CN109736342A - A kind of soil cement mattress layer and its construction method in hydraulic engineering composite foundation - Google Patents
A kind of soil cement mattress layer and its construction method in hydraulic engineering composite foundation Download PDFInfo
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- CN109736342A CN109736342A CN201811627511.0A CN201811627511A CN109736342A CN 109736342 A CN109736342 A CN 109736342A CN 201811627511 A CN201811627511 A CN 201811627511A CN 109736342 A CN109736342 A CN 109736342A
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- soil cement
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Abstract
The present invention relates to a kind of soil cement mattress layers, are made of following substances in weight percentage: cement 8% ~ 18%, water 0 ~ 10%, surplus are clay.Its construction method in hydraulic engineering composite foundation, including excavation pit are laid with three steps such as soil cement mattress layer and ground construction.Present invention layout is simple and compact, and it is convenient to construct, low in cost, it can not only play the role of adjusting stress distribution between stake soil, due also to permeability coefficient of cement soil is smaller, there is good seepage capability, therefore solve the disadvantage that traditional broken stone cushion layer becomes seepage channel.
Description
Technical field
The present invention relates to a kind of soil cement mattress layer and its construction method in hydraulic engineering composite foundation, dependent territory, which is built, to be applied
Work technical field.
Background technique
Mattress layer is a kind of method that stress distribution between stake soil is adjusted in composite foundation.Mattress layer is applied not only to CFG,
It is also used for broken stone pile, tubular pole etc., with form compound foundation, guarantees the collective effect of stake and inter-pile soil.
In industry with civil buildings, mattress layer generallys use 0.1 ~ 0.3 meter of thickness of blotter.In hydraulic engineering,
Such as sluice, pumping plant building, for upstream and downstream there are certain water-head, seepage-proof stable is that control is had in design process
One of factor.For the hydraulic structure using composite foundation, composite foundation is according to broken stone cushion layer, then mattress layer will become
Seepage channel, antiseepage be difficult to ensure safely, therefore is directed to this problem, there is an urgent need to develop a kind of novel mattress layer structure,
To meet the needs of actual use.
Summary of the invention
The object of the invention, which is that, overcomes above-mentioned deficiency, provide a kind of soil cement mattress layer and its hydraulic engineering compoundly
Construction method in base.
To achieve the above object, the present invention is to be achieved through the following technical solutions:
A kind of soil cement mattress layer, is made of following substances in weight percentage: cement 8% ~ 18%, water 0 ~ 10%, surplus are clay.
Further, the clay is the solid, powdery knot that granule content of the partial size no more than 0.005 millimeter is more than 50%
Structure.
A kind of construction method of soil cement mattress layer in hydraulic engineering composite foundation, comprising the following steps:
The first step, excavation pit are compacted, then first according to construction drawing in designated position excavation pit, and to bottom of foundation ditch
The concrete precast pile that several axis and level perpendicular distribution are squeezed into bottom of foundation ditch constructs concrete prefabricated pile foundation, so
Concrete precast pile is backfilled and is compacted afterwards；
Second step is laid with soil cement mattress layer, cement, water and clay is added to together in mixing plant by use ratio and carried out
It is stirred, then the mixture after stirring is uniformly laid on to the concrete prefabricated pile foundation after the backfill of first step excavation pit
Upper surface obtains soil cement mattress layer after compacting, and the soil cement mattress layer being laid with is with a thickness of 0.2 ~ 0.5 meter；
Third step, ground construction after completing second step construction, can directly carry out on the soil cement mattress layer that second step is laid with
Reinforced concrete floor construction.
Further, in the first step, concrete precast pile be height be not less than 7 meters, side length be 25 ~ 40 centimetres just
Tetragonous rod structure, and spacing is 60 ~ 120 centimetres between two neighboring concrete precast pile, each concrete precast pile is around foundation pit
Any one structure distribution in middle line rectangular array or annular array.
Further, it in the third step, sets between soil cement mattress layer upper surface and reinforced concrete beds with a thickness of 0-
0.3 meter of geotextile layer.
Present invention layout is simple and compact, and it is convenient to construct, low in cost, can not only play and adjust stress distribution between stake soil
Effect there is good seepage capability due also to permeability coefficient of cement soil is smaller, therefore solve traditional broken stone cushion layer at
The shortcomings that for seepage channel.
Detailed description of the invention
Fig. 1 is the method for the present invention flow diagram.
Fig. 2 is schematic structural view of the invention.
Specific embodiment
Embodiment 1
As shown in Figure 1, a kind of soil cement mattress layer, is made of following substances in weight percentage: cement 8%, surplus are clay.
Wherein, the clay is the solid, powdery structure that granule content of the partial size no more than 0.005 millimeter is more than 50%.
A kind of construction method of soil cement mattress layer in hydraulic engineering composite foundation, comprising the following steps:
The first step, excavation pit are compacted, then first according to construction drawing in designated position excavation pit, and to bottom of foundation ditch
The concrete precast pile that several axis and level perpendicular distribution are squeezed into bottom of foundation ditch constructs concrete prefabricated pile foundation, so
Concrete precast pile is backfilled and is compacted afterwards；
Second step is laid with soil cement mattress layer, cement, water and clay is added to together in mixing plant by use ratio and carried out
Be stirred, then by the mixture after stirring be laid on the first step excavation pit backfill after concrete prefabricated pile foundation
Upper surface obtains soil cement mattress layer after compacting, and the soil cement mattress layer being laid with is with a thickness of 0.2 meter；
Third step, ground construction after completing second step construction, can directly carry out on the soil cement mattress layer that second step is laid with
Reinforced concrete floor construction.
Meanwhile in the first step, concrete precast pile is that height is 7 meters, the square prism structure that side length is 25 centimetres,
And spacing is 60 centimetres between two neighboring concrete precast pile, each concrete precast pile is around foundation pit middle line rectangular array point
Cloth.
Embodiment 2
As shown in Figure 1, a kind of soil cement mattress layer, is made of following substances in weight percentage: cement 18%, water 10%, surplus are
Clay.
Preferably, the clay is the solid, powdery structure that granule content of the partial size no more than 0.005 millimeter is more than 50%.
A kind of construction method of soil cement mattress layer in hydraulic engineering composite foundation, comprising the following steps:
The first step, excavation pit are compacted, then first according to construction drawing in designated position excavation pit, and to bottom of foundation ditch
The concrete precast pile that several axis and level perpendicular distribution are squeezed into bottom of foundation ditch constructs concrete prefabricated pile foundation, so
Concrete precast pile is backfilled and is compacted afterwards；
Second step is laid with soil cement mattress layer, cement, water and clay is added to together in mixing plant by use ratio and carried out
Be stirred, then by the mixture after stirring be laid on the first step excavation pit backfill after concrete prefabricated pile foundation
Upper surface obtains soil cement mattress layer after compacting, and the soil cement mattress layer being laid with is with a thickness of 0.5 meter；
Third step, ground construction after completing second step construction, can directly carry out on the soil cement mattress layer that second step is laid with
Reinforced concrete floor construction.
Wherein, in the first step, concrete precast pile is that height is 8 meters, the square prism structure that side length is 40 centimetres,
And spacing is 120 centimetres between two neighboring concrete precast pile, each concrete precast pile is around foundation pit middle line circular array
Distribution.
Further, it in the third step, sets between soil cement mattress layer upper surface and reinforced concrete beds with a thickness of 0.3
The geotextile layer of rice.
Embodiment 3
As shown in Figure 1, a kind of soil cement mattress layer, is made of following substances in weight percentage: cement 12%, water 3%, surplus are viscous
Soil.
In addition, the clay is the solid, powdery structure that granule content of the partial size no more than 0.005 millimeter is more than 50%.
A kind of construction method of soil cement mattress layer in hydraulic engineering composite foundation, comprising the following steps:
The first step, excavation pit are compacted, then first according to construction drawing in designated position excavation pit, and to bottom of foundation ditch
The concrete precast pile that several axis and level perpendicular distribution are squeezed into bottom of foundation ditch constructs concrete prefabricated pile foundation, so
Concrete precast pile is backfilled and is compacted afterwards；
Second step is laid with soil cement mattress layer, cement, water and clay is added to together in mixing plant by use ratio and carried out
Be stirred, then by the mixture after stirring be laid on the first step excavation pit backfill after concrete prefabricated pile foundation
Upper surface obtains soil cement mattress layer after compacting, and the soil cement mattress layer being laid with is with a thickness of 0.3 meter；
Third step, ground construction after completing second step construction, can directly carry out on the soil cement mattress layer that second step is laid with
Reinforced concrete beds construction.
Wherein, in the first step, concrete precast pile is that height is 9 meters, the square prism structure that side length is 30 centimetres,
And spacing is 100 centimetres between two neighboring concrete precast pile, each concrete precast pile is around foundation pit middle line rectangular array
Distribution.
In addition, being set between soil cement mattress layer upper surface and reinforced concrete beds in the third step with a thickness of 0.15 meter
Geotextile layer,
Present invention layout is simple and compact, and it is convenient to construct, low in cost, can not only play the work for adjusting stress distribution between stake soil
With due also to permeability coefficient of cement soil is smaller, there is good seepage capability, therefore solve traditional broken stone cushion layer and become and seep
The shortcomings that circulation road.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of soil cement mattress layer, it is characterised in that: the soil cement mattress layer is made of following substances in weight percentage:
Cement 8% ~ 18%, water 0 ~ 10%, surplus are clay.
2. a kind of soil cement mattress layer according to claim 1, it is characterised in that: the clay is not more than for partial size
0.005 millimeter of granule content is more than 50% solid, powdery structure.
3. a kind of construction method of soil cement mattress layer in hydraulic engineering composite foundation, it is characterised in that: the soil cement
Construction method of the mattress layer in hydraulic engineering composite foundation the following steps are included:
The first step, excavation pit are compacted, then first according to construction drawing in designated position excavation pit, and to bottom of foundation ditch
The concrete precast pile that several axis and level perpendicular distribution are squeezed into bottom of foundation ditch constructs concrete prefabricated pile foundation, so
Concrete precast pile is backfilled and is compacted afterwards；
Second step is laid with soil cement mattress layer, cement, water and clay is added to together in mixing plant by use ratio and carried out
It is stirred, then the mixture after stirring is uniformly laid on to the concrete prefabricated pile foundation after the backfill of first step excavation pit
Upper surface obtains soil cement mattress layer after compacting, and the soil cement mattress layer being laid with is with a thickness of 0.2 ~ 0.5 meter；
Third step, ground construction after completing second step construction, can directly carry out on the soil cement mattress layer that second step is laid with
Reinforced concrete floor construction.
4. a kind of construction method of the soil cement mattress layer according to claim 3 in hydraulic engineering composite foundation, special
Sign is: in the first step, concrete precast pile is that height is not less than 7 meters, the square prism knot that side length is 25 ~ 40 centimetres
Structure, and spacing is 60 ~ 120 centimetres between two neighboring concrete precast pile, each concrete precast pile is in square around foundation pit middle line
Any one structure distribution in shape array or annular array.
5. a kind of preparation process of soil cement mattress layer according to claim 3, it is characterised in that: in the second step,
The geotextile layer with a thickness of 0-0.3 meter is set between soil cement mattress layer upper surface and reinforced concrete beds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811627511.0A CN109736342A (en) | 2018-12-28 | 2018-12-28 | A kind of soil cement mattress layer and its construction method in hydraulic engineering composite foundation |
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| CN201811627511.0A CN109736342A (en) | 2018-12-28 | 2018-12-28 | A kind of soil cement mattress layer and its construction method in hydraulic engineering composite foundation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273431A (en) * | 2019-07-22 | 2019-09-24 | 重庆众誉材工科技有限公司 | A kind of construction method of the column of the belt conveyer in high landfill area |
| CN110512590A (en) * | 2019-07-11 | 2019-11-29 | 桂林理工大学 | It is a kind of for preventing the construction method of bridge foundation differential settlement |
| CN110805054A (en) * | 2019-11-20 | 2020-02-18 | 湖南易兴建筑有限公司 | Construction method of reinforced concrete composite foundation |
| CN111395314A (en) * | 2020-03-27 | 2020-07-10 | 宣城市政建设集团有限公司 | CFG pile composite foundation construction method |
| CN111794030A (en) * | 2020-07-01 | 2020-10-20 | 长江勘测规划设计研究有限责任公司 | Method for widening dyke foundation at through-dyke building |
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| KR20110072757A (en) * | 2009-12-23 | 2011-06-29 | 대림산업 주식회사 | Constructing method of dual footing structure |
| CN105200879A (en) * | 2015-10-16 | 2015-12-30 | 北京科技大学 | Water-permeable foam concrete pile compound foundation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110512590A (en) * | 2019-07-11 | 2019-11-29 | 桂林理工大学 | It is a kind of for preventing the construction method of bridge foundation differential settlement |
| CN110273431A (en) * | 2019-07-22 | 2019-09-24 | 重庆众誉材工科技有限公司 | A kind of construction method of the column of the belt conveyer in high landfill area |
| CN110805054A (en) * | 2019-11-20 | 2020-02-18 | 湖南易兴建筑有限公司 | Construction method of reinforced concrete composite foundation |
| CN111395314A (en) * | 2020-03-27 | 2020-07-10 | 宣城市政建设集团有限公司 | CFG pile composite foundation construction method |
| CN111794030A (en) * | 2020-07-01 | 2020-10-20 | 长江勘测规划设计研究有限责任公司 | Method for widening dyke foundation at through-dyke building |
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