Construction Method of In-Situ Suspension Protection for Long-distance Span Foundation Pit Box Culvert

Abstract

This application relates to a long-distance cross-foundation pit box culvert in-situ suspension protection construction method. The two ends of the load-bearing rod are fixed to the ring beam, so that the load-bearing rod can apply upward pre-tension to the box culvert through the suspension component. After the soil at the bottom of the box culvert is excavated, the self-weight load of the box culvert and the load acting on the suspended part of the box culvert during the construction of the foundation pit can be offset in time by the pre-tension force, so that the box culvert is not easy to settle and deform, so that when the foundation pit is constructed, The protection of the box culvert can be achieved without relocating the box culvert, which saves the construction time of the foundation pit.

Description

technical field [0001] The present application relates to the technical field of box culvert protection, in particular to a construction method for in-situ suspension protection of long-distance box culverts spanning foundation pits. Background technique [0002] When carrying out underground construction in urban areas, it is usually necessary to carry out foundation pit construction. In recent years, some urban land tends to be saturated. At the same time, there are many box culverts installed with pipelines underground in cities. The foundation pit excavation will be carried out in the box culvert area. [0003] The excavation of the foundation pit in the area where the box culvert is buried will usually hollow out the soil under the original box culvert, and the soil under the original box culvert will be hollowed out, which will cause the box culvert to lose the soil below it. Under the action of the vibration load of the subsequent foundation pit construction and the ...

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that there are the following defects: the relocation of the box culvert requires the use of various large-scale mechanical equipment and a large amount of manpower to implement it for a certain period of time. After the subsequent foundation pit construction is completed, the box culvert needs to be moved back to further extend foundation pit construction period, therefore, there is room for improvement

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