globalchange  > 气候变化与战略
CSCD记录号: CSCD:5605410
论文题名:
尺度效应下冻土路基结构适应性及优化
其他题名: Adaptability and Optimization of Permafrost Embankment Structure Under Scale Effect
作者: 刘戈; 汪双杰; 袁堃; 陈建兵; 李金平
刊名: 中国公路学报
ISSN: 1001-7372
出版年: 2015
卷: 28, 期:12, 页码:178-182
语种: 中文
中文关键词: 道路工程 ; 冻土路基 ; 优化改进 ; 新型结构 ; 实体工程
英文关键词: road engineering ; permafrost embankment ; optimization and improvement ; new structure ; entity engineering
WOS学科分类: TRANSPORTATION
WOS研究方向: Transportation
中文摘要: 为了解决目前多年冻土区路基调控措施普遍存在的适用性和局限性问题,应对全球气候变暖以及多年冻土区高速公路的建设要求,对目前普遍采用的6种路基调控措施进行了系统评价,在此基础上通过机理上优势互补、设计指标的优化提出了4种新型路基结构,在实体工程中进行了应用,并进行了地温监测与分析。结果表明:宽幅通风路基能有效降低路基高度,在暖季起到隔热作用,在冷季也可实现对流通风;块石-通风管路基由于通风管下部采用透壁结构大大增强了其与块石中空气对流换热效率,热棒-XPS板路基综合了各单一措施的调控优势,全年都可发挥出积极作用,2种复合路基调控效果均十分显著,能有效应对路基加宽后的吸热问题;空心块护坡路基既能对路基坡面起到良好的降温效果,还可对坡面起到很好的保护作用,能有效防治高路基阴阳坡效应;无序堆放结构由于内部存在较大空隙,调控效果要优于顺序摆放结构。
英文摘要: In order to solve the applicability and limitation of embankment adjustment measure in permafrost regions and to reply global warming and the requirement of expressway construction, six types of general embankment adjustment measures were systematically evaluated. Four new types of embankment structures were presented by means of mechanism complementation and optimizing design parameters. They were applied in entity engineering and the ground temperature was monitored and analyzed. The results show that wide ventilated embankment can effectively lower embankment height, which plays heat insulation role in warm seasons and convection role in cold seasons. The combined ventilated-duct and crushed-rock embankment greatly strengthens the efficiency of heat convection because of perforated wall of the bottom part. The XPS embankment with thermosyphon combines the adjustment advantages of single measure and plays a proactive role in whole year. Both of the two types of composite embankments have the significant adjustment effect, which can play a better role in preventing thermal effect of the widened asphalt pavement. The hollow-block slope embankment can not only decrease the heat absorption at the embankment slope but also protect the slope, which can prevent the sunny-shady slope effect. The adjustment effect of randomly-piled hollow blocks is better than that of orderly-placed hollow blocks because there exists larger void.
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/150217
Appears in Collections:气候变化与战略

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作者单位: 中交第一公路勘察设计研究院有限公司, 西安, 陕西 710075, 中国

Recommended Citation:
刘戈,汪双杰,袁堃,等. 尺度效应下冻土路基结构适应性及优化[J]. 中国公路学报,2015-01-01,28(12):178-182
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