CN201151866Y

CN201151866Y - Arch beam type overbridge

Info

Publication number: CN201151866Y
Application number: CNU2008200042998U
Authority: CN
Inventors: 袁悦; 张国志
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-29
Filing date: 2008-01-29
Publication date: 2008-11-19
Anticipated expiration: 2018-01-29

Abstract

An arch-beam overpass comprises a pier and a pedestrian bridge. The utility model is characterized in that the two ends of the pedestrian bridge are arranged on the pier; an arch beam for supporting the pedestrian bridge is arranged between the two piers; the lower end of the arch beam is fixed on the ground; the arch beam supports or suspends the pedestrian bridge through a suspender cable. The arch-beam overpass with the advantages of reasonable structure and design, small construction difficulty, short time, high fastness and intensity and low production cost can meet the needs of pedestrian overpass construction and development with larger span and high safety and fastness, satisfy the optimal performance price ratio of the pedestrian overpass construction, increase the aesthetic outlook and reduce the adverse effects of the pedestrian overpass on road traffic.

Description

Arched girder formula overpass

Technical field

The utility model belongs to particularly People's Bank of China's overpass field of bridge construction structure, is specifically related to the arched girder formula overpass of a kind of novel structure, sturdy and durable and low cost of manufacture.

Background technology

Increase day by day along with urbanization construction and road traffic pressure, increasing city and area are selected to build on vehicle pass-through flow road, build overpass to alleviate traffic pressure, avoid the contradiction between pedestrian and the motor vehicle, improve the traffic safety degree.The overpass of various moulding has also beautified urban construction in addition, becomes a place or zonal sign.

At present China builds and the overline bridge in building all adopts the pontic of steel framework or reinforced concrete structure, its construction period is longer, making and installation cost are higher, application life is very limited, this becomes the deadly defect that the city overline bridge is built, therefore a lot of places have to adopt cost higher, administer and maintain comparatively that the underground passage of difficulty replaces overpass, and underground passage can be given moving to change and bringing bigger influence and defective of city and road pipe network.Say objectively, the traffic guiding effect of People's Bank of China's overpass is stronger than underground passage, construction period is shorter relatively, cost is lower, can in the shortest time, mix the contradiction of going by transport solution node people car, by adopting the pedestrian overcrossing of new structure and material, can be good at solving the problems that present overline bridge construction exists.

Fibre reinforced composites (FRP) are to use increasingly extensive a kind of novel structural meterials in recent years in civil engineering.It has high-strength, lightweight, remarkable advantage such as corrosion-resistant, at the reinforcement and strengthening of structure, go along with sb. to guard him aspect such as anticorrosion and obtained good application.Along with the superior function of FRP material is approved by engineering circle gradually, external many engineerings begin it is applied in the newly-built bridge, or even in the Longspan Bridge.Since the seventies in last century, the FRP material just begins to attempt using in bridge engineering.Britain, the U.S. and Israel use this new material at first as the main member in building structure and the bridge construction, and what adopted mostly at that time is GFRP (glass fibre reinforced composion, i.e. glass fiber reinforced plastic).In the later stage seventies, China also begins GFRP is studied.In nineteen eighty-two, Beijing Miyun has built up strides 20.7 meters in footpath, wide 9.2 meters GFRP freely-supported honeycomb case beam road bridge, design load grade vapour-15, hangs-80, and has carried out on-the-spot loading test, has proved the feasibility of FRP as supporting member.Occurring the honeycomb unstability after being open to traffic causes bridge floor to sink and the problem of case web top secondary buckling.Overhauled in 1987, bearing system is transformed into the GFRP-concrete combined structure, use so far, operation conditions is good.

The engineering bridge that bridge that present employing fibre reinforced composites are constructed and bridge construction attractive in appearance such as cable stayed bridge, cable-suspended bridge all are used for long span, high load-bearing is because difficulty of design and construction is never built application in the Selection of Urban Pedestrian Overpass construction.

The utility model content

That the purpose of this utility model provides is fast between a kind of reasonable in design, difficulty of construction hour, firmly intensity height, arched girder formula overpass that the cost cost is low, it can adapt to span and require the pedestrian overcrossing construction increasing, that the firm performance of safety is high and the needs of development, satisfy the optimality price ratio that pedestrian overcrossing is built, and the raising aesthetic measure reduces the adverse effect of pedestrian overcrossing to road traffic.

For achieving the above object, the technical solution adopted in the utility model is as follows:

A kind of arched girder formula overpass, comprise bridge pier and People's Bank of China gap bridge, it is characterized in that the two ends that described People's Bank of China passes a bridge are erected on the bridge pier, be provided with between two bridge piers and support the arched girder that People's Bank of China passes a bridge, the lower end and the ground of described arched girder are fixed, and arched girder supports or passes a bridge by hoist cable suspention People's Bank of China.

Concretely, described People's Bank of China passes a bridge and is the girder formation of single or the plural fibre reinforced composites that link together, the length direction that machine direction in the described fiber-reinforced composite material girder is passed a bridge along People's Bank of China extends, and described girder is hollow tubular, entity or the cellular structure of square-section.

It is the main beam structure that steel structure or steel concrete are constructed that described People's Bank of China passes a bridge.

The two ends that described People's Bank of China passes a bridge are provided with People's Bank of China Pan Qiao passageway or stair, two of being provided with for the both sides of passing a bridge along People's Bank of China of described People's Bank of China Pan Qiao passageway or stair or pass a bridge that a side is provided with in People's Bank of China.

Described arched girder is made up of main arch beam and subarch beam, the two ends of main arch beam are provided with the subarch beam, the two ends of main arch beam all are fixedly installed on the inboard of two bridge piers, the top of main arch beam is higher than People's Bank of China and passes a bridge, the subarch beam is positioned at the supported underneath People's Bank of China that People's Bank of China passes a bridge passes a bridge, and one end and the main arch beam fixedly other end are fixedlyed connected with bridge pier.

The lower end of described main arch beam is individually fixed in the both sides that People's Bank of China passes a bridge, and the distance of closing on bridge pier and arched girder lower end is a sidewalk width.

Be fixed with hoist cable on the described main arch beam, the girder that the other end of described hoist cable and People's Bank of China pass a bridge is fixed, and the load-bearing suspention is carried out at the middle part that People's Bank of China passes a bridge.

The two ends that described People's Bank of China passes a bridge are provided with People's Bank of China Pan Qiao passageway or stair, and described People's Bank of China gap bridge and the Pan Qiao of People's Bank of China or stair both sides are provided with handrail, and described handrail installs and fixes by baluster.

Also be set with protected apron between the described baluster, described protected apron is the plural layer transparent material, is provided with lighting between transparent material.

The step of described People's Bank of China Pan Qiao passageway or stair is stepped on beam and is provided with antiskid plate, and it is translucent structure that this step is stepped on beam.

This arched girder formula overpass goes for various material moulding, satisfy the high span needs of present road construction, and the girder that can adopt fibre reinforced composites to pass a bridge as People's Bank of China, effectively reduce the weighted design requirement of drag-line and Tower Column of A Cable Stayed Bridge, People's Bank of China's gap bridge of while drag-line resiliency supported is striden resiliency supported for a short time as many skies and can be worked by continuous beam, internal stress is very little, building intensity is low, from heavy and light, easy construction, and the two ends that People's Bank of China passes a bridge adopt bridge pier and subarch beam to support, and bridge pier also can be used for supporting the People's Bank of China Pan Qiao passageway or the stair at People's Bank of China gap bridge two ends simultaneously.In order to increase the firm performance of this arched girder formula overpass, can also adopt the form of hoist cable that the middle part load-bearing of pedestrian overcrossing is married again on the main arch beam, corresponding reduction reduces cost of manufacture to the engine request of pedestrian overcrossing girder and main arch beam when whole pontic aesthetic measure is provided.

Main arch beam can adopt metal tube, reduces difficulty of construction, and all parts of overline bridge can adopt batch production production, have promptly saved cost of manufacture and construction intensity, can guarantee the precision of whole assembling again.For the pedestrian overcrossing of crossing over city garage sidewalk.The lower end of main arch beam can be arranged on People's Bank of China and pass a bridge between the sidewalk of crossing over and major trunk roads, structure and handsome in appearance, and do not influence the function setting that it crosses over road.

The People's Bank of China of these fibre reinforced composites crosses bridge girder and changes the form of structure that connects to form the bridge floor main body both at home and abroad after the transverse fiber reinforced composite bridge member that generally uses is laid, but adopt single longitudinal fiber reinforced composite main beam member or combination, can realize single girder, big span and bigger span, effectively reduced the potential safety hazard that connects existence because of transverse fiber reinforced composite bridge member, eliminate the influence of local resonance again, improved girder intensity and security performance that People's Bank of China passes a bridge.The advantage that fibre reinforced composites have is in light weight, intensity is high, corrosion resistance is strong, hot strength is high, as the specific strength of the reinforced plastic glass fibre FRP Composite Material of routine is 20～50 times of steel, adopts fibre reinforced composites will alleviate dead load greatly.In the pedestrian overcrossing engineering, use the limit span of bridge is increased greatly, and can reduce the influence of geological process.

Handrail hurdle, handrail and the step of People's Bank of China's gap bridge, People's Bank of China Pan Qiao passageway or stair both sides stepped on can adopt between beam and cooperated the back bonding of pegging graft to fix or bolt fixed mode, realize the convenient and swift of dismounting and replacing, lighting installation is set on protected apron, has more eliminated the difficult problem that circuit is laid.

The beneficial effects of the utility model are, fast between this arched girder formula overpass reasonable in design, difficulty of construction hour, firmly intensity height, cost cost are low, it can adapt to span and require the pedestrian overcrossing construction increasing, that the firm performance of safety is high and the needs of development, satisfy the optimality price ratio that pedestrian overcrossing is built, and the raising aesthetic measure reduces the adverse effect of pedestrian overcrossing to road traffic.

Description of drawings

Fig. 1 is the composition structural representation of the utility model specific embodiment;

Fig. 2 is that the A of Fig. 1 is to structural representation.

The specific embodiment

As depicted in figs. 1 and 2, two subarch beams that this arched girder formula overpass is mainly climbed bridge ladder, People's Bank of China's gap bridge, main arch beam by bridge pier, People's Bank of China and is positioned at the main arch beam both sides are formed, the two ends of People's Bank of China's gap bridge 10 are erected on the bridge pier 6, be provided with between two bridge piers and support the arched girder that People's Bank of China passes a bridge, the lower end and the ground of arched girder are fixed, and arched girder supports or passes a bridge by hoist cable suspention People's Bank of China.People's Bank of China's gap bridge 10 is that the girder of single fibre reinforced composites constitutes, and the length direction that the machine direction in the fiber-reinforced composite material girder is passed a bridge along People's Bank of China extends, and girder is the cellular structure of square-section.The two ends that People's Bank of China passes a bridge are provided with People's Bank of China and climb bridge ladder 1 and 1 ', and it is two that are provided with along the both sides that People's Bank of China passes a bridge that bridge ladder is climbed by People's Bank of China.Arched girder is made up of main arch beam 5 and subarch beam 7,7 ', the two ends of main arch beam are provided with the subarch beam, the two ends of main arch beam all are fixedly installed on the inboard of two bridge piers, the top of main arch beam is higher than People's Bank of China and passes a bridge, the subarch beam is positioned at the supported underneath People's Bank of China gap bridge that People's Bank of China passes a bridge, one end and main arch beam are fixed, and the other end is fixedlyed connected with bridge pier.The lower end 8 and 8 ' of main arch beam is individually fixed in the both sides that People's Bank of China passes a bridge, and the distance of closing on bridge pier and arched girder lower end is a sidewalk width.Be fixed with hoist cable 9 on the main arch beam, the girder that the other end of hoist cable and People's Bank of China pass a bridge is fixed, and the load-bearing suspention is carried out at the middle part that People's Bank of China passes a bridge.People's Bank of China's gap bridge and People's Bank of China climb the bridge ladder both sides and are provided with handrail 3, and handrail installs and fixes by baluster 4, also is set with protected apron 2 between the baluster, and protected apron is the plural layer transparent material, is provided with lighting between transparent material.The step that bridge ladder is climbed by People's Bank of China is stepped on beam and is provided with antiskid plate, and it is translucent structure that this step is stepped on beam.

Claims

1. arched girder formula overpass, comprise bridge pier and People's Bank of China gap bridge, it is characterized in that the two ends that described People's Bank of China passes a bridge are erected on the bridge pier, be provided with between two bridge piers and support the arched girder that People's Bank of China passes a bridge, the lower end and the ground of described arched girder are fixed, and arched girder supports or passes a bridge by hoist cable suspention People's Bank of China.

2. arched girder formula overpass according to claim 1, it is characterized in that it is the girder formation of single or the plural fibre reinforced composites that link together that described People's Bank of China passes a bridge, the length direction that machine direction in the described fiber-reinforced composite material girder is passed a bridge along People's Bank of China extends, and described girder is hollow tubular, entity or the cellular structure of square-section.

3. arched girder formula overpass according to claim 1 is characterized in that it is the main beam structure that steel structure or steel concrete are constructed that described People's Bank of China passes a bridge.

4. arched girder formula overpass according to claim 1, it is characterized in that the two ends that described People's Bank of China passes a bridge are provided with People's Bank of China Pan Qiao passageway or stair, two of being provided with for the both sides of passing a bridge of described People's Bank of China Pan Qiao passageway or stair or pass a bridge that a side is provided with in People's Bank of China along People's Bank of China.

5. arched girder formula overpass according to claim 1, it is characterized in that described arched girder is made up of main arch beam and subarch beam, the two ends of main arch beam are provided with the subarch beam, the two ends of main arch beam all are fixedly installed on the inboard of two bridge piers, the top of main arch beam is higher than People's Bank of China and passes a bridge, the subarch beam is positioned at the supported underneath People's Bank of China that People's Bank of China passes a bridge passes a bridge, and one end and the main arch beam fixedly other end are fixedlyed connected with bridge pier.

6. arched girder formula overpass according to claim 5 is characterized in that the lower end of described main arch beam is individually fixed in the both sides that People's Bank of China passes a bridge, and the distance of closing on bridge pier and arched girder lower end is a sidewalk width.

7. arched girder formula overpass according to claim 5 is characterized in that being fixed with hoist cable on the described main arch beam, and the girder that the other end of described hoist cable and People's Bank of China pass a bridge is fixed, and the load-bearing suspention is carried out at the middle part that People's Bank of China passes a bridge.

8. arched girder formula overpass according to claim 1, it is characterized in that the two ends that described People's Bank of China passes a bridge are provided with People's Bank of China Pan Qiao passageway or stair, described People's Bank of China gap bridge and the Pan Qiao of People's Bank of China or stair both sides are provided with handrail, and described handrail installs and fixes by baluster.

9. arched girder formula overpass according to claim 8 is characterized in that also being set with protected apron between the described baluster, and described protected apron is the plural layer transparent material, is provided with lighting between transparent material.

10. arched girder formula overpass according to claim 8, the step that it is characterized in that described People's Bank of China Pan Qiao passageway or stair is stepped on beam and is provided with antiskid plate, and it is translucent structure that this step is stepped on beam.