CN112726388A - High-speed magnetic levitation beam end lapping plate structure of normal conduction - Google Patents
High-speed magnetic levitation beam end lapping plate structure of normal conduction Download PDFInfo
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- CN112726388A CN112726388A CN202011595727.0A CN202011595727A CN112726388A CN 112726388 A CN112726388 A CN 112726388A CN 202011595727 A CN202011595727 A CN 202011595727A CN 112726388 A CN112726388 A CN 112726388A
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- strap
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- speed magnetic
- shaped butt
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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 belongs to the technical field of beam seam devices of normally-conducting high-speed magnetic suspension bridge, and particularly relates to a structure of a normally-conducting high-speed magnetic suspension beam end butt strap, which comprises a bridge pier, 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; the both ends of T type attachment strap track slab beam set up respectively on two continuous beam roof beam bodies, the top of pier pre-buried have with the little pier stud assorted of T type attachment strap holds solid sleeve, the little pier stud of T type attachment strap passes the roof beam seam between two continuous beam roof beam bodies and extends hold in the solid sleeve, just the bottom of the little pier stud of T type attachment strap with the top of pier is connected. The invention reduces the vibration of the electromagnet, improves the driving comfort of the maglev train and improves the safety and stability of high-speed driving by improving the influence of corner deformation of the beam end and reducing beam gaps.
Description
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 normally-conductive high-speed magnetic suspension beam end lapping plate structure.
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 in 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 a parting seam 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 bridge pier, 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; the both ends of T type attachment strap track slab beam set up respectively on two continuous beam roof beam bodies, the top of pier pre-buried have with the little pier stud assorted of T type attachment strap holds solid sleeve, the little pier stud of T type attachment strap passes the roof beam seam between two continuous beam roof beam bodies and extends hold in the solid sleeve, just the bottom of the little pier stud of T type attachment strap with the top of pier is connected.
Furthermore, an anchoring screw is embedded in the bottom of the small pier stud of the T-shaped butt strap; the top of pier has well kenozooecium, it is located to hold solid the sleeve the top of well kenozooecium, just hold and have a first through-hole in the bottom surface of solid the sleeve in advance, hold solid the sleeve with reserve the second through-hole on the pier part between well kenozooecium, the bottom of anchor screw passes in proper order first through-hole with extend behind the second through-hole in the well kenozooecium and fixed through the nut.
Furthermore, a cavity with an opening facing the hollow part is arranged on the bridge pier part of the top surface of the hollow part, and the cavity is communicated with the second through hole; install spiral pre-compaction spring in the cavity, the bottom of anchor screw rod passes in proper order first through-hole, the second through-hole reaches behind the well cavity of spiral pre-compaction spring extend in the well kenozooecium and pass through the nut is fixed.
Furthermore, a cushion block is arranged between the spiral pre-pressing spring and the screw cap, and the cushion block is sleeved on the anchoring screw rod.
Furthermore, the anchoring screw rods are provided with a plurality of threads, and the first through holes, the second through holes, the cavity, the spiral pre-pressing springs and the screw caps are in one-to-one correspondence with the anchoring screw rods.
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 a longitudinal movable support.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the T-shaped access board small pier column of the T-shaped access board penetrates through the beam joint between two continuous beam bodies and extends to a certain depth in the holding sleeve pre-embedded on the top surface of the bridge pier, so that the T-shaped access board can only move vertically, the vertical malposition of the T-shaped access board and the beam end joint is kept without occurring due to the corner, meanwhile, the bottom of the T-shaped access board small pier column is connected with the top of the bridge pier, the T-shaped access board small pier column is anchored on the bridge pier, the T-shaped access board is ensured not to jump due to small weight, and the T-shaped access board is stable enough, thereby being beneficial to the safety and stability of high-speed driving;
(2) according to the invention, the spiral pre-pressing spring is arranged on the anchoring screw rod, the cavity is arranged on the pier part on the top surface of the hollow part and used for accommodating the spiral pre-pressing spring to stretch and retract up and down in the cavity, the T-shaped butt strap is ensured to be subjected to constant downward pulling force through the spiral pre-pressing spring so as to resist the jumping tendency possibly generated by the vibration of the T-shaped butt strap, and the pre-tightening force on the T-shaped butt strap is adjusted by adjusting the height of the cushion block.
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 cross-sectional view of a continuous beam body in a non-T-lap area provided by an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a continuous beam body in the area of a T-strap provided by an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a T-strap track plate beam at a beam end provided by an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a T-strap track plate beam at a beam seam provided by an embodiment of the present invention;
fig. 6 is a schematic view of a structure of a normally-conductive high-speed magnetic levitation beam end strap according to an embodiment of the present invention;
in the figure: 1. a continuous beam body; 2. a bridge pier; 3. t-shaped butt straps; 31. t-shaped butt strap track plate girder; 32. t-shaped butt strap small pier stud; 4. a T-shaped butt strap small support; 5. a longitudinal movable support; 6. fixing the sleeve; 7. an anchoring screw; 8. a nut; 9. a cavity; 10. a helical pre-compression spring; 11. cushion blocks; 12. 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. 1-6, the present embodiment provides a normal-conducting high-speed magnetic suspension beam end strap structure, which includes a bridge pier 2, a T-shaped strap 3, and two continuous beam bodies 1; the T-shaped butt strap 3 comprises a T-shaped butt strap track plate beam 31 and a T-shaped butt strap small pier column 32 connected with the bottom surface of the T-shaped butt strap track plate beam 31; the both ends of T type attachment strap track slab beam 31 set up respectively on two continuous beam roof beam bodies 1, the top of pier 2 pre-buried have with T type attachment strap pier stud 32 assorted holds solid sleeve 6, T type attachment strap pier stud 32 passes the roof beam seam between two continuous beam roof beam bodies 1 and extends hold in the solid sleeve 6, just the bottom of T type attachment strap pier stud 32 with the top of pier 2 is connected. In the embodiment, the T-shaped access plate track slab beam 31 of the T-shaped access plate 3 converts the pier top beam end corner into the bridge abutment beam end corner, so that the short wave irregularity is halved, and meanwhile, the beam seam expansion and contraction amount is divided into two parts, so that the seam width is halved; then, the T-shaped butt strap small pier column 32 of the T-shaped butt strap 3 penetrates through a beam joint between two continuous beam bodies 1 and extends into the holding sleeve 6 pre-embedded on the top surface of the pier 2 for a certain depth, so that the T-shaped butt strap 3 can only vertically move, vertical malposition of the T-shaped butt strap 3 and the beam end joint is kept without corner rotation, the joint is ensured to be equal, stable and reliable, meanwhile, the bottom of the T-shaped butt strap small pier column 32 is connected with the top of the pier 2, the T-shaped butt strap small pier column 32 is anchored on the pier 2, the T-shaped butt strap 3 is ensured not to jump due to small weight, the T-shaped butt strap 3 is stable enough, and the problem of diseases in a beam end butt strap area is avoided.
Further, an anchoring screw 7 is embedded in the bottom of the small T-shaped butt plate pier column 32; the top of pier 2 has well kenozooecium, it is located to hold solid sleeve 6 the top of well kenozooecium, just it has first through-hole to hold to reserve on the bottom surface of solid sleeve 6, hold solid sleeve 6 with reserve the second through-hole on the pier 2 part between well kenozooecium, the bottom of anchor screw 7 passes in proper order first through-hole with extend behind the second through-hole in the well kenozooecium and fixed through nut 8. As shown in fig. 5 and 6, the top of the pier 2 of the present embodiment has a hollow portion along the transverse direction, the anchoring screw 7 is embedded in the bottom of the small pier stud 32 of the T-shaped attachment strap, and the bottom end of the anchoring screw 7 has an external thread matching with the nut 8, and the bottom end of the anchoring screw 7 passes through the first through hole on the bottom surface of the holding sleeve 6 and the second through hole on the pier 2 portion between the holding sleeve 6 and the hollow portion and then extends into the hollow portion to be fastened by the nut 8 , so as to fix the T-shaped attachment strap 3 on the pier top of the pier 2.
Furthermore, a cavity 9 with an opening facing the hollow part is arranged on the pier 2 part of the top surface of the hollow part, and the cavity 9 is communicated with the second through hole; a spiral pre-pressing spring 10 is installed in the cavity 9, and the bottom end of the anchoring screw rod 7 sequentially penetrates through the first through hole, the second through hole and the hollow cavity of the spiral pre-pressing spring 10 and then extends into the hollow cavity and is fixed through the screw cap 8. As shown in fig. 6, in the present embodiment, a cavity 9 is formed in a portion of the pier 2 on the top surface of the hollow portion, and is used for accommodating the helical preloading spring 10 to move up and down, and one end of the helical preloading spring 10 abuts against the top surface of the cavity 9, and the other end abuts against the nut 8, so that the T-shaped strap 3 is ensured to be subjected to a constant downward pulling force by the helical preloading spring 10, and a possible jumping tendency caused by vibration of the T-shaped strap 3 is resisted.
Furthermore, a cushion block 11 is arranged between the helical preloading spring 10 and the nut 8, and the cushion block 11 is sleeved on the anchoring screw 7. As shown in fig. 6, in this embodiment, a spacer 11 is installed on the anchor screw 7 between the helical preload spring 10 and the nut 8, and the preload applied to the T-strap 3 is adjusted by adjusting the height of the spacer 11.
Furthermore, the anchor screw 7 has a plurality of, and the first through hole, the second through hole, the cavity 9, the helical preloading spring 10 and the nut 8 all correspond to the anchor screw 7 one to one. The number of the anchor screws 7 in this embodiment can be determined according to actual conditions, and the number and the positions of the first through hole on the bottom surface of the holding sleeve 6, the second through hole on the pier 2 part between the holding sleeve 6 and the hollow part, the cavity 9, the helical pre-pressing spring 10, the nut 8 and the cushion block 11 are all in one-to-one correspondence with the anchor screws 7.
Further, the top surfaces of the beam ends of the two continuous beam bodies 1 close to each other are provided with step portions recessed downward, and the two ends of the T-shaped lap plate track plate beam 31 are respectively arranged on the step portions of the two continuous beam bodies 1. As shown in fig. 3, 4 and 6, in the present embodiment, the top surfaces of the beam ends of the two continuous beam bodies 1 close to each other are symmetrically provided with downward-recessed steps so as to rest the T-strap track plate beam 31, and the top surface of the T-strap track plate beam 31 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 31 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. 4 and fig. 6, 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 31 along the bridge direction. As shown in fig. 2 to 4, the present embodiment transfers the functional modules on the continuous beam body 1 in the area of the T-strap track plate beam 31 onto the T-strap track plate beam 31, and the T-strap track plate beam 31 is 3.096 meters long as one functional module standard length.
Further, the beam ends of the two continuous beam bodies 1, which are close to each other, are respectively installed on the piers 2 through the longitudinal movable supports 5. The application of the normal-conducting high-speed magnetic suspension beam end strap structure of the embodiment in the two-span one-connection continuous beam is that, as shown in fig. 1, a T-shaped strap 3 is arranged on a pier 2 at the movable beam end 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 pier 2 through a longitudinal movable support 5, and the middle parts of the two continuous beam bodies 1 are respectively installed on the corresponding piers through longitudinal fixed supports 12.
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.
Claims (9)
1. The utility model provides a high-speed magnetic levitation beam-ends strap structure of normal conductance which characterized in that: comprises a pier, 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; the both ends of T type attachment strap track slab beam set up respectively on two continuous beam roof beam bodies, the top of pier pre-buried have with the little pier stud assorted of T type attachment strap holds solid sleeve, the little pier stud of T type attachment strap passes the roof beam seam between two continuous beam roof beam bodies and extends hold in the solid sleeve, just the bottom of the little pier stud of T type attachment strap with the top of pier is connected.
2. The end lap structure of a normally-conducting high-speed magnetic levitation beam as recited in claim 1, wherein: an anchoring screw is embedded in the bottom of the small T-shaped butt strap pier stud; the top of pier has well kenozooecium, it is located to hold solid the sleeve the top of well kenozooecium, just hold and have a first through-hole in the bottom surface of solid the sleeve in advance, hold solid the sleeve with reserve the second through-hole on the pier part between well kenozooecium, the bottom of anchor screw passes in proper order first through-hole with extend behind the second through-hole in the well kenozooecium and fixed through the nut.
3. The end lap structure of a normally-conducting high-speed magnetic levitation beam as recited in claim 2, wherein: a cavity with an opening facing the hollow part is arranged on the pier part of the top surface of the hollow part, and the cavity is communicated with the second through hole; install spiral pre-compaction spring in the cavity, the bottom of anchor screw rod passes in proper order first through-hole, the second through-hole reaches behind the well cavity of spiral pre-compaction spring extend in the well kenozooecium and pass through the nut is fixed.
4. A normally-conductive high-speed magnetic levitation beam end strap structure as claimed in claim 3, wherein: and a cushion block is arranged between the spiral pre-pressing spring and the screw cap, and the cushion block is sleeved on the anchoring screw rod.
5. A normally-conductive high-speed magnetic levitation beam end strap structure as claimed in claim 3, wherein: the anchor screw has many, just first through-hole, the second through-hole the cavity, spiral pre-compaction spring with the nut all with anchor screw one-to-one.
6. The end lap structure of a normally-conducting high-speed magnetic levitation beam as recited in 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.
7. The end lap structure of a normally-conducting high-speed magnetic levitation beam as recited in claim 6, wherein: 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.
8. The end lap structure of a normally-conducting high-speed magnetic levitation beam as recited in claim 1, wherein: functional components are installed on two sides of the T-shaped butt strap track plate girder along the bridge direction.
9. The end lap structure of a normally-conducting high-speed magnetic levitation beam as recited in 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 a longitudinal movable support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011595727.0A CN112726388A (en) | 2020-12-29 | 2020-12-29 | High-speed magnetic levitation beam end lapping plate structure of normal conduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011595727.0A CN112726388A (en) | 2020-12-29 | 2020-12-29 | High-speed magnetic levitation beam end lapping plate structure of normal conduction |
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| CN112726388A true CN112726388A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011595727.0A Pending CN112726388A (en) | 2020-12-29 | 2020-12-29 | High-speed magnetic levitation beam end lapping plate structure of normal conduction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293413A (en) * | 2021-12-03 | 2022-04-08 | 中铁第四勘察设计院集团有限公司 | High-speed magnetic suspension low-position line structure and construction method thereof |
-
2020
- 2020-12-29 CN CN202011595727.0A patent/CN112726388A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293413A (en) * | 2021-12-03 | 2022-04-08 | 中铁第四勘察设计院集团有限公司 | High-speed magnetic suspension low-position line structure and construction method thereof |
| CN114293413B (en) * | 2021-12-03 | 2024-05-03 | 中铁第四勘察设计院集团有限公司 | Low-voltage line structure with high-speed magnetic suspension and construction method thereof |
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