| 摘要 |
PROBLEM TO BE SOLVED: To optimize joining force of a steel shell footing and an RC pile. SOLUTION: A reinforced concrete pile anchoring through-hole 34 is arranged in the steel shell footing 30, and an annular non slip steel plate 11 is arranged on an inner wall surface 35 of the through-hole 34. The thickness t(mm) of the non slip steel plate 11 is set so as to satisfy an expression ; Qu =π*d<SP>2</SP>*σ<SB>ck</SB>, an expression ; Qub =α*n*π*(d)*t*σ<SB>ck</SB>and an expression ; Qub > Qu. In the expression, Qu is yield strength of a reinforced concrete pile, Qub is yield strength of the dislocation preventive steel plate, (d) is a radius (mm) of the reinforced concrete pile,σ<SB>ck</SB>is design reference strength (N/mm<SP>2</SP>) of concrete,αis a correction factor (is normally set to 6), and (n) is the stage number of the non slip steel plate. COPYRIGHT: (C)2009,JPO&INPIT
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