查询词典 tubular girder

The article is based on the 6m-span girder bridge in the Country Road 312, using ANSYS to analyze the model of no bearing and simple-supported plate girder bridge, which with width-span ratio of 2 and continuous deck.

以国道312线跨径6m的板梁为例，用ANSYS对宽跨比为2且桥面连续的无支座简支板梁桥进行模态分析。

The results of these analysis show that the initial stress of steel stiffened girder has a significant impact on maximum vertical displacement, maximum tensile stress of pavement surface and maximum shear stress of binding course; the deformation of steel stiffened girder has a significant impact on shear stress of binding course; heavy-vehicle load can increase each control index rapidly; the horizontal force of vehicle load has a significant impact on longitudinal tensile stress of pavement surface and longitudinal shear stress of binding course.

分析结果表明钢加劲梁初始应力对铺装层表面最大竖向位移、铺装层表面最大拉应力与粘结层最大剪应力均有显著影响；钢加劲梁变形对粘结层剪应力影响显著；重车荷载将使各控制指标均急剧增加；车辆荷载的水平力则对铺装层表面纵向拉应力与粘结层纵向剪应力影响显著。

First, this paper presents three girders model with double cable planes which main girder and side girder is connected by rigid arms, analyzes the dynamic characteristic of Yonghe cable-stayed bridge and obtains its natural vibration modes (i.e., frequency, damping values and the mode shapes ) by ANLSIS structural analysis program and uses these parameters as dynamic dactylogram of the intact case of cable-stayed bridge. Using the passage of random as the ambient vibration ,the dynamic properties of Yonghe Bridge is measured and the modal parameter of its 15 years after is identified and used as dynamic dactylogram of the damaged case. By the finite element analysis and locale vibration test, damaged and undamaged modal parameter is analyzed and curvature mode shape, which is sensitive to damage state, is introduced as possible candidate for identifying and locating damage in the cable-stayed bridge. Selecting the branch of part measured point from modal parameter, this paper deduces the damaged index which can detect the possible damaged location of the cable-stayed bridge deck and identifies the damaged region and degree for Yonghe Bridge. For the purpose of structural condition monitoring in in-situ , from another viewpoint, this paper introduces the method called the best optimization vector to detect damaged location and degree. The accuracy and reliability of the method presented in this paper are demonstrated by static analysis and test and the healthy state of Yonghe Bridge can be evaluated.

建立了双索面通过刚臂与主梁及边梁相连的三梁式力学模型，采用ANSYS结构分析程序对永和斜拉桥进行动力分析，对其振动模态参数进行识别，以此作为斜拉桥完好状态下的动力&指纹&；采用自由交通流作为环境振源，对永和斜拉桥动力特性进行测试，识别出永和斜拉桥使用15年后的模态参数，确立了破损状态下的动力&指纹&；利用有限元分析、现场振动测试，对破损前后的模态参数进行分析，提取对破损状况较敏感的模态曲率作为斜拉桥破损诊断的参数；并从模态参数中选取部分点的分量，导出可以指示斜拉桥桥面大概损伤位置的Index损伤指标，识别出斜拉桥发生破损的区段及破损程度；考虑大型斜拉桥在线监测要求识别破损的具体位置，从另一角度提出采用最优矢量法具体确定破损发生的位置及程度；为验证本文研究成果，对永和斜拉桥进行静力分析及静力测试，对其健康状况提出可靠的评价。

In recent years many prestressed concrete highway bridges in different types have been built in this country, such as simple supported girder bridges, balanced cantilever T-frame bridges, continuous girder bridges, continuous rigid frame bridges, cable-stayed bridges and composite arch bridges.

近几年来，我国建造了多座预应力混凝土桥，结构型式有简支梁、T型刚构、连连梁、连续刚构、斜拉桥与组合式拱桥等。在每种桥型中，选择具有代表性的桥梁，对其结构特点，设计与施工新技术，加以分析讨论。

In view of the requirement of double-line concrete girder transport and overlaying for domestic passenger dedicated line, TLC900 girder transport vehicle has been researched and developed.

针对国内铁路客运专线双线混凝土箱梁运输和架设的需要，研制TLC900型运梁车。

The pylon of a cable-stayed bridge without backstays acts as a cantilever beam to resist loads from the girder transferred by stay cables, therefore, the pylon shaft is made incline to form a kind of equilibrium system of girder-pylon structure.

无背索斜拉桥结构主塔作为悬臂梁来抵挡斜拉索传递的梁面荷载，因此将塔身倾斜组成了梁塔结构的平衡体系。

By comparing their consumptions of materials and deflexions, a suggestion that better effect can be achieved by enhacing its girder height and lessening its webs thickness for long span continuous through girder is presented.

至于连续梁桥，由于其边跨对中间跨的弯矩可起卸载作用，中间支点截面有负弯矩，使梁内所受弯矩沿梁长分布比较均匀，因而有利于充分利用支点附近的梁截面和梁内的预应力筋；此外，由于其桥跨在桥墩上连续，致使变形曲线匀顺，因而对高速行车有利。

The tensile stress at flange plate of new girder is 2.67 MPa under creep effect aroused by shrinkage stress and self-weight stress of new girder in 3 a, which may lead to concrete crack.

在新梁混凝土的收缩应力和新梁自重应力的徐变作用下，3a后新梁翼板的拉应力为2.67MPa，可能会引起混凝土开裂。

This paper gives an account of the construction schemes for superstructure of the main bridge of Wuhan Tianxingzhou Changjiang River Rail-cum-Road Bridge,including various techniques having been applied to the pylon construction,steel girder erection,stay cable and deck slab installation,and pylon and steel girder parallel construction.

介绍武汉天兴洲公铁两用长江大桥主桥上部结构施工方案，包括主塔施工、钢梁架设、斜拉索安装、桥面板安装以及塔梁同步施工技术。

Compiled procedure based on the overall geometric dimensions and load parameter of DXZ32/900 downward-borne self-propelled mobile framework template and concrete girder with the secondary development tool APDL of ANSYS, achieved the aim of generating finite element model and imposing load of the template and concrete girder automatically,finally,calculated the counterforce of the outer-mould and rod.

利用ANSYS二次开发工具APDL，依据DXZ32/900下承自行式移动模架模板及混凝土梁整体的几何尺寸和荷载参数编写程序，实现了模板和混凝土梁有限元模型的自动生成、荷载的自动施加，并得出外模及撑杆的支反力。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"