中南大学学报（自然科学版）2025，Vol.56Issue(5)：1911-1922,12.DOI:10.11817/j.issn.1672-7207.2025.05.018
气候因素影响下内置式加筋土桥台服役性能
In-service performance of embedded geosynthetic-reinforced soil abutment under influence of climate factors
摘要
Abstract
To investigate the influence of climate factors on the in-service performance of embedded geosynthetic-reinforced soil abutments,a field experiment was conducted in Anhui Province.Firstly,multi-element and multi-section monitoring devices were utilized to obtain abutment deformation,earth pressure,and temperature field distribution.Secondly,based on long-term monitoring data,the characteristics of internal temperature field distribution and the mechanisms of stress-deformation evolution under temperature-rainfall coupling effects were revealed.Finally,through multivariate analysis and comparative studies with conventional geosynthetic-reinforced soil retaining walls,the mechanism of embedded piles was clarified to provide theoretical basis for engineering design.The results show that the internal temperature distribution pattern correlates closely with periodic ambient temperature variations,and yet exhibits thermal hysteresis.Temperature distribution is influenced by free surfaces and embedded piles.Lateral displacement of the abutment facing significantly increases with rising temperatures and seasonal rainfall.Moreover,lateral displacement at the middle-height of the facing is significantly greater than that at the top and the bottom of the facing.However,displacement differences between middle and extreme positions decrease significantly within pile-reinforced zones due to the lateral confinement provided by the embedded piles.As the lateral deformation of the facing progresses,lateral earth pressure behind the facing is redistributed due to pile-induced stress arching and gradually shifts towards the pile backs.The embedded geosynthetic-reinforced soil abutment demonstrates superior differential settlement control capability,therefore effectively mitigating the"bump at the end of the bridge"phenomenon.Climate effects and embedded piles significantly influence the in-service performance of embedded geosynthetic-reinforced soil abutments.Special emphasis is therefore placed on monitoring pressure distribution evolution,coupled with the implementation of waterproofing and drainage measures during design and construction.关键词
道路工程/服役性能/现场监测/内置式加筋土桥台/温度/降雨Key words
road engineering/in-service performance/field monitoring/embedded geosynthetic-reinforced soil abutment/temperature/rainfall分类
交通运输引用本文复制引用
左彬澧,徐超,孟亚,胥昕怡,李昊煜..气候因素影响下内置式加筋土桥台服役性能[J].中南大学学报（自然科学版）,2025,56(5):1911-1922,12.基金项目
安徽省交通运输重点科技项目(2021-KJQD-016)(Project(2021-KJQD-016)supported by the Key Transportation Science and Technology Project of Anhui Province) （2021-KJQD-016）
