21m跨门式刚架钢结构毕业设计计算书

宁波方舟彩钢公司轻钢结构厂房设计摘 要本设计是单层双跨轻钢结构工业厂房，采纳门式刚架结构：每跨 21 米，每跨中都设有一台 16 吨、A3 级桥式吊车。设计主要依据《钢结构设计法律规范》（GB50017—2025）和《门式刚架轻型房屋钢结构技术规程》（CECS102：2025）等国家法律规范。确定刚架平面布置后，先进行各种的荷载标准值计算，利用 PKPM 软件对估选梁、柱截面进行内力分析及组合，忽略地震荷载等因素的影响。在此基础上确定梁、柱的截面，并且利用位移法求出在荷载组合作用下的结构内力（弯矩、剪力、轴力），验算了其平面内外的稳定性。梁柱均采纳 Q235 钢，8.8 级和 10.9 级摩擦型高强螺栓连接，局部焊接采纳 E43 型焊条。在计算内力组合中，只选用了一种最不利的组合，最安全的结果计算。此外还进行了地基基础的计算，由于厂房处的地质条件较好，故采纳了安全的柱下独立基础的设计方案。完成了梁、柱和房屋墙面檩条等构件的内力和截面的计算，及绘制了建筑和结构施工图纸。关键词：轻型钢结构、门式刚架、桥式吊车、内力分析、位移法 、独立基础Design to light steel structural building of Ningbo Fangzhou colour steel companyAbstractThe design to the industrial factory building of steel construction adopts portal frame structure: Each span is 21 m and consists of 16 tons ,bridge type crane of A3 grade.The design is mainly according to the criterion of “CODE ROR DESIGN OF STEEL STRUCTURES” （ GB50017—2025 ） and “TECHNICAL SPECIFICATION FOR STEEL STRUCTURE OF LIGHT-WEIGHT BUILDINGS WITH GABLE FRAMES”（CECS102：2025）etc. After decided the plane arrangement of frame,representative value of load is first caculated. The internal force is analyzed and combined in PKPM so as to choose the section of beam and column and neglectes the factor that earthquake is on the influence of loading etc. Based on these analysis, the section of beam and columniation is decided. Then the vibrate cycle is calculated by the peak-displacement method for structural internal force (bending moment,shear...