CN111042175A - Equipment for preventing large-area raft foundation from cracking and using method thereof - Google Patents
Equipment for preventing large-area raft foundation from cracking and using method thereof Download PDFInfo
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- CN111042175A CN111042175A CN201911281715.8A CN201911281715A CN111042175A CN 111042175 A CN111042175 A CN 111042175A CN 201911281715 A CN201911281715 A CN 201911281715A CN 111042175 A CN111042175 A CN 111042175A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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Abstract
The invention relates to the technical field of raft protection, and discloses equipment for preventing a large-area raft foundation from cracking, which comprises a plurality of special water bags, a special water tank, a circulating pump, temperature control equipment and temperature measurement equipment, wherein an outlet of the special water tank is connected with the left end of the circulating pump, the right end of the circulating pump is connected with a water inlet end of the temperature control equipment, a special water pipe is arranged in the special water bag, and one end of the special water pipe is fixedly connected with a water adding pipe. After the large-area raft foundation is poured, the special water bag is matched with the special water pipe to achieve the purposes of heat preservation and cooling of the concrete surface, so that the construction process is greatly simplified, the working efficiency is improved, the construction progress is accelerated, the problems of construction period influence and cost increase caused by post-cast strip construction can be solved, and the safe use function of a concrete structure is not influenced.
Description
Technical Field
The invention relates to the technical field of raft protection, in particular to equipment for preventing a large-area raft foundation from cracking and a using method thereof.
Background
The large-area raft foundation concrete construction is widely applied to building engineering, but the cracking problem of the concrete caused by the surrounding environment and temperature always troubles the majority of practitioners in the engineering field. Under the normal use condition, the factors causing the concrete to crack mainly include that the surface is not vibrated in place, the produced concrete laitance is too thick, the concrete expands with heat and contracts with cold under the action of temperature difference, the concrete shrinks and deforms, the maintenance measures are not in place, and the like. For the expansion cracks generated by concrete, the generation of cracks can be avoided as long as other factors caused by the expansion cracks are eliminated in advance, the remedial measures after the expansion cracks are generated are usually to eliminate the factors causing temperature difference settlement, and then the surface cracks are repaired. For cracks generated by large-area concrete under the action of temperature difference, the precaution measures are to isolate the concrete from external influencing factors so as to keep the concrete in a relatively constant temperature environment, but some engineering parts are often difficult to adopt the method, so that temperature expansion cracks are often inevitably generated, only subsequent repair measures can be adopted, and the increase of engineering cost and the waste of materials are caused; for the concrete of different materials under the action of temperature difference, because the expansion coefficient of the concrete itself is different and the expansion crack that results from the difference of accumulated deformation is produced, the precaution usually adopts the secondary finishing and plastering technique before the concrete sets finally after adopting the good raft foundation concrete of bayonet vibrator vibration, then covers the sack and covers moisturizing, can not cool down in time and keep warm, therefore can not stop the fracture completely. For the construction of large-area raft foundation concrete, the cracks generated by self shrinkage accumulation deformation in the age period are prevented by the preventive measures that after the maintenance strength is reached, the subsequent repair of the concrete surface with cracks generated due to misoperation also causes the increase of engineering cost and the waste of materials. Cracking of the raft foundation may also cause problems such as water seepage of the basic raft.
At raft fashioned in-process, because external temperature can exert an influence to raft shaping process, this very easily produces the crack when will making the raft shaping for the shaping rate of raft reduces, and some cracks that are difficult for observing out can also influence the subsequent use of raft in addition, make the holistic bearing capacity of raft and intensity reduce.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides equipment for preventing large-area raft foundation from cracking and a use method thereof, which have the advantages of greatly reducing the construction period, effectively preventing the cracking of the raft caused by the temperature problem in the raft forming process and the like, and solves the problems that the external temperature can influence the raft forming process, so that the cracks are easily generated during the raft forming process, the forming rate of the raft is reduced, and the subsequent use of the raft is influenced by the cracks which are difficult to observe, so that the integral bearing capacity and strength of the raft are reduced.
(II) technical scheme
In order to achieve the purpose of greatly reducing the construction period and effectively preventing the cracking of the raft plate caused by the temperature problem in the forming process of the raft plate, the invention provides the following technical scheme: the utility model provides a prevent that large tracts of land raft foundation from producing cracked equipment, includes a plurality of speciality water bags, speciality water tank, circulating pump, temperature control equipment and temperature measurement equipment, the export of speciality water tank is connected with the left end of circulating pump, the right-hand member of circulating pump is connected with the end of intaking of temperature control equipment.
The temperature control device is characterized in that a special water pipe is arranged inside the special water bag, one end of the special water pipe is fixedly connected with a water adding pipe, and one end, far away from the special water bag, of the water adding pipe is connected with the output end of the temperature control device through a connecting piece.
Preferably, the number of the special water bags is four, and four independent special water bags form a first partition, a second partition, a third partition and a fourth partition respectively.
Preferably, the raft foundation concrete of double-deck distribution is installed to the back of speciality water bag, adds between the two-layer raft foundation concrete and is equipped with the stagnant water steel sheet, the lower floor the back installation of raft foundation concrete has the reinforcing plate.
Preferably, there is a construction gap between adjacent raft foundation concrete and the adjacent stagnant water steel sheet.
Preferably, the input end of the temperature measuring equipment is provided with a temperature measuring head, and the temperature measuring head penetrates through the special water bag, the raft foundation concrete and the water stop steel plate from front to back.
Preferably, the special water pipe is distributed in a serpentine shape in the special water bag.
Preferably, the inner wall of the connecting piece and the joint of the water feeding pipe are both provided with screw threads, and the connecting piece and the water feeding pipe are in threaded connection.
The invention aims to solve another technical problem of providing a using method of equipment for preventing large-area raft foundations from cracking, which comprises the following steps:
a, water bag filling: cleaning the outer part of the raft foundation concrete to avoid sharp spines or particles which are easy to damage special water bags remaining on the outer part of the raft foundation concrete, then installing a plurality of independent subareas of the special water bags on the outer part of the raft foundation concrete, and then inserting snakelike distributed special water pipes into the special water bags;
b, injecting special water: the special water in the special water tank can be injected into the special water pipe through the circulating pump, so that the special water pipe is filled with the special water, then the water adding pipe is separated from the special water pipe, and the special water pipe is sealed, so that the special water in the special water pipe is always reserved in the special water pipe;
c, regulating the special water temperature: the special water pumped out from the circulating pump and passing through the temperature control equipment can be subjected to temperature adjustment according to the needs, so that the temperature of the special water input into the water adding pipe meets the heat preservation needs;
d, temperature control stage: temperature measuring equipment can carry out real-time supervision through the temperature head to the temperature in speciality water bag, raft foundation concrete, stagnant water steel sheet and the construction gap, when the temperature that detects was too big with suitable temperature difference, can control temperature measuring equipment and regulate and control the speciality water temperature that enters into in the water pipe for pour into the speciality water pipe through the circulating pump in, make the temperature in speciality water pipe and the speciality water bag remain at a suitable temperature throughout.
(III) advantageous effects
Compared with the prior art, the invention provides equipment for preventing large-area raft foundation from cracking and a using method thereof, and the equipment has the following beneficial effects:
1. the equipment for preventing the large-area raft foundation from generating cracks and the using method thereof can simultaneously cover the large-area raft foundation through the matching of the plurality of independent special water bags and the special water pipes filled with special water, further timely preserve heat and moisture for pouring the poured large-area raft foundation, the time of maintaining, preserving heat and cooling is needed to be reached, the concrete is slowly cooled and slowly dried, thereby utilizing the concrete relaxation performance, reducing the superposed stress, releasing the constraint stress caused by most of early-stage temperature deformation and drying shrinkage deformation of the concrete, and effectively preventing the large-area raft foundation concrete from generating cracks.
2. This prevent large tracts of land raft foundation equipment that produces crack and application method thereof, data that provide through temperature measurement equipment, control the speciality water through temperature control equipment, and then can adjust the temperature of the speciality water that enters into in the speciality water pipe, in order to reach the intensification and the cooling of regulating speciality liquid in the speciality water bag, can drive the speciality temperature rise in the speciality water bag and reduce, thereby reach the purpose at heat preservation and cooling of large tracts of land raft foundation concrete surface, make and effectively prevent large tracts of land raft foundation concrete from producing the crack.
3. The equipment for preventing the large-area raft foundation from cracking and the use method thereof can solve the problems of construction period influence and cost increase caused by the large-area raft foundation construction through a simple structure, and can reduce the material consumption attached to later construction, thereby shortening the construction period and reducing the overall performance of the engineering cost reinforced structure, and having remarkable economic and social benefits in the aspects of energy conservation, material conservation and cost reduction, thereby being suitable for popularization and use.
Drawings
Fig. 1 is a schematic structural view of an apparatus for preventing large-area raft foundations from cracking according to the present invention;
fig. 2 is a schematic view of a connection structure of raft foundation concrete and a water stop steel plate in the equipment for preventing a large-area raft foundation from generating cracks;
fig. 3 is a schematic view of a connection structure of a water feeding pipe and a connection member in the device for preventing large-area raft foundation cracks.
In the figure: 1. a special water bag; 2. a special water tank; 3. a circulation pump; 4. a temperature control device; 5. a special water pipe; 6. a water feeding pipe; 7. a connecting member; 8. a first partition; 9. a second partition; 10. a third partition; 11. a fourth partition; 12. raft foundation concrete; 13. a water stop steel plate; 14. constructing a gap; 15. a reinforcing plate; 16. a temperature measuring device; 17. a temperature measuring head; 18. and (4) threading.
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.
Please refer to fig. 1-3, an apparatus for preventing large area raft foundation from cracking comprises a plurality of special water bags 1, a special water tank 2, a circulating pump 3, a temperature control device 4 and a temperature measuring device 16, wherein an outlet of the special water tank 2 is connected with a left end of the circulating pump 3, a right end of the circulating pump 3 is connected with a water inlet end of the temperature control device 4, the circulating pump 3 is arranged to exchange the special water in the special water tank 2 with the water in the temperature control device 4, so that the temperature passing through the temperature control device 4 can be adjusted more conveniently, and the output special water is cleaner and fresher.
The internally mounted of speciality water bag 1 has speciality water pipe 5, speciality water pipe 5 is snakelike distribution in speciality water bag 1, the speciality water pipe 5 that snakelike distributed can make the temperature in the speciality water pipe 5 in the speciality water can be even spread to speciality water bag 1 in, make speciality water bag 1 can be to the even stable heat of raft board transport, raft board temperature control effect when to the shaping is better, the one end fixedly connected with filler pipe 6 of speciality water pipe 5, the one end that filler pipe 6 kept away from speciality water bag 1 is passed through connecting piece 7 and is connected with the output of temperature control equipment 4, the speciality water of output can follow connecting piece 7 and filler pipe 6 business turn over in speciality water pipe 5 from temperature control equipment 4, and then change the speciality water in the speciality water pipe 5, so that the temperature of the speciality water in the speciality water pipe 5 is controlled and adjusted.
Place on raft foundation concrete 12 through speciality water bag 1, raft foundation concrete 12 when can be to the shaping keeps warm, the quantity of speciality water bag 1 is four, and four independent speciality water bags 1 form first subregion 8 respectively, second subregion 9, third subregion 10 and fourth subregion 11, can cover raft foundation concrete 12 through a plurality of independent speciality water bags 1, the effect of covering raft foundation concrete 12 can be guaranteed to independent divided a plurality of speciality water bags 1, when raft foundation concrete 12 area is great, also can adjust speciality water bag 1's size as required, position and quantity, in order to guarantee the temperature control effect when raft foundation concrete 12 shaping.
The raft board mostly comprises multilayer structure, the back mounted of speciality water bag 1 has double-deck raft board basis concrete 12 that distributes, add between two-layer raft board basis concrete 12 and be equipped with stagnant water steel sheet 13, the back mounted of the raft board basis concrete 12 of lower floor has reinforcing plate 15, double-deck raft board basis concrete 12 adds stagnant water steel sheet 13 and reinforcing plate 15 can increase the bulk strength of raft board, and the prevention of seepage water effect of raft board can be increased in the setting of stagnant water steel sheet 13 moreover, make the prevention of seepage water effect after the raft board shaping better.
The material is because the expansion coefficient of different materials may lead to the shared space change of material when the shaping, all there is construction gap 14 between adjacent raft foundation concrete 12 and the adjacent stagnant water steel sheet 13, the reservation of construction gap 14, can reduce when raft foundation concrete 12 is dry because of expansion coefficient's reason leads to taking place to extrude between two adjacent raft foundation concrete 12, can guarantee the connectivity after two adjacent raft foundation concrete 12 shaping, avoid producing the gap because of the extrusion.
The speciality water after 4 temperature regulation of temperature control equipment can be through in water pipe 6 pours into speciality water pipe 5 into, screw thread 18 has all been seted up with water pipe 6 junction to the inner wall of connecting piece 7, and connecting piece 7 passes through screw thread 18 threaded connection with water pipe 6, setting through connecting piece 7 and screw thread 18, can make things convenient for the part and the connection of water pipe 6 with connecting piece 7, make same group of temperature control equipment 4, circulating pump 3 and speciality water tank 2 can carry out the change of speciality water for the speciality water pipe 5 in the different speciality water bags 1 simultaneously, use cost is lower.
The invention aims to solve another technical problem of providing a using method of equipment for preventing large-area raft foundations from cracking, which comprises the following steps:
a, water bag filling: firstly, cleaning the outside of raft foundation concrete 12 to avoid sharp spines or particles which are easy to damage special water bags 1 from remaining outside the raft foundation concrete 12, then installing a plurality of independent subareas of the special water bags 1 outside the raft foundation concrete 12, and then inserting snakelike special water pipes 5 into the special water bags 1;
b, injecting special water: the special water in the special water tank 2 can be injected into the special water pipe 5 through the circulating pump 3, so that the special water pipe 5 is filled with the special water, then the water adding pipe 6 is separated from the special water pipe 5, and the special water pipe 5 is sealed, so that the special water in the special water pipe 5 is always reserved in the special water pipe 5;
c, regulating the special water temperature: the special water pumped out from the circulating pump 3 and passing through the temperature control device 4 can be adjusted in temperature according to the needs, so that the water temperature of the special water input into the water adding pipe 6 meets the heat preservation needs;
d, temperature control stage: temperature measuring equipment 16 can carry out real-time supervision to the temperature in speciality water bag 1, raft foundation concrete 12, stagnant water steel sheet 13 and the construction gap 14 through temperature probe 17, when the temperature that detects and suitable temperature difference were too big, can control temperature measuring equipment 4 and regulate and control the speciality water temperature that enters into in filler pipe 6 for pour into speciality water pipe 5 in through circulating pump 3, make the temperature in speciality water pipe 5 and the speciality water bag 1 remain at a suitable temperature throughout.
The invention has the beneficial effects that: the raft plates with large areas can be simultaneously covered by matching a plurality of independent special water bags 1 with special water pipes 5 filled with special water, and then the large-area raft plate foundation after pouring is subjected to timely heat preservation and moisture preservation maintenance, the time for maintaining, preserving heat and reducing temperature is required to be reached, the concrete is slowly reduced in temperature and slowly dried, so that the concrete relaxation performance is utilized, the superposed stress is reduced, the constraint stress caused by most of the early-stage temperature deformation and drying shrinkage deformation of the concrete can be released, and the aim of effectively preventing cracks from being generated in the large-area raft plate foundation concrete 12 is achieved;
the method of heat preservation and cooling is adopted on the surface of the large-area raft foundation, the conventional method in large-area reinforced concrete construction is changed, so that the concrete does not crack under the temperature change of the surrounding environment, the problem that the surface of the concrete cracks due to the accumulated deformation difference generated by the concrete due to different expansion coefficients can be solved, the accumulated deformation generated by the self shrinkage of the concrete in the age can be offset, the crack generation on the surface of the concrete is avoided, and the bearing capacity and the use functions of other structures of the concrete are not influenced;
the invention greatly simplifies the construction process, improves the work efficiency, accelerates the construction progress, can solve the problems of construction period influence and cost increase caused by large-area raft foundation construction, and can reduce the material consumption attached to later-stage construction, thereby shortening the construction period and reducing the overall performance of the engineering cost reinforced structure, and having remarkable economic and social benefits in the aspects of energy conservation, material conservation and cost reduction, thereby being suitable for popularization and use;
after the large-area raft foundation is poured, the special water bag 1 is matched with the special water pipe 5 to achieve the purposes of preserving heat and cooling the surface of concrete, so that the construction process is greatly simplified, the work efficiency is improved, the construction progress is accelerated, the problems of construction period influence and cost increase caused by post-cast strip construction can be solved, and the safe use function of a concrete structure is not influenced;
when large tracts of land raft foundation concrete 12 was under construction, can be according to the data that temperature measurement equipment 16 provided, control process temperature control equipment's speciality water, and then can adjust the temperature of the speciality water that enters into speciality water pipe 5, in order to reach the intensification and the cooling of regulating speciality liquid in the speciality water bag 1, can drive the rising of speciality water temperature in the speciality water bag 1 and reduce, thereby reach the purpose at the heat preservation in large tracts of land raft foundation concrete 12 surface and cooling, make and effectively prevent large tracts of land raft foundation concrete 12 and produce the crack.
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 (8)
1. The utility model provides a prevent that large tracts of land raft foundation from producing cracked equipment, includes a plurality of speciality water bags (1), speciality water tank (2), circulating pump (3), temperature control equipment (4) and temperature measurement equipment (16), its characterized in that: the outlet of the special water tank (2) is connected with the left end of the circulating pump (3), and the right end of the circulating pump (3) is connected with the water inlet end of the temperature control device (4);
the temperature control device is characterized in that a special water pipe (5) is arranged inside the special water bag (1), one end of the special water pipe (5) is fixedly connected with a water adding pipe (6), and one end, far away from the special water bag (1), of the water adding pipe (6) is connected with the output end of the temperature control device (4) through a connecting piece (7).
2. The apparatus for preventing cracks in large area raft foundation according to claim 1, wherein the number of the special water bags (1) is four, and four independent special water bags (1) form the first partition (8), the second partition (9), the third partition (10) and the fourth partition (11), respectively.
3. The equipment for preventing large-area raft foundations from cracking as claimed in claim 1, wherein the raft foundation concrete (12) distributed in double layers is installed on the back of the special water bag (1), a water-stop steel plate (13) is installed between the two layers of raft foundation concrete (12), and a reinforcing plate (15) is installed on the back of the raft foundation concrete (12) on the lower layer.
4. An apparatus for preventing large area raft foundations from cracking according to claim 1, characterised in that there are construction gaps (14) between adjacent raft foundation concrete (12) and adjacent water stop steel plates (13).
5. The equipment for preventing the large-area raft foundation from cracking according to claim 3, wherein the input end of the temperature measuring equipment (16) is provided with a temperature measuring head (17), and the temperature measuring head (17) penetrates through the special water bag (1), the raft foundation concrete (12) and the water stop steel plate (13) from front to back.
6. The apparatus for preventing cracks in large area raft foundation as claimed in claim 1, wherein the special water pipes (5) are distributed in serpentine shape in the special water bag (1).
7. The equipment for preventing the large-area raft foundation from cracking according to claim 1, wherein the joints of the inner walls of the connecting pieces (7) and the water adding pipes (6) are provided with screw threads (18), and the connecting pieces (7) and the water adding pipes (6) are in threaded connection through the screw threads (18).
8. A use method of equipment for preventing large-area raft foundations from cracking is characterized by comprising the following steps:
a, water bag filling: cleaning the outside of raft foundation concrete (12) to avoid sharp spines or particles which are easy to damage special water bags (1) from being left on the outside of the raft foundation concrete (12), then installing a plurality of independent subarea special water bags (1) on the outside of the raft foundation concrete (12), and then inserting snake-shaped distributed special water pipes (5) into the special water bags (1);
b, injecting special water: the special water in the special water tank (2) can be injected into the special water pipe (5) through the circulating pump (3), so that the special water pipe (5) is filled with the special water, then the water adding pipe (6) is separated from the special water pipe (5), and the special water pipe (5) is sealed, so that the special water in the special water pipe (5) is always reserved in the special water pipe (5);
c, regulating the special water temperature: the special water pumped out from the circulating pump (3) and passing through the temperature control device (4) can be subjected to temperature adjustment according to the needs, so that the temperature of the special water input into the water adding pipe (6) meets the heat preservation needs;
d, temperature control stage: temperature measuring equipment (16) can carry out real-time supervision to speciality water bag (1) through temperature probe (17), raft foundation concrete (12), the temperature in stagnant water steel sheet (13) and construction gap (14), when the temperature that detects and suitable temperature gap are too big, can control temperature measuring equipment (4) and regulate and control the speciality water temperature that enters into in filler pipe (6), make and pour into speciality water pipe (5) in through circulating pump (3), make the temperature in speciality water pipe (5) and speciality water bag (1) remain at a suitable temperature throughout.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911281715.8A CN111042175A (en) | 2019-12-13 | 2019-12-13 | Equipment for preventing large-area raft foundation from cracking and using method thereof |
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| CN201911281715.8A CN111042175A (en) | 2019-12-13 | 2019-12-13 | Equipment for preventing large-area raft foundation from cracking and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113186973A (en) * | 2021-05-08 | 2021-07-30 | 无锡太湖学院 | Hydraulic engineering retaining wall based on thing networking |
| CN117359791A (en) * | 2023-12-08 | 2024-01-09 | 克拉玛依市禹荣有限责任公司 | Intelligent temperature control electric tracing device for winter construction concrete |
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Application publication date: 20200421 |
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| RJ01 | Rejection of invention patent application after publication |