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为研究双壁钢箱混凝土组合墩柱(DSCB墩柱)的抗震性能,对11个DSCB墩柱试件进行了双向拟静力试验,考虑了加载模式、钢板厚度、轴压比、长细比、截面长宽比等主要因素对DSCB墩柱抗震性能的影响.给出了试件的主要损伤演化过程和破坏模式,并从滞回曲线、骨架曲线、延性和耗能能力等方面对试验结果进行了分析.结果表明:水平双向加载下,DSCB墩柱一个方向的损伤劣化会加剧另一个方向的损伤;DSCB墩柱在水平双向荷载作用下,具有良好的强度、延性和耗能能力,能够满足强震区高墩桥梁的抗震要求.该研究可为DSCB墩柱在强震地区高墩桥梁中的应用提供依据.
In order to study the seismic behavior of double-wall steel-concrete composite piers (DSCB pier), 11 DSCB pier specimens were subjected to bidirectional quasi-static tests. The loading modes, plate thickness, axial compression ratio, slenderness ratio , The aspect ratio of the section on the seismic performance of the DSCB piers, the main damage evolution process and failure mode of the specimen are given, and the test results from the hysteresis curve, the skeleton curve, ductility and energy dissipation capacity The results show that under the horizontal bidirectional loading, the deterioration of one direction of DSCB piers will aggravate the damage in the other direction. The DSCB pier has good strength, ductility and energy dissipation capacity under horizontal bidirectional loading. Which can meet the seismic requirements of high pier in strong earthquake area.This study can provide basis for the application of DSCB pier in high pier with strong earthquake.