scholarly journals Rationality Analysis of High-rise Building Structure Calculation un- der SATWE Procedure

1970 ◽  
Vol 1 (1) ◽  
Author(s):  
Fan Guiqing
Keyword(s):  
Structural Design ◽  
Structural Model ◽  
Design Procedure ◽  
Design Parameters ◽  
Land Resources ◽  
High Rise ◽  
Structural Problems ◽  
Seismic Force ◽  
Structural Calculation ◽  
Capital Construction

In recent years, with the increasing shortage of land resources in our country, in or der to make full use of limited land resources, the development of construction industry is developing towards high-rise and super-high-rise buildings.This is based on the use of structural design and structural calculation of building structures with the higher requirement. For structural designers, the structural model is determined reasonably, the structural design procedure is used correctly, the design parameters and seismic force parameters are accurately input, the results are correctly analyzed and the structural calculation model is adjusted according to the calcu- lated results. Repeated adjustments in order to design safe high-rise buildings, so that the capital construction investmenthas been rationally used. In this paper, how to use the SATWE program developed by China Academy of Building Science to study the structural calculation and structural problems, how to analyze the calculation results and use the calculated results to reflect the problem and then adjust the structural model and other issues to study.

Development of Structural Design Guidelines for Porous Asphalt Pavement

2018 ◽  
Vol 2672 (40) ◽  
pp. 197-206 ◽  
Author(s):  
Kevin D. Hall ◽  
Charles W. Schwartz
Keyword(s):  
Structural Design ◽  
Design Procedure ◽  
Field Performance ◽  
Design Guidelines ◽  
Empirical Approach ◽  
Asphalt Pavements ◽  
Design Parameters ◽  
Extensive Literature ◽  
Porous Asphalt ◽  
Design Procedures

Porous asphalt pavements allow designers to introduce more sustainability into projects and lessen their environmental impact. Current design procedures are based primarily on hydrologic considerations; comparatively little attention has been paid to their structural design aspects. As their use grows, a design procedure and representative material structural properties are needed to ensure that porous pavements do not deteriorate excessively under traffic loads. The objective of this project was to develop a simple, easy to apply design procedure for the structural design of porous asphalt pavements. Two methodologies were considered for such a structural design procedure: ( a) the 1993 AASHTO Pavement Design Guide empirical approach, and ( b) the mechanistic–empirical approach employed by the AASHTOWare Pavement ME Design software. A multifactor evaluation indicated the empirical 1993 AASHTO design procedure to be the most appropriate platform at this time. It is noted, however, that both design procedures lack validation of porous asphalt pavements against field performance. AASHTO design parameters and associated material characteristics are recommended, based on an extensive literature review. For “thin” open-graded base structures (12 in. or less), the AASHTO procedure is performed as published in the 1993 Guide. For “thick” base structures (>12 in.), the base/subgrade combination is considered a composite system which supports the porous asphalt layer; an equivalent deflection-based approach is described to estimate the composite resilient modulus of the foundation system, prior to applying the 1993 AASHTO design procedure.

Problems of Optimal Structural Design

1968 ◽  
Vol 35 (1) ◽  
pp. 102-106 ◽  
Author(s):  
W. Prager ◽  
J. E. Taylor
Keyword(s):  
Structural Design ◽  
Design Procedure ◽  
Elastic Stiffness ◽  
Uniform Method ◽  
Design Parameters ◽  
Maximum Stiffness ◽  
Subsequent Determination ◽  
Elastic Design ◽  
Optimal Plastic Design

The paper presents a uniform method of treating a variety of problems of optimal design of sandwich structures. The design procedure consists of two steps: The integration of an optimality condition, which is a differential equation for the optimal displacement field that does not involve any design parameters, and the subsequent determination of the optimal distribution of elastic stiffness or plastic resistance from the usual differential equations of the structure. Optimal elastic design for maximum stiffness, maximum fundamental frequency, or maximum buckling load, and optimal plastic design for maximum safety are treated as examples.

Structural Design and Optimization of a 3-Axis Miniaturized Machine Tool with High Precision Positioning Stages

2007 ◽  
Vol 339 ◽  
pp. 321-326
Author(s):  
J.H. Lee ◽  
Wei Wang ◽  
Sung Hwan Kweon ◽  
Young Shin Kim ◽  
Young Moon Lee ◽  
...  
Keyword(s):  
Machine Tool ◽  
Structural Design ◽  
Evaluation Method ◽  
Error Function ◽  
Design Procedure ◽  
Design Parameters ◽  
Volumetric Error ◽  
Design And Optimization ◽  
Suitable Structure ◽  
Previous Design

The procedure of structural design on miniaturized machine tool (mMT) is proposed and structural optimization by applying robustness evaluation method is presented in this paper. The design procedure of a kind of mMT which is a 3-axis miniaturized milling machine tool (mMMT) is discussed and three different structures of mMMT are proposed based on previous design procedure. The most suitable structure is selected using robustness evaluation method, which is Taguchi method, due to volumetric error function. The design parameters of selected structure are optimized.

scholarly journals Some Remarks on the Choice of Ductility Class for Earthquake-Resistant Steel Structures

2013 ◽  
Vol 21 (3) ◽  
pp. 1-10
Author(s):  
Miroslava Matejčeková-Farhat ◽  
Rudolf Ároch
Keyword(s):  
Structural Design ◽  
Design Procedure ◽  
Steel Structures ◽  
Design Parameters ◽  
Eurocode 8 ◽  
Design Practice ◽  
Earthquake Resistant ◽  
Earthquake Resistant Structures ◽  
Design Requirements ◽  
National Practice

Abstract The implementation of the Eurocodes in current structural design practice has brought about a new emphasis on the design of earthquake-resistant structures. In some European countries, new earthquake zones have been defined; henceforth, the design requirements of many ongoing projects have changed as well. The choice of the ductility class of steel structures as one of the key design parameters, the consequences of this choice on design procedure, and some applications of the Eurocode 8 design criteria by comparing French and Slovak national practice are discussed, using a practical example of a structure.

scholarly journals Normative and methodological principles for transverse webs structural design as applicable to cargo tank area of double hull oil tankers

2020 ◽  
Author(s):  
К.В. Плотников
Keyword(s):  
Design Process ◽  
Structural Design ◽  
Design Procedure ◽  
Direct Analysis ◽  
Design Parameters ◽  
Element Analysis ◽  
Structural Rules ◽  
Functional Relations ◽  
Oil Tankers ◽  
Double Hull

Статья посвящена вопросам проектирования поперечных танкерных рам крупнотоннажных нефтеналивных судов, размеры корпусных конструкций которых должны соответствовать требованиям Общих Правил МАКО (CSR). Требования Правил CSR можно разделить на общие нормативные предписания аналитико-эмпирического характера (prescriptive-требования) и требования к выполнению проверочных расчётов (в первую очередь с использованием МКЭ). В работе рассмотрены алгоритмы проектирования поперечных рам нефтеналивных судов в соответствии с prescriptive requirements, а также предложена методика и алгоритм проектирования таких конструкций, включающие и МКЭ-анализ, которые могут использоваться в практике конструкторских бюро. Приведено обоснование необходимости анализа и обобщения проектных решений в части рамных конструкций на реальных судах, которые могут быть использованы при разработке специализированного программного обеспечения. Поскольку напряжённо-деформированное состояние рамной конструкции зависит от соотношения характеристик изгибной жесткости составляющих её балок, целесообразным является построение алгоритма проектирования, частью которого является решение оптимизационно-поисковой задачи определения требуемых размеров конструкции. Ограничения такой задачи должны формироваться на основе общих требований CSR. В тексте приведено описание нормативных требований и основные их особенности. Кратко описаны возможные варианты постановки задачи и соображения о программной реализации её решения. The paper deals with principal considerations of double-hull oil tankers primary supporting members (PSM) structural design, which meets the requirements of Common Structural Rules (CSR). The algorithms of structural design procedure for different typical arrangements of tankers are considered in the paper. The study shows main features of structural design process that lead to complexity of functional relations. As CSR requirements consist of prescriptive requirements and direct analysis requirements (that usually means finite element analysis) the suggested algorithms include both of these stages. The text explains the need of statistical data of existing designs collecting. Such data includes ratios between required and actual web depths, scantlings of brackets, ratios between moments of inertia of PSM and some others. This data can be used in structural design process and form the limitations of design parameters. As shear forces and bending moments in primary supporting members depend on ratios of its bending stiffness and relation between design parameters are rather complicated it is appropriate to use mathematical programming models, which present a decision support instrument. There are many ways of formulation and implementation of structural design task, and the paper gives general considerations about it. The brief review of previous contributions on this subject is also given.

Effect of Bay Spacing on Design Parameters of RC Structures Subjected to Lateral Loads

2021 ◽  
Vol 7 (3) ◽  
Author(s):  
A. Vimala ◽  
A. Vimala
Keyword(s):  
Structural Model ◽  
Design Parameters ◽  
Frame Structures ◽  
Optimal Size ◽  
Lateral Loads ◽  
Base Shear ◽  
Structural Configuration ◽  
Rc Structures ◽  
High Rise ◽  
Computer Based

Structural configuration is one of the important parameters to control the performance of multi-storeyed structures subjected to lateral loads. On other hand, also the economy of multi-storeyed structures depends on the spacing of columns. The present investigation is aiming to find the effect of bay spacing on the performance of medium to high rise RC structures subjected to lateral loads. In this regard, a computer- based analysis is carried out for 10, 15, 20, 25 and 30 storied bare frame structures. Each structure performance under lateral loads is investigated for 4 types of bay spacing i.e. 5m, 6m, 7.2m and 8.64m, with an increment of 20% bay space each time. For each structural model, the behaviour of the structure is examined in terms of storey displacement, storey drift and base shear. The quantitative parametric comparison is done between all the models mentioned and has identified the optimal size of the bay spacing to suit the aspect ratio of the structure is proposed.

Reliability and Robustness Based Design Attributes for Multi-Criteria Decision Making

2013 ◽  
Author(s):  
Vedran Žanić ◽  
Karlo Pirić ◽  
Stanislav Kitarović
Keyword(s):  
Design Methodology ◽  
Structural Model ◽  
Design Procedure ◽  
Design Parameters ◽  
Design System ◽  
Concept Design ◽  
Design Attributes ◽  
Standard Design ◽  
Reliability And Robustness ◽  
Panel Design

Novel design methodology with inclusion of reliability and robustness-based design criteria is presented. Robustness is defined as the insensitivity of a design attribute to uncontrollable design parameters. The developed design procedure for the concept design phase is divided into two basic, coordinated tasks: (1) multi-criteria topology/geometry optimization of the ship structural model; (2) scantlings / material multi-criteria optimization of structural panels. Reliability criteria and robustness of design attributes are applied as relative measures of quality, besides standard design attributes such as costs and weight. They are used in generation of Pareto-optimal design variants. Reliability attributes used for the panel design are compared with respect to fidelity and computational efficiency. A novel method for fast reliability calculations is presented using dimension reduction method (DRM) as implemented into FASTREL software. The method is verified with respect to accuracy and speed on the box girder design and panel design with CalREL methods (MC, FORM). The design procedure steps are executed in the predefined sequence of design sub-problems, using the fast and balanced collection of analysis and synthesis modules/methods of the MAESTRO/OCTOPUS design system. They are as follows: • Probabilistic determination of design loads; • Calculation of the structural serviceability and ultimate strength criteria on the panel (macro-element) level; • Calculation of the cross section ultimate longitudinal strength criterion; • Calculation of reliability and robustness measures on the panel level (safety) and on the global level. Other design attributes (initial cost, structural weight, etc.) are also determined; • Generation of the Pareto frontier for the selected test structure based upon the cost–safety design paradigm; • Generation of insight into the multilevel optimization process with graphic presentation of designs in design and attribute spaces. Practical application of the developed concept design methodology and of the design environment to the structural design of modern multi-deck ship elements (panels) is presented for verification/validation of accuracy and speed of FASTREL module.

scholarly journals Seismic Design of Steel Moment-Resisting Frames with Damping Systems in Accordance with KBC 2016

2019 ◽  
Vol 9 (11) ◽  
pp. 2317
Author(s):  
Seong-Ha JEON ◽  
Ji-Hun PARK ◽  
Tae-Woong HA
Keyword(s):  
Nonlinear Response ◽  
Damping Ratio ◽  
Design Procedure ◽  
Period Change ◽  
Reduction Factor ◽  
Design Parameters ◽  
Efficient Design ◽  
Moment Frames ◽  
Seismic Force ◽  
Damping Systems

An efficient design procedure for building structures with damping systems is proposed using nonlinear response history analysis permitted in the revised Korean building code, KBC 2016. The goal of the proposed procedure is to design structures with damping systems complying with design requirements of KBC 2016 that do not specify a detailed design method. The proposed design procedure utilizes response reduction factor obtained by a limited number of nonlinear response history analyses of the seismic-force-resisting system with incremental damping ratio substituting damping devices. Design parameters of damping device are determined taking into account structural period change due to stiffness added by damping devices. Two design examples for three-story and six-story steel moment frames with metallic yielding dampers and viscoelastic dampers, respectively, shows that the proposed design procedure can produce design results complying with KBC 2016 without time-consuming iterative computation, predict seismic response accurately, and save structural material effectively.

scholarly journals Model Analysis and Optimization of BIM Technology in High-rise Shear Wall Residential Structure

2019 ◽  
Vol 267 ◽  
pp. 02001
Author(s):  
Liangli Xiao ◽  
Yan Liu ◽  
Zhuang Du ◽  
Zhao Yang ◽  
Kai Xu
Keyword(s):  
Structural Analysis ◽  
Collaborative Design ◽  
Structural Model ◽  
Structural Information ◽  
Shear Wall ◽  
Structure Design ◽  
Secondary Development ◽  
Optimized Design ◽  
Analysis Model ◽  
High Rise

This study combines specific high-rise shear wall residential projects with the Revit to demonstrate BIM application processes. The use of R-Star CAD may help to realize the link barrier of the building information model and the structural analysis software PKPM. Sequentially, the information supplement of the structural analysis model is completed by extracting the structural information with the Revit secondary development. By the collaborative design platform based on BIM technology, the paper examines the collision check of structural model, conducts collision analysis on other professional models and modifies the design scheme for conflict points. After the statistics of material usage, an optimized design is proposed. The findings of this paper could contribute to provide some reference for the specific application of BIM in structural design and realize the application of BIM technology in the process of building structure design.

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