CN110396913B - Device for preventing pier from deviating in high pier bridge of large longitudinal slope - Google Patents
Device for preventing pier from deviating in high pier bridge of large longitudinal slope Download PDFInfo
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- CN110396913B CN110396913B CN201910725496.1A CN201910725496A CN110396913B CN 110396913 B CN110396913 B CN 110396913B CN 201910725496 A CN201910725496 A CN 201910725496A CN 110396913 B CN110396913 B CN 110396913B
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- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 230000008602 contraction Effects 0.000 abstract description 3
- 230000001174 ascending effect Effects 0.000 description 17
- 238000010276 construction Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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Abstract
The invention provides a device for preventing deflection of a pier of a high pier bridge with a large longitudinal slope, which comprises at least one group of deflection preventing devices, wherein the deflection preventing devices are fixedly arranged on a capping beam, a downward slope stop block is arranged on the deflection preventing devices, a downward slope diaphragm plate is arranged on a downward slope main beam, the downward slope stop block is positioned on one side of the downward slope diaphragm plate, which is far away from an upward slope main beam, and the automatic correction of the deflected pier is realized through the cooperation of the downward slope stop block and the downward slope diaphragm plate, so that excessive deflection of the pier is prevented. The deviation preventing device can solve the problem that the bridge pier of the existing high pier is deviated upwards in the processes of bridge expansion caused by heat and cold contraction caused by deviation exceeding the standard of the bridge, and can automatically correct the bridge pier, so that the process of manually correcting the bridge pier after deviation is omitted, and the purposes of saving manpower and cost can be achieved.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a device for preventing a large longitudinal slope high pier bridge pier from deviating.
Background
The prefabricated simple-support variable continuous beam bridge with medium span is widely applied to mountainous highways, however, the flexible high pier of the bridge can be greatly deviated in the construction or operation process, and particularly, the deviation phenomenon of the pier top of the high pier at the expansion joint position between adjacent joints of the upper structure is more remarkable.
The basin-shaped support of the bridge pier is influenced by the nature of the bridge with a large longitudinal slope, and the mechanical properties of the flexible high pier are determined by the influence of air temperature and the high-frequency resonance of a heavy-duty car, namely: under the condition that the limiting rigidity of the basin-shaped support is low, the longitudinal deviation of the bridge girder can be generated in the upward slope direction no matter the bridge girder is heated and expanded or cooled and contracted, and specific reasons can be seen in journal Guo Tong [1], wang Jianqun [2], great longitudinal slope flexible high pier deviation treatment and safety evaluation [ J ], middle and outer highways, 2016 (2).
At present, most bridge design houses in China do not clearly design a high pier flexible bridge pier longitudinal limiting device when the bridge is designed, only a brief description is provided for installing the longitudinal limiting device after bridge construction is finished, but because no clear design drawing and no ready limiting device are available for purchase in the market, a general construction unit is not additionally provided with the longitudinal limiting device after the bridge construction is finished, so that high pier deflection overrun occurs in one or two years after operation, a capping beam and a girder have longitudinal deflection overrun in the uphill direction, damage to bridge supports and expansion joints and damage are caused, adverse stress at the bottom of the high pier is increased, bending moment stress is increased rapidly, the bridge pier bottom is cracked, and the bridge bearing capacity is reduced. The construction cost for treating pier deviation and reinforcement limit is high, the construction difficulty is high, and huge economic loss and economic benefit are caused for operation units and local economy.
The chinese patent application No. 201510415496.3 discloses a high pier bridge pier top displacement spring limiter, but it has the following disadvantages:
(1) The damage to the bridge girder structure is larger: the stiffening steel plate A1 is fixedly connected with the beam body in a welding nail mode and fixedly connected with the beam body, the stiffening rib B1 is also a stressed component, and the stiffening rib B1 is estimated to have 80-200KN horizontal force under the influence of temperature difference, so that the beam body structure is damaged.
(2) The structure drops, and the limit appears failing: in the existing common actual bridge structure, when the bridge is in a heavy-duty car and the temperature difference environment is large, the space between the bottom surface of the beam body and the top surface of the capping beam is changed, the stress of the beam body is changed, the bending moment is changed, the welding nails are easily loosened and fall off under the action force of the main beam, and the stiffening rib B1 is inevitably loosened and falls off for a long time, so that the limit failure occurs.
In view of the above, there is an urgent need for a device for preventing the deviation of piers in high pier on large longitudinal slopes to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a device for preventing the deviation of a pier of a high pier bridge with a large slope, which comprises the following specific technical scheme:
the utility model provides a high mound bridge pier off-set device of big longitudinal slope, the high mound bridge of big longitudinal slope includes pier, bent cap, upslope to girder and downhill path girder, the bent cap sets up on the pier, the upslope sets up on the bent cap through upslope to the support to the girder, the downhill path is to the girder through downhill path to the support setting on the bent cap, leaves the expansion joint between upslope to girder and the downhill path girder, the high mound bridge pier off-set device of big longitudinal slope of prevention includes at least a set of off-set device, the off-set device of preventing is fixed to be set up on the bent cap, be equipped with downhill path dog on the off-set device, be equipped with downhill path diaphragm on the downhill path girder, downhill path dog is located one side that downhill path diaphragm kept away from upslope to girder, realizes carrying out automatic correction with the pier after off-set through the cooperation of downhill path diaphragm to realize preventing excessive off-set.
The above technical scheme is preferred, prevent the deviation device includes downhill direction locating part, downhill direction locating part includes downhill direction locating part body and sets up downhill direction dog on downhill direction locating part body, downhill direction locating part through downhill direction locating part body set up in on the bent cap.
The preferable in the above technical scheme, prevent off normal device still includes the ascending slope to locating part, the ascending slope is to the locating part including ascending slope to locating part body and set up the ascending slope to the dog on ascending slope to locating part body, be equipped with ascending slope to the diaphragm on the ascending slope to the girder, ascending slope to the dog through ascending slope to locating part body set up in just be located on the bent cap and be located one side that the descending slope was kept away from to the girder to the diaphragm, realize preventing through the cooperation of ascending slope to diaphragm and ascending slope to the dog that the pier is rectified excessively.
The technical scheme is that the upper slope limiting part body and the lower slope limiting part body are respectively arranged on two sides of the length direction of the bent cap, the upper slope limiting part body and the lower slope limiting part body are of L-shaped structures and are symmetrically arranged, the upper slope limiting part body is matched with one set of right-angle sides on the bent cap to realize that the upper slope limiting part body is arranged on the bent cap, and the lower slope limiting part body is matched with the other set of right-angle sides on the bent cap to realize that the lower slope limiting part body is arranged on the bent cap.
The technical scheme is that the anti-deviation device further comprises at least one pull rod and fastening pieces arranged at two ends of the pull rod, through holes are formed in the ascending limiting piece body and the descending limiting piece body, the pull rod penetrates through the through holes in the ascending limiting piece body and the descending limiting piece body in sequence, and the ascending limiting piece body and the descending limiting piece body are matched with the fastening pieces at two ends to clamp the capping beam.
In the above technical scheme, the downhill stopper and the upward stopper are respectively and correspondingly arranged on the downhill stopper body and the upward stopper body on the capping beam in a welding mode.
In the above technical scheme, the materials of the upward slope limit part body, the downward slope check block and the upward slope check block are all high-strength steel plates.
The technical scheme of the invention has the following beneficial effects:
(1) The device for preventing the pier from deviating of the high pier bridge with the large longitudinal slope comprises at least one group of deviation preventing devices, and the automatic correction of the pier after deviation is realized by matching the downhill stop block on the deviation preventing devices with the downhill diaphragm on the downhill girder, so that the excessive deviation of the pier is prevented, and the adverse stress condition of the pier bottom when the deviation is overlarge due to the displacement of the pier top is prevented. Bridge thermal expansion, expansion joint diminish, the pier takes place the off normal to the slope upward in the scope of allowing, and downhill direction dog contacts with downhill direction diaphragm, and when bridge shrinkage, expansion joint grow, downhill direction girder shrink, downhill direction diaphragm and downhill direction dog cooperation correct the pier (here the pier can additionally receive the downhill direction force that downhill direction diaphragm applyed), further downhill direction off normal when preventing to take place the pier shrinkage, and then prevent excessive off normal of pier. The deviation preventing device can solve the problem that the bridge pier of the existing high pier is deviated upwards in the processes of bridge expansion caused by heat and cold contraction caused by deviation exceeding the standard of the bridge, and can automatically correct the bridge pier, so that the process of manually correcting the bridge pier after deviation is omitted, and the purposes of saving manpower and cost can be achieved.
(2) The anti-deviation device further comprises an upward limit part, wherein the upward limit part comprises an upward limit part body and an upward stop block arranged on the upward limit part body, and the situation of excessive correction in the process of correcting the bridge pier can be prevented through the upward diaphragm plate and the upward stop block, namely, when the downward diaphragm plate and the downward stop block are matched to correct the bridge pier, if the bridge pier excessively moves downwards, the upward diaphragm plate and the upward stop block can contact to limit the bridge pier. Meanwhile, the situation that the girder of the bridge falls off can be prevented by matching the upward slope stop block and the downward slope stop block, and particularly, the situation that the girder falls off can be prevented when an earthquake occurs.
(3) The upward-slope limiting part body and the downward-slope limiting part body in the deviation preventing device are of L-shaped structures, and the upward-slope limiting part body and the downward-slope limiting part body clamp the bent cap through the pull rod and the fastening piece.
(4) In the deviation preventing device, the downhill stop block and the upward stop block are correspondingly arranged on the downhill stop piece body and the upward stop piece body which are positioned on the capping beam in a welding mode, namely: after the upward slope limiting part body and the downward slope limiting part body are arranged on the capping beam, the downward slope stop block and the upward slope stop block are correspondingly arranged on the downward slope limiting part body and the upward slope limiting part body in a welding mode. Therefore, the distance between the downhill stop block and the downhill diaphragm plate and the distance between the uphill stop block and the uphill diaphragm plate can be determined according to actual conditions, the requirements of different bridges and different application conditions are met, the deviation prevention device can prevent the bridge pier from being out of limit (namely excessive deviation) and correct the bridge pier after deviation.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic illustration of an anti-misalignment device of the present invention;
FIG. 2 is a schematic diagram of the anti-deviation device of FIG. 1;
wherein, 1, bridge pier, 2, capping beam, 3, downward limit part, 4, upward limit part, 5, fastener, 6, pull rod, 7, upward stop block, 8, upward girder, 9, a downhill girder, 10, a downhill stop block, 11, a downhill diaphragm plate, 12, a downhill support, 13, an uphill support, 14, an uphill diaphragm plate, 15 and an expansion joint device.
Detailed Description
Embodiments of the invention are described in detail below with reference to the attached drawings, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.
Example 1:
referring to fig. 1-2, a device for preventing pier deflection of a high pier bridge with a large longitudinal slope, the high pier bridge with a large longitudinal slope comprises a pier 1, a capping beam 2, an upward girder 8 and a downward girder 9, wherein the capping beam 2 is arranged on the pier 1, the upward girder 8 is arranged on the capping beam 2 through an upward support 13, the downward girder 9 is arranged on the capping beam through a downward support 12, an expansion joint is reserved between the upward girder 8 and the downward girder 9, referring to fig. 1, an expansion joint device 15 is arranged at the expansion joint, and the expansion joint device 15 can refer to the prior art.
The device for preventing the deviation of the bridge pier of the high pier of the large longitudinal slope comprises at least one group of deviation preventing devices, the deviation preventing devices are fixedly arranged on the capping beam 2, the deviation preventing devices are provided with downhill stop blocks 10, the downhill main beams 9 are provided with downhill transverse partition plates 11, the downhill stop blocks 10 are positioned on one side of the downhill transverse partition plates 11 away from the uphill main beams 8, and the automatic correction of the bridge pier 1 after the deviation is realized through the cooperation of the downhill stop blocks 10 and the downhill transverse partition plates 11, so that the excessive deviation of the bridge pier 1 is prevented.
The anti-deviation device comprises a downhill limiting part 3, the downhill limiting part 3 comprises a downhill limiting part body and a downhill stop block 10 arranged on the downhill limiting part body, and the downhill limiting part 3 is arranged on the capping beam 2 through the downhill limiting part body.
The anti-deviation device further comprises an upward slope limiting piece 4, the upward slope limiting piece 4 comprises an upward slope limiting piece body and an upward slope baffle 7 arranged on the upward slope limiting piece body, an upward slope transverse baffle 14 is arranged on the upward slope main beam 8, the upward slope baffle 7 is arranged on the capping beam 2 through the upward slope limiting piece body and is located on one side, far away from the downward slope main beam 9, of the upward slope transverse baffle 14, and the excessive correction to the pier 1 is prevented through the cooperation of the upward slope transverse baffle 14 and the upward slope baffle 7.
Bridge thermal expansion, expansion joint diminish, the pier takes place the off normal to the slope upward in the scope of allowing, and downhill direction dog contacts with downhill direction diaphragm, and when bridge shrinkage, expansion joint grow, downhill direction girder shrink, downhill direction diaphragm and downhill direction dog cooperation correct the pier (here the pier can additionally receive the downhill direction force that downhill direction diaphragm applyed), further downhill direction off normal when preventing to take place the pier shrinkage, and then prevent excessive off normal of pier.
The setting up uphill diaphragm and the upward dog can prevent to correct excessive condition in the in-process of correcting the pier, and downhill diaphragm and downhill dog cooperation are correcting the pier promptly, if excessive downhill movement of pier, upward diaphragm and upward dog will contact and carry out spacing.
The downhill stopper 10 and the uphill stopper 7 are correspondingly arranged on the downhill stopper body and the uphill stopper body on the capping beam 2 in a welding mode, namely: after the upward slope limiting part body and the downward slope limiting part body are arranged on the capping beam 2, the downward slope stop block 10 and the upward slope stop block 7 are correspondingly arranged on the downward slope limiting part body and the upward slope limiting part body in a welding mode.
The spacing between the downhill stop and the downhill diaphragm and the spacing between the uphill stop and the uphill diaphragm should be set according to the practical situation of the bridge application, and can be specifically set by referring to the Highway engineering quality inspection assessment Standard (JTGF 80/1-2004) and the Highway bridge technical Condition assessment Standard (JTG/T H21-2011).
Referring to fig. 1, the up-slope limiting member body and the down-slope limiting member body are respectively arranged at two sides of the length direction of the capping beam 2, a person skilled in the art can understand that the length direction of the capping beam is perpendicular to the length direction of the bridge, the capping beam plays a role in supporting the girder body, the up-slope limiting member body and the down-slope limiting member body are in an L-shaped structure and are symmetrically arranged, the up-slope limiting member body is matched with a set of right-angle sides on the capping beam 2 to realize that the up-slope limiting member body is arranged on the capping beam 2, and the down-slope limiting member body is matched with another set of right-angle sides on the capping beam 2 to realize that the down-slope limiting member body is arranged on the capping beam 2.
The anti-deviation device further comprises at least one pull rod 6 and fastening pieces 5 arranged at two ends of the pull rod 6, through holes are formed in the ascending limiting piece body and the descending limiting piece body, the pull rod 6 sequentially penetrates through the through holes in the ascending limiting piece body and the descending limiting piece body, and the fastening pieces 5 matched with the two ends achieve that the ascending limiting piece body and the descending limiting piece body clamp the capping beam 2.
Referring to fig. 2, three through holes are formed in the downhill limiting member body and the uphill limiting member body, the downhill limiting member body and the uphill limiting member body are connected through three pull rods, and the material of the pull rods is preferably 40Cr.
Preferably, the fastening piece is a nut, threads are arranged at two ends of the pull rod, and the nut is matched with the threads on the pull rod to realize fastening.
The materials of the upward slope limiting part body, the downward slope stop block 10 and the upward slope stop block 7 are all high-strength steel plates. The high-strength steel plate is specifically Q460 steel.
The technical scheme of the embodiment is specifically as follows:
and determining the number of the deviation prevention devices according to the actual conditions of the bridge and determining the mounting positions on the bent cap.
The upward slope limiting part body and the downward slope limiting part body are respectively arranged on two groups of right-angle edges of the capping beam, the pull rod sequentially penetrates through the through holes in the upward slope limiting part body and the downward slope limiting part body, two ends of the pull rod are locked by nuts, and the capping beam is clamped by the upward slope limiting part body and the downward slope limiting part body.
According to actual conditions, the downhill stopper 10 and the uphill stopper 7 are correspondingly arranged on the downhill stopper body and the uphill stopper body in a welding mode, and the distance between the downhill stopper and the downhill diaphragm and the distance between the uphill stopper and the uphill diaphragm are required to be controlled in the process.
The technical scheme of the invention has the following effects:
the deviation preventing device can solve the problem that the bridge pier of the existing high pier is deviated upwards in the processes of bridge expansion caused by heat and cold contraction caused by deviation exceeding the standard of the bridge, and can automatically correct the bridge pier, so that the process of manually correcting the bridge pier after deviation is omitted, and the purposes of saving manpower and cost can be achieved.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a prevent high pier deviation device of big longitudinal slope, the high pier bridge of big longitudinal slope includes pier (1), bent cap (2), upward slope girder (8) and downhill girder (9), bent cap (2) set up on pier (1), upward slope girder (8) set up on bent cap (2) through upward slope support (13), downhill girder (9) set up on the bent cap through downhill support (12), leave the expansion joint between upward slope girder (8) and downhill girder (9), characterized in that, include at least one set of anti-deviation device, anti-deviation device is fixed to be set up on bent cap (2), be equipped with downhill slope direction baffle (10) on the anti-deviation device, be equipped with downhill direction diaphragm (11) on downhill direction girder (9), downhill direction baffle (10) are located downhill direction diaphragm (11) and keep away from upward slope girder (8) one side, realize through automatic cooperation of downhill direction baffle (10) and downhill direction baffle (11) with pier (1) and prevent excessive correction;
the anti-deviation device comprises a downward slope limiting piece (3), wherein the downward slope limiting piece (3) comprises a downward slope limiting piece body and a downward slope stop block (10) arranged on the downward slope limiting piece body, and the downward slope limiting piece (3) is arranged on the capping beam (2) through the downward slope limiting piece body;
the anti-deviation device further comprises an upward slope limiting part (4), the upward slope limiting part (4) comprises an upward slope limiting part body and an upward slope stop block (7) arranged on the upward slope limiting part body, an upward slope transverse baffle plate (14) is arranged on the upward slope main beam (8), the upward slope stop block (7) is arranged on the capping beam (2) through the upward slope limiting part body and is positioned on one side, far away from the downward slope main beam (9), of the upward slope transverse baffle plate (14), and excessive correction on the bridge pier (1) is prevented through the cooperation of the upward slope transverse baffle plate (14) and the upward slope stop block (7);
the up-slope limiting part body and the down-slope limiting part body are respectively arranged on two sides of the length direction of the bent cap (2), the up-slope limiting part body and the down-slope limiting part body are of L-shaped structures and are symmetrically arranged, the up-slope limiting part body is matched with one set of right-angle sides on the bent cap (2) to achieve that the up-slope limiting part body is arranged on the bent cap (2), and the down-slope limiting part body is matched with the other set of right-angle sides on the bent cap (2) to achieve that the down-slope limiting part body is arranged on the bent cap (2).
2. The device for preventing deflection of a pier bridge on a large longitudinal slope according to claim 1, further comprising at least one pull rod (6) and fastening pieces (5) arranged at two ends of the pull rod (6), wherein the upward-slope limiting piece body and the downward-slope limiting piece body are respectively provided with a through hole, the pull rod (6) sequentially penetrates through the through holes in the upward-slope limiting piece body and the downward-slope limiting piece body, and the fastening pieces (5) at two ends are matched to realize that the upward-slope limiting piece body and the downward-slope limiting piece body clamp the capping beam (2).
3. The device for preventing the deviation of the pier of the high pier on the large longitudinal slope according to claim 2, wherein the downhill stopper (10) and the upward stopper (7) are correspondingly arranged on the downhill stopper body and the upward stopper body which are positioned on the capping beam (2) in a welding mode.
4. The device for preventing the deflection of the pier of the high pier on the large longitudinal slope according to claim 2, wherein the upward slope limiting piece body, the downward slope stop block (10) and the upward slope stop block (7) are all made of high-strength steel plates.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910725496.1A CN110396913B (en) | 2019-08-07 | 2019-08-07 | Device for preventing pier from deviating in high pier bridge of large longitudinal slope |
| PCT/CN2019/111167 WO2021022671A1 (en) | 2019-08-07 | 2019-10-15 | Device for preventing pier deviation of high-pier bridge having large longitudinal slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910725496.1A CN110396913B (en) | 2019-08-07 | 2019-08-07 | Device for preventing pier from deviating in high pier bridge of large longitudinal slope |
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| CN110396913A CN110396913A (en) | 2019-11-01 |
| CN110396913B true CN110396913B (en) | 2023-12-22 |
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| CN201910725496.1A Active CN110396913B (en) | 2019-08-07 | 2019-08-07 | Device for preventing pier from deviating in high pier bridge of large longitudinal slope |
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| CN111322996B (en) * | 2020-03-10 | 2021-10-26 | 中国十七冶集团有限公司 | Column template gradient control structure by laser pointing method and use method thereof |
| CN112376387B (en) * | 2020-11-05 | 2022-09-16 | 贵州路桥集团有限公司 | Reinforcing and anti-overturning device of upper bearing type viaduct reinforced concrete composite beam |
| CN113123217A (en) * | 2021-04-19 | 2021-07-16 | 甘肃省交通规划勘察设计院股份有限公司 | Longitudinal anti-seismic stop block for flexible pier and bridge and design method |
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