近十几年来高速公路的建设发展迅猛,成绩骄人,但是公路交通流量增长势头更快,在一些经济发达地区的交通压力仍然很大,将原有高速公路进行拓宽作为缓解交通流压力的一种措施,和新建高速公路比较其优势是:节约占地、投资少等。在未来几年中高速公路拓宽的建设市场将会很大,为此,现对高速公路拓宽施工中产生的纵向开裂问题进行了简要介绍,供参考,不妥之处望指正。 Over the past decade, the construction of expressways has witnessed rapid development and impressive achievements. However, the traffic volume of highways has been growing faster. Traffic pressure in some economically developed areas is still very high. The existing expressways have been widened as one of the measures to alleviate traffic pressure Measures, compared with the new highway is: save land, less investment. In the next few years, there will be a huge market for the construction of highways. As a result, the longitudinal cracking problems caused by the widening of expressways are briefly introduced for reference.