共查询到19条相似文献，搜索用时 144 毫秒
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应用大型有限元分析软件ANSYS,对钢筋混凝土异形柱框架结构进行动力特性和弹塑性时程分析。得到钢筋混凝土异形柱框架结构的自振频率、振型特点,以及异形柱框架结构在8度抗震设防情况下顶层水平位移时程曲线、顶层加速度时程曲线、水平位移沿楼层高度分布曲线及层间位移角沿楼层高度变化曲线。研究了底层层高和结构高度等对异形柱框架结构地震反应的影响。 相似文献
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应用非线性曲线拟合技术，得出了横向承载桩柱土反力随挠度及深度的变化规律，并应用数值分析方法，计算了桩柱的承载能力及刚度，对于横向承载桩柱的设计和使用具有一定指导使用。 相似文献
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孙露 《邯郸职业技术学院学报》2003,16(1):59-61
每项工程必须根据所确定的受力模型选取相应的结构程序进行计算和设计。在目前设计行业中，最常见的几个问题是：选用PK程序设计时，未考虑框架柱双向配筋；平面不规则框架仍选用PK程序，而实际应选用TAT程序；对底层框架上部砖混结构，选用了PK程序，实际应选用底层框架设计程序；框架梁抗剪钢筋直接采用PK程序出图结果，而未经分析调整。 相似文献
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从造型、装饰、结构三方面介绍了汉代柱式和古罗马五种柱式的特征;比较汉代柱式与古罗马柱式的柱头、柱身、柱础三部分的差异;探讨汉代柱式与古罗马柱式差异的影响因素。研究结果可为现代的柱子设计提供借鉴。 相似文献
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阐述了平板—异形柱结构的适用范围、结构选型、材料选择、截面尺寸的确定和结构的内力分析方法,在此基础上得出了平板—异形柱结构构件的配筋计算方法和配筋构造要求,以供设计人员参考。 相似文献
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本文采用有限元分析程序对新型梁柱板柱组合结构体系不同高度、不同设防烈度（7度和8度）下的10组算例进行抗震计算。认为新型梁柱板柱组合结构体系有着比普通板柱组合结构更好的抗震性能，经合理设计可突破规范对板柱组合结构的高度限制。 相似文献
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目前,多层钢筋混凝土异形柱框架在设计计算及施工中都存在一些具体的问题有待进一步分析和探讨,异形柱框架结构的内力和位移按弹性方法计算,并考虑抗侧力结构的共同作用.异形柱的正截面承载力计算方法是将双向偏压弯矩近似化作轴向力作用在对称轴上的当量弯矩,再计算其正截面承载力,即"当量弯矩法". 相似文献
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基于移动最小二乘近似,用无网格法求解考虑材料非线性的混凝土受压柱,在分析中由于混凝土材料的非线性,利用Newton-Raphson迭代法进行求解,编制了相应的分析程序,对混凝土受压柱进行了数值分析。本文分析结果与解析解和有限元解进行比较,吻合较好。 相似文献
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Based on a series of previous studies, an experiment on the integral seismic behavior of a 1/3 scaled model of two-bay and three-story reinforced concrete frame with split columns at lower two stories is performed under cyclic loading. The original columns at lower two stories of the model frame are short columns and they are replaced by the split columns. The hysteresis curves between the horizontal cyclic load and the lateral displacement at the top of the model frame, indicate that under the cyclic loading, the model frame undergoes the process of cracking, yielding, and maxi-mum loading before being destroyed at the ultimate load. They also indicate that the model frame has better ductility, and the ratio of the ultimate displacement to the yielding displacement, reaches 6.0. The yielding process of the model frame shows that for the frame with split columns, plastic hinges are generated at the ends of beams and then the columns begin yielding while the frame still possesses the bearing and deformation capacity. The design idea of directly changing the short col-umn to long one in the reinforced concrete frame may be realized by replacing the short column with the split one. 相似文献
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Ten slender steel reinforced cencrete (SRC) composite columns are tested under eccentric loading conditions.Effects of concrete strength, slenderness of columns and eccentricity of the axial load are studied. The load-carrying capacity is reduced with increased slenderness ratio and eccentricity. Concrete strength has no obvious influence on eccentrically loaded columns. Then, a nonlinear numerical method of pin-ended slender columns is also presented. This method is applicable for determining the material failure load or buckling failure load of a slender steel reinforced concrete composite column. In this method both material and geometric nonlinearities are taken into account. The results of numerical analysis accord well with the test results. The test results are also compared with the results predicted by ACI318-05 and the China Specifications. 相似文献
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陈鹏 《泰州职业技术学院学报》2005,5(1):14-17,39
以一柱网尺寸(9m×9m)较大的建筑物为例,说明预应力混凝土柱下条形基础的受力分析,并与相同条件下的钢筋混凝土柱下条形基础进行技术、经济比较,得出预应力混凝土柱下条形基础较钢筋混凝土柱下条形基础的优缺点。 相似文献
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浅析钢筋混凝土框架结构设计 总被引：3，自引：0，他引：3
张月静 《邢台职业技术学院学报》2010,27(5):100-101
建筑结构设计是建设工程设计的重要环节,是保障建筑结构安全、实现建筑使用功能的灵魂。在我国现在的多高层建筑中,钢筋混凝土结构应用最普遍,其中钢筋混凝土框架结构是最常用的结构形式。为了使结构设计更加完善,本文依据GB 50010-2002混凝土结构设计规范和GB 50011-2001（2008年版）建筑抗震设计规范,针对框架结构设计中容易疏忽的几个问题进行了初步探讨,可供设计人员参考。 相似文献
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为研究偏心距对钢-连续纤维复合筋(SFCB)混凝土柱的受压性能,对7根混凝土强度等级为C35的SFCB混凝土柱进行静力受压试验,其中纵筋采用内芯钢筋6mm外包BFRP的SFCB。分析了偏心距对试件承载力、挠度、裂缝及破坏形态的影响。研究表明,偏心距越大,柱中挠度越大,最大裂缝宽度越大,极限承载力越小。 相似文献
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《天津大学学报(英文版)》2015,(3)
In order to improve the seismic performance, deformation ability and ultimate load-carrying capacity of columns with rectangular cross section, engineered cementitious composite(ECC) is introduced to partially substitute concrete in the edge zone of reinforced concrete columns and form reinforced ECC/concrete composite columns.Firstly, based on the assumption of plane remaining plane and the simplified constitutive models, the calculation method of the load-carrying capacity of reinforced ECC/concrete columns is proposed. The stress and strain distributions and crack propagation of the composite columns in different states of eccentric compressive loading are analyzed. Then, nonlinear finite element analysis is conducted to study the mechanical performance of reinforced ECC/concrete composite columns with rectangular cross section. It is found that the simulation results are in good agreement with the theoretical results, indicating that the proposed method for calculating the load-carrying capacity of concrete/ECC composite columns is valid. Finally, based on the proposed method, the effects of ECC thickness, compressive strength of concrete and longitudinal reinforcement ratio on the mechanical performance of reinforced ECC/ concrete composite columns are analyzed. Calculation results indicate that increasing the thickness of ECC layer or longitudinal reinforcement ratio can effectively increase the ultimate load-carrying capacity of the composite column with both small and large eccentricity, but increasing the strength of concrete can only increase the ultimate loadcarrying capacity of the composite column with small eccentricity. 相似文献