Guy rope type bracket for 0 # block construction of single-tower wide tower beam consolidation area

Abstract

The utility model relates to a guy cable type bracket for 0 # block construction in a single-tower wide tower beam consolidation area. The guy cable type bracket comprises two trusses, a plurality of main bailey beams, a guy cable anchor box, a plurality of guy cables and a plurality of distribution beams, the two trusses are fixedly arranged on the two side walls of the bridge tower in the bridge direction respectively, the multiple main bailey beams are erected on the two trusses on the two sides of the bridge tower in the transverse bridge direction respectively, and the joists are welded between the bottom faces of the ends of the main bailey beams on the two sides of the bridge tower in the bridge direction respectively in the bridge direction. The inhaul cable anchor box is fixedly arranged at the top of the bridge tower; and an inhaul cable is connected between each of the two ends of each joist and the anchor box. The inhaul cable is arranged to buckle and hang the bracket cantilever, the bracket structure is good in balance and stability, the construction safety can be guaranteed, the cable force of the inhaul cable can be adjusted in real time according to the load change and deformation condition of the bracket in the construction process, and the linear precision of the 0 # block can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge construction technical field relates to a 0 block construction of cable-stayed bridge tower beam consolidation area, specifically relates to a 0 block construction of cable-stayed bridge tower beam consolidation area of wide width of single tower. BACKGROUND

[0002] The 0 block of the cable-stayed bridge tower beam consolidation area is higher from the ground, and it is more appropriate to adopt the bracket construction. However, the conventional bracket is more suitable for the double-tower limb bridge tower, and the bracket is set up between the two tower limbs, and the balance and stability are easier to control. For example, the bracket involved in the patent CN221142486U a kind of 0 block triangular bracket counterforce preloading device of large cantilever low tower cable-stayed bridge in water is used in double-limb bridge tower. For the single-tower cable-stayed bridge, if the 0 block of the tower beam consolidation area is constructed by using the bracket, the cantilever of the bracket is long at both ends, and when the width of the bridge is wide, the bracket also needs to be widened. The stability and safety of the bracket are not easy to control, so the current method is to use the floor support or the combination of floor support and bracket. For example, the structure disclosed in the patent CN221589305U a kind of cable-stayed bridge tower area beam segment construction pier side bracket support system is a combination of floor support and bracket, and two groups of floor support frames are symmetrically arranged at the bottom of the bracket to assist the support of the bracket. The floor support generally adopts the structure of steel pipe pile plus flat link, which not only consumes a large amount of material and has high cost, but also requires high bearing capacity of foundation. When the bearing capacity of foundation is insufficient, the steel pipe is prone to sink. In addition, when the tower body is high, the slenderness ratio of the steel pipe is large, which is easy to be compressed and deformed, thereby affecting the linear precision of the 0 block. SUMMARY

[0003] The utility model aims at above -mentioned problem, provide a kind of 0 block construction of cable-stayed bridge tower beam consolidation area of wide width of single tower, the bracket is applied to the 0 block construction of the tower beam consolidation area of single-tower cable-stayed bridge, to reduce cost, and ensure construction safety.

[0004] The technical scheme of the utility model is as follows:

[0005] A kind of 0 block construction of cable-stayed bridge tower beam consolidation area of wide width of single tower, it is characterized by including two trusses, a cable anchor box, a plurality of main bailey beams, a plurality of cables and a plurality of distribution beams.

[0006] The two trusses are respectively arranged on the two side walls of the bridge tower in the bridge direction, and the length of the truss is not less than the length of the 0 block of the tower beam consolidation area in the bridge direction. One row of corbels is fixedly arranged on the two side walls of the bridge tower in the bridge direction, and the bottoms of the two trusses are respectively supported on the two rows of corbels. At least one limiting rod is welded between the two trusses on both sides of the bridge tower in the transverse direction.

[0007] The plurality of main bailey beams are arranged on the two trusses in the transverse direction of the bridge tower on both sides of the tower transversely, the length of the main bailey beam is not less than the width of the 0# block in the tower beam fixed area in the transverse direction, and a support beam is welded in the transverse direction between the bottom surfaces of the ends of the main bailey beams on both sides of the tower in the longitudinal direction of the bridge tower;

[0008] The cable anchor box is fixedly arranged on the top of the bridge tower.

[0009] Each support beam is connected with the anchor box through a cable at both ends, the lower end of the cable is anchored to the support beam, and the upper end of the cable is a tension end and is anchored to the anchor box.

[0010] A plurality of distribution beams are arranged on the main bailey beams in the longitudinal direction of the bridge tower, and the pouring formwork of the 0# block in the tower beam fixed area is arranged on the distribution beams.

[0011] According to a specific embodiment of the utility model, the truss is a right-angled triangle, one of the two vertical surfaces of the truss faces the tower wall, and the other surface is a top surface and is parallel to the horizontal surface.

[0012] Further, at least one cable is connected between the middle of each support beam and the anchor box.

[0013] According to a specific embodiment of the utility model, the truss is a right-angled triangle, one of the two vertical surfaces of the truss faces the tower wall, and the other surface is a top surface and is parallel to the horizontal surface.

[0014] Further, one cable is connected between each outer side of the top surface of each truss and the anchor box.

[0015] The support frame of the utility model adopts the structure of the combination of the truss beam and the bailey beam, has strong bearing capacity, and is provided with the cables for hanging the cantilever of the support frame, so that the support frame has good balance and stability, and the construction safety can be ensured; the cable force can be adjusted in real time according to the load change and deformation of the support frame in the construction process, and the linear precision of the 0# block can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a transverse elevation structure schematic view of the utility model;

[0017] Figure 2 is a longitudinal side structure schematic view of the utility model;

[0018] Figure 3 is a plane structure schematic view of the utility model. DETAILED DESCRIPTION

[0019] As Figure 1 , Figure 2 ,Figure 3 The utility model discloses two trusses 1, a plurality of main bailey beams 2, a cable anchor box 3, a plurality of cables 4, a plurality of distribution beams 5 are shown, and the utility model discloses a bridge tower construction support structure.

[0020] Two trusses 1 are arranged on the bridge tower 10 side wall respectively, the length of the truss is not less than the length of the tower beam consolidation area 0 block bridge direction, and a row of corbels 6 are arranged on the two side walls of the bridge tower bridge direction respectively.

[0021] A plurality of main bailey beams 2 are arranged on the two trusses 1 in the bridge tower transverse direction, and the length of the main bailey beam is not less than the width of the tower beam consolidation area 0 block transverse direction.

[0022] The cable anchor box 3 is fixedly arranged on the top of the bridge tower 10.

[0023] Each end of each support beam 8 is connected with the anchor box 3 through a cable 4, the lower end of each cable 4 is anchored to the support beam 1, and the upper end of each cable is a tension end and is anchored to the anchor box 3.

[0024] A plurality of distribution beams 5 are arranged on each main bailey beam 2 in the bridge direction, and the distribution beam 5 is provided with a pouring formwork of the tower beam consolidation area 0 block.

[0025] The above structure, the cable 4 provides upward tension to the bracket cantilever, can effectively avoid the bending of the bracket cantilever end, ensures the stability of the overall structure of the bracket, and ensures that the bracket meets the bearing capacity requirement of the 0 block construction.

[0026] The conventional bracket can only set up a bearing beam on the two sides of the bridge tower due to the obstruction of the tower body, and a distribution beam is directly arranged between the bearing beams on the two sides of the bridge tower, when the cross section of the bridge tower is large, the distance between the two bearing beams is large, and the middle of the distribution beam lacks support, which may cause sagging and affect the line type of the 0 block.

[0027] The main bailey beam of the utility model is equivalent to the bearing beam of the conventional bracket, and can also be arranged on the two sides of the bridge tower. In view of the above problems, a plurality of auxiliary bailey beams 9 are arranged in a specific embodiment, the plurality of auxiliary bailey beams 9 are arranged on the truss 1 and the support beam 8 in the direction parallel to the main bailey beam and facing the two side walls of the bridge tower in the bridge direction, the plurality of auxiliary bailey beams are located between the main bailey beams, the auxiliary bailey beam 9 and the main bailey beam 2 jointly support the distribution beam 5, and the sagging problem in the middle of the distribution beam can be effectively avoided.

[0028] In the above embodiment, the role of the joist is to provide an anchoring point for the cable and to provide support for the auxiliary Bailey beam. To ensure that the joist has sufficient support force, at least one cable 4 can be connected between the middle of each joist 8 and the anchor box 3.

[0029] In the specific implementation of the utility model, the truss 1 can be a steel structure truss with a right-angled triangular cross section. When the truss is installed on the bridge tower, one of the two mutually perpendicular faces faces the tower wall, and the other face is the top face and is parallel to the horizontal plane.

[0030] Because the cantilever of the truss is long, to avoid the deformation of the truss at both ends, in the specific implementation, a cable 4 can be connected between the two ends of the outer side edge of the top face of each truss 1 and the anchor box 3.

[0031] Taking the construction of a variable cross-section single-tower tower beam fixed zone 0# block as an example, the construction method of the cable-pulled bracket of the utility model is as follows:

[0032] (1) When the bridge tower 10 is constructed, the fine rolled thread bar is embedded as a bracket connecting piece at the designed installation position of the bracket on the bridge tower. When the bracket 6 is installed, the fine rolled thread bar is tensioned to the designed load.

[0033] (2) After the construction of the bridge tower is completed on the tower beam fixed zone 0# block, the truss 1 is hoisted to the installation position by the tower crane. Because the tower body is of variable cross-section, a pad is arranged between the truss and the tower wall to ensure that the truss is tightly fitted with the tower body, and then a limiting rod 7 is welded between the two trusses, which on the one hand ensures the connection of the two trusses and on the other hand avoids the inclination and longitudinal displacement of the truss.

[0034] (3) The main Bailey beam 2 and the auxiliary Bailey beam 9 are installed on the truss, and the distribution beam 5 is erected.

[0035] (4) The fixed cable anchor box 3 is installed on the top of the tower.

[0036] (5) The cable 4 is installed between the joist 8, the truss 1 and the anchor box 3, and the cable is pre-tensioned on the top of the tower.

[0037] (6) The bracket is pre-pressed. During the pre-pressing process, the tension of the cable can be adjusted according to the design value as the pre-pressing load increases, to ensure that the top surface line of the bracket meets the design requirements.

[0038] (7) After the bracket passes the inspection, the formwork is installed, the steel bars of the 0# block are bound, the concrete is poured, and the tower beam fixed zone 0# block 11 is constructed. During the construction process, whether the bracket is deformed is monitored in real time. Once the deformation occurs, the bracket is adjusted in time by adjusting the cable force. After the construction of the 0# block is completed, the bracket is removed, and the upper segment of the bridge tower is continuously poured.

Claims

1. A cable stayed bracket for construction of a 0# block of a fixed zone of a single tower wide tower beam, characterized in that: Two trusses, a plurality of main Bailey beams, a cable anchor box, a plurality of cables, a plurality of distribution beams; Two trusses are arranged on the sidewalls of the bridge tower in the bridge longitudinal direction, the length of the truss is not less than the length of the 0# block of the tower beam fixed area in the bridge longitudinal direction, a row of corbels is arranged on the sidewalls of the bridge tower in the bridge longitudinal direction, the bottoms of the two trusses are supported on the two rows of corbels, and at least one limiting rod is welded between the two trusses in the bridge transverse direction of the bridge tower; A plurality of main Bailey beams are arranged on the two trusses in the bridge transverse direction of the bridge tower, the length of the main Bailey beam is not less than the width of the 0# block of the tower beam fixed area in the bridge transverse direction, and a support beam is welded between the end faces of the main Bailey beams in the bridge longitudinal direction of the bridge tower; The cable anchor box is fixedly arranged on the top of the bridge tower; Each support beam is connected with the anchor box through a cable, the lower end of the cable is anchored to the support beam, and the upper end of the cable is a tension end and is anchored to the anchor box. A plurality of distribution beams are arranged on the main Bailey beams in the bridge longitudinal direction, and the distribution beams are provided with pouring templates for the 0# block of the tower beam fixed area.

2. The cable-supported bridge of claim 1, wherein: The cable-pulled bracket further comprises a plurality of auxiliary Bailey beams, the auxiliary Bailey beams are arranged on the trusses and the support beams in the direction parallel to the main Bailey beams and opposite to the sidewalls of the bridge tower in the bridge longitudinal direction, and the auxiliary Bailey beams and the main Bailey beams jointly support the distribution beams.

3. The cable-suspended bracket of claim 1, wherein: The middle part of each support beam is connected with the anchor box through at least one cable.

4. The cable-suspended bracket of claim 1, wherein: The cross section of the truss is a right triangle, one of the two mutually perpendicular surfaces of the truss faces the sidewall of the tower, and the other surface is a top surface and is parallel to the horizontal surface.

5. The cable-supported bridge of claim 4, wherein: The two ends of the outer side of the top surface of each truss are connected with the anchor box through a cable.

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