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£© b/100ÇÒ¡Ü3.0 b Tolerance of Member Welded Connection Table 1.3-10
Item ¶Ô¿Ú´í±ß£¨£© Tolerance£¨mm£© /10 and ¡Ü3.0 a ? a b Legend b b Clearance£¨a£© ¡À1.0 a ? ? Length of lap over£¨a£© ¡À5.0 a ? ? Gaping£¨£© 5 ¡À2.0 ? Height£¨h£© h Verticality£¨£© b/100 and ¡Ü2.0 b e Central deviation£¨e£© ¡À2.0 Profile Misplacement Joint Point 0 ? Others 2.0 ? Height of box type cross section (h£© Width£¨b£© ¡À2.0 h b ? ? ¡À2.0 Verticality£¨ £© b/100 and ¡Ü3.0 b £¨7£© HÐ͸ÖÖù H-shape steel column
a ÖÆ×÷Á÷³Ì¼ûͼ1.3-2£¬ÖÆ×÷ʾÒâͼ¼ûͼ1.3-3£¬ÖÆ×÷ʾÒâͼ¼ûͼ1.3-4¡£
Please see the fabrication follow table 1.3-2 and schematic diagram of fabrication 1.3-3.
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Finished product Figure1.3-2
Shop detail drawing Lofting and material drafting Making hole, cutting, machining groove Cutting splice plate Making hole Welding Assembling splice plate Appearance shaping Fabrication flow table of H-shape steel column
ͼ1.3-3 HÐ͸ÖÁ¢ÖùÖÆ×÷ʾÒâͼ
b Á¬½Ó°å¡¢¼ÓÇ¿½î°åÓëHÐ͸ÖÁ¢Öù×麸ʱӦ·ûºÏÏÂÁÐÒªÇó£º
The following requirements should be met when assembling and welding gusset plate,
Figure 1.3-4 Sketch of H-shape steel beam fabrication
Figure 1.3-3 sketch of H-shape steel column fabrication
stiffener and steel beam:
¡ª¡ª¼ì²éÁ¬½Ó°åµÄ¶¨Î»³ß´ç£¬±ê¸ßÔÊÐíÆ«²îΪ¡À2mm£¬Î»ÖÃÆ«ÒÆÔʲîΪ2mm£» Check poisoning dimensions of gusset plates, the allowable deviation of displacement is 2mm.
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Apply poisoning and clamp apparatus when assembling and welding. Set up anti-deforming plates when welding.
¡ª¡ªÁº¼Ó¹¤ºóµÄ³¤¶ÈÓ¦±ÈÉè¼ÆֵС1mm£¬ÒÔÀûÓÚÏÖ³¡°²×°¡£
The length of fabricated beam should be less 1mm than designed value so as to be easy to install on site.
c Öùµ×°åÓëÁ¢Öù×麸ʱ·ûºÏÏÂÁÐÒªÇó£º
The following requirement should be met when base plate is welded with column: ¡ª¡ªÖùµ×°åÖÐÐÄÏ߶ÔÁ¢ÖùÖÐÐÄÏßÆ«ÒÆÔʲîΪ2mm£»
The allowable deviation of the centerline of base plate is 2mm in relation to the centerline of column.
¡ª¡ªÖù½ÅÂÝ˨¿×ÖÐÐÄÏ߶ÔÁ¢ÖùÖáÏßÆ«ÒƾàÀëÔʲîΪ3mm£»
The allowable deviation of centerline of hole of anchor bolts is 3mm in relation to the centerline of column.
¡ª¡ªÖùµ×°åƽÕû¶ÈÔÊÐíÆ«²îΪ1mm/m¡£ The tolerance of flatness of base plate is 1mm/m.
d ÓëÁºµÄÂÝ˨Á¬½ÓÃ棬½øÐÐÅçÍè³ýÐ⣬±£Ö¤Á¬½ÓÃæµÄĦ²ÁϵÊý²»Ð¡ÓÚ0.45¡£²¢²ÉÈ¡±£»¤´ëÊ©£¬Õ³Ìù½º´ø£¬·ÀÖ¹¶þ´ÎÐâÊ´£¬µ«²»µÃͿĨӰÏìĦ²ÁϵÊýµÄÓÍÆá¡¢ÓÍÖ¬µÈ¡£
Carry out shot blasting to connected surface of bolt with beam and ensure frication factor is not less than 0.45. Perform protection measures such as sticking the adhesive tape to prevent from rusting again. But applying paints and oil & grease that will affect the frication factor are not permitted.
£¨8£© º¸½Ó Welding
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Manual electric arc welding and CO2 gas shielded welding will be adopted. Process parameters of welding are shown in the table 5.9
a º¸Ç°×¼±¸ Preparation before welding ¡ª¡ªº¸Ç°±àÖƺ¸½Ó¹¤ÒÕ¹æ³Ì£¬²¢¾ÆÀ¶¨ºÏ¸ñ¡£