阅读说明：本技术 一种常导高速磁浮梁端搭板构造 (Normally-conductive high-speed magnetic suspension beam end lapping plate structure ) 是由 饶少臣 曾敏 严爱国 文望青 马明 李元俊 饶诗维 曹文杰 张玲 于 2020-12-29 设计创作，主要内容包括：本发明属于常导高速磁浮桥梁梁缝装置技术领域,具体涉及一种常导高速磁浮梁端搭板构造,包括T型搭板和两个连续梁梁体；所述T型搭板包括T型搭板轨道板梁以及与所述T型搭板轨道板梁底面连接的T型搭板小墩柱；所述T型搭板轨道板梁的两端分别设置于两个连续梁梁体上,所述T型搭板小墩柱设置于两个连续梁梁体之间；所述T型搭板小墩柱横桥向的两侧均固定有卡固弹性钢板,两个连续梁梁体相互靠近的梁端侧面均设有梁端卡槽,所述T型搭板小墩柱两侧的所述卡固弹性钢板分别卡固于两个连续梁梁体的所述梁端卡槽中。本发明能够确保分缝的均等与稳定可靠以及T型搭板稳固性,改善磁浮列车行驶舒适度,提高高速行车的安全稳定性。(The invention belongs to the technical field of beam seam devices of normally-conducting high-speed magnetic suspension bridge girders, and particularly relates to a structure of a normally-conducting high-speed magnetic suspension beam end lapping plate, which comprises a T-shaped lapping plate and two continuous beam bodies; the T-shaped butt strap comprises a T-shaped butt strap track plate beam and a T-shaped butt strap small pier stud connected with the bottom surface of the T-shaped butt strap track plate beam; two ends of the T-shaped butt strap track plate beam are respectively arranged on the two continuous beam bodies, and the T-shaped butt strap small pier column is arranged between the two continuous beam bodies; the T-shaped access panel small pier column transverse bridge is characterized in that clamping elastic steel plates are fixed on two lateral sides of the T-shaped access panel small pier column in the transverse direction, beam end clamping grooves are formed in the beam end side faces, close to each other, of the two continuous beam bodies, and the clamping elastic steel plates on the two sides of the T-shaped access panel small pier column are clamped in the beam end clamping grooves of the two continuous beam bodies respectively. The invention can ensure the equality, stability and reliability of the parting and the stability of the T-shaped butt strap, improve the driving comfort of the magnetic suspension train and improve the safety and stability of high-speed driving.)

1. The utility model provides a high-speed magnetic levitation beam-ends strap structure of normal conductance which characterized in that: comprises a T-shaped butt strap and two continuous beam bodies; the T-shaped butt strap comprises a T-shaped butt strap track plate beam and a T-shaped butt strap small pier stud connected with the bottom surface of the T-shaped butt strap track plate beam; two ends of the T-shaped butt strap track plate beam are respectively arranged on the two continuous beam bodies, and the T-shaped butt strap small pier column is arranged between the two continuous beam bodies; the T-shaped access panel small pier column transverse bridge is characterized in that clamping elastic steel plates are fixed on two lateral sides of the T-shaped access panel small pier column in the transverse direction, beam end clamping grooves are formed in the beam end side faces, close to each other, of the two continuous beam bodies, and the clamping elastic steel plates on the two sides of the T-shaped access panel small pier column are clamped in the beam end clamping grooves of the two continuous beam bodies respectively.

2. The structure of a normally-conductive high-speed magnetic levitation beam end strap of claim 1, wherein: two clamping elastic steel plates are fixed on each lateral side of the T-shaped butt strap small pier stud transverse bridge, and two beam end clamping grooves are correspondingly formed in the beam end side faces, close to each other, of the two continuous beam bodies.

3. The structure of a normally-conductive high-speed magnetic levitation beam end strap of claim 1, wherein: the bottom of the clamping elastic steel plate is fixedly connected with the small pier stud of the T-shaped butt strap, and the top of the clamping elastic steel plate is stretched and clamped in the beam end clamping groove.

4. A normally-conductive high-speed magnetic levitation beam end strap structure as claimed in claim 3, wherein: elastic steel plate anchoring parts are pre-embedded in the small pier columns of the T-shaped butt strap, and the bottoms of the clamped elastic steel plates are fixed with the elastic steel plate anchoring parts.

5. The structure of a normally-conductive high-speed magnetic levitation beam end strap of claim 1, wherein: the top surfaces of the beam ends, close to each other, of the two continuous beam bodies are provided with step portions which are sunken downwards, and the two ends of the T-shaped lap plate track plate beam are arranged on the step portions of the two continuous beam bodies respectively.

6. The structure of claim 5, wherein the end strap of the normally-conducting high-speed magnetic suspension beam is characterized in that: the corner of step portion is equipped with the little support of T type attachment strap, the both ends of T type attachment strap track slab beam set up respectively on the step portion of two continuous roof beam bodies on the little support of T type attachment strap.

7. The structure of a normally-conductive high-speed magnetic levitation beam end strap of claim 1, wherein: functional components are installed on two sides of the T-shaped butt strap track plate girder along the bridge direction.

8. The structure of a normally-conductive high-speed magnetic levitation beam end strap of claim 1, wherein: the beam ends of the two continuous beam bodies, which are close to each other, are respectively installed on the bridge pier through the longitudinal movable support.

Technical Field

The invention belongs to the technical field of beam seam devices of normally-conductive high-speed magnetic suspension bridges, and particularly relates to a structure of a normally-conductive high-speed magnetic suspension beam end lapping plate.

Background

The normal-conducting high-speed maglev has extremely high requirements on the smoothness of a long spindle track, and relevant researches show that the influence of gap change and beam end corners on the maglev bow-shaped frame passing through the pier top is large, the electromagnet vibrates greatly, the reason is mainly that the track irregularity caused by the electromagnet is a bottleneck for restricting the running of a high-speed train, and therefore, the reduction of the beam gap change and the reduction of the protruding irregularity of the beam end corners play an important role in improving the running of the normal-conducting high-speed maglev train.

In order to overcome the problem of beam end corners, the beam joints of two beam bodies are provided with the lintel end lapping plates at present, so that although the problem of partial smoothness generated by the beam end corners is reduced, the own weight is too small, large vibration response is generated under the action of driving power, and the phenomenon of instability of jumping exists, and the phenomenon of defects such as rail buckling looseness and the like of the tracks in the beam end lapping plate area can be caused in the past; the existing butt strap technology cannot ensure the equal, stable and reliable parting, and cannot ensure the high-precision requirement below the millimeter level.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a normally-conductive high-speed magnetic suspension beam end access plate structure which can ensure the equality, stability and reliability of parting seams and the stability of a T-shaped access plate, improve the driving comfort of a magnetic suspension train and improve the safety and stability of high-speed driving.

In order to achieve the purpose, the technical scheme of the invention is a normally-conductive high-speed magnetic suspension beam end butt strap structure, which comprises a T-shaped butt strap and two continuous beam bodies; the T-shaped butt strap comprises a T-shaped butt strap track plate beam and a T-shaped butt strap small pier stud connected with the bottom surface of the T-shaped butt strap track plate beam; two ends of the T-shaped butt strap track plate beam are respectively arranged on the two continuous beam bodies, and the T-shaped butt strap small pier column is arranged between the two continuous beam bodies; the T-shaped access panel small pier column transverse bridge is characterized in that clamping elastic steel plates are fixed on two lateral sides of the T-shaped access panel small pier column in the transverse direction, beam end clamping grooves are formed in the beam end side faces, close to each other, of the two continuous beam bodies, and the clamping elastic steel plates on the two sides of the T-shaped access panel small pier column are clamped in the beam end clamping grooves of the two continuous beam bodies respectively.

Furthermore, two clamping elastic steel plates are fixed on each side of the T-shaped butt strap small pier stud transverse bridge, and two beam end clamping grooves are correspondingly formed in the beam end side faces, close to each other, of the two continuous beam bodies.

Furthermore, the bottom of the clamping elastic steel plate is fixedly connected with the small pier stud of the T-shaped butt strap, and the top of the clamping elastic steel plate is stretched and clamped in the beam end clamping groove.

Furthermore, an elastic steel plate anchoring part is pre-embedded in the small pier stud of the T-shaped butt strap, and the bottom of the clamped elastic steel plate is fixed with the elastic steel plate anchoring part.

Furthermore, the top surfaces of the beam ends, close to each other, of the two continuous beam bodies are provided with step portions which are sunken downwards, and the two ends of the T-shaped butt strap track plate beam are respectively arranged on the step portions of the two continuous beam bodies.

Furthermore, a T-shaped butt strap small support is arranged at the corner of the step part, and two ends of the T-shaped butt strap track plate beam are respectively arranged on the T-shaped butt strap small supports on the step parts of the two continuous beam bodies.

Furthermore, functional components are installed on two sides of the T-shaped butt strap track plate beam along the bridge direction.

Furthermore, the beam ends of the two continuous beam bodies, which are close to each other, are respectively installed on the bridge pier through the longitudinal movable support.

Compared with the prior art, the invention has the following beneficial effects:

the T-shaped access board small pier column of the T-shaped access board extends between the two continuous beam bodies, the T-shaped access board small pier column of the T-shaped access board extends to a certain depth between the two continuous beam bodies, and the clamping elastic steel plates on two sides of the T-shaped access board small pier column of the T-shaped access board are clamped in the beam end clamping grooves on the side faces of the beam ends of the two continuous beam bodies respectively, so that on one hand, longitudinal horizontal force can be generated to keep the T-shaped access board track plate beam in the middle, the beam seam is divided into two parts, the equality, stability and reliability of the seam are ensured, on the other hand, the upward jumping of the T-shaped access board is limited through the clamping effect of the beam end clamping grooves on the clamping elastic steel plates, the T-shaped access board is ensured not to jump due to small weight, and the T-shaped access board is stable enough, so that the safety and stability of a high-speed driving are.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of a normal-conducting high-speed magnetic levitation beam end strap structure applied to a two-span one-coupling continuous beam according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an end strap structure of a normally-conductive high-speed magnetic levitation beam according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a T-strap provided in accordance with an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a T-strap track plate beam on a beam end of a continuous beam body provided by an embodiment of the present invention;

in the figure: 1. a continuous beam body; 2. t-shaped butt straps; 21. t-shaped butt strap track plate girder; 22. t-shaped butt strap small pier stud; 3. a longitudinal movable support; 4. a T-shaped butt strap small support; 5. clamping and fixing the elastic steel plate; 6. an elastic steel plate anchoring member; 7. a beam end clamping groove; 8. and (4) longitudinally fixing the support.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, 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. 1-4, the present embodiment provides a normal-conducting high-speed magnetic levitation beam end strap structure, which includes a T-shaped strap 2 and two continuous beam bodies 1; the T-shaped butt strap 2 comprises a T-shaped butt strap track plate beam 21 and a T-shaped butt strap small pier column 22 connected with the bottom surface of the T-shaped butt strap track plate beam 21; two ends of the T-shaped butt strap track plate beam 21 are respectively arranged on the two continuous beam bodies 1, and the T-shaped butt strap small pier column 22 is arranged between the two continuous beam bodies 1; the two sides of the T-shaped access panel small pier stud 22 in the transverse direction are symmetrically fixed with clamping elastic steel plates 5, the beam end side faces, close to each other, of the two continuous beam bodies 1 and the positions, corresponding to the clamping elastic steel plates 5, of the beam end side faces are provided with beam end clamping grooves 7 used for containing the clamping elastic steel plates 5, and the clamping elastic steel plates 5 on the two sides of the T-shaped access panel small pier stud 22 are clamped in the beam end clamping grooves 7 of the two continuous beam bodies 1 respectively. In the embodiment, the T-shaped access plate track slab beam 21 of the T-shaped access plate 2 converts the beam-to-beam relation of the corner at the end of the pier top beam into the beam-to-platform relation, the short wave irregularity is halved (namely the track fluctuation within the range of 3 meters in length), and meanwhile, the beam seam expansion and contraction quantity is divided into two parts, so that the seam width is halved; then, the T-shaped access board small pier stud 22 of the T-shaped access board 2 extends to a certain depth between the two continuous beam bodies 1, and the clamping elastic steel plates 5 on two sides of the T-shaped access board small pier stud 22 of the T-shaped access board 2 are clamped in the beam end clamping grooves 7 on the side faces of the beam ends of the two continuous beam bodies 1 respectively, so that on one hand, longitudinal horizontal force can be generated to keep the T-shaped access board track plate beam 21 in the middle, the beam gap is divided into two parts, the equal, stable and reliable split gap is ensured, on the other hand, the upward jumping of the T-shaped access board 2 is limited through the clamping effect of the beam end clamping grooves 7 on the clamping elastic steel plates 5, the T-shaped access board 2 is ensured not to jump due to small weight, the T-shaped access board 2 is stable enough, and the problem of diseases in the beam end access board area is avoided.

Furthermore, two clamping elastic steel plates 5 are fixed on each side of the T-shaped butt strap small pier stud 22 in the transverse direction, and two beam end clamping grooves 7 are correspondingly arranged on the beam end side faces, close to each other, of the two continuous beam bodies 1. As shown in fig. 3 and 4, in this embodiment, two clamped elastic steel plates 5 may be symmetrically fixed on two lateral sides of the T-shaped access panel small pier stud 22 in the transverse direction, and two beam end slots 7 on the beam end side of each continuous beam body 1 correspond to two clamped elastic steel plates 5 on the side of the T-shaped access panel small pier stud 22 opposite to the beam end side one by one, so as to ensure the equality, stability and reliability of the parting. The inner wall of the beam end clamping groove 7 of the embodiment can embed a steel plate in advance, so that the clamping elastic steel plate 5 directly acts on the embedded steel plate, and the phenomenon that the clamping elastic steel plate 5 and beam concrete act to influence the seam equality, stability and reliability is avoided.

Further, the bottom of the clamping elastic steel plate 5 is fixedly connected with the small pier stud 22 of the T-shaped butt strap, and the top of the clamping elastic steel plate 5 is opened and clamped in the beam end clamping groove 7. As shown in fig. 2, in this embodiment, the T-shaped abutment 22 is transversely bridged to the top of the clamped elastic steel plate 5 at both sides and has a certain distance from the side of the T-shaped abutment 22, the expanded clamped elastic steel plate 5 is squeezed into the corresponding beam end clamping groove 7 to generate horizontal internal force, the beam gap changes equally by the horizontal elastic force of the T-shaped abutment 22 transversely bridged to both sides, and the vertical movement of the T-shaped abutment 2 is limited by the clamping action of the beam end clamping groove 7 on the clamped elastic steel plate 5, so as to ensure that the T-shaped abutment 2 moves along with the beam body without jumping out.

Furthermore, an elastic steel plate anchoring part 6 is embedded in the small pier stud 22 of the T-shaped butt strap, and the bottom of the clamped elastic steel plate 5 is fixed with the elastic steel plate anchoring part 6. As shown in fig. 2, in the present embodiment, a plurality of elastic steel plate anchors 6 are pre-embedded at positions for each of the clamped elastic steel plates 5 in the T-shaped access panel small pier stud 22, and the clamped elastic steel plates 5 at symmetrical positions on two lateral sides of the T-shaped access panel small pier stud 22 are fixed by the plurality of common elastic steel plate anchors 6.

Further, the top surfaces of the beam ends, close to each other, of the two continuous beam bodies 1 are provided with step portions which are recessed downwards, and the two ends of the T-shaped lap plate track plate beam 21 are respectively arranged on the step portions of the two continuous beam bodies 1. As shown in fig. 2, in the present embodiment, downward recessed steps are symmetrically provided on the top surfaces of the beam ends of two continuous beam bodies 1 close to each other so as to rest the T-lap track plate beam 21, and the top surface of the T-lap track plate beam 21 may be flush with the top surfaces of the continuous beam bodies 1 on the left and right sides thereof.

Furthermore, a small T-shaped strap support 4 is arranged at a corner of the step portion, and two ends of the rail plate beam 21 of the T-shaped strap are respectively arranged on the small T-shaped strap supports 4 on the step portions of the two continuous beam bodies 1. As shown in fig. 2 and 4, in the present embodiment, the T-shaped strap small supports 4 are disposed at the step part corners of the two continuous beam bodies 1, and the T-shaped strap small supports 4 are disposed at the two ends of the step part corners of each continuous beam body 1 in the transverse direction.

Further, functional components are mounted on two sides of the T-shaped butt strap track plate beam 21 along the bridge direction. As shown in fig. 3 and 4, the present embodiment transfers the functional modules on the continuous beam body 1 in the area of the T-strap track plate beam 21 onto the T-strap track plate beam 21, the T-strap track plate beam 21 having a standard length of 3.096 meters for one functional module.

Further, the beam ends of the two continuous beam bodies 1 which are close to each other are respectively installed on the bridge piers through the longitudinal movable supports 3. The application of the normal-conducting high-speed magnetic suspension beam end strap structure in the two-span one-connection continuous beam is that, as shown in fig. 1, a T-shaped strap 2 is arranged at the top of a movable beam end pier of two continuous beam bodies 1, the movable beam ends of the two continuous beam bodies 1 close to each other are respectively installed on the same bridge pier through a longitudinal movable support 3, and the middle parts of the two continuous beam bodies 1 are respectively installed on the corresponding bridge piers through longitudinal fixed supports 8.

The embodiment can flatten the protruding sharp points generated by corner deformation between the beams, thereby reducing the unevenness of the bridge deck (namely the rail surface), being beneficial to the stability of high-speed driving, and simultaneously, the beam seam between two beam ends can be equally divided into two parts, so that the seam width is halved, thus the power response of the electromagnet when the magnetic suspension spindle passes through the beam seam is effectively reduced, being beneficial to safe driving, being beneficial to the use durability of relevant devices such as functional components, coil spindles and the like, and being capable of being used for a normally-conducting high-speed magnetic suspension railway with the speed of 600 km/h.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.