Transcription of 既設橋の耐震補強設計に関する技術資料 - PWRI
1 700 2012 11 4244 2012 11 * ** ** ** * ** ** ** technical Note of nilim No. 700 November 2012 technical Note of PWRI No. 4244 November 2012 technical Note on Seismic Retrofit Design of Existing Bridges Takashi TAMAKOSHI * Masahiro SHIRATO ** Jun-ichi HOSHIKUMA ** Junichi SAKAI ** Synopsis Key Words.
2 Road Bridge, Seismic Performance, Seismic Retrofit, Unseating Prevention Measures, Bearing Support, Reinforced Concrete Bridge Column * Head, Bridge and Structures Division, Road Department, nilim ** Senior Researcher, Bridge and Structures Division, Road Department, nilim ** Chief Researcher, Bridge and Structural Engineering Research Group, CAESAR, PWRI ** Senior Researcher, Bridge and Structural Engineering Research Group, CAESAR, PWRI Seismic retrofit design should be conducted in consideration of structural conditions of each existing bridge and the target seismic performance in the seismic retrofit for the bridge. It should be therefore noted that some of evaluation methods specified in Design Specifications for Highway Bridges are inapplicable to the seismic retrofit design as they are.
3 This technical note introduces the design approaches of the seismic retrofit for existing bridges. 1 2 4 7 12 20 21 - 1 - 1) 2)
4 24 2 24 2 - 2.
5 V 1) - 3 - 2), 3) - 4.
6 V 24 V 5 - 5 - V
7 - 6 - 24 V - 7 - 24 14 V 4) H14 V B A A A B 24 V 1) H24 V A 1)
8 2) H14 V H24 V H14 V H24 V A B H24 V H24 V - 8.
9 Mm H24 V (1) H24 V (2)
10 16 - 9 - H24 V H24 V (4) H24 V )
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