水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2014年
5期
23-29
,共7页
玄武岩残积红土%收缩特性%干密度%含水率
玄武巖殘積紅土%收縮特性%榦密度%含水率
현무암잔적홍토%수축특성%간밀도%함수솔
residual soil of basalt%shrinkage characteristics%dry density%water content
为了研究土体收缩对土体开裂或者建筑物沉降的影响，通过四种不同干密度、两种不同含水率的原状残积红土与重塑土，采用收缩对比特性试验，结合收缩曲线和收缩指标拟合图分析玄武岩残积红土的收缩特性。结果表明：玄武岩残积红土的收缩与初始含水率、干密度有一定关系，且残积土失水收缩的过程也可分成四个阶段；不同含水率对应的收缩性指标均不一样，且收缩性指标与干密度关系几乎接近直线变化；玄武岩的收缩特性是由内因和外因共同作用的结果，并依据双电层理论来分析其内部收缩水分的迁移。研究结果为玄武岩残积红土用于工程实践提供参考。
為瞭研究土體收縮對土體開裂或者建築物沉降的影響，通過四種不同榦密度、兩種不同含水率的原狀殘積紅土與重塑土，採用收縮對比特性試驗，結閤收縮麯線和收縮指標擬閤圖分析玄武巖殘積紅土的收縮特性。結果錶明：玄武巖殘積紅土的收縮與初始含水率、榦密度有一定關繫，且殘積土失水收縮的過程也可分成四箇階段；不同含水率對應的收縮性指標均不一樣，且收縮性指標與榦密度關繫幾乎接近直線變化；玄武巖的收縮特性是由內因和外因共同作用的結果，併依據雙電層理論來分析其內部收縮水分的遷移。研究結果為玄武巖殘積紅土用于工程實踐提供參攷。
위료연구토체수축대토체개렬혹자건축물침강적영향，통과사충불동간밀도、량충불동함수솔적원상잔적홍토여중소토，채용수축대비특성시험，결합수축곡선화수축지표의합도분석현무암잔적홍토적수축특성。결과표명：현무암잔적홍토적수축여초시함수솔、간밀도유일정관계，차잔적토실수수축적과정야가분성사개계단；불동함수솔대응적수축성지표균불일양，차수축성지표여간밀도관계궤호접근직선변화；현무암적수축특성시유내인화외인공동작용적결과，병의거쌍전층이론래분석기내부수축수분적천이。연구결과위현무암잔적홍토용우공정실천제공삼고。
In order to study the influence of soil shrinkage on soil cracking and building settlement ,undisturbed and re-molded residual soil of four different dry density and two different water content were selected for the shrinkage comparison tests .The fitting chart of the contraction curve and shrinkage index obtained from the tests were adopted to analyse the shrinkage characteristics of basalt residual soil .The results indicate that the shrinkage of the residual soil of basalt has a certain relationship with the initial water content and dry density , and the shrinkage process can be divided into four stages ;different water content corresponds to different shrinkage index ,and they are almost in a linear relationship ;the shrinkage characteristics of basalt is the result of the cooperation of internal and external causes based on the analysis of the migration of internal shrinkage water using double electric layer theory .These results will provide theoretical support for the engineering application of basalt residual soil .
