Prograding mudflat foundation reinforcing device and construction method thereof

Abstract

The invention discloses a prograding mudflat foundation reinforcing device and a construction method thereof. The reinforcing device comprises hollow steel plates, hollow steel cylinders, steel strands, solid steel balls, a sand cushion layer, a vacuum device, an electro-osmosis device and a vacuum sealing film. The hollow steel plates are transversely laid, the hollow steel cylinders are arrangedat the joints of the hollow steel plates, and the hollow steel plates and the hollow steel cylinders are connected into a whole through bolts. One ends of the steel strands are connected with the solid steel balls, and the other ends of the steel strands are connected with a positive electrode of the electro-osmosis device and fixed to the middle of the hollow steel plate. The hollow steel cylinders are connected with a negative electrode of the electro-osmosis device. The sand cushion layer is arranged on the upper portions of the hollow steel plates, the vacuum device is embedded in the sand cushion layer, and the vacuum sealing film is laid at the top of the sand cushion layer. The method comprises the following steps that the solid steel balls, the hollow steel plates, the hollow steel cylinders, the sand cushion layer, the vacuum device, the electro-osmosis device and the vacuum sealing film are installed; and vacuumizing, sedimentation consolidation, electrifying, sedimentationconsolidation and vacuum consolidation are conducted. According to the prograding mudflat foundation reinforcing device and the construction method thereof, the shear strength of soil and the bearingcapacity of a foundation are improved while it is guaranteed that the sedimentation and the sedimentation difference are within a control range, and the water content is reduced.

Description

technical field [0001] The invention relates to tidal flat foundation reinforcement, in particular to a silt-long tidal flat foundation reinforcement device and a construction method thereof. Background technique [0002] Coastal tidal flats are not only land, but also part of the sea area. They are mainly composed of three parts: supratidal zone, intertidal zone and subtidal zone in different spatial positions. beaches and biological beaches. The most widely distributed coastal tidal flats in my country are intertidal tidal flats. Due to the effect of tides, the tidal flats in the intertidal zone are submerged at high tide and exposed at low tide, which is an important reserve land resource in my country. It has the characteristics of large area, concentrated distribution, good location conditions, and great potential for comprehensive development of agriculture, animal husbandry, fishery and ecotourism. , belonging to a special composite ecosystem. Under the influence of...

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Problems solved by technology

Traditional preloading methods include vacuum preloading and surcharge preloading. In comparison, the vacuum preloading method is cleaner and easier to control than the surcharge preloading method, but it takes longer to reinforce

The electroosmosis method is suitable for soft clay foundations with small permeability coefficients, and has a faster reinforcement rate, but it is difficult to control the uniformity of reinforcement, and the reinforcement effect is not ideal

At present, the main trend of tidal flat foundation reinforcement research is to explore the use of a new type of curing agent that is more environmentally friendly and whose mixing ratio can meet the curing requirements combined with grouting and stirring to strengthen the foundation. This method is difficult to avoid water and soil environmental pollution, and problems such as uneven mixing It will lead to inconsistent solidification degree of soil at different depths, and there are certain safety hazards and defects

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