钢结构的焊接变形与应力分析
摘要
近年来,随着我国的工业发展,钢结构工程因其结构性能好、结构组织均匀、强度高、弹性模量高、塑性和韧性好,适于承受冲击和地震荷载、要求施工速度快、节能环保、便于机械化生产和工业化程度高等很多优越条件,因此钢结构工程在建筑领域被广泛应用。
本课题主要对H型钢焊接变形与应力进行研究,主要内容包括H型钢结构概述、H型钢结构焊接工艺、H型钢结构焊接应力与变形分析、典型H型钢结构焊接生产工艺等,本文通过研究分析H钢结构焊接应力与变形的类型及原因,以指导钢结构的生产及应用。
关键词:钢结构,焊接变形,应力,强度
STEEL STRUCTURE WELDING DEFORMATION
AND STRESS ANALYSI
ABSTRACT
In recent years, along with China's industrial development, steel structure engineering because of its structure performance is good, anization uniformity, high strength, high modulus of elasticity, plasticity and toughness, suitable for bear impact and the seismic load, construction speed and facilitate the mechanization of manufacturing and higher degree industrialization superior conditions, so many steel structure engineering in architecture has been widely used. But, can't deny, steel structure still exist defects and hidden trouble. Steel structure welding process is the welding deformation and the welding stress wait for blemish. Steel structure welding process is actually in welding after heating and cooling local area, but due to the solidification process of non-uniform temperature field, causing welding uneven expansion and contraction, thereby internally generated welding welding stress and cause the welding deformation. This paper mainly analyzes the steel structure types and reasons of the welding deformation and stress elimination.
KEY WORDS: steel structure, The welding deformation, Stress, Strength
目录
中文摘要 Ⅰ
ABSTRACT Ⅱ
目录 Ⅲ
前言 1
第1章钢结构的组成及发展 3
第2章 H型钢概述 6
H型钢优点、适用范围 6
H型钢的优点 6
H型钢的适用范围 6
H型钢的产品规格分类、表示方法 7
H型钢结构对连接的要求 7
H型钢生产方式 7
H型钢生产工艺 8
第3章 H型钢结构焊接工艺及变形 10
H型钢焊接工艺设计 10
H型钢结构特点 10
H型钢的制作要点 10
焊接过程中的难点 10
产生变形的原因 11
焊接工艺分析 11
熔透焊的难点 11
焊接工艺方案 11
焊接工艺方法 12
焊接变形控制与矫正 12
采取的预防方法和产生的效果 13
第4章 H型钢结构焊接应力与变形分析 15
型钢焊接变形种类及影响因素 15
型钢的应力与变形 16
纵向残余应力σx 16
横向残余应力σy 17
厚度
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