span shackle
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The mechanical behavior of Shape Memory Alloys material is tested, and the constitutive model of the SMA is established. A kind of SMA combined rubber isolator is developed, and the isolation effect of the SMA combined rubber isolator for long-span bridge and tall building structures is numerically simulated, from which the adaptive isolation performance and the self-restoring capacity of the SMA combined rubber isolator are verified. A kind of SMA damper is developed, the mechanical behavior of the SMA damper is tested, and the model of restoring force of the SMA damper is established. The theory and method of adaptive control based on the SMA damper for the long-span bridge are built, and the effectiveness and reliability of the adaptive control for the long-span bridge using the SMA damper are verified through numerical simulation and model test. The MRF-04K type magnetorheological damper is developed, the mechanical behavior of the MR damper is tested, and the model of restoring force of the MR damper is established. The theory and method of adaptive control based on the MR damper for the long-span bridge and tall building structures are built, and the effectiveness and reliability of the adaptive control for the long-span bridge and tall building structures using the MR damper are verified through numerical simulation and model test. In addition, the theory and method of sub-structural damage identification for long-span bridge are derived, the influence of soil-structure dynamic interaction on the seismic isolation and control effects with different isolation and control measures and the damage responses and the sliding base-isolation of large structures under the excitation of underground explosion are investigated.
试验研究了形状记忆合金材料的力学性能,建立了SMA材料的本构模型;研制了一种SMA复合橡胶隔震支座,数值仿真分析了应用SMA复合橡胶支座的大跨桥梁和高层建筑结构的隔震效果,从而验证了SMA复合橡胶支座的自适应隔震性能及其震后自恢复能力;研制了一种SMA阻尼器,试验研究了SMA阻尼器的力学性能,建立了SMA阻尼器的恢复力模型,建立了基于SMA阻尼器的大跨桥梁结构自适应控制理论与方法,通过数值仿真与模型试验验证了大跨桥梁结构SMA阻尼器自适应控制的有效性与可靠性;研制了一种MRF-04K型磁流变阻尼器,试验研究了MR阻尼器的力学性能,建立了MR阻尼器的恢复力模型,建立了基于MR阻尼器的大跨桥梁和高层建筑结构的自适应控制理论与方法,通过数值仿真和模型试验验证了大跨桥梁和高层建筑结构MR阻尼器自适应控制的有效性与可靠性;还建立了大跨桥梁结构的子结构损伤识别的理论与方法,研究了土-结构动力相互作用对不同隔震和控制措施的减震控制效果的影响以及地下爆炸波作用下各类大型结构的灾害响应与滑移隔震。
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The researches show that self-stability span is synthetical reflection of surrounding rock stability, so sub-classification standard can be constituted based on it. Surrounding rock self-stability span can divide into long-term stability span, basic stability span, temporary stability span and instability span.
研究结果显示:围岩自稳跨度是围岩自稳性的综合反映,围岩自稳跨度可分为长期稳定跨度、基本稳定跨度、暂时稳定跨度和不稳定跨度。
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Based on the present findings, it appears that all the Taiwan WAIS-Ⅲ working memory index, the single Arithmetic and the Digit Span subtests, and the span scores of the Digit Span subtest could adequately discriminate individuals without working memory impairment, but had poor sensitivity on detecting the patients who evidenced working memory impairment. Accordingly, it is suggested that clinicians should gauge the working memory index by a composite of the Arithmetic, the Digit Span, and the Letter-Number Sequencing subtests if possible. Otherwise, a caveat should be taken with care to interpret the working memory index, as estimated by a composite of the Arithmetic and the Digit Span subtests, because the chance of the increasing false negative rate becomes ineludible.
综合上述,显见WAIS-Ⅲ中文版中之工作记忆指数、单一算术及单一记忆广度分测验、或记忆广度分测验之各项广度值在区分患者有无工作记忆功能异常上皆拥有良好之区辨力,但对侦测工作记忆功能异常患者的敏感度普遍不佳,建议临床工作者应尽量取得算术、记忆广度、与数-字序列等三项分测验组合所估算之工作记忆指数;若在有限条件下,临床工作者仅能以算术与记忆广度两项分测验之组合所估算之工作记忆指数来评估受试者工作记忆,应留意假阴性比例上升的问题。
- 更多网络解释 与span shackle相关的网络解释 [注:此内容来源于网络,仅供参考]
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span shackle:三角环
span rigging 千斤索具 | span shackle 三角环 | span winch 门座起重机