路基工程Issue(4)：1-10,10.DOI:10.13379/j.issn.1003-8825.202305040
拓宽公路差异沉降问题的研究现状与成果综述
Research Status and Achievements Summary of Differential Settlement in Road Widening
摘要
Abstract
In order to systematically understand the status quo and achievements of the research on differential settlement in road widening engineering,576 related articles in 1997-2021 were sorted,and the development history,the main research contents and the actual project cases of this issue were summarized herein.Depending on the induction of the factors influencing differential settlement in road widening engineering,the method classifying the internal and external factors,and the direct and indirect factors was put forward.By integrating the rules and features of every factor influencing the differential settlement curve,the generalized model incorporating three patterns of differential settlement curve,i.e.bidirectional variation,unidirectional local variation and unidirectional global variation,was built.The influence law of differential settlement on the stress of pavement structure layer was concluded.The position of the layer controlling tensile stress between the new and old pavement was determined,and the generalized guideline to calculate the criteria controlling differential settlement was established.In addition,the variety of techniques decreasing and controlling differential settlement were sorted out so as to compare the applicability,advantages and disadvantages of each technique.On the basis of the research status,the direction of research on differential settlement of top surface of new and old subgrade was prospected.关键词
道路拓宽/差异沉降/研究成果/曲线模型/控制标准/减控技术Key words
road widening/differential settlement/research achievement/curve model/control standard/decreasing and controlling techniques分类
交通工程引用本文复制引用
庞军,吴红刚,秦昌乐,马彦军,丁鸿程..拓宽公路差异沉降问题的研究现状与成果综述[J].路基工程,2024,(4):1-10,10.基金项目
国家重点研发计划(2018YFC1504903) （2018YFC1504903）
甘肃省自然科学基金(21JR7RA738) （21JR7RA738）
