摘  要

本设计工程为秦皇岛某机械厂房2号厂房设计——24米双跨门式钢结构厂房，每跨各设置一 20t梁式吊车。主要依据《钢结构设计规范》GB50017－2003 和《门式刚架轻型房屋钢结构技术规程》CECS 102:2002 等国家规范，综合考虑设计工程的规模、跨度、高度及用途，依据“适用、经济、在可能 条件下注意美观”的原则，对各组成部分的选型、选材、连接和经济性作了比较，最终选 用单层门式钢架的结构形式。梁、柱节点为刚性连接的门式钢架具有结构简洁、刚度良好、 受力合理、使用空间大及施工方便等特点，便于工业化，商品化的制品生产，与轻型维护 材料相配套的轻型钢结构框架体系已广泛应用于建筑结构中，该单层门式刚架结构是以轻型焊接H型钢（变截面）作为主要承重骨架，用冷弯薄壁型钢（C型）做檩条、墙梁；以压型钢板做屋面、墙面；采用50mm玻璃棉作为保温隔热材料并适当设置支撑的一种轻型房屋结构体系；梁柱均采用 Q235 钢，10.9 级摩擦型高强螺栓连接，局部焊接采用 E43 型焊条，柱脚刚性连接，梁与 柱节点也刚性连接；屋面和墙面维护采用双层彩色聚苯乙烯夹芯板；另外特别注重了支撑设置、拉条设置，避免了一些常见的拉条设计错误。

关键词：轻型钢结构 门式刚架 内力分析 双层彩色聚苯乙烯夹芯板 节点

Abstract

The project is 78 meters in length and each 18-meter span seted one crane. The project designed  strictly  complies  with  the  relavant  stipulations  of  the  “CODE  FOR  DESIGN OF STEEL STRUCTURES (GB50017-2003)” and “TECHNICAL SPECIFICATION FOR STEEL STRUCTURE OF LIGHT-WEIGHT BUILDINGS WITH GABLED FRAMES (CECS102:2002)”, and some others. Synthesize the scale of the consideration design engineering and across a principle for span and use, according as" applying, economy, under the possible term attention beautifully", Connecting method, structure type and material of each part which consist of a light-weight steel villa are analyzed, then choose the construction form that use single layer a type steel. The beam, pillar node is a light steel construction frame system that rigid and copular a type steel a ware for having construction Simple, just degree goodly, suffering dint reasonablely, using space bigly and starting construction convenience etc. characteristics, and easy to industrialization, commercializing produce, thinking with light maintenance material the kit the already extensive applying in the building construction inside, the single-storey gabled structure is to light welding h-shaped steel (uniform) as the main load bearing frame, with cold-formed steel (type c) do Purlin beams and walls; to steel do roofing, wall; a 50mm glass wool as an insulation material and appropriate settings supported a light house in architecture.; we can choose the section of beam and columniation. Next, checking computations of stability calculation of the plane structure. The steel beam and column employs Q235 carbon structural steel. Connection bolts are high strength bolt of friction type with behavioral grade10.9. Common bolts are rough type made by Q235-B.F steel. Rod for manual welding usually adopts E43. Rigid connections apply to the column leg and the connection of column and beam adopts  hinged  connection.  The  metope  and  roofage  adopts  the  double-decked  colored polystyrene clamps the circuit board. Otherwise, it is analyzed that the forced state of the bracing system for a steel factor building under wind load, and the design of a bracing truss for a building with larger width. Avoid some errors in the design of brace, tension rod, and tension rod joints.

Keywords ： Lightweight  steel  structures;  gabled  frame;  the  internal  force  analyzes;  The double-decked colored polystyrene clamps the circuit board; joint

目   录

前言

1.1 国内外钢结构建筑的现状和发展前景------------------------------- 1

1.2 门式刚架特点及适用范围----------------------------------------- 1

第一章 基本资料和设计依据

一、工程概况------------------------------------------------------- 2

二、设计原始资料--------------------------------------------------- 2

三、设计内容和要求------------------------------------------------- 2

四、计算内容------------------------------------------------------- 2

五、图纸要求------------------------------------------------------- 3

第二章 厂房结构选型及布置

一、结构选型及方案论证--------------------------------------------- 3

第三章 建筑设计

一、平面设计------------------------------------------------------- 4

二、剖面设计------------------------------------------------------- 4

三、立面设计------------------------------------------------------- 5

四、构造设计------------------------------------------------------- 5

4.1 外墙----------------------------------------------------------- 5

4.2 外围护结构的保温设计------------------------------------------- 5

4.3 外围护结构的保温设计------------------------------------------- 5

4.4 散水构造------------------------------------------------------- 5

第四章 结构设计

一、檩条设计------------------------------------------------------- 6

1.1 荷载标准值（对水平投影面）------------------------------------- 6

1.2 截面选择------------------------------------------------------- 6

1.3 内力计算------------------------------------------------------- 7

1.4 强度验算------------------------------------------------------- 8

1.5 稳定性验算----------------------------------------------------- 8

1.6 挠度计算------------------------------------------------------- 9

二、吊车梁设计

2.1 吊车荷载计算--------------------------------------------------- 9

2.2 内力计算------------------------------------------------------- 9

2.3 截面特性------------------------------------------------------ 10

2.4 强度验算------------------------------------------------------ 10

2.5 稳定验算------------------------------------------------------ 11

2.6 挠度计算------------------------------------------------------ 11

三、刚架设计

3.1 荷载计算------------------------------------------------------ 12

3.2 各部分作用荷载------------------------------------------------ 13

3.3 截面及截面特性，初选梁、柱截面及截面特性---------------------- 13

3.4 刚架内力计算-------------------------------------------------- 14

3.5 刚架各计算截面内力标准值汇总表及内力组合表-------------------- 26

四、构件验算

4.1柱验算-------------------------------------------------------- 33

4.2梁验算-------------------------------------------------------- 37

五、节点设计

5.1 梁柱节点设计------------------------------------------------- 39

5.2 梁梁节点设计------------------------------------------------- 40

5.3 柱脚节点设计------------------------------------------------- 42

5.4 牛腿节点----------------------------------------------------- 43

六、墙梁设计

6.1 荷载计算----------------------------------------------------- 44

6.2 内力分析----------------------------------------------------- 44

6.3 截面选择与验算----------------------------------------------- 45

6.4 拉条计算----------------------------------------------------- 47

七、砖墙下基础梁的设计

7.1 纵向砖墙下基础梁的设计--------------------------------------- 47

7.2 山墙砖墙基础梁设计------------------------------------------- 48