Curtain-wrapped pre-pressed drainage structure of a strip-shaped subgrade and its construction method

Abstract

The invention discloses a curtain bonding and prepressing drainage structure of a banded subgrade. The curtain bonding and prepressing drainage structure of the banded subgrade is characterized by comprising curtain structures, drain pipes, drain boards, a sand bedding and a pile-loading layer, wherein the curtain structures are longitudinally and vertically arranged on both sides of the subgrade, the drain pipes are longitudinally arranged at intervals inside the curtain structures, the drain boards are vertically inserted into the subgrade to be in a lateral line in the direction of the subgrade, and multi-line drain boards are vertically positioned at intervals in the direction of the subgrade; the curtain structures and the lower ends of the drain boards all penetrate through a soft soil layer of the subgrade into an impervious layer of the subgrade, the sand bedding is arranged above the subgrade, and the pile-loading layer is arranged on the sand bedding. The invention further discloses a construction method of the curtain bonding and prepressing drainage structure of the banded subgrade, and a bonding effect on the soft soil layer is formed through the curtain structures on both sides of the subgrade and the pile-loading layer on the sand bedding. The curtain bonding and prepressing drainage structure of the banded subgrade and the construction method of the curtain bonding and prepressing drainage structure of the banded subgrade disclosed by the invention are simple in structure, are convenient in construction, are good in treat effect and are wide in application range.

Description

technical field [0001] The invention relates to the treatment of soft ground in geotechnical engineering, in particular to a curtain-wrapped pre-compressed drainage structure for a strip-shaped subgrade and a construction method thereof. Background technique [0002] With the rapid development of my country's economic construction and the increasing shortage of land resources in our country, large-scale tidal flat reclamation and land reclamation projects have been carried out in my country's coastal, river and lake areas, forming large-scale reclamation sites. Most of these sites are artificially dredged (or backfilled) with high water content silt, silty soil, sandy soil and other mud and sand. There are obvious technical problems such as uneven settlement and low foundation bearing capacity on the site. Only after processing can it become a usable land resource. [0003] Over the years, many successful technologies for treating saturated soft soils have been formed in my...

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Problems solved by technology

Most of these sites are artificially dredged (or backfilled) with high water content silt, silty soil, sandy soil and other mud and sand. There are obvious technical problems such as uneven settlement and low foundation bearing capacity on the site. land resource

[0003] Over the years, many successful technologies for treating saturated soft soils have been formed in my country, such as static drainage consolidation methods, dynamic drainage consolidation methods, and static and dynamic drainage consolidation methods, etc., but they are mainly used for one-time treatment of large-area soft soil foundations. , and how to quickly form a strip-shaped subgrade in a large-area dredging site is still in the exploratory stage

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