CN204325940U - A kind of large span arch bridge non-support cable crane system construction pylon - Google Patents

Abstract

The utility model discloses a tower frame used for hoisting construction of a large-span arch bridge without a support cable, which comprises a herringbone support composed of two symmetrically arranged oblique support frames on the left and right and an upper distribution beam horizontally supported on the top of the herringbone support. The two oblique support frames are fastened and connected as a whole through multiple vertical support frames; the oblique support frame is assembled by four plane trusses and its cross section is rectangular, and the four plane trusses are connected by multiple horizontal trusses. The support frame is fastened and connected as a whole; the upper part of each inclined support frame is equipped with two lower distribution beams on the left and right, and the lower distribution beam and the upper distribution beam are vertically arranged; the upper distribution beam is provided with a working cable pulley, and the upper distribution beam A plurality of cable saddles are arranged in the middle part of the upper part, and a cable pulley is respectively arranged on the left and right sides of the saddle. The utility model has the advantages of simple structure, reasonable design, convenient disassembly and assembly, and good use effect, which can meet the requirements of cable hoisting for large-span arch bridges, and the hoisting process is safe and reliable.

Description

A tower frame for the construction of a long-span arch bridge without support cable hoisting

technical field

The utility model relates to a tower frame, in particular to a tower frame used for hoisting and construction of a large-span arch bridge without a support cable.

Background technique

With the continuous development of transportation in the western region, the construction in the mountainous and hilly areas is increasing, and the cable hoisting system is being used more and more. Cable crane is a special type of hoisting equipment, which has many unique advantages, is not restricted by climate and terrain, and can play a role that other hoisting machinery cannot play under certain conditions, and is widely used in engineering construction. When expressways and railway bridges cross heavy mountainous areas, it is often impossible to erect supports or use hoisting machinery for construction. Due to the high cost of building sidewalks in mountainous areas, the construction technology of erecting supports in rivers and lakes is difficult. In view of the inconvenience of traffic diversion caused by crossing existing lines, cable hoisting has become the most economical and reasonable solution choice in highway and railway construction, especially for bridges crossing large rivers, cliffs, rivers, lakes, etc. and crossing existing There is a large room for development in the construction technology research of the line. However, it is very difficult to use cable hoisting to construct long-span arch bridges without supports, especially when performing cable hoisting construction on long-span arch bridges on steep cliffs. There are few technical materials available for reference in this type of construction. , due to the complex structure of the bridge, the construction difficulty is great, and there are many safety hazards. In addition, in order to ensure the construction safety, quality and construction period, the technical requirements of the construction process are very high. The cable hoisting device is the key construction equipment for safely and smoothly completing the unsupported cable hoisting of long-span arch bridges. The tower is the main body of the cable hoisting device, and its bearing capacity must meet the requirements for unsupported hoisting of long-span arch bridges. In order to complete the hoisting process of long-span arch bridges without brackets and cables easily, quickly, safely and reliably, it is necessary to design a construction tower with simple structure, reasonable design, easy disassembly and assembly, and good use effect. , which can meet the requirements for cable hoisting of long-span arch bridges, and the hoisting process is safe and reliable.

Utility model content

The technical problem to be solved by the utility model is to provide a large-span arch bridge without support cable hoisting construction tower for the above-mentioned deficiencies in the prior art. It meets the requirements of cable hoisting for long-span arch bridges.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a large-span arch bridge unsupported cable hoisting construction tower, which is characterized in that it includes a herringbone structure composed of two symmetrically arranged oblique support frames. The bracket and the upper distribution beam horizontally supported on the top of the herringbone bracket, the upper distribution beam and the herringbone bracket are arranged on the same vertical plane; the structures of the two inclined support frames are the same and both Gradually incline outward from top to bottom, and the two oblique support frames are fastened and connected as a whole through a plurality of vertical support frames, and the plurality of vertical support frames are all connected to the two oblique support frames. It is arranged on the same vertical plane and arranged from top to bottom; the oblique support frame is assembled from four plane trusses and its cross section is rectangular, and the four plane trusses are connected by multiple The lower horizontal support frame is fastened and connected as a whole; the upper part of each diagonal support frame is provided with two lower distribution beams arranged in parallel on the left and right, and the lower distribution beam and the upper distribution beam are arranged vertically. All the lower distribution beams arranged on the upper part of the inclined support frame are arranged on the same horizontal plane and form a fixed platform for the upper distribution beam to be fixed, and the upper distribution beam is fixed on the fixed platform; the upper distribution beam There are working cable pulleys installed on the upper part for the hoisting of the working cables of the constructed arch bridge, and a plurality of cable saddles for fixing multiple main fixing cables are arranged in the upper middle part of the upper distribution beam, and the upper left and right sides of the upper distribution beam A cable pulley for the installation of the cable is respectively arranged, and both ends of the cable are fixed on the bridge abutment of the constructed long-span arch bridge.

The above-mentioned large-span arch bridge without support cable hoisting construction tower is characterized in that it also includes multiple horizontal connecting beams connected between the two oblique support frames, and the multiple horizontal connecting beams are all in the form of It is laid horizontally and it is laid from top to bottom.

The above-mentioned large-span arch bridge unsupported cable hoisting construction tower is characterized in that: the oblique support frame includes four oblique struts arranged in parallel, and the four oblique bridge struts are respectively arranged in a rectangular on the four vertices of the two adjacent inclined struts; all of the adjacent two inclined struts are fastened and connected as a whole through multiple oblique connecting rods, and the adjacent two inclined struts are connected to the multiple inclined struts between the two The oblique connecting rods form a planar truss.

The above-mentioned construction tower for long-span arch bridge without support cables is characterized in that: the plane truss is a Bailey truss.

The above-mentioned large-span arch bridge unsupported cable hoisting construction tower is characterized in that: the horizontal support frame is a rectangular connecting frame composed of four horizontal connecting rods, and the two ends of each horizontal connecting rod are respectively fixed Between two adjacent inclined struts.

The above-mentioned large-span arch bridge unsupported cable hoisting construction tower is characterized in that: a plurality of vertical support frames are located directly below the upper distribution beam and are arranged in parallel with the upper distribution beam, and the plurality of vertical support frames are all located directly below the upper distribution beam. The vertical support frame and the upper distribution beam are both arranged on the same vertical plane.

The above-mentioned large-span arch bridge unsupported cable hoisting construction tower is characterized in that: the structures of the plurality of vertical support frames are the same, and the vertical support frames include upper connecting rods, which are located on the upper connecting rods. The lower connecting rod directly below and the scissors brace connected between the upper connecting rod and the lower connecting rod, the scissors brace is composed of two oblique connecting rods arranged obliquely; the upper connecting rod, Both ends of the lower connecting rod and the oblique connecting rod are respectively fixed on the two oblique supporting frames.

The above-mentioned construction tower for long-span arch bridge without support and cable hoisting is characterized in that: the lower distribution beam and the upper distribution beam are both composed of two I-beams arranged side by side.

Compared with the prior art, the utility model has the following advantages:

1. Simple structure, reasonable design, convenient disassembly and assembly, and low input cost.

2. It is mainly composed of a herringbone bracket composed of two symmetrically arranged oblique support frames on the left and right, and a vertical support frame and a horizontal connecting beam connected between the two oblique support frames, and the oblique support frame consists of four planes Composed of trusses, it is not only easy to assemble, but also has a strong bearing capacity, which can meet the hoisting requirements of the hoisted long-span arch bridge.

3. A fixed platform composed of multiple lower distribution beams is set on the horizontal connecting beam, and the upper distribution beam is fixed on the fixed platform, and the working cable pulley, buckle cable pulley and the cable saddle installed on the fixed cable are all fixed on the upper distribution beam , not only the fixing and installation is simple and convenient, but also the installation position of the utility model can be accurately fixed through the main fixing cable and the buckle cable, so as to ensure the safety and smooth progress of the hoisting process.

4. It is easy to operate and has good use effect. Firstly, the supporting state of the utility model can be adjusted through two buckle cables, and after the adjustment is in place, it can be firmly fixed by the main fixing cable. Therefore, by adopting the utility model, the cable hoisting process of the long-span arch bridge can be easily completed, and the hoisting process is safe and reliable.

To sum up, the utility model has the advantages of simple structure, reasonable design, easy disassembly and assembly, and good use effect, which can meet the requirements for cable hoisting of large-span arch bridges, and the hoisting process is safe and reliable.

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

Fig. 1 is the reference diagram of the use state of the utility model.

Fig. 2 is a schematic diagram of the side structure of the utility model.

Explanation of reference signs:

1-1—oblique support frame; 1-2—vertical support frame; 1-3—horizontal support frame;

1-4—lower distribution beam; 1-5—horizontal connecting beam; 2—foundation platform;

3—working cable; 4—upper distribution beam; 5—working cable pulley;

6—the main fixed cable; 7—the buckle cable; 8—the saddle;

9—clasp pulley.

Detailed ways

As shown in Fig. 1 and Fig. 2, the utility model comprises a herringbone support composed of two symmetrically arranged oblique support frames 1-1 and an upper distribution beam 4 horizontally supported on the top of the herringbone support. The upper distribution beam 4 and the herringbone support are arranged on the same vertical plane. The structures of the two oblique support frames 1-1 are the same, and both of them are gradually inclined to the outside from top to bottom, and a plurality of vertical support frames 1-2 are passed between the two oblique support frames 1-1. Fastened and connected as one, the multiple vertical support frames 1-2 are arranged on the same vertical plane as the two oblique support frames 1-1 and arranged from top to bottom. The diagonal support frame 1-1 is assembled from four plane trusses with a rectangular cross section, and the four plane trusses are fastened and connected by a plurality of horizontal support frames 1-3 arranged from top to bottom as one. The upper part of each said inclined support frame 1-1 is provided with two left and right lower distribution beams 1-4 arranged in parallel, said lower distribution beams 1-4 and upper distribution beam 4 are vertically arranged, and All the lower distribution beams 1-4 arranged on the top of the inclined support frame 1-1 are arranged on the same horizontal plane and form a fixed platform for the upper distribution beam 4 to be fixed on the fixed platform. ; The upper distribution beam 4 is provided with a working cable pulley 5 for the installation of the working cable 3 for hoisting the constructed arch bridge, and the upper middle part of the upper distribution beam 4 is provided with a plurality of cables fixed by the multi-track main fixed cables 6 respectively. Saddle 8, and the top left and right sides of upper distribution beam 4 are respectively provided with a buckle pulley 9 for the installation of buckle cable 7, and the two ends of described buckle rope 7 are all fixed on the abutment of the large-span arch bridge of construction.

In this embodiment, the utility model also includes multiple horizontal connecting beams 1-5 connected between the two oblique support frames 1-1, the multiple horizontal connecting beams 1-5 are all arranged horizontally and It is arranged from top to bottom.

Moreover, the number of the horizontal connecting beams 1-5 is the same as the number of the vertical supporting frames 1-2, and the multiple horizontal connecting beams 1-5 are respectively located under the multiple vertical supporting frames 1-2, Two of each of the horizontal connecting beams 1-5 are respectively fixed on the two inclined support frames 1-1.

In this embodiment, the oblique support frame 1-1 is assembled from four plane trusses and its cross section is rectangular, and a plurality of horizontal support frames 1 arranged from top to bottom are passed between the four plane trusses. -3 fastening connection as a whole.

During actual installation, the working cable pulley 5 and the buckle cable pulley 9 are vertically arranged with the upper distribution beam 4.

In this embodiment, the abutment of the constructed long-span arch bridge is provided with an anchoring plate for fixing the buckle cables 7, and both of the two buckle cables 7 are fixed on the anchoring plate.

The two oblique support frames 1-1 are all supported on the base platform 2, and the base platform 2 is provided with mounting seats for the bottom of the two oblique support frames 1-1, and the mounting seats Fastened and fixed on the base platform 2. Moreover, the two oblique support frames 1-1 can move forward and backward on the mounting base.

During actual construction, the position of the utility model is adjusted by the fixed positions at two ends of the two buckle cables 7, and then the utility model is fixed by the main fixing cable 6. The plurality of main fixing cables 6 are arranged in parallel and their two ends are respectively fixed on the ground or on the bridge substructure of the constructed long-span arch bridge, and the plurality of main fixing cables 6 are all fixed on the cable saddle by cable clamps. 8 on. The calculated span of the constructed long-span arch bridge is above 100m.

In actual processing, the oblique support frame 1-1 includes four oblique struts arranged in parallel, and the four oblique bridge struts are respectively arranged on four vertices of a rectangle. The two adjacent inclined struts are fastened and connected as a whole through multiple oblique connecting rods, and the adjacent two inclined struts are connected with the multiple oblique connecting rods between them. The rods form a planar truss.

In this embodiment, the oblique support frame 1-1 is assembled from four plane trusses and its cross section is rectangular, and a plurality of horizontal support frames 1 arranged from top to bottom are passed between the four plane trusses. -3 fastening connection as a whole.

Moreover, the plane truss is a Bailey truss. In this embodiment, the transverse supporting frame 1-3 is a rectangular connecting frame composed of four transverse connecting rods, and the two ends of each transverse connecting rod are respectively fixed on two adjacent inclined struts.

In this embodiment, a plurality of the vertical support frames 1-2 are located directly below the upper distribution beam 4 and are arranged in parallel with the upper distribution beam 4, and a plurality of the vertical support frames 1-2 are connected to the upper distribution beam 4. The distribution beams 4 are all arranged on the same vertical plane.

Moreover, the structures of the plurality of vertical support frames 1-2 are the same, and the vertical support frames 1-2 include an upper connecting rod, a lower connecting rod positioned directly below the upper connecting rod, and a lower connecting rod connected to the upper connecting rod. The scissor brace between the connecting rod and the lower connecting rod, the scissor brace is composed of two obliquely arranged connecting rods. Both ends of the upper connecting rod, the lower connecting rod and the oblique connecting rod are respectively fixed on the two oblique supporting frames 1-1.

In this embodiment, the tower 1 further includes multiple horizontal connecting beams 1-5 connected between the two oblique support frames 1-1, and the multiple horizontal connecting beams 1-5 are all horizontal. Laid out and it is laid out from top to bottom.

Moreover, the number of the horizontal connecting beams 1-5 is the same as the number of the vertical supporting frames 1-2, and the multiple horizontal connecting beams 1-5 are respectively located under the multiple vertical supporting frames 1-2, Two of each of the horizontal connecting beams 1-5 are respectively fixed on the two inclined support frames 1-1.

In this embodiment, the lower distribution beams 1-4 and the upper distribution beam 4 are both composed of two I-beams arranged side by side.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (9)

1. a large-span arch bridge without support cable hoisting construction tower, is characterized in that: comprise the herringbone support that is made up of two oblique bracing frames (1-1) that are arranged symmetrically on the left and right and horizontal support on described herringbone The upper distribution beam (4) on the top of the glyph support, the upper distribution beam (4) and the herringbone support are arranged on the same vertical plane; the structures of the two oblique support frames (1-1) are identical and Both of them are gradually inclined to the outside from top to bottom, and the two oblique support frames (1-1) are tightly connected as a whole through a plurality of vertical support frames (1-2). The support frame (1-2) is arranged on the same vertical plane with the two described diagonal support frames (1-1) and it is arranged from top to bottom; the described diagonal support frame (1-1) consists of Four planar trusses are assembled and their cross sections are rectangular, and the four planar trusses are fastened and connected as a whole through a plurality of horizontal support frames (1-3) arranged from top to bottom; each of the inclined Two lower distribution beams (1-4) arranged in parallel on the left and right are arranged on the upper part of the support frame (1-1). The lower distribution beams (1-4) and the upper distribution beams (4) are vertically arranged. All the lower distributing beams (1-4) arranged on the top of the two inclined support frames (1-1) are arranged on the same horizontal plane and form a fixed platform for the upper distributing beam (4) to be fixed, and the upper distributing The beam (4) is fixed on the fixed platform; the upper distribution beam (4) is provided with a working cable pulley (5) installed on the working cable (3) for hoisting the constructed arch bridge, and the upper distribution beam (4 ) is provided with a plurality of cable saddles (8) for fixing by multiple main fixing cables (6) respectively, and the left and right sides of the upper distribution beam (4) are respectively provided with a cable saddle (7) for installation Buckle cable pulley (9), the two ends of described buckle cable (7) are all fixed on the bridge abutment of the large-span arch bridge of construction. 2. according to a kind of long-span arch bridge unsupported cable hoisting construction tower frame of claim 1, it is characterized in that: also comprise multiple roads that are connected between two described diagonal bracing frames (1-1) Horizontal connecting beams (1-5), multiple horizontal connecting beams (1-5) are arranged horizontally and arranged from top to bottom. 3. according to claim 1 or 2 described a kind of long-span arch bridge unsupported cable hoisting construction tower, it is characterized in that: described oblique support frame (1-1) comprises four oblique supports that are arranged in parallel The four inclined bridge struts are respectively arranged on the four vertices of a rectangle; the two adjacent inclined struts are fastened and connected as a whole by multiple oblique connecting rods, and the two adjacent A planar truss is composed of one of the oblique struts and multiple oblique connecting rods connected between them. 4. According to claim 1 or 2, a long-span arch bridge unsupported cable hoisting construction tower is characterized in that: said plane truss is a Bailey truss. 5. According to claim 1 or 2, a kind of long-span arch bridge unsupported cable hoisting construction tower, it is characterized in that: said transverse bracing frame (1-3) is a rectangle formed by four transverse connecting rods As for the connecting frame, both ends of each transverse connecting rod are respectively fixed between two adjacent inclined struts. 6. According to claim 1 or 2, a kind of long-span arch bridge unsupported cable hoisting construction tower is characterized in that: a plurality of said vertical support frames (1-2) are all located on the upper distribution beam (4 ) directly below and are all arranged in parallel with the upper distribution beam (4), and a plurality of the vertical support frames (1-2) and the upper distribution beam (4) are all arranged on the same vertical plane. 7. according to a kind of long-span arch bridge unsupported cable hoisting construction tower frame according to claim 6, it is characterized in that: the structures of a plurality of said vertical support frames (1-2) are all the same, and said vertical The support frame (1-2) comprises an upper connecting rod, a lower connecting rod positioned directly below the upper connecting rod and a scissors brace connected between the upper connecting rod and the lower connecting rod, and the scissors brace consists of two The road is composed of oblique connecting rods arranged obliquely; the two ends of the upper connecting rod, the lower connecting rod and the oblique connecting rod are respectively fixed on the two oblique supporting frames (1-1) superior. 8. according to claim 1 or 2 described a kind of long-span arch bridge unsupported cable hoisting construction tower, it is characterized in that: described lower distribution beam (1-4) and upper distribution beam (4) are all made of two It consists of two I-beams arranged side by side. 9. According to claim 1 or 2, a kind of long-span arch bridge unsupported cable hoisting construction tower, it is characterized in that: two said oblique support frames (1-1) are all supported on the foundation platform (2 ), and the base platform (2) is provided with mounting seats for the bottom of the two inclined support frames (1-1), and the mounting seats are fastened and fixed on the base platform (2) .