CN104278624B - One uprises journey bridge pad - Google Patents

One uprises journey bridge pad Download PDF

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Publication number
CN104278624B
CN104278624B CN201410529632.7A CN201410529632A CN104278624B CN 104278624 B CN104278624 B CN 104278624B CN 201410529632 A CN201410529632 A CN 201410529632A CN 104278624 B CN104278624 B CN 104278624B
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China
Prior art keywords
steel ball
support body
cavity
supporter
bridge
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CN201410529632.7A
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CN104278624A (en
Inventor
干伟忠
陈琦
舒佳明
方小爱
蒋海平
汤陈皓
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Ningbo University of Technology
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Ningbo University of Technology
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/04Bearings; Hinges
    • E01D19/048Bearings being adjustable once installed; Bearings used in incremental launching

Abstract

The invention discloses one and uprise journey bridge pad, comprise support body, this support body is provided with set bolt, axially cavity is shaped with in support body, be provided with in this cavity can be axially movable supporter, the top of this supporter supports with bridge beam body and coordinates, the below being positioned at supporter in cavity is provided with steel ball, gap-fill between steel ball has butter, the bottom sidewall of support body being positioned at described cavity is provided with steel ball floss hole, steel ball floss hole is provided with vent valves, support body top is provided with for placing the placement section falling journey temporary support.The invention has the advantages that: structure is simple, easy to operate, elevation is reduced by the steel ball in discharge cavity, the problem occurring depth displacement between bridge beam body from access bridge road surface because settling height is different can be solved well, improve bridge safe, use and endurance quality, improve road-ability energy, reduce the expense that the maintenance of engineering operational phase is safeguarded.

Description

One uprises journey bridge pad
Technical field
The present invention relates to bridge construction technical field, especially one uprises journey bridge pad.
Background technology
Have a lot in the kind of engineering Bridge bearing, be mainly divided into four classes: simple and easy bearing, steel support, steel concrete bearing and neoprene bearing.These existing bridge pads have a common defect: the height of its bearing is fixing, uncontrollable.Build up at bridge, the operation initial stage, the junction of bridge beam body and bridge are connected nature with the junction of road, and longitudinal gradient is better, and the planeness of bridge floor, the comfort level of driving etc. are all good, but As time goes on can produce gradually and jump car phenomenon.
The highway construction of especially building on soft foundation, the problem of bumping at bridge-head minister of public works in ancient china is minded, very generally.Bumping at bridge-head is very big to the normal influence on system operation of road and bridge, and its harm main manifestations is: the disease on affect traffic safety, reduce road speed, affect vehicle ages and acceleration bridge and road surface.
The main cause of bumping at bridge-head is caused to have Soft Ground of Road sedimentation and the sudden change of the works such as road and bridges and culverts rigidity etc.Generally speaking, the uneven sedimentation in junction mainly between the road of relative flexibility and the piling strtucture thing of relative stiffness and producing caused by faulting of slab ends.
Composition material, rigidity, intensity, the swell-shrink characteristic on bridge top and the bottom structure and embankment, roadbed, road surface, to there are differences with the acting in conjunction characteristic etc. of ground, and when end of the bridge junction is stressed, easily cause stress to concentrate.Under the effect of the factor such as car load, dead load, although all can sedimentation be there is in bridge and road, but there were significant differences for both settling amounts, the settling amount of road is generally greater than the settling amount of bridge, thus form discrepancy in elevation faulting of slab ends, cause occurring to jump car at end of the bridge during driving, affect bridge driving comfort level and safety, use and endurance quality.
Summary of the invention
Technical problem to be solved by this invention is the present situation for prior art, provides structure simple, and fall high easy to operate, use, the one that maintenance cost is low uprise journey bridge pad.
The present invention solves the problems of the technologies described above adopted technical scheme:
One uprises journey bridge pad, comprise support body, this support body is provided with set bolt, axially cavity is shaped with in support body, be provided with in this cavity can be axially movable supporter, the top of this supporter supports with bridge beam body and coordinates, the below being positioned at supporter in cavity is provided with steel ball, gap-fill between steel ball has butter, the bottom sidewall of support body being positioned at described cavity is provided with steel ball floss hole, steel ball floss hole is provided with vent valves, and support body top is provided with for placing the placement section falling journey temporary support; Release steel ball by steel ball floss hole and reduce elevation.
The technical measures optimized also comprise:
The tapered structure in bottom of above-mentioned cavity, the bottom of supporter is suitable pyramidal structure, and steel ball floss hole is obliquely installed along the inclination direction of pyramidal structure.
The inclination angle of above-mentioned pyramidal structure is 10 ° to 15 °.
Above-mentioned placement section is the cavity being arranged at described support body top, and the number of cavity is three, and is uniformly distributed on the periphery at described support body top.
The number of above-mentioned steel ball floss hole is two, and two steel ball floss holes are symmetrical arranged.
The longitudinal section of above-mentioned supporter becomes T font structure.
The bottom of above-mentioned support body is provided with base-plate, and the longitudinal section of support body becomes the font structure of falling T.
The below of above-mentioned base-plate is provided with pinner under bearing.
Bearing upper padding plate is provided with between the upper end face of above-mentioned supporter and described bridge beam body.
The central axis of above-mentioned supporter is to being shaped with hollow column, and the soffit center of bearing upper padding plate is to being arranged with projection, and projection is embedded in described hollow column.
One of the present invention uprises journey bridge pad, form primarily of support body and the supporter be arranged in the cavity of support body, the below being positioned at supporter in cavity is provided with steel ball, gap-fill between steel ball has butter, the sidewall of support body is provided with steel ball floss hole, steel ball floss hole is provided with vent valves, and support body top is provided with for placing the placement section falling journey temporary support.When needing to reduce elevation, placement section place proper height journey temporary support is fallen, then opening vent valves makes steel ball in cavity discharge from steel ball floss hole, thus supporter is slowly declined, until supporter with fall journey temporary support and contact, after elevation decline puts in place, close vent valves, just complete the operation reducing elevation.Originally uprise journey bridge pad, structure is simple, easy to operate, can solve the problem occurring depth displacement between bridge beam body from access bridge road surface because settling height is different well.
The method that the present invention adopts adjustment to uprise journey bridge pad elevation eliminates depth displacement, can better be conducive to the smooth connection of bridge and road and keep the longitudinal line style of design.The invention solves between bridge beam body that soft clay area bridge and road cause by soft soil consolidation, foundation settlement or other factors or the depth displacement produced between bridge beam body and road access bridge, thus improve bridge safe, use and endurance quality, improve road-ability energy, reduce the expense that the maintenance of engineering operational phase is safeguarded.
In addition, the tapered structure in bottom of cavity, makes steel ball discharge allow to more smooth and easy; And two steel ball floss holes are symmetrical arranged, steel ball is discharged from both sides simultaneously, make supporter uniform stressed, ensure its stressed stability, avoid one-sided stressed and cause the destruction to bridge pad.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present invention;
Fig. 2 is I portion enlarged drawing in Fig. 1;
Fig. 3 is II enlarged drawing in Fig. 1;
Fig. 4 of the present inventionly looks up structural representation.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Be structural representation of the present invention as shown in Figures 1 to 4,
Reference numeral is wherein: inclination alpha, support body 1, cavity 1a, base-plate 11, set bolt 2, supporter 3, hollow column 31, bridge beam body 4, steel ball 5, butter 6, steel ball floss hole 7, vent valves 71, falls pinner 91, bearing upper padding plate 92, protruding 92a under journey temporary support 8, bearing.
As shown in Figures 1 to 4,
One uprises journey bridge pad, comprise support body 1, this support body 1 is provided with set bolt 2, axially cavity is shaped with in support body 1, be provided with in this cavity can be axially movable supporter 3, the top of this supporter 3 supports with bridge beam body 4 and coordinates, the below being positioned at supporter 3 in cavity is provided with steel ball 5, gap-fill between steel ball 5 has butter 6, the bottom sidewall of support body 1 being positioned at described cavity is provided with steel ball floss hole 7, steel ball floss hole 7 is provided with vent valves 71, support body 1 top is provided with for placing the placement section falling journey temporary support 8, release steel ball 5 by steel ball floss hole 7 and reduce elevation.
Vent valves 71 is bonded by screw thread and support body 1 by the screw rod of high strength.
Falling journey temporary support 8 can be jack.
Adopt steel ball 5 and butter 6 to fill in cavity, steel ball 5 adopts superhigh intensity steel ball to strengthen support force.The effect of steel ball 5 provides support power for uprising journey bridge pad, the space between steel ball 5 is filled in the effect of butter 6, and play lubrication to reduce steel ball 5 and support body 1 inwall and the friction between steel ball 5 and steel ball 5, steel ball 5 freely can be rolled according to pressure direction and pressure size under stress.Steel ball 5 and butter 6 acting in conjunction under pressure, the branch of the pressure uniform that bridge beam body 4 can be made to produce is on each steel ball 5, stress concentration phenomenon can not be caused, can make to uprise journey bridge pad better to come into operation, also improve the security performance and endurance quality that uprise journey bridge pad.
In embodiment, the tapered structure in bottom of cavity, the bottom of supporter 3 is suitable pyramidal structure, and steel ball floss hole 7 is obliquely installed along the inclination alpha direction of pyramidal structure.
In embodiment, the inclination alpha of pyramidal structure is 10 ° to 15 °.
When the setting of pyramidal structure makes the bottom of supporter 3 and steel ball 5 extrude to contact, outside component can be produced, carry out steel ball 5 discharge when opening vent valves 71, just can produce the effect of outwards extruding, thus more be conducive to the discharge of steel ball 5; Meanwhile, steel ball 5 will roll out along slope when discharging, and the discharge of steel ball 5 can be made more smooth.
In embodiment, placement section is the number of the cavity 1a being arranged at described support body 1 top, cavity 1a is three, and is uniformly distributed on the periphery at described support body 1 top.
The setting of cavity 1a greatly facilitates the placement of falling journey temporary support 8, also facilitates the location falling journey temporary support 8; Three cavity 1a are uniformly distributed on periphery, and angle is between any two 120 °, adopt triangular structure to support, simple, stable.
In embodiment, the number of steel ball floss hole 7 is two, and two steel ball floss holes 7 are symmetrical arranged.
Arranging two steel ball floss holes 7 can the mass rate of emission of fixture block steel ball 5, and symmetrically arranged steel ball floss hole 7 makes steel ball 5 discharge from both sides simultaneously, avoid one-sided discharge and cause unbalance stress, the stability that impact supports, it also avoid and cause bridge pad structural damage because of unbalance stress.
In embodiment, the longitudinal section of supporter 3 becomes T font structure.T font structure can increase Area of bearing, thus makes support more stable.
In embodiment, the bottom of support body 1 is provided with base-plate 11, and the longitudinal section of support body 1 becomes the font structure of falling T.Base-plate 11 is set, adds contact area, make structure more stable; Set bolt 2 is uniformly distributed on four angles of base-plate 11.
In embodiment, the below of base-plate 11 is provided with pinner 91 under bearing.
In embodiment, between the upper end face of supporter 3 and described bridge beam body 4, be provided with bearing upper padding plate 92.It is reduce the friction between bridge beam body 4 and bridge pad that bearing upper padding plate 92 makes Main Function by polytetrafluoroethylene (PTFE), also serves the effect of protection bridge pad simultaneously.
In embodiment, the central axis of supporter 3 is to being shaped with hollow column 31, and the soffit center of bearing upper padding plate 92 is to being arranged with protruding 92a, and protruding 92a is embedded in described hollow column 31.The cooperation of protruding 92a and hollow column 31 facilitates installation and the location of bearing upper padding plate 92.
Using method:
Bridge in use, because bridge beam body 4 there will be depth displacement with access bridge road surface because settling height is different.(in surveying, the definition of elevation is the height of certain Ground Point on terrestrial gravitation direction, the namely height of center of gravity place terrestrial gravitation line.)
When needs reduce elevation, the discrepancy in elevation that the first step first produces according to actual conditions Bridge beam body 4, determine the required elevation reduced of bridge pad, second step falls journey temporary support 8 (as jack) according to what determine that the elevation that will reduce adjusts corresponding height; 3rd step opens vent valves 71, the weight of bridge beam body 4 is passed to steel ball 5 by supporter 3, steel ball 5 is squeezed and just tumbles from the steel ball floss hole 7 of both sides, discharge, along with rolling out of steel ball 5, the height of supporter 3 just can slowly decline, the elevation of bridge pad just can along with decline, until reach required elevation; When 4th step reaches required elevation, holder top divides born pressure will bear by falling journey temporary support 8, and at this moment steel ball 5 will also can not outwards not roll out stressed again, at this moment, steel ball floss hole 7 will be blocked by vent valves 71; 5th step slowly reduces height and falls journey temporary support 8 and again allow steel ball 5 bear load, takes out and falls journey temporary support 5, just complete the whole process uprising journey uprising journey bridge pad.
Originally journey bridge pad structure is uprised simple, easy to operate, in operating process without the need to using other Special Tool, and in adjustment process, there is higher-security, meeting the requirement of environmental protection and energy-saving and emission-reduction simultaneously.Use and originally uprise journey bridge pad and solve between bridge beam body that soft clay area bridge and road cause by soft soil consolidation, foundation settlement or other factors or the depth displacement produced between bridge beam body and road access bridge, thus improve bridge safe, use and endurance quality, improve road-ability energy, reduce the expense that the maintenance of engineering operational phase is safeguarded.
Most preferred embodiment of the present invention is illustrated, and the various change made by those of ordinary skill in the art or remodeling all can not depart from the scope of the present invention.

Claims (6)

1. one kind uprises journey bridge pad, comprise support body (1), this support body (1) is provided with set bolt (2), it is characterized in that: in described support body (1), be axially shaped with cavity, be provided with in this cavity can be axially movable supporter (3), the top of this supporter (3) supports with bridge beam body (4) and coordinates, the below being positioned at supporter (3) in described cavity is provided with steel ball (5), gap-fill between described steel ball (5) has butter (6), the bottom sidewall of described support body (1) being positioned at described cavity is provided with steel ball floss hole (7), described steel ball floss hole (7) is provided with vent valves (71), described support body (1) top is provided with for placing the placement section falling journey temporary support (8), release steel ball (5) by steel ball floss hole (7) and reduce elevation, the tapered structure in bottom of described cavity, the bottom of described supporter (3) is suitable pyramidal structure, and described steel ball floss hole (7) is obliquely installed along inclination angle (α) direction of pyramidal structure, the inclination angle (α) of described pyramidal structure is 10 ° to 15 °, the longitudinal section of described supporter (3) becomes T font structure, the bottom of described support body (1) is provided with base-plate (11), and the longitudinal section of described support body (1) becomes the font structure of falling T.
2. one according to claim 1 uprises journey bridge pad, it is characterized in that: described placement section is for being arranged at the cavity (1a) at described support body (1) top, the number of described cavity (1a) is three, and is uniformly distributed on the periphery at described support body (1) top.
3. one according to claim 2 uprises journey bridge pad, it is characterized in that: the number of described steel ball floss hole (7) is two, and two steel ball floss holes (7) are symmetrical arranged.
4. one according to claim 3 uprises journey bridge pad, it is characterized in that: the below of described base-plate (11) is provided with pinner (91) under bearing.
5. one according to claim 4 uprises journey bridge pad, it is characterized in that: be provided with bearing upper padding plate (92) between the upper end face of described supporter (3) and described bridge beam body (4).
6. one according to claim 5 uprises journey bridge pad, it is characterized in that: the central axis of described supporter (3) is to being shaped with hollow column (31), the soffit center of described bearing upper padding plate (92) is to being arranged with projection (92a), and described projection (92a) is embedded in described hollow column (31).
CN201410529632.7A 2014-10-10 2014-10-10 One uprises journey bridge pad Active CN104278624B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105369742B (en) * 2015-10-14 2016-11-30 天津城建大学 It is applicable to the rolling bearing unified with permanent bearing of incremental launching method
CN108589560B (en) * 2018-04-04 2019-06-21 武汉二航路桥特种工程有限责任公司 Bridge cast steel list roller support correction restorative procedure
CN108677695A (en) * 2018-06-12 2018-10-19 广东工业大学 A kind of bearing for bridge structure
CN112376406A (en) * 2020-10-27 2021-02-19 吴紫苑 Formula bridge that sinks is prevented in high life

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070018298A (en) * 2005-08-09 2007-02-14 주식회사 케이.알 Structure of bridge support
KR101031180B1 (en) * 2010-01-13 2011-05-03 산이건설 주식회사 Infilled type steel box bridge holder
CN201981488U (en) * 2011-04-18 2011-09-21 上海兰德公路工程咨询设计有限公司 Assembly type steel bridge support seat fine adjustment device for emergency repair
CN204125832U (en) * 2014-10-10 2015-01-28 宁波工程学院 One uprises journey bridge pad

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070018298A (en) * 2005-08-09 2007-02-14 주식회사 케이.알 Structure of bridge support
KR101031180B1 (en) * 2010-01-13 2011-05-03 산이건설 주식회사 Infilled type steel box bridge holder
CN201981488U (en) * 2011-04-18 2011-09-21 上海兰德公路工程咨询设计有限公司 Assembly type steel bridge support seat fine adjustment device for emergency repair
CN204125832U (en) * 2014-10-10 2015-01-28 宁波工程学院 One uprises journey bridge pad

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