CN115288035A - Sliding device for ultra-wide separated steel box girder of extra-large cable-stayed bridge - Google Patents

Abstract

The invention discloses a sliding device of an ultra-wide separating steel box girder of an extra-large cable-stayed bridge, which is characterized by comprising the following components: the device comprises a support structure, a steel longitudinal beam, a sliding shoe and a placing pier; the slipper includes: the device comprises a steel rail, a jacking oil cylinder, a lateral oil cylinder, a distribution beam, a jacking oil cylinder and a rail clamping device; the jacking oil cylinder and the lateral oil cylinder are fixedly arranged on the sliding shoe through a bracket; the lateral oil cylinders are arranged on two sides of the jacking oil cylinder and are perpendicular to the jacking oil cylinder; the pushing oil cylinder is obliquely arranged on one outer side of the sliding shoe and is fixedly connected with the sliding shoe; the rail clamping device is arranged at the top end of the pushing oil cylinder and is fixedly connected with the push rod; the distribution beam is arranged on the jacking oil cylinder. Compared with the prior art, the ultra-wide separation type steel box girder has the advantages of simple structure, low labor intensity, economy, high efficiency, safety and good application prospect, and can realize the high-efficiency, accurate, safe and synchronous sliding erection of the ultra-wide separation type steel box girder.

Description

A sliding device for super-wide separated steel box girders of extra-large cable-stayed bridges

technical field

The invention relates to the technical field of steel structure bridge construction, in particular to a sliding device for an ultra-wide separated steel box girder of an extra-large cable-stayed bridge.

Background technique

The extra-large double-tower cable-stayed bridge consists of a side span and a main span. The steel box girder of the side span is located on the shore and has a long distance. Due to the large section and heavy weight of the steel box girder, it is generally transported by water. When the water level is shallow, the floating crane cannot be hoisted. The prefabricated steel box girder parts are used. The bridge position needs to be erected with a large amount of brackets. Therefore, it is generally not suitable to use a large number of loose parts to install the construction method. In order to ensure the manufacturing quality of the steel box girder and complete the erection of the steel box girder, the construction of the sliding method is a new solution.

The sliding device in the prior art adopts a sliding shoe equipped with a jacking cylinder, the steel beam is placed on the sliding shoe, and the hoist is used as a traction device to drag the steel beam to slide, so that the steel beam is pulled forward, and the device cannot quickly realize the beam The linear and position adjustment of the body, the stability and synchronization of the sliding process are poor, and the accuracy of the sliding distance is low.

Contents of the invention

The object of the present invention is to provide a sliding device for a super-wide separated steel box girder of a super-large cable-stayed bridge in view of the deficiencies in the prior art. The horizontal, vertical and elevation adjustment of the box girder, the sliding construction of the steel box girder integrated with the jacking and falling beam, can quickly adjust the position and line shape of the steel box girder, and the sliding device is clamped with the sliding track by a hydraulic self-locking mechanism , the pushing reaction force of the steel box girder forward is internal force, the horizontal reaction force of the steel box girder support structure is small, greatly reducing the influence of the horizontal force on the support, easy to use, and the amount of support erected at the bridge position is small, shortening the on-site installation period , less affected by adverse environments such as strong winds and rain, the welding quality of steel box girders has been further guaranteed, ensuring the efficient and high-quality erection of ultra-wide separated steel box girders for extra-large cable-stayed bridges, and has a good application prospect.

The specific technical solution for realizing the object of the present invention is: a sliding device for an ultra-wide separated steel box girder of a super-large cable-stayed bridge, which is characterized in that the sliding device includes: a supporting structure, a steel longitudinal beam, a sliding shoe and a shelving pier; The steel longitudinal beam is arranged on the supporting structure and is rigidly connected with the supporting structure; the shelving pier is arranged on the supporting structure on both sides of the steel longitudinal beam and is rigidly connected with the supporting structure; the sliding shoe includes: steel rail, Jacking oil cylinder, side oil cylinder, distribution beam, pushing oil cylinder and rail clamp; the rail is set on the steel longitudinal beam and clamped by the clamp; the slide shoe is set on the rail, and the rail under the same slide shoe according to The sliding shoe structure is arranged in parallel; the jacking cylinder is arranged on the sliding shoe; the lateral oil cylinder is arranged on both sides of the jacking cylinder by a bracket, and is perpendicular to the jacking cylinder, and the bracket is respectively connected to the jacking cylinder and the sliding shoe It is fixedly connected by bolts; the push cylinder is arranged obliquely on an outer side of the slide shoe, and is fixedly connected with the slide shoe; the rail clamp is arranged on the top of the push cylinder, and is fixedly connected with the push rod; The distribution beam is arranged on the jacking cylinder; the shelving pier is arranged on both sides of the sliding shoe, and is welded with the support structure, and is used for the falling beam of the steel box girder to realize the removal of the sliding device.

The jacking cylinder, lateral cylinder and pushing cylinder adopt hydraulic synchronous control to realize the forward movement, alignment adjustment and beam drop of the steel box girder.

Compared with the prior art, the present invention has ultra-wide separated steel box girder with efficient, accurate, safe and synchronous sliding erection, simple structure, convenient use, less support for bridge erection, shortening the on-site installation period, and realizing cable-staying The bridge side-span separated steel box girder is hoisted on the river side and slides synchronously to the shore side, which can precisely adjust the lateral position of the beam section, so that the beam is accurately connected with the boxes on both sides, and solves the problem that the beam section passes through the main tower. The steel box girders and beams on both sides are hoisted by cranes. No large-scale lifting equipment is required on the shore side, which can quickly adjust the position and line shape of the beam section, shortening the service life of large-scale lifting equipment, and the line shape adjustment efficiency of the beam section is high. After the section slides to the design position, it falls on the shelving pier, which improves the utilization rate of the sliding device, has low labor intensity, is economical, efficient, and safe, and has a good application prospect.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a side view of Fig. 1;

Fig. 3 is embodiment figure;

Fig. 4 is a side view of Fig. 3 .

Detailed ways

Referring to Figures 1-2, the present invention includes: a support structure 1, a steel longitudinal beam 2, a sliding shoe 3 and a resting pier 4; the steel longitudinal beam 2 is arranged on the support structure 1 and is rigidly connected to the support structure 1; The shelving pier 4 is set on the supporting structure 1 on both sides of the steel longitudinal beam 2, and is rigidly connected with the supporting structure 1; the sliding shoe 3 includes: a steel rail 31, a jacking cylinder 33, a lateral cylinder 34, a distribution beam 35. Push cylinder 36 and rail clamp 37; the rail 31 is set on the steel longitudinal beam 2 and is clamped by the pallet; the sliding shoe 3 is set on the rail 31; the jacking cylinder 33 is set on the slide On the shoe 3; the lateral oil cylinder 34 is arranged on both sides of the jacking oil cylinder 33 by a bracket, the lateral oil cylinder 34 and the jacking oil cylinder 33 are vertically arranged, and the bracket is respectively connected with the jacking oil cylinder 33 and the sliding shoe 3 by bolts; The push cylinder 36 is arranged obliquely on an outer side of the slide shoe 3, and is fixedly connected with the slide shoe 3; the rail clamp 37 is arranged on the top of the push cylinder 36, and is fixedly connected with the push rod; The distribution beam 35 is arranged on the jacking cylinder 33; the shelving pier 4 is arranged on both sides of the sliding shoe 3, and is welded with the supporting structure 1, and is used for the falling beam of the steel box girder to realize the removal of the sliding device; The jacking oil cylinder 33, the lateral oil cylinder 34 and the pushing oil cylinder 36 adopt hydraulic synchronous control to realize the forward movement, alignment adjustment and beam drop of the steel box girder.

The present invention will be further described in detail through specific implementation below.

Example 1

Referring to Figures 3-4, the sliding device of the present invention is arranged on the lower part of the steel box girder 6, the steel rail 31 is arranged on the steel longitudinal beam 2 and pressed by the clamping plate, the sliding shoe 3 is arranged on the steel rail 31, and the same sliding shoe 3. The lower rails 31 are arranged in parallel according to the structure of the slide shoe 3. In this embodiment, there are two sliding devices under the steel box girder 6, and the connection between the distribution beam 35 and the distribution beam 35 and between the steel box girder 6 and the distribution beam 35 is carried out through the tension structure 5, so as to better realize The synchronous sliding of the steel box girder 6; the tension structure 5 is tensioned and fastened by threaded steel 51; The falling beam of the box girder 6 realizes the removal of the sliding device 3, so that the subsequent beam body can slide cyclically.

The above is only a further description of the present invention, and is not intended to limit this patent. All equivalent implementations of the present invention should be included in the scope of claims of this patent.

Claims (2)

1. The utility model provides a slide device of super wide disconnect-type steel box girder of super cable-stay bridge which characterized in that this slide device includes: the device comprises a support structure, a steel longitudinal beam, a sliding shoe and a placing pier; the steel longitudinal beam and the placing pier are arranged on the supporting structure and are in rigid connection with the supporting structure; the slipper includes: the device comprises a steel rail, a jacking oil cylinder, a lateral oil cylinder, a distribution beam, a jacking oil cylinder and a rail clamping device; the steel rail is arranged on the steel longitudinal beam and is clamped and pressed by the clamping plate; the sliding shoes are arranged on the steel rails; the jacking oil cylinder is arranged on the sliding shoe; the lateral oil cylinders are arranged on two sides of the jacking oil cylinder through brackets and are perpendicular to the jacking oil cylinder, and the brackets are fixedly connected with the jacking oil cylinder and the sliding shoes through bolts; the pushing oil cylinder) is obliquely arranged on one outer side of the sliding shoe and is fixedly connected with the sliding shoe; the rail clamping device is arranged at the top end of the pushing oil cylinder and is fixedly connected with the push rod; the distribution beam is arranged on the jacking oil cylinder; the shelving piers are arranged on two sides of the sliding shoe and welded with the supporting structure, and are used for falling the steel box girder and moving out the sliding device.

2. The sliding device of the ultra-wide separating steel box girder of the extra-large cable-stayed bridge according to claim 1, wherein the jacking cylinder, the lateral cylinder and the jacking cylinder are hydraulically and synchronously controlled to realize forward movement, linear adjustment and girder falling of the steel box girder.

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