摘要 :
In recent years,with the rapid development of urban development and the continuous improvement of people''''s living standards,China''''s construction industry has also achieved remarkable development.In order to meet the needs of...
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In recent years,with the rapid development of urban development and the continuous improvement of people''''s living standards,China''''s construction industry has also achieved remarkable development.In order to meet the needs of urbanization,many large buildings and high-rise buildings have been built up.These buildings are usually large,so they put forward higher and higher requirements for the technical level of engineering construction.Whether it is for the stability or safety of buildings,it must be continuously improved.Basic design is a key part of the structural design of a building.For the safety of buildings,natural disasters or accidental injuries can have extremely bad effects on urban development and people''''s life.This paper briefly discusses the basic design analysis in architectural structure design,and seeks the key technology in this process to provide a guarantee for the safety of the building.
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In the city of Gdansk in Poland,in the very center of the Baltic capital,on 17th of June 2017,a new draw footbridge was ceremoniously opened to the public.The Olowianka footbridge represents the long-time much needed link between ...
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In the city of Gdansk in Poland,in the very center of the Baltic capital,on 17th of June 2017,a new draw footbridge was ceremoniously opened to the public.The Olowianka footbridge represents the long-time much needed link between the highly tourist-visited historical old town and Ołowianka Island,where further cultural,tourist and recreation facilities are located.The bridge spans a very busy navigable channel of the Motława River,leading inward towards other city channels,a harbor for many tourist ships and the Gdansk Marina.Being the main navigable entrance to the city center,the Motława is constantly under nautical traffic,so the Ołowianka footbridge operates 24/7,according to a 30-min schedule.The Ołowianka footbridge is an extraordinary acquisition for the city of Gdansk,which immediately became a new landmark and much more in the already very picturesque historic city center.Not just its design,but also its carefully chosen location and its realization at the right moment,has made this bridge indispensable to the inhabitants,visitors and the administration of the city of Gdansk,decisively contributing to further development in the Ołowianka Island area and its surroundings.
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摘要 :
Integral abutment bridges(IABs)minimize deterioration and degradation of the abutment seats and bearings due to water,dirt,and deicing chemicals by eliminating bearings and expansion joints.Although the continuity between superstr...
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Integral abutment bridges(IABs)minimize deterioration and degradation of the abutment seats and bearings due to water,dirt,and deicing chemicals by eliminating bearings and expansion joints.Although the continuity between superstructure and abutments in an IAB is beneficial for reducing maintenance costs,it leads to more complex behavior under strength and service loading(temperature and traffic)and extreme loading(earthquake).The coupling of superstructure and substructure behavior necessitates system-level analysis of IABs.Prior seismic IAB studies have typically investigated the behavior of individual IAB components,however a gap of knowledge has developed due to the lack of studies and investigation about the behavior of all IAB components and their interactions with each other in a single analysis model.This study uses nonlinear static and dynamic analyses to investigate and assess the seismic behavior of IABs typical to the state of Illinois.The analyses aim to bridge the gap of knowledge by evaluating IABs as a whole and utilizing the results to indicate potential vulnerabilities in the design and construction of IABs in Illinois during design-level and larger seismic events,which could not be identified by component-level IAB analyses alone.
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Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute ef...
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Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute effective models for the following analysis process of CAE and CAPP. The problems arisen in the process of conceptual design with the traditional experience-based development method are analyzed. Based on those analyses, open rule-setting method is presented and some associated technical problems are discussed. The functional framework of open rule-setting system was built as software engineering methods. The speciality of the engine product as a kind of complex product and the requirement of the engine product based on its structural particularity to rule-setting system are considered carefully. A demonstration is supplied to illustrate how the open rule-setting method enhances the efficiency and quality of the engine conceptual design.
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Accelerator driven system (ADS) is the effective tool for transmuting the long-lived transuranic radionuclidesinto shorter-lived radionuclides. A project called C-ADS is being studied at the Chinese Academy of Sciences.Injector II...
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Accelerator driven system (ADS) is the effective tool for transmuting the long-lived transuranic radionuclidesinto shorter-lived radionuclides. A project called C-ADS is being studied at the Chinese Academy of Sciences.Injector II prototype of C-ADS which is in charge of by the Institute of Modern Physics has already gained agood progress so far. Two superconducting solenoids with the effective length of 150 mm have been designed andfabricated by Magnet and Mechanical Group of IMP and installed into the testing cryomodule[1].
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摘要 :
In the conceptual stage the function design process is realized by the computer aided application. After surveying on the function specification methods and the function modeling, a computer aided function design environment is an...
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In the conceptual stage the function design process is realized by the computer aided application. After surveying on the function specification methods and the function modeling, a computer aided function design environment is analyzed. Subsequently based on a module library and principle catalogue, a solution finding process as a part of conceptual design is proposed for a creative design. In addition, a search algorithm to find the solution of adaptable function structure is also discussed. The concepts proposed in this paper can support the subsequent design stages, especially simulation for checking the function structure defects.
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