水利水电科技进展
水利水電科技進展
수이수전과기진전
ADVANCES IN SCIENCE AND TECHNOLOGY OF WATER RESOURCES
2013年
5期
65-68
,共4页
高液限土%掺砂改良%加州承载比%掺砂量%浸水时间
高液限土%摻砂改良%加州承載比%摻砂量%浸水時間
고액한토%참사개량%가주승재비%참사량%침수시간
high liquid limit soil%soil improvement with sand%California bearing ratio%sand content%immersion time
为确定云罗高速公路沿线的高液限土改良方案，通过不同掺砂比例的颗粒分析试验、相对密度试验、液塑限试验、击实试验和室内加州承载比( CBR)试验，对掺砂前后高液限土的颗粒级配分布，掺砂高液限粉土和高液限黏土的承载比影响因素，如掺砂量、浸水时间对CBR值的影响规律等进行了试验研究。结果表明：粗颗粒质量分数越高，摩擦力越大，黏聚力越小，水敏感性越差；影响土体CBR值的主要因素是粗颗粒质量分数，其次为浸水时间。
為確定雲囉高速公路沿線的高液限土改良方案，通過不同摻砂比例的顆粒分析試驗、相對密度試驗、液塑限試驗、擊實試驗和室內加州承載比( CBR)試驗，對摻砂前後高液限土的顆粒級配分佈，摻砂高液限粉土和高液限黏土的承載比影響因素，如摻砂量、浸水時間對CBR值的影響規律等進行瞭試驗研究。結果錶明：粗顆粒質量分數越高，摩抆力越大，黏聚力越小，水敏感性越差；影響土體CBR值的主要因素是粗顆粒質量分數，其次為浸水時間。
위학정운라고속공로연선적고액한토개량방안，통과불동참사비례적과립분석시험、상대밀도시험、액소한시험、격실시험화실내가주승재비( CBR)시험，대참사전후고액한토적과립급배분포，참사고액한분토화고액한점토적승재비영향인소，여참사량、침수시간대CBR치적영향규률등진행료시험연구。결과표명：조과립질량분수월고，마찰력월대，점취력월소，수민감성월차；영향토체CBR치적주요인소시조과립질량분수，기차위침수시간。
In order to determine the improvement scheme of high liquid limit soil along the Yunluo expressway, the particle size distributions of the high liquid limit soil with or without sand were analyzed based on the grain size analysis tests, relative density tests, liquid and plastic limits tests, compaction and indoor California bearing ratio( CBR) tests for different sand proportions. The impact factors with obvious regional features for the bearing ratios of high liquid limit silt mixed with sand and high liquid limit clay were investigated. The influences of sand content and immersion time on the CBR values were summarized and some useful conclusions were drawn in the study. With a greater mass fraction of coarse particles, the friction force and the cohesion force were found to be increased and decreased respectively, and the water sensitivity became poor. The mass fraction of coarse particles is the main impact factor on CBR values, and the immersion time is the secondary.
