承元（1207年十月十五至1211年三月初九）是日本的年号之一。后鸟羽上皇实施院政。这个时代的天皇是土御门天皇与顺德天皇。镰仓幕府之征夷大将军为源实朝；执权为北条义时。
以某下承式刚性吊杆系杆拱桥为实例，利用空间有限元程序对其空间稳定性进行分析。
Taking a through bridge with rigid suspender and tie-arch for example, the space stability is analyzed by means of finite element program.
在有限元分析的基础上，建立典型承压结构塑性载荷响应图谱。
Based on the finite element analysis, the plastic response chart of typical pressure bearing structures were built.
将知识库分级为元知识与领域知识，后者进一步分级为基础初步选型、基础埋深确定、桩型选择、承台选型等知识库。
The domain knowledge is divided into foundation scheme knowledge, buried depth calculation knowledge, pile style selection knowledge, slab selection knowledge and so on.
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