查询词典 major bridge

The dynamic equations were derived for the vehicle-bridge coupled system with an axial force of bridge based on D Alembert's principle and the assumed mode method. The numerical results were obtained by Newmark-β method. Dynamic responses of the system caused by axial forces of bridge and speed of vehicle were discussed respectively.

应用达朗贝尔原理和振型分解法，建立了在桥梁轴向力作用下车-桥系统的动力学方程，利用Newmark-β方法，对车桥耦合问题进行数值求解，比较分析了桥梁轴向力、车速等对系统动力学响应的影响。

First, theoretical analysis methods were used for the static analysis of the suspension bridge. The formulas for endogen force of the asymmetry suspension bridge through elastic theory were deduced and they were contrasted with those of the normal suspension bridge. The basic differential equation of deflection theory was deduced and the method of getting the roots of the equation was offered, and some simplified methods for deflection theory were presented.

推导了非对称式悬索桥弹性理论的内力计算公式，并对比了其与对称式悬索桥弹性理论的内力计算公式的异同；推导了非对称式悬索桥挠度理论的基本微分方程，并且给出了部分均布荷载作用下基本微分方程的试算方法；提出了挠度理论的几种简化计算方法。

The main works are as follows: 1 The developingt history of the traffic load on bridges is represented. Typical bridge codes in some countries are discussed and these traffic load models are comparative analyzed. Analysis shows that the influence of layout axle for the total traffic load effect on bridge gradually becomes smaller with the increase of bridge span. So most national norms use the distributed load as the equipollent load of traffic load.

主要内容包括下面几个方面： 1阐述了桥梁汽车荷载发展的简史，讨论了部分国家典型的桥梁汽车荷载设计规范，并对这些荷载模型进行了对比分析，分析表明随着桥跨的增大，车轴布置对桥梁整体荷载效应的影响逐渐变小，因而大部分国家的规范都把均布荷载作为车辆的等代荷载。

S regards the light floating bridge for Xinfeng River Bridge construction, the drum-shape pontoons of the bridge rolled with steel plates are used as the principal carrying system that takes advantage of water buoyancy.

bstract 新丰江特大桥轻型浮桥采用钢板卷制成圆桶状的浮鼓，利用水浮力形成主要承重系统，并在其上铺设槽钢和钢板护栏等，形成桥面通行系统，介绍该桥的设计与施工工艺。

The present situation in flood-control and waterlog-drain are analyzed, and the present problems are pointed out.2 The causes and characteristics of the floods in Linyi are summarized, and the flood-control project and the waterlog-drain system in Linyi are also introduced.3 On the basis of summarizing the reconnaissance data of engineering geology, the engineering geology conditions of flood-control projects in the city of Linyi are studied, including the floodway project ,the hinge project, the Ge-Jiu Road Bridge project, the No.327 national highway road bridge project, the E-Huang Road Bridge project, and the Xiaogezhuang's chief inverted siphon project in the project of "Bifurcating the Su River to the Beng River".4 Seepage FEM analyses are carried out on the flood-control projects of Yi River, Beng River and Xiaosu River, respectively.

总结了临沂市洪灾成因及洪水特性，介绍了临沂市城市防洪工程和排涝工程。 3、在综合工程地质勘察资料基础上，分析了临沂市城市防洪工程的工程地质条件，包括："分涑入祊"分洪道工程地质条件分析、"分涑入祊"枢纽工程地质条件分析、"分涑入祊"葛九公路桥工程地质条件分析、"分涑入祊"327国道公路桥工程地质条件分析、"分涑入祊"鹅黄公路桥工程地质条件分析、"分涑入祊"小葛庄总干倒虹吸工程地质条件分析。

To the wall with construction materials, articles posted above, on handrails and electrical shutter doors, Yao Wang Taiwan, by product description 9 with wooden dam, looked like the look of cement, from the ground to the top of the dam is within the white walls, projectors, DVD, audio equipment 10 fence, the laying of real grass, small stone embellishment, flower basket fence, equipped with VAG stress management system entities pipeline 11 Steel Bridge, the need to open the door into the car, you can remove the bridge, waterfall in the lateral bridge, and a straight line, the ground when the tunnel plate, the plate Below are the sink, sink, a ring-shaped water system 12 the ship has three sails, fixed line connections, at the top of a volume system, laying the ground mosaic, surrounded by lamps.

用建筑材料做墙，上面贴写真，有扶手下去，又电动卷帘门，有遥望台，有产品图文说明 9）大坝用木制，看上去像水泥的样子，从地面到顶部，大坝内是白色墙面，有投影仪，DVD，音响设备 10）围栏内铺设真草皮，小石头点缀，栅栏花篮，安装有VAG压力管理系统的实体管线 11）钢结构桥，需要开门进车时，可以把桥整体移走，瀑布在桥的外侧，直线而下，地面时洞洞钢板，钢板下面是水槽，水槽内有水形环系统 12）船上有三个帆，同轴连接固定，顶部有卷收系统，地面铺设马赛克，周围有地灯。

According to theory analysis and example computation, the following conclusions are obtained.1. During the analysis on the cable shape in the suspension bridge"s completion state, the pre-displacement of saddle and the case that the cable and stiff girder commonly bear the second-stage dead load should be considered.2. When supposing the construction ideal initial state in the first time, if the initial state model is established according the cable"s span central sag in the bridge"s completion state, and the reasonable correction formulation is created in the iteration process, the result can converges fast.3. The cable shape in the bridge"s completion state is not parabolic, nor catenary. It is between parabola and catenary. Actually it is funicular polygon closer to the catenary.

通过理论分析和实例的计算表明：1在悬索桥主缆成桥线形分析过程中，须考虑主塔鞍座的偏位以及二期恒载由主缆和加劲梁共同承担的实际情况；2在第一次假设施工理想初态时，以成桥状态已知的主缆跨中垂度建立施工理想初态模型，同时在迭代计算的过程中，建立合理的修正公式，才能使收敛的速度快：3在成桥状态时主缆的线形既不是抛物线，也不是悬链线，而是介于抛物线与悬链线之间，更接近于悬链线的索多边形。

Elaborate systematically the contents of the bridge structure valuation、general method and classification,base on absorbing to have already results in basically thought of foundation,combine the research result of the domestic and international bridge valuation,build up the structure and the mode of the Chongqing Jiahua bridge with layer analysis method and misty comprehensive evaluation.

在吸收和采用已有成果的基本思想的基础上，结合国内外桥梁评估领域和其他相关领域的研究成果，建立了以层次分析法结合变权综合原理为基础，通过模糊综合评价及阈值评价方法构建重庆嘉华大桥的状态评估的架构与模式。

Meet the dragon bridge male haleness the United States among them, its river old county ruins neighborhood of fairy laurel the bridge is similar, all is have no syrup stem carve of single arch stone bridge.

其中遇龙桥雄健壮美，它河旧县遗址附近的仙桂桥一样，都是无浆干砌的单拱石桥。

Tianjin Bridge is a very long bridge, Luoyang in days will be bright, each will see long bridge Tianjin hanging a moon-Tianjin Xiao

天津桥是一座很长的浮桥，洛阳人在天将要亮的时候，外出就会看到长长的天津桥上悬挂着一轮明月－天津晓月

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。