Design of glulam arched roof structures with steel joints

摘要

In the paper the design and construction problems of renovation of an old theatre roof are presented. The theatre was designed by Finnish architects A. Lindgren and V. Lonn and erected at the beginning of this century (1910...1913). At the end of the World War II it was bombed (1944) and partly burned down and then after 1.5 years of staying in ruins in 1945-50 it was restored (see Figure 1). Now after half a century, in 1995 owners of the theatre wanted to develop and to arrange new halls under the roof without changing the outside shape of the building. Consequently the roof trusses occupying the space under the roof had to be replaced by some other structural arrangement (see Figure 2).