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Base on the summarization of the 50 years safety and high efficient coal mining achievements with hydraulic powered shield supports in Huainan coal mines the paper analyzed the rational layout of the gateway,optimized geometric parameters of thecoal mining face,improvement in potential,reform and invonvation,production process control,mien water and mine fire prevention and control,the siutbal conditions for the pseudo inclined coal mining with flexible shild support and other key technologies.

1概况1956年淮南煤矿先后试验了木结构的平板型、撬板形、"く"形、"人"形,钢结构的弧形、弓形、"く"形、"八"形等掩护支架,通过多次工业性试验并对所试验的掩护支架结构进行了一系列改革和完善,终于形成了目前所用的钢结构八字形掩护支架。以单腿支撑式掩护支架为例,八字形掩护支架是由钢梁、钢丝绳、垫板和绳卡、U形螺栓、扁铁、柱托、滑托板等组成。

Fire protection methods of the steel structure are an ineluctability problem relative to the reinforced concrete structure, because the action of high temperature will make the intensity and strength of the steel structure decrease quickly.

相对于钢筋混凝土结构,钢结构在高温下,其强度和刚度都将迅速降低,承载力也随之降低,使得钢结构在较短时间内达到极限状态以至破坏。

WEB light_gauge steel joist system is a new type of light steel structure.

无比钢结构是一种新型的轻钢龙骨体系,我国现有的结构软件无法直接对其进行设计和计算,采用有限元方法是目前进行结构分析较好的选择。

WEB light-gauge steel joist steel system is a new type of light steel structures. Because the current structural software in China can't be directly used to design and analyze this kind of structure, the Finite Element Method is the suitable analysis method for the structural analysis of WEB Steel.

无比钢结构是一种新型的轻钢龙骨体系,我国现有的结构软件无法直接对其进行设计和计算,采用有限元方法是目前进行结构分析较好的选择。

Beijing brave strong Construct steel structure design inquire Co.,Ltd is by at steel structure develop domain work near 30 year professor level advanced engineer propose, has ever went in for country a lot of emphases projects register structural engineer and a group of possess abundant empirical profession microscopist foundation.

北京博锐思创建筑钢结构设计咨询有限公司是经在钢结构研发领域工作近30年的教授级高级工程师倡议,由曾参与过国家众多重点工程项目的注册结构工程师及一批具有丰富经验的专业技术人员所创建。

The structural analysis of steel frame is a fundamental problem in the design of steel structural which should take the second order effects into account.

钢框架的结构分析是钢结构设计中的基本问题,对于该类结构的分析应该考虑二阶效应的影响。

Based on structures with a typical configuration but different stories as well as 80 suitable seismic records, the statistical amplifying factors for estimating the elastoplastic displacements of braced and unbraced steel building frames subjected to severe earthquakes have been obtained through a great number of numerical calculations.

本文在合理地选取丰富的地震记录及典型的结构形式的基础上,通过大量计算,统计得出了有支撑和无支撑钢框架结构在罕遇地震下弹塑性位移增大系数,以此提出了抗震设计时进行罕遇地震下多高层建筑钢结构弹塑性位移验算时的实用计算数表。

As compared with other heat preservation materials, XPS Extruded Board has a number of advantages when it is used in formed steel roof heat preservation structures:It makes the steel roof structure more durable thanks to its durability; it prevents cold-bridge of steel roof structure and guarantees against dewing and weeping inside buildings; it meets the requirements of load of different structures and execution of works for its high pressure strength; it meets the requirements of different environments and is suitable for factory buildings with high cleanness requirements for it is cleam and does not produce any dust thanks to its compactness of texture.

和其它的保温材料相比,挤塑板用于压型钢板屋面保温构造有着诸多优点:挤塑板的持久性使钢结构屋面持久耐用挤塑板用于钢结构屋面可以避免冷桥发生,保证建筑物内部不结露不滴水;挤塑板的抗压强度可适应各种结构及施工的荷载要求;挤塑板材质紧密、洁净而不产生粉尘,能适应各种环境的要求,亦适合净度要求高的厂房

This report is to generate a set of earthquake response data of bench-mark model of a five-story steel structure though a shaking table test. Test data is issuable in the data base on web site of NCREE and will be provided for structural system identification research.

中文摘要:本研究旨在以进行振动台试验的方法,建立一1/2缩尺五层楼钢结构建筑之原始模型(bench-mark model),将此一钢结构建筑於动态行为下的反应资料整理后,将完整地置於本中心网站上对外开放的资料库之内,以提供国内外相关学术领域进行结构物系统识别研究之用。

The company has undertaken large workshop and deep foundation trench construction with high content of technique and complex equipment (super 60M span heavy single-layer steel structure),large dock project,manufacture and installation of 300T large span gantry crane,60T portal crane,150T large span bridge crane,The company wonWhite Yulanaward for its highrise office building,Jin Gangaward for its steel-structured bridge works,Shen Gang Cupquality structure of malarge rine traffic engineering for its large dock project,etc.

公司曾承接过技术含量高,装备复杂的大型(跨度达60MM的超大跨度重型单层钢结构)工业厂房和深基坑工程,大型船坞项目,300T大跨度的门式、60T门座式、150T大跨度的桥式起重机械制造和安装。其中高层商务楼曾获&白玉兰&奖;钢结构桥梁工程获&金刚奖&;大型船坞项目获水运工程优质结构&申港杯&奖等荣誉奖章。

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你知道吗,我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。

Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。