CN109403653B - Masonry hooping kiln reinforcing method for improving overall stability of cave dwelling by adopting carbon fiber net - Google Patents
Masonry hooping kiln reinforcing method for improving overall stability of cave dwelling by adopting carbon fiber net Download PDFInfo
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- CN109403653B CN109403653B CN201811232736.6A CN201811232736A CN109403653B CN 109403653 B CN109403653 B CN 109403653B CN 201811232736 A CN201811232736 A CN 201811232736A CN 109403653 B CN109403653 B CN 109403653B
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0281—Repairing or restoring roofing or roof covering
Abstract
The invention discloses a masonry hoop kiln reinforcing method for improving overall stability of a cave dwelling by adopting a carbon fiber net, which comprises the following steps: firstly, treating a kiln top covering soil layer: leveling and tamping a covering soil layer on the upper part of the masonry hooping kiln to be reinforced, and then paving and tamping a lime soil layer on the covering soil layer; secondly, dismantling a kiln top enclosing wall; thirdly, shear key construction: constructing shear keys on the upper parts of the peripheral walls of the masonry hoop kiln to be reinforced; fourthly, construction of the carbon fiber net reinforced structure: the carbon fiber net reinforcing structure comprises a kiln top enclosure beam supported on the wall body around the masonry hoop kiln to be reinforced and a carbon fiber net arranged on the inner side of the kiln top enclosure beam, and the periphery of the carbon fiber net is poured in the kiln top enclosure beam; and fifthly, constructing the front wall and paving the covering soil layer. The method has the advantages of simple steps, reasonable design, simple and convenient construction and good use effect, and can comprehensively and integrally reinforce the existing masonry hoop kiln by adopting a mode of combining the treatment of the kiln top soil covering layer and the surrounding and protecting beams of the kiln top with the carbon fiber net, thereby effectively improving the stability of the hoop kiln.
Description
Technical Field
The invention belongs to the technical field of cave dwelling reinforcement, and particularly relates to a masonry hoop kiln reinforcement method for improving overall stability of a cave dwelling by adopting a carbon fiber net.
Background
The cave is an ancient dwelling form of residents on loess plateau in northwest of China, and the history of the cave-type dwelling can be traced back to more than four thousand years ago. The earth space is utilized by the masses living in the plain rivers, dams, sources, platforms and plains on the loess plateau, and the cave is built by bricks and stones, adobes and yellow grass mud, which is called a kiln hoop, and the brick and stone kiln hoop refers to the cave formed by bricks and stones. The hoop kiln is generally provided with three or five holes in parallel, and has unique and attractive appearance, good lighting effect, and warmness in winter and coolness in summer. The exposed door faces of the cave openings of the hoop kiln are kiln faces, the supporting parts of the two cave openings which are intersected are kiln legs, and the kiln legs which are positioned at the leftmost side and the rightmost side of the hoop kiln are side kiln legs. The hooping kiln is of a cubic structure, and a soil layer covered on the top of the hooping kiln is called a kiln top covering soil layer. The upper parts of the peripheral walls of the hoop kiln are all built with enclosing walls, the enclosing walls are positioned above the kiln top covering soil layer, and the kiln top covering soil layer is positioned in the peripheral walls. The surrounding enclosing walls in the masonry hooping kiln are all walls built by bricks and stones. For the masonry hoop kiln, as the front, the rear, the left and the right sides of the cave are all empty, and no effective support or restriction is arranged on the four sides, the kiln legs on the left and the right sides of the hoop kiln can generate horizontal thrust under the influence of the earth-filling load of the kiln top, and the kiln faces on the front and the rear sides can generate certain askew flash or bulge under the lateral pressure of the earth-filling side; in addition, when the wall foundation around slightly subsides, the kiln face and the kiln leg of both sides all can produce askew of different degrees and dodge or the slope deformation around the kiln face.
Disclosure of Invention
The invention aims to solve the technical problem that the defects in the prior art are overcome, and the masonry hoop kiln reinforcing method for improving the overall stability of the cave by adopting the carbon fiber net is provided.
In order to solve the technical problems, the invention adopts the technical scheme that: a masonry hoop kiln reinforcing method for improving overall stability of a cave dwelling by adopting a carbon fiber net is characterized by comprising the following steps:
step one, treating a kiln top covering soil layer: leveling and tamping a covering soil layer on the upper part of the masonry hooping kiln to be reinforced, so that the compaction coefficient of the covering soil layer is not less than 0.94; paving a layer of grey soil layer on the tamped covering soil layer, and tamping the grey soil layer to ensure that the compaction coefficient of the grey soil layer is not less than 0.97;
step two, dismantling the enclosing wall of the kiln top: respectively removing the enclosing walls which are arranged at the upper parts of the peripheral wall bodies of the masonry hooping kiln to be reinforced and above the covering soil layer in the step one, wherein all the enclosing walls are removed until the upper wall surface is lower than the upper surface of the lime soil layer in the step one;
step three, shear key construction: constructing a plurality of shear keys on the upper parts of the peripheral walls of the masonry hoop kiln to be reinforced;
step four, constructing a carbon fiber net reinforced structure: constructing a carbon fiber mesh reinforced structure of the masonry hoop kiln to be reinforced;
the carbon fiber net reinforcing structure comprises a kiln top enclosure beam supported on the wall body around the masonry hoop kiln to be reinforced and a carbon fiber net arranged on the inner side of the kiln top enclosure beam, wherein the carbon fiber net is a rectangular carbon fiber net piece which is positioned above the soil layer in the step one and is horizontally arranged, the kiln top enclosure beam is a cast-in-place reinforced concrete ring beam, and the periphery of the carbon fiber net is poured in the kiln top enclosure beam;
the kiln top enclosure beam is horizontally arranged, and the kiln top enclosure beam and the peripheral wall body of the masonry hoop kiln to be reinforced are fixedly connected into a whole through a plurality of shear keys;
step five, constructing the front wall and paving the covering soil layer: constructing a front enclosing wall on a kiln top enclosing beam at the front side of the masonry kiln to be reinforced, covering a layer of earthing soil on the lime soil layer in the step one, tamping the earthing soil to obtain an upper soil covering layer with a compaction coefficient not less than 0.97, and embedding the carbon fiber net in the upper earthing soil layer.
The masonry hoop kiln reinforcing method for improving the overall stability of the cave by adopting the carbon fiber net is characterized by comprising the following steps of: when a grey soil layer is paved on the tamped covering soil layer in the step one, firstly, a layer of pseudo-ginseng grey soil with the thickness of 30cm is paved on the tamped covering soil layer, and then, the paved pseudo-ginseng grey soil is tamped to obtain the grey soil layer with the compaction coefficient not less than 0.97.
The masonry hoop kiln reinforcing method for improving the overall stability of the cave by adopting the carbon fiber net is characterized by comprising the following steps of: in the step one the masonry hoop kiln to be reinforced is a cubic hoop kiln, the peripheral wall body of the masonry hoop kiln to be reinforced is vertical to the layout and comprises a front side wall body located on the front side of the masonry hoop kiln to be reinforced, a rear side wall body located right behind the front side wall body and parallel to the front side wall body, and a left side wall body and a right side wall body respectively connected between the front side wall body and the left side and the right side of the rear side wall body, wherein the left side wall body and the right side wall body are parallel to the layout and are perpendicular to the front side wall body.
The masonry hoop kiln reinforcing method for improving the overall stability of the cave by adopting the carbon fiber net is characterized by comprising the following steps of: when the kiln top enclosing walls are dismantled in the second step, respectively dismantling all the enclosing walls from top to bottom;
the enclosing wall in the second step is a wall body which is positioned at the upper part of the front side wall body, the rear side wall body, the left side wall body or the right side wall body and is positioned above the soil covering layer in the first step;
when the kiln top enclosing walls are dismantled in the second step, each enclosing wall is dismantled until the upper wall surface is 6 cm-12 cm lower than the upper surface of the lime soil layer;
in the fourth step, the vertical distance between the bottom of the carbon fiber net and the bottom surface of the enclosure beam at the top of the kiln is 8-12 cm.
The masonry hoop kiln reinforcing method for improving the overall stability of the cave by adopting the carbon fiber net is characterized by comprising the following steps of: in the fourth step, the kiln top enclosure beam is a rectangular frame beam formed by connecting four peripheral pressing beams;
the front side wall body, the rear side wall body, the left side wall body and the right side wall body are side walls of a masonry hoop kiln to be reinforced, and the peripheral compression beam is a cast-in-place reinforced concrete beam which is horizontally arranged; each peripheral pressure beam is supported right above one side wall, each peripheral pressure beam is arranged in parallel with the side wall supported by the peripheral pressure beam, and each peripheral pressure beam is fixedly connected with the side wall supported by the peripheral pressure beam through a plurality of shear keys;
in the fourth step, four side edges of the carbon fiber net respectively extend into one of the peripheral pressing beams, all four side edges of the carbon fiber net are anchoring edges anchored in the peripheral pressing beams, and the width of each anchoring edge is 8 cm-12 cm.
The masonry hoop kiln reinforcing method for improving the overall stability of the cave by adopting the carbon fiber net is characterized by comprising the following steps of: when the shear key construction is carried out in the third step, a plurality of vertical holes are respectively formed on four side walls of the masonry hoop kiln to be reinforced; the vertical holes in each side wall are distributed from front to back along the central axis of the side wall;
when the carbon fiber net reinforced structure is constructed in the fourth step, concrete is poured into each vertical hole to form a vertical shear key; and each peripheral pressure beam is fixedly connected with the side wall supported by the peripheral pressure beam through a plurality of vertical shear keys.
The masonry hoop kiln reinforcing method for improving the overall stability of the cave by adopting the carbon fiber net is characterized by comprising the following steps of: the vertical holes are cubic holes, the depth of each cubic hole is 8-12 cm, the cross section of each cubic hole is square, and the side length of each cubic hole is 7-9 cm; the distance between two adjacent vertical holes is 50-60 cm.
The masonry hoop kiln reinforcing method for improving the overall stability of the cave by adopting the carbon fiber net is characterized by comprising the following steps of: the lower part of the inner side of each peripheral pressing beam is provided with a plurality of beam body longitudinal steel bars which are distributed on the same horizontal plane; longitudinal steel bars of each beam body are distributed along the longitudinal length direction of the distributed peripheral pressure beams;
the kiln top enclosure beam in the fourth step comprises a lower beam body positioned below the carbon fiber net and an upper beam body positioned above the lower beam body, the upper beam body and the lower beam body are cast into a whole, and the upper beam body and the lower beam body are both cast by impervious concrete;
when the carbon fiber net reinforcing structure of the masonry hoop kiln to be reinforced is constructed in the fourth step, the lower beam body of the top enclosing beam of the kiln is poured, the carbon fiber net is placed, and the upper beam body is poured after the carbon fiber net is placed.
The masonry hoop kiln reinforcing method for improving the overall stability of the cave by adopting the carbon fiber net is characterized by comprising the following steps of: and fifthly, the kiln top enclosure beam on the front side of the masonry kiln to be reinforced is fixedly connected with the front enclosure wall through a plurality of tie bars arranged from left to right, the plurality of tie bars are arranged on the same vertical surface from left to right, and the bottoms of the tie bars are embedded in the kiln top enclosure beam on the front side of the masonry kiln to be reinforced.
The masonry hoop kiln reinforcing method for improving the overall stability of the cave by adopting the carbon fiber net is characterized by comprising the following steps of: before the shear key construction is carried out in the third step, the masonry hoop kiln to be reinforced is required to be reinforced for reinforcing the kiln face, and the process is as follows:
step 101, reinforcing the foundation outside the kiln face: reinforcing the foundation outside the brickwork kiln hoop kiln face to be reinforced to obtain a reinforced foundation;
the reinforced foundation is positioned on the outer side of a kiln face wall to be reinforced, and the kiln face wall to be reinforced is a wall body which is positioned on one side of a kiln face in the masonry hoop kiln to be reinforced and the bottom of which is supported on the ground; the reinforced foundation is rectangular and is abutted against the foundation of the kiln face wall to be reinforced, the length of the reinforced foundation is the same as that of the kiln face wall to be reinforced, and the width of the reinforced foundation is 1-2 m;
102, pouring a plain concrete cushion layer: pouring a plain concrete cushion layer on the reinforced foundation in the step 101;
the plain concrete cushion layer is rectangular and is positioned on the outer side of the kiln face wall to be reinforced, the inner side wall of the plain concrete cushion layer is abutted against the outer side wall of the bottom of the kiln face wall to be reinforced, the length of the plain concrete cushion layer is the same as that of the kiln face wall to be reinforced, the plain concrete cushion layer and the kiln face wall to be reinforced are arranged in parallel, and the front end surface of the plain concrete cushion layer is flush with the front end surface of the kiln face wall to be reinforced;
step 103, building of a reinforced wall: building a reinforced wall on the plain concrete cushion layer from bottom to top in step 102;
the reinforcing wall is positioned on the outer side of the kiln face wall to be reinforced, the inner side wall of the reinforcing wall is abutted against the outer side wall of the kiln face wall to be reinforced, the vertical section of the reinforcing wall is in a right trapezoid shape, and the thickness of the reinforcing wall is gradually reduced from bottom to top; the bottom and the top of the reinforcing wall are rectangular, the length of the reinforcing wall is the same as that of the kiln face wall to be reinforced, the height of the reinforcing wall is the same as that of the kiln face wall to be reinforced, the top surface of the reinforcing wall is flush with that of the kiln face wall to be reinforced, and the reinforcing wall and the kiln face wall to be reinforced form a reinforced kiln face wall;
the bottom thickness D1 of the reinforcing wall is not less than 50cm, the top thickness D2 of the reinforcing wall is not less than 30cm, and the included angle between the outer side wall of the reinforcing wall and the horizontal plane is not more than 80 degrees; the width of the plain concrete cushion layer in the step 102 is not less than the bottom thickness D1 of the reinforced wall;
step 104, shear key construction: constructing a plurality of shear keys on the upper part of the reinforced wall in step 103;
the carbon fiber net reinforced structure in the fourth step further comprises a reinforcing beam supported on the reinforcing wall in the step 103, wherein the reinforcing beam is a cast-in-place reinforced concrete beam which is horizontally arranged and is integrally cast with the kiln top enclosure beam; the reinforcing beam and the reinforcing wall are fixedly connected into a whole through a plurality of shear keys.
Compared with the prior art, the invention has the following advantages:
1. the method has the advantages of simple steps, reasonable design, convenient implementation, low input construction cost and less adopted construction equipment.
2. The construction is simple and convenient, the construction period is short, the construction efficiency is high, the method mainly comprises the steps of treating the covering soil layer on the kiln top, dismantling the enclosing wall on the kiln top, constructing the shear key, constructing the carbon fiber net reinforced structure, building the front wall and paving the covering soil layer, the purpose of reinforcing the hoop kiln can be achieved, and the integral stability of the reinforced kiln hole is good and the cost is low.
3. The adopted reinforcing structure has reasonable design, simple and convenient construction, convenient realization and good use effect, lower input cost, comprehensive and integral reinforcement of the existing masonry hoop kiln by adopting the mode of combining the kiln top soil covering layer treatment, the kiln top surrounding guard beam and the carbon fiber net, simple and quick integral reinforcement of the existing masonry hoop kiln, effective improvement of the integral performance of the masonry hoop kiln and enhancement of the stability of the wall body around the masonry hoop kiln.
4. The adopted kiln face reinforcing method has the advantages of simple steps, reasonable design, convenient realization, low investment and construction cost and less adopted construction equipment; moreover, the construction is simple and convenient, the construction period is short, the construction efficiency is high, the aim of reinforcing the existing hoop kiln face can be simply and conveniently achieved, and the reinforced kiln face is good in stability and low in cost. Adopt the foundation reinforcement, the mode that the flat crown beam in reinforcement wall body reinforcement and upper portion combined together is to the kiln face down, in, go up three aspect and carry out whole reinforcement, the reinforcement back foundation provides a firm basis, and the reinforcement wall forms wholly with the wall body of treating reinforcement kiln face wall, the flat crown beam in upper portion retrains and spacing kiln face wall after consolidating, make the reinforcement back kiln face form firm, effective support and restraint, effectively improve the ability of the impact lateral thrust of brick stone bricklaying kiln face, also can avoid simultaneously taking place the brick that slightly subsides and lead to because of kiln face root foundation, askew of stone bricklaying kiln face production dodges or the slope warp scheduling problem, can effectively improve the stability of kiln face.
5. The popularization and application prospect is wide, the brick and stone hoop kiln can be simply, conveniently and quickly reinforced, the investment cost is low, and the brick and stone hoop kiln is economical and practical.
In conclusion, the method has the advantages of simple steps, reasonable design, simple and convenient construction and good use effect, and can be used for comprehensively and integrally reinforcing the existing masonry hoop kiln in a mode of combining the treatment of the kiln top soil covering layer and the surrounding and protecting beams of the kiln top with the carbon fiber net, thereby effectively improving the stability of the hoop kiln.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is an assembly schematic of the present invention.
Fig. 2 is a schematic view of the reinforcement state of the present invention.
Fig. 3 is a schematic view of the carbon fiber mesh reinforced structure in a vertical reinforcement state.
Fig. 4 is a schematic view showing a plane reinforcement state of the carbon fiber net of the present invention.
Fig. 5 is a schematic view of a reinforcing state when a kiln face wall to be reinforced is reinforced in embodiment 2 of the present invention.
Fig. 6 is a schematic view of a reinforcing state when a kiln face wall to be reinforced is reinforced according to embodiment 3 of the present invention.
Description of reference numerals:
| 1-masonry hooping kiln to be reinforced; | 2-surrounding and protecting the beam on the kiln top; | 3-a carbon fiber web; |
| 4-front enclosing wall; | 5, a front side wall body; | 6-right side wall; |
| 7, a kiln face wall to be reinforced; | 8-plain concrete cushion; | 9-reinforcing walls; |
| 10-vertical tie bars; | 11-lime soil layer; | 12-upper covering soil layer; |
| 13-rear side wall. |
Detailed Description
Example 1
As shown in figure 1, the masonry hoop kiln reinforcing method for improving the overall stability of the cave by adopting the carbon fiber net comprises the following steps:
step one, treating a kiln top covering soil layer: leveling and tamping a covering soil layer on the upper part of the masonry hooping kiln 1 to be reinforced, so that the compaction coefficient of the covering soil layer is not less than 0.94; then, paving a layer of gray soil layer 11 on the tamped covering soil layer, and tamping the gray soil layer 11 to ensure that the compaction coefficient of the gray soil layer 11 is not less than 0.97; the structure of the masonry hoop kiln 1 to be reinforced is shown in detail in fig. 2;
step two, dismantling the enclosing wall of the kiln top: respectively removing the enclosing walls which are arranged at the upper parts of the peripheral wall bodies of the masonry hooping kiln 1 to be reinforced and above the covering soil layer in the step one until the upper wall surfaces are lower than the upper surface of the lime soil layer 11 in the step one;
step three, shear key construction: constructing a plurality of shear keys on the upper parts of the peripheral walls of the masonry hoop kiln 1 to be reinforced;
step four, constructing a carbon fiber net reinforced structure: constructing a carbon fiber mesh reinforced structure of the masonry hoop kiln 1 to be reinforced;
with reference to fig. 3 and 4, the carbon fiber net reinforced structure comprises a kiln top enclosure beam 2 supported on the wall bodies around the masonry hoop kiln 1 to be reinforced and a carbon fiber net 3 arranged on the inner side of the kiln top enclosure beam 2, wherein the carbon fiber net 3 is a rectangular carbon fiber net piece which is positioned above the gray soil layer 11 in the step one and is horizontally arranged, the kiln top enclosure beam 2 is a cast-in-place reinforced concrete ring beam, and the periphery of the carbon fiber net 3 is poured in the kiln top enclosure beam 2;
the kiln top enclosure beam 2 is horizontally arranged, and the kiln top enclosure beam 2 and the peripheral wall body of the masonry hoop kiln 1 to be reinforced are fixedly connected into a whole through a plurality of shear keys;
step five, constructing the front wall and paving the covering soil layer: the method comprises the steps of building a front enclosing wall 4 on a kiln top enclosing beam 2 on the front side of a masonry hoop kiln 1 to be reinforced, covering a layer of earthing soil on a gray soil layer 11 in the step one, tamping the earthing soil to obtain an upper soil covering layer 12 with a compaction coefficient not less than 0.97, and embedding a carbon fiber net 3 in the upper soil covering layer 12. The upper surface of the upper soil covering layer 12 is not lower than the upper surface of the kiln top surrounding beam 2.
The carbon fiber net 3 is positioned above the peripheral wall body of the masonry hoop kiln 1 to be reinforced. In the step one, the covering soil layer is the covering soil layer of the kiln top of the masonry hoop kiln 1 to be reinforced.
And the front enclosing wall 4 is a masonry wall vertically arranged.
The compaction factor, also known as the degree of compaction or degree of compaction, refers to the ratio of the dry density of soil or other road material (e.g., lime soil, etc.) after compaction to the standard maximum dry density, and is a ratio, which may also be expressed as a percentage. Wherein, the dry density of the soil or other road building materials (such as lime soil and the like) after compaction refers to the dry density actually achieved by compaction, and the standard maximum dry density refers to the maximum dry density of the sample obtained by the compaction test.
In the first step, after an original covering soil layer on the upper part of the masonry hoop kiln 1 to be reinforced is leveled and tamped, a layer of gray soil layer 11 is paved and tamped on the tamped covering soil layer, and the compaction coefficient is specifically limited, so that the compactness of a roof base layer can be effectively improved, and the overall strength and the deformation resistance of the roof of the masonry hoop kiln 1 to be reinforced are improved. Meanwhile, the lime soil layer 11 is added on the original covering soil layer to serve as a base layer, so that the bearing effect is achieved, and certain water resistance, permeability resistance and deformation resistance effects are achieved, the bearing capacity of the roof of the masonry hoop kiln 1 to be reinforced is effectively improved, the base layer can ensure that the overall performance of the carbon fiber net 3 can be better exerted, and the integrity and the stability of the roof of the masonry hoop kiln 1 to be reinforced can be effectively improved.
In this embodiment, when the graysoil layer 11 is paved on the tamped overburden layer in the first step, firstly, a layer of pseudo-ginseng graysoil with a thickness of 30cm is paved on the tamped overburden layer, and then, the paved pseudo-ginseng graysoil is tamped, so as to obtain the graysoil layer 11 with a compaction coefficient not less than 0.97.
Wherein the Notoginseng radix gray soil is Notoginseng radix gray soil adopted in conventional civil engineering construction, the Notoginseng radix gray soil is a building material with high strength prepared from lime and clay at a certain ratio, and the volume ratio of calx to clay in the Notoginseng radix gray soil is 3: 7. The clay used is the soil in the area where the masonry band kiln 1 is to be reinforced.
In this embodiment, in step one treat that reinforcement masonry band kiln 1 is the cube band kiln, treat that reinforcement masonry band kiln 1's wall body all is vertical to laying and its including being located the front side wall body 5 of treating reinforcement masonry band kiln 1 front side, be located the front side wall body 5 dead astern and be parallel arrangement's back side wall body 13 with front side wall body 5 and connect respectively in front side wall body 5 with left side wall body and right side wall body 6 between the 13 left and right sides of back side wall body, left side wall body and right side wall body 6 are parallel arrangement and the two all is perpendicular with front side wall body 5 and lays.
Treat that the exposed door face of cave entrance of consolidating masonry hoop kiln 1 is the kiln face, in this embodiment, treat that the front side of consolidating masonry hoop kiln 1 is the kiln face. In actual use, the front side and the rear side of the masonry hoop kiln 1 to be reinforced can be both kiln faces. The wall body that is arranged on one side of the kiln face in the wall body around the masonry hoop kiln 1 to be reinforced is a kiln face wall. Thus, the front wall 5 or the rear wall 13 is the kiln face wall.
In this embodiment, when the enclosure walls on the top of the kiln are removed in the second step, the enclosure walls are removed from top to bottom.
In the second step, the enclosing wall is a wall body which is positioned at the upper parts of the front side wall body 5, the rear side wall body 13, the left side wall body or the right side wall body 6 and is positioned above the covering soil layer in the first step.
In actual construction, the kiln top enclosing wall is usually used for hanging flower baskets and the like, and is also called a flower basket wall. Thus, the enclosure removed in step two is also referred to as a basket wall.
And when the kiln top enclosing walls are dismantled in the second step, dismantling all the enclosing walls until the upper wall surface is 6 cm-12 cm lower than the upper surface of the lime soil layer 11.
In the fourth step, the vertical distance between the bottom of the carbon fiber net 3 and the bottom surface of the kiln top enclosure beam 2 is 8-12 cm.
In this embodiment, when the kiln top enclosing walls are dismantled in the second step, all the enclosing walls are dismantled until the upper wall surface is 8cm lower than the upper surface of the lime soil layer 11. During actual construction, the height of each enclosing wall lower than the upper surface of the lime soil layer 11 can be correspondingly adjusted by dismantling the enclosing walls according to specific requirements.
In this embodiment, the vertical distance between the bottom of the carbon fiber net 3 and the bottom surface of the kiln top enclosure beam 2 is 10 cm. During actual construction, the vertical distance between the bottom of the carbon fiber net 3 and the bottom surface of the kiln top enclosure beam 2 can be correspondingly adjusted according to specific requirements.
In the fourth step, four side edges of the carbon fiber net 3 respectively extend into one of the peripheral pressing beams, all four side edges of the carbon fiber net 3 are anchoring edges anchored in the peripheral pressing beams, and the width of each anchoring edge is 8 cm-12 cm. In this embodiment, the width of the anchoring edge is 10cm, and the width of the anchoring edge can be correspondingly adjusted according to specific requirements.
In the fourth step, the roof surrounding beam 2 is a rectangular frame beam formed by connecting four peripheral pressing beams;
the front side wall 5, the rear side wall 13, the left side wall and the right side wall 6 are side walls of the masonry hoop kiln 1 to be reinforced, and the peripheral compression beams are cast-in-place reinforced concrete beams which are horizontally arranged; each peripheral pressure beam is supported right above one side wall, each peripheral pressure beam is arranged in parallel with the side wall supported by the peripheral pressure beam, and each peripheral pressure beam is fixedly connected with the side wall supported by the peripheral pressure beam through a plurality of shear keys. And each peripheral pressure beam is supported right above the side wall supported by the peripheral pressure beam. The side wall is a wall body built by bricks or stones.
In this embodiment, the cross section of the peripheral pressing beam is rectangular.
The height of the beam body of the kiln top surrounding beam 2 is 18 cm. The width of the roof guard beam 2 (i.e. the peripheral press beam) is 20 cm. During actual construction, the cross section size of the kiln top enclosure beam 2 can be correspondingly adjusted according to specific requirements.
In the embodiment, when the shear key construction is carried out in the third step, a plurality of vertical holes are respectively formed on four side walls of the masonry hoop kiln 1 to be reinforced; the vertical holes in each side wall are distributed from front to back along the central axis of the side wall;
when the carbon fiber net reinforced structure is constructed in the fourth step, concrete is poured into each vertical hole to form a vertical shear key; and each peripheral pressure beam is fixedly connected with the side wall supported by the peripheral pressure beam through a plurality of vertical shear keys.
Therefore, the shear key is a vertical shear key formed by pouring concrete into a vertical hole formed in the upper portion of the side wall.
In order to further improve the shearing resistance effect, the vertical holes are cubic holes, the depth of each cubic hole is 8-12 cm, the cross section of each cubic hole is square, and the side length of each cubic hole is 7-9 cm; the distance between two adjacent vertical holes is 50-60 cm.
In the embodiment, the depth of the cubic hole is 10cm, and the side length of the cross section of the cubic hole is 8 cm; the distance between two adjacent vertical holes is 50-60 cm. During actual construction, the size and the arrangement distance of the vertical holes can be correspondingly adjusted according to specific requirements.
The cube holes can effectively improve the radial firmness of the shear keys, so that the concrete shear keys poured in the cube holes cannot generate radial displacement, a good shear effect is achieved, the connection reliability and the connection strength between the peripheral compression beams and the side walls supported by the peripheral compression beams can be effectively improved, and the peripheral compression beams and the side walls supported by the peripheral compression beams can be fastened and connected into a whole and stressed together.
In order to improve the strength of the kiln top enclosure beam 2, reinforcement needs to be arranged in the kiln top enclosure beam 2. The lower part of the inner side of each peripheral pressing beam is provided with a plurality of beam body longitudinal steel bars which are distributed on the same horizontal plane; and the longitudinal steel bars of each beam body are distributed along the longitudinal length direction of the distributed peripheral pressure beams.
In this embodiment, the reinforcement in the peripheral compression beam is 4B10, that is, the diameter phi of the longitudinal steel bar is 4mm and the arrangement distance is 10 mm.
During actual construction, the reinforcement arrangement condition in the kiln top enclosure beam 2 can be correspondingly adjusted according to specific requirements.
In the fourth step, the kiln top enclosure beam 2 comprises a lower beam body positioned below the carbon fiber net 3 and an upper beam body positioned above the lower beam body, the upper beam body and the lower beam body are cast into a whole, and the upper beam body and the lower beam body are both cast by impervious concrete;
when the carbon fiber net reinforcing structure of the masonry hoop kiln 1 to be reinforced is constructed in the fourth step, the lower beam body of the kiln top surrounding beam 2 is poured, the carbon fiber net 3 is placed, and the upper beam body is poured after the carbon fiber net 3 is placed.
In this embodiment, the beam height of the lower beam is 10 cm. The carbon fiber net 3 is horizontally arranged.
When the carbon fiber net is actually constructed, the kiln top enclosure beam 2 is poured firstly, and when the concrete pouring height of the kiln top enclosure beam 2 is 10cm, the pouring process of the lower beam body is completed; then, paving the carbon fiber net 3, arranging the carbon fiber net 3 above the gray soil layer 11, extending the periphery of the carbon fiber net 3 into the kiln top enclosure beam 2 and the width of the carbon fiber net 3 is 10cm, and then continuously performing concrete pouring on the kiln top enclosure beam 2 and the pouring height of the kiln top enclosure beam is 5cm, so that the carbon fiber net 3 is fixedly anchored in the kiln top enclosure beam 2; and finally, continuously pouring the kiln top enclosure beam 2, wherein the pouring height is 3 cm. The actual construction is very simple. In practical use, the carbon fiber net 3 has certain toughness and deformability, so that the formed carbon fiber net has very good integrity and deformation resistance of a reinforced structure.
In this embodiment, when the carbon fiber mesh reinforced structure is constructed in the fourth step, each peripheral pressing beam in the kiln top enclosure beam 2 is synchronously poured, and the poured concrete is impervious concrete.
And when the kiln top enclosure beam 2 is poured, the poured concrete is impervious concrete. The impervious concrete has an impermeability rating of P8. Thus, the durability and the use effect of the roof guard beam 2 can be further improved. Meanwhile, the anchoring effect of the kiln top surrounding beam 2 on the carbon fiber net 3 can be effectively improved.
In the fourth step, each peripheral pressing beam in the kiln top surrounding beam 2 is integrally poured once, so that the pouring is simple and convenient, the construction is simple and convenient and quick, the kiln top surrounding beam 2 and the carbon fiber net 3 are fixedly connected into a whole, the anchoring effect of the carbon fiber net 3 is good, the integrity of the formed carbon fiber net reinforcing structure is good, the integrity of the masonry hoop kiln 1 to be reinforced can be effectively improved, the peripheral wall body of the masonry hoop kiln 1 to be reinforced is fixedly connected with the kiln top into a whole and is stressed together, the periphery of the masonry hoop kiln 1 to be reinforced is effectively supported or restrained by the carbon fiber net 3 and the kiln top surrounding beam 2, the problem that the front and rear kiln faces are subjected to certain askew flashing or bulging by the lateral pressure of the filling soil due to the horizontal thrust generated by the influence of kiln top soil covering load of the kiln legs at the left and right sides of the hoop kiln is effectively avoided, and when the peripheral foundation is slightly settled, the front and back kiln faces and the kiln legs at two sides can not generate skew flashing or inclined deformation in different degrees.
In order to further improve the reinforcing effect, in the fifth step, a plurality of tie bars are arranged on the same vertical surface from left to right, and the bottom of the tie bars are embedded in the kiln top retaining beam 2 at the front side of the masonry hoop kiln 1 to be reinforced.
In this embodiment, the distance between two adjacent tie bars is 50 cm. During actual reinforcement, the number and the arrangement distance of the tie bars between the kiln top enclosure beam 2 at the front side of the masonry hoop kiln 1 to be reinforced and the front enclosure wall 4 can be correspondingly adjusted according to specific requirements.
In the fifth step, the thickness of the upper cover soil layer 12 is 25cm to 35cm, and the thickness of the upper cover soil layer 12 can be adjusted accordingly according to specific requirements.
In this embodiment, the carbon fiber net 3 is covered with 30cm of covering soil and tamped until the compaction factor is not less than 0.94, thereby obtaining the upper covering soil layer 12.
In step five, the front enclosing wall 4 is also called a basket wall.
The surrounding beam 2 of the kiln top at the front side of the masonry hoop kiln 1 to be reinforced is the peripheral pressing beam supported on the front side wall body 5, and after the front surrounding wall 4 is built on the peripheral pressing beam supported on the front side wall body 5, the stress balance and the overall stability of the peripheral pressing beam can be further improved. The front enclosing wall 4 can protect the peripheral compression beam while improving the integrity and connection strength of the peripheral compression beam supported on the front side wall body 5, and further improves the durability of the peripheral compression beam.
Example 2
In this example, the difference from example 1 is: before the shear key construction is carried out in the third step, the masonry hoop kiln 1 to be reinforced is required to be reinforced by a kiln face, and the process is as follows:
step 101, reinforcing the foundation outside the kiln face: reinforcing the foundation outside the kiln face of the masonry hoop kiln 1 to be reinforced to obtain a reinforced foundation;
the reinforced foundation is positioned outside a kiln face wall 7 to be reinforced, and the kiln face wall 7 to be reinforced is a wall body which is positioned on one side of a kiln face in the masonry hoop kiln 1 to be reinforced and the bottom of which is supported on the ground; the reinforced foundation is rectangular and is abutted against the foundation of the kiln face wall 7 to be reinforced, the length of the reinforced foundation is the same as that of the kiln face wall 7 to be reinforced, and the width of the reinforced foundation is 1-2 m;
102, pouring a plain concrete cushion layer: in step 101, pouring a layer of plain concrete cushion layer 8 on the reinforced foundation, which is detailed in fig. 5;
the plain concrete cushion layer 8 is rectangular and is positioned on the outer side of the kiln face wall 7 to be reinforced, the inner side wall of the plain concrete cushion layer 8 is abutted against the outer side wall of the bottom of the kiln face wall 7 to be reinforced, the length of the plain concrete cushion layer 8 is the same as that of the kiln face wall 7 to be reinforced, the plain concrete cushion layer 8 and the kiln face wall 7 to be reinforced are arranged in parallel, and the front end face of the plain concrete cushion layer 8 is flush with the front end face of the kiln face wall 7 to be reinforced;
step 103, building of a reinforced wall: in step 102, a reinforced wall 9 is built on the plain concrete cushion 8 from bottom to top, which is detailed in fig. 5;
the reinforcing wall 9 is positioned on the outer side of the kiln face wall 7 to be reinforced, the inner side wall of the reinforcing wall is abutted against the outer side wall of the kiln face wall 7 to be reinforced, the vertical section of the reinforcing wall 9 is in a right trapezoid shape, and the thickness of the reinforcing wall is gradually reduced from bottom to top; the bottom and the top of the reinforcing wall 9 are rectangular, the front side wall and the rear side wall of the reinforcing wall 9 are vertically arranged, the length of the reinforcing wall 9 is the same as that of the kiln face wall 7 to be reinforced, the height of the reinforcing wall and the height of the kiln face wall 7 to be reinforced are the same, and the top surface of the reinforcing wall 9 is flush with that of the kiln face wall 7 to be reinforced and forms a reinforced rear kiln face wall;
the bottom thickness D1 of the reinforcing wall 9 is not less than 50cm, the top thickness D2 of the reinforcing wall is not less than 30cm, and the included angle between the outer side wall of the reinforcing wall 9 and the horizontal plane is not more than 80 degrees; the width of the plain concrete cushion layer 8 in the step 102 is not less than the bottom thickness D1 of the reinforced wall 9;
step 104, shear key construction: constructing a plurality of shear keys on the upper part of the reinforcing wall 9 in step 103;
the carbon fiber net reinforced structure in the fourth step further comprises a reinforcing beam supported on the reinforcing wall 9 in the step 103, wherein the reinforcing beam is a cast-in-place reinforced concrete beam which is horizontally arranged and is integrally cast with the kiln top enclosure beam 2; the reinforcing beam and the reinforcing wall 9 are fixedly connected into a whole through a plurality of shear keys.
In this embodiment, the reinforcing beam and the exterior beam 2 (specifically, the peripheral pressure beam supported by the front wall 5) of the kiln top are fastened and connected into a whole. And the reinforcing beam is fixedly connected with a reinforcement cage of the kiln top surrounding beam 2 into a whole. And the reinforcing beam and the kiln top enclosure beam 2 form a kiln top enclosure reinforcing beam.
In this embodiment, the width of the reinforced foundation is 1.5 m. Therefore, the foundation reinforcement is performed within the width range of 1.5m outside the kiln face wall 1 to be reinforced.
In this embodiment, the kiln face wall 7 to be reinforced is a wall body which is located on the front side of the masonry hoop kiln and supported on the ground. Thus, the kiln face wall 7 to be reinforced is a cubic wall.
During actual construction, when the foundation outside the masonry hoop kiln face to be reinforced is reinforced in step 101, reinforcing piles are adopted for reinforcement.
When the foundation outside the masonry hoop kiln face to be reinforced is reinforced, the foundation is reinforced according to a conventional foundation reinforcing method.
In this embodiment, the reinforcing piles are lime piles.
During actual construction, the reinforcing piles can also adopt sand piles, gravel piles, coal cinder lime piles, internal rammed earth piles, CFG piles and the like.
The lime pile is a conventional lime pile for reinforcing a foundation, and is a pile column body formed by pouring quicklime blocks (or adding a proper amount of hydraulic admixture such as fly ash, volcanic ash and the like into the quicklime blocks) after holes are formed in the foundation manually or mechanically and compacting by vibration or compaction.
After the lime pile is adopted to reinforce the foundation outside the masonry hoop kiln face in the step 101, the method has the following effects: firstly, the kiln face wall 7 to be reinforced can be further reinforced, and the foundation of the kiln face wall 7 to be reinforced is reinforced under the condition that the kiln face wall 7 to be reinforced is not dismantled, so that the stability of the original foundation of the kiln face wall 7 to be reinforced is improved, and the deformation resistance of the original foundation of the kiln face wall 7 to be reinforced is further improved; secondly, the reinforced foundation has good reinforcing effect and can effectively ensure the stability of the foundation, thereby improving the problem of skew flash or inclined deformation of bricks and stone kiln faces caused by foundation settlement; thirdly, a stable foundation is provided for the reinforcing wall 9, and the overall stability and the deformation resistance of the reinforced kiln face wall are further improved; fourthly, the position, the depth, the length and the width of the reinforced foundation are respectively limited, so that the reinforced area of the foundation can be accurately limited, the operability is strong, and the reinforced area is clear.
In this embodiment, the ground is the compound ground that adopts many lime piles to consolidate after the reinforcement.
The lime piles are arranged in a quincunx shape, the distance between every two adjacent lime piles is 1.2-1.6 m, and the pile diameter of each lime pile is phi 8-phi 12 cm; the length of the lime pile is not less than 1.5 m.
In this embodiment, the distance between two adjacent lime piles is 1.5m, and the diameter of each lime pile is phi 10 cm. During actual construction, the distance between two adjacent lime piles and the pile diameter of the lime piles can be correspondingly adjusted according to specific requirements.
Adopt lime stake consolidate the back, can effectively improve the bearing capacity of ground after the reinforcement reduces and avoids the adverse effect that the ground subsides and cause even.
In this embodiment, adopt the reinforcement stake to treat the ground in the reinforcement masonry hoop kiln face outside and consolidate the back, still need treat the ground in the reinforcement masonry hoop kiln face outside and tamp, obtain the compaction coefficient and be not less than 0.97 ground after the reinforcement. Therefore, the foundation stabilization effect can be further ensured, and the adverse effect caused by foundation settlement is further reduced or even avoided.
In the step 102, the thickness of the plain concrete cushion layer 8 is 8 cm-12 cm.
During actual construction, treat to consolidate 7 bottoms of kiln face wall and laid the concrete cushion, plain concrete cushion 8 with the concrete cushion is connected as an organic whole and the top surface of the two looks parallel and level.
In this embodiment, when the plain concrete cushion layer 8 is poured, the pouring is performed from the bottom of the kiln face wall 7 to be reinforced, and the thickness of the plain concrete cushion layer 8 is 10 cm. During actual construction, the thickness of the plain concrete cushion layer 8 can be adjusted correspondingly according to specific requirements.
After the plain concrete cushion layer 8 is poured, the integrity of the foundation below the reinforced wall 9 can be effectively ensured, the lime piles and the plain concrete cushion layer 8 are fixedly connected into a whole, the connection strength of the reinforced wall 9 and the reinforced foundation can be effectively improved, the integrity of the bottom of the reinforced wall 9 can be ensured, and the deformation resistance of the bottom of the reinforced wall 9 is further improved. The plain concrete cushion layer 8 is a structure made of concrete without ribs or stress reinforcing steel bars.
In this embodiment, after the reinforcing wall is built in step 103, the kiln face wall 7 to be reinforced and the reinforcing wall 9 outside the kiln face wall form a reinforced rear kiln face wall.
In this embodiment, after the reinforcing wall is built in step 103, a plurality of horizontal tie bars need to be arranged between the top of the reinforcing wall 9 and the top of the kiln face wall 7 to be reinforced, the plurality of horizontal tie bars are all arranged horizontally and are all arranged along the thickness direction of the kiln face wall 7 to be reinforced, and the plurality of horizontal tie bars are all arranged on the same horizontal plane; the top of the reinforcing wall 9 and the top of the kiln face wall 7 to be reinforced are connected into a whole through a plurality of horizontal tie bars in a fastening manner.
The plurality of horizontal tie bars are uniformly distributed, and the distance between every two adjacent horizontal tie bars is 40-60 cm.
In this embodiment, the distance between two adjacent horizontal tie bars is 50 cm.
During actual construction, the distance between two adjacent horizontal tie bars can be correspondingly adjusted according to specific requirements.
In the embodiment in the present market, in step 103, the reinforcing wall 9 and the kiln face wall 7 to be reinforced are both built by building blocks, and the building blocks used for the reinforcing wall 9 and the kiln face wall 7 to be reinforced are both bricks or stones;
the joint between the reinforcing wall 9 and the kiln face wall 7 to be reinforced is constructed by skin-biting combats through building blocks. Therefore, the connection strength between the reinforcing wall 9 and the kiln face wall 7 to be reinforced and the integrity of the formed reinforced rear kiln face wall can be effectively ensured, and the deformation resistance of the reinforced rear kiln face wall is further improved.
In this embodiment, as shown in fig. 5, the reinforcing wall 9 and the kiln face wall 7 to be reinforced are made of bricks.
The cubic hoop kiln 6 is a brick hoop kiln.
The reinforcing wall 9 is of a wall structure with a thick bottom and a relatively thin top, so that on one hand, the wall of the kiln face wall 7 to be reinforced can be effectively reinforced, and can be fixedly connected with the wall of the reinforcing kiln face wall 1 into a whole; on the other hand, the wall body of the reinforcing wall 9 has high stability and is connected with the kiln face wall 7 to be reinforced into a whole and stressed integrally; meanwhile, the top of the reinforcing wall 9 is relatively thin, so that the reinforcing wall is conveniently, simply, quickly and tightly connected with the kiln face wall 7 to be reinforced, and meanwhile, after the deformation of the thin upper area is transited from top to bottom to the thick bottom area, the deformation degree of the wall body can be effectively reduced, and the deformation resistance is further improved.
In the embodiment, when the shear key construction is carried out in the third step, a vertical tie bar 10 is inserted into each vertical hole at the bottom of the kiln face wall after reinforcement, the lower part of each vertical tie bar 10 is inserted into each vertical hole, and the upper part of each vertical tie bar 10 is poured into the enclosure reinforcing beam at the top of the kiln;
all vertical holes formed in the reinforced kiln face wall are distributed in multiple rows and multiple columns, concrete is poured into each vertical hole, and vertical shear keys are formed by the concrete and the vertical tie bars 10 inserted into the vertical holes; the kiln top enclosure reinforcing beam is fixedly connected with the reinforced rear kiln face wall through a plurality of vertical shear keys.
Consolidate the multirow of seting up on the back kiln face wall cube hole is laid from left to right along the thickness direction of treating to consolidate kiln face wall 7, adjacent two rows interval between the cube hole is 8cm ~ 12cm, every row the cube hole all includes that a plurality of edges are laid by preceding to back along the length direction of treating to consolidate kiln face wall 7 the cube hole is every row adjacent two around in the cube hole interval between the cube hole is 40cm ~ 60 cm. In this embodiment, the distance between two adjacent rows of the cube holes is 10cm, and the distance between two adjacent front and back cube holes in each row of the cube holes is 50 cm. During actual construction, the distance between two adjacent rows of cube holes and the distance between two adjacent front and back cube holes in each row of cube holes can be correspondingly adjusted according to specific requirements.
Above-mentioned vertical shear key has good shear effect, can effectively improve consolidate back kiln face wall and flat crown beam between be connected reliability and joint strength, make it can be as an organic whole with flat crown beam fastening connection to consolidate back kiln face wall, common atress.
During actual construction, the kiln top enclosure reinforcing beam is synchronously integrally cast.
Because the exposed door face of the cave opening of the hoop kiln is the kiln face, the front side of the masonry hoop kiln 1 to be reinforced is the kiln face. In actual use, the front side and the rear side of the masonry hoop kiln 1 to be reinforced can be both kiln faces. Thus, the kiln face wall 7 to be reinforced is a wall supported on the ground in the front side wall 5 or the rear side wall 13.
In this embodiment, the kiln front wall 7 to be reinforced is a part of the front wall 5 supported on the ground. The front side wall body 5 is divided into two wall bodies of a kiln face wall 7 to be reinforced and a non-reinforced wall body, and the wall bodies except the kiln face wall 7 to be reinforced in the front side wall body 5 are the non-reinforced wall body.
In this example, the remaining process steps were the same as in example 1.
Example 3
As shown in fig. 6, in the present embodiment, unlike embodiment 2, there are: the building blocks adopted by the reinforcing wall 9 and the kiln face wall 7 to be reinforced are stones;
the masonry hoop kiln 1 to be reinforced is a masonry hoop kiln.
In this example, the remaining steps and structure were the same as in example 2.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. A masonry hoop kiln reinforcing method for improving overall stability of a cave dwelling by adopting a carbon fiber net is characterized by comprising the following steps:
step one, treating a kiln top covering soil layer: leveling and tamping a soil covering layer on the upper part of the masonry hoop kiln (1) to be reinforced to ensure that the compaction coefficient of the soil covering layer is not less than 0.94; then, a layer of lime soil layer (11) is paved on the tamped covering soil layer, and the lime soil layer (11) is tamped, so that the compaction coefficient of the lime soil layer (11) is not less than 0.97;
step two, dismantling the enclosing wall of the kiln top: respectively removing the enclosing walls which are arranged at the upper parts of the peripheral wall bodies of the masonry hoop kiln (1) to be reinforced and above the soil covering layer in the step one until the upper wall surface is lower than the upper surface of the lime soil layer (11) in the step one;
step three, shear key construction: constructing a plurality of shear keys on the upper parts of the peripheral wall bodies of the masonry hoop kiln (1) to be reinforced;
step four, constructing a carbon fiber net reinforced structure: constructing a carbon fiber mesh reinforced structure of the masonry hoop kiln (1) to be reinforced;
the carbon fiber net reinforcing structure comprises a kiln top enclosure beam (2) supported on walls around a masonry hoop kiln (1) to be reinforced and a carbon fiber net (3) arranged on the inner side of the kiln top enclosure beam (2), wherein the carbon fiber net (3) is a rectangular carbon fiber net piece which is positioned above a gray soil layer (11) in the step one and is horizontally arranged, the kiln top enclosure beam (2) is a cast-in-place reinforced concrete ring beam, and the periphery of the carbon fiber net (3) is poured in the kiln top enclosure beam (2);
the kiln top enclosure beam (2) is horizontally arranged, and the kiln top enclosure beam (2) and the peripheral wall body of the masonry hoop kiln (1) to be reinforced are fixedly connected into a whole through a plurality of shear keys;
step five, constructing the front wall and paving the covering soil layer: the method comprises the steps of building a front enclosing wall (4) on a kiln top enclosing beam (2) on the front side of a masonry hoop kiln (1) to be reinforced, covering a layer of earthing soil on a gray soil layer (11) in the step one, tamping the earthing soil to obtain an upper soil covering layer (12) with a compaction coefficient not less than 0.97, and embedding a carbon fiber net (3) in the upper soil covering layer (12).
2. The masonry hoop kiln strengthening method adopting the carbon fiber mesh to improve the overall stability of the cave according to claim 1, characterized in that: when a grey soil layer (11) is paved on the tamped covering soil layer in the step one, firstly, a layer of pseudo-ginseng grey soil with the thickness of 30cm is paved on the tamped covering soil layer, and then, the paved pseudo-ginseng grey soil is tamped to obtain the grey soil layer (11) with the compaction coefficient not less than 0.97.
3. The masonry hoop kiln strengthening method using the carbon fiber mesh for improving the overall stability of the cave according to claim 1 or 2, characterized in that: in the step one, the masonry hoop kiln (1) to be reinforced is a cubic hoop kiln, the peripheral wall body of the masonry hoop kiln (1) to be reinforced is vertically arranged and comprises a front side wall body (5) located at the front side of the masonry hoop kiln (1) to be reinforced, a rear side wall body (13) located right behind the front side wall body (5) and connected with the front side wall body (5) in parallel arrangement, a left side wall body and a right side wall body (6) respectively connected between the front side wall body (5) and the left side and the right side of the rear side wall body (13), the left side wall body and the right side wall body (6) are arranged in parallel and are vertically arranged with the front side wall body (5).
4. The masonry hoop kiln strengthening method adopting the carbon fiber mesh to improve the overall stability of the cave according to claim 3, characterized in that: when the kiln top enclosing walls are dismantled in the second step, respectively dismantling all the enclosing walls from top to bottom;
in the second step, the enclosing wall is a wall which is positioned at the upper parts of the front side wall body (5), the rear side wall body (13), the left side wall body or the right side wall body (6) and is positioned above the covering soil layer in the first step;
when the kiln top enclosing walls are dismantled in the second step, each enclosing wall is dismantled until the upper wall surface is 6 cm-12 cm lower than the upper surface of the lime soil layer (11);
in the fourth step, the vertical distance between the bottom of the carbon fiber net (3) and the bottom surface of the kiln top enclosure beam (2) is 8-12 cm.
5. The masonry hoop kiln strengthening method adopting the carbon fiber mesh to improve the overall stability of the cave according to claim 3, characterized in that: in the fourth step, the kiln top surrounding beam (2) is a rectangular frame beam formed by connecting four peripheral pressing beams;
the front side wall body (5), the rear side wall body (13), the left side wall body and the right side wall body (6) are side walls of the masonry hoop kiln (1) to be reinforced, and the peripheral compression beams are cast-in-place reinforced concrete beams which are horizontally arranged; each peripheral pressure beam is supported right above one side wall, each peripheral pressure beam is arranged in parallel with the side wall supported by the peripheral pressure beam, and each peripheral pressure beam is fixedly connected with the side wall supported by the peripheral pressure beam through a plurality of shear keys;
in the fourth step, four side edges of the carbon fiber net (3) respectively extend into one of the peripheral pressing beams, all four side edges of the carbon fiber net (3) are anchoring edges anchored in the peripheral pressing beams, and the width of each anchoring edge is 8-12 cm.
6. The masonry hoop kiln strengthening method adopting the carbon fiber mesh to improve the overall stability of the cave according to claim 5, characterized in that: when the shear key construction is carried out in the third step, a plurality of vertical holes are respectively formed on four side walls of the masonry hoop kiln (1) to be reinforced; the vertical holes in each side wall are distributed from front to back along the central axis of the side wall;
when the carbon fiber net reinforced structure is constructed in the fourth step, concrete is poured into each vertical hole to form a vertical shear key; and each peripheral pressure beam is fixedly connected with the side wall supported by the peripheral pressure beam through a plurality of vertical shear keys.
7. The masonry hoop kiln strengthening method adopting the carbon fiber mesh to improve the overall stability of the cave according to claim 6, characterized in that: the vertical holes are cubic holes, the depth of each cubic hole is 8-12 cm, the cross section of each cubic hole is square, and the side length of each cubic hole is 7-9 cm; the distance between two adjacent vertical holes is 50-60 cm.
8. The masonry hoop kiln strengthening method adopting the carbon fiber mesh to improve the overall stability of the cave according to claim 5, characterized in that: the lower part of the inner side of each peripheral pressing beam is provided with a plurality of beam body longitudinal steel bars which are distributed on the same horizontal plane; longitudinal steel bars of each beam body are distributed along the longitudinal length direction of the distributed peripheral pressure beams;
in the fourth step, the kiln top surrounding beam (2) comprises a lower beam body positioned below the carbon fiber net (3) and an upper beam body positioned above the lower beam body, the upper beam body and the lower beam body are cast into a whole, and the upper beam body and the lower beam body are both cast by impervious concrete;
when the carbon fiber net reinforcing structure of the masonry hoop kiln (1) to be reinforced is constructed in the fourth step, the lower beam body of the kiln top enclosing beam (2) is poured firstly, then the carbon fiber net (3) is placed, and the upper beam body is poured after the carbon fiber net (3) is placed.
9. The masonry hoop kiln strengthening method using the carbon fiber mesh for improving the overall stability of the cave according to claim 1 or 2, characterized in that: and step five, the kiln top surrounding beam (2) at the front side of the masonry hoop kiln (1) to be reinforced is fixedly connected with the front wall (4) through a plurality of tie bars arranged from left to right, the plurality of tie bars are arranged on the same vertical surface from left to right, and the bottoms of the tie bars are embedded in the kiln top surrounding beam (2) at the front side of the masonry hoop kiln (1) to be reinforced.
10. The masonry hoop kiln strengthening method using the carbon fiber mesh for improving the overall stability of the cave according to claim 1 or 2, characterized in that: before the shear key construction is carried out in the third step, the masonry hoop kiln (1) to be reinforced is required to be reinforced by a kiln face, and the process is as follows:
step 101, reinforcing the foundation outside the kiln face: reinforcing the foundation outside the kiln face of the masonry hoop kiln (1) to be reinforced to obtain a reinforced foundation;
the reinforced foundation is positioned on the outer side of a kiln face wall (7) to be reinforced, and the kiln face wall (7) to be reinforced is a wall body which is positioned on one side of a kiln face in the masonry hoop kiln (1) to be reinforced and the bottom of which is supported on the ground; the reinforced foundation is rectangular and is abutted against the foundation of the kiln face wall (7) to be reinforced, the length of the reinforced foundation is the same as that of the kiln face wall (7) to be reinforced, and the width of the reinforced foundation is 1-2 m;
102, pouring a plain concrete cushion layer: pouring a plain concrete cushion layer (8) on the foundation after the reinforcement in the step 101;
the plain concrete cushion layer (8) is rectangular and is positioned on the outer side of the kiln face wall (7) to be reinforced, the inner side wall of the plain concrete cushion layer (8) is abutted against the outer side wall of the bottom of the kiln face wall (7) to be reinforced, the length of the plain concrete cushion layer (8) is the same as that of the kiln face wall (7) to be reinforced, the plain concrete cushion layer (8) and the kiln face wall (7) to be reinforced are arranged in parallel, and the front end face of the plain concrete cushion layer (8) is flush with the front end face of the kiln face wall (7) to be reinforced;
step 103, building of a reinforced wall: building a reinforced wall (9) on the plain concrete cushion (8) from bottom to top in step 102;
the reinforcing wall (9) is positioned on the outer side of the kiln face wall (7) to be reinforced, the inner side wall of the reinforcing wall is abutted against the outer side wall of the kiln face wall (7) to be reinforced, the vertical section of the reinforcing wall (9) is in a right trapezoid shape, and the thickness of the reinforcing wall is gradually reduced from bottom to top; the bottom and the top of the reinforcing wall (9) are rectangular, the length of the reinforcing wall (9) is the same as that of the kiln face wall (7) to be reinforced, the height of the reinforcing wall and the kiln face wall is the same, the top surface of the reinforcing wall (9) is flush with that of the kiln face wall (7) to be reinforced, and the reinforcing wall and the kiln face wall form a reinforced rear kiln face wall;
the bottom thickness D1 of the reinforcing wall (9) is not less than 50cm, the top thickness D2 of the reinforcing wall is not less than 30cm, and the included angle between the outer side wall of the reinforcing wall (9) and the horizontal plane is not more than 80 degrees; the width of the plain concrete cushion layer (8) in the step 102 is not less than the bottom thickness D1 of the reinforced wall (9);
step 104, shear key construction: constructing a plurality of shear keys on the upper part of the reinforced wall (9) in step 103;
the carbon fiber net reinforced structure in the fourth step further comprises a reinforcing beam supported on the reinforcing wall (9) in the step 103, wherein the reinforcing beam is a cast-in-place reinforced concrete beam which is horizontally arranged and is integrally cast with the kiln top surrounding beam (2); the reinforcing beam and the reinforcing wall (9) are fixedly connected into a whole through a plurality of shear keys.
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| CN201811232736.6A CN109403653B (en) | 2018-10-23 | 2018-10-23 | Masonry hooping kiln reinforcing method for improving overall stability of cave dwelling by adopting carbon fiber net |
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| CN205153572U (en) * | 2015-12-02 | 2016-04-13 | 西安建筑科技大学 | Device of anti ability of collapsing of reinforcing cave dwelling |
| CN205776349U (en) * | 2016-06-24 | 2016-12-07 | 长安大学 | A kind of stand alone type brick setting antidetonation cave dwelling |
| CN106223636A (en) * | 2016-08-05 | 2016-12-14 | 陕西省建筑科学研究院 | A kind of Analysis of Loess Cave Dwellings bracing means |
| CN106013229B (en) * | 2016-06-24 | 2018-06-01 | 长安大学 | A kind of method of construction of stand alone type brick setting antidetonation cave dwelling |
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2018
- 2018-10-23 CN CN201811232736.6A patent/CN109403653B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6499268B2 (en) * | 2000-04-28 | 2002-12-31 | Peter James | Reinforcing structures |
| CN205153572U (en) * | 2015-12-02 | 2016-04-13 | 西安建筑科技大学 | Device of anti ability of collapsing of reinforcing cave dwelling |
| CN205776349U (en) * | 2016-06-24 | 2016-12-07 | 长安大学 | A kind of stand alone type brick setting antidetonation cave dwelling |
| CN106013229B (en) * | 2016-06-24 | 2018-06-01 | 长安大学 | A kind of method of construction of stand alone type brick setting antidetonation cave dwelling |
| CN106223636A (en) * | 2016-08-05 | 2016-12-14 | 陕西省建筑科学研究院 | A kind of Analysis of Loess Cave Dwellings bracing means |
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