新订《钢结构设计规范》(GBJ 17-88)内容介绍

继1974年《钢结构设计规范》(TJ 17-74)之后,经10多年来全国有关单位的共同努力,新订《钢结构设计规范》(GBJ 17-88)现已编修完成和出版,经建设部批准于1989年7月1日起正式实施。由于新规范(GBJ 17-88)较原规范(TJ 17-74)有较大的变动,引入了新的设计概念,改换了设计法,调整、充实和修改了许多章节,增添了新内容,扩大了应用范围;为了帮助广大会员和从事钢结构的工程人员对新订规范全貌有个基本了解,本刊特约规范主编单位—北京钢铁设计研究总院负责规范修改、汇总、编辑、订正等全过程的主要参加者和执笔者罗邦富高级工程师撰写了《钢结构设计规范》 (GBJ 17—88)内容介绍,以供学习、参考。     

基于中欧规范的轴心受压构件稳定性验算比较

根据EN 1993—1—1∶2005欧洲钢结构设计规范和中国GB 50017—2003钢结构设计规范,比较了轴心受压构件稳定性验算公式,并通过例题计算,得到两部规范的相同及差异之处,为涉外工程项目设计和管理提供参考。     

钢结构设计规范修订工作准备就绪新规范 (草稿) 将在年内完成

<正> 根据国家计划,为在1984年前最终完成钢结构设计规范的修订工作,规范管理部门于1983年3月在北京召开了钢结构设计规范工作会议。会议正式通过规范修订大纲。新的规范除将扩大钢结构的使用范围、增加新的钢种、修改基本计算规定、修改受弯构件的计算方法、修改轴心和偏心受力构件的计算方法以及修改疲劳强度设计、连接和构造设计方法以外,还将增加钢管结构设计、钢与混凝土联合梁设计及塑性设计等新的章节。新的规范在立足国内经验和科研成果的基础上,将在较大范同内向国外先进规范靠拢。据悉,新规范的起草工作将在年内完成;新规范的征求意见稿1984年二季度交全国钢结构标准技术委员会审查,并分发全国征求意见;1984年四季度完成报批稿,报国家计委审批。同时着手《钢结构设计手     

薄腹工字形截面轴压构件有效面积计算方法比较

对各国规范以及Winter公式关于工字形截面构件有效宽度的计算公式进行简要介绍,并采用各国规范方法和有限元数值模拟对腹板不同宽厚比和构件不同长细比的工字形截面轴压构件有效面积进行计算和分析。结果表明:《门式刚架轻型房屋钢结构技术规程》(CECS102:2002)在腹板宽厚比较大时有效面积过于保守,《钢结构设计规范》(GB50017—2003)、欧洲规范(E3-1.5:2006)对于长细比较大构件有效面积过于保守,《冷弯薄壁型钢结构技术规范》(GB50018—2002)、美国规范(AISC:2005)以及Winter公式与数值结果吻合较好,且有一定的安全度,建议对于薄腹工字形截面轴压构件有效面积可采用《冷弯薄壁型钢结构技术规范》(GB50018—2002)计算方法进行计算。     

轧制普通工字钢简支梁的整体稳定系数计算

现行《钢结构设计规范》(GB 50017-2003)沿用历次钢结构设计规范的规定:轧制普通工字钢简支梁的整体稳定系数φb不能引用等截面焊接工字型和H型钢的整体稳定系数φb的公式计算,而直接给出表格查用。通过分析表明,按《钢结构设计规范》(GB 50017-2003)附录B公式(B.1-1)所计算的φb,与规范GB 50017-2003中表B.2所给出的数据基本一致,因此建议今后规范统一采用公式(B.1-1)的理论公式计算φb。     

浅析欧洲规范钢结构设计中的螺栓连接设计

文章通过欧洲现行规范EN1993-1-8中对于螺栓连接设计的相关公式、参数和构造要求的归纳总结,按照钢结构螺栓连接的设计程序,简明扼要的梳理和归纳了欧洲规范相关要点及要求.     

高强焊接圆钢管轴心受压整体稳定性能设计方法研究

关于高强度焊接圆钢管受力性能的研究尚处于起步阶段,我国《钢结构设计规范》(GB 50017—2003)中针对焊接圆钢管轴心受压构件的整体稳定设计方法缺乏足够的研究依据,因此有必要对焊接圆钢管的整体稳定性能进行深入研究。利用ANSYS有限元软件对试验试件进行数值模拟计算,基于验证模型,对不同强度等级钢材和不同截面尺寸的高强度焊接圆钢管受压构件进行有限元参数分析。通过与国内外规范进行对比,最终对高强度焊接圆钢管的整体稳定设计方法提出两种建议:一是对于高强度焊接圆钢管截面轴心受压整体稳定承载性能可按照我国《钢结构设计规范》(GB 50017—2003)或欧洲规范Eurocode 3的a类柱子曲线进行设计计算;二是基于我国《钢结构设计规范》(GB 50017—2003)和欧洲规范Eurocode 3中的柱子曲线的公式形式,更新柱子曲线的缺陷系数,给出了新的设计曲线。     

国内外钢结构规范焊缝构造与连接计算方法的比较

以我国现行《钢结构设计规范》(GB50017—2003)为基础,结合《美国钢结构规范》(LRFD—2001)和《欧洲钢结构规范》(EC3—1993),对规范中关于对接焊缝和角焊缝的构造及连接计算方法进行了详细比较,相关结论可供工程技术人员了解国内外钢结构设计规范的技术水平和发展动态。     

中外抗震设计规范关于钢柱板件宽厚比限值的比较

板件宽厚比对钢结构的抗震性能有着重要影响,同时也是影响钢结构用钢量的一项重要指标,对钢结构的安全性和经济性均有着很重要的意义.目前国内已有不少文献认为我国现行抗震设计规范对梁柱截面板件宽厚比限值的规定尚不够严谨和完善,并对此提出了设计建议.结合中国抗震规范GB50011—2001、美国钢结构抗震规范ANSI/AISC 341—05、日本抗震规范BCJ和欧洲抗震规范Eurocode 8的相关规定,比较研究了中外抗震设计规范对工形截面和箱形截面钢柱板件宽厚比限值规定的异同,分析了中国抗震规范GB50011—2001关于钢柱板件宽厚比限值的合理性,为相关设计和研究提供了参考.     

新规范对单层工业厂房结构的抗震构造设计规定

新《建筑抗震设计规范》(GBJ 11—89)对单层工业厂房的抗震构造设计规定,是在总结78规范规定的实践经验和汲取近十年来抗震科研成果的基础上进行修订补充和完善的。在内容上有较多增加,反映了我国单层厂房抗震设计技术水平的显著提高。新规范对单层厂房结构的抗震构造设计规定,是按钢筋砼柱厂房、砖柱厂房和钢结构厂房分别给出的。下面分别就规定的主要内容作     

Numerical validation of the general method in EC3-1-1 for prismatic members

Part 1-1 of Eurocode 3 includes a general method for lateral and lateral-torsional buckling of structural components that uses a Merchant-Rankine type of empirical interaction expression to uncouple the in-plane effects and the out-of-plane effects. In this paper, the safety of this approach is assessed for prismatic members subjected to compression, bending and bending and axial force by comparison of both with advanced nonlinear numerical simulations (GMNIA) using beam and shell elements and the other Eurocode 3 approaches based on the European buckling curves. Analytical expressions are derived for columns, beams and beam-columns that show the variation of resistance with varying slenderness. A parametric study is carried out whereby cross-sectional shape, type of loading, slenderness and steel grade are varied. It is concluded that the method gives similar levels of safety as the methods prescribed in clauses 6.3.1 to 6.3.3 of Eurocode 3, part 1-1.     

The European standard family and its basis

The Eurocodes as European unified design rules for structures are part of the European Standard Family comprising also product standards, testing standards, standards for execution, European Technical Approvals and European Technical Approval Guidelines.A key feature of all these standards is consistency that has been obtained by consistent definitions of material and product properties and by basing any calculative way of defining structural properties on test evaluations.As a consequence all rules in Eurocode 3 are justified by test evaluations with a standardised method that introduced full transparency into the harmonisation works and allowed new innovative design approaches.Some examples for determining characteristic values of actions and combination factors for actions as well as for determining characteristic values and design values of resistances, in particular for the rules for choice of material to avoid brittle fracture, the harmonisation of various types of stability checks and the new interpretation of the plate buckling rules highlight the benefits of the standardised evaluation method.     

Aeroelastic divergence and flutter: Critical comments on the regulations of EN 1991-1-4

The European wind-load standard EN 1991-1-4 (2010) contains regulations that deal with aeroelastic instabilities of structures. These are discussed and commented on in this article. Numerical calculations are used to corroborate the comments. It is shown that some of the regulations do evidently not provide generally applicable criteria to avoid aerolastic instabilities. On the basis of the statements made in this article, a modified text is proposed for the standard. A numerical example serves to explain the regulations regarding aeroelastic divergence.     

Einführung in die Neuausgabe von DIN 1045-1

Introduction in the New Edition of DIN 1045-1 Resulting from editing of the National Annex of the new European design standard for concrete structures Eurocode 2 and under consideration of experiences with the use and interpretation of the German design standard a consolidated new edition of DIN 1045-1 is published in 2008. In this paper the changes and their backgrounds in the new edition of DIN 1045-1 are explained. This paper will clarify the new or changed rules for – the moisture classes because of alkali-silica-reaction (ASR) – the concrete cover – the effective creep coefficient – the temperature intervals for steel characteristics – the minimum shear resistance – the shear interfaces – the increase of shear for punching at wall-end and -corner – the reinforcing steel fatigue characteristics – the crack width limiting minimum reinforcement for thick members – the transverse reinforcement in the lap zone and at columns – the ductility reinforcement     

Interaction of bending and axial compression of stainless steel members

The paper deals with the buckling behaviour of stainless steel members with the main focus on developing design formulae for use in the latest version of the European Standard EN 1993-1-4: Eurocode 3-Design of steel structures-Part 1-4: General rules — Supplementary rules for stainless steel. Brussels; 2005.It is based on numerical simulations of single span members of various section type, which are subjected to axial compression and bending. Both flexural buckling and lateral-torsional buckling are dealt with so that the buckling behaviour of both I-sections and hollow sections can be covered.On the basis of these numerical results interaction factors have been derived in context with the design model for member design in Eurocode 3-1-1. For statistical evaluation the test results available from other authors have been used.The outcome of this investigation has been incorporated in the present EN 1993-1-4 as a recommendation in restricted form.     

建筑材料燃烧性能分级方法的新发展

世界各国均有各自关于建筑材料燃烧性能的分级方法，欧盟颁布了建筑材料（或制品）燃烧性能分级方法（EN13501-1），它是对材料燃烧性能分级方法的一个新发展，它比较科学和系统地对燃烧性能，包括烟密度和燃烧滴落物，进行了分级。     

新版绿建规范电气条文解析

新版GB/T50378—2014《绿色建筑评价标准》于2015年初实施,虽然规范补充了条文说明及技术细则,但执行实施中仍然有令人产生困惑的歧义之处。对新版标准中20项涉及电气专业的条款,按照条文内容、评审依据、评审要点进行解析。     

EN 1993-1-1《欧洲钢结构设计规范》有限元整体分析法介绍及应用

伴随着有限元和非线性理论及分析软件在理论及实际工程中的发展,EN 1993-1-1(2005)《欧洲钢结构设计规范》中引入了有限元整体分析方法(General Method)。可以方便工程师运用有限元分析软件分析复杂的结构构件(单轴对称,锥形工字钢断面)及复杂的框架体系。详细介绍有限元整体分析方法的内容,并通过实例详述该方法。采用ABAQUS及开源软件PYTHON.C++计算条文中所列出的参数。     

Erdbebenbemessung von Stahlbauten nach neuer DIN 4149‐1

Seismic design of steel structures acc. to DIN 4149‐1. The new German seismic design code published in April 2005 prescribes – compared with the former code – a lot of new design and detailing rules. In this paper the main design methods and specific rules for steel structures are presented with the focus on practical use.     

解读拉维莱特公园--新型城市公园的探索理想

文章立足于讨论拉维莱特公园作为欧洲近现代景观设计的代表作之一的独特的设计理论,其看似合理的“游戏规则”却经历了非理性的生成过程。这个具有创新的景观公园设计,解决了必要的城市结构的问题,探索出城市与建筑的重叠研究方法。作为一个大型城市公园,拉维莱特公园更多地适应新的城市活动,为现代景观设计注入新的血液,提出了新的设计理念。