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北京东方文化艺术中心工程为大型公共建筑,结构存在平面不规则、竖向不规则、大底盘多塔楼、局部转换层等诸多不利因素,属于复杂高层建筑结构。工程设计过程中,从结构概念设计出发,分析结构的抗震薄弱部位及其薄弱程度,区别对待,综合考虑,使用多种程序进行计算研究,采取有针对性的抗震加强措施和细部构造处理,达到提高结构延性、保证结构抗震安全的目的。 相似文献
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西安曲江国际会议中心结构体型复杂,结构平面及竖向布置均不规则,属特别不规则类型建筑,是集混凝土、钢结构、型钢混凝土、钢管桁架等多种材质及构件为一体的大型综合体建筑。介绍了这一项目的结构特点。设计中采用了40m跨的型钢混凝土桁架作为竖向转换构件,并从计算和构造上予以加强;运用多种不同形式的空间钢管桁架构成高低起伏的波浪形屋面;主桁架的支座采用了部分滑动支座,克服了温度应力的影响。 相似文献
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针对工程因建筑造型新颖而存在多种体型不规则,不能满足国家现行相关规范与规程规定的情况,采用基于性能的抗震设计方法来进行结构设计,以提高整体结构的抗震性能。同时结合工程结构体系特点和不规则情况,有针对性地提出关键位置结构构件的性能设计目标,并采用不同计算软件进行整体结构计算对比分析,研究了结构构件的抗震性能,并对结构设计提出了可行的建议。 相似文献
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三明沙县机场航站楼屋盖为单层弧形曲面。屋盖钢结构采用平面弧形刚架结构体系。结构设计包括动力特性和静力分析,以及稳定分析。结构体系稳定,选用的构件截面、连接节点形式合理、美观。很好的体现了建筑形态和设计理念。 相似文献
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通过算例对新型轻钢楼板与在钢结构体系中广泛应用的压型钢板混凝土组合楼板进行了设计和对比分析,得出新型轻钢结构楼板综合效益明显,具有广阔的应用前景的结论。 相似文献
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Experimental and numerical assessment of stayed steel columns 总被引:1,自引:0,他引:1
R.R. de Araujo P.C.G.da.S. Vellasco J.G.S. da Silva 《Journal of Constructional Steel Research》2008,64(9):1020-1029
Stayed steel columns may be used as compression-resisting members of a structure presenting high slenderness ratios and fast erection requirements. The system is able to sustain a wide range of load levels and lengths with economic and reliable structural solutions. Although this structural solution dates back from the 1960s its structural behaviour is not fully understood. This fact motivated a study of the system structural behaviour by means of an experimental program followed by finite element simulations aiming to determine the most efficient structural geometries and the corresponding steel ties pre-stress force magnitudes. A series of full-scale tests were executed in 12 m pre-stressed steel columns with a 90 mm diameter. Some of the main contributions of the current study are related to the conception, development and execution of new tri-dimensional full-scale tests and the development of a finite element model calibrated against these experiments. An extensive parametric analysis based on the calibrated finite element simulation was also performed focusing on the most significant parameters that could affect the structural response, i.e., column length and diameter, pre-stress force magnitude, among others. The test and numerical results will certainly contribute to the development of updated design procedures and formulae to be introduced in future structural design codes. 相似文献
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Qiao Yu Hao Wu Lingzhi Li Emadeldin Ogail Qingyun Liu Xuelian Zhao Yang Liu 《The Structural Design of Tall and Special Buildings》2023,32(13):e2037
Grille-type steel plate composite (GSPC) shear wall is an innovative wall system consisting of concrete cores, steel faceplates, steel tie plates, and steel channels with more advantages than conventional reinforced concrete (RC) walls, including better ductility, higher bearing capacity, and easy-modular characteristics. This paper mainly discusses the seismic performance and damage resistance of GSPC walls to the entire structure from the aspect of the structural level. Three nonlinear numerical models of high-rise structures with different structural heights and types were established by PERFORM-3D software to study the influence of GSPC walls on the change in structural internal forces and deformations compared with RC walls. One of these structures was selected to conduct the seismic fragility analysis based on the incremental dynamic analysis and to assess the structure's seismic performance with GSPC walls. Finally, the seismic damage prediction method was used to evaluate the damage levels of the GSPC wall structure. Results indicate that the structures with GSPC walls suffer more significant seismic forces than those with RC walls, although they experience lesser structural deformations. Moreover, GSPC walls can effectively improve the structure's collapse and seismic damage resistance. 相似文献
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以某一110 kV输电线路双钢管杆为研究对象,采用萤火虫优化算法对双钢管杆结构进行优化设计分析。采用有限元法壳单元建立双钢管结构的力学模型,并调入到MATLAB编写的萤火虫优化算法中;以双钢管杆结构用钢总重量为优化目标,以结构的刚度和强度为约束条件,对钢管杆主要构件的管径和壁厚共26个设计变量进行优化分析。获得的双钢管杆结构优化分析结果在满足设计规范的前提下减轻了结构重量,充分利用了各部件的力学性能,达到了节约成本的目的。本文的结构优化设计方法可为钢管杆结构制造提供了参考。 相似文献
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采用ANSYS有限元软件分析了一竖向不规则的型钢混凝土框架核心筒结构的动力特性和多遇地震下的位移反应,通过Pushover分析考察了结构的整体抗震性能和薄弱部位,分析结果表明结构竖向收进处由于刚度的突变成为整个结构的薄弱环节。 相似文献
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高层钢结构中框架—支撑结构是一种常用的结构形式,文中介绍了支撑结构体系的发展情况.以某实际工程为例,说明了普通钢支撑和屈曲约束支撑两种不同支撑对结构弹性性能的影响,通过静力弹塑性推覆分析对比研究了两种方案的弹塑性性能,并对屈曲约束支撑采用偏心布置形式对框架梁的影响进行了探讨. 相似文献