{"id":2203,"date":"2020-09-09T07:08:24","date_gmt":"2020-09-09T07:08:24","guid":{"rendered":"https:\/\/acusticsambient.com\/pantallas-acusticas\/"},"modified":"2020-11-04T11:27:52","modified_gmt":"2020-11-04T11:27:52","slug":"pantalles-acustiques","status":"publish","type":"page","link":"https:\/\/acusticsambient.com\/ca\/pantalles-acustiques\/","title":{"rendered":"Pantalles ac\u00fastiques"},"content":{"rendered":"

[vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”grid” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” css=”.vc_custom_1600364212737{padding-top: 120px !important;padding-bottom: 120px !important;}” z_index=””][vc_column][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=””][vc_column_inner width=”1\/2″][vc_column_text css=”.vc_custom_1604489031775{padding-top: 30px !important;padding-right: 30px !important;padding-bottom: 30px !important;}”]<\/p>\n

A\u00efllament ac\u00fastic amb pantalles<\/h3>\n

La funci\u00f3 principal de les barreres ac\u00fastiques \u00e9s protegir els receptors de soroll excessiu generat pel tr\u00e0nsit rodat, soroll industrial, m\u00e0quines de climatitzaci\u00f3, etc.
\nSi b\u00e9 la responsabilitat de mitigar el soroll de tr\u00e0nsit rodat recau en els projectes vials o de promotor quan l’edifici \u00e9s el que s’instal\u00b7la prop d’una infraestructura existent* (Veure CTE), les pantalles ac\u00fastiques es consideren les mesures de mitigaci\u00f3 de soroll m\u00e9s raonables disponibles.
\nCal considerar molts factors en el disseny de les barreres ac\u00fastiques. En primer lloc, les pantalles han de ser ac\u00fasticament adequades. Un disseny optimitzat de pantalles ac\u00fastiques necessitaria les degudes consideracions tant des del punt de vista ac\u00fastic, urban\u00edstic, est\u00e8tic, impacte visual, etc….,
\nEl material, la ubicaci\u00f3, les dimensions i les formes de les pantalles ac\u00fastiques poden afectar el rendiment ac\u00fastic.
\nEl cam\u00ed en l\u00ednia recta original des de la font al receptor ara es veu interromput per la pantalla de soroll. Depenent del material de la pantalla contra el soroll i del tractament de la superf\u00edcie, una part de l’energia del soroll original es reflecteix o es dispersa cap a la font. Altres porcions s\u00f3n absorbides pel material de la pantalla contra el soroll, transmeses a trav\u00e9s de la pantalla contra el soroll o difractades en l’extrem superior de la pantalla contra el soroll.
\n[\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/2″ css=”.vc_custom_1600764993225{padding-top: 300px !important;padding-bottom: 100% !important;background-image: url(https:\/\/acusticsambient.com\/wp-content\/uploads\/2020\/09\/PANTALLA-7-scaled.jpg?id=1837) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}”][\/vc_column_inner][\/vc_row_inner][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=””][vc_column_inner width=”1\/2″ css=”.vc_custom_1600765121980{padding-top: 300px !important;padding-bottom: 150% !important;background-image: url(https:\/\/acusticsambient.com\/wp-content\/uploads\/2020\/09\/PANTALLA-6-scaled.jpg?id=1835) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}”][\/vc_column_inner][vc_column_inner width=”1\/2″][vc_column_text css=”.vc_custom_1604489114537{padding-bottom: 30px !important;padding-left: 30px !important;}”]El soroll transm\u00e8s, per\u00f2, continua cap al receptor amb una “p\u00e8rdua” d’energia ac\u00fastica (energia ac\u00fastica de reflexi\u00f3 i part transformada en calor).<\/p>\n

\n

Perqu\u00e8 una pantalla sigui completament efectiva, la quantitat d’energia sonora que la travessa ha de ser significativament menor que la que passa per la part superior mitjan\u00e7ant l’efecte de difracci\u00f3<\/strong><\/h3>\n<\/blockquote>\n

En les etapes de disseny i construcci\u00f3 hem de cuidar els detalls per evitar ponts ac\u00fastics, escletxes, ja sigui amb els panells contigus, al llarg de la part inferior o espais per a senyals de tr\u00e0nsit, unions de construcci\u00f3 o juntes de dilataci\u00f3.
\nL’efic\u00e0cia d’una pantalla prima d’una determinada al\u00e7ada pot augmentar acostant l’extrem de difracci\u00f3 a la font de soroll, augmentant aix\u00ed la difer\u00e8ncia de traject\u00f2ria. Quan es col\u00b7loca una pantalla alta prop de la cal\u00e7ada, inclinar la secci\u00f3 superior cap a la font pot proporcionar un benefici addicional. L’augment de nombre d’extrems difractant tamb\u00e9 pot millorar considerablement l’atenuaci\u00f3.
\nEn la majoria dels casos, ser\u00e0 relativament cost\u00f3s proporcionar m\u00e9s d’una pantalla, per\u00f2, al col\u00b7locar panells laterals curts a una pantalla de manera que hi hagi diversos elements d’infractors en el mateix nivell, pot augmentar el nombre d’extrems difractant. Els assaigs a gran escala amb una pantalla de triple tall han demostrat beneficis de fins a 3 dB (A) en determinades circumst\u00e0ncies. Haurem de garantir la seguretat integral del projecte mitjan\u00e7ant un \u00f2ptim dimensionament estructural.<\/p>\n

El disseny i els materials utilitzats en les pantalles ac\u00fastiques se seleccionaran per garantir que factors com la resist\u00e8ncia a l’envelliment \/ corrosi\u00f3, la resist\u00e8ncia a l’impacte i la resist\u00e8ncia al foc, etc. puguin satisfer els requisits especificats de cada projecte.
\n[\/vc_column_text]\n\n\t\n\t M\u00e9s Projectes<\/span>\t<\/a>\n\n[\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” z_index=”” css=”.vc_custom_1600335949546{background-color: #ffffff !important;}”][vc_column][vc_empty_space height=”48px”][vc_column_text]<\/p>\n

Els Nostres Projectes:<\/span><\/h2>\n

Pantalles ac\u00fastiques<\/span><\/h3>\n

[\/vc_column_text][vc_empty_space height=”48px”][vc_gallery type=”image_grid” images=”1828,1830,1832,1834,1836,1838,1840″ img_size=”500×500″ column_number=”4″ grayscale=”no” images_space=”gallery_with_space”][vc_empty_space height=”48px”][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"

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