50t吊车门式刚架的设计

介绍了50 t吊车门式刚架,在设计时对结构选型、设计参数、刚架梁柱截面、支撑布置、吊车梁等方面采取了具体措施,保证了该结构设计的可行性。     

轻型钢结构吊车梁设计方法及节点构造

通过分折和研究单层门式刚架轻型钢结构厂房中的吊车梁设计，总结了轻型钢结构吊车梁的设计方法和节点连接构造，对合理设计吊车梁，降低用钢量提出了设计建议。     

有吊车作用门式刚架轻钢厂房的结构设计

结合实际工程，介绍了有吊车作用厂房结构的基础设计，门式刚架结构设计，以供类似工程设计参考。     

5 t吊车门式刚架结构设计

对5t吊车门式刚架在设计时对设计参数的控制以及结构选型、结构平面布置、支撑系统的布置、吊车梁的选择等方面进行了介绍,保证结构设计的可行性.     

首秦4300mm宽厚板轧机工程钢结构厂房设计

结合工程实例讨论了多跨单层钢结构厂房的结构设计，采用门式刚架与传统框排架结构相结合的结构类型，使厂房结构布置更合理；根据工程特点，恰当地设置厂房纵向温度缝，且优化了吊车梁设计，最终节省了钢材。     

门式刚架在单层轻型工业房屋的设计要点与应用

主要介绍了门式刚架的结构型式、特点及其屋面、柱、梁及节点设计，并简要介绍了PKPM—STS计算软件在门式刚架的计算应用，通过实例说明了门式刚架在单层轻型工业房屋的应用情况。     

轻钢门式刚架设计中的几个概念设计问题

介绍了门式刚架的适用范围及特点，讨论了门式刚架设计中的几个概念设计问题，并提出合理化建议。     

门式刚架跨度与柱距的优化设计

门式刚架作为一种房屋结构形式 ,用途十分广泛 ,特别近几年来 ,随着我国彩色钢板产量的增加和H型钢的出现 ,经济、快捷的建筑结构体系—门式刚架轻钢房屋结构在我国大量涌现。1　刚架柱间距的合理布置刚架的间距与刚架的跨度 ,与屋面荷载、檩条的形式等因素有关。大量计算发现 ,随着柱距的增大 ,刚架用钢量的比例是趋于逐渐下降的趋势。但当柱距增大到一定数值后 ,刚架用钢量随着柱距的增大下降的幅度较为平缓。而其他构件 ,如檩条、吊车梁、墙梁等用钢量随着柱距的增大而增加。就房屋的总用钢量而言 ,随着柱距的增大先下降而后上升。因此 …     

门式刚架轻钢结构设计形式及特点分析

门式刚架轻型钢结构房屋由于具有质量轻、工期短、柱网布置灵活等优点,受到越来越广泛的应用。当前,在门式刚架轻钢结构设计中存在着一些问题,需要我们认真进行研究分析,通过采取科学有效的措施加以解决,为此工程设计人员要充分理解其结构和建造特点,在设计中必须严格遵守规范标准和相关要求,确保门式刚架轻钢结构的建设质量,使其安全性和经济性得到更好地保障。本文针对门式刚架轻型房屋钢结构技术的发展优势及设计问题进行探讨,从而针对性的提出相应的优化方法,系统总结我对门式刚架轻型房屋钢结构设计的一些看法,希望能够为今后设计提供一些经验。     

门式刚架轻型钢结构厂房设计参数控制

门式刚架轻型钢结构厂房优势突出,但在工程中经常存在设计、结构等方面的不合理。根据设计经验,总结了门式刚架轻型钢结构的选型、荷载取值以及厂房设计的参数控制和参考指标等。     

Expanded Reliability-Based Design Approach for Drilled Shafts

This paper develops a more general reliability-based design approach for drilled shafts that formulates the design process as an expanded reliability problem in which Monte Carlo simulations (MCS) are used in the design. Basic design parameters, such as the shaft diameter (B) and depth (D), are formulated as discrete uniform random variables. Then the design process becomes one in which failure probabilities are developed for various combinations of B and D [i.e., conditional probability p(Failure∣B,D)] and are compared with a target probability of failure pT. Equations are derived for this expanded reliability-based design (RBDE) approach, and criteria are established for the minimum number of MCS samples to ensure a desired level of accuracy. Its usefulness is illustrated using a drilled shaft design example. This RBDE approach has the following advantages: (1) it gives results that agree well with current RBD designs, but it improves the resolutions of the designs; (2) it offers design engineers insight into how the expected design performance level changes as B and D change; (3) it gives design engineers the ability to adjust pT, without additional calculation effort, to accommodate specific needs of a particular project; and (4) it is transparent and “visible” to design engineers who are given the flexibility to include uncertainties deemed appropriate. Finally, the effects of uncertainties in the at-rest horizontal soil stress coefficient (K0) and allowable displacement (ya) are illustrated using this approach.     

高精度带材定尺横剪机设计实践中的问题探讨

对高精度带材定尺横剪机的市场需求和技术发展趋势作简要分析。结合实际设计工作实践,就高精度定尺横剪机剪切部分的方案与结构设计、刀片的结构参数与安装参数的确定、定尺夹送装置的设计等有关问题进行初步探讨。     

钢管三辊冷斜轧的轧辊辊型设计

根据钢管冷斜轧过程的变形特点，建立了辊型设计系统。把辊型设计的结果作为初始参数，由刚塑性有限元分析成型过程，将速度场、应变和应力反馈到辊型设计系统，调整辊型设计的初始参数，绘制出适应钢管冷斜轧工艺要求辊型图。     

Design∕Control Optimization of Cross‐Ply Laminates Under Buckling and Vibration

The optimal layer thicknesses and optimal feedback control function are determined for a symmetric, cross‐ply laminate. The objectives of the optimization are to maximize the biaxial buckling load (design objective) and to minimize the dynamic response to external disturbances (control objective) subject to a constraint on the expenditure of control energy. The design∕control problem is formulated as a multiobjective optimization problem by employing a performance index that combines the design and control objectives in a weighted sum. Numerical results are given for a laminate made of an advanced composite material. Comparisons of controlled and uncontrolled laminates as well as optimally designed and nonoptimal laminates indicate the benefits of treating the design and control problems in unified formulation. The implications of solving these two problems are discussed. The values of optimal design and control variables are given for a number of problem parameters.     

Beam-Column Design Equations for Wide-Flange Pultruded Structural Shapes

A simple procedure is developed for the selection of pultruded structural shapes to be used as beam-columns in structural design. The design equations are then validated by comparison with experimental data gathered during beam-column testing of wide-flange and I-beam pultruded structural shapes. The design procedure accounts for axial load eccentricity and bending action induced by lateral loads and end-moments. The design equations are set in the context of load and resistance factor design, considering both strength and serviceability. This paper addresses the methodology to determine the resistance factors, which should be used with properly selected load-factors accounting for the variability and uncertainty of the loads. The design equations use section-properties, such as the bending stiffness (EI), which must be measured and supplied by industry. It is found that the section-properties used in the design of beams and columns are sufficient for the design of beam-columns. Therefore, the cost and time involved in testing structural shapes are minimized. This paper also addresses the means by which section-properties can be generated effectively and inexpensively.     

液化石油气储配站工程设计

从主要设备选型、储配站接收和储存液化石油气、液化石油气汽化、调压工艺流程及站内设备、总图布置等方面介绍了液化石油气储配站的设计特点,并根据液化石油气的危险性特点,阐述了在设计过程中应注意的总图布置、建筑设计、工艺设备布置、工艺管道设计、电气设备设计、可燃气体检测、消防等安全问题。     

工字钢计算机辅助孔型设计

根据鞍钢大型厂工字钢生产的特点，研究了工字钢孔型的设计方法、优化方法、自动制图和数据库的建立，按照软件工种的方法，采用结构化和面向对象的软件分析和设计技术，建立了工字钢计算机辅助孔型设计（CARD）系统。该系统采用参数化设计，具有良好的人机交互界面和文件管理功能。     

多种谐波源环境中高通滤波器的应用

通过对一引进工程的二阶高通滤波器的设计特点进行分析，借鉴其设计优点，以开拓滤波设备的设计思路。     

热处理炉自行走式台车设计

以武钢某自行走式台车炉台车部分设计计算为例，从影响自行走式台车炉台车的设计参数人手，结合台车各关键部件的设计计算方法，初步探讨了自行走式台车炉台车设计方法及要点，为此类型台车设计提供了理论依据和参考。