会善寺大殿斗拱足尺试件竖向加载试验研究

Experimental Study on the Dougong Specimens of Huishan Temple under Vertical Loading

以会善寺大雄宝殿柱间斗拱为研究对象,结合调研制作了1∶1的足尺模型试件,通过竖向单调加载试验,探讨了斗拱试件在竖向荷载作用下的变形能力、传力机理,得到了斗拱竖向承载的力学模型。结果表明:竖向荷载作用下,栌斗与头昂、泥道拱交汇处易发生剪切、承载破坏,为斗拱试件的薄弱部位。试验中斗拱试件极限承载力约为383 kN,残余变形约为22.3 mm,展示了斗拱的良好竖向承载和变形能力。

Dougong of Huishan Temple was studied in this paper and vertical monotonic tests were conducted on the full-scale specimens,which were design based on the real structural features.Deformation capacity and mechanical mechanism were evaluated and a mechanical model was obtained from the test results.It showed that the intersection joints among Ludou,Touang,and Nidaogong were the weak parts,where the shear failure and wood bearing failure were mostly found.The load-bearing capacity was of 383 kN and themaximum residual plastic deformation was of 22.3 mm;those demonstrated a decent vertical load-bearing and deformation capacity.