Waterproof construction method for latticed column to penetrate through foundation slab

Abstract

The invention discloses a waterproof construction method for a latticed column to penetrate through a foundation slab. The waterproof construction method is characterized in that the method comprisesthe following steps that a, when earth excavation is conducted and manual bottom cleaning is conducted to the designed elevation of the pit bottom, concrete chiseling and cleaning are performed; b, foundation slab cushion concrete is poured; c, 50 mm building ointment is evenly painted on a latticed column cushion; d, the latticed column is composed of angle steel and a batten plate; e, an inner water stop steel plate is located on an inner supporting frame for welding; and f, all the welding between an outer water stop steel plate and the latticed column, the inner water stop steel plate andthe latticed column, and the latticed column and the inner supporting frame is pained with a weather resistant adhesive and sealed. The waterproof construction method for the latticed column to penetrate through the foundation slab has the advantages that the latticed column is simple in waterproof structure and convenient to manufacture, the engineering quality is safe and reliable, a closed water stop ring is formed in the middle of the foundation slab, the hidden danger of water seepage is effectively reduced, secondary waterproof fortification is added at the bottom of the column, the waterproof effect is effectively enhanced, construction is convenient, operation is simple, the efficiency is high, and the engineering cost is lowered.

Description

technical field [0001] The invention relates to a waterproof construction method, in particular to a waterproof construction method in which a lattice column penetrates a base plate. Background technique [0002] In recent years, lattice columns, as a part of large-scale foundation pit support systems, have increasingly appeared in civil construction super high-rise projects, and the forms they appear in are also more diverse, from the early section steel or steel plate design to biaxial symmetry or single The axisymmetric design, and later the lattice column with variable cross-section, has been continuously updated day by day, which also reflects the convenience, economy and applicability of the lattice column. Big change. [0003] Existing common practice is to install a ring of water-swellable rubber water-stop strips around the periphery of the bottom of the foundation base plate, and then weld a water-stop steel plate around the lattice column. Water-swelling water-s...

AI Technical Summary

Problems solved by technology

Although the invention controls the water in the lattice column to prevent seepage water from penetrating inside and outside, but the internal sealing of the bottom of the lattice column is poor, which will still cause water seepage and cause the overall waterproof effect to be poor

At the same time, the inner water-stop steel plate of the invention has no supporting frame for welding, which is not easy to construct. It is difficult for workers to operate, and the construction efficiency is slow. The location of the two-way reinforcement is clarified

[0005] Therefore, there are above-mentioned inconveniences and problems in the known waterproof structure of the lattice column penetrating the base plate.

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