建材世界
建材世界
건재세계
THE WORLD OF BUILDING MATERIALS
2014年
1期
83-88
,共6页
等效压缩模量%颗粒接触有效应力%结合水膜有效应力%表面张力收缩膜贡献有效应力
等效壓縮模量%顆粒接觸有效應力%結閤水膜有效應力%錶麵張力收縮膜貢獻有效應力
등효압축모량%과립접촉유효응력%결합수막유효응력%표면장력수축막공헌유효응력
the equivalent modulus of compression%particle contact effective stress%effective stress of combined water film%effective stress of the surface tension of contraction film contribution
提出了“土的压缩变形的变化只取决于有效应力的变化的观点是不成立的。自由水和孔隙气同样具有抗压能力，地基压缩变形应该用总应力计算。有效应力的实质是自由水和孔隙气没有抗剪能力。在抗剪极限状态，颗粒接触有效应力为法向压力，结合水膜和表面张力收缩膜贡献有效应力为法向拉力”。推出了非饱和土大气张力z方向时间应变率表达式。推出了抗剪极限状态非饱和土有效应力的大气张力通用公式。提出了渗流体的“等效压缩模量”的新概念。
提齣瞭“土的壓縮變形的變化隻取決于有效應力的變化的觀點是不成立的。自由水和孔隙氣同樣具有抗壓能力，地基壓縮變形應該用總應力計算。有效應力的實質是自由水和孔隙氣沒有抗剪能力。在抗剪極限狀態，顆粒接觸有效應力為法嚮壓力，結閤水膜和錶麵張力收縮膜貢獻有效應力為法嚮拉力”。推齣瞭非飽和土大氣張力z方嚮時間應變率錶達式。推齣瞭抗剪極限狀態非飽和土有效應力的大氣張力通用公式。提齣瞭滲流體的“等效壓縮模量”的新概唸。
제출료“토적압축변형적변화지취결우유효응력적변화적관점시불성립적。자유수화공극기동양구유항압능력，지기압축변형응해용총응력계산。유효응력적실질시자유수화공극기몰유항전능력。재항전겁한상태，과립접촉유효응력위법향압력，결합수막화표면장력수축막공헌유효응력위법향랍력”。추출료비포화토대기장력z방향시간응변솔표체식。추출료항전겁한상태비포화토유효응력적대기장력통용공식。제출료삼류체적“등효압축모량”적신개념。
This paper put forward “The point of view that changes of soil compression deformation is determined only by the change of effective stress is not set up.Free water and pore gas also has ability to work under pressure.The foundation compression deformation should use total stress calculation.The essence of effective stress is free water and pore gas no shear capacity.In shear limit state,particle contact effective stress is normal pressure,effective stress of combined water film and the surface tension of contraction film contribution is normal tension”.This paper introduced the z direction time strain rate expression of unsaturated soil atmosphere tension.This paper introduced the general for-mula of the atmosphere tension of effective stress of unsaturated soil when shear limit state.The new concept of equiva-lent modulus of compression of the seepage body is put forward.
