Construction method of pipe gallery construction using formwork trolley

Abstract

The invention discloses a construction method for pipe gallery construction through a formwork trolley, and belongs to the field of pipe gallery construction. The construction method aims to improve the forming quality of concrete and improve the construction efficiency. The construction method comprises the following sequentially-conducted steps that 1, a horizontal hydraulic jack is retracted, so that a lateral formwork rotates slightly with the hinged position of the lateral formwork and a top formwork as the axis so as to be disengaged from a concrete pouring layer; and 2, the top formworkis lowered, so that the top formwork is disengaged from the concrete pouring layer until the formwork trolley for pipe gallery construction can travel freely. According to the construction method, firstly, the top formwork and the lateral formwork are hinged into a whole, so that the integrality and the strength and rigidity properties of the formwork trolley are improved, formwork expansion is avoided, and splicing seams are less; secondly, the self weight of the trolley is low relatively, maneuverability and flexibility are good, so that the efficiency of jack supporting and formwork disengaging is improved, and the moving speed is increased; thirdly, the horizontal hydraulic jack is downsized and miniaturized, materials used by the formworks and a truss are subjected to optimization design, thus waste is avoided, and the manufacturing cost is lowered significantly; and fourthly, through a formwork disengaging mode, stress is safer and more reasonable, and formwork disengaging is quicker and more reliable.

Description

technical field [0001] The invention belongs to the field of pipe gallery construction, in particular to a construction method for pipe gallery construction using formwork trolleys. Background technique [0002] The formwork trolley refers to non-standard equipment for movable formwork for reinforced concrete structures with the same cross-section in narrow and long structures such as tunnels or pipe galleries. Its purpose is to replace the traditional formwork support method, and use the stereotyped formwork construction equipment to set the formwork in place at one time for steel bar binding and concrete pouring. [0003] The formwork trolley used in pipe gallery engineering is in the stage of vigorously rising in China. For example, the application number is CN201710705771.4, and the name is a patent application for a formwork trolley for full-section construction of pipe gallery and its construction method. It discloses a pipe gallery. The construction method of the for...

AI Technical Summary

Problems solved by technology

In this method, during the use of the formwork trolley, the self-weight of the top formwork is completely transmitted to the side formwork, and then to the horizontal jack, so that it cantilever and bear the force. Therefore, the steel trusses such as the longitudinal beams in the middle are required to have good mechanical performance. More complex reinforcement measures require more complex structures and higher material requirements, which also increase the self-weight of the steel truss itself; in addition, the jacks supporting the top form and the jacks for the side forms not only have axial force, but also are subject to bending moments, so , requires a large number of jacks and large specifications, resulting in high cost of formwork trolley and difficult operation

Images