CN113235464A - Manhole reinforcing device and rapid reinforcing method for existing bridge concrete box girder - Google Patents
Manhole reinforcing device and rapid reinforcing method for existing bridge concrete box girder Download PDFInfo
- Publication number
- CN113235464A CN113235464A CN202110614424.7A CN202110614424A CN113235464A CN 113235464 A CN113235464 A CN 113235464A CN 202110614424 A CN202110614424 A CN 202110614424A CN 113235464 A CN113235464 A CN 113235464A
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- hole
- box girder
- ring plate
- plate
- arc
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
Abstract
The invention discloses a manhole reinforcing device and a rapid reinforcing method for an existing bridge concrete box girder, wherein a manhole communicated with an inner cavity of the box girder is formed by cutting the box girder, and the manhole reinforcing device comprises: the inner ring plate comprises two arc-shaped plates which are detachably spliced together, the two arc-shaped plates are attached to the inner side wall of the box girder, and a ring hole of the inner ring plate is aligned to one end of the overhaul hole; the outer ring plate is attached to the outer side wall of the box girder, and a ring hole of the outer ring plate is aligned to the other end of the overhaul hole; and the multichannel is to drawing the subassembly, including perforating rod and drawknot pole, the perforating rod is worn to locate to overhaul the hole and is leaned on in the inner wall of overhauing the hole, and the both ends of perforating rod extend respectively in the annular ring of interior crown plate and outer crown plate, are connected with the drawknot pole between the both ends of perforating rod and interior crown plate and the outer crown plate respectively, and the multichannel is to drawing the subassembly and setting up along the circumferencial direction interval of overhauing the hole. The invention solves the problems that the traditional concrete beam bridge box girder manhole opening is complicated to reinforce and affects the box girder quality safety.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a manhole reinforcing device and a rapid reinforcing method for an existing bridge concrete box girder.
Background
In urban traffic networks, there are a large number of existing concrete box girder bridges. Due to the fact that the construction age of part of concrete beam bridges is long, the requirements for checking, maintaining and reinforcing the interior of a box chamber of a box girder of the beam bridge exist.
After the traditional manual work is carried out to the access hole of beam bridge box girder, need bore the access hole of a lot of fixed orifices installation steel sheet in order to consolidate the box girder on the roof beam body. This causes the influence to the quality safety of case roof beam, and the connection between the steel member of reinforcing steel sheet adopts the welding, causes to need to carry out welding operation in beam bridge box inside, and the connection technology is complicated, and has the loaded down with trivial details, installation time is long, the required manual work is many, maintenance cost is high and precision is also not high grade shortcoming.
Disclosure of Invention
In order to overcome the defects in the prior art, the device and the method for reinforcing the access hole of the existing bridge concrete box girder are provided so as to solve the problems that the reinforcing process of the opening of the access hole of the box girder of the traditional concrete beam bridge is complicated and influences the quality safety of the box girder.
For realizing above-mentioned purpose, provide a manhole reinforcing apparatus of existing bridge concrete box girder, existing bridge concrete box girder excavates the maintenance hole that is formed with the inside cavity of intercommunication box girder, and manhole reinforcing apparatus includes:
the inner ring plate comprises two arc-shaped plates which are detachably spliced together, the two arc-shaped plates are attached to the inner side wall of the box girder, and a ring hole of the inner ring plate is aligned to one end of the overhaul hole;
the outer ring plate is attached to the outer side wall of the box girder, and a ring hole of the outer ring plate is aligned to the other end of the overhaul hole; and
the multi-channel opposite-pulling assembly comprises a perforated rod and a tie rod, the perforated rod penetrates through the overhaul hole and abuts against the inner wall of the overhaul hole, two ends of the perforated rod respectively extend into the annular holes of the inner annular plate and the outer annular plate, the tie rod is connected between the two ends of the perforated rod and the inner annular plate and between the two ends of the outer annular plate respectively, and the multi-channel opposite-pulling assembly is arranged at intervals along the circumferential direction of the overhaul hole.
Further, the width of the arc plate is smaller than the inner diameter of the overhaul hole.
Furthermore, the arc plate has two opposite ends, the two ends of the arc plate are respectively connected with shaft sleeves arranged along the radial direction of the arc plate, and the shaft sleeves at the two ends of the two arc plates are aligned with each other and inserted with locking shafts.
Furthermore, the pull rod locking device further comprises a locking structure for locking the pull rod, and the locking structure is respectively installed on the inner ring plate and the outer ring plate.
Further, the locking structure includes:
the base is fixedly arranged on the inner ring plate or the outer ring plate, a through hole is formed in the base, and an opening of the through hole faces the ring hole; and
the threaded sleeve is rotatably arranged in the through hole, an external thread is formed on the pulling rod, and the pulling rod is screwed in the threaded sleeve.
Furthermore, two ends of the threaded sleeve extend to the outer parts of two ends of the through hole, pipe orifices at two ends of the threaded sleeve form a limiting flange, and the limiting flange abuts against the side face of the base.
Further, the arc plate is bonded to the inner side wall of the box girder.
Further, the inner diameter of the annular hole of the inner ring plate and the inner diameter of the annular hole of the outer ring plate are matched with the inner diameter of the overhaul hole.
The invention provides a rapid reinforcing method of a manhole reinforcing device of an existing bridge concrete box girder, which comprises the following steps:
digging an overhaul hole which is communicated with an internal cavity of the box girder on the existing bridge concrete box girder;
the two arc-shaped plates are disassembled and then are conveyed to the inner cavity through the overhauling hole;
splicing the two arc-shaped plates to form an inner ring plate, and attaching the inner ring plate to the inner side wall of the box girder, so that an annular hole of the inner ring plate is aligned to one end of the overhaul hole;
attaching an outer ring plate to the outer side wall of the box girder so that a ring hole of the outer ring plate is aligned to the other end of the overhaul hole;
the split type maintenance hole structure is characterized in that a plurality of split components are installed at intervals along the circumferential direction of the maintenance hole, when each split component is installed, the perforation rods of the split components penetrate through the maintenance hole and abut against the inner wall of the maintenance hole, and the tie rods at two ends of the perforation rods are connected to the inner ring plate and the outer ring plate respectively, so that each split component is tied to the inner ring plate and the outer ring plate.
The manhole reinforcing device has the advantages that the manhole reinforcing device for the existing bridge concrete box girder has the advantages of high installation precision, convenience in operation, few working procedures, low cost and the like, and can realize rapid hole opening reinforcement of the existing concrete box girder bridge; on the other hand, compared with the traditional hole-opening reinforcing mode, the box girder is not additionally broken, and the working surface of equipment is not needed. In the urban municipal renewal project, the method has strong practicability and popularization.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of a manhole reinforcing device of an existing bridge concrete box girder according to an embodiment of the present invention.
Fig. 2 is a perspective view of a manhole reinforcing apparatus of an existing bridge concrete box girder according to an embodiment of the present invention.
Fig. 3 is an exploded view of the inner ring plate according to the embodiment of the present invention.
Fig. 4 is an exploded view of the pull-pair assembly and the locking structure according to the embodiment of the present invention.
Fig. 5 is a schematic view of the locking structure of the embodiment of the present invention installed on the inner ring plate.
Fig. 6 is a schematic view showing a use state of the manhole reinforcing apparatus of the existing bridge concrete box girder according to the embodiment of the present invention.
Fig. 7 is a cross-sectional view taken at a-a in fig. 6.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The existing bridge concrete box girder 1 is excavated to form an overhaul hole 10 communicated with an inner cavity of the box girder 1. As shown in fig. 6 and 7, the bottom of the box girder 1 is bored with an access hole 10 communicating with the sealed inner cavity of the box girder.
Referring to fig. 1 to 7, the present invention provides an manhole reinforcing apparatus of an existing bridge concrete box girder, including: an inner ring plate 2, an outer ring plate 3 and a plurality of opposite pulling components 4.
The inner ring plate 2 comprises two arc-shaped plate pieces 21. Two arcuate panels 21 are removably joined together to form an inner annular panel. The two arc-shaped plates 21 are attached to the inner side wall of the box girder 1. The annular hole of the inner annular plate 2 is aligned with one end of the manhole 10.
The outer ring plate 3 is attached to the outer side wall of the box girder 1. The annular ring of the outer annular plate 3 is aligned with the other end of the access hole 10. In this embodiment, the arc plate 21 is adhered to the inner side wall of the box girder 1. The outer ring plate is bonded to the outer side wall of the box girder 1.
Counter-pull assembly 4 comprises perforated rod 41 and drawknot rod 42.
The piercing member 41 is disposed through the access hole 10 and abuts against the inner wall of the access hole 10. Both ends of the piercing member 41 extend into the annular holes of the inner ring plate 2 and the outer ring plate 3, respectively. The two ends of the perforated rod 41 and the inner ring plate 2 and the outer ring plate 3 are connected with a tie rod 42 respectively. Specifically, tie rods 42 are connected between the upper ends of the piercing rods 41 and the inner ring plate 2. Tie rods 42 are connected between the lower ends of the piercing rods 41 and the outer ring plate 3, respectively.
The plurality of opposite pulling assemblies 4 are arranged at intervals along the circumferential direction of the access hole 10.
The manhole reinforcing device for the existing bridge concrete box girder has the advantages of high installation precision, convenience in operation, few processes, low cost and the like, and can realize rapid hole opening and reinforcement of the existing concrete box girder bridge; on the other hand, compared with the traditional hole-opening reinforcing mode, the device working surface is not needed. In the urban municipal renewal project, the method has strong practicability and popularization.
In the present embodiment, the inner ring plate 2 and the outer ring plate 3 are steel plates. The inner diameter of the annular holes of the inner ring plate 2 and the outer ring plate 3 is adapted to the inner diameter of the manhole 10.
As shown in fig. 3, the two arc-shaped plates forming the inner ring plate are semicircular arc-shaped plates. The width of the arc plate 21 is smaller than the inner diameter of the access hole 10. After the overhaul hole of the box girder is cut, the two arc-shaped plates are respectively conveyed to the inner cavity of the box girder through the overhaul hole.
In a preferred embodiment, each arcuate panel 21 has opposite ends. Two ends of the arc plate 21 are respectively connected with a shaft sleeve 22 arranged along the radial direction of the arc plate 21. The shaft sleeves 22 at the two ends of the two arc-shaped plates 21 are aligned with each other and are inserted with locking shafts 23.
In this embodiment, the axle sleeves at the ends of the two arc-shaped plates are coaxially arranged. The locking shaft is inserted in the shaft sleeves at the end parts of the two arc-shaped plates.
As a preferred embodiment, the manhole reinforcing device of the existing bridge concrete box girder of the present invention further includes a locking structure 5. The locking structure 5 is respectively arranged on the inner ring plate 2 and the outer ring plate 3. The locking structure 5 is used for locking the tie rod 42.
Specifically, the locking structure 5 includes: a base 51 and a threaded sleeve.
As shown in fig. 4 and 5, the base 51 is fixed to the inner ring plate 2 or the outer ring plate 3. The base 51 is provided with a through hole. The mouth of the through-hole of the base 51 is arranged towards the ring hole.
The threaded sleeve is rotatably arranged in the through hole, and two ends of the threaded sleeve respectively extend to the outer parts of two ends of the through hole of the base. The drawknot rod 42 is formed with external threads. The tie rod 42 is screwed to the threaded sleeve.
In this embodiment, the drawstring rod and the piercing member are integrally formed as shown in FIG. 4.
In a preferred embodiment, the external extensions of the nozzles at the two ends of the threaded sleeve form a stop flange 53. The stop flange 53 abuts against the side of the base 51. The limiting flange is provided with a circle along the circumferential direction of the threaded sleeve.
With reference to fig. 6 and 7 again, the present invention provides a rapid reinforcing method for a manhole reinforcing device of an existing bridge concrete box girder 1, comprising the steps of:
s1: and (3) digging an overhaul hole 10 formed in the existing bridge concrete box girder 1 and communicated with the inner cavity of the box girder 1.
And (4) chiseling or perforating the overhaul hole to avoid the main rib position of the bottom plate of the box girder, chiseling the concrete of the bottom plate, and arranging the overhaul hole.
S2: the two arc-shaped plates 21 are disassembled and then conveyed to the inner cavity through the access hole 10.
S3: and splicing the two arc-shaped plates 21 to form an inner ring plate 2, and attaching the inner ring plate 2 to the inner side wall of the box girder 1, so that the ring hole of the inner ring plate 2 is aligned to one end of the access hole 10.
Specifically, the shaft sleeves at the two ends of the two arc-shaped plates are aligned with each other, so that the two shaft sleeves at the ends of the arc-shaped plates are coaxially arranged. After the two shaft sleeves at the end parts of the arc-shaped plates are coaxially arranged, the locking shaft is inserted into the two shaft sleeves, so that the two arc-shaped plates form an inner ring plate through evaluation.
When the inner ring plate is arranged on the inner side wall of the box girder, the position of the inner side wall of the box girder, which is bonded with the inner ring plate, is cleaned and polished.
S4: and attaching an outer ring plate 3 to the outer side wall of the box girder 1, so that the ring hole of the outer ring plate 3 is aligned with the other end of the access hole 10.
When the outer ring plate is installed on the outer side wall of the box girder, the position of the outer side wall of the box girder, which is bonded with the outer ring plate, is cleaned and polished.
S5: installing a plurality of opposite-pulling components 4 at intervals along the circumferential direction of the overhaul hole 10, when installing each opposite-pulling component 4, penetrating the perforation rod 41 of the opposite-pulling component 4 into the overhaul hole 10 and abutting against the inner wall of the overhaul hole 10, and respectively connecting the tie rods 42 at the two ends of the perforation rod 41 with the inner ring plate 2 and the outer ring plate 3, so that each opposite-pulling component 4 is tied on the inner ring plate 2 and the outer ring plate 3.
Specifically, when installing each one to drawing the subassembly, will drawing the subassembly to wearing to locate in overhauing the hole for the perforation pole wears to locate to overhaul hole 10 and supports and lean on in the inner wall of overhauing hole 10, and the drawknot pole 42 at the upper and lower both ends of perforation pole aligns in the threaded sleeve pipe of the base of interior crown plate, the threaded sleeve pipe of the base of outer crown plate respectively.
After the pulling and connecting rod is aligned with the threaded sleeve, the pulling and connecting rod is screwed in the threaded sleeve, so that more components are pulled and connected between the inner ring plate and the outer ring plate to reinforce the overhauling hole.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (9)
1. The utility model provides an access hole reinforcing apparatus of existing bridge concrete box girder, its characterized in that, existing bridge concrete box girder excavates the maintenance hole that is formed with the inside cavity of intercommunication box girder, and access hole reinforcing apparatus includes:
the inner ring plate comprises two arc-shaped plates which are detachably spliced together, the two arc-shaped plates are attached to the inner side wall of the box girder, and a ring hole of the inner ring plate is aligned to one end of the overhaul hole;
the outer ring plate is attached to the outer side wall of the box girder, and a ring hole of the outer ring plate is aligned to the other end of the overhaul hole; and
the multi-channel opposite-pulling assembly comprises a perforated rod and a tie rod, the perforated rod penetrates through the overhaul hole and abuts against the inner wall of the overhaul hole, two ends of the perforated rod respectively extend into the annular holes of the inner annular plate and the outer annular plate, the tie rod is connected between the two ends of the perforated rod and the inner annular plate and between the two ends of the outer annular plate respectively, and the multi-channel opposite-pulling assembly is arranged at intervals along the circumferential direction of the overhaul hole.
2. The manhole reinforcing apparatus of an existing bridge concrete box girder according to claim 1, wherein the width of the arc-shaped plate block is smaller than an inner diameter of the manhole.
3. The manhole reinforcing apparatus for an existing bridge concrete box girder according to claim 1, wherein the arc-shaped plate block has opposite ends, and shaft sleeves are respectively coupled to the opposite ends of the arc-shaped plate block in a radial direction of the arc-shaped plate block, and the shaft sleeves of the opposite ends of the arc-shaped plate block are aligned with each other and inserted with locking shafts.
4. The manhole reinforcing apparatus for an existing bridge concrete box girder according to claim 1, further comprising locking structures for locking the tie bars, the locking structures being installed to the inner ring plate and the outer ring plate, respectively.
5. The manhole reinforcing apparatus for the existing bridge concrete box girder according to claim 4, wherein the locking structure includes:
the base is fixedly arranged on the inner ring plate or the outer ring plate, a through hole is formed in the base, and an opening of the through hole faces the ring hole; and
the threaded sleeve is rotatably arranged in the through hole, an external thread is formed on the pulling rod, and the pulling rod is screwed in the threaded sleeve.
6. The manhole reinforcing device for the existing bridge concrete box girder of claim 5, wherein two ends of the threaded sleeve extend to the outside of two ends of the through hole, and pipe openings at two ends of the threaded sleeve form a limiting flange which abuts against the side surface of the base.
7. The manhole reinforcing apparatus for an existing bridge concrete box girder according to claim 1, wherein the arc-shaped plate block is bonded to an inner sidewall of the box girder.
8. A manhole reinforcing apparatus for an existing bridge concrete box girder according to claim 1, wherein the inner diameter size of the annular holes of the inner and outer annular plates is adapted to the inner diameter size of the manhole hole.
9. A rapid reinforcing method of a manhole reinforcing device of an existing bridge concrete box girder according to any one of claims 1 to 8, comprising the steps of:
digging an overhaul hole which is communicated with an internal cavity of the box girder on the existing bridge concrete box girder;
the two arc-shaped plates are disassembled and then are conveyed to the inner cavity through the overhauling hole;
splicing the two arc-shaped plates to form an inner ring plate, and attaching the inner ring plate to the inner side wall of the box girder, so that an annular hole of the inner ring plate is aligned to one end of the overhaul hole;
attaching an outer ring plate to the outer side wall of the box girder so that a ring hole of the outer ring plate is aligned to the other end of the overhaul hole;
the split type maintenance hole structure is characterized in that a plurality of split components are installed at intervals along the circumferential direction of the maintenance hole, when each split component is installed, the perforation rods of the split components penetrate through the maintenance hole and abut against the inner wall of the maintenance hole, and the tie rods at two ends of the perforation rods are connected to the inner ring plate and the outer ring plate respectively, so that each split component is tied to the inner ring plate and the outer ring plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110614424.7A CN113235464A (en) | 2021-06-02 | 2021-06-02 | Manhole reinforcing device and rapid reinforcing method for existing bridge concrete box girder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110614424.7A CN113235464A (en) | 2021-06-02 | 2021-06-02 | Manhole reinforcing device and rapid reinforcing method for existing bridge concrete box girder |
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| CN113235464A true CN113235464A (en) | 2021-08-10 |
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| CN202110614424.7A Pending CN113235464A (en) | 2021-06-02 | 2021-06-02 | Manhole reinforcing device and rapid reinforcing method for existing bridge concrete box girder |
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2021
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