查询词典 tubular girder

In this paper, the vehicle model on a scale of 1/4 and the half-sine curve are used to simulate the longitudinal curve of the plate girder bridge deck with creeping camber and the mathematical relations between the vehicle vertical vibration response and creeping camber, span length and vehicle traveling speed of the bridge are derived.

采用1/4汽车模型和半正弦曲线模拟板梁徐变上拱桥面线形，推导车辆竖向振动响应与板梁徐变上拱度、桥梁跨径、行车速度之间的数学关系。

In the case of in-plate loads, such as those induced in the deck by longitudinal bending of the hull girder, the beams serve to maintain the deck plating in its designed shape.

在板材装载情况下，例如在甲板上那些由纵向弯曲船体纵桁所诱导的，梁架就用来维持甲板板设计的形状。

The cantilever erection method with derrick crane provides a new way for design and construction of long-span suspension bridge with steel stiffening truss girder in the western area of China.

桥面吊机悬臂拼装方案为我国西部地区大跨钢桁加劲梁悬索桥的设计和施工提供了1种新的方法。

PATRAN finite element model, and rigidity girder element was connected with down-lead.

MSC.PATRAN有限元模型将加速度计和电阻基体简化为点单元，并将刚性梁单元与引线相连。

Via the sample of erecting a steel girder bridge of 62.8 m span by float tow , the article summarizes the main technique point of the method of assembling tow boat, the process of float dragging beam, the setting up scaffold, disposal of tow and stepping equipment , calculation of float dragging stability, the fastening of hang up pole E3A3 etc, also make suggestion on the dragging equipment selection, the selection of float dragging support point and so on.

通过对跨度为62 8m钢桁梁浮拖架设的尝试，对浮拖架设中的浮拖船结构和组装、浮拖法施工步骤、膺架搭设、牵引和走行设备布置、浮拖稳定性检算、挂杆E3A3加固等主要技术环节进行了总结，并对牵引设备的选用、浮拖支承点位置选择等有关方面提出建议。

Strengthened steel girder,plus high precision linear guide makes every drop of lik onto the right position and brings high resolution..

增强型钢梁，高精度直线导轨确保每一个墨滴准确到位，有效保证打印精度。

A numerical study on the performance of a hemispherical head antiship missile penetrating the plate girder structure is presented using LS-DYNA program.

为了使得船体外板在质量一定的情况下最大限度地降低导弹穿甲后剩余速度以达到保护其内部结构的目的，采用较轻的装甲结构形式或复合材料是目前的发展方向。

The cross girder center segments of the bents were field bolted.

构架横梁的中间段在工地用螺栓连接。

Temperature variation exerts great influence on the bridge alignment during the long-span prestressed concrete continuos girder bridge construction.

在大跨度预应力混凝土连续梁桥的施工过程中，温度变化对桥梁结构的线形有较大的影响。

Then, safety analysis method was constituted considered the typical damage of concrete beam bridge. 5. By amending the reduction rate of loading capacity used in Code for Maintenance of Highway Bridges and Culvers (JTG H11-2004), a new reliable index is presented in the same safety standard to reflect the relation between load and resistance. According to the basic principal of calibration method, the recommended gradation index was computed under various factors such as different load combinations, vehicle operating status and different failure modes. With these calculated numerical values, the calculated reliability indexes standard for the estimation of safety degree of in-service concrete girder bridge members was ultimately obtained.6. Based on the related standards and results on crack and displacement that cannot continue to loading at home and abroad, the evaluation grade of the concrete beam bridge is proposed by analogy.

针对材料和构件损伤对混凝土梁式桥抗力的影响，基于材料和构件层次典型损伤的修正计算公式，在结构既有以及时变抗力评估的概率模型基础上，通过误差传递公式获得抗力统计参数，对抗力进行修正，构成了考虑混凝土梁式桥典型损伤的安全性分析方法。5、依据校准法原理，将《公路桥涵养护规范》(JTG H11-2004)中不同类别承载力下降率转化为修改分项系数，分别计算了轴心受压、轴心受拉、受弯、大偏心受压、受剪构件在各种情况下的可靠指标，根据破坏类型对校准结果进行分析，提出了基于可靠度的公路混凝土梁式桥安全性评定等级。6、基于不能继续承载的裂缝和位移的相关国内外规范和研究成果分析，通过类比提出了混凝土梁式桥不能继续承载的裂缝和位移评定等级界限。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。