石油化工企业地脚螺栓设计参数取值的规定.doc

1 总则1.0.1 为了统一石油化工企业土建工程中地脚螺栓设计参数的取值，特制定本规定。1.0.2 本规定适用于钢框架、钢管架、钢支架及钢平台的柱脚地脚了螺（C级）设计参数的取值。1.0.3 本规定引用的标准和规范： a） 普通螺纹基本尺寸（GB196-81）； b） 1型六角螺母-C级（GB41-86）； c） 平垫圈-C级（GB95-85）； d） 钢结构设计规范（GBJ17-88）； e） 混凝土结构设计规范（GBJ10-98）。2 设计参数2.0.1 地脚螺栓的设计参数应按表2.0.1取值： 表2.0.1 地脚螺栓设计参数取值表地脚螺栓直径螺距P有效直径de有效面积Ae抗拉承载力设计值N（KN）螺母重每个垫圈重每个螺杆重每延米d（mm）（mm）（mm）（mm）Q235钢16Mn钢（kg）（kg）（kg）101.508.592758.08.1210.440.0110.0030.62121.7510.358284.311.8015.170.0160.0060.89（14）2.0012.1236115.416.1620.770.0250.0081.21162.0014.1236156.721.9428.210.0340.0111.58（18）2.5015.6545192.526.9534.650.0440.0142.00202.5017.6545244.834.2744.060.0620.0162.47（22）2.5019.6545303.442.4854.610.0760.0182.99243.0021.1854352.549.3563.450.1120.0313.55（27）3.0024.1854459.464.3282.690.1680.0394.49303.5026.7163560.678.48100.910.2340.0515.55（33）3.5029.7163693.697.10124.850.2800.0716.71364.0032.2472816.7114.34147.010.3710.0877.99（39）4.0035.2472975.8136.61175.640.1269.37424.5037.77811121.0156.94201.780.5990.20010.88（45）4.5040.77811306.0182.84235.080.24312.49485.0043.30901473.0206.20265.140.9570.28414.21（52）5.0047.30901758.0246.12316.441.1000.31916.68565.5050.83992030.0284.20365.401.4200.44319.35（60）5.5054.83992362.0330.68425.160.47722.21646.0058.37082676.0374.64481.681.9120.51325.27（68）6.0062.37083055.0427.70549.900.55028.53726.0066.37083460.0484.40622.800.58831.99（76）6.0070.37083889.0544.46700.020.70935.64806.0074.37084344.0608.16781.920.90239.49（85）6.0079.37084948.0692.70890.640.94244.58906.0084.37085591.0782.741006.381.21249.98（95）6.0089.37086273.0878.221129.141.25955.681006.0094.37086995.0979.301259.101.65461.70 注：括号内的地脚螺栓，尽可能不采用。 表中螺距系按国标GB196-81普通螺纹基本尺寸查得，如图示： 地脚螺栓有效面积Ae= 地脚螺栓抗拉承载力设计值N=Aef f（地脚螺栓抗拉强度设计值）=140N/mm2（Q235钢） f（地脚螺栓抗拉强度设计值）=180N/mm2（16Mn钢）2.0.2 地脚螺栓伸出基础面长度（H），（基础顶面至地脚螺栓顶的距离），应符合下列公式要求（图2.0.2）： 单螺母垫圈 双螺母及垫圈图2.0.2 地脚螺栓伸出基础面长度 a) 单螺母及垫圈 Hh+1.5d (2.0.2-1) b) 双螺母及垫圈 Hh+2.3d (2.0.2-2)式中 H-地脚螺栓伸出基础面长度（mm）； h-按工程要求确定（mm）； d-地脚螺栓直径（mm）。2.0.3 Q235钢地脚螺栓连接尺寸、锚固长度及细部尺寸，可按表2.0.3取值。 表2.0.3 Q235钢地脚螺栓连接尺寸、锚固长度及细部尺寸表地脚螺栓直径d（mm）连接尺寸锚固长度及细部尺寸单螺母双螺母锚固长度（mm）锚板尺寸abab基础混凝土的强度等级为ct(mm)(mm)(mm)(mm)C15C20C15C20C15C20(mm)(mm)20457560905004002245756595550440245080701006004802750807510567554030558580110750600335590851208256603660959012590072039651009513010007804270105100135105084063050514020457511010514011259006755401402048801201101501200960720575200205285125120160130010407806252002056901301301701400112084067020020609513514018015001200900720240256410014515019516001280960770240256810515016020517001360102081528030721101551702151800144010808652803076115160180225190015201140910320308012016519023520001600120096035040851301802002502125170012751020350409014019021026022501800135010804004095150200220270237519001425114045045100160210230280250020001500120050045 注：锚固长度除中国石油化工总公司行业标准中有规定外，其他按表中数值采用，抗震设防区的锚固长度L，应按表列5d（、型）；3d（型）。2.0.4 16Mn钢地脚螺栓连接尺寸锚固长度及细部尺寸,可按表2.0.4取值。 表2.0.4 16Mn钢地脚螺栓连接尺寸、锚固长度及细部尺寸表地脚螺栓直径d（mm）连接尺寸锚固长度及细部尺寸单螺母双螺母锚固长度（mm）锚板尺寸abab基础混凝土的强度等级为ct(mm)(mm)(mm)(mm)C15C20C15C20C15C20(mm)(mm)20457560906005002245756595660550245080701007206002750807510581067530558580110900750335590851209906253660959012510809003965100951301170100042701051001351260105075563014020457511010514013501125810675140204880120110150144012008657202002052851251201601560130093578020020569013013017016801400101084020020609513514018018001500108090024025641001451501951920160011509602402568105150160205204017001225102028030721101551702152160180013001080280307611516018022522801900137011403203080120165190235240020001440120035040851301802002502550212515301275350409014019021026027002250162013504004095150200220270285023751710142545045100160210230280300025001800150050045 注：锚固长度除中国石油化工总公司行业标准中有规定外，其他按表中数值采用，抗震设防区的锚固长度L，应按表列5d（、型）；3d（型）。附录A 1型六角螺母-C级 表A 1型六角螺母-C级（GB41-86）地脚螺栓直径dmme（mm）s（mm）m（mm）地脚螺栓直径d（mm）e（mm）s（mm）m（mm）1017.6169.52745.24124.71219.91812.23050.94626.41422.82113.93660.85531.51626.12415.94272.06534.91829.62716.94882.67548.92033.03018.75693.68545.92237.33420.264104.99552.42439.63622.3 注:表中数值s、m为最大值,e为最小值。附录B 平垫-C级 表B 平垫圈-C级(GB95-85)地脚螺栓直径d(mm)内径d1(mm)外径d2(mm)厚度t(mm)地脚螺栓直径d(mm)内径d1(mm)外径d2(mm)厚度t(mm)1011202.04548858.01213.5242.54852928.01415.5282.55256988.01617.5303.0566210510.01