Construction method for pulling out steel sheet piles close to existing buildings

Abstract

The invention relates to steel sheet pile pulling out technique, in particular to a construction method for pulling out steel sheet piles close to existing buildings, and solves the technical problem that at present, foundations of the existing buildings are prone to influences so as to influence safety of buildings when the steel sheet piles are pulled out in construction of road pipe networks close to the buildings. The construction method for pulling out the steel sheet piles close to the existing buildings is characterized by including the steps: (1) taking five steel sheet piles as a unit to pull out the steel sheet piles; (2) using a 'pulling out five and piling two' construction method, namely piling two lime gravel piles when every five steel sheet piles are pulled out, for punning and filling pile seams, above underground water level, left after first-time pulling out; (3) pulling out remnant steel sheet piles for the second time, and using the 'pulling out five and piling two' construction method for treatment of the pile seams left after second-time pulling out of the steel sheet piles. The method is safe, reliable, simple in construction operation, quick in construction, effective in reinforcement, low in manufacturing cost, low in environmental constraint and low in influences on the existing buildings and pipelines.

Description

technical field [0001] The invention relates to a process for removing steel sheet piles, in particular to a construction method for removing steel sheet piles adjacent to existing buildings. Background technique [0002] With the rapid development of our country's economy, the pace of urban construction is accelerating, and large-scale old city renovation projects are also increasing. Due to the complicated underground pipelines, the infrastructure of buildings on both sides of the street is uneven, and the excavation of deep foundation pits is often It is inevitable to be carried out near the existing buildings. Due to the narrow working surface on site, steel sheet piles and other rigid supports are mostly used for the support of deep foundation pits. Although this support has the advantages of high strength, convenient construction, and reusability, etc. , but in the process of its removal, a certain vibration will be generated, such as pulling out piles and carrying t...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of our country's economy, the pace of urban construction is accelerating, and large-scale old city renovation projects are also increasing. Due to the complicated underground pipelines, the infrastructure of buildings on both sides of the street is uneven, and the excavation of deep foundation pits is often It is inevitable to be carried out near the existing buildings. Due to the narrow working surface on site, steel sheet piles and other rigid supports are mostly used for the support of deep foundation pits. Although this support has the advantages of high strength, convenient construction, and reusability, etc. , but in the process of its removal, a certain vibration will be generated, such as pulling out piles and carrying too much soil, which will cause soil displacement and ground subsidence, which will bring harm to the constructed underground structure and affect the normal use of adjacent buildings, roads and underground pipelines

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