某重型钢结构厂房设计

该工程为带有多层行车的重型钢结构厂房,竖向构件采用钢管混凝土格构柱+H型钢柱,屋面采用变截面钢梁。这里主要介绍该工程的结构设计思路、构造要求、计算依据和结果,还对钢管混凝土格构柱的设计做了较深入的阐述并对其经济性提出了一些看法。     

某重型钢结构厂房及试车平台设计与分析

以某大型压缩机实验厂房为例,介绍重型钢结构厂房以及试车平台的结构设计,通过有限元软件进行设计计算及校核,主要结构为钢管混凝土格构柱、钢梁、吊车梁系统和试车平台。     

某重型工业厂房结构选型分析和应用

结合工程实例,对于典型重型工业厂房的结构设计选型进行分析。通过模型计算,比较了钢格构工字柱、4管钢管混凝土柱和2管钢管混凝土柱3种柱系统的结构性能和经济指标,最后确定采用2管钢管混凝土柱。简洁的钢管混凝土体系增加了厂房有效使用面积,综合效益明显。     

某重型钢结构厂房设计与分析

以钜星锻压100 t桥式吊车重型钢结构厂房为例,介绍关于重型钢结构厂房的结构、典型节点的设计与思路。通过有限元软件进行设计与校核。主要结构为格构柱＋变截面钢梁,围护结构采用轻型的屋面和墙面,正式投入使用以来,运行良好。     

某风电设备研发中心特重型钢管混凝土结构试验厂房设计研究

结合某工程实例,针对重型钢管混凝土结构厂房总体结构选型、节点形式、控制指标等进行了分析研究。下柱采用独特的四肢钢管混凝土结构,运用SAP2000和PKPM/STPJ软件对主刚架及构件进行计算对比,并对肩梁、梁柱弧形加腋连接等复杂节点进行了有限元分析,给出与简化计算的差别,为类似工程积累了设计经验。     

钢管混凝土结构在重型工业厂房中的应用

以某重型机器厂重型粗加工项目为例,通过对多方案结构选型的一系列计算,对＂钢管混凝土格构柱＋实腹钢梁＂的钢框架结构设计进行了深入探讨,从而为类似重型厂房结构设计积累经验。     

某重型钢结构厂房结构设计特点综述

本文介绍了某重型钢结构厂房结构设计的新特点,对桩基选型、吊车梁、格构柱肢等重要结构构件的设计进行分析对比,可供同行交流。     

某钢结构厂房大型钢柱吊装技术

森松重工（江苏）有限公司主厂房为全钢结构单层厂房,厂房总建筑面积4×104 m2,总用钢量1×104 t.该工程钢柱为钢管格构式,柱距最大的达25.8 m,单根钢柱最重达90 t（截面长3.12m,宽2.52m,柱高43.55 m）,高耸且大吨位的钢柱安全平稳地吊装固定需要充分的吊前准备、详细的验算和严密的过程控制.文章就吊装最大钢柱的吊装技术进行阐述.     

带双层吊车的大柱距重型钢结构厂房设计

以某风电装配厂装配车间为例,介绍重型单层钢结构厂房的设计。该项目位于临海强风、高烈度地区,最大跨度36 m,最大柱距28 m,带双层吊车,最大吨位500 t,具有建设场地自然条件差、大跨度、大柱距、大吨位双层吊车等特点。论文主要介绍厂房柱系统、吊车梁系统以及制动系统的设计,重点关注吊车梁变截面做法等。建设和后续使用情况表明,该厂房的设计安全、经济、适用,为类似钢结构厂房的结构设计提供一定的参考。     

火灾下钢管混凝土构件温度内力分析与实用计算

本文根据任意应力—温度途径下混凝土受压本构关系,给出了火灾下钢管混凝土构件温度内力的分析方法通过大量计算,得到了火灾下两端嵌固钢管混凝土构件温度内力的简化计算公式。     

钢管混凝土拱桥计算理论研究进展

综述了钢管混凝土拱桥设计计算理论的研究进展,着重刚度取值、内力计算、应力计算与验算、极限承载力验算、局部受力计算、稳定计算与验算、变形计算与验算和动力性能分析等,同时指出存在的主要问题和今后努力的方向。     

Design of hollow and concrete filled steel and stainless steel tubular columns for transverse impact loads

The behaviour of hollow and concrete filled thin-walled steel tubular members subjected to transverse impact was previously investigated experimentally and theoretically. The members were restrained axially and rotationally at their ends. In this paper the study is extended to investigate nominally identically sized stainless steel tubes, tested experimentally under the same conditions. Comparisons between the performance of the two materials are made. Both the steel and stainless steel tubular members, hollow and concrete filled, are then modelled numerically. The FE models are validated against the experiments, and subsequently extended to investigate the general behaviour of such members when used as columns or other axially load bearing structures. The influences of axial pre-load, rotational restraint at the member ends, axial restraint, metal material properties and concrete filling, are investigated. In particular, their effect on the capacity of the members to absorb transverse impact energy. A general design procedure for metal tubular members with or without concrete filling subjected to transverse impact is developed, in a format aligned with current static structural steel specifications.     

钢管混凝土有限元分析进展

简要总结了近年来国内学者采用有限元法研究钢管混凝土力学性能的部分成果,并指出随着高强度、高性能材料的逐步应用,对钢管混凝土结构力学性能的研究将继续深入,而有限元法作为分析该结构的有效工具将得到更广泛的使用。     

Experimental study on concrete filled elliptical/oval steel tubular stub columns under compression

A concrete filled elliptical/oval steel tubular (CFEST) member consists of elliptical/oval steel tube and in-filled concrete. The CFEST member is a new type of steel–concrete composite member and is part of a family of concrete filled steel tubular members known as CFT. The present study aims to investigate, experimentally, the characteristics of CFEST stub columns under centric loading. The main test parameters selected are diameter-to-thickness and diameters ratios of elliptical/oval steel tube. From the results, local buckling of the elliptical/oval steel tube associated with shear failure of in-filled concrete could be observed. Axial loading capacity decreased as diameter-to-thickness ratio increased. Whereas, those capacities normalized by the summation of the individual strengths, namely the elliptical/oval steel tube and in-filled concrete strengths, are regulated in case the diameter-to-thickness ratio becomes larger. Finally, a method to predict the axial loading capacity induced by confinement effects of the in-filled concrete is proposed.     

深圳市芙蓉大桥设计

介绍了深圳市芙蓉大桥桥型方案的选择,桥梁结构设计技术标准。详细叙述了主桥的设计主要内容,施工加载顺序及主要施工阶段稳定分析数据,为类似桥梁的结构设计提供了成功的经验。     

Fire behaviour of concrete filled elliptical steel columns

In this work, a non-linear three-dimensional finite element model is presented in order to study the behaviour of axially loaded concrete filled elliptical hollow section (CFEHS) columns exposed to fire. This study builds on previous work carried out by the authors on concrete filled circular hollow section (CFCHS) columns both at room temperature and in fire. The numerical model is first validated at room temperature against a series of experiments on CFEHS stub columns available in the literature and subsequently extended to study the performance of slender columns at elevated temperatures. The aim of this work is to understand and represent the behaviour of axially loaded CFEHS columns in fire situations and to compare their effectiveness with that of the circular concrete filled tubular (CFT) columns. Parametric studies to explore the influence of variation in global member slenderness, load level, cross-section slenderness and section size are presented. Finally, guidance on the fire design of CFEHS columns is proposed: it is recommended to follow the guidelines of Clause 4.3.5.1 in EN 1994-1-2, but employing the flexural stiffness reduction coefficients established in the French National Annex with an equivalent EHS diameter equal to P/π, where P is the perimeter of the ellipse.     

钢管混凝土结构及其在我国桥梁中的应用

在介绍钢管混凝土结构特点的基础上,分析了该结构的优点及目前的计算理论和方法,论述了钢管混凝土在桥梁结构中的应用现状和目前急需解决的问题,从而取得良好的经济效益和建筑效果。     

Post-fire behaviour of concrete-filled steel tubular column to axially and rotationally restrained steel beam joint

This paper presents a numerical investigation on the post-fire behaviour of concrete filled steel tubular (CFST) column to restrained steel beam joint. An entire loading and fire phase, including ambient loading, heating with constant loads, cooling with constant loads and post-fire loading, was employed in the numerical analysis, and a finite element analysis (FEA) model was built to simulate the behaviour of CFST column to axially and rotationally restrained steel beam joints with external diaphragm connections under the entire loading and fire phase. For validation, the proposed modelling method was used to predict the test results of CFST columns and joints in fire and post-fire. The comparison demonstrates that the accuracy of the proposed FEA model is acceptable. Afterwards, the FEA model was used to analyse the mechanics characteristics of CFST column to restrained steel beam joints in the entire loading and fire phase. Based on the numerical analysis, the joint moment versus relative rotation angle relationship in the entire loading and fire phase was addressed, and the residual joint strength index and stiffness index were defined to evaluate the post-fire performance of joints. Finally, simplified calculating formulas were proposed to calculate the two indexes, which provide a simply and feasible method to evaluate the post-fire performance of external diaphragm joints in the CFST column - steel beam framed structure.