Modular rapid construction method for structure-beam steel bar skeleton of deep foundation pit

Abstract

The invention discloses a modular rapid construction method for a structure-beam steel bar skeleton of a deep foundation pit. The construction method comprises the steps of segment division of the structure-beam steel bar skeleton, prefabrication of the structure-beam steel bar skeleton, hoisting of the structure-beam steel bar skeleton, placing and rotating of the structure-beam steel bar skeleton and connecting of the structure-beam steel bar skeleton. According to the construction method, a three-dimensional real scene model is established by utilizing an BIM technology in combination withthe the actual position relationship of an enclosure structure of the deep foundation pit and a supporting system, the hoisting and assembling process of the structure-beam steel bar skeleton is simulated, segment division is reasonably carried out on the structure-beam steel bar skeleton, and smoothness of hoisting is ensured; and the structure-beam steel bar skeleton can be prefabricated in sections on the ground in advance through a prefabricated jig frame, the main line construction period is not occupied, and rapid construction of the structure-beam steel bar skeleton of the deep foundation pit is achieved. According to the construction method, the problem of slow construction progress of the structure beam in the limited space of the deep foundation pit is effectively solved. The construction method has the characteristics of simple operation, good safety and high work efficiency, and has good social and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of steel bar construction for structural beams, and in particular relates to a modular rapid construction method for steel bar skeletons of structural beams in deep foundation pits. Background technique [0002] The traditional deep foundation pit structure beam reinforcement construction method is to directly carry out on-site binding work at the bottom of the pit after the floor cushion and waterproofing construction. It is necessary to erect temporary supports and reserve a space for manual operation, and then tie the reinforcement, drop the beam, adjust and align the connection Wait. Affected by the enclosure structure and internal support system, the working space in the pit is limited, and the traditional construction method has the following shortcomings: first, the installation of steel bars must be carried out after the waterproof protective layer reaches a certain strength; second, the installation...

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Problems solved by technology

Affected by the enclosure structure and internal support system, the working space in the pit is limited, and the traditional construction method has the following shortcomings: first, the installation of steel bars must be carried out after the waterproof protective layer reaches a certain strength; second, the installation of steel bars on site is affected by cross-construction between processes , part of the reinforcement of the bottom slab needs to be carried out after the installation of the steel reinforcement of the beam body is completed. The process takes a long time, and the concrete pouring of the bottom slab cannot be completed quickly, which prolongs the exposure time of the foundation pit and increases potential safety hazards. Third, the quality of the on-site reinforcement installation is low. It is difficult to control the precision of steel bar connection; Fourth, in order to meet the installation and operation space of the steel bar of the underfloor turning beam, the excavation of the trench needs to be widened, resulting in waste of concrete

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