A silt-long tidal flat foundation reinforcement device and its construction method

Abstract

The invention discloses a silt-long tidal flat foundation reinforcement device and a construction method thereof. The reinforcement device includes a hollow steel plate, a hollow steel cylinder, a steel strand, a solid steel ball, a sand cushion, a vacuum device, an electroosmotic device and a vacuum Sealing film, hollow steel plates are laid horizontally, hollow steel cylinders are set at the joints of the hollow steel plates, connected as a whole with bolts, one end of the steel strand is connected with the hollow steel ball, the other end is connected with the positive electrode of the electroosmosis device and fixed in the middle of the hollow steel plate, the hollow steel The cylinder is connected with the negative electrode of the electroosmosis device, a sand cushion is set above the hollow steel plate, a vacuum device is embedded in the sand cushion, and a vacuum sealing film is laid on the top of the sand cushion. The method comprises the following steps: installing a solid steel ball, a hollow steel plate, a hollow steel cylinder, a sand cushion, a vacuum device, an electroosmosis device, and a vacuum sealing film; vacuuming, settlement consolidation, electrification, settlement consolidation, and vacuum consolidation . The invention ensures that the settlement and the settlement difference are within the control range, simultaneously improves the shear strength of the soil and the bearing capacity of the foundation, and reduces the water content.

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...

AI Technical Summary

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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