Because geometry size of steel column base of national stadium are big , whose stress state is complex , and similar experiments were few in the past at home and abroad 国家体育场钢结构柱脚由于受力及几何尺寸均较大,构造及其受力较为复杂,现有规范对该钢柱脚的计算假定与设计方法很难适用,以往国内外类似的试验也很少。
Faced with building to an unprecedented height , architect minoru yamasaki and engineers john skilling and les robertson employed rigid " hollow tubes " of closely spaced steel columns with floor trusses extended across to a central core 由于面临着一个空前的建筑高度,建筑师山崎实与约翰?斯奇林和莱斯?罗伯逊等工程师采用了由密距钢柱构成的坚硬“空管”结构,并在其中的井道部分辅以地板桁架。
But at present , the study on homemade h - section steel members are far from perfect . based on this status , the in - plane stability capacity for homemade rolled h - section steel columns under eccentric load is analyzed in this paper 然而国产热轧h型钢是进几年才出现的，对其力学性能的研究比较少，基于这样一个情况，本文着重就轧制h型钢偏心受压构件在弯矩作用平面内的稳定性能进行研究。
Based on the data of japanese prefabricated steel column base , acted in accordance with the present steel structure code , the paper put emphasis on hk400b ' s column base . firstly , the mechanism of force - deformation was analyzed theoretically . then the corresponding mechanical model was established , and adopted the structure nonlinear analysis part of the ansys finite element software to calculate 本文以日本的预制铸钢柱脚的研究资料为基础，采用现行钢结构规范建议的铸钢材料，针对型号为hk400b的h形钢柱柱脚，首先对受力-变形性能机理进行理论分析，建立相应的力学计算模型，并利用ansys有限元程序软件中结构非线性分析部分来加以计算，得出在选择不同锚栓和底板厚度时铸钢柱脚的破坏形式以及柱脚的m - p -曲线，在此基础上对标准化柱脚设计提出了建议性方案，便于工程设计参考。
Although cold - formed rectangular tube - steel column is favorable to industrialization of mass production , the cold forming process increase the yield point and tensile strength , at the same time the cold forming process decrease the ductile behavior , so it ’ s necessary to research the seismic behavior of cold - formed rectangular tube - steel column for architecture structure 冷弯矩形钢管虽然可以实现大批量工厂化生产,但冷弯矩形钢管在冷成型过程提高了材料的屈服点和抗拉强度同时降低了延性,因而冷弯矩形钢管作为柱材在建筑结构抗震中的应用有待进一步研究。
Four groups of eight types of connection methods are suggested to be able to use for the joint of cold - formed rectangular tube - steel column and h - shaped beam by investigating the current research on the beam - to - column connection methods used at home and abroad , at the same time , a new type of connection is proposed in this article 本文在对国内外冷弯矩形钢管与焊接箱形钢管节点型式研究的基础上总结出四类八种适合于冷弯矩形钢管柱与h型钢梁连接的节点型式,并提出一种新型节点连接型式,分别给出了相关的设计规定和使用条件。
The idiographic contents are listed as follows : 1 ) through the tests of the anchorage performances of steel column bases of 1 / 5 scale under uniaxial reversed loads , the tested ultimate loads , ductility , stiffness and reasonable modes of reinforcement design of two specimens are presented in this thesis 本文主要工作: 1 .进行了两个1 / 5缩尺的钢筋混凝土承台-钢柱脚试件单向重复加载下的锚固性能试验研究,对试件的锚固承载力、延性、刚度以及合理配筋型式等进行了研究。
On the basis of simplified calculation model presented by doctor wangxiaoping , some finite element models are set up . by finite element model program sap93 , an analysis of static models of 18m - span and 30m - span w666 acmr in different supporting conditions is made . also a study on the relation between definite support displacement , which reflect variational stiffness of substructure represented by steel column or reinforced concrete column , and load - carrying capacity mechanical performance is made too 本文以w666金属拱型波纹屋顶为研究对象，沿用王小平博士的简化计算模型，对18m 、 30m跨波纹拱两端不同支座形式(铰支、固支和弹性支座)分别利用有限元计算程序sap93进行计算分析，研究波纹拱在不同跨度，不同支座形式下，不同外荷载作用时对该结构受力性能及稳定承载力的影响，同时分析下部支承钢柱、钢筋混凝土柱的刚度变化体现为允许支座位移的大小与结构受力性能及稳定承载力之间的关系。
An elastic - plastic and geometrically nonlinear finite element method is developed to analyze ultimate strength of h - shape steel columns under axial compressive loading . initial imperfections including residual stress due to hot - rolled and initial overall deflections of columns are considered . an experiment study of 21 h - shape steel columns with slenderness parameter of ranging from 40 to 120 is conducted to verify the theory results 本文通过弹塑性和几何非线性的有限单元法理论分析，在长细比范围在40 ? 120的21根国产h型钢轴心受压柱的承载力试验中进一步证实了这一理论的合理性和有效性。
Combining the composite steel column ' s phenomenon of collapsing of a certain power plant , this paper calculates the ultimate load of the composite steel column with the three - dimensional finite element method ; points out the fracture behavior and the failure mechanism of the composite steel column ; analyses the local buckling of this kind of steel column ; and proposes the general method for solving the similar problems 结合某电厂组合钢柱承载坍塌现象，用三维有限元法计算出该组合钢柱的极限荷载，指出了该组合钢柱的破坏机理与破坏过程，并探讨了该类钢柱的局部稳定性问题，提出了解决同类问题的一般性方法。
