【摘要】 对汶川地震中部分大跨建筑的结构破坏性进行调研,并结合震时大跨结构成功抗震的案例分析。参照对比在震时出现的结构破坏和成功抵御地震的案例,对其中的结构影响因素进行归纳和经验教训总结,并结合国外的大跨建筑抗震经验,提出大跨建筑结构的抗震控制策略:宏观上的结构选型要采用整体性和刚性较好的轻型结构,室内采用防坠落式室内吊顶(非常重要);中观上结构材料以具有良好的延展性的钢材、以及无坠落危险的膜材为佳;微观层面结构链接节点可采用橡胶垫、弹簧等耗散地震能量的措施,同时要确保震时需要抵抗水平位移混凝土构件的配筋量。更多还原

【Abstract】 Parts of long-span structures destruction in Wenchuan earthquakes are investigated.Some successful anti-seismic cases are synchronously combined to be analyzed.This article suggests the long-span structures` anti-seismic control design strategy,based on the reference and comparison of the structures` breakages or the counter during earthquakes while the structural effect factors are generalized and the experience is summarized,also the foreign building seismic investigation is consulted.On the macro level,the structural lectotype should adopt light structure with preferable wholeness and structural efficiency,furthermore the hung ceilings should be processed by anti-fallen methods.On the middle level,the structural materials should be focused on the steel with predominant ductility and the fabric membranes with non-risk of fall harm.On the micro level,the structural link-nodes could utilize rubber inserts,spring-type damper which dissipate the seismic energy,as to be confirm that the anti-horizon displacement concrete components have adequate reinforcement assembly for anti-seism.更多还原