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101.
昆明世博INTEGER展览馆的4幢生态概念示范住宅探讨了革新意义上的和传统意义上的建造手段和生态设计策略,这些住宅尺度各异,结构方式多样,从不同的层面对生态建筑作了深入的思考。 相似文献
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103.
“SMW 工法”在上海地铁车站中的应用 总被引:1,自引:0,他引:1
地铁车站全部采用SMW工法建造围护结构在国内是很少见的,本文结合上海地铁M8线嫩江路车站的工程实践,对这种围护结构在设计和施工方面作初步总结和分析,以推广该工法在类似深基坑中的应用. 相似文献
104.
Konuralp Girgin Gunay Ozmen Engin Orakdogen 《Journal of Constructional Steel Research》2006,62(6):605-613
In several design codes and specifications, simplified formulae and diagrams are given for determining the buckling lengths of frame columns. It is shown that these formulae may yield rather erroneous results, especially for irregular frames. This is due to the fact that the code formulae utilise only local stiffness distributions. In this paper, a simplified procedure for determining approximate values for the buckling loads of both regular and irregular frames is developed. The procedure utilises lateral load analysis of frames and yields errors on the order of 5%, which may be considered suitable for design purposes. The proposed procedure is applied to several numerical examples and it is shown that all the errors are in the acceptable range and on the safe side. 相似文献
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This paper is concerned with the elastic flexural buckling of doubly symmetric columns with oblique restraints under concentric loading. Oblique restraints cause coupling between the principal axis deflections and rotations, and the flexural buckling mode involves simultaneous bending about both principal axes.The paper discusses the nature of oblique restraints, and presents exact and approximate solutions for the buckling loads of columns with rigid or elastic restraints against rotations at the ends. The exact solutions are obtained by solving the governing differential equations and boundary conditions, while the approximate solutions are based on energy solutions with assumed buckling displacements. The approximate solutions are sufficiently simple that they can be used in design, and are shown to be within 1% of the exact solutions. 相似文献
109.
The design of flocculators for water treatment continues to be based on the generalized and simplistic concept of mean velocity gradient within the reaction zone. This approach makes little sense for hydraulic flocculators in which the turbulence conditions are heterogenous. A theoretical, experimental and computational fluid dynamics study is presented, in which a point-to-point approach is derived, allowing variations in turbulent kinetic energy to be taken into account in determining flocculation efficiency. Results for the point-to-point calculation are compared with experimental measurements of flocculation efficiency in a full-scale model of a channel hydraulic flocculator, and an extremely good fit is obtained, demonstrating the point-to-point approach to be an accurate method of determining flocculation efficiency in channel hydraulic flocculators. A design example is presented showing how the point-to-point approach can be used in practice. It is concluded that the point-to-point approach is a much better method of design than that based on the mean velocity gradient. 相似文献
110.
渡上是北京市一个高档别墅小区.在创作时运用传统院落的理念,赋予现代别墅以传统内涵.通过介绍渡上别墅区建筑与风景的设计构思探讨新的别墅区规划设计理念. 相似文献