Subgrade structure, method and application for deep replacement subgrade of buried pile row subgrade

Abstract

A subgrade structure, method and application for deep-seated replacement of subgrade excavated with piles and piles, including an overall rectification process, a main line rectification process, and a rectification process for a subgrade section with a friction plate. The subgrade fill is replaced by the method of row piles, and the elevation and plane position of the track structure are adjusted. The present invention adopts the subgrade structure in which the row piles support the track structure, and the track structure is supported by the reinforced concrete row piles, which can completely eliminate the settlement and expansion deformation of the subgrade filler under the premise of ensuring the stable force of the track structure and the safety of driving, thereby ensuring the track structure. The present invention adopts the method of deep excavation and row piles to replace the subgrade, which can deeply replace the main line and the subgrade of the track structure with the friction plate under the operating conditions, and the geometric state of the ballastless track can be adjusted during the replacement process. The turnout area remediation process refers to the main line remediation process and the road with friction board according to the width of the base plate and the line characteristics of the trackside equipment.

Description

technical field [0001] The present invention relates to a structure, method and application for engineering construction, in particular to a deep-replacement structure, method and application of subgrade excavation and row piles. Background technique [0002] With the increase in the scale of high-speed railway construction in my country, the problems of subgrade settlement and overhanging have become increasingly apparent, resulting in a decrease in the smoothness of the track structure, increasing the maintenance and repair workload of the equipment management department, and some work sites even operate at a speed limit. The causes of subgrade settlement or overhanging are complex, among which the deformation of subgrade packing itself has a greater impact. In response to such problems, some work sites with serious deformation have adopted the method of subgrade shallow filling replacement under operating conditions, to a certain extent The influence of subgrade deformati...

AI Technical Summary

Problems solved by technology

[0004] The invention solves the problems of ballastless track subgrade deep replacement and ballastless track elevation and plane position adjustment under operating conditions through the method of underground excavation and pile arrangement and roadbed structure

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