Sponge urban soft soil foundation rainwater garden and construction method

Abstract

The invention discloses a sponge urban soft soil foundation rainwater garden and a construction method, and belongs to the field of sponge urban construction. The sponge urban comprises the soft soilfoundation and the rainwater garden; the rainwater garden comprises a gravel cushion layer, a non-woven geotechnical cloth filter layer, a fine sand cushion layer, a powder sand and a greening landscape which are arranged from bottom to top in sequence; a geogrid is arranged on a structure side slope of the soft soil foundation and the rainwater garden, so that the overall settlement or local uneven settlement of the rainwater garden caused by rainwater seepage is avoided, the stability of the overall structure of the gravel cushion layer, the fine sand cushion layer and the like is effectively guaranteed, and the use function of the rainwater garden is ensured. And therefore, the sponge urban soft soil foundation rainwater garden and the construction method has the advantages of being simple in structure, convenient to construct, short in construction period, low in cost, safe and reliable, environment and the like; and a corresponding construction method is combined, so that high economic benefit and social benefit are achieved.

Description

technical field [0001] The invention relates to the field of sponge city construction, in particular to a sponge city soft soil foundation rainwater garden and a construction method. Background technique [0002] Sponge city plays an overall role in natural ecological function and artificial intervention function, effectively controls rainwater runoff, and realizes the urban development mode of natural storage, natural infiltration and natural purification, which is conducive to the restoration of urban water ecology, conservation of water resources, enhancement of urban waterlogging prevention capabilities, and expansion Effective investment in public goods will improve the quality of new urbanization and promote the harmonious development of man and nature. [0003] The rain garden is the main component of the sponge city. From bottom to top, the general structure is soft soil foundation, gravel cushion, non-woven geotextile filter layer, fine sand cushion, silt soil and p...

AI Technical Summary

Problems solved by technology

Building rain gardens on soft soil foundations, due to the engineering characteristics of high water content, high compressibility, poor water permeability, low strength and long time required for deformation stability of soft soil foundations, it is easy to cause overall settlement or local inadequacies under the action of rainwater seepage. Uniform settlement, causing deformation of the gravel and sand layers, thus affecting the use of the rain garden

Images