CN109680603B - Anti-creeping and anti-overturning curved beam bridge support arrangement mode and support structure thereof - Google Patents
Anti-creeping and anti-overturning curved beam bridge support arrangement mode and support structure thereof Download PDFInfo
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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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Abstract
The invention discloses an anti-creeping and anti-overturning curved beam bridge support arrangement mode, which realizes the reset of a curved bridge after transverse creeping through a transverse self-resetting support, controls a box girder to transversely rotate greatly through a tension and compression support, realizes the classification control of the overturning deformation of the box girder, uses one middle support as a fixed support, and arranges transverse self-resetting supports on the other middle supports to avoid the overlarge horizontal rigid body translation of the box girder; the beam end is provided with a tension and compression support to control the rotation of the rigid body, thereby avoiding the rotation of the rigid body which may cause overturn. The four supports arranged in the invention are respectively a fixed support, a longitudinal translation tension-compression support, a transverse self-reset support and a creeping tension-compression support, and the radius of the spherical surface of the self-reset support is determined by the requirements of the transverse allowable creeping size, creeping height and support bearing capacity. The invention can be used for assisting the anti-creeping of the curved beam bridge, realizing the classification control of the overturning deformation of the box girder and providing a scientific and economic solution for improving the anti-creeping capacity and the overturning bearing capacity of the curved beam bridge.
Description
Technical Field
The invention belongs to the technical field of bridge engineering, and particularly relates to an anti-creeping and anti-overturning curved beam bridge support arrangement mode and a support structure thereof.
Background
With the rapid development of high-grade roads and urban roads in China, viaducts and urban overpasses are more and more established; the elevated structure and the overpass structure present the characteristics of bending, slope, inclination, abnormity and the like due to the limitation of landform and buildings; compared with a straight-line beam bridge, the curve beam bridge has stronger adaptability to the terrain and can be more suitable for the complicated linear requirement. Therefore, in high-grade highways and urban roads, the curved beam bridge can realize traffic connection in all aspects, is suitable for the requirement of complex road conditions, and is an important bridge type in modern traffic engineering.
In recent years, serious casualties and economic losses caused by climbing, moving and overturning accidents of multiple bridges become one of the research hotspot problems of bridge engineering; compared with a linear beam bridge, the curved box beam bridge is more complex in stress caused by bending-torsion coupling, and the anti-creeping and overturning research of the curved beam bridge has stronger representativeness. In addition, the characteristics of the curved beam bridge determine that the centrifugal force of the vehicle can cause transverse creeping deformation, and the expansion joint and the support are sheared and damaged, the shockproof stop block is crushed, the pier stud is bent and cracked and the like in serious conditions, so that the overturning probability is further increased. In fact, the horizontal deformations of curvilinear bridges consist, on the one hand, of centrifugal forces causing a daily and monthly progressive climb, and, on the other hand, during the overturning rotation, also instantaneous transverse horizontal deformations will occur, both of which have an effect on the bridge overturning.
The existing arrangement mode of the curved beam bridge support can only meet the requirements of small deformation of the bridge in the longitudinal and transverse horizontal directions, and cannot effectively control large rotation of a curved beam bridge transverse rigid body and effectively dissipate transverse horizontal deformation generated by centrifugal force. From the research of the existing support, the research of various energy consumption and self-resetting supports is well advanced, but an anti-overturning support and an arrangement designed according to the deformation characteristic of a curved beam bridge are lacked.
The conventional curved beam bridge support arrangement mode is not that resettable supports are adopted for arrangement, and as shown in fig. 8, supports arranged in the conventional curved bridge support arrangement are respectively a one-way sliding support, a two-way sliding support and a fixed support. In the existing support arrangement, only small deformation in the longitudinal direction and the transverse direction of the bridge is met, the problem of long-term and long-term accumulated climbing of the bridge cannot be solved, and the problem of transverse horizontal deformation of the bridge caused by centrifugal force of a vehicle cannot be solved; therefore, as the service time of the bridge is prolonged, the bent bridge can slowly creep, and if the creep amount reaches the limit of bridge overturning, bridge accidents can possibly occur. In the existing support arrangement, when a bent bridge rotates transversely and rigidly, the support tends to be empty; if the transverse rigid body rotating force is large, the bearing does not provide bearing capacity any more when the bearing is completely emptied, and the possibility of overturning damage of the bridge is greatly increased.
In addition, the supports commonly adopted in the existing domestic highway bridge comprise a plate type rubber support, a basin type rubber support and a spherical support, and the supports have the characteristic of flexible rotation in all directions, but have no capacity of resisting overturning and self-resetting. At present, pull rod type spherical supports with pulling and loading capacity are designed in China, the research on various energy consumption and self-resetting supports is well developed, but the structural form is still complex.
Therefore, in combination with the deformation characteristics of the curved beam bridge, it is essential to design a corresponding anti-overturning self-resetting support and a new arrangement mode of the support of the curved beam bridge.
Disclosure of Invention
In view of the above, the invention provides an anti-creeping and anti-overturning curved beam bridge support arrangement mode and a support structure thereof, which can be used for assisting the anti-creeping of a curved beam bridge, realizing the classification control of the overturning deformation of a box girder and providing a scientific and economic solution for improving the anti-creeping and overturning bearing capacity of the curved beam bridge.
The utility model provides a curve beam bridge support arrangement mode that anti-creep topples, set for four position points in proper order to correspond to A ~ D from curve beam bridge left end portion to right end portion equidistance promptly, every position point arranges two supports of installation along the cross bridge between roof beam body and pier, wherein two supports of position point A adopt vertical translation to draw respectively to press the support and can creep and press the support, two supports of position point B adopt fixed support and horizontal self-reset support respectively, two supports of position point C all adopt horizontal self-reset support, two supports of position point D adopt vertical translation to draw respectively to press the support and can creep and press the support.
Further, fixing support comprises undersetting board, spherical crown welt and upper bracket board stack from bottom to top in proper order, and the upper bracket board passes through anchor assembly and roof beam body coupling, and the undersetting board passes through anchor assembly to be connected with the pier, and the undersetting board is the curved surface with the contact surface of spherical crown welt, and the upper bracket board is peripheral downwardly extending all around to form the baffle in order to tightly detain the undersetting board for upper bracket board and the unable relative movement that takes place of undersetting board.
Furthermore, the longitudinal translational tension-compression support is formed by superposing a tensile spherical plate, a lower support plate, a spherical crown lining plate and an upper support plate from bottom to top in sequence, the upper support plate is connected with the beam body through an anchoring part, the lower support plate is connected with the abutment through an anchoring part, the contact surfaces of the lower support plate, the spherical crown lining plate and the tensile spherical plate are curved surfaces, two transverse sides of the upper support plate are provided with check blocks, the check blocks are fixedly connected with the upper support plate through bolts to tightly buckle the spherical crown lining plate, so that the spherical crown lining plate and the upper support plate cannot transversely slide relatively (longitudinally not arranged, and the spherical crown lining plate and the upper support plate can longitudinally slide freely), a pull rod is arranged in the middle of the support to connect the upper support plate and the lower support plate (when the support is subjected to large pressure, a certain compression resistance effect can be achieved, and when the support is subjected to large pressure at the far end of the support, the tensile ball plate is tightly buckled with the bottom end of the pull rod so as to stabilize the pull rod when the support has a falling-off trend.
Furthermore, the transverse self-resetting support is formed by superposing a lower support plate, a spherical crown lining plate, a middle lining plate and an upper support plate from bottom to top in sequence, the upper support plate is connected with the beam body through an anchoring part, the lower support plate is connected with the abutment through an anchoring part, and the edges of two transverse sides of the upper support plate extend downwards to form a baffle plate to tightly buckle the middle lining plate, so that the upper support plate and the middle lining plate cannot slide relatively in the transverse direction (can freely translate in the longitudinal direction); the edges of two longitudinal sides of the lower support plate extend upwards to form a baffle plate to tightly buckle the spherical crown lining plate, so that the lower support plate and the spherical crown lining plate cannot slide relatively in the longitudinal direction (can climb relatively in the transverse direction), the contact surface of the lower support plate and the spherical crown lining plate is a curved surface, and a limiting block is arranged at a corresponding transverse position of the lower support plate to limit the transverse climbing amount of the spherical crown lining plate; therefore, under the action of the centrifugal force of a vehicle on the bridge deck, after the spherical crown lining plate and the lower support plate slide, the support can automatically reset under the action of gravity, and meanwhile, the support is transversely curved, so that more energy generated by creeping can be consumed through friction, and the creeping amount of the box girder can be recovered after the temperature is reduced or the load disappears; the contact surface of the middle lining plate and the spherical crown lining plate is a curved surface, the curvature radius R2 of the contact surface is smaller than the curvature radius R1 of the contact surface of the lower support plate and the spherical crown lining plate, so that the relative friction coefficient of the tetrafluoroethylene sliding plate is larger, the upper and lower seat plates can translate or climb with the middle part first, and the spherical contact of the middle lining plate and the spherical crown lining plate is used for reducing the influence of accidental earthquake action.
Furthermore, the climbing tension-compression support is formed by overlapping a lower support plate, a spherical crown lining plate, a middle lining plate and an upper support plate from bottom to top in sequence, the upper support plate is connected with a beam body through an anchoring part, the lower support plate is connected with an abutment through an anchoring part, the edges of the two transverse sides of the upper support plate extend downwards to form a baffle plate to tightly buckle the middle lining plate, so that the upper support plate and the middle lining plate cannot slide relatively in the transverse direction (can freely translate in the longitudinal direction), the bottom of the baffle plate is provided with a tension-resistant plate, and the tension-resistant plate extends inwards to buckle with a pre-opened notch on the middle lining plate (so that the tension influence can be effectively relieved; the edges of two longitudinal sides of the lower support plate extend upwards to form a baffle plate to tightly buckle the spherical crown lining plate, so that the lower support plate and the spherical crown lining plate cannot slide relative to each other longitudinally (can climb relative to each other transversely), the top of the baffle plate is provided with a tensile plate, and the tensile plate extends inwards to buckle with a pre-opened notch on the spherical crown lining plate (so that the possibility of the support falling off is reduced when the support is in a tension trend); the contact surface of the lower support plate and the spherical crown lining plate is a curved surface, a limit block is arranged at the transverse corresponding position of the lower support plate and used for limiting the transverse climbing amount of the spherical crown lining plate, a pull rod is arranged at the middle position of the support and used for connecting the upper support plate and the lower support plate, the contact surface of the middle lining plate and the spherical crown lining plate is a curved surface, and the curvature radius R2 of the contact surface is smaller than the curvature radius R1 of the contact surface of the lower support plate and the spherical crown lining plate.
Further, the curvature radius R1 of the contact surface of the lower support plate and the spherical cap liner plate is calculated and determined by the following formula:
wherein: suTo design a given maximum climbing amount, svTo design a given maximum creep amount.
Furthermore, the horizontal self-resetting support is adopted to consume horizontal displacement caused by temperature rise or centrifugal force through self weight, and the box girder is reset through gravity when the temperature is reduced or the load is eliminated, so that the superposition effect caused by multiple climbing movements is prevented.
Furthermore, the invention can control different deformations in the overturning process of the bridge in a classified manner, controls the rotation of a deformation body caused by rigid body rotation and torsion in the overturning process by the tension and compression support, plays a role in resisting the overturning of the bridge, resists the creeping of the bridge through the middle curved surface self-resetting support, plays a role in resisting the creeping of the bridge, and realizes the classified control of the overturning deformation of the box girder.
The anti-creeping and anti-overturning bent box girder bridge support and the arrangement mode can control different deformations of a bridge in an overturning process in a classified mode, the tension and compression support is used for controlling the rotation of a deformation body caused by rigid body rotation and torsion in the overturning process, the anti-creeping effect is achieved on the bridge body, the transverse creeping of the bridge body is resisted through the middle transverse self-resetting support, the anti-creeping effect is achieved on the bridge body, and the classified control of the overturning deformation of the box girder is achieved. The curvature radius of the lower seat plate of the transverse self-resetting support and the lower surface of the spherical crown lining plate can be obtained by calculation according to a formula under the condition that the designed maximum climbing value and the designed maximum climbing amount are known, and then the limit stop is arranged at the corresponding position in the lower seat plate according to the designed maximum climbing value and the designed maximum climbing value to control the transverse climbing amount of the spherical crown lining plate. After creeping, the pier is designed and calculated according to eccentric compression components by superposing horizontal force and axial force which are possibly generated by creeping of the box girder in the operation process.
According to the technical scheme, the stress and deformation characteristics of the curved beam bridge are grasped, different functions and special arrangement forms of various supports are utilized to realize classification control on bridge overturning and creeping based on the principle of creeping and overturning, and a scientific and economic solution is provided for improving the anti-creeping and overturning bearing capacity of the curved beam bridge. Therefore, the invention has the following beneficial technical effects:
1. the invention provides a novel systematic support arrangement mode, wherein four tension-compression supports at two ends can realize anti-overturning, and three transverse self-resetting supports in the middle can realize anti-creeping movement, so that different deformations in the bridge overturning process can be controlled in a classified manner, the tension-compression supports are used for controlling rigid rotation and deformation rotation caused by torsion in the overturning process, the bridge is subjected to anti-overturning effect, the bridge is subjected to anti-creeping movement by resisting creeping movement of the bridge through the transverse self-resetting supports in the middle, and the classification control of the box girder overturning deformation is realized.
2. The invention uses the transverse self-resetting support to consume the horizontal displacement generated by temperature rise or centrifugal force through self weight, and resets the box girder through gravity when the temperature is reduced or the load is eliminated, thereby preventing the deformation superposition generated by multiple climbing movements.
3. The support is simple in structure, easy to assemble and construct and capable of being widely applied to bent bridge support arrangement.
Drawings
Fig. 1 is a schematic view of an arrangement mode of an anti-creeping and anti-overturning curved beam bridge support, wherein: 1-fixing a support; 2-transverse self-resetting support; 3, longitudinally translating, pulling and pressing the support; 4-the support can be moved in an climbing way.
Fig. 2(a) and 2(b) are schematic diagrams corresponding to the transverse and longitudinal sections of the fixing mount, in which: 1-upper anchoring element; 2-an upper support plate; 3-spherical cap lining board; 4-lower support plate; 5-lower anchor.
Fig. 3(a) and 3(b) are schematic diagrams of transverse and longitudinal sections of the longitudinal translation pulling-pressing support, wherein: 1-upper anchoring element; 2-an upper support plate; 3-spherical cap lining board; 4-lower support plate; 5, a tensile ball plate; 6, a pull rod; 7-lower anchor.
Fig. 4(a) and 4(b) are corresponding transverse and longitudinal sectional views of a transverse self-resetting support, wherein: 1-upper anchoring element; 2-an upper support plate; 3-intermediate lining plate; 4-spherical cap lining board; 5-lower support plate; 6-lower anchor.
Fig. 5(a) and 5(b) are schematic diagrams corresponding to the transverse and longitudinal sections of the creeping tension-compression support, wherein: 1-upper anchoring element; 2-an upper support plate; 3-intermediate lining plate; 4-spherical cap lining board; 5, a pull rod; 6-lower support plate; 7-lower anchor.
Fig. 6 is a schematic view of a transverse self-resetting support with a limit stop.
FIG. 7 is a schematic diagram of the principle of curvature radius calculation of the transverse self-resetting support.
Fig. 8 is a schematic view of a conventional curved beam bridge.
Detailed Description
In order to more specifically describe the present invention, the following detailed description is provided for the technical solution of the present invention with reference to the accompanying drawings and the specific embodiments.
As shown in fig. 1, the transverse large rotation of the overturn of the box girder is mainly the superposition of the rotation of the deformation body and the rotation of the rigid body, so the arrangement mode of the novel curved bridge anti-creeping support needs a system to control the rotation of the rigid body, the rotation of the deformation body and the translation of the upper structure. Firstly, the middle support No. 1 is a fixed support, the support No. 2 is a transverse self-resetting support, the support No. 3 is a longitudinal translation tension and compression support, and the support No. 4 is a tension and compression support capable of climbing. And secondly, the end supports are all tension-compression supports, one middle support is a fixed support, and the other three supports are transverse self-resetting supports which allow longitudinal free translation and have the function of self-resetting for transverse crawling. The transverse self-resetting abutment allows deformation when the temperature rises or is subjected to centrifugal force. The climbing amount of the box girder is recovered when the temperature is reduced or the load disappears, so that the superposition effect generated by multiple climbing is prevented; the direction of the arrows shown in fig. 1 is the direction in which the holder is movable and the direction in which it is self-resetting.
Therefore, the anti-creeping and anti-overturning curved box girder bridge support and the arrangement mode can be used for realizing classification control of creeping, overturning and deformation of the box girder and improving the anti-creeping bearing capacity of the curved box girder bridge; the four support structures are as follows:
as shown in fig. 2(a) and 2(b), the fixing support comprises an upper support plate 2 (containing a mirror surface stainless steel plate) connected with the upper box girder and a lower support plate 4 (containing a spherical tetrafluoro sliding plate) connected with the lower pier body, a spherical crown lining plate 3 (containing a plane tetrafluoro sliding plate) is arranged in the middle, the upper support plate and the lower support plate are respectively connected with the upper beam body and the lower pier body through anchoring parts 1 and 5, wherein the periphery of the edge of the upper support plate 2 is lengthened and vertically extended downwards to form a baffle plate, and the upper support plate and the lower support plate are prevented from moving relatively.
As shown in fig. 3(a) and fig. 3(b), the longitudinal translational pulling-pressing support comprises an upper support plate 2 (containing a mirror surface stainless steel plate and a longitudinal tensile plate) and a lower support plate 4 (containing a large spherical tetrafluoro sliding plate) which are respectively connected with the upper beam body and the lower pier table, a spherical crown lining plate 3 (containing a plane tetrafluoro sliding plate) is arranged in the middle, a stop block is transversely arranged in the middle, the stop block is fixedly connected with the upper support plate through a bolt, the spherical crown lining plate 3 is blocked, the spherical crown lining plate 3 and the upper support plate 2 cannot transversely slide relatively, and the longitudinal direction is not arranged, so that the spherical crown lining plate 3 and the upper support plate 2 can longitudinally slide freely. The support center is equipped with pull rod 6, connects upper support board 2 and lower bearing plate 4, when the support received great pressure, can play certain resistance to compression effect, when the support distal end received great pressure to lead to the support to take place to come to nothing trend, can provide decurrent pulling force for the support, and tensile ball board 5 can make the support take place to take place better firm pull rod 6 when taking place to come to nothing trend.
As shown in fig. 4(a) and 4(b), the transverse self-resetting support comprises an upper support plate 2 (containing a mirror surface stainless steel plate) and a lower support plate 5 (containing a mirror surface stainless steel plate) which are respectively connected with an upper beam body and a lower pier table, a middle lining plate 3 and a spherical crown lining plate 4 are arranged in the middle, wherein the upper support plate 2 and the middle lining plate 3 are constructed to enable relative sliding in the transverse direction and can translate in the longitudinal direction freely, the lower support plate 5 and the spherical crown lining plate 4 are constructed to enable relative sliding in the longitudinal direction but can climb in the transverse direction, and the transverse climbing surfaces of the spherical crown lining plate 4 and the lower support plate 5 are curved surfaces, the curvature radius of the curved surfaces is determined by the designed maximum climbing value and maximum climbing value, so that after the spherical crown lining plate 4 and the lower support plate 5 slide under the action of the centrifugal force of a bridge deck vehicle, the support can self-reset under the action of gravity, and the transverse direction is curved surfaces, so that more energy generated by, meanwhile, the climbing amount of the box girder can be recovered after the temperature is reduced or the load disappears. According to the designed maximum climbing value and the designed climbing value, a limit stop needs to be arranged at the corresponding position in the lower support plate 5 to control the transverse climbing amount of the spherical crown lining plate 4; the contact surface of the middle lining plate 3 and the spherical crown lining plate 4 is also a curved surface, the curvature radius of the curved surface is smaller, and the relative friction coefficient of the four fluorine plates is larger, so that the upper and lower seat plates can firstly translate or creep with the middle part, and the spherical contact of the middle lining plate 3 and the spherical crown lining plate 4 is used for reducing the accidental earthquake effect influence.
As shown in fig. 5(a) and 5(b), the tension-compression support capable of climbing is that a tension rod 5 is added in the middle of a transverse self-resetting support, and meanwhile, a tension-resisting plate is arranged on an upper support plate 2 and inserted into a groove of a middle lining plate 3, so that when the support is in a tension trend, the tension influence is more effectively relieved; meanwhile, the inner side of the lower support plate 6 is provided with a groove, the edge of the lower part of the spherical cap lining plate 4 is provided with a bulge, and a tensile structure is also formed, so that when the support is in a tensile trend, the possibility of the support being empty is reduced.
As shown in FIG. 6, the setting position of the limit stop in the transverse self-resetting support at the lower support plate is determined by the transverse maximum climbing design value. As shown in fig. 7, the curvature radius of the lower support plate of the transverse self-resetting support is determined according to the transverse maximum climbing design value and the maximum climbing design value, namely according to the following formula:
it can be found that:
wherein: suTo design the maximum climbing amount, svThe radius of curvature R of the lower seat plate is determined for designing the maximum creep amount.
The embodiments described above are presented to enable a person having ordinary skill in the art to make and use the invention. It will be readily apparent to those skilled in the art that various modifications to the above-described embodiments may be made, and the generic principles defined herein may be applied to other embodiments without the use of inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications to the present invention based on the disclosure of the present invention within the protection scope of the present invention.
Claims (6)
1. The utility model provides a curved beam bridge support arrangement mode that anti-creep topples which characterized in that: setting four position points from the left end to the right end of a curved beam bridge at equal intervals, sequentially corresponding the four position points to A-D, arranging and installing two supports between a beam body and an abutment along a transverse bridge direction at each position point, wherein the two supports at the position point A respectively adopt a longitudinal translation tension and compression support and a creeping tension and compression support, the two supports at the position point B respectively adopt a fixed support and a transverse self-resetting support, the two supports at the position point C respectively adopt a transverse self-resetting support, and the two supports at the position point D respectively adopt a longitudinal translation tension and compression support and a creeping tension and compression support;
the climbing pulling and pressing support is formed by superposing a lower support plate, a spherical crown lining plate, a middle lining plate and an upper support plate from bottom to top in sequence, the upper support plate is connected with a beam body through an anchoring part, the lower support plate is connected with an abutment through an anchoring part, the edges of the two transverse sides of the upper support plate extend downwards to form a baffle plate to tightly buckle the middle lining plate, so that the upper support plate and the middle lining plate cannot slide relative to each other transversely, the bottom of the baffle plate is provided with a tensile plate, and the tensile plate extends inwards to buckle a pre-opened notch on the middle lining plate; the edges of two longitudinal sides of the lower support plate extend upwards to form a baffle plate to tightly buckle the spherical crown lining plate, so that the lower support plate and the spherical crown lining plate cannot slide relatively in the longitudinal direction; the contact surface of the lower support plate and the spherical crown lining plate is a curved surface, a limit block is arranged at the transverse corresponding position of the lower support plate and used for limiting the transverse climbing amount of the spherical crown lining plate, a pull rod is arranged at the middle position of the support and used for connecting the upper support plate and the lower support plate, the contact surface of the middle lining plate and the spherical crown lining plate is a curved surface, and the curvature radius R2 of the contact surface is smaller than the curvature radius R1 of the contact surface of the lower support plate and the spherical crown lining plate.
2. The curvilinear beam bridge support arrangement of claim 1, wherein: fixing support comprises undersetting board, spherical crown welt and upper bracket board stack from bottom to top in proper order, and the upper bracket board passes through anchor assembly and roof beam body coupling, and the undersetting board passes through anchor assembly to be connected with the pier, and the undersetting board is the curved surface with the contact surface of spherical crown welt, and the upper bracket board is peripheral downwardly extending all around to form the baffle in order to tightly detain the undersetting board for upper bracket board and the unable relative movement that takes place of undersetting board.
3. The curvilinear beam bridge support arrangement of claim 1, wherein: vertical translation draws presses support from bottom to top in proper order by the tensile ball board, the undersetting board, spherical crown welt and upper bracket board stack are constituteed, the upper bracket board passes through anchor assembly and roof beam body coupling, the undersetting board passes through anchor assembly and is connected with the pier, the contact surface of undersetting board and spherical crown welt and tensile ball board is the curved surface, the horizontal both sides of upper bracket board are equipped with the dog, the dog passes through bolt and upper bracket board rigid coupling in order to tightly buckle the spherical crown welt, make the spherical crown welt transversely unable emergence relative slip with the upper bracket board, the support intermediate position is equipped with the pull rod in order to connect undersetting board and undersetting board, the pull rod is stabilized when the pull rod bottom is tightly buckled to the tensile ball board so that the support.
4. The curvilinear beam bridge support arrangement of claim 1, wherein: the transverse self-resetting support is formed by superposing a lower support plate, a spherical crown lining plate, a middle lining plate and an upper support plate from bottom to top in sequence, the upper support plate is connected with a beam body through an anchoring part, the lower support plate is connected with a pier through an anchoring part, and the edges of two transverse sides of the upper support plate extend downwards to form a baffle plate to tightly buckle the middle lining plate, so that the upper support plate and the middle lining plate cannot slide transversely; the edges of two longitudinal sides of the lower support plate extend upwards to form a baffle plate to tightly buckle the spherical crown lining plate, so that the lower support plate and the spherical crown lining plate cannot slide relatively in the longitudinal direction, the contact surface of the lower support plate and the spherical crown lining plate is a curved surface, and a limiting block is arranged at a corresponding transverse position of the lower support plate to limit the transverse climbing amount of the spherical crown lining plate; the contact surface of the middle lining plate and the spherical cap lining plate is a curved surface, and the curvature radius R2 of the contact surface is smaller than the curvature radius R1 of the contact surface of the lower support plate and the spherical cap lining plate.
5. A curvilinear beam bridge bearer arrangement according to claim 1 or 4, wherein: the curvature radius R1 of the contact surface of the lower support plate and the spherical cap liner plate is calculated and determined by the following formula:
wherein: suTo design a given maximum climbing amount, svTo design a given maximum creep amount.
6. The curvilinear beam bridge support arrangement of claim 1, wherein: adopt horizontal self-reset support with through the dead weight consumption because of the horizontal displacement of temperature rising or centrifugal force production, through gravity messenger case roof beam when temperature reduction or load disappear, prevent the stack effect that climbing moved the production many times.
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| CN110863422A (en) * | 2019-11-26 | 2020-03-06 | 上海市基础工程集团有限公司 | Tool type overturn-preventing reinforcing device for precast concrete box girder with anti-collision wall |
| CN113389143B (en) * | 2021-04-02 | 2022-09-02 | 河北雄安荣乌高速公路有限公司 | Anti-creeping, anti-shifting and anti-overturning device for curved beam bridge and construction method |
| CN114182619A (en) * | 2022-01-11 | 2022-03-15 | 中国建筑西南设计研究院有限公司 | Through type curve basket arch bridge supporting constraint system and setting method thereof |
| CN115182241A (en) * | 2022-09-13 | 2022-10-14 | 天津城建设计院有限公司 | Tensile seismic isolation and reduction support capable of moving in transverse direction, longitudinal direction and rotating direction |
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| JP4545920B2 (en) * | 2000-12-11 | 2010-09-15 | オイレス工業株式会社 | Seismic isolation system for bridges |
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| CN106930183B (en) * | 2017-04-28 | 2018-08-21 | 武汉理工大学 | A kind of Curved Beam Bridge antidumping bearing |
| CN207775708U (en) * | 2018-01-24 | 2018-08-28 | 衡水中交信德工程橡塑有限公司 | A kind of big displacement active type vibration absorption and isolation support |
| CN208072187U (en) * | 2018-04-09 | 2018-11-09 | 衡水通途工程制品有限公司 | A kind of curved surface energy-dissipating and shock-absorbing bearing |
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2019
- 2019-02-26 CN CN201910142367.XA patent/CN109680603B/en active Active
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