Underground excavation construction method for additionally arranging underground connecting passage between new and old buildings

Abstract

The invention discloses an underground excavation construction method for additionally arranging an underground connecting passage between new and old buildings, and relates to the technical field ofunderground structure reconstruction of old buildings. The problem that it is difficult to develop and reconstruct underground spaces connecting old buildings with newly constructed buildings is aimedat. The underground construction method comprises the steps that wall bodies and original foundations of the old buildings are strengthened, deformation and uneven settlement of superstructures of the old buildings during later excavation construction are limited, vertical shafts capable of communicating with jacking construction areas are constructed in the old buildings, pipe jacking opening envelope structures are constructed at both ends of the jacking construction areas respectively to prevent water seepage in the pipe jacking work areas during construction, the vertical shafts of the old buildings and external walls, underground continuous walls, and corresponding pipe jacking opening envelope structures of the newly constructed buildings are subjected to hole opening, a no receiving well pipe jacking construction technology is adopted to perform the jacking construction, and the basement structures of the old buildings and the basement structures of the newly constructed buildings are connected through underground connecting passages.

Description

technical field [0001] The invention relates to the field of reconstruction and construction of underground structures of old buildings, in particular to a construction method of underground excavation for adding underground passages between old and new buildings. Background technique [0002] With the acceleration of urbanization, the renovation of old buildings in cities is becoming more and more frequent. This not only requires the protection of many historical buildings, but also faces the development of underground spaces such as adding basements and underground passages in a limited space. This has brought great difficulties to the construction of the project. [0003] At present, most of the underground structure reconstruction projects of old buildings focus on the development and utilization of the underground space under the single building. The need to add underground passages under buildings is also urgent, which usually involves the protection of old building f...

AI Technical Summary

Problems solved by technology

[0002] With the acceleration of urbanization, the renovation of old buildings in cities is becoming more and more frequent. This not only requires the protection of many historical buildings, but also faces the development of underground spaces such as adding basements and underground passages in a limited space. requirements, which has brought great difficulties to the construction of the project

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