防灾减灾工程学报2025，Vol.45Issue(5)：1200-1211,12.DOI:10.13409/j.cnki.jdpme.20240724003
地铁车站自复位中柱性能及参数变化研究
Study on Performance and Parameter Variations of Self-centering Middle Columns in Metro Stations
摘要
Abstract
Based on the concept of seismic resilience,this study proposes a new middle column sys-tem,aiming to provide excellent seismic performance and self-centering capability for metro under-ground structures.Using ABAQUS software,the basic performance of the new columns,including their self-centering capability,horizontal deformation capacity,and shear bearing capacity,was simu-lated and analyzed.The effects of three parameter variations—initial prestress value,number of pre-stressing tendons,and column head size—on the performance of the new columns were further investi-gated.The results showed that compared to traditional consolidated columns,the new columns not on-ly demonstrated good self-centering capability but also had significant advantages in horizontal defor-mation and damage characteristics.Appropriately reducing the initial prestress value was beneficial for improving the self-centering capability of the new columns.Decreasing the number of prestressing ten-dons and increasing the column head size both enhanced the self-centering capability under low axial compression ratios,while increasing the tendon quantity and reducing the column head size were favor-able for improving the self-centering capability under high axial compression ratios.The effect of pa-rameter variation on the horizontal deformation capacity was evident only when the axial compression ratio was less than 0.7.Under the condition of this axial compression ratio,smaller initial prestress val-ues and a greater number of prestressing tendons resulted in enhanced deformation capacity of the new columns.The incorporation of a column head was beneficial for enhancing the deformation capacity of the new columns,but its size had no significant effect.The optimal combination was an initial pre-stress value of 500 MPa,a single row of prestressing tendons,and a column head radius of 0.2 m.Pa-rameter variations had little effect on the shear bearing capacity of the new columns.The research find-ings can provide valuable references for the further research and design of resilient seismic systems for metro underground structures.关键词
可恢复性/地铁车站/中柱/数值模拟/参数变化Key words
resilience/metro station/middle column/numerical simulation/parameter variation分类
建筑与水利引用本文复制引用
范智双,权登州,柴少波,张永坤,卜永红..地铁车站自复位中柱性能及参数变化研究[J].防灾减灾工程学报,2025,45(5):1200-1211,12.基金项目
国家自然科学基金项目(42172302)、陕西省自然科学基础研究计划(2025JC-YBMS-535)、陕西省重点研发计划(2025SF-YBXM-525,2025SF-YBXM-539)资助 （42172302）
