型钢混凝土高架车站竖向往复荷载作用下抗震性能试验研究  

Experimental study on seismic performance of steel reinforced concrete elevated station under vertical reversed loading

作　　者：沈婷[1] 蒋晔[1] 江胜学[1] 周臻[2] Shen Ting;Jiang Ye;Jiang Sheng-xue;Zhou Zhen(China Railway Siyuan Survey and Design Group Co.Ltd,Wuhan 430063,China;Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education,Southeast University,Nanjing 210096,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063 [2]东南大学土木工程学院,江苏南京210096

出　　处：《工程抗震与加固改造》2022年第6期106-112,共7页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金资助(51878150);国家重点研发计划(2018YFC0705700)。

摘　　要：本文以现有高架车站为原型,结合型钢混凝土及“桥建合一”的优势,设计并加工了一个单榀双柱悬挑型钢混凝土框架的缩尺试件。采用同步液压千斤顶进行了竖向单调静力加载试验及低周往复加载试验,研究了型钢混凝土车站的破坏机制、滞回特性、延性、刚度、耗能及残余变形性能。结果表明:型钢混凝土高架车站满足正常使用极限状态要求,车站在竖向地震下具有较高的安全储备;框架最终破坏时未出现上下贯通的受拉裂缝,表现出良好的变形能力和抗震性能;内置型钢有效约束了核心混凝土,延缓了高架车站的损伤。A scale elevated station with one double span and column cantilever steel reinforced concrete frame is designed and processed, taking the existing elevated station as the prototype and combining with the advantages of steel reinforced concrete and “bridge-construction integration”. The failure mechanism, hysteretic characteristics, ductility, stiffness, energy dissipation and residual deformation of steel reinforced concrete station are studied through the vertical monotonic and static loading test and low cycle loading test. The results show that the steel reinforced concrete elevated station meets the requirements of standard, which is safety enough under the vertical earthquakes. When the frame is finally destroyed, the frame without crack from the top to the bottom of the beam shows good deformation capacity and seismic performance. The steel in the frame can effectively restrain the core concrete and delay the damage of elevated station.

关 键 词：型钢混凝土 高架车站 竖向地震 拟静力 抗震性能 

分 类 号：TU317.1[建筑科学—结构工程]