邀山阁游客流量控制研究

邀山阁是一座4层砖石结构楼阁,目前西北角墙体倾斜严重且墙体、石柱存在竖向裂缝。基于保护邀山阁的需要,应用等效体积单元(RVE)进行墙体的有限元分析,通过调整弹性模量和优化有限元模型来模拟砌体带裂缝时的工作状态;在应力值及其变化值比较大的关键部位选取了26个控制点,进行应力包络分析;在合理的安全系数和游客荷载最不利工况下,得到了邀山阁游客的合理控制数量。本研究将有益于古建筑的长期保护和合理开发利用。

Study on Rational Control of Pedestrian Flow of Yaoshange Pavilion

Yaoshange is a four-storey masonry structure.The wall at northwest corner of the building inclines obviously with vertical cracks in the wall and the stone columns at present.On the basis of the research of protection technology for Yaoshange pavilion,a large-scale masonry wall is studied using the proposed representative volume element in this paper.Firstly,the elastic modulus is defined as independent variable function and the optimization analysis of masonry model is performed for masonry structure in crack state.Secondly,26 stress control points are picked out and the stress envelope analysis is done with different load cases.Finally,the reasonable result for pedestrian flow control under the worst pedestrian load and rational safety factor is achieved.It proves that the research has great significance for permanent protection and rational development of ancient architectures.