CN103243662B - Reconstruction and reinforcement method for existing railroad bridge - Google Patents
Reconstruction and reinforcement method for existing railroad bridge Download PDFInfo
- Publication number
- CN103243662B CN103243662B CN201310203305.8A CN201310203305A CN103243662B CN 103243662 B CN103243662 B CN 103243662B CN 201310203305 A CN201310203305 A CN 201310203305A CN 103243662 B CN103243662 B CN 103243662B
- Authority
- CN
- China
- Prior art keywords
- shaped
- iron
- bridge pier
- limit devices
- beams
- 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 invention relates to the field of bridge engineering, in particular to a reconstruction and reinforcement method for an existing railroad bridge. The reconstruction and reinforcement method is characterized by at least including the steps: respectively adding transverse limit devices on the outer sides of the bottoms of T-shaped beams and two sides of the top surface of a bridge pier; and arranging a plurality of horizontal connecting plates below transverse partition plates on the inner sides of the two T-shaped beams, arranging a plurality of horizontal connecting plates on the inner sides of the bottoms of the two T-shaped beams, and integrally connecting the two T-shaped beams through the horizontal connecting plates. The reconstruction and reinforcement method has the advantages that reinforcement effects are obvious and can meet acceleration design requirements, the process is simple, construction period is short, and normal traffic of the existing bridge cannot be affected.
Description
Technical field
The present invention relates to bridge engineering field, be specifically related to a kind of transformation reinforcement means of Existing Railway Bridges.
Background technology
According to the relevant regulations in " newly-built Speed 200 km/h mixed passenger and freight railway design temporary provisions " and " Line of Existing Railway 200km/h technical condition ", speed-raising design is carried out to existing bridge, the problem now brought is that exist curves is owing to building the problem of the time limit, the intensity that its intensity is required after cannot reaching speed-raising design.
The reinforcement means of current general bridge has twin beams transversely strengthening method, Strengthened By Cfrp Sheet method, if but needed for twin beams transversely strengthening method the transformation time longer and need span centre and two ends all to need processing owing to needing to obtain good consolidation effect, increase cost further; The intensity effect that Strengthened By Cfrp Sheet method increases is limited, and easily causes damage, needs often to safeguard, so respectively have shortcoming.
Summary of the invention
The object of the invention is according to above-mentioned the deficiencies in the prior art part, a kind of transformation reinforcement means and supporting arrangement thereof of Existing Railway Bridges are provided, the method is used in bridge pier and T-shaped beam beam body both sides increase horizontal limit devices, and the method that T-shaped beam beam body is connected is reinforced, realize the reinforcing of Existing Railway Bridges, to meet the speed-raising designing requirement to Existing Railway Bridges.
The object of the invention realizes being completed by following technical scheme:
A kind of transformation reinforcement means of Existing Railway Bridges, described exist curves comprises bridge pier, two T-shaped beams, described T-shaped beam at least comprises web and diaphragm, and described diaphragm and described web homonymy are arranged, and it is characterized in that: described method at least comprises the following steps:
(a) at the bottom of described T-shaped beam beam outside and bridge pier end face both sides increase horizontal limit devices respectively;
B () arranges some horizontal connecting plates below described diaphragm inside described two T-shaped beams, arrange some horizontal connecting plates inside at the bottom of described two T-shaped beam beams, described two T-shaped beams are connected by described horizontal connecting plate.
Described horizontal limit devices is arranged on described bridge pier outer top surface, described horizontal limit devices comprises at least two confined planes, a described confined planes supports the sidewall of described bridge pier, lateral wall at the bottom of the described T-shaped beam beam of confined planes supporting described in another, and be provided with an elastic support between this confined planes and described T-shaped beam.
Described horizontal limit devices is made up of shaped steel, i iron, elastic support, the one side of described shaped steel supports the sidewall of described beam body by described elastic support, the another side of described shaped steel and a described i iron are vertical welding, the sidewall of bridge pier described in the side support of this i iron.
The splice point of described shaped steel and described i iron is outwards welded with a diagonal brace at a certain angle, and the other end of described diagonal brace is fixedly connected with ground, and is provided with some reinforcing ribs in the angle of described i iron and described diagonal brace.
Layer of concrete is surrounded by outside described horizontal limit devices.
Advantage of the present invention is: consolidation effect obviously can reach the requirement of speed-raising design; Technique is simple, and the construction period is shorter, does not affect the normal pass of exist curves.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention transforms exist curves;
Fig. 2 is the lateral view of Fig. 1.
Detailed description of the invention
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that the understanding of technician of the same trade:
As shown in Figure 1-2, mark 1-14 in figure to be respectively: T-shaped beam 1, bearing 2, bridge pier 3, neoprene bearing 4, shaped steel 5, i iron 6, i iron 7, top cap 8, beam-ends 9, diaphragm 10, reinforcing bar 11, level board 12, horizontal limit devices 13, concrete-shell 14.
Embodiment: as shown in Figure 1, the present embodiment adopts and transforms beam 1 T-shaped in exist curves, these two crossstructures of bridge pier 3, to reinforce exist curves and to make it meet the intensity needs of speed-raising design.
As shown in Figure 1, 2, exist curves structure has following description: two T-shaped beams 1 be arranged in parallel along its long axis direction, and the bridge pier 3 that each T-shaped beam 1 is arranged by below supports, and is provided with bearing 2 between T-shaped beam 1 and bridge pier 3, in order to eliminate its vertical direction stress.Bridge pier 3 is supported on the cap 8 of top.The vertical axis of above-mentioned T-shaped beam 1, bearing 2, bridge pier 3 three overlaps, to play the most stable support effects.
As shown in Figure 1, 2, the strengthening reconstruction method of the present embodiment to T-shaped beam 1 is as follows:
(1) inside beam-ends 9 web, upper and lower twice level board 12 is set up, to improve its affixed stability.
(2) between beam-ends 9 dividing plate and first piece of diaphragm 10, in the middle of web, one block of level board 12 is set up.
(3) second, third block diaphragm 10 from beam-ends is thickeied.
(4) above span centre and the diaphragm 10 adjacent with span centre, horizontal connecting plate is set up.
Said method is all to two of lateral arrangement T-shaped beams 1 be linked into an integrated entity and reinforced, making its lateral stress stablize, and is not easy the impact of the driving after being raised speed.
As shown in Figure 1, 2, the present embodiment is in T-shaped beam 1 bottom, cap 8 top, top erection horizontal limit devices 13, this horizontal limit devices 13 includes two bearing surfaces, two bearing surfaces prop up the sidewall of bearing T shaped beam 1 and the sidewall of bridge pier 3 respectively, to eliminate the horizontal direction stress of two T-shaped beams 1, bridge pier 3, improve consolidation effect.
Horizontal limit devices 13 is made up of neoprene bearing 4, shaped steel 5, i iron 6, i iron 7, reinforcing bar 11, shaped steel 5 is arranged at side-wall outer side bottom T-shaped beam 1, one sidewall of this shaped steel 5 is bearing surface, in order to a bearing T shaped beam 1, between shaped steel 5 and T-shaped beam 1, be provided with neoprene bearing 4.Neoprene bearing 4 is the one in elastic support herein, and those skilled in the art can select according to the size of stress and scope.One sidewall of shaped steel 5 is bearing surface, and its relative sidewall is welded with i iron 6, and shaped steel 5 is rectangular with i iron 6 angle, and the other end of i iron 6 is embedded in cap 8 inside, top, and a sidewall of this i iron 6 props up the sidewall of bearing T shaped beam 1 as bearing surface.The pad place extra soldered of shaped steel 5 and i iron 6 has the i iron 7 as hound, and i iron 7 and i iron 6 are arranged in an angle and the other end of i iron 7 is also embedded in and pushes up cap 8 inside.Additionally it should be noted that: between i iron 6 and i iron 7, be provided with some horizontal reinforcements 11 as reinforcing rib, to improve the stability of horizontal limit devices 13 herein.This bracing or strutting arrangement 13 has a concrete-shell 14, and namely bracing or strutting arrangement 13 is positioned at concrete-shell 14 inside, and the surface of concrete-shell 14 is as bearing surface bearing T shaped beam 1 or bridge pier 3.
This enforcement is in the specific implementation: the reinforcing of bridge pier 3 also can be adopted and be reinforced with the following method:
Existing bridge pier, by bar planting external wrapping concrete, is still circle pier after reinforcing.Reinforce height from basic end face to along connecing both at the bottom of crown cap; Each pier both lateral sides symmetry respectively adds 1, adds 2 piles altogether, and stake footpath is all with existing stake, and the long and existing stake of stake matches.The cushion cap of bridge pier 3 is strengthened, thickeies process simultaneously.
Concrete-shell 14 is steel reinforced concrete, strength grade of concrete C50.
I iron 6 adopts model 20a i iron, and column and diagonal brace are two i iron and weld side by side, and i iron 7 and i iron 6 need be welded to connect, and i iron 6 top outer is welded with the shaped steel 5 of 200 × 150 × 6 × 8mm, and each weld bead height is not less than 5mm.I iron 6 and i iron 7 bottom are imbedded and are pushed up cap 8, and buried depth is as many as 20cm.
Concrete-shell 14 outside shaped steel 5 adopts GJZ laminated rubber bearing 4 to add steel plate jam-pack with the sideshake of T-shaped beam 1, and neoprene bearing 4 segment thickness potting is in concrete.
I iron floor is welded with U-shaped reinforcing bar ten, to increase the bond effect between shaped steel 5 and concrete-shell 14.
Claims (4)
1. the transformation reinforcement means of an Existing Railway Bridges, described exist curves comprises bridge pier, two T-shaped beams, described T-shaped beam at least comprises web and diaphragm, and described diaphragm and described web homonymy are arranged, and it is characterized in that: described method at least comprises the following steps:
(a) at the bottom of described T-shaped beam beam outside and bridge pier end face both sides increase horizontal limit devices respectively, described horizontal limit devices is arranged on described bridge pier outer top surface, described horizontal limit devices comprises at least two confined planes, a described confined planes supports the sidewall of described bridge pier, lateral wall at the bottom of the described T-shaped beam beam of confined planes supporting described in another, and be provided with an elastic support between this confined planes and described T-shaped beam;
B () arranges some horizontal connecting plates below described diaphragm inside described two T-shaped beams, arrange some horizontal connecting plates inside at the bottom of described two T-shaped beam beams, described two T-shaped beams are connected by described horizontal connecting plate.
2. the transformation reinforcement means of a kind of Existing Railway Bridges according to claim 1, it is characterized in that: described horizontal limit devices is made up of shaped steel, i iron, elastic support, the one side of described shaped steel supports the sidewall of described beam body by described elastic support, the another side of described shaped steel and a described i iron are vertical welding, the sidewall of bridge pier described in the side support of this i iron.
3. the transformation reinforcement means of a kind of Existing Railway Bridges according to claim 2, it is characterized in that: the splice point of described shaped steel and described i iron is outwards welded with a diagonal brace at a certain angle, the other end of described diagonal brace is fixedly connected with ground, and is provided with some reinforcing ribs in the angle of described i iron and described diagonal brace.
4. the transformation reinforcement means of a kind of Existing Railway Bridges according to Claims 2 or 3, is characterized in that: be surrounded by layer of concrete outside described horizontal limit devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310203305.8A CN103243662B (en) | 2013-05-28 | 2013-05-28 | Reconstruction and reinforcement method for existing railroad bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310203305.8A CN103243662B (en) | 2013-05-28 | 2013-05-28 | Reconstruction and reinforcement method for existing railroad bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103243662A CN103243662A (en) | 2013-08-14 |
| CN103243662B true CN103243662B (en) | 2015-05-20 |
Family
ID=48923514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310203305.8A Active CN103243662B (en) | 2013-05-28 | 2013-05-28 | Reconstruction and reinforcement method for existing railroad bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103243662B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988853B (en) * | 2015-05-26 | 2016-09-07 | 上海同罡建筑工程有限公司 | Bearing replacement method for maintaining |
| CN114687273A (en) * | 2022-02-25 | 2022-07-01 | 中铁十八局集团有限公司 | Bridge structure with U-shaped beam and construction method thereof |
| CN114808765A (en) * | 2022-05-09 | 2022-07-29 | 中铁城建集团第三工程有限公司 | Construction method for transversely reinforcing existing railway bridge simply-supported double T-shaped beams |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2742675B2 (en) * | 1996-02-29 | 1998-04-22 | 株式会社ホーク | Repair and reinforcement methods for prestressed concrete structures |
| JPH108422A (en) * | 1996-06-19 | 1998-01-13 | Harumoto Tekko:Kk | Reinforcement structure of bridge pier |
| CN101265690B (en) * | 2007-10-08 | 2012-03-14 | 中铁四局集团有限公司 | Method for protectively dismantling arch bridge |
| CN102535357B (en) * | 2012-02-21 | 2015-04-08 | 中南大学 | Method for strengthening double-T bridge composite structure for railway |
-
2013
- 2013-05-28 CN CN201310203305.8A patent/CN103243662B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103243662A (en) | 2013-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103215894B (en) | Portable interim prestressed stretch-draw anchor block | |
| CN206538637U (en) | A kind of track strengthening device for existing railway | |
| CN103938534B (en) | Elevated rail hands over the integrated bridge structure in station and its application process | |
| CN101701439A (en) | Steel reinforcement cage track skeleton method construction process of steel spring floating plate track | |
| CN204715224U (en) | A kind of case beam reinforcing construction based on i iron diaphragm | |
| CN106978777B (en) | A kind of make-shift bridge device | |
| CN103061242A (en) | Sound-barrier simply-supported T-beam bridge | |
| CN202954299U (en) | Template support structure for large-angle V-shaped pier and No.0 block of continuous rigid framework bridge | |
| CN206941325U (en) | The newly-built peg board formula roadbed of girder construction system in length and breadth | |
| CN203270461U (en) | Bailey beam support without buttress in soft foundation | |
| CN110258221A (en) | A kind of box frame roadbed | |
| CN103243662B (en) | Reconstruction and reinforcement method for existing railroad bridge | |
| CN110777685B (en) | Bridge-building hybrid overhead station structure adopting energy dissipation and shock absorption connection | |
| CN108149577B (en) | A kind of steel bracket system and its installation method | |
| CN103966947A (en) | Beam-falling-resistant device based on bridge beam shock absorption | |
| CN109930469B (en) | Steel box girder thin-wall pier rigid frame cable-stayed bridge suitable for straddle type monorail | |
| KR100876679B1 (en) | Bridge soundproof structure and method of executing the same | |
| CN204126655U (en) | The anti-electric lining trolley of double track tunnel newly-built hangar tunnel lining construction | |
| CN203741733U (en) | Large-tonnage multi-pile-foundation wholly-active underpinning structure for bridge | |
| CN211285316U (en) | Adopt hybrid elevated station structure of bridge construction of energy dissipation shock attenuation connection | |
| CN203958138U (en) | Utilize the overhead railway that headroom is built at the bottom of overpass | |
| KR101187282B1 (en) | Railway bridge constructing method using 2 post type abutment structure | |
| CN209584813U (en) | Frame bridge system | |
| CN203145273U (en) | Dismountable steel-concrete composite floor | |
| CN215104790U (en) | Reinforced structure for existing railway underpass frame bridge construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |