CN102677584B - Mounting structure of abutment butt strap - Google Patents
Mounting structure of abutment butt strap Download PDFInfo
- Publication number
- CN102677584B CN102677584B CN201210175833.2A CN201210175833A CN102677584B CN 102677584 B CN102677584 B CN 102677584B CN 201210175833 A CN201210175833 A CN 201210175833A CN 102677584 B CN102677584 B CN 102677584B
- Authority
- CN
- China
- Prior art keywords
- attachment strap
- optical member
- sleeper beam
- abutment
- supporting optical
- 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.)
- Expired - Fee Related
Links
Abstract
The invention discloses a mounting structure of an abutment butt strap. The mounting structure comprises a butt strap and a sleeper beam, wherein one end of the butt strap is built on an abutment, and is connected with a beam body of a bridge; the sleeper beam is paved below the other end of the butt strap; an elastic strutting piece is arranged between the butt strap and the sleeper beam; mutually corresponding vertical through holes are respectively formed in the elastic strutting piece and the butt strap; a pre-tightening threaded hanger rod is penetrated through the vertical through holes; the lower end of the pre-tightening threaded hanger rod is fixed on the sleeper beam, and the upper end of the pre-tightening threaded hanger rod is matched with threads of an adjusting nut; and the compression amount of the elastic strutting piece is adjusted by adjusting the pre-tightening force between the threaded hanger rod and the adjusting nut, so that the elevation of the butt strap is adjusted. The butt strap is pre-pressed to realize the adjustability of the elevation of the butt strap, so that the adaptability to settlement deformation of a foundation is strong, the joint between a bridge surface and a guide road surface are flat, and the bumping of the abutment can be prevented and controlled.
Description
Technical field
The invention belongs to the building of bridge, package technique field, be specifically related to a kind of mounting structure of abutment attachment strap, owing to having realized the adjustability of attachment strap absolute altitude, be specially adapted in attachment strap, apply after the platform of the bridge on soft foundation.
Background technology
In bridge defect, because bridge approach high fill produces differential settlement, cause many bridge floors pleasantly smooth not with the road surface joining place of leading the way, thereby while making vehicle cross end of the bridge, produce and slightly or seriously jump car.Bumping at bridge-head not only has a strong impact on the comfortableness of driving, reduce the travel speed of vehicle and the traffic capacity of road, the use that affects bridge and vehicle life-span, and can greatly increase Techniques in Maintenance of Roads expense, even cause traffic accident, produce bad social influence, grievous injury the economic and social benefit of high-grade highway, become urgent problem in high-grade highway construction.
For solving problem of vehicle bump at bridge head, in highway engineering, take multiple technologies scheme.The first technical scheme is to improve the density of Roadbed Soil; The second technical scheme is to change gravel, rubble, dirt filler; The third technical scheme is to adopt geonet or Fill Reinforced With Geogrids structure; The 4th kind of technical scheme is to adopt the light materials such as flyash, polystyrene foam plastics, foaming perlite to fill out; The 5th kind of technical scheme is to adopt default reverse gradient, changeover portion road surface road pavement is set processes.
In above-mentioned every technical scheme, reducing roadbed compressive strain with the means that improve platform back pressure solidity index, is current conventional technical scheme.One side platform is carried on the back the sedimentation of banketing and is comprised ground and subgrade settlement two parts, and this technical scheme has only been noticed the control of roadbed part sedimentation, and has ignored the control of Foundation Part sedimentation, and under general Sui condition, in the sedimentation of the platform back of the body, the sedimentation of Foundation Part plays a leading role.On the other hand, platform back of the body construction space is narrow, and the use of large-scale compacting equipment is restricted, and meet the requirements of degree of compaction very difficult.Therefore, be difficult to effectively avoid the generation of larger difference sedimentation with degree of compaction index control filling the back of abutments.
Geonet or geo-grid are as a kind of material of plane structure, little to the raising effect of subgrade stiffness, also very limited to the restriction of soil lateral, higher to the requirement of filler.This reinforcement can only be got rid of roadbed compressive strain, can not get rid of foundation settlement distortion, can only use at the good position of ground, can not solving problem of vehicle bump at bridge head at the position that foundation condition is poor.
Replacing method in platform back of the body certain limit, domestic main use graded broken stone, natural gravel, dirt, flyash, developed countries is except above-mentioned material, also use EPS light filler, can reduce roadbed compressive strain by changing filler, can not get rid of the sedimentation and deformation of ground, construction investment is large.
The soft foundation of road-bridge transition section is carried out to consolidation process, is the key point of controlling bumping at bridge-head, by ground stabilization processing, can make the ground settlement after construction of approach embankment greatly reduce.Though but adopt which kind of flexible foundation treatment method, and all can not solve soft foundation settlement issues at all, be difficult to eliminate vehicle bump at bridge ends.
Summary of the invention
Goal of the invention: technical problem underlying to be solved by this invention is to overcome the shortcoming of technique scheme, provide that a kind of bearing capacity is large, rigidity is large, good endurance, engineering cost are low and is easy to the abutment attachment strap mounting structure of repair and replacement, it is adjustable that this structure can realize attachment strap absolute altitude, adaptive capacity to the distortion of ground foundation uneven settlement is stronger, can reach and ensure that bridge floor is smooth with the road surface joining place of leading the way, control abutment is jumped the generation of car phenomenon.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
A mounting structure for abutment attachment strap, comprises attachment strap and sleeper beam, and set up on abutment one end of attachment strap, and joins with the beam body of bridge, and sleeper beam is laid on the below of the other end of attachment strap; It is characterized in that: between described attachment strap and sleeper beam, elastic supporting member for supporting optical member is set, on described elastic supporting member for supporting optical member and attachment strap, offer respectively the vertical through hole of mutual correspondence, in vertical through hole, wear pretension screw thread suspension rod, the lower end of described pretension screw thread suspension rod is fixed on sleeper beam, the upper end of pretension screw thread suspension rod and adjusting nut threaded engagement.
Wherein, described elastic supporting member for supporting optical member is at least two; Described elastic supporting member for supporting optical member comprises the elastic body who is butterfly-shaped, and vertically through hole is symmetricly set on four ends of elastic body.
Wherein, described adjusting nut is arranged on the edge of attachment strap.
Wherein, compaction pile is arranged in the bottom of described sleeper beam.
Beneficial effect: in the time that the attachment strap of newly building bridge is installed, attachment strap one end is placed on abutment, one end is placed on elastic supporting member for supporting optical member, utilize large rigidity, the scalability of elastic supporting member for supporting optical member, by pretension screw thread suspension rod and adjusting nut, attachment strap is carried out to precompressed, realized the adjustability of attachment strap absolute altitude, thereby made the adaptive capacity of ground sedimentation and deformation stronger, can reach and ensure that bridge floor is smooth with the road surface joining place of leading the way, control abutment is jumped car; Compared with the technology of jumping car with existing solution abutment, the present invention has that bearing capacity is large, rigidity large, good endurance, engineering cost are low and be easy to the advantages such as repair and replacement.
Brief description of the drawings
Fig. 1 is abutment attachment strap mounting structure schematic diagram of the present invention;
Fig. 2 is the structural representation of elastic supporting member for supporting optical member;
Fig. 3 is the structural representation of pretension screw thread suspension rod;
detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is done further and explained.
As shown in Figures 1 to 3, the mounting structure of a kind of abutment attachment strap of the present invention comprises attachment strap 6 and sleeper beam 4, and set up on abutment 8 one end of attachment strap 6, and joins with the beam body 7 of bridge, leaves shrinkage joint 9 in joint; Between attachment strap 6 soffits and the upper surface of abutment 8, add asphalt felt 11, between the soffit of beam body 7 and the upper surface of abutment 8, add bearing pad stone 10; Sleeper beam 4 is laid on the below away from attachment strap 6 other ends of abutment 8, and sleeper beam 4 fillings around banket 12, and arrange compaction pile 5 in bottom.Compaction pile 5 can be guaranteed the stable of sleeper beam 4, also can reduce the deflection of sleeper beam 4.
Attachment strap 6 and sleeper beam 4 and between elastic supporting member for supporting optical member 1 is set, on described elastic supporting member for supporting optical member 1 and attachment strap 6, offer respectively the vertical through hole 13 of mutual correspondence, this elastic supporting member for supporting optical member 1 comprises that is a butterfly-shaped elastic body, and vertically through hole 13 is symmetricly set on four ends of elastic body; In vertical through hole 13, wear columniform pretension screw thread suspension rod 2, pretension screw thread suspension rod 2 can be selected different diameters according to load bearing requirements.The lower end of described pretension screw thread suspension rod 2 is through elastic supporting member for supporting optical member 1 being fixed on sleeper beam 4, the upper end of pretension screw thread suspension rod 2 through attachment strap 6 and with adjusting nut 3 threaded engagement.
By regulating the pretightning force between screw thread suspension rod 2 and adjusting nut 3 to carry out the decrement of adjustable elastic support member 1, thereby adjust the absolute altitude of attachment strap 6.In the time causing 6 foundation settlement of platform attachment strap due to factors such as time, environment and heavy duties, can directly realize the lifting of platform attachment strap 6 ends by reducing the pretightning force of screw thread suspension rod 2, to ensure the smooth-going linking on bridge floor and road surface.
In the time that the attachment strap of newly building bridge is installed, elastic supporting member for supporting optical member 1 compresses method for determination of amount and is:
1, determine corresponding stiffness K when elastic supporting member for supporting optical member deflection is negligible under Vehicle Load;
Apply certain load F1 to elastic supporting member for supporting optical member, its deflection is L1; Give elastic supporting member for supporting optical member load application F2, deflection is L2; (generally get F2=2F1, or F2 value being larger).Negligible when the difference of deflection L2 and L1, for example both are only poor while being less than 2mm, think that the sedimentation of attachment strap can not affect garage's ride comfort on road surface, and now support bar has enough rigidity, while getting load F1 or F2, and the stiffness K that elastic supporting member for supporting optical member is corresponding.
2, the loaded deformation characteristic curve (or test obtains) providing according to elastic supporting member for supporting optical member manufacturer, obtains deflection δ corresponding to stiffness K.
3, according to different foundation soil situations, precompressed amount is adjusted, precompressed amount S=γ δ, wherein γ >=1, is a safety factor, and hard ground value is less, is generally 1.1～1.5, and soft site value can suitably be amplified, and is generally 1.5～3.0.
In the present invention, the quantity of elastic supporting member for supporting optical member 1 is at least two, guarantees like this stability of strutting system of elastic supporting member for supporting optical member 1 to attachment strap 6, and should be noted that adjusting nut 3 is placed in to attachment strap 6 edges can not affect driving, and nut outside is provided with safeguard measure.Elastic supporting member for supporting optical member 1, pretension screw thread suspension rod 2 and adjusting nut 3 all can adopt stainless steel material, and special antiseptic and rustproof processing is carried out in its surface, prevent corrosion.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (2)
1. the mounting structure of an abutment attachment strap, comprise attachment strap (6) and sleeper beam (4), set up on abutment (8) one end of attachment strap (6), and join with the beam body (7) of bridge, sleeper beam (4) is laid on the below of the other end of attachment strap (6), it is characterized in that: between described attachment strap (6) and sleeper beam (4), elastic supporting member for supporting optical member (1) is set, on described elastic supporting member for supporting optical member (1) and attachment strap (6), offer respectively the vertical through hole (13) of mutual correspondence, in vertical through hole (13), wear pretension screw thread suspension rod (2), the lower end of described pretension screw thread suspension rod (2) is fixed on sleeper beam (4), the upper end of pretension screw thread suspension rod (2) and adjusting nut (3) threaded engagement, elastic supporting member for supporting optical member (1) is at least two, compaction pile (5) is arranged in the bottom of sleeper beam (4),
Definite method of described elastic supporting member for supporting optical member (1) compress variation δ is, first applies certain load F1 to elastic supporting member for supporting optical member, and its deflection is L1; Give elastic supporting member for supporting optical member load application F2, deflection is L2; In the time that the difference of deflection L2 and L1 can be ignored, think that the sedimentation of attachment strap can not affect garage's ride comfort on road surface, now elastic supporting member for supporting optical member has enough stiffness K, the loaded deformation characteristic curve providing according to elastic supporting member for supporting optical member manufacturer or by test, obtain deflection δ corresponding to stiffness K, last again according to different foundation soil situations, precompressed amount is adjusted.
2. the mounting structure of a kind of abutment attachment strap according to claim 1, it is characterized in that: described elastic supporting member for supporting optical member (1) comprises the elastic body who is butterfly-shaped, vertically through hole (13) is symmetricly set on four ends of elastic body, and adjusting nut (3) is arranged on the edge of attachment strap (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210175833.2A CN102677584B (en) | 2012-05-31 | 2012-05-31 | Mounting structure of abutment butt strap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210175833.2A CN102677584B (en) | 2012-05-31 | 2012-05-31 | Mounting structure of abutment butt strap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102677584A CN102677584A (en) | 2012-09-19 |
| CN102677584B true CN102677584B (en) | 2014-08-13 |
Family
ID=46810103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210175833.2A Expired - Fee Related CN102677584B (en) | 2012-05-31 | 2012-05-31 | Mounting structure of abutment butt strap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102677584B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194962B (en) * | 2013-05-03 | 2014-12-10 | 福州大学 | Structure and construction method for reducing abutment staggering based on flexible pile |
| CN104988852B (en) * | 2015-05-25 | 2017-03-15 | 武汉理工大学 | Presetting system is adjustable, and attachment strap processes the jacking apparatus of bumping at bridge-head |
| CN108103923A (en) * | 2017-12-01 | 2018-06-01 | 浙江工业大学 | A kind of anti-bumping at bridge-head device of bridge |
| CN110685202A (en) * | 2019-09-23 | 2020-01-14 | 苏交科集团股份有限公司 | Lapping plate pushing construction method for reducing bumping at bridge head |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1488815A (en) * | 2003-08-18 | 2004-04-14 | 斌 徐 | Comb board levelling apparatus for bomb type bridge stretching device and mounting method thereof |
| CN2677438Y (en) * | 2003-10-30 | 2005-02-09 | 湖南大学 | Total smeamless bridge of highway bridge |
| JP2006077548A (en) * | 2004-09-13 | 2006-03-23 | Gaeart Tk:Kk | Road construction method of smooth face form |
| CN202610700U (en) * | 2012-05-31 | 2012-12-19 | 东南大学 | Mounting structure of bridge abutment access board |
-
2012
- 2012-05-31 CN CN201210175833.2A patent/CN102677584B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1488815A (en) * | 2003-08-18 | 2004-04-14 | 斌 徐 | Comb board levelling apparatus for bomb type bridge stretching device and mounting method thereof |
| CN2677438Y (en) * | 2003-10-30 | 2005-02-09 | 湖南大学 | Total smeamless bridge of highway bridge |
| JP2006077548A (en) * | 2004-09-13 | 2006-03-23 | Gaeart Tk:Kk | Road construction method of smooth face form |
| CN202610700U (en) * | 2012-05-31 | 2012-12-19 | 东南大学 | Mounting structure of bridge abutment access board |
Non-Patent Citations (2)
| Title |
|---|
| 城市快速通道桥头搭板的改进设计;骆飞等;《中国市政工程》;20091031(第5期);第31~34页及附图2 * |
| 骆飞等.城市快速通道桥头搭板的改进设计.《中国市政工程》.2009,(第5期),第31~34页. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102677584A (en) | 2012-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204418003U (en) | A kind of bridge platform post processing combined system | |
| CN106192646B (en) | Vcehicular tunnel car-driving shock-absorbing denoising structure and its construction method | |
| CN204401444U (en) | A kind of high embankment filled soil end of the bridge anti-settling structure | |
| CN102677584B (en) | Mounting structure of abutment butt strap | |
| CN110904740B (en) | Roadbed and method for controlling differential settlement of high-speed railway road and bridge transition section | |
| CN201924250U (en) | Pile foundation for treating railway short-embankment deep and thick soft soil groundwork | |
| CN201095716Y (en) | Slag-free orbit reinforced concrete pile net structure roadbed | |
| CN202610700U (en) | Mounting structure of bridge abutment access board | |
| CN107217552A (en) | Automatic compensating steel sleeper for free settling location | |
| CN101144256A (en) | Slag-free orbit reinforced concrete pile net structure roadbed and construction method thereof | |
| CN111945510B (en) | Self-adaptive environment-friendly prevention and control construction method and device for bump at bridge head | |
| CN201296895Y (en) | Vertical cracking pavement repair structure | |
| CN109518558B (en) | Device and method for preventing bridge head from jumping | |
| CN105803922A (en) | High embankment filling bridgehead sedimentation preventing structure | |
| CN201924249U (en) | Transition roadbed for dealing with vehicle bump | |
| CN203866814U (en) | Medium-compressibility soil foundation reinforcing structure for high speed railway | |
| CN207958885U (en) | A kind of anti-settling highway subgrade | |
| CN110792009A (en) | Bridge head bump prevention and control structure based on concrete composite pavement and laying method thereof | |
| D'Angelo | Bitumen stabilised ballast: a novel track-bed solution towards a more sustainable railway | |
| CN101974871A (en) | Short roadbed transition section structure between culverts of high speed railway | |
| CN206127789U (en) | Structure of making an uproar falls in highway tunnel driving damping | |
| CN206328672U (en) | One kind improvement transition segment structure | |
| CN103498391B (en) | Section rod friction type stepless automatic height-adjustment sleeper | |
| CN208415006U (en) | Magnetic sand filled-type compensates steel sleeper | |
| CN208472551U (en) | The construction of abutment rigid frame bridge |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20170531 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |