CFRP筋作体外预应力束的简支梁桥设计研究

本文介绍了c筋在预应力混凝土公路梁桥建设中的应用。该桥为整体现浇25m跨径简支梁,采用CFRP筋中的碳绞线(Carbon Fiber Composite Cable)作为体外预应力束。文中论述了设计中应关注的主要问题,运用理论方法和有限元方法对结构作了全面分析,并在造价上与普通预应力混凝土梁桥作了比较。     

从民居建筑布局看“堂文化”的神圣表述——“堂文化”所呈现的中国文化思维模式论之一

民居里的堂屋是民居建筑里的“神圣空间”,在我们阅读这种神圣空间的同时,我们不仅能够读出中国文化的核心思想观念,而且可以读出中国文化里的思维模式,以及中国文化的结构体系。而这些与中国民居建筑手法融合,使得民居的“堂”成为中国文化中典型的神圣“话语”符号。     

淮河防汛调度设施工程结构抗震设计

以“淮河防汛调度设施工程”这一具有复杂体型的高层建筑结构为实例,从理论分析和抗震设计上对其进行了详细的分析和讨论,重点介绍了结构抗震设计过程中的特殊处理措施,得出了关于该类结构抗震设计的几点结论。     

奢华的简约

香港,繁华而喧嚣,漫步在大街上,萦绕在耳际永远是无边的噪杂声,而汹涌而至的人群又仿佛随时都有淹没我们的可能,这让生活在大都市中的男女备感压抑和厌倦,时时有逃离城市的冲动,但习惯了繁华的我们却已经不能够再忍受生活在别处了,纯粹而简单的生活仿佛已和我们绝缘。自然美SPA     

Boston harbor outfall tunnel: An environmental imperative

In February 1989, the Massachusetts Water Resource Authority (MWRA) began the design and construction of a 15.3-km subsea tunnel and ocean riser system to discharge effluent in conjunction with the design and construction of a large secondary treatment plant. The court-mandated schedule required the tunnel and risers to be completed in July 1995. The paper discusses the project from the viewpoints of management, concept design and construction methods, including the ocean riser system. Key to th success of the project is the accuracy of the location of the risers. The design calls for a final tunnel alignment to be driven within 10 m of the riser shafts, beginning at a distance of 13.1 km from shore.     

德化陶瓷学院图书馆建筑设计随笔

德化陶瓷学院图书馆的建筑设计以突出以人为本及突出人、建筑、环境三者的和谐组合为主导思想,强调使用功能空间的优化组合及空间的深化,和建筑造型、景观环境相结合的整体设计。构筑建筑的自身魅力及良好的环境效应。     

两个"住"的实验

本文介绍了笔者参与的两个关于中国住宅竞赛的实验……希望引发设计者重新思考众多因素对居住的影响。"     

Radiocesium in muscle tissue of reindeer and pike from northern Sweden before and after the Chernobyl accident. A retrospective study on tissue samples from the Swedish Environmental Specimen Bank.

After the Chernobyl accident in April 1986, considerable deposition of radionuclides occurred regionally in eastern, central and northwestern Sweden. Locally, the fallout of radiocesium exceeded the remainder from atmospheric nuclear weapons tests by several magnitudes. Since the end of the 1960s samples of organs from various plant and animal species, annually collected at different localities, have been preserved in the Swedish Environmental Specimen Bank (ESB). In this work samples from the ESB have been used for retrospective studies of radioactive pollution. The activities of Cs-134 and Cs-137 in muscle tissues from reindeer, Rangifer tarandus, and pike, Esox lucius, preserved in the ESB, were measured. The samples were collected annually; the reindeer at three localities in northern Sweden and the pike at one of them. In material collected prior to the Chernobyl accident, the levels of Cs-137 were 57-180 Bq/kg in reindeer and 14-24 Bq/kg in pike, fresh weight basis. These levels relate to earlier nuclear bomb tests. A significant decrease was found in pike during the pre-Chernobyl period (1971-86). In post-Chernobyl samples the burden of Cs-137 varied from amounts equal to the former levels in the northernmost locality and up to 80 times higher for the maximum values in the southernmost locality. The highest value recorded was 18,425 Bq/kg in reindeer. The geographic variations in reindeer from Chernobyl fallout were in accordance with the pattern of deposition estimated by aircraft surveys performed in May 1986. The ratio between 'new' and 'old' radiocesium burdens in pike, caught in 1987, approached the corresponding ratio for reindeer grazing in the precipitation area of the lake; 33 and 19, respectively.     

Geomechanical model simulation for the varied rock formations of the Kadana dam foundation,Gujarat, India

Bulletin of Engineering Geology and the Environment - Precambrian layered rocks consisting of quartzites, phyllites and metagreywackes of the Aravallis having a large variation in thickness,...     

浅谈城市火灾自动报警监控管理系统

阐述了城市火灾自动报警监控管理系统的组成、工作原理及主要功能 ,介绍了数据采集和现场网络视频图像显示功能的设计。