CN209836813U

CN209836813U - Limiting device for steel guide cable pipe of suspension bridge

Info

Publication number: CN209836813U
Application number: CN201920443382.3U
Authority: CN
Inventors: 金强; 郭登峰; 孙纯; 于周旭
Original assignee: China MCC17 Group Co Ltd
Current assignee: China MCC17 Group Co Ltd
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2019-12-24
Anticipated expiration: 2029-04-03

Abstract

The utility model relates to a limiting device of a steel guide cable pipe of a suspension bridge, which belongs to an auxiliary device for bridge construction and is characterized in that the limiting device also comprises a limiting bracket and an elongated steel bar, the limiting bracket is uniformly arranged on the outer pipe wall of the lower segment of the steel guide cable pipe along the circumference, the limiting bracket is in an equilateral or isosceles triangle shape, the limiting bracket is in an oblique outward extending shape, namely, a sharp corner end at the upper part of the limiting bracket is fixedly connected with the outer pipe wall of the steel guide cable pipe, and two sharp corners at the lower part are both away from the outer pipe wall of the steel guide cable pipe, in addition, two sharp corners at the lower part of each limiting bracket are both fixedly provided with the elongated steel bar which extends downwards and the lower end section of which is in a hook shape, by using the limiting device, the phenomenon that the steel guide cable pipe is laterally extruded and flows into the steel guide cable pipe in the integral pouring process of a main beam bottom plate and a box beam is avoided, the defect that the bottom port position of the steel guide cable pipe, the position precision of the steel guide cable pipe is ensured, and the construction quality and efficiency are improved.

Description

Limiting device for steel guide cable pipe of suspension bridge

Technical Field

The utility model belongs to the auxiliary device of bridge construction specifically is a stop device who relates to a suspension bridge steel cable guide pipe.

Background

In the suspension bridge work progress, steel guide cable pipe is pre-buried in the inside of girder, and suspension bridge's jib is connected with the cable clip and is passed through steel guide cable pipe, jib stretch-draw back, and the anchor head of jib just stretches out steel guide cable pipe, but a large amount of construction experience show: because the steel guide cable pipe is pre-buried in advance, after the main beam concrete is poured, the lower pipe orifice of the steel guide cable pipe is easy to displace, the verticality of the steel guide cable pipe is reduced, the tensioning stress of a subsequent suspender is greatly influenced, and the construction quality and the construction efficiency are reduced.

Disclosure of Invention

The utility model aims at providing a stop device of suspension bridge steel cable pipe, it is rational in infrastructure not only, convenient operation, use safe and reliable guarantees moreover that steel cable pipe does not produce the displacement at the concrete placement in-process of girder, guarantees the straightness that hangs down of steel cable pipe, improves the efficiency of construction, practices thrift construction cost.

The purpose of the utility model is realized like this: the utility model provides a stop device (being short for stop device) of suspension bridge steel guide cable pipe, includes the steel guide cable pipe, and this steel guide cable pipe is the straight steel pipe of vertical circle of placing, characterized by: the limiting device of the steel guide cable pipe of the suspension bridge also comprises a limiting bracket and lengthened steel bars, the limiting bracket is uniformly arranged on the circumference of the outer pipe wall of the lower section of the steel guide cable pipe, and preferably, four limit brackets are uniformly distributed on the circumference of the outer pipe wall of the lower section of the steel guide cable pipe, the limit brackets are reinforcing steel bar bending pieces in an equilateral or isosceles triangle shape, the limiting bracket is in an obliquely outward extending shape (namely, one sharp corner end at the upper part of the limiting bracket is fixedly connected with the outer pipe wall of the steel guide cable pipe, and two sharp corners at the lower part of the limiting bracket are both separated from the outer pipe wall of the steel guide cable pipe), in addition, two sharp corners at the lower part of each limiting bracket are fixedly provided with lengthened steel bars which extend downwards and have hook-shaped lower end sections, the limiting bracket can be made of a steel bar with the diameter of 28 mm, and the lengthened steel bar can be made of a steel bar with the diameter of 16 mm.

When the limiting device is used, firstly, the bottom edge reinforcing steel bars (namely the transverse bars or the longitudinal bars of the limiting bracket) of the limiting brackets are correspondingly connected with the transverse and longitudinal main bars on the main beam to realize the positioning of the steel guide cable pipes, so that the lengthened reinforcing steel bars all extend out of the bottom template of the main beam, the reinforcing steel bar holes on the template are sealed by foam rubber, then the concrete of the main beam is poured, after the strength of the concrete of the main beam reaches the form removal strength, the lengthened reinforcing steel bars exposing the bottom template are cut, and the limiting brackets are kept in the main beam.

The utility model has the advantages that: by using the limiting device, the phenomenon that the steel guide cable pipe is laterally extruded and flows into the steel guide cable pipe in the integral pouring process of the main beam bottom plate and the box girder is avoided, the defect that the bottom opening position of the steel guide cable pipe generates displacement after the concrete of the main beam is poured is overcome, the position precision of the steel guide cable pipe is ensured, the construction quality and efficiency are improved, and the limiting device plays an important role in the installation and tensioning stress of a subsequent suspender.

The utility model provides a stop device of suspension bridge steel cable pipe, it is rational in infrastructure not only, convenient operation, use safe and reliable guarantees moreover that steel cable pipe does not produce the displacement at the concrete placement in-process of girder, guarantees the straightness that hangs down of steel cable pipe, has improved the efficiency of construction, has practiced thrift construction cost.

The present invention provides a limiting device for a steel cable guide pipe of a suspension bridge, which is further described with reference to the accompanying drawings and embodiments.

Drawings

Fig. 1 is a schematic perspective view of a limiting device for a steel cable guide pipe of a suspension bridge according to the present invention.

In fig. 1: 1. limiting bracket 2, lengthened steel bar 3 and steel guide cable pipe

Detailed Description

As can be seen from fig. 1: the utility model provides a stop device (being short for stop device) of suspension bridge steel guide cable pipe, includes steel guide cable pipe 3, and this steel guide cable pipe 3 is the straight steel pipe of vertical round of placing, characterized by: the limiting device of the steel guide cable pipe of the suspension bridge further comprises a limiting bracket 1 and lengthened steel bars 2, wherein the limiting bracket 1 is uniformly arranged on the circumference of the outer pipe wall of the lower section of the steel guide cable pipe 3, and preferably four limiting brackets 1 are uniformly arranged on the circumference of the outer pipe wall of the lower section of the steel guide cable pipe 3, the limiting bracket 1 is a steel bar bending piece in an equilateral or isosceles triangle shape, the limiting bracket 1 extends outwards in an oblique direction (namely, one sharp corner end at the upper part of the limiting bracket 1 is fixedly connected with the outer pipe wall of the steel guide cable pipe 3, two sharp corner parts at the lower part of the limiting bracket 1 are separated from the outer pipe wall of the steel guide cable pipe 3), in addition, the lengthened steel bars 2 which extend downwards and have hook-shaped lower end sections are fixedly arranged at two sharp corner parts at the lower part of each limiting bracket 1, and the limiting bracket 1 can be made of the steel bars with the diameter of 28 mm, the lengthened steel bar 2 can be made of a steel bar with the diameter of 16 mm.

When the limiting device is used, firstly, the bottom edge steel bars (namely the transverse bars or the longitudinal bars on the limiting support 1) of the limiting support 1 are correspondingly connected with the transverse and longitudinal main bars on the main beam, so that the steel guide cable pipes 3 are positioned, the lengthened steel bars 2 all extend out of the bottom template of the main beam, the steel bar holes on the template are sealed by foam rubber, then the concrete of the main beam is poured, after the strength of the concrete of the main beam reaches the stripping strength, the lengthened steel bars 2 exposing the bottom template are cut, the limiting support 1 is kept in the main beam, the verticality of the steel guide cable pipes is ensured, the construction efficiency is improved, and the construction cost is saved.

Claims

1. The utility model provides a stop device of suspension bridge steel guide cable pipe, includes steel guide cable pipe (3), and this steel guide cable pipe (3) are the straight steel pipe of vertical circle of placing, characterized by: this stop device of suspension bridge steel wire pipe still includes spacing support (1) and extension bar (2) the outer pipe wall of the hypomere of steel wire pipe (3) on the circumference equipartition set up spacing support (1), spacing support (1) be equilateral or isosceles triangle's reinforcing bar piece of bending, this spacing support (1) is the outside overhang form of slant promptly a closed angle end on the upper portion of spacing support (1) and the outer pipe wall fixed connection of steel wire pipe (3), and two closed angle portions of spacing support (1) lower part all leave the outer pipe wall of steel wire pipe (3), in addition, each two closed angle portions of the lower part of spacing support (1) all fixed set up extension bar (2) that downwardly extending and lower extreme section are for colluding the shape.

2. The limiting device of the steel guide cable pipe of the suspension bridge according to claim 1, characterized in that four limiting brackets (1) are uniformly arranged on the outer pipe wall of the lower section of the steel guide cable pipe (3) in a circumferential manner.

3. The limiting device of the steel cable guide pipe of the suspension bridge according to claim 1, wherein the limiting bracket (1) is made of steel bars with the diameter of 28 mm.

4. A spacing device for a steel fairlead of a suspension bridge according to claim 1, characterized in that the elongated reinforcement (2) is made of a reinforcement with a diameter of 16 mm.