查询词典 swivel bridge

The result shows combination using of lead rubber bearing and seismic restrainers can not only eliminate the usual defects of curved PC box girder bridge,but can also avoid the negative effect that caused by seismic restrainers,so it is deserved to make popularized.

结果表明：将铅销橡胶支座与常用限位辅助设计结合应用，既可以减轻常见病害，同时避免了限位装置带来的不利影响，值得推广应用。

Association Web site is a member of corporate and social communication link connecting the bridge, we have the spirit of sharing of resources, a letter addressed to sincere cooperation and win-win and common development purposes to the community, units and individuals to provide related services, in order to understand the industry, the exchange of provide a platform for information, hoping the community supervision and help.

协会网站是与会员、企业及社会沟通连接的桥梁纽带，本著资源共享、致诚致信、合作共赢、共同发展之目的向社会、单位及个人提供相关服务，为了解行业、交流信息提供平台，希望得到社会各界的督导和帮助。

Taking Shahe Bridge as an example,the composite strengthening for stone arch bridges by pouring reinforced concrete that steel wire net and steel fiber included(3-steel concrete for short) and sticking steel plate is presented,and the trailer with 240t loads was successfully transited.

在电厂建设等涉及大型特殊物件运输的项目中，按常规荷载等级设计的旧石拱桥，其承载力已难以满足特殊荷载通行的要求。以沙河桥为例，介绍了用钢丝网、钢纤维增强钢筋砼与环氧砂浆粘贴钢板的复合加固措施，解决了大件运输中240 t重件通过的技术问题

This paper analyzes the cause of defect of concrete bridge asphalt surface decoration layer, and puts forward corresponding countermeasurs.

分析了沥青桥面铺装层产生病害的原因，并提出了相应的对策。

The durability of concrete structure in general air environment, including concrete carbonization mechanism and influencing factors, steel corrosion mechanism and influences to the structural mechanical performance, cracks of concrete caused by the expansion of corrosion and the relation between width of crack and amount of corrosion, and the life estimation of reinforced concrete structure. At the same time, the paper introduced durability paint for concrete of xichang Cable-stayed bridge.

一般大气环境下普通钢筋混凝土结构的耐久性，包括混凝土碳化机理及影响因素、钢筋锈蚀机理及对结构力学性能影响、混凝土锈胀开裂及裂缝宽度与锈蚀量之间的关系以及钢筋混凝土结构寿命评价等，并利用以上理论对西昌斜拉桥钢筋混凝土塔柱进行了预测分析。

The application of steel bar threaded connection technology among bridge construction;2. The problem of gas leakage caused by the hose falling out is solved by means of threaded connection of a specified length bellows to the hotplate.

在居民用户室内燃气工程中采用不锈钢波纹管，安装L型灶前台式阀，通过波纹定尺管与灶具螺纹连接，解决了胶管脱落引发燃气泄漏的问题。

Qiongzhou Bridge is a province the use of bond funds the construction of national key projects, but also the provincial government for the development of regional economy in Northeast qiong taken significant measures, engineering概算总投资193 million yuan .

琼州大桥是省利用国债资金建设的国家重点项目，也是省政府对区域经济发展的东北琼采取重大措施，工程概算总投资一万九千三点〇〇万元。

An engineer directs the construction of a bridge.

他描绘出这个工地的平面图。

An engineer directs the construction of a bridge.

工程师指挥桥梁之建筑。

Adopt an automation to control the labour intensity being able to improve the product efficacy and lighten a worker not only, and have very good economic returns and social benefits on electroplating production line, wielding PLC is that the automation controls , PLC has reliability height can come true , adaptability has communication function , the modularized characteristic of structure broadly on electroplating production line,therefore how to use good PLC to have become the key that the electroplating production line automation controls , use PLC to add up with frequency transformer carrying out autocontrol on electroplating automation production line bridge crane, Having the structure simplicity , the programming going to the lavatory , handling nimbly , using safety , job stability , strong characteristic of reliable and anti-interference ability of function, is one kind of effective autocontrol way , is that electroplating produces the direction realizing high-effect .

在电镀生产线上采用自动化控制不但可以提高产品生产效率和减轻工人的劳动强度，而且有着非常好的经济效益和社会效益，电镀生产线上运用PLC则可以实现自动化控制，PLC具有可靠性高，适应性广，具有通信功能，结构模块化的特点，因此如何使用好PLC成了电镀生产线自动化控制的关键，用PLC辅以变频器对电镀自动生产线行车进行自动控制，具有结构简单、编程方便、操作灵活、使用安全、工作稳定、性能可靠和抗干扰能力强的特点，是一种很有效的自动控制方式，是电镀生产实现高效、低成本、高质量自动化生产的发展方向。

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。