中文摘要：

为了对金陵大报恩寺南北两块御碑遗址进行科学保护,首先通过有限元模拟对南北御碑遗址的现状结构性能进行分析,找出其在正常使用和地震作用时存在的安全隐患;然后根据计算分析结果及整体设计要求提出增设隔震支座的保护技术方案,采用有限元模拟计算对南北两块御碑遗址在增设隔震支座后的结构性能进行分析。计算结果表明：带有御碑的北碑的第一阶自振频率约为不带御碑的南碑的0.087;地震作用下,带有御碑的北碑最有可能破坏的部位是御碑,而不带御碑的南碑最有可能破坏的部位是龟趺头部。施加隔震支座后,南北两块御碑遗址结构的振动频率、最大主拉应力和最大主压应力均明显减小,在7度罕遇地震的情况下均不会发生破坏。研究结果对石碑的结构保护工程研究有参考价值。

英文摘要：

In order to scientifically preserve two culturally important imperial stelae,specifically,the north stela and the south stela in Jinling Dabaoen Temple,first the structural performance of these stelae were analyzed by using ANSYS,a type of engineering simulation software. The structural safety issues were investigated under normal conditions and under earthquake conditions. Based on simulation results,a conservation plan is laid out.Adding isolation bearings under the stelae is suggested. The structural performances of the two stelae after adding the isolation bearings were also analyzed by ANSYS. The results showed that the first natural frequency of the north stela（ i. e.,the imperial stela） was 0. 087 times of that of the south stela（ lacking the royal stela）. Under the earthquake conditions,the imperial stela on the northern site was most likely to be damaged. In the case of the southern stela,the tortoise head was most likely to be damaged first. After installation of bearings,the natural frequencies and the maximum tension and compression stresses of the two stela decreased significantly and became immune to damage even in a seventh degree earthquake. The study provides information about the structural analysis and conservation of stelae.