ULTIMATE STRENGTH AND DEFORMABILITY OF CONCRETE FILLED AND COVERED STEEL TUBE COLUMNS WITH SEVERAL MATERIAL COMBINATIONS
ULTIMATE STRENGTH AND DEFORMABILITY OF CONCRETE FILLED AND COVERED STEEL TUBE COLUMNS WITH SEVERAL MATERIAL COMBINATIONS
批准号:
08455262
负责人:
NAKAMURA Yuji
金额:
$1.41万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (B)
财政年份:
1996
资助国家:
日本
项目状态:
已结题
起止时间:
1996 至 1997
中文摘要
本文的研究目的是获得钢管混凝土柱在几种材料组合下的极限承载力和塑性变形能力,并寻求最佳的材料组合。普通和/或高强度混凝土(Fc= 240 kg/cm ^2和Fc= 500 kg/cm ^2)用于钢管柱和钢管填充柱。柱为大、小直径圆管或中心宽翼缘截面,试件为十字形柱梁组合体。试验结果表明,钢管混凝土柱的广义附加强度公式可以较好地估算钢管混凝土柱的极限承载力,即使采用高强混凝土也是如此。但对于采用宽翼缘截面的柱,其极限承载力往往过高,箍筋外混凝土的极限承载力应考虑为fc '= 0.2fc。此外,大直径钢管混凝土柱和小直径钢管混凝土柱的塑性变形能力都很高,分别相当于日本建筑标准法中规定的结构等级I的FA和结构等级FB,因此,由此可见,广义附加方程可以较好地估算钢管混凝土柱的极限承载力。这些柱子对地震力有韧性。
英文摘要
The purposes of this research are to obtain the ultimate strength and the plastic deformability of concrete filled and covered steel tube columns with several material combinations and to seek the optimum material combinations. Ordinary and/or high strength concrete (Fc=240kg/cm^2 and Fc=500kg/cm^2) are used for covered and filled steel tube columns. And columns have circular tubes with large or small diameter, or wide flange sections at the center respectively.Test specimens are sub-assemblages of cruciform consisted of columns and beams. They are loaded with repeated bending moments, which corresponds to severe seismic loadings, as well as vertical loading, 30% of axial force capcity of the columns simultaneously.It is obtained from the experiment results that the generalized additional strength equations of columns can evaluate the ultimate strength of concrete filled and covered steel tube columns satisfactorily, even using high strength concrete. However, for columns using wide flange sections, it overestimates usually, and the ultimate strength of concrete outside of hoop reinforcement should be considered to be fc'=0.2fc. Moreover, the plstic deformability of columns with concrete filled and covered steel tube with larger diameter and with smaller diameter were judged to be considerably high, which corresponds to FA to the structural rank I and FB to the structural lank respectively defined with Japanese Building Standard Law.Consequently, as the conclusions the ultimate strength of concrete covered and filled steel tube columns can be estimated with the generalized additional equations satisfactorily. And these columns are ductile to seismic forces.
期刊论文(3)
专著(0)
科研奖励(0)
会议论文
上浦 一成: "材料の組み合わせ考慮した被覆充填型鋼管コンクリート柱の耐力と変形性能" 日本建築学会中国支部研究報告集. 21巻. 253-256 (1998)
Kazunari Kamiura:“考虑材料组合的涂层和填充钢管混凝土柱的屈服强度和变形性能”日本建筑学会中国分会研究报告第21卷253-256(1998)
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通讯作者:
上浦一成: "材料の組み合わせを考慮した被覆充填型鋼管コンクリート柱の耐力と変形性能" 日本建築学会中国支部研究報告集. 21巻. 253-256 (1998)
Kazunari Kamiura:“考虑材料组合的覆盖填充钢管混凝土柱的屈服强度和变形性能”日本建筑学会中国分会研究报告第21卷253-256(1998)。
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通讯作者:
KAZUNARI UEURA: "ULTIMATE STRENGTH AND DEFORMABILITY OF CONCRETE FILLED AND COVERED STEEL TUBE COLUMNS WITH SEVERAL MATERIAL COMBINATIONS" PROCEEDINGS OF AIJ TYUGOKU AND CHAPTER ARCHITECTURAL RESEARCH MEETING. VOL.21. 253-256 (1998)
KAZUNARI UEURA:“具有多种材料组合的混凝土填充和覆盖钢管柱的极限强度和变形性”AIJ TYUGOKU 和章节建筑研究会议论文集。
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