然后研究了在平板撞击下的一维应变波的传播和衰减特性。
Then, the propagation of one-dimensional strain wave caused by the plate impact is investigated, and the attenuation of stress wave is evaluated.
应变波通过铁磁性杆件时，由于压磁效应，可以激发出不均匀的磁流。
When strain waves pass through a ferromagnetic bar, owing to piezomagnetic effect, a nonuniform magnetic current will be stimulated by the strain wave simultaneously.
本文采用超动态应变测试系统，实测了小药量条形药包在岩石模型中爆炸产生的应变波，对测试到的耦合装药加载条件下介质中区产生的轴向和切向爆炸应变波信号进行了分析。
In the paper, experiments in testing blast strain waves, generated from the explosion of some small cylindrical charge, were carried out in rock model using the ultra-dynamic strain testing system.
目前，低应变反射波法以其现场测试简便快捷的优势占据了桩基完整性检测的大部分市场。
At present, the reflecting wave method on low strain occupy the most marketplace in detecting the pile's integrality by advantage of its simple and convenient measuring way.
目前为检测其桩身完整性应用最多的方法是低应变反射波法。
Now the most available method of pile integrity testing is low strain pile integrity test (LSPIT).
桩基低应变动力反射波法检测，以其特有的优势在工程中得以广泛应用。
The measuring of dynamic reflected waves for low strain of pile base has been applied.
现场载荷试验及反射波法低应变动力检测试验表明，CFG桩桩身完整性很好，复合地基的承载力提高显著，证明该工程的CFG桩复合地基设计及施工是成功的。
The results of plate loading test and low strain dynamic testing show that the quality of CFG pile composite foundation is good and subgrade bearing capacity has been improved successfully.
尽管低应变反射波法日益得到了工程界的肯定及大力推广，但该方法也有其局限性，尚有许多问题没有解决。
Though it has been gradually accepted and actively promoted by the Engineering Field, the low-strain reflection wave method still has its limitations and a lot of problems have not been solved yet.
简要介绍了低应变反射波测桩的原理，以及影响检测桩身质量的影响因素，并介绍了在实际工程中的应用情况。
It is introduced briefly that the principles of testing piles by low-strain reflected wave, and the factors influencing the quality of pile shaft as well as its applications in actual projects.
然而混凝上结构中的应力波传播特性实际上又依赖于混凝土在高应变率下的率型本构关系。
Moreover, the characteristics of stress waves propagating in concrete structures are essentially dependent on the rate-dependent constitutive relation of concrete materials under high strain-rates.
通过工程实例分析，论述了反射波法低应变动载检测的原理和在桩基础工程现场检测中的应用。
According to the analysis of engineering example, the paper discussed the principle of reflected wave method and its application for detecting quality of low strain pile foundation.
在爆炸或冲击荷载作用下，钢板间会引起复杂的应力应变状态的变化，表现在应力波传播比较复杂。
That the complex stress state change is aroused between armor plates under explosive or shock force is expressed by complex stress wave propagation.
对非线性弹性材料桩身完整性检测的低应变反射波新方法进行了研究。
A new reflection wave method is presented for inspecting the pile integrity of the non-linear elastic material under the condition of low strain.
0级大地震震中周围16个台站的四分量钻孔应变观测资料，对地震前驱波进行检验。
0 earthquake are statistically tested by use of the observed strain data with the 4-component borehole strainmeters at 16 stations around the epicenter.
本文着重从反射波法小应变桩基检测过程中对最终测试结果影响较大的几个方面进行分析。
Inthis paper, we analyzed several problems in the process of measuring small strain stake foundation which influenced the final measure effects.
以平面波发生器为加载源的爆炸测试系统，直接得出爆炸作用下岩石的应变历程曲线。
A blasting measuring system which include plane wave producer was set up to measure the strain time curves of the rock bar under blasting loading.
本文重点针对传统的SHPB实验技术试样中早期应力不平衡和实验中难以达到常应变率加载这两大问题，建立了入射波整形技术。
Because it is hard to obtain dynamic stress equilibrium and constant strain rate in soft materials specimen during the conventional SHPB experiments, a pulse shaping technique is developed.
低应变反射波法作为一种桩身结构完整性检测的基桩动测法，在我国被广泛应用于工程实践中。
As one of the dynamic testing methods for structural integrity of pile shaft, it is widely used in the engineering project in our country.
针对平面应变弹性波动问题，研究了自由-固定边界无限大弹性板中P -SV波的传播特性。
Wave propagation properties for P-SV wave in a free-fixed infinite plate in the state of plane strain problem were investigated.
小应变反射波法是当前在工程桩基检测中应用的动测法之一。
Pulse Echo method (PEM) is a fast, economic and feasible method for Low-strain Dynamic Testing (LDT) of piles.
对于H68黄铜，随着晶粒尺寸的增大，出现锯齿屈服的临界应变量增大，锯齿波的最大应力振幅减小。
With the increase of the grain size of H68 brass, the critical plastic strain for the onset of serrations increases while the maximum stress amplitude of serrations decreases.
试验证明，饱和土属于应变硬化介质，在激波动力加载条件下，土中应力波将保持其激波特征不变。
The tests prove that saturated soils are a kind of strain hardened media and stress wave will maintain shock wave characteristic invariant during shock wave dynamic loading.
本文结合工程搅拌桩体，对低应变反射波法应用于水泥搅拌桩的理论基础、实际应用与可靠性进行了分析。
This paper analyzeds the theory base, practice and reliability through the application of low strain reflection wave method to test cement-soil mixing pile.
包括储液晃动波高，罐壁的应力和应变，底板的提离以及基底弯矩和剪力。初步分析了浮放储液罐的“象足”变形产生原因及破坏机理。
The analysis includes the height of sloshing wave, the stress and the strain of the tank wall, the uplifting of the base plate and the base moment and base shearing force.
然后，以增量方法逐波累计计算残余应变。
Then, the residual strain is calculated by using the incremental method of the cycle-by-cycle accumulation.
用这种解研究桩的扭转波特征，其结论对应用扭转波进行低应变动力测桩有指导意义。
The solution is used to study torsional wave characteristics of the pile. The conclusion will be of guide significance on low strain dynamic testing of pile with torsional wave.
论文主要研究了低应变测桩时应力波在桩中的传播规律。
实验温度为室温，循环应变比和应力比均为0.1，载荷波形为三角波。
The fatigue tests were performed at room temperature and cyclic strain and stress ratio of 0.1 with triangle load wave.
以平面波发生器为加载源的爆炸测试系统，直接得出爆炸作用下岩石的应变历程曲线。
In this paper a blasting measuring system which include plane-wave producer was set up to measure the strain-time curves of the rock bar under blasting loading.
管桩低应变检测时，平截面假定并不满足，应力波的传播不能简单地用一维波动方程描述。
The plane-section assumption was not congruous in low strain dynamic tests on pipe piles, so the propagation of stress wave couldn't be expressed by 1D wave equation.
应用推荐