CN1740445A - External pre-stress reinforcing structure for common hollow reinforced concrete slab beam - Google Patents
External pre-stress reinforcing structure for common hollow reinforced concrete slab beam Download PDFInfo
- Publication number
- CN1740445A CN1740445A CN 200510103600 CN200510103600A CN1740445A CN 1740445 A CN1740445 A CN 1740445A CN 200510103600 CN200510103600 CN 200510103600 CN 200510103600 A CN200510103600 A CN 200510103600A CN 1740445 A CN1740445 A CN 1740445A
- Authority
- CN
- China
- Prior art keywords
- plate
- baffle plate
- slab beam
- liner plate
- reinforcing structure
- 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.)
- Pending
Links
- 230000003014 reinforcing effect Effects 0.000 title abstract description 5
- 239000011150 reinforced concrete Substances 0.000 title abstract 2
- 239000004567 concrete Substances 0.000 claims abstract description 21
- 238000005728 strengthening Methods 0.000 claims description 9
- 210000003205 muscle Anatomy 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to external pre-stress reinforcing structure for common hollow reinforced concrete slab beam. The external pre-stress reinforcing structure includes baffles and lining boards, which are connected to the inside of the baffles to support the baffles, welded symmetrically to the end main ribs of the hollow slab beam bottom plate; drawing parts between the baffles on two ends; and cast concrete around the baffles and lining boards. The reinforcing structure can raise the strength and the rigidity of the hollow slab beam, improve crack index and raise the bearing capacity of the bridge by 30-45 %.
Description
Technical field
The present invention relates to a kind of reinforcing technique of plain bars concrete hollow board beam, specifically, relate to a kind of external prestressing strengthening structure of plain bars concrete hollow board beam.
Background technology
For the plain bars concrete hollow board beam in the present bridge construction, there is the hypodynamic phenomenon of carrying in larger proportion, makes the strength and stiffness of bridge main beam not reach designing requirement.
Summary of the invention
The purpose of this invention is to provide a kind of bearing capacity that can improve plain bars concrete hollow board beam, and the external prestressing strengthening structure of the plain bars concrete hollow board beam of strength and stiffness.
The present invention is achieved in that a kind of external prestressing strengthening structure of plain bars concrete hollow board beam, is symmetrically welded with baffle plate and the liner plate that is used for supporting baffle at place, hollow slab beam base plate master muscle two ends; Liner plate is positioned at the inboard of baffle plate and is connected with baffle plate, is provided with drawing piece between two side shields, is cast with concrete around baffle plate and liner plate.
Described liner plate can be at least two right-angled triangle steel plates, and a right-angle side of each liner plate is connected with plate washer, and another right-angle side is connected with the base plate master muscle of bridge main beam.Described drawing piece can comprise ground tackle and prestress wire, and described ground tackle is located at the outside of baffle plate, and described prestress wire passes two side shields respectively and is connected with described ground tackle.
The invention has the beneficial effects as follows: the tensile strength that has improved the hollow slab beam base plate, thereby improved the strength and stiffness of integrated hollow plate beam, improved the crack index, improved the bearing capacity of bridge, evidence, this ruggedized construction can improve bridge capacity and reach 30%～45%.
Description of drawings
Fig. 1 is a cross-sectional view of the present invention;
Fig. 2 is an A-A sectional drawing of the present invention.
1. hollow slab beams, 2. baffle plates, 3. liner plates, 4. ground tackles, 5. prestress wires among the figure
6. high-grade concrete 7. base plate master muscle
The specific embodiment
Referring to Fig. 1, Fig. 2, the external prestressing strengthening structure of plain bars concrete hollow board beam of the present invention is the liner plate 3 that is symmetrically welded with baffle plate 2 at place, hollow slab beam 1 base plate master muscle 7 two ends and is used for supporting baffle 2; Liner plate 3 is positioned at the inboard of baffle plate 2 and is connected with baffle plate 2, is provided with drawing piece between two side shields 2, is cast with concrete 6 around baffle plate 2 and liner plate 3, and this pour concrete 6 is preferably high-grade concrete, to guarantee tensile strength.
Described liner plate 3 is at least two right-angled triangle steel plates, the quantity of liner plate 3 can be determined according to the width of hollow slab beam 1 and the quantity of base plate master muscle 7, a right-angle side of each liner plate 3 is connected with plate washer 2, and another right-angle side is connected with the base plate master muscle 7 of hollow slab beam 1; Described liner plate 3 also can be the steel plate of diagonal brace baffle plate 2, is provided with the hole of passing for drawing piece on steel plate.Described drawing piece comprises ground tackle 4 and prestress wire 5, and described ground tackle 4 is located at the outside of baffle plate 2, and described prestress wire 5 passes two side shields 3 respectively and is connected with described ground tackle 4; Described drawing piece also can be the cold-drawn bar and the fixing fixture of cold-drawn bar.
Describe the present invention with way of example above, but the invention is not restricted to above-mentioned specific embodiment, all protection domains that any improvement that the present invention did or modification are all belonged to claim of the present invention.
Claims (4)
1. the external prestressing strengthening structure of a plain bars concrete hollow board beam is characterized in that: be symmetrically welded with baffle plate (2) at place, hollow slab beam (1) base plate master muscle (7) two ends and be used for the liner plate (3) of supporting baffle (2); Liner plate (3) is positioned at the inboard of baffle plate (2) and is connected with baffle plate (2), is provided with drawing piece between two side shields (2), is cast with concrete (6) on every side at baffle plate (2) and liner plate (3).
2. the external prestressing strengthening structure of plain bars concrete hollow board beam according to claim 1, it is characterized in that: described liner plate (3) is at least two right-angled triangle steel plates, a right-angle side of each liner plate (3) is connected with plate washer (2), and another right-angle side is connected with the base plate master muscle of hollow slab beam (1).
3. the external prestressing strengthening structure of plain bars concrete hollow board beam according to claim 1 and 2, it is characterized in that: described drawing piece comprises ground tackle (4) and prestress wire (5), described ground tackle (4) is located at the outside of baffle plate (2), and described prestress wire (5) passes two side shields (3) respectively and is connected with described ground tackle (4).
4. the external prestressing strengthening structure of plain bars concrete hollow board beam according to claim 1 is characterized in that: the concrete of pouring into a mould on every side at described baffle plate (2) and liner plate (3) (6) is a high-grade concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510103600 CN1740445A (en) | 2005-09-23 | 2005-09-23 | External pre-stress reinforcing structure for common hollow reinforced concrete slab beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510103600 CN1740445A (en) | 2005-09-23 | 2005-09-23 | External pre-stress reinforcing structure for common hollow reinforced concrete slab beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1740445A true CN1740445A (en) | 2006-03-01 |
Family
ID=36092965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510103600 Pending CN1740445A (en) | 2005-09-23 | 2005-09-23 | External pre-stress reinforcing structure for common hollow reinforced concrete slab beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1740445A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455726C (en) * | 2006-04-12 | 2009-01-28 | 四川省交通厅公路规划勘察设计研究院 | Method for reinforcing integral cast-in-situ concrete beam bridge and slab bridge by prestress |
| CN101838971B (en) * | 2009-03-17 | 2012-05-23 | 上海建泰预应力工程有限公司 | Construction method for carrying out external prestressing strengthening on bridge by transverse tensioning method |
| CN102913028A (en) * | 2012-02-01 | 2013-02-06 | 于天庆 | Concrete telegraph pole and other prefabricated concrete components capable of being easily carried and locally assembled with prestressing force |
| CN104328747A (en) * | 2013-07-23 | 2015-02-04 | 金辉 | Reinforcement method for single beam bearing of bridge and construction method thereof |
| CN105421813A (en) * | 2015-12-07 | 2016-03-23 | 中国建筑第八工程局有限公司 | External prestressing reinforcing method for concrete truss |
| CN105484171A (en) * | 2015-12-16 | 2016-04-13 | 中铁二十五局集团第三工程有限公司 | Prestress strengthening method for external cables of bridges and culverts of prefabricated frames in gradient change jacking process |
| CN108103962A (en) * | 2017-12-25 | 2018-06-01 | 河海大学 | A kind of bracing means and its construction method of concrete-bridge crackle |
| CN111101434A (en) * | 2019-12-31 | 2020-05-05 | 中铁二院工程集团有限责任公司 | Cable-stayed bridge with tensioned midspan girder |
-
2005
- 2005-09-23 CN CN 200510103600 patent/CN1740445A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455726C (en) * | 2006-04-12 | 2009-01-28 | 四川省交通厅公路规划勘察设计研究院 | Method for reinforcing integral cast-in-situ concrete beam bridge and slab bridge by prestress |
| CN101838971B (en) * | 2009-03-17 | 2012-05-23 | 上海建泰预应力工程有限公司 | Construction method for carrying out external prestressing strengthening on bridge by transverse tensioning method |
| CN102913028A (en) * | 2012-02-01 | 2013-02-06 | 于天庆 | Concrete telegraph pole and other prefabricated concrete components capable of being easily carried and locally assembled with prestressing force |
| CN102913028B (en) * | 2012-02-01 | 2016-01-27 | 于天庆 | A kind of concrete electric pole and other prefabricated concrete elements gently can taking prestressing force assembling on the spot |
| CN104328747A (en) * | 2013-07-23 | 2015-02-04 | 金辉 | Reinforcement method for single beam bearing of bridge and construction method thereof |
| CN105421813A (en) * | 2015-12-07 | 2016-03-23 | 中国建筑第八工程局有限公司 | External prestressing reinforcing method for concrete truss |
| CN105484171A (en) * | 2015-12-16 | 2016-04-13 | 中铁二十五局集团第三工程有限公司 | Prestress strengthening method for external cables of bridges and culverts of prefabricated frames in gradient change jacking process |
| CN108103962A (en) * | 2017-12-25 | 2018-06-01 | 河海大学 | A kind of bracing means and its construction method of concrete-bridge crackle |
| CN111101434A (en) * | 2019-12-31 | 2020-05-05 | 中铁二院工程集团有限责任公司 | Cable-stayed bridge with tensioned midspan girder |
| CN111101434B (en) * | 2019-12-31 | 2022-01-04 | 中铁二院工程集团有限责任公司 | Cable-stayed bridge with tensioned midspan girder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102016195A (en) | Drop panel structure of lattice-form and construction method thereof | |
| CN1740445A (en) | External pre-stress reinforcing structure for common hollow reinforced concrete slab beam | |
| KR100728106B1 (en) | Cantilevered part installation structure and construction method of bridge deck | |
| CN110241959A (en) | A kind of laminated board and its construction method | |
| CN101122118B (en) | Method for reinforcing and modifying through steel truss bridge | |
| CN105804317A (en) | Construction beam structure | |
| CN214557029U (en) | Prefabricated bed-jig device of overpass beam pier column steel reinforcement cage | |
| KR20100089180A (en) | Composite girder used steel-concrete | |
| CN211775065U (en) | Steel beam-prestressed concrete combined composite slab | |
| JP4204388B2 (en) | PC box girder bridge | |
| KR102009704B1 (en) | Steel permanent landfill form using upper flange box compound gider and construction method using the same | |
| KR20120009521A (en) | H sleepers for railroading | |
| CN209958341U (en) | Special-shaped support pile | |
| CN2613511Y (en) | External prestressed reinforced structure for normal reinforced concrete hollow slab beam | |
| CN214061288U (en) | Bearing box girder template | |
| CN110725476B (en) | Reinforcing steel bar layer located at external corner | |
| KR100310301B1 (en) | Leaf-restrest box girder composite bridge | |
| CN210562911U (en) | Steel bar truss floor board that security performance is high | |
| CN2303037Y (en) | Built-in reinforced concrete support with dark semi-through joint and frame seismic wall | |
| CN205591427U (en) | Construction girder construction | |
| CN215977986U (en) | Floor precast slab, prefabricated floor's mosaic structure and mounting structure | |
| KR100514405B1 (en) | Preflex continuous steel girder | |
| CN1028784C (en) | Steel wire net concrete cross bridge floor board | |
| CN216689095U (en) | Bridge fiber reinforced structure | |
| CN217078380U (en) | Bridge structure support with anti deformability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |