欢迎来到51Due,请先 | 注册
关注我们: 51due论文代写二维码 51due论文代写平台微博
英国论文代写,英国essay代写知名品牌微信

Paper代写范文

为您解决留学中生活、学习、工作的困难、疑惑
释放自我

Paper代写-The conceptual design

2018-08-07 | 来源:51due教员组 | 类别:Paper代写范文

下面为大家整理一篇优秀的paper代写范文- The conceptual design,供大家参考学习,这篇论文讨论了概念设计。概念设计,指的是一般不经过数值计算,尤其在一些难以做出精确性分析或在规范中难以规定的问题中,依据整体结构体系与分体系之间的力学关系,结构破坏机理等所获得的基本设计原则和设计思想,从整体的角度来确定建筑结构的总体布置和抗震细部措施。

conceptual design,概念设计,英国论文代写,论文代写,paper代写

The main task of the structural engineer is to design the overall scheme of the structure with the overall concept in the architectural space, and to make conscious use of the mechanical relationship between the general structure system and the basic sub-systems.

Habitual traditional design often gives structural engineers the illusion that structural design is "specification + calculation". Even today, with the rapid development of computers, it is simplified as "specification + integration computer structural design program". The result is to act as the operator of a patchwork of computer programs and to check against the constraints of the code, and at a certain point in the design of each project, feel a strange tiredness, irritability, even disgust. This and habits to do concept design of structural engineers that are always interested in continuously comparison, feedback and optimize their design, and when talking about their own design, and have been erected in buildings and structures on the earth is a pleasure, by contrast, remember there is always a kind of numbness, even the feeling of pain.

Advanced design ideas can be fully expressed through conceptual design. The main task of a structural engineer is to design the overall scheme of the structure with the overall concept in a specific architectural space, and to make use of the mechanical relationship between the general structure system and each basic subsystem consciously, rather than just to accurately calculate and analyze a given subsystem or component. In the book "structural concepts and systems", professor Lin tongyan, a famous academician of the American academy of engineering, provided a wide range of basic knowledge and design examples of structural concept design with unique insights for structural engineers.

Conceptual design is generally not through numerical calculation, especially in some difficult to make accurate analysis or in the specification in the regulation of the problem, based on the overall structure and the mechanical relation between points system, structure damage mechanism, damage, experiment phenomenon and the engineering experience gained by the basic design principles and design ideas, from the Angle of the whole to determine the structure of overall arrangement and aseismatic detail measures. The conceptual approximate estimation method can be used to construct the structural system rapidly and efficiently in the scheme stage of architectural design. The obtained scheme is usually clear in concept and accurate in quality, avoiding some unnecessary complicated calculations in the later design stage, and has good economic and reliable performance. At the same time, it is also the main basis to judge the reliability of computer internal force analysis output data.

Structural design is the reverse process of conceptual design. Its design is a process from quantitative transition to qualitative transition according to the general requirements, mechanics and mathematical principles of conceptual design.

From the comparison table, we can see the importance of conceptual design. However, many of our designers are too theoretical now. Even the general staff of some units did not participate in the early conceptual design stage of the design, but only reviewed the design drawings in the calculation book. Some of our new comrades sometimes compete with the auditors with books and calculations. Especially now in our industry the myth of the application of computers, everything is designed according to the results of calculation, this is an abnormal phenomenon.

Of course, the importance of conceptual design should not be emphasized, and the calculation of the design process should be ignored. Without the security of a single component, there would be no security of the whole structure.

Emphasized the importance of concept design, the main also because many existing in the current structural design theory and calculation theory of defects or computational, such as design of concrete structures, the calculation method of internal force calculation is based on the theory of elasticity, and cross section design is based on the theory of plastic limit state design method, the contradiction between the calculated results and the structure of the actual stress state of poor, in order to make up for the defect of this kind of calculation theory, or realize the actual existence of a large number of can't calculate the design of the structural components, excellent concept design and structural measures are needed to meet the purpose of structural design. At the same time, the high precision of computer results often leads to the misunderstanding of structural performance by structural designers. Only by strengthening the cultivation of structural concepts can structural engineers understand the working performance of structures objectively and truly.

Conceptual design is important because the initial design process cannot be realized with the help of computers in the design stage. Therefore, it is necessary for structural engineers to make comprehensive use of the structural concepts they have mastered and choose the most effective and lowest cost structural schemes. For this reason, engineers should continuously enrich their own structural concepts, deeply understand the performance of various structures, and use them consciously and flexibly.

Using the concept design thought, also makes the structure design thought to be widened. The research and structural design of traditional structural calculation theory seem to focus only on how to improve the structure resistance R, so that the higher the grade of concrete is used, the greater the amount of reinforcement and the higher the cost. Structural engineers often only notice that the maximum reinforcement ratio is not exceeded, resulting in fat girders, fat columns and deep foundations everywhere. Taking the seismic design as an example, the stiffness of the structure is generally calculated according to the initial size and concrete grade, then the seismic force is calculated by the structural stiffness, and then the reinforcement is calculated. But as you know, the higher the structural stiffness, the greater the seismic effect, the more reinforcement, the greater the stiffness, the stronger the seismic force. In this way, the reinforcement bars to resist the earthquake increase the stiffness of the structure, but enhance the seismic effect. In fact, why not consider reducing the action effect S? At present, in seismic design, the study of seismic isolation and energy dissipation is a good example. The general method of isolation and energy dissipation is to set a flexible isolation layer between the foundation and the main body. Add energy dissipation support; Some install a "backswing" on the top of the building. When an earthquake occurs, its displacement direction is opposite to that of the top of the building. Reasonable design can reduce the seismic effect of up to 60%, and improve the security of indoor goods. This research is being carried out extensively at home and abroad. In Japan, the research results have been widely used in practical projects and achieved good economic and practical results. However, due to the limitation of economy, technology and people's cognition, China has not been widely used in engineering.

The idea of conceptual design has been accepted by more and more structural engineers and will play more and more important role in structural design. However, in current college teaching, only individual components and isolated system of mechanical concepts are often emphasized. Especially in the teaching of specialized courses, the majority of single calculation exercises, less comprehensive exercises, and the emphasis in the examination questions, so that a considerable number of students develop the habit of only using the formulas to solve problems. In recent years, education has been emphasized in computer applications. For example, structural design software for graduation design has been used for calculation and drawing. However, due to the shielding of the computer design process and the weakening of the training degree of the manual calculation process, the students have a certain dependence. As a result, their comprehensive application ability declines and the overall structural system concept is vague. These are detrimental to the development of creative, future engineers.

With the development of social economy and the improvement of people's living standard, higher requirements have been put forward for architectural structure design. It is imperative to develop advanced computing theory, strengthen the application of computers, accelerate the research and application of new high-strength, light and environment-friendly building materials, and make the design of building structures safer, more applicable, more reliable and more economical. Among them, it is quite necessary to break the stereotypes in architectural structure design and give full play to the innovation ability of structural engineers. Because they are the agents and agents of the structural design revolution. This requires the joint efforts of the engineering and education sectors. It is an effective way to popularize the concept design idea.

想要了解更多英国留学资讯或者需要paper代写,请关注51Due英国论文代写平台,51Due是一家专业的论文代写机构,专业辅导海外留学生的英文论文写作,主要业务有论文代写assignment代写、paper代写。在这里,51Due致力于为留学生朋友提供高效优质的留学教育辅导服务,为广大留学生提升写作水平,帮助他们达成学业目标。如果您有paper代写需求,可以咨询我们的客服QQ800020041

51Due网站原创范文除特殊说明外一切图文著作权归51Due所有;未经51Due官方授权谢绝任何用途转载或刊发于媒体。如发生侵犯著作权现象,51Due保留一切法律追诉权。

我们的优势

  • 05年成立,已帮助上万人
  • 24小时专业客服
  • 团队成员都毕业于全球著名高校
  • 保证原创,支持检测

英国站