CN204793910U - Large -span cable testing bridge - Google Patents

Abstract

The utility model relates to a cable bridge, in particular to a large-span cable bridge, which belongs to the technical field. It comprises at least three successively connected bridge segment components, each bridge segment component is provided with a flange end face at both ends, and two adjacent bridge segment components are connected into one body through the flange end faces. The bridge segment assembly consists of four chords arranged parallel to each other, two of the four chords are located directly above the other two chords, between the upper two chords and the lower two chords Bottom web rod assemblies are provided between the rods, and side web rod assemblies are provided between the two chord rods on one side and the two chord rods on the other side. The utility model has a simple, compact and reasonable structure, can be quickly assembled on site, and shortens the existing construction period; the span is large, and at the same time, its own rigidity is large and the deflection is small, which ensures the construction quality and avoids damage to the site environment; the production cost is relatively low. Low, can create good economic and social benefits.

Description

Long-span cable tray

technical field

The utility model relates to a cable bridge, in particular to a large-span cable bridge, which belongs to the technical field.

Background technique

With the continuous development of social economy and the requirements of urban municipal planning, in order to adapt to the new development situation and the rigid demand for electricity, underground cable engineering has gradually become the main way of urban power transmission. However, for areas with dense river networks and developed traffic, cable channels are often blocked by rivers and roads, which brings great difficulties to the construction of power channels. At present, the general solution is to use horizontal pipe jacking (underground pipe gallery) and directional traction pipes to solve the problem. For small rivers, angle steel trusses are often used to pass through. However, there are different problems in the above methods.

The angle steel bridge (single span) has a small span (15-20 meters). In order to obtain sufficient rigidity, the geometric size of the angle steel bridge must be enlarged, which often produces a phenomenon that is higher than the road surface and the bridge surface and is not in harmony with the surrounding environment. At the same time, there are many splicing parts installed on-site for the angle steel bridge frame, the process is cumbersome, and the construction period is long, so it is not suitable for construction in heavy traffic sections. Due to the large number of components, it is easy to produce deviations in the process of processing and assembling, which will cause the deflection of the final bridge to exceed the standard, which will adversely affect the safety of power operation.

The underground directional traction pipe method has the problems of chaotic arrangement and rotation of pipelines, high engineering cost, instability of construction porosity, and many inconveniences in environmental protection, road traffic and planning coordination.

Contents of the invention

The purpose of the utility model is to overcome the above disadvantages, thereby providing a large-span cable bridge, which can be quickly assembled on site, shortens the existing construction period, and at the same time has a large rigidity and a small deflection to ensure the construction quality.

According to the technical solution provided by the utility model, the large-span cable bridge includes at least three bridge segment components connected in sequence, and the feature is that: each end of each bridge segment component is provided with a flange end face, and two adjacent bridges The segment components are connected into one body through the flange end faces; the bridge segment components include four chords arranged parallel to each other, two of the four chords are located directly above the other two chords, and the upper two chords are Bottom web rod assemblies are provided between the chords and between the two lower chords, and side web rod assemblies are provided between the two chords on one side and the two chords on the other side; The bottoms of the two outermost bridge segment assemblies among the at least three bridge segment assemblies are provided with a plurality of supporting bases; the bridge segment assemblies are provided with a plurality of cable supports along the length direction.

Further, the bottom web bar assembly includes a plurality of horizontally arranged bottom cross bars, one bottom inclined bar is arranged obliquely between every two bottom cross bars, and the plurality of bottom cross bars are evenly arranged.

Further, the flank bar assembly includes a plurality of vertically arranged side uprights, a side slant bar is arranged obliquely between every two side uprights, and a plurality of side uprights are evenly arranged.

Further, there are four supporting bases, which are evenly distributed.

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

The utility model has a simple, compact and reasonable structure, can be quickly assembled on site, and shortens the existing construction period; the span is large, and at the same time, its own rigidity is large and the deflection is small, which ensures the construction quality and avoids damage to the site environment; the production cost is relatively low. Low, can create good economic and social benefits.

Description of drawings

Fig. 1 is a front view of the utility model.

Fig. 2 is a top view of the utility model.

Fig. 3 is a sectional view of A-A in Fig. 2 .

Fig. 4 is a B-B sectional view in Fig. 2 .

Explanation of reference numerals: 1-bridge section assembly, 2-flange end face, 3-chord rod, 4-support base, 5-side web rod assembly, 5.1-side vertical rod, 5.2-side inclined rod, 6-bottom Web bar assembly, 6.1-bottom cross bar, 6.2-bottom slanting bar, 7-cable support.

Detailed ways

Below the utility model will be further described in conjunction with the embodiment in the accompanying drawing:

As shown in Figures 1 to 4, the utility model mainly includes at least three successively connected bridge segment components 1, each end of each bridge segment component 1 is provided with a flange end face 2, and two adjacent bridge segments The assembly 1 is connected as a whole through the flange end face 2 .

The bridge segment assembly 1 includes four chords 3 arranged parallel to each other, and two chords 3 of the four chords 3 are located directly above the other two chords 3 . The bottom web member 6 is arranged between the two chords 3 on the top and the two chords 3 on the bottom, the two chords 3 on one side and the two chords 3 on the other side Side web rod assemblies 5 are arranged between them.

The bottom web bar assembly 6 includes a plurality of horizontally arranged bottom cross bars 6.1, and a bottom inclined bar 6.2 is arranged obliquely between every two bottom cross bars 6.1. The plurality of bottom cross bars 6.1 are uniformly arranged.

The side web bar assembly 5 includes a plurality of vertically arranged side vertical bars 5.1, and a side inclined bar 5.2 is arranged obliquely between every two side vertical bars 5.1. The plurality of side poles 5.1 are evenly arranged.

The bottoms of the two outermost bridge segment assemblies 1 among the at least three bridge segment assemblies 1 are provided with a plurality of support bases 4. When in use, the utility model is arranged across the river body, and the outermost The two bridge segment assemblies 1 need to be fixed on the river bank, and a plurality of support bases 4 are used to realize stable support. In the embodiment shown in FIG. 2 , there are four supporting bases 4 and they are evenly distributed.

A plurality of cable brackets 7 are arranged in the bridge segment assembly 1 along the length direction, and the cables are fixed on the cable brackets 7 by hoops.

The working principle of the utility model is: the bridge frame of the utility model can be transported in sections, and can be quickly assembled after being transported to the site. The utility model has the advantages of large span, small construction impact and short engineering period. The utility model not only saves the construction period and investment, but also avoids damage to the site by other construction methods, and achieves all the expected functions of the project.

Claims (4)

1. a large span cable testing bridge, comprise at least three crane span structure segmented assemblies (1) connected successively, it is characterized in that: the two ends of each crane span structure segmented assemblies (1) are respectively equipped with end face of flange (2), adjacent two crane span structure segmented assemblies (1) are linked into an integrated entity by end face of flange (2); Crane span structure segmented assemblies (1) comprises the chord member (3) of four settings parallel to each other, two chord members (3) in four chord members (3) are positioned at directly over two other chord member (3), be equipped with end web member assembly (6) between two chord members (3) between two chord members (3) above being positioned at and below being positioned at, be positioned between two chord members (3) of side and two chord members (3) being positioned at opposite side and be equipped with flank bar assembly (5); The bottom being positioned at outermost two crane span structure segmented assemblies (1) in described at least three crane span structure segmented assemblies (1) is provided with multiple base for supporting (4); Multiple cable bearer (7) is provided with along its length in crane span structure segmented assemblies (1).

2. large span cable testing bridge as claimed in claim 1, it is characterized in that: described end web member assembly (6) comprises the end cross bar (6.1) of multiple horizontally set, be obliquely installed brace (6.2) at the bottom of between cross bar (6.1) at the bottom of every two, cross bar of multiple ends (6.1), are evenly arranged.

3. large span cable testing bridge as claimed in claim 1, it is characterized in that: described flank bar assembly (5) comprises the edge-on bar (5.1) of multiple vertical setting, be obliquely installed a skew back bar (5.2) between every two edge-on bars (5.1), multiple edge-on bar (5.1) is evenly arranged.

4. large span cable testing bridge as claimed in claim 1, is characterized in that: described base for supporting (4) is four, and is uniformly distributed.