Method for isolation correction of roadbed for bridge piers of high-speed railway on premise of protection of surrounding existing buildings

Abstract

The invention discloses a method for isolation correction of a roadbed for the bridge piers of a high-speed railway on the premise of protection of surrounding existing buildings. According to the method, before correction of the bridge piers of a high-speed railway, a barrier structure is longitudinally arranged at the lateral excursion side of the roadbed for the bridge piers of the high-speed railway along the railway and between an existing building and the roadbed for the bridge piers, and the barrier structure can prevent stress produced in construction of jet-grouted piles from transmitting to the foundation of the existing building; and then high-pressure jet-grouted piles are used for correction of the bridge piers of the high-speed railway. The method has the advantages of simple structure and convenient application; and since a row of the barrier structure capable of preventing stress produced in construction of jet-grouted piles from transmitting to the foundation of the existing building is arranged between the roadbed for the bridge piers and the existing building, damage to the foundation of the existing building caused by stress diffusion in the process of construction of the high-pressure jet-grouted piles is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of high-speed railway embankment disease rectification, in particular to a high-speed railway pier embankment isolation and rectification method for protecting surrounding existing buildings during the deflection rectification process of high-speed railway pier. Background technique [0002] At present, my country's high-speed railway has basically formed a four-vertical and four-horizontal pattern. Among them, Beijing-Shanghai, Beijing-Hong Kong, Hangzhou-Fuzhou and other dedicated passenger lines pass through coastal areas where soft soil is widely distributed. Based on the advantages of long service life, good durability and small maintenance workload of ballastless track, ballastless track is widely used in high-speed railways in my country. After many years of theoretical and engineering case studies, Chinese engineers and technicians have a deep understanding of the subgrade settlement of ballastless ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing high-pressure jet grouting piles in the prior art mentioned in the above-mentioned background technology are likely to cause damage to the surrounding existing buildings during the construction process of the high-speed railway bridge pier, and to provide a method for protecting the surrounding existing buildings. High-speed railway bridge pier embankment isolation and rectification method

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