{"id":3613,"date":"2026-08-26T08:37:47","date_gmt":"2026-08-26T08:37:47","guid":{"rendered":"https:\/\/www.zkhoist.com\/?post_type=posts&p=3613"},"modified":"2026-08-26T08:37:49","modified_gmt":"2026-08-26T08:37:49","slug":"freestanding-jib-crane-installation-3-foundation-methods-explained","status":"publish","type":"posts","link":"https:\/\/www.zkhoist.com\/cs\/posts\/freestanding-jib-crane-installation-3-foundation-methods-explained\/","title":{"rendered":"Instalace voln\u011b stoj\u00edc\u00edho oto\u010dn\u00e9ho je\u0159\u00e1bu: Vysv\u011btlen\u00ed 3 metod zakl\u00e1d\u00e1n\u00ed"},"content":{"rendered":"
\"\"<\/figure>\n\n\n\n

A\u0165 u\u017e voln\u011b stoj\u00edc\u00ed oto\u010dn\u00fd je\u0159\u00e1b<\/a> Bezpe\u010dn\u00e1 instalace ovliv\u0148uje nejen jeho norm\u00e1ln\u00ed provoz, ale tak\u00e9 bezpe\u010dnost zved\u00e1n\u00ed a dlouhodobou \u017eivotnost. B\u011bhem provozu vytv\u00e1\u0159\u00ed b\u0159emeno um\u00edst\u011bn\u00e9 bl\u00edzko konce ramene je\u0159\u00e1bu zna\u010dn\u00fd klopn\u00fd moment na sloup je\u0159\u00e1bu a z\u00e1klady. I kdy\u017e dva oto\u010dn\u00e9 je\u0159\u00e1by maj\u00ed stejnou jmenovitou nosnost, r\u016fzn\u00e9 d\u00e9lky ramen mohou v\u00e9st k velmi odli\u0161n\u00fdm po\u017eadavk\u016fm na z\u00e1klady a kotevn\u00ed syst\u00e9m.<\/p>\n\n\n\n

Spojen\u00ed mezi z\u00e1kladnou je\u0159\u00e1bu a z\u00e1kladem by proto nem\u011blo b\u00fdt vyb\u00edr\u00e1no pouze na z\u00e1klad\u011b nosnosti. Je t\u0159eba zv\u00e1\u017eit i dal\u0161\u00ed faktory, v\u010detn\u011b jmenovit\u00e9ho zat\u00ed\u017een\u00ed, d\u00e9lky v\u00fdlo\u017en\u00edku, provozn\u00ed frekvence, stavu betonu a stavebn\u00edch podm\u00ednek na staveni\u0161ti.<\/p>\n\n\n\n

Existuj\u00ed t\u0159i b\u011b\u017en\u00e9 metody p\u0159ipojen\u00ed z\u00e1klad\u016f pro voln\u011b stoj\u00edc\u00ed oto\u010dn\u00fd je\u0159\u00e1b: instalace na velkou z\u00e1kladovou desku, instalace chemick\u00fdch kotevn\u00edch \u0161roub\u016f a z\u00e1klad s klec\u00ed pro zapu\u0161t\u011bn\u00e9 kotvy.<\/p>\n\n\n\n

Ka\u017ed\u00e1 metoda m\u00e1 sv\u00e9 vlastn\u00ed vhodn\u00e9 pou\u017eit\u00ed. Neexistuje jedin\u00e9 \u0159e\u0161en\u00ed z\u00e1klad\u016f, kter\u00e9 by bylo vhodn\u00e9 pro ka\u017ed\u00fd projekt voln\u011b stoj\u00edc\u00edho oto\u010dn\u00e9ho je\u0159\u00e1bu.<\/p>\n\n\n\n

Instalace velk\u00e9 z\u00e1kladov\u00e9 desky: Rozlo\u017een\u00ed zat\u00ed\u017een\u00ed na v\u011bt\u0161\u00ed z\u00e1kladovou plochu<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Instalace na velkou z\u00e1kladovou desku m\u016f\u017ee b\u00fdt pou\u017eita pro n\u011bkter\u00e9 voln\u011b stoj\u00edc\u00ed oto\u010dn\u00e9 je\u0159\u00e1by s malou a st\u0159edn\u00ed nosnost\u00ed, obvykle v rozmez\u00ed p\u0159ibli\u017en\u011b 1\u20133 tun. Vhodnost t\u00e9to metody je v\u0161ak t\u0159eba ov\u011b\u0159it na z\u00e1klad\u011b d\u00e9lky v\u00fdlo\u017en\u00edku, klopn\u00e9ho momentu, rozm\u011br\u016f z\u00e1kladov\u00e9 desky, uspo\u0159\u00e1d\u00e1n\u00ed kotev a podm\u00ednek betonov\u00e9ho z\u00e1kladu.<\/p>\n\n\n\n

Tato metoda instalace vyu\u017e\u00edv\u00e1 \u0161ir\u0161\u00ed a siln\u011bj\u0161\u00ed ocelovou z\u00e1kladn\u00ed desku pod sloupem je\u0159\u00e1bu s n\u011bkolika kotevn\u00edmi body rozm\u00edst\u011bn\u00fdmi po cel\u00e9 desce.<\/p>\n\n\n\n

Je d\u016fle\u017eit\u00e9 si uv\u011bdomit, \u017ee v\u011bt\u0161\u00ed z\u00e1kladov\u00e1 deska neznamen\u00e1, \u017ee voln\u011b stoj\u00edc\u00ed oto\u010dn\u00fd je\u0159\u00e1b lze jednodu\u0161e instalovat na b\u011b\u017enou d\u00edlenskou podlahu, ani nem\u016f\u017ee nahradit spr\u00e1vn\u011b navr\u017een\u00fd betonov\u00fd z\u00e1klad.<\/p>\n\n\n\n

Hlavn\u00edm \u00fa\u010delem v\u011bt\u0161\u00ed z\u00e1kladov\u00e9 desky je zv\u011bt\u0161it plochu pro rozlo\u017een\u00ed zat\u00ed\u017een\u00ed a poskytnout dal\u0161\u00ed kotevn\u00ed body, co\u017e umo\u017e\u0148uje p\u0159en\u00e1\u0161et zat\u00ed\u017een\u00ed a klopn\u00fd moment generovan\u00fd oto\u010dn\u00fdm je\u0159\u00e1bem na v\u011bt\u0161\u00ed z\u00e1kladovou plochu.<\/p>\n\n\n\n

Kdy je vhodn\u00e1 velk\u00e1 z\u00e1kladn\u00ed deska?<\/h3>\n\n\n\n

Pokud se stav\u00ed nov\u00e1 podlaha d\u00edlny, lze kotevn\u00ed \u0161rouby zapustit b\u011bhem lit\u00ed betonu. Pokud je instala\u010dn\u00ed prostor omezen\u00fd a hlouben\u00ed velk\u00e9 z\u00e1kladov\u00e9 j\u00e1my pro kotevn\u00ed kleci je nepraktick\u00e9, lze zv\u00e1\u017eit pou\u017eit\u00ed velk\u00e9 z\u00e1kladov\u00e9 desky.<\/p>\n\n\n\n

Pokud se bude cel\u00e1 podlaha d\u00edlny nov\u011b lila, lze p\u0159edem um\u00edstit zapu\u0161t\u011bn\u00e9 kotevn\u00ed \u0161rouby podle n\u00e1vrhu oto\u010dn\u00e9ho je\u0159\u00e1bu. To m\u016f\u017ee sn\u00ed\u017eit mno\u017estv\u00ed dodate\u010dn\u00fdch v\u00fdkopov\u00fdch prac\u00ed pot\u0159ebn\u00fdch pro samostatn\u00e9 hlubok\u00e9 z\u00e1klady.<\/p>\n\n\n\n

V oblastech, kde je n\u011bkolik stroj\u016f instalov\u00e1no bl\u00edzko sebe a je k dispozici integrovan\u00e1 \u017eelezobetonov\u00e1 podlaha nebo z\u00e1klad, m\u016f\u017ee v\u011bt\u0161\u00ed z\u00e1kladov\u00e1 deska tak\u00e9 pomoci rozlo\u017eit lok\u00e1ln\u00ed zat\u00ed\u017een\u00ed na \u0161ir\u0161\u00ed plochu.<\/p>\n\n\n\n

Jak\u00fd je rozd\u00edl mezi velkou z\u00e1kladn\u00ed deskou a zapu\u0161t\u011bnou kotevn\u00ed klec\u00ed?<\/h3>\n\n\n\n

Ob\u011b metody vy\u017eaduj\u00ed spolehliv\u00fd betonov\u00fd z\u00e1klad, ale jejich principy kotven\u00ed se li\u0161\u00ed.<\/p>\n\n\n\n

Velk\u00e1 z\u00e1kladov\u00e1 deska prim\u00e1rn\u011b rozkl\u00e1d\u00e1 zat\u00ed\u017een\u00ed na \u0161ir\u0161\u00ed z\u00e1kladovou plochu d\u00edky sv\u00e9mu v\u011bt\u0161\u00edmu rozm\u011bru a v\u00edce kotevn\u00edm bod\u016fm.<\/p>\n\n\n\n

Zapu\u0161t\u011bn\u00e1 kotevn\u00ed klec na druhou stranu vyu\u017e\u00edv\u00e1 v\u00fdztu\u017e a kotevn\u00ed \u0161rouby zapu\u0161t\u011bn\u00e9 hloub\u011bji do betonov\u00e9ho z\u00e1kladu, \u010d\u00edm\u017e vytv\u00e1\u0159\u00ed integrovan\u011bj\u0161\u00ed kotevn\u00ed syst\u00e9m. Obecn\u011b poskytuje lep\u0161\u00ed struktur\u00e1ln\u00ed integritu a odolnost v\u016f\u010di p\u0159evr\u00e1cen\u00ed.<\/p>\n\n\n\n

U vysokokapacitn\u00edch je\u0159\u00e1b\u016f, dlouh\u00fdch v\u00fdlo\u017en\u00edk\u016f, \u010dast\u00fdch zdvihac\u00edch operac\u00ed nebo aplikac\u00ed s velk\u00fdmi klopn\u00fdmi momenty by se obvykle m\u011blo nejprve posoudit pou\u017eit\u00ed z\u00e1kladov\u00e9 klece s vlo\u017een\u00fdmi kotvami, ne\u017e se pouze zv\u011bt\u0161uje velikost z\u00e1kladov\u00e9 desky.<\/p>\n\n\n\n

Z\u00e1kladn\u00ed postup instalace pro velkou z\u00e1kladn\u00ed desku<\/h3>\n\n\n\n
    \n
  • 1. Postavte betonov\u00fd z\u00e1klad<\/strong>
    Nalijte betonov\u00fd z\u00e1klad dle n\u00e1vrhu z\u00e1kladu a um\u00edst\u011bte zapu\u0161t\u011bn\u00e9 kotevn\u00ed \u0161rouby dle rozm\u00edst\u011bn\u00ed otvor\u016f v z\u00e1kladov\u00e9 desce.<\/li>\n\n\n\n
  • 2. Um\u00edst\u011bte a vyrovnejte velkou z\u00e1kladn\u00ed desku<\/strong>
    Vy\u010dist\u011bte z\u00e1kladov\u00fd povrch, zvedn\u011bte z\u00e1kladn\u00ed desku do spr\u00e1vn\u00e9 polohy, zarovnejte ji se zapu\u0161t\u011bn\u00fdmi kotevn\u00edmi \u0161rouby a upravte jej\u00ed st\u0159edovou polohu a vodorovnou polohu.<\/li>\n\n\n\n
  • 3. Ut\u00e1hn\u011bte kotevn\u00ed matice<\/strong>
    Nasa\u010fte podlo\u017eky a matice a pot\u00e9 je postupn\u011b a rovnom\u011brn\u011b utahujte v diagon\u00e1ln\u00edm po\u0159ad\u00ed.<\/li>\n\n\n\n
  • 4. Nainstalujte je\u0159\u00e1bov\u00fd sloup<\/strong>
    P\u0159ipojte z\u00e1kladnu sloupu k velk\u00e9 z\u00e1kladov\u00e9 desce, ut\u00e1hn\u011bte spojovac\u00ed \u0161rouby a zkontrolujte svisl\u00e9 vyrovn\u00e1n\u00ed sloupu.<\/li>\n\n\n\n
  • 5. Z\u00e1v\u011bre\u010dn\u00e1 kontrola a v p\u0159\u00edpad\u011b pot\u0159eby injekt\u00e1\u017e<\/strong>
    Zkontrolujte v\u0161echna spojen\u00ed, kontakt z\u00e1kladov\u00e9 desky a svislost sloupu. Pokud je v n\u00e1vrhu z\u00e1klad\u016f specifikov\u00e1na vrstva z\u00e1livky, pou\u017eijte vhodnou nesmr\u0161\u0165ovac\u00ed z\u00e1livku.<\/li>\n<\/ul>\n\n\n\n

    Obecn\u011b se nedoporu\u010duje bez specifick\u00e9ho struktur\u00e1ln\u00edho ov\u011b\u0159en\u00ed:<\/strong> Aplikace s vysokou nosnost\u00ed, dlouh\u00fdm v\u00fdlo\u017en\u00edkem, vysokou frekvenc\u00ed nebo vysok\u00fdm klopn\u00fdm momentem by se nem\u011bly spol\u00e9hat pouze na zv\u011bt\u0161enou z\u00e1kladovou desku jako n\u00e1hradu za zapu\u0161t\u011bn\u00fd z\u00e1klad bez \u0159\u00e1dn\u00fdch statick\u00fdch v\u00fdpo\u010dt\u016f.<\/p>\n\n\n\n

    Instalace chemick\u00fdch kotevn\u00edch \u0161roub\u016f: Minimalizace \u00faprav st\u00e1vaj\u00edc\u00edch podlah v d\u00edln\u011b<\/h2>\n\n\n\n
    \"\"<\/figure>\n\n\n\n

    Chemick\u00e9 kotevn\u00ed \u0161rouby se b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed u n\u011bkter\u00fdch lehk\u00fdch voln\u011b stoj\u00edc\u00edch oto\u010dn\u00fdch je\u0159\u00e1b\u016f, obvykle v rozmez\u00ed p\u0159ibli\u017en\u011b 0,25\u20131 tuny. Vhodnost v\u0161ak nelze ur\u010dit pouze na z\u00e1klad\u011b nosnosti je\u0159\u00e1bu. St\u00e1vaj\u00edc\u00ed beton je t\u0159eba tak\u00e9 zkontrolovat z hlediska pevnosti, tlou\u0161\u0165ky, v\u00fdztu\u017ee, po\u017eadovan\u00e9 hloubky kotven\u00ed, vzd\u00e1lenosti od okraje a klopn\u00e9ho momentu generovan\u00e9ho oto\u010dn\u00fdm je\u0159\u00e1bem.<\/p>\n\n\n\n

    Na rozd\u00edl od zabudovan\u00e9 kotevn\u00ed klece tato metoda nevy\u017eaduje instalaci kotev p\u0159ed lit\u00edm betonu.<\/p>\n\n\n\n

    M\u00edsto toho se do st\u00e1vaj\u00edc\u00edho betonov\u00e9ho z\u00e1kladu vyvrtaj\u00ed otvory podle vzoru z\u00e1kladov\u00e9 desky je\u0159\u00e1bu. Po d\u016fkladn\u00e9m vy\u010di\u0161t\u011bn\u00ed otvor\u016f se vst\u0159\u00edkne chemick\u00e9 kotevn\u00ed lepidlo a zavedou se z\u00e1vitov\u00e9 ty\u010de.<\/p>\n\n\n\n

    Jakmile chemick\u00fd kotevn\u00ed materi\u00e1l zcela vytvrdne a dos\u00e1hne po\u017eadovan\u00e9 pevnosti, lze instalovat je\u0159\u00e1bov\u00fd sloup.<\/p>\n\n\n\n

    Kdy jsou vhodn\u00e9 chemick\u00e9 kotevn\u00ed \u0161rouby?<\/h3>\n\n\n\n

    Pokud d\u00edlna ji\u017e m\u00e1 betonovou podlahu nebo z\u00e1klady, kter\u00e9 spl\u0148uj\u00ed konstruk\u010dn\u00ed po\u017eadavky oto\u010dn\u00e9ho je\u0159\u00e1bu, a v\u00fdkop nov\u00fdch z\u00e1klad\u016f je obt\u00ed\u017en\u00fd, lze zv\u00e1\u017eit instalaci chemick\u00fdch kotevn\u00edch \u0161roub\u016f.<\/p>\n\n\n\n

    Tato metoda je vhodn\u00e1 zejm\u00e9na pro:<\/p>\n\n\n\n

      \n
    • Modernizace st\u00e1vaj\u00edc\u00edch d\u00edlen<\/li>\n\n\n\n
    • D\u00edlny s hotov\u00fdmi betonov\u00fdmi podlahami<\/li>\n\n\n\n
    • Pracovi\u0161t\u011b, kde je obt\u00ed\u017en\u00e9 prov\u00e1d\u011bt rozs\u00e1hl\u00e9 v\u00fdkopov\u00e9 pr\u00e1ce pro z\u00e1klady<\/li>\n\n\n\n
    • Projekty vy\u017eaduj\u00edc\u00ed relativn\u011b kr\u00e1tkou dobu instalace<\/li>\n<\/ul>\n\n\n\n

      Jeho hlavn\u00edmi v\u00fdhodami jsou rychlej\u0161\u00ed instalace a men\u0161\u00ed \u00fapravy st\u00e1vaj\u00edc\u00ed podlahy nebo z\u00e1klad\u016f. To v\u0161ak neznamen\u00e1, \u017ee voln\u011b stoj\u00edc\u00ed oto\u010dn\u00fd je\u0159\u00e1b lze instalovat na jakoukoli st\u00e1vaj\u00edc\u00ed betonovou podlahu pomoc\u00ed chemick\u00fdch kotev.<\/p>\n\n\n\n

      Pokud je beton popraskan\u00fd, dut\u00fd, p\u0159\u00edli\u0161 tenk\u00fd, nezn\u00e1m\u00e9 pevnosti nebo pokud jsou po\u017eadovan\u00e9 polohy kotev p\u0159\u00edli\u0161 bl\u00edzko okraje z\u00e1kladu, je nutn\u00e9 p\u0159ehodnotit zp\u016fsob instalace.<\/p>\n\n\n\n

      Z\u00e1kladn\u00ed postup instalace chemick\u00fdch kotev<\/h3>\n\n\n\n
        \n
      • 1. Ozna\u010dte si polohy kotev podle otvor\u016f v z\u00e1kladov\u00e9 desce sloupu.<\/li>\n\n\n\n
      • 2. Vyvrtejte otvory o dan\u00e9m pr\u016fm\u011bru a hloubce.<\/li>\n\n\n\n
      • 3. D\u016fkladn\u011b odstra\u0148te prach a ne\u010distoty z otvor\u016f.<\/li>\n\n\n\n
      • 4. Vst\u0159\u00edkn\u011bte stanoven\u00e9 mno\u017estv\u00ed chemick\u00e9ho kotevn\u00edho lepidla.<\/li>\n\n\n\n
      • 5. Vlo\u017ete z\u00e1vitov\u00e9 ty\u010de a nechte lepidlo zcela vytvrdnout.<\/li>\n\n\n\n
      • 6. Nainstalujte z\u00e1kladnu sloupku, podlo\u017eky a matice.<\/li>\n\n\n\n
      • 7. Upravte svislost sloupu a ut\u00e1hn\u011bte kotvy dle zadan\u00fdch po\u017eadavk\u016f.<\/li>\n<\/ul>\n\n\n\n

        Mezi t\u011bmito kroky jsou pro v\u00fdkon kotvy obzvl\u00e1\u0161t\u011b d\u016fle\u017eit\u00e9 hloubka vrt\u00e1n\u00ed, \u010di\u0161t\u011bn\u00ed otvoru a doba vytvrzov\u00e1n\u00ed. Nadm\u011brn\u00e9 mno\u017estv\u00ed prachu uvnit\u0159 otvor\u016f, nedostate\u010dn\u00e9 mno\u017estv\u00ed kotevn\u00edho lepidla nebo zat\u00ed\u017een\u00ed kotev p\u0159ed \u00fapln\u00fdm vytvrzen\u00edm m\u016f\u017ee v\u00fdrazn\u011b sn\u00ed\u017eit v\u00fdkon kotven\u00ed.<\/p>\n\n\n\n

        Obecn\u011b se nedoporu\u010duje:<\/strong> Pokud nelze potvrdit tlou\u0161\u0165ku, pevnost, v\u00fdztu\u017e nebo celkov\u00fd stav st\u00e1vaj\u00edc\u00edho betonu, nebo pokud beton vykazuje zna\u010dn\u00e9 trhliny, dutiny nebo struktur\u00e1ln\u00ed po\u0161kozen\u00ed, nem\u011bly by se chemick\u00e9 kotvy vyb\u00edrat pouze na z\u00e1klad\u011b nosnosti je\u0159\u00e1bu.<\/p>\n\n\n\n

        Z\u00e1klad s kotevn\u00edmi klecemi: Vhodn\u00e9 pro dlouhodob\u00e9 a n\u00e1ro\u010dn\u00e9 aplikace<\/h2>\n\n\n\n
        \"\"<\/figure>\n\n\n\n

        Zapu\u0161t\u011bn\u00e1 kotevn\u00ed klec je jedn\u00edm z nejb\u011b\u017en\u011bj\u0161\u00edch \u0159e\u0161en\u00ed z\u00e1klad\u016f pro voln\u011b stoj\u00edc\u00ed oto\u010dn\u00fd je\u0159\u00e1b. M\u016f\u017ee b\u00fdt pou\u017eita v \u0161irok\u00e9 \u0161k\u00e1le aplikac\u00ed od mal\u00fdch a st\u0159edn\u00edch nosnost\u00ed a\u017e po relativn\u011b t\u011b\u017ek\u00e9 je\u0159\u00e1by s typick\u00fdm referen\u010dn\u00edm rozsahem p\u0159ibli\u017en\u011b 0,5\u20135 tun.<\/p>\n\n\n\n

        Pro dlouh\u00e1 ramena v\u00fdlo\u017en\u00edku, vy\u0161\u0161\u00ed nosnosti, \u010dast\u00e9 zdvihac\u00ed operace nebo aplikace s velk\u00fdmi klopn\u00fdmi momenty se t\u00e9to metod\u011b zakl\u00e1d\u00e1n\u00ed \u010dasto d\u00e1v\u00e1 p\u0159ednost.<\/p>\n\n\n\n

        Zapu\u0161t\u011bn\u00e1 instalace vy\u017eaduje vykop\u00e1n\u00ed z\u00e1kladov\u00e9 j\u00e1my. V\u00fdztu\u017e, kotevn\u00ed \u0161rouby a polohovac\u00ed prvky se instaluj\u00ed do z\u00e1klad\u016f p\u0159ed nalit\u00edm betonu.<\/p>\n\n\n\n

        Pot\u00e9, co beton dos\u00e1hne stanoven\u00e9 pevnosti v tahu, se z\u00e1kladna je\u0159\u00e1bov\u00e9ho sloupu namontuje na zapu\u0161t\u011bn\u00e9 kotevn\u00ed \u0161rouby.<\/p>\n\n\n\n

        Kdy je vhodn\u00e1 zapu\u0161t\u011bn\u00e1 kotevn\u00ed klec?<\/h3>\n\n\n\n

        Zapu\u0161t\u011bn\u00e1 kotevn\u00ed klec je vhodn\u00e1 zejm\u00e9na pro nov\u00e9 d\u00edlny nebo projekty, kde stavebn\u00ed pr\u00e1ce st\u00e1le prob\u00edhaj\u00ed.<\/p>\n\n\n\n

        Pokud je um\u00edst\u011bn\u00ed voln\u011b stoj\u00edc\u00edho oto\u010dn\u00e9ho je\u0159\u00e1bu a hlavn\u00ed technick\u00e9 parametry ur\u010deno b\u011bhem f\u00e1ze v\u00fdstavby d\u00edlny, lze z\u00e1klady a kotevn\u00ed klec navrhnout a nainstalovat p\u0159edem. To pom\u00e1h\u00e1 minimalizovat pozd\u011bj\u0161\u00ed \u00fapravy hotov\u00e9 podlahy d\u00edlny.<\/p>\n\n\n\n

        U zapu\u0161t\u011bn\u00e9ho z\u00e1kladu by se obecn\u011b m\u011bla v\u011bnovat v\u011bt\u0161\u00ed pozornost:<\/p>\n\n\n\n

          \n
        • Trval\u00e1 pracovn\u00ed m\u00edsta<\/li>\n\n\n\n
        • V\u00fdklopn\u00e9 je\u0159\u00e1by s vy\u0161\u0161\u00ed kapacitou<\/li>\n\n\n\n
        • Del\u0161\u00ed ramena v\u00fdlo\u017en\u00edku<\/li>\n\n\n\n
        • Vysokofrekven\u010dn\u00ed zdvihac\u00ed operace<\/li>\n\n\n\n
        • Aplikace s v\u00fdznamn\u00fdm dynamick\u00fdm zat\u00ed\u017een\u00edm<\/li>\n\n\n\n
        • Projekty vy\u017eaduj\u00edc\u00ed v\u011bt\u0161\u00ed integritu z\u00e1klad\u016f a odolnost proti p\u0159evr\u00e1cen\u00ed<\/li>\n<\/ul>\n\n\n\n

          Ve srovn\u00e1n\u00ed s chemick\u00fdmi kotvami a spoji s velk\u00fdmi z\u00e1kladov\u00fdmi deskami p\u0159en\u00e1\u0161\u00ed zabudovan\u00e1 kotevn\u00ed klec zat\u00ed\u017een\u00ed a klopn\u00fd moment generovan\u00fd je\u0159\u00e1bov\u00fdm sloupem do v\u011bt\u0161\u00edho betonov\u00e9ho z\u00e1kladu, \u010d\u00edm\u017e vznik\u00e1 integrovan\u011bj\u0161\u00ed kotevn\u00ed syst\u00e9m.<\/p>\n\n\n\n

          Z\u00e1kladn\u00ed postup instalace zabudovan\u00e9 kotevn\u00ed klece<\/h3>\n\n\n\n
            \n
          • 1. Vykopejte z\u00e1klady dle zadan\u00fdch rozm\u011br\u016f.<\/li>\n\n\n\n
          • 2. Vyrobte kotevn\u00ed klec a p\u0159esn\u011b um\u00edst\u011bte kotevn\u00ed \u0161rouby.<\/li>\n\n\n\n
          • 3. Zajist\u011bte kotevn\u00ed klec, aby se zabr\u00e1nilo jej\u00edmu pohybu b\u011bhem lit\u00ed betonu.<\/li>\n\n\n\n
          • 4. Nalijte beton a \u0159\u00e1dn\u011b ho vibrujte.<\/li>\n\n\n\n
          • 5. Nechte beton vytvrdnout dle stanoven\u00fdch po\u017eadavk\u016f.<\/li>\n\n\n\n
          • 6. Je\u0159\u00e1bov\u00fd sloup nainstalujte pot\u00e9, co z\u00e1klad dos\u00e1hne po\u017eadovan\u00e9 mont\u00e1\u017en\u00ed pevnosti.<\/li>\n\n\n\n
          • 7. Upravte svislost sloupku a ut\u00e1hn\u011bte kotevn\u00ed matice.<\/li>\n<\/ul>\n\n\n\n

            B\u011bhem v\u00fdstavby je t\u0159eba v\u011bnovat zvl\u00e1\u0161tn\u00ed pozornost poloze, rozte\u010di, svislosti a odkryt\u00e9 d\u00e9lce kotevn\u00edch \u0161roub\u016f. Pokud nen\u00ed kotevn\u00ed klec \u0159\u00e1dn\u011b zaji\u0161t\u011bna, lit\u00ed betonu a vibrace mohou zp\u016fsobit posun kotevn\u00edch \u0161roub\u016f, co\u017e zt\u00ed\u017e\u00ed nebo znemo\u017en\u00ed vyrovn\u00e1n\u00ed z\u00e1kladov\u00e9 desky je\u0159\u00e1bu b\u011bhem instalace.<\/p>\n\n\n\n

            Omezen\u00ed, kter\u00e1 je t\u0159eba zv\u00e1\u017eit:<\/strong> P\u0159esto\u017ee zapu\u0161t\u011bn\u00e1 kotevn\u00ed klec zaji\u0161\u0165uje vynikaj\u00edc\u00ed integritu z\u00e1klad\u016f, vy\u017eaduje v\u00fdkopov\u00e9 pr\u00e1ce, armovac\u00ed pr\u00e1ce, lit\u00ed betonu a vytvrzov\u00e1n\u00ed. Doba stavebn\u00edch prac\u00ed a instalace je proto obecn\u011b del\u0161\u00ed ne\u017e u ostatn\u00edch dvou metod.<\/p>\n\n\n\n

            Jak si vybrat mezi t\u0159emi metodami zalo\u017een\u00ed voln\u011b stoj\u00edc\u00edho oto\u010dn\u00e9ho je\u0159\u00e1bu<\/h2>\n\n\n\n

            N\u00ed\u017ee uveden\u00e9 rozsahy \u00fanosnosti jsou ur\u010deny pouze pro p\u0159edb\u011b\u017enou informaci a nem\u011bly by b\u00fdt pova\u017eov\u00e1ny za normy pro n\u00e1vrh z\u00e1klad\u016f.<\/p>\n\n\n\n

            Zp\u016fsob instalace<\/strong><\/td>Referen\u010dn\u00ed kapacita<\/strong><\/td>Vhodn\u011bj\u0161\u00ed podm\u00ednky na stanovi\u0161ti<\/strong><\/td>Hlavn\u00ed charakteristiky<\/strong><\/td><\/tr>
            Chemick\u00e9 kotevn\u00ed \u0161rouby<\/td>0,25\u20131 tuna<\/td>St\u00e1vaj\u00edc\u00ed betonov\u00e9 podlahy, modernizace d\u00edlen, m\u00edsta s obt\u00ed\u017en\u00fdmi v\u00fdkopov\u00fdmi pracemi<\/td>Rychl\u00e1 instalace a minim\u00e1ln\u00ed \u00fapravy, ale vysoce z\u00e1visl\u00e9 na st\u00e1vaj\u00edc\u00edch betonov\u00fdch podm\u00ednk\u00e1ch<\/td><\/tr>
            Velk\u00e1 z\u00e1kladn\u00ed deska<\/td>1\u20133 tuny<\/td>Nov\u00e9 betonov\u00e9 podlahy, omezen\u00fd v\u00fdkopov\u00fd prostor, kotevn\u00ed \u0161rouby lze um\u00edstit p\u0159edem<\/td>V\u011bt\u0161\u00ed plocha rozlo\u017een\u00ed zat\u00ed\u017een\u00ed a sn\u00ed\u017een\u00e1 pot\u0159eba hlubok\u00e9ho v\u00fdkopu z\u00e1klad\u016f<\/td><\/tr>
            Vestav\u011bn\u00e1 kotevn\u00ed klec<\/td>0,5\u20135 tun<\/td>Nov\u00e9 d\u00edlny, trval\u00e9 instalace, zved\u00e1n\u00ed t\u011b\u017ek\u00fdch b\u0159emen nebo \u010dast\u00e9 zved\u00e1n\u00ed<\/td>Lep\u0161\u00ed struktur\u00e1ln\u00ed integrita a odolnost proti p\u0159evr\u00e1cen\u00ed, ale vy\u017eaduje v\u00edce stavebn\u00edch prac\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

            D\u016fle\u017eit\u00e9:<\/strong> I kdy\u017e dva voln\u011b stoj\u00edc\u00ed oto\u010dn\u00e9 je\u0159\u00e1by maj\u00ed naprosto stejnou jmenovitou nosnost, rozd\u00edly v d\u00e9lce v\u00fdlo\u017en\u00edku, v\u00fd\u0161ce zdvihu a provozn\u00edch podm\u00ednk\u00e1ch mohou v\u00e9st k r\u016fzn\u00fdm zat\u00ed\u017een\u00edm z\u00e1klad\u016f. Kone\u010dn\u00e1 metoda z\u00e1klad\u016f by proto nikdy nem\u011bla b\u00fdt vyb\u00edr\u00e1na pouze podle v\u00fd\u0161e uveden\u00fdch rozsah\u016f nosnost\u00ed.<\/p>\n\n\n\n

            Jednoduch\u00fd pr\u016fvodce p\u0159edb\u011b\u017en\u00fdm v\u00fdb\u011brem<\/h3>\n\n\n\n

            St\u00e1vaj\u00edc\u00ed betonov\u00e1 podlaha a v\u00fdkopov\u00e9 pr\u00e1ce jsou obt\u00ed\u017en\u00e9<\/strong>
            \u2192 Nejprve ov\u011b\u0159te st\u00e1vaj\u00edc\u00ed stav betonu. U lehk\u00fdch je\u0159\u00e1b\u016f lze posoudit chemick\u00e9 kotevn\u00ed \u0161rouby.<\/p>\n\n\n\n

            Nov\u00e1 betonov\u00e1 podlaha: kotevn\u00ed \u0161rouby lze um\u00edstit p\u0159edem, ale hlubok\u00fd v\u00fdkop je omezen\u00fd<\/strong>
            \u2192 M\u016f\u017ee b\u00fdt vyhodnocena instalace velk\u00e9 z\u00e1kladn\u00ed desky.<\/p>\n\n\n\n

            Nov\u00e1 d\u00edlna, trval\u00fd provoz, vy\u0161\u0161\u00ed nosnost, dlouh\u00e9 rameno nebo \u010dast\u00e9 zved\u00e1n\u00ed<\/strong>
            \u2192 Obecn\u011b se up\u0159ednost\u0148uje z\u00e1klad s vno\u0159enou kotevn\u00ed klec\u00ed.<\/p>\n\n\n\n

            Tyto pokyny jsou ur\u010deny pouze pro p\u0159edb\u011b\u017en\u00fd v\u00fdb\u011br. Kone\u010dn\u00fd n\u00e1vrh z\u00e1klad\u016f by m\u011bl b\u00fdt v\u017edy potvrzen podle parametr\u016f je\u0159\u00e1bu a skute\u010dn\u00fdch podm\u00ednek na m\u00edst\u011b.<\/p>\n\n\n\n

            Pro\u010d by nem\u011bl b\u00fdt z\u00e1klad vybr\u00e1n pouze podle nosnosti je\u0159\u00e1bu?<\/h2>\n\n\n\n

            Toto je jeden z nej\u010dast\u011bji p\u0159ehl\u00ed\u017een\u00fdch aspekt\u016f konstrukce z\u00e1klad\u016f voln\u011b stoj\u00edc\u00edch oto\u010dn\u00fdch je\u0159\u00e1b\u016f.<\/p>\n\n\n\n

            Uva\u017eujme nap\u0159\u00edklad dva oto\u010dn\u00e9 je\u0159\u00e1by, oba s nosnost\u00ed 1 tuny. Jeden m\u00e1 2metrov\u00e9 rameno, zat\u00edmco druh\u00fd m\u00e1 6metrov\u00e9 rameno.<\/p>\n\n\n\n

            Kdy\u017e zat\u00ed\u017een\u00ed dos\u00e1hne vn\u011bj\u0161\u00edho konce v\u00fdlo\u017en\u00edku, m\u016f\u017ee se p\u0159eklopn\u00fd \u00fa\u010dinek p\u016fsob\u00edc\u00ed na z\u00e1klad sloupu u obou je\u0159\u00e1b\u016f v\u00fdrazn\u011b li\u0161it.<\/p>\n\n\n\n

            Proto je pro ur\u010den\u00ed, zda je metoda zakl\u00e1d\u00e1n\u00ed vhodn\u00e1, nutn\u00e9 zv\u00e1\u017eit alespo\u0148 n\u00e1sleduj\u00edc\u00ed faktory:<\/p>\n\n\n\n

              \n
            • Jmenovit\u00e1 nosnost<\/li>\n\n\n\n
            • D\u00e9lka v\u00fdlo\u017en\u00edku<\/li>\n\n\n\n
            • V\u00fd\u0161ka zdvihu<\/li>\n\n\n\n
            • Vlastn\u00ed hmotnost je\u0159\u00e1bu<\/li>\n\n\n\n
            • T\u0159\u00edda provozu a provozn\u00ed frekvence<\/li>\n\n\n\n
            • Dynamick\u00e9 zat\u00ed\u017een\u00ed<\/li>\n\n\n\n
            • Podm\u00ednky z\u00e1klad\u016f a betonu<\/li>\n<\/ul>\n\n\n\n

              Proto se v\u00fdrobce oto\u010dn\u00fdch je\u0159\u00e1b\u016f obvykle p\u0159ed potvrzen\u00edm instala\u010dn\u00edho \u0159e\u0161en\u00ed zept\u00e1 nejen na \u201eJakou nosnost pot\u0159ebujete?\u201c, ale tak\u00e9 na po\u017eadovanou d\u00e9lku v\u00fdlo\u017en\u00edku a podm\u00ednky z\u00e1klad\u016f staveni\u0161t\u011b.<\/p>\n\n\n\n

              Jak\u00e9 informace jsou pot\u0159eba p\u0159ed instalac\u00ed voln\u011b stoj\u00edc\u00edho oto\u010dn\u00e9ho je\u0159\u00e1bu?<\/h2>\n\n\n\n

              Pokud si nejste jisti, zda by v\u00e1\u0161 projekt m\u011bl pou\u017e\u00edt chemick\u00e9 kotvy, velkou z\u00e1kladovou desku nebo zabudovanou kotevn\u00ed klec, nedoporu\u010duje se rozhodovat pouze na z\u00e1klad\u011b nosnosti je\u0159\u00e1bu.<\/p>\n\n\n\n

              P\u0159ed v\u00fdb\u011brem z\u00e1kladov\u00e9ho \u0159e\u0161en\u00ed si p\u0159ipravte n\u00e1sleduj\u00edc\u00ed informace:<\/p>\n\n\n\n

                \n
              • 1. Jmenovit\u00e1 nosnost<\/strong>
                Nap\u0159\u00edklad: 500 kg, 1 tuna, 2 tuny nebo 5 tun.<\/li>\n\n\n\n
              • 2. D\u00e9lka v\u00fdlo\u017en\u00edku \/ pracovn\u00ed polom\u011br<\/strong>
                Vzd\u00e1lenost od st\u0159edu sloupu je\u0159\u00e1bu k vn\u011bj\u0161\u00edmu konci efektivn\u00ed pracovn\u00ed plochy.<\/li>\n\n\n\n
              • 3. Po\u017eadovan\u00e1 v\u00fd\u0161ka zdvihu<\/strong>
                Efektivn\u00ed vertik\u00e1ln\u00ed v\u00fd\u0161ka zdvihu po\u017eadovan\u00e1 od \u00farovn\u011b podlahy k h\u00e1ku.<\/li>\n\n\n\n
              • 4. St\u00e1vaj\u00edc\u00ed z\u00e1kladov\u00e9 podm\u00ednky<\/strong>
                To zahrnuje tlou\u0161\u0165ku betonu, pevnost a v\u00fdztu\u017e. V p\u0159\u00edpad\u011b nov\u00e9 d\u00edlny uve\u010fte pl\u00e1novan\u00e9 z\u00e1kladov\u00e9 podm\u00ednky, pokud jsou k dispozici.<\/li>\n\n\n\n
              • 5. Fotografie nebo v\u00fdkresy m\u00edsta instalace<\/strong>
                Fotografie staveni\u0161t\u011b, dispozice d\u00edlen a z\u00e1kladov\u00e9 v\u00fdkresy mohou pomoci ur\u010dit dostupn\u00fd stavebn\u00ed prostor a identifikovat okoln\u00ed konstrukce, kter\u00e9 by mohly ovlivnit instalaci.<\/li>\n<\/ul>\n\n\n\n

                Na z\u00e1klad\u011b t\u011bchto informac\u00ed lze d\u00e1le vyhodnotit zat\u00ed\u017een\u00ed a klopn\u00fd moment p\u016fsob\u00edc\u00ed na z\u00e1klad, co\u017e umo\u017e\u0148uje v\u00fdb\u011br vhodn\u011bj\u0161\u00edho z\u00e1kladu a zp\u016fsobu kotven\u00ed.<\/p>\n\n\n\n

                Pro t\u011b\u017ek\u00e1 b\u0159emena s dlouh\u00fdm v\u00fdlo\u017en\u00edkem, vysokofrekven\u010dn\u00ed zved\u00e1n\u00ed nebo projekty se slo\u017eit\u00fdmi z\u00e1kladov\u00fdmi podm\u00ednkami by m\u011bl b\u00fdt z\u00e1klad specificky navr\u017een a konstruk\u010dn\u011b ov\u011b\u0159en podle skute\u010dn\u00fdch parametr\u016f je\u0159\u00e1bu, sp\u00ed\u0161e ne\u017e pomoc\u00ed generick\u00fdch z\u00e1kladov\u00fdch rozm\u011br\u016f.<\/p>\n\n\n\n

                Pouze tehdy, kdy\u017e betonov\u00fd z\u00e1klad, kotevn\u00ed syst\u00e9m, z\u00e1kladna sloupu a konstrukce voln\u011b stoj\u00edc\u00edho oto\u010dn\u00e9ho je\u0159\u00e1bu tvo\u0159\u00ed spr\u00e1vn\u011b navr\u017een\u00fd a bezpe\u010dn\u011b propojen\u00fd syst\u00e9m, m\u016f\u017ee je\u0159\u00e1b dlouhodob\u011b fungovat bezpe\u010dn\u011b, spolehliv\u011b a konzistentn\u011b.<\/p>","protected":false},"excerpt":{"rendered":"Whether a freestanding jib crane is installed securely affects not only its normal operation but also lifting safety and long-term service life. During operation, a load positioned near the end of the jib arm creates a significant overturning moment on the crane column and foundation. Even when two jib cranes have the same rated lifting […]","protected":false},"featured_media":3614,"parent":0,"menu_order":0,"template":"","posts_category":[46],"posts_tag":[129,130],"class_list":["post-3613","posts","type-posts","status-publish","has-post-thumbnail","hentry","posts_category-blogs","posts_tag-freestanding-jib-crane","posts_tag-freestanding-jib-crane-installation"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.zkhoist.com\/cs\/wp-json\/wp\/v2\/xmxposts\/3613"}],"collection":[{"href":"https:\/\/www.zkhoist.com\/cs\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.zkhoist.com\/cs\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":4,"href":"https:\/\/www.zkhoist.com\/cs\/wp-json\/wp\/v2\/xmxposts\/3613\/revisions"}],"predecessor-version":[{"id":3621,"href":"https:\/\/www.zkhoist.com\/cs\/wp-json\/wp\/v2\/xmxposts\/3613\/revisions\/3621"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zkhoist.com\/cs\/wp-json\/wp\/v2\/media\/3614"}],"wp:attachment":[{"href":"https:\/\/www.zkhoist.com\/cs\/wp-json\/wp\/v2\/media?parent=3613"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.zkhoist.com\/cs\/wp-json\/wp\/v2\/posts_category?post=3613"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.zkhoist.com\/cs\/wp-json\/wp\/v2\/posts_tag?post=3613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}