Method for building harbor wharf based on soft soil

Abstract

The invention provides a method for building a harbor wharf based on soft soil, which comprises the following steps of: building a plurality of caisson platforms on the ground; floating the plurality of caisson platforms and hauling to a preset position, sinking the caisson platforms, and leading the caisson platforms to be connected with each other so as to be formed into a pile platform on the sea of the harbor wharf; inserting a hollow thin-wall pile with overlarge cross section into the bottom of the sea; building a concrete platform of the harbor wharf at the tope of each caisson platform; loading heavy materials to the concrete platform of the harbor wharf; and filling the ground in a blowing way to reinforce the ground and deeply dig a harbor basin. The step of inserting the hollow thin-wall pile with the overlarge cross section into the bottom of the sea comprises the steps of filling silts and stones at the upper part of the hollow thin-wall pile or loading the heavy materials to downward sink the pile; inserting the hollow thin-wall pile into the bottom of the sea with a pile compressing device; digging the silts in the hollow thin-wall pile to downward sink the pile; and vacuumizing the upper part of the hollow thin-wall pile to downward sink the pile. The method for building the harbor wharf has high construction efficiency, low cost and good economic benefit.

Description

technical field [0001] The invention relates to the field of hydraulic structures for constructing harbor wharves. Background technique [0002] The seaport is the sea gateway of the country and the center of shipping and trade. The construction of the seaport has great significance and economic benefits. [0003] The seaport wharf is the most important hydraulic structure for seaport construction. The seaport wharf is built on the soft soil foundation. Due to the high water content of the soft soil foundation, a very thick silt layer is formed. The bearing capacity of the silt layer is very low. Generally, high piles are used. Beam-slab structure type, the wharf pile platform is supported by large-diameter steel pipe piles or prestressed concrete hollow piles, the depth of the pipe piles exceeds the soft soil layer, reaching the soil layer with high bearing capacity, and the weight of the seaport wharf is supported on the pipe piles. The upper parts of the pipe piles are p...

AI Technical Summary

Problems solved by technology

For example, the design water depth of a wharf with a displacement of 200,000 tons should not be less than -18 meters, the elevation of the wharf is +6 meters, the height of the caisson is greater than 24 meters, and its length and width are also large, so the volume and weight are large, which is difficult for processing , transportation, positioning and installation all cause great difficulties, and the cost of building a seaport wharf with a caisson structure is high, the investment is large, and the construction period is long

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