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首页> 外文学位 >I. DELIGHT.STRUCT: A COMPUTER-AIDED DESIGN ENVIRONMENT FOR STRUCTURAL ENGINEERING. II. OPTIMAL DESIGN OF SEISMIC-RESISTANT PLANAR STEEL FRAMES.
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I. DELIGHT.STRUCT: A COMPUTER-AIDED DESIGN ENVIRONMENT FOR STRUCTURAL ENGINEERING. II. OPTIMAL DESIGN OF SEISMIC-RESISTANT PLANAR STEEL FRAMES.

机译：I. DELIGHT.STRUCT：结构工程的计算机辅助设计环境。二。平面抗震钢架的优化设计。

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摘要

The first report describes an expandable software system for optimization-based, interactive computer-aided design of structures. This system can be used for the design of statically and/or dynamically loaded structures which exhibit linear or nonlinear response.;The software is the union of: (1) an interactive base code for the management of the computer-aided design process named DELIGHT, (2) a dynamic nonlinear general purpose structural analysis package named ANSR, (3) a library of optimization algorithms specialized for the type of mathematical programming problems characteristic of structural design, and (4) specialized software for the design of seismic-resistant planar steel frames.;Flexibility has been emphasized in the development of this system so that a wide range of structural problems can be considered. The user describes his problem to the system by supplying a minimal amount of software or by selecting software from expandable libraries.;The second report presents a method for the seismic-resistant design of planar, rectangular braced or unbraced steel frames. An important feature of the method is that nonlinear step-by-step integration is used as the analysis technique within the design process itself.;The method directly quantifies the accepted seismic-resistant design philosophy that a properly designed structure: (1) resists moderate ground motion without structural damage, and (2) resists severe ground motion without collapse. Actual ground motion accelerograms are selected and scaled to levels representing moderate and severe ground motions. Constraints quantifying structural damage and limited non-structural damage are constructed for the case of moderate ground motion, along with constraints quantifying collapse and limited structural damage for the case of severe ground motion. In addition serviceability constraints are imposed on structural behavior under gravity loads only. Possible objective functions range from the minimization of structural volume to the minimization of response quantities such as story drifts or inelastically dissipated energy. Sophisticated optimization algorithms are utilized to solve the resulting mathematical programming problem.;The frame design method is illustrated by application to a 4-story, 3-bay moment-resisting steel frame. The practicality and reliability of the method for this example problem are assessed.
机译：第一份报告描述了一种可扩展的软件系统，用于基于优化的交互式计算机辅助结构设计。该系统可用于设计具有线性或非线性响应的静态和/或动态加载结构的设计。该软件是以下各项的结合：（1）交互式基础代码，用于管理名为DELIGHT的计算机辅助设计过程；（2）名为ANSR的动态非线性通用结构分析软件包，（3）专门针对结构设计特征的数学编程问题类型的优化算法库，以及（4）耐震平面设计的专用软件钢框架。在该系统的开发中强调了灵活性，因此可以考虑各种结构问题。用户通过提供最少的软件或从可扩展的库中选择软件来向系统描述他的问题。第二份报告介绍了一种用于平面，矩形支撑或不支撑钢框架的抗震设计方法。该方法的一个重要特点是在设计过程中将非线性逐步集成用作分析技术。该方法直接量化了公认的抗震设计哲学，即合理设计的结构：（1）抗中等强度地面运动而不会造成结构损坏；（2）抵抗剧烈的地面运动而不会坍塌。选择实际的地面运动加速度图并将其缩放到代表中度和严重地震动的水平。对于中等程度的地面运动，构造了量化结构破坏和有限的非结构破坏的约束，对于严重的地面运动，构造了量化崩溃和有限的结构破坏的约束。另外，仅在重力载荷下，可服务性约束仅施加于结构行为。可能的目标函数从最小的结构体积到最小的响应量（例如，故事漂移或非弹性耗散的能量）不等。利用复杂的优化算法解决了由此产生的数学程序设计问题。框架设计方法通过在4层，3槽抗弯钢框架上的应用进行了说明。评估了此示例问题的方法的实用性和可靠性。

著录项

  • 作者

    BALLING, RICHARD JACK.;

  • 作者单位

    University of California, Berkeley.;

  • 授予单位 University of California, Berkeley.;
  • 学科 Civil engineering.
  • 学位 Ph.D.
  • 年度 1982
  • 页码 226 p.
  • 总页数 226
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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