共查询到20条相似文献，搜索用时 171 毫秒
1.
对风雨操场屋面钢网架与下部主体混凝土结构进行整体计算分析,共设计了2个不同的结构模型.通过计算结构层间位移角、地震剪力及动力特性研究模型之间存在的差异,为后续此类结构的设计提供参考. 相似文献
2.
靖树华 《延安职业技术学院学报》2020,(1):102-105
结合齐齐哈尔南站站房钢网架屋面实际情况,分析铁路站房钢网架吊装施工方法及施工质量的控制措施。结果表明:在地面完成钢网架基本跨拼装,然后通过起重设备将拼装好的钢网架提升到安装位置进行固定,接着在基本跨两侧四组同步进行高空散装,不仅缩短施工周期,降低施工成本,同时确保施工质量。值得施工单位借鉴推广。 相似文献
3.
天津大学游泳馆屋顶采用波浪形网架结构 ,造型新颖、独特 ,很好地体现了建筑物的使用功能 .采用波浪形网架与下部钢筋混凝土框架相互作用的整体计算模型 ,对该网架进行了分析和设计 ,同时 ,对该类波浪形网架的抗震性能进行了研究 . 相似文献
4.
《邢台职业技术学院学报》2019,(5):79-83
在对徐州某干煤棚钢网架作筒壳工程设计时,结合结构功能要求、使用空间要求、经济效益等因素,利用空间结构分析设计软件3D3S进行建模、上部结构体型和支座的优化来有效吸收较大的水平推力,经济效益显著。 相似文献
5.
为实现双碳目标,配电网需要进行目标网架结构规划.本文根据近期负荷预测和饱和负荷预测得到的结果,结合上级电网的站点布置规划,对某工业园区进行电力平衡分析,结果表明:该工业园区容载比符合电力平衡的要求.根据目标网架的要求,对该工业园区进行了目标网架结构规划,最后通过典型案例印证了目标网架结构规划方案的可行性. 相似文献
6.
本工程1000人大会堂屋顶,采用了刚架及网架组合结构.钢结构具有自重轻、安装容易、施工周期短、抗震性能好等综合优势,钢结构网架可做到大跨度、大空间施工,而且施工速度快、抗震有利.本文主要从结构特点,施工技术工艺等方面叙述了刚架及网架组合结构在大跨度、大空间工程中的施工过程. 相似文献
7.
鲁辉 《宁波职业技术学院学报》2010,14(2):102-105
分析了现浇上弦板式网架跨度、长宽比、支座刚度、上弦混凝土板厚、网格尺寸和网架高度对现浇上弦板式网架结构自振特性的影响,得到了现浇上弦板式网架结构的自振频率变化规律和关于抗震分析的一些结论。 相似文献
8.
韩玺艳 《石家庄铁路职业技术学院学报》2018,(1)
针对弦支网架张拉过程中预应力控制、张拉方案选取的问题,结合北塘游泳馆的弦支网架结构,制定了张拉方案,并利用Ansys有限元软件对网架结构强度、网架挠度、拉索内力进行张拉模拟。研究结果表明:弦支网架撑杆的最大轴拉应力为36.1 MPa,网架中间部位最大挠度为28 mm,拉索最大内力为380 k N,均符合安全设计要求。张拉方案、张拉原则保证了弦支结构体系承载力及整体刚度良好,相对于弦支穹顶、弦支梁等弦支结构,新型弦支结构体系传力效率高、稳定性好,可为其他弦支网架工程的安全性研究提供参考。 相似文献
9.
范文龙 《广东广播电视大学学报》2009,18(4):109-112
目前,钢结构建筑特别是钢结构屋盖得到了飞速发展。基于平面桁架受力清晰、传力路线明确和空间网架的刚度大、整体稳定性好、传力路线短等优点,结合管桁架的特点,提出交叉管桁结构。通过交叉管桁结构算例与其他屋盖结构体系算例的比较,得出这种结构形式受力合理,单位面积用钢量少,具有一定优势。 相似文献
10.
张旭东 《闽西职业技术学院学报》2002,4(2):72-73
漳龙高速公路某收费棚网架,属正放四角锥螺栓球网架结构,呈长条形。原施工方案采用滑移脚手架高空散装法。为克服原施工方案工期较长的缺点,工程技术人员对网架安装各种施工方法进行分析比较,提出了将网架局部分解,主体安装完成后剩余部分网架进行二次拼装成形的施工方案。施工中,网架中间48.6m段先进行地面总拼,拼装完成后两边各布1台25t汽车式起重机进行吊装,网架两端各剩余5.4m通过搭设满堂钢管支架进行二次拼装成形。本方案实施后起到确保质量、缩短工期、节约投资的良好效果。 相似文献
11.
以轻钢结构临建房屋骨架结构试验为基础,采用有限元分析软件Ansys提出轻钢结构临建房屋的有限元计算模型建立方法,并对轻钢结构临建房屋骨架结构的水平侧移进行计算和分析。计算结果表明,所采用的有限元计算模型建立方法正确合理,且轻钢结构临建房屋骨架结构在设计荷载作用下的水平侧移不能满足规范要求。 相似文献
12.
Seismic behavior of diaphragm-through connections of concrete-filled square steel tubular columns and H-shaped steel beams 总被引：1，自引：1，他引：0
Based on the introductions of a type of diaphragm-through connection between concrete-filled square steel tubular columns (CFSSTCs) and H-shaped steel beams,a finite element model of the connection is developed and used to investigate the seismic behavior of the connection.The results of the finite element model are validated by a set of cyclic loading tests.The cyclic loading tests and the finite element analyses indicate that the failure mode of the suggested connections is plastic hinge at the beam with inelastic rotation angle exceeding 0.04 rad.The suggested connections have sufficient strength,plastic deformation and energy dissipation capacity to be used in composite moment frames as beam-to-column rigid connections. 相似文献
13.
采用有限元软件MSC．Superform对角钢热连轧过程进行有限元模拟。介绍了模拟过程中的模型建立、材料参数、边界条件以及载荷的定义,分析了轧制过程中轧件温度场的分布和变化过程,分析结果对制定角钢热连轧过程的温度制度提供了有效参考。 相似文献
14.
Based on the characteristics of an L-shaped column composed of concrete-filled square steel tubes, the axial compression experiment and nonlinear finite element analysis were carried out to study the mechanical property of the L-shaped column. The load-displacement curve for the L-shaped column, the deflection and load-strain curves for the mono columns were obtained by the axial compression experiment. The results show that the L-shaped column exhibits a flexural-torsional buckling failure mode. The numerical simulation by the finite element analysis shows that the bearing capacity and failure mode are in accordance with those of the axial compression experiment and the feasi- bility of the finite element analysis is proved. For the calculation of the bearing capacity of the L-shaped column com- posed of concrete-filled square steel tubes, an analytical method is proposed based on the theory of the elastic stability and spatial truss model. The results of the analytical method are in good agreement with those of the axial compression experiment and the finite element analysis. 相似文献
15.
Parameter effects on the dynamic characteristics of a super-long-span triple-tower suspension bridge 总被引：1，自引：0，他引：1
A 3D finite element model for the Taizhou Yangtze River Bridge, the first triple-tower long-span suspension bridge in China, is established based on the nonlinear finite element software ABAQUS, and the dynamic characteristics of the bridge are analyzed using the LANCZOS eigenvalue solution method. The study focuses on the effects of the vertical, lateral and torsional stiffness of the steel box girder, the rigid central buckle and the elastic restraints connecting the towers and the steel box girder on the dynamic characteristics of the triple-tower suspension bridge. Our results show that, in general, the dynamic characteristics of the triple-tower suspension bridge are similar to those of two-tower suspension bridges. The vertical, lateral and torsional stiffness of the steel box girder have different effects on the dynamic characteristics of triple-tower suspension bridges. The elastic restraints have a more significant effect on the dynamic characteristics than the central buckle, and decreasing the stiffness of the elastic restraints results in the appearance of a longitudinal floating vibration mode of the bridge. Also, rigid central buckles have a greater influence on the dynamic characteristics of triple-tower suspension bridges than on those of two-tower suspension bridges. The results obtained could serve as a valuable numerical reference for analyzing and designing super-long-span triple- tower suspension bridges. 相似文献
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17.
The study of the interfacial and bond behaviour of reinforced cement-based materials is important for understanding the mechanical behaviour of such composites. This paper presents extensive experimental, theoretical and finite element analyses of pull-out tests of galvanised steel strips with different geometries, in lightweight cement-based material blocks with different densities and mechanical properties. The theoretical model proposed here is capable of determining the pull-out strength and bond stress versus the slip relationship between components of reinforced cement-based materials. This bond-slip relationship is then implemented in finite element simulation through the user-defined subroutine of ABAQUS software. Based on the results, a trilinear bond-slip model is suitable for modelling the interface between a steel strip and a cement-based material interface. 相似文献
18.
退化钢筋混凝土桥梁概率耐久性评估方法 总被引：1，自引：0，他引：1
提出了考虑时间、空间变异特性的退化钢筋混凝土桥梁耐久性概率评估的随机有限元方法.首先,通过考虑钢筋与混凝土之间时变的粘结滑移关系及腐蚀钢筋的应力应变关系,采用弥散裂纹方法对退化钢筋混凝土桥梁进行有限元分析.然后,提出了退化钢筋混凝土桥梁耐久性概率评估的随机有限元分析方法,基于文献及现场调查的数据,采用蒙特卡罗仿真方法对... 相似文献
19.
A study of the behaviour of constructional cold-formed stainless steel beams at elevated temperatures was conducted in this paper. An accurate finite element model （FEM） for stainless steel beams was developed using the finite element program ABAQUS. Stainless steel beams having different cross-sections were simulated in this study. The nonlinear FEM was verified against the experimental results. Generally, the developed FEM could accurately simulate the stainless steel beams. Based on the high temperature stainless steel material test results, a parametric study was carried out on stainless steel beams at elevated temperatures using the verified FEM. Both high strength stainless steel EN 1.4462 and normal strength stainless steel EN 1.4301 were considered. A total of 42 stainless steel beams were simulated in the parametric study. The effect of temperatures on the behaviour of stainless steel beams was investigated. In addition, a limiting temperature for stainless steel beams was also proposed. 相似文献
20.
Theresistanceofapipelinesteeltohydrogensulfidestresscorrosioncracking (SCC)andhydrogen inducedcrack ing (HIC)isveryimportantforsteeltobeusedinsouroil/gasapplications.ElongatedMnSinclusionsarethemostsus ceptiblesitesforHICinitiation[1] ashydrogenatomscaneasi lyaccumulateattheinterfacebetweenthesteelmatrixandnon metallicinclusions.ThesegregationofsuchelementsasP ,Mn ,Cinthesteelenhancestheformationofhardbandsoncooling[2 ] .Theexistenceofthebandingstructurenotonlydecreasestheresistanceofthe… 相似文献