Alternate and step-by-step jacking device and construction method for hyperbolic closed-section steel grid structure

Abstract

The present invention relates to a device and construction method for alternatively jacking a hyperbolical closed type steel grid structure step by step, and the problem that an existing fixed jacking device cannot move in the radial direction and cannot jack a vertical hyperbolical closed type steel grid structure is solved. The device comprises slip tracks; a cross-shaped platform is disposed on each slip track; each cross-shaped platform is provided with rolling wheels; four corners of each cross-shaped platform are provided with vertical supporting legs; supporting bars are connected between the adjacent vertical supporting legs; the tops of the vertical supporting legs are provided with load-bearing platforms; each load-bearing platform is provided with a position adjusting channel steel track; a jacking supporting block is disposed in each position adjusting channel steel track; an upper surface of each jacking supporting block is provided with a spherical groove; a hydraulic jack is disposed on each cross-shaped platform; the top of each hydraulic jack is connected with the vertical supporting legs; and the bottom of each hydraulic jack is connected with a telescoping support. The device and construction can facilitate jacking and installation of the structure, and synchronism and convenience of the jacking and installation are improved.

Description

technical field [0001] The invention relates to a jacking technology for construction engineering, in particular to an alternate step-by-step jacking device for a hyperbolic closed steel grid structure and a construction method thereof. Background technique [0002] At present, the development of nuclear power can effectively alleviate the increasingly tense domestic power supply. Therefore, the domestic demand for the capacity of nuclear power plants continues to expand. At the same time, the industry has also put forward higher requirements for the diameter and height of cooling towers, an important part of nuclear power units. [0003] The reinforced concrete hyperbolic cooling towers commonly used in the industry have been difficult to meet the process requirements, and due to the continuous increase in the height of the tower body and the span (diameter) of the tower bottom, the difficulty of its construction has increased sharply and the construction period has been co...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the existing fixed jacking device cannot move radially and cannot lift the vertical hyperbolic closed steel grid structure, the present invention provides an alternate step-by-step jacking device for the hyperbolic closed steel grid structure and its construction method

[0009] The jacking device designed for this construction device can move radially and up and down, and is lifted alternately by two sets of mobile jacking devices until the installation is completed, which overcomes the problem that the existing fixed jacking device cannot move radially and cannot lift the vertical hyperbolic Problems with closed-section steel grid structures

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