It also carries on four levels of single-factor laboratory experiments with three sample soils: clay, cohesionless soil and sandy soil, concerning three elements: cement mixture ratio, age, water content in order to find out the contractibility under different test conditions, and also the permeability of locking surface between cement soil and concrete.

試驗(yàn)選擇粘土，粉砂土和粗砂土三種土質(zhì)亚洲性夜夜综合久久麻豆，采用室內(nèi)試塊試驗(yàn)的研究方法片黄色网站天天，選擇水泥摻入比、齡期免费看黄免费的免费、含水量三種因素一级牲活片在线观看，分別進(jìn)行了四種不同水平的單因素試驗(yàn)自拍偷拍2020，研究水泥土在不同養(yǎng)護(hù)條件下的收縮性，通過(guò)水泥土和混凝土咬合面滲透試驗(yàn)來(lái)檢驗(yàn)兩者咬合面的抗?jié)B性超碰国产在线观看。

Based on definitions of stress and strain, and the D'Alembert's principle, stress and strain of soils at various depths were derived from the data of acceleration, displacement, as well as excess pore pressure measured in the test. The stress paths and stress-strain relationships of saturated sand during the shaking event, and their connection with development of excess pore pressure were revealed.

根據(jù)應(yīng)力和應(yīng)變的定義以及達(dá)朗貝爾原理亚洲精品区第3页，由試驗(yàn)觀測(cè)的土體加速度、位移和孔隙水壓力數(shù)據(jù)直接推導(dǎo)得到不同深度處砂土的應(yīng)力和應(yīng)變黄色视频三级片AAAAAAAAA，揭示了振動(dòng)過(guò)程中飽和砂土的應(yīng)力路徑和應(yīng)力-應(yīng)變關(guān)系演化過(guò)程伊人无码视频综合网，以及與超靜孔隙水壓力發(fā)展的聯(lián)系。

The so called state-dependent dilatancy theory was suggested and applied in sand modeling.

本文就砂土的狀態(tài)及其描述18禁止看污污网站在线看、剪脹理論的發(fā)展国产美女一级特黄A级APP全部、砂土本構(gòu)模擬等方面進(jìn)行介紹。

The volumetric strain due to stress-dilatancy of sand is found to be composed of a reversible dilatancy component and an irreversible dilatancy component.

基于對(duì)較高精度的砂土扭剪試驗(yàn)成果的分析亚洲无码第32页，表明砂土的剪脹是由一個(gè)完全可逆的體應(yīng)變分量和一個(gè)不可逆的體應(yīng)變分量構(gòu)成的亚洲日韩激情无码一区。

Through detailed analyzing some influencing factiors of sand liquefaction, seven parameters were selected as assessment indexes. They are earthquake magnitude, peak ground surface acceleration, standard penetration value, specific penetration resistance, relative compaction, average particle diameter, and water table. The extension assessment model has been established that was applied to assessment of sand liquefaction potential. The model had been trained by the historical data and has been assessed in virtue of sand liquefaction from the historical data by simulating, and got a excellent result. After introduction of the support vector machine theory, this paper established the assessment model of sand liquefaction based on the support vector machine, and assessed in sand liquefaction from virtue data of some fields in home and overseas with the tool Libsvm, which was programmed based on the support vector machine theory. And got a good coherency between the assessement results and the actual liquefaction.

在詳細(xì)分析影響砂土液化因素的基礎(chǔ)上，選取了震級(jí)M日韩不卡中文字幕在线看、地面最大加速度g_国产高清一级A片在线视频爱微、標(biāo)準(zhǔn)貫入擊數(shù)N_(63.5)、比貫入阻力P_s岛国精品、相對(duì)密實(shí)度D_r黄色国产免费国产、平均粒徑D_(50)、地下水位d_w等7個(gè)參數(shù)作為評(píng)價(jià)指標(biāo)免费裸体黄网站在线观看，建立了砂土液化勢(shì)的可拓評(píng)價(jià)模型国产在线一区二区三区麻豆，并對(duì)歷史數(shù)據(jù)進(jìn)行仿真評(píng)價(jià)，取得了較好的應(yīng)用效果色哟哟在线精品入口网站；在對(duì)支持向量機(jī)的理論進(jìn)行介紹后欧美一级夜夜爽，本文建立了基于支持向量機(jī)的砂土液化勢(shì)評(píng)價(jià)模型，并利用在基于支持向量機(jī)理論的Libsvm軟件中文字幕第9页亚洲，對(duì)若干國(guó)內(nèi)外場(chǎng)地的現(xiàn)場(chǎng)實(shí)測(cè)數(shù)據(jù)進(jìn)行了評(píng)價(jià)九九在线精品免费视频，評(píng)價(jià)結(jié)果與現(xiàn)場(chǎng)表現(xiàn)基本上一致。

Numerical simulation and shaking table tests for acceleration response of piles in liquefiable ground were performed under three earthquake events.

結(jié)果表明：三種地震輸入下中文精品99久久国产，自下而上沿樁-柱墩長(zhǎng)度方向自拍高潮日韩在线视频播放免费观看，加速度峰值放大系數(shù)變化基本一致且均出現(xiàn)在10～20s時(shí)段內(nèi)，加速度時(shí)程曲線的形狀也極其相似黑人A片特级又粗又大；壓縮0.15g El Centro波輸入下加速度反應(yīng)在砂土層與黏土層過(guò)渡帶有增大趨勢(shì)国产一区精品福利、在地表則有一定程度減小，且壓縮0.15g El Centro波較0.15g El Centro波輸入下均偏小AV网址导航，0.15g El Cen-tro波輸入下自下而上樁的加速度時(shí)程幅值和峰值放大系數(shù)的試驗(yàn)值久久综合加勒比金8天国、計(jì)算值均一直有較大幅度增大；0.5g El Centro波輸入下超碰碰免费，加速度時(shí)程幅值的計(jì)算值和試驗(yàn)值在樁折斷位置之下一直增大亚洲黄色、至砂土層與黏土層過(guò)渡帶則大大減小亚洲经典一区二区三区，加速度峰值放大系數(shù)的試驗(yàn)值和計(jì)算值在砂土層與黏土層過(guò)渡帶突變?cè)龃蟆⒍诘乇韯t明顯減小a人人操人人干，且較0.15g El Centro波輸入下樁的峰值放大系數(shù)要偏小欧美就要操。

The main achievements could be summarized as follows.1. The basic stress-strain characteristics and related physical mechanisms for sands under cyclic rotation of principal stress axes were investigated based on three kinds of drained tests including fixed principal stress axes, cyclic rotation of principal stress axes with magnitudes of principal stresses kept constant, and cyclic changes of principal stresses in both their axes and magnitudes. The main deformation behavior of sands with inherent anisotropy under cyclic rotation of principal stress axes with magnitudes of principal stresses kept constant was obtained in the following.

本文從試驗(yàn)研究、規(guī)律分析麻花豆传媒剧国产剧免费、數(shù)學(xué)建模和工程應(yīng)用四個(gè)方面男男无码免费专区男人的天堂，對(duì)應(yīng)力主軸循環(huán)旋轉(zhuǎn)條件下砂土的變形特性進(jìn)行了較為深入的研究，取得了如下主要研究成果：(1)基于對(duì)飽和砂土進(jìn)行的主軸固定單調(diào)剪切亚洲簧片AB在线观看、純應(yīng)力主軸循環(huán)旋轉(zhuǎn)以及主應(yīng)力幅值與應(yīng)力主軸耦合循環(huán)變化的三類(lèi)完全排水試驗(yàn)成果欧美性交三级视频，分析和揭示了應(yīng)力主軸循環(huán)旋轉(zhuǎn)條件下砂土的基本變形規(guī)律，并探討了其受力變形的內(nèi)在機(jī)理一二三区无卡高清视频在线播放。

The rate of wetting front advance and infiltration rate under certain ponded infiltration was significantly reduced by Sodium Polyacrylate , and as a result effectively reduced water in a sandy soil leaking to a deeper layer under the plough layer.

砂土的飽和導(dǎo)水率隨著高分子化合物聚丙烯酸鈉用量增加而降低亚洲毛片不卡88AV在线，在恒定水頭入滲條件下，聚丙烯酸鈉降低了水分向深層運(yùn)移的速度亚洲午夜福利电影，同時(shí)降低了砂土的入滲速率性交毛片视频免费看，可以有效降低砂土水分的深層滲漏。

Numerical simulations by assemblies of circular panicles can qualitatively reflect the general characteristics of liquefaction behavior of sand. The interval effect of aspect ratio of elliptical panicle on the mechanical behavior of numerical sample is obtained, and the reason is related to the initial average co-ordination number. The regularity of evolution of fabric in the process of sand liquefaction under cyclic loading can be qualitatively achieved by using the numerical sample randomly mixed of panicles with different shapes. Numerical simulations can not only demonstrate the macro phenomenon of particle breakage, mostly importantly, it can also expose the evolution of particle breakage microscopically, and would contribute to further research of the micromechanics of particle breakage.

研究結(jié)果表明：Hertz-Mindlin非線性接觸模型適用于變圍壓條件下砂土力學(xué)性質(zhì)模擬欧美一区欧美一区；純圓顆粒模擬能夠定性地反映飽和砂土振動(dòng)液化的一般規(guī)律日韩孕妇自拍视频直播在线观看网站；顆粒長(zhǎng)短比變化對(duì)砂土力學(xué)性質(zhì)的影響具有區(qū)間效應(yīng)，其原因與粒間初始平均接觸數(shù)有關(guān)A级毛片视频；不同形狀隨機(jī)混合試樣能夠從定性規(guī)律上反映振動(dòng)液化過(guò)程中砂土的細(xì)觀組構(gòu)演化規(guī)律少妇AA毛片在线播放；數(shù)值模擬不僅可得到顆粒破碎宏觀響應(yīng)，而且可以分析內(nèi)部接觸力變化和實(shí)現(xiàn)對(duì)粘結(jié)破裂位置的追蹤性直播无遮免费观看网站，從而可進(jìn)一步研究顆粒破碎細(xì)觀力學(xué)機(jī)制精品福利。

The time from saturated soil moisture content to wilting percentage of Aeolian sandy soil, Loessial soil and Lou soil was extended by 244.72%,251.11% and 36.31% respectively when Sodium Polyacrylate was applied at the suggested dosage.

風(fēng)砂土、黃綿土與塿土的蒸發(fā)強(qiáng)度隨著高分子化合物聚丙烯酸鈉用量增加而降低18岁禁看黄色，聚丙烯酸鈉用量為0.5%時(shí)，砂土91超碰A、黃綿土與塿土10天累積蒸發(fā)量分別較對(duì)照降低了59.89%久久夜色精品国产欧美一区不卡、48.92%與55.81%；綜合考慮對(duì)土壤蓄水與蒸發(fā)能力的影響老妇女AV，聚丙烯酸鈉用量為風(fēng)砂土性爱一级毛片、黃綿土應(yīng)控制在0.08%～0.2%，塿土中用量必須嚴(yán)格控制在0.2%左右亚洲欧美日韩视频二区；在上述用量條件下91人妻视频nnnnnn，風(fēng)砂土、黃綿土一级裸交有声音A片、塿土從飽和含水量蒸發(fā)失水至凋萎含水量的時(shí)間分別被延長(zhǎng)了244.72%免费观看在线Aⅴ播放、251.11%與36.31%左右精品视频全部免费。

clayey sand：粘質(zhì)砂土

sandy clay,砂質(zhì)粘土 | clayey sand,粘質(zhì)砂土 | sandy loam,壤土国产浮力草草影院入口、亞黏土

coarse sand：粗砂土 粗砂

coactor 相互作用者 相輔者 Y | coarse sand 粗砂土 粗砂 Y | coarse-grained 粗粒的 粗粒狀 Y

coarse sand：粗砂土

03.039 黏土 clay | 03.040 粗砂土 coarse sand | 03.041 細(xì)砂土 fine sand

gritty soil：粗砂土

gray desert soil 灰漠境土,灰鈣土 | gritty soil 粗砂土 | groundwater soil 潛水土,潛育土

loamy sand：壤砂土

03.028 砂土 sand | 03.029 壤砂土 loamy sand | 03.030 粉[砂]土 silt

Sandy soil vegetation：砂土植物羣

砂土 Sandy soil | 砂土植物羣 Sandy soil vegetation | 白檀精油 Santalene

Sandy soil vegetation：砂土植物群

sandy soil 砂土,砂質(zhì)土壤,含沙土 | sandy soil vegetation 砂土植物群 | sandy well 出砂油井

sandy soil liquefaction：砂土液化

振動(dòng)液化:vibrating liquefaction | 砂土液化:sandy soil liquefaction | 砂土液化:liquefaction of sands

silicicolous plants：砂土植物

silicicoles 砂土植物 | silicicolous plants 砂土植物 | silicified cell 硅質(zhì)細(xì)胞

earthquake stonebrash liquefaction：地震砂土液化

砂土液化:liquefaction of sand foundation | 地震砂土液化:earthquake stonebrash liquefaction | 抗液化剪應(yīng)力:con-liquefaction shear stress