袋装砂井处理河滩相软土固结沉降研究  

Consolidation settlement study of alluvial flat soft clay with disposal of packed sand

作　　者：贾其军[1] 王晓谋[2] 袁怀宇[3] 

机构地区：[1]北方交通大学土木建筑工程学院,北京100044 [2]长安大学公路学院,陕西西安710064 [3]陕西省公路勘察设计院,陕西西安710068

出　　处：《中国公路学报》2003年第3期35-39,共5页China Journal of Highway and Transport

摘　　要：以河滩相软土为研究对象,利用沉降板、测斜管、孔隙水压计等测试仪器,选取有代表性的观测断面,进行了一年多的沉降与稳定观测。通过对观测数据进行整理与分析,推算出符合工程实际的最终沉降量、固结沉降量及地基平均固结度,进而从三个方面对袋装砂井加速河滩相软土固结效果进行了评价。同时提出了固结度参数β的参考值,对在河南省河滩相软土地基上修筑高等级公路具有重要的参考价值。Taking alluvial flat soft clay as research object and using settlement plates,deflection inclinometer and piezometer as testing apparatus ,the stability and settlement of representative sections had been observed for more than one year. Based on the observation data, the total settlement, consolidation settlement, the average degree of consolidation and its coefficientβ were calculated, so the effect of packed sand quicking up the consolidation of alluvial flat soft clay was evaluated in three aspect. It will be of great value to us in constructing the high grade highway on alluvial flat soft clay foundation in the future.

关 键 词：遵路工程 河滩相软土 沉降观测 袋装砂井 固结 

分 类 号：U416.1[交通运输工程—道路与铁道工程]