CN103510465A

CN103510465A - Slightly-arched seam crossing type bridge continuous seam structure

Info

Publication number: CN103510465A
Application number: CN201210220420.1A
Authority: CN
Inventors: 周如明; 马骉; 夏平; 周偲
Original assignee: Shanghai Shenji Traffic Science & Technology Co Ltd
Current assignee: Shanghai Shenji Traffic Science & Technology Co Ltd
Priority date: 2012-06-29
Filing date: 2012-06-29
Publication date: 2014-01-15

Abstract

The invention relates to a slightly-arched seam crossing type bridge continuous seam structure. The slightly-arched seam crossing type bridge continuous seam structure comprises beams, supports and a pavement layer. The slightly-arched seam crossing type bridge continuous seam structure is characterized in that the upper surfaces of the beams on two sides are respectively provided with a pre-embedded steel plate, the centerline of each pre-embedded steel plate and the centerline of the support below each pre-embedded steel plate are located in the same vertical plane, a slightly-arched seam crossing steel plate is arranged, the contact surfaces of the two ends of the slightly-arched seam crossing steel plate are welded to the pre-embedded steel plates of the beams of the two sides, the middle of the slightly-arched seam crossing steel plate is slightly arched, and the two ends of each reinforcing rib in the pavement layer are arranged in a gradual density-reduction mode; the two ends of each reinforcing rib in the pavement layer are arranged in the gradual density-reduction mode, so that some of the reinforcing ribs are long and some of the reinforcing ribs are short. The slightly-arched seam crossing type bridge continuous seam structure has the advantages that by additionally installing the slightly-arched seam crossing steel plate, a pavement structure on a continuous seam is completely separated from the beams; because the arched structure has relatively strong anti-pressure ability, the seam does not have great influence even if the seam is large, and the structural problem that the continuous seam is damaged is solved.

Description

A kind of micro-bow is across seam bridge continuous seam structure

Technical field

The present invention relates to a kind of micro-bow across seam bridge continuous seam structure.

Background technology

At present in the construction of the express lane in city, in order to save land resources, the general form that adopts viaduct, also has many places certainly because original planning is fixed, can only be helpless employing viaduct, owing to being the viaduct of long distance, therefore shrinkage joint will inevitably be set, when high vehicle speeds, vehicle Mei Guoyige shrinkage joint will produce vibration and the sound, cause that noise around increases, and the driver and crew of vehicle also do not feel like oneself.In order to improve the comfortableness of driving, on the elevated road of multispan warp, generally reduce as far as possible now the setting at shrinkage joint, wherein continuous seam structure is made at most shrinkage joint, being laid on surperficial flexible pavement, be continuous, and underground beam leaves shrinkage joint, its primary structure is exactly between layer and lower beam structure, to spread one deck rubber tile mating formation, mating formation, layer is separated with lower beam structure, in the middle of the layer of mating formation, reinforcing rib is set, impact due to factors such as design and construction process control, quite a few bridge stitches after operation a period of time continuously, just there will be damage phenomenon, the place of the most easily produce damaging is the really side of sewing on and reinforcing rib tip place, and maintenance difficult.Analyzing reason has 3 points, and the one, the difficult enforcement of intention of design, wants to utilize rubber tile during design, mating formation, layer is separated with lower beam structure, but rubber tile used only has 3-5mm thickness, is difficult to take on this.The 2nd, the gap of design is 40mm, and actual gap is much larger than 40mm.The 3rd, reinforcing rib does not have gradual change to subtract close variation, makes stress release concentrate on the tip of reinforcing rib.In addition this design also have one very key factor do not consider thorough, exactly when bridge is subject to load, the bridge at seam place is because stressed meeting produces a negative bending moment here, because rubber tile does not have supporting role continuously, do not have space to allow it be out of shape, this place is very easily damaged.

Summary of the invention

The object of the invention is the defect for former design, in conjunction with the actual conditions of construction, a new structure is set sewing on continuously, before making, the fault of construction of design is resolved, make bridge continuously the structure at seam place strengthened and not easily damaged.The present invention designs a kind of micro-bow across seam bridge continuous seam structure, comprise beam, bearing, the layer of mating formation, it is characterized in that: at the upper surface place of two side bars, a pre-embedded steel slab is respectively set, the center line of pre-embedded steel slab and the center line of lower seat are positioned on same vertical plane, there is a micro-bow cross-line steel plate, two contact surface of micro-bow cross-line steel plate and the welding of the pre-embedded steel slab of two side bars, the micro-bow in centre of micro-bow cross-line steel plate, the reinforcing rib two ends of mating formation in layer take gradual change to subtract close setting.It is characterized in that: the wide of pre-embedded steel slab is 300mm, the thickness of pre-embedded steel slab is 10mm, and two contact face width of micro-bow cross-line steel plate is 150mm, and its thickness is 10mm, Gao Gong higher primary school, in 15mm, is welded with the indented bars of 8-10mm on the back of a bow of micro-bow cross-line steel plate.It is characterized in that: the described reinforcing rib two ends of mating formation in layer take gradual change subtract the close length that is set to reinforcing rib have long have short.Advantage of the present invention be by the micro-bow of addition across seam steel plate, paving structure and the beam at this continuous seam place are kept apart completely, because arched anti-pressure ability is stronger, gap is slightly greatly also affected not quite; Owing to being bow-shaped structural above, on the bridge head of bottom, slightly to do lowlyer, while making this bridge affected by load, the hogging moment that beam-ends produces has living space and allows it discharge, and be unlikely, produces herein destructive power; By reinforcing rib gradual change, subtract close method, avoided stress to concentrate the destruction that discharges and produce.The mode of continuous seam processing that this invention is clear and definite, has solved the structural difficult problem that continuous seam place damages.

Accompanying drawing explanation

The structural representation that Fig. 1,2 is prior art, 11 is reinforcing rib, and 12 is the layer of mating formation, and 13 is rubber tile, and 14 is beam, and 15 is support, and Fig. 3,4,5 is structural representation of the present invention, and Fig. 6 is reinforcing rib schematic diagram of mating formation in layer of the present invention.

The specific embodiment

Comprise beam 1, bearing 2, mat formation layer 3, it is characterized in that: at the upper surface place of two side bars, a pre-embedded steel slab 4 is respectively set, the center line of pre-embedded steel slab and the center line of lower seat are positioned on same vertical plane, there is a micro-bow cross-line steel plate 5, two contact surface of micro-bow cross-line steel plate and the welding of the pre-embedded steel slab of two side bars, the micro-bow in centre of micro-bow cross-line steel plate, reinforcing rib 6 two ends of mating formation in layer take gradual change to subtract close setting.It is characterized in that: the wide of pre-embedded steel slab is 300mm, the thickness of pre-embedded steel slab is 10mm, and two contact face width of micro-bow cross-line steel plate is 150mm, and its thickness is 10mm, Gao Gong higher primary school, in 15mm, is welded with the indented bars of 8-10mm on the back of a bow of micro-bow cross-line steel plate.It is characterized in that: the described reinforcing rib two ends of mating formation in layer take gradual change subtract the close length that is set to reinforcing rib have long have short.

By calculating, the pre-embedded steel slab of a wide 300mm is set at the upper surface place of beam, the steel plate of 10mm for steel plate, line is wherein consistent with lower seat center line, and the end of beam suitable be low 20mm; According to the structure of the beam of different structure, make different micro-bow cross-line steel plates, two contact face length 150mm, middle micro-bow, bow is not more than 15mm, and the back of a bow is welded with the indented bars of 8-10mm, and does preservative treatment; The setting at reinforcing rib two ends takes gradual change to subtract close measure.

Because pre-embedded steel slab has 300mm wide, and arc across seam steel plate two contact surface only have 150mm, make in practice of construction due to reasons such as setting-outs, when gap spacing changes, arc still can have and connect effect across seam steel plate, thereby guarantee that continuous seam place easily forms a mass action.

First beam head on, a pre-buried thick steel plate of the wide 10mm of 300mm, its center line aligns with the center line of bearing; By the means of machining, manufacture a micro-bow across seam steel plate, wide consistent with deck-siding, long definite according to the structure of seam, thickness is 10mm, the high 15mm that is not more than of the highest bow, and on the back of a bow, be welded with the indented bars of 8-10mm, make it and be combined into an integral body with the layer of mating formation; The 3rd, the two ends of reinforcing rib arrange and take gradual change form, progressively subtract closely, do not allow stress concentrate and discharge.

Claims

1. a micro-bow is across seam bridge continuous seam structure, comprise beam, bearing, the layer of mating formation, it is characterized in that: at the upper surface place of two side bars, a pre-embedded steel slab is respectively set, the center line of pre-embedded steel slab and the center line of lower seat are positioned on same vertical plane, there is a micro-bow cross-line steel plate, two contact surface of micro-bow cross-line steel plate and the welding of the pre-embedded steel slab of two side bars, the micro-bow in centre of micro-bow cross-line steel plate, the reinforcing rib two ends of mating formation in layer take gradual change to subtract close setting.

2. press a kind of micro-bow claimed in claim 1 across seam bridge continuous seam structure, it is characterized in that: the wide of pre-embedded steel slab is 300mm, the thickness of pre-embedded steel slab is 10mm, two contact face width of micro-bow cross-line steel plate is 150mm, its thickness is 10mm, Gao Gong higher primary school, in 15mm, is welded with the indented bars of 8-10mm on the back of a bow of micro-bow cross-line steel plate.

By a kind of micro-bow claimed in claim 1 across seam bridge continuous seam structure, it is characterized in that: the described reinforcing rib two ends of mating formation in layer take gradual change subtract the close length that is set to reinforcing rib have long have short.