地质与勘探
地質與勘探
지질여감탐
GEOLOGY AND PROSPECTING
2003年
z2期
231-234
,共4页
软粘土%塑料板排水工法%固结系数%打设间距
軟粘土%塑料闆排水工法%固結繫數%打設間距
연점토%소료판배수공법%고결계수%타설간거
Reclaimed ground prefabricated vertical drain coefficient of consolidation drain spacing
塑料板排水工法广泛应用于软地基处理的工程中,在这种工法中如何评价粘土的固结系数,关系到最终沉降量的预测、工程费用的计算等重要问题.本研究用现场试验的方法,在吹填软粘土中打设了3种不同间距的塑料排水板,对分层沉降量进行了监测,并相应地用差分法对沉降量进行了数值预测.探讨了塑料排水板的间距对粘土固结系数的影响效果.
塑料闆排水工法廣汎應用于軟地基處理的工程中,在這種工法中如何評價粘土的固結繫數,關繫到最終沉降量的預測、工程費用的計算等重要問題.本研究用現場試驗的方法,在吹填軟粘土中打設瞭3種不同間距的塑料排水闆,對分層沉降量進行瞭鑑測,併相應地用差分法對沉降量進行瞭數值預測.探討瞭塑料排水闆的間距對粘土固結繫數的影響效果.
소료판배수공법엄범응용우연지기처리적공정중,재저충공법중여하평개점토적고결계수,관계도최종침강량적예측、공정비용적계산등중요문제.본연구용현장시험적방법,재취전연점토중타설료3충불동간거적소료배수판,대분층침강량진행료감측,병상응지용차분법대침강량진행료수치예측.탐토료소료배수판적간거대점토고결계수적영향효과.
In the analysis of consolidation of soft ground improved by means of prefabricated vertical drain(PD); horizontal consolidation of coefficient (ch) is one of the important parameters. There are many labora-tory tests conceming on this problem. In addition, some measurement -based analysis had been carried out aswell. However, the ch used to the PD method is still unsolved by these studies. Therefore, a series of field testswas conducted on an observation site of reclaimed ground. By changing the interval of drain spacing while keep-ing the loading and soil condition approximately same, the consolidation settlements of the reclaimed groundwere measured. Based on the observed results and numerical analysis results, this paper examines ch of re-claimed ground. And then, the effectiveness and the cost of ground improvement were examined from bothdrains spacing and pre -loading.
