中文摘要：

针对高烈度区矮墩在地震中易发生脆性剪切破坏问题，结合《公路桥梁抗震设计细则（JTG／TB20-01-2008）》，提出了含矮墩桥梁抗震设计对策。以高烈度区某两跨简支预应力混凝土T梁桥为例，分别提出了减隔震技术、多柱墩设计、采用复合短柱（FRP或钢套管）或高强度抗剪箍筋等具体方案和建议。利用专业MIDAS有限元软件建立减隔震、多柱墩设计方案数值分析模型，比较了在E2地震作用下各个设计方案中桥墩及桩基础纵、横向最大受力情况。结果表明，采用减隔震设计或多柱墩设计方案可有效降低矮墩及基础的地震需求，改善矮墩及基础在强震作用下的受力性能，适用于高烈度区矮墩桥梁的抗震设计。上述方案主要供设计人员在抗震概念设计阶段选用，以切实提高含矮墩桥梁抗震能力。

英文摘要：

Aimed at the short bridge piers that are vulnerable to brittle shear failure in high earthquake intensity zones, the seismic design countermeasures for bridges with short piers was put forward combined with Guidelines for Seismic Design of Highway Bridges （ JTG/T B02 - 01--2008 ）. Based on a designed simple two-span prestressed concrete T-beam bridge located in a high earthquake intensity zone, the specific schemes and suggestions, including seismic isolation technology, multi-column pier design, composite short column （FRP or steel tube） or high strength transverse reinforcement, were proposed respectively. By using the numerical analysis model for seismic isolation and multi-column pier design scheme established by special finite element software MIDAS, the maximum longitudinal and lateral loads of the bridge piers and pile foundations of different designs under E2 earthquake excitation were compared. It is found that the seismic demand of short piers and foundations could be decreased significantly for the bridges by using seismic isolation design or multi-column pier design suitable for seismic design of bridge with short piers in high earthquake intensity zones, and the mechanical behaviors of short piers and foundations under strong earthquake could be improved. The proposed design schemes could be selected by designers in the seismic concept design stage to improve the seismic performance of the bridges with short piers.