Topics on Micropiles in Japan

IWM 2003

Topics on Micropiles in Japan PWRI Collaboration Project with Private

Companies• Design and Construction Manual of Seismic

Retrofitting of Structural Foundation. Construction Example

• Seismic Retrofitting of Existing Water Service Tower. • Seismic Retrofitting of Structural Foundation.

Research Report• In-site Load Test of High Capacity Micropiles

foundation on mountain ground.• Field Loading Test on Micropile foundation

Regarding the Effect of Prestress.

PWRI Collaboration Project with Private Companies

Development of Seismic Retrofitting technology of structural foundation• Horizontal Loading Tests on Model

Foundations Retrofitted by Micropiles

• The centrifugal model test on pile group effect of the pile foundation reinforced by the Micropile

• Shaking table test of the existing foundation

reinforced with Micropiles

Design and construction manual

Construction Example(1) Seismic Retrofitting of Existing Water Service Tower. This paper reports its

first application to the seismic retrofitting of a reinforced concrete water service tower in Japan.

Construction Example(2) Seismic Retrofitting of Structural Foundation.

Seismic Retrofitting of Structural Foundation by using Batter pile.

Construction Example(2) Seismic Retrofitting of Structural Foundation.

Construction completion

Research Report (1) In-site Load Test of High Capacity Micropiles

Foundation on Mountain Ground

The main report is result of a couple of batter pile.

Research Report (2) Field Loading Test on Micropile foundation

Regarding the Effect of Prestress.