Pludge closed water construction method influenced by seawater tides

Abstract

The invention relates to a closed water construction method for a ponding pit influenced by seawater tides. The method comprises the following steps: assembling and welding a steel plate caisson, welding a lifting ring, preparing in the ponding pit in advance, and lifting the steel plate caisson into the ponding pit. The steel plate caisson is formed by assembling and welding steel plates with the thickness of 10 mm, the caisson is divided into a bottomed caisson method and a bottomless caisson method, the bottomed caisson method is adopted for the ponding pit foundation without the pile foundation, and the bottomless caisson method is adopted for the ponding pit foundation with the pile foundation. The vertical external corner and the bottom external corner of the steel plate caisson are both made of 75 * 75 * 6 mm angle steel, the rigidity of the caisson is enhanced, a water stop steel plate with the width of 150 mm and the thickness of 3 mm is welded to the middle of the caisson, in order to hoist the caisson conveniently, 20 round steel hanging rings with the length of 650 mm are welded to the positions, 500 mm away from the edges, of the tops of the four corners of the caisson, and the welding length is 400 mm. The steel plate caisson construction can improve the working efficiency, save the site, shorten the construction period and reduce the cost.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a water-closure construction method for a sump pit affected by seawater tides. Background technique [0002] The project construction site is located in the original landform of the coastal shoal, and the geology is land formed by the reclamation project. The main component of the fill is the gravel soil. [0003] The construction surface of the sump pit excavation is located within the backfilled gravel layer, with strong water permeability. When the sea tide is high, the sump pit will be filled with water, and after the tide ebb, the sump pit will be in an anhydrous state, and the construction of the sump pit will be greatly affected by the sea tide. The construction period of the water-stop curtain will increase, and the cost will increase. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to solve the above-mentioned probl...

AI Technical Summary

Problems solved by technology

When the sea tide is high, the puddle will be full of water. After the tide falls, the puddle will be in an anhydrous state. The construction of the puddle will be greatly affected by the tide of the sea. The puddle is in water, and the construction is difficult. The construction period of the water-stop curtain will increase, and the cost will increase

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