A construction method for controlling compaction degree of silty clay backfill
A technology of silty clay and construction method, which is applied in filling, soil protection, infrastructure engineering, etc. It can solve the problems of unsatisfactory compaction, low water content of dry soil, and poor water permeability of silty soil, etc. problems, to achieve the effect of reducing the number of tamping times, shortening the construction period and saving labor
Active Publication Date: 2019-03-22
CHINA MCC17 GRP
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Problems solved by technology
In particular, the backfilling of the on-site building foundation is designed. Most of this kind of building foundation backfilling is based on small square atrium backfilling. The operation is difficult, and the difference in soil quality, water content control, and selection of compaction machines all have a greater impact on the control of backfill compaction. big impact
It is very difficult to control the compaction degree of backfilling atrial core soil with silty clay. On the one hand, the soil itself is in a silty state and it is difficult to compact it. On the other hand, the silty soil has relatively poor water permeability. Soil, when the moisture content of the soil is too low, the compaction degree of the soil cannot meet the requirements
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[0019] The technical solutions of the present invention will be further specifically described below through specific embodiments, but the present invention is not limited to the embodiments.
[0020] The construction method for controlling the degree of compaction of silty clay backfilling of the present invention mainly includes setting of backfill height markings, leveling and sprinkling the base layer, sprinkling water for backfilling silty clay, and layered backfilling of silty clay (each layer is backfilled twice) , Sprinkle water between layers, tamping and other steps.
[0021] The backfill control line is set, and the backfill height is marked with red paint on the side wall of each grid. The backfill height of each layer is 200mm; through the thickness control line, the thickness of the backfill can be controlled to achieve the full thickness of the compaction process, and the layers are layered. Watering mainly uses this method to make the moisture content of the full th...
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The invention discloses a construction method for controlling backfill compaction degree of silty clay. The construction method comprises the following construction steps: (1) a backfill control line is set; (2) the leveling and the water spraying are performed for a base layer before backfill; (3) water spraying of backfill silty clay: a spray watering form is used for watering and wetting the scene backfill soil; (4) the silty clay is filled layer by layer according to a marking position to guarantee the compaction thickness; (5) silty clay layers are watered; and (6) the backfill soil is compacted. The construction method has the advantages of: simple operation, obvious effect, labor saving, shortening of the construction period and saving of the construction cost investment.
Description
Technical field [0001] The invention relates to a building construction method, and more specifically, to a construction method for controlling the degree of compaction of silty clay backfilling. Background technique [0002] At present, with the development of the construction industry and functional requirements, various public buildings have emerged, such as stadiums, libraries, etc., which have higher and higher requirements for building functions, and the relative engineering quality requirements are higher and higher to meet The requirements of building functions. In particular, it is designed to backfill the foundation of the building on site. Most of this type of building foundation backfill is mainly small square center backfill, which is difficult to operate, soil quality differences, water content control, and the choice of compaction machinery all have more control over the backfill compaction degree. Big impact. It is difficult to control the degree of compaction o...
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IPC IPC(8): E02D17/18E02D3/10E02D3/046
CPCE02D3/046E02D3/10E02D17/18
Inventor戚二舟顾奎任智丁守明梁军
OwnerCHINA MCC17 GRP