查询词典 rutting

Image analysis based on coarse aggregate shape and morphology assessment has been of recent research efforts to successfully indices to results from manual testing methods as well 3 as to pavement response and performance. The objective of this study is to to observes the moves of coarse aggregate of stone mastic asphalt and dense asphalt concrete by using image analysis technique.To establish the model of coarse aggregate moving behavior and asphalt pavement rutting.

本研究计画由载重过程，以影像处理分析技术观察SMA 级配及密级配粗粒料移动轨迹变化，以定量描述SMA 级配粗粒料构架形成机制、抗车辙能力成因、粗粒料材料形状组合因子偏差等影响，建立粗粒料移动轨迹与车辙量之行为模式，深入了解SMA 材料载重行为，俾供应用於公路及机场铺面能完全发挥其特性。

The order contact of skeleton is similar to that of common traffic and is suitable to be kept between 1.07 and 1.15. When adopting dynamic stability index to evaluate the high temperature performance of asphalt mixture, it is likely to stretch the work of modified asphalt and there is a discrepancy between the capacity to evaluate different gradation designs and the practical facts. In the late process of creep, stiffness module index can evaluate the high temperature performance of asphalt mixture which is relatively objective. The rutting prediction model based on this is relatively reliable.

采用车辙动稳定度指标评价沥青混合料高温性能时，可能夸大了改性沥青的作用，其对不同级配优劣的鉴别能力与实践事实间也存在一定的差异，而蠕变劲度模量指标能够较为客观地评价沥青混合料的高温稳定性能，且在此基础上建立的车辙预估模型经实践检验具有较高的可靠性。

Results of analysis show that Generalized Paris Law can consider the complex crack propagation in the material of the pavement structure. The fatigue life of the pavement increases with increasing thickness of surface layer in a power function. Use of a thicker surface layer may extend the service life of the asphalt pavement. The fatigue life increases with decreasing modulus of surface layer in a power function with a negative exponent. However, since reduced modulus would scarify the structural strength and might cause rutting-related distress, caution should be taken when using low modulus materials for improving fatigue performance of asphalt pavements. The fatigue life increases with increasing modulus of base material in a power function. However, the fatigue life can not infinitely increases with increasing modulus of the base.

计算与分析表明：广义Paris公式可以考虑沥青路面结构内材料复杂的裂缝扩展：沥青面层的疲劳寿命随着面层厚度的增加以幂函数的形式增加，适当增加沥青面层厚度可以提高路面的使用寿命；沥青面层的疲劳寿命随着面层材料模量的降低以负指数的幂函数形式增加；由于材料模量的降低将牺牲路面的整体强度并可能引起路面车辙类损坏，以此提高疲劳寿命的方法应慎重对待；沥青面层的疲劳寿命随着基层材料模量的增加呈幂函数的形式增加，但由疲劳方程可以看出，寿命并不是随基层材料模量的增加而无限的增加，疲劳曲线在经过一个上升段后，逐渐趋于一个常数值，这说明，这时基层模量对寿命已不作关键性贡献；随着底基层厚度的增加，面层的疲劳寿命近似地呈线性函数增加，但效果并不很明显。

Through comparing the relation of APA test and shearing test, it put forward the maximal to allow shearing strain of RSCH test:?max, the maximal repetitive shearing times: Nmax and minimum to allow APA rutting dynamical stability, which is comparatively suitable to examine the high-temperature performance of the asphalt mixture.

通过比较APA 试验与剪切试验的关系，提出采用RSCH 试验最大允许剪切应变γmax、最大重复剪切次数Nmax 以及最小允许APA 车辙动稳定度，来检验沥青混合料的高温性能是较为合适的。

In this paper,the affecting factors on thermal stability and rut resistance property of asphalt mixtures are discussed.Based on the wheel rutting test for different type asphalt mixtures at high temperature,gray correlation degree between each factor and dynamic stability and total plastic deformation was analyzed respectively.

本文从混合料角度分析了影响沥青混合料高温抗车辙性能的因素，并通过不同因素条件下沥青混合料高温车辙试验，分别以动稳定度和总变形量作为参考序列，对影响因素进行灰关联分析。

Road engineer;asphalt pavement;FEM;Upslope;rutting

道路工程；沥青路面；有限元；上坡；车辙

Rutting, the most common form, consists of channelized depressions in the wheelpath which develop from densification and/or lateral movement of the mixture.

车辙是最常见的形式，是车辆通过位置处产生的带状凹槽，其因沥青混凝土混合物的稠化和／或横向运动而引起。

Amur tiger spent most time in moving, more time in rutting, copulating and other behaviors, and less time in resting.

雌虎在妊娠期较多的时间用于休息和运动，取食、站立、社会和其它行为的时间均较少；产仔期最多的时间用于休息，其次是运动，用于产仔和其它行为的时间较多，用于取食的时间最少；哺乳期最多的时间用于休息，其次是哺乳和运动，用于取食和其它行为的时间较少。

Three types of base asphalt and six SBS were used to produce SBS modified asphalt. The interaction of SBS modified asphalt was discussed in different states between the base asphalt and SBS based on their compositions. Through the traditional tests, such as penetration, soften point and ductility, and US SHRP tests, the results indicated that influences to affect the temperature susceptibility, high and low temperature performance, aging characteristics are base asphalt, SBS types and their dosages. The functions of penetration to viscosity and complex shear modulus G~* to complex dynamic shear viscosity η~* were set up, and then theviscosity-temperature susceptibility of wide temperature span and the calculation method of low temperature viscosity were obtained."Process" evaluation criterions, high grading critical temperature T_ and low grading criticaltemperature T_ , were suggested according to the high and low temperatureperformances of SBS modified asphalt. Using the experience of Repeated Creep and Recovery Test for Binders, a new high-temperature evaluation index,modification rutting factor G~*~(-9) was obtained. The results after RTFO and PAV aging indicated that traditional tests didnt differentiate base asphalt and SBS modified asphalt, but dynamic mechanics temperature spectrum and G*-5 black chart clearly reflected the influence of aging to the SBS modified asphalt. With the IR and GPC tests, the reason of aging to the SBS modified asphalt were due to asphalt phase oxygenated and SBS phase depredated.

论文选择3种油源的基质沥青和6种SBS改性剂制备改性沥青，通过分析基质沥青和SBS改性剂的组成结构特点，得出了不同状态下SBS改性沥青的SBS与基质沥青的相互作用机理；通过针入度、软化点、延度等常规试验以及美国SHRP试验，分析了基质沥青、SBS改性剂类型与剂量对SBS改性沥青的温度敏感性、高低温特性及老化特性的影响；建立了针入度-粘度、复数模量G~*-复数粘度η~*的换算关系，得出了宽温度域的粘温指数VTS和较低温度下粘度的计算方法；通过高低温性能分析提出了&过程&评价参数高温等级温度T_和低温等级温度T_；借鉴重复恢复与蠕变试验研究成果，得到了SBS改性沥青高温评价指标改进型抗车辙因子G~*~(-9)；RTFO和PAV老化后的性能试验结果表明，常规试验难以区分SBS改性沥青与基质沥青的差异，而动态力学温度谱、G~*-δ黑斑图可以反映老化作用对SBS改性沥青的影响，且通过IR试验和GPC试验得出SBS改性沥青老化是沥青相的氧化和SBS的降解共同引起的；通过不同温度下SBS改性沥青混合料的旋转压实SGC试验，根据粘度与剪变率的关系，提出用剪变率60(1／s)测试SBS改性沥青的粘温曲线，并按照0.17±0.02Pa.s和0.28±0.03Pa.s确定施工温度。

Study about the rutting of asphalt pavement is one of the focal problems to road engineering.

对沥青路面车辙问题的研究一直是道路工程领域关注的热点之一。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐