{"id":15941,"date":"2026-08-17T02:02:59","date_gmt":"2026-08-17T02:02:59","guid":{"rendered":"https:\/\/www.hndfcrane.com\/?post_type=posts&#038;p=15941"},"modified":"2026-08-17T02:03:02","modified_gmt":"2026-08-17T02:03:02","slug":"overhead-crane-girder-web-crack-analysis","status":"publish","type":"posts","link":"https:\/\/www.hndfcrane.com\/cs\/posts\/overhead-crane-girder-web-crack-analysis\/","title":{"rendered":"Anal\u00fdza trhlin na stojin\u011b nosn\u00edku mostov\u00e9ho je\u0159\u00e1bu: P\u0159\u00ed\u010diny a \u0159e\u0161en\u00ed"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>Obsah<\/p><nav><ul><li><a href=\"#1-root-causes-of-overhead-crane-girder-web-cracking\">1. Z\u00e1kladn\u00ed p\u0159\u00ed\u010diny prask\u00e1n\u00ed stojiny nosn\u00edku mostov\u00e9ho je\u0159\u00e1bu<\/a><ul><li><a href=\"#1-1-stress-concentration\">1.1 Koncentrace nap\u011bt\u00ed<\/a><\/li><li><a href=\"#1-2-welding-quality\">1.2 Kvalita sva\u0159ov\u00e1n\u00ed<\/a><\/li><li><a href=\"#1-3-material-defects\">1.3 Vady materi\u00e1lu<\/a><\/li><li><a href=\"#1-4-fatigue-loading\">1.4 \u00danavov\u00e9 zat\u00ed\u017een\u00ed<\/a><\/li><li><a href=\"#1-5-design-deficiencies\">1.5 Nedostatky v n\u00e1vrhu<\/a><\/li><li><a href=\"#1-6-overloading-and-improper-use\">1.6 P\u0159et\u00ed\u017een\u00ed a nespr\u00e1vn\u00e9 pou\u017eit\u00ed<\/a><\/li><li><a href=\"#1-7-vibration-and-impact\">1.7 Vibrace a n\u00e1razy<\/a><\/li><\/ul><\/li><li><a href=\"#2-solutions-for-overhead-crane-girder-web-cracking\">2. \u0158e\u0161en\u00ed pro prask\u00e1n\u00ed stojiny nosn\u00edk\u016f mostov\u00e9ho je\u0159\u00e1bu<\/a><ul><li><a href=\"#2-1-improve-structural-design\">2.1 Zlep\u0161en\u00ed konstruk\u010dn\u00edho n\u00e1vrhu<\/a><\/li><li><a href=\"#2-2-improve-welding-quality\">2.2 Zlep\u0161en\u00ed kvality sva\u0159ov\u00e1n\u00ed<\/a><\/li><li><a href=\"#2-3-ensure-material-quality\">2.3 Zaji\u0161t\u011bn\u00ed kvality materi\u00e1lu<\/a><\/li><li><a href=\"#2-4-operate-equipment-properly\">2.4 Spr\u00e1vn\u00e9 pou\u017e\u00edv\u00e1n\u00ed za\u0159\u00edzen\u00ed<\/a><\/li><li><a href=\"#2-5-perform-regular-maintenance-and-inspection\">2.5 Prov\u00e1d\u011bjte pravidelnou \u00fadr\u017ebu a kontrolu<\/a><\/li><\/ul><\/li><li><a href=\"#conclusion\">Z\u00e1v\u011br<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>Prask\u00e1n\u00ed stojiny v oblasti prom\u011bnn\u00e9ho pr\u016f\u0159ezu na konci hlavn\u00edho nosn\u00edku je u mostov\u00fdch je\u0159\u00e1b\u016f b\u011bhem dlouhodob\u00e9ho provozu b\u011b\u017en\u00fdm a z\u00e1va\u017en\u00fdm probl\u00e9mem. Pochopen\u00ed p\u0159\u00ed\u010din vzniku trhlin je nezbytn\u00e9 pro prevenci a \u0159e\u0161en\u00ed. N\u00e1sleduje anal\u00fdza p\u0159\u00ed\u010din prask\u00e1n\u00ed stojiny v oblasti prom\u011bnn\u00e9ho pr\u016f\u0159ezu na konci hlavn\u00edho nosn\u00edku mostov\u00e9ho je\u0159\u00e1bu.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2422\" height=\"1614\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Main-girder-end-web-crack.png\" alt=\"\" class=\"wp-image-15933\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Main-girder-end-web-crack.png 2422w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Main-girder-end-web-crack-1536x1024.png 1536w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Main-girder-end-web-crack-2048x1365.png 2048w\" sizes=\"(max-width: 2422px) 100vw, 2422px\" \/><figcaption class=\"wp-element-caption\">Trhlina na konci stojiny hlavn\u00edho nosn\u00edku: trhlina se objevuje v rohu prom\u011bnn\u00e9ho pr\u016f\u0159ezu, kde se spojuje hlavn\u00ed nosn\u00edk a koncov\u00fd voz\u00edk.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-root-causes-of-overhead-crane-girder-web-cracking\">1. Z\u00e1kladn\u00ed p\u0159\u00ed\u010diny prask\u00e1n\u00ed stojiny nosn\u00edku mostov\u00e9ho je\u0159\u00e1bu<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-1-stress-concentration\">1.1 Koncentrace nap\u011bt\u00ed<\/h3>\n\n\n\n<p>Aby byly spln\u011bny rozm\u011brov\u00e9 po\u017eadavky a tak\u00e9 po\u017eadavky na pevnost a tuhost za r\u016fzn\u00fdch provozn\u00edch podm\u00ednek, je konec hlavn\u00edho nosn\u00edku \u010dasto navr\u017een s prom\u011bnn\u00fdm pr\u016f\u0159ezem. Geometrick\u00e1 diskontinuita v m\u00edst\u011b zm\u011bny pr\u016f\u0159ezu v\u0161ak vytv\u00e1\u0159\u00ed koncentraci nap\u011bt\u00ed, co\u017e znamen\u00e1, \u017ee nap\u011bt\u00ed v prom\u011bnn\u00e9m pr\u016f\u0159ezu je v\u00fdrazn\u011b vy\u0161\u0161\u00ed ne\u017e v jin\u00fdch oblastech. Z\u00f3ny koncentrace nap\u011bt\u00ed jsou n\u00e1chyln\u00e9 ke vzniku a \u0161\u00ed\u0159en\u00ed trhlin. Nap\u0159\u00edklad mechanick\u00e1 anal\u00fdza mostov\u00e9ho je\u0159\u00e1bu ukazuje, \u017ee ekvivalentn\u00ed nap\u011b\u0165ov\u00e1 kontura vykazuje v prom\u011bnn\u00e9m pr\u016f\u0159ezu znateln\u011b vy\u0161\u0161\u00ed nap\u011bt\u00ed ne\u017e jinde.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1035\" height=\"690\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Equivalent-stress-contour-of-an-overhead-crane.png\" alt=\"\" class=\"wp-image-15938\"\/><\/figure>\n\n\n\n<p>V\u00fd\u0161e analyzovan\u00fd produkt se vyzna\u010duje \u0161ikm\u00fdm p\u0159echodem v prom\u011bnn\u00e9m pr\u016f\u0159ezu, zat\u00edmco konstrukce v tomto p\u0159\u00edpad\u011b pou\u017e\u00edv\u00e1 pravo\u00fahl\u00fd p\u0159echod, co\u017e vytv\u00e1\u0159\u00ed je\u0161t\u011b z\u00e1va\u017en\u011bj\u0161\u00ed podm\u00ednky koncentrace nap\u011bt\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-2-welding-quality\">1.2 Kvalita sva\u0159ov\u00e1n\u00ed<\/h3>\n\n\n\n<p>Kvalita sva\u0159ov\u00e1n\u00ed p\u0159\u00edmo ovliv\u0148uje bezpe\u010dnost a \u017eivotnost konstrukce. Nespr\u00e1vn\u00e9 sva\u0159ovac\u00ed operace mohou snadno zp\u016fsobit vady, jako je p\u00f3rovitost, struskov\u00e9 vm\u011bstky, ne\u00fapln\u00e9 prova\u0159en\u00ed a trhliny ve svarech. Tyto vady funguj\u00ed jako body koncentrace nap\u011bt\u00ed a snadno se st\u00e1vaj\u00ed m\u00edsty vzniku trhlin p\u0159i vn\u011bj\u0161\u00edm zat\u00ed\u017een\u00ed. Probl\u00e9my s kvalitou sva\u0159ov\u00e1n\u00ed se s v\u011bt\u0161\u00ed pravd\u011bpodobnost\u00ed vyskytnou u prom\u011bnn\u00fdch pr\u016f\u0159ez\u016f kv\u016fli slo\u017eitosti geometrie svaru. V tomto p\u0159\u00edpad\u011b je obt\u00ed\u017en\u00e9 zaru\u010dit kvalitu svaru v prav\u00e9m rohu svaru s prom\u011bnn\u00fdm pr\u016f\u0159ezem.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-3-material-defects\">1.3 Vady materi\u00e1lu<\/h3>\n\n\n\n<p>Vnit\u0159n\u00ed vady, jako jsou nekovov\u00e9 vm\u011bstky, p\u00f3rovitost a mikrotrhliny, se mohou v oceli vyskytovat v d\u016fsledku procesn\u00edch probl\u00e9m\u016f b\u011bhem v\u00fdroby. Tyto vady maj\u00ed tendenci se pod nap\u011bt\u00edm \u0161\u00ed\u0159it a vyv\u00edjet se do viditeln\u00fdch trhlin. Krom\u011b toho mohou rozd\u00edly ve vlastnostech materi\u00e1lu mezi r\u016fzn\u00fdmi \u0161ar\u017eemi zp\u016fsobit lokalizovanou koncentraci nap\u011bt\u00ed, kter\u00e1 m\u016f\u017ee potenci\u00e1ln\u011b iniciovat vznik trhlin. Informace o materi\u00e1lu nejsou v tomto p\u0159\u00edpad\u011b k dispozici, tak\u017ee nelze vylou\u010dit vady materi\u00e1lu jako p\u0159isp\u00edvaj\u00edc\u00ed faktor.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-4-fatigue-loading\">1.4 \u00danavov\u00e9 zat\u00ed\u017een\u00ed<\/h3>\n\n\n\n<p>Mostov\u00e9 je\u0159\u00e1by jsou b\u011bhem provozu \u010dasto vystaveny opakovan\u00e9mu dynamick\u00e9mu zat\u00ed\u017een\u00ed. Prom\u011bnn\u00fd pr\u016f\u0159ez hlavn\u00edho nosn\u00edku je vystaven cyklick\u00fdm zm\u011bn\u00e1m nap\u011bt\u00ed, zejm\u00e9na p\u0159i zved\u00e1n\u00ed b\u0159emen. Toto opakovan\u00e9 cyklov\u00e1n\u00ed nap\u011bt\u00ed vede k \u00fanavov\u00e9mu poru\u0161en\u00ed materi\u00e1lu \u2013 \u00fanavov\u00e9 trhliny se mohou vyvinout i po del\u0161\u00ed dob\u011b provozu, i kdy\u017e \u00farovn\u011b nap\u011bt\u00ed z\u016fst\u00e1vaj\u00ed pod mez\u00ed kluzu materi\u00e1lu. Prom\u011bnn\u00fd pr\u016f\u0159ez je n\u00e1chyln\u011bj\u0161\u00ed k prask\u00e1n\u00ed v d\u016fsledku kombinovan\u00e9ho \u00fa\u010dinku koncentrace nap\u011bt\u00ed a \u00fanavy materi\u00e1lu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-5-design-deficiencies\">1.5 Nedostatky v n\u00e1vrhu<\/h3>\n\n\n\n<p>Mezi konstruk\u010dn\u00ed faktory, kter\u00e9 zvy\u0161uj\u00ed riziko vzniku trhlin, pat\u0159\u00ed n\u00e1hl\u00e9 p\u0159echody pr\u016f\u0159ez\u016f bez plynul\u00e9ho tvarov\u00e1n\u00ed, nedostate\u010dn\u00e9 zohledn\u011bn\u00ed \u00fa\u010dink\u016f koncentrace nap\u011bt\u00ed a zanedb\u00e1n\u00ed konstruk\u010dn\u00edch aspekt\u016f \u00fanavy materi\u00e1lu. Vynech\u00e1n\u00ed v\u00fdztu\u017ee u prom\u011bnn\u00e9ho pr\u016f\u0159ezu b\u011bhem f\u00e1ze n\u00e1vrhu m\u016f\u017ee tak\u00e9 v\u00e9st k vzniku trhlin p\u0159i dlouhodob\u00e9m provozu. Spr\u00e1vn\u00fd n\u00e1vrh proto hraje d\u016fle\u017eitou roli p\u0159i sni\u017eov\u00e1n\u00ed tvorby trhlin. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-6-overloading-and-improper-use\">1.6 P\u0159et\u00ed\u017een\u00ed a nespr\u00e1vn\u00e9 pou\u017eit\u00ed<\/h3>\n\n\n\n<p>P\u0159esto\u017ee jsou je\u0159\u00e1by navr\u017eeny s ur\u010ditou bezpe\u010dnostn\u00ed rezervou podle platn\u00fdch norem, p\u0159et\u00ed\u017een\u00ed a \u0161ikm\u00e9 ta\u017een\u00ed nebo diagon\u00e1ln\u00ed zved\u00e1n\u00ed nejsou v praxi neobvykl\u00e9. \u010cast\u00e9 p\u0159et\u00ed\u017een\u00ed a nespr\u00e1vn\u00e9 postupy zved\u00e1n\u00ed vystavuj\u00ed hlavn\u00ed nosn\u00edk nam\u00e1h\u00e1n\u00ed nad r\u00e1mec n\u00e1vrhov\u00fdch hodnot, co\u017e vede k lok\u00e1ln\u00ed koncentraci nap\u011bt\u00ed, urychlen\u00e9 \u00fanav\u011b materi\u00e1lu a v kone\u010dn\u00e9m d\u016fsledku k tvorb\u011b trhlin. P\u0159et\u00ed\u017een\u00ed m\u016f\u017ee tak\u00e9 zp\u016fsobit struktur\u00e1ln\u00ed deformaci, kter\u00e1 d\u00e1le zesiluje koncentraci nap\u011bt\u00ed a \u0161\u00ed\u0159en\u00ed trhlin.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-7-vibration-and-impact\">1.7 Vibrace a n\u00e1razy<\/h3>\n\n\n\n<p>Je\u0159\u00e1by jsou b\u011bhem provozu nevyhnuteln\u011b vystaveny vibrac\u00edm a n\u00e1raz\u016fm. Nadm\u011brn\u00e9 mezery ve spoj\u00edch kolejnic mohou p\u0159i pohybu je\u0159\u00e1bu p\u0159es spoje kolejnic generovat zna\u010dn\u00e9 r\u00e1zov\u00e9 zat\u00ed\u017een\u00ed. Dlouhodob\u00e9 vibrace a n\u00e1razy zp\u016fsobuj\u00ed \u00fanavov\u00e9 po\u0161kozen\u00ed a podporuj\u00ed \u0161\u00ed\u0159en\u00ed mikrotrhlin. Trhliny s v\u011bt\u0161\u00ed pravd\u011bpodobnost\u00ed vznikaj\u00ed a \u0161\u00ed\u0159\u00ed se v prom\u011bnn\u00fdch pr\u016f\u0159ezech, kde je ji\u017e p\u0159\u00edtomna koncentrace nap\u011bt\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-solutions-for-overhead-crane-girder-web-cracking\">2. \u0158e\u0161en\u00ed pro prask\u00e1n\u00ed stojiny nosn\u00edk\u016f mostov\u00e9ho je\u0159\u00e1bu<\/h2>\n\n\n\n<p>Pro prevenci a sn\u00ed\u017een\u00ed prask\u00e1n\u00ed stojiny na prom\u011bnn\u00e9m pr\u016f\u0159ezu na konci hlavn\u00edho nosn\u00edku mostov\u00e9ho je\u0159\u00e1bu by m\u011bl b\u00fdt p\u0159ijat komplexn\u00ed soubor opat\u0159en\u00ed:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-1-improve-structural-design\">2.1 Zlep\u0161en\u00ed konstruk\u010dn\u00edho n\u00e1vrhu<\/h3>\n\n\n\n<p>Optimalizujte n\u00e1vrh prom\u011bnn\u00e9ho pr\u016f\u0159ezu pomoc\u00ed plynul\u00fdch, postupn\u00fdch p\u0159echod\u016f pro sn\u00ed\u017een\u00ed koncentrace nap\u011bt\u00ed. Za\u010dle\u0148te n\u00e1vrh na \u00fanavu materi\u00e1lu pro \u0159e\u0161en\u00ed probl\u00e9m\u016f s dlouhodobou \u00fanavou materi\u00e1lu. Doporu\u010den\u00e1 n\u00e1pravn\u00e1 opat\u0159en\u00ed pro vyztu\u017een\u00ed zahrnuj\u00ed:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"720\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Adding-a-gusset-plate-at-the-connection-plate.png\" alt=\"\" class=\"wp-image-15947\"\/><\/figure>\n\n\n\n<p>Pro zlep\u0161en\u00ed lok\u00e1ln\u00ed tuhosti p\u0159idejte na spoj troj\u00faheln\u00edkov\u00e9 sty\u010dn\u00edkov\u00e9 desky, jak je zn\u00e1zorn\u011bno na obr\u00e1zku n\u00ed\u017ee.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2496\" height=\"1664\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-plate-scheme.png\" alt=\"\" class=\"wp-image-15935\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-plate-scheme.png 2496w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-plate-scheme-1536x1024.png 1536w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-plate-scheme-2048x1365.png 2048w\" sizes=\"(max-width: 2496px) 100vw, 2496px\" \/><\/figure>\n\n\n\n<p>Dal\u0161\u00edm p\u0159\u00edstupem je zes\u00edlen\u00ed z\u00e1platov\u00e1n\u00edm, jak je zn\u00e1zorn\u011bno na obr\u00e1zku n\u00ed\u017ee.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2496\" height=\"1664\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-by-patching.png\" alt=\"\" class=\"wp-image-15936\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-by-patching.png 2496w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-by-patching-1536x1024.png 1536w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2026\/08\/Reinforcement-by-patching-2048x1365.png 2048w\" sizes=\"(max-width: 2496px) 100vw, 2496px\" \/><\/figure>\n\n\n\n<p>Proto\u017ee v\u0161ak p\u016fvodn\u00ed konstrukce ji\u017e m\u00e1 ve spodn\u00ed \u010d\u00e1sti stojiny v\u00fdztu\u017enou desku, mus\u00ed b\u00fdt jak\u00e1koli nov\u00e1 v\u00fdztu\u017en\u00e1 deska um\u00edst\u011bna tak, aby se vyhnula st\u00e1vaj\u00edc\u00ed. To vytv\u00e1\u0159\u00ed ur\u010dit\u00fd probl\u00e9m s koncentrac\u00ed nap\u011bt\u00ed v sousedn\u00edch svarech.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-2-improve-welding-quality\">2.2 Zlep\u0161en\u00ed kvality sva\u0159ov\u00e1n\u00ed<\/h3>\n\n\n\n<p>P\u0159\u00edsn\u011b kontrolujte postup sva\u0159ov\u00e1n\u00ed, abyste zajistili bezvadn\u00e9 svary. Pou\u017e\u00edvejte pokro\u010dil\u00e9 sva\u0159ovac\u00ed techniky a kontroln\u00ed metody, jako je ultrazvukov\u00e9 zkou\u0161en\u00ed (UT) a radiografick\u00e9 zkou\u0161en\u00ed (RT), k rychl\u00e9 detekci a oprav\u011b vad sva\u0159ov\u00e1n\u00ed. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-3-ensure-material-quality\">2.3 Zaji\u0161t\u011bn\u00ed kvality materi\u00e1lu<\/h3>\n\n\n\n<p>Pou\u017e\u00edvejte vysoce kvalitn\u00ed materi\u00e1ly bez po\u010d\u00e1te\u010dn\u00edch vad. Prov\u00e1d\u011bjte pravideln\u00e9 testov\u00e1n\u00ed materi\u00e1l\u016f, abyste potvrdili, \u017ee jejich vlastnosti spl\u0148uj\u00ed po\u017eadavky.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-4-operate-equipment-properly\">2.4 Spr\u00e1vn\u00e9 pou\u017e\u00edv\u00e1n\u00ed za\u0159\u00edzen\u00ed<\/h3>\n\n\n\n<p>Zajist\u011bte nezbytn\u00e9 \u0161kolen\u00ed obsluhy, aby se zabr\u00e1nilo p\u0159et\u00ed\u017een\u00ed. Provozujte a udr\u017eujte za\u0159\u00edzen\u00ed v souladu s konstruk\u010dn\u00edmi specifikacemi, abyste prodlou\u017eili jeho \u017eivotnost.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-5-perform-regular-maintenance-and-inspection\">2.5 Prov\u00e1d\u011bjte pravidelnou \u00fadr\u017ebu a kontrolu<\/h3>\n\n\n\n<p>Prov\u00e1d\u011bjte pravideln\u00e9 kontroly \u00fadr\u017eby mostov\u00fdch je\u0159\u00e1b\u016f se zvl\u00e1\u0161tn\u00edm zam\u011b\u0159en\u00edm na sledov\u00e1n\u00ed ploch s prom\u011bnn\u00fdm pr\u016f\u0159ezem, abyste v\u010das odhalili a opravili trhliny.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Z\u00e1v\u011br<\/h2>\n\n\n\n<p>Opat\u0159en\u00ed uveden\u00e1 v t\u00e9to anal\u00fdze trhlin na stojin\u011b nosn\u00edku mostov\u00e9ho je\u0159\u00e1bu mohou \u00fa\u010dinn\u011b zabr\u00e1nit vzniku trhlin na stojin\u011b s prom\u011bnn\u00fdm pr\u016f\u0159ezem na konci hlavn\u00edho nosn\u00edku mostov\u00e9ho je\u0159\u00e1bu a sn\u00ed\u017eit jejich v\u00fdskyt, a zajistit tak bezpe\u010dn\u00fd provoz za\u0159\u00edzen\u00ed. <\/p>","protected":false},"excerpt":{"rendered":"Web cracking at the variable cross-section at the end of the main girder is a common and serious problem in overhead cranes during long-term service. Understanding the causes of crack formation is essential for prevention and resolution. The following is an analysis of the causes of web cracking at the variable cross-section at the end [&hellip;]","protected":false},"featured_media":15933,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[197],"posts_tag":[247],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/15941"}],"collection":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":7,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/15941\/revisions"}],"predecessor-version":[{"id":15951,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/xmxposts\/15941\/revisions\/15951"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/media\/15933"}],"wp:attachment":[{"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/media?parent=15941"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/posts_category?post=15941"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/cs\/wp-json\/wp\/v2\/posts_tag?post=15941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}