查询词典 bridge deck

Based on the differences between the design value and the survey of the bridge deck elevation in constructing the pre-stressed and so on working condition, the model parameters are identified by ANN, and the beam camber of different sections are given. The results demonstrated that the ANN is efficient and the theoretical results fit well with that of forecasting the beam camber in construction.In this thesis, aim to the beam axis shape be exactitude for design, the internal force of the beam be appeased by design request, the concept of modem cybernetics is applied, At the same time, the effecting parameter has collected. The paper build the ANN model in predicting the beam camber an construction and discuss indetail the extraction of inputting nodes information when quoting the fundamental principle of ANN model and introducing research process of the improved BNN. According to them, ANN is applied in the construction control of prestressed concrete continuous bridge. It is successful for used in the No. 4 bridge of Xiangfan bridge over-crossing Hanriver brideg. To predict the construction camber of by ANN method is useful and effective.

本文以大桥成桥线形满足设计要求和成桥内力控制在设计容许范围内为目的，运用现代控制理论的思想，引用神经网络基本原理，详细介绍BP神经网络的研究过程，从而建立预应力混凝土连续梁桥施工预拱度的神经网络模型，并详细讨论了模型的神经网络结点信息的提取，在工程实例的基础上进行了数值计武汉理工大学硕士学位论文算，数值表明，将神经网络应用于预应力混凝土连续梁桥施工控制，获得了满意的结果，在预应力混凝土连续梁桥施工控制技术研究方面，具有方便有效、精度高的优点，具有良好的应用前景。

Based on this,189 bridgesin the actual projects as a sample were selected,the connection between static test result anddanymic test result was built in this paper in order to assess the structure\'s bearing capacity bydynamic characteristics of bridge.The main contents are as followings:(1)On the base of actual observation records of bridge samples,the mechanicalproperties of the assembly slab bridge is obtained,and the mechanical characteristic ofhinged joint and bridge deck,the distribution of the guard rail in transverse direction are alsodiscussed.Based on the above analysis,the rational theoretical model is built,which offerssome reference to assess the structure\'s bearing capacity.

基于此，本文在实际工程项目中选取189座板桥作为样本，通过对样本桥梁实测静载挠度、应变和动载频率进行统计回归分析，建立桥梁结构动载试验结果与静载试验结果之间的关系，通过桥梁结构动力特性来评定结构承载力，论文主要完成了以下几个方面的工作：(1)以样本桥梁实测数据为基础反演装配式板桥受力特性，确定各种型式装配式板桥的铰缝受力特点、桥面铺装层受力特点以及护栏沿桥面横向分配原则，以此建立真实反映装配式板桥受力特点的理论计算模型，为装配式板桥承载力评定提供理论计算依据。

By applying the sinusoidal wave mode to simulate the rugged surface of bridge deck,accounting for vehicle-bridge interaction and using Euler-Bernoulli beam theory, a coupling vibration model of vehicle-bridge system was developed. The model was solved by mode analyzing method and Runge-Kutta method, and the dynamic response and the resonance curve of the bridge were obtained. It is found that there are two resonance regions, one represents the main resonance while the other the minor resonance, in the reson...

通过用正弦波形模拟桥面的不平和考虑移动车辆-桥梁间的相互作用，在Euler＿Bernoulli梁理论的基础上建立了一种车桥系统的耦合振动模型·利用模态分析法和Runge＿Kutta法对模型进行数值求解，获得了车桥系统耦合振动的动态响应和共振曲线·发现车桥耦合振动的共振曲线中存在两个共振区域，一个反映主共振而另一个反映次共振·讨论了桥面不平、桥梁振型和车辆间的相互作用对系统振动的影响·数值结果表明，这些参数对系统振动的影响很大，桥面不平和振型对车桥系统耦合振动的影响不能忽略，设计车速应该远离临界车速

Where the long bridge deck within 0.5 L amidships is regarded as strength deck, the midship section modulus and minimum thickness of the deck plating comply with the requirements of 2.2.1 and 2.4.2.l of this is Chapter.

例 1：在船中部0.5L区域内的长桥楼甲板作为强力甲板时，其船中剖面模数及最小厚度应满足本章 2.2.1及 2.4.2.1的要求。

4Hands scrapmg and touching up curtain plates O{bridge deck , boat deck and poop deck

水手铲刮和挖补桥甲板、艇甲板和艉楼甲板房室围板。

The finite element method combined with optimization was applied to the structural analysis of the local stability of orthotrupic steel deck plate. The structural analysis of the orthotmpic deck plate was conducted in the equivalent grillage method. The local stability of the orthotiopic deck plate was analyzed with the Japanese bridge specification.

采用有限元法和优化技术相结合的方法同时解决钢桥面板的局部受力问题与局部稳定问题，其中钢桥面板的结构分析采用等效格子梁法，编制了分析程序；钢桥面板的局部稳定计算采用日本规范。

Vehicle-bridge vibration system can be divided into two subsystems at the interface of wheel and bridge, one for the bridge and the other for the vehicle. The vehicle-bridge coupling relationship, including the geometrical compatibility condition and the static equilibrium condition between vehicle and bridge, is established.

将整个车桥系统在车轮和桥梁接触处划分为车辆、桥梁两个子系统，通过车轮和桥梁接触点处位移协调条件和力的平衡条件建立了车-桥系统动力方程。

The different methods for establishing the equations of vehicle-bridge system are summarized and assessed. The vehicle-bridge coupling relationship, including the geometrical compatibility condition and the static equilibrium condition at the interface of wheel/rail, is established. The forces on the vehicles, which coming from bridge deflection and track irregularity, and those on the bridge, which coming from vehicle deflection, are given. Then, the governing equations of vehicle-bridge system are setup.

提出了车桥系统运动方程求解的分离迭代技术和相应的数值解法：对建立车桥系统方程的各种不同方法进行归纳与总结；详细建立了车桥耦合关系，即轮轨接触点处的几何相容条件和静力平衡条件；给出了由于桥梁位移和轨道不平顺而引起的作用在车辆上的轮轨力，以及由于车辆位移引起的作用在桥梁上的轮轨力。

This paper applies a software ANSYS to calculate the bridge of Kazi gulf in three-dimensional entity model, compute the left bridge under the initial and the gravity before gather together, carry on left bridge and the whole bridge'mode analyses, finally analyze the left bridge under artificial seismic waves.

本文应用大型有限元软件ANSYS 对卡子湾大桥三维实体模型进行分析，计算左桥合拢前在预应力和重力组合作用下的应力状况，进行左桥和整桥的模态分析，最后分析左桥在人工地震波作用下的动力时程反应。

Given two bridge-builders, a man and a woman, given a certain bridge to be built, and given as always the unchangeable laws of mechanics in accordance with which this special bridge and all other bridges must be built, it is simply inconceivable that the preliminary instruction given to the two bridge-builders should differ in quantity, quality, or method of presentation because while the bridge is building one will wear knickerbockers and the other a rainy-day skirt.

假定分别有男女两位桥梁建造者，要去建造指定的一座桥，在建造这一独特的桥及其它一般的桥的力学规律总是不变的情况下，简直不可想象，男女建造者所受的基本教育应有所不同；更不可想象，只是因为在施工时，一个穿灯笼裤，另一个穿防雨裙，而必须让他们在质量、数量及教学方法上接受不同的教育。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。