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2. 发明申请

WO2003057931A2 COLD-FORMED STEEL JOISTS 审中-公开
标题翻译：冷成型钢管
公开(公告)号：WO2003057931A2
公开(公告)日：2003-07-17
申请号：PCT/US2003/000267
申请日：2003-01-07
申请人： WATSON, Dennis, P. , GOLOVIN, Maury , TONEY, Patrick
发明人： GOLOVIN, Maury , TONEY, Patrick
IPC分类号： C22C
CPC分类号： E04C3/09 , E04C2003/0473 , E04C2003/0486 , E04C2003/0491
摘要： A metallic joist is provided comprising cold-formed top and bottom chords, and coldformed metallic truss web members arranged in a vertical and diagonal fashion shop welded to the chords. End connections, or "seats" are each shop welded to the top chord and to one of the webs. Each seat comprises a pair of vertical metallic planes that act as shear plates, welded to and extending outwardly and upwardly of the end portion of the top chord of the joist, and portions extending horizontally either side of the chord and punched with holes for easy field bolting to beams or other supporting elements. Each of the chords comprises a planar base and a pair of legs. Each leg comprises a chamfered portion extending downward and outward from one edge of the base at an acute angle to the horizontal; e.g., about 45 degrees, for stiffening the longitudinal edges of the base, to accommodate axial and moment forces. An upper vertical portion, perpendicular to the base, extends downward from a lower end of the chamfered portion to provide a planar width of material to accommodate axial and moment forces. An inwardly recessed portion parallel to the base extends towards the chord's center line from a lower end of the upper vertical portion; and an attachment portion, perpendicular to the base, extends downward from an inner end of the inwardly recessed portion. The inventive chord imparts the joist of the present invention with enough strength and stiffness to span up to 100-foot lengths.
摘要翻译：提供了一种金属托梁，其包括冷成型的顶部和底部和弦，以及以垂直和对角线方式设置的冷成型金属桁架腹板构件，焊接到和弦。终端连接或“座椅”每个商店都焊接到顶弦和其中一个网。每个座椅包括一对垂直的金属平面，其作为剪切板，焊接并且在托梁的顶弦的端部部分的外部和向上延伸，并且在弦的两侧水平地延伸并且用孔冲孔以便容易螺栓连接到梁或其他支撑元件。每个弦包括平面基部和一对腿。每个腿包括从基部的一个边缘向下并向外延伸的倒角部分，其与水平面呈锐角; 例如约45度，用于加强基部的纵向边缘，以适应轴向力和力矩力。垂直于基座的上垂直部分从倒角部分的下端向下延伸，以提供材料的平面宽度以适应轴向力和力矩力。平行于基部的向内凹部从上垂直部分的下端朝向弦的中心线延伸; 并且垂直于基座的附接部分从内凹部分的内端向下延伸。本发明的和弦赋予本发明的托梁具有足够的强度和刚度以跨度达100英尺长。

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