初祖庵大殿木构架承重体系结构性能分析

Study on Structural Properties of Timber Frame Load-bearing System of the Chu Zu-an Temple

为科学指导初祖庵大殿的保护和修缮,以大殿木构架承重体系为原型建立整体有限元模型,对其进行正常使用条件下结构变形和受力分析。分析结果表明:屋盖翼角、明间后平槫和明间后屋盖位移较大,是结构薄弱部位;檩条最大位移出现在跨中,且以竖向位移为主;后上平槫跨中和端部弯矩较大,且其端部剪力较大;蜀柱截面小,受力大,易因木材强度较小引起承载力不足,直接影响结构的安全可靠性。研究结果将为后期的结构监测和保护提供科学依据和理论指导,同时为同类木结构的保护提供参考。

In order to provide scientific evidence for Cbu Zu-an temple＇ s conservation and repair, this paper established finite element numerical model of Chu Zu-an temple based on the timber frame bearing system, analyzes the structural deformation and stress of the normal use conditions. The results indicated that the roof cock, the back flat rafter and the roof of the back in the middle of the building with large displacement, and these are the weak parts of structure. The maximum displacement of purlin appears in the span and it is dominated by vertical displacement. The bending moment of the end of the cross-neutral end of the upper and middle part of the end is larger, and the shear of its end is larger. The Shu-Column section is smaller, but the force is larger, and the small strength of wood will cause insufficient on bearing capacity, which affects the safety of the structure performance directly. The conclusion will provide scientific basis and theoretical guidance for the later structural monitoring and protection of the Chu Zu-an temple, and can provide reference for the repair of similar timber structure at the same time.