重难点控制下高速公路改扩建路基拼接技术研究与效益分析

Research and Benefit Analysis of Roadbed Splicing Technology for Expressway Reconstruction and Expansion under Key and Difficult Point Control

高速公路在改扩建过程中,所涉及的施工技术和要点与新建高速有所不同,其更注重与原高速的衔接与协调。因此有必要对其所采用的施工技术要点进行分析。本文以江苏镇江某高速公路四改六为例,对其路基施工技术进行深入的技术研究,尤其是其路基拼接施工以及台背后的回填等环节,通过对其重点施工技术的阐述与把控,保障改扩建路基施工的后续运营安全与质量,为后续的路面拼接等重要工序的实施奠定良好基础。

The construction techniques and key points involved in the renovation and expansion of highways are different from those of newly built highways,and they focus more on the connection and coordination with the original highways.Therefore,it is necessary to analyze the key points of the adopted construction technology.This article takes the fourth to sixth renovation of a highway in Zhenjiang,Jiangsu Province as an example to conduct in-depth technical research on its roadbed construction technology,especially its roadbed splicing construction and backfilling behind the platform.Through the explanation and control of its key construction technologies,the subsequent operation safety and quality of the renovated and expanded roadbed construction are guaranteed,laying a good foundation for the implementation of important processes such as pavement splicing in the future.