Dragging and sliding system for steel-concrete combined section of bridge and construction method of dragging and sliding system

Abstract

The invention provides a dragging and sliding system for a steel-concrete combined section of a bridge and a construction method thereof.The dragging and sliding system comprises a bridge tower, supporting mechanisms arranged at the two land construction ends correspondingly, a steel beam sliding mechanism erected on the supporting mechanisms and a bridge floor body, and steel members are conveyed through the steel beam sliding mechanism; in the conveying process, the steel members and the concrete members are located on the same horizontal line, the contact faces of the steel members and the concrete members can be accurately in butt joint, then the connecting strength of the concrete members and the steel members is improved, the construction period is shortened, and the construction efficiency is improved; compared with a traditional assembly process of a crawler crane, a gantry crane and the like, the construction process of the bridge assembly is capable of effectively meeting the construction requirements of the bridge, and has the advantages of being low in construction cost, short in construction period, high in structural strength and convenient to popularize and implement.

Description

Technical Field

[0001] The present application belongs to the technical field of large-scale bridge construction, and specifically relates to a dragging and sliding system for a steel-concrete joint section of a bridge and a construction method thereof. Background Art

[0002] In the existing technology, the steel-concrete combined section of a bridge refers to the part of the bridge where steel components are combined with concrete structures. This structural form can give full play to the respective advantages of steel and concrete and improve the bearing capacity and durability of the bridge. The steel truss cable-stayed bridge is the most common bridge type for large-span dual-purpose highway and railway cable-stayed bridges. It is favored by the majority of engineers for its many advantages such as stable structural system, mature construction method, and non-interference between highway and railway layers. In recent years, a large number of large-span dual-purpose highway and railway cable-stayed bridges such as the Shanghai-Suzhou-Jiangyin Yangtze River Highway-Rail Bridge, the Wuhu Yangtze River Highway-Rail Bridge of the Shangqiu-Hefei-Hangzhou Railway, the Tongling Yangtze River Highway-Rail Bridge, and the Baiju Temple Yangtze River Bridge have been built and opened to traffic, creating good economic and social benefits.

[0003] In the prior art, in bridge construction, the assembly and jacking of large steel beams are widely used when crossing obstacles. However, due to the weight of steel components, transportation costs and assembly height, it is difficult to meet the construction requirements of bridges using traditional assembly processes such as crawler cranes and gantry cranes. During the construction process, it is difficult to accurately connect the contact surfaces of prefabricated concrete components and steel components, which reduces the connection strength between concrete components and steel components, increases the difficulty of combining concrete components and steel components, and prolongs the construction period. Therefore, improvements are urgently needed. Summary of the invention

[0004] In order to solve the technical problem in the prior art that, during the construction of a bridge with a large span, due to the weight, transportation cost and assembly height of the steel components, it is difficult to meet the construction requirements of the bridge by using traditional assembly processes such as crawler cranes and gantry cranes, and during the construction process, the components lifted by the crawler cranes and gantry cranes will shake greatly, the contact surface between the concrete components and the prefabricated steel components is difficult to accurately connect, the clearance between the concrete components and the steel components is large, the accuracy of the bridge body is reduced, and the connection strength between the concrete components and the steel components is reduced, a dragging and sliding system for the steel-concrete combined section of the bridge is proposed;

[0005] In order to solve the technical problem raised in the present application, the present application also provides a construction method of a towing and sliding system for a steel-concrete joint section of a bridge.

[0006] The present application adopts the following scheme, a dragging and sliding system for a steel-concrete joint section of a bridge, comprising:

[0007] bridge towers;

[0008] Support mechanisms are respectively arranged on the two land construction ends, and the bridge towers are arranged on the support mechanisms;

[0009] A steel beam sliding mechanism, which is mounted on the support mechanism and is used to transport the steel member X to the end of the support mechanism and connect the steel member X with the concrete member Y disposed on the support mechanism;

[0010] The bridge deck body includes a plurality of steel components X, both ends of which are respectively connected to the supporting mechanism so as to be erected in the target crossing area between the two land construction ends.

[0011] In one embodiment, the supporting mechanism includes a bridge pier pre-buried on the land construction end, a tower base arranged on the bridge pier, and a supporting pier group arranged on the side of the land construction end away from the bridge pier, and the bridge tower is matched and arranged in the tower base.

[0012] In one embodiment, the support pier group includes a first support pier pre-buried on the land construction end on a side away from the target crossing area, and a second support pier pre-buried on the land construction end on a side away from the first support pier, and the steel beam sliding mechanism is erected on the first support pier, the second support pier and the bridge pier at the same time.

[0013] In one embodiment, the support mechanism also includes a first support frame pre-buried between the bridge pier and the first support pier, and a second support frame arranged between the first support pier and the second support pier, and the steel beam sliding mechanism is simultaneously erected between the bridge pier, the first support frame, the first support pier, the second support frame and the second support pier.

[0014] In one of the embodiments, the support mechanism further includes a load-bearing platform pre-buried on the land construction end and connected to the tower base.

[0015] In one embodiment, the steel beam sliding mechanism includes a sliding seat simultaneously erected between the bridge pier, the first support frame, the first support pier, the second support frame and the second support pier, and a sliding member matched with the sliding seat, the concrete component Y is cast at one end of the sliding seat away from the target spanning area, and the steel component X is matched with the sliding member to move in a direction close to the concrete component Y, so that the steel component X is connected to the concrete component Y.

[0016] In one embodiment, a locking assembly is provided on the second supporting pier, and when the concrete component Y is disposed on the end of the sliding seat away from the target crossing area, the locking assembly abuts against the concrete component Y to limit the movement of the concrete component Y along the length direction of the sliding seat.

[0017] In one of the embodiments, after the steel member X is connected to the concrete member Y, it extends along the length direction of the sliding seat and close to the target spanning area to be erected above the target spanning area. The support mechanism also includes a cable with one end connected to the bridge tower and the other end connected to the steel member X and the concrete member Y. The cables are arranged at intervals along the length direction of the target spanning area.

[0018] In order to solve the technical problem raised by the present application, the present application also provides a construction method of a dragging and sliding system of a steel-concrete combined section of a bridge, comprising the following steps:

[0019] Step 101. Survey the geological data of the two land construction ends and the target crossing area, determine the expected mechanical data of the bridge body based on the geological data obtained from the survey, determine the predetermined construction coordinates at the two land construction ends based on the expected mechanical data of the bridge body, and pre-embed the bridge piers, the first supporting piers, the second supporting piers, the first supporting frames and the second supporting frames at the predetermined construction coordinates, and match and fix the tower bases on the bridge piers. After the tower bases are fixed, corresponding bridge towers are constructed on the tower bases;

[0020] Step 102. A locking assembly is arranged on the second supporting pier, and a concrete component Y is cast on the second supporting frame. During the casting process, the concrete component Y is abutted against the locking assembly. After the casting of the concrete component is completed, a steel beam sliding mechanism is matched and mounted on the bridge pier, the first supporting pier, the second supporting pier, the first supporting frame, and the second supporting frame;

[0021] Step 103: The steel member X is transported to the steel beam sliding mechanism by the floating device, and the steel member X is transported to the concrete member Y by the steel beam sliding mechanism, and the steel member X is connected to the concrete member Y until the steel member X extends to the bridge pier;

[0022] Step 104. Install the beam erection hanger on the steel member X extending to the bridge pier, then install the beam erection crane on the beam erection hanger, transport the steel member X to the bridge pier position by the beam erection crane, and connect multiple steel members X. During the connection process, adjust the shape of the bridge body according to the expected mechanical data of the bridge body determined in step 101, and set cables between the bridge tower and the steel member X. Repeat the steps of hoisting the steel member X and setting cables until the steel member X extends from the bridge towers on the two land construction ends to the top of the target span area and is connected, and then maintain and monitor it. After the maintenance and monitoring are completed, set a damper on the support mechanism and install a shock absorbing device on the cable.

[0023] In one of the embodiments, in step 103, during the process of the steel beam sliding mechanism conveying the steel component X, a three-way jack is arranged on the steel beam sliding mechanism. During the movement of the steel component X, the three-way jack adjusts the corresponding position of the steel component X according to the expected mechanical data of the bridge body determined in step 101, and pours concrete at the connection between the steel component X and the concrete component Y.

[0024] Compared with the prior art, this application has the following beneficial effects:

[0025] The present application provides a dragging and sliding system for a steel-concrete combined section of a bridge and a construction method thereof, wherein the dragging and sliding system includes a bridge tower, a supporting mechanism respectively arranged on two land construction ends, a steel beam sliding mechanism erected on the supporting mechanism and a bridge deck body, wherein steel components are transported by the steel beam sliding mechanism, and during the transportation process, the steel components and the concrete components are on the same horizontal line, and the contact surfaces of the steel components and the concrete components can be precisely docked, thereby improving the connection strength between the concrete components and the steel components, reducing the difficulty of combining the concrete components and the steel components, shortening the construction period, and improving the construction efficiency, the steel components can be transported to the steel beam sliding mechanism by a floating crane device, without the need for land transportation, and will not be restricted by the weight, transportation cost and assembly height of the steel components, and compared with traditional assembly processes such as crawler cranes and gantry cranes, it can effectively meet the construction requirements of the bridge, and has the advantages of low construction cost, short construction period, high structural strength, and easy promotion and implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a construction drawing corresponding to step 101 of a dragging and sliding system of a steel-concrete joint section of a bridge in the present application;

[0027] Figure 2 It is a construction drawing corresponding to step 101 of a dragging and sliding system of a steel-concrete joint section of a bridge in the present application;

[0028] Figure 3 It is a construction drawing corresponding to step 102 of a dragging and sliding system of a steel-concrete combined section of a bridge in the present application;

[0029] Figure 4 This application Figure 3 The local method diagram at A in the middle;

[0030] Figure 5 It is a structural schematic diagram of the steel member X of the present application;

[0031] Figure 6 It is a construction drawing corresponding to step 103 of a dragging and sliding system of a bridge steel-concrete combined section on a land construction end of the present application;

[0032] Figure 7It is a construction drawing corresponding to step 104 of a dragging and sliding system of a bridge steel-concrete combined section on a land construction end of the present application;

[0033] Figure 8 This is a structural schematic diagram of a dragging and sliding system support mechanism of a bridge steel-concrete combined section of the present application when it is not dismantled;

[0034] Fig. 9 This application Figure 8 A partial enlarged view of point B in the middle;

[0035] Fig.10 It is a structural schematic diagram of a dragging and sliding system of a steel-concrete combined section of a bridge in the present application. DETAILED DESCRIPTION

[0036] Combined with Figure 1-10 , further illustrating the technical solution provided by the present application, a dragging and sliding system for a steel-concrete joint section of a bridge, comprising:

[0037] Tower 1;

[0038] Support mechanisms 2 are respectively arranged on two land construction ends, and the bridge tower 1 is arranged on the support mechanisms 2;

[0039] A steel beam sliding mechanism 4 is mounted on the support mechanism 2 and is used to transport the steel member X to the end of the support mechanism 2 and connect the steel member X with the concrete member Y disposed on the support mechanism 2;

[0040] The bridge deck body 3 includes a plurality of steel members X, both ends of which are respectively connected to the support mechanism 2 so as to be erected in the target crossing area between the two land construction ends.

[0041] The present application provides a dragging and sliding system for a steel-concrete combined section of a bridge and a construction method thereof, wherein the dragging and sliding system includes a bridge tower, a supporting mechanism respectively arranged on two land construction ends, a steel beam sliding mechanism erected on the supporting mechanism and a bridge deck body, wherein steel components are transported by the steel beam sliding mechanism, and during the transportation process, the steel components and the concrete components are on the same horizontal line, and the contact surfaces of the steel components and the concrete components can be precisely docked, thereby improving the connection strength between the concrete components and the steel components, reducing the difficulty of combining the concrete components and the steel components, shortening the construction period, and improving the construction efficiency, the steel components can be transported to the steel beam sliding mechanism by a floating crane device, without the need for land transportation, and will not be restricted by the weight, transportation cost and assembly height of the steel components, and compared with traditional assembly processes such as crawler cranes and gantry cranes, it can effectively meet the construction requirements of the bridge, and has the advantages of low construction cost, short construction period, high structural strength, and easy promotion and implementation.

[0042] During the implementation of this embodiment, the supporting mechanism 2 includes a pier 20 pre-buried on the land construction end, a tower base 21 arranged on the pier 20, and a supporting pier group 22 arranged on the side of the land construction end away from the pier 20, and the bridge tower 1 is matched and arranged in the tower base 21.

[0043] During the implementation of this embodiment, the support pier group 22 includes a first support pier 23 pre-buried on the land construction end on the side away from the target crossing area, and a second support pier 24 pre-buried on the land construction end on the side away from the first support pier 23, and the steel beam sliding mechanism 4 is erected on the first support pier 23, the second support pier 24 and the bridge pier 20 at the same time.

[0044] During the implementation of this embodiment, the support mechanism 2 also includes a first support frame 25 pre-buried between the pier 20 and the first support pier 23, and a second support frame 26 arranged between the first support pier 23 and the second support pier 24, and the steel beam sliding mechanism 4 is simultaneously erected between the pier 20, the first support frame 25, the first support pier 23, the second support frame 26 and the second support pier 24.

[0045] During the implementation of this embodiment, the support mechanism 2 further includes a load-bearing platform 27 pre-buried on the land construction end and connected to the tower base 21 .

[0046] During the implementation of this embodiment, the steel beam sliding mechanism 4 includes a sliding seat 40 simultaneously erected between the pier 20, the first support frame 25, the first support pier 23, the second support frame 26 and the second support pier 24, and a sliding member 41 matched with the sliding seat 40. The concrete component Y is cast at one end of the sliding seat 40 away from the target crossing area, and the steel component X is matched with the sliding member 41 to move in a direction close to the concrete component Y, so that the steel component X is connected to the concrete component Y.

[0047] During the implementation of this embodiment, a locking assembly 5 is provided on the second supporting pier 24. When the concrete component Y is arranged on the end of the sliding seat 40 away from the target crossing area, the locking assembly 5 abuts against the concrete component Y to limit the movement of the concrete component Y along the length direction of the sliding seat 40.

[0048] During the implementation of this embodiment, after the steel member X is connected to the concrete member Y, it extends along the length direction of the sliding seat 40 and close to the target spanning area to be erected above the target spanning area. The support mechanism 2 also includes a cable 6 connected to the bridge tower 1 at one end and connected to the steel member X and the concrete member Y at the other end. The cable 6 is arranged at intervals along the length direction of the target spanning area.

[0049] In order to solve the technical problem raised by the present application, the present application provides a construction method of a dragging and sliding system of a steel-concrete combined section of a bridge, comprising the following steps:

[0050] Step 101. Survey the geological data of the two land construction ends and the target crossing area, determine the expected mechanical data of the bridge body based on the geological data obtained from the survey, determine the predetermined construction coordinates at the two land construction ends based on the expected mechanical data of the bridge body, and pre-embed the bridge piers, the first supporting piers, the second supporting piers, the first supporting frames and the second supporting frames at the predetermined construction coordinates, and match and fix the tower bases on the bridge piers. After the tower bases are fixed, corresponding bridge towers are constructed on the tower bases;

[0051] In the actual implementation process, the first support frame and the second support frame should be preloaded at no less than 1.1 times their own weight and the estimated temporary construction load during construction to eliminate the elastic and inelastic deformation of the first support frame and the second support frame. The first support frame and the second support frame are selected for preloading, and the preloading deformation results can be used as a reference value for support frames in other projects;

[0052] In the actual implementation process, during the construction of the first supporting pier and the second supporting pier, the pre-deviation is set according to the construction requirements;

[0053] Step 102. A locking assembly is arranged on the second supporting pier, and a concrete component Y is cast on the second supporting frame. During the casting process, the concrete component Y is abutted against the locking assembly. After the casting of the concrete component is completed, a steel beam sliding mechanism is matched and mounted on the bridge pier, the first supporting pier, the second supporting pier, the first supporting frame, and the second supporting frame;

[0054] In the actual implementation process, Figure 6As described, the concrete component Y is provided with multiple sections. During the pouring of the concrete component Y, the mold is erected and ordinary steel bars are tied, and longitudinal and transverse prestressed pipes are laid. After the strength of the concrete component Y reaches 95% of the design strength, the elastic modulus reaches 100% of the design strength, and the 10-day age requirement is met, the first batch of longitudinal prestressed steel bars are tensioned. During the tensioning of the steel bars, grouting is performed in time for pre-stressing. The tensioning is performed by synchronous tensioning at both ends, first the long steel bar bundle and then the short steel bar bundle, and the tensioning is performed symmetrically from left to right. The maximum unbalanced bundle should not exceed 1 bundle. The tensioning sequence is first the web bundle and then the top plate bundle, and the tensioning is performed symmetrically from outside to inside. During the pouring of the concrete component Y, the bridge tower is constructed at the same time to improve the supporting strength of the bridge tower.

[0055] Step 103: The steel member X is transported to the steel beam sliding mechanism by the floating device, and the steel member X is transported to the concrete member Y by the steel beam sliding mechanism, and the steel member X is connected to the concrete member Y until the steel member X extends to the bridge pier;

[0056] In the actual implementation process, Figure 5 As shown, the steel component X and the steel-concrete composite component are manufactured in advance in the factory as required, and then transported to the bridge pier by ship, and then hoisted to the steel beam sliding mechanism by a 660t floating crane, and then slid to the designed position by the steel beam sliding mechanism to be combined with the concrete component Y cast in step 102. During the combination process, the steel component X and the concrete component Y are located on the same horizontal plane. After the concrete component is prepared as required, the combination accuracy and strength of the steel component X and the concrete component Y can be greatly improved;

[0057] Step 104. Install the beam erection hanger on the steel member X extending to the bridge pier, then install the beam erection crane on the beam erection hanger, transport the steel member X to the bridge pier position by the beam erection crane, and connect multiple steel members X. During the connection process, adjust the shape of the bridge body according to the expected mechanical data of the bridge body determined in step 101, and set cables between the bridge tower and the steel member X. Repeat the steps of hoisting the steel member X and setting cables until the steel member X extends from the bridge towers on the two land construction ends to the top of the target span area and is connected, and then maintain and monitor it. After the maintenance and monitoring are completed, set a damper on the support mechanism and install a shock absorbing device on the cable.

[0058] During the actual implementation process, the steel component X is hoisted by the beam-erecting crane repeatedly, and the position of the steel component X is adjusted by the three-way jack until the steel component is extended to the bridge tower, and then the cable is pulled out from the bridge tower; the hoisting and installation steps of the steel component X are repeated until the steel component X forms the bridge deck and is connected above the target span area. The construction of the bridge body is completed, and it can be put into operation after the static and dynamic load tests are completed.

[0059] During the implementation of this embodiment, in step 103, during the process of the steel beam sliding mechanism conveying the steel component X, a three-way jack is set on the steel beam sliding mechanism. During the movement of the steel component X, the three-way jack adjusts the corresponding position of the steel component X according to the expected mechanical data of the bridge body determined in step 101, and pours concrete at the connection between the steel component X and the concrete component Y.

[0060] During the actual implementation, a three-way jack is set on the steel beam sliding mechanism. After the three-way jack adjusts the position of the steel component X, the steel component X is cast. During the casting process, a steel bar bundle and a prestressed pipe are set in the steel component X to form a steel-concrete combined structure to improve the mechanical strength of the steel-concrete combined structure.

[0061] The present application provides a dragging and sliding system for a steel-concrete combined section of a bridge and a construction method thereof, wherein the dragging and sliding system includes a bridge tower, a supporting mechanism respectively arranged on two land construction ends, a steel beam sliding mechanism erected on the supporting mechanism and a bridge deck body, wherein steel components are transported by the steel beam sliding mechanism, and during the transportation process, the steel components and the concrete components are on the same horizontal line, and the contact surfaces of the steel components and the concrete components can be precisely docked, thereby improving the connection strength between the concrete components and the steel components, reducing the difficulty of combining the concrete components and the steel components, shortening the construction period, and improving the construction efficiency, the steel components can be transported to the steel beam sliding mechanism by a floating crane device, without the need for land transportation, and will not be restricted by the weight, transportation cost and assembly height of the steel components, and compared with traditional assembly processes such as crawler cranes and gantry cranes, it can effectively meet the construction requirements of the bridge, and has the advantages of low construction cost, short construction period, high structural strength, and easy promotion and implementation.

[0062] The above are only embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dragging and sliding system for a bridge steel-concrete joint section, characterized in that: include: Bridge tower (1); Support mechanisms (2) are respectively arranged on the two land construction ends, and the bridge tower (1) is arranged on the support mechanisms (2); A steel beam sliding mechanism (4) is mounted on the support mechanism (2) and is used to transport the steel component (X) to the end of the support mechanism (2), and the steel component (X) can be connected to a concrete component (Y) arranged on the support mechanism (2); The bridge deck body (3) comprises a plurality of steel components (X), both ends of which are respectively connected to the support mechanism (2) so as to be erected in the target crossing area between the two land construction ends.

2. The dragging and sliding system of the steel-concrete joint section of a bridge according to claim 1 is characterized in that: The support mechanism (2) comprises a pier (20) pre-buried on the land construction end, a tower base (21) arranged on the pier (20), and a support pier group (22) arranged on the land construction end on a side away from the pier (20), and the bridge tower (1) is matched and arranged in the tower base (21).

3. The dragging and sliding system of the steel-concrete joint section of a bridge according to claim 2 is characterized in that: The support pier group (22) includes a first support pier (23) pre-buried on a side of the land construction end away from the target crossing area, and a second support pier (24) pre-buried on a side of the land construction end away from the first support pier (23), and the steel beam sliding mechanism (4) is erected on the first support pier (23), the second support pier (24) and the bridge pier (20) at the same time.

4. The dragging and sliding system of the steel-concrete joint section of a bridge according to claim 3 is characterized in that: The support mechanism (2) further comprises a first support frame (25) pre-buried between the bridge pier (20) and the first support pier (23), and a second support frame (26) arranged between the first support pier (23) and the second support pier (24); the steel beam sliding mechanism (4) is simultaneously arranged between the bridge pier (20), the first support frame (25), the first support pier (23), the second support frame (26) and the second support pier (24).

5. The dragging and sliding system of the steel-concrete joint section of a bridge according to claim 2 is characterized in that: The support mechanism (2) further comprises a load-bearing platform (27) pre-buried on the land construction end and connected to the tower base (21).

6. The dragging and sliding system of the steel-concrete joint section of a bridge according to claim 4 is characterized in that: The steel beam sliding mechanism (4) comprises a sliding seat (40) simultaneously erected between the bridge pier (20), the first support frame (25), the first support pier (23), the second support frame (26) and the second support pier (24), and a sliding member (41) matched with the sliding seat (40); the concrete component (Y) is cast at one end of the sliding seat (40) away from the target crossing area; the steel component (X) is matched with the sliding member (41) to move in a direction close to the concrete component (Y) so as to connect the steel component (X) with the concrete component (Y).

7. The dragging and sliding system of the steel-concrete joint section of a bridge according to claim 6 is characterized in that: The second supporting pier (24) is provided with a locking assembly (5). When the concrete component (Y) is arranged on the end of the sliding seat (40) away from the target crossing area, the locking assembly (5) abuts against the concrete component (Y) to limit the movement of the concrete component (Y) along the length direction of the sliding seat (40).

8. The dragging and sliding system of the steel-concrete joint section of a bridge according to claim 6 is characterized in that: After the steel member (X) is connected to the concrete member (Y), it extends along the length direction of the sliding seat (40) and close to the target spanning area so as to be erected above the target spanning area. The support mechanism (2) also includes a cable (6) connected to the bridge tower (1) at one end and connected to the steel member (X) and the concrete member (Y) at the other end. The cable (6) is arranged at intervals along the length direction of the target spanning area.

9. A construction method for a dragging and sliding system of a bridge steel-concrete joint section, characterized in that: The following steps are involved: Step 101. Survey the geological data of the two land construction ends and the target crossing area, determine the expected mechanical data of the bridge body based on the geological data obtained from the survey, determine the predetermined construction coordinates at the two land construction ends based on the expected mechanical data of the bridge body, and pre-embed the bridge piers, the first supporting piers, the second supporting piers, the first supporting frames and the second supporting frames at the predetermined construction coordinates, and match and fix the tower bases on the bridge piers. After the tower bases are fixed, corresponding bridge towers are constructed on the tower bases; Step 102. A locking assembly is arranged on the second supporting pier, and a concrete member (Y) is cast on the second supporting frame. During the casting process, the concrete member (Y) abuts against the locking assembly. After the casting of the concrete member is completed, a steel beam sliding mechanism is matched and mounted on the bridge pier, the first supporting pier, the second supporting pier, the first supporting frame and the second supporting frame; Step 103: The steel member (X) is transported to the steel beam sliding mechanism by the floating device, and the steel member (X) is transported to the concrete member (Y) by the steel beam sliding mechanism, and the steel member (X) is connected to the concrete member (Y) until the steel member (X) extends to the bridge pier; Step 104. Install the beam erection hanger on the steel member (X) extending to the bridge pier, then install the beam erection crane on the beam erection hanger, transport the steel member (X) to the bridge pier position by the beam erection crane, and connect multiple steel members (X). During the connection process, adjust the shape of the bridge body according to the expected mechanical data of the bridge body determined in step 101, and set cables between the bridge tower and the steel member (X). Repeat the steps of lifting the steel member (X) and setting cables until the steel member (X) is extended from the bridge towers on the two land construction ends to the top of the target crossing area and is connected, and then maintain and monitor it. After the maintenance and monitoring are completed, set a damper on the support mechanism and install a shock-absorbing device on the cable.

10. The construction method of the dragging and sliding system of the steel-concrete joint section of a bridge according to claim 9 is characterized in that: In step 103, during the process of the steel beam sliding mechanism conveying the steel component (X), a three-way jack is set on the steel beam sliding mechanism. During the movement of the steel component (X), the three-way jack adjusts the corresponding position of the steel component (X) according to the expected mechanical data of the bridge body determined in step 101, and pours concrete at the connection between the steel component (X) and the concrete component (Y).

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