Assembling type variable cross-section expanding and withdrawing slip form system and construction method thereof

Abstract

The invention belongs to an assembling type variable cross-section expanding and withdrawing slip form system and a construction method thereof. The assembling type variable cross-section expanding and withdrawing slip form system comprises inner and outer trusses and a portal formed by assembled frames, auxiliary discs, inner and outer mold plates, climbing penetration type hydraulic jacks and the like which form a system of a variable cross-section size. The construction method comprises the following steps: respectively manufacturing components such as the assembled frames according to sizes of designed thin-walled hollow piers, respectively assembling the inner and outer trusses applicable to design sizes of the thin-walled hollow piers by using bolts and screw nuts on a construction site, performing overall synchronous lifting on the inner and outer trusses, and the like. A plurality of truss units are formed in a modulation assembling mode, the plurality of the truss units are further assembled into the slip form truss system, and thus the slip form system has the advantages of being convenient and flexible to assemble, good in repeated use, possible in separated conveying, small in material quantity, applicable to pier stud cross sections of different sizes, rapid in construction speed, saving in time and labor, low in construction cost, good in construction quality, good in security and good in use effect.

Description

technical field [0001] The invention belongs to an assembled sliding form system with variable cross-section and a construction method thereof. Background technique [0002] In the construction of railway or highway bridge piers, factors such as unfixed and variable pier column dimensions in various road sections, large differences in pier bottom and top dimensions, and poor construction natural conditions are often encountered, so that the applicable range of fixed slipform trusses for casting reinforced concrete is narrow or limited. Out of service. And it is often necessary to prepare a large number of fixed slipform trusses suitable for different pier column sizes, which not only increases the cost of materials, but also causes time-consuming, laborious, slow speed, high cost and low efficiency in transportation, installation and construction. [0003] For example: 26 bridges are designed for the fifth branch of the Weldia-Mekelle Railway Project in Ethiopia, with a tot...

AI Technical Summary

Problems solved by technology

Moreover, the natural conditions of the construction are harsh, which often cause problems that the fixed slipform trusses are large in size and heavy in weight, and they are deep in the quagmire before they are transported to the Shiwei site. They are scrapped and cannot be used, which seriously affects the construction speed and construction quality.

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