PSI - Issue 11

Giorgio Frunzio et al. / Procedia Structural Integrity 11 (2018) 153–160

160

Prof. Ing. Giorgio Frunzio, Ing. Luciana Di Gennaro 00 (2018) 000–000

8

6. Conclusions

In conclusion, a detailing analysis shows the considerable capacity increase obtained, in terms of deformations and strength, after the restoration works with the wood-wood technique. The following table shows verification results in every condition studied:

Table 2. Verifications results

DECKING

COMPOSED SECTION

CROSS BEAM

M (Nmm)

T (N)

u istG (mm)

u istQ (mm)

M (Nmm)

T (N)

conditio n

τ

τ s

σ s

σ 2

σ 1

connecti on NONE

configur ation

stifness

5,2430 10,6880 1,36E+07 1,43E+04 53,5779 8,8483

-

1,59E+07 1,36E+04 10,3855 0,3694

1 PRE

FINITE 2,5440 5,1880 1,63E+07 1,57E+04 1,7252 10,4640 2,4997 7,58E+06 7,93E+03 4,9420 0,2155 FINITE 2,3120 4,4520 1,69E+07 1,61E+04 0,4060 9,6382 2,2245 6,74E+06 7,35E+03 4,3919 0,1997

2 PRE

3 POST

Placing the reader at the configuration 2, where the ancient wooden elements are poorly connected, and comparing it with the post-intervention status (configuration 3), the capacity increase of structure and of the principal wooden elements is given by the following table:

Table 3. Capacity increase values

DECKING

COMPOSED SECTION CROSS BEAM

u istG (mm)

u istQ (mm)

τ

τ s

σ s

σ 2

σ 1

9,12% 14,19% 76,46% 7,89%

11,01%

11,13% 7,30%

CAPACITY INCREASE

To conclude, the proposed intervention is considered valid from all points of view as it achieves a capacity increase of the structure, also in terms of improving the "work ratio" of the structural materials, respecting the history and the nature of ancient wooden structures of considerable historical value.

References

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