CN202925457U - T-shaped bent cap and restrain block - Google Patents
T-shaped bent cap and restrain block Download PDFInfo
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- CN202925457U CN202925457U CN 201220318789 CN201220318789U CN202925457U CN 202925457 U CN202925457 U CN 202925457U CN 201220318789 CN201220318789 CN 201220318789 CN 201220318789 U CN201220318789 U CN 201220318789U CN 202925457 U CN202925457 U CN 202925457U
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- bent cap
- girder plate
- block
- girder
- reinforcement
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Abstract
Provided are a T-shaped bent cap and a restrain block. The T-shaped bent cap and the restrain block are characterized in that when a transverse reinforcement of a bent cap is manufactured, the width of the upper end reinforcement of the bent cap is bigger by 20cm to 40cm than that of the lower end of the bent cap, and the T-shaped bent cap is formed. When a longitudinal reinforcement of the bent cap is manufactured, a plurality of reinforcement heads are longitudinally reserved at the top end of the bent cap according to the width dimension of a girder plate, and after each girder plate is installed, stop block reinforcement manufacture is carried out to the reinforcement heads reserved at the top end of the bent cap of the girder plate, a stop block is enabled to form cubic reinforced concrete, a clearance is reserved between the reinforced concrete stop block and the end of the girder plate, and a rubber buffer mat is inserted into the clearance. In a bridge design construction process, the T-shaped bent cap is adopted, the adequate seated length of a girder is increased under the condition that the engineering number of the T-shaped bent cap is not increased, the restrain blocks are arranged on two sides of the girder, and when the a bridge is impacted by seismic waves, the girder plate can swing along with the transverse swinging of piers, and the advantage of effectively preventing the transverse dropping of the girder plate is achieved.
Description
Technical field
The present utility model relates to the guardian technique of striding greatly footpath, high pier Bridge Earthquake Resistance Design, exactly is a kind of when earthquake occurs, T-shaped bent cap and anti-knock block that prevention girder plate comes off.
Background technology
According to data analysis, in 5.12 earthquakes of Wenchuan generation in 2008, if bridge main is impaired because of two reasons.The one, the destruction that is caused by foundation failure, the 2nd, the destruction that the bridge construction sharp pounding causes.According to above-mentioned situation, the expert provides the principle that the earthquake-stricken area bridge recovers and rebuilds.At first, when selection of site for bridge, avoid active fault as far as possible and close on the location, avoid jeopardizing bridge structure safe, might come down or the avalanche location, avoid the soft layer location that to liquefy.Secondly, adopt as far as possible globality and the good bridge construction of systematicness at high intensity Zone, good integrity can prevent that structural element and non-structural element from being dissipated by shake when earthquake.The layout of structure will be made every effort to even, the symmetry, regular of physical dimension, quality and rigidity, avoids unexpected variation.From geometry linear, select the straight line bridge as far as possible.The straight line bridge is the simplest, and the geometry of Curved Beam Bridge is irregular, affects its earthquake response.
At present, the refined Lu of being open to the traffic in the Sichuan Province (speedway of Yaan-Lu Gu), route is located in the compound position in famous north, the southern regions of the Yunnan Province, the river tectonic system north section of China and the remote Indonesia in Yunnan, river, Qinghai-Tibet zeta-type structure system stage casing, belong to simultaneously the South-north Seismic Zone In China stage casing, buckle folding and active fault are numerous in the zone, be one of the main orogenic belt of China and earthquake zone, wherein mostly be active fault.For speedway, active fault is very unreasonable.It can constantly change rock mass geostatic stress condition, makes rock mass geostatic stress size and Orientation all become very complicated, and constantly deepens to strengthen the joints development degree, make rock mass more broken be easy to weathering.Active fault makes and stores increasing seismic strain energy in the rock mass, and strain energy discharges behind slope excavation, can strengthen slope deforming and unstability.Particularly several active fault effects superpose mutually, and geostatic stress will be more complicated.Therefore, in the active fault area, seismic force effects is fairly obvious, and geological disaster is frequent and scale is large, and side slope and foundation stability are poor, often to Expressway Road, bridge and constructing tunnel, and later stage operation management harm.
In order to improve the quake-resistant safety coefficient of bridge, (Yaan-Lu Gu) builders of speedway have set under the different earthquake earthquake intensity scope of application of different bridge pier height in refined Lu; To the easy girder plate that comes off from bent cap, adopt the technological means of a lot of innovations especially, strengthened the connection of binding site, effectively captured the technical barrier that bridge can be prevented and reduced natural disasters.
Summary of the invention
The purpose of the present utility model is: a kind of T-shaped bent cap and anti-knock block are provided, it is the innovative technology of a kind of " flower stiver; anti-great trouble " during numerous bridges are prevented and reduced natural disasters, during bridge design is built, adopt T-shaped bent cap, in the situation that does not increase T-shaped bent cap engineering quantity, increased the girder shelving length, in the girder both sides anti-knock block is set, when bridge is met the seismic wave impact, the girder plate can swing along with the teeter of bridge pier, reaches the purpose that effective prevention girder plate laterally comes off.
The purpose of the present utility model realizes by implementing following technical proposals:
T-shaped bent cap and anti-knock block, it is characterized in that: when making bent cap transversary reinforcing bar, on the bent cap end bar width greater than bent cap lower end width 20-40 centimetre, carry out concreting after, make the bent cap top margin laterally wide than the horizontal wide 20-40 in bent cap base centimetre, form T-shaped bent cap; When making the reinforcing bar in the bent cap vertical structure, vertically reserve the many places steel bar end according to girder plate width dimensions on the bent cap top, after whenever finishing the installation of a slice girder plate, the steel bar end that its bent cap top is reserved carries out the block reinforcement fabrication, make block form a cubical steel concrete, described steel concrete block is shelved on part on the bent cap near girder plate termination; Between described steel concrete block and girder plate termination, be reserved with the slit, between the slit, insert rubber buffer.
The utility model has the advantages that: a kind of T-shaped bent cap and anti-knock block are provided, be the innovative technology of a kind of " flower stiver; anti-great trouble " during numerous bridges are prevented and reduced natural disasters, bridge design adopts T-shaped bent cap in building, in the situation that does not increase T-shaped bent cap engineering quantity, increased the girder shelving length, in the girder both sides anti-knock block has been set, when bridge is met the seismic wave impact, the girder plate can swing along with the teeter of bridge pier, realizes the advantage of effectively preventing the girder plate laterally to come off.
Description of drawings
Fig. 1 is the utility model bent cap transversary view;
Fig. 2 is the steel bar end view that the utility model bent cap is vertically reserved;
Fig. 3 is after the vertical girder plate of the utility model bent cap is installed and the anti-knock block topology view.
Mark among the figure: 1 is the bent cap transversary, 2 be the bent cap top margin laterally wide 3 be the bent cap vertical structure than the horizontal wide 20-40 in bent cap base centimetre, 4 steel bar ends for the reservation of bent cap top, 5 is the steel concrete block, 6 is rubber buffer, 7 is the girder plate.
The specific embodiment
Embodiment: T-shaped bent cap and anti-knock block
It is characterized in that: when making bent cap transversary 1 reinforcing bar, on the bent cap end bar width greater than bent cap lower end width 20-40 centimetre, carry out concreting after, make the bent cap top margin laterally wide than the horizontal wide 20-40 in bent cap base centimetres 2, form T-shaped bent cap; When making the reinforcing bar in the bent cap vertical structure 3, vertically reserve the many places steel bar end according to girder plate width dimensions on the bent cap top, after whenever finishing 7 installations of a slice girder plate, the steel bar end 4 that its bent cap top is reserved carries out the block reinforcement fabrication, make block form a cubical steel concrete, described steel concrete block 5 is shelved on part on the bent cap near girder plate 7 terminations; Between described steel concrete block 5 and girder plate 7 terminations, be reserved with the slit, between the slit, insert rubber buffer 6.
Claims (1)
1.T type bent cap and anti-knock block is characterized in that: when making bent cap transversary (1) reinforcing bar, the end bar width forms T-shaped bent cap greater than bent cap lower end width 20-40 centimetre on the bent cap; When making the reinforcing bar in the bent cap vertical structure (3), vertically reserve the many places steel bar end according to girder plate width dimensions on the bent cap top, after whenever finishing a slice girder plate (7) installation, the steel bar end (4) that its bent cap top is reserved carries out the block reinforcement fabrication, make block form a cubical steel concrete, described steel concrete block (5) is shelved on part on the bent cap near girder plate (7) termination; Between described steel concrete block (5) and girder plate (7) termination, be reserved with the slit, between the slit, insert rubber buffer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220318789 CN202925457U (en) | 2012-07-04 | 2012-07-04 | T-shaped bent cap and restrain block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220318789 CN202925457U (en) | 2012-07-04 | 2012-07-04 | T-shaped bent cap and restrain block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202925457U true CN202925457U (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220318789 Expired - Fee Related CN202925457U (en) | 2012-07-04 | 2012-07-04 | T-shaped bent cap and restrain block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202925457U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758780A (en) * | 2017-01-22 | 2017-05-31 | 重庆交通大学 | Position limiting structure in earthquake decline beam is prevented based on damper |
| CN106801378A (en) * | 2017-01-22 | 2017-06-06 | 重庆交通大学 | Position limiting structure based on external prestressing girder falling under geological process |
-
2012
- 2012-07-04 CN CN 201220318789 patent/CN202925457U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758780A (en) * | 2017-01-22 | 2017-05-31 | 重庆交通大学 | Position limiting structure in earthquake decline beam is prevented based on damper |
| CN106801378A (en) * | 2017-01-22 | 2017-06-06 | 重庆交通大学 | Position limiting structure based on external prestressing girder falling under geological process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20150704 |
|
| EXPY | Termination of patent right or utility model |