CN209292854U - A kind of aluminum alloy pedestrian bridge structure - Google Patents

Abstract

The utility model discloses a kind of aluminum alloy pedestrian bridge structure, foundation structure bottom is concrete pile, it is connected above foundation pile with cushion cap, it is overline bridge bridge pier above cushion cap, the pre-buried anchor slab above cushion cap is set to be fixedly connected with the column bottom plate of overline bridge bridge pier, it is column above column bottom plate, it is bent cap above column, bent cap is steel welding hollow structure, it is bent cap bottom plate below bent cap, top is bent cap top plate, and surrounding is bent cap side plate, several slab with haunched ribs are arranged in bent cap inner cavity, and two sides carry overline bridge bottom beam above bent cap.The advantages of the utility model has overline bridge stable structure, and vibration is small, and bearing capacity is strong, and installation is convenient and quick, does not influence urban transportation.

Description

A kind of aluminum alloy pedestrian bridge structure

Technical field

The utility model relates to building structure fields, are related specifically to a kind of aluminum alloy pedestrian bridge structure.

Background technique

Traditional overpass mainly uses steel construction or concrete structure, and superiority is good rigidity, more stable and stronger, but steel Structure overline bridge is also generally faced with endurance issues and the high problem of maintenance cost, concrete structure overline bridge caused by corrosion and deposits It is long in construction-time, the disadvantages of building engineering cumbersome influence urban transportation.Therefore, find that a kind of intensity is suitable, durability is good, scape It is good to see effect, builds set-up time short new city overpass, is of great significance to the development in city.Aluminum alloy materials Lightweight, many advantages, such as high-strength, corrosion-resistant, maintenance cost is low and recyclable recycling just meeting the need of this development It wants.Aluminium alloy bridge research in China's is started late.In March, 2007, First Domestic all aluminium alloy overpass was in Hangzhou Qing Chunlu It builds up, i.e. celebrating spring Lu Zhonghe overline bridge, opens the beginning of domestic all aluminium alloy overpass.Later, domestic aluminium alloy people's row Overline bridge occurs successively, and domestic aluminium alloy foot bridge is truss structure, the aluminum alloy bridge of this form, not only bearing capacity height but also Light structure is a kind of novel structure, also increases the beauty in city while alleviating urban traffic pressure.

Aluminium alloy overline bridge is transported to behind scene according to design drawing, directly places usually using the big component manufacture prepackage of factory It is fixed on the basis of the good overline bridge of pre-production, and is fastenedly connected overline bridge pontic with basis using fastener, the prefabricated base of overline bridge Plinth determines the bearing capacity and stabilizing power of aluminum alloy pedestrian bridge to a certain extent, is the important of aluminum alloy pedestrian bridge Component part.

We pass through patent and literature search, it has been found that some existing about aluminum alloy pedestrian bridge and its phase on basis Pass data, such as:

1, application of the aluminium alloy extrusions in overpass, (" modern property is newly built ", Lan Hua, In Urban And Rural Areas of Guangxi planning are set Count institute) wherein describe: aluminum alloy pedestrian bridge uses aluminium alloy semi-open type structural system, and basis uses drill-pouring under overline bridge Slurry.

2, a kind of combined type square aluminum alloy pedestrian bridge, application number: CN201310670506.9；Applicant: jungle group Co., Ltd；Abstract: the present invention relates to a kind of combined type square aluminum alloy pedestrian bridges, including four main couples, four transition purlins Frame, side walk slab and multiple stair, four main couples are distributed in square shape, and two neighboring main couple is connected by transition truss, One end of stair is arranged on main couple by support, and the other end is arranged on the ground；Main couple and transition truss include interior Facade, alien invasion and support frame, interior facade and alien invasion are linked together by support frame, the interior facade of main couple and transition purlin The interior facade of frame is linked together by support, and the alien invasion of main couple and the alien invasion of transition truss are connected to one by support It rises, support includes bottom steel plate, top steel plate and middle part rubber support, and bottom steel plate and top steel plate press from both sides middle part rubber support In centre, together with bottom steel plate is bolted with top steel plate.The present invention had not only solved the deficiency of steel structure bridge, but also energy It is effective to alleviate street congestion, improve the traffic capacity of road.

3, a kind of overpass and its construction method, application number: CN201410383166.6；Applicant: Yuan Hanzi；Slowly Duckweed；Abstract: the invention discloses a kind of overpasses, including pontic, further include the concrete of multiple spaced strips Foundation platform, the upper surface of multiple concrete foundation cushion caps collectively form supporting plane, between adjacent concrete foundation cushion cap Constitute underground utilities channel；It further include the plane steelframe being set on supporting plane；It further include the branch being arranged on plane steelframe Column, pontic are supported by pillar.The invention also discloses a kind of overpass construction methods.The present invention is using multiple strips Concrete foundation cushion cap substitutes traditional pile foundation and is supported to overline bridge, so that the case where obtaining identical support effect Under, the depth and area of foundation pit greatly reduce.Since the depth and area of foundation pit greatly reduce, in construction, without to surrounding Building lot is protected, and crater wall that no setting is required support, easy construction, short construction period, operating expenses are low, and will not be to underground Pipeline impacts.

4, the expanded letter overpass being set up between building, application number: CN201110279278.3；Applicant: Guangzhou Designing institute, city；Abstract: the present invention is set up in the expanded letter overpass between building, road two sides building and road it Between two-columned pier is set, the bottom of two-columned pier is connected with matched bored pile foundation, at the top of bridge pier Bent cap is set, and the main bridge of expanded letter overpass is arranged in the upper surface of bent cap；The both ends cantilever of main bridge is fixed with building respectively to be connected It connects；Main bridge mainly by include bottom-supporting steel truss, back cover steel plate and deck paving, steel truss by top boom, lower boom, web member and Steel cross bar is formed by connecting, and for back cover Interal fixation below steel cross bar, deck paving is set to the top of steel cross bar.The present invention has Following features: moulding is novel, design is unique, integrates using function and sightseeing function, is able to bear biggish additional Load, the bridge deck width of design are big, and stress condition is relatively sharp, bright and clear, can greatly reduce design-calculated workload, simultaneously Have the characteristics that easy for construction, work progress is small to traffic impact.

Some relevant aluminum alloy pedestrian bridges are disclosed by open source literature and its foundation structure is seen, find existing day abutment Plinth structure also has the shortcomings that bearing capacity is insufficient, and stability of foundation is not high, pedestal easy-to-rust.

Summary of the invention

Technical problem to be solved by the utility model is: providing a kind of aluminum alloy pedestrian bridge structure, there is overline bridge structure The advantages of stable, vibration is small, and bearing capacity is strong, and installation is convenient and quick, does not influence urban transportation.

The utility model is achieved through the following technical solutions:

A kind of aluminum alloy pedestrian bridge, the foundation structure bottom of overline bridge are concrete pile, foundation pile top and cushion cap phase Even, it is overline bridge bridge pier above cushion cap, is set to the pre-buried anchor slab above cushion cap and is fixedly connected with the column bottom plate of overline bridge bridge pier, stood It is column above column base plate, is bent cap above column, it is bent cap bottom plate below bent cap that bent cap, which is steel welding hollow structure, on Side is bent cap top plate, and surrounding is bent cap side plate, and two sides carry overline bridge bottom beam above bent cap.With conventional steel bar concrete overline bridge bent cap It compares, steel welding hollow structure bent cap of the present invention can complete combination prepackage in factory, avoid together with steel column soldering The cumbersome work of site operation, improves construction installation effectiveness, alleviates the weight of building；Several rib armpits are arranged in bent cap inner cavity Plate makes bent cap have preferable rigidity, keeps pontic to stablize, slight wobble does not occur.

The column is steel hollow structure, and concrete perfusion in column, fill orifice and column are reserved in bent cap bottom plate centre Inner cavity communicates, and fill orifice side wall and plane on bent cap are contour.Steel hollow column has lighter weight, facilitates the installation of early period Construction, and the class elliptical shape of itself has the antitorque stubborn torque of certain bending resistance, and column luminal perfusion enters slightly expanded concrete Afterwards, concrete is integrated with column, makes column with more measuring body performance, and the pressure of pontic is perfused by bent cap and center Concrete at hole directly can will be at pressure conduction to underground foundation pile.

Dowel is welded below pre-buried anchor slab above the cushion cap, dowel is U-shaped, the U-shaped silent and pre-buried anchor slab of dowel Fitting welding, the free end of dowel can be L-type or configuration.Traditional dowel connection type is to improve welding efficiency, Weld dowel on one piece of steel plate, then steel plate be bonded welding with pre-embedded steel slab, but due in cushion cap reinforcing bar it is closeer, the length of welding Square plate can mutually conflict with cushion cap reinforcing bar, cause cushion cap steel bar arrangement height to become smaller, cushion cap checking computations are not easy to meet, and the present invention connects It connects mode to be welded using U-shaped dowel with pre-embedded steel slab, solve the problems, such as conflicting with cushion cap reinforcing bar；Fusion length meets It is required that while also solve the problems, such as that spot-welded quality is difficult to ensure, improve construction quality and construction efficiency.

Slab with haunched ribs is arranged in the column suspension column, uses water-proof concrete package covering, the interior arrangement of concrete around slab with haunched ribs Steel mesh.Slab with haunched ribs can effectively mitigate the concentration of the stress at column suspension column, be covered suspension column using the water-proof concrete with steel mesh Gai Hou more strengthens the intensity at suspension column, also avoids at suspension column by the infringement corroded.

Billet is set between two sides and overline bridge bottom beam above the bent cap, is overline bridge bottom beam above billet, the two makes It is connected with fastener.The effect of billet is the intensity reinforced at bent cap support overline bridge bottom beam, increases the steel at fastener fastening Plate thickness.

Overline bridge bottom beam section is rectangular hollow aluminum section, and the edge of a wing, setting below the edge of a wing is arranged in aluminum profile two sides of the bottom Groove, groove is interior to place rubber slab, and overline bridge bottom beam is separated by by rubber slab with billet.There are two effects for rubber slab herein: 1, Rubber slab provides the flexible buffer at support, and a part of vibration from bridge floor can be absorbed, keep the seismaesthesia of overline bridge slighter； 2, aluminium alloy is avoided directly to contact with steel construction, because electrochemistry can occur under moisture conditions after aluminium alloy is contacted with steel construction Reaction, aluminium alloy is highly prone to corrode as oxidizing anode, therefore adds the insulating layer of rubber slab, can effectively prevent corruption The generation of erosion.The flange portions of overline bridge base beam section can be directly connected using fastener with rubber layer and billet layer, recessed Rubber slab and clamping can be placed in slot before lifting overline bridge in advance, improve the working efficiency of installation.

The medicine have the advantages that

1, the utility model overline bridge structure uses hollow steel column concrete perfusion and suspension column cladding reinforcing steel bar net and mixes The mode for coagulating soil improves the anti-pressure ability and stability on basis；Has the advantages that stable structure.

2, the utility model overline bridge structure uses steel hollow column, and bent cap structure of the steel hollow with slab with haunched ribs can On-site hoisting is installed again after prefabrication, is quickly and expediently installed；The groove structure of overline bridge bottom beam can be pre-placed rubber slab, to peace Dress brings convenience；The use of U-shaped dowel reduces the working time of welding, improves the fixing intensity of pre-buried anchor slab.

3, the utility model overline bridge structure uses suspension column cladding reinforcing steel bar net and waterproof concrete structure, improves column Anti-rust and corrosionproperties；Overline bridge bottom beam setting rubber slab is separated by with billet, prevents the generation of electrochemical corrosion, improves overline bridge Service life.

Detailed description of the invention

Fig. 1 is aluminum alloy pedestrian bridge foundation structural schematic diagram of the present invention；

Fig. 2 is the A of Fig. 1 to structural schematic diagram；

Fig. 3 is the B of Fig. 1 to structural schematic diagram；

Fig. 4 is the enlarged structure schematic diagram in Fig. 1 at I；

Figure label explanation:

1, foundation pile；21, cushion cap；22, dowel；23, pre-buried anchor slab；31, column bottom plate；32, slab with haunched ribs；33, steel mesh； 34, water-proof concrete；4, column；41, concrete；5, bent cap；51, fill orifice；52, bent cap bottom plate；53, bent cap top plate；54, it covers Beam side plate；55, bent cap side plate；56, ribbed stiffener；57, billet；58, Antivibration block；6, overline bridge bottom beam；61, rubber slab.

Specific embodiment

A kind of aluminum alloy pedestrian bridge structure and its construction method of installation, foundation structure bottom are concrete pile 1, base 1 top of stake is connected with cushion cap 2, is overline bridge bridge pier above cushion cap 2, is set to the pre-buried anchor slab 23 and overline bridge bridge pier of 2 top of cushion cap Column bottom plate 31 be fixedly connected, be column 4 above column bottom plate 31, be bent cap 5 above column 4, bent cap 5 is that steel welding is empty Core structure is bent cap bottom plate 52 below bent cap 5, and top is bent cap top plate 53, and surrounding is bent cap side plate 54/55, and bent cap inner cavity is wide It spends direction and welds 8 slab with haunched ribs 32,5 top two sides of bent cap carry overline bridge bottom beam 6.

The column 4 is steel hollow structure, and C30 concrete 41 is perfused in column 4, reserves perfusion among bent cap bottom plate 52 Hole 51 is communicated with 4 inner cavity of column, and 51 side wall of fill orifice and plane on bent cap 5 are contour.

Dowel 22 is welded below the thick pre-buried anchor slab 23 of 20mm of 2 top of cushion cap, dowel 22 is U-shaped, and dowel insertion is held Platform free end be L shape, dowel 22 it is U-shaped it is silent welding is bonded with pre-buried anchor slab 23, opened among pre-buried anchor slab 23 φ 25mm be perfused Hole.

14 slab with haunched ribs 32 are arranged in 4 suspension column of column, and 32 surrounding of slab with haunched ribs is covered using the package of C30 water-proof concrete 34 Lid, concrete is interior to arrange that steel mesh 33, the high 500mm of concrete wrap up arc radius 250mm.

Billet 57 is set between the 5 top two sides of bent cap and overline bridge bottom beam 6, is overline bridge bottom beam 6 above billet 57, The two is connected using fastener.

It is rectangular hollow aluminum section above 6 section of overline bridge bottom beam, the edge of a wing is arranged in two sides below section, sets below the edge of a wing Groove is set, places rubber slab 61 in groove, overline bridge bottom beam 6 and billet 57 are separated by by rubber slab 61.

Claims (6)

1. a kind of aluminum alloy pedestrian bridge structure, it is characterised in that: foundation structure bottom is concrete pile (1), foundation pile (1) Top is connected with cushion cap (2), is overline bridge bridge pier, pre-buried anchor slab (23) and the overline bridge being set to above cushion cap (2) above cushion cap (2) The column bottom plate (31) of bridge pier is fixedly connected, and is above column bottom plate (31) column (4), is above column (4) bent cap (5), lid Beam (5) is steel welding hollow structure, is below bent cap (5) bent cap bottom plate (52), and top is bent cap top plate (53), and surrounding is lid Several slab with haunched ribs (32) are arranged in beam side plate (54/55), bent cap inner cavity, two sides carrying overline bridge bottom beam (6) above bent cap (5).

2. aluminum alloy pedestrian bridge structure according to claim 1, it is characterised in that: the column (4) is steel hollow Structure, column (4) interior concrete perfusion (41), bent cap bottom plate (52) intermediate reserved fill orifice (51) are communicated with column (4) inner cavity, Fill orifice (51) side wall and plane on bent cap (5) are contour.

3. aluminum alloy pedestrian bridge structure according to claim 1, it is characterised in that: pre-buried above the cushion cap (2) Dowel (22) are welded below anchor slab (23), dowel (22) is U-shaped, and the U-shaped of dowel (22) silent is bonded weldering with pre-buried anchor slab (23) It connects.

4. aluminum alloy pedestrian bridge structure according to claim 1, it is characterised in that: rib is arranged in column (4) suspension column Armpit plate (32), slab with haunched ribs (32) surrounding use the covering of water-proof concrete (34) package, interior arrangement steel mesh (33) of concrete.

5. aluminum alloy pedestrian bridge structure according to claim 1, it is characterised in that: above the bent cap (5) two sides with Antivibration block (58) and billet (57) are set between overline bridge bottom beam (6), are overline bridge bottom beam (6), the two above billet (57) It is connected using fastener.

6. aluminum alloy pedestrian bridge structure according to claim 5, it is characterised in that: overline bridge bottom beam (6) section is The edge of a wing is arranged in rectangular hollow aluminum section, aluminum profile two sides of the bottom, and groove is arranged below the edge of a wing, places rubber slab (61) in groove, Overline bridge bottom beam (6) and billet (57) are separated by by rubber slab (61).