中文摘要：

为了准确地模拟接线路面特性，对其荷载一变形和损伤进行了分析，提出了接线路面板集中弹簧简化模型．基于此，采用SAP2000建立了某座全无缝桥梁动力计算模型．对该桥进行了模态分析和地震时程分析，并与对应连续梁桥进行了对比分析；同时还进行了桥长和接线路面刚度敏感性分析．研究结果表明：中低设防烈度地区，全无缝桥梁的地震响应只有连续梁桥的24％～35%，主桥处于弹性无损状态．可见，全无缝桥梁能大幅提升中低烈度地区公路中小桥梁的抗震性能．

英文摘要：

To accurately simulate the characteristics of continuously reinforced concrete approach pave- ment （CRCAP）, a simplified concentrated spring model was proposed according to the force-deformation curve and the damage level of the CRCAP. Based on this, a dynamic finite element model of a semi-integral fully jointless bridge （SFJB） was established with SAP2000. The Modal analysis and Time History analy- sis were carried out on both the SFJB and the continuous girder bridge （CGB） for comparison. The sensi- tivity analysis of seismic performance was also investigated. The results indicate that the seismic response of the SFJB is only 24~35 % of the CGB in the low seismic fortification intensity zone, which can greatly enhance the seismic resistance of small and medium bridges.