Construction method of caisson in underground space in building-intensive area

Abstract

The invention belongs to the technical field of underground architectural engineering, relates to a caisson construction method for developing an underground space at an old building dense region where an underground garage is not simultaneously built, and particularly relates to a building dense region underground-garage-building local caisson construction method. The method adopts interval caissons, an odd number of the caissons are disposed in the dense building group according to an adjacent building interval, a middle box body is sunk firstly, box bodies on two sides are symmetrically sunk then, and symmetrical forward tunneling is performed under protection of the caissons through the combination with a hidden digging method. The construction method can solve many problems of underground garage excavation construction in the building dense region well, and effectively eases a situation of a parking difficulty.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of underground construction engineering, and relates to a caisson construction method for developing an underground space in an old building-intensive area where underground garages are not constructed synchronously, in particular to a local caisson construction method for building an underground garage in a building-intensive area. [0003] Background technique: [0004] With the improvement of people's living standards, private cars have entered thousands of households, which directly leads to the difficulty of parking in densely populated areas of old buildings without underground garages, and the occurrence and deterioration of serious congestion. Security risks. The use of three-dimensional parking spaces on the ground has a certain mitigation effect, but it has shortcomings such as limited parking, difficult maintenance, short life cycle, poor environmental landscape, etc., and it is difficult t...

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Problems solved by technology

[0004] With the improvement of people's living standards, private cars have entered thousands of households, which directly leads to the difficulty of parking in densely populated areas of old buildings without underground garages, and the occurrence and deterioration of serious congestion. Security risks

The use of three-dimensional parking spaces on the ground has a certain mitigation effect, but it has shortcomings such as limited parking, difficult maintenance, short life cycle, poor environmental landscape, etc., and it is difficult to solve the problem fundamentally; therefore, appropriate construction methods are adopted for development and utilization according to the characteristics of various residential areas Underground space planning and construction of an underground garage is a once-and-for-all solution

[0005] Residential areas without simultaneous construction of underground garages have common characteristics such as narrow roads, small distances between buildings, complex underground environments around, and local ground building facilities. It is difficult for construction methods such as underground excavation to give full play to their respective advantages, and cannot meet the technical requirements for the development and construction of underground garages

CN103046570A discloses an unmanned pneumatic caisson construction method, which realizes excavation and soil dumping operations in an anhydrous environment, has a high degree of informatization, and has little impact on the surrounding environment, but the method is high in cost and takes up a large amount of ground space, so it is not applicable Development of Underground Space in Dense Areas of Old Buildings

CN101736749A discloses a continuous caisson construction method for soft soil foundations. The method carries out sinking construction for a plurality of individual caissons arranged continuously, and then combines the box sections of adjacent individual caissons into a whole. The construction period of the method is Short, it is more suitable for construction projects of subway stations in soft soil areas with limited construction period requirements. However, this method needs to change the covering soil of the entire underground space range, and is not suitable for the outside of the old building-intensive area with narrow space and local ground building facilities. environment

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