共查询到19条相似文献，搜索用时 363 毫秒
1.
提高连系梁的延性是改善剪力墙结构搞震性能的关键.以钢连梁代替现有的带缝混凝土连梁的新结构,能更好保证其设计破坏荷载,减少施工困难,有效地作为地震能耗能机构. 相似文献
2.
梁倬贤 《钦州师专钦州教院学报》2007,22(6):75-77
提高连系梁的延性是改善剪力墙结构搞震性能的关键．以钢连梁代替现有的带缝混凝土连梁的新结构，能更好保证其设计破坏荷载，减少施工困难，有效地作为地震能耗能机构． 相似文献
3.
4.
本文探讨了连梁对高层建筑结构整体性能的影响及其受力原理和破坏形式,讨论了连梁的概念设计方法．对高烈度区结构设计时连梁出现承载力不足现象进行了适用性分析,讨论了常用的设计措施． 相似文献
5.
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
6.
利用有限元软件ABAQUS对纯钢框架试件、冷弯薄壁型钢组合墙体试件、钢框架-冷弯薄壁型钢组合墙体试件、覆双面OSB板的钢框架-冷弯薄壁型钢组合墙体试件进行水平低周往复荷载作用下研究,分析了试件的滞回曲线、骨架曲线、抗侧刚度、延性和耗能等。结果表明,钢框架与冷弯薄壁型钢组合墙体有明显的组合效应;冷弯薄壁型钢组合墙体能明显增强钢框架结构的承载力、刚度、延性和耗能能力;覆双面OSB板钢框架-冷弯薄壁型钢组合墙体结构抗震性能较不覆板的钢框架-冷弯薄壁型钢组合墙体结构抗震性能好。 相似文献
7.
通过大型有限元软件ANSYS对带刚性连梁的双肢短肢剪力够结构的刚度以及混凝土的非线性进行计算和分析。结果显示:设置刚性连粱可以有效地增强短肢剪力墙结构的侧移刚度,同时具有较好的延性性能。 相似文献
8.
钢梁与钢筋混凝土桥墩的新型刚节点联结形式及其静载反复试验 总被引：1，自引：0，他引：1
提出了一种新型的桥梁钢梁与钢筋混凝土桥墩的刚节点联结形式．刚节点内部构件间的连接全部采用高强度螺栓连接方式且施工方便，能够较理想地将上部结构弯矩传递到下部结构，剪力传递钢板承受了大部分的水平剪力．通过静荷载反复试验获得了有关这种新型结构性能方面的有效数据，试验结果表明该结构内部应力传递路径明确，并具有良好的抗震性能．有关结构的强度和塑性变形的计算及试验结果均表明，这种结构即使在发生很大变形的情况下，也能保持良好的能量吸收功能且没有出现因应力集中而发生的局部曲屈现象．由于避免使用了价格昂贵的支座，采用这种新型组合结构形式不但具有良好的抗震性能，同时可以降低桥梁的建设成本． 相似文献
9.
为了研究新型全装配式剪力墙结构体系中水平接缝的可行性及抗震性能,制作了2个试件并分别进行单调加载试验与低周反复加载试验.在试验的基础上研究了该全装配式剪力墙的荷载-位移曲线、承载能力、延性性能、抗侧刚度、钢筋应变、连接钢框的应变分布以及连接钢框与内嵌边框之间的相对滑移等.试验结果表明:试件具有较好的承载能力及延性,位移延性系数达3.7以上;在整个试验过程中,除受压端外,连接钢框中的正应力及剪应力远小于其屈服强度;试件受压端内嵌边框与连接钢框之间发生了一定的相对滑移,达1.13 mm,而受拉端二者之间未发生明显的相对滑移.该全装配式剪力墙结构体系的水平接缝安全可靠,抗震性能良好,方案可行. 相似文献
10.
偏心支撑钢框架是一种新型抗震结构体系，耗能梁段长度是影响其性能的重要参数，本文通过对一偏心支撑钢框架结构进行时程分析，进一步验证其在大震作用下良好的抗震性能。 相似文献
11.
INTRODUCTION Due to the increasing number of building story braced by transferring member during development of high or superhigh rise buildings, and the many de-mands and restrictions on floor height and space in architecture, it is necessary to use steel reinforced concrete (SRC) materials in transferring structure. SRC has high bearing capacity, good stiffness and relatively less section dimension, and ductility, dura-bility and aseismic behavior better than that of rein-forced concre… 相似文献
12.
孙韬 《兰州石化职业技术学院学报》2008,8(3):47-49
为了能够更好地分析混凝土收缩对钢-混凝土组合梁内力的影响,在混凝土自身收缩特性的基础上,分析了钢-混凝土组合梁的混凝土收缩应变特性,从而得出凝土收缩引起的钢-混凝土组合梁的内力计算公式,并由此分析了混凝土收缩引起的内力对组合梁产生的混凝土板提前开裂、挠度增加等直接影响。 相似文献
13.
倒T型钢混凝土组合梁正截面抗弯承载力计算分析 总被引：1，自引：0，他引：1
由一般的非对称性工字型钢混凝土组合梁,采用变形协调模型推导总结不同情况下的型钢混凝土组合梁正截面抗弯承栽力计算公式,进而得到倒T型钢混凝土组合梁的正截面承载力。通过算例,采用推导的理论公式及ANSYS软件对等截面、等含钢量的两类组合梁的极限承栽力进行分析计算,表明倒T型钢混凝土组合梁正截面受力较工字型钢混凝土组合梁好及采用的理论公式是正确可行的。 相似文献
14.
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
15.
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
16.
A pseudo-dynamic testing program was generated on a fabricated composite frame with steel plate shear walls (SPSWs) to study its seismic performance. The specimen was a three-storey single-bay frame, which was composed of H-section steel columns and composite beams, and was assembled by bolted height-adjustable steel beam-to-column connections (BHA connections). Beam-only-connected SPSWs were selected as lateral load resisting members. The specimen was subjected to four ground motions of progressively increasing intensity. The results showed that: (1) beam-only-connected SPSWs provided sufficient lateral load resistance, lateral stiffness, and energy dissipation capacity to the fabricated frame via the tension field action developed in their infill panels; (2) the fabricated frame, assembled by BHA connections, exhibited substantial redundancy and good ductility; (3) an undesirable failure mode of the fabricated frame, in huge earthquakes, included severe cracking in composite beams and block shear failure in SPSWs’ connections; (4) the inter-storey shear force distribution determined by ASCE/SEI 7-10 was verified with experimental data. 相似文献
17.
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
18.
复杂体型钢筋混凝土高层建筑的推覆分析方法和应用 总被引：2，自引：0，他引：2
In this paper, push-over analysis for tall concrete structures was made and a corresponding computer program was given.Several kinds of elements in the program were considered to meet the demand of tall buildings with complex structural type. These elements included beam-column element for beams and columns, single slice wall element and three vertical line element for walls, and tube-wall element for tubes. Computational example for verifying the models indicates that the result obtained by this method is identical with a well-known test result and the program can be used to search for the full process of structural reaction, even the softening stage of the structure. With this push-over analysis method, an actual tall building with complex structural type was analyzed, and the result has been put into practice of the structural design of the building. 相似文献
19.
Prestressed steel ultrahigh-strength reinforced concrete (PSURC) beam is a new type of prestressed concrete beam, which not only has a considerable compressive strength attributed to the ultrahigh strength concrete, but also ensures a certain degree of ductility at failure due to the existence of structural steel. Five of these beams were monotonically tested until shear failure to investigate the static shear performance including the failure pattern, load-deflection behavior, shear capacity, shear crack width and shear ductility. The experimental results show that these beams have superior shear capacity, crack control ability and shear ductility. To study the shear performance under repeated overloading, seven PSURC beams were loaded in cyclic test simultaneously. The overall shear performance of cycled beams is similar to that of uncycled beams at low load level but different at high load level. The shear capacity and crack control ability of cycled beams at high load level are reduced, whereas the shear ductility is improved. In addition, the influences of variables including the degree of prestress, stirrup ratio and load level on the shear performance of both uncycled and cycled beams were also discussed and compared, respectively. 相似文献