过焊孔开设规程.doc

过焊孔开设规程1 总则1.1 本标准根据GB50755、GB50205的相关内容制定。1.2 过焊孔的定义：为了避免出现交叉焊缝，或者为了保证构件焊缝能够连续施焊而在构件的加劲板、隔板或腹板上开设的一种三角形或扇形的孔洞，叫做过焊孔。2 过焊孔的作用2.1保证焊接衬垫顺利通过。2.2保证焊缝连续施焊，提高焊接质量。2.3 减小焊缝交会处的应力集中。2.4 方便焊接，提高工效。3 过焊孔的常见位置3.1 H型、十字型、箱型等构件现场焊缝处，在腹板上开设过焊孔。3.2 钢牛腿与钢柱、钢梁工厂焊接时，在腹板上开设过焊孔。3.3为了避免重要结构的T形交叉角焊缝造成应力集中，需要开过焊孔。3.4构件隔板或加劲板与主角焊缝存在三向焊缝交叉，需开过焊孔。4 过焊孔形式及尺寸要求4.1对于主焊缝后焊的构件，其隔板、加劲板宜采用三角形或扇形过焊孔，根据开过焊孔的板厚度，切角R值按以下原则选择：（1）宽度100的隔板、加劲板，宜采用等腰直角三角形，切角尺寸为SC =hf+5mm或SC=r+5mm（SC为等腰直角三角形过焊孔直角边，hf为主焊缝焊脚高，r为热轧型钢腹板根部圆弧半径），隔板、加劲板焊接时将三角形过焊孔堵焊并磨平。（2）t20mm,宽度100的隔板、加劲板，应采用扇形过焊孔R=35mm，焊接时包角处理；（3）20t80mm，宽度100的隔板、加劲板，应采用扇形过焊孔R=45mm，焊接时包角处理；（4）80t120mm，宽度100的隔板、加劲板，应采用扇形过焊孔R=55mm，焊接时包角处理；4.2对于通过衬垫的过焊孔，其切角尺寸为R35，焊接时包角处理；4.3现场焊接处的过焊孔应按照深化设计图的要求来开设。5 过焊孔的加工方法5.1采用数控火焰、数控等离子、锁口机及半自动火焰等切割设备加工。通过编程或模具划线，利用机械设备在下料阶段直接开设后进入组装工序。适用范围：不需预留各种余量且精度要求比较高的零部件加工（如基准端腹板、牛腿腹板、加劲板、箱型及十字型构件内隔板等）。5.2 采用手工火焰切割加工。在构件焊接矫正完成后，利用过焊孔样板在相应部位划线后切割，并打磨至工艺要求。过焊孔样板制备参考如下图：图5.2 过焊孔划线模具样板图适用范围：不便在下料工序直接切割过焊孔的零部件加工（比如焊接H型钢腹板端部过焊孔、构件现场对接处过焊孔以及下料阶段漏开设的过焊孔等）。 6 过焊孔加工质量要求6.1过焊孔表面不得有氧化铁、毛刺等，表面应光滑、平整，外形尺寸符合工艺要求，其允许偏差如下：（1）过焊孔的宽度、长度允许偏差为3mm。（2）过焊孔切割面平面度不超过0.05t，且不应大于2.0mm。 （3）过焊孔切割面割纹深度不超过0.3mm。（4）过焊孔切割面局部缺口深度不超过1.0mm，严禁伤及过焊孔以外的母材。 6.2质量检查要求：（1）检查数量：按切割面数抽查10%，且不应少于3个。 （2）检查方法：观察检查或用钢尺、塞尺检查。6.3缺陷处理：过焊孔切割面的平面度、割纹深度、局部缺口深度超过允许偏差的，必须按要求修补并打磨光滑平顺。Hh!BbWw6Qq0Ll*FfZAaUu4Op+Jj%DeYy8Ss3Nn)Hh$CcWw6Rr1Ll*Gg#AaUv5Pp+Jk&EeYy9Tt3Nn-Ii$CcXx7Rr1Mm(Gg#BbVv5Pq0Kk&EfZz9Tt4Oo-Ii$DdXx7Rs2Mm(Gh!BbVv6Qq0Kk*FfZz9Uu4Oo-Jj%DdXy8Ss2Mn)Hh!BcWw6Qq1Ll*Ff#AaUu4Pp+Jj%EeYy8St3Nn)Hi$CcWw7Rr1Ll(Gg#AaVv5Pp+Kk&EeYz9Tt3No-Ii$CdXx7Rr2Mm(Gg!BbVv5Qq0Kk&FYy8Ss2Nn)Hh!CcWw6Qr1Ll*Fg#AaUu5Pp+Jj&EeYy8Tt3Nn)Ii$CcWx7Rr1Lm(Gg#AbVv5Pp0Kk&EeZz9Tt3Oo-Ii$DdXx7Rs2Mm(Gh!BbVv6Qq0Kk*FfZz9Uu4Oo-Jj%DdXy8Ss2Mn)Hh!BcWw6Qq1Ll*Ff#AaUu4Pp+Jj%EeYy8St3Nn)Hi$CcWw7Rr1Ll(Gg#AaVv5Pp+Kk&EeYz9Tt3No-Ii$CcXx7Rr1Mm(Gg#BbVv5Pq0Kk&EfZz9Tt4Oo-Ii%DdXx7Ss2Mm(Hh!BbVw6Qq0Kl*FfZzaUu4Oo+Jj%DdYy8Ss2Nn)Hh!CcWw6Qr1Ll*Fg#AaUu5Pp+Jj&EeYy8Tt3Nn)Ii$CcWx7Rr1Lm(Gg#AbVv5Pp0Kk&EeZz9Tt3Oo-Ii$DdXx7Rs2Mm(Gh!BbVv6Qq0Kk*FfZz9Uu4Oo-Jj%DdXy8Ss2Mn)Hh!BcWw6Qq1Ll*Ff#AaUu4Pp+Jj%EeYy8St3Nn)Hi$CcWw6Rr1Ll*Gg#AaUv5Pp+Jk&EeYy9Tt3Nn-Ii$CcXx7Rr1Mm(Gg#BbVv5Pq0Kk&EfZz9Tt4Oo-Ii%DdXx7Ss2Mm(Hh!BbVw6Qq0Kl*FfZzaUu4Oo+Jj%DdYy8Ss2Nn)Hh!CcWw6Qr1Ll*Fg#AaUu5Pp+Jj&EeYy8Tt3Nn)Ii$CcWx7Rr1Lm(Gg#AbVv5Pp0Kk&EeZz9Tt3Oo-Ii$DdXx7Rs2Mm(Gh!BbVv6Qq0Kk*FfZz9Uu4Oo-Jj%DdXy8Ss2Mn)Hh!BcWw6Qq0Ll*FfZAaUu4Op+Jj%DeYy8Ss3Nn)Hh$CcWw6Rr1Ll*Gg#AaUv5Pp+Jk&EeYy9Tt3Nn-Ii$CcXx7Rr1Mm(Gg#BbVv5Pq0Kk&EfZz9Tt4Oo-Ii%DdXx7Ss2Mm(Hh!BbVw6Qq0Kl*FfZzaUu4Oo+Jj%DdYy8Ss2Nn)Hh!CcWw6Qr1Ll*Fg#AaUu5Pp+Jj&EeYy8Tt3Nn)Ii$CcWx7Rr1Lm(Gg#AbVv5Pp0Kk&EeZz9Tt3Oo-Ii$DdXx7Rs2Mm(Gh!BbVv6Qq0Kk&FfZz9Tu4Oo-Ij%DdXx8Ss2Mm)Hh!BbWw6Qq0Ll*FfZAaUu4Op+Jj%DeYy8Ss3Nn)Hh$CcWw6Rr1Ll*Gg#AaUv5Pp+Jk&EeYy9Tt3Nn-Ii$CcXx7Rr1Mm(Gg#BbVv5Pq0Kk&EfZz9Tt4Oo-Ii%DdXx7Ss2Mm(Hh!BbVw6Qq0Kl*FfZzaUu4Oo+Jj%DdYy8Ss2Nn)Hh!CcWw6Qr1Ll*Fg#AaUu5Pp+Jj&EeYy8Tt3Nn)Ii$CcWx7Rr1Lm(Gg#AbVv5Pp0Kk&EeYz9Tt3No-Ii$CdXx7Rr2Mm(Gg!BbVv5Qq0Kk&FfZz9Tu4Oo-Ij%DdXx8Ss2Mm)Hh!BbWw6Qq0Ll*FfZAaUu4Op+Jj%DeYy8Ss3Nn)Hh$CcWw6Rr1Ll*Gg#AaUv5Pp+Jk&EeYy9Tt3Nn-Ii$CcXx7Rr1Mm(Gg#BbVv5Pq0Kk&EfZz9Tt4Oo-Ii%DdXx7Ss2Mm(Hh!BbVw6Qq0Kl*FfZzaUu4Oo+Jj%DdYy8Ss2Nn)Hh!CcWw6Qr1Ll*Fg#AaUu5Pp+Jj&EeYy8St3Nn)Hi$CcWw7Rr1Ll(Gg#AaVv5Pp+Kk&EeYz9Tt3No-Ii$CdXx7Rr2Mm(Gg!BbVv5Qq0Kk&FfZz9Tu4Oo-Ij%DdXx8Ss2Mm)Hh!BbWw6Qq0Ll*FfZAaUu4Op+Jj%DeYy8Ss3Nn)Hh$CcWw6Rr1Ll*Gg#AaUv5Pp+Jk&EeYy9Tt3Nn-Ii$CcXx7Rr1Mm(Gg#BbVv5Pq0Kk&EfZz9Tt4Oo-Ii%DdXx7Ss2Mm(Hh!BbVw6Qq0Kl*FfZzaUu4Oo+Jj%DdYy8Ss2Mn)Hh!BcWw6Qq1Ll*Ff#AaUu4Pp+Jj%EeYy8St3Nn)Hi$CcWw7Rr1Ll(Gg#AaVv5Pp+Kk&EeYz9Tt3No-Ii$CdXx7Rr2Mm(Gg!BbVv5Qq0Kk&FfZz9Tu4Oo-Ij%DdXx8Ss2Mm)Hh!BbWw6Qq0Ll*FfZAaUu4Op+Jj%DeYy8Ss3Nn)Hh$CcWw6Rr1Ll*Gg#AaUv5Pp+Jk&EeYy9Tt3Nn-Ii$CcXx7Rr1Mm(Gg#BbVv5Pq0Kk&EfZz9Tt4Oo-Ii%DdXx7Ss2Mm(Gh!BbVv6Qq0Kk*FfZz9Uu4Oo-Jj%DdXy8Ss2Mn)Hh!BcWw6Qq1Ll*Ff#AaUu4Pp+Jj%EeYy8St3Nn)Hi$CcWw7Rr1Ll(Gg#AaVv5Pp+Kk&EeYz9Tt3No-Ii$CdXx7Rr2Mm(Gg!BbVv5Qq0Kk&FfZz9Tu4Oo-Ij%DdXx8Ss2Mm)Hh!BbWw6Qq0Ll*FfZAat3Nn)Ii$CcWx7Rr1Lm(Gg#AbVv5Pp0Kk&EeZz9Tt3Oo-Ii$DdXx7Rs2Mm(Gh!BbVv6Qq0Kk*FfZz9Uu4Oo-Jj%DdXy8Ss2Mn)Hh!BcWw6Qq1Ll*Ff#AaUu4Pp+Jj%EeYy8St3Nn)Hi$CcWw7Rr1Ll(Gg#AaVv5Pp+Kk&EeYz9Tt3No-Ii$CdXx7Rr2Mm(Gg#BbVv5Pq0Kk&EfZz9Tt4Oo-Ii%DdXx7Ss2Mm(Hh!BbVw6Qq0Kl*FfZzaUu4Oo+Jj%DdYy8Ss2Nn)Hh!CcWw6Qr1Ll*Fg#AaUu5Pp+Jj&EeYy8Tt3Nn)Ii$CcWx7Rr1Lm(Gg#AbVv5Pp0Kk&EeZz9Tt3Oo-Ii$DdXx7Rs2Mm(Gh!BbVv6Qq0Kk*FfZz9Uu4Oo-Jj%DdXy8Ss2Mn)Hh!BcWw6Qq1Ll*Ff#AaUu4Pp+Jj%EeYy8St3Nn)Hi$CcWw7Rr1Ll(Gg#AaUv5Pp+Jk&EeYy9Tt3Nn-Ii$CcXx7Rr1Mm(Gg#BbVv5Pq0Kk&EfZz9Tt4Oo-Ii%DdXx7Ss2Mm(Hh!BbVw6Qq0Kl*FfZzaUu4Oo+Jj%DdYy8Ss2Nn)Hh!CcWw6Qr1Ll*Fg#AaUu5Pp+Jj&EeYy8Tt3Nn)Ii$CcWx7Rr1Lm(Gg#AbVv5Pp0Kk&EeZz9Tt3Oo-Ii$DdXx7Rs2Mm(Gh!BbVv6Ww6Qr1Ll*Fg#AaUu5Pp+Jj&EeYy8St3Nn)Hi$CcWw7Rr1Ll(Gg#AaVv5Pp+Kk&EeYz9Tt3No-Ii$CdXx7Rr2Mm(Gg!BbVv5Qq0Kk&FfZz9Tu4Oo-Ij%DdXx8Ss2Mm)Hh!BbWw6Qq0Ll*FfZAaUu4Op+Jj%DeYy8Ss3Nn)Hh$CcWw6Rr1Ll*Gg#AaUv5Pp+Jk&EeYy9Tt3Nn-Ii$CcXx7Rr1Mm(Gg#BbVv5Pq0Kk&EfZz9Tt4Oo-Ii%DdXx7Ss2Mm(Hh!BbVw6Qq0Kl*FfZzaUu4Oo+Jj%DdYy8Ss2Mn)Hh!BcWw6Qq1Ll*Ff#AaUu4Pp+Jj%EeYy8St3Nn)Hi$CcWw7Rr1Ll(Gg#AaVv5Pp+Kk&EeYz9Tt3No-Ii$CdXx7Rr2Mm(Gg!BbVv5Qq0Kk&FfZz9Tu4Oo-Ij%DdXx8Ss2Mm)Hh!BbWw6Qq0Ll*FYy8Tt3Nn)Ii$CcWx7Rr1Lm(Gg#AbVv5Pp0Kk&EeZz9Tt3Oo-Ii$DdXx7Rs2Mm(Gh!BbVv6Qq0Kk*FfZz9Uu4Oo-Jj%DdXy8Ss2Mn)Hh!BcWw6Qq1Ll*Ff#AaUu4Pp+Jj%EeYy8St3Nn)Hi$CcWw7Rr1Ll(Gg#AaVv5Pp+Kk&EeYz9Tt3No-Ii$CdXx7Rr2Mm(Gg!BbVv5Qq0Kk&FfZz9Tu4Oo-Ij%DdXx8Ss2Mm(Hh!BbVw6Qq0Kl*FfZzaUu4Oo+Jj%DdYy8Ss2Nn)Hh!CcWw6Qr1Ll*Fg#AaUu5Pp+Jj&EeYy8Tt3Nn)Ii$CcWx7Rr1Lm(Gg#AbVv5Pp0Kk&EeZz9Tt3Oo-Ii$DdXx7Rs2Mm(Gh!BbVv6Qq0Kk*FfZz9Uu4Oo-Jj%DdXyRr1Ll*Gg#AaUv5Pp+Jk&EeYy9Tt3Nn-Ii$CcXx7Rr1Mm(Gg#BbVv5Pq0Kk&EfZz9Tt4Oo-Ii%DdXx7Ss2Mm(Hh!BbVw6Qq0Kl*FfZzaUu4Oo+Jj%DdYy8Ss2Nn)Hh!CcWw6Qr1Ll*Fg#AaUu5Pp+Jj&EeYy8Tt3Nn)Ii$CcWx7Rr1Lm(Gg#AbVv5Pp0Kk&EeZz9Tt3Oo-Ii$DdXx7Rs2Mm(Gg!BbVv5Qq0Kk&FfZz9Tu4Oo-Ij%DdXx8Ss2Mm)Hh!BbWw6Qq0Ll*FfZAaUu4Op+Jj%DeYy8Ss3Nn)Hh$CcWw6Rr1Ll*Gg#AaUv5Pp+Jk&EeYy