共查询到20条相似文献,搜索用时 750 毫秒
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介绍了某超限高层建筑结构工程概况,对议事中心结构超限进行了分析,提出了结栖设计与抗震构造措施,并进行了结构计算与分析,具有一定的参考价值。 相似文献
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介绍了钢筋混凝土结构非线性分析的意义及非线性主要包括的问题,探讨了钢筋混凝土结构有限元分析的特点与国内外研究现状,最后提出了钢筋混凝土结构有限元分析的发展趋势和研究方向。 相似文献
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从改变结构刚度和阻尼能改变结构动力特性的概念出发,提出了变结构控制方法,并采用复模态分析理论对变结构控制状态及其减震效果进行了优化分析. 相似文献
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为了满足多种建筑功能的要求,结合剪力墙结构和框架结构的优缺点,提出了框架-剪力墙结构,分析了框架与剪力墙协同工作的原理,对其结构受力性能进行了分析,详细探讨了框架-剪力墙结构的抗震性能,指出该体系改善了结构整体的受力性能,并提高了结构的抗震能力。 相似文献
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结构梁斜拉桥锚拉板结构研究 总被引:7,自引:0,他引:7
为确保结构的安全使用,对一具体结合梁斜拉桥锚固结构CM1、CM21作空间非线性有限元分析。由分析结果,对其锚固结构原设计方案提出了改进建议,有效提高了结构初始屈服荷载,缓解了应力集中。 相似文献
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结构模糊可靠度分析的实用方法 总被引:1,自引:0,他引:1
贡金鑫 《重庆建筑工程学院学报》1994,(1):23-27
结构模糊可靠度分析是同时考虑结构变量的随机性和模糊性评估结构可靠度的方法。目前已提出的方法需进行高维积分,当随机变量的数目较多时计算量较大,难以直接应用。根据不同的精度要求,本文提出结构模糊可靠度分析的一次二阶矩和四阶矩方法,为模糊可靠度方法的实际应用开辟了新的途径。 相似文献
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对科学计算可视化进行了简单介绍,阐述了结构分析中的可视化前处理和后处理,提出科学计算可视化在结构分析中的应用,可以使设计人员与研究人员更方便的观察和研究结构。 相似文献
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The main roof of the ”Haus der Kulturen der Welt“ in Berlin Which is very well‐known on account of its history and striking structural design – was to be inspected by the author to determine its condition and analysed with regard to the durability of the existing liquid synthetic sealant. The roof structure consists of a biaxial, curved area‐covering structural element with circumferential edge beams of pre‐stressed lightweight concrete. This is the result of the reconstruction between 1984 and 1987 following a partial collapse of the then Berlin Congress Hall in 1980. The very thin roof shell is also made of lightweight concrete and, like the edge beams, has a polyurethane‐based spray‐on seal that was specially developed for this purpose as protection against the ingress of moisture. The reason why this, at the time, novel type of seal was chosen was that it should take into account the fact that the roof design urgently needed some kind of protection against moisture that had to compensate the expected changes shape and crack movements of the roof with no damage. The following article reports on the nature, scope and main results of the analysis of the condition of the roof seal, edge beams and abutments. It will also describe the repair recommendations resulting from the investigations, which form the basis of the execution of work at the present point in time. Apart from presenting the technical principles and special features of the building that have to be taken into account during any repairs, the special features of the execution will also be addressed. 相似文献
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Harald Budelmann Alexander Holst Hans‐Joachim Wichmann 《Beton- und Stahlbetonbau》2009,104(6):330-339
Magnetoelastic Measurement of Prestressing Force in Civil Structures The knowledge of the tensile force of prestressing steel elements and its reliable and non‐destructive determination are of essential importance for the assessment of the structural health condition of prestressed concrete structures and tie‐back systems in terms of structural safety, serviceability and durability. For the evaluation of the prestressing force in steel tension members, the measurement technique presented in this contribution is using the magneto‐elastic effect (ME‐effect) of ferromagnetic materials. This effect describes the reverse‐proportional correlation between the mechanical stress and the magnetic properties of ferromagnetic materials. The cylindrical coiled sensors pushed over the tendon and the measuring device developed and practically optimized at the iBMB/MPA of the TU Braunschweig enable a fast and reliable measurement of the prestressing steel force after an initial calibration. In this contribution first the state of the art of prestress measurement techniques for steel tension members is presented. Afterwards, the ME‐measuring method with the basics and merits of magneto‐elastic prestressing force identification is shown. Further recent research results as well as several building applications will be discussed. 相似文献
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从母岩的选料、级配控制、石粉和泥土含量控制三个方面阐述了控制机制砂质量的重要性,并提出了可将隧道混凝土机制砂的石粉含量限值放宽到10%的建议,以促进耐久性混凝土的研究。 相似文献
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The new bridge over the river Lahn near Limburg as part of BAB 3, Germany – Competition and Design The effort of the responsible engineers and architects at the Lahntalbrücke Limburg always becomes clear when a new well‐designed bridge structure is needed for the representative Lahn valley. To handle the steadily increasing traffic prestressed concrete structures have gained acceptance for both replacement constructions. Both constructions also convince optically through their simplicity while leaving the creative presence of the cathedral in the valley unchanged. 相似文献
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本文从上海城市文化特点的角度出发,以“生活世界”哲学为基础,对现阶段居住小区设计模式进行了分析。认为“现实生活世界”是上海当代居住小区设计的起点和归宿。也只有这样,才能使新时代的空间形态与生活形态再次整合,创造出新时代的美好人居。 相似文献
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浅谈室内色彩设计的方法 总被引:1,自引:1,他引:0
提出了室内设计中色彩设计的原则,从色彩在室内设计中的作用、功能及使用者的心理等方面进行了探讨,以提高人们对色彩的认识,充分发挥色彩设计的作用,更好地满足消费者的需求. 相似文献
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针对央视新厦之设计弊端及库氏之流所称邪淫形象,提出改扩建设想及相应建议。从造形立意、结构体系、消防安全等分述改善措施,且将变更业主、转换功能及融资渠道等亦考虑其中。反对以重金建造全球史无前例之奥运纪念碑,申明现有奥运场馆即为最佳纪念实物。主张起诉库氏、矶氏,消除恶劣影响,结合改扩建,进而达致“化辱为荣,补损成益”。 相似文献
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Loading of the tunnel sealing system due to fresh concrete pressure This report deals with the loading of the geomembrane during the construction phase of the inner shell of a tunnel. In a systematic parameter analysis at the institute for underground construction at FH Münster the geomembrane and the geotextile were tested under different realistic conditions. Laboratory testing showed a dependence on the seal support surface of the shotcrete and on the characteristics of the geotextile. The deformations of the membranes due to fresh concrete pressure are significantly smaller than the permitted values in the technical regulations. The main results of the investigations are described below. 相似文献