CN205557290U

CN205557290U - Monolithic purlin formula annular passenger footbridge

Info

Publication number: CN205557290U
Application number: CN201620328416.0U
Authority: CN
Inventors: 王帆; 乔云强; 赖亚平
Original assignee: Woods Is With Im International Construction Consulting (china) Co Ltd
Current assignee: Woods Is With Im International Construction Consulting (china) Co Ltd
Priority date: 2016-04-19
Filing date: 2016-04-19
Publication date: 2016-09-07
Anticipated expiration: 2026-04-19

Abstract

The utility model discloses a monolithic purlin formula annular passenger footbridge, including monolithic annular trussed girder and a plurality of cantilever cross rib, the cantilever cross rib links to each other through annular tie rod and forms the lower formula structure of holding that is used for the support bridge panel, the utility model provides a problems that exist of the annular steel case roof beam overline bridge of present conventionality, have that simple structure, atress are equitable, cost economy, build the maintenance convenient, use advantages such as comfortable, handsome in appearance, higher economy and social value have, be worth novel day bridge construction using widely.

Description

Monolithic purlin formula Annular Pedestrian Overpass

Technical field

This utility model relates to a kind of overpass, particularly to a kind of monolithic purlin formula Annular Pedestrian Overpass.

Background technology

City overhead pedestrian crossing construction amount is huge, it is desirable to its version is simple, quick construction, view Good, cost economic；Steel box girder, owing to its rigidity is big, construction technology is ripe, is that present stage is the most frequently used Overline bridge main beam structure, and have " national building standard design atlas. urban road overpass " for design Construction uses；But, steel box girder there is also problems with:

(1) ability of steel box-girder overline bridge adaptation span change is more weak；General steel box girder is applicable to span relatively Little annular overpass, arranges more bridge pier under bridge；Due to road traffic layout, underground pipe network, Slip gauge such as draws at the reason, inevitably limits the layout of bridge pier, need to strengthen structure when footpath so that steel case Beam deck-molding strengthen, and then cause construction costs increase, bridge floor is raised, ladder access increases, comfort reduces Deng series of problems；

(2) steel box-girder overline bridge is the closing box-shaped space being welded by multi-sheets, and welding job amount is relatively big, Owing to inner space is little, welding operation inconvenience in case, weldquality is difficult to ensure；The box-shaped simultaneously closed is empty Between also cause late maintaining, detect, the inconvenience such as maintenance, structure durability is difficult to ensure that；

(3) steel box-girder overline bridge transports to in-site installation after factory's sectional making, owing to the box beam scale of construction is relatively big, Its transport, installation are to equipment requirements height, and the impact on road traffic is bigger；

(4) overpass is positioned at wagon flow, crowded urban central zone mostly, should have certain scape Seeing function, and steel box-girder overline bridge form is single, view is poor.

It is therefore desirable to a kind of novel overpass, its ability adapting to span change is relatively strong, effectively drops Low floor elevation, minimizing ladder access length, raising pedestrian's street crossing comfortableness, and version is simple, it is easy to add Work makes, and welding quality is guaranteed, late maintaining, detects, keeps in repair the most more convenient, and overall landscape effect is relatively Good.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of monolithic purlin formula Annular Pedestrian Overpass, and it is fitted Answer the ability that span changes relatively strong, effectively reduce floor elevation, reduce ladder access length, improve pedestrian's street crossing and relax Adaptive, version is simple, it is easy to processing and fabricating, and welding quality is guaranteed, late maintaining, detects, ties up Repairing the most more convenient, overall landscape effect is preferable.

Monolithic purlin of the present utility model formula Annular Pedestrian Overpass, including monolithic annulus girder truss and several cantilevers Cross rib, described cantilever cross rib includes upper arm rib and tilts the underarm rib being connected therewith；Described upper and lower arm rib The inner is all connected on annular monolithic annulus girder truss, and the outer end of described upper and lower arm rib is connected with annular tie-rod, Form the triangular system for support bridge panel, concurrently form overall base-supporting structural system.

Further, described monolithic annulus girder truss include an annular top boom, annular lower boom, one In root annular, chord member and Duo Gen are located at the web member between each chord member, and the inner of described underarm rib is connected under annular Chord member, the inner of described upper arm rib is connected to chord member in annular.

Further, described monolithic annulus girder truss tilts inside the center of circle, and described monolithic annulus girder truss with The angle of horizontal plane is 60 °～75 °.

Further, described monolithic annulus girder truss is 67.5 ° with the angle of horizontal plane.

Further, described upper arm rib is parallel to horizontal plane, and the angle between described upper arm rib and underarm rib is 10 °～15 °.

Further, the angle between described upper arm rib and underarm rib is 12.5 °.

Further, described annular tie-rod is sequentially connected with each cantilever cross rib and is linked together by each cantilever cross rib.

Further, this overpass also includes that several bridge piers, described bridge pier are " V " shape pier structure.

Further, this overpass also includes the floorings being laid on upper arm rib, and described floorings are die mould Steel plate structure or orthotropic rectangular plates structure.

Further, this overpass also includes the guardrail being located at floorings medial and lateral.

Monolithic purlin of the present utility model formula Annular Pedestrian Overpass, has the advantages that

(1) this utility model uses monolithic annulus girder truss as annular overline bridge main stress structure, adapts to span The ability of change is relatively strong, can arrange truss deck-molding and the sectional dimension of main stressed member according to span demand； Identical truss deck-molding, increases annular top boom, the sectional dimension of annular lower boom, the carrying to girder truss Capability improving is obvious, is applicable to large span overpass；

(2) this utility model is base-supporting structure, and force structure major part is placed on floorings, significantly subtracts Structure height under little bridge floor, under conditions of meeting identical under-clearance, can effectively reduce floor elevation, Shorten ladder access length, improve pedestrian's street crossing comfortableness；

(3) monolithic annulus girder truss of the present utility model is welded by multiple rod members, and rod member all can use just In the shaped steel of buying, version is simple, belongs to modular construction, it is easy to processing and fabricating, and welding quality has Ensure；And be unenclosed construction, late maintaining, detect, to keep in repair the most relatively steel box-girder convenient, endurance quality is more Good, the various primary structure member of structure all exposes, and also mitigates the thick and heavy sense of structure while embodying component U.S.；

(4) this utility model is made up of multiple steel beam column, and each component can complete in factory, transports to existing After Chang, welding is assembled into bridge；Owing to the component scale of construction is little, rod member welding job amount is little, and on-site hoisting is with assembling more Adding efficient and convenient, the impact on road traffic reduces the most accordingly；

(5) this utility model new in structure, structural member is abundant and orderly, coordinates Spanish furnish and scape Take into consideration bright etc., the most prominent landscape effect can be created, become landmark building；

(6) monolithic annulus girder truss is main bearing member, simultaneously can also be as the supporting of overline bridge awning Structure, saves construction costs, and overall view is good.

Accompanying drawing explanation

With embodiment, this utility model is further described below in conjunction with the accompanying drawings:

Fig. 1 is the schematic diagram of this utility model wherein segment structure；

Fig. 2 is use state diagram of the present utility model.

Detailed description of the invention

Fig. 1 is the schematic diagram of this utility model wherein segment structure, and Fig. 2 is use state of the present utility model Figure, as shown in the figure: the monolithic purlin formula Annular Pedestrian Overpass of the present embodiment, if including monolithic annulus girder truss and Dry cantilever cross rib, described cantilever cross rib includes upper arm rib 22 and tilts the underarm rib 21 being connected therewith；Described The inner of upper and lower arm rib 21 is all connected on annular monolithic annulus girder truss, described upper and lower arm rib 21 Outer end is connected with annular tie-rod 4, forms the triangular system for support bridge panel 3, concurrently forms entirety Base-supporting structural system；Annular overline bridge be suitable to be arranged in urban road intersection, meet each quadrant pedestrian and Street demand crossed by bicycle, and landscape effect is preferable；Cantilever cross rib spacing-controllable system, 1.5～2.5m, is uniformly divided Cloth is on monolithic annulus girder truss；Cantilever cross rib and monolithic annulus girder truss are connected to form stable triangle and prop up Support structure；Choose according to material, structure stress and view needs, monolithic annulus girder truss can be selected for rectangle steel Manage or round steel pipe is formed by connecting；Monolithic annulus girder truss is as the main stress structure of this overline bridge, and cantilever is horizontal Rib is then as the supporting structure of bridge deck, and annular tie-rod 4, then as stable system structure, the most often solves Rule steel box-girder overline bridge exist problems, have simple in construction, reasonable stress, cost economic, construction support Protect convenience, use the advantages such as comfortable, handsome in appearance, there is higher economy and social value, be to be worth pushing away The wide novel sky bridge construction used.

In the present embodiment, described monolithic annulus girder truss includes 11, annular lower edge of an annular top boom In 12, annular of bar, chord member 14 and Duo Gen is located at the web member between each chord member, described underarm rib 21 interior End is connected to annular lower boom 12, and the inner of described upper arm rib 22 is connected to chord member 14 in annular；Web member Version is more, and the rod member being between annular chord member can be all web member, such as, can include vertical web member 131 With diagonal web member 132；Monolithic annulus girder truss can be multi-module structure, in use by multistage module assembled.

In the present embodiment, described monolithic annulus girder truss tilts inside the center of circle, and described monolithic annulus truss Beam can be 60 °～75 ° with the angle of horizontal plane；Towards the center of i.e. loop configuration inside the center of circle；Can Ensure structural system stable equilibrium under dead load；Such as, described monolithic annulus girder truss and horizontal plane Angle can be 67.5 °.

In the present embodiment, described upper arm rib 22 is parallel to horizontal plane, described upper arm rib 22 and underarm rib 21 it Between angle can be 10 °～15 °；The triangular system that underarm rib 21 and upper arm rib 22 can be made to constitute is full Foot bridge floor bearing strength and rigidity；Such as, the angle between described upper arm rib 22 and underarm rib 21 can be 12.5°。

In the present embodiment, described annular tie-rod 4 is sequentially connected with each cantilever cross rib and is connected by each cantilever cross rib Together；To strengthen the structural integrity of this overline bridge, form stable entirety, improve the carrying of cantilever cross rib Effect

In the present embodiment, this overpass also includes several bridge piers 5, and described bridge pier 5 is tied for " V " shape pier Structure；Bridge pier 5 includes main stress part and auxiliary part of the force, and wherein main stress part is used for supporting annular purlin Set a roof beam in place, i.e. top is connected to lower boom 12, underarm rib 21 and the connecting portion of vertical web member, assists part of the force It is connected to underarm rib 21, upper arm rib 22 and the connection of annular tie-rod 4 for supporting annular tie-rod 4, i.e. top Position, this structure can play good supporting role in the case of reducing bridge pier 5 scale of construction.

In the present embodiment, this overpass also includes the floorings 3 being laid on upper arm rib 22, described bridge floor Plate 3 is profiled sheet structure or orthotropic rectangular plates structure, and bridge deck structure intensity is high, durable in use.

In the present embodiment, this overpass also includes the guardrail 6 being located at floorings 3 medial and lateral；Guardrail 6 can It is only defined side, it is possible to be located at both sides, to improve the safety of pedestrian's walking.

Finally illustrate, above example only in order to the technical solution of the utility model to be described and unrestricted, Although being described in detail this utility model with reference to preferred embodiment, those of ordinary skill in the art should Work as understanding, the technical solution of the utility model can be modified or equivalent, without deviating from this reality By objective and the scope of new technique scheme, it all should be contained in the middle of right of the present utility model.

Claims

1. a monolithic purlin formula Annular Pedestrian Overpass, it is characterised in that: include monolithic annulus girder truss and some Individual cantilever cross rib, described cantilever cross rib includes upper arm rib and tilts the underarm rib being connected therewith；Described upper and lower The inner of arm rib is all connected on annular monolithic annulus girder truss, and the outer end of described upper and lower arm rib is with annular system Bar is connected, and forms the triangular system for support bridge panel, concurrently forms overall base-supporting structural system.

Monolithic purlin the most according to claim 1 formula Annular Pedestrian Overpass, it is characterised in that: described monolithic Annular truss beam includes that in an annular top boom, annular lower boom, an annular, chord member and Duo Gen set Web member between each chord member, the inner of described underarm rib is connected to annular lower boom, described upper arm rib interior End is connected to chord member in annular.

Monolithic purlin the most according to claim 2 formula Annular Pedestrian Overpass, it is characterised in that: described monolithic Annular truss beam tilts inside the center of circle, and the angle of described monolithic annulus girder truss and horizontal plane be 60 °～ 75°。

Monolithic purlin the most according to claim 3 formula Annular Pedestrian Overpass, it is characterised in that: described monolithic Annular truss beam is 67.5 ° with the angle of horizontal plane.

Monolithic purlin the most according to claim 3 formula Annular Pedestrian Overpass, it is characterised in that: described upper arm Rib is parallel to horizontal plane, and the angle between described upper arm rib and underarm rib is 10 °～15 °.

Monolithic purlin the most according to claim 5 formula Annular Pedestrian Overpass, it is characterised in that: described upper arm Angle between rib and underarm rib is 12.5 °.

Monolithic purlin the most according to claim 5 formula Annular Pedestrian Overpass, it is characterised in that: described annular Tie-rod is sequentially connected with each cantilever cross rib and is linked together by each cantilever cross rib.

Monolithic purlin the most according to claim 1 formula Annular Pedestrian Overpass, it is characterised in that: this People's Bank of China sky Bridge also includes that several bridge piers, described bridge pier are " V " shape pier structure.

Monolithic purlin the most according to claim 1 formula Annular Pedestrian Overpass, it is characterised in that: this People's Bank of China sky Bridge also includes the floorings being laid on upper arm rib, and described floorings are profiled sheet structure or orthotropic Plate structure.

Monolithic purlin the most according to claim 9 formula Annular Pedestrian Overpass, it is characterised in that: this People's Bank of China sky Bridge also includes the guardrail being located at floorings medial and lateral.