CN214301236U

CN214301236U - Bridge beam supports with tensile, antitorque function

Info

Publication number: CN214301236U
Application number: CN202022234254.3U
Authority: CN
Inventors: 曾敏; 李靖; 文望青; 严爱国
Original assignee: China Railway Siyuan Survey and Design Group Co Ltd
Current assignee: China Railway Siyuan Survey and Design Group Co Ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-09-28
Anticipated expiration: 2030-10-10

Abstract

The utility model provides a bridge bearing with tensile and anti-torsion functions, which comprises a bearing top plate, a bearing bottom plate, a spherical steel bearing main body and an anti-tension-torsion structural component, wherein the spherical steel bearing main body and the anti-tension-torsion structural component are arranged between the bearing top plate and the bearing bottom plate; the tensile torsion structure assembly is arranged on two sides of the spherical steel support main body along the transverse bridge direction, the top of the tensile torsion structure assembly is connected with the support top plate through a tensile anchor bolt pre-embedded on the support top plate, and the bottom of the tensile torsion structure assembly is connected with the support bottom plate through a tensile lower bolt. The bridge support has the advantages that the tensile force and torque load of a bridge can be resisted by adding the tension-torsion resisting structural component on the basis of the conventional bridge support which can only bear pressure, the longitudinal bending moment and the horizontal load which needs to be released are effectively released, the hinge property of the support is kept unchanged, the bridge support combines the respective advantages of a common support and a tensile support, the weight is small, the materials are saved, the structure is simple, the manufacturing cost is low, the vibration reduction capability is strong, and the strong practicability is realized.

Description

Bridge beam supports with tensile, antitorque function

Technical Field

The utility model belongs to the technical field of bridge structures, concretely relates to bridge beam supports with tensile, antitorque function.

Background

At present, bridge supports often exist in domestic pedestrian overpasses and rail transit bridges, particularly in light rail transit, such as straddle-type monorail trains, rubber-tyred tramcars and the like, the constant activity ratio is very small, and the stress state of the supports is constantly changed between compression and tension or even torsion resistance.

The conventional bridge support is generally only a pressed support, so that the weight is small, the weight is light, the manufacturing cost is low, the function is complete, and the vibration damping effect is good due to the adoption of the spherical friction pair. When the bridge support needs to resist tensile force or torque, the stress mode of the whole support needs to be changed, and the existing bridge tensile and anti-torque support has complex functions, large size, high manufacturing cost, poor vibration damping effect and time and labor waste in replacement.

Therefore, it is necessary to design a bridge support, which not only has the advantages of small size, light weight, low cost, etc. of a common bridge support, but also can bear tension and torque loads.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bridge beam supports with tensile, antitorque function, the volume that had both had ordinary bridge beam supports is little, light in weight, and advantages such as cost is low can bear pulling force and moment of torsion load again.

In order to achieve the above purpose, the utility model provides a following technical scheme: a bridge bearing with tensile and anti-torsion functions comprises a bearing top plate, a bearing bottom plate, a spherical steel bearing main body and a tensile and torsion resistant structural assembly, wherein the spherical steel bearing main body and the tensile and torsion resistant structural assembly are arranged between the bearing top plate and the bearing bottom plate; the tensile torsion structure assembly is arranged on two sides of the spherical steel support main body along the transverse bridge direction, the top of the tensile torsion structure assembly is connected with the support top plate through a tensile anchor bolt pre-embedded on the support top plate, and the bottom of the tensile torsion structure assembly is connected with the support bottom plate through a tensile lower bolt.

Further, the tensile kink structure subassembly includes along the first otic placode and two second otic placodes of longitudinal bridge to arranging, two the second otic placode is relative arrangement, all be equipped with the bolt hole on first otic placode and the two second otic placodes, first otic placode overlap forms symmetrical structure between two second otic placodes, and the bolt hole of first otic placode and second otic placode is corresponding, first otic placode and second otic placode are through the bolted connection of running through its bolt hole.

Furthermore, the first lug plate is connected with the support top plate through a tensile anchor bolt, and the second lug plate is connected with the support bottom plate through a tensile lower bolt; or the first lug plate is connected with the support bottom plate through a tensile lower bolt, and the second lug plate is connected with the support top plate through a tensile anchor bolt.

Further, the height of the axis of the bolt is consistent with the rotation center of the spherical friction pair of the spherical steel support main body.

Further, the bolt abuts against the upper portions of the bolt holes of the first lug plate and the second lug plate.

Furthermore, a fine adjustment gasket is arranged between the bottom of the tensile kink structure assembly and the bottom plate of the support, or between the top of the tensile kink structure assembly and the top plate of the support.

Further, the first lug plate is thicker than the second lug plate.

Furthermore, the bolt holes of the first lug plate and the second lug plate are oval, the long axes of the oval shapes of the first lug plate and the second lug plate are arranged along the longitudinal bridge direction, and a longitudinal gap exists between the two ends of the long axes of the oval shapes and the bolt.

Further, a transverse gap exists between the first lug plate and the second lug plate, and the transverse gap is controlled and adjusted through the distance between the two second lug plates.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a this kind of bridge beam supports with tensile, antitorque function is through increasing tensile torsion structure subassembly on the conventional bridge beam supports basis that only can bear pressure, can resist bridge pulling force and moment of torsion load, and the horizontal load of effectual release longitudinal bending moment and needs release, it is unchangeable to keep support hinge property, this bridge beam supports has combined ordinary support and tensile support advantage separately, the volume is little, materials are economized, simple structure, low in cost, vibration damping capacity is strong, have very strong feasibility of implementation, applicable in high-intensity seismic region, pedestrian overpass, stride a formula single track, the cloud bar, all kinds of bridge structures such as novel track traffic such as suspension type single track.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic longitudinal structure diagram of a bridge support with tension and torsion resistant functions according to the present invention;

FIG. 2 is a schematic view of a transverse bridge structure of the bridge support with tension and torsion resistant functions of the present invention;

FIG. 3 is an enlarged view of the connection between the first ear plate and the second ear plate when the anti-pulling and twisting structure assembly of the present invention is longitudinally limited;

fig. 4 is an enlarged view of the connection between the first ear plate and the second ear plate when the anti-pulling and twisting structural component of the present invention can move longitudinally;

fig. 5 is a schematic view of the connection between the first ear plate and the second ear plate of the middle pull-twist structure assembly of the present invention.

Description of reference numerals: 1. a support base plate; 2. a support top plate; 3. a spherical steel support main body; 4. a tensile anchor bolt; 5. a tension-torsion resistant structural component; 6. a tensile lower bolt; 7. trimming the gasket; 8. a first ear plate; 9. a bolt; 10. a second ear panel; 11. bolt holes; 12. a longitudinal gap; 13. a lateral gap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1 and 2, the present embodiment provides a bridge bearing with tensile and torsion resistant functions, which comprises a bearing top plate 2, a bearing bottom plate 1, and a spherical steel bearing body 3 and a tensile kink member assembly 5 arranged between the bearing top plate 2 and the bearing bottom plate 1; tensile twist resistant structure subassembly 5 sets up in spherical steel support main part 3 along the both sides of horizontal bridge to, and tensile twist knot constructs 5 tops and is connected with support roof 2 through pre-buried tensile crab-bolt 4 on support roof 2, and tensile twist knot constructs 5 bottoms of subassembly and is connected with support bottom plate 1 through tensile lower bolt 6. Generally, the spherical steel support body 3 can only bear pressure in a common bridge support, and the specific structure thereof is the prior art and is not described herein again; in the embodiment, the tensile twist structure component 5 is added on the basis of a common bridge support, the tensile twist structure component 5 is bolted with the support top plate 2 and the support bottom plate 1, and the longitudinal bending moment can be effectively released through the tensile twist structure component 5, so that the hinge property of the support is kept unchanged; meanwhile, according to the characteristic that the bridge support mainly bears pressure load, different stress modes can be switched in a time-sharing mode when the bridge support bears the pressure load and the tension load, namely when the bridge support mainly bears the pressure, the tension-torsion resistant structure component 5 does not transmit the load, the pressure is borne by the spherical steel support main body 3, and when the bridge support mainly bears the tension, the tension-torsion resistant structure component 5 is in a tension state and transmits the tension to a pier, so that the aim of resisting the tension and the torque load of the bridge is fulfilled. The bridge bearing of the embodiment combines the respective advantages of the common bearing and the tensile bearing, and has the advantages of small volume, material saving, simple structure, low manufacturing cost, strong vibration damping capacity and strong practicability.

In a specific embodiment, as shown in fig. 3, 4 and 5, the tensile-torsional structural assembly 5 includes a first ear plate 8 and two second ear plates 10 arranged along a longitudinal bridge direction, the two second ear plates 10 are arranged oppositely, bolt holes 11 are formed in both the first ear plate 8 and the two second ear plates 10, the first ear plate 8 is overlapped between the two second ear plates 10 to form a symmetrical structure, and the bolt 9 is prevented from being in an eccentric stressed state after being connected with the ear plates; for the connection of the first ear plate 8 and the second ear plate 10, the bolt holes 11 of the first ear plate 8 and the second ear plate 10 are correspondingly arranged, the bolt holes 11 of the three ear plates are coaxially arranged, and the first ear plate 8 and the second ear plate 10 are connected through the bolts 9 penetrating through the bolt holes 11. In order to ensure the stress of the lug plate structure, it is optimized that the first lug plate 8 is composed of a thicker lug plate, and the second lug plate 10 is composed of a relatively thinner lug plate, so that the first lug plate 8 and the second lug plate 10 are overlapped in thickness to form a symmetrical structure, and further the bolt 9 and the lug plates are prevented from being in an eccentric stress state.

The connection between the tension-torsion resistant structure assembly 5 and the support top plate 2 and the support bottom plate 1 is refined, the first lug plate 8 is connected with the support top plate 2 through a tension-resistant anchor bolt 4, and the second lug plate 10 is connected with the support bottom plate 1 through a tension-resistant lower bolt 6; of course, the mounting positions of the first lug plate 8 and the second lug plate 10 can be changed, i.e. the first lug plate 8 can also be connected to the carrier base plate 1 by means of the tension anchor 6, and the second lug plate 10 can also be connected to the carrier top plate 2 by means of the tension anchor 4.

Optimally, when the tension-torsion resistant structural component 5 is installed, the axial height of the bolt 9 is consistent with the rotation center of the spherical friction pair of the spherical steel support main body 3, and the longitudinal rotation function of the bridge support is prevented from being limited. When the axial height of the bolt 9 is inconsistent with the rotation center of the spherical friction pair of the spherical steel support body 3, the position of the bolt hole 11 can be changed by adjusting the sizes of the first lug plate 8 and the second lug plate 10, so that the central height of the bolt 9 can be adjusted, and the hinging function is realized.

In order to ensure that the tensile force can be immediately transmitted to the support base plate 1 when the bridge support bears the tensile force without influencing the spherical friction by-product of the spherical steel support main body 3, as shown in fig. 3, when the bridge support is in an initial state, the upper gap between the bolt 9 and the bolt hole 11 is eliminated, the bolt 9 is abutted to the upper edges of the bolt holes 11 of the first lug plate 8 and the second lug plate 10, and if the bolt 9 does not tightly abut against the upper edges of the bolt holes 11, once the bridge support bears the tensile force, the spherical friction pair of the spherical steel support main body 3 is separated, so that the durability of the bridge support is influenced.

Specifically, an embodiment of adjusting the upper and lower gaps between the bolt 9 and the bolt hole 11 on the lug plate may be that a fine adjustment gasket 7 is arranged between the bottom of the tension-resistant structure assembly 5 and the support base plate 1, when the bolt 9 and the upper portion of the bolt hole 11 are not tightly jacked, the fine adjustment gasket 7 is partially removed, and the tensile lower bolt 6 is tightened, so that the bolt 9 in the bolt hole 11 and the upper portion of the bolt hole 11 are tightly jacked, when tensile force occurs, the tensile force can be immediately transmitted to the support base plate 1, and the spherical friction pair that the tensile force is transmitted to the spherical steel support main body 3 is avoided. Of course, the fine tuning shims 7 may also be provided between the top of the tension resistant structural assembly 5 and the carrier top plate 2. Wherein, the thickness of the fine tuning pad 7 can be customized according to actual needs.

Further, in order to ensure that the bridge bearing can adapt to the longitudinal deformation capacity, as shown in fig. 4, the bolt holes 11 of the first lug plate 8 and the second lug plate 10 can be designed to be oval, the major axes of the oval shapes are arranged along the longitudinal bridge direction, a longitudinal gap 12 exists between the two ends of the major axis of the oval shape and the bolt 9, and the longitudinal displacement of the bearing is adapted through the longitudinal gap 12.

In order to ensure that the bridge bearing can adapt to the transverse deformation capacity, as shown in fig. 5, a transverse gap 13 can be designed between the first lug plate 8 and the second lug plate 10, the transverse gap 13 is controlled and adjusted through the distance between the two second lug plates 10, and the transverse displacement of the bearing can be adapted by changing the size of the transverse gap 13.

To sum up, the utility model provides a this kind of bridge beam supports with tensile, antitorque function is through increasing tensile and turning round the structure subassembly on the conventional bridge beam supports basis that only can bear pressure, can resist bridge pulling force and moment of torsion load, and the horizontal load of effectual release longitudinal bending moment and needs release, it is unchangeable to keep the articulated performance of support, this bridge beam supports has combined ordinary support and tensile support advantage separately, the volume is little, materials are economized, simple structure, low in cost, damping capacity is strong, have very strong feasibility of implementation, applicable in high-intensity seismic region, the pedestrian bridge, stride a formula single track, the cloud bar, all kinds of bridge structures such as novel track traffic such as suspension type.

The above examples are merely illustrative of the present invention and do not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.

Claims

1. A bridge bearing with tensile and anti-torsion functions is characterized in that: the support comprises a support top plate, a support bottom plate, a spherical steel support main body and a tension-torsion resistant structure assembly, wherein the spherical steel support main body and the tension-torsion resistant structure assembly are arranged between the support top plate and the support bottom plate; the tensile torsion structure assembly is arranged on two sides of the spherical steel support main body along the transverse bridge direction, the top of the tensile torsion structure assembly is connected with the support top plate through a tensile anchor bolt pre-embedded on the support top plate, and the bottom of the tensile torsion structure assembly is connected with the support bottom plate through a tensile lower bolt.

2. A bridge bearer with tension and torsion resisting functions as claimed in claim 1, wherein: the tensile kink structure subassembly includes along first otic placode and two second otic placodes of longitudinal bridge to arranging, two second otic placode opposite arrangement, all be equipped with the bolt hole on first otic placode and two second otic placodes, first otic placode overlap and form symmetrical structure between two second otic placodes, and the bolt hole of first otic placode and second otic placode is corresponding, first otic placode and second otic placode are through the bolted connection who runs through its bolt hole.

3. A bridge bearer with tension and torsion resisting functions as claimed in claim 2, wherein: the first lug plate is connected with the support top plate through a tensile anchor bolt, and the second lug plate is connected with the support bottom plate through a tensile lower bolt; or the first lug plate is connected with the support bottom plate through a tensile lower bolt, and the second lug plate is connected with the support top plate through a tensile anchor bolt.

4. A bridge bearer with tension and torsion resisting functions as claimed in claim 2, wherein: the axial line height of the bolt is consistent with the rotation center of the spherical friction pair of the spherical steel support main body.

5. A bridge bearer with tension and torsion resisting functions as claimed in claim 2, wherein: and the bolt is abutted against the upper parts of the bolt holes of the first lug plate and the second lug plate.

6. A bridge bearer with tension and torsion resisting functions as claimed in claim 2, wherein: and a fine adjustment gasket is arranged between the bottom of the tensile kinking component and the bottom plate of the support, or between the top of the tensile kinking component and the top plate of the support.

7. A bridge bearer with tension and torsion resisting functions as claimed in claim 2, wherein: the first lug plate has a thickness greater than a thickness of the second lug plate.

8. A bridge bearer with tension and torsion resisting functions as claimed in claim 2, wherein: the bolt holes of the first lug plate and the second lug plate are oval, the oval long shafts of the first lug plate and the second lug plate are arranged along the longitudinal bridge direction, and longitudinal gaps exist between the two ends of the oval long shafts and the bolts.

9. A bridge bearer with tension and torsion resisting functions as claimed in claim 2, wherein: a transverse gap exists between the first lug plate and the second lug plate, and the transverse gap is controlled and adjusted through the distance between the two second lug plates.