CN214532977U - Novel box culvert crack deformation control reinforced structure - Google Patents
Novel box culvert crack deformation control reinforced structure Download PDFInfo
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- CN214532977U CN214532977U CN202120005228.5U CN202120005228U CN214532977U CN 214532977 U CN214532977 U CN 214532977U CN 202120005228 U CN202120005228 U CN 202120005228U CN 214532977 U CN214532977 U CN 214532977U
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Abstract
The utility model discloses a novel box culvert crack deformation control reinforced structure relates to box culvert crack control and consolidates technical field, and its technical scheme main points are: the steel plate is fixed on the surface of the concrete structure through a metal expanding anchor bolt; the gap between the steel plate and the surface of the concrete structure is provided with compacted mortar body. The box culvert crack deformation control reinforcing structure is good in overall rigidity and durability, capable of effectively controlling crack deformation of concrete slabs of the box culvert and also capable of locally or integrally reinforcing diseases such as concrete deterioration, peeling and vibrating incompact, simple in process and strong in applicability.
Description
Technical Field
The utility model relates to a box culvert crack control consolidates technical field, and more specifically says, it relates to a novel box culvert crack deformation control reinforced structure.
Background
With the rapid development of the urbanization level, the available urban land resources are increasingly tense, and the reasonable development and utilization of urban underground space resources have become a necessary trend. The box culvert jacking construction method is an important construction method for urban tunnel excavation, and the box culvert is designed under the condition that insufficient bearing capacity is easily caused or concrete strength grade is reduced due to the deterioration of box culvert concrete and other reasons, particularly the seasonal variation underground water level is reduced, the side pressure is reduced, the middle positive bending moment of an upper plate is increased, and the box culvert concrete is easy to crack.
At present, in the prior art, a method for reinforcing box culvert cracks generally adopts a method of bonding steel plates on the surface of a structure for reinforcement. The key of the method is the adhesive, the whole reinforcement of the adhesive completely depends on the adhesive force of the adhesive, and the poor durability of the adhesive causes that the concrete slab cannot be firm and durable; in addition, the bonded surface must be cleaned during the box culvert crack reinforcement construction, and air bubbles must be removed to facilitate the close adhesion during the adhesive filling. In the prior art, the method for reinforcing the box culvert cracks is complex in construction process and poor in crack deformation control effect on the box culvert.
Therefore, the utility model aims at designing a novel box culvert crack deformation control reinforced structure to solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel box culvert crack deformation control reinforced structure, this box culvert crack deformation control reinforced structure's bulk rigidity is good, and the durability is good, can carry out effective control to box culvert concrete slab crack deformation, also can to the concrete degradation, peel off, vibrate disease such as incompact and carry out local or whole reinforcement, simple process, the suitability is strong.
The above technical purpose of the present invention can be achieved by the following technical solutions: a novel box culvert crack deformation control reinforcing structure comprises a concrete structure of a box culvert and a steel plate, wherein the steel plate is fixed on the surface of the concrete structure through a metal expansion anchor bolt; and a compacted mortar body is arranged in a gap between the steel plate and the surface of the concrete structure.
By adopting the technical scheme, when the box culvert crack deformation is controlled and reinforced, the steel plate is fixed on the surface of the concrete structure through the metal expanding anchor bolt aiming at the position to be reinforced of the box culvert crack deformation, so that the structure of the box culvert and the steel plate form a whole body capable of bearing force together, and the gap between the steel plate and the surface of the concrete structure is pressed to realize grouting, so that the integral rigidity of the reinforced structure is obviously improved, and the effect of controlling the box culvert crack deformation is ensured; the box culvert crack deformation control reinforcing structure is good in overall rigidity and durability, capable of effectively controlling crack deformation of concrete slabs of the box culvert and also capable of locally or integrally reinforcing diseases such as concrete deterioration, peeling and vibrating incompact, simple in process and strong in applicability.
The utility model discloses further set up to: the depth of the metal expansion type anchor bolt penetrating through the steel plate and anchored into the concrete structure is 10-15 times of the diameter of the metal expansion type anchor bolt.
By adopting the technical scheme, the depth of the metal expansion anchor bolt penetrating through the steel plate and anchored into the concrete structure is 10-15 times of the diameter of the metal expansion anchor bolt, so that the steel plate is conveniently ensured to be fixed on the stable shape of the surface of the existing concrete structure of the box culvert, and the structure of the box culvert and the steel plate are ensured to form a whole capable of bearing force together.
The utility model discloses further set up to: the metal expanding type crab-bolt is a plurality of, and is a plurality of the equidistant setting of metal expanding type crab-bolt.
Through adopting above-mentioned technical scheme, a plurality of metal expanding type crab-bolts equidistant setting, according to the degradation state of box culvert structure, its bearing capacity is big more for the interval that a plurality of metal expanding type crab-bolts arranged is the less.
The utility model discloses further set up to: the end part of the metal expanding anchor bolt exposed out of the steel plate is provided with a nut, and the nut is used for applying torque to fully expand the front end of the metal expanding anchor bolt anchored in the concrete structure so as to achieve tight anchoring.
By adopting the technical scheme, the nut is convenient for applying torque, and the metal expansion type anchor bolt is ensured to be fully expanded in a concrete structure so as to achieve a tight anchoring state.
The utility model discloses further set up to: the end part of the metal expanding anchor bolt exposed out of the steel plate is provided with a screw cap which is a plastic sleeve.
Through adopting above-mentioned technical scheme, through the nut, be convenient for protect the tip that metal expanding type crab-bolt exposes outside the steel sheet.
The utility model discloses further set up to: the thickness of the steel plate is 5-10 mm.
The utility model also provides a novel box culvert crack deformation control reinforced structure's reinforcement method, adopt the reinforcement method that crab-bolt and steel sheet combine, beat on the existing reinforced concrete structure thing of box culvert and establish metal expanding type crab-bolt, be fixed in the concrete structure surface with the steel sheet through metal expanding type crab-bolt, make concrete structure and steel sheet form the whole of a common atress, specifically include following step:
s1, detecting the structural cracks, strength and deflection deformation of the box culvert, checking the appearance of the box culvert, evaluating the structural mechanical state of the box culvert, and laying a foundation for the construction of box culvert crack deformation reinforcement;
s2, fixing a steel plate with the thickness of 5-10mm on the surface of the existing concrete structure of the box culvert to be reinforced by adopting a plurality of metal expansion type anchor bolts, wherein the anchoring depth of the metal expansion type anchor bolts into the concrete structure is not less than (10-15) d, wherein d is the diameter of the metal expansion type anchor bolts, and the distance between the plurality of metal expansion type anchor bolts is arranged according to the structural deterioration state of the box culvert;
s3, mounting nuts at the end parts of the metal expansion anchor bolts exposed out of the steel plate, and applying torque on the nuts to fully expand the front ends of the metal expansion anchor bolts anchored in the concrete structure to achieve tight anchoring;
s4, grouting a gap between the existing concrete mechanism and a steel plate of the box culvert to form compacted mortar body between the concrete structure and the steel plate;
and S5, after the strength of the compaction mortar body in the step S4 reaches a specified value, detecting and monitoring the strength and deformation of a reinforced structure consisting of a steel plate, a metal expanding anchor bolt and the compaction mortar body, and checking the reinforcing effect.
In step S2, the metal-expanding anchor bolt is plated with an anti-corrosion layer, and the portion of the metal-expanding anchor bolt exposed out of the steel plate is provided with a nut.
Wherein, the grouting in the step S4 adopts shrinkage-compensating mortar.
To sum up, the utility model discloses following beneficial effect has:
1. through the reinforcing structure of the utility model, the crack deformation control effect of the box culvert is good, the anchor bolts are arranged on the existing reinforced concrete structure of the box culvert, and the steel plate is fixed on the surface of the concrete structure through the anchor bolts, so that the concrete structure of the box culvert and the steel plate form a whole body which can bear force together, and the gap between the steel plate and the concrete is pressed to be grouted, thereby obviously improving the integral rigidity of the box culvert structure and having better crack deformation control effect of the box culvert;
2. the reinforced structure of the utility model has good durability, the metal expanding anchor bolt is coated with film for anti-corrosion protection, the exposed part of the metal expanding anchor bolt is covered with a plastic cap for protection, and then the cement mortar is adopted to carry out mud jacking on the gap between the concrete structure and the steel plate, so that the reinforced structure has good integral stress performance and durability;
3. the utility model discloses a reinforced structure and reinforcing method suitability are strong, and this reinforcing method can carry out effective control to box culvert concrete structure crack deformation, also can carry out local or whole reinforcement to diseases such as concrete degradation, spalling, vibration incompact, simple process, and the suitability is strong.
Drawings
Fig. 1 is a schematic structural diagram in an embodiment of the present invention;
FIG. 2 is a schematic view of the surface structure of a steel plate in an embodiment of the present invention;
FIG. 3 is an enlarged view at A in FIG. 1;
fig. 4 is a flowchart of a reinforcement method according to an embodiment of the present invention.
In the figure: 1. a concrete structure; 2. a metal expandable anchor bolt; 3. a steel plate; 4. compacting the mortar body; 5. a nut; 6. and (4) a nut.
Detailed Description
The present invention will be described in further detail with reference to the accompanying fig. 1-4.
Example (b): a novel box culvert crack deformation control reinforced structure is shown in figures 1, 2 and 3 and comprises a concrete structure 1 and a steel plate 3 of a box culvert, wherein the steel plate 3 is fixed on the surface of the concrete structure 1 through a metal expanding type anchor bolt 2. The gap between the steel plate 3 and the surface of the concrete structure 1 is pressed and grouted with the compacted mortar body 4.
In the present embodiment, the metal expandable anchor 2 is an expandable bolt having a surface coated with an anticorrosive coating. When controlling the reinforcement to box culvert crack deformation, need the reinforced (rfd) position to box culvert crack deformation, on the existing concrete structure 1 surface of box culvert, be fixed in steel sheet 3 on concrete structure 1's surface through metal expanding type crab-bolt 2, make the structure of box culvert and steel sheet 3 form the whole of a common atress to carry out the mudjacking to the space between steel sheet 3 and the concrete structure 1's the surface, show the bulk rigidity that promotes reinforced structure, thereby ensure the effect of box culvert crack deformation control. The box culvert crack deformation control reinforcing structure is good in overall rigidity and durability, capable of effectively controlling crack deformation of concrete slabs of the box culvert and also capable of locally or integrally reinforcing diseases such as concrete deterioration, peeling and vibrating incompact, simple in process and strong in applicability.
The depth of the metal-expanding anchor bolt 2, which penetrates through the steel plate 3 and is anchored into the concrete structure 1, is 10-15 times the diameter of the metal-expanding anchor bolt 2.
In this embodiment, the depth of the metal expandable anchor bolt 2 penetrating through the steel plate 3 and anchored into the concrete structure 1 is 10-15 times the diameter of the metal expandable anchor bolt 2, which is convenient for ensuring the steel plate 3 to be fixed on the surface of the existing concrete structure 1 of the box culvert to be stable, thereby ensuring that the structure of the box culvert and the steel plate 3 form a commonly stressed whole.
The metal expanding anchor bolt 2 is plural, and the plural metal expanding anchor bolts 2 are arranged at equal intervals.
In the present embodiment, the plurality of metal-expanding type anchor bolts 2 are arranged at equal intervals, and the smaller the interval at which the plurality of metal-expanding type anchor bolts 2 are arranged, the larger the bearing capacity thereof according to the deterioration state of the box culvert structure.
The end part of the metal expanding anchor bolt 2 exposed out of the steel plate 3 is provided with a nut 5, and the nut 5 is used for applying torque to ensure that the front end of the metal expanding anchor bolt 2 anchored in the concrete structure 1 is fully expanded to achieve tight anchoring.
In this embodiment, the nut 5 facilitates the application of torque, ensuring that the metal expandable anchor bolt 2 is sufficiently expanded to achieve a tight anchoring state when anchored into the concrete structure 1.
The end part of the metal expanding anchor bolt 2 exposed out of the steel plate 3 is provided with a screw cap 6, and the screw cap 6 is a plastic sleeve.
In the present embodiment, the end of the metal expandable anchor bolt 2 exposed from the steel plate 3 is protected by the nut 6.
The thickness of the steel plate 3 is (5-10) mm.
The utility model also provides a novel box culvert crack deformation control reinforced structure's reinforcement method, as shown in fig. 4, adopt the reinforcement method that crab-bolt and steel sheet 3 combine, beat on the existing reinforced concrete structure 1 thing of box culvert and establish metal expanding type crab-bolt 2, be fixed in concrete structure 1 surface with steel sheet 3 through metal expanding type crab-bolt 2, make concrete structure 1 and steel sheet 3 form the whole of a common atress, specifically include following step:
s1, detecting the structural cracks, strength and deflection deformation of the box culvert, inspecting the appearance of the box culvert, evaluating the structural mechanical state of the box culvert, and laying a foundation for the construction of box culvert crack deformation reinforcement.
S2, fixing a (5-10) mm steel plate 3 on the surface of the existing concrete structure 1 of the box culvert to be reinforced by adopting a plurality of metal expansion type anchor bolts 2, wherein the anchoring depth of the metal expansion type anchor bolts 2 in the concrete structure 1 is not less than (10-15) d, d is the diameter of the metal expansion type anchor bolts 2, and the distance between the plurality of metal expansion type anchor bolts 2 is arranged according to the structural deterioration state of the box culvert.
And S3, installing a nut 5 at the end part of the metal expansion type anchor bolt 2 exposed out of the steel plate 3, and applying torque on the nut 5 to ensure that the front end of the metal expansion type anchor bolt 2 anchored in the concrete structure 1 is fully expanded to achieve tight anchoring.
And S4, grouting the gap between the existing concrete mechanism of the box culvert and the steel plate 3 to form compacted mortar body 4 between the concrete structure 1 and the steel plate 3.
S5, when the strength of the compacted mortar body 4 in the step S4 reaches a predetermined value, the strength and deformation of the reinforcing structure formed by the steel plate 3, the metal expanding anchor bolt 2, and the compacted mortar body 4 are detected and monitored, and the reinforcing effect is checked.
In step S2, the surface of the metal-expanding anchor bolt 2 is plated with an anti-corrosion layer, and the part of the metal-expanding anchor bolt 2 exposed out of the steel plate 3 is installed with a nut 6.
Wherein, the grouting in the step S4 adopts shrinkage-compensating mortar.
The working principle is as follows: when controlling the reinforcement to box culvert crack deformation, need the reinforced (rfd) position to box culvert crack deformation, on the existing concrete structure 1 surface of box culvert, be fixed in steel sheet 3 on concrete structure 1's surface through metal expanding crab-bolt 2, make the structure of box culvert and steel sheet 3 form the whole of a common atress to carry out the mudjacking to the space between steel sheet 3 and the concrete structure 1's the surface, show the bulk rigidity who promotes reinforced structure, thereby ensure the effect of box culvert crack deformation control. The box culvert crack deformation control reinforcing structure is good in overall rigidity and durability, capable of effectively controlling crack deformation of concrete slabs of the box culvert and also capable of locally or integrally reinforcing diseases such as concrete deterioration, peeling and vibrating incompact, simple in process and strong in applicability.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a novel box culvert crack deformation control reinforced structure, characterized by: the steel plate (3) is fixed on the surface of the concrete structure (1) through a metal expanding anchor bolt (2); and a compacted mortar body (4) is arranged in a gap between the steel plate (3) and the surface of the concrete structure (1).
2. The novel box culvert crack deformation control reinforced structure of claim 1, which is characterized in that: the depth of the metal expansion anchor bolt (2) penetrating through the steel plate (3) and anchored into the concrete structure (1) is 10-15 times of the diameter of the metal expansion anchor bolt (2).
3. The novel box culvert crack deformation control reinforced structure of claim 1, which is characterized in that: metal expanding type crab-bolt (2) are a plurality of, and are a plurality of metal expanding type crab-bolt (2) equidistant setting.
4. The novel box culvert crack deformation control reinforced structure of claim 1, which is characterized in that: the end part of the metal expanding anchor bolt (2) exposed out of the steel plate (3) is provided with a nut (5), the nut (5) is used for applying torque, so that the front end of the metal expanding anchor bolt (2) anchored into the concrete structure (1) is fully expanded to achieve tight anchoring.
5. The novel box culvert crack deformation control reinforced structure of claim 1, which is characterized in that: the end part of the metal expanding anchor bolt (2) exposed out of the steel plate (3) is provided with a screw cap (6), and the screw cap (6) is a plastic sleeve.
6. The novel box culvert crack deformation control reinforced structure of claim 1, which is characterized in that: the thickness of the steel plate (3) is 5-10 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120005228.5U CN214532977U (en) | 2021-01-04 | 2021-01-04 | Novel box culvert crack deformation control reinforced structure |
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| CN202120005228.5U CN214532977U (en) | 2021-01-04 | 2021-01-04 | Novel box culvert crack deformation control reinforced structure |
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| CN214532977U true CN214532977U (en) | 2021-10-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112761672A (en) * | 2021-01-04 | 2021-05-07 | 福建工程学院 | Novel box culvert crack deformation control reinforcing structure and reinforcing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112761672A (en) * | 2021-01-04 | 2021-05-07 | 福建工程学院 | Novel box culvert crack deformation control reinforcing structure and reinforcing method |
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