An expansive soil ecological support structure based on recycled pervious concrete and a construction method thereof

CN117266199BActive Publication Date: 2026-07-07GUANGXI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGXI UNIV
Filing Date
2023-10-19
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Expansive soil slopes are susceptible to damage from atmospheric wet and dry cycles. Existing support structures suffer from complex construction, high maintenance costs, and unsatisfactory results. In particular, flexible support and ecological slope protection are inadequate in terms of soil and water conservation capacity and vegetation growth environment.

Method used

The structure employs recycled permeable concrete, including a waterproof membrane coating layer, a recycled permeable concrete layer, a backfill layer, and retaining walls. It utilizes recycled aggregates and biodegradable materials, combined with a sawtooth structure and energy-absorbing pads, to form a water storage and drainage system. With the addition of vegetation, it achieves deformation resistance, moisture retention, and seepage prevention.

Benefits of technology

It effectively prevents rainwater from entering the expansive soil slope, ensures slope stability, enables resource reuse, promotes vegetation growth, reduces landslides, and possesses flexible deformation capacity and water stability. It solves the technical problems of expansive soil slopes in existing technologies, effectively addresses the water stability issues of expansive soil slopes, and achieves the long-term effects of reuse of engineering waste soil and ecological slope protection.

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Abstract

The application relates to the technical field of slope engineering prevention, in particular to an expansive soil ecological supporting structure based on recycled water permeable concrete and a construction method, which comprises a waterproof film coating layer, a recycled water permeable concrete layer, a backfill soil layer, a retaining board and a bottom EPS foam board, the waterproof film coating layer is formed by uniformly spraying waterproof film coating on a slope surface, the recycled water permeable concrete is sawtooth-shaped and is poured on the waterproof film coating layer, the backfill soil is covered on the recycled water permeable concrete layer, the retaining board is arranged at the bottom of the expansive soil slope, and the bottom EPS foam board is arranged between the retaining board and the expansive soil slope. Based on the concept of a sponge city, the application forms a slope water storage structure by using the recycled water permeable concrete and the waterproof film coating layer, achieves the effect of 'flood drainage and drought replenishment', reuses engineering slag soil and waste degradable materials, achieves the purpose of low carbon, simultaneously utilizes the anchoring effect of the vegetation root system, and realizes long-term green and low-carbon protection of the expansive soil slope.
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