Digging method foundation pit structure of steel cover and plate cover, and construction method

Abstract

The invention discloses a steel cover board covered excavation foundation ditch structure and construction method thereof, belonging to the constructional engineering technical field and comprising a foundation ditch enclosure wall, a construction upright column, an upright column pile, a transverse horizontal bracing, a plurality of longitudinal horizontal bracings, a screens steel board and a steel cover board, wherein, the foundation ditch enclosure wall is positioned on the out edge of an inner construction site foundation ditch, the upright column pile is vertically arranged at the bottom of the foundation ditch and inlayed into the ground bottom, the construction upright column is sheathed in the upright column pile, the transverse horizontal bracing and a plurality of longitudinal horizontal bracings are orthogonally arranged as box type structure, the screens steel board is vertically arranged on the plane surface formed by the transverse horizontal bracing and the longitudinal horizontal bracing and fixed on the crossing point of the transverse horizontal bracing and the longitudinal horizontal bracing, and the steel cover board is arranged on the screens steel board and is in the same plane with the construction site surface. The invention has the advantages of effectively easing the contradiction of occupying sites of foundation ditch construction with the traffic above-ground, increasing the recycling rate of structure material and minishing the influence to environment caused by structure waste material.

Description

technical field [0001] The invention relates to a structure in the technical field of construction engineering and a construction method thereof, in particular to a foundation pit structure with a steel cover plate and a construction method thereof. Background technique [0002] The construction methods of domestic subway stations generally include open-cut method, under-cut method and cover-excavation method. The open cut method is generally suitable for areas with open construction sites and low requirements for surrounding environmental protection. It has the characteristics of wide application range, fast construction speed, simple structure, and relatively low engineering cost. It is one of the most commonly used foundation pit construction methods. . The underground excavation method is a method of underground structure construction using non-ground direct excavation methods, such as mining methods and freezing methods. The mining method is generally applicable to ro...

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Problems solved by technology

[0006] The present invention aims at the above-mentioned deficiencies existing in the prior art, and provides a kind of excavation excavation method foundation pit structure with steel cover plate and its construction method, which can effectively alleviate the space occupied by the foundation pit construction of subway stations in urban building-intensive areas with soft soil and soil. The contradiction between ground traffic pressure reduces the adverse impact of foundation pit construction on the surrounding environment. The new steel cover structure adopted can be reused, which greatly enhances the reuse rate of the structure and reduces the impact of structural waste on the environment. , and at the same time reduce the large deformation of the foundation pit and the noise nuisance problems existing in the prior art

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