Collapsible loess foundation rubble frame structure reinforcement system and reinforcement method

Abstract

The invention belongs to the field of foundation reinforcement engineering, and relates to a collapsible loess foundation rubble frame structure reinforcement system and a reinforcement method. The reinforcement system comprises reinforced gravel piles, an earthwork standard room reinforced gravel layer, an EVA (Ethylene-Vnyl Acetate) waterproof plate, a geofabric pad layer and a concrete pavement layer. The reinforced gravel piles lengthways stretch into a collapsible loess foundation layer to be reinforced and are arranged in parallel; the earthwork standard room reinforced gravel layer is paved on the upper surfaces of the reinforced gravel piles; the concrete pavement layer, the geofabric pad layer and the EVA waterproof plate are sequentially paved on the upper surface of the earthwork standard room reinforced gravel layer from top to bottom; and the reinforced gravel piles and the earthwork standard room reinforced gravel layer are jointly grouted through pre-embedded grouting pipes and form the integral reinforced gravel frame structure reinforcement system. The invention provides the collapsible loess foundation rubble frame structure reinforcement system with reasonable structural mechanical property, good integrality and impermeability, and high carrying capacity, and the reinforcement method.

Description

technical field [0001] The invention belongs to the field of foundation reinforcement engineering, and relates to a loess foundation reinforcement system and a reinforcement method, in particular to a collapsible loess foundation gravel frame structure reinforcement system and a reinforcement method. Background technique [0002] my country is the country with the widest distribution and largest thickness of loess in the world. Collapsible loess is widely distributed in the northeast, northwest, central and eastern parts of China, accounting for about 6.6% of the country's land area. Collapsible loess has relatively uniform soil quality, loose structure, and developed pores, because it has special components and properties different from ordinary fine-grained soil. In the dry state, the small soil has high strength and low compressibility, but after soaking in water, the soil structure is rapidly destroyed, resulting in significant subsidence deformation, the strength of the...

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Problems solved by technology

In the dry state, the small soil has high strength and low compressibility, but after soaking in water, the soil structure is rapidly destroyed, resulting in significant subsidence and deformation, the strength of the soil decreases rapidly, and the bearing capacity of the foundation is greatly reduced.

[0003] Because collapsible loess has the above-mentioned adverse engineering geological characteristics, and the collapsible deformation of collapsible loess after soaking in water is localized, sudden and uneven, resulting in uneven settlement of buildings or structures built on it , and with the appearance of cracks, it seriously affects the safety of the building, and the potential hazards are huge

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