CN111235988A - Energy-saving foundation-changing construction method - Google Patents
Energy-saving foundation-changing construction method Download PDFInfo
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- CN111235988A CN111235988A CN202010060239.3A CN202010060239A CN111235988A CN 111235988 A CN111235988 A CN 111235988A CN 202010060239 A CN202010060239 A CN 202010060239A CN 111235988 A CN111235988 A CN 111235988A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/003—Foundations for pavings characterised by material or composition used, e.g. waste or recycled material
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Abstract
The invention discloses an energy-saving construction method for a foundation to be filled, which comprises the following steps: the method comprises the following steps: the project responsible person and the project technical responsible person issue a construction special project according to the survey report of the site soft soil foundation and report to a supervision unit for approval; step two: according to the first approved qualified project technical responsible person, carrying out technical background work on the responsible person of the roadbed construction project, and setting full-time safety personnel for carrying out safety background settlement and field inspection; step three: roughly positioning the position of the road surface below the foundation by using a GPS, marking, carrying out extrusion and silting on the concrete plate block of the old road surface positioned at the ditch and the pond, and layering until the concrete plate block is flush with the side of the ditch and the pond; step four: and excavating the soft soil layer on the side of the ditch and the pond, and vibrating and compacting by using a small vibrating machine to detect the bearing capacity of the foundation. The energy-saving foundation-changing construction method is stable and reliable, simple in equipment, convenient to operate, energy-saving, environment-friendly, strong in practicability and suitable for wide popularization and use.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to an energy-saving foundation-changing construction method.
Background
The foundation refers to the soil or rock mass of the supporting foundation under the building. Soil layers as building foundations are divided into rocks, gravel soil, sandy soil, silt soil, cohesive soil and artificial filling soil. The foundation includes a natural foundation and an artificial foundation (composite foundation). Natural foundations are layers of natural soil that do not require human reinforcement. The artificial foundation needs reinforcement treatment by people, and a stone chip cushion layer, a sand cushion layer, mixed lime-soil backfill, tamping and the like are common. The bearing capacity of the foundation is threatened when the water content of the foundation is too large.
The dynamic compaction method and the dynamic compaction replacement method are mainly used for improving the strength of soil, reducing compressibility, improving the vibration liquefaction resistance of soil body and eliminating the collapsibility of soil. The method of adding the filler is generally called vibro-replacement stone pillar method. The vibroflotation method is suitable for treating the foundations of sandy soil, silt soil, silty clay, plain filling soil, miscellaneous filling soil and the like. For treating cohesive soil and saturated loess foundations with non-drainage shear strength of not less than 20kPa, the applicability should be determined by field tests before construction. The method is suitable for treating medium and coarse sand foundations with the clay content not greater than 10% without adding filler and vibroflotation. The vibroflotation gravel pile is mainly used for improving the bearing capacity of a foundation and reducing the settlement of the foundation, and can also be used for improving the anti-skid stability of a soil slope or improving the shear strength of a soil body. Is not suitable for treating the foundation with peat soil, clay with plasticity index more than 25 and ground water with corrosivity and high organic matter content.
If the method needs to be adopted, the applicability of the method needs to be determined through tests, the spring soil phenomenon is easily generated in the treatment process of the existing energy-saving foundation-changing construction method, the bearing capacity is insufficient, and the design concept of energy conservation and environmental protection cannot be revealed in the existing construction method.
Disclosure of Invention
The invention aims to provide an energy-saving type foundation-changing construction method, which aims to solve the problems that the existing energy-saving type foundation-changing construction method proposed in the background art is easy to generate a spring soil phenomenon in the treatment process, so that the bearing capacity is insufficient, and the existing construction method does not show the design concept of energy conservation and environmental protection.
In order to achieve the purpose, the invention provides the following technical scheme: an energy-saving construction method for a foundation to be filled comprises the following steps:
the method comprises the following steps: the project responsible person and the project technical responsible person issue a construction special project according to the survey report of the site soft soil foundation and report to a supervision unit for approval;
step two: according to the first approved qualified project technical responsible person, carrying out technical background work on the responsible person of the roadbed construction project, and setting full-time safety personnel for carrying out safety background settlement and field inspection;
step three: roughly positioning the position of the road surface below the foundation by using a GPS, marking, carrying out extrusion and silting on the concrete plate block of the old road surface positioned at the ditch and the pond, and layering until the concrete plate block is flush with the side of the ditch and the pond;
step four: excavating soft soil layers at the sides of the ditches and ponds, compacting by using a small-sized vibrating machine, detecting the bearing capacity of the foundation, filling road waste and old aggregates in layers after the foundation is qualified, caulking by using mountain flour and slag, rolling for 2-3 times by using a vibratory roller, and rolling for 2-3 times by using a static roller to finish;
step five: spraying cement slurry on the top surface layer of the waste aggregate, and paving a layer of cement soil on the top of the waste aggregate after 24-hour infiltration;
step six: paving lime soil on the top of the cement soil layer by layer until reaching the top surface of the foundation, rolling and compacting layer by layer, and detecting the compactness of the lime soil according to design requirements;
step seven: and manually finishing the foundation, locally filling and compacting the section with unqualified compactness, and detecting the bearing capacity of the section.
Further, the compaction method in the third step is carried out from upstream to downstream from inside to outside, and the concrete slabs for filling the old road surface are rolled for 2-3 times by a 25-ton vibratory roller.
Furthermore, the small-sized vibrating machine in the fourth step is as follows: one of an air rammer, a frog rammer and a flat rammer.
Further, the particle size of the concrete plate on the old pavement in the third step is 20-50cm, and the particle size of the waste granules in the fourth step is 5-10 cm.
Further, the compaction degree of the foundation under one meter in the sixth step is 96%.
Further, the thickness of the cement soil paved in the fifth step is 20 cm.
Compared with the prior art, the invention has the beneficial effects that:
(1) the construction method has the advantages that full-time safety personnel are set for safety end-to-end and field inspection, safety of a construction field is improved, quality safety accidents are avoided, technical project managers carry out technical end-to-end work on managers of special projects for roadbed construction, the technical scheme is perfected, the engineers are constructed according to standards and standards, engineering quality is improved, and accordingly construction level is improved.
(2) The GPS roughly positions the road surface position below the foundation, marks the road surface position, has high accuracy, is convenient to operate, effectively improves the production efficiency, utilizes old road surface concrete plates positioned at the ditches and ponds to carry out extrusion and silting, effectively improves the bearing capacity of the foundation, reuses building waste materials and shows the design concept of energy conservation and environmental protection.
(3) The waste and old aggregate of the road is filled in layers and caulked by stone powder and slag, so that the strength, rigidity and stability of the foundation are improved, cement slurry is sprayed on the top surface layer of the waste and old aggregate, the foundation is reinforced after solidification, and the underground water can be blocked by laying a layer of cement soil, so that the effect of stabilizing the foundation is achieved.
(4) The energy-saving foundation-changing construction method is stable and reliable, simple in equipment, convenient to operate, energy-saving, environment-friendly, strong in practicability and suitable for wide popularization and use. The crushing value of the concrete plate of the middle and old pavement is less than or equal to 20 percent, the porosity of the caulked joint of the stone powder and the slag is 0.5, the bearing capacity after replacement, filling and compaction can reach 120kpa, and the integral strength, the rigidity and the stability of the foundation are effectively improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
An energy-saving construction method for a foundation to be filled comprises the following steps:
the method comprises the following steps: the project responsible person and the project technical responsible person issue a construction special project according to the survey report of the site soft soil foundation and report to a supervision unit for approval;
step two: according to the first approved qualified project technical responsible person, carrying out technical background work on the responsible person of the roadbed construction project, and setting full-time safety personnel for carrying out safety background settlement and field inspection;
step three: roughly positioning the position of the road surface below the foundation by using a GPS, marking, carrying out extrusion and silting on the concrete plate block of the old road surface positioned at the ditch and the pond, and layering until the concrete plate block is flush with the side of the ditch and the pond;
step four: excavating soft soil layers at the sides of the ditches and ponds, compacting by using a small-sized vibrating machine, detecting the bearing capacity of the foundation, filling road waste and old aggregates in layers after the foundation is qualified, caulking by using mountain flour and slag, rolling for 2-3 times by using a vibratory roller, and rolling for 2-3 times by using a static roller to finish;
step five: spraying cement slurry on the top surface layer of the waste aggregate, and paving a layer of cement soil on the top of the waste aggregate after 24-hour infiltration;
step six: paving lime soil on the top of the cement soil layer by layer until reaching the top surface of the foundation, rolling and compacting layer by layer, and detecting the compactness of the lime soil according to design requirements;
step seven: and manually finishing the foundation, locally filling and compacting the section with unqualified compactness, and detecting the bearing capacity of the section.
And in the third step, the compaction method is carried out from upstream to downstream from inside to outside, and the concrete slabs for filling the old road surface are rolled for 2-3 times by a 25-ton vibratory roller.
Wherein, the small-size vibrator in step four is: one of an air rammer, a frog rammer and a flat rammer.
Wherein the particle size of the concrete slab on the old pavement in the third step is 20-50cm, and the particle size of the waste granules in the fourth step is 5-10 cm.
Wherein, the compaction degree of the foundation under one meter in the sixth step is 96 percent.
And fifthly, paving cement soil with the thickness of 20 cm.
Example 2
An energy-saving construction method for a foundation to be filled comprises the following steps:
the method comprises the following steps: the project responsible person and the project technical responsible person issue a construction special project according to the survey report of the site soft soil foundation and report to a supervision unit for approval;
step two: according to the first approved qualified project technical responsible person, carrying out technical background work on the responsible person of the roadbed construction project, and setting full-time safety personnel for carrying out safety background settlement and field inspection;
step three: roughly positioning the position of the road surface below the foundation by using a total station, marking, carrying out extrusion and silting on the concrete plate of the old road surface positioned at the ditch and the pond, and layering until the concrete plate is flush with the side of the ditch and the pond;
step four: excavating soft soil layers at the sides of the ditches and ponds, compacting by using a small-sized vibrating machine, detecting the bearing capacity of the foundation, filling road waste and old aggregates in layers after the foundation is qualified, caulking by using mountain flour and slag, rolling for 2-3 times by using a vibratory roller, and rolling for 2-3 times by using a static roller to finish;
step five: spraying cement slurry on the top surface layer of the waste aggregate, and paving a layer of cement soil on the top of the waste aggregate after 24-hour infiltration;
step six: paving lime soil on the top of the cement soil layer by layer until reaching the top surface of the foundation, rolling and compacting layer by layer, and detecting the compactness of the lime soil according to design requirements;
step seven: and manually finishing the foundation, locally filling and compacting the section with unqualified compactness, and detecting the bearing capacity of the section.
And in the third step, the compaction method is carried out from upstream to downstream from inside to outside, and the concrete slabs for filling the old road surface are rolled for 2-3 times by a 25-ton vibratory roller.
Wherein, the small-size vibrator in step four is: one of an air rammer, a frog rammer and a flat rammer.
Wherein the particle size of the concrete slab on the old pavement in the third step is 20-50cm, and the particle size of the waste granules in the fourth step is 5-10 cm.
Wherein, the compaction degree of the foundation under one meter in the sixth step is 96 percent.
And fifthly, paving cement soil with the thickness of 20 cm.
Example 3
An energy-saving construction method for a foundation to be filled comprises the following steps:
the method comprises the following steps: the project responsible person and the project technical responsible person issue a construction special project according to the survey report of the site soft soil foundation and report to a supervision unit for approval;
step two: according to the first approved qualified project technical responsible person, carrying out technical background work on the responsible person of the roadbed construction project, and setting full-time safety personnel for carrying out safety background settlement and field inspection;
step three: roughly positioning the position of the road surface below the foundation by using a GPS, marking, carrying out extrusion and silting on the concrete plate block of the old road surface positioned at the ditch and the pond, and layering until the concrete plate block is flush with the side of the ditch and the pond;
step four: excavating soft soil layers at the sides of the ditches and ponds, compacting by using a small-sized vibrating machine, detecting the bearing capacity of the foundation, filling road waste and old aggregates in layers after the foundation is qualified, caulking by using mountain flour and slag, rolling for 2-3 times by using a vibratory roller, and rolling for 2-3 times by using a static roller to finish;
step five: spraying cement slurry on the top surface layer of the waste aggregate, and paving a layer of cement soil on the top of the waste aggregate after 24-hour infiltration;
step six: laying two-lime soil on the top of the cement soil layer by layer until reaching the top surface of the foundation, rolling and compacting layer by layer, and detecting the compaction degree according to the design requirement;
step seven: and manually finishing the foundation, locally filling and compacting the section with unqualified compactness, and detecting the bearing capacity of the section.
And in the third step, the compaction method is carried out from upstream to downstream from inside to outside, and the concrete slabs for filling the old road surface are rolled for 2-3 times by a 25-ton vibratory roller.
Wherein, the small-size vibrator in step four is: one of an air rammer, a frog rammer and a flat rammer.
Wherein the particle size of the concrete slab on the old pavement in the third step is 20-50cm, and the particle size of the waste granules in the fourth step is 5-10 cm.
Wherein, the compaction degree of the foundation under one meter in the sixth step is 96 percent.
And fifthly, paving cement soil with the thickness of 20 cm.
When the invention works: the construction method has the advantages that full-time safety personnel are set for safety end-to-end and field inspection, safety of a construction field is improved, quality safety accidents are avoided, technical project managers carry out technical end-to-end work on managers of special projects for roadbed construction, the technical scheme is perfected, the engineers are constructed according to standards and standards, engineering quality is improved, and accordingly construction level is improved. The GPS or the total station approximately positions the pavement position below the foundation and marks the pavement position, so that the accuracy is high, the operation is convenient, the production efficiency is effectively improved, the old pavement concrete plate block positioned at the ditch and pond is utilized to carry out the extrusion silting, the bearing capacity of the foundation is effectively improved, the construction waste is recycled, and the design concept of energy conservation and environmental protection is revealed. The waste and old aggregate of the road is filled in layers and caulked by stone powder and slag, so that the strength, rigidity and stability of the foundation are improved, cement slurry is sprayed on the top surface layer of the waste and old aggregate, the foundation is reinforced after solidification, and the underground water can be blocked by laying a layer of cement soil, so that the effect of stabilizing the foundation is achieved. The energy-saving foundation-changing construction method is stable and reliable, simple in equipment, convenient to operate, energy-saving, environment-friendly, strong in practicability and suitable for wide popularization and use. The crushing value of the concrete plate of the middle and old pavement is less than or equal to 20 percent, the porosity of the caulked joint of the stone powder and the slag is 0.5, the bearing capacity after replacement, filling and compaction can reach 120kpa, and the integral strength, the rigidity and the stability of the foundation are effectively improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An energy-saving construction method for a foundation to be filled is characterized by comprising the following steps:
the method comprises the following steps: the project responsible person and the project technical responsible person issue a construction special project according to the survey report of the site soft soil foundation and report to a supervision unit for approval;
step two: according to the first approved qualified project technical responsible person, carrying out technical background work on the responsible person of the roadbed construction project, and setting full-time safety personnel for carrying out safety background settlement and field inspection;
step three: roughly positioning the position of the road surface below the foundation by using a GPS, marking, carrying out extrusion and silting on the concrete plate block of the old road surface positioned at the ditch and the pond, and layering until the concrete plate block is flush with the side of the ditch and the pond;
step four: excavating soft soil layers at the sides of the ditches and ponds, compacting by using a small-sized vibrating machine, detecting the bearing capacity of the foundation, filling road waste and old aggregates in layers after the foundation is qualified, caulking by using mountain flour and slag, rolling for 2-3 times by using a vibratory roller, and rolling for 2-3 times by using a static roller to finish;
step five: spraying cement slurry on the top surface layer of the waste aggregate, and paving a layer of cement soil on the top of the waste aggregate after 24-hour infiltration;
step six: paving lime soil on the top of the cement soil layer by layer until reaching the top surface of the foundation, rolling and compacting layer by layer, and detecting the compactness of the lime soil according to design requirements;
step seven: and manually finishing the foundation, locally filling and compacting the section with unqualified compactness, and detecting the bearing capacity of the section.
2. An energy-saving foundation reclamation method as recited in claim 1, wherein: and in the third step, the sludge squeezing method is carried out from the upstream to the downstream from the inside to the outside, and the concrete slab for filling the old pavement is rolled for 2-3 times by a 25-ton vibratory roller.
3. An energy-saving foundation reclamation method as recited in claim 1, wherein: the small-sized vibrating machine in the fourth step comprises the following steps: one of an air rammer, a frog rammer and a flat rammer.
4. An energy-saving foundation reclamation method as recited in claim 1, wherein: the particle size of the concrete slab on the old pavement in the third step is 20-50cm, and the particle size of the waste granules in the fourth step is 5-10 cm.
5. An energy-saving foundation reclamation method as recited in claim 1, wherein: and in the sixth step, the compaction degree of the foundation below one meter is 96%.
6. An energy-saving foundation reclamation method as recited in claim 1, wherein: and in the fifth step, the thickness of the laid cement soil is 20 cm.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101418565A (en) * | 2007-10-23 | 2009-04-29 | 中铁第一勘察设计院集团有限公司 | Qinghai-tibet railway permafrost wetland ground treatment technique |
| CN102747662A (en) * | 2012-07-18 | 2012-10-24 | 上海城建市政工程（集团）有限公司 | Construction method for sand-filling subgrade |
| CN106436677A (en) * | 2016-09-29 | 2017-02-22 | 江苏工程职业技术学院 | Energy-saving type foundation exchange filling construction method |
| CN106592362A (en) * | 2016-11-28 | 2017-04-26 | 北京市政建设集团有限责任公司 | Method for utilizing building rubbish to construct bottom layer roadbed |
| CN107268365A (en) * | 2017-06-23 | 2017-10-20 | 云南新同程建设集团有限公司 | A kind of Construction of Soft Soil Subgrade technique |
| US9957670B2 (en) * | 2012-02-20 | 2018-05-01 | Technisoil Industrial Llc | Polyurethane based roadway forming |
-
2020
- 2020-01-19 CN CN202010060239.3A patent/CN111235988B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418565A (en) * | 2007-10-23 | 2009-04-29 | 中铁第一勘察设计院集团有限公司 | Qinghai-tibet railway permafrost wetland ground treatment technique |
| US9957670B2 (en) * | 2012-02-20 | 2018-05-01 | Technisoil Industrial Llc | Polyurethane based roadway forming |
| CN102747662A (en) * | 2012-07-18 | 2012-10-24 | 上海城建市政工程（集团）有限公司 | Construction method for sand-filling subgrade |
| CN106436677A (en) * | 2016-09-29 | 2017-02-22 | 江苏工程职业技术学院 | Energy-saving type foundation exchange filling construction method |
| CN106592362A (en) * | 2016-11-28 | 2017-04-26 | 北京市政建设集团有限责任公司 | Method for utilizing building rubbish to construct bottom layer roadbed |
| CN107268365A (en) * | 2017-06-23 | 2017-10-20 | 云南新同程建设集团有限公司 | A kind of Construction of Soft Soil Subgrade technique |
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Address after: 330299 Liantang Zhen gengtou Cun Yao Cun Zi Cun, Nanchang County, Nanchang City, Jiangxi Province Patentee after: Haixin Construction Development Group Co.,Ltd. Address before: 330299 Liantang Zhen gengtou Cun Yao Cun Zi Cun, Nanchang County, Nanchang City, Jiangxi Province Patentee before: JIANGXI HAIXIN CONSTRUCTION Co.,Ltd. |
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