Rail with adjustable vertical linear of track beam and construction method thereof

Abstract

The application discloses a track with adjustable vertical linear rail beam and a construction method thereof. The track comprises two parallel steel beams, and the top of the steel beam is provided with an adjustable low beam. The adjustable low beam is a vertically adjustable beam. The opposite side walls of the adjustable low beam are guide walls, and the guide walls are in contact with guide wheels of a cloud bus rubber-tyred tramcar. The construction method comprises the following steps: processing the steel beam; marking the threaded steel bolt; welding the threaded sleeve; welding the top steel plate and the threaded steel bolt; adjusting the position of the steel beam; welding the steel beam and the threaded steel bolt; hoisting; linear adjustment of the two-way steel mesh construction; installation and reinforcement of the outer side formwork; installation and reinforcement of the inner side formwork; and installation and reinforcement of the inner side formwork. The application can adjust the vertical linear rail beam body, reduces the difficulty of linear rail beam body adjustment before operation, is convenient to construct, has low cost, increases the overall rigidity of the rail beam, and improves the train driving comfort.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of civil engineering bridges, and particularly relates to a track capable of adjusting vertical linear of track beam and a construction method thereof. BACKGROUND

[0002] Cloud bus rubber-tired tram, referred to as cloud bus, is a new track transportation mode emerging with the development of new technology, mainly elevated, and is a new small-capacity track transportation system with independent road right based on the miniaturization research of traditional rubber-tired track system.

[0003] The vehicle adopts rubber tires to realize driving and guiding, and is mainly used for short-distance public transportation, with a design maximum speed of 60-80 km / h and a maximum train length of 75 m. The cloud bus has low construction cost, with a cost of less than 2 billion yuan per kilometer, which is one fourth to one third of the cost of subway per kilometer. In addition, the cloud bus has the advantage of short construction period, and can be widely applied to main traffic lines of large and medium-sized cities and super-large city traffic encryption lines to provide residents with more intelligent, comfortable and convenient travel experience, and help to solve the problem of urban traffic congestion and improve the efficiency of urban traffic.

[0004] The cloud bus project mainly adopts continuous steel track beam. Since the bridge deck is the track surface, the processing and manufacturing level of the steel beam and the on-site steel beam erection scheme will cause the track beam linear of the completed bridge to deviate from the design, thereby affecting the vehicle operation. After the track beam erection of the cloud bus projects such as Shenzhen Pingshan cloud bus, Chongqing Bishan cloud bus, Xi'an cloud bus and Tianjin Xiqing cloud bus in China is completed, the thickness of the adjustment pad stone and the number of bearing pads are adjusted to preliminarily adjust the linear of the beam body, but there is still a problem of large deviation of the vertical linear of the beam body from the design value.

[0005] In addition to setting the pre-camber, the beam body linear control in the fields of railway and highway transportation has mature measures for secondary adjustment of the beam body linear. The railway bridge mainly realizes the track surface elevation control by adjusting the thickness of the ballast or track slab. The main methods for secondary adjustment of the linear of the beam body of the highway bridge include: direct overlay method, composite beam method, integral jacking method and combination of overlay and integral jacking method. The cross-over monorail track beam mainly adopts the methods of increasing or decreasing the adjustment pad, adjusting the position of the wedge-shaped block and moving the beam piece by the crane in the horizontal and vertical directions.

[0006] In the current domestic cloud bus projects, the running surface is mainly increased with an epoxy thin layer to adjust the linear of the track beam. SUMMARY

[0007] The present application is proposed to solve the problems in the prior art, and aims to provide a track capable of adjusting the vertical linear of the track beam and a construction method thereof.

[0008] The technical scheme of the present application is: a track with adjustable vertical linear track beam, comprising two parallel steel beams, the top of the steel beam is provided with an adjustable low beam, the adjustable low beam is a vertically adjustable beam, the opposite side walls of the adjustable low beam are guide walls, and the guide walls are in contact with the guide wheels of the cloud rubber wheel tram.

[0009] Furthermore, the top of the adjustable low beam is provided with a top steel plate, the top steel plate is a walking support, and the top steel plate supports the running wheels of the cloud rubber wheel tram.

[0010] Furthermore, the distance between the two steel beams is not less than the outer contour line between the two guide wheels.

[0011] Furthermore, the adjustable low beam is a reinforced concrete low beam, and a vertical steel support structure is arranged in the adjustable low beam.

[0012] Furthermore, the steel support structure comprises a threaded steel stud arranged at the lower end of the top steel plate, a threaded sleeve is arranged in the adjustable low beam, and the threaded steel stud is connected with the threaded sleeve, so as to adjust the linear shape of the top steel plate in the track direction.

[0013] Furthermore, a lower threaded steel stud is arranged at the top end of the steel beam, the lower threaded steel stud is connected with the threaded sleeve, so as to realize the linear adjustment of the top steel plate compared with the top of the steel beam.

[0014] Furthermore, an internal reinforcing upper bidirectional steel mesh is further arranged in the adjustable low beam.

[0015] Furthermore, the bidirectional steel mesh is arranged in the concrete of the adjustable low beam, and the bidirectional steel mesh is arranged in multiple layers in the longitudinal and transverse directions.

[0016] Furthermore, a reinforcing structure is further arranged between the steel beam and the top steel plate to reinforce the inner and outer sides of the adjustable low beam.

[0017] A construction method of a track with adjustable vertical linear track beam, comprising the following steps:

[0018] A. Process steel beam

[0019] The steel beam section is prefabricated in a steel plant, transported to the construction site, and welded into one body. The steel beam top plate is polished and rusted, and the surface dust and debris are cleaned after polishing;

[0020] B. Mark the threaded steel stud

[0021] Mark the position of the threaded steel stud on the steel beam top plate;

[0022] C. Weld the threaded sleeve

[0023] The threaded sleeve is connected with the upper and lower threaded steel studs;

[0024] D. Welding the top steel plate with the threaded steel stud

[0025] The threaded steel stud with the threaded sleeve is welded on the top steel plate, and a stud welding machine can be used for welding;

[0026] E. Adjusting the position of the steel beam

[0027] The top steel plate with the threaded steel stud and the threaded sleeve is aligned with the top steel plate of the steel beam;

[0028] F. Welding the steel beam and the threaded steel stud

[0029] After adjusting the threaded sleeve so that the lower threaded steel stud is in full contact with the top plate of the steel beam, the bottom threaded stud is welded;

[0030] G. Hoisting

[0031] The track beam is hoisted as a whole;

[0032] H. Linear adjustment

[0033] According to the control line, the longitudinal and transverse linear adjustment of the deformed panel is carried out, and after the adjustment is completed, the plane linear and line longitudinal slope are re-measured by using precision instruments;

[0034] I. Construction of two-way steel mesh

[0035] The two-way steel mesh is installed and constructed, and the steel bar installation process avoids the threaded steel stud as much as possible, and the installation spacing should be controlled according to the requirements;

[0036] J. Installation and reinforcement of the outer formwork

[0037] The outer formwork is installed and reinforced, and the tightening screw is used for adjustment during reinforcement;

[0038] K. Installation and reinforcement of the inner formwork

[0039] The inner formwork is installed and reinforced, and the tightening screw is used for adjustment during reinforcement, and the guide surface linear adjustment is also adjusted by using the upper and lower control screws;

[0040] L. Installation and reinforcement of the inner formwork

[0041] The outer formwork top is reserved with a super-strong concrete pouring hole, and pouring is carried out, and the deformed panel surface is knocked by using a rubber hammer during pouring to ensure that the bottom of the steel plate is dense with cementitious materials without gaps.

[0042] The beneficial effects of the present application are as follows:

[0043] The present application can adjust the vertical linear shape of the track beam body, reduces the difficulty of track beam body linear shape adjustment before operation, is more convenient for construction, has lower cost, increases the overall stiffness of the track beam, and improves the train driving comfort. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 is the relative relationship diagram of the present application and the Yunba bogie;

[0045] Figure 2 is the overall structure schematic diagram of the present application;

[0046] Figure 3 is the assembly drawing of the outer side formwork reinforcing assembly in the present application;

[0047] Figure 4 is the assembly drawing of the inner side formwork reinforcing assembly in the present application;

[0048] Among them:

[0049] 1 running wheel 2 guide wheel

[0050] 3 adjustable low beam 4 steel beam

[0051] 5 top steel plate 6 high-performance concrete

[0052] 7 threaded steel stud 8 threaded sleeve

[0053] 9 two-way steel mesh 10 outer side reinforcing U-shaped frame

[0054] 11 outer side formwork 12 inner side reinforcing U-shaped frame

[0055] 13 inner side formwork. DETAILED DESCRIPTION

[0056] Hereinafter, the present application will be described in detail with reference to the accompanying drawings and examples:

[0057] As Figures 1-4 shown, a track with adjustable vertical linear shape of track beam, comprising two parallel steel beams 4, the top of the steel beam 4 is provided with an adjustable low beam 3, the adjustable low beam 3 is a vertical adjustable beam, the opposite side walls of the adjustable low beam 3 are guide walls, the guide walls are in contact with the guide wheels 2 of the Yunba rubber-tyred tramcar.

[0058] The top of the adjustable low beam 3 is provided with a top steel plate 5, the top steel plate 5 is a running support, and the top steel plate 5 supports the running wheels 1 of the Yunba rubber-tyred tramcar.

[0059] The distance between the two steel beams 4 is not less than the outer contour line between the two guide wheels 2.

[0060] The adjustable low beam 3 is a reinforced concrete low beam, and a vertical steel support structure is arranged in the adjustable low beam 3.

[0061] The steel support structure comprises a threaded steel stud 7 arranged at the lower end of the top steel plate 5, a threaded sleeve 8 arranged in the adjustable low beam 3, and the threaded steel stud 7 is connected with the threaded sleeve 8, so as to adjust the vertical line shape of the top steel plate 5 along the line direction.

[0062] A lower threaded steel stud is correspondingly arranged at the top end of the steel beam 4, and the lower threaded steel stud is fixed with the threaded sleeve 8, so as to realize the line shape adjustment of the top steel plate 5 compared with the top of the steel beam 4.

[0063] The adjustable low beam 3 further comprises a bidirectional steel mesh 9 for internal reinforcement.

[0064] The bidirectional steel mesh 9 is arranged in the concrete of the adjustable low beam 3, and the bidirectional steel mesh 9 is arranged in multiple layers in the longitudinal direction and the transverse direction.

[0065] The steel beam 4 and the top steel plate 5 further comprise a reinforcing structure for reinforcing the inner and outer sides of the adjustable low beam 3.

[0066] The reinforcing structure comprises an outer side reinforcing assembly for reinforcing the outer side of the adjustable low beam 3 and an inner side reinforcing assembly for reinforcing the inner side.

[0067] The outer side reinforcing assembly comprises an outer side reinforcing U-shaped frame 10 fixed with the steel beam 4 and the top steel plate 5, and an outer side formwork 11 capable of being extended to abut against the top plate of the steel beam 4, the top steel plate 5 and the side wall of the concrete low beam is arranged in the outer side reinforcing U-shaped frame 10.

[0068] An adjusting long screw is arranged at the back of the outer side formwork 11, a through hole is formed in the outer side reinforcing U-shaped frame 10, a lock nut is arranged on the adjusting long screw, and the lock nut can realize the fixation of the outer side reinforcing U-shaped frame 10 and the long screw, so as to realize the fixation of the outer side formwork 11.

[0069] Specifically, a through hole is formed in the two free ends of the outer side reinforcing U-shaped frame 10, a screw hole corresponding to the through hole is formed in the steel beam 4 and the top steel plate 5, and a bolt is screwed into the screw hole through the through hole, so as to realize the locking fixation of the outer side reinforcing U-shaped frame 10.

[0070] In the case that the through hole position in the outer side reinforcing U-shaped frame 10 and the length of the free end are known, the position of the outer side formwork 11 can be determined by adjusting the length of the long screw, so as to adjust the outer side line shape.

[0071] The inner side reinforcing assembly comprises an inner side reinforcing U-shaped frame 12 fixed with the top plate of the steel beam 4 and the top steel plate 5, and a 300*50*5mm steel plate is arranged in the inner side reinforcing U-shaped frame 12 as a back ridge, and a formwork 13 is arranged between the back ridge and the concrete short beam.

[0072] The inner side formwork 13 is provided with an adjusting long screw rod, a through hole is formed in the inner side reinforcing U-shaped frame 12, a lock nut is arranged on the adjusting long screw rod, the lock nut can realize the fixing of the inner side reinforcing U-shaped frame 12 and the long screw rod, so as to realize the fixing of the inner side formwork 13.

[0073] Specifically, a through hole is formed in the two free ends of the inner side reinforcing U-shaped frame 12, a screw hole corresponding to the through hole is formed in the steel beam 4 and the top steel plate 5, and a bolt is screwed into the screw hole through the through hole, so as to realize the locking and fixing of the inner side reinforcing U-shaped frame 12.

[0074] In the case that the through hole position in the inner side reinforcing U-shaped frame 12 and the length of the free end are known, the position of the inner side formwork 13 can be determined by adjusting the length of the long screw rod, so as to adjust the linear shape of the inner side.

[0075] Different from the outer side, the inner side formwork 13 is adjusted between the steel beam 4 and the top steel plate 5, instead of being adjusted in the inner side reinforcing U-shaped frame 12.

[0076] The adjustable short beam 3 further comprises the cast high-performance concrete 6, and the adjustable short beam 3 provides effective track support for the operation of the tramcar after the linear shape of the top and both sides is adjusted.

[0077] A construction method of a track with adjustable vertical linear track beams, comprising the following steps:

[0078] A. The steel beam 4 segment is prefabricated and processed in a steel plant, and after being transported to the construction site, it is welded into one body. The top plate of the steel beam 4 is polished and rusted, and after polishing, the surface dust and sundries are cleaned.

[0079] B. Mark the position of the threaded steel stud 7 at the top plate of the steel beam 4, and arrange the interval as follows: the longitudinal interval is 12.5cm, and the transverse interval is 5cm;

[0080] C. Connect the threaded sleeve 8 with the upper and lower threaded steel studs 7 together;

[0081] D. Weld the threaded steel stud 7 with the threaded sleeve 8 on the top steel plate 5, which can be welded by using a fusion stud welding machine;

[0082] E. Align the top steel plate 5 with the threaded steel stud 7 and the threaded sleeve 8 with the top plate of the steel beam 4;

[0083] F. Adjust the threaded sleeve 8, so that the lower threaded steel peg 7 is in full contact with the top plate of the steel beam 4, then weld the bottom threaded pegs;

[0084] G. Hoist the track beam as a whole;

[0085] H. Adjust the longitudinal and transverse linear shape of the deformed panel according to the control line, and after the adjustment is completed, use precision instruments to re-measure the plane linear shape and the line longitudinal slope;

[0086] I. Install the two-way steel mesh 9, and try to avoid the threaded steel peg 7 during the installation process, and the installation spacing should be controlled according to the requirements;

[0087] J. Install and reinforce the outer formwork: the outer formwork uses 3mm thick steel plate 11, the formwork reinforcement uses U-shaped frame 10, the U-shaped frame is made of 25x25x3mm square steel, the longitudinal spacing of the U-shaped frame 10 is 200mm, the upper and lower parts are buckled on the upper and lower steel plates by bolts, the back of the formwork uses 300x50x5mm steel plate as a back ridge, the spacing of the back ridge is 200mm, the back of the back ridge is welded with the bolt, the bolt U-shaped square steel is inserted, and the tightening adjustment is used during reinforcement;

[0088] K. Install and reinforce the inner formwork: the inner formwork uses 3mm thick steel plate 13, the formwork reinforcement U-shaped frame 12, the U-shaped frame is made of 25x25x3mm square steel, the longitudinal spacing of the U-shaped frame is 200mm, the upper and lower parts are buckled on the upper and lower steel plates by bolts, the back of the formwork uses 300x50x5mm steel plate as a back ridge, the spacing of the back ridge is 200mm, the back of the back ridge is welded with the bolt, the bolt U-shaped square steel is inserted, and the tightening adjustment is used during reinforcement, and the guide surface linear adjustment is also adjusted by the upper and lower control bolts;

[0089] L. The outer formwork top is reserved for pouring the super-strong concrete orifice, the orifice is made into a chute, the top surface of the orifice is 100mm higher than the deformed surface, the inclined angle of the inclined orifice is 45°, which is convenient for concrete unloading, the longitudinal arrangement spacing of the unloading port is 1m, and the 35mm plug-in type vibrating rod can be inserted for vibration. During pouring, the deformed surface steel plate surface is knocked by a rubber hammer to ensure that the bottom of the steel plate is dense with cementitious materials and has no gap.

[0090] Example one

[0091] The present application increases the adjustable low beam 3 of the reinforced concrete structure which can adjust the vertical linear shape of the track beam on the top of the steel beam, the height of the adjustable low beam 3 is 0.3m, the width is 0.25m, and high-performance concrete and HRB400 steel are used. After increasing the reinforced concrete low beam, a steel-concrete composite beam is formed, a 20mm thick patterned steel plate is provided on the concrete surface to provide a running surface and a guide surface again, that is, the top steel plate 5 of the 20mm thick patterned steel plate is used as the running surface, and the inner side wall of the adjustable low beam 3 is used as the guide surface.

[0092] Weld M20 bolts on the top steel plate 5, and connect the lower threaded steel studs with threaded sleeves 8 to adjust the longitudinal and transverse line shape of the track beam running surface, i.e. the top steel plate 5.

[0093] The studs are Φ20 studs and threaded studs, with a length of 20 cm, and are welded by a fusion welding stud machine.

[0094] Preferably, the arrangement spacing is: longitudinal spacing 12.5 cm, transverse spacing 5 cm, and the single row of upper and lower studs are staggered and welded with the upper and lower steel plates.

[0095] Every 40 cm or so, the side threaded studs are connected by threaded sleeves to adjust the longitudinal and transverse elevation line shape of the running surface.

[0096] After the adjustment is completed, the formwork is installed, and high-performance concrete is poured from the formwork reserved orifice.

[0097] The outer formwork 11 is made of 3 mm thick steel plates, the outer reinforcing U-shaped frame 10 is made of 25x25x3 mm square steel, and the outer reinforcing U-shaped frame 10 has a longitudinal spacing of 200 mm, and the upper and lower parts are buckled by bolts between the steel beam 4 and the top steel plate 5.

[0098] Preferably, the back of the outer formwork 11 is provided with 300x50x5 mm steel plates as back strakes, the back strake spacing is 200 mm, the back of the back strake is welded and connected with a long screw rod, the long screw rod penetrates from the outer reinforcing U-shaped frame 10, and the tightening nut is used for adjustment during reinforcement.

[0099] Preferably, the inner formwork 13 is made of 3 mm thick steel plates, the inner reinforcing U-shaped frame 12 is made of 25x25x3 mm square steel, the inner reinforcing U-shaped frame 12 has a longitudinal spacing of 200 mm, and the upper and lower parts of the inner reinforcing U-shaped frame 12 are buckled by bolts between the steel beam 4 and the top steel plate 5.

[0100] The back of the inner formwork 13 is provided with 300x50x5 mm steel plates as back strakes, the back strake spacing is 200 mm, the back of the back strake is welded and connected with a long screw rod, the long screw rod penetrates from the inner reinforcing U-shaped frame 12, and the tightening nut is used for adjustment during reinforcement, and the guide surface line shape adjustment is also adjusted by upper and lower control bolts.

[0101] After construction, process test verification is completed, and the specific verification data is as follows:

[0102] (1) The actual measured running surface flatness error of the test section is 1 mm and 2 mm, which meets the specification requirement of 3 mm range and meets the requirement;

[0103] (2) The actual measured guide surface flatness error of the test section is 2 mm and 1 mm, which meets the specification requirement of 3 mm range and meets the requirement;

[0104] (3) After the concrete is removed, the surface of the concrete is free of honeycomb and uneven surface, and the concrete is not dense.

[0105] Compared with the prior art scheme, that is, the running surface is increased with anticorrosion and antiskid pavement, it can be seen that the shortcomings of the prior art scheme are more prominent, and the specific reasons are as follows:

[0106] (1) When the vertical linear adjustment value is less than 7 mm, the pavement layer is easy to warp under the action of train rolling, so the minimum value of the pavement layer thickness should not be less than 7 mm;

[0107] (2) There is a lack of large-scale application examples of epoxy coating materials on the running surface of the steel track beam, and the material performance has not been verified;

[0108] (3) The service life of the epoxy coating material is 10-15 years, and the maintenance and repair in the later period are relatively difficult.

[0109] Compared with the prior art, the present application has outstanding technical advantages in construction difficulty, construction economy, quality guarantee and subsequent maintenance.

[0110] The present application can adjust the vertical linear shape of the track beam body, reduce the difficulty of track beam body linear adjustment before operation, is convenient to construct, has low cost, increases the overall stiffness of the track beam, and improves the train running comfort.

Claims

1. A track with adjustable vertical alignment of the track beams, comprising two parallel steel beams (4), characterized in that: The top of the steel beam (4) is provided with an adjustable low beam (3), which is a vertically adjustable beam. The opposing side walls of the adjustable low beam (3) are guide walls, which are in contact with the guide wheels (2) of the Yunba rubber-tired tram. The adjustable low beam (3) is provided with a top steel plate (5), which serves as a walking support and supports the running wheels (1) of the Yunba rubber-tired tram. The adjustable low beam (3) is a reinforced concrete low beam, and the adjustable low beam (3) is provided with a vertical steel support structure; The steel support structure includes a threaded steel stud (7) provided at the lower end of the top steel plate (5), and a threaded sleeve (8) provided in the adjustable low beam (3). The threaded steel stud (7) is connected to the threaded sleeve (8) to adjust the alignment of the top steel plate (5) in the line direction. The steel beam (4) and the top steel plate (5) are also provided with a reinforcement structure to reinforce the inner and outer sides of the adjustable low beam (3); The reinforcement structure includes an outer reinforcement component for reinforcing the outer side of the adjustable low beam (3) and an inner reinforcement component for reinforcing the inner side; The outer reinforcement component and the inner reinforcement component respectively include an outer reinforcement U-shaped frame (10) and an inner reinforcement U-shaped frame (12) fixed to the steel beam (4) and the top steel plate (5). The outer reinforcement U-shaped frame (10) is provided with an outer template (11) that can telescopically support the top plate of the steel beam (4), the top steel plate (5) and the side wall of the concrete low beam. The inner reinforcement U-shaped frame (12) is provided with a 300×50×5mm steel plate as a back rib, and the space between the back rib and the concrete low beam is the inner template (13). An adjusting long screw is provided on the back of the outer template (11), and a through hole is formed in the outer reinforced U-shaped frame (10). A lock nut is provided on the adjusting long screw. The lock nut can fix the outer reinforced U-shaped frame (10) and the long screw, thereby fixing the outer template (11). An adjusting long screw is provided on the back of the inner template (13), and a through hole is formed in the inner reinforced U-shaped frame (12). A lock nut is provided on the adjusting long screw, and the lock nut can fix the inner reinforced U-shaped frame (12) and the long screw, thereby fixing the inner template (13). Through holes are formed in both free ends of the inner reinforced U-shaped frame and the outer reinforced U-shaped frame. Screw holes corresponding to the through holes are formed in the steel beam (4) and the top steel plate (5). Bolts are screwed into the screw holes through the through holes to lock and fix the inner reinforced U-shaped frame and the outer reinforced U-shaped frame. Unlike the outer side, the inner template (13) is adjusted between the steel beam (4) and the top steel plate (5), rather than in the inner reinforced U-shaped frame (12).

2. The track with adjustable vertical alignment of the track beam according to claim 1, characterized in that: The distance between the two steel beams (4) is not less than the outer contour line between the two guide wheels (2).

3. The track with adjustable vertical alignment of the track beam according to claim 1, characterized in that: The top of the steel beam (4) is provided with a lower threaded steel stud, which is fixed to the threaded sleeve (8) to achieve linear adjustment of the top steel plate (5) relative to the top of the steel beam (4).

4. The track with adjustable vertical alignment of the track beam according to claim 3, characterized in that: The adjustable low beam (3) is also provided with a two-way steel mesh (9) for internal reinforcement.

5. The track with adjustable vertical alignment of the track beam according to claim 4, characterized in that: The bidirectional steel mesh (9) is laid in the concrete of the adjustable low beam (3), and the bidirectional steel mesh (9) is laid in multiple layers in the longitudinal and transverse directions.

6. A construction method for a track employing the adjustable track beam vertical alignment as described in claim 5, characterized in that: Includes the following steps: (A) Processing steel beams The steel beam (4) segments are prefabricated at the steel plant, transported to the construction site, and welded together. The top plate of the steel beam (4) is ground to remove rust, and the surface dust and debris are cleaned after grinding. (B) Marking threaded steel studs Mark the position of the threaded steel stud (7) at the top plate of the steel beam (4); (C) Welded threaded sleeve Connect the threaded sleeve (8) to the upper and lower threaded steel studs (7); (D) Welding the top steel plate and threaded steel studs Threaded steel studs (7) with threaded sleeves (8) are welded onto the top steel plate (5). The welding can be done using a fusion welding stud machine. (E) Adjusting the position of the steel beam Align the top steel plate (5) with the threaded steel studs (7) and threaded sleeves (8) with the top steel plate of the steel beam (4); (F) Welded steel beams and threaded steel studs After adjusting the threaded sleeve (8) so that the lower threaded steel studs (7) are in full contact with the top plate of the steel beam (4), the bottom threaded studs are welded. (G) Lifting The track beam was hoisted as a whole. (H) Linear Adjustment Adjust the longitudinal and transverse alignment of the routing panel according to the control line. After the adjustment is completed, use precision instruments to re-measure the horizontal alignment and longitudinal slope of the line. (I) Construction of bidirectional steel mesh During the installation of the two-way steel mesh (9), the threaded steel studs (7) should be avoided as much as possible during the steel bar installation process, and the installation spacing should be controlled according to the requirements; (J) Reinforcement of outer formwork installation Reinforcement is achieved by using the outer template for installation, and bolts are tightened and adjusted during reinforcement. (K) Reinforcement of inner formwork installation The inner template is used for reinforcement. During reinforcement, bolts are tightened and adjusted. The guide surface alignment is also adjusted using upper and lower control bolts. (L) Reinforcement of inner template installation The top of the outer formwork is reserved with a high-strength concrete pouring hole for pouring. During the pouring process, the steel plate surface of the curved surface is tapped with a rubber hammer to ensure that the bottom of the steel plate is dense with the cementitious material without gaps.

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