Soft foundation replacement and filling structure and construction method thereof

A construction method and soft foundation technology, applied in infrastructure engineering, roads, roads, etc., can solve the problem of high cost, achieve the effect of reducing the overall cost of the project, reducing differential settlement, and shortening the construction time

Inactive Publication Date: 2021-06-04
华振贵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is characterized by fast reinforcement and short construction period, but the cost is high, and it is not suitable for soils with too small permeability coefficient.

Method used

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  • Soft foundation replacement and filling structure and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The construction method of the above-mentioned soft base exchange structure includes the following steps:

[0050] (1) The prototype stream base is excavated to form a primary subgrade processing layer 1;

[0051] (2) Prefabricated foam concrete, spare;

[0052] (3) Pouring foam concrete on the primary sub-path processing layer 1, forming a foam concrete layer 2; wherein the foam concrete layer adopts a layered construction process, 30 cm per layer;

[0053] (4) The pavement structure layer 3 is laid on the foam concrete layer 2, i.e., the soft base flux structure.

[0054] Among them, the foam concrete includes a weight of the following weight: 50 kg of waste generated during mineral crushing and screening process, 50 kg of gelling material; the preparation method is: (1) weigh the weight of the foam concrete; (2) Mineral crushing, waste produced during screening is mixed; (3) mixed or grinding the gelling material, sieving,

Embodiment 2

[0056] The construction method of the above-mentioned soft base exchange structure includes the following steps:

[0057] (1) Piling on the foundation to form a primary sub-processing layer 1;

[0058] (2) Prefabricated foam concrete and foam concrete blocks, spare;

[0059] (3) Pouring the foam concrete by foam concrete block 1, forming a foam concrete layer 2; wherein the foam concrete layer is a layered construction process, 100 cm per layer;

[0060] (4) The pavement structure layer 3 is laid on the foam concrete layer 2, i.e., the soft base flux structure.

[0061] Among them, the foam concrete includes a weight of the following weight: mineral crushing, waste and non-ferrous metal waste 148kg, ceiling material 2kg; preparation method: (1) Weigh the weight of the above foam concrete (2) Mix the mineral crush, the waste produced during the screening process and the non-ferrous metal waste residue; (3) mixed or grinding the gelling material, sieving,

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Abstract

The invention discloses a soft foundation replacement and filling structure which is sequentially provided with an original roadbed treatment layer, a foam concrete layer and a pavement structure layer from bottom to top. Wherein the foam concrete layer is of a frame structure formed by pouring foam concrete, or is of a frame structure formed by firstly filling foam concrete precast blocks and then pouring the foam concrete; the construction method comprises the following steps: (1) excavating an original roadbed, or piling on the foundation; (2) prefabricating foam concrete; or prefabricating foam concrete and foam concrete blocks; (3) forming a foam concrete layer; and (4) paving a pavement structure layer. When the soft foundation replacement and filling structure is constructed, vibration and compaction are not needed, and an original roadbed cannot be disturbed; and the construction process of prefabrication and cast-in-place is adopted, so that the construction time can be greatly shortened, and the comprehensive construction cost of engineering is reduced.

Description

Technical field [0001] The present invention relates to the field of subgrade engineering technology, and more particularly to a soft base displacement structure and a construction method thereof. Background technique [0002] Soft Soil Foundation (referred to as "soft base") refers to a weak soil layer with low strength and high compression, most of which contains a certain organic substance. The soft base mainly consists of a lot of soil, a porous organic soil, peat and loose sand, and a loose sand, and the filling and structural stability are poor, and the filling and structural stability are poor due to soft soil. Low intensity, large deposition, often brings great harm to road projects, such as improper treatment, will have a great impact on construction and use of roads. [0003] At present, the treatment of soft groups in highway engineering mainly uses the following methods: [0004] 1. Patch preloading method: This method is to use a filling load that is greater than or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/00E01C3/04E02D27/12
CPCE01C3/00E01C3/04E02D27/12E01C3/003
Inventor 华振贵张建华许言言
Owner 华振贵
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