Tower body tilt correction method

Abstract

A tower body tilt correction method comprises the following steps: measuring the tilt direction and amplitude of a tower body; enabling the tower body to be independent and free from an external force; breaking down a grout layer at the bottom; loosening foundation bolts; digging out backfill on the tilt side, laying rubble and gravel, and keeping the ground pressure to be 13.5 N / cm<2> or above; placing sleeper cribs, and putting a steel plate on the sleeper cribs and a tower body foundation; manufacturing jacking supports, wherein each jacking support is formed by welding a cross beam and an oblique beam which form an included angle of 45 degrees, and the oblique beams and the cross beams are welded on a skirt of the tower body; checking the bearing force and the weld strength; selecting jacks according to the weight and the tilt amplitude of the tower body; placing the jacks between the cross beams and the steel plate; lowering bottom sizing blocks on symmetric sides of tilt of the tower body by 10-20 mm; starting up the jacks, and judging to be qualified when the scale difference in all directions, measured by total stations, is smaller than 30 mm; filling the bottom of the tower body with sizing blocks; fastening the foundation bolts; re-measuring the perpendicularity of the tower body; grouting the bottom of the tower body; and re-connecting dismounted parts. The tower body tilt correction method is simple and convenient to operate and good in correction effect, so that the construction cost is greatly lowered.

Description

technical field [0001] The invention relates to the field of tower body inclination correction, in particular to a method for correcting tower body inclination. Background technique [0002] In the construction project of a company in Pinghu with an annual output of 320,000 tons of acrylic acid and 300,000 tons of esters, the tower body of the main device after construction is often affected by the uneven settlement of the foundation, the welding stress of the gas phase pipe, or the connection structure between the tower body and the gas phase pipe. The tilt occurs due to factors such as force. When the inclination of the tower body exceeds the upper limit specified in the "Code for Construction Quality Acceptance of Petrochemical Static Equipment Installation Engineering" GB50461-2008 (the verticality of the tower body is less than or equal to H / 1000 and not greater than 50mm), the tower body must be inspected. Correction to meet standard specification requirements. Howev...

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Problems solved by technology

However, there is currently no suitable method for correcting the inclination of the tower body. Although the inclination correction method of other objects can be borrowed, the correction effect is very poor, and the cost is high and time-consuming, which causes a lot of waste of manpower and material resources.

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