查询词典 truss

A method for truss damage detection is proposed based on measured frequency response function and principal component analysis.

提出了利用实测频响函数及主元分析进行网架损伤识别的方法。

Therefore an entire geometrical non-linear finite element theory for the structure made of beam, truss and cable elements is established.

磁流变阻尼器克服了现有减震设施存在的橡胶老化、金属锈蚀等问题，具有结构简单、能耗少、出力大、响应速度快等优良特性。

Main body steel structure forms the overall giantism space shape of a saddle steel truss weaving dyadic "bird nest" structure , steel structure always uses steel amounts to be 42,000 tons , mark, concrete bleachers having been , is hit by , three tiers down, bleachers concrete structure is 7 tiers of ground armoured concrete frames- shearing force wall structure system undergroundly 1 tier.

主体钢结构形成整体的巨型空间马鞍形钢桁架编织式"鸟巢"结构，钢结构总用钢量为4.2万吨，混凝土看台分为上、中、下三层，看台混凝土结构为地下1层，地上7层的钢筋混凝土框架-剪力墙结构体系。

As the sun is setting, the nomad housewife brings in a truss of sticks and dry bushes, which she has pulled or hoed with a mattock in the wilderness; she casts down this provision by our hearthside, for the sweet-smelling evening fire.

在黄昏时分，游牧人的妻子就拿来了一堆干草和树枝——这是她用鹤嘴锄（一种他们很少使用的锄头）在野外撅出或是挖出来的；她把这堆东西放到了我们的火塘一侧，夜里点燃时，这些干草就发出了一丝甜甜的气味。

The design and earthquake response of space truss tower as an engineering project lying on the top of a highrise building is analyzed in this paper.

本文结合一工程实例，对位于高层建筑顶部的塔形网架的设计与地震反应进行了分析。

The results analyzing the rtuss as rigid joint or hinge joint in theory are indicated that the tube truss in practice is accordance well with the theoretical calculation as rigid joint or hinge joint ,if axes joint of web members are at center of chord members.

通过对一榀 2 4m跨钢管屋架的静力试验研究及在理论上按刚接、铰接的计算结果分析表明，腹杆轴线交点与弦杆形心重合的管桁架，按刚接或铰接计算与实际受力状态均符合较

The main research contents are stated asfollow: 1. Simplified analysis method of space grids structuresDouble-layer space grids have been assumed as sandwich plate, and are analyzed bythe nontraditional theory of plate with consideration of shear deformation and threegeneralized displacements. Using the theory of energy variation, simplified methodsfor bending, stability and vibration analysis of double-layer space grids have been putforward based upon the idea of split rigidity. The formulas for calculating internalforces, displacements, critical load and natural frequency have been given out. Set thestable cables and bearing cables in hyperbolic paraboloid cable nets are all replaced bytruss-cable to form truss-cable nets structures. Natural vibration analysis method fortruss-cable nets structures has been put forward using the energy variation method andRayleigh method.

主要内容包括： 1、空间网格结构静动力简化分析方法把网架结构简化为夹层板，采用考虑剪切变形的具有三个广义位移的平板弯曲理论进行分析，基于分解刚度思想利用能量变分原理提出了网架结构弯曲、稳定与振动分析的简化计算方法，给出了位移、内力、屈曲临界荷载和固有频率的计算公式；将双曲抛物面索网中的稳定索与承重索均用劲性索代替形成劲性索网结构，基于能量变分法和Rayleigh法给出了劲性索网结构固有振动分析的简化计算公式。

The whole ticket hall is a roofing frame system of hyperbolic variable cross-section steel truss and monolayer steel net shell.

整个出发办票大厅为60米跨双曲变截面空间钢桁架和候机指廊，连廊的无拉杆相贯线单层钢网壳的屋面结构体系。

Aim at the special structure form for the first time used of the long span space truss and cross inhaul cable of the Guangzhou gymnasium light steel roof, supply the theoretical basis for the construction, therefore, improved feasibility and advanced nature of construction scheme greatly, and gained very good economic and social benefit.

5针对广州体育馆大跨度空间桁架+交叉支撑拉索轻型钢结构屋盖这一国内首次使用的结构形式，加之构件几何尺寸细小、刚度小、稳定性差，安装和拆除过程中各工况内力变化复杂且相互影响的技术难题，运用虚拟建造技术对施工方案中八大难题进行仿真分析，为实际施工提供科学的理论依据，大大提高了施工方案的可行性和先进性，取得了很好的经济和社会效益。

It proposed the method of adjustment and optimization of the peripheral truss net surface integrating distance weighted factor and the genetic algorithm based on-orbit thermal environment for the first time, Optimization adjustment simulation of the net surface has been carried based on-orbit thermal environment for the large deployable antenna.The research of thermal analysis technology in this article would provide more scientific foundation for thermal design of antenna on satellite, it would greatly improved thermal design level for satellite antenna of our country, the thermal optimize design which were based on those would effective reduce the costs of test.

本文所完成的热分析技术的研究能够为星载天线的热设计提供更科学的依据，可大大提高我国星载天线热分析的水平，以此为基础的热优化设计可以有效的减少试验费用。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。