Shallowly-buried soft soil integrated trench reinforcing device and construction method

Abstract

The invention discloses a shallowly-buried soft soil integrated trench reinforcing device and a construction method. At first, slope excavation is carried out on a foundation pit, drain ditches are formed outside the pit, then geogrids and rubble layers are laid on the pit bottom from bottom to top in a trapezoidal reciprocating layering mode, soil body backfill is carried out, a crushed stone sand layer is laid, a concrete cushion is poured, an integrated trench body, embedded threaded rods and waterstop steel plates are installed, transverse and longitudinal H-shaped steel beams and steel pipe columns are installed in the integrated trench body, cable-stayed angle steel and vertical steel plates are installed on the outer surfaces of the side walls of the integrated trench body, the cable-stayed angle steel is fixed to the embedded threaded rods through connecting steel plates and nuts, second-layer soil body backfill is carried out, geogrids and rubble layers are laid again, and finally third-layer soil body backfill is carried out. According to the construction method, by means of indirect reinforcing of composite laminated structures of the geogrids and the rubble layers and direct reinforcing of the reinforcing members installed inside and outside the trench body, the stability in the integrated trench construction process and during the operation period is greatly improved.

Description

technical field [0001] The invention relates to the technical field of underground cavern excavation in geotechnical engineering, in particular to a shallow-buried soft soil reinforcement comprehensive pipe ditch device and a construction method. Background technique [0002] Urban comprehensive pipe ditch (corridor), also known as common ditch, is a municipal public tunnel space built underground in the city, and municipal public pipelines such as power, communication, and water supply are laid in one structure according to planning requirements, and unified planning and design are implemented. , construction and management. As the underground lifeline of the city, the construction of the comprehensive pipe trench has brought great vitality to the city's traffic and economy, but at the same time, the huge safety hazards brought by the comprehensive pipe trench cannot be ignored. Important urban pipelines such as heating pipelines, water supply and drainage pipelines, gas p...

AI Technical Summary

Problems solved by technology

As the underground lifeline of the city, the construction of the comprehensive pipe trench has brought great vitality to the city's traffic and economy, but at the same time, the huge safety hazards brought by the comprehensive pipe trench cannot be ignored

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