查询词典 beams

With the theory of energy random analysis of train derailment, the security of moving train on up line and down line of Laoluanhe bridges is analyzed contrastively, and the influence on improving resisting derailment ability of bridges by widening the distance between two main beams of the deck steel plate girder bridge is studied.

进一步运用列车脱轨能量随机分析理论，对比分析了老滦河桥上、下行线上的列车走行安全性，分析了增大钢板梁主梁中心距对提高桥梁抗脱轨能力的影响。

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。

Deck plating inside accommodation shall be stiffened by transverse beams at each frame and supported by longitudinal girders in suitable intervals to avoid vibrations.

住所甲板内部结构应该在各自肋位处用加强横梁加强，在适当的间隔处用纵向梁支撑以防止震动。

In addition, the amended calculating method of deflection of the composite beams with profiled sheeting is advised in this paper based on study on the calculating methods in existence.

同时本文对现有的关于钢—压型钢板混凝土组合梁挠度的计算方法进行了探讨，并给出了建议的修正计算公式。

Based on the nonlinear FEM analysis and experiment verification, the calculation method for deflection of concrete beams reinforced with FRP rebars is studied.

本文基于本课题组与国外已有试验研究，根据纤维塑料筋混凝土梁的非线性有限元分析与试验结果的验证，对纤维塑料筋混凝土梁挠度的计算方法进行了较系统的研究。

Based on the research progress abroad,calculation method of deflection due to short-term loads and calculation expression of effective moment of inertia for concrete beams reinforced with FRP bars were brought forward.

在国外有关成果的基础上，给出了FRP筋混凝土梁的挠度计算建议方法及&有效惯性矩&的表达式，同时提出了设计时不需进行挠度验算的最大跨高比限值的计算公式及相应的基于挠度控制的承载力设计方法，对工程应用有着实际的指导作用。

As the economic index of the ordinary long span solid abdomen type portal rigid frame will drop along with the span increasing, a new type of way is presented in this paper, which is fixing up horizontal prestressed cables at the joints between beams and columns.

本文针对普通大跨度实腹式门式刚架随着跨度的增大经济性指标下降的问题，采取另一种方法，在门式刚架的梁柱连接处布置水平预应力拉索。

A new type of semi-connected edge joint with core steel tube which connects concrete filled steel tubularcolumn with RC beams was proposed.

引言一种用芯钢管连接的不连通钢管混凝土柱的节点形式[1-3]，用于钢管混凝土柱与钢筋混凝土梁的连接节点。

For beams employed in any span between supports there shall be no splice in the middle one-fourth of the span nor in the one-eighth of the span nearest any support, nor closer than 1200 mm to the edge of any support/joint, as applicable.

在任何支撑点的跨距内使用的梁，在跨距中间的四分之一位置上，不得有拼接口，在靠近支撑的八分之一跨距位置上，不得有拼接口。在应用上，接口与支撑/接头边缘的距离不得小于

From above analyses,the main contents of this dissertation is the theoreticalstudy of aberrated Gaussian beams both co-axis and off-axis the optical systems.

鉴于以上分析，本论文的主要任务便是与精密激光光学天线及其类似的激光光学系统设计密切相关的高斯光束像差理论研究，并考虑了同轴和离轴两种情况。

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。