1)consolidation coefficient固结系数
1.Back analysis of consolidation coefficient of soils and prediction of long term post-load settlement of a deep-water port;某深水港土层固结系数反演及工后长期沉降预测
2.Effect of sample disturbance on consolidation coefficient;取样扰动对固结系数的影响研究
3.Variation of consolidation coefficient for soft soil in preloading improvement;预压加固中软土固结系数的变化及分析
英文短句/例句
1.The Finite Difference Analysis of an Radial Consolidation Equation with Changing Coefficient of Consolidation;考虑固结系数为非常数时固结方程差分解
2.Analysis of consolidation coefficients in classic small-strain consolidation theory对经典小变形固结理论固结系数的辨析
3.In the calculation of consolidation degree, the onsolidation coefficient Cv ,which varies with the effective stress during consolidation, is usually regarded as constant.在固结度计算中通常将固结系数视为常数,实际上并非如此。
4.The Mechanism Study of the Consolidation Coefficient of Soils Determined by Piezocone Penetration Test;孔压静力触探测试土的固结系数机理研究
5.Meamwhile, the effect of reconsolidation index to the post cyclic shear strength increment is analyzed.同时,分析了循环荷载作用下再固结系数对粘土强度增长的影响。
6.Authors adopted an average secondary consolidation coefficient in settlement calculation of peal foundation in order to make results more reliable.为了使沉降计算更可靠,建议泥炭地基的沉降计算采用平均次固结系数。
7.Research on relationship between permeability coefficient and consolidation stress of normal consolidation clay正常固结软土渗透系数与固结应力关系研究
8.consolidation parameter固结参数 -土力学
9.fixed storage patter固定存储器数据结构
10.The industry capital management platform is designed into three-level of internet system so as database structure.将行业固定资产管理平台设计为3级网络系统和3层数据库结构。
11.Study on the Consolidation Theory for Vertical Drains Considing the Variety of Permeability Within the Smear Zone;考虑涂抹区渗透系数变化的砂井地基固结理论研究
12.Study on the Impact of Flexible Pressurized Anchor's Structure Parameters and Wall Rock Pressure on Anchoring System柔性注压锚杆结构参数与围岩压力对锚固系统影响的研究
13.Theory Study on Design Parameters of the Horizontal Drainage System of Consolidation Method软基排水固结处理水平排水系统设计参数的理论研究
14.Theoretical Derivation of "Plywood Wall" Method Added Material Utilization Coefficient in Reinforced Axial Masonry Structure轴压下砌体结构加固后加材料强度利用系数的探讨
15.Laboratory Determination of One-Dimensional Linear Over-Consolidation Computational Parameters of Soft Soil超固结土的一维固结计算参数及其测定
16.Of a fixed radix numeration system, having a radix of ten.以10为基数的固定基数记数表示系统。
17.Numerical computation of aerodynamic drag coefficient for high temperature particles高温固体颗粒气动阻力系数数值计算
18.Numerical Simulation of Fluid-Structure Interaction Arising from Bottom Slamming;船底结构砰击时的流固耦合数值模拟
相关短句/例句
coefficient of consolidation固结系数
1.A new method for evaluating coefficient of consolidation;确定固结系数的固结速率半对数法
2.Research on coefficient of consolidation of soft clay under compression;软土压缩过程中固结系数的研究
3.A method for evaluating coefficient of consolidation;室内固结系数的一种推算方法
3)fixity factor固结系数
4)coefficient of consolidation固结固结系数
5)secondary consolidation coefficient次固结系数
1.Relationship between loads and secondary consolidation coefficients of soft clay soils;软土次固结系数与压力的关系
2.It is found that with the increase of consolidation pressure p,the secondary consolidation coefficient C■ increases firstly to a maximum value and then decreases under initial loading,but the consolidation pressure corresponding to the maximum value is not equal to the preconsolidation pressure.结果表明:初始加荷时,次固结系数C■随固结压力p先增大后减小,但次固结系数峰值对应的荷载并非前期固结压力;在超固结状态下,第1次再加荷时,C■随p增大而减小,但35次荷载循环后再加荷时即使在超固结范围内C■随p增大而增大;次固结系数随荷载循环次数增加显著减小;荷载比对次固结系数的影响明显。
3.The secondary consolidation coefficient is not related to time of sustained loads,and it becomes larger as the reloading pressure increases and becomes less with the pre-consolidation pressure.试验表明:超载卸荷后软土的再压缩过程较原压缩过程的主固结时间大大缩短,次固结系数在较长的时间内和时间无关,随再加荷压力的增大而增大,随着预固结压力的增大而减小,次固结系数和超载比之间具有规则的对应关系,可以用双曲线简化模型模拟;根据次固结系数双曲线模型建立的次压缩变形计算公式,既反应了软土本身性质的影响,也反应了预固结压力和再加荷压力的影响。
6)coefficient of secondary consolidation次固结系数
1.Research of the factors influenced coefficient of secondary consolidation of expressway soft foundation;高速公路软土地基次固结系数影响因素研究
2.Based on a series of laboratory consolidation test of wetland soft soil in cold area,the consolidation behaviors of soft soils in cold area and their change rule of the coefficient of consolidation and coefficient of secondary consolidation were researched.为了研究寒区湿地软土固结变形特性,弄清其固结和次固结系数变化规律,对两类软土进行了单向固结压缩试验。
3.Based on a series of 1D consolidation tests,the characteristics of secondary consolidation of compacted loess were studied and the influence of consolidation pressure,consolidation time,compression index and overload ratio on the coefficient of secondary consolidation was analyzed.试验结果表明:随着固结压力的变化,压实黄土的次固结系数表现出与当前应力状态有关的变化规律。
延伸阅读
阀门技术注重流量系数和气蚀系数阀门的流量系数和气蚀系数是阀的重要参数,这在先进工业国家生产的阀门资料中一般均能提供。我国生产的阀门基本上没有这方面资料,因为取得这方面的资料需要做实验才能提出,这是我国和世界先进水平的阀门差距的重要表现之一。3.1、阀门的流量系数
阀门的流量系数是衡量阀门流通能力的指标,流量系数值越大,说明流体流过阀门时的压力损失越小。
按KV值计算式
式中:KV—流量系数
Q—体积流量m3/h
ΔP—阀门的压力损失bar
P—流体密度kg/m3
3.2、阀门的气蚀系数
用气蚀系数δ值,来选定用作控制流量时,选择什么样的阀门结构型式。
式中:H1—阀后(出口)压
H2—大气压与其温度相对应的饱和蒸气压力之差m
ΔP—阀门前后的压差m
各种阀门由于构造不同,因此,允许的气蚀系数δ也不同。如图所示。如计算的气蚀系数大于容许气蚀系数,则说明可用,不会发生气蚀。如蝶阀容许气蚀系数为2.5,则:
如δ>2.5,则不会发生气蚀。
当2.5>δ>1.5时,会发生轻微气蚀。
δ<1.5时,产生振动。
δ<0.5的情况继续使用时,则会损伤阀门和下游配管。
阀门的基本特性曲线和操作特性曲线,对阀门在什么时候发生气蚀是看不出来的,更指不出来在那个点上达到操作极限。通过上述计算则一目了然。所以产生气蚀,是因为液体加速流动过程中通过一段渐缩断面时,部分液体气化,产生的气泡随后在阀后开阔断面炸裂,其表现有三:
(1)发生噪声
(2)振动(严重时可造成基础和相关构筑物的破坏,产生疲劳断裂)
(3)对材料的破坏(对阀体和管道产生侵蚀)
再从上述计算中,不难看出产生气蚀和阀后压强H1有极大关系,加大H1显然会使情况改变,改善方法:
a.把阀门安装在管道较低点。
b.在阀门后管道上装孔板增加阻力。
c.阀门出口开放,直接蓄水池,使气泡炸裂的空间增大,气蚀减小。
综合上述四个方面的分析、探讨,归纳起来对闸阀、蝶阀主要特点和参数列表便于选用。两个重要参数在阀门运用中 。