CN117966593A - Catwalk erection and scattered cable saddle hoisting synchronous operation construction method - Google Patents

Abstract

The application relates to the technical field of tunnel anchor construction, and provides a catwalk erection and scattered cable saddle hoisting synchronous operation construction method, which comprises the following steps: s1: setting up a transverse hanging bracket on a construction platform; a lifting appliance is arranged at the top of the transverse lifting frame, and a driving piece for driving the lifting appliance to slide along the transverse lifting frame is arranged at the top of the transverse lifting frame; s2: a transfer mechanism is erected between the buttress and the construction platform; s3: setting a lifting point at the bottom of one end of the construction platform; s4: hoisting the cable saddle to a transfer mechanism far away from a hoisting point through a hoisting mechanism; s5: transferring the cable saddle from the construction platform to the buttress by a transfer mechanism; s6: connecting a cable saddle and a buttress; s7: dragging the catwalk bearing rope into the tunnel anchor and anchoring; s8: hoisting the cable saddle to a transfer mechanism close to a hoisting point through a hoisting mechanism; s9: steps S5 to S7 are repeated. The application has the effect of facilitating synchronous construction of cable saddle hoisting and catwalk erection.

Description

Catwalk erection and scattered cable saddle hoisting synchronous operation construction method

Technical Field

The application relates to the field of tunnel anchor construction, in particular to a catwalk erection and scattered cable saddle hoisting synchronous operation construction method.

Background

In the construction process of the suspension bridge, two groups of tunnel anchor structures are needed to be applied to one end of the main body of the bridge and used as anchor points of two groups of main cables of the subsequent bridge; when the tunnel anchor main body is constructed, a buttress is required to be poured in the tunnel anchor; after the tunnel anchor main body is constructed, a cable scattering saddle required by the subsequent anchor main cable is required to be installed on the buttress; meanwhile, the catwalk bearing rope is pulled into the tunnel anchor and anchored in the tunnel anchor through the anchor, so that a catwalk structure required by main cable erection construction is supported on the catwalk bearing rope in the follow-up process;

Because the buttress is positioned in the tunnel anchor openings, before the cable saddle is installed and constructed, a construction platform needs to be poured at the two groups of tunnel anchor openings, a longitudinal hanging bracket is erected at the position, close to the tunnel anchor openings, of the construction platform, and a hanging tool capable of moving along the hanging bracket is installed on the longitudinal hanging bracket; the hoisting front section of the longitudinal hanger needs to extend out of one side of the construction platform far away from the tunnel anchor hole, so that a loose cable saddle is conveniently hoisted to the construction platform from the bottom of the construction platform through a hoisting tool; a transfer mechanism is arranged between the buttress and the construction platform; when the loose cable saddle is lifted and constructed, after the loose cable saddle to be installed is lifted and mounted to a transfer mechanism on a construction platform through a lifting appliance, the loose cable saddle is transferred to a buttress in a tunnel anchor through the transfer mechanism, and the loose cable saddle is connected with the buttress.

According to the construction method, the front end of the vertical hanging frame for hanging the loose cable saddle needs to extend outwards to one side, far away from the tunnel anchor hole, of the construction platform, so that the front end of the vertical hanging frame collides with the erection path of the subsequent catwalk bearing rope, after the subsequent loose cable saddle is installed and the vertical hanging frame is removed, the catwalk bearing rope can be erected, the whole construction is complicated, the construction period is long, the construction efficiency is low, and therefore improvement space exists.

Disclosure of Invention

The application provides a catwalk erection and suspension saddle hoisting synchronous operation construction method for facilitating suspension saddle hoisting construction and catwalk bearing rope erection construction.

The application provides a catwalk erection and cable saddle hoisting synchronous operation construction method, which adopts the following technical scheme:

a catwalk erection and scattered cable saddle hoisting synchronous operation construction method comprises the following steps:

S1: the hoisting mechanism is erected: setting up a transverse hanging bracket on a construction platform; the two ends of the transverse hanging frame extend out of the two ends of the construction platform respectively while the transverse hanging frame stretches across the two groups of tunnel anchor holes; a lifting appliance is arranged at the top of the transverse lifting frame, and a driving piece for driving the lifting appliance to slide along the transverse lifting frame is arranged at the top of the transverse lifting frame;

s2: and (3) construction of a transfer mechanism: a transfer mechanism is erected between the buttress and the construction platform;

S3: a lifting point wheel is arranged at the bottom of one end of the construction platform, and a cable saddle to be installed is moved to a lifting point;

s4: hoisting a cable saddle at a lifting point to a transfer mechanism at a tunnel anchor hole far away from the lifting point through a hoisting mechanism;

S5: cable saddle transfer: transferring the cable saddle from the construction platform to the buttress by a transfer mechanism;

S6: connecting a cable saddle and a buttress;

s7: erecting a catwalk bearing cable: dragging the catwalk bearing rope into the tunnel anchor and anchoring;

S8: hoisting a cable saddle at a lifting point to a transfer mechanism at a tunnel anchor hole near the lifting point through a hoisting mechanism;

S9: and (5) repeating the steps S5 to S7 until the installation of the cable saddle of the residual tunnel anchor and the erection of the catwalk bearing cable are completed.

By adopting the technical scheme, the two ends of the transverse hanging frame extend out of the two ends of the construction platform respectively while the transverse hanging frame spans the two groups of tunnel anchor holes, so that the transverse hanging frame can lift a cable saddle from one end of the construction platform, and the transverse hanging frame does not need to extend out to one side of the construction platform far away from the tunnel anchor holes; interference between the transverse hanging frame and a subsequent catwalk bearing cable erection path is reduced, so that the catwalk bearing cable erection construction condition is affected; the construction of erecting the catwalk bearing cable can be realized without dismounting the hoisting system, and the synchronous construction of the suspension saddle hoisting and catwalk bearing cable erection is facilitated; the hoisting mechanism is used for hoisting the scattered cable saddle onto the transfer mechanism of the tunnel anchor far away from the hoisting point, so that the situation that the catwalk bearing cable is erected is influenced due to the fact that the moving path of the scattered cable saddle interferes with the catwalk erection path of the tunnel anchor on which the scattered cable saddle is installed when the remaining scattered cable saddle is hoisted to the tunnel anchor on which the scattered cable saddle is not installed through the hoisting mechanism in the follow-up process.

Preferably, the lifting appliance comprises a sliding seat which is connected to the top of the transverse lifting frame in a sliding manner, a plurality of lifting windlass frames are arranged on the sliding seat, the driving piece comprises two groups of first traction windlass frames which are respectively arranged at two ends of the transverse lifting frame, and the first traction windlass frames at two ends of the transverse lifting frame are respectively connected with two opposite sides of the sliding seat.

Through adopting above-mentioned technical scheme, receive and release self hawser through the cooperation of the first traction winch at horizontal gallows top both ends, alright drive support and hoist and mount hoist on the support slide along horizontal gallows, be convenient for cooperate hoist and mount the cable saddle of will loosing to the transfer mechanism of tunnel portal department from the hoisting point.

Preferably, the transfer mechanism comprises a track module, a transfer trolley, a driving module and a hanging bracket module;

The track module is supported on the bottom wall of the tunnel anchor hole, one end of the track module extends to one side of the buttress towards the tunnel anchor hole, and the other end of the track module extends to the construction platform; the transfer trolley is connected to the track module in a sliding manner; the driving module is in driving connection with the transfer trolley and is used for driving the transfer trolley to slide along the track module; the hanging bracket module comprises a hanging bracket erected above the buttress, one end of the hanging bracket extends to the upper part of the track module, and a plurality of electric hoists are arranged on the hanging bracket;

in step S4: the method comprises the steps that a driving module drives a transfer trolley to move to one end of a track module, which is positioned on a construction platform; after the loose cable saddle is dropped to the transfer trolley through the hoisting mechanism, temporarily fixing the transfer trolley and the loose cable saddle and disconnecting the hoisting tool from the loose cable saddle;

In step S5, the driving module drives the transferring trolley to drive the cable saddle to move to one end of the track module, which is close to the buttress, the electric hoist on the hoisting support is connected to the cable saddle, the transferring trolley is disconnected from the cable saddle, and the position of the cable saddle is adjusted through the cooperation of the electric hoist until the cable saddle falls to the buttress.

Through adopting above-mentioned technical scheme, realize on shifting the cable saddle that looses from construction platform to the buttress that is located tunnel anchor entrance to a cave through transfer mechanism, the cable saddle of being convenient for and the connection construction of corresponding buttress.

Preferably, the bottom flange of the cable saddle is provided with a plurality of through holes; the transfer trolley is provided with a plurality of connecting holes corresponding to the plurality of through holes;

In the step S4, when the cable saddle is temporarily fixed and the trolley is transferred, the cable saddle is placed on the trolley and a plurality of through holes of a flange at the bottom of the cable saddle are opposite to the connecting holes on the trolley one by one; after the connecting bolts sequentially penetrate through the through holes and the connecting holes, the tail ends of the connecting bolts are screwed into the connecting nuts and screwed.

Through adopting above-mentioned technical scheme, realize with scattered cable saddle temporary fixation on transferring the dolly for the scattered cable saddle on the transferring the dolly is difficult for taking place to slide and drops, and the follow-up drive module of being convenient for orders about transferring the dolly and drives scattered cable saddle and remove to buttress department, follow-up electric block with hanging bracket on be connected with scattered cable saddle after, demolish connecting bolt and coupling nut, alright scattered cable saddle and transferring the dolly separation.

Preferably, in step S4, when the loose saddle is lifted onto the transferring trolley through the lifting mechanism, a plurality of guy ropes are bound on the loose saddle, and ground personnel adjust the position of the loose saddle through the guy ropes and the lifting mechanism until the loose saddle is located on the transferring trolley, and meanwhile, the through hole on the bottom plate of the loose saddle is opposite to the connecting hole on the transferring trolley.

Through adopting above-mentioned technical scheme, through the setting of cable rope, when follow-up hoist mechanism down diffuse cable saddle to transferring the dolly, ground personnel on the construction platform pulls the cable rope in order to finely tune the cable saddle position of loosing to follow-up cable saddle that looses falls to transfer the dolly on after, the through-hole on the cable saddle bottom plate can be relative with the connecting hole on the transfer dolly.

Preferably, the driving module comprises a first winch and a second winch which are arranged at the construction platform, and further comprises a support fixed at one side of the buttress towards the tunnel anchor hole, and a reversing rod is erected on the support; the first winch cable is connected with one side of the transfer trolley, which is away from the buttress, and the second winch cable bypasses the reversing rod and is connected with one side of the transfer trolley, which is close to the buttress.

By adopting the technical scheme, the first winch and the second winch are matched to wind or release the respective mooring ropes, so that the transfer trolley can be driven to slide back and forth along the track module, and the transfer trolley is convenient to drive the cable scattering saddle to move.

Preferably, the steering rod is coaxially and rotatably connected with a steering wheel, an annular limiting groove is formed in the periphery of the steering wheel, and a cable of the second winch is embedded in the annular limiting groove of the steering wheel.

By adopting the technical scheme, the friction force between the cable of the second winch and the steering rod is reduced through the steering wheel, and the abrasion of the cable of the second driving winch and the steering rod caused by long-time friction between the cable and the steering rod when the second winch winds and unwinds the cable of the second winch is reduced.

Preferably, in step S2, before the transfer mechanism is erected, a reinforcing mesh is hung on the bottom wall of the tunnel anchor, and a concrete cushion layer is sprayed to perform leveling and reinforcement treatment.

Through adopting above-mentioned technical scheme, be convenient for promote the bulk strength and the roughness of tunnel anchor diapire, the track module of the follow-up transfer mechanism of being convenient for can firmly support more on the tunnel anchor diapire.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The two ends of the transverse hanging frame which cross two groups of tunnels extend out of two sides of the construction platform respectively, when the cable saddle is hung by the hanging mechanism, the hanging mechanism can hang the cable saddle to the construction platform from one end of the construction platform, when the cable saddle is limited to be lifted from the position of the construction platform away from the tunnel anchor hole, the hanging frame needs to extend outwards to one side of the construction platform away from the tunnel anchor hole, so that the situation that the hanging system interferes with the catwalk bearing cable erection path is caused, and synchronous construction of catwalk bearing cable and cable saddle hanging is facilitated.

2. The suspension saddle is firstly suspended to the transfer mechanism of the tunnel anchor far away from the lifting point through the suspension system, so that interference with the catwalk bearing cable erection path of the tunnel anchor provided with the suspension saddle is reduced when the suspension saddle is suspended to the tunnel anchor to be provided with the suspension saddle.

3. After the loose cable saddle is placed on the transfer trolley through the hoisting system, the loose cable saddle bottom plate is connected with the transfer trolley through the connecting bolts and the connecting nuts, so that temporary fixation of the loose cable saddle and the transfer trolley is realized, and the transfer trolley is not easy to fall off when the loose cable saddle slides along the track module under the driving of the driving module.

Drawings

Fig. 1 is a schematic view showing a state when a cable saddle is transferred by a transfer mechanism according to the embodiment of the present application.

Fig. 2is an enlarged schematic view of the portion a in fig. 1.

Fig. 3 is a schematic view illustrating the positions of the buttresses and lifting frames in the tunnel anchor according to an embodiment of the present application.

Fig. 4 is an enlarged schematic view of the portion B in fig. 3.

Fig. 5 is an enlarged schematic view of the portion C in fig. 3.

Reference numerals illustrate:

1. a tunnel anchor; 10. a buttress; 2. a construction platform; 21. a lifting point; 3. a hoisting mechanism; 31. a transverse hanger; 311. a slide rail; 32. a lifting appliance; 321. a slide; 322. hoisting a winch; 33. a first traction winch; 4. a transfer mechanism; 40. a guide rail; 41. a transfer trolley; 411. a pulley; 42. a first driving winch; 43. a second driving winch; 44. a fixing seat; 441. a steering wheel; 45. hoisting the bracket; 46. an electric hoist; 5. a cable saddle; 51. a bottom plate.

Detailed Description

The application is described in further detail below with reference to fig. 1-5.

The bottom of the cable saddle 5 is provided with a bottom plate 51, the bottom plate 51 is provided with a plurality of through holes in a surrounding mode, and a plurality of hanging rings are fixedly welded to the top of the cable saddle 5.

The embodiment of the application discloses a catwalk erection and cable saddle hoisting synchronous operation construction method, which comprises the following steps with reference to fig. 1 and 2:

a catwalk erection and scattered cable saddle hoisting synchronous operation construction method comprises the following steps:

S1: lifting mechanism 3 is erected: the method comprises the following specific steps:

s1.1: a transverse hanging bracket 31 is erected on the construction platform 2; the two ends of the transverse hanging frame 31 respectively extend out of the two ends of the construction platform 2 while the transverse hanging frame 31 spans the openings of the two groups of tunnel anchors 1;

s1.2: a spreader is mounted on top of the transverse spreader 31 and a driving member for driving the spreader to slide along the transverse spreader 31.

When the transverse hanging frame 31 is erected, the main body structure and the connecting system of the transverse hanging frame 31 are staggered with the tunnel anchor 1 hole, so that the interference between the transverse hanging frame 31 and the subsequent catwalk bearing cable erection path is reduced. The lifting appliance comprises a sliding seat 321 and two groups of lifting winches 322 arranged on the sliding seat 321; two groups of sliding rails 311 are laid on the top of the transverse hanging frame 31, two ends of the sliding rails 311 extend to two ends of the transverse hanging frame 31 respectively, and the bottom of the sliding seat 321 is connected to the two groups of sliding rails 311 in a sliding manner through rollers, so that the sliding seat 321 is connected to the top in a sliding manner; the driving member includes first traction winches 33 installed at two ends of the top of the transverse hanging frame 31, in this embodiment, two groups of first traction winches 33 are provided at each end of the top of the transverse hanging frame 31, the first traction winches 33 at two ends of the transverse hanging frame 31 are fixedly connected with two sides of the sliding seat 321 respectively, and the sliding seat 321 can be driven to slide along the transverse hanging frame 31 by the first traction winches 33 at two ends of the transverse hanging frame 31 being matched with the self-cable.

S2: and (4) construction of a transfer mechanism: a transfer mechanism 4 is erected between the buttress 10 and the construction platform 2.

Referring to fig. 3 and 4, the transfer mechanism 4 includes a rail module; a transfer cart 41, a drive module, and a cradle module; the track module comprises two groups of guide rails 40 which are paved at the bottom of the tunnel anchor 1 and are arranged in parallel; one end of the guide rail 40 extends to the side of the buttress 10 facing the tunnel anchor 1 opening, and the other end of the guide rail 40 extends to the construction platform 2. The guide rails 40 are provided with track grooves, the two opposite sides of the bottom of the transfer trolley 41 are provided with a plurality of pulleys 411, and the pulleys 411 on the two sides of the bottom of the transfer trolley 41 are respectively and slidably connected in the track grooves of the two groups of guide rails 40, so that the transfer trolley 41 is slidably connected in the track modules.

Referring to fig. 4 and 5, the driving module includes a first driving winch 42 and a second driving winch 43 mounted on the construction platform 2, and in this embodiment, the first driving winch 42 is provided with two groups, and the second driving winch is provided with one group; the driving module is further arranged on a fixed seat 44 on one side of the buttress 10 close to the tunnel anchor 1 hole, the fixed seat 44 is fixed on the buttress 10 through an embedded part, a steering rod is fixed on the fixed seat 44, the steering rod is coaxially and rotatably connected with a steering wheel 441, and an annular limiting groove is formed in the periphery of the steering wheel 441; the cable of the first driving winch 42 is fixedly connected with one side of the transfer trolley 41, which is away from the buttress 10, and the cable of the second winch passes through the bottom of the transfer trolley 41 and bypasses the steering wheel 441 and is fixedly connected with one side of the transfer trolley 41, which is close to the buttress 10; through the arrangement, the cable is retracted and released through the cooperation of the first driving winch 42 and the second winch, and the transfer trolley 41 can be driven to slide on the two groups of sliding rails 311. The transfer trolley 41 is provided with a plurality of connecting holes corresponding to a plurality of through holes on the bottom plate 51 of the cable saddle 5.

The hanging bracket module comprises a hanging bracket 45 which is arranged above the buttress 10 in a supporting way, and one end of the hanging bracket 45 extends to the upper part of the sliding rail 311; a plurality of electric hoists 46 are fixed on the hoisting support 45.

The specific steps of step S2 are as follows:

S2.1: leveling and reinforcing the bottom wall of the tunnel: paving a reinforcing mesh on the bottom wall of the tunnel anchor 1 and pouring concrete to level and strengthen the bottom wall of the tunnel anchor 1;

s2.2: the construction of a hanging bracket module, namely, erecting a hanging bracket 45 above the buttress 10, and installing an electric hoist 46 on the hanging bracket 45;

s2.3: track module construction: two groups of guide rails 40 are anchored on the bottom wall of the tunnel anchor 1;

S2.5: and (4) mounting and constructing a transfer trolley 41: the pulleys 411 on two sides of the bottom of the transfer trolley 41 are respectively and slidably connected in the track grooves of the two groups of guide rails 40;

S2.6: and (3) installing and constructing a driving module: installing a first driving winch 42 and a second driving winch 43 on the construction platform 2;

S2.7: the driving module is connected with the transfer trolley 41 for construction: fixedly connecting cables of two groups of first driving winches 42 to one side of the transfer trolley 41 facing away from the buttress 10; a cable for driving the winch 43 passes through the bottom of the transferring trolley 41 and bypasses the steering wheel 441 on the buttress 10 to be connected to one side of the transferring trolley 41 close to the buttress 10;

s3: a lifting point 21 wheel is set up at the bottom of one end of the construction platform 2 and the cable saddle 5 to be mounted is moved to the lifting point 21.

S4: referring to fig. 1 and 4, a cable saddle 5 of a lifting point 21 is lifted to a transfer mechanism 4 at the opening of a tunnel anchor 1 far from the lifting point 21 by a lifting mechanism 3; the method comprises the following specific steps:

s4.1: the corresponding transfer trolley 41 is driven to move onto the construction platform 2 through the driving module;

S4.2: the sliding seat 321 and the two groups of hoisting winches 322 are driven to move to one end of the transverse hanger 31 near the hoisting point 21 by the driving piece;

s4.3: fixedly connecting the mooring ropes of the two groups of hoisting windlass 322 with the hanging rings on the scattered cable saddle 5 through shackles;

S4.4: hoisting the loose saddle 5 by two groups of hoisting winches 322 and moving the loose saddle 5 to be positioned above the transfer trolley 41 positioned at the tunnel anchor 1 opening far from the hoisting point 21 in cooperation with a driving piece;

s4.5: binding a plurality of cable ropes on the cable saddle 5;

s4.6: while hoisting the hoist 322 to lower the loose saddle 5, the ground personnel of the construction platform 2 pull the cable rope to adjust the position of the loose saddle 5 until the loose saddle 5 falls onto the transfer trolley 41, and the through holes on the bottom plate 51 of the loose saddle 5 are opposite to the connecting holes on the transfer trolley 41 one by one.

S5: and transferring a cable saddle 5: transferring the cable saddle 5 from the construction platform 2 to the buttress 10 through the transfer mechanism 4;

S5.1: the loose cable saddle 5 is temporarily fixed with the transfer trolley 41, a connecting bolt sequentially penetrates through a through hole on the loose cable saddle 5 and a connecting hole on the transfer trolley 41, a connecting nut is screwed into the tail end of the connecting bolt, and the connecting nut is rotated until the connecting nut is abutted against the bottom side of the transfer trolley 41;

S5.2: and transferring a cable saddle 5: the first driving winch 42 and the second driving winch 43 are matched to retract and release the mooring ropes so as to drive the transfer trolley 41 and the cable scattering saddle 5 to move to one end of the sliding rail 311 close to the buttress 10;

S5.3: the electric hoist 46 on the hoisting bracket 45 is connected and fixed with the hoisting ring on the cable saddle 5;

S5.4: removing connecting bolts and connecting nuts between the bottom plate 51 of the cable saddle 5 and the transfer trolley 41;

S5.5: the position of the cable saddle 5 is adjusted by matching a plurality of electric hoists 46 until the cable saddle 5 falls onto the buttress 10.

S6: connecting the cable saddle 5 with the abutment 10.

S7: erecting a catwalk bearing cable: dragging the catwalk bearing rope into the tunnel anchor 1 and anchoring; the method comprises the following specific steps:

S7.1: an anchor for connecting catwalk bearing ropes is fixed on one side of the buttress 10 facing the tunnel anchor 1 hole through an embedded part;

S7.2: the transfer trolley 41 is driven to move to the construction platform 2 through the driving module;

s7.3: a second traction winch is installed on the transfer cart 41;

S7.4: catwalk load-bearing cable traction: after the second traction winch is connected with the catwalk bearing rope, the catwalk bearing rope is firstly towed to the construction platform 2 through the second traction winch;

s7.5: the driving module drives the transfer trolley 41 to drive the catwalk bearing cable to move to an anchorage device on the buttress 10;

S7.6: and (3) catwalk bearing cable connection construction: the connection of the bearing cable to the second traction hoist on the transfer trolley 41 is disconnected and the catwalk bearing cable is connected to the anchor.

S8: hoisting the cable saddle 5 of the lifting point 21 to a transfer mechanism 4 at the opening of the tunnel anchor 1 close to the lifting point 21 through a hoisting mechanism 3; the specific steps of step S8 are the same as those of step S4, and thus will not be described in detail.

S9: and repeating the steps S5 to S7 until the installation of the cable saddle 5 of the residual tunnel anchor 1 and the erection of the catwalk bearing cable are completed.

According to the application, the hoisting mechanism 3 is arranged, the transverse hanging frames 31 of the hoisting mechanism 3 span two groups of tunnels, the two ends of the transverse hanging frames 31 respectively extend out of two sides of the construction platform 2, when the cable saddle is hoisted by the hoisting mechanism 3, the hoisting mechanism 3 can hoist the cable saddle 5 from one end of the construction platform 2 to the construction platform 2, the hoisting mechanism 3 does not need to extend out to one side of the construction platform 2 far away from a tunnel portal, interference between a hoisting system and a subsequent catwalk bearing cable erection path is reduced, and the catwalk bearing cable erection construction is influenced.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (8)

1. A catwalk erection and scattered cable saddle hoisting synchronous operation construction method is characterized in that: the method comprises the following steps:

S1: lifting device (3) sets up: a transverse hanging bracket (31) is erected on the construction platform (2); the two ends of the transverse hanging frame (31) respectively extend out of the two ends of the construction platform (2) when the transverse hanging frame (31) stretches across the openings of the two groups of tunnel anchors (1); a lifting appliance (32) and a driving piece for driving the lifting appliance (32) to slide along the transverse lifting appliance (31) are arranged at the top of the transverse lifting appliance (31);

s2: and (3) construction of a transfer mechanism (4): a transfer mechanism (4) is erected between the buttress (10) and the construction platform (2);

s3: a lifting point (21) wheel is arranged at the bottom of one end of the construction platform (2) and a cable saddle (5) to be installed is moved to the lifting point (21);

s4: hoisting a cable saddle (5) of a lifting point (21) to a transfer mechanism (4) at the opening of a tunnel anchor (1) far away from the lifting point (21) through a hoisting mechanism (3);

s5: transferring a cable saddle (5): transferring the cable saddle (5) from the construction platform (2) to the buttress (10) through the transfer mechanism (4);

s6: connecting the cable saddle (5) with the buttress (10);

s7: erecting a catwalk bearing cable: dragging the catwalk bearing rope into the tunnel anchor (1) and anchoring;

S8: hoisting a cable saddle (5) of a lifting point (21) to a transfer mechanism (4) at the opening of a tunnel anchor (1) close to the lifting point (21) through a hoisting mechanism (3);

s9: and (5) repeating the steps (S5) to (S7) until the installation of the cable saddle (5) of the residual tunnel anchor (1) and the erection of the catwalk bearing cable are completed.

2. The catwalk erection and cable saddle hoisting synchronous operation construction method according to claim 1, wherein the catwalk erection and cable saddle hoisting synchronous operation construction method is characterized in that: the lifting appliance (32) comprises a sliding seat (321) which is slidably connected to the top of the transverse lifting frame (31), a plurality of lifting windlass (322) are erected on the sliding seat (321), the driving piece comprises two groups of first traction windlass (33) which are respectively arranged at two ends of the transverse lifting frame (31), and the first traction windlass (33) at two ends of the transverse lifting frame (31) are respectively connected with two opposite sides of the sliding seat (321).

3. The catwalk erection and cable saddle hoisting synchronous operation construction method according to claim 1, wherein the catwalk erection and cable saddle hoisting synchronous operation construction method is characterized in that: the transfer mechanism (4) comprises a track module, a transfer trolley (41), a driving module and a hanging bracket module;

The track module is supported on the bottom wall of the tunnel anchor (1), one end of the track module extends to one side of the buttress (10) facing the tunnel anchor (1), and the other end of the track module extends to the construction platform (2); the transfer trolley (41) is connected to the track module in a sliding manner; the driving module is in driving connection with the transfer trolley (41) and is used for driving the transfer trolley (41) to slide along the track module; the hanger module comprises a hanging bracket (45) erected above the buttress (10), one end of the hanging bracket (45) extends to the upper part of the track module, and a plurality of electric hoists (46) are arranged on the hanging bracket (45);

In step S4: the transfer trolley (41) is driven to move to one end of the track module, which is positioned on the construction platform (2), through the driving module; after the cable saddle (5) is fallen to the transfer trolley (41) through the hoisting mechanism (3), the transfer trolley (41) and the cable saddle (5) are temporarily fixed, and the connection between the hoisting tool (32) and the cable saddle (5) is disconnected;

In the step S5, the transferring trolley (41) is driven by the driving module to drive the cable saddle (5) to move to one end of the track module, which is close to the buttress (10), an electric hoist (46) on the hoisting support (45) is connected to the cable saddle (5), the transferring trolley (41) is disconnected from the cable saddle (5), and the position of the cable saddle (5) is adjusted through the cooperation of the electric hoists (46) until the cable saddle (5) falls to the buttress (10).

4. A catwalk erection and cable saddle hoisting synchronous operation construction method according to claim 3, characterized in that: a plurality of through holes are formed in the bottom flange of the cable saddle (5); a plurality of connecting holes are formed in the transfer trolley (41) corresponding to the plurality of through holes;

In the step S4, when the cable saddle (5) and the transfer trolley (41) are temporarily fixed, the cable saddle (5) is dropped to the transfer trolley (41) and a plurality of through holes of a flange at the bottom of the cable saddle (5) are opposite to the connecting holes on the transfer trolley (41) one by one; after the connecting bolts sequentially penetrate through the through holes and the connecting holes, the tail ends of the connecting bolts are screwed into the connecting nuts and screwed.

5. The catwalk erection and cable saddle hoisting synchronous operation construction method according to claim 4, wherein the catwalk erection and cable saddle hoisting synchronous operation construction method is characterized in that: in step S4, when the cable saddle (5) is hoisted onto the transfer trolley (41) through the hoisting mechanism (3), a plurality of cable ropes are bound on the cable saddle (5), ground personnel adjust the position of the cable saddle (5) through the cable rope matching hoisting mechanism (3) until the cable saddle (5) is fallen onto the transfer trolley (41), and meanwhile, through holes on the bottom plate (51) of the cable saddle (5) are opposite to connecting holes on the transfer trolley (41).

6. A catwalk erection and cable saddle hoisting synchronous operation construction method according to claim 3, characterized in that: the driving module comprises a first winch and a second winch which are arranged at the construction platform (2), and also comprises a support fixed at one side of the buttress (10) facing the tunnel anchor (1), wherein a reversing rod is erected on the support; the first winch cable is connected with one side of the transfer trolley (41) which is away from the buttress (10), and the second winch cable bypasses the reversing rod and is connected with one side of the transfer trolley (41) which is close to the buttress (10).

7. The catwalk erection and cable saddle hoisting synchronous operation construction method according to claim 6, wherein the catwalk erection and cable saddle hoisting synchronous operation construction method is characterized in that: the steering rod is coaxially connected with a steering wheel (441) in a rotating mode, an annular limiting groove is formed in the periphery of the steering wheel (441), and a mooring rope of the second winch is embedded in the annular limiting groove of the steering wheel (441).

8. A catwalk erection and cable saddle hoisting synchronous operation construction method according to claim 3, characterized in that: in the step S2, before the transfer mechanism (4) is supported, a reinforcing mesh is hung on the bottom wall of the tunnel anchor (1) and a concrete cushion layer is sprayed for leveling and reinforcing treatment.