结构工程

The prefabrication and hoisting of steel structural tower are crucial work in oil and gas pipeline crossing.

钢结构塔架的预制和吊装是石油天然气管道跨越工程的关键，目前国内同行业中，尚无一套较成熟、完整、有效控制变形的施工方法。

Earthquake input pattern has become a principal focus in the research on earthquakeresistance of engineering structures.

地震输入问题一直是工程结构抗震研究所关注的焦点。

Through theoretical analysis and calculation examples,the principle for the rational choice of the concrete strength grade has been put forward by the author,which can be used as the reference of relevant engineering design.

目前混凝土结构设计中混凝土强度等级的选择有越来越高的发展趋势，笔者通过理论分析及计算实例，提出了合理选用混凝土强度等级的原则，可供有关工程设计的参考。

The intraconjunction in date structure of DCO provides the theoretical foundation for parametrizing DCO and establishing the attribute relation of product component information, while the inter-hyperlink in information integration of DCO forms DC perception like Web browse and establishes the foundation of WWW pattern in engineering product information.

图元对象内部数据结构的关联性为参数化设计图元模型以及确立产品构件信息的属性联系提供了理论基础；图元对象外部信息集成的链接性形成了类似于Web浏览机制的图元感知模式，为工程产品信息的WWW实现模式奠定了基础。

The objective establishment, database design, organizational structure and function of Changsha city engineering prospection system are described.

介绍了长沙市工程勘察系统建立目标、数据库设计、系统的组织结构和功能等方面的内容

This paper introduces water pump house caisson construction of Huaneng Yuhuan Power Plant 1 000 MW unit,including geological conditions,structure and construction preparation,ordering and scheme.

对华能玉环电厂1 000 MW机组工程的雨水泵房沉井施工作了介绍，包括：地质条件、结构型式和施工准备、顺序、方案。

Including: applicationprogram interface of UG and VC++ 6.0 based platform, customization of MenuScript, visible design application of UG/Open UIStyler, and 3D design and application in the program of UG/Open API;(3)The gross structure of whole system is designed on the base of open and alternate method, and complete all the modules design and development of the major parts (cavity die, core rod and puncher) and the related mold ( part import, technology judgement, major part assembly and schedule drawing ) of the powder metallurgy forming die.

包括：基于UG平台和VC++6.0应用程序的接口、主菜单MenuScript的用户定制、对话框UG/Open UlStyler的可视化设计和应用UG/Open API语言编程进行三维造型设计等；(3)系统采用开放式和交互式的设计思路，完成了系统的总体结构设计。完成了粉末冶金模具成形模关键零件及其相关模块(加载产品、工艺判别、主要零件装配和工程图)的设计开发工作。

This paper introduces the structural design of various typical medium-wave radiating antenna which have been constructed in our country.

本文较系统地介绍了我国已建成的各种典型中波发射天线的结构设计，可供相关的工程设计人员参考。

Based on theory of structural dynamics and differential equation, the requirement of state complete observability is infered related to vibration modes, which is more acceptable for engineering than the counterpart of modern control theory related to rank of matrix in algebra.

这一条件较之现代控制理论中以矩阵秩的形式给出的相应条件更易为工程实际所接受，对测量装置的位置设置提供了理论依据，并指出无干扰驱动项的经典的Luenberger观测器对结构控制是不适宜的。

Adopt at present most advanced large-scale SUPER SAP finite element structure analyse procedure to go on numerical value calculation for model of drilling rod, drilling rod whole stress simulation of state that receive show and reflect drilling rod various kinds of stresses under different working states distribute the characteristic clearly, make stress state of drilling rod reach visual, make people able to understand informations of drilling rod of stress status in depth too at the same time, so that the design of the improvement drilling rod constantly is in order to meet the demands of actual project.

采用当前最先进的大型SUPER SAP有限元结构分析程序对钻杆的模型进行了数值计算，得到的钻杆整体应力状态的模拟显示清楚地反映了钻杆在不同工作状态下的各种应力分布特征，同时也使钻杆的应力状态达到了可视化，使人们可以深入了解钻杆应力状态信息，以便不断的改进钻杆的设计以满足实际工程的需要。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐