| 1. | Control system of dynamic train impact testing apparatus of beam with equal strength
等强度梁动应变冲击试验测试仪的控制系统 |
| 2. | Vibration times hardly have effect on the changing of the elastic strain in the condition of the dynamic stress
在动应力条件下，振次几乎对动应变中的弹性应变的变化没有影响。 |
| 3. | The paper presents a practical and feasible method for analyzing and measuring dynamic strain response of the pavement subjected to moving vehicle loads
给出了切实可行的移动车载下路面动应变响应的分析和测量方法。 |
| 4. | In addition , the research also makes it clear that damping ratio markedly rises with the augmentation of dynamic strain , and falls as the enhance of confining pressure or consolidation ratio
同时，砂卵石土的阻尼比具有随动应变增大而增大，随着围压或固结比的增加而减小的变化规律。 |
| 5. | The apparatus and the upper computer application may fit to the needs of dynamic strain impact testing apparatus of beam with equal strength and may be used to other dynamic testing by setting different parameters
经实验验证，本仪器及配套的上位机应用软件可以适应等强度梁冲击动应变测试测试的需求，同时通过设置参数还可以用于其它动态信号的测试。 |
| 6. | The result shows that the dynamic modulus of sandy pebble soil reduces nonlinearly with the accretion of dynamic strain , but increases with consolidation ratio , and affected little by the vibration frequency
试验结果表明，砂卵石土呈现出动弹性模量随动应变的增大而非线性地降低，动荷载频率对动弹性模量影响很小，动弹性模量随着固结比的增大而显著增大的规律。 |
| 7. | In the condition of the different confining stress and the temperature of 8 . 8 ? , dynamic strain of the asphalt concrete is very little within 100 vibration times under rather big dynamic stress , the total axial strain is only about 1 % ~ 2 % within 3000 ~ 5000 vibration times
在不同围压和8 . 8条件下，对沥青混凝土施加较大的动应力，在100振次以内所产生的动应变是很小的，即使施加3000 5000振次，轴向总应变也仅为1 2左右。 |
| 8. | Because of the high executing efficiency of the assemble language , it is used to write modularized program for the down - computer software this testing instrument has the function of testing static strain , dynamic strain , dynamic load - coefficient , frequency and so on
软件由上位机软件和下位机软件两部分构成：下位机软件采用模块化编程思想，选择执行效率最高的汇编语言编写系统软件。本测试仪器具有测试静应变量、动应变量、动荷系数和频率等功能。 |
| 9. | The following contents were discussed in detail : ( 1 ) effects of small particle content of the samples on the compaction characteristic of rock - salt ; ( 2 ) the value distributions of compressive strength of nature rock - salt ; ( 3 ) the effects of grain size , dry density and water content on compressive strength ; and ( 4 ) the development regularity of dynamic strain of rock - salt under traffic cyclic loading
主要探讨了岩盐试样中细粒含量比例对试样压实特性的影响规律；天然岩盐抗压强度的大小分布，以及岩盐抗压强度与粒径、干密度、含水量的关系；交通循环荷载作用下，岩盐的动应变发展情况等。 |
| 10. | The dynamic parameters of the asphalt concrete can be obtained through dynamic triaxial test , combined with the cunli chen ' s studying results , discovering that the dynamic stress - strain relationship obeys the hyperbolic model well , and t he maximum dynamic modulus edmax and the maximum shear modulus gdmax increasing along with the decreasing of the temperature and the increasing of consolidation ratio kc
通过振动三轴试验获得沥青混凝土材料的动力参数，并结合西安理工大学陈存礼老师的研究成果。发现动应力与动应变的关系较好地符合双曲线规律，最大动模量e _ ( dmax )和最大剪切模量g _ ( dmax )随着温度的降低、围压和固结比kc的增大而增大。 |
