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该文详细分析了江苏银行宿迁分行结构隔震设计的全过程。首先进行了结构隔震必要性的分析,其次采用ETABS程序对隔震结构进行多遇地震作用下时程分析,对结构整体抗震性能进行评价。最后作出罕遇地震作用下的性能评估。分析结果表明:隔震结构具有良好的抗震性能,罕遇地震作用下抗震性能表现良好。 相似文献
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内蒙古伊旗全民健身体育中心主体结构采用下部收进、上部多层大悬挑结构,体系的竖向刚度明显不规则,使得结构体系在静力及罕遇地震作用下弹塑性性能成为结构体系安全控制的关键因素。首先对主体结构进行静力弹塑性分析,选取性能目标对不同方案进行对比,优化选择了带外斜交网格结构的多层大悬挑结构体系。随后分别采用振型分解反应谱法、弹性动力时程分析法和弹塑性动力时程分析方法对该结构体系进行了抗震性能分析,重点对结构的不规则性、结构安全性、大震下弹塑性性能及抗倒塌性能进行分析。分析表明,按选定性能目标优化得到的结构体系经济合理,实现了多层大悬挑结构在静力及地震作用下性能安全的设计目标。 相似文献
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人防工程在建设时需要做好对结构抗震的研究,尤其是现在人防地下结构规模不断扩大,结构抗震性能已经成为工程设计的重点研究对象,避免地震灾害对人防结构造成的影响。想要提高人防地下结构的抗震性能,就需要了解结构所具有的特点,对其抗震性能进行综合分析,通过实验分析来提高结构抗震设计的效果。本文对人防地下结构抗震特点进行了分析,并提出了结构抗震性能措施改进方法。 相似文献
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介绍了成都美年广场某超高层办公楼的结构设计和抗震性能分析。塔楼地下3层,地上46层,采用框架一核心筒结构。重点介绍了塔楼的结构布置、抗震计算分析和基于性能的抗震设计目标及实现。整体结构通过弹性分析进行设计,并通过动力弹塑性时程分析进行复核设计。分析结果表明,结构的抗震性能满足规范及性能目标的要求。 相似文献
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为保证结构的整体抗震性能,对某中学图书馆进行了结构抗震性能验算,并对结构的受力性能进行了有限元分析,提出了几点加强措施及注意事项,供同类工程设计参考. 相似文献
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Takashi Nakai and Toshinari Tanaka of the Forestry and Forest Products Research Institute in Japan present the results of tests, using the easy handling and reasonable cost technique of fundamental vibration frequency measurement, on larger than usual cross-sections. Modulus of elasticity measurements showed this method to have high possibilities for stress grading, overcoming the size limitations of existing commercial equipment at the saw mill or lumber yard. This paper was first presented at CIB Working Commission W18a in Vancouver in September 1988. 相似文献
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Innovative laboratory testing 总被引:3,自引:0,他引:3
J.S.O. Lau N.A. Chandler 《International Journal of Rock Mechanics and Mining Sciences》2004,41(8):1427-1445
Three laboratory test techniques were developed to study and quantify damage development in loaded rock specimens and to provide data for use in the calibration and solution of numerical models. Damage-controlled tests involved incremental loading–unloading cycles with the stress at volumetric strain reversal (crack damage stress σcd) and elastic properties calculated for each successive cycle. Damage was quantified by measuring the irreversible volumetric strain upon unloading and the degradation of rock strength and elastic properties. In long-term loading tests, a creep stress greater than σcd was applied to the specimen until failure. The time to failure was dependent upon the ratio of the creep stress to σcd, and to confining pressure. It was shown that σcd is a reasonable estimate of the long-term rock strength. Damage was quantified by measuring the degradation of elastic properties through periodic unloading–reloading cycles. The test data were used for the calibration of Itasca's PFC stress-corrosion model. Five types of thermoporoelasticity tests were designed to determine seven of the nine thermoporoelastic parameters required for the modelling of the thermoporoelastic response of rock. Tests were performed by applying increments of confining pressure, temperature or pore pressure on the rock specimen, and measuring the changes in confining pressure, specimen volume and pore pressure. The measured values of five parameters were found to agree reasonably well with the estimated values. 相似文献
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从沥青路面的原材料质量检测、路面压实质量检测和路面使用性能检测等方面,系统阐述了公路工程沥青路面施工现场试验检测技术,以期减少沥青路面病害,提高沥青路面施工质量。 相似文献
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嵌岩灌注桩应用的成功与否主要取决于嵌岩情况及桩身质量.在施工过程中加强质量管理的同时,需要有效的试验方法来检验工程桩成桩质量.本文结合某工厂的嵌岩灌注桩的检测实践,通过静载、钻芯法以及低应变法的对比,论述了高应变法在嵌岩灌注桩检测上的独特优势,其充分体现了经济、高效、便捷的特点. 相似文献
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Criteria have been proposed using the new Flooring Radiant Panel Test that provide safety equivalent to the level provided by the NFPA'sLife Safety Code
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Note: The test methods described herein do not pertain to carpet used other than for floor covering. 相似文献