Retaining wall type high-speed railway subgrade coordinated settlement control construction method based on intelligent monitoring of adjacent existing lines

Abstract

The invention discloses an adjacent existing line retaining wall type high-speed rail roadbed coordinated settlement control construction method based on intelligent monitoring, and relates to the technical field of constructional engineering.The overall construction sequence is as follows: firstly, intelligent monitoring instruments and equipment are laid to conduct automatic detection on a whole construction railway section, then a first metal separation net is constructed, and then a site is primarily leveled; and high-pressure jet grouting pile and isolation pile construction is carried out, foundation pit excavation and supporting are carried out after pile arrangement is completed, a retaining wall type roadbed construction stage is entered, and cantilever retaining wall roadbed filling is carried out. The construction method is simple, the influence on settlement of the adjacent existing lines in the construction process can be effectively reduced, the safety and comfort of the operation railway are guaranteed, the construction quality is high, differential settlement of the transition section of the new roadbed and the old roadbed is greatly reduced, an intelligent monitoring system is adopted for settlement and displacement monitoring in the whole construction railway section construction period, the deformation condition of the existing structure in the construction period is mastered in time, deformation overrun is controlled and treated in time, and the operation safety of a business line is ensured.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a construction method for coordinated settlement control of a high-speed railway foundation based on intelligent monitoring of retaining walls adjacent to existing lines. Background technique [0002] In recent years, according to the needs of national economic development and the gradual improvement of the technical level of railway construction, the national railway network has been continuously improved, and more and more projects have been carried out to upgrade and transform existing railway lines. It is inevitable that the high-speed railways in operation will intersect with the newly built railways. , Parallel, Help Wide, etc. For the railway during the operation period, new subgrade filling, side filling and other constructions beside the existing subgrade will inevitably produce additional settlement deformation, which will affect the smoothness of the t...

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Problems solved by technology

In order to ensure that the railway settlement meets the design requirements, it is necessary to monitor the subgrade. However, the existing subgrade settlement monitoring has the characteristics of large construction interference, high precision, long monitoring interval, and difficult data collection. Traditional monitoring methods cannot be used for subgrade monitoring. Settlement assessment, unable to ensure the stability of the roadbed, while ensuring the safety and stability of the operating route

[0003] In summary, during the existing subgrade filling process, the old and new subgrades will produce excessive uneven settlement, and the existing subgrade settlement monitoring method has construction Due to the characteristics of large interference, high precision requirements, long monitoring interval, and difficult data collection, traditional monitoring methods cannot be used to better evaluate subgrade settlement

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