{"id":50923,"date":"2018-08-02T16:58:48","date_gmt":"2018-08-02T14:58:48","guid":{"rendered":"https:\/\/www.walraven.com\/?p=120593"},"modified":"2024-06-13T09:40:27","modified_gmt":"2024-06-13T07:40:27","slug":"skupinove-pouziti-kotev","status":"publish","type":"post","link":"https:\/\/www.walraven.com\/cz\/o-walraven\/novinky\/skupinove-pouziti-kotev\/","title":{"rendered":"Co znamen\u00e1 skupinov\u00e9 pou\u017eit\u00ed kotev"},"content":{"rendered":"<h2><strong>Co znamen\u00e1 skupinov\u00e9 pou\u017eit\u00ed kotev<\/strong><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-120540 alignright\" src=\"https:\/\/www.walraven.com\/wp-content\/uploads\/sites\/7\/2018\/08\/understanding-multiple-use-applications.jpg\" alt=\"understanding-multiple-use-applications\" width=\"300\" height=\"200\" \/>Setkali jste se n\u011bkdy s&nbsp;fr\u00e1zemi jako\u00a0<em>skupinov\u00e9 pou\u017eit\u00ed<\/em>\u00a0nebo\u00a0<em>skupinov\u00e9 upevn\u011bn\u00ed<\/em>\u00a0v kontextu ukotven\u00ed a nebyli jste si jisti, co znamenaj\u00ed?\u00a0V tomto \u010dl\u00e1nku se bl\u00ed\u017ee pod\u00edv\u00e1me na to, co tyto pojmy obvykle ozna\u010duj\u00ed.<\/p>\n<p>V Evrop\u011b je v\u011bt\u0161ina kotev vystaven\u00fdch statick\u00e9mu a kvazistatick\u00e9mu zat\u00ed\u017een\u00ed navr\u017eena v&nbsp;souladu s&nbsp;\u201eETAG 001, p\u0159\u00edloha C: Metody navrhov\u00e1n\u00ed kotev\u201c, publikac\u00ed Evropsk\u00e9 organizace pro technick\u00e1 schv\u00e1len\u00ed.\u00a0B\u011b\u017en\u011b zn\u00e1m\u00e1 jako \u201eP\u0159\u00edloha C\u201c poskytuje r\u00e1mec pro n\u00e1vrh kotven\u00ed do betonu a nasti\u0148uje t\u0159i metody n\u00e1vrhu kotev, jmenovit\u011b metody A, B a C.<\/p>\n<p>Tyto metody n\u00e1vrhu maj\u00ed n\u011bco spole\u010dn\u00e9ho: v\u0161echny vy\u017eaduj\u00ed, aby n\u00e1vrh kotvy prok\u00e1zal, \u017ee hodnota n\u00e1vrhov\u00fdch p\u016fsoben\u00ed nep\u0159ekra\u010duje hodnotu n\u00e1vrhov\u00e9 \u00fanosnosti (Sd &lt; Rd). Krom\u011b toho, a\u0165 u\u017e je armatura ukotvena jedinou kotvou nebo skupinou kotev, spr\u00e1vn\u00e1 funkce ka\u017ed\u00e9 jednotliv\u00e9 kotvy je rozhoduj\u00edc\u00ed pro celkovou spolehlivost konstruk\u010dn\u00edho prvku.<\/p>\n<p>&#8222;ETAG 001 \u010c\u00e1st 6: Kotvy pro v\u00edcen\u00e1sobn\u00e9 pou\u017eit\u00ed pro nekonstruk\u010dn\u00ed aplikace&#8220;, dal\u0161\u00ed publikace EOTA, zav\u00e1d\u00ed term\u00edn v\u00edcen\u00e1sobn\u00e9 pou\u017eit\u00ed, kter\u00fd p\u0159in\u00e1\u0161\u00ed dal\u0161\u00ed po\u017eadavky na konstrukci upev\u0148ovac\u00edho prvku. Uv\u00e1d\u00ed n\u00e1sleduj\u00edc\u00ed: &#8222;konstrukce upev\u0148ovac\u00edho prvku je takov\u00e1, aby v&nbsp;p\u0159\u00edpad\u011b nadm\u011brn\u00e9ho poklesu nebo poruchy jedn\u00e9 kotvy mohlo b\u00fdt zat\u00ed\u017een\u00ed p\u0159eneseno na sousedn\u00ed kotvy, ani\u017e by byly v\u00fdznamn\u011b poru\u0161eny po\u017eadavky na upev\u0148ovac\u00ed prvek v&nbsp;mezn\u00edm stavu pou\u017eitelnosti a mezn\u00edm stavu \u00fanosnosti.&#8220; To znamen\u00e1, \u017ee ka\u017ed\u00fd upev\u0148ovac\u00ed prvek mus\u00ed m\u00edt alespo\u0148 jeden upev\u0148ovac\u00ed bod, kter\u00fd zase mus\u00ed m\u00edt skupinu kotev, nap\u0159. alespo\u0148 3 nebo 4 kotvy. Pokud jedna z&nbsp;kotev v&nbsp;upev\u0148ovac\u00edm bod\u011b sel\u017ee, mus\u00ed b\u00fdt zb\u00fdvaj\u00edc\u00ed kotvy schopny kompenzovat selh\u00e1n\u00ed kotvy a udr\u017eet upev\u0148ovac\u00ed prvek na m\u00edst\u011b. Takov\u00e9 aplikace se proto pova\u017euj\u00ed za aplikace s&nbsp;v\u00edcen\u00e1sobn\u00fdm pou\u017eit\u00edm nebo v\u00edcen\u00e1sobn\u00fdm upevn\u011bn\u00edm.<\/p>\n<p>N\u00ed\u017ee uveden\u00e1 infografika poskytuje zjednodu\u0161en\u00fd p\u0159ehled dvou p\u0159\u00edstup\u016f k&nbsp;n\u00e1vrhu kotvy.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-54803 size-large\" src=\"https:\/\/www.walraven.com\/wp-content\/uploads\/sites\/7\/2018\/08\/skupinove_pouziti_kotev-1024x777.png\" alt=\"skupinov\u00e9 pou\u017eit\u00ed kotev\" width=\"600\" height=\"400\" \/><\/p>\n<p><span class=\"--l --r sentence_highlight\"><span class=\"--l --r popup_anchor_highlight__with_key_targetContextEditing\">V<\/span>\u00fdrobky, kter\u00e9 maj\u00ed evropsk\u00e9 technick\u00e9 posouzen\u00ed vydan\u00e9 na z\u00e1klad\u011b ETAG 001, \u010d\u00e1st 6, se sm\u00ed pou\u017e\u00edvat pouze pro v\u00edcen\u00e1sobn\u00e9 pou\u017eit\u00ed pro jin\u00e9 ne\u017e konstruk\u010dn\u00ed aplikace. <\/span><span class=\"--l --r sentence_highlight\">Typick\u00e9 aplikace pro v\u00edcen\u00e1sobn\u00e9 pou\u017eit\u00ed zahrnuj\u00ed kotven\u00ed potrub\u00ed, kabelov\u00fdch l\u00e1vek nebo zav\u011b\u0161en\u00fdch li\u0161tov\u00fdch syst\u00e9m\u016f.<\/span><\/p>\n<p><span class=\"--l --r sentence_highlight\"><span class=\"--l --r popup_anchor_highlight__with_key_targetContextEditing\">\u00da<\/span>pln\u00e1 definice v\u00edcen\u00e1sobn\u00e9ho pou\u017eit\u00ed podle \u010dlensk\u00fdch st\u00e1t\u016f je uvedena v&nbsp;p\u0159\u00edloze 1 ETAG 001 \u010d\u00e1st 6. <\/span><span class=\"--l --r sentence_highlight\">Pokud \u010dlensk\u00fd st\u00e1t definici neuv\u00e1d\u00ed, lze pou\u017e\u00edt n\u00e1sleduj\u00edc\u00ed v\u00fdchoz\u00ed hodnoty:<\/span><\/p>\n<table style=\"border-spacing: 10px;border-collapse: separate;border: 1px solid #006950\" width=\"100%\">\n<tbody>\n<tr>\n<td width=\"33%\">Minim\u00e1ln\u00ed po\u010det kotevn\u00edch bod\u016f<\/td>\n<td width=\"33%\"><span class=\"--l --r hover:bg-[#B4DAE8] hover:dark:bg-blue-next-600\"><span class=\"--l --r popup_anchor_highlight__with_key_targetContextEditing\">M<\/span>inim\u00e1ln\u00ed<\/span> <span class=\"--l --r hover:bg-[#B4DAE8] hover:dark:bg-blue-next-600\">po\u010det<\/span> <span class=\"--l --r hover:bg-[#B4DAE8] hover:dark:bg-blue-next-600\">kotev<\/span> <span class=\"--l --r hover:bg-[#B4DAE8] hover:dark:bg-blue-next-600\">na<\/span> <span class=\"--l --r hover:bg-[#B4DAE8] hover:dark:bg-blue-next-600\">upev\u0148ovac\u00ed<\/span> <span class=\"--l --r hover:bg-[#B4DAE8] hover:dark:bg-blue-next-600\">bod<\/span><\/td>\n<td width=\"33%\"><span class=\"--l --r popup_anchor_highlight__with_key_targetContextEditing\">M<\/span>axim\u00e1ln\u00ed konstruk\u010dn\u00ed hodnota p\u016fsoben\u00ed na jeden upev\u0148ovac\u00ed bod<\/td>\n<\/tr>\n<tr>\n<td width=\"33%\">[n<sub>1<\/sub>]<\/td>\n<td width=\"33%\">[n<sub>2<\/sub>]<\/td>\n<td width=\"33%\">[n<sub>3<\/sub>]<\/td>\n<\/tr>\n<tr>\n<td width=\"33%\">3<\/td>\n<td width=\"33%\">1<\/td>\n<td width=\"33%\">2,0 kN<\/td>\n<\/tr>\n<tr>\n<td width=\"33%\">4<\/td>\n<td width=\"33%\">1<\/td>\n<td width=\"33%\">3,0 kN<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Maxim\u00e1ln\u00ed n\u00e1vrhov\u00e1 hodnota p\u016fsoben\u00ed na jeden upev\u0148ovac\u00ed bod m\u016f\u017ee b\u00fdt zv\u00fd\u0161ena, pokud je v&nbsp;n\u00e1vrhu kotvy prok\u00e1z\u00e1no, \u017ee jsou spln\u011bny po\u017eadavky na pevnost a tuhost upev\u0148ovac\u00edho prvku v&nbsp;provozuschopn\u00e9m a mezn\u00edm stavu po selh\u00e1n\u00ed jedn\u00e9 kotvy.<\/p>\n<p>Reference:<\/p>\n<ul>\n<li><span class=\"--l --r sentence_highlight\"><span class=\"--l --r popup_anchor_highlight__with_key_targetContextEditing\">E<\/span>TAG 001 \u010c\u00e1st 6: Kotvy pro v\u00edcen\u00e1sobn\u00e9 pou\u017eit\u00ed pro nekonstruk\u010dn\u00ed aplikace 1, PDF, Brusel: <\/span><span class=\"--l --r sentence_highlight\">EOTA, leden 2011.<\/span><\/li>\n<li><span class=\"--l --r popup_anchor_highlight__with_key_targetContextEditing\">E<\/span>AD 330232-00-0601 MECHANICK\u00c9 SPOJOVAC\u00cd PROST\u0158EDKY PRO POU\u017dIT\u00cd V&nbsp;BETONU, PDF: EOTA, 2016.<\/li>\n<\/ul>\n<p>Chcete se dozv\u011bd\u011bt v\u00edce o na\u0161ich kotv\u00e1ch pro vysok\u00e9 zat\u00ed\u017een\u00ed?<\/p>\n<p><a class=\"button\" style=\"font-size: 14px;color: #fff700\" href=\"https:\/\/www.walraven.com\/cz\/kotvy\/\" target=\"_blank\" rel=\"noopener\">Nav\u0161tivte na\u0161i str\u00e1nku Kotvy pro vysok\u00e9 zat\u00ed\u017een\u00ed<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Co znamen\u00e1 skupinov\u00e9 pou\u017eit\u00ed kotev Setkali jste se n\u011bkdy s&nbsp;fr\u00e1zemi jako\u00a0skupinov\u00e9 pou\u017eit\u00ed\u00a0nebo\u00a0skupinov\u00e9 upevn\u011bn\u00ed\u00a0v kontextu ukotven\u00ed a nebyli jste si jisti, co znamenaj\u00ed?\u00a0V tomto \u010dl\u00e1nku se bl\u00ed\u017ee pod\u00edv\u00e1me na to, co tyto pojmy obvykle ozna\u010duj\u00ed. V&nbsp;Evrop\u011b je v\u011bt\u0161ina kotev vystaven\u00fdch statick\u00e9mu a kvazistatick\u00e9mu zat\u00ed\u017een\u00ed navr\u017eena v&nbsp;souladu s&nbsp;\u201eETAG 001, p\u0159\u00edloha C: Metody navrhov\u00e1n\u00ed kotev\u201c, publikac\u00ed Evropsk\u00e9 [&hellip;]<\/p>\n","protected":false},"author":43,"featured_media":50924,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1186],"tags":[],"class_list":["post-50923","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Co znamen\u00e1 skupinov\u00e9 pou\u017eit\u00ed kotev - Walraven \u010cesk\u00e1 republika<\/title>\n<meta name=\"description\" content=\"Setkali jste se n\u011bkdy s fr\u00e1zemi jako skupinov\u00e9 pou\u017eit\u00ed nebo v\u00edcen\u00e1sobn\u00e9 upevn\u011bn\u00ed v kontextu ukotven\u00ed a nebyli jste si jisti, co znamenaj\u00ed? 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