258results about "Railway tracks" patented technology

The present invention is in the field of a National Individual Floating Transportation Infrastructure (NIfTI) wherein floating vehicles can travel by magnetic levitation and propagation. The vehicles can travel at a controllable height above the existing, albeit modified, road infrastructure and at relatively high speeds.

The invention discloses a multi-source heat pump system and a control method thereof, and relates to the technical field of road roadbed maintenance equipment. Comprising ground heat source equipment, underground heat source equipment, a first heat exchange part, a second heat exchange part and heat dissipation equipment, the ground heat source equipment and the underground heat source equipment are connected, the first heat exchange part is arranged in the ground heat source equipment, the second heat exchange part is arranged in the underground heat source equipment, the first heat exchange part and the second heat exchange part are both connected with the heat dissipation equipment, and the heat dissipation equipment is used for being buried in a road roadbed. In the first state, an inner cavity of the first heat exchange piece and an inner cavity of the second heat exchange piece both communicate with an inner cavity of the heat dissipation equipment, and the first heat exchange piece and the second heat exchange piece are both in a heat absorption state; and in the second state, the inner cavity of the first heat exchange piece and the inner cavity of the second heat exchange piece are both disconnected from the inner cavity of the heat dissipation equipment, the inner cavity of the first heat exchange piece communicates with the inner cavity of the second heat exchange piece, the first heat exchange piece is in a heat absorption state, and the second heat exchange piece is in a heat dissipation state. The problem that an existing clean energy heat pump system is large in integration difficulty can be solved.

The utility model discloses a continuous conductor plate for a magnetic suspension automobile, which comprises a first conductor plate and a second conductor plate which are connected with each other, the end part of the first conductor plate is provided with a first splicing part, the end part of the second conductor plate is provided with a second splicing part, and the shapes of the first splicing part and the second splicing part are complementary. And the first splicing part and the second splicing part are spliced together to form a continuous conductor plate. When the magnetic wheel of the magnetic suspension automobile passes through the gap between the conductor plates, the first conductor plate provides an eddy current field before passing through the gap, and the second conductor plate provides an eddy current field after passing through the gap, so that the continuity of eddy current is ensured, and the operation efficiency of the whole system of the magnetic suspension automobile and the conductor plates is improved.

The utility model discloses a local variable stiffness enhanced welding stud shear connector and a steel-concrete combined track beam. The connector comprises a thickened bottom rod, a slender middle rod and a cylindrical head which are connected in sequence, the diameter of the thickened bottom rod is greater than that of the slender middle rod; the cylindrical head is larger in diameter than the elongated middle rod. The steel-concrete combined track beam comprises a UHPC cast-in-place bridge deck slab, a local variable stiffness enhanced welding stud shear connector and a track steel beam, and the local variable stiffness enhanced welding stud shear connecting piece is welded on the top surface of the track steel beam and is used for connecting the track steel beam with the UHPC cast-in-place bridge deck at the upper part. The connecting piece has the advantages of being suitable for the steel-concrete combined track beam and aiming at solving the problems that a traditional shearing force connecting piece is insufficient in shearing bearing capacity under the complex dynamic load environment, a concrete panel is prone to cracking and the like, and therefore the overall bearing capacity, durability and anti-cracking performance of the track beam are improved, and the quality and efficiency of the cast-in-place construction technology are optimized.

The utility model discloses a light overhead roadbed structure which comprises an upper main body structure, the upper main body structure is in a segment type, an expansion joint is arranged between the adjacent upper main body structures in the line direction, the lower end of the upper main body structure is provided with a joist structure connected with the upper main body structure, and the joist structure is supported by a pile structure. And thick broken stone hardcore layers in contact with the upper main body structure are further paved between the beam structures. The middle of the overhead roadbed structure is hollow, the overhead roadbed structure has the advantages of being small in filler amount, light in weight, small in soil body additional stress and capable of remarkably reducing post-construction settlement caused by the additional stress. The overhead roadbed structure is small in structural size in the cross section direction, has the advantage of being small in occupied area, and can save land. The overhead roadbed structure adopts a foundation form of the joists and the cast-in-situ bored piles, has the characteristics of high stability and strong lateral deformation resistance, and is safe and reliable in structure.

The invention relates to the technical field of rail traffic, in particular to a rail traffic steel rail vibration and noise reduction device which comprises a steel rail section, the left side and the right side of the steel rail section are both fixedly connected with vibration reduction mechanisms, and the tops of the two vibration reduction mechanisms are both movably connected with noise reduction mechanisms. The efficient and stable rail transit steel rail vibration and noise reduction function is achieved, when a vehicle passes through the vibration reduction mechanism and the noise reduction mechanism, vibration and noise generated by the vehicle can be effectively absorbed and buffered, a spring assembly in the vibration reduction mechanism elastically deforms under the pressure of the vehicle, vibration energy is converted into elastic potential energy, and the vibration reduction mechanism is arranged on the vibration reduction mechanism. Excessive transmission of vibration is avoided; and parts such as a rubber pressing plate and a second spring in the noise reduction mechanism preliminarily buffer the pressure of the vehicle and reduce noise through self deformation and elastic recovery when the vehicle passes by, and meanwhile, the stability of the whole device is greatly improved through the linkage design of all the parts.

The invention relates to a single-hole double-track tunnel mid-partition wall construction method, which is based on synchronous construction of tunnel shield, bow-shaped piece installation and flue plate installation, and comprises the following steps: S1, carrying out mid-partition wall position lofting in an area where a bow-shaped piece is installed behind a shield tunneling machine, and completing steel bar planting operation of a mid-partition wall; s2, a movable door type steel platform is used for binding reinforcing steel bars of the mid-partition wall along the embedded reinforcing steel bars on the bow-shaped piece; s3, top flue plates at the corresponding positions are installed synchronously by means of the movable door type steel platform, and steel bars at the corresponding positions of the top of the middle partition wall are connected with the flue plate embedded connectors; during shield tunneling construction, the movable door type steel platform and the steel mould trolley are synchronously used for construction of the mid-partition wall, and while transportation of a construction vehicle is not affected, concrete pouring of the mid-partition wall is conducted from the upper portion of the flue plate in a pumping mode, so that synchronous construction of the mid-partition wall and shield tunneling is completed; the purpose of improving the middle partition wall construction efficiency is achieved.

To provide a girder end structure and branching device that can improve durability. [Solution] The mounting surface 46b of the plate member 46 is placed on the upper surface 43a side of the base 41 of the movable girder 12f, and the plate member 46 is fastened to the base 41 by bolts 48 and nuts 49 that penetrate the plate member 46 and the base 41 in the vertical direction. The pressure receiving body 51 of the pressure receiving member 50 is fitted into the upper hole 46e opened in the mounting surface 46b. The pressure receiving body 51 and the overhanging portion 52 that extends vertically from the lower end of the pressure receiving body 51 are fitted into the lower hole 43c opened in the upper surface 43a. In this state, the hooking portion 47c that faces the overhanging portion 52 in the vertical direction is placed on the upper surface 43a of the base 41. As a result, the durability of the girder end structure 40 can be improved.

The invention discloses an integrated track coil for a superconducting electric aerotrain and a track beam structure of the integrated track coil, relates to the technical field of magnetic suspension, and solves the technical problems that an existing track coil is low in maintenance efficiency and high in manufacturing cost due to the fact that the number of used coils is large. The integrated track coil comprises a coil module, the coil module comprises coil boxes, and the coil boxes are installed on the two sides of a track base; the two groups of zero magnetic flux coils are arranged in the coil box, and the zero magnetic flux coils are positioned in the coil box; bending parts are arranged at the two ends of the propelling coil in the longitudinal direction, the zero-magnetic-flux coil is located between the bending parts, and the zero-magnetic-flux motor has the advantages that maintenance is convenient, and the number of used coils and the manufacturing cost are reduced.

The present application relates to a kind of railway widening roadbed through active fault method and system, belong to traffic engineering technical field, the method utilizes active fault rotation direction, average annual horizontal sliding rate and its included angle with the direction of railway line as parameter, calculates the displacement amount along the vertical line direction within the design annual use limit of railway, multiplied by design safety factor, obtains roadbed design widening value.The present application provides control basis for the determination of roadbed widening value when railway passes through active fault zone in the form of roadbed, guarantees the economy and safety of railway operation.

The invention discloses a track device which comprises a track plate, magnetic suspension traction faces are arranged at the bottoms of the two sides of the track plate in the width direction respectively, guide faces are arranged on the side portions of the two sides of the track plate in the width direction respectively, and sliding faces are arranged at the tops of the two sides of the track plate in the width direction respectively. Two parallel steel rails are further arranged at the top of the track plate, extend in the length direction of the track plate and are correspondingly located on the sides, away from the edge of the track plate, of the two sliding faces respectively. The maglev traction surface, the guide surface and the sliding surface are interfaces for the maglev train, so that the maglev train can run along the track plate; the steel rail is an interface for a railway train, so that the railway train runs along the track plate; the track plate can be a conventional maglev track plate and is simultaneously used for supporting a steel rail, the interface for the maglev train and the interface for the railway train do not interfere with each other, and collinear operation of the maglev train and the railway train can be realized, namely, the track device can be compatible with the maglev train and the railway train.

The utility model relates to the technical field of rail transit damping devices, and particularly discloses a rail transit rubber composite damper which comprises an upper metal plate, a rubber column and a lower metal plate, the two ends of the rubber column are connected with the upper metal plate and the lower metal plate respectively, and a threaded sleeve is arranged at the bottom of the rubber column. A through hole is formed in the position, corresponding to the threaded sleeve, of the lower metal plate, a plurality of annular mounting grooves are longitudinally distributed in the outer side wall of the rubber column, and a memory alloy wire is arranged in each layer of mounting groove and spirally wound in the axial direction of the rubber column. The multiple layers of memory alloy wires are arranged on the outer side of the rubber column and matched with an adjusting mechanism, the shock absorber can automatically adjust the shock absorption performance according to the train operation working condition, the train operation stability is improved, and the riding comfort of passengers is improved.

A pivot-type suspended monorail multi-way turnout beam and a traveling rail jointing device thereof. The traveling rail jointing device for the pivot-type suspended monorail multi-way turnout beam includes: a jointing plate (10), a rotating support seat (20), a lever (30) and a push-pull assembly (40). The jointing plate (10) is disposed with a rotation shaft (12) thereon along an extension direction of a plate surface thereof. The rotation shaft (12) is rotatably embedded on the rotating support seat (20). A first end of the lever (30) is fixed on the jointing plate (10), and a second end of the lever (30) is connected to the push-pull assembly (40). The technical solution of the disclosure can realize reliable jointing for pivot-type suspended monorail multi-way turnout beams through a simple structure.

The application discloses an isolation structure and method for reducing displacement of a railway pile foundation caused by shield construction, and the isolation structure comprises underpinning beams and 2N columns of inclined piles, and N is greater than or equal to 2; the underpinning beams are located below an existing railway subgrade; each column of inclined piles comprises a plurality of inclined piles with the same inclination direction and inclination angle; the 2N columns of inclined piles are divided into two groups; the pile bottoms of one group of the inclined piles are located on one side of a to-be-constructed shield tunnel, and the pile bottoms of the other group of the inclined piles are located on the other side of the to-be-constructed shield tunnel; two adjacent columns of inclined piles in the same group are arranged in an X-shaped cross mode; the pile tops of the two groups of the inclined piles are connected with the underpinning beams and form a portal type support structure; the to-be-constructed shield tunnel passes through the portal frame surrounded by the inclined piles and the underpinning beams; and the two groups of the inclined piles are located between original railway pile foundations and the to-be-constructed shield tunnel. The application can resist the horizontal deformation of the original railway pile foundations caused by the shield tunnel construction, reduce the settlement of the railway subgrade, and effectively protect the normal operation of the railway.

The invention relates to a medium-low speed magnetic suspension rail transit standard beam, and relates to the technical field of rail transit. The medium-low speed magnetic suspension rail transit standard beam comprises a rail bearing table and a U-shaped beam, the U-shaped beam comprises a bottom plate and two bent beams located at the two ends of the bottom plate. The rail bearing table comprises a supporting structure and a top plate, the supporting structure is arranged on the bottom plate, and the top plate is arranged on the supporting structure; the U-shaped beam and the supporting structure are symmetrical about the line center line. The rail bearing table and the U-shaped beam are integrally formed. The rail bearing table and the U-shaped beam are integrated and integrally prefabricated in a beam field, the rail bearing table is longitudinally full-length and free of breaking joints, the rail bearing table and the U-shaped beam jointly participate in structural stress, the construction process is simplified, the workload of cast-in-place is reduced, and the quality of the beam is guaranteed.

The invention discloses an overall coating rack linkage device which comprises a steel rail piece installed on a base plate through a fastener, a forked rack is further fixed to the base plate, a sliding bed table is further installed on the base plate, and a pair of movable racks with the front ends used for being matched with the forked rack is further rotationally installed on the sliding bed table. Fixed racks are arranged at the positions, corresponding to the heel ends of the movable racks, of the upper end of the sliding bed table, and the pair of movable racks is in driving connection with the corresponding connecting rods through connecting assemblies. A stop block with a stop groove is arranged at the end, close to the movable rack, of the forked rack, protruding teeth used for being matched with the stop groove are arranged at the end, close to the forked rack, of the movable rack, a covering block is fixed to the transition portion of the movable rack, and a covering groove is formed in the position, corresponding to a steel rail piece, of the lower half portion of the covering block. According to the invention, the structure is reasonable, the tooth staggering problem can be effectively avoided, meanwhile, the connection tightness of the movable rack and the forked rack can be improved, and the normal operation of a line is ensured.

The application discloses a kind of magnetic levitation track adjusting device and its control method, magnetic levitation track, it is related to track adjusting technical field.Magnetic levitation track adjusting device includes: work platform, for with track beam synchronous deformation;Suspension magnet, parallel to the side of work platform;Detection adjusting component, including telescopic drive and temperature detection device, telescopic drive connects suspension magnet on work platform, and temperature detection device is arranged on work platform;Controller, temperature detection device, telescopic drive are all connected in communication on controller, and controller is used to determine the deformation of track beam according to the temperature detected by temperature detection device, and controls the position of telescopic drive in the same detection adjusting component and adjusts suspension magnet.Adjusting device can avoid suspension magnet synchronous deformation along with track beam by monitoring temperature, judging the deformation of track beam to adjust the height of corresponding position of suspension magnet, to avoid suspension magnet synchronous deformation along with track beam, to avoid the influence of track beam temperature deformation on train operation.

The utility model discloses a steel spring outer sleeve with vertical adjustment capability. The sleeve comprises a sleeve body, a connecting claw, a protective cover mounting base plate, a first-stage jacking position and a second-stage jacking position, the plurality of connecting claws are uniformly arranged on the peripheral surface of the sleeve body in the circumferential direction and are used for being combined with an external steel spring floating slab; a plurality of first-level jacking positions and a plurality of second-level jacking positions are installed on the inner wall of the sleeve body in the circumferential direction at intervals, the first-level jacking positions and the second-level jacking positions are sequentially and alternately arranged on the inner surface of the sleeve body in the circumferential direction and are different in height, and a protective cover installation base plate is installed on the inner wall, over the first-level jacking positions, of the sleeve body. The adjusting capacity of the steel spring floating slab type ballastless track can be greatly improved, and the steel spring floating slab type ballastless track is suitable for urban rail transit to pass through areas where unfavorable geology and special vibration reduction requirements coincide.

The utility model discloses a U-shaped groove structure of a railway transition section, which comprises a U-shaped groove mechanism, the U-shaped groove mechanism is arranged at the upper end of a pile foundation, and a backfill soil layer is arranged on the inner side of the U-shaped groove mechanism; the U-shaped groove mechanism comprises a bottom plate and side walls; the bottom plate is connected to the upper end of the pile foundation, and the two ends of the bottom plate are connected with the side walls. The backfill soil layer comprises a foundation bed body, a foundation bed bottom layer and a foundation bed surface layer; the foundation bed body, the foundation bed bottom layer and the foundation bed surface layer are sequentially arranged on the bottom plate from bottom to top. And the upper end of the pile foundation is connected with a steel casing. The lower end face of the bottom plate is connected with a cushion layer. The U-shaped groove structure of the railway transition section aims to overcome existing defects, and smoothness and operation safety of a track are guaranteed.

The utility model relates to the technical field of vibration tests, and particularly discloses an aeolian sand roadbed vibration wave excitation test device which comprises an excitation mechanism, a clamping mechanism and a data acquisition mechanism. The vibration excitation mechanism comprises a signal generator, a power amplifier and a vibration exciter; the clamping mechanism comprises a clamping plate, a bolt and a transverse plate. The data acquisition mechanism comprises an acceleration sensor, a dynamic data acquisition unit and a data processor. Through the arranged excitation mechanism, the excitation state of a train at different speeds and under different load conditions can be effectively simulated by adjusting the output frequency and excitation force, the damage condition of the aeolian sand improved soil under different excitation conditions can be accurately obtained, and the damage condition of the aeolian sand improved soil under different excitation conditions can be accurately detected through the arranged data collector. The dynamic response characteristics of the cement modified aeolian sand sample under the excitation condition can be effectively obtained, so that the internal change of the cement modified aeolian sand sample is judged.

A pedestrian level crossing (1) comprises a first rail (R1), a second rail (R2), and a rail gap (D) between the first rail (R1) and the second rail (R2), the first rail (R1) and the second rail (R2) each having a foot (RP). A first cross member (21) and a second cross member (22) are fixed to the foot (RP) of the first rail (R1) below said foot (RP); a third cross member (23) and a fourth cross member (24) are fixed to the foot (RP) of the second rail (R2) below said foot (RP). A central panel (91) is fixed in the rail gap (D) to the first cross member (21), the second cross member (22), the third cross member (23), and the fourth cross member (24), the central panel (91) being made of an electrically insulating material. Specific application to electrified railways, to protect against electrocution due to electric currents flowing in the rails.Figure for the abbreviation: Figure 5.

An overhead conveying device (1a..1c'') for an order-picking system is specified which comprises a carrying structure (2a..2b, 71), a transport carrier (3, 3a..3c'') which is movable on the carrying structure (2a..2b, 71) for transporting hanging goods (4), and a drive device (10a, 10b, 72a, 72b) for moving the transport carrier (3, 3a..3c'') on the carrying structure (2a..2b, 71). Moreover, the transport carrier (3, 3a..3c'') can have a drive wheel (13a..13b', 45a, 45b, 73a, 73b, 75a, 75b) which is coupled to a motor (11a, 11b, 77a, 77b), an energy source (87) which is connected to the motor (11a, 11b, 77a, 77b), a holding force generator (83a, 83b, 85), by way of which the transport carrier (3, 3a...3c'') adheres movably to the carrying structure (71), and / or a movement controller (95) and a memory (96) which is connected to it and is of writable and readable configuration. Furthermore, the overhead conveying device (1a..1c'') can have a diverter (37, 37a, 37b) with a diverter element (38, 62) which is movable vertically onto a level of the running surface (A, A1, A2) of the guide rail (2a..2b) or away from it.

This application relates to the field of track technology, and in particular provides a waterproof track device, including a conductor, a top beam, a first support, a second support, and a brush. The top beam is positioned above the conductor, the first support is positioned on one side of the conductor, the second support is positioned on the other side of the conductor, and the brush is positioned below the conductor. The top beam, the first support, the second support, and the brush together form a hollow cavity structure. The conductor is located within the hollow cavity, which can prevent water from seeping in from the top, left, right, and bottom of the conductor, thereby improving the waterproofness and sealing performance of the conductor. Furthermore, a sealing element is provided at the bottom of the conductor, located above the brush, serving as a second line of defense. Combined with the brush, it provides a double waterproofing effect, further improving the waterproofness and sealing performance of the conductor, and also preventing impurities, insects, etc., from entering the interior of the conductor.

An adjustable spacer (80) for adjusting a spacing between two objects, comprising: i) a first rotatable indexing mechanism (82), the first rotatable indexing mechanism (82) configured to rotate in a first rotational direction about an axis of rotation; and ii) a second rotatable indexing mechanism (84), the second rotatable indexing mechanism (84) configured to rotate in a second rotational direction about an axis of rotation, the second rotational direction being opposite to the first rotational direction, wherein the first and second rotatable indexing mechanisms The indexing mechanisms (82, 84) are configured to change the length of the adjustable spacer (80) along the axis of rotation by a first length when the first rotatable indexing mechanism (82) rotates a given angular rotation in a first rotational direction about the axis of rotation, and to change the length of the adjustable spacer (80) along the axis of rotation by a second length when the second rotatable indexing mechanism (84) rotates the same given angular rotation in a second direction about the axis of rotation, the second length being the same or different from the first length of the adjustable spacer (80).

The utility model relates to novel straddle type monorail three-section track changing equipment which can meet the requirement for efficient track changing of multi-turnout vehicles in a station yard and save space and comprises a bottom plate, a track and a locking device, the track is located on the bottom plate, a walking trolley is located on the track, and a plurality of turnout beams are located on the walking trolley. One end of the turnout beam is provided with a piled beam and a slewing device, the other end of the turnout beam is provided with a plurality of piled beams, a slewing crank arm mechanism is arranged at the bottom of the turnout beam, rollers on the slewing crank arm mechanism do linear motion in a fixed bottom plate and a guide groove in a track, and the slewing crank arm mechanism is driven by a driving device. The method has the advantages that the problem that the vehicle base space is limited is solved, and the requirement for small-space vehicle base route planning is met; signal receiving and safety feedback requirements are met, and the characteristics of linkage interlocking, flexible action, safety, reliability and the like are achieved; narrow space of a parking lot is fully utilized, the structure is compact, and functions are complete; and fourthly, the part design has good manufacturing manufacturability, and the manufacturing cost is favorably controlled.

The invention provides an embedded track for a metro depot wall type inspection pit and a construction method thereof.The embedded track comprises the inspection pit, notches are formed in the tops of the two side faces in the inspection pit, a track bed is arranged on the notches, a track bearing groove is formed in the upper surface of the track bed, and the track bed is divided into a track bed outer side wall and a track bed inner side wall through the track bearing groove; the top end of the ballast bed inner side wall is lower than the top end of the ballast bed outer side wall, a rail lower base plate and a steel rail are arranged in the rail bearing groove, a plurality of transverse maintaining assemblies are arranged on the two sides of the steel rail correspondingly, each transverse maintaining assembly comprises a supporting block and a supporting frame, the supporting blocks are obliquely arranged on the rail web of the steel rail, and first sawteeth are arranged on the sides, away from the steel rail, of the supporting blocks. One side of the supporting frame is attached to the side wall of the rail bearing groove, second sawteeth meshed with the first sawteeth are arranged on the other side of the supporting frame, and the rest space in the rail bearing groove is filled with high polymer materials. The device is suitable for being used in the inner wall type inspection pit of the metro depot and has good vibration and noise reduction performance.

The utility model discloses an anti-dead-attraction device for a maglev train, which belongs to the technical field of safety driving devices for maglev trains and comprises a maglev track and a magnetic attraction component mounted on the surface of the maglev track, and a guide component is erected outside the maglev track. The supporting plate is fixed to the surface of the magnetic suspension track through a locking piece, the inner wall of a groove in the surface of the supporting plate is fixedly connected with a shaft rod, the exterior of the shaft rod is rotationally connected with a guide wheel, the magnetic suspension train directionally travels along the magnetic suspension track, and in the traveling process, the guide wheel rotates at a high speed under aerodynamic force of the traveling area of the magnetic suspension train. When the height fluctuation phenomenon of the maglev train occurs, the guide wheels have good isolation, auxiliary supporting and guiding performance on the maglev train, so that a good anti-dead-suction protection effect is achieved, and the driving safety is improved; and the drainage groove is formed in the bottom of the supporting plate and communicated with the groove, so that rainwater is conveniently drained, and the working area of the guide wheel is kept dry.

The present application relates to the field of rail transit, in particular to a magnetic type vibration isolator failure indicating device and its application method. The device comprises a fixed connecting seat and a height reference rod, and further comprises a warning head, a reverse pulling elastic element and a permanent magnetic suction head. The height reference rod partially penetrates the fixed connecting seat, and the warning head with a warning mark is arranged at the top of the height reference rod. The reverse pulling elastic element is arranged between the warning head and the fixed connecting seat or between the fixed connecting seat and the permanent magnetic suction head. The permanent magnetic suction head is arranged at the bottom of the height reference rod. The suction force of the permanent magnetic suction head is greater than the maximum rebound force of the reverse pulling elastic element, and is less than the total mass of the metal element fixed by the permanent magnetic suction head. A locking connection structure is arranged on the fixed connecting seat. The present application uses the magnetic type vibration isolator failure indicating device to monitor the working state of the steel spring vibration isolator of the built-in vibration isolation device in the floating slab track bed. The method is simple to operate, good in intuitiveness, high in accuracy, and has a very broad market application prospect.

The invention relates to the technical field of rail transit, and discloses a straddle type monorail track beam prestress self-compensation structure and a control method. The prestressed steel beams are longitudinally arranged on a web plate and a bottom plate of the track beam; the pull rod bundle comprises a plurality of pull rods arranged in the center of the track beam bottom plate, and the line type of the pull rods is the same as that of the prestressed steel bundle; the anchorage devices are installed at the two ends of the track beam and matched with the prestress steel beams and the pull rod beams respectively; the heating wire is wound on the surface of the pull rod bundle; the insulating layer is mounted on the outer side of the heating wire; the plurality of fiber grating sensors are respectively embedded in the midspan position and the quarter-span position at the two ends of the track beam and are used for capturing the prestress change of the track beam; and the PLC is connected with the plurality of fiber grating sensors and the heating wire through cables. Through automatic compensation of the SMA pull rods, the prestress loss rate is effectively controlled, and the rigidity stability of the track beam body is improved.