2.2 Live load on floor and roof 1.Live load on floor of residential building民用建筑楼面活荷载 Reduction on nominal value: The most widely used reduction methods are semi-empirical. ·Code《建筑结构荷载规范》GB50009-2012 表5.1.2活荷载按楼层的折减系数 墙、柱、基础计算戴面 2-3 4~5 6-8 9-20 >20 以上的层数 计算戴面以上各楼层活 1.00 0.85 0.70 0.65 0.60 0.55 荷载总和的折减系数 (0.90) 注：当楼面梁的从属面积超过25时，应采用括号内的系数。 长理子大军 UNIVERSITY OF TECHNOLOGY
2.2 Live load on floor and roof 1. Live load on floor of residential building民用建筑楼面活荷载 ▫ Reduction on nominal value: The most widely used reduction methods are semi-empirical. Code 《建筑结构荷载规范》GB50009-2012
2.2 Live load on floor and roof 2. Live load on floor of industrial building工业建筑楼面活荷载 ▣Equivalent uniformly distributed load等效均布活荷载is adopted to represent the local load due to equipment,pipeline,transportation and movable partition walls. No matter in any cases,the coefficients of combination value and frequent value should not be less than 0.7,and the value of quasi-permanent coefficient value should not be less than 0.6. 归东理子大军 SHANDONG UNIVERSITY OF TECHNOLOGY
2.2 Live load on floor and roof 2. Live load on floor of industrial building工业建筑楼面活荷载 ▫ Equivalent uniformly distributed load等效均布活荷载 is adopted to represent the local load due to equipment, pipeline, transportation and movable partition walls. ▫ No matter in any cases, the coefficients of combination value and frequent value should not be less than 0.7, and the value of quasi-permanent coefficient value should not be less than 0.6
2.2 Live load on floor and roof 2.Live load on floor of industrial building.工业建筑楼面活荷载 Equivalent uniformly distributed load on floor of industrial building 筑楼面等效均布活荷载 ·According to Appendix D in Code《建筑结构荷载规范》GB50009-2012。 表D0.11金工车间楼面均布活荷栽 标准值(kN/m) 表D.01-2位器收表生产车同面均布 序 板 次梁（助） 组合值嫉透值准水久 代表性 价 板跨 板跨 系数系数 慎系数 机床 梁间距架可距 序 值系数 型号 1.2m2.0m 1.2m22.0m 代表性设香H05研奢肌 CW6180. D40型及G209量领级机 一类 Q32夏透被抛老机 金工 22.014.0 14.0 1a.0 9.0 1.00 0.95 0.85 X53K.X63W B690.M1080 较大光学收器 代表推没备50A精 235A 1 装配 床，方能T其显微愤 归东理工大军 SHANDONG UNIVERSITY OF TECHNOLOGY
2.2 Live load on floor and roof 2. Live load on floor of industrial building工业建筑楼面活荷载 ▫ Equivalent uniformly distributed load on floor of industrial building工业建 筑楼面等效均布活荷载 According to Appendix D in Code 《建筑结构荷载规范》GB50009-2012
2.2 Live load on floor and roof 2.Live load on floor of industrial building工业建筑楼面活荷载 Operating load and staircase load操作荷载及楼梯荷载 The operating load of the industrial building floor(including the workbench) without equipment area,including the dead weight of operators,general tools, scattered raw materials and finished products,can be considered according to the uniformly distributed live load.The characteristic value is generally 2.0kN/m2。 The characteristic values of staircase load in manufacturing room can be determined according to practice and it should not be less than 3.5k N/m2. 归东理子大军 SHANDONG UNIVERSITY OF TECHNOLOGY
2.2 Live load on floor and roof 2. Live load on floor of industrial building工业建筑楼面活荷载 ▫ Operating load and staircase load 操作荷载及楼梯荷载 The operating load of the industrial building floor (including the workbench) without equipment area, including the dead weight of operators, general tools, scattered raw materials and finished products, can be considered according to the uniformly distributed live load. The characteristic value is generally 2.0𝑘𝑘 𝑁𝑁⁄𝑚𝑚2 。 The characteristic values of staircase load in manufacturing room can be determined according to practice and it should not be less than 3.5𝑘𝑘 𝑁𝑁⁄𝑚𝑚2
2.2 Live load on floor and roof 3.Live load on floor of industrial building.工业建筑楼面活荷载 Determination 1.The equivalent uniformly distributed live load on floor,deformation and cracks can be obtained by the principle of equality. 2.Equivalent uniformly distributed live load in regions. 3.The equivalent uniformly distributed live load in continuous beam and slab can be obtained by simplification of simple beam and slab. 的东理王大军 SHANDONG UNIVERSITY OF TECHNOLOGY
2.2 Live load on floor and roof 3. Live load on floor of industrial building工业建筑楼面活荷载 ▫ Determination 1. The equivalent uniformly distributed live load on floor, deformation and cracks can be obtained by the principle of equality. 2. Equivalent uniformly distributed live load in regions. 3. The equivalent uniformly distributed live load in continuous beam and slab can be obtained by simplification of simple beam and slab