冷弯型钢在建筑工程中的应用

简要介绍了冷弯型钢及在建筑工程中的应用情况。列举了冷弯型钢一些应用实例。阐述了冷弯型钢的特点及相关标准，提出了推广、应用冷弯型钢需解决的问题，展望了冷弯型钢在建筑工程的应用前景。     

冷弯型钢的产品系列及在建筑工程上的应用

如何在建筑工程中尽量推广采用冷弯型钢这种新型高效经济钢材，是冷弯生产厂和建筑设计部门应予高度重视的课题．本文就冷弯型钢的产品系列及在建筑工程上的应用问题作一探讨。     

信息动态

<正>建筑行业应大力推广应用冷弯型钢中国钢协冷弯型钢协会为了推动建筑领域应用冷弯型钢,更好的发挥冷弯型钢高效的经济特性,于1996年6月和1996年7月分别在北京、西安召开了冷弯型钢在建筑上应用研讨会.会议做出了以下决定和建议:1.调查了解国外有关公司进入我国的情况及具体经营形式,冷弯型钢在建筑工程中应用情况及市场预测.     

我国冷弯型钢结构发展现状及展望

就国内冷弯型钢结构理论和技术发展及工程应用现状进行了简要回顾和总结,包括冷弯型钢截面、材料及材性,基本构件设计理论和方法,冷弯型钢结构体系及工程应用,冷弯型钢结构抗震、抗火与抗风等防灾研究,冷弯型钢相关技术标准的发展历史与现状等。在此基础上,就冷弯型钢结构目前存在的问题和发展方向进行了探讨,为国内今后冷弯型钢结构的研究和工程实践提供参考。     

冷弯型钢钢管混凝土的应用研究

由于冷弯型钢具有焊缝少、制作简单等一系列优点，已在建筑结构中取得了广泛应用，本文首先探讨了冷弯型钢钢管混凝土存我国的应用前景，并简要介绍了福州大学最近进行的一批冷弯型钢钢管混凝土的试验和理论研究成果，最后建议了冷弯型钏钢管混凝上的构件承载力计算方法，供有关工程实践参考。     

冷弯型钢钢模板的设计

本文对冷弯型钢钢模板各组成部件的功能作用做了介绍，并对冷弯型钢钢模板的特点进行分析阐述，本文还对冷弯型钢钢模板的经济及社会效益进行了简单的分析。实践证明，该模板体系是一种满足节能减排要求的新型低碳化模架体系，冷弯型钢钢模板体系在新材料、新工艺、新技术应用上作出了开拓性的尝试，它的开发应用，引领着国内模板技术开发方向，对于推动技术创新、节能减排、环保施工、节约型施工方面起到了积极作用。     

冷弯薄壁型钢在钢模中的应用

随着钢模结构的发展,冷弯薄壁型钢的应用已经势在必行。在欧美等国家,广泛使用冷弯型钢代替热轧标准型钢。我们借鉴国外经验,在钢模设计中,也采用了冷弯薄壁型钢,代替标准的热轧型钢。我们首先在外墙板预制构件的窗模上做了试验,尔后,又在新设计的外墙板钢模的侧模上使用了冷弯薄壁型钢。使用冷弯薄壁型钢有如下优点:     

建筑业冷弯型钢应用现状和前景

冷弯型钢在建筑业应用中的特点，在国内外的应用现状，应用前景，分析了我国建筑业中冷弯型钢应用发展存在的主要问题及对策。     

冷弯型钢生产应用现状及发展建议

本文生产和应用冷弯型钢的优点和实例进行了论述,并对国内外发展冷弯型钢状况作了介绍,对国内今后发展冷弯型钢的方向提出了建议。     

冷弯型钢在轻钢建筑中的应用

冷弯型钢是以热轧或冷轧带钢为原料，在常温下冷拔压制或辊弯成型，而得到的各种断面开头的建筑用钢材。阐述冷弯型钢在１－２层轻型民用建筑，以工字型截面门式刚架为主的横向承重结构在大跨度公用建筑中的应用及冷弯型钢的特点。     

冷弯薄壁型钢檩条与墙梁的设计

介绍轻型钢结构门式刚架房屋中的檩条体系和墙梁体系.在这类房屋中,从经济和制作安装方便出发,一般都采用压型钢板屋面板和墙面板,檩条和墙梁也都采用带卷边的槽形和Z形截面的冷弯薄壁型钢.结合《门武刚架轻型房屋钢结构技术规程》(CECS102:98)的有关条文,主要介绍冷弯薄壁型钢檩条和墙梁的布置、计算和构造.     

Research on cold-formed steel columns

The paper summarises research on cold-formed steel columns performed by the author. Cold-formed steel members are either cold-rolled or brake-pressed into structural shapes. As a result, cold-formed steel open sections are usually singly-point- or non-symmetric. The most common types of singly-symmetric sections are channel and angle. The research focused on cold-formed steel open sections, such as plain and lipped channels, channels with simple and complex edge stiffeners as well as plain and lipped angles, and unequal angles. In addition, cold-formed steel built-up closed sections with intermediate stiffeners were investigated. Both experimental and numerical investigations into the strength and behaviour of cold-formed steel columns were conducted. The column strengths obtained from these investigations were compared with the design strengths obtained using various international standards for cold-formed steel structures. Furthermore, the behaviour and design of cold-formed steel lipped channel columns at elevated temperatures were also investigated. The paper also summarises the design recommendations for cold-formed steel columns.     

Inelastic behaviour and design of cold-formed channel sections in bending

The aim of this paper is to investigate the inelastic bending capacity of cold-formed channel sections, and provide design rules to account for such behaviour. An extensive experimental and analytical analysis of 42 cold-formed channel sections in three different geometric categories is conducted, including simple channel sections, channel sections with simple edge stiffeners and channel sections with complex edge stiffeners. The sections were cold-formed from G450 steel with nominal thickness of 1.6 mm, and varying theoretical buckling stresses ranging between elastic to seven times the yield stress. The results of the pure bending experimental investigations show that current international cold-formed steel specifications are conservative, for channel sections with low slenderness values. The experimental results are used to propose revisions to current international cold-formed steel specifications.     

Column tests of cold-formed steel non-symmetric lipped angle sections

The geometry of angle sections is simple, but the behaviour and design calculations of angle sections can be quite complicated. Furthermore, lipped angle sections with unequal flange widths form a non-symmetric section and the behaviour of the section is even more complicated than a singly-symmetric angle section with equal flange widths. A test program on cold-formed steel non-symmetric lipped angle columns is presented. The non-symmetric angle sections were brake-pressed from high strength structural steel sheets having nominal yield stresses of 450 and 550 MPa with plate thicknesses of 1.0, 1.5 and 1.9 mm. The material properties of the column specimens were obtained by tensile coupon tests. The behaviour and strengths of cold-formed steel non-symmetric lipped angle columns were investigated. The test strengths are compared with the design strengths calculated using the North American Specification for the design of cold-formed steel structural members. In addition, the current design rules in the North American Specification for cold-formed steel non-symmetric lipped angle columns are assessed using reliability analysis. It is shown that the design strengths are generally quite conservative.     

《门式刚架轻型房屋钢结构技术规程》综述

综合介绍《门式刚架轻型房屋钢结构技术规程》(CECS102:98),内容包括任务的提出、结构的特点、所用钢材和冷弯型钢、刚架和构件的变形限值、结构布置、蒙皮作用、制作和安装、涂装、排水和隔热等.     

Corner properties of cold-formed steel sections at elevated temperatures

This paper presents the mechanical properties of the corner parts of cold-formed steel sections at elevated temperatures. Light-gauge structural members are cold-formed which results the mechanical properties of the corner parts being different from the flat parts. However, previous research has focused on the investigation of the corner parts of cold-formed steel sections at normal room temperature and the performance of the corner parts at elevated temperatures is unknown. An appropriate model for fire resistant design of steel structures necessitates a correct representation of mechanical properties of structural steel at elevated temperatures. Therefore, experimental investigation on corner coupon specimens at different temperatures ranged from approximately 20 to 1000 °C was conducted to study the behaviour of the corner parts of cold-formed steel sections at elevated temperatures. Two kinds of corner coupon specimens, namely the inner corner coupon specimens and outer corner coupon specimens having the steel grade of G500 (nominal 0.2% proof stress of 500 MPa) and nominal thickness of 1.9 mm were tested. The test results were compared with the flat coupon specimens taken from the same cold-formed steel sections as the corner coupon specimens. A unified equation to predict the yield strength (0.2% proof stress), elastic modulus, ultimate strength and ultimate strain of the corner parts of cold-formed steel sections at elevated temperatures is thus proposed in this paper. Generally, it is shown that the proposed equation adequately predicts the test results of the corner coupon specimens. Furthermore, stress–strain curves at different temperatures are plotted and a stress–strain model is also proposed for the corner parts of cold-formed steel sections.     

轻型钢结构中梁及檩条稳定性的研究进展

本根据国内外研究现状．综述了新近轻型铜结构中梁及檩条稳定性方面研究的若干内容。首先简要介绍了目前轻钢结构的发展特点．然后着重就薄壁型铜梁及檩条的截面特性、屈曲行为及其研究方法以及稳定性方面研究的几个热点问题作了概述，最后总结了薄壁型钢梁及檩条稳定性方面有待进一步研究的内容。     

内填组合墙体钢框架的有限元分析

内填冷弯薄壁型钢组合墙体钢框架结构房屋是冷弯薄壁型钢住宅体系从低层向多层发展过程中产生的一种新型结构体系。本文对内填冷弯薄壁型钢组合墙体钢框架体系进行数值模拟,通过两种不同连接方式试件的比较,分析冷弯薄壁型钢组合墙体与钢框架之间的协同工作性能和剪力分配关系。     

带孔冷弯薄壁钢构件的屈曲研究(英文)

自20世纪40年代以来,带孔冷弯薄壁钢构件因为具有节省钢材且容易形成异型构件等优点而在全世界范围内得到广泛应用。但是早先的研究只局限于受压或受弯个别构件的弯曲屈曲研究。带孔冷弯薄壁构件的分析和设计相当复杂,尤其是当开孔形状及位置不规则时更是如此。从理论分析出发,并结合文献中给出的一系列试验资料,通过多个算例,介绍了带孔的和不带孔的冷弯薄壁钢构件弯扭屈曲和畸变屈曲的计算方法。     

冷弯型钢截面创新设计思路与方法探讨

冷弯型钢构件具有截面成型灵活、加工性能优越、连接固定方便等特点而被广泛应用于各类建筑结构体系之中,对其截面组成形式的探讨和材料最大限度的合理利用是人们长期关注的焦点之一.通过对C形截面在受荷过程中有效形心移动现象的分析,归纳出新型冷弯型钢截面的优化设计原则,参考系列文献,给出新型冷弯型钢截面的优化设计思路;根据新型冷弯...