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方钢管较圆钢管有明显优势

网址:www.buxiugangw.cn  2019-09-27  作者:admin    阅读:

方钢管较圆钢管有明显优势,原因有三:
Square steel pipe has obvious advantages over round steel pipe for three reasons:
其一,同样边长和直径的方、圆管,合金钢管的承载力和抗震性能更佳,根据天津某大学对三层二跨合金钢管和圆管砼柱框架进行的试验,合金钢管柱边长150mm,圆管直径150mm,试验结果前者抗侧力屈服承载力和极限承载力较后者高出80%,抗震性能指标约为后者的两倍;
Firstly, the bearing capacity and seismic performance of alloy steel tubes are better than those of square and circular tubes with the same side length and diameter. According to the test of three-story two-span alloy steel tube and circular tube concrete column frame carried out by a university in Tianjin, the side length of alloy steel tube column is 150 mm and the diameter of circular tube is 150 mm. The yield capacity and ultimate bearing capacity of the former are 80% higher than those of the latter, and the seismic performance index of the former is about two of the latter. Times;
其二,合金钢管施工更方便。钢结构住宅的圆管砼柱一般还需进一步施工,将圆型截面改为方型;
Second, alloy steel pipe construction is more convenient. In general, the circular concrete column of steel structure residence needs further construction, and the circular section should be changed into square section.
其三,采用圆管砼柱,与梁的连接较难处理。我国未来的钢结构市场中,冷弯方矩形管将占重要的份额。
Thirdly, the connection between circular concrete column and beam is difficult to deal with. In the future steel structure market of our country, the cold-formed square rectangular tube will occupy an important share.
实际应用中,这两种基本方法,在合金钢管成型中应根据产品需要配置到合理的工艺位置。应注意实弯成型的拉伸/减薄效应和空弯成型的压缩/增厚效应对于产品质量的影响,否则将导致合金钢管成型时侧边内凹,成品管纵向翘曲,而且难以矫直。
In practical application, these two basic methods should be allocated to a reasonable technological position according to the product requirements in the forming of alloy steel pipes. Attention should be paid to the effect of the stretching/thinning effect of solid bending and the compression/thickening effect of empty bending on product quality. Otherwise, it will lead to concave side and longitudinal warping of finished pipe during alloy steel tube forming, and it is difficult to straighten.

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