An Expert System for Tunnel Design

In this article, we describe the development of an expert system (ES) for tunnel design and preent some applications of the system. The system has been developed by our research group consisting of 21 people closely involved with the tunnel design under the leadership of Nagoya University. The system consists of four subexpert systems (1) ES for standard tunnel design methods, (2) ES for framed structure method, (3) ES for theoretical design methods, and (4) ES for numerical analysis design method; a common part to control the overall system; and two data base systems (tunnel data base system and rock mass data base system).     

浅议结构设计中概念设计

随着计算机技术和计算方法的迅速发展,结构设计人员越来越依赖计算软件。文章针对这种现象,提出结构概念设计的原则,对做好结构概念设计的方法提出建议,供结构设计人员参考。     

浅议建筑结构设计中的概念设计

随着建筑设计的不断发展,概念设计将成为建筑设计的一个趋势。在设计中,会更加考虑建筑结构的稳定、可靠性、经济性,在切实地提高建筑结构的稳固的前提下,收获更多的经济效益。因此,加强建筑结构设计中的概念设计是很有必要的。     

An Expert System for Evaluating Multicriteria Transportation Networks

An expert system is developed for evaluating transportation network improvement alternatives with multicriteria. The advantages of this system are 1) integrating data, transportation models, and evaluation methods within one framework; 2) applying multicriteria evaluation methods and choice rules for these methods onto various evaluation environments; and 3) providing a friendly man-machine interface. First, a transportation network improvement evaluation problem is specified. Then, an expert system is formulated. The relative data bases, model bases, and knowledge bases are described. Finally, a brief example is used to demonstrate the practicality of the system. The whole program is an integration of LOTUS 123, Turbo PROLOG and C language programs on an IBM personal computer.     

抗震概念设计在高层建筑结构设计中的应用

抗震概念设计是高层建筑结构设计中的重要内容,本文主要从多个角度对抗震概念设计在高层建筑结构设计中的应用等内容做了重点分析。     

概念设计在建筑结构设计中的重要性及应用分析

本文阐述了概念设计、概念设计的意义及设计依据;概念设计的一般原则、概念设计在建筑结构设计中的重要性,以及概念设计在建筑结构设计中的应用。     

抗震概念设计在高层建筑结构设计中的应用

抗震概念设计是高层建筑结构设计中的重要内容,本文主要从多个角度对抗震概念设计在高层建筑结构设计中的应用等内容做了重点分析。     

概念设计在建筑结构设计中的重要性及应用分析

本文阐述了概念设计、概念设计的意义及设计依据;概念设计的一般原则、概念设计在建筑结构设计中的重要性,以及概念设计在建筑结构设计中的应用。     

概念设计与结构措施在建筑结构设计中应用

通过优化设计建筑结构,来提升建筑实际使用寿命,改善建筑基础性能.在这样的环境下,结构设计中便引入了概念设计、有关结构措施,并以此改善主体结构基础性能、创新结构设计,进而确保整个建筑物的安全与质量.从某建筑工程出发,主要探讨了概念设计、结构措施及其在结构设计中的具体应用.     

Structuring Knowledge and Data Bases in Expert Systems for Integrated Structural Design

The integrated structural design includes preliminary design, structural analysis, and the final detailed design. A knowledge-based expert system for integrated structural design requires both symbolic processing of heuristics and experiential knowledge and numerical processing of algorithmic computations. In addition, such a coupled expert system must use existing data bases as well as a large variety of data created during a consultation with the system. Thus, considering their complex interaction, effective integration of symbolic processing, numerical processing, and data base management becomes a major concern in the development of expert systems for integrated structural design. This paper addresses this integration problem by presenting a prototype system, called FRAMEX, for design of a class of steel structures—regular multistory steel buildings. The basis of steel design is the recently developed Load and Resistance Factor Design Specification.     

A Knowledge-based Expert System for Design of Roof Trusses

Aknowledge-based expert system has been developed for design of roof trusses, called RTEXPERT. RTEXPERT can advise the user on the appropriate type of the roof truss, selection of the layout of the truss (such as the pitch of the truss and number of panels), and the loading. The basis of design is the American Institute of Steel Construction (AISC) specification. The truss is designed for dead, live, snow, and wind loads in accordance with the American National Standard Institute (ANSI) specification. A novel part of RTEXPERT is the automatic computation of nodal forces due to various loads. The user needs to indicate only the types of the materials used as roof covering and the location of the structure in the United States. RTEXPERT automatically generates all the nodal forces. The knowledge base and explanation facility of RTEXPERT have been developed using INSIGHT 2 + expert system shell. The mathematical computations, graphic algorithms, and data file manipulation routines have been developed in Turbo Pascal. RTEXPERT has a comprehensive graphic interface for displaying the truss configuration, cross sections, loading, and deformed shape. Information about individual members is presented through multi-window graphicstext displays. RTEXPERT can be used as an "intelligent assistant" for design of roof trusses.     

概念设计对建筑结构设计的重要性及其应用

在现代建筑设计领域中,如何更好更快更经济地实现建筑结构设计是关键问题,可以从概念设计的理念优化建筑结构设计。本文首先概述了概念设计基本理论,然后详细分析了概念设计在建筑结构设计中的重要意义以及创新应用对策。     

南海城市发展设计中公共交通体系的研究

通过南海城市发展研究和概念设计,对南海未来新的交通方式以及城市交通体系的优化组合进行了系统的探讨,从经济、节能、环保等方面论证了合理导入城市新轻快电车(LRT)优化公共交通组合的可行性。     

工程设计专家系统的研究

讨论设计型专家系统与诊断型专家系统的差别,比较两者不同的知识表示方式和求解策略,提出一种基于知识和算法的混合求解策略。这一求解策略已应用于我们开发的多个专家系统,并在实际工程应用中取得了满意的效果。     

An Expert System to Analyze Hazardous Intersections

The detailed analysis of highway locations that have been identified as hazardous within the framework of a state Highway Safety Improvement Program (HSIP) requires a great deal of time and money to perform. Given the limited resources available to state highway agencies, whose task it is to perform such analyses, it seems a worthwhile effort to automate this "location analysis." And, given the nature of location analysis problems, which are based on judgement rather than mathematical models, it was known a prior; that conventional automation techniques were not appropriate for this application. A prototype microcomputer-based expert system, which performs location analysis, was developed to assess the feasibility of applying this new technology to location analysis problems. This paper describes the prototype system, and presents a brief discussion of some of the issues that were addressed when building the system.     

An Expert System to Evaluate Concrete Pavements

"Pavement Expert" is an expert system developed to aid in the evaluation of concrete pavements. The system is operational on an IBM microcomputer. It guides the engineer through the evaluation procedure, ensures that it is carried out adequately, and that it can be independently repeated by other engineers. "Pavement Expert" operates in two modes: dialogue and data rogging modes. The dialogue mode is controlled by a Savoir shell which controls the dialogue between the user and the system. The system makes decisions "intelligently" concerning the length of the section to evaluate, extent and severity of the observed distresses, and calculates and stores the final indices. The data logging mode acts as an intelligent data logger recording specific observed distresses. This information is presented graphically on the screen, allowing for alterations to be made. The system consists of five stages ranging from identifying the road to providing a full report on the general condition of the pavement.     

Integrated Information Management Expert System For Structural Engineering of Buildings

Abstract: This paper describes the development of an integrated Information Management expert system (IMXpert) which enables structural engineers or architects to produce results of high quality within a short time in works related to the structural engineering of buildings. IMXpert gives various data or functions according to the user's request. The study can be divided into problem analysis and system design. For the systematic representation of building structure and the structural design process, an object-oriented design method has been used for the problem analysis. Various types of structural components and operations closely related to them have been extracted and defined as independent objects. The complete building structure and structural design process can be represented by combining these objects and operations. A centralized database has been designed for the consistent and integrated management of object instances.     

A Knowledge-Based System for Concrete Building Structural Design

Abstract: Knowledge representation approaches and knowledge base management strategies in the concrete building structural detail design system KJICAD are described. A load combination algebra system is developed for environmental loads formalization and a code-based problem-solving control structure is established to describe design knowledge sources and their relations. By using compiler techniques, the physical knowledge base is made uniform and simplified for quick access. Finally, a practical design example is included to illustrate the effectiveness of KJICAD.     

An Integrated Fuzzy Control System for Structural Vibration

Abstract:   Recently, numerous studies of structural control systems of civil structures and infrastructure have been carried out. To develop structural control systems, it is necessary to consider their special features such as complexity, uncertainty, and size. To consider these features, fuzzy theory has been applied to structural control systems. This study proposes an integrated fuzzy active control system based on fuzzy ensemble learning. It combines several fuzzy active control systems and improves structural vibrations caused by earthquakes. The proposed method includes two fuzzy active control systems, a fuzzy ensemble system, and a gating network. In this study, two fuzzy active control systems are constructed by applying particle–swarm optimization. The fuzzy ensemble system assigns a performance grade to each fuzzy active control system according to control effects from input patterns. The gating network determines the final control force based on the weight of their performance grade. By introducing fuzzy ensemble learning, the structural response is reduced more than when the response is controlled by individual fuzzy active control systems.     

2010年上海世博会日本产业馆结构“再利用”概念设计

2010年上海世博会日本产业馆建于原江南造船厂船体联合车间内,其结构设计贯彻"再利用"理念,采用新建柱下独立基础与原有厂房混凝土地坪协同工作的基础形式,钢结构连接节点尽量采用可拆卸的高强螺栓,使用过程中保留脚手架钢管作为结构抗侧力构件,实现了世博会多样化建筑特色、"再利用"基本理念、绿色环保以及结构设计经济安全的有效结合。