首页|期刊简介|投稿指南|分类索引|刊文选读|订阅指南|证明资料|样刊邮寄查询|常见问题解答|联系我们
张明礼,张瑞玲,冯德刚,等. 寒区工程锅盖效应病害调查与防治研究进展[J]. 科学技术与工程, 2021, 21(19): 7863-7873.
Zhang Mingli,Zhang Ruiling,Feng Degang,et al.Engineering diseases investigation and research progress on prevention of the pot-cover effect in cold regions[J].Science Technology and Engineering,2021,21(19):7863-7873.
寒区工程锅盖效应病害调查与防治研究进展
Engineering diseases investigation and research progress on prevention of the pot-cover effect in cold regions
投稿时间:2020-09-25  修订日期:2021-04-08
DOI:
中文关键词:  寒区工程  锅盖效应  病害调查  防控措施  水汽运移
英文关键词:cold region engineering  pot-cover effect  engineering disease investigation  control measures  vapor migration
基金项目:国家自然科学基金;中交第三公路工程局有限公司技术服务项目
                    
作者单位
张明礼 兰州理工大学土木工程学院
甘肃省科学院地质自然灾害防治研究所
张瑞玲 兰州理工大学土木工程学院
冯德刚 中交三公局桥梁隧道工程有限公司
严艳锋 中交三公局桥梁隧道工程有限公司
周志雄 兰州理工大学土木工程学院
郝东苗 兰州理工大学土木工程学院
李广 兰州理工大学土木工程学院
摘要点击次数: 356
全文下载次数: 88
中文摘要:
      寒区大温差环境下封闭工程结构层覆盖于地基上,导致水分聚集在面层底部形成“锅盖效应”,引起地基承载力降低,加剧工程冻融病害。随着“一带一路”战略的推进,寒区高等级公路、油气站场、机场跑道建设涉及的锅盖效应病害防治亟需研究。本文调查了公路路基、高铁无砟轨道基床、机场跑道、输油站场面临的锅盖效应病害,从病害特征、形成机理、理论模型、防控技术等四个方面,综述了寒区工程锅盖效应形成机理及病害防治的最新进展。同时,在总结了当前锅盖效应研究不足的基础上,提出了今后的研究方向:(1)关注水汽含量的测试和多年冻土区锅盖效应形成条件研究;(2)构建考虑空气–水汽两相流和土体变形规律的水–汽–热–力耦合模型,以此来预测工程构筑物的稳定性;(3)开展基于“阻–通–截”理念的综合防治措施研究,以期为寒区工程设计和病害防治提供理论支持和科学对策。
英文摘要:
      In the cold regions with large temperature difference, covering the closed structure layer on the foundation will lead to the accumulation of water and vapor at the bottom of the surface layer, which will form the “pot-cover effect”, thereby reducing the bearing capacity of the foundation and aggravating the freezing-thawing disease of the construction projects. With the promotion of “the Belt and Road” strategy, the research on the prevention technique measures of pot-cover effect diseases involving the high-grade highways, oil and gas stations and airport runways in cold regions is urgently needed. Based on the investigation of the diseases caused by the pot-cover effect on highway subgrade, subgrade bed of ballastless track of high-speed railway, airport runway and oil transfer station, the present work summarizes the latest progress of the formation mechanism and prevention measures of pot-cover effect of engineering in cold regions from four aspects: disease characteristics, formation mechanism, theoretical model and prevention technology. Meanwhile, the disadvantages of the current study on pot-cover effect are summarized. Finally, the following suggestions are given priority to: (1) pay attention to the test of water vapor content and the research on the formation conditions of the pot-cover effect in permafrost regions; (2) establish a coupled water-vapor-heat-stress model which considering the flow of air and vapor and soil deformation characters to predict the stability of engineering structures; (3) carry out comprehensive prevention and control measures based on the principle of "resistance-passage-interception". These suggestions will provide theoretical guidance and scientific basis for the wide engineering design and hazard control in cold regions.
查看全文  查看/发表评论  下载PDF阅读器
关闭
你是第44315506位访问者
版权所有:科学技术与工程编辑部
主管:中国科学技术协会    主办:中国技术经济学会
Tel:(010)62118920 E-mail:stae@vip.163.com
京ICP备05035734号-4
技术支持:本系统由北京勤云科技发展有限公司设计

京公网安备 11010802029091号