liquefaction of sand 中文意思是什麼

liquefaction of sand 解釋
砂土液化
  • liquefaction : n. 液化（作用）。
  • of : OF ＝Old French 古法語。
  • sand : n 1 沙。2 〈 pl 〉 沙灘，沙洲，沙地，沙漠。3 〈 pl 〉 沙粒；（計時用的沙漏中的）細沙。4 光陰，時...
  1. Effect of liquefaction of lenticular saturated sand zone on seismic response of buildings

    飽和砂土透鏡體液化對建築物地震反應的影響
  2. Probability analysis of sand liquefaction

    砂土振動液化危險性分析方法比較研究
  3. The displacement of saturated sand induced by liquefaction

    飽和砂土液化引起的變形研究
  4. The evaluation of sand liquefaction is the most important content of engineering reconnaissance and the aseismatic design. so evaluating the sand liquefaction objectively and exactly is the precondition of taking preventive measures on areas where liquefaction easily occurs. it also relates closely to the safety and economic benefits of the projects

    地震砂土液化評判是工程勘察和抗震設計的一項首要內容，故客觀、準確地評價砂土液化，是對有可能發生液化的區域或地段進行有針對性的預防處理的前提，是關繫到工程建築的安全使用和工程建設的經濟效益的重要問題。
  5. Abstract : in this paper, the efficient stress method is used as main means, while the railway engineering anti - earthquake design specification and the dynamic triaxial test are used as additional means. the authors analyze the ground layer liquefaction of shield tunnelling built on powder soil or fine sand, whose top plate is buried under two kinds of depth, and conclude that the liquefaction area is different with different buried depth. finally, the rational buried depth is proposed

    文摘:以有效應力原理的有限元計算分析為主、鐵路工程抗震設計規范及室內動三軸實驗為輔，對修建在粉土或粉細砂層中的盾構隧道進行了兩種不同埋深情況下的液化分析，得出了埋深不同液化區出現區域不同的結論，並提出隧道抗液化的合理埋深。
  6. Analysis on the liquefaction of saturated sand foundation caused by vibration

    振動載荷下飽和砂土地基液化區域擴展分析
  7. The innovation of multiple mechanism boundary surface plasticity model is that the effect of rotation of principal stress axial directions and large shear displacement of sand in the earthquake induced liquefaction are taken into account at the same time in the model

    獨到之處在於所建立的多機構邊界麵塑性模型能夠同時考慮土體在復雜荷載作用下主應力軸旋轉的影響和砂土地震液化時剪切大位移特性。
  8. Study on possibility of sand liquefaction of immersed tube foundation in earthquake

    地震作用下沉管地基砂土液化可能性研究
  9. Numerical simulation of liquefaction of saturated sand under vertical vibration loading

    垂向動載下飽和砂土液化發展的數值模擬
  10. The dynamic triaxial test discrimination and evaluation for liquefaction of saturated sand

    飽和砂土液化的動三軸試驗判斷與評價
  11. Based on comparison of several technical schemes, the method of sand bedding pre - elevating and step water - filling pre - compressing is adopted. so the dissertation is consist of two parts : ( 1 ) the applicability study for the method of sand bedding pre - elevating and step water - filling pre - compressing, including numerical analyses for the thickness of sand bedding, the consolidation, settlement and stability of foundation, drainage, possibility of foundation liquefaction under seismic loading, et al. ( 2 ) monitoring at construction stage and checking the effect of foundation treatment, including the measurements of the settlement velocity and non - uniform settlement of ring beam under the tank, pore pressures and horizontal displacements in foundation, the pressure distribution at the bottom of oil tank and the strength increase of soils

    通過多種技術方案比較，最終選擇了技術先進的砂墊層預抬高分級充水預壓法，論文工作主要由以下兩部分組成： （ 1 ）砂墊層預抬高分級充水預壓法的適用性研究，其中包括砂墊層厚度、地基沉降與固結度、地基穩定性、降水、地震作用下砂土液化的可能性等方面的計算分析； （ 2 ）施工監測與地基處理效果檢驗，其中包括油罐環梁基礎沉降速率與不均勻沉降程度、各分級充水加載階段地基超靜孔壓與深層水平位移、油罐底板壓力分佈及地基土強度增長等方面的實測與數據分析。
  12. Liquefaction judgment of sand layers in south to north water transfer project middle routt

    南水北調中線工程砂層液化問題判別
  13. This article discussed the application of shear stress pairing method to evaluation dam base vibration liquefaction of earth - fill dam according to the problem that the sand and gravel layer of main dam base could be liquefied in the condition of seismic intensity grade vll in the design of nierji hydro project

    本文結合尼爾基水利樞紐工程設計中主壩壩基砂礫石層（ < 5mm含量> 30 =在地震裂度級工況下可能發生液化的問題，探討了用剪應力對比法在評價土壩壩基震動液化中的應用。
  14. Based on four project cases of vibro casing cast - in - place pile in silty sand foundation, the liquefaction of sand and its consequent pile breaking are analyzed, and suggestions on how to adopt values of the design parameters of a single pile are presented

    摘要以4個在粉砂地基中均採用振動沉管灌注樁的工程為例，分析了施工中砂土的液化及由此引起的斷樁，並對單樁設計參數的取值提出了建議。
  15. This model describes the post - liquefaction behavior of sand by two parts, corresponding to low - stiffness part and stiffness - recover part

    該模型可考慮初始有效固結壓力、相對密實度、液化度等對液化后變形特性的影響。
  16. No matter what the relative density, confining pressure, liquefaction severities are, the post - liquefaction deformation will show the same characteristic. the factors mentioned above have their own affecting ways. a lot of tests have been done to investigate the reconsolidation characteristics of sand after dynamic loading

    砂土液化后模量隨應變增加而增大的特性與常規三軸試驗中模量隨應變增大而減小的特性不同，相對密實度、液化度、初始有效固結壓力等都以特定的方式對影響著液化后的變形特性。
  17. With the data recorded by computer, the author studies the experiment progress in detail, which includes the development of pore press, strain, strength of the sand, etc. connecting the development of these phenomena with the development of stress path, the author finds new mechanism which can explain the phenomena in the experiment. what is more, according to the dynamic test of the sand, there appears a steady state at the last phase of the development of strain and stress path, in which the strength of the sand is studied because it is an important parameter in evaluating the stability of sand against liquefaction. secondly, the dynamic constitutive relation was studied through the dynamic tri - axial test

    本文首先採用目前國內較先進的微機控制動三軸儀，利用其可以適時採集和儲存數據的優勢，對砂土的實驗過程進行了細致的分析，研究該過程中孔隙水壓力發展、軸向應變發展以及它們與應力路徑之間的關系，對飽和砂土的剪脹、剪縮和卸載體縮等多個方面進行了研究，探索了砂土的動力特性，分析了影響砂土抗剪強度的各種因素，這些因素既包括土本身的特性（土的密度、結構、級配、透水性以及初始狀態等） ，又包括動荷載的特徵（振動力幅值大小和振動頻率等） 。
  18. It is pointed out that the compression of water in saturated sand caused by the densification of sand during dynamic loading and the dilation trend of liquefied sand are related to this. a new mechanism of large post - liquefaction deformation of saturated sand is established. according to the mechanism of large post - liquefaction deformation and the reconsolidation volumetric strain formula, a post - liquefaction constitutive model had been put forward

    摘要基於大變形機理以及文中提出的再固結體變公式提出了一個飽水砂土液化后本構模型，模型不尋求液化后整個加載過程中的應力應變反應，將液化后過程分成低強度段和強度恢復段兩段來分別進行表達，因為低強度段應變產生於極小的剪應力作用下因此認為該段應變是必然會發生的，強度恢復段應變的大小取決于土體所受剪應力的大小。
  19. A modified two - dimensional dynamic effective stress method is established and also the corresponding program presented in the paper. and the method is used for analyzing the effects of liquefaction of sand soil zone on surface ground motion and the response spectrum of acceleration 、 velocity and displacement

    本文在現有研究的基礎上，建立了一種土體二維有效應力動力分析方法並編制了相應程序，並以此計算分析了飽和液化砂層對地表加速度反應譜、速度反應譜、位移反應譜的影響。
  20. In the comprehensive fuzzy evaluation model of soil liquefaction, the following factors, such as earthquake intensity, spt counts, groundwater level and mean diameter of sand soil particle which affect the liquefaction of sand soil were considered, and the sketch map of trapezoid subordinate function was adopted and the subordinate function expression of each factor was given

    在提出的砂土液化模糊綜合評判模型中，通過綜合地震烈度、標貫擊數、地下水位和平均粒徑等影響砂土地震液化的因素，採用梯形隸屬函數並分別給出各因素隸屬函數的表達式。
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