Low-level prepressing drainage dynamic consolidating soft soil foundation processing method

A technology of soft soil foundation and dynamic compaction method, which is applied in basic structure engineering, soil protection, construction, etc., can solve the problems of low surface rebound modulus and strength, low surface compactness, and large post-construction settlement, etc., to achieve The effect of high rebound modulus and strength of the surface layer, high surface compactness, and small post-construction settlement

Inactive Publication Date: 2007-08-22
包国建
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Problems solved by technology

[0002] The existing foundation treatment methods do not work well on soft soil foundations, which also directly affects the construction quality of buildings
Such as: the existing dynamic drainage consolidation method, the depth of soft soil treatment is small; the water collection well is outside the preloading range, which is not convenient for management and maintenance; the water collection well cannot continue to be used during the period of dynamic compaction and ground buildings; the settlement after construction is large
In the high vacuum compaction method, the backfill soil (or sand) needs to be dewatered by intubation; the backfill is limited by the particle size; the post-construction settlement is large; the drainage co

Method used

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  • Low-level prepressing drainage dynamic consolidating soft soil foundation processing method

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Embodiment Construction

[0034] The drawing depicts an embodiment of the invention. In the figure: 1 is layered backfill; 2 is horizontal drainage pipe; 3 is vertical drainage body (plastic drainage board); 4 is dynamic compaction; 5 is geotextile; 6 is medium-coarse sand cushion; 7 is water collection well ; 8 is the soft soil layer; 9 is the hard soil layer.

[0035] The low-level preload drainage dynamic compaction method is used to solve:

[0036] Low-level preloading is used to drain the groundwater from the underlying soft soil into the sand cushion; prevent the filling from being saturated under capillary action and pressure due to the failure of water in the sand cushion to be discharged in time; keep the filling at the optimum water content condition The maximum compactness can be obtained by dynamic compaction; the filling layer can quickly become a super-consolidated hard shell layer to meet the design bearing capacity requirements and make the underlying soft soil meet the post-constructi...

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Abstract

The present invention discloses a soft soil foundation treatment construction method by adopting low-position precompressed dewatered dynamic compaction process. It is characterized by that said method includes the following steps: firstly, building horizontal dewatering network on the foundation surface; then placing vertical dewatering body in the soft soil layer, inserting said vertical dewatering body into the bottom portion of soft soil layer; setting water-collecting wells around the periphery of said soft soil foundation, and making them be communicated with water-collecting channel of precompressed zone edge; back-filling broken stone soil and rolling by layers.

Description

Technical field: [0001] The invention relates to a foundation treatment technology for construction engineering, and is a new method of soil foundation treatment, specifically, a low-level preloading drainage dynamic compaction method "soft soil foundation treatment method. Background technique: [0002] The existing foundation treatment methods are not effective in dealing with soft soil foundations, which also directly affects the construction quality of buildings. Such as: the existing dynamic drainage consolidation method, the depth of soft soil treatment is small; the water collection well is outside the preload range, which is not convenient for management and maintenance; the water collection well cannot continue to be used during the period of dynamic compaction and ground buildings; the settlement after construction is large. In the high vacuum compaction method, the backfill soil (or sand) needs to be dewatered by intubation; the backfill is limited by the particle...

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Application Information

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IPC IPC(8): E02D3/02E02D3/10E02D3/08
Inventor 包国建
Owner 包国建
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