Abstract
With the development of rail transit technology, shield tunneling machines grinding piles while undercrossing existing structures has become increasingly commonplace. Improper parameter selection can not only cause damage to shield machine equipment, but may even lead to secondary disasters such as ground collapse and damage to existing structures. To enrich domestic construction experience in the field of shield machine pile grinding, this paper systematically organizes and summarizes the construction technology for shield machines undercrossing row piles in small-angle mode with soft-soil cutters, based on actual construction cases. It provides detailed descriptions of key information including problems encountered during construction, treatment measures, and tunneling parameters, aiming to provide robust technical support for accumulating pile grinding experience within the industry and to offer practical case references for similar engineering projects.
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Preamble
Small-Angle Row Pile Grinding Construction Technology for EPB Shield Machines with Soft-Soil Cutters
WANG Lianfu
China Railway 16th Bureau Group Co., Ltd., Beijing 100018, China
Abstract
With the development of rail transit technology, shield machine pile grinding under existing structures has become increasingly common. Improper parameter selection can not only damage shield machine equipment but may also trigger secondary disasters such as ground collapse and damage to existing structures.
To enrich domestic construction experience in shield machine pile grinding, this paper systematically reviews and summarizes the construction technology for EPB shield machines undercrossing row piles in small-angle mode with soft-soil cutters, based on actual construction cases. Key information including problems encountered during construction, remedial measures, and excavation parameters is described in detail, aiming to provide strong technical support for the industry to accumulate pile grinding experience and to offer practical case references for similar engineering projects.
Keywords: pile grinding; angle; soft-soil cutter; row piles