Method for demoulding and turning of concrete prefabricated column

Abstract

The invention relates to a method for demolding and turning of a concrete prefabricated column. The method comprises the following steps that a lifting rope penetrates through a lifting ring, the prefabricated column is lifted to a certain height through external lifting equipment, the end of the lifted prefabricated column is placed into a round roller rod, the lifting height is slowly lowered to complete demolding of the prefabricated column, the prefabricated column is dragged outwards by 1 / 3 of the width of the prefabricated column through a hoist chain block, at the moment, a wood gasket is arranged in the turning fulcrum position of the back surface of the lifting ring, turning of the prefabricated column is completed through the external lifting equipment, then a sole timber is placed in the set position, and the prefabricated column is lifted to the sole timber through the external lifting equipment. The problems that in the prior art, horse stools need to be adopted for assisting in turning, prefabricated columns are prone to tipping over and breaking, and potential safety hazards exist are solved; the operation method is simple, and construction is convenient; the turning efficiency of the prefabricated column is effectively improved, and the damage rate of the prefabricated column is greatly reduced; and the potential safety hazard of turning of the prefabricated column is reduced.

Description

technical field [0001] The invention relates to the field of hoisting of prefabricated concrete columns, in particular to a method for demoulding and turning over prefabricated concrete columns. Background technique [0002] Due to the large size and weight of concrete prefabricated columns, a single column usually weighs 20 to 50 tons. Due to the limitation of the construction site, three prefabricated columns are generally used for prefabrication at the construction site. Direct hoisting is easy to break. Before installation and hoisting, it must be turned 90 degrees horizontally and placed on the wooden spacer. After the three columns are stacked and poured, the overall stacking height will reach more than 1.5m, and there is a strong adhesive force between the columns. At present, a steel structure horse stool is generally installed on the back of the lifting ring for support when turning over. The bearing capacity of the foundation at the position of the horse stool is h...

AI Technical Summary

Problems solved by technology

[0002] Due to the large size and weight of concrete prefabricated columns, a single column usually weighs 20 to 50 tons. Due to the limitation of the construction site, three prefabricated columns are generally used for prefabrication at the construction site. Direct hoisting is easy to break. Before installation and hoisting, it must be turned 90 degrees horizontally and placed on the wooden spacer. After the three columns are stacked and poured, the overall stacking height will reach more than 1.5m, and there is a strong adhesive force between the columns. At present, a steel structure horse stool is generally installed on the back of the lifting ring for support when turning over. The bearing capacity of the foundation at the position of the horse stool is high, and a slight slip of the prefabricated column may cause the crane to overturn or the prefabricated column to break, causing serious safety and quality accidents , therefore, in order to solve the above problems, a method for demoulding and turning over of prefabricated concrete columns is now proposed

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