【摘要】 为了研究钢筋混凝土空心桥墩的抗震性能及影响因素,对5个较大比例的钢筋混凝土空心桥墩进行了水平低周往复加载试验,评价了其整体抗震性能,并分析了配筋率、轴压比、箍筋间距对桥墩承载能力、延性、刚度等抗震性能的影响。研究发现:钢筋混凝土空心桥墩抗震性能良好,配筋率、轴压比、箍筋间距对其的影响符合一般钢筋混凝土理论,空心桥墩大大减少了材料,可以安全应用到工程中。更多还原

【Abstract】 In order to further study the seismic behavior of reinforced concrete hollow bridge columns and its influencial factors,five reinforced concrete hollow bridge columns models with larger ratios were built and tested up to failure under the combined action of constant axial load and reversed cyclic lateral load.The aim is to evaluate seismic performances of all the five models.The concerned influencial factors inspected include longitudinal reinforcement ratio,spiral reinforcement ratio,axial load ratio,and seismic performances having effects such as failure mode,hysteretic behavior,load-carrying capacity and ductility.Analysis on the experimental results indicates that the anti-seismic performance of reinforced concrete hollow bridge columns is,excellent and the influences of the factors above mentioned obey the theory of reinforcement concrete.With such hollow pier in engineering,material can be saved dramtically,while enough security is achieved.更多还原