CAJ | 학술논문

以厦漳跨海大桥北汊南引桥为依托，采用有限元非线性时程分析方法，比较分析了铅芯橡胶支座和盆式橡胶支座对高烈度地区大跨径连续箱梁桥的抗震影响。研究结果表明：铅芯橡胶支座增加了结构在地震作用下的振动周期和主梁梁端位移，减小了固定墩的受力。相比盆式橡胶支座，铅芯橡胶支座可以使主梁梁端位移增加20％～200％，固定墩内力减小36％～80％。说明铅芯橡胶支座能够通过增加主梁位移达到减小桥墩受力的效果，隔震效果明显。该研究成果可为同类型桥梁的抗震设计提供参考。
이하장과해대교북차남인교위의탁，채용유한원비선성시정분석방법，비교분석료연심상효지좌화분식상효지좌대고열도지구대과경련속상량교적항진영향。연구결과표명：연심상효지좌증가료결구재지진작용하적진동주기화주량량단위이，감소료고정돈적수력。상비분식상효지좌，연심상효지좌가이사주량량단위이증가20％～200％，고정돈내력감소36％～80％。설명연심상효지좌능구통과증가주량위이체도감소교돈수력적효과，격진효과명현。해연구성과가위동류형교량적항진설계제공삼고。
Based on north south approach spans of Xiamen -zhangzhou cross-sea bridge by using the finite element nonlinear a-nalysis method, the seismic impact is compared between lead -rubber bearing and pot rubber bearing on the long span box girder bridges in high-intensity areas .The results show that the lead -rubber bearing can increase the vibration period and displacement of main beam in earthquake , reduce the force of fixed piers .Compared with pot rubber bearing , adopting lead-rubber bearing can in-crease the end displacement of main grider by 20%to 200%, meanwhile decrease internal force for fixed piers by 36%to 80%.The isolation effect is obvious that lead -rubber bearings can reduce the pier force by increasing the displacement of main beam .The re-search results provide a reference for the same type of bridge seismic design .