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渤海“自立号”是一座典型的沉垫基础自升式平台,平台寿命已经超过30年,为保证平台未来安全运行,需要对其进行剩余寿命的评估。评估内容包括考虑结构腐蚀的结构强度评估,以及对平台历史和延寿期的疲劳损伤累积评估。本文简要介绍了“自立号”平台延寿的评估过程和内容,供类似工程参考。 相似文献
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Norlida Abdul Hamid 《Transportation》2009,36(3):295-307
A parking utilization survey was undertaken with the main objective of analyzing and comparing the daily workday utilization
patterns of two main park and ride stations within the Kuala Lumpur conurbation. This study also aimed to gauge the level
of usage of the park and ride facilities. The findings showed that the overall utilization pattern of the facilities was very
high with a utilization rate of between 80 and 95%. The stations, however, recorded a contrasting accumulation pattern. The
study further revealed that most of the rail-based suburban park and ride users were long term parkers. The results of this
study are comparable to results of similar studies in Seoul, Calgary, Tyne and Wear and others. Since parking availability
is an important factor that has influence on the behavior of a park and ride user, more accurate information relating to the
supply and demand of the park and ride facility will assist in planning new transport infrastructure.
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Norlida Abdul HamidEmail: |
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堆积层边坡人工降雨致滑的原位监测试验研究 总被引:8,自引:0,他引:8
降雨可引起堆积层边坡失稳。为了研究降雨入渗诱发堆积层滑坡的失稳机理以及边坡性状随时间变化的特性,选取贵州晴隆一个典型堆积层边坡进行人工降雨模拟试验和原位综合监测。结果表明:堆积层边坡在降雨入渗影响下多发浅层松弛型破坏,滑动变形区为坡面以下0~4 m之内,变形量以坡面最大,从坡面到坡体深部逐渐减小;在实施人工降雨2 h,平均入渗率为86%之后,入渗率由于地表径流的增加而随时间逐渐减少,一段时间(6 h)之后,入渗率降到一个相对稳定值(50%);降雨入渗造成土体中孔隙水压力增加,致使边坡土体的抗剪强度由于有效应力的减少及土体吸水软化而降低,降雨入渗的这一双重效应是降雨诱发堆积层边坡失稳的主要原因之一。 相似文献
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