火电厂主厂房纵向框架结构的抗震性能试验研究  

Test and Study on Anti-seismic Properties of Longitudinal Frame Structures of Main Power House in Thermal Power Plants

作　　者：林娜[1] 王社良[1] 史庆轩[1] 文良谟[1] 

机构地区：[1]西北电力设计院,西安市710032

出　　处：《电力建设》2002年第12期13-17,共5页Electric Power Construction

摘　　要：为了探讨主厂房纵向框架结构抗震性能 ,采取有效的补强措施 ,按 8∶1制作了火电厂主厂房纵向框架结构模型 ,进行了模拟动力试验。试验以电液伺服加载器模拟地震作用下的试验加载系统 ,由计算机按矩阵方程式(2 )发出的施加位移量指令进行控制 ,并完成试验数据的采集、整理工作。试验结果表明 :(1)在EL -centro地震波作用下 ,结构的屈服顺序为 :剪力墙根部—梁的端部—柱的根部 ,且结构的大部分抗震作用将由剪力墙承担 ,因此剪力墙的屈服强度对结构的承载能力和变形影响很大。 (2 )在加速度峰值 4m/s2 时 ,剪力墙根部裂缝开裂得最为严重。在随后的几个阶段中 ,随着加速度的增大 ,荷载的增幅仅约为 15 % ,而结构位移的增幅却高达约 2 0 0 %。For the purpose of inquisition into the anti-seismic properties of the longitudinal frame structures of the main power house and effective reinforcement measures to be taken, a model of the longitudinal frame structures of the main power house in the thermal power plant has been produced in a scale of 8:1, on which a simulated dynamic test was carried out. During the test the test loading system is the electrohydraulic loader to simulate the seismic action, the computer gave out the orders of displacement to be applied according to the matrix equation (2) for control and completed the acquisition and collection of the test data. The test results show: (1) Under the action of the EL-centro seismic wave the yield sequence of the structures is the root of shearing wall - end of beams - root of columns, while the shearing wall functions as bearing of the most of anti-seismic action of the structures. Therefore, the yield strength of the shearing wall has a great effect on the bearing capability and deformation of the structures. (2) At the peak acceleration of 4 m/s 2 the root of the shearing wall is cracked the most seriously. In the several following stages with the increase of the acceleration the amplitude of the load increase is only about 15%, but the amplitude of the displacement increase of the structures reaches up to 200%. [

关 键 词：高强度混凝土 纵向框架结构 抗震性能 抗震构造措施 

分 类 号：TU973+.16[建筑科学—结构工程]