In-situ protection structure and method for high-voltage power pipe culvert

Abstract

The invention discloses an in-situ protection structure and method for a high-voltage power pipe culvert. The structure comprises a Bailey beam used for suspending a power pipe culvert, wherein the two ends of the Bailey beam are erected on crown beams at the tops of walls connected to the ground and constructed in a foundation pit, and set portions of the inner portion of the foundation pit are provided with lattice column piles as intermediate supports of the Bailey beam; rotating spray pile strengthening stratums are adopted in a set range in the axial direction of the power pipe culvert atthe outer sides of the walls connected to the ground, and a cross static pressure grouting method is adopted to perform grouting strengthening on the soil body at the bottom of the power pipe culvertat the two sides of rotating spray piles. The in-situ protection structure and method for the high-voltage power pipe culvert have the advantages that the method of erecting the Bailey beam on the foundation pit to suspend the high-voltage power pipe culvert is adopted, in-situ protection is performed on the high-voltage power pipe culvert, and the high expense required for power migrating is avoided; the migrating duration of the high-voltage power pipe culvert is shortened, and the impact on the surrounding environment and many adverse social impacts caused by the in-situ protection structure and method are reduced.

Description

technical field [0001] The invention relates to the technical field of municipal engineering construction such as urban rail transit construction and underground space comprehensive development, and in particular to an in-situ protection structure and method for high-voltage electric pipes and culverts. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] When excavating deep foundation pits in water-rich composite strata, high-voltage power pipelines are usually dealt with by relocation. Relocation of high-voltage power pipelines in a narrow ground space environment will result in long construction periods and high costs, which will have an impact on the surrounding environment. Large, but also often bring many adverse social impacts. [0004] Moreover, the inventors found that in the construction of municipal projects such as deep foundation...

AI Technical Summary

Problems solved by technology

Under some specific environmental conditions, the pipelines protected in situ affect the construction of the enclosure structure of the underground structure, and the excavation risk of deep foundation pits is formed due to the inability of the enclosure structure to be closed

In the case of complex ground environment, many surrounding buildings and close to the foundation pit, the pre-construction foundation pit is located in the water-rich composite stratum, which has formed a greater safety for the in-situ protection of pipelines and the excavation of deep foundation pits. risk

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