Method for treating high-filled foundation in deep silt region

Abstract

The invention discloses a method for treating a high-filled foundation in a deep silt region. The method is implemented through the following steps of: by adopting a mode of squeezing and thickening a sand layer, inserting a drain board, filling a dead load, strongly tampering a mobile load and loading layer by layer, combining a silt layer at the deep silt region with a high-filled soil layer by virtue of the sand layer; combining the squeezed silt and rain of sludge with the filled dead load and the mobile load, and carrying out high-filled rapid backfill; and while strongly tampering layer by layer, carrying out layer-by-layer progressive loading so as to realize the rapid drainage consolidation of the deep silt region. The foundation treatment method can be used for realizing the rapid construction of a high fill and the rapid consolidation of the deep silt region, is a smart combination of technical requirements of staged loading and foundation treatment of construction working procedures, and is practical, obvious in effect, safe and feasible.

Description

technical field [0001] The invention relates to construction engineering technology, and is a method for treating soft soil foundation, in particular to a method for treating foundation in deep silt area combined with high filling construction. Background technique [0002] In construction engineering, surcharge preloading or vacuum preloading methods are usually used for foundation treatment in deep silt areas. Due to the single method, the drainage and consolidation period is long; the upper part of deep silt areas is implemented with high fill construction. If the foundation treatment in the silt area is followed by high filling construction, it will take a longer construction period; if the foundation in the deep silt area is not properly treated, safety problems such as fill slippage and subsidence will easily occur during high fill construction; every day of high fill construction Each process will have an important impact on the drainage consolidation of the deep silt...

AI Technical Summary

Problems solved by technology

[0002] In construction engineering, surcharge preloading or vacuum preloading methods are usually used for foundation treatment in deep silt areas. Due to the single method, the drainage and consolidation period is long; the upper part of deep silt areas is implemented with high fill construction. If the foundation treatment in the silt area is followed by high filling construction, it will take a longer construction period; if the foundation in the deep silt area is not properly treated, safety problems such as fill slippage and subsidence will easily occur during high fill construction; every day of high fill construction Each process will have an important impact on the drainage consolidation of the deep silt area

For example, the site leveling project of a super-large iron and steel project is located in an island in the southeast of my country. The silt in the lower part of the estuary area is relatively deep, and the upper part needs to be backfilled with earthwork. The silt in the deep silt area (e≈1.85; w≈67.5%; fa≈ 45kPa) with a depth of 10.0-23.0m; the thickness of the upper high fill is about 15.0m; the foundation treatment involves deep silt and high fill construction, and the construction period is tight, the task is heavy and difficult

Images