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粘性泥沙运动规律在淤泥质海岸工程中的应用 总被引：3，自引：0，他引：3
根据近年来我国淤泥质海岸粘性泥沙运动规律在海岸工程中的应用:包括对于适航水深的应用,在疏浚技术上的应用,关于航道泥沙回淤模式和计算方法的应用,关于在泥沙物理模型和数学模型上的应用以及在泥沙回淤整治技术上的应用.阐述和论证了学术成果与工程应用的有效结合,同时也突显了学术和基础研究在工程建设中的作用和价值. 相似文献
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本文主要介绍几种核测量仪器在海洋研究中的直接应用。其中包括:活化分析法的应用;谱仪分析法的应用,其它核测量仪器的应用;核辐射的直接应用。 相似文献
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为满足海岸地形测量对光学高分辨率遥感技术的应用需求,总结分析了我国光学高分辨率遥感技术的海岸地形测量应用现状,比较了国内外相关领域应用研究方向差异,指出该领域在硬件平台、处理软件和专业应用等方面的巨大进展,总结了光学高分遥感数据管理、处理、应用和服务等方面的发展趋势,有助于光学高分辨率遥感技术在海岸带测绘中的应用。 相似文献
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通过介绍国外在军用和民用领域海洋监测传感器网络的应用情况,结合我国海洋监测技术发展的现状,分析了传感器网络在海洋监测中应用的概念和内容,并对应用技术研究问题进行了探讨。 相似文献
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浅谈挤密碎石桩的施工方法 总被引：1，自引：0，他引：1
挤密碎石桩施工法是一种振动成桩法,即先用桩管振动成孔,然后填入足够数量的碎石,最后振动密实成桩体。通过振动、挤密的成桩过程,将原地基土振动夯实,桩体与桩间土形成复合地基,达到既处理可液化地基又增强地基的效果。介绍了挤密碎石柱的施工方法和质量检测方法。 相似文献
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钢管斜桩是潮间带风电的常用基础形式,常采用吊打沉桩的方式。文章针对潮间带吊打沉桩方式的难点开发吊打导向装置,并总结沉桩参数的确定方法。该导向装置包括定位桩、定位架和调向限位架,总体平面布局为六边形,可一次定位并完成整个风电基础的基桩施工,既能可靠保证桩的施工精度,又能极大地提高施工效率和降低安全风险;在应用该施工关键装备时,采用GRLWEAP打桩分析功能确定桩顶动荷载,采用有限元软件建立导向装置有限元模型,对导向装置和沉桩参数进行分析,从而实现斜桩顺利沉桩的目的。该装置和方法已成功应用于越南朔庄一期海上风电场项目,为潮间带风电钢管斜桩吊打施工提供沉桩装备和方法经验。 相似文献
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在钢管桩沉桩施工中，控制好钢管桩的定位、标高以及贯入度，是钢管桩施工中的质量控制要点，钢管桩沉桩完成后进行接桩、截桩及钢管桩的防腐修补施工。根据钢管桩沉桩的质量控制要点，在钢管桩施工中，要做好施工测量控制，确保沉桩位置的准确以及打桩的垂直度，保证沉桩的贯入度能够满足地基承载力的要求；同时要做好船机的调配工作，保证钢管桩沉桩施工的顺利进行。 相似文献
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复合载体夯扩桩技术在青岛地区的应用 总被引：1，自引：0，他引：1
详细介绍了复合载体夯扩桩的构造、承载机制、设计和施工程序，总结了它的优点和适用范围，并用青岛地区的应用实例说明其桩基计算方法和基桩检测试验结果。应用结果表明，此技术在青岛地区有广泛的应用前景。 相似文献
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Zhen-Ya Li 《Marine Georesources & Geotechnology》2017,35(2):256-265
The vertical dynamic impedance of the large-diameter pile is theoretically investigated considering the construction disturbance effect. First, the Rayleigh–Love rode model is introduced to simulate the large-diameter pile with the consideration of its transverse inertia effect. The shear complex stiffness transfer model is proposed to simulate the radial inhomogeneity of the pile surrounding soil caused by the construction disturbance effect. Then, the pile–soil system is divided into finite segments, and the governing equation of the pile–soil system subjected to vertical dynamic loading is established. Following this, the analytical solution of vertical dynamic impedance at the pile head is obtained by means of the shear complex stiffness transfer method and the impedance function transfer method. Based on the present solution, a parametric analysis is conducted to investigate the influence of the transverse inertia effect on the vertical dynamic impedance at the pile head and its relationship with the pile–soil parameters. Finally, comparisons with published solutions are carried out to verify the reliability of the present solution. 相似文献
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Wen-Bing Wu Guo-Sheng Jiang Shu-Hui Lü Bang-Hua Xie 《Marine Georesources & Geotechnology》2016,34(4):321-330
The dynamic response of a tapered pile (considering its construction disturbance effect) is investigated when the tapered pile is subjected to a time-harmonic torsional loading. For most engineering conditions, the surrounding soil may be weakened or strengthened owing to the construction disturbance effect of the tapered pile, resulting in the soil becoming radially inhomogeneous. In order to consider this problem, the circumferential shear complex stiffness transfer model is proposed to simulate the radial inhomogeneity of soil. Then, the governing equations of a tapered pile-soil system subjected to torsional dynamic loading are established. By virtue of the circumferential shear complex stiffness transfer method and the impedance function transfer method, the analytical solution of torsional dynamic impedance at the head of the tapered pile is derived. Based on the presented solution, the influence of the construction disturbance effect of the surrounding soil on the torsional dynamic impedance at the pile head is investigated within the low-frequency range concerned in the design of a dynamic foundation. The results show that, even if the hardening range and softening range of the surrounding soil vary within a smaller scale, the hardening effect and softening effect also have a notable influence on the torsional dynamic impedance at the pile head. 相似文献