查询词典 bridge construction

The mechanical behavior of Shape Memory Alloys material is tested, and the constitutive model of the SMA is established. A kind of SMA combined rubber isolator is developed, and the isolation effect of the SMA combined rubber isolator for long-span bridge and tall building structures is numerically simulated, from which the adaptive isolation performance and the self-restoring capacity of the SMA combined rubber isolator are verified. A kind of SMA damper is developed, the mechanical behavior of the SMA damper is tested, and the model of restoring force of the SMA damper is established. The theory and method of adaptive control based on the SMA damper for the long-span bridge are built, and the effectiveness and reliability of the adaptive control for the long-span bridge using the SMA damper are verified through numerical simulation and model test. The MRF-04K type magnetorheological damper is developed, the mechanical behavior of the MR damper is tested, and the model of restoring force of the MR damper is established. The theory and method of adaptive control based on the MR damper for the long-span bridge and tall building structures are built, and the effectiveness and reliability of the adaptive control for the long-span bridge and tall building structures using the MR damper are verified through numerical simulation and model test. In addition, the theory and method of sub-structural damage identification for long-span bridge are derived, the influence of soil-structure dynamic interaction on the seismic isolation and control effects with different isolation and control measures and the damage responses and the sliding base-isolation of large structures under the excitation of underground explosion are investigated.

试验研究了形状记忆合金材料的力学性能，建立了SMA材料的本构模型；研制了一种SMA复合橡胶隔震支座，数值仿真分析了应用SMA复合橡胶支座的大跨桥梁和高层建筑结构的隔震效果，从而验证了SMA复合橡胶支座的自适应隔震性能及其震后自恢复能力；研制了一种SMA阻尼器，试验研究了SMA阻尼器的力学性能，建立了SMA阻尼器的恢复力模型，建立了基于SMA阻尼器的大跨桥梁结构自适应控制理论与方法，通过数值仿真与模型试验验证了大跨桥梁结构SMA阻尼器自适应控制的有效性与可靠性；研制了一种MRF-04K型磁流变阻尼器，试验研究了MR阻尼器的力学性能，建立了MR阻尼器的恢复力模型，建立了基于MR阻尼器的大跨桥梁和高层建筑结构的自适应控制理论与方法，通过数值仿真和模型试验验证了大跨桥梁和高层建筑结构MR阻尼器自适应控制的有效性与可靠性；还建立了大跨桥梁结构的子结构损伤识别的理论与方法，研究了土-结构动力相互作用对不同隔震和控制措施的减震控制效果的影响以及地下爆炸波作用下各类大型结构的灾害响应与滑移隔震。

Lo Wu Bridge is not only a narrow bridge at the time, only moving train, but no bridge unroofed shed, left to sun and rain. In 1959, the government will be the Lo Wu Bridge turned into steel and concrete bridge deck has also widened more than doubled. 1962, also stamped with an iron Peng Ding, added in the iron bridge on both sides of the iron railing, and covered the sidewalk. The 20th century, the early 70s, the author in Guangzhou Railway Administration to do secretarial work, on several occasions to the Footbridge is the first walk.

当时的罗湖桥不但桥面狭窄，只能行驶火车，而且桥身无顶无棚，任凭雨淋日晒。1959年，人民政府将罗湖桥改建成钢筋水泥桥，桥面也加宽了一倍多。1962年又加盖了铁皮篷顶，在铁桥两侧增设了铁栏杆，并铺上了人行道。20世纪70年代初，笔者在广州铁路局做秘书工作，曾多次到罗湖桥头漫步。

Based on rail/wheel reaction and track/bride reaction theory and systems engineering theory, new vehicle-track and vehicle-track-bridge system dynamic models are established and discussed in details, including ballast track model and ballastless track model. The characteristics of the models are:(1) vehicle-track and vehicle-track-bridge system dynamic models are coupled in vertical and lateral;(2) track vibration on bridge is taken in account, track on bridge is considered as one or two layer continuous-point supported rail model, according to actual track structure, interaction between vehicle and bridge transfer from track structure;(3) three type of ballastless track models (tieembanked, elastic-tie-block, slab track) are presented;(4) models reflect the main feature of actual vehicle, track and bridge structure, the response computation frequency of models is relatively broad, which can be applied to analyze both low frequency and high frequency vibration.

基于轮轨相互作用和线桥相互作用特点，本文从系统工程角度出发建立了车辆、有碴轨道和无碴轨道、简支箱梁桥垂向和横向耦合系统动力分析模型，该系统模型具有以下特点：（1）车线、车线桥体系均考虑为垂向、横向耦合振动系统，车线间通过轮轨接触几何关系耦合，轨道与桥梁间通过轨道与梁体间的力与位移协调条件耦合；（2）充分考虑桥上线路在车线桥系统中参振作用，根据桥上线路轨道结构特点将桥上轨道结构模型具体化，即对桥上轨道结构视为多层支承体系，车桥间的动力作用通过轨道结构来传递；（3）建立了三种形式无碴轨道动力分析模型，即长轨枕埋入式、弹性支承块式和轨道板式无碴轨道模型；（4）系统模型详细，分析频带宽，适用范围较广。

In the interim governance new river dug river 3.3 kilometres, the new zoo at the locks, new long river bridge, forklifts official, Beijing kits Railway Bridge, Highways and Bridges Academy, timber building bridges, small East Village West Bridge, the small East Village Bridge, MTR Cheliangduan, xinjiekou Main Street Bridge, North riparian communities a total of 11 blocks across the bridge, one Block secret scheme, two blocks ran Jiezhizha 2 Block Terminal 1 Block, fill water gates, the original half-buried in the ground with heavy river finally light.

在此次治理中转河新挖河道3.3公里，新建动物园船闸一座、新建长河桥、叉车厂桥、京包铁路桥、学院路桥、木材大厦桥、东小村西桥、东小村东桥、地铁车辆段、新街口大街桥、北滨河路桥共11座跨河桥，1座暗涵，2座暗沟节制闸，2座码头，1座补水闸，原来被埋在地下的一半转河终于重见了天日。

This thesis is based on crane dynamic theory and finite element theory, and utilized software platform of ANSYS. It realizes model analysis and transient analysis of steel rope and bridge structure. The data and conclusion offered effective method to bridge crane design. The thesis mainly includes:According to crane dynamic theory, established relevant dynamic model, and analyzed the dynamic properties of the bridge structure of the bridge crane, including the natural frequency, the model shape and the dynamic stress. A way to analyse the dynamic response of the bridge structure of the bridge crane which takes into account the dynamic properties of the steel rope pulley block has been explored successfully.

本文基于有限元理论和起重机动力学理论，以有限元分析软件ANSYS为平台，实现了计算机对钢丝绳系统和桥架的模态分析和瞬态动力学分析，得到的分析数据和结论对桥式起重机动态设计提供了有效的手段，论文主要内容包括：根据起重机动力学理论，建立了相关动力学模型，并对桥架结构进行动态性能分析(包括固有频率、振型以及动应力)的分析，探索出一种考虑钢丝绳滑轮组的动态特性在内的桥式起重机桥架结构动态应力分析的方法。

Advanced construction technology and the capacity of general contractor Yajisha Bridge Ping vertical swivel General Xinguang bridge construction technology for upgrading the technology of hydraulic synchronization Balinghe Bridge Mobile slipform construction technology company at technology and equipment, management capabilities, are a modern highway construction general contracting capabilities.

先进施工技术与总承包能力丫髻沙大桥平竖综合转体施工技术新光大桥液压同步提升技术坝陵河大桥移动滑模施工技术公司在技术力量和设备、管理能力上，都具备了现代化高速公路施工总承包的能力。

This thesis firstly elaborates on researches at home and abroad on factors affecting the development of the construction industry, defines the contents of the construction industry, introduces its function and expounds the impact mechanism of various factors affecting the construction industry. Secondly, this thesis carries on a brief analysis on the current situation of development in Anhui construction industry to reflect its achievements and shortage since the beginning of reform and opening up, and makes a comparative analysis and comprehensive evaluation on the regional development level of Anhui construction industry through the method of Factor Analysis. Thirdly, this thesis tries to calculate the contribution rate of technical progress, labor and capital in economic growth of Anhui construction industry with the method of linear regression, empirically analyze the external factors affecting the development of Anhui construction industry by means of co-integration and granger causality test, and predict the development of Anhui construction industry by using the method of principal components regression.

本文首先对国内外有关建筑业发展影响因素的研究现状进行详细论述，界定建筑业的内涵和介绍建筑业的作用，研究各因素对建筑业发展的影响机理；其次，对安徽建筑业发展现状作了概括性的分析，以反映改革开放以来安徽建筑业取得的成绩和存在的不足，并运用因子分析法对安徽建筑业区域发展水平作了比较分析和综合评价；再次，运用线性回归法测算出安徽建筑业经济增长中的技术进步贡献率、劳动贡献率和资本贡献率，然后运用协整和Granger因果检验方法实证分析安徽建筑业发展的外部影响因素，运用主成分回归方法对安徽建筑业发展作了精度较高的预测。

The author of this article has the experience in development projects management and leams from domestic existing research results of construction-agent system.In this particular environment of constructions in new district,author research on the sign of construction contract,the choice of construction-agent,the scope of construction-agent,the organization of construction-agent,as well as the costs of construction-agent and management risks of construction-agent system that from the perspective of construction-agent.

本文作者在开发区从事工程项目管理工作，广泛借鉴国内已有的代建制研究成果，在城市新区建设这个特殊环境，从代建人的角度对代建合同签署、代建人选择、代建范围、代建组织方式以及代建费用管理及代建制风险等进行了应用研究。

The realized conditions of the construction industry supply chain synergy are put forward through the analysis of the construction industry vertical supply chain synergy using the method of evolutionary game (taking the construction suppliers and the general contractors for example). With the horizontal coordination problems in the construction market put forward, the synergetic mechanisms among the government, industry associations, market players and the rules of the market in the construction market are analyzed. The existed technology-economic system coordinated model is improved and the synergetic degree model of construction industry system itself is set up. The conclusion is drawn that the economic benefit indicators and technology indicators of Chinese construction industry system synergy low and the two must be synergized through the analysis of the synergetic degree of the economic benefit indicators and technology indicators of the construction industry system.

5对建筑业纵向供应链协同(以建筑供应商和总承包商为例)进行了演化博弈分析，提出了建筑业供应链协同的实现条件；分析了建筑市场中政府、行业协会、市场主体、市场规则之间的协同机制；对已有的科技——经济系统协调模型进行改进，形成了建筑业系统本身的协同度模型，并对建筑业系统的经济效益和科技指标的协同度进行分析，得出我国目前建筑业系统的经济效益指标和科技指标的协同度低，必须协同二者之间的关系。

For the steel truss girder with abroad \\\"bridge crane bar assembled Law,\\\" the level of technology and equipment as a result of the limited duration of its long, far from being able to meet China\\\s bridge construction project as requested in the analysis of large-span suspension bridge mountain girder erection difficulties under the premise that after the election raised more than Aizhai Bridge \\\"self-cross-cable crane swing shift\\\" program to set up the main truss, which is mountainous suspension bridge girder erecting another major innovation.

对于钢桁梁，用国外的"桥面吊机杆件拼装法"，由于工艺和设备水平所限其工期长，远不能满足中国桥梁建设工期的要求，在分析山区大跨悬索桥主梁架设困难的前提下，经过多方案比选提出矮寨大桥"自行式跨缆吊机荡移"架设主桁方案，这是山区悬索桥主梁架设的又一个重大的创新。

His female bullfighter Lydia gradually Health love, but she was in a vegetative state after the Bulls Zhuangcheng away from her, just because Lydia's ex-boyfriend showed more affectionate than he is like love.

他对女斗牛士莉迪亚渐生爱意，却在她被公牛撞成植物人后离她而去，仅仅因为莉迪亚的前男友表现出好似比他更深情的爱。

I know of none which are not easy to answer, but what I am trying to do now is only by a series of hints to throw some light on the narrow path of legal doctrine, and upon two pitfalls which, as it seems to me, lie perilously near to it.

我不认为有什么难以回答的问题，但我现在要做的仅仅是通过一系列线索，来给法律理论的狭窄路径以及在我看来离它近得危险的两个陷阱提供一些启示。