CN109137872B - Reinforced structure bag and method for processing soft foundation by using reinforced structure bag - Google Patents
Reinforced structure bag and method for processing soft foundation by using reinforced structure bag Download PDFInfo
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- CN109137872B CN109137872B CN201811021753.5A CN201811021753A CN109137872B CN 109137872 B CN109137872 B CN 109137872B CN 201811021753 A CN201811021753 A CN 201811021753A CN 109137872 B CN109137872 B CN 109137872B
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- reinforced structure
- bag body
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- soft foundation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
Abstract
The invention discloses a bag with a reinforced structure, which comprises a bag body and is characterized in that: the middle part of the upper end of the bag body is provided with a hanging buckle, the bottom of the bag body is alternately provided with two reinforced belts, a vertical connecting belt is arranged in the bag body, the upper end of the vertical connecting belt is connected with the hanging buckle, the lower end of the vertical connecting belt is connected with the reinforced belts, and the bag body is filled with geotechnical materials. The reinforced structure bag achieves the purpose of soft foundation treatment by utilizing the interaction between the special structure in the bag and the bag under the condition of not changing foundation soil and underground water. The invention also discloses a method for processing the soft foundation by using the reinforced structural bag.
Description
Technical Field
The invention belongs to the field of foundation treatment in geotechnical engineering, and particularly relates to a reinforced structure bag and a method for treating a soft foundation by using the reinforced structure bag.
Background
The soft foundation treatment method can be divided into a solidification method and a consolidation method according to the treatment mode of water in foundation soil, wherein the solidification method is to change the structure or the form of water in soil so as to improve the strength of a soil body, and typical methods comprise stirring piles, jet grouting piles and freezing methods; the consolidation method is a method of separating water from soil to reduce the water content and improve the soil strength, and typical methods thereof include a preloading drainage method, an electroosmosis drainage method and a dewatering well method. The soft foundation treatment object is foundation soil in a certain range below the earth surface, and the technical characteristic is that the strength of the foundation soil is improved by changing the structure, the form, the water content and the water level of underground water, wherein a solidification method has high energy consumption and high cost, and causes damage to the foundation soil which is difficult to recover and even causes environmental pollution; the consolidation method has long construction period and is easy to damage the surrounding environment, such as swelling, settlement, tension crack and other accidents. In the traditional geotextile bag technology, because other constraint structures are not arranged in the geotextile bag, the strength of soil in the geotextile bag is improved only by the surface tension of the geotextile bag, so that the bearing capacity of a foundation is not high, the shape effect cannot be generated after the geotextile bag is pressed, and overlarge settlement and soil instability are easily generated, so that the application of the traditional geotextile bag technology is not common in the soft foundation treatment.
Disclosure of Invention
In view of the defects of the background art, the technical problem to be solved by the invention is to provide a reinforced structure bag which achieves the purpose of soft foundation treatment by utilizing the interaction between a special structure in the bag and the bag under the condition of not changing foundation soil and underground water.
Therefore, the invention is realized by adopting the following technical scheme:
the utility model provides a reinforced structure bag, includes the bag body, characterized by: the middle part of the upper end of the bag body is provided with a hanging buckle, the bottom of the bag body is alternately provided with two reinforced belts, a vertical connecting belt is arranged in the bag body, the upper end of the vertical connecting belt is connected with the hanging buckle, the lower end of the vertical connecting belt is connected with the reinforced belts, and the bag body is filled with geotechnical materials.
The bag body is made of polypropylene and is in a cuboid shape, the length and the width of the bottom of the bag body are equal and are 1-2 meters, and the height of the bag body is 0.2-0.8 meter.
The geotechnical material is soil or building material or building rubbish with high water permeability and high strength.
The soil with good water permeability and high strength is silt, sandy soil or gravel.
The invention also provides a method for processing the soft foundation by using the reinforced structural bag, which is characterized by comprising the following steps of:
(1) selecting a reinforced structure bag with a proper size according to design requirements, and simultaneously performing performance rechecking on the reinforced structure bag;
(2) filling soil or building materials or building garbage with high water permeability and high strength into the reinforced structure bags on site or in other places in advance;
(3) leveling a soft foundation field, removing plant roots and obstacles in soil of the soft foundation field, and burying detection equipment according to design requirements;
(4) laying a filled reinforced structure bag on a soft foundation field according to design requirements (if the soft foundation field is too soft, a layer of geotextile can be laid on the surface of the soft foundation field to prevent the muddy water from turning upwards), and meanwhile, using a bucket of an excavator to vertically and forcibly pressurize the surface of the reinforced structure bag for 1-2 minutes, wherein the pressurizing sequence is firstly in the center and then around;
(5) filling broken stones with the grain size of 10-40 mm into gaps among the bags after the reinforced structure bags are laid;
(6) compacting the reinforced structure bag by vibration with a road roller or a vibratory tamper until the compactness is qualified, and then laying a layer of geotextile on the surface of the reinforced structure bag to serve as a protective film;
(7) performing quality inspection according to the standard requirements;
(8) before use, a steel plate or a protective layer can be paved to prevent the reinforced structure bag from being damaged.
After adopting above-mentioned technical scheme, add muscle structure bag and utilize the exogenic action, change its atress mode, produce the stress dispersion effect, concrete advantage is as follows:
1. the conventional soft foundation treatment method is realized by taking foundation soil as a treatment object and changing the structure, the form, the water content and the water level of underground water, but the method does not treat the foundation soil and the underground water at all, can be completely recycled after use, does not pollute the material of a reinforced structure bag, and belongs to a novel energy-saving and environment-friendly method;
2. the strength of the soil body in the common geotextile bag is improved to a limited extent due to no constraint device in the common geotextile bag, and the soil body is easy to deform and destabilize after being stressed;
3. the reinforced structure bags form lateral expansion after being stressed, the frictional resistance among the bags is increased, meanwhile, the bag bottom arch structure transmits vertical pressure to the bag edges, the structure can form a stress dispersion effect, the larger the external force is, the wider the stress dispersion range is, and the stronger the stress dispersion capability is, so the method can improve the bearing capacity of the foundation and reduce the settlement amount of the foundation;
4. the method has the advantages of simple and easy operation, high mechanization degree, low artificial content, no influence of site environment and weather, high construction efficiency, and no need of age maintenance after construction.
Drawings
The invention has the following drawings:
FIG. 1 is a top view of a bag with a reinforced structure according to the present invention;
FIG. 2 is a side view of a bag with a reinforced structure according to the present invention;
FIG. 3 is a cross-sectional view of the reinforced bag according to the present invention;
fig. 4 is a process flow chart of the reinforced structure bag for treating the soft foundation.
Detailed Description
Referring to the attached drawings, the reinforced structure bag provided by the invention comprises a bag body 1, wherein a hanging buckle 2 is arranged in the middle of the upper end of the bag body 1, two reinforcing strips 3 are arranged at the bottom of the bag body 1 in a crossed manner, a vertical connecting strip 5 is arranged in the bag body 1, the upper end of the vertical connecting strip 5 is connected with the hanging buckle 2, the lower end of the vertical connecting strip is connected with the reinforcing strips 3, a geotechnical material 4 is filled in the bag body 1, the bag body 1 is made of polypropylene, the bag body 1 is in a cuboid shape, the length and the width of the bottom of the bag body 1 are equal and are 1-2 meters, the height of the bag body 1 is 0.2-0.8 meter, the geotechnical material 4 is soil or building materials or construction wastes with high water permeability and high strength, and the soil with high water permeability and high strength is silt or sandy soil or gravel.
The invention also provides a method for processing the soft foundation by using the reinforced structural bag, which is characterized by comprising the following steps of:
(1) selecting a reinforced structure bag with a proper size according to design requirements, and simultaneously performing performance rechecking on the reinforced structure bag;
(2) filling soil or building materials or building garbage with high water permeability and high strength into the reinforced structure bags on site or in other places in advance;
(3) leveling a soft foundation field, removing plant roots and obstacles in soil of the soft foundation field, and burying detection equipment according to design requirements;
(4) laying a filled reinforced structure bag on a soft foundation field according to design requirements (if the soft foundation field is too soft, a layer of geotextile can be laid on the surface of the soft foundation field to prevent the muddy water from turning upwards), and meanwhile, using a bucket of an excavator to vertically and forcibly pressurize the surface of the reinforced structure bag for 1-2 minutes, wherein the pressurizing sequence is firstly in the center and then around;
(5) filling broken stones with the grain size of 10-40 mm into gaps among the bags after the reinforced structure bags are laid;
(6) compacting the reinforced structure bag by vibration with a road roller or a vibratory tamper until the compactness is qualified, and then laying a layer of geotextile on the surface of the reinforced structure bag to serve as a protective film;
(7) performing quality inspection according to the standard requirements;
(8) before use, a steel plate or a protective layer can be paved to prevent the reinforced structure bag from being damaged.
In the embodiment, the geotechnical material in the reinforced structure bag is laterally expanded after being pressed, the surface and the inner reinforced belts 3 of the reinforced structure bag also generate tension, and the strength and the compression modulus of the geotechnical material 4 in the bag are obviously improved, which is equivalent to the increase of the stress diffusion angle of the foundation cushion layer; in addition, the bottom of the bag forms an arch structure after the reinforced belts 3 in the reinforced structure bag are stressed, so that the structure can diffuse vertical pressure to the surrounding reinforced structure bag, and reduce additional stress below the reinforced structure bag; the method has the advantages that the special constraint structures on the surface and inside of the reinforced structure bag are utilized, the vertical load is subjected to stress dispersion, overload prepressing treatment is carried out on the reinforced structure bag in the construction stage, the settlement of the foundation after construction can be reduced, and compared with the traditional method, the method is more environment-friendly, more energy-saving and quicker in construction, and is suitable for popularization and application.
Claims (1)
1. A method for processing a soft foundation by using a bag with a reinforced structure is characterized by comprising the following steps:
(1) selecting a reinforced structure bag with a proper size according to design requirements, and simultaneously performing performance rechecking on the reinforced structure bag; the reinforced structure bag comprises a bag body, wherein a hanging buckle is arranged in the middle of the upper end of the bag body, two reinforced belts are arranged at the bottom of the bag body in a crossed mode, a vertical connecting belt is arranged in the bag body, the upper end of the vertical connecting belt is connected with the hanging buckle, the lower end of the vertical connecting belt is connected with the reinforced belts, and geotechnical materials are filled in the bag body; the bag body is made of polypropylene and is in a cuboid shape, the length and the width of the bottom of the bag body are equal and are 1-2 m, and the height of the bag body is 0.2-0.8 m; the geotechnical material is soil or building material or building rubbish with high water permeability and high strength; the soil with good water permeability and high strength is silt, sandy soil or gravel; after laying, the two reinforced belts are spread in four directions in a balanced manner by taking the vertical connecting belt and the hanging buckle as centers;
(2) filling soil or building materials or building garbage with high water permeability and high strength into the reinforced structure bags on site or in other places in advance;
(3) leveling a soft foundation field, removing plant roots and obstacles in soil of the soft foundation field, and burying detection equipment according to design requirements;
(4) laying a filled reinforced structure bag on a soft foundation field according to design requirements, if the soft foundation field is too soft, laying a layer of geotextile on the surface of the soft foundation field to prevent the muddy water from turning upwards, and meanwhile, using a bucket of an excavator to vertically and forcibly pressurize the surface of the reinforced structure bag for 1-2 minutes, wherein the pressurizing sequence is firstly in the center and then around;
(5) filling broken stones with the grain size of 10-40 mm into gaps among the bags after the reinforced structure bags are laid;
(6) compacting the reinforced structure bag by vibration with a road roller or a vibratory tamper until the compactness is qualified, and then laying a layer of geotextile on the surface of the reinforced structure bag to serve as a protective film;
(7) performing quality inspection according to the standard requirements;
(8) lay the protective layer before using, prevent to damage the reinforced structure bag.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811021753.5A CN109137872B (en) | 2018-09-03 | 2018-09-03 | Reinforced structure bag and method for processing soft foundation by using reinforced structure bag |
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| CN201811021753.5A CN109137872B (en) | 2018-09-03 | 2018-09-03 | Reinforced structure bag and method for processing soft foundation by using reinforced structure bag |
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| CN109137872A CN109137872A (en) | 2019-01-04 |
| CN109137872B true CN109137872B (en) | 2021-07-30 |
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| CN112144561A (en) * | 2020-09-30 | 2020-12-29 | 河北昊锐基础工程有限公司 | Foundation anti-settlement structure and construction method |
| CN114351729A (en) * | 2021-11-23 | 2022-04-15 | 王琪 | Assembly type ground firmware slope protection and cushion layer structure and laying method thereof |
| CN113931211A (en) * | 2021-11-23 | 2022-01-14 | 王琪 | Fabricated foundation and foundation of ground firmware and installation method thereof |
| CN114232592B (en) * | 2021-12-31 | 2023-06-02 | 华东交通大学 | Foundation reinforcement member device and construction method |
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| CN101220589B (en) * | 2008-01-04 | 2010-10-20 | 刘斯宏 | Soil engineering bag and method for dynamically squeezing and synthetically reinforcing soft groundwork |
| CN102127907A (en) * | 2010-01-18 | 2011-07-20 | 刘斯宏 | Geotextile bag raft and application method thereof |
| CN103806434B (en) * | 2014-03-09 | 2016-06-01 | 西南科技大学 | A kind of level joins the method building the slag soil engineering bag front saturated over-wet soil ground of engineering of process brill |
| CN107724438A (en) * | 2017-10-19 | 2018-02-23 | 北京群祥兴新材料科技股份有限公司 | Tear-proof Large Sand quilt and its manufacture craft |
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