{"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\/vi\/posts\/overhead-crane-girder-web-crack-analysis\/","title":{"rendered":"Ph\u00e2n t\u00edch v\u1ebft n\u1ee9t tr\u00ean b\u1ea3n b\u1ee5ng d\u1ea7m c\u1ea7u tr\u1ee5c: Nguy\u00ean nh\u00e2n v\u00e0 gi\u1ea3i ph\u00e1p"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>M\u1ee5c l\u1ee5c<\/p><nav><ul><li><a href=\"#1-root-causes-of-overhead-crane-girder-web-cracking\">1. Nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 g\u00e2y n\u1ee9t d\u1ea7m c\u1ea7u tr\u1ee5c tr\u00ean cao<\/a><ul><li><a href=\"#1-1-stress-concentration\">1.1 S\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t<\/a><\/li><li><a href=\"#1-2-welding-quality\">1.2 Ch\u1ea5t l\u01b0\u1ee3ng h\u00e0n<\/a><\/li><li><a href=\"#1-3-material-defects\">1.3 C\u00e1c khuy\u1ebft t\u1eadt v\u1eadt li\u1ec7u<\/a><\/li><li><a href=\"#1-4-fatigue-loading\">1.4 T\u1ea3i tr\u1ecdng m\u1ecfi<\/a><\/li><li><a href=\"#1-5-design-deficiencies\">1.5 Nh\u1eefng thi\u1ebfu s\u00f3t trong thi\u1ebft k\u1ebf<\/a><\/li><li><a href=\"#1-6-overloading-and-improper-use\">1.6 Qu\u00e1 t\u1ea3i v\u00e0 s\u1eed d\u1ee5ng kh\u00f4ng \u0111\u00fang c\u00e1ch<\/a><\/li><li><a href=\"#1-7-vibration-and-impact\">1.7 Rung \u0111\u1ed9ng v\u00e0 va \u0111\u1eadp<\/a><\/li><\/ul><\/li><li><a href=\"#2-solutions-for-overhead-crane-girder-web-cracking\">2. Gi\u1ea3i ph\u00e1p kh\u1eafc ph\u1ee5c n\u1ee9t d\u1ea7m c\u1ea7u tr\u1ee5c tr\u00ean cao<\/a><ul><li><a href=\"#2-1-improve-structural-design\">2.1 C\u1ea3i thi\u1ec7n thi\u1ebft k\u1ebf k\u1ebft c\u1ea5u<\/a><\/li><li><a href=\"#2-2-improve-welding-quality\">2.2 C\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng h\u00e0n<\/a><\/li><li><a href=\"#2-3-ensure-material-quality\">2.3 \u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u<\/a><\/li><li><a href=\"#2-4-operate-equipment-properly\">2.4 V\u1eadn h\u00e0nh thi\u1ebft b\u1ecb \u0111\u00fang c\u00e1ch<\/a><\/li><li><a href=\"#2-5-perform-regular-maintenance-and-inspection\">2.5 Th\u1ef1c hi\u1ec7n b\u1ea3o tr\u00ec v\u00e0 ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3<\/a><\/li><\/ul><\/li><li><a href=\"#conclusion\">Ph\u1ea7n k\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>N\u1ee9t v\u00e1ch t\u1ea1i v\u1ecb tr\u00ed ti\u1ebft di\u1ec7n thay \u0111\u1ed5i \u1edf \u0111\u1ea7u d\u1ea7m ch\u00ednh l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn v\u00e0 nghi\u00eam tr\u1ecdng \u1edf c\u1ea7n c\u1ea9u tr\u00ean cao trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh l\u00e2u d\u00e0i. Hi\u1ec3u r\u00f5 nguy\u00ean nh\u00e2n h\u00ecnh th\u00e0nh v\u1ebft n\u1ee9t l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 ph\u00f2ng ng\u1eeba v\u00e0 kh\u1eafc ph\u1ee5c. Sau \u0111\u00e2y l\u00e0 ph\u00e2n t\u00edch v\u1ec1 c\u00e1c nguy\u00ean nh\u00e2n g\u00e2y n\u1ee9t v\u00e1ch t\u1ea1i v\u1ecb tr\u00ed ti\u1ebft di\u1ec7n thay \u0111\u1ed5i \u1edf \u0111\u1ea7u d\u1ea7m ch\u00ednh c\u1ee7a c\u1ea7n c\u1ea9u tr\u00ean cao.<\/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\">V\u1ebft n\u1ee9t \u1edf b\u1ea3n b\u1ee5ng \u0111\u1ea7u d\u1ea7m ch\u00ednh: v\u1ebft n\u1ee9t xu\u1ea5t hi\u1ec7n \u1edf g\u00f3c c\u1ee7a m\u1eb7t c\u1eaft ngang thay \u0111\u1ed5i, n\u01a1i d\u1ea7m ch\u00ednh v\u00e0 gi\u00e1 \u0111\u1ee1 \u0111\u1ea7u d\u1ea7m n\u1ed1i v\u1edbi nhau.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-root-causes-of-overhead-crane-girder-web-cracking\">1. Nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 g\u00e2y n\u1ee9t d\u1ea7m c\u1ea7u tr\u1ee5c tr\u00ean cao<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-1-stress-concentration\">1.1 S\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t<\/h3>\n\n\n\n<p>\u0110\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 k\u00edch th\u01b0\u1edbc c\u0169ng nh\u01b0 nhu c\u1ea7u v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 c\u1ee9ng trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c kh\u00e1c nhau, ph\u1ea7n cu\u1ed1i c\u1ee7a d\u1ea7m ch\u00ednh th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi m\u1eb7t c\u1eaft ngang thay \u0111\u1ed5i. Tuy nhi\u00ean, s\u1ef1 gi\u00e1n \u0111o\u1ea1n v\u1ec1 h\u00ecnh h\u1ecdc t\u1ea1i v\u1ecb tr\u00ed thay \u0111\u1ed5i m\u1eb7t c\u1eaft t\u1ea1o ra s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t, c\u00f3 ngh\u0129a l\u00e0 \u1ee9ng su\u1ea5t t\u1ea1i m\u1eb7t c\u1eaft ngang thay \u0111\u1ed5i cao h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c khu v\u1ef1c kh\u00e1c. C\u00e1c v\u00f9ng t\u1eadp trung \u1ee9ng su\u1ea5t d\u1ec5 b\u1ecb n\u1ee9t v\u00e0 lan truy\u1ec1n v\u1ebft n\u1ee9t. V\u00ed d\u1ee5, ph\u00e2n t\u00edch c\u01a1 h\u1ecdc c\u1ee7a c\u1ea7n c\u1ea9u tr\u00ean cao cho th\u1ea5y \u0111\u01b0\u1eddng cong \u1ee9ng su\u1ea5t t\u01b0\u01a1ng \u0111\u01b0\u01a1ng th\u1ec3 hi\u1ec7n \u1ee9ng su\u1ea5t cao h\u01a1n \u0111\u00e1ng k\u1ec3 t\u1ea1i m\u1eb7t c\u1eaft ngang thay \u0111\u1ed5i so v\u1edbi c\u00e1c n\u01a1i kh\u00e1c.<\/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>S\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch \u1edf tr\u00ean c\u00f3 s\u1ef1 chuy\u1ec3n ti\u1ebfp d\u1ed1c t\u1ea1i m\u1eb7t c\u1eaft ngang thay \u0111\u1ed5i, trong khi c\u1ea5u tr\u00fac trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y s\u1eed d\u1ee5ng s\u1ef1 chuy\u1ec3n ti\u1ebfp vu\u00f4ng g\u00f3c, t\u1ea1o ra \u0111i\u1ec1u ki\u1ec7n t\u1eadp trung \u1ee9ng su\u1ea5t nghi\u00eam tr\u1ecdng h\u01a1n n\u1eefa.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-2-welding-quality\">1.2 Ch\u1ea5t l\u01b0\u1ee3ng h\u00e0n<\/h3>\n\n\n\n<p>Ch\u1ea5t l\u01b0\u1ee3ng h\u00e0n \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn an to\u00e0n k\u1ebft c\u1ea5u v\u00e0 tu\u1ed5i th\u1ecd c\u00f4ng tr\u00ecnh. C\u00e1c thao t\u00e1c h\u00e0n kh\u00f4ng \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng t\u1ea1o ra c\u00e1c khuy\u1ebft t\u1eadt nh\u01b0 r\u1ed7 kh\u00ed, t\u1ea1p ch\u1ea5t x\u1ec9, \u0111\u1ed9 xuy\u00ean th\u1ea5u kh\u00f4ng ho\u00e0n to\u00e0n v\u00e0 n\u1ee9t m\u1ed1i h\u00e0n. Nh\u1eefng khuy\u1ebft t\u1eadt n\u00e0y \u0111\u00f3ng vai tr\u00f2 l\u00e0 \u0111i\u1ec3m t\u1eadp trung \u1ee9ng su\u1ea5t v\u00e0 d\u1ec5 d\u00e0ng tr\u1edf th\u00e0nh \u0111i\u1ec3m kh\u1edfi ph\u00e1t n\u1ee9t d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a t\u1ea3i tr\u1ecdng b\u00ean ngo\u00e0i. C\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng h\u00e0n d\u1ec5 x\u1ea3y ra h\u01a1n \u1edf c\u00e1c ti\u1ebft di\u1ec7n thay \u0111\u1ed5i do s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a h\u00ecnh d\u1ea1ng m\u1ed1i h\u00e0n. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i h\u00e0n r\u1ea5t kh\u00f3 \u0111\u1ea3m b\u1ea3o t\u1ea1i g\u00f3c vu\u00f4ng c\u1ee7a m\u1ed1i h\u00e0n c\u00f3 ti\u1ebft di\u1ec7n thay \u0111\u1ed5i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-3-material-defects\">1.3 C\u00e1c khuy\u1ebft t\u1eadt v\u1eadt li\u1ec7u<\/h3>\n\n\n\n<p>Th\u00e9p c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n c\u00e1c khuy\u1ebft t\u1eadt b\u00ean trong nh\u01b0 t\u1ea1p ch\u1ea5t phi kim lo\u1ea1i, \u0111\u1ed9 x\u1ed1p v\u00e0 c\u00e1c v\u1ebft n\u1ee9t nh\u1ecf do c\u00e1c v\u1ea5n \u0111\u1ec1 trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. Nh\u1eefng khuy\u1ebft t\u1eadt n\u00e0y c\u00f3 xu h\u01b0\u1edbng lan r\u1ed9ng d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a \u1ee9ng su\u1ea5t v\u00e0 ph\u00e1t tri\u1ec3n th\u00e0nh c\u00e1c v\u1ebft n\u1ee9t c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y. Ngo\u00e0i ra, s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u gi\u1eefa c\u00e1c l\u00f4 s\u1ea3n xu\u1ea5t kh\u00e1c nhau c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t c\u1ee5c b\u1ed9, d\u1eabn \u0111\u1ebfn kh\u1ea3 n\u0103ng h\u00ecnh th\u00e0nh v\u1ebft n\u1ee9t. Th\u00f4ng tin v\u1ec1 v\u1eadt li\u1ec7u trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y kh\u00f4ng c\u00f3 s\u1eb5n, do \u0111\u00f3 kh\u00f4ng th\u1ec3 lo\u1ea1i tr\u1eeb kh\u1ea3 n\u0103ng khuy\u1ebft t\u1eadt v\u1eadt li\u1ec7u l\u00e0 nguy\u00ean nh\u00e2n g\u00e2y ra v\u1ea5n \u0111\u1ec1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-4-fatigue-loading\">1.4 T\u1ea3i tr\u1ecdng m\u1ecfi<\/h3>\n\n\n\n<p>C\u1ea7n c\u1ea9u tr\u00ean cao th\u01b0\u1eddng xuy\u00ean ph\u1ea3i ch\u1ecbu t\u1ea3i tr\u1ecdng \u0111\u1ed9ng l\u1eb7p \u0111i l\u1eb7p l\u1ea1i trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh. Ti\u1ebft di\u1ec7n thay \u0111\u1ed5i c\u1ee7a d\u1ea7m ch\u00ednh ch\u1ecbu s\u1ef1 bi\u1ebfn \u0111\u1ed5i \u1ee9ng su\u1ea5t theo chu k\u1ef3, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi n\u00e2ng t\u1ea3i. Chu k\u1ef3 \u1ee9ng su\u1ea5t l\u1eb7p \u0111i l\u1eb7p l\u1ea1i n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 h\u01b0 h\u1ecfng do m\u1ecfi v\u1eadt li\u1ec7u \u2014 c\u00e1c v\u1ebft n\u1ee9t do m\u1ecfi c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n sau th\u1eddi gian s\u1eed d\u1ee5ng l\u00e2u d\u00e0i ngay c\u1ea3 khi m\u1ee9c \u0111\u1ed9 \u1ee9ng su\u1ea5t v\u1eabn th\u1ea5p h\u01a1n gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee7a v\u1eadt li\u1ec7u. Ti\u1ebft di\u1ec7n thay \u0111\u1ed5i d\u1ec5 b\u1ecb n\u1ee9t h\u01a1n do t\u00e1c \u0111\u1ed9ng k\u1ebft h\u1ee3p c\u1ee7a s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t v\u00e0 s\u1ef1 m\u1ecfi v\u1eadt li\u1ec7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-5-design-deficiencies\">1.5 Nh\u1eefng thi\u1ebfu s\u00f3t trong thi\u1ebft k\u1ebf<\/h3>\n\n\n\n<p>C\u00e1c y\u1ebfu t\u1ed1 thi\u1ebft k\u1ebf l\u00e0m t\u0103ng nguy c\u01a1 n\u1ee9t bao g\u1ed3m s\u1ef1 chuy\u1ec3n ti\u1ebfp m\u1eb7t c\u1eaft \u0111\u1ed9t ng\u1ed9t m\u00e0 kh\u00f4ng c\u00f3 \u0111\u01b0\u1eddng vi\u1ec1n tr\u01a1n tru, kh\u00f4ng t\u00ednh to\u00e1n \u0111\u1ea7y \u0111\u1ee7 \u1ea3nh h\u01b0\u1edfng c\u1ee7a s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t v\u00e0 b\u1ecf qua c\u00e1c y\u1ebfu t\u1ed1 thi\u1ebft k\u1ebf v\u1ec1 m\u1ecfi. Vi\u1ec7c b\u1ecf s\u00f3t c\u1ed1t th\u00e9p t\u1ea1i m\u1eb7t c\u1eaft thay \u0111\u1ed5i trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn n\u1ee9t trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng l\u00e2u d\u00e0i. Do \u0111\u00f3, thi\u1ebft k\u1ebf \u0111\u00fang \u0111\u1eafn \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c gi\u1ea3m thi\u1ec3u s\u1ef1 h\u00ecnh th\u00e0nh v\u1ebft n\u1ee9t. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-6-overloading-and-improper-use\">1.6 Qu\u00e1 t\u1ea3i v\u00e0 s\u1eed d\u1ee5ng kh\u00f4ng \u0111\u00fang c\u00e1ch<\/h3>\n\n\n\n<p>M\u1eb7c d\u00f9 c\u1ea7n c\u1ea9u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi m\u1ed9t bi\u00ean \u0111\u1ed9 an to\u00e0n nh\u1ea5t \u0111\u1ecbnh theo c\u00e1c ti\u00eau chu\u1ea9n hi\u1ec7n h\u00e0nh, nh\u01b0ng t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i v\u00e0 k\u00e9o l\u1ec7ch ho\u1eb7c n\u00e2ng ch\u00e9o kh\u00f4ng ph\u1ea3i l\u00e0 hi\u1ebfm g\u1eb7p trong th\u1ef1c t\u1ebf. Vi\u1ec7c th\u01b0\u1eddng xuy\u00ean qu\u00e1 t\u1ea3i v\u00e0 thao t\u00e1c n\u00e2ng kh\u00f4ng \u0111\u00fang c\u00e1ch s\u1ebd khi\u1ebfn d\u1ea7m ch\u00ednh ch\u1ecbu \u1ee9ng su\u1ea5t v\u01b0\u1ee3t qu\u00e1 gi\u00e1 tr\u1ecb thi\u1ebft k\u1ebf, d\u1eabn \u0111\u1ebfn t\u1eadp trung \u1ee9ng su\u1ea5t c\u1ee5c b\u1ed9, l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 m\u1ecfi v\u1eadt li\u1ec7u v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 h\u00ecnh th\u00e0nh v\u1ebft n\u1ee9t. Qu\u00e1 t\u1ea3i c\u0169ng c\u00f3 th\u1ec3 g\u00e2y bi\u1ebfn d\u1ea1ng k\u1ebft c\u1ea5u, l\u00e0m t\u0103ng th\u00eam s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t v\u00e0 s\u1ef1 lan truy\u1ec1n v\u1ebft n\u1ee9t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-7-vibration-and-impact\">1.7 Rung \u0111\u1ed9ng v\u00e0 va \u0111\u1eadp<\/h3>\n\n\n\n<p>Trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng, c\u1ea7n c\u1ea9u ch\u1eafc ch\u1eafn ph\u1ea3i ch\u1ecbu rung \u0111\u1ed9ng v\u00e0 va \u0111\u1eadp. Khe h\u1edf gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng ray qu\u00e1 l\u1edbn c\u00f3 th\u1ec3 t\u1ea1o ra t\u1ea3i tr\u1ecdng va \u0111\u1eadp \u0111\u00e1ng k\u1ec3 khi c\u1ea7n c\u1ea9u di chuy\u1ec3n qua c\u00e1c m\u1ed1i n\u1ed1i \u0111\u01b0\u1eddng ray. Rung \u0111\u1ed9ng v\u00e0 va \u0111\u1eadp k\u00e9o d\u00e0i g\u00e2y ra h\u01b0 h\u1ecfng do m\u1ecfi v\u00e0 th\u00fac \u0111\u1ea9y s\u1ef1 lan truy\u1ec1n c\u1ee7a c\u00e1c v\u1ebft n\u1ee9t nh\u1ecf. C\u00e1c v\u1ebft n\u1ee9t c\u00f3 nhi\u1ec1u kh\u1ea3 n\u0103ng h\u00ecnh th\u00e0nh v\u00e0 lan r\u1ed9ng t\u1ea1i c\u00e1c m\u1eb7t c\u1eaft ngang thay \u0111\u1ed5i, n\u01a1i \u0111\u00e3 c\u00f3 s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-solutions-for-overhead-crane-girder-web-cracking\">2. Gi\u1ea3i ph\u00e1p kh\u1eafc ph\u1ee5c n\u1ee9t d\u1ea7m c\u1ea7u tr\u1ee5c tr\u00ean cao<\/h2>\n\n\n\n<p>C\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n m\u1ed9t lo\u1ea1t c\u00e1c bi\u1ec7n ph\u00e1p to\u00e0n di\u1ec7n \u0111\u1ec3 ng\u0103n ng\u1eeba v\u00e0 gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t v\u1ee1 \u1edf ph\u1ea7n ti\u1ebft di\u1ec7n thay \u0111\u1ed5i t\u1ea1i \u0111\u1ea7u d\u1ea7m ch\u00ednh c\u1ee7a c\u1ea7n c\u1ea9u tr\u00ean cao:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-1-improve-structural-design\">2.1 C\u1ea3i thi\u1ec7n thi\u1ebft k\u1ebf k\u1ebft c\u1ea5u<\/h3>\n\n\n\n<p>T\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf m\u1eb7t c\u1eaft ngang thay \u0111\u1ed5i b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c chuy\u1ec3n ti\u1ebfp m\u01b0\u1ee3t m\u00e0, d\u1ea7n d\u1ea7n \u0111\u1ec3 gi\u1ea3m s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t. K\u1ebft h\u1ee3p thi\u1ebft k\u1ebf ch\u1ecbu m\u1ecfi \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 m\u1ecfi l\u00e2u d\u00e0i. C\u00e1c bi\u1ec7n ph\u00e1p gia c\u1ed1 kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb bao g\u1ed3m:<\/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>Th\u00eam c\u00e1c t\u1ea5m gi\u1eb1ng h\u00ecnh tam gi\u00e1c t\u1ea1i m\u1ed1i n\u1ed1i, nh\u01b0 h\u00ecnh b\u00ean d\u01b0\u1edbi, \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 c\u1ee9ng c\u1ee5c b\u1ed9.<\/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>M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c l\u00e0 gia c\u1ed1 b\u1eb1ng c\u00e1ch v\u00e1, nh\u01b0 h\u00ecnh minh h\u1ecda b\u00ean d\u01b0\u1edbi.<\/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>Tuy nhi\u00ean, do k\u1ebft c\u1ea5u ban \u0111\u1ea7u \u0111\u00e3 c\u00f3 m\u1ed9t t\u1ea5m gia c\u01b0\u1eddng \u1edf ph\u1ea7n d\u01b0\u1edbi c\u1ee7a d\u1ea7m, n\u00ean b\u1ea5t k\u1ef3 t\u1ea5m gia c\u01b0\u1eddng m\u1edbi n\u00e0o c\u0169ng ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1eb7t sao cho tr\u00e1nh t\u1ea5m hi\u1ec7n c\u00f3. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t v\u1ea5n \u0111\u1ec1 t\u1eadp trung \u1ee9ng su\u1ea5t nh\u1ea5t \u0111\u1ecbnh t\u1ea1i c\u00e1c m\u1ed1i h\u00e0n li\u1ec1n k\u1ec1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-2-improve-welding-quality\">2.2 C\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng h\u00e0n<\/h3>\n\n\n\n<p>Ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd quy tr\u00ecnh h\u00e0n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ed1i h\u00e0n kh\u00f4ng c\u00f3 khuy\u1ebft t\u1eadt. S\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt h\u00e0n ti\u00ean ti\u1ebfn v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra nh\u01b0 ki\u1ec3m tra si\u00eau \u00e2m (UT) v\u00e0 ki\u1ec3m tra ch\u1ee5p X-quang (RT) \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 s\u1eeda ch\u1eefa k\u1ecbp th\u1eddi c\u00e1c khuy\u1ebft t\u1eadt h\u00e0n. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-3-ensure-material-quality\">2.3 \u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u<\/h3>\n\n\n\n<p>S\u1eed d\u1ee5ng v\u1eadt li\u1ec7u ch\u1ea5t l\u01b0\u1ee3ng cao, kh\u00f4ng c\u00f3 khuy\u1ebft t\u1eadt ban \u0111\u1ea7u. Ti\u1ebfn h\u00e0nh ki\u1ec3m tra v\u1eadt li\u1ec7u th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 x\u00e1c nh\u1eadn c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-4-operate-equipment-properly\">2.4 V\u1eadn h\u00e0nh thi\u1ebft b\u1ecb \u0111\u00fang c\u00e1ch<\/h3>\n\n\n\n<p>Cung c\u1ea5p \u0111\u00e0o t\u1ea1o c\u1ea7n thi\u1ebft cho ng\u01b0\u1eddi v\u1eadn h\u00e0nh \u0111\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i. V\u1eadn h\u00e0nh v\u00e0 b\u1ea3o tr\u00ec thi\u1ebft b\u1ecb theo \u0111\u00fang th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt thi\u1ebft k\u1ebf \u0111\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-5-perform-regular-maintenance-and-inspection\">2.5 Th\u1ef1c hi\u1ec7n b\u1ea3o tr\u00ec v\u00e0 ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3<\/h3>\n\n\n\n<p>Ti\u1ebfn h\u00e0nh ki\u1ec3m tra b\u1ea3o d\u01b0\u1ee1ng \u0111\u1ecbnh k\u1ef3 \u0111\u1ed1i v\u1edbi c\u1ea7n c\u1ea9u tr\u00ean cao, \u0111\u1eb7c bi\u1ec7t ch\u00fa tr\u1ecdng gi\u00e1m s\u00e1t c\u00e1c khu v\u1ef1c c\u00f3 ti\u1ebft di\u1ec7n thay \u0111\u1ed5i, \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 s\u1eeda ch\u1eefa c\u00e1c v\u1ebft n\u1ee9t k\u1ecbp th\u1eddi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p>C\u00e1c bi\u1ec7n ph\u00e1p \u0111\u01b0\u1ee3c n\u00eau trong ph\u00e2n t\u00edch v\u1ebft n\u1ee9t tr\u00ean b\u1ea3n b\u1ee5ng d\u1ea7m c\u1ea7u tr\u1ee5c n\u00e0y c\u00f3 th\u1ec3 ng\u0103n ng\u1eeba v\u00e0 gi\u1ea3m thi\u1ec3u hi\u1ec7u qu\u1ea3 hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t tr\u00ean b\u1ea3n b\u1ee5ng t\u1ea1i v\u1ecb tr\u00ed c\u00f3 ti\u1ebft di\u1ec7n thay \u0111\u1ed5i \u1edf \u0111\u1ea7u d\u1ea7m ch\u00ednh c\u1ee7a c\u1ea7u tr\u1ee5c, \u0111\u1ea3m b\u1ea3o v\u1eadn h\u00e0nh thi\u1ebft b\u1ecb an to\u00e0n. <\/p>","protected":false},"excerpt":{"rendered":"N\u1ee9t v\u00e1ch t\u1ea1i v\u1ecb tr\u00ed ti\u1ebft di\u1ec7n thay \u0111\u1ed5i \u1edf \u0111\u1ea7u d\u1ea7m ch\u00ednh l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn v\u00e0 nghi\u00eam tr\u1ecdng \u1edf c\u1ea7n c\u1ea9u tr\u00ean cao trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh l\u00e2u d\u00e0i. Hi\u1ec3u r\u00f5 nguy\u00ean nh\u00e2n h\u00ecnh th\u00e0nh v\u1ebft n\u1ee9t l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 ph\u00f2ng ng\u1eeba v\u00e0 kh\u1eafc ph\u1ee5c. Sau \u0111\u00e2y l\u00e0 ph\u00e2n t\u00edch v\u1ec1 c\u00e1c nguy\u00ean nh\u00e2n g\u00e2y n\u1ee9t v\u00e1ch t\u1ea1i v\u1ecb tr\u00ed ti\u1ebft di\u1ec7n thay \u0111\u1ed5i \u1edf \u0111\u1ea7u d\u1ea7m ch\u00ednh [\u2026]","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\/vi\/wp-json\/wp\/v2\/xmxposts\/15941"}],"collection":[{"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":7,"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts\/15941\/revisions"}],"predecessor-version":[{"id":15951,"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts\/15941\/revisions\/15951"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/media\/15933"}],"wp:attachment":[{"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/media?parent=15941"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/posts_category?post=15941"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/posts_tag?post=15941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}