反应谱法在变截面连续箱梁桥抗震计算中的应用

Application of Response Spectrum Method in Antiseismic Calculation of Continuous Box Girder Bridge with Variable Cross-section

以现阶段桥梁抗震规范为基础,对甘肃省某公路桥进行抗震计算,运用反应谱法对变截面连续梁桥进行抗震计算,通过计算软件Midas Civil软件,分别进行顺桥向E1、E2地震作用下桥梁地震反应分析及抗震验算,结果表明,该桥在E1、E2地震作用下顺桥向均能满足抗震规范要求,该桥计算结果可为其他公路桥梁抗震计算提供参考。

Taking the earthquake resistant code for current bridge as the basis, the antiseismic calculation is made on a highway bridge in Gansu province. The antiseismic calculation on the continuous box girder bridge with Variable cross - section is made by adopting the response spectrum method. The seismic response analysis on bridge and antiseismic checking calculation under the earthquake influence of E1, E2 of bridge in axial direction are made respectively through the calculation software Midas Civil. The bridge in axial direction under the earthquake influence of E1, E2 can meet the requirement of earthquake resistant code. The calculation result of the bridge can provide the reference for the antiseismie calculation of other highway bridges.