水泥搅拌桩有效桩长的确定.pdf

3 No. 3 2002 9 HYDRO-S IEN E AND ENGINEERING S p. 2002 曾友金, 章为民 ( , 210029) : , . , , , . : ; ; ; : TU 473. 1 : A : 1009- 640X( 2002) 03- 0014- 07 Determination of effective length of cement-mixed piles ZENG You-jin, ZHANG W i-min ( Nanj ing H ydraulic Research I nstitute, Nanj ing 2 10029, China) Abstract: According to th ultimat b aring capacity control m thod, th ff ctiv l ngth of a c m nt-mix d pil is calculat d w ith th lin ar lastic-plastic load transf r function. Influ nc factors of ff ctiv l ngth such as Poisson. s ratio of soil, co ffici nt of rigidity of pil , lastic modulus ratio of th bottom soil and surrounding soil, pil . s diam t r, sid ultimat displac m nt and top s ttl m nt of pil ar analyz d. It can b s n that th factors hav c rtain ff cts on th ff ctiv l ngth x c pt Poisson. s ratio of soil. Key words: ff ctiv l ngth; ultimat b aring capacity; load-transf r function; c m nt-mix d pil , [ 1- 11] . , , , . , [ 2] [5, 9, 11] , . : ) [ 3] . 20%, , [ 11] [ 12] . , ) , . [ 3] : , , , , , : 200 1- 11- 12 : ( 1976- ) , , , . 2 , : 15 [ 13] . , . . 1 桩顶荷载及沉降计算 - ( 1) , , , . : U , U m b ; K ; K ; P , S ; S, U 1 2 ; Q , S ; L . b b , , . ,