PSI - Issue 37

Pan Yu et al. / Procedia Structural Integrity 37 (2022) 706–713 Pan Yu / Structural Integrity Procedia 00 (2021) 000 – 000

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mortise and convex tenon, the CF joint contact with base without any fasteners. Therefore, the modeling and analysis methods of them are different because of difference between the heritage timber frame and modern structures. For example, a concrete or steel rigid frame model shown in Fig. 1 can be established directly by beam elements, only the section across, local coordinates or length of the beam elements may need to be revised, then the mechanical performance of it can be evaluated based the model of this rigid frame. However, it is difficult to establish the model of the heritage timber frame with MT joints and free-standing columns as shown in Fig. 2. Furthermore, some of these heritage Chinese timber buildings which have been in service for hundreds of years may be in danger in operational environment (Xie, 2020). Therefore, it is in urgent need of studying on the modeling method of heritage Chinese timber structures with loose MT joints for further evaluating the lateral performance of these structures.

N j

P j

M

j

j

E, I

i

N i

M i

P i

Figure 1 - concrete or steel rigid frame

Mortise-tenon connection

l t (Lenght)

b m

b b

b t

h m

h t

h b

(Height)

Mortise

Tenon

Beam

b c

h c

Column

Figure 2 - heritage timber frame with mortise-tenon joints