查询词典 girder

In this article,a simplification of the entire bridge lattice into a "Plate Girder Frame" whose solution can be found by means of the force method is used instead.

在现有计算双梁桥架的内力的方法中，都是将桥式起重机的主梁简化成简支梁来计算的。

After installation of the lattice girder supporting structure the bottom chord structure should be assembled.

格状基架支撑结构安装完成之后，进行底部结构组装。

After the spacer blocks have been placed, the lattice girder substructure is assembled at ground level to frames and then placed on the supporting points.

当垫块已放置好，在地面把格状基架基础结构组装到框架上然后放置于支撑点上。

Directed against stress properties of lining structure of loess highway tunnel, the paper selects three loess highway tunnels as relying engineering according to buried depth and soil properties, and takes field observation synthetically for the first time, which pays more attention to researches on the change regulations of pressure acting on first lining and invert, axial force of lattice girder, contact stress between first and second lining, concrete strain of second lining verse the time and distributions in different positions.

针对黄土公路隧道衬砌结构受力特性，根据埋深和土质情况，选取三座黄土公路隧道为依托工程，首次开展了大规模系统的现场测试，着重研究了一衬和仰拱围岩压力、格栅拱钢筋轴力、一衬和二衬接触应力以及二衬混凝土应变时间变化规律及分布特性。

The observation results reveal the difference between surrounding rock pressures of shallow tunnel calculated by exiting methods and test results is large, pressure figure seems cat ear, surrounding rock pressure of deep tunnel belongs to clastic pressure, the test result is consistent with result by modified KAKE formula, the invert stress properties of shallow tunnel and deep tunnel are different, the axial force of lattice girder is at pressure in majority, and the stress of second lining is relatively small in loess highway tunnel.

实测结果表明：现有浅埋隧道围岩压力公式计算结果与实测结果偏差较大，其分布呈"猫耳朵"形状；深埋隧道围岩压力属形变压力，其实测值与修正卡柯公式计算结果较为一致；深埋与浅埋隧道中仰拱的受力性态有所不同；格栅拱钢筋轴力以受压为主；黄土公路隧道二次衬砌受力相对较小。

The research and observation at different height and different section along longitudinal axis of box girder show that the temperature distribution pattern is the same.

沿桥轴线方向不同位置和不同高度的箱梁混凝土温度的观测和研究结果表明，它们具有一致的温度分布形式。

The paper carries out mechanical analysis of the weight distributing of goods in loading container based on analysis of packing and tansporting environment, and draws the formula of the ratio of the weight of loading goods and the maximum loading weight W/W0, and the length distributing ratio of loading goods α=l/L under the condition that the bending quadrature produced by part load is within the range of the maximum bending quadrature. It also gives the graph that the sum deflection of mudsill and underside girder can reach high-point value with the length of bottom distributing varying, when the loading amounts of container of 20ft and 40ft are given. Furthermore, it provides the relation graph of an eccentric rate of loading goods and the allowed loading amount. For on-site safety loading work, it has certain guidance and reference value.

在分析包装件运输环境的基础上，对装载集装箱的货物重量分布进行了力学分析，得出局部负荷产生的弯矩如在最大容许弯矩范围以内时，装载货物重量与最大载货重量之比W/W0，同装载货物的长度分布率α=l/L的关系式；绘出了20 ft和40 ft集装箱在装货量一定时，随着货物底分布长度的变化，底梁和下侧梁之合计挠度达到极限值的曲线图；绘出了装载货物的偏心率与容许装货重量的关系图；对现场安全装载作业有一定的指导作用和参考价值。

A big wood can be used as a girder, a thin wood can be used as a square rafter, a small wood can be used as a pendentive, a stout wood can be used as a door-hinge pit, and a wedge can be used as a door bar.

大的木材能被同样地用一个桁，瘦的木材能被同样地用一个正直的椽，小的木材能被当作 pendentive 使用，强壮的木材能被当作一个门-铰链深坑使用，而且一片楔子能被当作一扇门使用除之外。

A perspex glass model of a two-span continuous curved box girder was made.

研究表明，曲线箱梁内侧正应力比外侧的大。

You can find out it is the major temporary work, such as formwork, rebar jig, equipment etc. during the FPLM construction, in which the cost of the inner mould and outer form of box girder, the steel form of pier and pierhead of substructure, the rebar jig as well as the launching equipments are quite high. The quantity of those equipments was always depended on experience in the pass time. Therefore the more of the form quantity is used the higher of direct costs would be spent. On the other hand it would be reduced the capacity of production if the equipments are insufficient.

在全跨预铸工法中所使用的生产设备仔细观察可发现，预铸工法中假设工程(如模版、钢筋加工架以及施工机具等)所占比例相当高，其中有箱型梁的内模与外模床、下构的柱钢模、帽梁钢模、钢筋加工架、吊装机具等所占的成本相当高，以往设备数量多寡均以经验来取决，因此假如模版数量过多直接成本随之提升，反观模版资源数量不足时又会造成生产力降低情况发生。

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。