Study on Calculation of Coefficient of Lateral Pressure 'at Rest' According to Loading Test in Site 依据现场载荷试验结果计算静止侧压力系数的探索
The results show that the calculated minimum cushioning coefficient s were almost the same in the case of static and dynamic loading. 结果表明,由静、动态应力应变曲线计算所得的缓冲系数的最小值相差不大。
Tion coefficient of uncertainty of soil bearing capacity 、 calculation mode of lateral resistance and calculation mode of tip resistance of pile, and the variation coefficient of loading has major influence on reliability index. 分析表明:可靠度指标对场地承载力不定性、桩侧摩阻力和桩端阻力计算模式不定性的均值、变异系数均敏感;荷载变异系数对可靠度指标有较大影响。
The results prove that the enlargement of load stiffness and leakage coefficient of loading system and the decrease of motor displacement and the total compressed volume can enhance the response velocity. 结果表明:加载系统负载刚度和泄漏系数的提高,以及马达排量和有效容积的减小都有利于加载系统快速性的提高。
Coefficient of sorting of earth pressure loading conforming to the requirement of reliability is given; problems in earth pressure calculation during excavation by steps are analyzed. 分析了分步开挖时土压力计算中应注意的问题,并分析研究了土性参数的变异性与荷载分项系数对土压力可靠度计算的影响。
The wear rate and friction coefficient of the composite decreased with the increase of loading; 随载荷增加,材料的磨损率及摩擦系数都不断减小;
The non-monotonic compression factors such as compression coefficient ratio a_e/ a_v, load ratio q_l/ q_u, rate of loading and that of unloading, all have significant influence on the consolidation behavior. 压缩系数比ae/av、荷载比ql/qu、加载和卸载速率等非单调压缩因素对地基的固结性状均有明显影响。
The varying law of the loading coefficient for the conic mechanical seal with the seal ring wear and the relationship of the loading coefficient with the back pressure factor and the spring pressure were discussed. 分析了锥面机械密封载荷系数在密封环磨损过程中的变化规律以及载荷系数与液膜反压系数、弹簧比压的关系。
Then, according to the debonding criterion and the Paris formula, the relationship among the interfacial debonding rate, debonding length, coefficient of friction and the number of cyclic loading is obtained. 然后根据断裂脱粘准则,借助描述疲劳裂纹扩展的Paris公式,得到了脱粘界面疲劳裂纹扩展速率、扩展长度以及脱粘界面上摩擦系数与循环加载次数的关系;
And common state of load in engineering application and stress concentration coefficient of the hole-edge were discussed. The discussion topics also involved the arrangement and orientation of fiber, loading form and direction, etc. 对工程应用中常见的几种荷载状况(在不同纤维方向,不同加载形式、加载方向情况下)对孔边应力集中系数的影响进行了探讨。
The experiment on the correlation between coefficient of foundation and size of loading plate is performed on experimental model of planar load test in lab, which can model field situation of roadbed. the resultant of test is compared with theory formulas. 在试验室模拟路基现场的工况,建立平板载荷试验模型,进行了地基系数与载荷板尺寸的相关性试验,并与理论公式进行了对比。
The frictional coefficient of the composites is increased with increasing the SiC particles content, exhibiting sharp increase under heavy loading condition. 复合材料的摩擦因数随SiC含量增加而增大,大载荷下增幅更明显。
The paper defines the unloading elastic coefficient, E ', and the gas permeability coefficient of destressed coal seam, K', based on the triaxial stress state and results of loading and unloading tests with pressurized gas passing through coal samples. 根据三向应力状态、有压瓦斯流过煤试样的荷载-卸载实验结果,定义了卸载弹性系数E′和煤层卸载瓦斯渗透率K′,讨论了卸载过程中煤的弹性能量释放和瓦斯流动问题。
The calculation of circulation coefficient of coal flow during loading 滚筒装煤时煤流循环系数的计算
This paper presents a numerical method called the finite strip plasticity coefficient increment initial stress method for sloving the ultimate load of elastic-plastic stability of steel columns. Step loading and finite strip principle are employed to establish the incremental equilibrium equation of structures. 本文提出了有限条塑性系数增量初应力法,用于分析钢压杆的弹塑性稳定极限承载力.该法采用分级加载,用有限条法建立结构的增量平衡方程;
The viscous coefficient of elastic-viscoplastic solids under shock loading 在冲击载荷下弹&粘塑性固体的粘性系数
It is a test method for determining the friction coefficient, wear extent and failure duty of lube oil under step loading condition on four ball apparatus. 该方法是在四球机逐级加载条件下测定润滑油摩擦系数、磨损量和失效负荷的一种试验方法。
The sludge yield coefficient increased with the increase of sludge loading rates. 污泥表观产率系数随污泥负荷的增加而增大;
The variety of bowknot angle and dissipative angle with viscosity coefficient of pore fluid and cyclic loading frequency is consistent with the results of other experiments. 在同一岩石中蝴蝶结张角和耗散角随孔隙液体黏滞系数和加载频率的变化规律与以往其他实验的结果是一致的。
The creep coefficient and the age adjustment coefficient x can be determined by the test results of reinforced concrete beam under long-term loading. 本文公式同时考虑了砼徐变和收缩的影响,还可用来根据梁的试验结果而确定砼徐变系数和龄期调整系数值。
By introducing the urgent coefficient of customs 'need, the model of freight loading problems considering the PRI of customers' need is established in this paper. 通过引入顾客需求紧急性系数,建立了考虑客户需求优先级的货物配装问题的模型。
The coefficient of consolidation is usually treated as a constant during the loading in the current design of preloading method. 目前的堆载预压工程设计中,通常假定软土的固结系数在加载过程中为常数。
Based on the experimental investigation, the influence coefficient β of steel fiber in steel fiber reinforced concrete subjected local loading is given in this paper. 通过试验研究,给出钢纤维混凝土局部受压时的钢纤维影响系数βl。
A new type of vibration friction-wear test machine has been developed, which can automatically and synchronously measure and record the dynamic friction force ( coefficient of friction) and the resultant pressure of a sample in vibrating and loading condition. 我们研制了一种多用途的振动摩擦磨损试验机。试件在振动与加载同时作用下能自动、同步的测量和记录动态摩擦力(摩擦系数)与合成压力。
The relevent crack width can thus be calculated by preliminary crack width and increasing coefficient of concrete compressive strain after fatigue loading operation N times. 疲劳荷载作用N次后构件的裂缝宽度,可根据初始裂缝宽度和受压区混凝土应变增长系数来计算。
In the evaluation of the structural safety, the assurance coefficient of structure can be received by loading structural models, the endogen force of computation structures, the eccentric compression and the safe criterion. 结构安全性评价,通过荷载结构模型计算结构内力,并根据偏心受压构件的安全判定标准,评价结构的安全系数。
Through the research, the value of the viscosity coefficient under the condition of the different loading shows the nonlinear function of the loaded stress and the elapsing of time. 研究表明:一些岩质材料在各类加载条件下,其粘滞系数值是加载应力大小和加载持续作用时间的非线性函数。
Analysed are the influences of strengthening method and loading sequence on fatigue life. Dealt with are the choice of strengthening coefficient, determination of test spectrum and monitoring of fatigue damage by local stress-strain. The loading methods of random sequence and variable frequency are presented. 分析强化方法、加载次序对疲劳寿命的影响,讨论强化系数的选择、试验谱的确定和用局部应力应变监测疲劳损伤等问题,提出用随机次序加载和变频加载的方法。
Obtain casing reliability computation formula through the research of reliability design method, and further obtain the calculation procedure of casing strength security factor based on reliability we needed and nonuniformity coefficient of casing strength and loading. 通过对可靠性设计方法的研究,得到了套管可靠度计算公式,并进一步获得了根据我们所需可靠度及套管强度和载荷的变差系数计算套管强度设计安全系数的方法。