Seismic retrofit of Building
◆ Seismic Retrofit for Reinforced-concrete &
Steel structural buildings
- Seismic strengthening of a 3-story unreinforced masonry building involves the use of exterior steel braced frames and interior moment frames. The front façade remains intact due to historical preservation
-Seismic Safety on the UC Berkeley Campus
-seismic retrofit of the U.S. Department of Veterans Affairs Medical Center in San Diego
تدعيم واصلاح الأبنية والمنشآت الخرسانية والفولاذية بعد الزلزال
1- حالة قوة وشدة الزلزال اصغر من القوى التصميمية
2- حالة قوة وشدة الزلزال تساوي القوى التصميمية
3- حالة قوة وشدة الزلزال مدمرة واكبر من القوى التصميمية
- نوع الأضراار على البناء وامكانية الاصلاح والترميم والتدعيم
1 - حالة المرونة وقبل تشكل المفاصل اللدنة
2- حالة اللدونة وتشكل المفاصل
3- حالة التصدع والانهيار ومابعد اللدونة
- انواع الجمل المقاومة ومواد التدعيم وتأهيل الأبنية قبل الزلزال
1-زرع جدران قصية واطارات خرسانية
2-زرع عناصر فولاذية واطارات تكتيف وتسنيد المنشأ
3- زرع مخمدات زالزالية تخميد وامتصاص طاقة الزلزال
22. Seismic Safety on the UC Berkeley Campus
seismic retrofit of the U.S. Department of Veterans Affairs Medical
Center in San Diego
-بواسطة الخارجي الزلزالي التدعيم اواطارات او الدفعالخرسانة جدران
وغيرها معدنية مثلثية شبكية
الجملة تشارك زلزالية مخمدات ادخال امكانية حتى او
23.
24. 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
28. Steel braces as part of the 2003 seismic retrofit of the Civil
Engineering Building in Tohoku University
29.
30. ■ 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.
31. 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.