CN116044196A - Masonry reinforcement structure, masonry wall and construction method of masonry wall - Google Patents
Masonry reinforcement structure, masonry wall and construction method of masonry wall Download PDFInfo
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- CN116044196A CN116044196A CN202211257594.5A CN202211257594A CN116044196A CN 116044196 A CN116044196 A CN 116044196A CN 202211257594 A CN202211257594 A CN 202211257594A CN 116044196 A CN116044196 A CN 116044196A
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 43
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 239000002002 slurry Substances 0.000 claims abstract description 71
- 239000011440 grout Substances 0.000 claims description 51
- 239000004568 cement Substances 0.000 claims description 43
- 239000011148 porous material Substances 0.000 claims description 38
- 238000012545 processing Methods 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 description 59
- 238000000034 method Methods 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 230000008569 process Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 13
- 238000012360 testing method Methods 0.000 description 11
- 239000006260 foam Substances 0.000 description 10
- 238000007569 slipcasting Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
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Abstract
The application discloses brickwork reinforced structure, brickwork wall and construction method thereof, brickwork reinforced structure includes: the brickwork is provided with a brickwork space; the reinforced pipe is provided with an upper opening, a lower opening, a side wall and a cavity formed by surrounding the side wall, and the side wall is provided with a through hole. The reinforced pipe is located in the masonry space, and slurry injected from the upper opening of the reinforced pipe passes through the through hole to connect the reinforced pipe and the masonry into a whole. The technical problem that strengthens the reinforcement to the brickwork wall has been solved to this application.
Description
Technical Field
The application relates to the technical field of buildings, in particular to a masonry reinforcement structure, a masonry wall and a construction method thereof.
Background
A large number of masonry structures exist in China, and particularly most of rural existing houses are masonry structures. The masonry is formed by building blocks and mortar, belongs to typical brittle materials, and has early construction years of partial houses, and most of the buildings cannot meet the current safety requirements of China. The basic mechanical characteristics of the masonry are higher compressive strength, and extremely low tensile and shear strength, thereby resulting in poor stability of the masonry structure as a whole. The construction of a large number of agricultural houses in remote rural areas and vast mountain areas does not adopt enhancement measures, so that a large number of agricultural houses have great potential safety hazards due to insufficient strength. At present, no simple and effective measures are available for strengthening the existing masonry building.
Based on the above, it is necessary to develop new masonry reinforcement schemes to increase the strength of existing old masonry structures.
Disclosure of Invention
In order to solve the technical problem that current brickwork building strength is not enough, this application provides a brickwork reinforced structure.
The application provides a brickwork reinforced structure adopts following technical scheme: a masonry reinforcement structure comprising: the brickwork is provided with a brickwork space; the reinforcing pipe is provided with an upper opening, a lower opening, a side wall and a cavity formed by surrounding the side wall, and the side wall is provided with a through hole; the reinforced pipe is located in the masonry space, and slurry injected from the upper opening of the reinforced pipe enters the cavity and passes through the through hole to connect the reinforced pipe and the masonry into a whole.
Through adopting above-mentioned technical scheme, at first, set up the stiffening tube in the brickwork and fix the stiffening tube in the brickwork through grout, strengthened the tensile and shear strength of brickwork. Secondly, be equipped with the through-hole at the lateral wall of strengthening pipe, can in time arrange the outside of strengthening pipe through the through-hole with the air in the pipe in the in-process of slip casting, the slip casting is more smooth and easy, be favorable to reducing the probability that produces the piston effect, avoids producing compressed air at the in-process of slip casting as far as possible and leads to the thick liquid to break in the intraductal bulk strength who influences the pouring. Finally, the cement paste entering the reinforcing pipe flows to the outside of the reinforcing pipe through the through hole, the masonry and the reinforcing pipe can be connected and fixed into a whole through the cement paste, and the strength of the whole structure is higher.
In a further aspect, the reinforcing structure further includes a grouting pipe, the grouting pipe having a grouting inlet and a grouting outlet, at least a portion of the grouting pipe extending into the cavity of the reinforcing pipe from the upper opening of the reinforcing pipe, the grouting outlet being spaced from the lower opening by a distance of at least 50 mm; wherein, the slurry enters the cavity through the slurry inlet.
By adopting the technical scheme, the possibility of piston effect generation can be further reduced by arranging the grouting pipe with smaller diameter in the reinforced pipe for grouting. The grout outlet is spaced from the lower opening, so that the grout can flow out from the grout outlet, the grout is filled into the reinforcing pipe and the masonry space from bottom to top, and the possibility of reducing structural strength due to air mixing in the grouting process is reduced.
Further, the grouting pipe body is provided with a plurality of grouting holes, the grouting holes are arranged in an array mode along the length direction of the grouting pipe, and the diameter range of each grouting hole (54) is 4-8 mm.
By adopting the technical scheme, the smoothness of grouting can be further improved, and the piston effect probability is reduced.
Further, the plurality of grout outlet holes are uniformly distributed along the length direction of the grouting pipe, and the hole spacing between the adjacent grout outlet holes (54) along the length direction of the grouting pipe (5) is more than or equal to 100 mm.
By adopting the technical scheme, the ideal water soaking ratio can be achieved in the grouting process, the air content in grouting is effectively reduced, the piston effect is restrained, and the grouting quality is improved.
Further, the intervals between the slurry outlets distributed along the direction from the slurry injecting pipe to the slurry inlet are larger and larger, and the hole intervals between the adjacent slurry outlets (54) along the length direction of the slurry injecting pipe (5) are more than or equal to 100 mm.
By adopting the technical scheme, the density of the slurry outlet holes near the slurry outlet is high, the density of the slurry outlet holes at the position closer to the slurry inlet is lower, the better water soaking ratio can be achieved in the grouting process, the air content in grouting is effectively reduced, the piston effect is restrained, and the grouting quality is improved.
Further, the grout outlet is positioned in the reinforced pipe and 100 mm away from the lower opening.
By adopting the technical scheme, the better slurry outlet height is set, so that the cement slurry can flow out from the slurry outlet more favorably, and the possibility of reducing the structural strength by mixing air in the grouting process is reduced.
In order to solve the technical problem that masonry wall intensity is not enough, this application still provides a masonry wall, including above masonry reinforced structure.
Through adopting above-mentioned technical scheme, can strengthen the holistic intensity of brickwork wall through brickwork reinforced structure, strengthen the tensile and the shear strength of brickwork wall, improve the security of brickwork wall.
Further, the masonry reinforcement structure is arranged in the masonry wall in a transverse and/or longitudinal direction.
Through adopting above-mentioned technical scheme, can transversely strengthen masonry wall with vertically, improve masonry wall overall plane's intensity, through the connection reinforcement that masonry reinforced structure is netted of different masonry walls, make whole masonry building intensity higher stability better.
In order to solve the technical problem of insufficient masonry building strength, the application also provides a masonry wall reinforcing construction method which is suitable for the masonry wall.
The application provides a masonry wall construction method, which comprises the following steps: drilling: erecting pore-forming equipment at the edge of the masonry wall, and processing pore passages of the masonry wall, wherein the diameters of the pore passages are 20 mm larger than those of the reinforcing pipes; and (3) detection: the whole course mapping is carried out on the pore canal by using a pore measurer, and the pore forming is stopped when the pore canal reaches a preset depth; cleaning: cleaning sundries in the pore canal; processing: processing a reinforcing pipe, and drilling through holes on the side wall of the reinforcing pipe according to a certain rule; burying a pipe: connecting and fixing the reinforced pipe or a plurality of reinforced pipes with the drilled through holes into a reinforced pipe group with a certain length, placing the reinforced pipe group in the pore canal, and rotating the reinforced pipe group while placing the reinforced pipe group until reaching a preset position; grouting: injecting cement slurry into the reinforced pipe from the upper opening position for multiple times, wherein the grouting pressure is between 0.1 and 0.3MPa, and the grouting amount is controlled according to the aperture and is controlled within 1 meter depth each time; the slurry flows out of the reinforced pipe through the through holes and fills the pore canal; and checking and accepting, namely checking and accepting the construction result.
By adopting the technical scheme, the existing stock masonry building can be transformed and reinforced, the newly built masonry building can be reinforced in the construction process, the construction method is simple and easy to implement, and can be implemented without a very specialized construction team, thereby being beneficial to comprehensive popularization.
In the processing step, a grouting pipe is further arranged in the reinforcing pipe, and a grouting outlet of the grouting pipe is positioned in the reinforcing pipe and is 100 mm away from the lower opening; in the grouting step, cement slurry is injected from the slurry inlet, and the cement slurry flows into the reinforcing pipe through the slurry outlet and the slurry outlet.
Through adopting above-mentioned technical scheme, carry out slip casting from the slip casting pipe and set for better play thick liquid height, can more be favorable to the grout to flow from the play thick liquid mouth, reduced the possibility that mixes air in the reinforcement pipe in the slip casting in-process and reduce structural strength.
In summary, the present application has at least one of the following beneficial technical effects:
1. the masonry reinforcement structure grouting is smoother, the probability of piston effect generation is reduced, the ideal water soaking ratio can be achieved in the grouting process, the air content in grouting is effectively reduced, the piston effect generation is restrained, and the overall strength of the masonry is improved.
2. The masonry wall can strengthen tensile strength and shear strength of the masonry wall, and improves safety of the masonry wall.
3. The masonry wall construction method can strengthen the existing stock masonry building and newly built masonry building, is simple and feasible, can be implemented without a very professional construction team, and is beneficial to comprehensive popularization.
Drawings
FIG. 1 is a schematic view of a first embodiment of a masonry reinforcement structure of the present application;
FIG. 2 is a schematic view of a reinforcement pipe in accordance with one embodiment of the masonry reinforcement structure of the present application;
FIG. 3 is a schematic structural view of a second embodiment of a masonry reinforcement structure of the present application;
FIG. 4 is a schematic view of a second reinforcing pipe and rebar assembly in accordance with an embodiment of the masonry reinforcement structure of the present application;
FIG. 5 is a schematic structural view of a third embodiment of a masonry reinforcement structure of the present application;
FIG. 6 is a schematic view of the construction of a reinforcing pipe and grouting pipe assembly in a third embodiment of the masonry wall reinforcement structure of the present application;
FIG. 7 is a schematic structural view of a fourth embodiment of a masonry reinforcement structure of the present application;
FIG. 8 is a schematic view of an embodiment of a masonry wall of the present application;
FIG. 9 is a flow chart of a masonry wall construction method of the present application;
FIG. 10 is a graph of cell row number versus foam height;
FIG. 11 is a graph of the number of rows of openings versus the amount of water produced;
FIG. 12 is a graph of cell row number versus bubble water ratio;
fig. 13 is a graph of distribution versus bubble water ratio.
Reference numerals:
1. a reinforcing tube; 11. an upper opening; 12. a sidewall; 13. a lower opening; 14. a through hole; 15. a cavity; 2. masonry wall; 21. a duct; 3. cement paste; 4. reinforcing steel bars; 5. grouting pipe; 51. a slurry inlet; 52. a slurry outlet; 53. a pipe; 54. and (5) a pulp outlet hole.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present application, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. Features of the embodiments described below may be combined with each other without conflict.
In the drawing, the dashed arrows indicate the flow direction of the grout 3, and the flow directions of some through holes 14 and grout outlet holes 54 are not indicated by arrows, so that they are omitted, and they do not indicate that no grout 3 flows out.
Embodiment one:
referring to fig. 1 and 2, an embodiment of a masonry reinforcement structure is shown. The masonry wall 2 is provided with a pore canal 21, a reinforcing pipe 1 is arranged in the pore canal 21, the reinforcing pipe 1 is provided with an upper opening 11 and a lower opening 13, and the lower opening 13 of the reinforcing pipe 1 is higher than the bottom surface of the masonry wall 2. The reinforced pipe 1 is also provided with a side wall 12, the side wall 12 surrounds a cavity 15, and the side wall 12 is provided with a through hole 14 which can be communicated with the cavity 15 and the external space of the reinforced pipe 1. The through holes 14 are uniformly distributed along the length direction of the reinforcing pipe 1, and the reinforcing pipe can be designed into a structure with dense through holes 14 near the lower opening 13 of the reinforcing pipe 1 and relatively loose lower dense upper sparse near the upper opening 11 according to the requirement. In the unfolded state of the wall of the reinforcing tube 1, the through holes 14 are arranged in a plum blossom shape.
The construction process and principle of the masonry reinforcement structure of the embodiment are as follows: the masonry wall 2 is drilled with a hole 21, and the size of the hole 21 is 20 mm larger than the outer diameter of the reinforced pipe 1. The reinforcing pipe 1 is placed in the pore canal 21 for fixation, the reinforcing pipe 1 is preferably positioned at the center of the pore canal 21, the upper opening 11 of the reinforcing pipe 1 is higher than the upper surface of the masonry wall 2, and the lower opening 13 of the reinforcing pipe 1 is higher than the bottom surface of the pore canal 21, so that the cement slurry 3 can flow out from the lower opening 13 conveniently. The upper port 11 of the reinforcing pipe 1 is connected with grouting equipment in a sealing way, and cement slurry 3 is injected into the cavity 15 of the reinforcing pipe 1 from the upper port 11. The grouting pressure is controlled between 0.1 and 0.3MPa, and the grouting amount is controlled within 1 meter depth each time, so that the grouting amount is prevented from being excessively large, and cement slurry 3 is prevented from seeping out from brick joints. The flow direction of the cement slurry 3 is shown by the dotted arrow in the figure, the cement slurry 3 entering the cavity 15 flows out from the lower opening 13 to fill the bottom space of the pore canal 21, when the cement slurry 3 in the pore canal 21 passes through the lower opening 13, the cement slurry 3 continuously flows out from the lower opening 13 to squeeze the cement slurry 3 in the pore canal 21 to the upper side of the pore canal 21, and simultaneously, the air above the cement slurry 3 is discharged from the pore canal 21, and at this time, the cement slurry 3 in the cavity 15 is discharged from the through hole 14 to the cavity 15. Through constantly pouring into grout 3 from the upper port 11 of strengthening pipe 1, finally be full of grout 3 in the pore 21, firmly connect strengthening pipe 1 and brickwork as an organic whole after grout 3 solidifies. The portion of the reinforcing pipe 1 above the upper surface of the masonry wall 2 may be cut to be flush with the upper surface of the masonry wall 2 as required. Because the reinforced pipe 1 is added in the masonry wall 2 and is connected with the masonry wall 2 into a whole through cement, the structural strength of the masonry wall 2 is greatly enhanced.
Embodiment two:
referring to fig. 3 and 4, another masonry reinforcement structure embodiment is shown. Unlike the first embodiment, the reinforcing bars 4 are assembled in the reinforcing tube 1, and the reinforcing bars 4 are positioned in the cavity 15 of the reinforcing tube 1 and fixedly connected with the reinforcing tube 1, and can be fixed by welding or can be assembled on a bracket in the reinforcing tube 1 by screws. In this embodiment, two ends of the reinforcing steel bar 4 exceed the upper opening 11 and the lower opening 13 of the reinforcing pipe 1, and in a specific implementation, two ends of the reinforcing steel bar 4 may be flush with the upper opening 11 and the lower opening 13, or may be located in the cavity 15 of the reinforcing pipe 1. The action of the steel bars 4 is beneficial to the smooth entry of the cement paste 3 into the pore canal 21 from the cavity 15 of the reinforcing pipe 1, and the interruption of the cement paste 3 in the cavity 15 caused by the piston effect is avoided as much as possible. The steel bars 4 can also play a role in increasing the structural strength of the masonry.
The principle of the masonry reinforcement structure of the present embodiment is different from that of the first embodiment in that cement slurry 3 flows into the hole 21 along the reinforcing steel bars 4 after entering from the upper opening 11 of the reinforcement pipe 1, so that the probability of generating a piston effect in the grouting process is reduced, and the possibility of interrupting the cement slurry 3 in the cavity 15 is effectively reduced.
Embodiment III:
referring to fig. 5 and 6, a third embodiment of the present application is shown. Unlike the first embodiment, the grouting pipe 5 is disposed in the cavity 15 of the reinforcing pipe 1, the grouting pipe 5 is located in the center of the cavity 15 and fixedly connected with the reinforcing pipe 1, the grouting hole 52 of the grouting pipe 5 is higher than the lower hole 13 to 50 mm to 200 mm, and the grouting hole 52 is higher than the upper hole 11 to 200 mm. The pipe wall of the grouting pipe 5 is provided with grouting holes 54, and the grouting holes 54 are uniformly distributed and arranged along the length direction of the grouting pipe 5. In this embodiment, the reinforcing pipe 1 abuts against the bottom surface of the hole 21, the grout outlet 52 of the grouting pipe 5 is higher than the lower opening 13 of the reinforcing pipe 1, and the grout outlet 52 is at least 50 mm away from the lower opening 13, and the optimal distance is 100 mm.
The working process and principle of the masonry reinforcement structure of the present embodiment are different from those of the first embodiment in that the grout inlet 51 of the grouting pipe 5 is in sealing connection with grouting equipment, and the grout 3 is injected into the cavity 15 of the reinforcement pipe 1 from the grout inlet 51, and the flowing direction of the grout 3 is shown by the dashed arrow in the figure. The cement slurry 3 enters the lower opening 13 of the reinforcing pipe 1 from the grouting pipe 5 and fills the cavity 15 continuously, the cement slurry 3 in the cavity 15 continuously flows out of the through holes 14 into the pore channels 21, and when the cement slurry 3 passes through the slurry outlet 52 of the grouting pipe 5, the cement slurry 3 flows out of the slurry outlet 52 and the slurry outlet 54 into the cavity 15, so that the pore channels 21 are filled with the cement slurry 3 continuously.
In a specific implementation process, the arrangement manner of the grout outlet holes 54 may be changed, for example, the pitch of the grout outlet holes 54 from the grout outlet 52 along the grouting pipe 5 to the grout inlet 51 is larger and larger, that is, the structure of dense and sparse arrangement is adopted, the diameter of the grout outlet holes 54 ranges from 4 mm to 8 mm, and the pitch of the holes of the adjacent grout outlet holes 54 along the length direction of the grouting pipe 5 is greater than or equal to 100 mm.
The through holes 14 in the first embodiment and the slurry outlet holes 54 in the third embodiment are designed according to uniformly distributed or dense-sparse structures, because the probability of occurrence of a piston effect can be reduced in the grouting process by adopting the structural mode in the simulation test process, grouting is more compact, and the overall structural strength is better.
Specific simulation test shows that:
test general idea: attempts to reflect the effect of open cells on the air segment by foam height. I.e. the less foam, the less air segments, the better the grouting effect. The PVC pipe is used for replacing the reinforcing pipe 1, the measuring cylinder is used for replacing a container, and tap water and detergent (foam can be generated) are used for replacing cement slurry grouting. The independent variable x is the number of open pores and the distribution of the pores, the dependent variable y is the water yield, the foam height and the foam water ratio.
Test preparation: the pressure of the civil tap is 0.07Mpa, the length of the PVC pipe is 40cm, the inner diameter is 2cm, the outer diameter is 2.2cm, and the inner diameter of the measuring cylinder is 7cm. The PVC pipe side wall 12 has an opening diameter of 3mm and N is approximately equal to 30. The test serves as a qualitative observation test, and the test results are more obvious at higher heights if the measuring cylinder can reflect the results at a smaller height. The test results are more obvious if the tap pressure is increased to 0.1-0.3 Mpa.
First set of tests: the opposite penetrating holes are uniformly distributed, and the row numbers are respectively as follows: 0, 1, 3, 5, 7, 9, 12, 15, 18.
Second set of experiments: it is known that 9 rows in the first set of experiments are a critical point, 9 rows are constant, and the distribution of openings is changed.
Uniformly distributed (3 cm apart), all up (holes all above the midpoint, 2cm apart), all down (holes all below the midpoint, 2cm apart), up (5 holes above the midpoint, 2cm apart, 3 holes below the midpoint, 3cm apart), down (3 holes above the midpoint, 3cm apart, two holes below the midpoint, 2cm apart).
Through carrying out the equal proportion and reducing to the brickwork reinforced structure of this application, carry out analysis to the water yield, the foam that produces and bubble water ratio in the slip casting process, the result please refer to fig. 10, 11, 12.
The first set of test results can be seen:
1. as the number of rows of open cells increases, the absolute height of the foam decreases first, then increases at 3-7 rows, and finally decreases after 9 rows and gradually stabilizes after 12-18 rows. The water pressure is not dissipated enough in the number of 3-7 rows of holes, the water spraying force of the small holes is large, and bubbles are increased. The total area of the openings after 9 rows increases and the water pressure can already dissipate, at which time the bubble height decreases. As the number of rows further increases, the positive gain increase from the openings is no longer significant.
2. The influence of the increase of the number of the open holes on the drainage is not obvious
3. To avoid errors in human reading, the data is further processed to divide the foam height by the displacement to give the foam to water ratio. The highest fitting degree of 6 items can be found through curve fitting, but the results at 16-18 are not good, and if the 6 items are adopted for fitting, the results with the row number exceeding 18 cannot be predicted. Fitting R to 2 th and 4 th term 2 Are above 90%, and 16-18 are more practical. Actual engineering considerations fit 2 or 4 terms.
y＝0.0012x 2 0.0399x+0.4591 (quadratic),
R 2 ＝0.935；
y＝1E-05x 4 -0.0005x 3 +0.0071x 2 0.0626x+0.4721 (fourth equation),
R 2 ＝0.9405；
y＝-7E-06x 5 +0.0003x 4 -0.0056x 3 +0.0389x 2 -0.131x+0.4904 (six)
Secondary),
R 2 ＝0.966；
y is the bubble water ratio, x is the row number.
Referring to fig. 13, the relationship between distribution and bubble ratio, the second set of experiments reflects:
for quantitative description of the distribution of the open pores, the uniform distribution, the downward deflection, the upward deflection, the total upward deflection and the total downward uniform forming center distance are expressed. The midpoint is the origin, positive upwards and negative downwards. Through calculation, the geometric center distances of all parts are respectively 0 cm-6 cm,10cm and 10cm, and the geometric center distances are uniformly distributed, downward, upward and all the upper parts. The test result shows that the closer the opening is to the lower part, the smaller the drainage ratio is, the smaller the lower and the whole lower differences are, and the adjustment can be carried out according to the needs in the actual engineering. R is calculated by 4 times of fitting 2 Near 1, the fitting degree is extremely high.
y＝-6E-06x 4 -2E-05x 3 +0.0007x 2 +0.0082x+0.1744 (four times formula),
R 2 ＝1；
y is the bubble to water ratio and x is the centroid distance.
The optimal scheme is determined by the simulation experiment: the through holes 14 or the slurry outlet holes 54 are uniformly distributed or distributed in a dense and sparse arrangement, and the number of the open holes can be 9 to 18.
Embodiment four:
referring to fig. 7, a fourth masonry reinforcement structure of the present application is shown. The present embodiment differs from the third embodiment in that the lower opening 13 of the reinforcing tube 1 is arranged at a distance above the bottom surface of the porthole 21.
The working process and principle of the masonry reinforcement structure of the present embodiment are different from those of the third embodiment in that the cement slurry 3 enters the cavity 15 of the reinforcement pipe 1 from the grouting pipe 5, the cement slurry 3 entering the cavity 15 flows out from the lower opening 13 to fill the bottom space of the duct 21, when the cement slurry 3 in the duct 21 is over the lower opening 13, the cement slurry 3 continuously flows out from the lower opening 13 to press the cement slurry 3 in the duct 21 to the upper side of the duct 21, and simultaneously, the air above the cement slurry 3 is discharged from the duct 21, and at this time, the cement slurry 3 in the cavity 15 is discharged from the through hole 14 to the cavity 15. When the grout 3 passes through the grout outlet 52 of the grouting pipe 5, the grout 3 flows out of the grout outlet 54 into the cavity 15 of the reinforcing pipe 1. Through constantly pouring cement paste 3 into from the thick liquid mouth 51 of slip casting pipe 5, finally the pore 21 is full of cement paste 3, and the reinforcing pipe 1 is firmly connected as an organic whole with the brickwork after the cement paste 3 solidifies.
Fifth embodiment:
please refer to fig. 8, this embodiment discloses a masonry wall 2, and masonry wall 2 is interior through horizontal and vertical setting up masonry reinforced structure, can consolidate masonry wall 2 wholly, guarantees masonry wall 2's steadiness.
Example six:
referring to fig. 9, the present embodiment discloses a masonry reinforcement construction method, which specifically includes, but is not limited to, steps S1-S7.
S1, drilling: and (3) erecting pore-forming equipment at the edge of the masonry wall 2, and processing pore canal 21 on the masonry wall 2, wherein the diameter of the pore canal 21 is 20 mm larger than that of the reinforced pipe 1.
S2, detecting: the hole 21 is mapped through the whole process by using a hole measuring instrument, and the hole forming is stopped when the predetermined depth is reached.
S3, cleaning: the impurities in the duct 21 are cleaned.
S4, processing: processing the reinforced pipe 1, and drilling through holes 14 on the side wall 12 of the reinforced pipe 1 according to a certain rule.
S5, pipe burying: the reinforcing pipe 1 or the reinforcing pipes 1 with the through holes 14 drilled are connected and fixed to form a reinforcing pipe 1 group with a certain length, and the reinforcing pipes are placed in the pore canal 21 and rotated while being placed until reaching a preset position.
S6, grouting: grouting 3 to the reinforced pipe 1 from the position of the upper opening 11 for multiple times, wherein the grouting pressure is between 0.1 and 0.3MPa, the grouting amount is controlled according to the aperture, and the grouting amount is controlled within 1 meter depth each time; the slurry flows out of the reinforcing pipe 1 through the through holes 14 and fills the channels 21.
S7, checking and accepting construction results.
The order of the above process steps may be varied according to the actual requirements.
Embodiment seven:
unlike the sixth embodiment, in the processing step, the grouting pipe 5 is further disposed in the reinforcing pipe 1, and the grout outlet 52 of the grouting pipe 5 is located in the reinforcing pipe 1 and is 50 to 200 mm away from the lower port 13; in the grouting step, cement slurry 3 is injected from the slurry inlet 51, and the cement slurry 3 flows into the reinforcing pipe 1 through the slurry outlet 52 and the slurry outlet 54.
In the above embodiment, the reinforcing pipe 1 and the grouting pipe 5 may be cylindrical pipes or square pipes or polygonal pipes, the through holes 14 and the grouting holes 54 may be round holes or polygonal holes, and the masonry space cross section may be circular or rectangular. The through holes 14 and the slurry outlet holes 54 are uniformly distributed in the circumferential direction of the same section, and the number of the through holes can be 3, 4, 6 and 8. The through holes 14 and the slurry outlet holes 54 are staggered in different cross sections in the axial direction. The through holes 14 and the slurry outlet holes 54 may be linear or curved when unevenly arranged along the axial direction, but the arrangement mode that the axial direction is close up and close down and the slurry outlet holes 52 are arranged downward, and the direction that the axial direction is close to the upper opening 11 or the slurry inlet holes 51 is arranged upward is generally maintained.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present invention, and various changes, modifications, substitutions and alterations can be made herein without departing from the spirit and scope of the invention, which are to be defined by the appended claims.
Claims (10)
1. A masonry reinforcement structure comprising:
the brickwork is provided with a brickwork space;
the reinforced pipe (1) is provided with an upper opening (11), a lower opening (13), a side wall (12) and a cavity (15) formed by surrounding the side wall (12), wherein the side wall (12) is provided with a through hole (14);
the reinforced pipe (1) is located in the masonry space, and slurry injected from the upper opening (11) of the reinforced pipe (1) enters the cavity (15) and passes through the through hole (14) to connect the reinforced pipe (1) and the masonry into a whole.
2. A masonry reinforcement structure according to claim 1, further comprising a grouting pipe (5), the grouting pipe (5) having a grout inlet (51) and a grout outlet (52), at least part of the grouting pipe (5) extending from an upper port (11) of the reinforcement pipe (1) into a cavity (15) of the reinforcement pipe (1), the grout outlet (52) being at a distance of at least 50 mm from the lower port (13); wherein the slurry enters the cavity (15) through the slurry inlet (51).
3. The masonry reinforcement structure according to claim 2, wherein the grouting pipe (5) is provided with a plurality of grout outlet holes (54), the plurality of grout outlet holes (54) are arranged in an array along the length direction of the grouting pipe (5), and the grout outlet holes (54) have a diameter ranging from 4 mm to 8 mm.
4. A masonry reinforcement structure according to claim 3, wherein the plurality of grout outlet holes (54) are uniformly distributed along the length direction of the grouting pipe (5), and the hole pitch between adjacent grout outlet holes (54) along the length direction of the grouting pipe (5) is 100 mm or more.
5. A masonry reinforcement structure according to claim 3, wherein the plurality of grout outlet holes (54) are arranged at a distance from the grout outlet (52) along the grouting pipe (5) toward the grout inlet (51) of greater and greater than or equal to 100 mm in hole spacing between adjacent grout outlet holes (54) along the length of the grouting pipe (5).
6. A masonry reinforcement structure according to claim 2, characterized in that the grout outlet (52) is located in the reinforcement pipe (1) 100 mm from the lower port (13).
7. A masonry wall comprising a masonry reinforcement structure according to any one of claims 1 to 6.
8. A masonry wall according to claim 7, characterized in that the masonry reinforcement structure is arranged laterally and/or longitudinally in the masonry wall (2).
9. A masonry wall construction method, characterized by being applied to a masonry wall (2) according to claim 8, said construction method comprising:
drilling: erecting pore-forming equipment at the edge of the masonry wall (2), and processing pore channels (21) on the masonry wall (2), wherein the diameter of the pore channels (21) is 20 mm larger than that of the reinforced pipe (1);
and (3) detection: the pore canal (21) is mapped in the whole course by using a pore measurer, and the pore forming is stopped when the predetermined depth is reached;
cleaning: cleaning up sundries in the pore canal (21);
processing: machining the reinforced pipe (1), and drilling through holes (14) on the side wall (12) of the reinforced pipe (1) according to a certain rule;
burying a pipe: connecting and fixing the reinforced pipe (1) with the through hole (14) or a plurality of reinforced pipes (1) into a reinforced pipe (1) group with a certain length, placing the reinforced pipe group in the pore canal (21), and rotating while placing until reaching a preset position;
grouting: injecting cement slurry (3) into the reinforced pipe (1) from the upper opening (11) for several times, wherein the grouting pressure is between 0.1 and 0.3MPa, and the grouting amount is controlled according to the aperture and is controlled within 1 meter depth each time; the slurry flows out of the reinforced pipe (1) through the through holes (14) and fills the pore channels (21);
and checking and accepting, namely checking and accepting the construction result.
10. A masonry wall construction method according to claim 9, characterized in that in the working step a grouting pipe (5) is further arranged in the reinforcement pipe (1), a grout outlet (52) of the grouting pipe (5) is located in the reinforcement pipe (1) and 100 mm from the lower opening (13), in that in the grouting step cement grout (3) is injected from a grout inlet (51), and the cement grout (3) flows into the reinforcement pipe (1) through the grout outlet (52) and grout outlet holes (54).
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| CN202211257594.5A CN116044196A (en) | 2022-10-14 | 2022-10-14 | Masonry reinforcement structure, masonry wall and construction method of masonry wall |
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