高层建筑结构设计第6章.pptxVIP

Chapter 6 Other Loads Thermal load Deformation load Frozen-heave load Blasting load Pre-stress Braking load;6.1 Thermal load;6.1 Thermal load;6.1 Thermal load;6.1 Thermal load;6.1 Thermal load;6.2 Deformation load;6.2 Deformation load;6.2 Deformation load;三门峡重力坝研究表明： 温度 内水压力 自重 外水压力; 三峡总公司副总经理曹广晶： 温度控制是三峡大坝混凝土质量控制的重点和难点, 也是保证三峡大坝不出现危害性裂缝的关键。;凝土裂缝（按照原因）;1、大体积混凝土水化热引起的裂缝;2、塑性收缩引起的裂缝;3、混凝土干缩引起的裂缝;4、碱集料引起的裂缝;5、温度裂缝;;;r3=100mm;6、结构基础引起的裂缝;6、结构基础引起的裂缝;7、钢筋腐蚀引起的裂缝;8、载荷引起的裂缝;8、载荷引起的裂缝;8、载荷引起的裂缝;8、载荷引起的裂缝;8、载荷引起的裂缝;6.2 Deformation load;6.2 Deformation load;6.2 Deformation load;6.2 Deformation load;6.2 Deformation load;6.2 Deformation load;Main causes: When environmental temperature drops to the freezing temperature of soil that contains water, pore water in the soil freezes into ice, and the loose soil particles cements together to form frozen soil. Seasonal frozen soil foundation in the process of freezing and melting, tends to produce frozen heaving and melting, excessive deformation of freezing lead to structure damage and destruction.;水平冻胀力;;6.4 Explosive blasting load ; 动力作用下地下洞室围岩动态破坏规律;;6.4 Explosive blasting load ;6.4 Explosive blasting load ;6.4 Explosive blasting load ;6.4 Pre-stress ;6.4 Pre-stress ;6.4 Pre-stress ;6.4 Pre-stress ;6.4 Pre-stress ;6.5 Braking load ;6.5 Braking load ;6.6 Shock load ;6.6 Shock load ;6.6 Shock load;6.7 Centrifugal load (离心力）