To improve efficiency for an usage ratio of a steel material by stiffening a steel sheet pile in simple structure to change a destruction mode of the steel sheet pile from a bend yielding type to a shear yielding type and by allowing an overall cross section of the steel sheet pile to be effectively resistive with respect to an in-plane shear load in earthquake, and furthermore, improve work efficiency required for welding and shorten a construction period by eliminating joint parts, subjected to welding, which extend in a depth direction of steel sheet piles, to reduce difficult welding work.
A steel sheet pile underground wall structure is provided which comprises a steel sheet pile 1A. Between an upper floor slab 2A and a lower floor slab 2B, a first stiffener 15 extending in a depth direction is connected, and the steel sheet pile 1A is stiffened by connecting the first stiffener 15 within an area of a distance, which is obtained by a predetermined calculation formula, to be stiffened from positions of upper and lower end portions in the depth direction between the upper floor slab 2A and the lower floor slab 2B.
NAKAYAMA HIROAKI
| JP2011157781A | 2011-08-18 | |||
| JP2008267069A | 2008-11-06 | |||
| JP2009062774A | 2009-03-26 | |||
| JP2002013134A | 2002-01-18 | |||
| JPH09125417A | 1997-05-13 |
| WO2010092782A1 | 2010-08-19 | |||
| WO2010092788A1 | 2010-08-19 |
Tadashi Takahashi
Sumio Tanai
Hiroshi Masui
Tomoo Katsumata