CN205443896U - Batter post bridge - Google Patents

Abstract

The utility model discloses a batter post bridge, including bridge deck (4) and cushion cap (6), wherein, equally divide on each cushion cap (6) of bridge deck (4) both sides and do not set up two and indulge the vertical symmetries of bridge and be batter post (1) of V type to this two batter post (1) is along indulging the bridge to adopting tie rod (2) to be connected, stand (3) the support bridge face that sets up on batter post (1) of bridge deck (4) below is that (4) and/or batter post (1) above bridge deck (4) set up jib (5) support bridge face system (4), two double -phase neighbours batter post (1) is concretied or is articulated at the tip, the tip of batter post (1) at both ends adopts stand (3) and support (7) to support around bridge deck (4), perhaps adopts support (7) to support. The utility model discloses compare with span cable -stay bridge, arched bridge with other, rigidity increases substantially, and internal force reduces by a wide margin, construction process is simple, can adopt slip form construction, and the time limit for a project is shorter, and there is not the system conversion in the construction.

Description

Batter post bridge

Technical field

This utility model belongs to a kind of bridge structure form, particularly a kind of batter post bridge, is mainly used in bridge field.

Background technology

Arch bridge is two kinds of basic structure forms of arch and beam to be combined, common bearing load, gives full play to beam by curved, the structural behaviour of arch pressurized and compound action；Cable-stayed bridge is with bridge deck, drag-line, Sarasota, cushion cap, the basis bridge as Path of Force Transfer.The bridge multiplex both version of middle large span, in work progress, arch bridge is external stability extreme difference in naked arch, maximum cantilever state face, and wind resisting stability can be relatively low, and arch is the waste that curve causes material；CONSTRUCTION OF CABLE-STAYED BRIDGE complex process, the cycle is longer, and the long Suo Zhendong of suspension cable is obvious, affects the fatigue life of structure.

Utility model content

The purpose of this utility model is for above-mentioned problem, it is provided that a kind of batter post bridge.This batter post bridge structurally, is connected into V-type by two batter posts, is connected by many root systems bar between two batter posts, and bridge floor load passes to batter post by suspension rod or column；The stretching force of tie-rod is determined by the condition making batter post moment of flexure be zero, and its size is relevant with suspension rod power or column power, batter post deadweight and batter post inclination angle etc., namely makes this V-type post bridging become batter post bridge.Batter post bridge of the present utility model is with other compared with span cable-stayed bridge, arch bridge, and rigidity increases substantially, and internal force significantly reduces.

To achieve these goals, this utility model have employed techniques below scheme:

A kind of batter post bridge, including bridge deck and cushion cap；Wherein: two the most symmetrical and V-shaped batter posts of vertical bridge are set on each cushion cap of bridge deck both sides respectively, and these two batter posts are along indulging bridge to using tie-rod to be connected；Upright supports bridge deck is set on the batter post below bridge deck and/or the batter post above bridge deck arranges boom rest bridge deck；The most adjacent batter post consolidates in end；The end of the batter post in bridge deck rear and front end uses column and seat supports, or directly uses seat supports.

Further illustrating, the stretching force S of described tie-rod determines according to following formula:

S=(P+mg) tan α；Wherein, mg is the deadweight of batter post sections, and the power that P is suspension rod or column transmits, α is the angle of inclination of batter post.

The determination principle of tie-rod pulling force is: take a bit of as slider AB on brace, wherein: S is the stretching force of horizontal rope (tie-rod), mg is the deadweight of brace sections AB, the power that P is suspension rod or column transmits, then tied up to along balancing to obtain S cos α=(P+mg) sin α with brace axis vertical direction by power

Then: S=(P+mg) tan α；

The pulling force of the horizontal rope determined by conditions above, it is ensured that brace is only by axle power effect, or bears less moment of flexure, so that brace becomes batter post.

Further illustrating, described batter post uses concrete box type structure or uses steel box structure.When batter post uses concrete box type structure, construction technology uses slding form operation；When batter post uses steel box structure, construction technology uses self-bearing type lifting tiltedly to spell.

Further illustrating, the material that pours of described bridge deck uses C40 concrete；The material that pours of described cushion cap uses C25 concrete；Described suspension rod and tie-rod use steel pole respectively.

Compared with prior art, the beneficial effect that this utility model possesses:

Batter post bridge of the present utility model is with other compared with span cable-stayed bridge, arch bridge, and rigidity increases substantially, and internal force significantly reduces；Construction technology is simple, can use slding form operation, and the duration is shorter, and construction does not exist embodiment conversion.

Accompanying drawing explanation

Fig. 1 is the structural representation of deck type batter post bridge in this utility model.

Fig. 2 is the structural representation of base-supporting batter post bridge in this utility model.

Fig. 3 is the structural representation of half-through batter post bridge in this utility model.

Fig. 4 is batter post force analysis schematic diagram in this utility model.

Reference: 1-batter post, 2-tie-rod, 3-column, 4-bridge deck, 5-suspension rod, 6-cushion cap, 7-bearing.

Detailed description of the invention

With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.

Embodiment 1:

As it is shown in figure 1, a kind of (deck type) batter post bridge, including bridge deck 4 and cushion cap 6；Each cushion cap 6 of bridge deck 4 both sides arranges two the most symmetrical and V-shaped batter posts of vertical bridge 1 respectively, and these two batter posts 1 are connected to employing tie-rod 2 along vertical bridge；Batter post 1 is completely in the lower section of bridge deck 4, the batter post 1 below bridge deck 4 arranges column 3 and supports bridge deck 4；The most adjacent batter post 1 consolidates in end；Bearing 7 is directly used to support in the end of the batter post 1 of bridge deck 4 rear and front end.Described batter post 1 uses concrete box type structure.

As shown in Figure 4, the stretching force S of described tie-rod 2 determines according to following formula: S=(P+mg) tan α；Wherein, mg is the deadweight of batter post sections, and the power that P is suspension rod or column transmits, α is the angle of inclination of batter post section.

Embodiment 2:

As in figure 2 it is shown, a kind of (base-supporting) batter post bridge, including bridge deck 4 and cushion cap 6；Each cushion cap 6 of bridge deck 4 both sides arranges two the most symmetrical and V-shaped batter posts of vertical bridge 1 respectively, and these two batter posts 1 are connected to employing tie-rod 2 along vertical bridge；Bridge deck 4 is near the bottom of batter post 1, and the batter post 1 above bridge deck 4 arranges suspension rod 5 and supports bridge deck 4, the batter post 1 below bridge deck 4 arranges column 3 and supports bridge deck 4；The most adjacent batter post 1 consolidates in end；Column 3 and bearing 7 is directly used to support in the end of the batter post 1 of bridge deck 4 rear and front end.Described batter post 1 uses concrete box type structure.

The stretching force S of described tie-rod 2 determines according to following formula: S=(P+mg) tan α；Wherein, mg is the deadweight of batter post sections, and the power that P is suspension rod or column transmits, α is the angle of inclination of batter post.

Embodiment 3:

As it is shown on figure 3, a kind of (half-through) batter post bridge, including bridge deck 4 and cushion cap 6；Each cushion cap 6 of bridge deck 4 both sides arranges two the most symmetrical and V-shaped batter posts of vertical bridge 1 respectively, and these two batter posts 1 are connected to employing tie-rod 2 along vertical bridge；Bridge deck 4 is in the medium position of batter post 1, the batter post 1 below bridge deck 4 arranges column 3 and supports bridge deck 4, and the batter post 1 above bridge deck 4 arranges suspension rod 5 and supports bridge deck 4；The most adjacent batter post 1 consolidates in end；Column 3 and bearing 7 is directly used to support in the end of the batter post 1 of bridge deck 4 rear and front end.Described batter post 1 uses steel box structure.

The stretching force S of described tie-rod 2 determines according to following formula: S=(P+mg) tan α；Wherein, mg is the deadweight of batter post sections, and the power that P is suspension rod or column transmits, α is the angle of inclination of batter post.

Application example 1:

One batter post bridge, comprises 4 batter posts, 40 suspension rods, 20 root system bars, 2 piers (cushion cap)；Span 105m, batter post and bridge floor are 45° angle, and jump stay (tie-rod) and batter post are 45 ° of angles, and suspension rod and batter post are 45 ° of angles, and jump stay (tie-rod) and suspension rod have a common end points.The power of horizontal rope (tie-rod) is equal with suspension rod power, makes a concerted effort along batter post axial direction, and therefore, batter post is only by the pressure of axial direction.Batter post bridge total length 210m, main span 105m, bridge deck material uses C40 concrete；Girder (cushion cap) material uses C25 concrete；Suspension rod and tie-rod material are steel, use the circular cross-section of diameter 0.085m, and wherein, E=2.0600e+008KN/m2, unit weight is 92.32KN/m3, and Poisson's ratio is 0.3.

Building an arch bridge model and compare span 105m, arch rib, girder cross sectional dimensions and material are the most identical with the batter post of batter post bridge, and column cross-section uses the real abdomen rectangular cross-sectional of wide 6.1m, high 0.6m, and material selects C40 concrete.

Extraction result understands: under batter post bridge Gravitative Loads, main span maximum displacement: 3.183cm, and main span maximum stress occurs at main span side batter post root :-9.5Mpa；Under arch bridge model Gravitative Loads, maximum displacement: 5.015cm, maximum stress: 11.7Mpa, analysis result compares: compared with the arch bridge of identical span, and batter post bridge rigidity improves 36.34%, and internal force decreases 18.8%.

Application example 2:

Batter post bridge total length 400m, main span 200m, bridge deck material uses C40 concrete；Cushion cap material uses C25 concrete；Suspension rod and tie-rod material are steel, use the circular cross-section of diameter 0.085m, and wherein, E=2.0600e+008KN/m2, unit weight is 92.32KN/m3, and Poisson's ratio is 0.3.

Cable-stayed bridge total length 400m, main span 200m, bridge deck material uses C40 concrete；Tie-rod material uses C25 concrete；Drag-line material is steel, uses the circular cross-section of diameter 0.085m, and wherein, E=2.0600e+008KN/m2, unit weight is 92.32KN/m3, and Poisson's ratio is 0.3.

Extraction result understand: batter post post bridge under 25KN/m evenly load operating mode effect, main span maximum displacement: 1.883cm.Cable-stayed bridge only under 25KN/m Uniform Load, main span maximum displacement: 10.086cm.Compared with the cable-stayed bridge of identical span, batter post bridge rigidity improves 81.33%.

Claims (3)

1. a batter post bridge, including bridge deck (4) and cushion cap (6)；It is characterized in that: the two the most symmetrical and V-shaped batter post of vertical bridges (1) are set on each cushion cap (6) of bridge deck (4) both sides respectively, and these two batter posts (1) are connected to employing tie-rod (2) along vertical bridge；The batter post (1) of bridge deck (4) lower section arranges column (3) support bridge deck (4) and/or the batter post (1) in bridge deck (4) top arranges suspension rod (5) and supports bridge deck (4)；The most adjacent batter post (1) is in end consolidation or hinged；The end of the batter post (1) in bridge deck (4) rear and front end uses column (3) and bearing (7) to support, or directly uses bearing (7) to support.

Batter post bridge the most according to claim 1, it is characterised in that: the stretching force S of described tie-rod (2) determines according to following formula:

S=(P+mg) tan α；Wherein, mg is the deadweight of batter post sections, and the power that P is suspension rod or column transmits, α is the angle of inclination of batter post.

Batter post bridge the most according to claim 1, it is characterised in that: described batter post (1) uses concrete box type structure or uses steel box structure.