CAJ | 학술논문

为了研究预制拼装桥墩与整体现浇桥墩抗震性能方面的差异，以常见城市高架桥为工程背景，制作完成了3个缩尺比为1∶3．5的试件模型，进行了整体现浇桥墩和无粘结预应力钢绞线预制拼装桥墩拟静力循环加载试验。通过给墩顶施加强迫往复位移，从5个方面研究了预制拼装桥墩与整体现浇桥墩抗震性能的差别，并对试验结果进行了纤维模型计算分析。结果表明：无粘结预应力预制拼装混凝土桥墩混凝土破坏轻微，耗能能力较弱，残余位移小，适合低烈度地区；无粘结预应力带耗能钢筋预制拼装混凝土桥墩墩底混凝土有明显压碎，耗能能力强，残余位移相对于钢筋混凝土现浇桥墩较小，适合中高烈度地区。
위료연구예제병장교돈여정체현요교돈항진성능방면적차이，이상견성시고가교위공정배경，제작완성료3개축척비위1∶3．5적시건모형，진행료정체현요교돈화무점결예응력강교선예제병장교돈의정력순배가재시험。통과급돈정시가강박왕복위이，종5개방면연구료예제병장교돈여정체현요교돈항진성능적차별，병대시험결과진행료섬유모형계산분석。결과표명：무점결예응력예제병장혼응토교돈혼응토파배경미，모능능력교약，잔여위이소，괄합저열도지구；무점결예응력대모능강근예제병장혼응토교돈돈저혼응토유명현압쇄，모능능력강，잔여위이상대우강근혼응토현요교돈교소，괄합중고열도지구。
In order to study the difference of seismic behavior of precast segmental bridge piers and integral cast in‐situ bridge piers ,three 1∶3 .5 scale specimens were fabricated according to the urban viaduct bridge practice . The integral cast in‐situ and unbonded prestress precast segmental bridge pier specimens w ere used for quasi static cyclic loading test . T he seismic behavior differences of precast segmental bridge pier and integral cast in‐situ bridge pier were investigated in five aspects through imposing cyclic displacement on the column top .The test results were also compared with fiber model calculation results . The results show that the unbonded prestressing precast segmental concrete piers have minor damage , lower energy dissipation ,little residual displacement ,and are fitted for low earthquake intensity area .The unbonded prestressing precast segmental concrete piers with energy dissipation bars show obvious concrete crush ,higher energy dissipation ,relatively lower residual displacement compared with monolithic reinforced steel concrete piers ,and are fitted for moderate to high earthquake intensity area .