{"id":17345,"date":"2026-09-14T06:20:55","date_gmt":"2026-09-14T06:20:55","guid":{"rendered":"https:\/\/www.dgcrane.com\/?p=17345"},"modified":"2026-09-14T06:20:58","modified_gmt":"2026-09-14T06:20:58","slug":"jib-crane-deflection-calculator","status":"publish","type":"post","link":"https:\/\/www.dgcrane.com\/vi\/jib-crane-deflection-calculator\/","title":{"rendered":"M\u00e1y t\u00ednh \u0111\u1ed9 v\u00f5ng c\u1ea7n c\u1ea9u Jib"},"content":{"rendered":"<!-- WordPress Custom HTML: paste this entire block without adding html or body tags. -->\n<div id=\"calculator\" data-jib-deflection-calculator>\n  <style>\n    #calculator {\n      --primary-color:#0a3487;\n      --primary-hover:#F58423;\n      --error-color:#e53935;\n      --bg-color:#EAEEF7;\n      --text-color:#4a4a4a;\n      --surface-color:#ffffff;\n      --border-color:#cccccc;\n      max-width:545px;\n      padding:30px;\n      background:var(--bg-color);\n      color:var(--text-color);\n      box-sizing:border-box;\n      font-family:Arial,sans-serif;\n    }\n    #calculator * { box-sizing:border-box; }\n    #calculator .calc-title { font-size:18px; font-weight:bold; margin-bottom:6px; }\n    #calculator .calc-row { margin-bottom:18px; }\n    #calculator .calc-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:0 16px; }\n    #calculator label { display:block; font-size:14px; margin-bottom:6px; }\n    #calculator input,\n    #calculator select {\n      width:100%; height:36px; padding:0 10px; border:1px solid var(--border-color);\n      border-radius:0; background:var(--surface-color); color:var(--text-color);\n      font-size:16px; transition:all .2s ease;\n    }\n    #calculator input:focus,\n    #calculator select:focus { outline:none; border:2px solid var(--primary-color); }\n    #calculator input.error,\n    #calculator select.error { border:2px solid var(--error-color); }\n    #calculator .error-msg { display:none; color:var(--error-color); font-size:12px; margin-top:4px; }\n    #calculator .error-msg.show { display:block; }\n    #calculator .help { display:block; font-size:12px; margin-top:4px; }\n    #calculator .safety-note {\n      grid-column:1 \/ -1;\n      margin:-10px 0 18px;\n      font-size:12px;\n      line-height:1.5;\n    }\n    #calculator .btn-group { display:flex; gap:12px; margin-top:24px; }\n    #calculator button {\n      flex:1; height:34px; line-height:34px; padding:0 10px; border:0; border-radius:0;\n      cursor:pointer; font-size:14px; transition:all .2s ease;\n    }\n    #calculator #calculator-submit { background:var(--primary-color); color:var(--surface-color); }\n    #calculator #calculator-submit:hover { background:var(--primary-hover); }\n    #calculator #calculator-reset { background:var(--surface-color); color:var(--primary-color); border:1px solid var(--primary-color); }\n    #calculator .result-wrap { margin-top:24px; padding:16px; border:1px solid var(--border-color); background:var(--surface-color); text-align:center; }\n    #calculator .result-title { font-size:14px; }\n    #calculator .result-value { margin:4px 0 0; color:var(--primary-color); font-size:40px; font-weight:bold; }\n    #calculator .error-summary { display:none; margin-bottom:14px; color:var(--error-color); font-size:13px; }\n    #calculator .error-summary.show { display:block; }\n    @media (max-width:768px) {\n      #calculator .calc-grid { grid-template-columns:1fr; }\n      #calculator .safety-note { grid-column:auto; }\n      #calculator label, #calculator button { font-size:.28rem; }\n      #calculator input, #calculator select { height:.7rem; font-size:.28rem; }\n      #calculator button { height:.7rem; line-height:.7rem; width:100%; }\n      #calculator .btn-group { flex-direction:column; }\n      #calculator .result-value { font-size:.56rem; }\n    }\n  <\/style>\n\n\n  <div id=\"calculator-form\">\n    <div id=\"calculator-error-summary\" class=\"error-summary\" role=\"alert\" tabindex=\"-1\"><\/div>\n    <div class=\"calc-grid\">\n      <div class=\"calc-row\">\n        <label for=\"calculator-safetyFactor\">H\u1ec7 s\u1ed1 an to\u00e0n, k<\/label>\n        <select id=\"calculator-safetyFactor\">\n          <option value=\"1.0\" selected>1.00 \u2013 Ho\u1ea1t \u0111\u1ed9ng t\u0129nh b\u00ecnh th\u01b0\u1eddng<\/option>\n          <option value=\"1.1\">1.10 \u2013 Kh\u1edfi \u0111\u1ed9ng\/d\u1eebng ho\u1eb7c v\u1eadn h\u00e0nh b\u1eb1ng bi\u1ebfn t\u1ea7n<\/option>\n          <option value=\"1.15\">1.15 \u2013 Kh\u1edfi \u0111\u1ed9ng\/d\u1eebng ho\u1eb7c v\u1eadn h\u00e0nh b\u1eb1ng bi\u1ebfn t\u1ea7n<\/option>\n          <option value=\"1.2\">1.20 \u2013 Chuy\u1ec3n \u0111\u1ed9ng nhanh h\u01a1n ho\u1eb7c t\u00e1c \u0111\u1ed9ng r\u00f5 r\u1ec7t<\/option>\n          <option value=\"1.3\">1.30 \u2013 Chuy\u1ec3n \u0111\u1ed9ng nhanh h\u01a1n ho\u1eb7c t\u00e1c \u0111\u1ed9ng r\u00f5 r\u1ec7t<\/option>\n        <\/select>\n        <div class=\"error-msg\" id=\"calculator-safetyFactor-error\"><\/div>\n      <\/div>\n      <div class=\"calc-row\"><label for=\"calculator-ratedLoad\">C\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c, Q (N)<\/label><input id=\"calculator-ratedLoad\" type=\"number\" step=\"any\" min=\"0\" inputmode=\"decimal\" autocomplete=\"off\"><div class=\"error-msg\" id=\"calculator-ratedLoad-error\"><\/div><\/div>\n\n      <div class=\"calc-row\"><label for=\"calculator-hoistWeight\">Tr\u1ecdng l\u01b0\u1ee3ng t\u1eddi \u0111i\u1ec7n, Gh (N)<\/label><input id=\"calculator-hoistWeight\" type=\"number\" step=\"any\" min=\"0\" inputmode=\"decimal\" autocomplete=\"off\"><div class=\"error-msg\" id=\"calculator-hoistWeight-error\"><\/div><\/div>\n      <div class=\"calc-row\"><label for=\"calculator-radius\">B\u00e1n k\u00ednh quay hi\u1ec7u d\u1ee5ng c\u1ee7a d\u1ea7m \u043a\u043e\u043d\u0441\u043e\u043b\u044c, a (mm)<\/label><input id=\"calculator-radius\" type=\"number\" step=\"any\" min=\"0\" inputmode=\"decimal\" autocomplete=\"off\"><div class=\"error-msg\" id=\"calculator-radius-error\"><\/div><\/div>\n      <div class=\"calc-row\"><label for=\"calculator-columnHeight\">Chi\u1ec1u cao hi\u1ec7u d\u1ee5ng c\u1ee7a c\u1ed9t, L (mm)<\/label><input id=\"calculator-columnHeight\" type=\"number\" step=\"any\" min=\"0\" inputmode=\"decimal\" autocomplete=\"off\"><div class=\"error-msg\" id=\"calculator-columnHeight-error\"><\/div><\/div>\n      <div class=\"calc-row\"><label for=\"calculator-elasticModulus\">M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i c\u1ee7a th\u00e9p, E (N\/mm\u00b2)<\/label><input id=\"calculator-elasticModulus\" type=\"number\" step=\"any\" min=\"0\" value=\"206000\" inputmode=\"decimal\" autocomplete=\"off\"><small class=\"help\"><\/small><div class=\"error-msg\" id=\"calculator-elasticModulus-error\"><\/div><\/div>\n      <div class=\"calc-row\">\n        <label for=\"calculator-beamSpecification\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt d\u1ea7m ch\u1eef I<\/label>\n        <select id=\"calculator-beamSpecification\">\n          <option value=\"\" selected>\u2014 Ch\u1ecdn th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt d\u1ea7m ch\u1eef I \u2014<\/option>\n          <option value=\"16\">16<\/option>\n          <option value=\"18\">18<\/option>\n          <option value=\"20a\">20a<\/option>\n          <option value=\"22a\">22a<\/option>\n          <option value=\"25b\">25b<\/option>\n          <option value=\"28a\">28a<\/option>\n          <option value=\"32a\">32a<\/option>\n        <\/select>\n        <div class=\"error-msg\" id=\"calculator-beamSpecification-error\"><\/div>\n      <\/div>\n      <div class=\"calc-row\">\n        <label for=\"calculator-beamInertia\">M\u00f4men qu\u00e1n t\u00ednh m\u1eb7t c\u1eaft d\u1ea7m \u043a\u043e\u043d\u0441\u043e\u043b\u044c, J1 (cm\u2074)<\/label>\n        <select id=\"calculator-beamInertia\">\n          <option value=\"\" selected>\u2014 Ch\u1ecdn gi\u00e1 tr\u1ecb J1 \u2014<\/option>\n          <option value=\"1130\">1130<\/option>\n          <option value=\"1660\">1660<\/option>\n          <option value=\"2370\">2370<\/option>\n          <option value=\"3400\">3400<\/option>\n          <option value=\"5280\">5280<\/option>\n          <option value=\"7110\">7110<\/option>\n          <option value=\"11100\">11100<\/option>\n        <\/select>\n        <div class=\"error-msg\" id=\"calculator-beamInertia-error\"><\/div>\n      <\/div>\n      <div class=\"calc-row\"><label for=\"calculator-outerDiameter\">\u0110\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a \u1ed1ng th\u00e9p c\u1ed9t, D (mm)<\/label><input id=\"calculator-outerDiameter\" type=\"number\" step=\"any\" min=\"0\" inputmode=\"decimal\" autocomplete=\"off\"><div class=\"error-msg\" id=\"calculator-outerDiameter-error\"><\/div><\/div>\n      <div class=\"calc-row\"><label for=\"calculator-innerDiameter\">\u0110\u01b0\u1eddng k\u00ednh trong c\u1ee7a \u1ed1ng th\u00e9p c\u1ed9t, d (mm)<\/label><input id=\"calculator-innerDiameter\" type=\"number\" step=\"any\" min=\"0\" inputmode=\"decimal\" autocomplete=\"off\"><div class=\"error-msg\" id=\"calculator-innerDiameter-error\"><\/div><\/div>\n    <\/div>\n    <div class=\"btn-group\"><button id=\"calculator-submit\" type=\"button\">T\u00ednh to\u00e1n \u0111\u1ed9 l\u1ec7ch<\/button><button id=\"calculator-reset\" type=\"button\">C\u00e0i l\u1ea1i<\/button><\/div>\n  <\/div>\n\n  <div class=\"result-wrap\" aria-live=\"polite\" aria-atomic=\"true\">\n    <div class=\"result-title\">\u0110\u1ed9 l\u1ec7ch t\u1ed5ng c\u1ed9ng \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n, \u03b4<\/div>\n    <div id=\"calculator-result\" class=\"result-value\">&#8212;<\/div>\n  <\/div>\n\n  <script>\n    (function jibCraneDeflectionCalculator() {\n      \"use strict\";\n      const currentScript = document.currentScript;\n      const root = currentScript && currentScript.closest(\"[data-jib-deflection-calculator]\")\n        ? currentScript.closest(\"[data-jib-deflection-calculator]\")\n        : document.querySelector(\"[data-jib-deflection-calculator]\");\n      if (!root) return;\n      const submitButton = root.querySelector(\"#calculator-submit\");\n      const resetButton = root.querySelector(\"#calculator-reset\");\n      const beamSpecification = root.querySelector(\"#calculator-beamSpecification\");\n      const fields = [\"safetyFactor\",\"ratedLoad\",\"hoistWeight\",\"radius\",\"columnHeight\",\"elasticModulus\",\"beamInertia\",\"outerDiameter\",\"innerDiameter\"];\n      const result = root.querySelector(\"#calculator-result\");\n      const errorSummary = root.querySelector(\"#calculator-error-summary\");\n      function getInput(fieldName) { return root.querySelector(\"#calculator-\" + fieldName); }\n      function setError(fieldName, message) {\n        const input = getInput(fieldName);\n        const error = root.querySelector(\"#calculator-\" + fieldName + \"-error\");\n        input.classList.add(\"error\"); error.textContent = message; error.classList.add(\"show\");\n      }\n      function clearError(fieldName) {\n        const input = getInput(fieldName);\n        const error = root.querySelector(\"#calculator-\" + fieldName + \"-error\");\n        input.classList.remove(\"error\"); error.textContent = \"\"; error.classList.remove(\"show\");\n      }\n      function validateInput(fieldName) {\n        const input = getInput(fieldName);\n        const value = Number.parseFloat(input.value);\n        clearError(fieldName);\n        if (input.value.trim() === \"\" || !Number.isFinite(value) || value <= 0) {\n          setError(fieldName, \"Enter a finite value greater than 0.\"); return null;\n        }\n        return value;\n      }\n      function calculateDeflection(values) {\n        const totalLoad = values.safetyFactor * values.ratedLoad + values.hoistWeight;\n        const columnInertia = Math.PI \/ 64 * (Math.pow(values.outerDiameter, 4) - Math.pow(values.innerDiameter, 4));\n        const beamInertiaMm4 = values.beamInertia * 10000;\n        const beamDeflection = totalLoad * Math.pow(values.radius, 3) \/ (3 * values.elasticModulus * beamInertiaMm4);\n        const columnDeflection = totalLoad * Math.pow(values.radius, 2) * values.columnHeight \/ (values.elasticModulus * columnInertia);\n        return { totalLoad:totalLoad, columnInertia:columnInertia, beamDeflection:beamDeflection, columnDeflection:columnDeflection, totalDeflection:beamDeflection + columnDeflection };\n      }\n      function resetResult() { result.textContent = \"--\"; }\n      submitButton.addEventListener(\"click\", function () {\n        errorSummary.textContent = \"\"; errorSummary.classList.remove(\"show\");\n        const values = {};\n        fields.forEach(function (fieldName) { values[fieldName] = validateInput(fieldName); });\n        if (fields.some(function (fieldName) { return values[fieldName] === null; })) {\n          resetResult();\n          errorSummary.textContent = \"Please correct the highlighted input values.\"; errorSummary.classList.add(\"show\"); errorSummary.focus(); return;\n        }\n        if (values.innerDiameter >= values.outerDiameter) {\n          setError(\"innerDiameter\", \"d must be smaller than D.\");\n          resetResult();\n          errorSummary.textContent = \"The inside diameter d must be smaller than the outside diameter D.\"; errorSummary.classList.add(\"show\"); errorSummary.focus(); return;\n        }\n        const calculation = calculateDeflection(values);\n        if (!Number.isFinite(calculation.totalDeflection) || calculation.columnInertia <= 0) {\n          resetResult();\n          errorSummary.textContent = \"The calculation could not produce a finite result. Check the input magnitudes.\"; errorSummary.classList.add(\"show\"); errorSummary.focus(); return;\n        }\n        result.textContent = calculation.totalDeflection.toFixed(2) + \" mm\";\n      });\n      fields.forEach(function (fieldName) {\n        getInput(fieldName).addEventListener(\"input\", function () { clearError(fieldName); errorSummary.textContent = \"\"; errorSummary.classList.remove(\"show\"); });\n      });\n      getInput(\"safetyFactor\").addEventListener(\"change\", function () {\n        clearError(\"safetyFactor\");\n        errorSummary.textContent = \"\";\n        errorSummary.classList.remove(\"show\");\n      });\n      const beamOptions = [\n        { specification:\"16\", inertia:\"1130\" },\n        { specification:\"18\", inertia:\"1660\" },\n        { specification:\"20a\", inertia:\"2370\" },\n        { specification:\"22a\", inertia:\"3400\" },\n        { specification:\"25b\", inertia:\"5280\" },\n        { specification:\"28a\", inertia:\"7110\" },\n        { specification:\"32a\", inertia:\"11100\" }\n      ];\n      beamSpecification.addEventListener(\"change\", function () {\n        const match = beamOptions.find(function (item) { return item.specification === beamSpecification.value; });\n        getInput(\"beamInertia\").value = match ? match.inertia : \"\";\n        clearError(\"beamSpecification\");\n        clearError(\"beamInertia\");\n        errorSummary.textContent = \"\";\n        errorSummary.classList.remove(\"show\");\n      });\n      getInput(\"beamInertia\").addEventListener(\"change\", function () {\n        const match = beamOptions.find(function (item) { return item.inertia === getInput(\"beamInertia\").value; });\n        beamSpecification.value = match ? match.specification : \"\";\n        clearError(\"beamSpecification\");\n        clearError(\"beamInertia\");\n        errorSummary.textContent = \"\";\n        errorSummary.classList.remove(\"show\");\n      });\n      resetButton.addEventListener(\"click\", function () {\n        fields.forEach(function (fieldName) {\n          getInput(fieldName).value = \"\";\n          clearError(fieldName);\n        });\n        getInput(\"safetyFactor\").value = \"1.0\";\n        getInput(\"elasticModulus\").value = \"206000\";\n        beamSpecification.value = \"\";\n        errorSummary.textContent = \"\";\n        errorSummary.classList.remove(\"show\");\n        resetResult();\n      });\n    }());\n  <\/script>\n<\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\">C\u00f4ng th\u1ee9c t\u00ednh \u0111\u1ed9 v\u00f5ng c\u1ee7a c\u1ea7n c\u1ea9u c\u1ea7n tr\u1ee5c<\/h2>\n\n\n\n<div id=\"jib-deflection-formula\">\n  <style>\n    #jib-deflection-formula {\n      font-family: \"Cambria Math\", \"Times New Roman\", serif;\n      font-size: 26px !important;\n      line-height: 1.6;\n      color: #000 !important;\n      text-align: left;\n    }\n\n    #jib-deflection-formula * {\n      color: inherit;\n    }\n\n    #jib-deflection-formula .formula-line {\n      display: flex;\n      align-items: center;\n      justify-content: flex-start;\n      flex-wrap: wrap;\n      gap: 6px;\n    }\n\n    #jib-deflection-formula .fraction {\n      display: inline-flex;\n      flex-direction: column;\n      align-items: center;\n      margin: 0 4px;\n      line-height: 1.2;\n      vertical-align: middle;\n    }\n\n    #jib-deflection-formula .numerator {\n      padding: 0 8px 3px;\n      text-align: center;\n    }\n\n    #jib-deflection-formula .denominator {\n      min-width: 100%;\n      padding: 3px 8px 0;\n      border-top: 1.5px solid #000;\n      text-align: center;\n    }\n\n    #jib-deflection-formula sub {\n      font-size: 0.72em;\n      vertical-align: -0.3em;\n    }\n\n    #jib-deflection-formula sup {\n      font-size: 0.72em;\n      vertical-align: 0.45em;\n    }\n\n    @media (max-width: 600px) {\n      #jib-deflection-formula {\n        font-size: 23px !important;\n      }\n    }\n  <\/style>\n\n  <div\n    class=\"formula-line\"\n    role=\"math\"\n    aria-label=\"delta equals p a cubed divided by 3 E J 1, plus p a squared L divided by E J 2\"\n  >\n    <span>\u03b4 =<\/span>\n\n    <span class=\"fraction\">\n      <span class=\"numerator\">pa<sup>3<\/sup><\/span>\n      <span class=\"denominator\">3EJ<sub>1<\/sub><\/span>\n    <\/span>\n\n    <span>+<\/span>\n\n    <span class=\"fraction\">\n      <span class=\"numerator\">pa<sup>2<\/sup>L<\/span>\n      <span class=\"denominator\">EJ<sub>2<\/sub><\/span>\n    <\/span>\n  <\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>p: H\u1ec7 s\u1ed1 an to\u00e0n \u00d7 t\u1ea3i tr\u1ecdng + tr\u1ecdng l\u01b0\u1ee3ng t\u1eddi \u0111i\u1ec7n<\/li>\n\n\n\n<li>a: B\u00e1n k\u00ednh quay hi\u1ec7u d\u1ee5ng c\u1ee7a d\u1ea7m \u043a\u043e\u043d\u0441\u043e\u043b\u044c<\/li>\n\n\n\n<li>L: Chi\u1ec1u cao hi\u1ec7u d\u1ee5ng c\u1ee7a c\u1ed9t<\/li>\n\n\n\n<li>E: M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i c\u1ee7a th\u00e9p (th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u1ea5y l\u00e0 2,06 \u00d7 10\u00b9\u00b9 Pa)<\/li>\n\n\n\n<li>J<sub>1<\/sub>: Qu\u00e1n t\u00ednh m\u1eb7t c\u1eaft d\u1ea7m \u043a\u043e\u043d\u0441\u043e\u043b\u044c (d\u1ea7m ch\u1eef I)<\/li>\n\n\n\n<li>J<sub>2<\/sub>: Qu\u00e1n t\u00ednh ti\u1ebft di\u1ec7n c\u1ed9t (\u1ed1ng th\u00e9p)<\/li>\n<\/ul>\n\n\n\n<div id=\"column-inertia-formula\">\n  <style>\n    #column-inertia-formula {\n      font-family: \"Cambria Math\", \"Times New Roman\", serif;\n      font-size: 26px !important;\n      line-height: 1.6;\n      color: #000 !important;\n      text-align: left;\n    }\n\n    #column-inertia-formula * {\n      color: inherit;\n    }\n\n    #column-inertia-formula .formula-line {\n      display: flex;\n      align-items: center;\n      justify-content: flex-start;\n      flex-wrap: wrap;\n      gap: 6px;\n    }\n\n    #column-inertia-formula .fraction {\n      display: inline-flex;\n      flex-direction: column;\n      align-items: center;\n      margin: 0 4px;\n      line-height: 1.2;\n      vertical-align: middle;\n    }\n\n    #column-inertia-formula .numerator {\n      padding: 0 9px 3px;\n      text-align: center;\n    }\n\n    #column-inertia-formula .denominator {\n      min-width: 100%;\n      padding: 3px 9px 0;\n      border-top: 1.5px solid #000;\n      text-align: center;\n    }\n\n    #column-inertia-formula sub {\n      font-size: 0.72em;\n      vertical-align: -0.3em;\n    }\n\n    #column-inertia-formula sup {\n      font-size: 0.72em;\n      vertical-align: 0.45em;\n    }\n\n    @media (max-width: 600px) {\n      #column-inertia-formula {\n        font-size: 23px !important;\n      }\n    }\n  <\/style>\n\n  <div\n    class=\"formula-line\"\n    role=\"math\"\n    aria-label=\"J 2 equals pi divided by 64 multiplied by D to the fourth minus d to the fourth\"\n  >\n    <span>J<sub>2<\/sub> =<\/span>\n\n    <span class=\"fraction\">\n      <span class=\"numerator\">\u03c0<\/span>\n      <span class=\"denominator\">64<\/span>\n    <\/span>\n\n    <span>(D<sup>4<\/sup> \u2212 d<sup>4<\/sup>)<\/span>\n  <\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D: \u0110\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a \u1ed1ng th\u00e9p c\u1ed9t<\/li>\n\n\n\n<li>d: \u0110\u01b0\u1eddng k\u00ednh trong c\u1ee7a \u1ed1ng th\u00e9p c\u1ed9t<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Ghi ch\u00fa<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i c\u1ee7a th\u00e9p th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u1ea5y l\u00e0 2,06 \u00d7 10\u00b9\u00b9 Pa<\/li>\n\n\n\n<li>L\u1ef1a ch\u1ecdn h\u1ec7 s\u1ed1 an to\u00e0n: 1,00 cho t\u00ednh to\u00e1n t\u0129nh th\u00f4ng th\u01b0\u1eddng. 1,10-1,15 cho ho\u1ea1t \u0111\u1ed9ng kh\u1edfi \u0111\u1ed9ng\/d\u1eebng ho\u1eb7c \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng bi\u1ebfn t\u1ea7n. 1,20-1,30 cho chuy\u1ec3n \u0111\u1ed9ng nhanh h\u01a1n ho\u1eb7c va ch\u1ea1m \u0111\u00e1ng k\u1ec3. Ch\u1ec9 s\u1eed d\u1ee5ng \u0111\u1ec3 \u01b0\u1edbc t\u00ednh s\u01a1 b\u1ed9.<\/li>\n\n\n\n<li>C\u00f4ng c\u1ee5 t\u00ednh to\u00e1n \u0111\u1ed9 v\u00f5ng c\u1ea7n c\u1ea9u n\u00e0y \u0111\u00e3 bao g\u1ed3m c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt d\u1ea7m ch\u1eef I th\u00f4ng d\u1ee5ng v\u00e0 m\u00f4men qu\u00e1n t\u00ednh J c\u1ee7a ch\u00fang.<sub>1<\/sub>, trong \u0111\u00f3 tham chi\u1ebfu \u0111\u1ebfn c\u00e1c gi\u00e1 tr\u1ecb th\u00e9p k\u1ebft c\u1ea5u \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh trong Ph\u1ee5 l\u1ee5c A c\u1ee7a <a href=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/09\/hot-rolled-section-steel-GBT-706-2016.pdf\">GB\/T 706-2016<\/a> ho\u1eb7c ti\u00eau chu\u1ea9n ISO 657-1:2026 (hai ti\u00eau chu\u1ea9n n\u00e0y v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 nh\u1ea5t qu\u00e1n) v\u00e0 \u00e1p d\u1ee5ng cho d\u1ea7m ch\u1eef I c\u00e1n n\u00f3ng. <\/li>\n\n\n\n<li>B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y li\u1ec7t k\u00ea c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt kh\u00e1c c\u1ee7a d\u1ea7m ch\u1eef I v\u00e0 c\u00e1c gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng \u0111\u1ec3 b\u1ea1n l\u1ef1a ch\u1ecdn.<\/li>\n<\/ul>\n\n\n\n<!-- Independent GB\/T 706-2016 reference table. -->\n<div id=\"gb706-ibeam-reference-table\">\n  <style>\n    #gb706-ibeam-reference-table {\n      width: 100%;\n      max-width: 760px;\n      margin: 20px auto;\n      color: #333333;\n      font-family: Arial, \"Microsoft YaHei\", sans-serif;\n      font-size: 14px;\n      line-height: 1.35;\n    }\n\n    #gb706-ibeam-reference-table *,\n    #gb706-ibeam-reference-table *::before,\n    #gb706-ibeam-reference-table *::after {\n      box-sizing: border-box;\n    }\n\n    #gb706-ibeam-reference-table .gb706-table-wrap {\n      width: 100%;\n      overflow-x: auto;\n    }\n\n    #gb706-ibeam-reference-table table {\n      width: 100%;\n      min-width: 480px;\n      border-collapse: collapse;\n      table-layout: fixed;\n      background: #ffffff;\n    }\n\n    #gb706-ibeam-reference-table caption {\n      padding: 0 0 10px;\n      color: #222222;\n      font-size: 17px;\n      font-weight: 700;\n      text-align: left;\n    }\n\n    #gb706-ibeam-reference-table th,\n    #gb706-ibeam-reference-table td {\n      width: 25%;\n      padding: 6px 10px;\n      border: 1px solid #777777;\n      text-align: center;\n      vertical-align: middle;\n    }\n\n    #gb706-ibeam-reference-table thead th {\n      background: #f2f2f2;\n      color: #222222;\n      font-weight: 700;\n    }\n\n    #gb706-ibeam-reference-table tbody td:nth-child(1),\n    #gb706-ibeam-reference-table tbody td:nth-child(3) {\n      font-weight: 600;\n    }\n\n    #gb706-ibeam-reference-table tbody td:nth-child(2),\n    #gb706-ibeam-reference-table tbody td:nth-child(4) {\n      font-variant-numeric: tabular-nums;\n    }\n\n    #gb706-ibeam-reference-table .gb706-note {\n      margin: 8px 0 0;\n      color: #555555;\n      font-size: 12px;\n    }\n\n    @media (max-width: 600px) {\n      #gb706-ibeam-reference-table {\n        margin: 12px auto;\n        font-size: 12px;\n      }\n\n      #gb706-ibeam-reference-table caption {\n        font-size: 15px;\n      }\n\n      #gb706-ibeam-reference-table th,\n      #gb706-ibeam-reference-table td {\n        padding: 5px 7px;\n      }\n    }\n  <\/style>\n\n  <div class=\"gb706-table-wrap\">\n    <table>\n      <caption>C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt kh\u00e1c c\u1ee7a d\u1ea7m ch\u1eef I v\u00e0 m\u00f4men qu\u00e1n t\u00ednh c\u1ee7a m\u1eb7t c\u1eaft<\/caption>\n      <thead>\n        <tr>\n          <th scope=\"col\">D\u1ea7m ch\u1eef I<\/th>\n          <th scope=\"col\">Ix \/ cm<sup>4<\/sup><\/th>\n          <th scope=\"col\">D\u1ea7m ch\u1eef I<\/th>\n          <th scope=\"col\">Ix \/ cm<sup>4<\/sup><\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr><td>10<\/td><td>245<\/td><td>12<\/td><td>436<\/td><\/tr>\n        <tr><td>12.6<\/td><td>488<\/td><td>14<\/td><td>712<\/td><\/tr>\n        <tr><td>20b<\/td><td>2,500<\/td><td>22b<\/td><td>3,570<\/td><\/tr>\n        <tr><td>24a<\/td><td>4,570<\/td><td>24b<\/td><td>4,800<\/td><\/tr>\n        <tr><td>25a<\/td><td>5,020<\/td><td>27a<\/td><td>6,550<\/td><\/tr>\n        <tr><td>27b<\/td><td>6,870<\/td><td>28b<\/td><td>7,480<\/td><\/tr>\n        <tr><td>30a<\/td><td>8,950<\/td><td>30b<\/td><td>9,400<\/td><\/tr>\n        <tr><td>30 \u0111\u1ed9 C<\/td><td>9,850<\/td><td>32b<\/td><td>11,600<\/td><\/tr>\n        <tr><td>32 \u0111\u1ed9 C<\/td><td>12,200<\/td><td>36a<\/td><td>15,800<\/td><\/tr>\n        <tr><td>36b<\/td><td>16,500<\/td><td>36c<\/td><td>17,300<\/td><\/tr>\n        <tr><td>40a<\/td><td>21,700<\/td><td>40b<\/td><td>22,800<\/td><\/tr>\n        <tr><td>40 \u0111\u1ed9 C<\/td><td>23,900<\/td><td>45a<\/td><td>32,200<\/td><\/tr>\n        <tr><td>45b<\/td><td>33,800<\/td><td>45 \u0111\u1ed9 C<\/td><td>35,300<\/td><\/tr>\n        <tr><td>50a<\/td><td>46,500<\/td><td>50b<\/td><td>48,600<\/td><\/tr>\n        <tr><td>50 xu<\/td><td>50,600<\/td><td>55a<\/td><td>62,900<\/td><\/tr>\n        <tr><td>55b<\/td><td>65,600<\/td><td>55 xu<\/td><td>68,400<\/td><\/tr>\n        <tr><td>56a<\/td><td>65,600<\/td><td>56b<\/td><td>68,500<\/td><\/tr>\n        <tr><td>56c<\/td><td>71,400<\/td><td>63a<\/td><td>93,900<\/td><\/tr>\n        <tr><td>63b<\/td><td>98,100<\/td><td>63c<\/td><td>102,000<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <p class=\"gb706-note\">Ngu\u1ed3n: GB\/T 706-2016, Ph\u1ee5 l\u1ee5c A, B\u1ea3ng A.1. Ix l\u00e0 m\u00f4men qu\u00e1n t\u00ednh quanh tr\u1ee5c x.<\/p>\n<\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\">C\u1ea7n c\u1ea9u tr\u1ee5c ph\u00f9 h\u1ee3p<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u1ea7n c\u1ea9u Jib \u0111\u1ee9ng t\u1ef1 do<\/li>\n\n\n\n<li>C\u1ea7n c\u1ea9u ti\u00eau chu\u1ea9n FEM<\/li>\n\n\n\n<li>C\u1ea7n c\u1ea9u tr\u1ee5c tr\u1ea1m l\u00e0m vi\u1ec7c<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"M\u00e1y t\u00ednh \u0111\u1ed9 v\u00f5ng c\u1ea7n c\u1ea9u tr\u1ee5c \u01b0\u1edbc t\u00ednh \u0111\u1ed9 u\u1ed1n cong xu\u1ed1ng c\u1ee7a c\u1ea7n c\u1ea9u d\u01b0\u1edbi t\u1ea3i tr\u1ecdng n\u00e2ng \u0111\u1ec3 ki\u1ec3m tra an to\u00e0n v\u1eadn h\u00e0nh. V\u1edbi c\u00e1c th\u00f4ng s\u1ed1 c\u1ed1t l\u00f5i bao g\u1ed3m b\u00e1n k\u00ednh quay hi\u1ec7u d\u1ee5ng c\u1ee7a d\u1ea7m \u043a\u043e\u043d\u0441\u043e\u043b\u044c c\u1ea7n c\u1ea9u v\u00e0 chi\u1ec1u cao hi\u1ec7u d\u1ee5ng c\u1ee7a c\u1ed9t, n\u00f3 x\u00e1c nh\u1eadn s\u1ef1 tu\u00e2n th\u1ee7 c\u00e1c gi\u1edbi h\u1ea1n ti\u00eau chu\u1ea9n ISO, GB v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n li\u00ean quan. \u0110\u1ed9 v\u00f5ng qu\u00e1 m\u1ee9c g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng l\u1eafc l\u01b0 t\u1ea3i tr\u1ecdng v\u00e0 sai l\u1ec7ch \u0111\u1ecbnh v\u1ecb, v\u00e0 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn bi\u1ebfn d\u1ea1ng v\u0129nh vi\u1ec5n, m\u1ea5t \u1ed5n \u0111\u1ecbnh ho\u1eb7c g\u00e3y v\u1ee1. Kho\u1ea3ng c\u00e1ch l\u1edbn gi\u1eefa \u0111\u1ed9 v\u00f5ng th\u1ef1c t\u1ebf v\u00e0 \u0111\u1ed9 v\u00f5ng t\u00ednh to\u00e1n cho th\u1ea5y qu\u00e1 t\u1ea3i, c\u00e1c m\u1ed1i n\u1ed1i l\u1ecfng l\u1ebbo ho\u1eb7c l\u1ed7i. M\u00e1y t\u00ednh \u0111\u1ed9 v\u00f5ng c\u1ea7n c\u1ea9u tr\u1ee5c h\u1ed7 tr\u1ee3 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 v\u1eadn h\u00e0nh c\u1ea7n c\u1ea9u tr\u1ee5c \u0111\u00e1ng tin c\u1eady.","protected":false},"author":8,"featured_media":17361,"parent":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"single-onlinetools.php","format":"standard","meta":{"_acf_changed":false,"rank_math_lock_modified_date":false,"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[1059],"tags":[],"class_list":["post-17345","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-online-tools"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/posts\/17345"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/comments?post=17345"}],"version-history":[{"count":17,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/posts\/17345\/revisions"}],"predecessor-version":[{"id":17366,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/posts\/17345\/revisions\/17366"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/media\/17361"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/media?parent=17345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/categories?post=17345"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/vi\/wp-json\/wp\/v2\/tags?post=17345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}