Experimental Research on Wind Sand Flow and Nonlinear Dynamical Characteristics of Bed Load Motion 风沙流的实验研究和蠕移动的非线性动力分析
The results have shown that the diameter of pile, the length of pile and the relative density of sand could affect the total load, shaft friction and end bearing of pile. 经由数值分析结果可明显看出压力桩及拉力桩之承载力、摩擦力与点承力皆因应著桩径、桩长及砂土之相对密度而变化。
Study on eolian sand subgrade slope through failing laboratory simulation of static load 风积沙路基边坡静力荷载破坏室内试验模拟研究
In the theory guidance of key stratum of ground control and model of "short block structure of voussoir beam" and "step voussoir beam", sand dynamic load transmitting test model is constructed and intellectual dynamic data acquisition instrument is explored. 并以岩层控制关键层理论和浅埋煤层短砌体梁、台阶岩梁结构模型为理论指导,构建了测试浅埋煤层砂土层动态载荷传递模型;开发研制智能动态数据采集系统;
The results showed that the compaction process of green sand divides into three steps: the formation of impact load at the top of green sand ( over the plate), the propagation of incident stress wave and the propagation of reflected stress wave. 分析表明,型砂紧实过程可分为顶部(盖板上方)阶跃载荷的形成、入射应力波的传播和反射应力波的传播三个紧实阶段。
The behavior of pile in sand by axial low& frequency load 砂土中桩在低频轴向动力荷载作用下的特性
"U" Style Curve of Complex Resistivity of Shaly Sand Transport of Nonuniform Bed Load 岩石复电阻率的U形曲线非均匀推移质输沙率
The distribution of pile shaft resistance and the formation of shear band as well as time-pile displacement relation, the distribution and velocity of particle and force chains distribution of sand of pile on uplift load are studied. 对桩-桶基础在上拔荷载作用下进行了颗粒流数值模拟,主要研究分析了桩-桶基础在上拔荷载作用下的基础时步~位移关系、颗粒分布及颗粒速度。
Based on investigation and analysis of sand wave data from the flumes and rivers both abroad and at home, the formulae for the height and velocity of sand wave and the bed load rate are obtained in this paper. 本文对国内外有关水槽与天然河道实测顺行沙波资料进行了分析研究,提出了计算沙波波高及波速和推移质单宽输沙率的公式。
The Application of Sand Wick Stacking Load and Consolidated Drained Technique to Soft Soil Foundation in Highway 袋装砂井堆载预压排水固结法在软土地基中的应用
The other is the data about Particle Flow Code ( PFC) image of sand around pile-bucket foundation on uplifting load. 第二部分为对在上拔荷载作用下对桩-桶基础周围的土体颗粒流数值模拟图像的细观分析结果。
An engineering example is introduced, which applies prefabricated strip to treat the deep silt with dredger-reclaimed sand as load in Zhanjiang reclamation project. 介绍了在湛江滨海围海造陆工程中,以吹填砂为堆载,采用塑料排水带对深厚淤泥进行处理的工程实例。
The vortex tube sand exclusion was used to breed out the traction load that mains exist in the bottom of channel. 涡管排沙主要用来排除渠道底部推移质泥沙;
Sand wave motion and bed load discharge 沙波运动与推移质输沙率
Then the crust deformation of on sand bed is simulated under concentrated load. 在此基础上,导出化学固沙结皮的弹性模量E和蠕变函数公式,并数值模拟了沙床上的结皮在集中载荷作用下的变形。
Research on Mechanism of Sand Load Transmitting in Shallow Seam 浅埋煤层砂土层载荷传递机理研究
Based on the macroscopic and microscopic features of contact, the incremental elastoplastic constitutive relation for the calcareous sand structure interface was developed under monotonic load. 基于接触面的宏、细观物理特征,建立了单调加载条件下钙质砂与结构接触面的弹塑性增量本构关系。
Based on the fruit of the physical model experiment in favorable piloting year, this issue analysises the concentration distribution at the section of the piloting gate, the sand ratio change in the raceway, the suspended load gradation change and the variation in water level. 本文依据物理模型试验中设计引水不利年的部分成果,系统分析了放淤闸断面含沙量分布,引水渠引沙比变化,悬移质级配变化,引水渠处水位变化。
Influence of sand wave migration on non-saturated suspended load transport in alluvial rivers 沙波运动对冲积河流悬移质冲刷不平衡输沙的影响
An Analytical Study on Consolidation Settlement Characteristics of the Sand Drain ( Wall) Subgrade under Embankment Load at Soft Soil Area 软土地区路堤荷载作用下砂井(墙)地基固结沉降特性分析研究
A Calculation Method of Sand Bed Load Rate 沙质推移质断面输沙率计算方法
The present paper introduces the design and construction of a multistorey brick building on a marine sedimentary soft clay foundation by means of Combination of sand cushion and sand drain, with no load increment applied before the upper structure's construction. 本文主要介绍:在近期海相沉积的软粘土层上,采用砂垫和砂井结合(即混合砂地基),上部结构施工前不进行堆载预压的办法,修建多层砖房的设计和施工。
The thickness of the completely liquefied sand layer increases with the increase of load amplitude. 随着载荷幅值的增加,土体上部完全液化的土层厚度增加。
Using the new apparatus, an initial shear-wave velocity control technique of saturated sand sample in the triaxial load cell was developed. 利用该联合试验装置,研究了控制三轴压力室内土样初始剪切波速的方法;
The behavior of grouting pile inserted into sand or gravel layer under axial load 嵌入砂或砂砾层中的桩底灌浆桩竖向承载性能研究
Use natural, raft or sand pile foundation depending upon the tank features and load distribution; 由油罐特性、荷载分布特性决定采用天然地基、筏片基础、砂桩等相应的基础方式;
Rainfall and potential evapotranspiration system error on non-point source pollution load of a similar nature are the greatest uncertainties in the sand, followed by TP load, river flow and TN load. 降雨量与潜在蒸散量系统误差对非点源污染负荷的影响具有相似性,均是泥沙不确定性最大,然后依次是TP负荷、河流流量和TN负荷。
In fact, the bagged sand well can also bear a part of the load at the same time as a result of forming the sand well composite foundation. 而实际上,袋装砂井也直接承受了部分荷载,即形成了砂井复合地基。
The abrasive wear test with wet sand rubber wheel tester and the dynamic load impact wear test were taken to study materials wear characteristics under different wear way. 为深入研究材料在各种磨损方式下的磨损特性,扩大该堆焊材料的应用范围,还进行了湿砂橡胶轮磨料磨损试验,动载冲击磨损试验。