查询词典 bridge

The studies on durability of bridge structures including concrete,rustiness of reinforcement steel,loss of pre-stress caused by shrinkage and creep of concrete,fatigue damnification and system durability of bridge structures.

随着高强度预应力钢材的广泛应用，使桥梁结构变得越来越薄，这要求更需注意由于结构的耐久性不足而导致的结构失效。

In this paper, elementary frame of the suspension bridge analysis is obtained which is reference to the suspension bridge construction control and also a foundation of the further study of SBCS.

本文的研究初步形成了悬索桥施工控制计算结构分析系统的框架，为悬索桥的施工控制计算提供了参考，具有工程实用意义，同时为今后悬索桥施工控制分析程序的进一步研制奠定了基础。

The method of control calculation of Suspension bridge and the design of SBCS (Suspension Bridge construction Control analysis System) is mainly analyzed in this paper.

本文主要研究了悬索桥施工控制方法及施工控制分析计算软件SBCS(Suspension Bridge construction Control analysis System)。

In order to study the mechanical behavior of special joint at connection between stiff suspension cable and upper chord of truss beam for stiff suspension reinforced steel truss bridge, a 1:2 scale-down model test and three-dimensional finite element analysis of Dongjiang Bridge's special joint S25 were investigated in order to find the stresses distribution rule and mechanical property of the special joint.

为研究刚性悬索加劲钢桁梁桥刚性悬索与桁梁上弦杆的连接处特殊节点的力学行为，结合东莞市东江大桥，采用1：2的几何缩尺比例，对其特殊节点S25进行了模型试验研究，并进行了详细的空间有限元分析。

Secondly, this paper based on the highway bridge of huanghe in sanmenxia, it educed the method of controlling by flexibility and stress through analysing the reason of some bridge disease. Through all of above ,it set up the model of scathe,so it can be right to analyse the reinforce bearing external presttessing.

其次，结合三门峡黄河公路大桥加固工程，在病害原因分析的基础上，提出了挠度、应力双控拟合方法，以此建立结构加固前的损伤模型，再对其施加体外预应力进行加固结构计算分析。

Firstly, the development and basic theory of CFST arch bridge are introduced briefly. Considering the fact of the Yellow River Bridge, the construction schemes of hanging segmentally by long span and great tonnage cable crane, fixing by inclined cable, once pouring to the arch top symmetrically along the whole rib, are adapted.

简要介绍了钢管混凝土拱桥的发展和基本理论，针对兰州雁盐黄河大桥的实际情况制定了采用大跨、大吨位缆索吊机分段吊装，斜拉扣挂固定，整条拱肋对称一次压注到顶的总体施工方案。

The paper adopts the new type of structure of box ribbed arch bridge with 120m clear span and its calculating results which provide reference for design of simular bridge .

介绍采用新规范设计净跨径120m箱型肋拱桥的结构和计算结果，以便为采用新规范设计同类桥梁提供参考。

Through the assimilating and analyzing the construction materials and the design of reinforced concrete arch bridges with long span from both domestic and abroad, the thesis studies the effect of the arch axis geometry, rise-span ratio, arch ring section and spandrel structures, as well as the ultimate bearing capacity and stability of the entire bridge on the design of reinforced concrete arch bridge. In addition, in consideration of construction, the thesis also studies the applicability of different construction methods such as cable crane system, stiffened skeleton system, swing construction system and cantilever construction system and correspoindingly economica spans and their applications of the reinforced concrete arch bridges.

本论文通过对国内外大跨径钢筋混凝土拱桥的设计、施工资料的收集及其出现问题的分析，从设计角度研究了拱轴线形、矢跨比、拱圈截面及拱上构造、全桥极限承载能力及稳定性对钢筋混凝土拱桥设计的影响；从施工角度研究了缆索吊装法、劲性骨架法、转体施工法、悬臂施工法等不同施工方法的钢筋混凝土拱桥的经济适用跨径及其适用条件。

Analysing the changing discipline, it obtains some characteristics of load transverse distribution of skew girder bridge. It has some certain reference value to the research and design of the skew girder bridge.

通过对荷载横向分布变化规律的分析，得到了斜梁桥荷载横向分布的一些特点，这对斜梁桥的研究和设计有一定的参考价值。

To solve these problems, assembled skew girder bridge has been simulated used general finite element software ANSYS. Through computation and analysis, the paper discusses the effects of different skew angle and span on load transverse distribution of skew girder bridge, and obtains the changing discipline of the automobile load transverse distribution in different situation.

针对这些问题，本文借助于通用有限元软件ANSYS，对装配式斜梁桥进行模拟，通过计算分析，对在不同跨度和斜度影响下的斜梁桥荷载横向分布进行探讨，并得到了不同情况下汽车荷载横向分布变化规律。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。