中文摘要：

牌坊是用以旌表和标识的建筑，形态为在其上设有牌匾的门形物。历史文献与建构逻辑显示，在衡门上加“表”、加“轼”形成了牌坊的前身。以此为基础，为了适应表达的需求。改“表”为“牌”形成了所谓的牌坊。从形式上看，旌表功能的实现对于牌坊竖向格局的演变具有重大影响。

英文摘要：

The memorial archway, with a plaque on the portal, is a construction for Conferring honors and identifying.According to the historical documents and construction logic, Equilibrium door plus ＂table＂ and ＂power＂ was the predecessor of the memorial archway. On this basis, In order to make it easier to refer to, the name of ＂table＂ was replaced by ＂brand＂ and then evolved into the now-called ＂memorial archway＂. The function of conferring honors have a significant impact on the evolution of the vertical structure form of the memorial archway.