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A Reinforcement Construction Technology of Soft Soil Subgrade

A construction technology and technology of soft soil subgrade, which is applied in the directions of roads, roads, buildings, etc., can solve the problems of affecting the load stability of the road section reinforced by soft foundation, inconsistent vertical height of the bottom end of the immersed tube, etc., and achieve excellent structural strength and hardness, The effect of improving the ability to hang on the wall and improving the stability

Active Publication Date: 2020-07-03
江苏惠淳建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, adjacent immersed tubes are usually set opposite to each other. After they are deeply buried in the ground, when the immersed tubes at different positions are subjected to heavy load pressure, different degrees of settlement will occur, resulting in the vertical deformation at the bottom of the immersed tube. The vertical height is inconsistent, which affects the load stability of the soft foundation reinforcement road section

Method used

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  • A Reinforcement Construction Technology of Soft Soil Subgrade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A kind of preparation process of acrylate-SEBS copolymer is as follows:

[0050] (1) Ingredients: Weigh 20 parts of methyl acrylate, 5 parts of isooctyl acrylate, 10 parts of SEBS thermoplastic elastomer, 10 parts of reinforcing filler inclusions, 5 parts of acrylic emulsion film former, N, N methylenebispropylene 1 part of amide, 0.5 part of dicumyl peroxide and 3 parts of acrylic dispersant;

[0051] (2) Preparation of reinforcing filler inclusions: use polyborosiloxane melt to wrap nano-calcium carbonate, the weight ratio of nano-calcium carbonate to polyborosiloxane is 2:1, and carry out low temperature at -40°C after wrapping Freeze for 24 hours, sinter at 300°C for 30 minutes after freezing, and pulverize the sintered body after cooling to room temperature;

[0052] (3) Preparation of acrylic emulsion film former: (1) Pre-emulsification: add 100 parts of water, 3 parts of emulsifier, 5 parts of acrylamide to the reaction bottle, add 5 parts of styrene and 10 part...

Embodiment 2

[0058] A kind of preparation process of acrylate-SEBS copolymer is as follows:

[0059] (1) Ingredients: Weigh 22 parts of methyl acrylate, 7 parts of isooctyl acrylate, 10 parts of SEBS thermoplastic elastomer, 14 parts of reinforcing filler inclusions, 5 parts of acrylic emulsion film former, N, N methylenebispropylene 1 part of amide, 0.7 part of dicumyl peroxide and 3 parts of acrylic dispersant;

[0060] (2) Preparation of reinforcing filler inclusions: use polyborosiloxane melt to wrap nano-calcium carbonate, the weight ratio of nano-calcium carbonate to polyborosiloxane is 2:1, and carry out low temperature at -40°C after wrapping Freeze for 24 hours, sinter at 300°C for 30 minutes after freezing, and pulverize the sintered body after cooling to room temperature;

[0061] (3) Preparation of acrylic emulsion film former: (1) Pre-emulsification: add 100 parts of water, 3 parts of emulsifier, 5 parts of acrylamide to the reaction bottle, add 5 parts of styrene and 10 part...

Embodiment 3

[0067] A kind of preparation process of acrylate-SEBS copolymer is as follows:

[0068] (1) Ingredients: Weigh 23 parts of methyl acrylate, 8 parts of isooctyl acrylate, 12 parts of SEBS thermoplastic elastomer, 18 parts of reinforcing filler inclusions, 8 parts of acrylic emulsion film former, N, N methylenebispropylene 2 parts of amide, 0.8 parts of dicumyl peroxide and 3 parts of acrylic dispersant;

[0069] (2) Preparation of reinforcing filler inclusions: use polyborosiloxane melt to wrap nano-calcium carbonate, the weight ratio of nano-calcium carbonate to polyborosiloxane is 2:1, and carry out low temperature at -40°C after wrapping Freeze for 24 hours, sinter at 300°C for 30 minutes after freezing, and pulverize the sintered body after cooling to room temperature;

[0070] (3) Preparation of acrylic emulsion film former: (1) Pre-emulsification: add 100 parts of water, 3 parts of emulsifier, 5 parts of acrylamide to the reaction bottle, add 5 parts of styrene and 10 pa...

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Abstract

The invention discloses a reinforcement construction technology of a soft soil subgrade. According to the technical scheme, the reinforcement construction technology is characterized in that the reinforcement construction technology comprises the following steps that (1) a construction range is delimited, and a sand-gravel layer is laid; (2) a reinforcing cage skeleton is erected; (3) a gravel layer is filled; (4) a heavy load being 5t / m2 is applied to the gravel layer; (5) drilling is conducted, and pouring is conducted to form a pressure-sensitive type adhesive layer; (6) a load-bearing column is inserted; and (7) a volcanic layer, a concrete layer and an asphalt surface layer are laid on the gravel layer in sequence, the load-bearing column is inserted into the gravel layer, the load-bearing column corresponds to an immersed tube in a contrast document, the pressure-sensitive type adhesive layer firmly binds the load-bearing column in a drilled hole, after heavy load pressure is applied, the height of the bottom end of the immersed tube maintains consistent, and load-bearing stability of a reinforced road section is obviously improved.

Description

technical field [0001] The invention relates to road construction, in particular to a reinforcement construction technology for soft soil roadbed. Background technique [0002] With the continuous development of municipal infrastructure construction, there are many effective construction techniques in the construction of municipal road engineering in soft soil. However, there are quite a lot of silty soft soil in coastal areas, and the silty soft soil layer is relatively thick, even exceeding 15 meters in some areas. For such a deep soft foundation road section, the stability of embankment filling is extremely poor. Traditional construction methods such as filling replacement, drainage board consolidation, powder spraying piles, cement mixing piles, etc. are used in the prior art for reinforcement, but the engineering quality is difficult to achieve The effect is relatively ideal, but the post-construction settlement and vehicle jumping of the soft foundation reinforcement ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C3/04
CPCE01C3/04
Inventor 邢小兵王诗蕾韩宏杨三红邢建
Owner 江苏惠淳建设有限公司
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