Correction system and method for ballastless track bridge of high speed railway run in soft soil area

Abstract

The invention discloses a correction system for a ballastless track bridge of a high speed railway run in a soft soil area. A deformation slot, a soil digging hole group, a stress release hole group and a stress removal hole group are sequentially formed in an asymmetrical load stacking area foundation in the transverse displacement correction direction of a high speed railway ballastless track bridge pier from the outer side to the inner side; a first inclinometer, a first pore water pressure gauge, multiple rows of high pressure directional jet devices, a second inclinometer, a second pore water pressure gauge and a third inclinometer are sequentially arranged in a transverse deviation side foundation of the high speed railway ballastless track bridge pier from the inner side to the outer side. According to the invention, the bridge is driven by the bridge pier foundation to move by exerting acting force on the bridge pier foundation, so that the purpose of correcting the transverse displacement of the bridge is realized.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a deviation correction system and method for operating high-speed railway ballastless track bridges in soft soil areas. Background technique [0002] In recent years, my country's high-speed railway has developed rapidly. In order to avoid fertile land, save land, and reduce the impact of soft soil deformation on the subgrade, bridges have become the main engineering type of high-speed railway projects. The foundations of railway bridges are mainly pile-cap foundations, and this type of deep foundation is effective in controlling post-construction settlement of bridges. In terms of line tracks, ballastless tracks are widely used in high-speed railways in my country based on the advantages of long service life, good durability, and low maintenance workload. However, engineering activities such as piling on one side of the bridge, excavation of foundation pits or asymmet...

AI Technical Summary

Problems solved by technology

However, engineering activities such as one-sided loading of bridges, excavation of foundation pits, or asymmetric construction of post-maintenance repairs may cause the lateral deformation of ballastless track bridges in soft soil areas to exceed the limit, damage the smoothness of the track structure, and cause trains to overturn in severe cases

[0003] A large number of ballastless tracks used in my country usually use longitudinal connections, which have high longitudinal and lateral rigidity and cannot be repaired in a short period of time, and the use of traditional ballasted track push, pull, and track-shifting lateral deformation correction methods will cause great damage to the ballastless track structure and risk very high

The skylight time of the high-speed railway is short, and the operation or suspension of the high-speed railway is affected by the correction of the track structure, which not only causes economic losses, but also may have a huge negative social impact

The above factors greatly restrict the selection of the correction scheme, making it almost impossible to directly correct the track structure on the bridge

At present, there is no method for rectifying ballastless track bridges of high-speed railways in soft soil areas that do not need to interrupt operations, do not damage the track structure, and have low risks

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