Page 491 - Advanced Design Examples of Seismic Retrofit of Structures

434 Advanced Design Examples of Seismic Retrofit of Structures

(A-I) (B-I) (C-I)

(A-II) (B-II) (C-II)

(A-III) (B-III) (C-III)

(A-IV) (B-IV) (C-IV)
FIG. 6.32 Wall specimens for static cyclic tests (dimensions in cm) [35]. (A-I) URA-WO. (B-I)
URA-LW. (C-I) URA-DW. (A-II) SMRA-WO. (B-II) SMRA-LW. (C-II) SMRA-DW. (A-III)
SSRA-WO. (B-III) SSRA-LW. (C-III) SSRA-DW. (A-IV) CWRA-WO. (B-IV) CWRA-LW.
(C-IV) CWRA-DW.

maintain symmetry and prevent eccentricity of the walls with respect to
in-plane axis.
The details of through-wall connections used in methods i and ii are shown
in Fig. 6.33. These connections are key in providing the thick double-wythe
adobe walls integrity while experiencing severe ground motions. If the 8mm
connection rods are extended less than the whole wall’s thickness and are
not anchored at the opposite face of the walls, they can only interlock some
adobe blocks, and hence their efficiency would decrease.
Fig. 6.34 shows the necessary steps of retrofitting adobe walls by steel wire
mesh. As can be seen, this method does not require shotcreting or placing any
form of mortar in order to increase the strength and stiffness of the retrofit ele-
ments. However, in order to prevent steel corrosion and invasion to the esthetics
of the walls, mud-straw mortar or other similar coatings can be added to the