CN205012218U - Iron road bridge for roof beam bridge floor or track do not have lifting longitudinal movement ball -type support - Google Patents
Iron road bridge for roof beam bridge floor or track do not have lifting longitudinal movement ball -type support Download PDFInfo
- Publication number
- CN205012218U CN205012218U CN201520728263.4U CN201520728263U CN205012218U CN 205012218 U CN205012218 U CN 205012218U CN 201520728263 U CN201520728263 U CN 201520728263U CN 205012218 U CN205012218 U CN 205012218U
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- bridge
- longitudinally
- spherical bearing
- support
- roof beam
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Abstract
The utility model relates to an iron road bridge for roof beam bridge floor or track do not have lifting longitudinal movement ball -type support, the bottom suspension bedplate of support are the wedge, and the longitudinal gradient is parallel on the upper surface of bottom suspension bedplate and the roof beam, the level closely connected and be connected with anchor bolt between bottom suspension bedplate and support pinner, the upper bracket board and the spherical crown welt of support are put to one side, and it can direct free longitudinal movement between bridge and support to make. The construction method is, clear chisel of support pinner top surface and retest, and the support crab -bolt is counterpointed, and the hoist and mount of longitudinal movement ball -type support are taken one's place, anchor hole mud jacking, peripheral shutoff, lower bedplate mud jacking. The utility model discloses when indisputable road bridge roof beam longitudinal extension warp, the spherical bearing glide plane all the time with the bridge roof beam on the longitudinal gradient keeping parallelism, iron road bridge roof beam can free longitudinal movement, adapts to the linear deformation of indisputable road bridge roof beam, and avoid the support to come to nothing and phenomenons such as bridge floor or track lifting appear. Its structure atress is reasonable, the construction is succinct, and it is steadily comfortable to drive a vehicle, and the durability reaches well maintains the convenience, has been applied to shanghai and has led to the yangtze bridge.
Description
Technical field
The utility model relates to a kind of railroad bridge bridge floor or track without lifting longitudinally-moving spherical bearing.
Background technology
It is strong, non-directional and can adjust the angle of bearing upper plate in advance that spherical bearing has turning power as a kind of Novel base for supporting of exceptional function, the deformation characteristic of bridge construction multiple-directional rotating can be met, bridge pad directly have influence on bridge application life and traffic safety smooth and easy.The Major Diseases of current bearing comprises: (1) seat empty: at the bottom of bearing pad stone and beam, steel plate is out-of-level; (2) bearing abnormal deformation; (3) bearing can not normally slide; (4) bearing cracking.
Tradition spherical bearing structure is shown in Fig. 2,3.The displacement of spherical bearing is realized by the relative sliding of lower support plate and spherical crown liner plate.When bridge needs to arrange longitudinal gradient, be establish longitudinal gradient 3 at wedge-shaped steel plate 4 upper surface, soffit is horizontal plane; Wedge-shaped steel plate upper surface and girder steel 5 bolt.The upper bracket plate 6 of spherical bearing, spherical crown liner plate 7 and lower support plate 1 be horizontal positioned all, and the slide plane of spherical bearing is horizontal plane.This structure can bring following problems:
(1) establish longitudinal gradient by the mortar bed on bearing pad stone, cannot eliminate prefabricated error because pinner size is less, the mar proof of mortar bed and poor durability, be thus difficult to realize predetermined longitudinal gradient value in addition;
(2) longitudinal gradient is established by connecing wedge-shaped steel plate at bridge back welding, ensure spherical bearing horizontal positioned, realize between beam body and spherical bearing closely connected, this way is usually used in highway bridge, but there is bridge under load (containing variations in temperature) effect, spherical bearing, in longitudinal reciprocating motion, causes the lifting of bridge beam end bridge floor or reduction (see Fig. 3), affects the smooth-going operation of vehicle.The lifting of beam-ends rail or reduction can be made for railway bridge, cause deformation of rail excessive, affect the smooth-going of track circuit, track also can be made simultaneously to produce very large subsidiary stress, there is larger hidden danger, have a strong impact on functional performance and the train operating safety of integral bridge.
In view of current many bridges are all provided with longitudinal gradient, the spherical bearing that existing spherical bearing can not solve or avoid spherical bearing to slide to cause comes to nothing and bridge floor or track lifting.In order to solve this difficult problem, need to carry out innovative design to spherical bearing structure.
Summary of the invention
The purpose of this utility model is for above-mentioned present situation, aim to provide one and can meet the requirement of railroad bridge longitudinal gradient, avoid vertically moving due to bearing simultaneously, railroad bridge end bridge floor or track is caused to produce lifting effect, make rail smooth, drive a vehicle steady, comfortable, safety, good endurance, the railroad bridge bridge floor that maintenance workload is few or track are without lifting longitudinally-moving spherical bearing.
The implementation of the utility model object is, railroad bridge bridge floor or track are without lifting longitudinally-moving spherical bearing, the upper surface of the lower support plate of longitudinally-moving spherical bearing is parallel with longitudinal gradient on beam, and lower support plate is designed to wedge shape, and bridge longitudinally moves freely in wedge surface energy; Lower support plate is closely connected with bearing pad stone level and be connected with anchor bolt; Upper bracket plate and the spherical crown liner plate of spherical bearing are tilting, and upper lower support plate forms a pair longitudinal sliding motion friction pair, make longitudinally-moving spherical bearing slide plane design longitudinal gradient keeping parallelism with girder steel all the time.
The utility model main feature is as follows:
(1) upper surface of lower support plate is parallel with longitudinal gradient in Bridge Beam, and lower support plate is closely connected with bearing pad stone level and be connected with anchor bolt; When bridge vertically moves, due to longitudinally-moving spherical bearing slide plane all the time with longitudinal gradient keeping parallelism in Bridge Beam, girder construction can longitudinal Free Transform and do not produce vertical displacement change, avoid rail produce additional force;
(2) lower support plate is designed to wedge shape, girder can realize longitudinally moving freely by longitudinally-moving spherical bearing, the counter-force that longitudinally-moving spherical bearing bears can be transmitted, fully can adapt to again the Free Transform of beam body, avoid longitudinally-moving spherical bearing to move and cause bridge floor or track lifting phenomenon to occur, thus extend bridge floor or track application life, improve bridge floor roadability and safety.
(3) longitudinally-moving spherical bearing does not use rubber pressure-bearing, and there is not the impact of the hardening aging grade of rubber in longitudinally-moving spherical bearing on spherical bearing rotating property and durability, mar proof is strong, is therefore suitable for too for northern low temp area bridge.
Longitudinally-moving spherical bearing of the present utility model have structure stress rationally, construction is succinct, perfect in shape and function, drives a vehicle steadily comfortable, good endurance and maintenance workload little, be convenient to the advantages such as maintenance and replacement, for bridge design field opens new approach, there is popularizing application prospect widely.The utility model has been applied to Shanghai Changjiang River Bridge Project, and current bridge completes construction drawing design.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation,
Fig. 2 is that tradition adopts wedge-shaped steel plate to establish the seat structure figure of longitudinal gradient,
Fig. 3 is the schematic diagram of traditional spherical bearing generation length travel.
Detailed description of the invention
With reference to the accompanying drawings in detail the utility model is described in detail.
With reference to Fig. 1, the upper surface of the lower support plate 1 of longitudinally-moving spherical bearing is parallel with longitudinal gradient on the beam of girder steel 5, and lower support plate is designed to wedge shape, and bridge longitudinally moves freely in wedge surface energy.Lower support plate 1 is closely connected with bearing pad stone 2 level and be connected with anchor bolt.The upper bracket plate 6 of spherical bearing and spherical crown liner plate 7 are all tilting according to longitudinal gradient on beam, and upper lower support plate forms a pair longitudinal sliding motion friction pair, make longitudinally-moving spherical bearing slide plane design longitudinal gradient keeping parallelism with girder steel 5 all the time.
The upper surface of lower support plate 1 is parallel with longitudinal gradient on beam, lower seat board is with bearing pad stone maintenance level and be connected with anchor bolt, during the generation length travel of longitudinally-moving spherical bearing, longitudinally-moving spherical bearing slide plane all the time with girder steel keeping parallelism, bridge realizes vertically moving by bearing, avoid longitudinally-moving spherical bearing to come to nothing and the appearance of the phenomenon such as bridge floor or track lifting, improve bridge floor roadability and safety.
Operating principle of the present utility model is:
The length travel function of longitudinally-moving spherical bearing is realized by the slip between spherical crown liner plate and lower seat board.
It is stressed that longitudinally-moving spherical bearing does not affect main structure after being longitudinally subjected to displacement or rotating, when longitudinally-moving spherical bearing is by external force longitudinal sliding motion, slide plane all the time with longitudinal gradient keeping parallelism on beam.Avoid producing extra additional force to have a negative impact to girder steel beam body and track.
The rotating function of longitudinally-moving spherical bearing is realized by the relative sliding of ball type of contact surface between upper bracket plate and spherical crown liner plate.
The concrete steps of construction of the present utility model are as follows:
(1) bearing pad stone end face is cut a hole clearly and repetition measurement, according to construction design drawing, determines the placing direction of longitudinally-moving spherical bearing, especially the main displacement direction of longitudinally-moving spherical bearing, ensures the correct of each longitudinally-moving spherical bearing installation direction;
(2) longitudinally-moving spherical bearing crab-bolt contraposition, bearing pad stone reserves anchor hole position by design drawing, and arranges spacer bars to ensure duct not off normal when fluid concrete vibrates, and guarantees its verticality.
(3) longitudinally-moving spherical bearing hoisted in position,
(4) longitudinally-moving spherical bearing anchor hole mud jacking,
(5) longitudinally-moving spherical bearing periphery shutoff,
(6) seat board mud jacking under longitudinally-moving spherical bearing.
The replacing of the utility model during runing is safeguarded:
Bridge longitudinally-moving spherical bearing changes overall plan: the preparation of construction carrying out each side, after blocking circuit, adopt large-tonnage hydraulic jack by the beam body of Dun Ding jack-up simultaneously, by outside old longitudinally-moving spherical bearing pull-out bridge, reinstall new longitudinally-moving spherical bearing after digging out grouting material in place, beam body falls, perfusion grouting material, reach intensity backed off after random jack, recover circuit and pass through.
The utility model design service life is no less than 60 years, regularly should carry out protective coating to longitudinally-moving spherical bearing structure and crab-bolt during operation.Check that longitudinally-moving spherical bearing crab-bolt is with or without cutting off, longitudinally-moving spherical bearing dust seal skirt is with or without breakage; Check and fix a point to check longitudinally-moving spherical bearing height change, to check the abrasion condition of tetrafluoroethene plate in bearing, when longitudinally-moving spherical bearing height change is more than 3mm, should consider whether change tetrafluoroethene plate.
The utility model have structure stress rationally, construction is succinct, using function is perfect, drives a vehicle steadily comfortable, good endurance and maintenance workload little, be convenient to the advantages such as maintenance and replacement, for bridge design field opens new approach, there is popularizing application prospect widely.The utility model, through simple adjustment, can be used for longitudinally-moving bearing, the Design and manufacture of multidirectional freely movable bearing, avoids railway beam-ends bridge floor or track lifting on driving impact.The utility model has been applied to Shanghai Changjiang River Bridge Project, and current bridge completes construction drawing design.
Claims (2)
1. railroad bridge bridge floor or track are without lifting longitudinally-moving spherical bearing, it is characterized in that: the upper surface of the lower support plate of longitudinally-moving spherical bearing is parallel with longitudinal gradient on beam, and lower support plate is designed to wedge shape, and bridge longitudinally moves freely in wedge surface energy; Lower support plate is closely connected with bearing pad stone level and be connected with anchor bolt; Upper bracket plate and the spherical crown liner plate of spherical bearing are tilting, and upper lower support plate forms a pair longitudinal sliding motion friction pair, make longitudinally-moving spherical bearing slide plane design longitudinal gradient keeping parallelism with girder steel all the time.
2. railroad bridge bridge floor according to claim 1 or track are without lifting longitudinally-moving spherical bearing, it is characterized in that: the coated corrosion resistant plate of lower support plate upper surface of longitudinally-moving spherical bearing, the coated tetrafluoroethene plate of spherical crown liner plate soffit, the slip of longitudinally-moving spherical bearing is realized by the slide plane formed between lower support plate and spherical crown liner plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520728263.4U CN205012218U (en) | 2015-09-18 | 2015-09-18 | Iron road bridge for roof beam bridge floor or track do not have lifting longitudinal movement ball -type support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520728263.4U CN205012218U (en) | 2015-09-18 | 2015-09-18 | Iron road bridge for roof beam bridge floor or track do not have lifting longitudinal movement ball -type support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205012218U true CN205012218U (en) | 2016-02-03 |
Family
ID=55210830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520728263.4U Withdrawn - After Issue CN205012218U (en) | 2015-09-18 | 2015-09-18 | Iron road bridge for roof beam bridge floor or track do not have lifting longitudinal movement ball -type support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205012218U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200915A (en) * | 2015-07-14 | 2015-12-30 | 中铁大桥勘测设计院集团有限公司 | Bridge deck or rail non-lifting longitudinal movable spherical support for railway bridge and construction method thereof |
| CN106988225A (en) * | 2017-05-18 | 2017-07-28 | 陕西中咨土木工程技术研究院有限公司 | A kind of self-adapting regulation method and its structure for solving bridge pad initial deformation |
-
2015
- 2015-09-18 CN CN201520728263.4U patent/CN205012218U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200915A (en) * | 2015-07-14 | 2015-12-30 | 中铁大桥勘测设计院集团有限公司 | Bridge deck or rail non-lifting longitudinal movable spherical support for railway bridge and construction method thereof |
| CN105200915B (en) * | 2015-07-14 | 2017-05-17 | 中铁大桥勘测设计院集团有限公司 | Bridge deck or rail non-lifting longitudinal movable spherical support for railway bridge and construction method thereof |
| CN106988225A (en) * | 2017-05-18 | 2017-07-28 | 陕西中咨土木工程技术研究院有限公司 | A kind of self-adapting regulation method and its structure for solving bridge pad initial deformation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160203 Effective date of abandoning: 20170517 |