CN217678547U

CN217678547U - Large-span steel trestle structure

Info

Publication number: CN217678547U
Application number: CN202221865107.9U
Authority: CN
Inventors: 王佳; 彭浩; 张德长; 胡雪峰; 曾金河; 刘含
Original assignee: China Railway 11th Bureau Group Co Ltd; First Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Current assignee: China Railway 11th Bureau Group Co Ltd; First Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-10-28
Anticipated expiration: 2032-07-19

Abstract

The utility model relates to a landing stage construction technical field, concretely relates to large-span steel landing stage structure, include: 2 bearing bridge abutments arranged at intervals; the Bailey sheet beams are arranged on two sides of the 2 bearing bridge abutments and connected with the 2 bearing bridge abutments, and the bottoms of the Bailey sheet beams on the 2 sides are connected together through flower stands; and the transverse distribution beams are welded on the upper surfaces of the lower chords of the bailey pieces at the bottoms of the bailey piece beams and are uniformly distributed. The longitudinal distribution beams are welded on the tops of the transverse distribution beams, and two ends of the longitudinal distribution beams are fixed on the bearing bridge abutment at the corresponding position and are uniformly distributed; and the bridge deck steel plate is paved on the upper surface of the longitudinal distribution beam and is fixed with the longitudinal distribution beam. The utility model reduces the steel pipe pile with complex construction and long time consumption, replaces the steel pipe pile with the double-layer Bailey sheet beam, reduces the construction period and the engineering amount, lays the transverse distribution beam and the longitudinal distribution beam simultaneously, increases the strength of the bridge deck, and ensures the bearing capacity of the steel trestle; and a space is reserved below the steel trestle structure, so that other traffic equipment can conveniently pass through the space.

Description

Large-span steel trestle structure

Technical Field

The utility model relates to a landing stage construction technical field, concretely relates to large-span steel landing stage structure.

Background

In recent years, with the vigorous construction of urban infrastructure in China, bridges are built for one of the most important traffic engineering, a batch of large-span river-crossing and sea-crossing bridge traffic is developed successively, with the increase of bridge span, the construction difficulty is increased, the construction complexity is higher and higher, and the temporary steel structure trestle plays an especially important role in the construction process of the large-span bridge. The trestle is a building shaped like a bridge, and can be convenient for the transportation of personnel, materials and mechanical equipment by erecting a temporary trestle, so that the overwater construction is changed into land construction, and the effects of reducing the engineering construction difficulty and accelerating the construction progress are achieved. A trestle for bridge construction is also disclosed in the prior art, for example, application No. CN202023163340.6 discloses a trestle structure for bridge pier construction; application number CN202120640724.8 discloses an assembled aquatic steel trestle structure and the like. At present, during steel trestle construction, generally adopt the steel-pipe pile as the support, at the top welding shaped steel of steel-pipe pile as girder frame, regard as the support with horizontal brace and diagonal brace between the steel-pipe pile, install bailey roof beam and bridge etc. on shaped steel girder frame, just a steel trestle is preliminary built, whole work load is big in the work progress, especially during the steel trestle construction that the span is big, in order to increase the intensity of its each side, can increase the quantity of steel-pipe pile and guarantee the bearing capacity of steel trestle, make steel trestle construction degree of difficulty increase etc..

The Bailey sheet beam is a structure assembled by Bailey sheets, and a plurality of flower windows are used as connecting members between 2 Bailey sheets which are arranged side by side and are fixed by bolts. The bailey piece comprises an upper chord, a lower chord and other components connecting the upper chord and the lower chord.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

Disclosure of Invention

An object of the utility model is to provide a large-span steel trestle structure, its mode through setting up bearing abutment and increase beili thunder piece reduces the setting of steel-pipe pile, when guaranteeing bridge floor intensity, has reduced the construction degree of difficulty, has shortened construction cycle.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a large-span steel trestle structure comprises:

2 bearing bridge abutments arranged at intervals;

the Bailey sheet beams are arranged on two sides of the 2 bearing bridge abutments and connected with the 2 bearing bridge abutments, and the bottoms of the Bailey sheet beams on the 2 sides are connected together through flower stands;

a plurality of uniformly distributed transverse distribution beams welded on the upper surface of the lower chord of the Bailey sheet at the bottom of the Bailey sheet beam;

the longitudinal distribution beams are welded on the tops of the transverse distribution beams, and two ends of the longitudinal distribution beams are fixed on the bearing bridge abutment at the corresponding position and are uniformly distributed;

and the bridge deck steel plate is paved on the upper surface of the longitudinal distribution beam and is fixed with the longitudinal distribution beam.

Preferably, 2 layers of Bailey sheet beams are arranged above and below the Bailey sheet beams, and the 2 layers of Bailey sheet beams are fixedly connected; two ends of the transverse distribution beam extend out of the Bailey sheet beam at the 2 side; fixing seats are fixed at two ends of the transverse distribution beam, a first inclined strut and a second inclined strut are arranged on the fixing seats, and the other end of the first inclined strut is hinged with the Bailey sheet beam on the upper layer; and the other end of the second inclined strut is hinged with the Bailey sheet beam positioned at the lower layer.

Preferably, an embedded part corresponding to the Bailey sheet beam is embedded in the bearing bridge abutment, and the bottom of the Bailey sheet beam is fixed on the embedded part.

Preferably, a limiting strip is fixed on the outer side of the transverse distribution beam on the bearing bridge abutment and attached to the outer side of the transverse distribution beam.

Preferably, the transverse distribution beam and the longitudinal distribution beam are both I-shaped steel.

Preferably, the inclination of the deck steel plate is 4 °.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model reduces the steel pipe pile with complex construction and long time consumption, and is replaced by the double-layer Bailey sheet beam, thereby reducing the construction period and the engineering amount, saving the cost, laying the transverse distribution beam and the longitudinal distribution beam simultaneously, increasing the strength of the bridge deck, and ensuring the bearing capacity of the steel trestle; and a space is reserved below the steel trestle structure, so that other traffic equipment can conveniently pass through the space.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a top view of the connection of the Bailey truss and the pergola of FIG. 1;

FIG. 3 is a cross-sectional view of the load-bearing abutment of FIG. 1 removed;

FIG. 4 is an enlarged view of a portion of FIG. 1 at A;

description of the main reference numerals:

100. a load-bearing abutment; 101. embedding parts; 102. a limiting strip;

200. a Bailey sheet beam; 201. flower stand;

300. a transverse distribution beam; 301. a fixed seat; 302. a first diagonal brace; 303. a second diagonal brace;

400. a longitudinal distribution beam;

500. bridge deck steel sheet.

Detailed Description

The technical solution of the present invention is described in detail and completely below.

Examples

Referring to fig. 1-4, a large-span steel trestle structure comprises:

2 bearing abutments 100 are arranged at intervals, the bearing abutments 100 are reinforced concrete abutments, and the lower ends of the bearing abutments are embedded into the ground;

the bei Lei Pianliang is arranged on two sides of the 2 bearing bridge abutments 100 and connected with the 2 bearing bridge abutments 100, and the bottoms of the bei lei sheet beams 200 on the 2 sides are connected together through the flower stand 201; in this embodiment, the bailey piece beam 200 is arranged in the following manner: an embedded part 101 corresponding to the Bailey sheet beam 200 is embedded in the bearing abutment 100, and the bottom of the Bailey sheet beam 200 is fixed on the embedded part 101;

the transverse distribution beams 300 are welded on the upper surfaces of the lower chords of the Bailey pieces at the bottoms of the Bailey pieces beams 200 and are uniformly distributed, and the transverse distribution beams 300 are I-shaped steel;

a plurality of evenly distributed longitudinal distribution beams 400 welded to the top of the transverse distribution beam 300 and having both ends fixed to the bearing abutment 100 at the corresponding positions, the longitudinal distribution beams 400 being i-beams;

and a deck steel plate 500 laid on and fixed to the upper surface of the longitudinal distribution beam 400, the deck steel plate 500 having an inclination of 4 °.

In this embodiment, 2 layers of the bailey sheet beams 200 are arranged up and down, and the 2 layers of the bailey sheet beams 200 are fixedly connected; both ends of the transverse distribution beam 300 extend from the 2-side beret beam 200; fixing seats 301 are fixed at two ends of the transverse distribution beam 300, a first inclined strut 302 and a second inclined strut 303 are arranged on the fixing seats 301, and the other end of the first inclined strut 302 is hinged with the Bailey sheet beam 200 at the upper layer; the other end of the second diagonal brace 303 is hinged to the lower bailey piece beam 200.

In addition, in this embodiment, the limiting strips 102 are fixed on the outer sides of the transverse distribution beams 300 on the load-bearing abutment 100, and the limiting strips 102 are attached to the outer sides of the transverse distribution beams 300.

The principle of the steel trestle structure in the embodiment is briefly explained as follows:

when the bridge is erected, firstly setting a bearing abutment 100, and embedding an embedded part 101 on the bearing abutment 100; the two sides of the bearing abutment 100 are provided with the Bailey sheet beams 200, 2 layers of Bailey sheet beams 200 are arranged up and down, and the 2 layers of Bailey sheet beams 200 are welded or fixedly connected by external ropes; uniformly laying transverse distribution beams 300 on the upper surface of the lower chord of the Bailey sheet at the bottom of the Bailey sheet beam 200, welding the transverse distribution beams 300 to the Bailey sheet beam 200, and then uniformly laying longitudinal distribution beams 400 on the transverse distribution beams 300 and welding the longitudinal distribution beams with the transverse distribution beams 300; and then paving a bridge deck steel plate 500.

In this embodiment, in order to prevent the bailey piece beam 200 from collapsing, a fixing base 301 is further provided on the transverse distribution beam 300, and a first diagonal brace 302 and a second diagonal brace 303 for supporting the bailey piece beam 200 are provided on the fixing base 301.

The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a large-span steel trestle structure which characterized in that includes:

2 bearing bridge abutments arranged at intervals;

the transverse distribution beams are welded on the upper surfaces of the lower chords of the bailey pieces at the bottoms of the bailey piece beams and are evenly distributed;

2. The large-span steel trestle structure according to claim 1, wherein 2 layers of Bailey sheet beams are arranged above and below the Bailey sheet beams, and the 2 layers of Bailey sheet beams are fixedly connected;

two ends of the transverse distribution beam extend out of the Bailey sheet beam at the 2 side; fixing seats are fixed at two ends of the transverse distribution beam, a first inclined strut and a second inclined strut are arranged on the fixing seats, and the other end of the first inclined strut is hinged with the Bailey sheet beam on the upper layer; and the other end of the second inclined strut is hinged with the Bailey sheet beam positioned at the lower layer.

3. The large-span steel trestle structure according to claim 1, wherein an embedded part corresponding to the Bailey piece beam is embedded in the bearing abutment, and the bottom of the Bailey piece beam is fixed on the embedded part.

4. The large-span steel trestle structure according to claim 1, characterized in that a limiting strip is fixed on the outer side of the transverse distribution beam on the bearing abutment, and the limiting strip is attached to the outer side of the transverse distribution beam.

5. The large span steel trestle structure of claim 1, wherein the transverse and longitudinal distribution beams are h-section steel.

6. The large span steel trestle structure of claim 1, characterised in that the inclination of the deck steel plates is 4 °.