CN209555788U - City overhead road prestressed cored slab end web inclined crack Disease Processing structure - Google Patents
City overhead road prestressed cored slab end web inclined crack Disease Processing structure Download PDFInfo
- Publication number
- CN209555788U CN209555788U CN201920004429.6U CN201920004429U CN209555788U CN 209555788 U CN209555788 U CN 209555788U CN 201920004429 U CN201920004429 U CN 201920004429U CN 209555788 U CN209555788 U CN 209555788U
- Authority
- CN
- China
- Prior art keywords
- baffle
- cored slab
- gas vent
- holes
- grouting material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model belongs to technical field of bridge construction, specifically related to a kind of city overhead road prestressed cored slab end web inclined crack Disease Processing structure, including cored slab, the end upper surface of the cored slab successively opens fill orifice, gas vent and baffle holes, and fill orifice, gas vent and baffle holes are filled reparation after grouting；The cored slab is perfused with grouting material from the inside 1-2.5m in end, is fixed with two block baffle plugging grouting material in cored slab, filled with foamed glue between two block baffles；The baffle is equal with the hollow bore dia of cored slab, and baffle holes are rectangle, and baffle hole length is equal with the diameter of baffle, and baffle hole width is equal with the thickness of baffle.The utility model increases effectively prestressed cored slab end cross-sectional product, can directly increase the shearing resistance section of concrete, raising bearing capacity being capable of safe, efficient progress cored slab end inclined crack processing by the way that grouting material is perfused in cored slab end.
Description
Technical field
The invention belongs to technical field of bridge construction, and in particular to arrive a kind of city overhead road prestressed cored slab end abdomen
Plate inclined crack Disease Processing structure and technology.
Background technique
Prestressed cored slab is easy for installation and largely use in engineering because from heavy and light, manufacture craft is mature, low cost,
Cored slab crack disease is generally existing simultaneously, and relatively common has beam bottom transverse crack, beam bottom longitudinal crack, web vertical to split
Seam, web inclined crack etc., wherein cored slab end web inclined crack is a kind of disease of relational structure safety, and beam-ends is oblique
Crack is due to caused by hollow slab girder beam-ends shear resistance deficiency.
Comprehensive analysis city overhead road prestressed cored slab end web inclined crack disease Producing reason mainly have with
Lower three aspect: (one), which overloads, to be influenced: urban viaduct of the runing time at 20 years or more, with the increasing that urban traffic is measured, is surpassed
The passage violating the regulations of carrier vehicle, is particularly acute the destruction of viaduct；(2) structural factor: pre-tensioning system cored slab structure is last century
The nineties be exactly one of a kind of widely applied structure type in China, this class formation the characteristics of presstressed reinforcing steel in end without curved
It rises, shearing resistance mainly has the stirrup of end and concrete web to undertake, and this structural form is on the weak side on shear resistance, especially outer
The effect of side plate, anticollision barrier all concentrates on outer side plate, causes secondary dead load larger, be easy to cause structure crack；(3)
Construction quality: according to testing result, concrete strength meets former design requirement, but engineering practice shows that construction method causes
Structure size variability is larger；In addition there are exhaustion phases in end for prestressing force, can be mixed to end when presstressed reinforcing steel is truncated in end
The solidifying raw biggish impact force of local products, adversely affects end concrete quality.
Web inclined crack handle measure in cored slab end is general at present are as follows: fracture width, which is no more than, standardizes defined limit value
When, carry out dead-end fracture；If fracture width is more than to standardize defined limit value to reinforce web plate, to improve it
Shear resistant capacity, generallys use affixing steel plate or beam-ends Enlargement of Section is reinforced.When handling cored slab inclined crack, especially
It is the old overpass that city is being runed, not only the shear resistant capacity of Viaduct Structure is increased to not due to vapour -20
Grade, hang -100 grades former design load ensure structure safety, while be contemplated that be city overhead road traffic dispersion it is special
Property, social effect is taken into account, the influence to ambient enviroment is shortened the construction period and reduce as far as possible.
Summary of the invention
The present invention to solve the deficiencies in the prior art, it is oblique to provide a kind of city overhead road prestressed cored slab end web
Crack disease processing structure and technology.
The present invention is achieved by the following technical solutions:
A kind of city overhead road prestressed cored slab end web inclined crack Disease Processing structure, including cored slab, institute
The end upper surface for stating cored slab successively opens fill orifice, gas vent and baffle holes, and fill orifice is used to the inside of cored slab be perfused
Grouting material, whether gas vent is closely knit and exclude the gas in cored slab cavity for detect grouting, and baffle holes are used to install baffle,
Fill orifice, gas vent and baffle holes are filled reparation after grouting；The cored slab is perfused with from the inside 1-2.5m in end
Grouting material, is fixed with two block baffle plugging grouting material in cored slab, filled with foamed glue between two block baffles；The baffle is circle
Shape, baffle diameter is equal with the hollow bore dia of cored slab, and baffle holes are rectangle, the diameter phase of baffle hole length and baffle
Deng baffle hole width is equal with the thickness of baffle.
The baffle is round bamboo slab rubber.
The fill orifice is repaired using epoxy resin mortar filling, and gas vent carries out dense packing effect reparation, baffle using grouting material
Hole adds epoxy concrete to be filled reparation using setting steel mesh.
The position with pores no-reinforcing-bar and steel strand wires of the fill orifice, gas vent and baffle holes.
The baffle is fixed in cored slab by concreting or reinforcing bar.
A kind of city overhead road prestressed cored slab end web inclined crack Disease Processing technology, includes the following steps:
(1) fill orifice, gas vent and baffle successively positioning drilling: are positioned along cored slab length direction in the end of cored slab
Hole；The length of baffle holes is equal with the diameter of lower step baffle to be mounted, and width is equal with the thickness of baffle；Baffle holes with it is hollow
The distance of plate end is 1-2.5m；
(2) it cleans cored slab: cored slab inside being cleaned using high pressure water；
(3) baffle is installed: first filling in the first block baffle in cored slab from baffle holes, revolves the first block baffle after filling in
Turning 90 degrees makes its vertical blocking hollow hole, then fills in another block baffle from baffle holes, and being rotated by 90 ° after filling in seals it vertically
Stifled hollow hole, squeezes into foamed glue between two block baffles after two block baffles are fixed；Above-mentioned baffle is the hollow hole with cored slab
The equal circular shuttering of diameter；
(4) grouting material is perfused: fill orifice and gas vent are separately connected grouting conduit and exhaust manifolds, then from grouting conduit
Start that grouting material is perfused；The slurry of gas vent outflow is observed as thick stopping perfusion, is continued again before grouting material initial set
Infuse grouting material；
(5) fill orifice, gas vent and baffle holes reparation: after the completion of perfusion, respectively to fill orifice, gas vent and baffle holes into
Row is repaired.
As a preferred solution:
In the step (1), the position of opening of fill orifice, gas vent and baffle holes avoids reinforcing bar, steel strand wires.
In the step (3), baffle is fixed using concreting or reinforcing bar.
In the step (4), grouting material is irrigated using screw pump.
In the step (5), fill orifice uses epoxy resin mortar reparation, and gas vent carries out dense packing effect, gear using grouting material
Plate hole adds epoxy concrete to be repaired using setting steel mesh.
The invention has the benefit that the present invention is only in the milk to the length of prestressed cored slab end 1-2.5m, it can
Effectively increase prestressed cored slab end cross-sectional product, can directly increase the shearing resistance section of concrete, improves bearing capacity, Neng Gouan
Entirely, the processing of cored slab end inclined crack is efficiently carried out；Cored slab is blocked using baffle and foamed glue, it is at low cost, from heavy and light,
It blocks closely knit；Step of the present invention is simple, and strong operability is saved the area, and economic benefit and social benefit are significant.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
In figure, 1 fill orifice, 2 gas vents, 3 baffle holes, 4 foamed glues, 5 baffles.
Specific embodiment
Specific embodiments of the present invention are given below, it should be noted that the invention is not limited to implement in detail below
Example, all equivalent transformations made on the basis of the technical solutions of the present application each fall within protection scope of the present invention.
The present invention is directed to the old overpass runed of city, is the simply supported slab based on prestressed cored slab for structure
Bridge is incorporated in Jinan City's overhead way along the river maintenance and reinforcement example, with following example to the technology of the present invention describe in detail as
Under:
A kind of city overhead road prestressed cored slab end web inclined crack Disease Processing technology, includes the following steps:
(1) positioning drilling
Fill orifice 1, gas vent 2 and baffle holes 3 are successively positioned along cored slab length direction in the end of cored slab, such as attached drawing
Shown in 1, wherein fill orifice 1 is used for the grouting in cored slab hollow hole, and whether gas vent 2 is closely knit for detection grouting and excludes sky
Intracavitary gas, baffle holes 3 realize that part is in the milk for installing baffle 5, and baffle holes 3 are rectangle, the length of baffle holes 3
Equal with the diameter of lower step baffle 5 to be mounted, width is equal with the thickness of baffle 5.
The position using instrument positioning girder steel strand wires, reinforcing bar is needed before drilling, position of opening avoids reinforcing bar, steel twists
Line, so that the disturbance to concrete structure is preferably minimized；Grouting material mobility after guaranteeing, exhaust are also needed during positioning
Hole 2 need to be located in highest point within the scope of grouting material, and it is close just to can guarantee that grouting material has reached when gas vent 2 has grouting material outflow
It is real；Baffle holes 3 are preferred at a distance from cored slab end in 1-2.5m, because close to bending resistance of the cored slab end aperture to cored slab
Bearing capacity influence is smaller, and cored slab end center position is in prestressing force non-active area.
(2) cored slab is cleaned
In order to guarantee that grouting material and the original structure concrete of subsequent handling work together, need to guarantee grouting material and cored slab
Between free from dust influence.It is injected and is cleaned from baffle holes 3 using high pressure water when cleaning cored slab, ensured when outflow is clear water ashless
Dirt can stop cleaning, and carry out the construction of subsequent processing after the completion of cleaning as early as possible, new dust is prevented to be again introduced into.
(3) baffle 5 is installed
Baffle 5 is the circular shuttering equal with the hollow bore dia of cored slab, using plank sheathing, such as bamboo slab rubber, at
This is low and from heavy and light.Two block baffles 5 are successively installed, are first filled in the first block baffle 5 in cored slab from baffle holes 3, after filling in
Baffle 5 is rotated by 90 °, makes it perpendicular to the direction of hollow hole, baffle 5 just blocks hollow hole, then fills in from baffle holes 3
Enter another block baffle 5, vertical blank heart hole is rotated by 90 ° after filling in and is blocked, then that two block baffles 5 are fixed, fixed coagulation
Soil pours or other objects such as reinforcing bar are fixed.Then foamed glue 4 is squeezed between two block baffles 5, foamed glue 4 is from baffle holes
3 pour into, and foamed glue 4 foams in the hollow hole between two block baffles 5 and blocks the gap between baffle 5.Guarantee hair in this way
Bubble glue 4 has certain length, can play and block gap and provide certain barrier force to baffle 5.Using fluid foamed glue 4, meet
It is expanded after air, is easy to operate in small space, operability is stronger.And cost is relatively low for baffle 5 and foamed glue 4, and from
Weight is smaller, can not remove, disposable to amortize, and saves cost of labor.
(4) grouting material is perfused
Fill orifice 1 and gas vent 2 are separately connected grouting conduit and exhaust manifolds, and grouting is then perfused since grouting conduit
Material, grouting material need to pay attention to sight when grouting material is perfused using the common grouting material or special-type grouting material of existing reinforcing
The slurry for examining the outflow of gas vent 2 must ensure that the slurry flowed out can just stop being perfused to be thick.Before grouting material initial set again
Continuous note grouting material is carried out, to ensure that the inside grouting material reaches closely knit.
Screw pump can be used to be in the milk when grouting, it is possible to use existing any grouting equipment, by the outlet of screw pump
Grouting conduit is accessed, grouting material is moved into screw pump and then starts consolidation by grouting.
(5) fill orifice 1, gas vent 2 and baffle holes 3 are repaired
After the completion of perfusion, fill orifice 1, gas vent 2 and baffle holes 3 are repaired respectively.Epoxy sand can be used in fill orifice 1
Slurry repair, gas vent 2 can be used grouting material carry out dense packing effect, baffle holes 3 can be used setting steel mesh add epoxy concrete into
Row is repaired.Reparation is not limited to the above method, as long as existing reparation means can reach the purpose of the present invention in guarantor of the invention
It protects in range.
Above-mentioned processing technique ultimately forms a kind of city overhead road prestressed cored slab end web inclined crack disease
Processing structure: including cored slab, the end upper surface of the cored slab successively opens fill orifice 1, gas vent 2 and baffle holes 3, fills
Orifice 1 is used to the inside of cored slab be perfused grouting material, and whether gas vent 2 is closely knit for detection grouting and excludes in cored slab cavity
Gas, for baffle holes 3 for installing baffle 5, fill orifice 1, gas vent 2 and baffle holes 3 are filled reparation after grouting；Institute
It states cored slab and is perfused with grouting material from the inside 1-2.5m in end, two block baffles, 5 plugging grouting material, two pieces of gears are fixed in cored slab
Filled with foamed glue 4 between plate 5；The baffle 5 is circle, and 5 diameter of baffle is equal with the hollow bore dia of cored slab, baffle holes 3
For rectangle, 3 length of baffle holes is equal with the diameter of baffle 5, and 3 width of baffle holes is equal with the thickness of baffle 5.
In structure, it is preferred that baffle 5 is round bamboo slab rubber；Fill orifice 1 is repaired using epoxy resin mortar filling, and gas vent 2 is adopted
Dense packing effect reparation is carried out with grouting material, baffle holes 3 add epoxy concrete to be filled reparation using setting steel mesh；Fill orifice
1, the position with pores no-reinforcing-bar and steel strand wires of gas vent 2 and baffle holes 3；Baffle 5 is fixed on by concreting or reinforcing bar
In cored slab.
Embodiment described above, only one kind of the present invention more preferably specific embodiment, those skilled in the art
The usual variations and alternatives that member carries out within the scope of technical solution of the present invention should be all included within the scope of the present invention.
Claims (5)
1. a kind of city overhead road prestressed cored slab end web inclined crack Disease Processing structure, including cored slab, special
Sign is: the end upper surface of the cored slab successively opens fill orifice (1), gas vent (2) and baffle holes (3), fill orifice (1)
For to being perfused grouting material inside cored slab, whether gas vent (2) is closely knit and exclude in cored slab cavity for detecting grouting
Gas, baffle holes (3) for installing baffle (5), filled out after grouting by fill orifice (1), gas vent (2) and baffle holes (3)
Fill reparation；The cored slab is perfused with grouting material from the inside 1-2.5m in end, and two block baffles (5) are fixed in cored slab and block filling
Slurry, filled with foamed glue (4) between two block baffles (5)；The baffle (5) is circle, baffle (5) diameter and cored slab it is hollow
Bore dia is equal, baffle holes (3) be rectangle, baffle holes (3) length is equal with the diameter of baffle (5), baffle holes (3) width and
The thickness of baffle (5) is equal.
2. city overhead road prestressed cored slab according to claim 1 end web inclined crack Disease Processing structure,
It is characterized by: the baffle (5) is round bamboo slab rubber.
3. city overhead road prestressed cored slab according to claim 1 end web inclined crack Disease Processing structure,
It is characterized by: the fill orifice (1) is repaired using epoxy resin mortar filling, gas vent (2) carries out dense packing effect using grouting material
It repairs, baffle holes (3) add epoxy concrete to be filled reparation using setting steel mesh.
4. city overhead road prestressed cored slab according to claim 1 end web inclined crack Disease Processing structure,
It is characterized by: the position with pores no-reinforcing-bar and steel strand wires of the fill orifice (1), gas vent (2) and baffle holes (3).
5. city overhead road prestressed cored slab according to claim 1 end web inclined crack Disease Processing structure,
It is characterized by: the baffle (5) is fixed in cored slab by concreting or reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920004429.6U CN209555788U (en) | 2019-01-03 | 2019-01-03 | City overhead road prestressed cored slab end web inclined crack Disease Processing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920004429.6U CN209555788U (en) | 2019-01-03 | 2019-01-03 | City overhead road prestressed cored slab end web inclined crack Disease Processing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209555788U true CN209555788U (en) | 2019-10-29 |
Family
ID=68305140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920004429.6U Active CN209555788U (en) | 2019-01-03 | 2019-01-03 | City overhead road prestressed cored slab end web inclined crack Disease Processing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209555788U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653106A (en) * | 2019-01-03 | 2019-04-19 | 济南城建集团有限公司 | City overhead road prestressed cored slab end web inclined crack Disease Processing technology |
| CN114592441A (en) * | 2022-01-28 | 2022-06-07 | 交通运输部公路科学研究所 | Grouting reinforcement structure for improving shear bearing capacity of concrete hollow slab beam end and construction method thereof |
| CN114808761A (en) * | 2022-01-28 | 2022-07-29 | 交通运输部公路科学研究所 | Hollow slab beam end grouting core filling reinforcing structure and reinforcing method |
-
2019
- 2019-01-03 CN CN201920004429.6U patent/CN209555788U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653106A (en) * | 2019-01-03 | 2019-04-19 | 济南城建集团有限公司 | City overhead road prestressed cored slab end web inclined crack Disease Processing technology |
| CN109653106B (en) * | 2019-01-03 | 2023-10-27 | 济南城建集团有限公司 | Oblique crack disease treatment technology for end web plate of prestressed hollow slab of urban overhead road |
| CN114592441A (en) * | 2022-01-28 | 2022-06-07 | 交通运输部公路科学研究所 | Grouting reinforcement structure for improving shear bearing capacity of concrete hollow slab beam end and construction method thereof |
| CN114808761A (en) * | 2022-01-28 | 2022-07-29 | 交通运输部公路科学研究所 | Hollow slab beam end grouting core filling reinforcing structure and reinforcing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209555788U (en) | City overhead road prestressed cored slab end web inclined crack Disease Processing structure | |
| CN103074941B (en) | Assembling regeneration concrete node and the practice of steel bar girder beam are contained in a kind of end | |
| CN205894313U (en) | Prefabricated assembled steel pipe retrains frame node entirely | |
| CN204185755U (en) | A kind of Wavelike steel webplate post-stressed concrete T beam | |
| CN106049691A (en) | Fully-prefabricated assembling type steel tube constraint frame node | |
| CN105200929B (en) | The reinforcement means of single slab bearing beam bridge hoop presstressed reinforcing steel | |
| CN105297641B (en) | Highway T beam diaphragm plate prestressed reinforcement structure and carry out the engineering method reinforced with it | |
| CN102877407B (en) | Concrete continuous box girder of corrugated steel web for curved bridge | |
| CN103924525B (en) | Urban interchange industrialization short-term precast assembly construction method | |
| CN109653106A (en) | City overhead road prestressed cored slab end web inclined crack Disease Processing technology | |
| CN104499608B (en) | The design and construction method of prestressing force section steel reinforcement shear wall | |
| CN103806593A (en) | Precast concrete member | |
| CN103276651A (en) | No-cutting-seam cement concrete pavement structure and construction method thereof | |
| CN109162204B (en) | Construction method for transverse block rapid assembling of bridge substructure | |
| CN203174510U (en) | Movable assembly type hanging basket for bridge anti-collision guardrail construction and formwork for construction | |
| CN103938871B (en) | A kind of construction method adopting the steel core concrete column bonded prestress frame beam structure of reinforced concrete ring beam joint | |
| CN107386246A (en) | A kind of lock chamber wall Construction Through Form on Traveler method | |
| CN105401525B (en) | Cast-in-situ construction method of beam flange plates of acoustic barriers through movable mold base vehicles | |
| CN106193455A (en) | A kind of ultra-high performance concrete cylinder permanent template and preparation method thereof | |
| CN106284103A (en) | Steel reinforced concrete combination beam roof steel bar concrete high-altitude cantilever pouring construction method | |
| CN106337530B (en) | A kind of construction of frame beam seams stifled construction method | |
| CN205934687U (en) | Antinode worker roof beam - steel concrete roof - external prestress combination T type simple beam | |
| CN102767378B (en) | Double-column type tunnel portal method for bent frame construction tunnel | |
| CN109184741B (en) | High bearing capacity shield tunnel section of jurisdiction joint structure | |
| CN104453235B (en) | Current conversion station fire wall construction technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |