Multi-point collaborative loading control method for assembly of prefabricated underground structures

Abstract

The invention discloses a multi-point cooperative loading control method for prefabricated fabricated underground structure splicing. The method comprises the following steps that S1, an assembly to be assembled is hoisted to a construction position through a gantry crane and installed; and S2, measurement parameters are determined; S3, measuring is conducted through all laser rangefinders, the measured values of the two sides are obtained, the seam widths of the assembly and a target part are determined according to the measured values of the two sides, if the seam widths are equal, the assembly and the target part are parallel to each other, and if the seam widths are not equal, the assembly and the target part are not parallel to each other; and S4, the propulsion speed of each positionhydraulic jack is set according to the corresponding seam width. Therefore, the cooperative control work of the multi-point tension point jacks is realized, so that the assembly quality is improved,the structure damage is avoided, and the potential safety hazard of long-term operation of the prefabricated assembly structure is avoided.

Description

technical field [0001] The invention relates to the technical field of prefabricated assembly structure assembly, in particular to a multi-point coordinated loading control method for prefabricated assembly underground structure assembly. Background technique [0002] At present, the artificial in-situ pouring construction technology commonly used in conventional underground structure construction has problems such as long construction period, small space span, many beam-column structures, and structural quality cannot be guaranteed. Construction will greatly affect the efficiency and benefits of project construction. The underground structure adopts prefabricated assembly construction technology and process, which can well overcome the problems existing in the above-mentioned cast-in-place process, and is an important direction for the development of underground structure construction technology in the future. The assembly and installation of prefabricated components is a ...

AI Technical Summary

Problems solved by technology

The assembly and installation of prefabricated components is a key link in the construction of prefabricated underground structures. The installation and construction process often involves multi-point coordinated measurement and multi-point coordinated control. The control process is complicated and difficult to implement manually. The most important method is the method of manual observation, manual judgment and manual tension control, which cannot realize multi-point coordinated measurement and insufficient measurement accuracy, cannot realize multi-point coordinated control, and cannot achieve different tension and tension speeds when different jacks are stretched. The output control of prefabricated structural components leads to problems such as improper assembly of prefabricated structural components, structural damage, extrusion failure of waterproof devices, excessive gaps affecting waterproofing effects, etc., which have a negative impact on the long-term safety hazards and service life of prefabricated structural components.

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