Tensioning construction system for concrete-filled steel tube tied arch bridge

Abstract

The embodiment of the utility model provides a tensioning construction system for a concrete-filled steel tube tied arch bridge, and relates to the field of road and bridge construction. The device comprises a bag hanging device, a hanging basket device and a tensioning device. The hanging device comprises a hanging mechanism and a positioning mechanism, and the hanging mechanism is used for being hung on a bridge arch rib. The tensioning device is installed on the suspension mechanism, the telescopic end of the tensioning device is connected with the positioning mechanism, and the positioning mechanism is used for being arranged below the cross beam and connected with the part, located below the cross beam, of the suspender. The hanging basket device is used for being connected with the bridge body and hung below the positioning mechanism. And the safety, reliability and convenience of the prestress tensioning construction of the suspender are improved by adopting a bottom end tensioning process and cooperating with a hanging device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of road and bridge construction, and particularly relates to a steel pipe concrete tied-arch bridge tensioning construction system. BACKGROUND

[0002] In the construction technology of replacing the cable of a steel pipe concrete tied-arch bridge, the replacement of the cable of a conventional suspender bridge adopts the full-support method, and the cable prestress tensioning generally adopts an integral bundle of tension rods, and the adjustment of the cable force is performed at the upper end of the bridge arch rib.

[0003] The inventors have found in research that the cable prestress tensioning construction method of the prior art has at least the following disadvantages:

[0004] Firstly, the replacement of the cable on the bridge deck requires the erection of full supports, which may cause a large safety risk of collapse and falling during construction;

[0005] Secondly, the cable prestress tensioning by the construction personnel at the bridge arch top may cause a large safety risk of falling during construction;

[0006] Thirdly, the cable prestress tensioning at the top end of the arch rib may make it difficult to ensure the construction quality. SUMMARY

[0007] The utility model aims to provide, for example, a steel pipe concrete tied-arch bridge tensioning construction system, which can improve the safety and reliability of suspender prestress tensioning construction.

[0008] Embodiments of the utility model can be implemented as follows:

[0009] In a first aspect, the utility model provides a steel pipe concrete tied-arch bridge tensioning construction system, which is used in cooperation with a bridge arch rib, a bridge body and a cross beam, the bridge arch rib and the cross beam are connected to the bridge body, a suspender is fixed to the bridge arch rib, one end of the suspender penetrates through the cross beam, and the system comprises:

[0010] a sling device, a basket device and a tensioning device; the sling device comprises a suspension mechanism and a positioning mechanism, the suspension mechanism is used for being suspended from the bridge arch rib, the tensioning device is installed on the suspension mechanism, the telescopic end of the tensioning device is connected to the positioning mechanism, and the positioning mechanism is used for being arranged below the cross beam and connected to the part of the suspender below the cross beam; the basket device is used for being connected to the bridge body and suspended below the positioning mechanism.

[0011] In an optional embodiment, the suspension mechanism comprises an anti-skid member, a suspension cable and a first frame body, the anti-skid member is used to be fixed above the bridge arch rib, the suspension cable passes around the bridge arch rib and contacts with the anti-skid member, the anti-skid member is used to limit the sliding of the suspension cable relative to the bridge arch rib in the extension direction of the bridge arch rib; both ends of the suspension cable are connected with the first frame body; the tensioning device is installed on the first frame body.

[0012] Based on the above scheme, by setting the anti-skid member on the bridge arch rib and the suspension cable passing around the bridge arch rib and contacting with the anti-skid member, when the suspension cable has a tendency to slide relative to the bridge arch rib during construction, the movement of the suspension cable is limited by the anti-skid member, the stability of the position of the suspension cable is improved, and the safety of the construction process is improved. The tensioning device is installed on the first frame body, which is convenient to install and stable in position, and is beneficial to provide stable tensioning force.

[0013] In an optional embodiment, the anti-skid member has opposite first and second sides, the first side is fixed to the bridge arch rib, the second side is located on the side away from the bridge arch rib of the first side, at least part of the second side is inclined relative to the first side, and the area of the second side inclined relative to the first side is used to guide the suspension cable to slide towards the bridge arch rib.

[0014] Based on the above scheme, when the suspension cable is installed, the suspension cable contacts the second side first when passing around the bridge, and under the guidance of the inclined area of the second side, the suspension cable can slide away from the second side and slide towards the bridge arch rib, thus reducing the probability of interference between the second side and the suspension cable, and facilitating the installation of the suspension cable.

[0015] In an optional embodiment, the second side is provided with a positioning groove, the second side includes two guide inclines located on both sides of the positioning groove, the inclination directions of the two guide inclines are opposite, and both the two guide inclines are used to guide the suspension cable into the positioning groove.

[0016] Based on the above scheme, the two guide inclines cooperate to facilitate the suspension cable to be inserted into the positioning groove, and both sides of the positioning groove in the extension direction of the bridge arch rib can contact with the suspension cable, so that the limiting effect is good.

[0017] In an optional embodiment, the suspension mechanism further comprises a guide rail, the guide rail is used to be fixed to the top of the bridge arch rib, and the anti-skid member is slidably matched with the guide rail in the extension direction of the guide rail to adjust the position of the anti-skid member relative to the bridge arch rib in the extension direction of the bridge arch rib.

[0018] Based on the above scheme, by sliding the anti-skid piece with the guide rail, the position of the anti-skid piece relative to the guide rail can be adjusted as needed, so that the position of the anti-skid piece relative to the bridge arch rib is adjusted, and the tensioning of the suspender at different positions on the bridge arch rib can be adapted, and the use range is wide.

[0019] In an optional implementation, the number of the anti-skid pieces is multiple, and each of the multiple anti-skid pieces is used to be installed on the bridge arch rib.

[0020] Based on the above scheme, the multiple anti-skid pieces cooperate to improve the limiting effect of the suspension cable.

[0021] In an optional implementation, the suspension mechanism further includes a fixed shaft and two mounting lugs, the two mounting lugs are fixed to the first frame body and are arranged at intervals, each of the mounting lugs is provided with a mounting through hole, the fixed shaft is simultaneously arranged in the two mounting through holes, and the suspension cable is fixedly connected with the fixed shaft.

[0022] Based on the above scheme, the fixed manner of the suspension cable and the first frame body is simple and reliable.

[0023] In an optional implementation, the positioning mechanism includes a second frame body and a mounting column, the mounting column is fixed to the second frame body, the telescopic end of the tensioning device is fixedly connected with the mounting column, and the second frame body is used to be fixedly connected with the suspender.

[0024] Based on the above scheme, the positioning mechanism has a simple structure, is convenient to process and manufacture, and is convenient to connect the suspension mechanism and the suspender through the second positioning mechanism.

[0025] In an optional implementation, the basket device includes a basket body, a support frame and a fall-preventing rope, the basket body is connected with the support frame, the support frame is used to be built on the bridge body, and the fall-preventing rope is connected with the basket body and is used to be wound on a fixing nail installed on the bridge body.

[0026] Based on the above scheme, by arranging the fall-preventing rope, better safety protection measures can be provided for the basket body, so that better protection is provided for construction, and the safety accident rate is reduced.

[0027] In an optional implementation, the tensioning device is a tensioning jack.

[0028] Based on the above scheme, the tensioning device has a simple structure, low cost, is convenient to control, and is stable and reliable in operation, and can meet the requirement of providing the suspender with a set pre-stress.

[0029] The beneficial effects of the embodiments of the utility model include, for example:

[0030] In summary, the steel pipe concrete tied arch bridge tensioning construction system provided by the embodiment fixes the suspension mechanism on the bridge arch rib, positions the tensioning equipment by using the suspension mechanism, and connects the telescopic end of the tensioning equipment with the positioning mechanism, so that the cooperation of the suspension mechanism, the tensioning equipment and the positioning mechanism is realized. The suspension mechanism can provide a support point for the tensioning equipment, so that the positioning mechanism can be driven to move by the tensioning equipment. The positioning mechanism can be connected with the bottom end of the inhaul cable installed on the bridge arch rib, and when the positioning mechanism is driven to descend by the tensioning equipment, the bottom end of the inhaul cable descends, so that the inhaul cable generates prestress. When the inhaul cable generates prestress by being pulled down, the circular nut is screwed outside the suspender, the circular nut is in contact with the bottom surface of the cross beam, the circular nut is used to prevent the inhaul cable from retracting, and the suspender always has prestress. The bottom tensioning mode is adopted, the construction difficulty is reduced, the construction personnel operate on the hanging basket device, the operation is safe and reliable, and the safety risk is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiment, it should be understood, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0032] Figure 1 It is a schematic view of the steel pipe concrete tied arch bridge tensioning construction system of the embodiment of the application.

[0033] Figure 2 It is a schematic view of the guide rail and the anti-skid piece of the embodiment of the application.

[0034] Figure 3 It is a deformation schematic view of the anti-skid piece of the application.

[0035] Icon:

[0036] 001-bridge arch rib; 002-bridge body; 003-cross beam; 004-suspending rod; 005-circular nut; 100-hanging device; 110-suspension mechanism; 111-anti-skid piece; 112-suspension inhaul cable; 113-first frame body; 114-positioning groove; 115-guide rail; 116-fastener; 117-fixing shaft; 118-mounting lifting lug; 120-positioning mechanism; 200-hanging basket device; 210-hanging basket body; 220-support frame; 300-tensioning equipment; 310-telescopic end. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0039] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the utility model, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product in use, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, configuration and operation, therefore, it cannot be understood as a limitation on the utility model.

[0041] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0043] In the prior art, when the steel pipe concrete tied arch bridge is reconstructed and constructed, the original suspender 004 needs to be disassembled, and then a new suspender 004 is anchored. When anchoring the new suspender 004, the construction is generally carried out on the arch rib of the bridge, which is high in height, difficult in construction, and high in safety risk.

[0044] Therefore, the designer provides a steel pipe concrete tied arch tension construction system, which can reduce the construction height, reduce the safety risk, improve the construction safety, and ensure the construction quality.

[0045] It should be noted that the steel pipe concrete tied arch bridge tensioning construction system is mainly used in cooperation with the arch bridge, and in other embodiments, it can also be used in cooperation with other types of bridges, and the specific limitation is not performed in the embodiment. In order to facilitate the description, the arch bridge is taken as an example for description in the embodiment. The arch bridge includes a bridge arch rib 001, a bridge body 002, a cross beam 003 and a suspender 004. The bridge arch rib 001 and the cross beam 003 are connected with the bridge body 002, the cross beam 003 is located below the bridge and is supported by the abutment. The bridge arch rib 001 is located above the bridge body 002. The suspender 004 is installed on the bridge arch rib 001, the lower end of the suspender 004 penetrates through the cross beam 003 and extends out of the bridge body 002, and the purpose of the tensioning construction system is to provide prestress for the suspender 004. During construction, the suspender 004 is pulled from top to bottom to make it in a stretched state, and then the lower part of the suspender 004 in the stretched state is locked by the circular nut 005, the circular nut 005 abuts against the cross beam 003, and the contraction of the suspender 004 is prevented.

[0046] Please refer to Figure 1 The embodiment provides a steel pipe concrete tied arch bridge tensioning construction system, which comprises a sling device 100, a basket device 200 and a tensioning equipment 300. The sling device 100 comprises a suspension mechanism 110 and a positioning mechanism 120, and the suspension mechanism 110 is used for being suspended on the bridge arch rib 001. The tensioning equipment 300 is installed on the suspension mechanism 110, the telescopic end 310 of the tensioning equipment 300 is connected with the positioning mechanism 120, and the positioning mechanism 120 is used for being arranged below the cross beam 003 and being connected with the part of the suspender 004 below the cross beam 003. The basket device 200 is used for being connected with the bridge body 002 and being suspended below the positioning mechanism 120.

[0047] As described above, the working mode of the steel pipe concrete tied arch bridge tensioning construction system provided by the embodiment is as follows:

[0048] The suspension mechanism 110 is fixed on the bridge arch rib 001, the tensioning device 300 is positioned by the suspension mechanism 110, the telescopic end 310 of the tensioning device 300 is connected with the positioning mechanism 120, and thus the cooperation of the suspension mechanism 110, the tensioning device 300 and the positioning mechanism 120 is realized. The suspension mechanism 110 can provide a support point for the tensioning device 300, so that the positioning mechanism 120 can be driven to move by the tensioning device 300. The positioning mechanism 120 can be connected with the bottom end of the cable installed on the bridge arch rib 001, and when the positioning mechanism 120 is driven to descend by the tensioning device 300, the bottom end of the cable descends, so that the cable generates prestress. After the cable generates prestress by being pulled down, the circular nut 005 is screwed on the suspender 004, the circular nut 005 is in contact with the bottom surface of the cross beam 003, the suspender 004 is prevented from retracting by the circular nut 005, and the suspender 004 always has prestress. The construction personnel operates on the hanging basket device 200, and the operation is safe and reliable.

[0049] The suspender can also be referred to as a suspender cable or a sling.

[0050] The following embodiments illustrate the details of the steel pipe concrete tied arch bridge tensioning construction system of the present application by way of example.

[0051] Please refer to Figure 1 In the embodiment, the suspension mechanism 110 can include an anti-skid piece 111, a suspension cable 112 and a first frame body 113. The anti-skid piece 111 is used to be fixed above the bridge arch rib 001, the suspension cable 112 passes through the bridge arch rib 001 and is in contact with the anti-skid piece 111, and the anti-skid piece 111 is used to limit the suspension cable 112 from sliding in the extension direction of the bridge arch rib 001 relative to the bridge arch rib 001. Both ends of the suspension cable 112 are connected with the first frame body 113, and the tensioning device 300 is installed on the first frame body 113.

[0052] It should be noted that the anti-skid piece 111 is arranged on the bridge arch rib 001, the bridge arch rib 001 is an arc-shaped structure, the top surface thereof is an arc surface, the anti-skid piece 111 is fixed on the arc surface of the top, an acute angle is formed between the anti-skid piece 111 and the arc surface, the suspension cable 112 is arranged around the bridge arch rib 001, the suspension cable 112 is located in the angle region formed by the anti-skid piece 111 and the arc surface, and the suspension cable 112 can be in contact with the anti-skid piece 111. During construction, the suspension cable 112 has a tendency to slide relative to the bridge arch rib 001, and under the guidance of the arc surface, the suspension cable 112 abuts against the anti-skid piece 111, the movement of the suspension cable 112 is limited by the anti-skid piece 111, so that the stability of the position of the suspension cable 112 is improved, and the safety of the construction process is improved. The tensioning device 300 is installed on the first frame body 113, the installation is convenient, the position is stable, and a stable tensioning force can be provided.

[0053] It should be understood that in order to improve stability, the suspension cable 112 can be multiple, and the multiple suspension cables 112 are arranged on the bridge arch rib 001, and the multiple suspension cables 112 are arranged at intervals in the length direction of the bridge arch rib 001. Both ends of the multiple suspension cables 112 are fixed on the first frame body 113. When the first frame body 113 is positioned by the multiple suspension cables 112, the first frame body 113 is located on one side in the width direction of the bridge body 002, and can anchor the suspender 004 corresponding to the side of the bridge body 002 extending out of the bridge body 002. The construction methods of the suspenders 004 on both sides of the bridge body 002 are basically the same, and will not be described in detail in the embodiment.

[0054] Optionally, the anti-skid member 111 has opposite first and second side surfaces, the first side surface is fixed to the bridge arch rib 001, and the second side surface is located on the side away from the bridge arch rib 001 of the first side surface. At least part of the second side surface is inclined relative to the first side surface, and the region of the second side surface inclined relative to the first side surface is used to guide the suspension cable 112 to slide to the bridge arch rib 001. In this way, when the suspension cable 112 is installed, the suspension cable 112 contacts the second side surface first when passing around the bridge, and under the guidance of the inclined surface region of the second side surface, the suspension cable 112 can slide away from the second side surface and slide to the bridge arch rib 001. In this way, the probability of interference between the second side surface and the suspension cable 112 is reduced, which is beneficial to the installation of the suspension cable 112.

[0055] Please refer to Figure 3 In some embodiments, the second side surface of the anti-skid member 111 is provided with a positioning groove 114, and the second side surface includes two guide inclined surfaces located on both sides of the positioning groove 114. The inclined directions of the two guide inclined surfaces are opposite, and the two guide inclined surfaces are used to guide the suspension cable 112 into the positioning groove 114.

[0056] In this way, the two guide inclined surfaces cooperate to facilitate the suspension cable 112 to be clamped into the positioning groove 114, and both sides of the positioning groove 114 in the extension direction of the bridge arch rib 001 can contact the suspension cable 112, so that the limiting effect is good.

[0057] It should be understood that the same suspension cable 112 can be positioned by one or more than two anti-skid members 111. When one suspension cable 112 is positioned by more than two anti-skid members 111, the more than two anti-skid members 111 are arranged on the bridge arch rib 001 in the width direction of the bridge body 002.

[0058] Please refer to Figure 2In the embodiment, optionally, the suspension mechanism 110 further comprises a guide rail 115, the guide rail 115 is used for being fixed to the top of the bridge arch rib 001, and the anti-skid piece 111 is slidably matched with the guide rail 115 in the extension direction of the guide rail 115, so as to adjust the position of the anti-skid piece 111 relative to the bridge arch rib 001 in the extension direction of the bridge arch rib 001.

[0059] In this way, by slidingly matching the anti-skid piece 111 with the guide rail 115, the position of the anti-skid piece 111 relative to the guide rail 115 can be adjusted as required, so as to adjust the position of the anti-skid piece 111 relative to the bridge arch rib 001, and the tensioning of the suspender 004 at different positions of the bridge arch rib 001 can be adapted, and the use range is wide. It should be understood that the guide rail 115 can be fixed on the bridge arch rib 001 through pre-buried bolts, and the anti-skid piece 111 can be bolted on the guide rail 115. For example, a plurality of fixing holes can be arranged on the guide rail 115 in the length direction of the guide rail 115, and the fastener 116 such as a bolt can penetrate the anti-skid piece 111 and be screwed with the fixing hole, so as to adjust the position of the anti-skid piece 111. After the position of the anti-skid piece 111 is adjusted, the position of the anti-skid piece 111 relative to the guide rail 115 is fixed, so as to be able to position the position of the suspension cable 112.

[0060] It should be understood that the guide rail 115 can be arranged as an arc-shaped structure same as the bridge arch rib 001.

[0061] In addition, when a plurality of suspenders 004 need to be tensioned, one suspender 004 can be tensioned each time, and the tensioning sequence of the plurality of suspenders 004 is not limited, and the suspenders 004 can be sequentially tensioned in the length direction of the bridge body 002. The installation position of the construction system can be moved according to the position of the suspender 004.

[0062] In the embodiment, optionally, the suspension mechanism 110 further comprises a fixing shaft 117 and two mounting lugs 118, the two mounting lugs 118 are both fixed to the first frame body 113 and are arranged at intervals, and each mounting lug 118 is provided with a mounting through hole. The fixing shaft 117 is simultaneously arranged in the two mounting through holes. The suspension cable 112 is fixedly connected with the fixing shaft 117. The fixing mode of the suspension cable 112 and the first frame body 113 is simple and reliable, and the construction is convenient and fast.

[0063] In the embodiment, optionally, the positioning mechanism 120 comprises a second frame body and a mounting column, the mounting column is fixed to the second frame body, the telescopic end 310 of the tensioning device 300 is fixedly connected with the mounting column, and the second frame body is used for being fixedly connected with the suspender 004. The positioning mechanism 120 has a simple structure, is convenient to process and manufacture, and is convenient to connect the suspension mechanism 110 and the suspender 004 through the second positioning mechanism 120.

[0064] Please refer to Figure 1In the embodiment, the basket device includes a basket body 210, a support frame 220 and a fall protection rope. The basket body 210 is connected with the support frame 220, and the support frame 220 is used to be built on the bridge body 002. The fall protection rope is connected with the basket body 210, and the fall protection rope is used to be wound on the fixing nail installed on the bridge body 002. During construction, the support frame 220 provides a supporting force for the basket body 210, facilitating the installation of the basket body 210 and stabilizing the position of the basket body 210. Meanwhile, the fall protection rope can provide better safety protection for the basket body 210, thereby providing better protection for construction and reducing the rate of safety accidents.

[0065] It should be understood that the basket body 210 can adopt an electric lifting structure, facilitating height adjustment and control.

[0066] In the embodiment, the tensioning device 300 is provided as a tensioning jack. The tensioning device 300 has simple structure, low cost, convenient control, stable and reliable operation, and can meet the requirement of providing a set pre-stress for the suspender 004.

[0067] The steel pipe concrete tied-arch bridge tensioning construction system provided in the embodiment is used to install the bagging and hoisting device 100, the basket device 200 and the tensioning device 300 at a set position during construction, and connect the second frame body with the bottom of the suspender 004 to be tensioned. Then, the tensioning device 300 is started to drive the bottom of the suspender 004 to move downward through the second frame body, the suspender 004 is stretched to generate a pre-stress. After the suspender 004 moves downward, the knob is screwed with the circular nut 005 at the bottom of the suspender 004, the top end of the circular nut 005 is in contact with the bottom surface of the cross beam 003 to lock the suspender 004. In this way, the bottom end tensioning process adopted by the tensioning construction system can further reduce the safety risk compared with the traditional top end tensioning process. The basket device 200 is located below the cross beam 003 to meet the load requirement of the bottom end cable adjusting tooling, construction equipment and the like, and the basket device 200 is easy to move and has high construction efficiency.

[0068] The above merely provides a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A steel pipe concrete tied arch bridge tensioning construction system for use in cooperation with a bridge arch rib (001), a bridge body (002) and a cross beam (003), the bridge arch rib (001) and the cross beam (003) are both connected with the bridge body (002), a suspender (004) is fixed on the bridge arch rib (001), one end of the suspender (004) penetrates through the cross beam (003), characterized in that, The system comprises a sling device (100), a basket device (200) and a tensioning device (300); the sling device (100) comprises a suspension mechanism (110) and a positioning mechanism (120), the suspension mechanism (110) is used for being suspended on the bridge arch rib (001), the tensioning device (300) is installed on the suspension mechanism (110), the telescopic end (310) of the tensioning device (300) is connected with the positioning mechanism (120), the positioning mechanism (120) is used for being arranged below the cross beam (003) and being connected with the part of the suspender (004) below the cross beam (003); the basket device (200) is used for being connected with the bridge body (002) and being suspended below the positioning mechanism (120).

2. The steel pipe concrete tied arch bridge tensioning construction system according to claim 1, characterized in that: the suspension mechanism (110) comprises an anti-slip piece (111), a suspension cable (112) and a first frame body (113), the anti-slip piece (111) is used for being fixed above the bridge arch rib (001), the suspension cable (112) passes around the delivery bridge arch rib (001) and contacts the anti-slip piece (111), the anti-slip piece (111) is used for limiting the suspension cable (112) from sliding relative to the bridge arch rib (001) in the extension direction of the bridge arch rib (001); both ends of the suspension cable (112) are connected with the first frame body (113); the tensioning device (300) is installed on the first frame body (113).

3. The steel pipe concrete tied arch bridge tensioning construction system according to claim 2, characterized in that: the anti-slip piece (111) has opposite first and second side surfaces, the first side surface is fixed to the bridge arch rib (001), the second side surface is located on the side away from the bridge arch rib (001) of the first side surface, at least part of the second side surface is inclined relative to the first side surface, the area of the second side surface inclined relative to the first side surface is used for guiding the suspension cable (112) to slide toward the bridge arch rib (001).

4. The steel pipe concrete tied arch bridge tensioning construction system according to claim 3, characterized in that: the second side surface is provided with a positioning groove (114), the second side surface comprises two guide inclined surfaces located on both sides of the positioning groove (114), the inclined directions of the two guide inclined surfaces are opposite, and the two guide inclined surfaces are both used for guiding the suspension cable (112) to enter the positioning groove (114).

5. The steel pipe concrete tied arch bridge tensioning construction system according to claim 2, characterized in that: ​ The suspension mechanism (110) further comprises a guide rail (115) for being fixed to the top of the bridge arch rib (001), and the anti-skid piece (111) is slidably matched with the guide rail (115) in the extension direction of the guide rail (115) to adjust the position of the anti-skid piece (111) relative to the bridge arch rib (001) in the extension direction of the bridge arch rib (001). 6.The steel pipe concrete tied-arch bridge tensioning construction system according to claim 2, characterized in that: The number of the anti-skid pieces (111) is multiple, and the multiple anti-skid pieces (111) are all used for being installed on the bridge arch rib (001). 7.The steel pipe concrete tied-arch bridge tensioning construction system according to any one of claims 2-6, characterized in that: The suspension mechanism (110) further comprises a fixing shaft (117) and two installation lugs (118), the two installation lugs (118) are both fixed to the first frame body (113) and are arranged at intervals, each installation lug (118) is provided with an installation through hole, the fixing shaft (117) is simultaneously arranged in the two installation through holes, and the suspension cable (112) is fixedly connected with the fixing shaft (117). 8.The steel pipe concrete tied-arch bridge tensioning construction system according to any one of claims 1-6, characterized in that: The positioning mechanism (120) comprises a second frame body and an installation column, the installation column is fixed to the second frame body, the telescopic end (310) of the tensioning device (300) is fixedly connected with the installation column, and the second frame body is used for being fixedly connected with the suspender (004). 9.The steel pipe concrete tied-arch bridge tensioning construction system according to any one of claims 1-6, characterized in that: The hanging basket device comprises a hanging basket body (210), a support frame (220) and a falling prevention rope, the hanging basket body (210) is connected with the support frame (220), the support frame (220) is used for being built on the bridge body (002), and the falling prevention rope is connected with the hanging basket body (210) and is used for being wound on a fixing nail installed on the bridge body (002). 10.The steel pipe concrete tied-arch bridge tensioning construction system according to any one of claims 1-6, characterized in that: The tensioning device (300) is a tensioning jack.

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