汶川地震框架结构震害分析

发布时间：2018-03-28 17:50

本文选题：汶川地震　切入点：框架结构　出处：《世界地震工程》2016年04期

【摘要】：根据汶川地震之后对汶川县和都江堰市的考察结果,介绍了框架结构房屋在房屋结构体系、填充墙、楼梯、柱、梁、玻璃幕墙、吊顶、通风设备和突出屋面附属构件的震害特征,并为增强框架结构房屋防震减灾能力提出6点建议:(1)保证"强节点弱构件"的实现,节点核芯区要加密箍筋和混凝土要浇筑密实;(2)实现"强柱弱梁"的设计与施工控制,可以增大框架柱截面尺寸,加大纵筋及箍筋配筋率;(3)要加强填充墙与框架梁柱的连接构造措施,可以选用轻质填充墙与框架柔性连接;(4)限制框架柱的轴压比,确保框架柱的塑性变形能力和框架结构抗倒塌的能力;(5)要重视非结构构件与主体结构的连接构造,避免玻璃幕墙、吊顶和通风设备等坠落伤人;(6)出屋面小房间可以将框架柱延伸上去或者做成钢木轻型结构,以防"鞭端效应"造成的破坏;(7)采用隔震与消能减震设计来减轻框架结构的震害。
[Abstract]:According to Wenchuan after the earthquake in Wenchuan county and Dujiangyan City, the study results, this paper introduces the framework of housing in the housing structure, filling walls, stairs, columns, beams, glass curtain wall, ceiling, roof ventilation equipment damage characteristics and prominent accessory components, and to enhance the frame housing disaster reduction capacity put forward 6 proposals: (1) to ensure the realization of "strong joint and weak member", the core area of joints stirrups and concrete pouring should be compact; (2) the realization of "design and construction control of strong column and weak beam", can increase the section size of frame column, increasing the longitudinal reinforcement and stirrup ratio; (3) to strengthen the connection construction measures of filling wall and frame beam column, can be made of light filling wall and frame flexible connection; (4) limit column axial compression ratio, to ensure the capacity of plastic deformation and collapse resistance capacity of frame structure of frame column; (5) pay attention to non structural components and main structure. Avoid joint structure, glass curtain wall, ceiling and ventilation equipment falling injuries; (6) a small room can be the roof frame column extends up or made of wood and steel light structure, to prevent the "whip end effect" caused by the damage; (7) the isolation and energy dissipation to reduce the damage of the frame structure seismic design.

【作者单位】：武汉工程大学资源与土木工程学院;
【分类号】：TU352.1

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