CN114352058A - Building structure reinforced cement rope and reinforcing construction method thereof - Google Patents
Building structure reinforced cement rope and reinforcing construction method thereof Download PDFInfo
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- CN114352058A CN114352058A CN202111680853.0A CN202111680853A CN114352058A CN 114352058 A CN114352058 A CN 114352058A CN 202111680853 A CN202111680853 A CN 202111680853A CN 114352058 A CN114352058 A CN 114352058A
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Abstract
The invention discloses a building structure reinforced cement rope and a reinforcing construction method thereof, wherein the cement rope is formed by a hollow rope body with the inner diameter of 2-5cm and expanded cement powder filled in the hollow rope body through water soaking, expansion and airing, the hollow rope body is formed by an inner sleeve layer and a rope skin layer coated outside the inner sleeve layer, the rope skin layer is formed by weaving carbon fibers and is coated outside the inner sleeve layer, the included angle of the weaving direction of the carbon fibers is 40-90 degrees, and the rope skin layer is formed by mutually interweaving and weaving a first oblique carbon fiber bundle and a second oblique carbon fiber bundle which are the same in thickness. The water rope cortex, the inner sleeve layer and the expansive cement powder are wetted by water spray, expanded and dried, the expansive cement powder is extruded to generate hoop pressure, the reinforcing effect is achieved on the damaged concrete bearing column, the column has good tensile, shearing, shock-resistant and compression-resistant effects, the operation is convenient, the use cost is low, the large-scale popularization is suitable, and the safety of damaged cement components is improved.
Description
Technical Field
The invention relates to the technical field of building reinforcement construction, in particular to a building structure reinforced cement rope and a reinforcement construction method thereof.
Background
The reinforced concrete bearing column is used as a basic civil engineering bearing component in the building field of houses, bridges and the like, and diseases such as concrete carbonization, steel bar corrosion and the like are often caused due to defects of design or construction, damage of natural disasters, gradual degradation of structural functions after long-term use and the like, so that the conditions of insufficient strength, rigidity or durability are caused, the bearing capacity is reduced, the anti-seismic performance is degraded, and the current use or reconstruction and extension requirements are difficult to meet. Therefore, there is a need for reinforcing and maintaining a reinforced concrete beam and column structure to prolong the life span of the structure and to ensure the safety of the structure. The existing construction method for reinforcing the concrete structure comprises the traditional methods such as a section-enlarging reinforcing method, a steel reinforcing method, a bonded steel reinforcing method, a carbon fiber reinforcing method and the like, complex procedures and auxiliary facilities such as bar-planting anchoring, clamp assembly and disassembly, formwork erection, support, concrete pouring, maintenance, formwork removal and the like are required in construction, and the construction procedures are relatively complex, long in period, high in cost and large in occupied space. The carbon fiber sheet is a building material for reinforcing a building structure, is widely applied to practical engineering, wherein the mechanism of a carbon fiber reinforcing method is to improve the compression performance of concrete by effectively restraining the lateral expansion deformation of the concrete, and compared with the traditional section-enlarging method or a steel-bonded concrete reinforcing method, the carbon fiber sheet has the characteristics of space saving, simplicity and convenience in construction, no need of on-site fixed facilities, easiness in ensuring the construction quality, basically no increase of the structure size and dead weight, good corrosion resistance, good durability and the like; the carbon fiber reinforcement construction is to pre-soak carbon fibers with extremely high tensile strength into a composite reinforced material by using epoxy resin; the epoxy resin adhesive is adhered to the structure to be reinforced along the tensile direction or the direction perpendicular to the crack direction to form a new composite, so that the reinforcing adhesive material and the original reinforced concrete are stressed together to increase the crack resistance or shearing resistance of the structure and improve the strength, rigidity, crack resistance and extensibility of the structure. The main defects are that the surface required by carbon fiber pasting is flat, the pressure resistance is small, for example, the improvement on the performance of a component in the normal use stage is very limited, the high strength performance of a carbon fiber material cannot be fully utilized, a large amount of waste is caused, the carbon fiber pasting is not suitable for reinforcing a pressed area, and the carbon fiber pasting is easy to lose efficacy if the carbon fiber pasting is improper.
Disclosure of Invention
The invention aims to provide a building structure reinforced cement rope and a reinforcing construction method thereof. In order to achieve the above object, the present invention adopts the following technical effects:
according to one aspect of the invention, the cement rope for reinforcing the building structure is provided, the cement rope is formed by a hollow rope body with the inner diameter of 2-5cm and expanded cement powder filled in the hollow rope body through water soaking, expansion and airing, the hollow rope body 1 is composed of an inner sleeve layer and a rope skin layer coated outside the inner sleeve layer, the rope skin layer is formed by weaving carbon fibers and coated outside the inner layer, and the weaving direction included angle of the carbon fibers is 40-90 degrees.
In a further preferable mode of the above scheme, the cord skin layer is formed by interweaving and weaving a first oblique carbon fiber bundle and a second oblique carbon fiber bundle which are the same in thickness, and an included angle between weaving directions of the first oblique carbon fiber bundle and the second oblique carbon fiber bundle is 45-65 °.
According to the scheme, the preferable part is that a bundle of traction wires along the axial direction of the hollow rope body 1 penetrates through the surrounding, overlapping and weaving part of the first oblique carbon fiber bundle and the second oblique carbon fiber bundle, and the area of a pore formed between the first oblique carbon fiber bundle and the second oblique carbon fiber bundle is 0.8-3 mm2。
In a further preferable mode of the foregoing scheme, warp-wise carbon fiber bundles are further interwoven and woven along peripheries of the first oblique carbon fiber bundle and the second oblique carbon fiber bundle, and diameters of the traction wire and the warp-wise carbon fiber bundles are the same and larger than a diameter of the first oblique carbon fiber bundle.
In a further preferable mode of the above scheme, the expansive cement powder is prepared by mixing 75% -85% of portland cement clinker, 10% -16% of magnesium oxide powder, 2% -8% of gypsum powder and 1% -3% of graphene, and the particle size of the magnesium oxide and the gypsum powder is 0.1-5 um.
Above-mentioned scheme is further preferred hollow rope body 1's one end or both ends are provided with the flange disk body that can dismantle the connection, the inlayer is the non-woven fabrics, the carbon fiber is woven and is hugged closely the outside of cladding in the non-woven fabrics.
According to another aspect of the present invention, the present invention provides a reinforcement construction method for reinforcing a cement rope for a building structure, comprising the steps of:
polishing and flattening the surface of the concrete bearing column to be reinforced, polishing surrounding grooves on the outer wall of the bearing column at intervals from top to bottom, cleaning the concrete bearing column surface by using water, cleaning the concrete bearing column surface by using acetone, and drying the concrete bearing column surface by airing;
drilling a hole with the depth of 0.5-2cm downwards inclined on the outer edge among the plurality of grooves, filling slurry made of viscous expansion cement powder 2 into the hole, enabling the filled slurry to protrude out of the hole after being dried, and standing for curing for 10-20min to form a protruding supporting point;
selecting the length of a hollow rope body 1 according to the height of the outer wall of the bearing column wound in advance, inserting a flange disc body 3 into one end of the hollow rope body 1, injecting expansion cement powder 2 into the hollow rope body 1 through the flange disc body 3, plugging pipe orifices at two ends of the hollow rope body 1, removing the flange disc body 3, knotting one end of a rope skin layer 11 filled with the expansion cement powder 2 and binding the one end of the rope skin layer at the top end of the concrete bearing column, downwards winding the rope skin layer 11 from the top end of the concrete bearing column, winding the rope skin layer 11 in a groove in the downwards winding process, keeping mutual contact and limiting, supporting the rope skin layer 11 on a protruding supporting point until the rope skin layer is wound to the bottom end of the concrete bearing column, and binding the other end of the rope skin layer 11 at the bottom end of the bearing column;
spray the rope cortex 11 of winding on bearing the post with water, make water rope cortex 11, endotheca layer 10 and expansion cement powder 2, it is moist until expansion cement powder 2 is sprayed by water completely, the moist back of expansion cement powder meet water, the rope cortex 11 that makes the carbon fiber make receives the expansion extrusion of expansion cement powder 2 and produces the hoop pressure, treat moist expansion cement powder 2 and dry and form the cement rope, the cement rope of formation produces the hoop pressure, bear the post to impaired concrete and play the reinforcement effect.
Preferably, the expanded cement powder is completely wetted by water spray, and then the wetted surface of the cord skin layer is beaten or the roller is adopted to roll the surface of the cord skin layer; and (3) sticking the cement slurry discharged by beating or rolling in a gap between adjacent rope bodies after winding, then respectively spraying the cement slurry prepared by expanded cement powder on the upper end and the lower end of the rope sheath layer to enable the upper end and the lower end of the rope sheath layer to be stuck on the concrete bearing column, curing for 10-24 hours after the cement rope is dried and solidified, and spraying epoxy glue on the surface of the cement rope after curing for 10-24 hours.
In a further preferred embodiment of the above solution, the depth and width of the grooves do not exceed 2mm, and the distance between adjacent grooves does not exceed 5 cm.
In summary, the invention adopts the above technical scheme, and the invention has the following technical effects: according to the invention, carbon fibers are woven into the hollow rope body 1 (hollow sleeve) with the diameter of about 3cm, the woven hollow rope body (pipe wall) is required to have water permeability, expansion cement is filled in the hollow rope body, all the components of a building (concrete column) to be reinforced are wound and knotted by adopting the carbon fiber cement rope, the rope is sprayed with water to be wetted, the expansion cement expands and hydrates when meeting water to generate expansion force, so that the carbon fibers are expanded and extruded to generate tensile force, and further, the building to be reinforced forms annular pressure to play a reinforcing role, the carbon fiber cement rope has self-adhesion, is suitable for reinforcing the buildings in compression areas and tension areas, and is simple and convenient to construct.
Drawings
FIG. 1 is a schematic structural view of a structural reinforcing cement rope for a building according to the present invention;
FIG. 2 is a schematic view of the weave structure of the hollow rope body of the present invention;
in the drawing, a hollow rope body 1, expanded cement powder 2, an inner sleeve layer 10, a rope skin layer 11, a first oblique carbon fiber bundle 100, a second oblique carbon fiber bundle 101, a traction wire 102 and a warp-wise carbon fiber bundle 103.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
With reference to fig. 1 and 2, the building structure reinforced cement rope according to the invention is formed by a hollow rope body 1 with an inner diameter of 2-5cm and expanded cement powder 2 filled in the hollow rope body 1 through water soaking, expansion and airing, a flange disc body 3 detachably connected with one end or two ends of the hollow rope body 1 is arranged, the inner layer 10 is non-woven fabric or abrasive cloth, and the carbon fiber is woven to be tightly attached to and coated on the outer part of the non-woven fabric. The hollow rope body 1 comprises an inner sleeve layer 10 and a rope skin layer 11 coated outside the inner sleeve layer 10, wherein the rope skin layer 11 is formed by weaving carbon fibers and coated outside the inner layer 10, and the included angle of the weaving direction of the carbon fibers is 40-90 degrees; the rope skin layer 11 is formed by mutually interweaving and weaving a first oblique carbon fiber bundle 100 and a second oblique carbon fiber bundle 101 which are the same in thickness, and the carbon fibers used in each bundle are T300, T700, T800, T1000 or T1200 series carbon fibers; a traction wire 102 along the axial direction of the hollow rope body 1 is arranged at the surrounding and overlapping weaving position of the first oblique carbon fiber bundle 100 and the second oblique carbon fiber bundle 101 in a penetrating way, so that the tension of the hollow rope body 1 is enhanced, a warp-wise carbon fiber bundle 103 is also interwoven and woven on the periphery of the first oblique carbon fiber bundle 100 and the second oblique carbon fiber bundle 101, the diameter of the traction wire 102 and the diameter of the warp-wise carbon fiber bundle 103 are the same and are larger than that of the first oblique carbon fiber bundle 100, a rope sheath layer 11 woven by carbon fibers is adopted to coat the outside of a cloth sheath tube body made of non-woven fabrics, then expansion cement powder 2 is filled in the cloth sheath tube body made of non-woven fabrics, the expansion cement powder is prevented from leaking out of the rope sheath layer 11 woven by the carbon fibers, and water is easier to permeate into the expansion cement powder 2 through the non-woven fabrics, so that the expansion cement powder is expanded when encountering water, rope cortex 11 woven by the rope cortex 11 that forms by carbon fiber interweaves has higher tensile strength and fatigue strength, and rope cortex 11 winding produces hoop pressure on concrete bearing column to make concrete bearing column can form fine tensile, shear, antidetonation and resistance to compression effect, convenient operation, use cost is low, is fit for promoting on a large scale.
Example one
The inner diameter of the hollow rope body 1 is 2cm, and the included angle between the weaving directions of the first oblique carbon fiber bundle 100 and the second oblique carbon fiber bundle 101 is 45 degrees; the area of a pore formed between the first oblique carbon fiber bundle 100 and the second oblique carbon fiber bundle 101 is 0.8mm2. The expanded cement powder 2 is prepared by mixing 85% of portland cement clinker, 10% of magnesium oxide powder, 2% of gypsum powder and 3% of graphene powder, wherein the particle size of the magnesium oxide and the gypsum powder is 0.1um, the portland cement clinker, the magnesium oxide powder, the gypsum powder and the graphene powder are centrifugally stirred and mixed under the condition of 4000-8000rpm, and then the mixed expanded cement is sent into the hollow rope body 1 through the flange plate body 3.
The embodiment also provides a reinforcing construction method of the building structure reinforcing cement rope, which comprises the following steps: polishing and flattening the surface of a concrete bearing column to be reinforced, polishing surrounding grooves on the outer wall of the bearing column at intervals from top to bottom, wherein the depth and the width of each groove are 2mm, the interval distance between every two adjacent grooves is 3cm, cleaning the surface of the concrete bearing column by using water, cleaning the surface of the concrete bearing column by using acetone, and drying the concrete bearing column by airing; drilling a hole with the depth of 0.5cm, which is inclined downwards, on the outer edge between every two (3) grooves, and filling viscous expansion cement slurry into the hole, so that the filled expansion cement slurry can protrude out of the hole after being dried, and forming a protruding supporting point after standing and maintaining for 10 min;
the length of the hollow rope body 1 is selected according to the height of the pre-winding and encircling outer wall of the bearing column, then the flange disc body 3 is inserted into one end of the hollow rope body 1, the inserting part of the flange disc body 3 and the inner wall of the end part of the hollow rope body 1 are fixed through a hoop, injecting expansion cement powder 2 into the hollow rope body 1 through the flange plate body 3, binding and plugging pipe orifices at two ends of the hollow rope body 1, the flange plate body 3 is removed, one end of the rope leather layer 11 filled with the expansion cement powder is knotted and is bound at the top end of the soil bearing column, then the rope sheath layer 11 is wound downwards from the top end of the concrete bearing column, the rope sheath layer 11 is wound in the groove and kept in contact with each other for limiting in the downward winding process, supporting the rope sheath layer 11 on the protruding supporting point until the rope sheath layer is wound to the bottom end of the concrete bearing column, and binding the other end of the rope sheath layer 11 at the bottom end of the bearing column;
then, a rope skin layer 11 wound on the bearing column is sprayed with water, so that the water is sequentially soaked into the rope skin layer 11, an inner sleeve layer 10 and the expanded cement powder 2 until the expanded cement powder 2 is completely wetted by the water, the expanded cement powder 2 expands after being wetted by the water, the rope skin layer 11 made of carbon fibers is expanded and extruded by the expanded cement powder 2, the wet expanded cement powder 2 is dried to form a cement rope, and the formed cement rope generates hoop pressure and plays a role in reinforcing the damaged concrete bearing column; after the expansion cement powder 2 is completely sprayed and soaked, knocking the surface of the wet rope skin layer 11 or rolling the surface of the cement rope by adopting a roller; expanded cement slurry discharged by beating or rolling is adhered in gaps between adjacent rope skin layers 11 after winding, then cement slurry made of expanded cement powder 2 is respectively sprayed at the upper end and the lower end of each rope skin layer 11, the upper end and the lower end of each rope skin layer are adhered on a concrete bearing column, after the expanded cement is dried and solidified, the cement rope is formed after maintenance for 10 hours, epoxy glue is sprayed on the surface of the cement rope, the outer part of each rope skin layer 11 has better sealing and waterproof performance, the rope skin layers 11 are prevented from being damaged, portland cement clinker in the expanded cement powder 2 is mixed with magnesium oxide powder, gypsum powder and graphene powder, the cement rope formed after being expanded and dried after being wetted with water has obvious effects on overall strength, crack resistance, frost resistance, seepage resistance, corrosion resistance and thermal performance, the specification is met, the water absorption rate of the surface of the expanded cement powder 2 after being solidified is not more than 5 percent, the integral waterproof performance is good, the corrosion resistance is improved, the deformation of the waterproof material after being heated or impacted is smaller, and the thermal performance and the strength are improved. The service life of the rope sheath layer 11 is prolonged. The utility model discloses a concrete bearing column, including the concrete bearing column, the reinforcing cement rope that forms after the inflation cement inflation condenses produces the hoop pressure to the concrete bearing column (concrete component), bear the post to impaired concrete and play the reinforcement effect, therefore, not only bear post (concrete component) to the concrete and play the reinforcement effect, and bear the outside of post (concrete component) and also form the tube-shape support cylinder who plays the supporting role by between top to the bottom at the concrete, thereby play the stable supporting role to the support building of impaired concrete bearing column, rope cortex 11 winding produces the hoop pressure on the concrete bearing column, thereby make the concrete bearing column can form fine tensile, resist shear, antidetonation and compressive effect, make the concrete bearing column can be more firm, prolonged its life.
Example two
In the embodiment of the present invention, an included angle between weaving directions of the first oblique carbon fiber bundle 100 and the second oblique carbon fiber bundle 101 is 65 °; the area of a pore formed between the first oblique carbon fiber bundle and the second oblique carbon fiber bundle is 3mm2The expanded cement powder 2 is prepared by mixing 75% of portland cement clinker, 16% of magnesium oxide powder, 8% of gypsum powder and 1% of graphene,
the embodiment also provides a reinforcing construction method of the building structure reinforcing cement rope, which comprises the following steps: polishing and flattening the surface of a concrete bearing column to be reinforced, polishing surrounding grooves on the outer wall of the bearing column at intervals from top to bottom, wherein the depth and the width of each groove are not more than 2mm, the interval distance between every two adjacent grooves is 4cm, cleaning the surface of the concrete bearing column by using water, cleaning the surface of the concrete bearing column by using acetone, and drying the concrete bearing column by airing; drilling 2cm holes inclined downwards on the outer edges among the 4 grooves at intervals, and filling viscous expansion cement slurry into the holes, so that the filled expansion cement slurry can protrude out of the hole after being dried, and forming protruding support points after standing and maintaining for 20 min;
the length of the hollow rope body 1 is selected according to the height of the pre-winding and encircling outer wall of the bearing column, then the flange disc body 3 is inserted into one end of the hollow rope body 1, the inserting part of the flange disc body 3 and the inner wall of the end part of the hollow rope body 1 are fixed through a hoop, injecting expansion cement powder 2 into the hollow rope body 1 through the flange plate body 3, binding and plugging pipe orifices at two ends of the hollow rope body 1, the flange plate body 3 is removed, one end of the rope leather layer 11 filled with the expansion cement powder is knotted and is bound at the top end of the soil bearing column, then the rope sheath layer 11 is wound downwards from the top end of the concrete bearing column, the rope sheath layer 11 is wound in the groove and kept in contact with each other for limiting in the downward winding process, supporting the rope sheath layer 11 on the protruding supporting point until the rope sheath layer is wound to the bottom end of the concrete bearing column, and binding the other end of the rope sheath layer 11 at the bottom end of the bearing column;
then, a rope skin layer 11 wound on the bearing column is sprayed with water, so that the water is sequentially soaked into the rope skin layer 11, an inner sleeve layer 10 and the expanded cement powder 2 until the expanded cement powder 2 is completely wetted by the water, the expanded cement powder 2 expands after being wetted by the water, the rope skin layer 11 made of carbon fibers is expanded and extruded by the expanded cement powder 2, the wet expanded cement powder 2 is dried to form a cement rope, and the formed cement rope generates hoop pressure and plays a role in reinforcing the damaged concrete bearing column; after the expansion cement powder 2 is completely sprayed and soaked, knocking the surface of the wet rope skin layer 11 or rolling the surface of the cement rope by adopting a roller; and the expanded cement slurry discharged by beating or rolling is adhered in a gap between the adjacent rope skin layers 11 after winding, then the cement slurry prepared from the expanded cement powder 2 is respectively sprayed at the upper end and the lower end of each rope skin layer 11, so that the upper end and the lower end of each rope skin layer are adhered on the concrete bearing column, after the expanded cement is dried and solidified, the cement rope is formed after curing for 24 hours, and then the epoxy glue is sprayed on the surface of the cement rope.
EXAMPLE III
In the embodiment of the present invention, an included angle between weaving directions of the first oblique carbon fiber bundle 100 and the second oblique carbon fiber bundle 101 is 60 °; the area of a pore formed between the first oblique carbon fiber bundle 100 and the second oblique carbon fiber bundle 101 is 1-2mm2The expanded cement powder 2 is prepared by mixing 80% of portland cement clinker, 13% of magnesium oxide powder, 5% of gypsum powder and 2% of graphene, wherein the expanded cement powder is prepared by mixingThe particle size of the magnesium oxide and gypsum powder is 0.5um-1.5 um; the embodiment also provides a reinforcing construction method of the building structure reinforcing cement rope, which comprises the following steps: polishing and flattening the surface of a concrete bearing column to be reinforced, polishing surrounding grooves on the outer wall of the bearing column at intervals from top to bottom, wherein the depth and the width of each groove are not more than 2mm, the interval distance between every two adjacent grooves is not more than 5cm, cleaning the surface of the concrete bearing column by using water, cleaning the surface of the concrete bearing column by using acetone, and drying the concrete bearing column by airing; drilling holes of 1-1.5cm downward inclination on the outer edges among the 5 grooves at intervals, and filling viscous expansion cement slurry into the holes, so that the filled expansion cement slurry can protrude out of the hole after being dried, and forming protruding support points after standing for 15 min.
The length of the hollow rope body 1 is selected according to the height of the pre-winding and encircling outer wall of the bearing column, then the flange disc body 3 is inserted into one end of the hollow rope body 1, the inserting part of the flange disc body 3 and the inner wall of the end part of the hollow rope body 1 are fixed through a hoop, injecting expansion cement powder 2 into the hollow rope body 1 through the flange plate body 3, binding and plugging pipe orifices at two ends of the hollow rope body 1, the flange plate body 3 is removed, one end of the rope leather layer 11 filled with the expansion cement powder is knotted and is bound at the top end of the soil bearing column, then the rope sheath layer 11 is wound downwards from the top end of the concrete bearing column, the rope sheath layer 11 is wound in the groove and kept in contact with each other for limiting in the downward winding process, supporting the rope sheath layer 11 on the protruding supporting point until the rope sheath layer is wound to the bottom end of the concrete bearing column, and binding the other end of the rope sheath layer 11 at the bottom end of the bearing column;
then, a rope skin layer 11 wound on the bearing column is sprayed with water, so that the water is sequentially soaked into the rope skin layer 11, an inner sleeve layer 10 and the expanded cement powder 2 until the expanded cement powder 2 is completely wetted by the water, the expanded cement powder 2 expands after being wetted by the water, the rope skin layer 11 made of carbon fibers is expanded and extruded by the expanded cement powder 2, the wet expanded cement powder 2 is dried to form a cement rope, and the formed cement rope generates hoop pressure and plays a role in reinforcing the damaged concrete bearing column; after the expansion cement powder 2 is completely sprayed and soaked, knocking the surface of the wet rope skin layer 11 or rolling the surface of the cement rope by adopting a roller; and the expanded cement slurry discharged by beating or rolling is adhered in a gap between the adjacent rope skin layers 11 after winding, then the cement slurry prepared from the expanded cement powder 2 is respectively sprayed at the upper end and the lower end of each rope skin layer 11, so that the upper end and the lower end of each rope skin layer are adhered on the concrete bearing column, after the expanded cement is dried and solidified, the cement rope is formed by maintaining for 20 hours, and then the epoxy glue is sprayed on the surface of the cement rope.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (9)
1. The utility model provides a building structure consolidates cement rope which characterized in that: the cement rope is formed by a hollow rope body 1 with the inner diameter of 2-5cm and expansion cement powder filled in the hollow rope body through water soaking, expansion and airing, the hollow rope body is composed of an inner sleeve layer and a rope skin layer coated outside the inner sleeve layer, the rope skin layer is formed by weaving carbon fibers and coated outside the inner layer, and the included angle of the weaving direction of the carbon fibers is 40-90 degrees.
2. The building structure reinforcing cement rope according to claim 1, characterized in that: the rope skin layer is formed by interweaving and weaving a first oblique carbon fiber bundle and a second oblique carbon fiber bundle which are identical in thickness, and an included angle between weaving directions of the first oblique carbon fiber bundle and the second oblique carbon fiber bundle is 45-65 degrees.
3. The building structure reinforcing cement rope according to claim 2, characterized in that: a bundle of traction wires along the axis direction of the hollow rope body penetrates through the surrounding and overlapping weaving position of the first oblique carbon fiber bundle and the second oblique carbon fiber bundle, and the area of a pore formed between the first oblique carbon fiber bundle and the second oblique carbon fiber bundle is 0.8-3 mm2。
4. A building structure reinforcing cement rope according to claim 3, characterized in that: warp-wise carbon fiber bundles are also interwoven and woven on the peripheries of the first oblique carbon fiber bundle and the second oblique carbon fiber bundle, and the diameter of the traction wire is the same as that of the warp-wise carbon fiber bundles and is larger than that of the first oblique carbon fiber bundle.
5. The building structure reinforcing cement rope according to claim 1, characterized in that: the expanded cement powder is prepared by mixing 75-85% of portland cement clinker, 10-16% of magnesium oxide powder, 2-8% of gypsum powder and 1-3% of graphene, wherein the particle size of the magnesium oxide and the gypsum powder is 0.1-5 um.
6. The building structure reinforcing cement rope according to claim 1, characterized in that: the one end or both ends of the hollow rope body are provided with flange disk bodies which can be detachably connected, the inner layer is made of non-woven fabric, and the carbon fiber is woven to be tightly attached to the outer portion of the non-woven fabric in a wrapping mode.
7. A reinforcement construction method for reinforcing a cement rope for a building structure according to any one of claims 1 to 5, characterized by comprising: the method comprises the following steps:
polishing and flattening the surface of the concrete bearing column to be reinforced, polishing surrounding grooves on the outer wall of the bearing column at intervals from top to bottom, cleaning the concrete bearing column surface by using water, cleaning the concrete bearing column surface by using acetone, and drying the concrete bearing column surface by airing;
drilling a hole with the depth of 0.5-2cm downwards inclined on the outer edge among the plurality of grooves, filling slurry made of viscous expansion cement powder into the hole, enabling the filled slurry to protrude out of the hole after being dried, and standing for curing for 10-20min to form a protruding supporting point;
selecting the length of a hollow rope body according to the height of the outer wall of the bearing column wound in advance, inserting one end of the hollow rope body into a flange disc body, injecting expansion cement powder into the hollow rope body through the flange disc body, plugging pipe orifices at two ends of the hollow rope body, removing the flange disc body, knotting one end of a rope skin layer filled with the expansion cement powder and binding the rope skin layer at the top end of the concrete bearing column, downwards winding the rope skin layer from the top end of the concrete bearing column, winding the rope skin layer in a groove in the downwards winding process and keeping mutual contact and limiting, and enabling the rope skin layer to be supported on a protruding supporting point until the rope skin layer is wound to the bottom end of the concrete bearing column, and binding the other end of the rope skin layer at the bottom end of the bearing column;
the rope cortex of winding on bearing the post is sprayed with water, makes water rope cortex, endotheca layer and inflation cement powder, until inflation cement powder is wet by water spraying completely, inflation cement powder meets the moist back of water, makes the rope cortex that the carbon fiber was made receive the inflation extrusion of inflation cement powder and produce the hoop pressure, treats that moist inflation cement powder dries and forms the cement rope, and the cement rope of formation produces the hoop pressure, bears the post to impaired concrete and plays the reinforcing effect.
8. The reinforcement construction method according to claim 7, wherein: after the expanded cement powder is completely wetted by water spraying, knocking the surface of the wetted cord skin layer or rolling the surface of the cord skin layer by using a roller; and (3) sticking the cement slurry discharged by beating or rolling in a gap between adjacent rope bodies after winding, then respectively spraying cement slurry prepared by expanded cement powder on the upper end and the lower end of the rope sheath layer to enable the upper end and the lower end of the rope sheath layer to be stuck on the concrete bearing column, maintaining for 10-24 hours after the cement rope is dried and solidified, and spraying epoxy glue on the surface of the cement rope after maintaining for 10-24 hours.
9. The reinforcement construction method according to claim 7, wherein: the depth and width of the grooves do not exceed 2mm, and the distance between adjacent grooves does not exceed 5 cm.
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| CN115594449A (en) * | 2022-10-18 | 2023-01-13 | 南通大学（Cn） | Preparation method of fabric reinforced cement-based composite material for improving interface mechanical property of fiber yarns and cement matrix |
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| CN115594449A (en) * | 2022-10-18 | 2023-01-13 | 南通大学（Cn） | Preparation method of fabric reinforced cement-based composite material for improving interface mechanical property of fiber yarns and cement matrix |
| CN115594449B (en) * | 2022-10-18 | 2023-07-14 | 南通大学 | Preparation method of fabric reinforced cement-based composite material for improving mechanical properties of fiber yarn and cement matrix interface |
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| CN114352058B (en) | 2023-07-25 |
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