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在役钢筋混凝土桥梁耐久性模糊综合评估方法 总被引:1,自引:0,他引:1
文章基于对某在役钢筋混凝土悬臂梁桥的检测,建立了桥梁耐久性综合评估模型,并根据各评估指标实测值得出各级评估影响指标的模糊关系矩阵,用以综合评判桥梁构件的耐久性等级,为桥梁结构耐久性等级的确定提供了方法依据。 相似文献
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文章针对桩基质量评估技术研究现状,建立了一种基于模糊推理的桩基检测评估体系,并结合广西公路路网结构改造工程(百色段危桥改造工程)实例,通过将桩基质量评估结果与实际桩基检测结果进行对比分析,验证了该桩基质量检测评估方法能够对桥梁桩基状态进行有效的辨识,为桥梁桩基检测质量评估提供了参考依据。 相似文献
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文章以三江至柳州高速公路为工程背景,借助评估排查法对已接好墩柱并施工完盖梁的桥梁桩基质量进行评估,并提出处理建议,为桥梁桩基检测质量评估提供参考依据。 相似文献
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根据BIM技术发展状况和桥梁监测方法的应用,文章提出了基于BIM技术的桥梁监测平台的设计与应用,将桥梁基础数据的收集、数据分析、数据传送、安全评估及预测集为一体,依据桥梁载荷、整体结构和局部数据等,进行桥梁安全状况的总体性预测评估,为桥梁后期养护运营提供方法借鉴。 相似文献
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为探究桥梁桩基检测中混凝土超声波检测技术的应用,实现对桩基内部结构的无损评估,分析混凝土超声波检测技术的应用原理,探究混凝土超声波检测技术的应用意义,并提出超声波检测技术的具体方法和应用,以实现对桩基结构的高精度评估,为后续维护决策提供可靠的依据。 相似文献
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为确保大跨度钢管混凝土拱桥的运营安全,文章依托广西某大跨度钢管混凝土拱桥工程,通过索力检测、静力加载试验和动力荷载试验进行了桥梁结构检测与安全评估研究,为大跨度钢管混凝土拱桥的后期运营养护提供参考依据。 相似文献
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This paper seeks to use life cycle assessment to investigate the comparative environmental impacts of two proposed bridge designs for the new Mjøsa Bridge over Lake Mjøsa in Norway. The Norwegian Public Roads Administration has designed one timber and one concrete alternative for the 1650 m 4-lane highway bridge. If the timber bridge design is chosen, it will be the longest timber bridge in the world once constructed.The main motivation for building the timber bridge is to utilize local industry and to reduce environmental impacts in road infrastructure. This study aims to determine the expected emissions from both construction designs by using life cycle assessment. Life cycle assessment studies on smaller timber bridges have been carried out in the past with favorable results towards timber designs, but no bridge of this scale has been built and therefore a more comprehensive study is required to confirm if a timber bridge of this size is a sustainable choice for transport infrastructure.The results of the study show that the timber bridge has significantly lower emissions than the concrete bridge across all impact categories included in the scope of this study. Additional environmental gains can be made from end-of-life treatment of materials. This study shows that large scale timber bridge designs should be considered for future road projects. 相似文献
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In this paper, a method for designing a statistically valid sample of bridges is proposed. The need for such a sampling procedure arises from the impracticality of a detailed analysis of the structural effects of new candidate truck configurations on the whole bridge inventory. In this study, a set of bridges from the national inventory was determined for the purpose of selecting a bridge sample. This set of bridges is referred to as the population. The selection of bridges for inclusion in the population was based on the status of the bridge, type of service, structural material, structural system type and functional class. The stratified sampling method was used in the determination of the required sample sizes. According to this method, the population was first divided into sub-populations, or strata. These sub-populations were non-overlapping. In turn, each strata was divided into sub-strata. The characteristics of each sub-stratum were estimated and combined to determine the characterics of the strata. Then the characteristics of the strata were combined to determine the characteristics of the bridge population. A comparison of the results based on the sample and bridge population was conducted in order to verify the validity of the proposed sampling procedure. 相似文献
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在建设公路桥梁时,最重要的是考虑关于安全和耐久两方面的指标。而频繁发生的桥梁安全事故,对于桥梁整体的工程效益有很大的影响,对于交通运输网络的破坏性也是相当明显的。本文将结合具体的工程案例,具体分析桥梁设计中存在的问题,对于提升桥梁设计的安全与耐久性进行探讨。最后提出相应的措施来提升桥梁工程施工质量。希望对以后的类似工程有一定的借鉴作用。 相似文献
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文章针对矮塔斜拉桥的特点,结合惠青黄河大桥实际的工程经验,对矮塔斜拉桥的施工监控技术进行了研究。并对施工监控矮塔斜拉桥的关键技术进行重点介绍,可为同类桥梁的施工监控提供参考。 相似文献