation board 109 also Position and support at the front. Furthermore, the End cover 150 is on the outside of the profile sheets or the front wall 104 and rear wall 105 applying envelope edges 153, with further admissions for suitable sealants 155 are provided in the assembled state of a noise barrier between the profile webs 2 'of the I-profile post 2 and the front and rear walls 104, 105 in the region of the front ends the noise protection elements 100 are arranged to also the Prevent occurrence of vibrations. All sealants can be made from EPDM gaskets or other, suitable gaskets consist. Furthermore, the profile sheets 111, 111 'with suitable longitudinal profiles such as those shown in Figure 4 Longitudinal profiles 135 be provided to an additional To achieve stiffening.

For the expert will be apparent from the foregoing description numerous deviations that fall within the scope of the attached Claims are to fall. The neutral fiber must not necessarily coincide with the median plane. For the Profile connection in the first embodiment, the Both sections also joining elements with other cross sections such as. dovetail-shaped joining elements or the like. include. The Schalldämmkörper can from arbitrary, consist of suitable materials, wherein in the same hollow box section by using other support strips as well Schalldämmkörper can be used with other thicknesses. In the cavity of the noise protection elements can also Schalldämmkörper are arranged, which are two highly absorbent Dämmwollplatten have on both sides of a centrally on the Center plane of the noise protection element arranged wood fiber cement board or the like. are located. The inventively designed Noise protection elements and noise barriers in particular on railway lines for high-speed trains, at take-off and Runways for aircraft and other applications be used, on which the noise protection elements and - high, dynamic pressure and suction loads.

Claims (20)

Noise protection element for the construction of noise barriers, having a front wall, a rear wall, an upper side wall and a lower side wall having hollow box profile, which is composed of a plurality interconnected by a profile connection profile sheets and in the cavity of a preferably from the lower to the upper side wall and towering is arranged over the length of the hollow box profile symmetrically to the median plane between the front wall and rear wall extending Schalldämmkörper or can be arranged, characterized in that the hollow box profile of a first and a second shell-shaped profile sheet (11, 11 ', 111, 111') is composed, wherein the the first profiled sheet (11; 111) integrally comprises the front wall (4; 104), a subsection (13B; 113B) of the lower side wall (7; 107) and a subsection (13A; 113A) of the upper side wall (6; second profiled sheet (11 ';111') integrally the rear wall (5; 105), a Tei section (13A; 113A) of the lower side wall (7; 107) and a subsection (13B; 113B) of the upper side wall (6; 106), and the first and second profiled sheets (11,11 ';111,111') at the upper and lower sides on the lower side wall (6, 7; 106, 107) in each case at the level of the median plane (M) by a positive profile connection (15; 115) are interconnected. Noise protection element according to claim 1, characterized in that both profiled sheets (11, 11 ', 111, 111') are extruded profiles, wherein the profiled sheets preferably consist of an aluminum alloy, in particular a high-vibration aluminum alloy. Noise protection element according to claim 1 or 2, characterized in that both profiled sheets (11, 11 '; 111, 111') have an identical profile shape. Noise protection element according to one of claims 1 to 3, characterized in that the profile connection (115) by means of at least one locking means (170, 180) is secured. Noise protection element according to claim 4, characterized in that the locking means (170, 180) are arranged at the level of the median plane (M) and comprise a screw means (171, 181). Noise protection element according to one of Claims 1 to 5, characterized in that each profile sheet (11; 11 ') has a first joining element (16) on one section (13A) and a second element (17) on the other section (13B) , wherein preferably the first joining element for the profile connection (15) consists of a hollow chamber groove (17) with undercut and the second joint element consists of a form-fitting anchored in this profile section (16). Noise protection element according to claim 6, characterized in that the profile section (16) and the hollow chamber groove (17) are rectangular, wherein preferably the profile section (16) has a block profile and the hollow chamber groove (17) or its wall (18) has a square profile and / or for each profile sheet (11; 11 ') the profile section (16) the end of the section (13A) for the one side wall (6; 7) and the hollow chamber groove (17) or its wall (18) the end of the section (13B) for the other side wall (7; 6). Noise protection element according to one of claims 4 or 5 and 6 to 7, characterized in that the screw means engages in mutually aligned in two joining elements formed holes, in particular engages in holes which the hollow chamber groove (17) or its wall (18) and the profile section ( 16) at least partially pass through. Noise protection element according to one of Claims 6 to 8, characterized in that adjoining the side edges of the front and rear walls (4, 5) is a support leg (14A, 14B) running at right angles thereto, which has an inwardly angled offset leg (24A, 24B) merges into an intermediate leg (19A, 19B), at the end of which the joining elements, in particular the profile section (16) or the hollow chamber section (17) or its wall (18), are formed. Noise protection element according to claim 4 or 5, characterized in that the profile connection (115) on both side walls (106, 107) comprises a connection profile body (160) arranged in the cavity (108), which has a groove (162) facing in the mounting state of the adjacent side wall. is provided, on which the sections (113A, 113B) of the side walls (106, 107) positively fixed and secured by means of the locking means (170, 180). Noise protection element according to claim 10, characterized in that with the locking means (170, 180, 190), the sections are partially clamped against the connecting profile body (160) and the profile connection (115) is additionally secured by clamping. Noise protection element according to claim 10 or 11, characterized in that the connection profile bodies (160) consist of extruded extruded profile bodies, preferably of aluminum. Noise protection element according to one of Claims 10 to 12, characterized in that each connecting profile body (160) has a central center web (164) arranged on the median plane (M) and forming the bottom of the groove (162), in which the locking means (170, 180) are anchored or anchored, wherein preferably the connecting profile body (160) on both sides of the central web (164) in each case to the front wall (104) and the rear wall (107) zoom reaching hollow chamber portion (165). Noise protection element according to one of claims 10 to 13, characterized in that the sections (113A, 113B) of the side walls have at their ends preferably right-angled edge webs (116) which engage in the groove (162), preferably at the side edges of Front and rear wall a perpendicular thereto extending support leg (114A, 114B) connects, which merges via an inwardly angled offset leg (124A, 124B) in an intermediate leg (119A, 119B), at the ends of the angled edges (116) are formed , Noise protection element according to claim 14, characterized in that at least some of the locking means (170) are associated with clamping sleeves (175) which clamp the edge webs (116) against the groove side flanks (162 '), preferably the groove (162) with countersinks or widenings (16). 176) is provided, in which the clamping sleeves (175) engage positively. Noise protection element according to one of Claims 10 to 15, characterized in that the connecting profile bodies (160) are provided on their undersides (166) facing away from the grooves (162) integrally with supporting webs (167) for the positioning and lateral support of the sound-absorbing body (109). Noise protection element according to one of claims 14 and 15 or 16, characterized in that the central web (164) of the connecting profile body (166) adjacent to the underside thereof is provided with a keyhole-like profile recess (185). Noise protection element according to one of claims 10 to 17, characterized in that the locking means (170, 180) strips (190) on the side walls (106, 107) are attached, which are provided with receptacles (195) for sealing elements (145), wherein preferably the receptacles (145) an outwardly facing, in cross-section halbbrund grooved groove (196) as a contact portion for the sealing element (145) and formed with an undercut to the bottom vertex of the groove (196) open channel (197) as anchoring portion for Has sealing element (145). Noise protection element for railway lines, in particular high-speed trains or other applications with alternating suction and pressure loads, characterized in that the noise protection wall (1) of superposed noise protection elements (10; 100) is formed according to one of claims 1 to 23. Noise protection wall according to claim 19, characterized in that the noise protection elements are fixed on the front side posts (2) with I-profile, wherein between the noise protection elements (10; 100) and the post (2) a rubber bearing or sealing elements (155) is arranged for vibration damping and / or the lowest noise protection elements (100) are supported on a concrete base (103), wherein between the lower side wall (107) of the noise protection element and the concrete base (103) at least one preferably in the bar (190) anchored sealing element (145) is arranged ,

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