摘要
现场和室内试验的实测数据表明,对于高路堤而言,填土压实度过高,会带来如下负面影响:引起能耗大幅度增加,施工成本加大;对于细粒土,堤坡和堤脚更易吸水膨胀而失稳;降低埋深较浅的软弱地基的抗挤出稳定性;对于含水量较大(超过最佳含水量)的土,填土密实度超过临界密实度会破坏土的结构,使土强度降低。强调了填土"适度压实"的重要性。
The data obtained from the field trial and the laboratory test indicate that so far as high road-embankment, fill soil overcompacted would bring the following negative influences： Compaction energy and construction cost raise by a big margin. Slope of embankment and foot of embankment are easy to fail owing to swelling. Resistance to lateral deformation of shallow soft foundation decreases. For fill soil with water content exceeding its optimal water content, if its density exceeds the corresponding critical density, soil structure will be destroyed, and soil strength will reduce. The importance of proper compaction of soil is emphasized.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2009年第6期81-85,共5页
Journal of Wuhan University of Technology
基金
交通部西部交通建设科技攻关重点项目(200531874010)
山西省交通厅科技项目(99-10)
深圳市地质勘察局和深圳星河房地产开发有限公司联合科技项目(XHLG-SF-200701)
关键词
高路堤
过度压实
沉降
稳定性
强度
high road-embankment
over-compaction
settlement
stabilities
strength
