Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/13826
DC FieldValueLanguage
dc.contributor.advisor呂東苗zh_TW
dc.contributor.advisorDung-Myau Lueen_US
dc.contributor.author梁維仁zh_TW
dc.contributor.authorLiang, Wei-Jenen_US
dc.date2001zh_TW
dc.date.accessioned2014-06-06T06:51:20Z-
dc.date.available2014-06-06T06:51:20Z-
dc.identifier.urihttp://hdl.handle.net/11455/13826-
dc.description.abstractAISC-ASD(1989)對於鋼樑受純彎矩下所能承受之最大容許應力主要依據Lateral-Torsional Buckling(LTB)、Flange Local Buckling (FLB)和Web Local Buckling(WLB)等三種破壞模式來決定,其中LTB破壞和鋼樑肢材之無側撐長度Lb有關,而FLB和WLB則和鋼樑斷面之結實情形(Compactness)有關。不同於ASD規範中將LTB、FLB和WLB破壞之各計算公式與使用條件列在一起討論且加以簡化其使用條件後,散列於各章節中,本研究中將LTB、FLB和WLB破壞之公式與使用條件分開討論,旨在整理出一有系統之計算公式並釐清三種破壞的發生時機和計算公式之使用條件與限制。 ASD(1989)規範對鋼樑容許應力所提供的公式相當繁多且實際之計算過程冗長,本研究在有系統的整理出一系列的公式後,使用Fortran 程式語言將計算之過程電腦化,希望利用電腦程式在執行計算時快速且準確的特性能在分析鋼樑最大容許應力的過程中有效縮短時間與提高準確性。zh_TW
dc.description.abstractIn the current ASD Specification of AISC, the allowable bending stress (Fb) of steel beam is obtained based on three buckling modes which include Lateral-Torsional Buckling (LTB), Flange Local Buckling (FLB), and Web Local Buckling (WLB). The Fb for LTB mode is evaluated in terms of unbraced length (Lb). The Fb for FLB and WLB modes is, however, based upon the compactness of section. The ASD Specification presents its Fb formulas in Chapter F of the Specification, sections F1 through F3. When one goes through the sections F1 to F3 of the Specification, it can be concluded that the Specification is not clear enough for the user to apply its formulas when the section consists of noncompact or slender element especially when the bucklings include the modes of FLB and WLB. In this study, the Fb formulas for LTB, FLB, and WLB are summarized and carefully reviewed with flow charts and related formulas, respectively. When the calculation of Fb involving the section reduction factor Q is really a long and tedious process, it is not an efficient way to obtain the value of Fb through this long process in routine design. This study provides an easy and fast approach, which is a computer way, to solve the problem. Both hand and computer calculations are presented in each selected example and the results are also compared. It was found that the computed values do match with the tabulated ones in the AISC-ASD design manual of 1989.en_US
dc.description.tableofcontents摘要i 目錄ii 圖表目錄iv 符號說明v 第一章 緒 論1 1.1 前言1 1.2 文獻回顧2 1.3 研究方法與目的2 第二章 鋼樑之容許應力─理論與規範4 2.1前言4 2.2 鋼樑理論應力4 2.2.1 彈性理論應力4 2.2.2 非彈性理論應力9 2.3 ASD規範設計公式10 2.3.1 彈性範圍10 2.3.2 非彈性範圍14 2.4 ASD容許應力公式之Lc、Lu、Lt 值15 2.4.1 Lc值15 2.4.2 Lu值16 2.4.3 Lt值17 2.5 例題17 2.5.1 理論方法:18 2.5.2 AISC-ASD方法:18 2.6 結實與非結實斷面(Compact and Noncompact Sections)21 2.6.1 斷面之結實性對容許應力之影響21 2.6.2 斷面不含柔細肢材21 2.7 斷面包含柔細肢材22 2.7.1 翼板為柔細肢材23 2.7.2 腹板為柔細肢材之公式推導23 2.7.3 腹板為柔細肢材28 2.7.3 腹板及翼板皆為柔細肢材28 2.8 鋼樑之ASD相關公式29 第三章 ASD鋼樑容許應力之電腦化分析35 3.1 前言35 3.2 程式使用說明35 3.3 程式之Input檔案說明36 3.4 執行計算鋼樑容許應力之流程圖39 第四章 應用例題44 4.1 前言44 4.2 例題45 4.3 手算例題與電腦程式執行結果及規範之比較95 第五章 結論與建議96 參考文獻100 附錄A 電腦程式(Source Code)103zh_TW
dc.language.isoen_USzh_TW
dc.publisher土木工程學系zh_TW
dc.subjectASDen_US
dc.subject鋼樑容許應力zh_TW
dc.subjectLateral-Torsional Buckllingen_US
dc.subjectFlange Local Bucklingen_US
dc.subjectWeb Local Bucklingen_US
dc.subjectMetal Structuresen_US
dc.subjectCompactnessen_US
dc.subjectAISCen_US
dc.subjectFortranen_US
dc.subject電腦化分析zh_TW
dc.subject板樑zh_TW
dc.subject局部挫屈zh_TW
dc.subject柔細肢材zh_TW
dc.subject結實性zh_TW
dc.subject規範zh_TW
dc.subject鋼樑容許彎矩zh_TW
dc.title鋼樑之ASD設計與電腦化分析zh_TW
dc.titleComputer-Assisted Analysis and Design of Steel Beams based on AISC-ASDen_US
dc.typeThesis and Dissertationzh_TW
item.languageiso639-1en_US-
item.openairetypeThesis and Dissertation-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.fulltextno fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
Appears in Collections:土木工程學系所
Show simple item record
 
TAIR Related Article

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.