| 1. | Dynamical load test used in bridge test and evaluation 动力荷载试验在桥梁检测评估中的应用 |
| 2. | Dynamical load test of a concrete filled steel tubular arch bridge 钢管混凝土系杆拱桥动荷载试验 |
| 3. | Dynamical load test of a concrete - filled steel tubular arch bridge 钢管混凝土系杆拱桥动荷载试验 |
| 4. | Analysis on dead load and dynamical load test on third bridge of yiyang zijiang river 益阳资江三桥静动力荷载试验分析 |
| 5. | At the same time , the character of dynamical parameter under dynamical loads was taken into accout , so elastic eular - bernonulli foundation beam model under traffic loads was set up . in this model , firstly , the detailed resolution process accounting the parameters changing with the space was gained ; secondly , the detailed resolution process accounting the parameters changing with the time was gained , too 同时,建立了考虑管-土系统参数在动力下存在动态变化特点的交通荷载下管道的eular - bernoulli地基梁受力模型,分别对参数随着空间和空间变化时的位移响应提出了详细的解析求解过程,从而保证了管土系统在动力下参数随时空动态变化条件下解析求解方法的科学性与完备性。 |
| 6. | So the chanmical properties and the effect of the timbering form , foundation modulus and stiffen coefficient of the pipelines under static loads were studied , which provided the research basic for the chanmical properties of the pipelines under dynamical loads . the mutual effect of the pipelines and the soil under the dynamical loads is belonging to a coupling system 管道与土体在动力下的相互作用是一个耦合系统问题,本文从荷载、土体、管-土整体三个方面深入探讨了动力荷载下管-土耦合系统的基本特征:随机性、动态变化性、耦合性、非线性等。 |
| 7. | So the integrality of the analytical resolution was preserved in term of the single parameter and the multi - parameters when the pipelines - soil system ' s parameters change with the space and time under dynamical loads . continuous multi - segment beam model is the other method of the common used model on the study of the pipelines . during the sixth chapter , such simplified model was adapted for the pipelines under dynamical traffic loads 文中还将受交通荷载作用下的管道简化为多跨连续梁受力模型进行研究,应用结构力学方法分析了简谐交通荷载下管道受力响应的特征;并考虑参数变化的随机性,采用了摄动理论对管-土参变系统进行了其响应的概率特征描述,提出了简便的分析方法。 |
| 8. | The essential properties like randomicity ; dynamic ; coupling ; nonlinear and so on of the system of pipelines - soil under dynamical loads was studied through loads , soil , and pipelines - soil etc three aspects , so this chapter offers the basic job for the dynamical response of the pipelines - soil system . eular - bernonulli beam model and tomosimko beam model were adapted to study the inherence vibration properties of the pipelines under dynamical loads , and the analytical answers of the chanmical results were brought out in the fifth chapter 荷载的作用,最终要通过土体介质的传递到达管道本身,从而使得管道发生力学性状响应,因此,文中以粘弹性理论为基础,通过数学变换、推导,提出了荷载在土体中的传播特性和计算方法,使得管道的动力激励部分问题得解。 |