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1.
高层钢结构组合楼盖的设计研究 总被引：1，自引：0，他引：1
苏锦中 《泰州职业技术学院学报》2006,6(3):5-8
基于对高层钢结构设计中的三种常见组合楼盖的优缺点分析,论述了适当的连接形式可以保证压型钢板与混凝土可靠连接的机理,组合楼盖的设计验算主要包括施工阶段验算与使用阶段的验算。构造设计包括栓钉的设置、混凝土板的配筋、压型钢板尺寸及表面处理。对组合楼盖的设计研究有利于高层钢结构建筑的长足发展。 相似文献
2.
本文根据国内外对压型钢板组合梁腹板开洞问题的研究,对腹板开洞压型钢板组合梁的研究现状、破坏模式、计算方法等方面进行了介绍,并探讨了腹板开洞压型钢板组合梁有待深入研究的问题. 相似文献
3.
使用“两变量法”和“混合摄动法”对非均布横向载荷作用下的正交各向异性板的大挠度问题进行了研究,获得了两邻边固定两部边自由正交各向异性矩形板对ε1为N阶和对ε2为M阶的一致有效渐近解． 相似文献
4.
介绍了钢筋焊接网的技术特性及国内外发展概况,对钢筋焊接网在钢结构压型钢板混凝土组合楼板中应用的构造和优点进行了分析,指出在钢结构建筑的压型钢板混凝土组合楼板中应用钢筋焊接网,具有构造简单、工程质量好、施工速度快、综合经济效益较好等的明显优点,应用前景良好. 相似文献
5.
刘辉 《赤峰学院学报(自然科学版)》2011,(11):153-154
现浇混凝土空心板两个方向的刚度存在差异,在确定了这种差异的大小后,才能明确其正交异性亦或是各向同性.本文应用弹性力学中的里茨法,结合空心板两向刚度计算公式,分析给出现浇混凝土空心板弹性挠度计算公式,并与PKPM软件结果进行对比,验证公式的准确性. 相似文献
6.
刘小丽 《连云港职业技术学院学报》2011,24(3):7-10
利用ANSYS有限元软件对压型钢板组合梁模型进行了有限元数值模拟分析。将有限元分析结果与试验结果进行比较,验证了有限元模型的合理性。 相似文献
7.
压型钢板是指：薄钢板经冷压或冷轧成型的钢材。钢板采用有机涂层薄钢板（或称彩色钢板）、镀锌薄钢板、防腐薄钢板（含石棉沥青层）或其他薄钢板等。本文就压型钢板的特点分析其未来发展前景。 相似文献
8.
基于哈密顿体系求解方法,针对具有轴对称性的正交各向异性磁电弹性圆板的弯曲问题进行求解.解决问题的基本思路为:首先将该问题的基本方程导入哈密顿体系,得到哈密顿方程;然后研究哈密顿方程的零本征值对应的本征解;最后得到原问题的解析解.与该问题的其它求解方法相比较,哈密顿体系方法具有明显的优越性. 相似文献
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10.
提出了正交向粘贴CFRP条带和钢板条带的新型复合加固方法,利用CFRP条带和钢板条带共同工作,以提高钢筋混凝土结构的性能.为了检验该方法加固钢筋混凝土双向板的效果,对7块尺寸为1 500 mm×1 500 mm×70 mm、配筋率为0. 22%的双向板进行了集中荷载下的受压试验,其中1块板未加固,1块板在板底粘贴CFRP条带形成格栅加固(CFRP格栅),5块板在板底正交向粘贴CFRP条带和钢板条带形成复合格栅加固(CFRP-钢板格栅),并用螺栓锚固.研究参数包括加固方法、条带间距(150,200,250 mm)和CFRP条带的层数(CFRP-钢板格栅中分别包含1层、2层和3层CFRP条带).试验结果表明:与CFRP格栅加固板相比,CFRP-钢板格栅能有效延缓钢筋混凝土双向板的开裂并提高其承载能力和变形能力.利用塑性铰线理论模型计算加固板的承载力,计算结果与试验结果吻合较好. 相似文献
11.
张荣荣 《荆门职业技术学院学报》2008,23(12)
根据瓦楞纸板的结构特征,采用Hoff夹层板理论,研究分析瓦楞纸板横向振动的表述形式。该研究工作为瓦楞纸板缓冲防振包装的优化设计提供参考依据,对深入研究瓦楞纸板的缓冲防振性能具有良好的理论指导意义。 相似文献
12.
沥青混凝土铺装层各参数对铺装层力学性能的影响 总被引：4，自引：0，他引：4
影响正交异性钢桥面铺装层力学性能的重要参数古铺装层的厚度和沥青混凝土铺装层的模量．铺装层典型破坏的3个控制指标是铺装层的最大横向拉应力、钢板和铺装层间的最大剪切应力和铺装层的最大挠度．本建立正交异性钢桥面铺装体系分析模型，用有限元方法进行了铺装体系的受力分析，研究在高、低温季节沥青混凝土模量变化的情况下，不同铺装层厚度对三大控制指标的影响．研究结果对钢桥面铺装层厚度的确定提供了理论依据． 相似文献
13.
The nonlinear analysis of reinforced concrete rectangular slabs undermonotonic transverse loads is performed by finite element method.The layered rectangu-lar element with 4 nodes and 20 degrees of freedom is developed,in whichbending-stretching coupling effect is taken into account.An orthotropic equivalentuniaxial stress-strain constitutive model of concrete is used.A program is worked out andused to calculate two reinforced concrete slabs.The results of calculation are in goodconformity with the corresponding test results.In addition,the influence of tension stif-fening effect of cracked concrete on the results of calculation is discussed. 相似文献
14.
Dynamic tests of three bonded and two unbonded full-prestressed concrete beams were carried out.The purpose was to seek the relation between prestressing force and natural frequency.Test results indicate that the frequency of prestressed concrete(PSC)beam increases with the increase in prestressing force approximately.The results are different from the dynamic characteristics of isotropic material beam subjected to compressive axial force which were put forward by Clough et al.The reason is that the beams were considered as isotropic,homogeneous,linear elastic material in the traditional analysis method.However,more accurate results are required in the analysis of frequency of PSC beam.The constitutive mode of PSC member is analyzed based on microstructure of concrete in this paper.The orthotropic linear elastic mode is used to analyze the relation between dynamic frequency and prestressing force of concrete beam,at the same time the equivalent stiffness of prestressed tendon relating to the prestressing force is added to the bending deformation stiffness of the beam.The analytical value agrees well with the test result,indicating that the current analysis method in this paper is feasible to full-prestressed concrete beam. 相似文献
15.
INTRODUCTION On Jan. 17, 1995, the Hyogoken-nanbu earth-quake in Kobe, Japan, caused great destructive and damage to underground structures, such as subway structures, mountain tunnels, multipurpose under-ground ducts and other underground structures, which had previously been considered to be resistant to earthquake effects (JSCE, 1996; ECRHAED, 1998). This earthquake revealed that a number of critical issues should be added in the seismic design and seismic strengthening of undergr… 相似文献
16.
Bin Rong Rui Liu Zhenyu Li Changxi Feng Guangchao You Fafitis Apostolos 《天津大学学报(英文版)》2017,23(3):258-266
Finite element analysis and parametric studies were performed to investigate the flexural capacity of the panel zone of diaphragm-through joints between concretefilled square steel tubular columns and H-shaped steel beams.Through the comparisons of failure modes,load–displacement curves,and bearing capacity,it was found that the flexural capacity of the panel zone of diaphragmthrough joints was determined by the tensile action and influence of the web of H-shaped steel beams,and the axial load should be taken into account.The steel tube and the diaphragm were the major parts of the joint that resisted the bending moment.The contribution of in-filled concrete had little influence on the flexural capacity of the panel zone of the joint and could be neglected.According to the results of these numerical studies,a formula that considered the influence of the web of H-shaped steel beams and the axial load was developed based on the yield lines in the diaphragm and the steel tube.The results of the proposed formula were in good agreement with the numerical data of this investigation. 相似文献
17.
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
18.
Jin-yang Zheng Yong-jian Gao Xiang Li Xiu-feng Lin Yu-bin Lu Yan-cong Zhu 《浙江大学学报(A卷英文版)》2008,9(5):640-647
Plastic pipes reinforced by cross helically wound steel wires （PSP）, which have exhibited excellent mechanical performance, consist of inner polyethylene （PE） layer, winding layer and outer PE layer. The winding layer is composed of two monolayers where steel wires are cross helically wound. An analytical procedure is developed to predict the short-term burst pressure of PSP as the monolayer is assumed to be elastic and orthotropic. The 3D anisotropic elasticity and Maximum Stress Failure Criterion are employed in the formulation of the elasticity problem. Good agreement between the theoretical results and the experimental data shows that the proposed approach can well predict the short-term burst pressure of PSP. 相似文献
19.
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
20.
从工程实例出发,对一座钢管混凝土拱桥建立了有限元模型,从线弹性和几何非线性两个方面进行了数值分析,分析表明该桥的屈曲稳定比较可靠,结构失稳模态均为拱肋面外失稳,表明拱肋的横向刚度相对系梁较弱. 相似文献