pile-up effect 中文意思是什麼
pile-up effect
解釋
脈沖堆積效應-
By direct shear for and normal triaxial shear tests of non - saturated desert sand, the parper studied the effect of water content and dry density on the strength of the non - saturated desert sand, and set up the code of this sand. based on the plane strain test of non - saturated desert sand slope, the paper analysed the destruction way of the excavaion side during the construction by means of adding water, and brough forward a formule that calculates the allowable of excavation and pile hole
通過非飽和沙漠砂直剪試驗和常規三軸剪切試驗，研究了含水量和干密度對非飽和砂強度的影響，建立了這種砂的強度準則。通過非飽和沙漠砂邊坡室內平面應變試驗，分析了沙漠井場浸法施工中就基坑壁的破壞方式，推導出了基坑和樁孔容許開挖深度的計算公式。 -
Some stiffness matrices of special elements such as rubber bearings and components with field are derived from primary - secondary and inverse transform in structural matrix analysis. then, seismic response analytical models and non - isolated continuous rigid frame bridges are set up, while considering the interaction of soil - pile - structure and traveling wave effect simultaneously. finally, the seismic time history response of the two models is calculated by means of the finite element method, and the results show that the isolated bridge posses powerful earthquake resistance
首先論述了公路大跨徑橋梁的地震反應分析方法，其中包括樁-土-結構相互作用、行波效應等因素對結構物的影響；其次，利用結構矩陣分析中的主從變換和逆步變換，推演了幾個特殊單元的剛度矩陣，包括橡膠隔震層單元和帶剛域構件單元；最後，考慮樁-土-結構相互作用和行波效應的結合，分別建立隔震與非隔震連續剛構橋地震反應分析模型，通過有限元法對兩種結構進行時程分析，結果表明：隔震層上部結構的地震加速度反應、位移反應均明顯減小，這說明隔震的連續剛構橋具有很好的抗震能力。 -
Pile - up effect of temperature field generated by energy flux
能束加工的溫度場疊加效應 -
Based on the formula which is used to compute the lateral resistance of single pile deduced by wang qitong, a formula is setup whose precondition is that the pile and the lateral soil directly around the pile deform in - phase. on the basis of that the contact stress of the foundation is equal, a formula that can be used to conform the stress - ratio of the composite ground is set up, on the same time, the principles of the deformation harmony of the soil and the piles in the composite ground are also discussed. combining with results of this test, a formula which can calculate the bearing capacity that considering the effect of group piles of the composite ground is also deduced
視攪拌樁樁體為均質彈性介質，推導了復合地基中單樁有效樁長的理論計算公式；根據王啟銅柔性樁樁側摩阻力計算公式，以樁側土與樁體協調位移為前提推導了柔性樁樁側摩阻力的計算公式；以基底接觸應力均勻分佈，樁體、樁間土均質為前提，討論了樁，土協同工作原理，從而得出復合地基樁、土荷載變形特性，以及樁、土應力比計算公式；結合本次試驗，通過計算加載時樁體與土體的荷載分擔情況以及在極限狀態下樁土承載力發揮值，提出考慮群樁效應的攪拌樁復合地基承載力計算公式。 -
Secondly, by using the great fem programme, analyzes the mechanism of bearing and deformation of rigid - soften composite piles foundation. draw a conclusion : exist a specific value, when the number of the rigid pile less than it, increase the number of the rigid pile, effect of reducing the settlement of rigid - soften composite piles foundation is distinct, on the contrary, when the number of the rigid pile more than it, increase the number of the rigid pile, effect of reducing the settlement of rigid - soften composite piles foundation is indistinct. finally, analyze and sum up some important design ' s constitutes of the rigid - soften composite piles foundation
其次，採用有限元計算程序，對剛柔復合樁基進行了三維有限元分析，考察了在不同荷載水平下，不同剛柔性樁比例的情況下，復合地基的平均沉降量、土體的沉降等值線和應力等值線以及剛性樁和柔性樁樁頂荷載比值隨不同基礎荷載水平的變化規律，得出了一些具有實際指導意義的結論：當總樁數不變，長樁比例增加到一定程度時，再增加剛性長樁的數量對地基整體沉降幾乎沒有什麼效果；剛柔樁分佈一定，柔性樁實際承載力小於其極限承載力時，外加荷載的增加，剛性單樁和柔性單樁所承當荷載的比值基本不變。 -
I. e., the effect of linear and nonlinear analysis, the gradient of pile, the length of pile stick - up, and the horizontal force on the stability of pile stick - up were studied in details. 2. based on the difference of deformation and failure mechanism for pile side soil and pile toe soil, soil mechanics theory, and results of laboratory experiments and field tests, hyperbolic model and ideal elastic - plastic model were proposed to describe the behavior of the soil adjacent to the pile shaft and the soil at the pile toe, respectively
2 .根據土的非線性和非彈性特性以及室內與現場試驗結果，而且基於樁側土體與樁端土體在豎向荷載作用情況下的變形和破壞機理不同，提出應採用不同土體模型分別模擬樁側、樁端土體在打樁過程中所發揮的靜阻力，即：建立了樁側土體雙曲線模型，並推導了樁端土體理想彈塑性模型。
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