Straddle-type monorail track structure with support and construction method thereof

Abstract

The application discloses a straddle-type monorail track structure with supports and a construction method thereof, and belongs to the technical field of the track structure with supports, which comprises a plurality of beam body units arranged in sequence along the longitudinal direction, a track beam structure is formed by sequentially assembling the beam body units, at least one support is arranged on the two sides of each beam body unit to ensure the structural stability of the beam body unit, fastening connection of various structural members is realized through a connecting portion, a shock insulation pad is further arranged in the connecting portion to improve the anti-seismic toughness of the overall structure of the track beam, and a grating plate with a manhole is further arranged on the support on the two sides of the beam body unit to facilitate personnel passage and maintenance of the track structure through the manhole. The straddle-type monorail track structure with supports can greatly improve the construction efficiency while ensuring the structural stability, and can have multiple functions of anti-seismic, maintenance and drainage, and can generate good economic value and social benefits.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of assembled track structure, and particularly relates to a straddle-type monorail track structure with support and a construction method thereof. BACKGROUND

[0002] The straddle-type monorail traffic is a track traffic system in which vehicles run on a track beam through rubber wheels. The one-way peak hour transport capacity is 10-30 thousand people, belonging to a medium-capacity urban track traffic system. The straddle-type monorail is a track traffic mode in which a single track beam supports, stabilizes and guides a vehicle body running on the track beam through rubber tires.

[0003] At present, the track structure of the straddle-type monorail tunnel mainly has two forms. One is a common full-precast and semi-precast track wall, which has a simple structure and is easy to construct. Although the precast track structure can reduce the weight of each section by shortening the section length to facilitate construction and hoisting, part of the precast track structure needs to be cast in situ, and the construction period is long. The other is a pier-type track structure, which can flexibly adjust the track height, but part of the structure needs to be cast in situ, and the assembly process is complex and the construction period is long.

[0004] Therefore, there is a need for an assembled track structure that can realize rapid assembly of the track beam structure to be applied to various tunnel scenarios. SUMMARY

[0005] In view of one or more of the above defects or improvement needs of the prior art, the present application provides a straddle-type monorail track structure with support and a construction method thereof, which realizes rapid assembly of the track structure in the tunnel through the combination of the beam body unit and the support members arranged on both sides thereof, so as to improve the construction efficiency.

[0006] To achieve the above-mentioned purpose, the present application provides a straddle-type monorail track structure with support, which is arranged on a tunnel floor and comprises a plurality of beam body units arranged in sequence along the longitudinal direction. A first connecting portion is arranged between the beam body unit and the tunnel floor to connect the beam body unit and the tunnel floor.

[0007] At least one support member is arranged on each lateral side of the beam body unit. One end of the support member is fixedly arranged on the side wall surface of the beam body unit, and the other end is fixedly connected with the tunnel floor.

[0008] As a further improvement of the present application, the connecting position of the support member and the tunnel floor is not higher than the connecting position of the support member and the beam body unit in the height direction.

[0009] As a further improvement of the present application, the support member is one of a profile steel member, a reinforced concrete member or a steel cylinder member.

[0010] As a further improvement of the present application, the first connecting part comprises a steel plate arranged at the bottom of the beam body unit and a bolt structure arranged at the tunnel bottom plate, the steel plate is provided with a through hole corresponding to the bolt structure, and the beam body unit and the tunnel bottom plate are connected through fastening connection of the bolt structure and the steel plate.

[0011] As a further improvement of the present application, a cavity is formed in the beam body unit to reduce the self weight of the beam body unit.

[0012] As a further improvement of the present application, a shock isolation pad is arranged between the beam body unit and the support, between the beam body unit and the tunnel bottom plate, and between the support and the tunnel bottom plate.

[0013] As a further improvement of the present application, a positioning part and / or a second connecting part are arranged between the two adjacent beam body units to realize positioning and / or connection of the two adjacent beam body units.

[0014] As a further improvement of the present application, a grating plate is arranged at each side of the beam body unit, the grating plate is arranged on the top of the support and is fixedly connected with the support.

[0015] The present application further provides a construction method of the assembled track structure of the straddle-type monorail with support, comprising the following steps:

[0016] S1, determining the track structure according to the line design parameters and the tunnel parameters, and then obtaining the size of the beam body unit, the size of the support, and selecting the arrangement form of the support;

[0017] S2, constructing the tunnel bottom plate, embedding the bolt sleeve on the tunnel bottom plate, or assembling the pipe piece with the embedded bolt sleeve to form the required tunnel bottom plate;

[0018] S3, installing the beam body unit and the support;

[0019] S4, installing the grating plate;

[0020] S5, checking whether the structural parts in the track structure are stably connected, and tightening the bolts;

[0021] S6, pouring the plain concrete and constructing the water ditch.

[0022] As a further improvement of the present application, the step S3 comprises the following specific steps:

[0023] S31, arranging the steel plate structure corresponding to the embedded bolt sleeve and placing the shock isolation pad;

[0024] S32, place the beam body unit on the shock insulation pad, and tighten the bolts to realize the fastening connection between the beam body unit and the tunnel bottom plate;

[0025] S33, the next beam body unit installation is carried out, and positioning is carried out through the positioning part;

[0026] S34, the bolts of the second connecting part are tightened to realize the connection between the beam body units;

[0027] S35, install the support, align the through hole of the steel plate on the support with the bolt structure arranged on the beam body unit and the tunnel bottom plate, and respectively arrange the shock insulation pad between the support and the beam body unit and the tunnel bottom plate, respectively tighten the bolts of the third connecting part and the fourth connecting part, and complete the installation of the support;

[0028] S36, pour the filling material between the beam body units and between the support and the tunnel bottom plate.

[0029] The above improved technical features can be combined with each other as long as they do not conflict with each other.

[0030] Overall, compared with the prior art, the above technical solutions conceived by the present application have the beneficial effects including:

[0031] (1) The assembled track structure with supports of the straddle-type monorail and the construction method thereof, by dividing the track beam into multiple beam body units and arranging the beam body units on the tunnel bottom plate and the segment, and the beam body unit structure can be selected according to the construction site, so that the track beam structure can be applied to various tunnel structures;

[0032] (2) The assembled track structure with supports of the straddle-type monorail and the construction method thereof, by arranging the support on both sides of the beam body unit, which is used to provide lateral support to the beam body unit to enhance the stability of the beam body unit, and the support is preferably arranged perpendicular to the beam body unit, so that the support force is approximately axial pressure or axial tension, and the support force is in good condition, which can be used for a long time to reduce maintenance costs;

[0033] (3) The assembled track structure with supports of the straddle-type monorail and the construction method thereof, by the first, second, third and fourth connecting parts respectively realizing the fastening connection between the beam body units and the tunnel bottom plate, between the beam body units, between the beam body units and the support, and between the support and the tunnel bottom plate, the connecting part adopts bolt connection to realize the rapid assembly of the track structure and improve the construction efficiency;

[0034] (4) The straddle-type monorail track structure with support and its construction method, by adding the steel plate structure in the first, third and fourth connecting parts to adjust the position, and setting the shock isolation pad between the two steel plate structures, can effectively reduce the vibration when the train is running, and improve the anti-seismic toughness of the structure;

[0035] (5) The straddle-type monorail track structure with support and its construction method, by setting the grating plate on the top of the support, so that the staff can pass through, and a manhole is opened correspondingly, so that the staff can maintain and repair the track structure, the grating plate structure can also be welded with the steel structure in the beam body unit and the tunnel bottom plate, improving the structural stability, and the water ditch is arranged on the tunnel bottom plate, which can prevent bolt corrosion and facilitate drainage. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is the overall structure front view of the straddle-type monorail track structure with support in the embodiment of the present application;

[0037] Figure 2 is the cross-sectional view of the straddle-type monorail track structure with support in embodiment 1 of the present application;

[0038] Figure 3 is the cross-sectional view of the straddle-type monorail track structure with support in embodiment 2 of the present application;

[0039] Figure 4 is the top view of the straddle-type monorail track structure with support in the embodiment of the present application when the grating plate is not installed;

[0040] Figure 5 is the top view of the straddle-type monorail track structure with support in the embodiment of the present application;

[0041] In all the drawings, the same reference signs represent the same technical features, specifically: 1, beam body unit; 2, tunnel bottom plate; 3, support; 4, grating plate; 5, first connecting part; 6, second connecting part; 7, third connecting part; 8, fourth connecting part. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0043] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does 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 cannot be understood as a limitation of the present application.

[0044] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0045] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0047] Embodiment:

[0048] Please refer to Figures 1 to 5The assembled track structure with support of the preferred embodiment of the present application and the construction method thereof comprise a plurality of beam body units arranged in sequence along the longitudinal direction, the beam body units are assembled in sequence along the longitudinal direction to form a track beam structure, a first connecting part is arranged between the beam body unit and the tunnel bottom plate to realize the connection of the two, and two adjacent beam body units in the longitudinal direction are connected through a second connecting part, and support members are arranged on both sides of the beam body unit for supporting the beam body unit, and the beam body unit and the support member are arranged as a prefabricated structure to realize rapid assembly and construction at the construction site.

[0049] Specifically, the beam body unit 1 is arranged on the tunnel bottom plate, and the beam body unit 1 and the tunnel bottom plate are connected through the first connecting part. The first connecting part comprises at least one steel plate arranged at the bottom of the beam body unit 1, and the steel plate is fixedly connected with the beam body unit 1. Correspondingly, a bolt sleeve is pre-buried on the tunnel bottom plate, and the fixed connection between the tunnel bottom plate and the steel plate is realized through a bolt structure, thereby completing the connection between the beam body unit 1 and the tunnel bottom plate.

[0050] Further, the front and rear ends of the steel plate are flush with the longitudinal ends of the beam body unit 1, and the steel plate extends along the two lateral sides, so that the beam body unit 1 and the steel plate form a reverse "T" type structure to provide additional support area and increase the load carrying capacity, which can be used to transfer beam load to the tunnel bottom plate. Further preferably, a through hole is formed in the two lateral sides of the steel plate, penetrating the upper and lower end faces of the steel plate, and the through hole is a plurality of holes arranged along the longitudinal direction, so that the bolt structure can pass through the through hole and be tightened by a nut to press the steel plate against the tunnel bottom plate 2.

[0051] Further, a steel plate can be arranged between the steel plate and the tunnel bottom plate 2 of the first connecting part 5 to adjust the height to a certain extent. Further preferably, a shock absorption pad can be arranged between the two steel plates to realize shock absorption during vehicle operation.

[0052] In addition, the bolt structure is preferably a U-shaped bolt, one end of the U-shaped bolt away from the connecting head is pre-buried in the tunnel bottom plate 2, two connecting heads in the U-shaped bolt are arranged along the longitudinal direction, and a plurality of U-shaped bolts are arranged along the longitudinal direction to match the through holes on the steel plate. Further, in the shield tunnel, the U-shaped bolt is integrally prefabricated with the segment, and the U-shaped bolt structure comprises a U-shaped sleeve and a bolt piece, the U-shaped sleeve is pre-buried in the segment, and one end of the U-shaped sleeve away from the connecting part is fixedly connected with the steel bars inside the segment by welding to obtain the required segment structure.

[0053] Further, the support member 3 is arranged on both sides of the beam unit 1, and the two ends of the support member 3 are fixedly connected with the beam unit 1 and the tunnel bottom plate 2 respectively, wherein the connection position of the support member 3 with the tunnel bottom plate 2 is not higher than the connection position of the support member 3 with the beam unit 1 in the height direction (i.e. the vertical direction), so that the included angle between the support member 3 and the beam unit 1 on the side close to the tunnel bottom plate 2 is ≤ 90°.

[0054] Further, the support member 3 is one of a profile steel member, a reinforced concrete member or a steel cylinder member, and the steel cylinder member can be filled with concrete to form a steel pipe concrete structure to improve the overall strength of the support member 3. Further preferably, the support member 3 can be a plurality of members arranged at intervals along the longitudinal direction.

[0055] Further, a third connecting part 7 is arranged between the support member 3 and the beam unit 1, and a fourth connecting part 8 is arranged between the support member 3 and the tunnel bottom plate 2, wherein the third connecting part 7 comprises a pre-buried sleeve pre-buried in the beam unit 1 and a steel plate structure fixedly connected with the support member 3, and the steel plate structure is provided with bolt holes to be fixedly connected with the beam unit 1 by bolts, so as to realize the connection between the support member 3 and the beam unit 1. The fourth connecting part 8 comprises a bolt structure pre-buried in the tunnel bottom plate 2 (or segment) and a steel plate structure fixedly arranged on the end face of the support member 3, and the two are connected by bolts to realize the fixed connection between the support member 3 and the tunnel bottom plate 2. Further preferably, when designing the track structure, the arrangement angle of the support member 3 is determined, and then the angle between the support member 3 and the steel plate structure is determined, and when the steel plate structure is welded on the end face of the support member 3, the steel plate structure is just matched with the side wall face of the beam unit 1 and the surface of the tunnel bottom plate 2.

[0056] Further, in the third connecting part 7, one end of the pre-buried sleeve protrudes from the side wall face of the beam unit 1, and a steel plate structure is fixedly connected with the protruding part of the pre-buried sleeve, and the surface of the steel plate structure is matched with the side wall face of the beam unit 1, so that the steel plate structure arranged on the support member 3 does not directly contact with the beam unit 1, and different thicknesses of the steel plate structure can be selected to adjust the relative distance between the support member 3 and the beam unit 1. Further preferably, a shock isolation pad can be arranged between the two steel plate structures to achieve the damping effect.

[0057] Correspondingly, in the fourth connecting part 8, at least one steel plate can be arranged between the steel plate structure fixedly connected with the support member 3 and the tunnel bottom plate 2, and the relative distance between the support member 3 and the tunnel bottom plate 2 can be adjusted by changing the number of steel plates and selecting steel plate structures of different thicknesses. Similarly, a shock isolation pad can be arranged between the two steel plate structures to achieve the damping effect.

[0058] Further, the first connecting part 5, the third connecting part 7 and the fourth connecting part 8 each include a pre-buried sleeve embedded in the concrete structure and a steel plate structure arranged on the object to be connected, and the fixed connection of the two is realized by the fastening connection of the steel plate structure and the pre-buried sleeve through bolts. Further preferably, the steel plate structure can be correspondingly welded at the position where the pre-buried sleeve protrudes from the concrete structure, so as to arrange a shock-absorbing pad between the two steel plate structures to realize the shock-absorbing purpose. In addition, the number of steel plates can also be increased to realize the fine adjustment of the position.

[0059] Further, the structure form in which the support 3 is arranged on both sides of the beam body in the present application can meet the actual operation requirements, which respectively includes the straight segment case and the curved segment case, and a preferred embodiment is taken as an example, in which the height of the track beam is 2.3 m, the width is 0.69 m, the length of the beam body unit 1 is 3 m, the support 3 is arranged along the longitudinal direction with an interval of 3 m, the curve radius is 120 m, the ring width of the segment is 1 m, the vehicle has 8 carriages, a single carriage carries 230 people, and the speed is 60 km / h when passing the curve:

[0060] In the straight segment case: the track beam is mainly subjected to the upper train and passenger load, train swing load, braking load and wind load when the train runs, at this time, for the track beam, the track beam transverse force can be considered to be in a balanced state, and therefore the support can be considered to be not subjected to force in the transverse direction.

[0061] In the curved segment case: the track beam is subjected to the upper train and passenger load, centrifugal load when the train runs, train swing load, braking load and wind load; the transverse force borne by the single beam body unit 1 is as follows:

[0062] (1) Track beam self weight

[0063] The size of the track beam is considered as 0.68 m*2.3 m (width*height), and since the super height needs to be set in the curved segment, the calculation is performed according to 9% super height, and the transverse load F transferred and supported by each track beam is 1横 = 7.63 kN;

[0064] (2) Upper train and passenger load

[0065] The vertical load borne by the track beam is transmitted to the segment structure through the lower support, and the calculation is performed according to 9% super height, and the transverse load borne by the track beam is F 2横 = 12.43 kN;

[0066] (3) Centrifugal load when the train is fully loaded

[0067] According to 8 carriages, each carriage is calculated according to 230 overload persons, and the transverse load borne by the track beam is F 3横 = 11.63 kN;

[0068] (4) Train sway load

[0069] According to relevant research, the lateral load on the track beam when the train is swaying is F 4横 = 5.22 kN;

[0070] (5) Braking load

[0071] According to relevant research, the lateral load on the track beam when the train is braking is F 5横 = 1.125 kN;

[0072] (6) Wind load

[0073] According to relevant research, the lateral load on the track beam when the train is braking is F 6横 = 4.69 kN;

[0074] Then the total lateral force F 横 = F 1横 + F 2横 + F 3横 + F 4横 + F 5横 + F 6横 = 42.725 kN, the support 3 is a reinforced concrete structure, the concrete uses C50 concrete, the cross-sectional size is 0.325 m*0.325 m, and the reinforcement specification is When the train is running on a curve, one side support is in compression and the other side support is in tension. The support is projected to the horizontal direction and calculated according to the axial compression and tension.

[0075] Compression side support: according to article 6.2.15 of the Code for Design of Concrete Structures (GB50010-2010), the support can provide resistance in the horizontal direction: F 横抗压 = 0.9*1*(23.1*1000000*0.325*0.325+360*1964) = 2832.28 kN >> F 横 .

[0076] Tension side support: according to article 6.2.22 of the Code for Design of Concrete Structures (GB50010-2010), the support can provide resistance in the horizontal direction: F 横抗拉 = 360*1964 = 707.04 kN >> F 横 .

[0077] From the above calculation, it can be seen that the support 3 can provide much larger lateral force than the track beam.

[0078] In example 1, as Figure 2As shown, a hollow cavity can be formed inside the beam unit 1 to further reduce the weight of the beam unit 1. Further explanation is provided: the beam unit 1 with the hollow cavity can be formed by setting a box structure in a mold and casting, and the beam unit 1 with the hollow cavity is applied to the straight section in the track structure.

[0079] In Example 2, as Figure 3 As shown, the connection point between the support member 3 and the tunnel floor slab 2 is the same in the height direction as the connection point between the support member 3 and the beam unit 1, making the support member 3 and the beam unit 1 perpendicular to each other, with an included angle of 90°. This arrangement ensures that when the train curves, the force on one side of the support member 3 is approximately axial compression, while the force on the other side is approximately axial tension. This improves the stress distribution on the support member 3 and reduces its maintenance costs.

[0080] Furthermore, a positioning part and a second connecting part 6 are provided between two adjacent beam units 1 to realize the positioning and / or connection of the two adjacent beam units 1, wherein:

[0081] The positioning part includes a protruding structure and a recessed structure respectively disposed on the adjacent end faces of the beam unit 1. The two are arranged correspondingly. During the assembly process, the protruding structure and the recessed structure match and connect with each other to achieve the positioning of the two adjacent beam units 1. Preferably, the recessed structure is a through groove that runs through its upper and lower end faces. The through groove is arranged vertically, so that when the next beam unit 1 is installed, the protruding structure can move vertically in the through groove, thereby achieving the lateral positioning of the beam unit 1.

[0082] The second connecting part 6 includes four connecting plates disposed on both sides of two adjacent beam units 1 and bolts connecting the two adjacent connecting plates. The connecting plates are disposed near the ends of the beam units 1, and multiple through holes are provided on the connecting plates, which are arranged at intervals along the vertical direction, for the bolts to pass through to connect the two connecting plates, thereby connecting the two adjacent beam units 1. More preferably, the adjacent end faces of each connecting plate are flush with the end faces of the beam units 1 to which they are fixed.

[0083] Further, a grating plate 4 can be arranged on the support 3, and the grating plate 4 is fixedly connected with the support 3, so as to provide a walking surface for workers. The grating plate 4 is provided with a manhole penetrating through the upper and lower end surfaces thereof, so as to provide a passage for workers to pass through, and to facilitate the maintenance of the track structure under the grating plate 4. Further preferably, when the connecting position of the support 3 and the tunnel bottom plate 2 is lower than the connecting position of the support 3 and the beam unit 1 in the height direction (i.e. the included angle between the support 3 and the beam unit 1 on the side close to the tunnel bottom plate 2 is less than 90°), a support is arranged on the side of the bottom of the grating plate 4 away from the beam unit 1, so that the surface of the grating plate 4 is parallel to the horizontal plane, and workers can walk stably. When the support 3 and the beam unit 1 are perpendicular to each other, the grating plate 4 can be directly arranged on the support 3. In addition, the grating plate 4 can also be fixedly connected with the tunnel bottom plate 2 and the beam unit 1, so as to ensure the stability of the grating plate 4.

[0084] Further, the track structure further comprises a water ditch arranged on the tunnel bottom plate 2, which is obtained by pouring concrete on the tunnel bottom plate 2. Further preferably, the concrete is filled into the gap between the beam unit 1 and the tunnel bottom plate 2 (i.e. the gap between the steel plate and the tunnel bottom plate 2), so as to compact the gap between the two.

[0085] Further, the gap between the support 3 and the tunnel bottom plate 2 is compacted by a filling material. Further preferably, the filling material is a rubber material with damping function, which is arranged between the steel plate and the tunnel bottom plate 2.

[0086] Further, a filling material is arranged between the two adjacent beam units 1, so as to compact the gap between the two. Preferably, the filling material is a rubber material with durability.

[0087] Further, the present application further provides a construction method of the assembled track structure with supports and a construction method of the construction method.

[0088] S1, determining the track structure according to the line design parameters and the tunnel parameters, and then obtaining the size of the beam unit 1 and the size of the support 3, selecting the arrangement form of the support 3 (i.e. the positional relationship between the support 3 and the beam unit 1), and completing the connection between the support 3 and the steel plate structure arranged at the two ends thereof;

[0089] S2, performing tunnel bottom plate 2 construction, pre-burying bolt sleeves on the tunnel bottom plate 2, or assembling segments pre-buried with bolt sleeves to form the required tunnel bottom plate 2;

[0090] S3, installing the beam unit 1 and the support 3, including the following specific steps:

[0091] S31, arranging the steel plate structure at the position corresponding to the pre-buried bolt sleeve, and placing the shock isolation pad;

[0092] S32, place the beam body unit 1 on the shock insulation pad, and tighten the bolt to realize the fastening connection between the beam body unit 1 and the tunnel bottom plate 2;

[0093] S33, the next beam body unit 1 is installed, and positioning is performed through the positioning part;

[0094] S34, the bolt of the second connecting part 6 is tightened to realize the connection between the beam body units 1;

[0095] S35, the support 3 is installed, the through hole of the steel plate on the support 3 is aligned with the bolt structure arranged on the beam body unit 1 and the tunnel bottom plate 2, the shock insulation pad is arranged between the support 3 and the beam body unit 1 and the tunnel bottom plate 2 respectively, the bolts of the third connecting part 7 and the fourth connecting part 8 are tightened respectively, and the installation of the support 3 is completed;

[0096] S36, the filling material is poured between the beam body units 1 and between the support 3 and the tunnel bottom plate 2;

[0097] S4, the grid plate 4 is installed, the grid plate 4 is welded with the steel structure in the support 3, and according to the actual situation, the grid plate 4 can also be welded with the steel bar structure in the tunnel bottom plate 2 and the beam body unit 1;

[0098] S5, whether the structure in the track structure is stably connected is checked, and the bolt is tightened again;

[0099] S6, the plain concrete is poured, and the water ditch is constructed.

[0100] The assembled track structure with supports of the straddle-type monorail and the construction method thereof, which comprises a plurality of beam body units arranged in sequence along the longitudinal direction, the track beam structure is formed by sequentially assembling the beam body units, at least one support 3 is arranged on the two sides of the beam body unit respectively to ensure the structural stability of the beam body unit, the fastening connection between the beam body unit and the tunnel bottom plate 2, between the beam body units, between the beam body unit and the support 3 and between the support 3 and the tunnel bottom plate 2 is realized through the connecting part, and the shock insulation pad is further arranged in the connecting part to improve the anti-seismic toughness of the overall structure of the track beam; and the grid plate 4 with the manhole is further arranged on the support 3 on the two sides of the beam body unit, which is convenient for personnel to pass through and maintain the track structure through the manhole. The assembled track structure with supports of the straddle-type monorail and the construction method thereof can greatly improve the construction efficiency while ensuring the structural stability, and can have the functions of anti-seismic, maintenance and drainage, and can produce good economic value and social benefits.

[0101] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A straddle-type monorail belt-supported assembled track structure provided on a tunnel floor, characterized by, It includes multiple beam units arranged sequentially along the longitudinal direction, and a first connecting part is provided between the beam unit and the tunnel floor slab to realize the connection between the beam unit and the tunnel floor slab; The first connecting part includes a steel plate disposed at the bottom of the beam unit and a bolt structure disposed on the tunnel floor. The steel plate has through holes corresponding to the bolt structure. The connection between the beam unit and the tunnel floor is realized by the fastening connection between the bolt structure and the steel plate. The first connecting part is further provided with a steel plate between the steel plate and the tunnel floor for height adjustment; a vibration isolation pad is also provided between the two steel plates for vibration reduction during vehicle operation. At least one support member is provided on each of the two transverse sides of the beam unit. One end of the support member is fixedly installed on the side wall of the beam unit, and the other end is fixedly connected to the tunnel floor. A third connection is provided between the support member and the beam unit, and a fourth connection is provided between the support member and the tunnel floor slab; The third connecting part includes a pre-embedded sleeve embedded in the beam unit and a steel plate structure fixedly connected to the support member. The steel plate structure has bolt holes for fixed connection with the beam unit by bolts, thereby realizing the connection between the support member and the beam unit. The fourth connection part includes a bolt structure pre-embedded in the tunnel floor slab and a steel structure fixedly installed on the end face of the support member. The two are connected by bolts to achieve a fixed connection between the support member and the tunnel floor slab.

2. The straddle-type monorail supported fabricated track structure according to claim 1, wherein, The connection point between the support member and the tunnel floor slab is not higher in the height direction than the connection point between the support member and the beam unit.

3. The straddle-type monorail supported fabricated track structure according to claim 2, wherein, The support component is one of the following: a steel profile component, a reinforced concrete component, or a steel cylinder component.

4. The straddle-type monorail with support prefabricated track structure according to any one of claims 1 to 3, wherein, The beam unit has a cavity inside to reduce its weight.

5. The straddle-type monorail with support prefabricated track structure according to any one of claims 1 to 3, wherein, Vibration isolation pads are provided between the beam unit and the support member, between the beam unit and the tunnel floor slab, and between the support member and the tunnel floor slab.

6. The straddle-type monorail with support prefabricated track structure according to any one of claims 1 to 3, wherein, A positioning part and / or a second connecting part are provided between two adjacent beam units to realize the positioning and / or connection of the two adjacent beam units.

7. The straddle-type monorail with support prefabricated track structure according to claim 6, wherein, The beam unit is provided with grid plates on both sides, the grid plates are erected on the top of the support and are fixedly connected to the support.

8. A construction method for a straddle-type monorail with support prefabricated track structure, characterized in that, The prefabricated track structure with support for straddle-type monorail as described in claim 7 includes the following steps: S1. Determine the track structure based on the line design parameters and tunnel parameters, and then obtain the beam unit dimensions and support component dimensions, and select the support component setting form; S2. Carry out tunnel floor slab construction, pre-embed bolt sleeves in the tunnel floor slab, or assemble the segments with pre-embedded bolt sleeves to form the required tunnel floor slab. S3. Install beam units and supporting components; S4. Install the grating panels; S5. Check whether the structural components in the track structure are securely connected and tighten the bolts. S6. Pour plain concrete and construct drainage ditches.

9. The construction method of the straddle-type monorail with support prefabricated track structure according to claim 8, wherein, Step S3 includes the following specific steps: S31. A steel plate structure is installed at the location where the bolt sleeve is pre-embedded, and a vibration isolation pad is placed there. S32. Place the beam unit on the vibration isolation pad and tighten the bolts to achieve a tight connection between the beam unit and the tunnel floor. S33. Install the next beam unit and position it using the positioning part; S34. Tighten the bolts of the second connection part to achieve the connection between the beam units; S35. Install the support components, align the through holes of the steel plates on the support components with the bolt structures set on the beam unit and the tunnel floor, and set vibration isolation pads between the support components and the beam unit and the tunnel floor respectively. Tighten the bolts of the third connection and the fourth connection respectively to complete the installation of the support components. S36. Filling material is poured between each beam unit and between the support and the tunnel floor.

Images