6.1 thermal actions温度作用 ·basic concepts and action mechanism基本概念及作用原理 calculation of thermal stress?温度应力的计算 ·Statically determinate structure静定结构 ·No internal stress ·Free movement 由虚功原理计算 ·Statically indeterminate structure超静定结构 Internal stress induced ·Thermal effect:根据变形协调条件，按结构力学方法计算 的东理王大军 SHANDONG UNIVERSITY OF TECHNOLOGY
6.1 thermal actions 温度作用 • basic concepts and action mechanism基本概念及作用原理 ▫ calculation of thermal stress温度应力的计算 Statically determinate structure 静定结构 No internal stress Free movement 由虚功原理计算 Statically indeterminate structure 超静定结构 Internal stress induced Thermal effect：根据变形协调条件，按结构力学方法计算
6.1 thermal actions温度作用 。basic concepts and action mechanism基本概念及作用原理 o engineering measures工程处理措施 ·RC structure?混凝土结构 ·设伸缩缝 ·留后浇带 大￥ 伸缩缝 后浇带 ERSITY OF T元CHNOLOGY
6.1 thermal actions温度作用 • basic concepts and action mechanism 基本概念及作用原理 ▫ engineering measures工程处理措施 RC structure混凝土结构 设伸缩缝 留后浇带 伸缩缝 后浇带
6.1 thermal actions温度作用 ·basic concepts and action mechanism基本概念及作用原理 o engineering measures降低焊接应力和焊接变形的措施 ·Optimizing welding steps合理安排焊接次序 ·Multi-stage welding拆分多道焊缝 ·Inverse pre-bending施焊前，预加 分多道焊缝 工 预加反变形 焊接次序交替进行 山东理工大军 SHANDONG UNIVERSITY OF TECHNOLOGY
6.1 thermal actions 温度作用 • basic concepts and action mechanism 基本概念及作用原理 ▫ engineering measures 降低焊接应力和焊接变形的措施 Optimizing welding steps合理安排焊接次序 Multi-stage welding 拆分多道焊缝 Inverse pre-bending 施焊前，预加反向变形
6.2 deformation actions变形作用 ·basic concepts and action mechanism基本概念及作用原理 common deformation actions常见的变形作用 Static determination ·支座移动 静定作用 ·Differential settlements of foundations基础不均匀沉降 ·Creeping and shrink of RC structure混凝土结构的徐变与收缩 ·Forced assembly of members构件的强制装配 Statically indeterminate 超静定作用 Generally deformation is also a load.广义上，变形作用也是荷载 归东罪子大军 SHANDONG UNIVERSITY OF TECHNOLOGY
6.2 deformation actions变形作用 • basic concepts and action mechanism基本概念及作用原理 ▫ common deformation actions常见的变形作用 支座移动 Differential settlements of foundations 基础不均匀沉降 Creeping and shrink of RC structure 混凝土结构的徐变与收缩 Forced assembly of members 构件的强制装配 ▫ Generally deformation is also a load.广义上，变形作用也是荷载 Static determination 静定作用 Statically indeterminate 超静定作用