嘉峪关光化楼残损变形现状及抗震性能分析

中国木结构建筑是我国宝贵的物质文化遗产和文化瑰宝,具有悠久的文化历史。以嘉峪关光化楼为依托,对光化楼进行实地调研,分析光化楼主要残损变形。采用ANSYS软件建立考虑光化楼残损变形的三维有限元精细模型,并进行模态分析与时程分析。研究结果表明,光化楼主要残损变形为油饰脱落、墙体剥蚀开裂、柱偏移等,极个别柱产生较大偏移;光化楼刚度相对稳定,前20阶振型自振频率均在10Hz以内;光化楼动力放大系数与层间位移角均较小,仍具有良好的抗震减震性能。

Damaged Deformation Status and Seismic Performance Analysis of Guanghua Building in Jiayuguan

China''s wooden structure is a precious material cultural heritage and cultural treasure in China with a long cultural history. Based on the Jiayuguan Guanghua Building, Which is an ancient wooden structure that was built more than 500 years ago, this paper conducts a field survey of the Guanghua Building and judges the main damage and deformation of the Guanghua Building. Based on the damage and deformation of Guanghua Building, a three-dimensional finite element fine model considering the damage and deformation of Guanghua Building was established using ANSYS software, and modal analysis and time history analysis were performed. The following conclusions were obtained:The main damage deformations are oil decoration peeling off, wall peeling and cracking, and column displacement, among which very few columns have a large deviation; the stiffness of Guanghua Building is relatively stable, and the natural frequencies of the first 20 modes are within 10Hz; both the building''s dynamic amplification factor and the floor-to-floor displacement angle are low, which proves Guanghua Building still has good anti-seismic performance.