填砂路基,sand embankment
1)sand embankment填砂路基
1.Research purposes: Thesand embankment has been growing concern in high class highway engineering construction over plain area to solve the difficult problem of high quality subgrade filling absence.研究目的:为解决优质路基填料日益匮乏的难题,填砂路基在我国冲积平原缺土富砂地区高等级公路建设中受到重视,其边坡稳定性是填砂路基设计与施工的控制要素之一。
2.To study the stability of naturalsand embankment slope covered with cohesive soil layer,the mode and the mechanism ofsand embankment slope failure were analyzed.为了研究粘性包边土层与砂填料所共同构成的填砂路基边坡的稳定性,分析了填砂路基的破坏模式与破坏机理,并通过模型试验的结果得到了滑动面位置。
英文短句/例句
1.Study on Stability of Sand-filled Embankment Slope with Cover Layer包边填砂路基边坡稳定性计算方法研究
2.Vibration compacting water treatment method in reinforced hydraulic fill sand roadbed foundation application振动水冲密实法在加固处理吹填砂路基基础中的应用
3.The application of griddle dispart fill sand method in the examination of the superhighway roadbed筛分灌砂法在高速公路路基填筑检测中的应用
4.Application of aeolian sand fillers in freeway foundation projects浅述风积砂填料在高速公路路基工程中的应用
5.Numerical Simulation Analysis about Filling Expressway Base with Sand Soil砂土填筑高速公路路基过程中的数值模拟及其分析
6.PRACTICE OF UPWARDS DRIFT HDRAULIC FILL MINING IN WUSHAN COPPER MINE武山铜矿上向进路水砂充填采矿法生产实践
7.Dynamic Characteristic Analysis of Earthquake Vibratory Load for Road Structure of Filled-Sand and Clay Wrapping地震荷载作用下包边填砂路堤动力特性分析
8.Study on Vibroflotation of Silty Fine Sands Without Additional Backfill Materials;无填料振冲法在粉细砂地基中的试验研究
9.Dynamic Compaction Treatment Technology of Throw Fill Foundation with Super-size Sandstone Rubble超大粒径砂岩块石抛填地基强夯处理技术
10.Demonstration and selection of pretreatment program of blowing sand and backfill for soft clay foundation吹砂回填软土地基预处理方案的论证与选取
11.Application of high vacuum drubbing(HVD) to dredger sild filled ground高真空击密在粉砂吹填土浅地基处理中的应用
12.Numerical Simulation and Construction Technology of Super-large Foundation Excavation Dewatering in Hydraulic Fill Sand Area吹填砂地区超大基坑降水数值模拟与施工技术
13.Bored Pile Foundation Reinforcement Technology in Tunnel Silt-filled Caverns隧道粉砂层充填溶腔钻孔桩地基加固施工技术
parision of deaking fill soil foundation and loam foundation with sand pile砂石桩法处理杂填土与黏性土地基的比较
15.Discussion of the Detection Methods on Backfilled Ground with Red Sandstone Fragments Treated by Dynamic Consolidation强夯处理红砂岩碎(块)石填土地基检测方法探讨
16.Experimental Researches on Engineering Behaviors of Rockfill Materials in Rock-filled Highway Roadbed;高速公路填石路基填石料工程特性试验研究
17.QUALITY CONTROL OF ROADBED FILLING CONSTRUCTION OF THE LU-QIAN EXPRESSWAY六潜高速公路路基填筑施工质量控制
18.Quality supervision points on roadbed of highway浅谈高速公路路基填筑质量监理要点
相关短句/例句
sand-filled subgrade填砂路堤
1.Analysis on construction technology control ofsand-filled subgrade浅析填砂路堤施工工艺控制
3)hydraulic fill sand ground吹填砂地基
1.Experimental research on treatinghydraulic fill sand ground with plastic draining plate;塑料排水板处理吹填砂地基的试验研究
4)roadbase backfill路基回填
1.Analiysising to physical mechanics property,particle composition,chemical analysis of iron tailings,theoretical inference and necessary bench test and comercial test,the reliabitity has been proved by theoretical and practice on road surface material,insteading riversand concrete,androadbase backfill material,as technology dates of application.通过对铁尾矿物理力学性质、颗粒组成、化学成分分析、理论推断和必要的实验室及小规模工业试验,证明铁尾矿在路面材料、替代河砂混凝土和路基回填料等方面应用的可靠性和技术要求。
5)filling roadbed填筑路基
1.Through practice of filling the roadbed construction of section II on Cen Wu highway in Guangxi Province, this paper explains the construction technology and method offilling roadbed with sand high liquid clay.通过广西岑梧高速公路二标段路基填筑的施工实践,阐述了采用含砂高液限黏土填筑路基的施工工艺方法。
6)subgrade filling路基填筑
1.On the quality control of the expansive soil improved by limesubgrade filling;石灰改良膨胀土路基填筑质量控制浅析
2.The influences of cycles of freezing in winter and thawing in spring andsubgrade filling on 3~# landslide are analyzed with numerical method.(2)高含水滑坡的冬冻春融及路基填筑影响分析。
3.In order to ensure filling quality of the subgrade,enhance integrity stability of the subgrade,it accordes to detailed investment and combines with earth work test,provides scheme of adopting strong decomposed rock to getsubgrade filling,and gets filling technology test,gets complete success,accumulates subgrade construction experiences of the mountain area expressway.为了保证路基的填筑质量,增强路基的整体稳定性,通过详细调查并结合土工试验,提出采用强风化岩进行路基填筑方案,并进行填筑工艺试验,取得了圆满成功,积累了山区高速公路路基施工经验。
延伸阅读
路基填土压实采取分层填土,分层夯压的路堤,以达到足够的密实度,从而提高路堤的稳定性和坚固性,保证车辆运行平稳,避免因长年沉落而恶化运营条件。经过压实的路堤,一般线路要求通车时即可行每小时40~60公里以上的速度。土的含水量对压实程度有很大影响。同样的土质,在同样夯压条件下,含水量不同,填土密度(用干容重уd表示)也不同。含水量w与уd间的关系曲线称为击实曲线(见图)。从图中可看出,当含水量增加时,开始时土的密度相应增加,当含水量达到某一特征含水量w0时,密度增到最大值у。此后随着含水量增加而密度逐渐减小。此特征含水量称为最佳含水量,相应的最大密度у称为最佳密度。填土的最佳密度和最佳含水量可用击实仪按规定的击锤重量、落锤距离和锤击次数,用不同的含水量反复试验而得。常用的击实仪采用"普氏标准"(锤重2.51公斤,落高30.48厘米,锤击面直径5.08厘米,试筒直径10.12厘米,试筒高11.65厘米,分三层击实,每层击25次)。高速公路要求填土压实的密度较大,英国公路协会规定有较高标准击实仪。世界各国对于路基填土压实的密度均有不同的规定。中国铁路对旧线土质路堤填土密度进行调查结果表明,路堤基床(路基面至其下 1.2米范围内为基床)密度为最佳密度的84~93%;基床以下为最佳密度的75~84%(此种百分数称为压实系数)。中国铁路对填筑路堤要求的压实系数,基床表层(基床上部 0.5米范围内)为0.95,基床底层(基床下部0.7米范围内)为0.90;基床以下不浸水部分为0.85,浸水部分为0.90。中国公路建筑要求对一般地区,在路堤表面下0~0.8米间,要求压实系数不小于0.95,0.8米以下不小于0.90。为保证路堤夯压的密度,要求填筑时土的含水量应等于或接近最佳含水量,当含水量超过规定时,施工中需要采取措施。夯压机具及夯压方法对压实质量及工效的影响较大,80年代有夯打、辗压和振动三类夯压机具。经验证明,采用重型轮胎压路机、振动压路机,以及20~65吨圆碾或羊足碾的碾压效率高,宜用于路基填筑工程。而小型的夯土机(如联动打夯机)则适用于小面积的填土。为了确保填土密度达到规定的要求,施工前应在工地进行夯压遍数与密度的工地试验,据此制定施工计划以指导施工。在填筑路堤时,应随时在工地取样,用湿度密度仪检查含水量和干容量。
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