Seismic Retrofit for Reinforced-concrete
& Steel structural buildings
Seismic strengthening of building
Equipped with base isolation and
or energy dissipation devices
Steel braces as part of the seismic retrofit of the Building
20. Seismic Safety on the UC Berkeley Campus
retrofit of the U.S. Department of Veterans Affairs Medicalseismic
Center in San Diego
-بواسطة الخارجي الزلزالي التدعيم اواطارات او الدفعالخرسانة جدران
وغيرها معدنية مثلثية شبكية
الجملة تشارك زلزالية مخمدات ادخال امكانية حتى او
21.
22. story office building with partially submerged parking is-Strengthening of the existing 3
upgrading the deficient steel braced frames and by shotcreting masonrybyaccomplished
shearwalls.
building involvesstory unreinforced masonry-Seismic strengthening of a 3
the use of exterior steel braced frames and interior moment frames. The
front façade remains intact due to historical preservation
26. Steel braces as part of the 2003 seismic retrofit of the Civil
Engineering Building in Tohoku University
27.
28. ■ Seismic Retrofit ■■■
◆ Seismic Retrofit for Reinforced-concrete & Steel
structural buildings;
1. Seismic Retrofit by Steel-
frame construction;
Reinforcing beams of both side of
column (horizontal / 2nd floor) by
steel rod.
Effect: It strengthens building
beams and increases viscosity and
durability.
↑: steel plate(Hiuchi) construction
2.Reinforcement for
beam-tips and column;
Jointing beams and columns
with steel bar and plate. Square
steel tube is jointed for current
column.
Effect: It increases durability of
the buildings at the earthquake.
3.Reinforcement by steel
beams;
Jointing beam and column with
steel plate.
Effect: It increases durability of
the buildings.
29. 4. Diagonal
reinforcement by steel
plate;
Support diagonally by steel
beams.
Effect: It increases durability
of the buildings.
5.Reinforcement for column-foot;
Jointing steel bars and inserting chemical anchor for column-foot.
Solidfied by cement.
Effect: It increases durability and weakens trembles of the buildings at
the earthquake.
1.Jointing steel bars and
inserting chemical
anchor.
2.Surrounded by
wooden plates.
3.Solidfied by cement.