佳木斯大学学报（自然科学版）
佳木斯大學學報（自然科學版）
가목사대학학보（자연과학판）
JOURNAL OF JIAMUSI UNIVERSITY (NATURAL SCIENCE EDITION)
2013年
6期
838-841
,共4页
CFG桩%复合地基%数值分析%FLAC3D%桩间土加固
CFG樁%複閤地基%數值分析%FLAC3D%樁間土加固
CFG장%복합지기%수치분석%FLAC3D%장간토가고
CFG pile%composite ground%numerical analysis%FLAC3D%reinforcement of soil between piles
CFG桩复合地基近年来，已成功用于大型油罐基础的地基处理。本文以某大型油罐基础地基处理为背景，利用FLAC3 D有限差分软件建立CFG桩复合地基的多桩模型，讨论了褥垫层对CFG桩复合地基的影响，以及不同桩间距下、不同加固深度下的CFG复合地基的位移响应和桩-土荷载变化规律，提出了不同桩间距下的合理加固深度。结果表明，桩间土的加固可明显改善地基性质且存在临界加固深度。
CFG樁複閤地基近年來，已成功用于大型油罐基礎的地基處理。本文以某大型油罐基礎地基處理為揹景，利用FLAC3 D有限差分軟件建立CFG樁複閤地基的多樁模型，討論瞭褥墊層對CFG樁複閤地基的影響，以及不同樁間距下、不同加固深度下的CFG複閤地基的位移響應和樁-土荷載變化規律，提齣瞭不同樁間距下的閤理加固深度。結果錶明，樁間土的加固可明顯改善地基性質且存在臨界加固深度。
CFG장복합지기근년래，이성공용우대형유관기출적지기처리。본문이모대형유관기출지기처리위배경，이용FLAC3 D유한차분연건건립CFG장복합지기적다장모형，토론료욕점층대CFG장복합지기적영향，이급불동장간거하、불동가고심도하적CFG복합지기적위이향응화장-토하재변화규률，제출료불동장간거하적합리가고심도。결과표명，장간토적가고가명현개선지기성질차존재림계가고심도。
In recent years, the cement fly-ash gravel (CFG) piles have been successfully applied in the ground treatment of the large oil tank foundation .Based on the ground improvement of a large oil tank founda-tion, a simulation of CFG pile composite ground was achieved with FLAC 3D.The effect of the cushion thickness on CFG pile composite ground was discussed .The deformation of the composite ground and pile -soil stress ratio was also discussed in different spacing between adjacent piles or in different improvement depths , and a rational improvement depth was obtained .The results indicate that the reinforcement of soils between piles can improve the composite ground and there exists a critical improvement depth .
