CN102234962A - Completely single-layered combined bridge consisting of four independent right-handed bifurcate bridges in shape of Bu (Chinese character) - Google Patents

Abstract

The invention discloses a completely single-layered combined bridge consisting of four independent right-handed bifurcate bridges in the shape of Bu (a Chinese character). The combined bridge is in a combined structure which is composed of four independent bifurcate arch bridges and enables a plurality of bridges at a crossroad to be uncrowded. Each bifurcate arch bridge has a straight-going arch bridge and a left-turn bridge, the left-turn bridge is positioned at the left side of the straight-going arch bridge, the left-turn bridge is separated from the straight-going arch bridge at the left-turn side thereof so as to form a bifurcate bridge in the shape of Bu (a Chinese character), and four bifurcate arch bridges are formed into four synclastically-bifurcate bridges in the shape of Bu (a Chinese character); and two synclastically-bifurcate bridges in the shape of Bu (a Chinese character) are formed into a branch combined bridge, and the one-way sections of two straight-going arch bridges of two branch combined bridges are formed into a three-dimensional cross structure. The combined bridge disclosed by the invention has the advantages that the degree of hazard (caused by local geological accidents) to the whole combined bridge is reduced; and the left-turn bridge can be used as a left-turn/right-turn shared bridge and has a wider bridge floor as a merged lane section, therefore, the situation of traffic congestion is not easily caused, and the vehicles can directly turn left without redundant detouring, so that a small crossroad of a dual 6-lane can be completely interchanged.

Description

The full individual layer composite bridge of four independences of right lateral system " fore-telling " font bifurcated bridge

Technical field

The invention belongs to the overpass bridge that makes the right-angled intersection automobile traffic unimpeded, particularly four independently the Y-shaped arch bridge be combined into the craspedodrome motor vehicle that can make the crossroad (hereinafter to be referred as: straightgoing vehicle) and the left-hand bend motor vehicle (hereinafter to be referred as the have no road occupying unimpeded combining structure of a plurality of bridges of conflict left turning vehicle).

Background technology

At present, the traffic of international and domestic usual friendship crossroad, arterial street is very crowded, often stops up, and is each metropolitan common fault of the whole world.Tracing it to its cause, is because the two road usual friendship, and on the crosspoint, two road are overlapping to have become a road, and the motor vehicles on the two road can only a shared road on node, has lost the path resource of half.Add pedestrian, bicycle and motor vehicle and mix row, the result that is inevitable blocks up.In order to solve this difficult problem, people have expected widening the road surface, increase the quantity of crossing runway, but the road surface can not be widened infinitely.People have expected overpass bridge again, but in existing upright civilian bridge design scheme, can make crossroad direct lane and left turn lane have no road occupying the conflict the overpass bridge minimum diameter more than 120 meters, not only build the cost height, and the crossroad of the two-way six-lane in old urban area all can not be built, make the crossroad traffic congestion of present old urban area very serious, the frequent traffic paralysis in the crossroad that has.

Chinese patent 200720043390.6 " the full unblocked overpass bridge of individual layer " discloses a kind of unimpeded combining structure associating bridge of directly striding a bridge and an annular bridge of establishing at the parting of the ways.Its shortcoming: the driver must see clearly operation sign at the parting of the ways, in case can not lane change after not seeing clearly or seeing clearly, can cause promptly advancing the traffic congestion of place, crossroad in the lane change crosspoint.----the road division standard of turning right is different from the road of existing left-hand rotation--craspedodrome---right-hand rotation and divides standard, and this has had little time lane change after making the driver near this overpass bridge in left-hand rotation in craspedodrome from inside to outside.In a word,----the road division standard of turning right is different from the road that has--craspedodrome---right-hand rotation now and divides standard, and this overpass bridge can not be used on the road that has standard now in left-hand rotation in the craspedodrome from inside to outside that this overpass bridge requires.

Chinese patent 200820230509.5 is " directly left, the right-hand rotation interchange overpass " a kind of overpass bridge disclosed, because the claims and the manual of this patent are very unclear to the description of technical scheme, but as if just structure and the defective that can understand this screen frame shape overpass bridge with Figure of description is: one, unwanted height and length have been increased: in by-path position, ground away from the crossroad, continuing one section pontic after the craspedodrome bridge passes below the left-hand bend bridge on opposite more just is connected with ground, make the overhead highly very high of upper layer bridge, increased the total length of bridge, make whole pontic not only high not only long but also big like this, waste bridge construction expense has been blocked civic landscape.Two, local damage causes whole the damage: after the left-hand bend bridge passes below the craspedodrome bridge of ground, left side by-path and left-hand bend bridge, with be connected with ground again after the lower bridge section of the craspedodrome bridge of ground, right side by-path flushes, also make the overhead highly very high of upper layer bridge, increased the total length of bridge, also make whole pontics be connected to a large-scale integral bridge, once the part of this large-scale integral bridge has geology to change, its part is damaged and just will causes whole large-scale integral bridges to damage.Three, whole bridge becomes screen frame shape area occupied too big: the global shape of overpass bridge is for there being two cornerwise screen frame shape pontics, requiring the crossroad not have the circular minimum diameter in vacant lot of building is 115 meters, and in the two-way six-lane crossroad of old urban area, diameter reaches 115 meters almost not having, and just the overpass bridge that provides of this Figure of description almost can not be used for two-way six-lane crossroad, old urban area.

Summary of the invention

The purpose of this invention is to provide the road track that meets existing right lateral system traffic specification arranges, small size crossroad at two-way six-lane can be built, four " fore-telling " font bifurcated bridges are combined into the conflict that has no road occupying of direct lane and left turn lane, and there is long merging track section in a plurality of tracks of leaving the crossroad and is difficult for the full individual layer freely-moving bridge of many bridges combined type of traffic congestion.

The present invention solves and intersects the design of road occupying conflict point and be: a plurality of conflict points of right-angled intersection plane traffic are divided into three kinds of conflict points: first kind is that the left turn lane on direct lane and opposite has the road occupying conflict; Second kind be four direct lanes be divided into two groups at the parting of the ways the central area have and intersect the road occupying conflict; The third is that the left turn lane has the road occupying of intersection to conflict with direct lane and the left turn lane that this left-turning pathways arrives the ground by-path.

Solve first kind, there is the technical scheme of road occupying conflict the left turn lane on direct lane and opposite: craspedodrome bridge and left-hand bend bridge on each ground by-path of right-angled intersection are one group, and every group last bridge end all is connected with same ground by-path.Two craspedodrome bridges of keeping straight on are separate relatively, make a craspedodrome bridge after striding across right-angled intersection, pass under the left-hand bend bridge of " fore-telling " font Y-shaped arch bridge on opposite through ground, solved direct lane and opposite the left turn lane intersect collision problem.This technical scheme has solved four road occupying conflict points.

Solve second kind, article four, direct lane be divided into two groups at the parting of the ways the central area have and intersect the technical scheme of road occupying conflict: the direct lane that travels that intersects becomes multilevel traffic in the centre at the parting of the ways, has solved four direct lanes traffic conflict problem of central area at the parting of the ways.This technical scheme has solved four road occupying conflict points.

Solve the third, to be the left turn lane with the direct lane of arrival ground by-path and left turn lane have intersects the technical scheme of road occupying conflict: the track, ground of leaving the crossroad that is communicated with the following bridge end of left-hand bend bridge, pass below the Y-shaped arch bridge [craspedodrome bridge and left-hand bend bridge] of the ground by-path that arrives from this left-hand bend bridge, solved the collision problem that intersects of the direct lane of left turn lane and the ground by-path of arrival and left turn lane.This technical scheme has solved eight road occupying conflict points.

Like this, the crossroad of plane traffic, four craspedodrome bridges and four 16 total road occupying conflict points of left-hand bend bridge have been realized multilevel traffic fully, no longer include the road occupying conflict point.

The design of the new function of the present invention: take ground and space for reduce composite bridge of the present invention as far as possible, traffic route fully can be identical the left-hand bend bridge and the right-hand bend bridge of ground, this left-hand bend bridge left side by-path, the width that the left and right merging bridge that travels with an energy rightabout, left and right commentaries on classics merge bridge can reduce width about 5.0 meters than the overall width of side by side two independent left-hand bend bridges and right-hand bend bridge.So, the mode that the present invention is two independent bridges without the disclosed left and right commentaries on classics of Figure of description of Chinese patent 200820230509.5 " direct left and right commentaries on classics interchange overpass " merges bridge and reaches and reduce the purpose that composite bridge takies ground and space but the left-hand bend bridge is designed to left and right commentaries on classics.

For having geology in the pontic position, the large-scale overpass bridge of avoiding Chinese patent 200820230509.5 " direct left and right commentaries on classics interchange overpass " accompanying drawing to provide changes, to the destruction of a part of pontic and the destruction that causes whole pontic, also avoid large-scale overpass bridge can not be used for the problem of the small-sized crossroad of two-way six-lane, old urban area, this large-scale overpass bridge that can not be connected is divided into four small-sized bifurcated in the same way " fore-telling " fonts fork bridges, each in the same way bifurcated " fore-tellings " font pitch the ground by-path that bridge is respectively the crossroad left turn lane and direct lane be provided.Just under the condition that can realize crossroad left turning vehicle and the unimpeded traffic of straightgoing vehicle, a large-scale overpass bridge is divided into four small-sized overpass bridges, can reduce geology greatly and change destructiveness, and make the destruction of indivedual small-sized overpass bridges not influence the structure and the use of other small-sized overpass bridge pontic.

The driving route that the present invention not only will solve the crossroad does not have the intersection collision problem, and also being provided at has sufficiently long merging track section on the ground level road that leaves the crossroad, solves the merging track and only has only a point and produce the problem of traffic congestion on bridge.The through vehicles of crossroad and left-hand bend vehicle not only will accomplish not have the road occupying conflict point, will accomplish that also the through vehicles, left-hand bend vehicle, right-hand bend vehicle from the Different Ground by-path has the merging track of a plurality of merging track points section leaving on the by-path of ground, crossroad.The present invention is located at ground merging the track section, is the rule that ground level road is divided though merge the track section, does not belong to the structure content of overpass bridge of the present invention, and the structure of overpass bridge of the present invention can make the ground by-path can obtain to merge the track section.And the disclosed screen frame shape of the Figure of description overpass bridge of Chinese patent 200820230509.5 " direct left and right commentaries on classics interchange overpass " can be regarded as at a plurality of pontics that leave cross friendship center in a some merging track, make through vehicles, left-hand bend vehicle and right-hand bend vehicle on bridge, have only one to merge the track point, this three tracks merge track point, the very easy consequence that blocks up that causes with one together on bridge on overpass bridge.And the present invention carries out the track merging with the merging track section that can be provided at the ground certain-length, can solve from the vehicle on the different pontics because of merging the too narrow too little traffic congestion problem that produces of track point.So, through vehicles and left-hand bend vehicle that the present invention not only can solve each bar ground by-path of crossroad have no road occupying unimpeded, can also solve when on a ground by-path, leaving the crossroad from the vehicle on the Different Ground by-path pontic, very well-to-do ground is arranged as merging the track section, the disclosed screen frame shape of the Figure of description overpass bridge of comparing Chinese patent 200820230509.5 has only a position to merge the track, and then the present invention can reduce at double because of merging the too narrow too little traffic congestion problem that produces of track point.

The design of new construction of the present invention:

One, the left-hand bend bridge does not pass left side bifurcated " fore-tellings " font fork bridge in the same way: with independently four in the same way bifurcated " fore-telling " font pitch bridge, divide prong composition facing each other two grouping bridges, two groups of straight bridge single file sections of two grouping bridges become three-dimensional decussation structure, but each in the same way the left-hand bend bridge of bifurcated " fore-telling " font fork bridge do not pass, do not stride across bifurcated in the same way " fore-telling " the font fork bridge on the left side, but the left-hand bend bridge is communicated with ground below the high position section of pitching bridge near bifurcated in the same way " fore-telling " font on the left side, vehicle on the left-hand bend bridge can be descended to ground, pass bifurcated in the same way " fore-telling " the font fork bridge on the left side from ground, this left-hand bend bridge is communicated with the right-turn lane of ground, left side by-path, vehicle on this right-turn lane can be realized turning right with the outside bridge floor of this bridge that turns left, and is this left-hand bend bridging a left side, the right-hand rotation combined bridge.

Two, the craspedodrome arch bridge does not pass the opposite left-hand bend bridge of bifurcated " fore-telling " font fork bridge in the same way: with independently four in the same way bifurcated " fore-tellings " font pitch bridge, divide prong composition facing each other two grouping bridges, four craspedodrome arch bridges of two grouping bridges respectively with the opposite in the same way bifurcated " fore-tellings " the font left-hand bend bridge of pitching bridge carry out multilevel traffic in by-path position, ground away from the crossroad.The shape of the curved bridge single file section in a left side is the arcuate structure that becomes three-dimensional decussate texture central area indent to two groups of straight bridge single file sections of two grouping bridges, with the grade separation position of other bridge also at ground by-path away from the center, crossroad, prolonged left-hand bend bridge length, thereby reduced the left-hand bend bridge and will take very large-area problem at the parting of the ways because of the bridge length that the gradient needs, the crossroad is only needed more than 65 meters the distance between the building of angular direction, just can satisfy the needs of left-hand bend bridge, also just can satisfy the present invention and make up the needs that freely-moving bridge takies ground and space.This just requires two of opposite face, and two craspedodrome arch bridges of bifurcated " fore-telling " font fork bridge rightabout driving are separate in the same way, need not same bridge, and vertical dislocation is arranged, promptly the ground upper bridge section of the straight bridge earth terminal of the lower bridge section of a craspedodrome arch bridge and that craspedodrome arch bridge of opposite rises jointly and between the bridge earth terminal spacing distance is arranged and not in same position, the straight bridge earth terminal of the lower bridge section of craspedodrome arch bridge is more near the center, crossroad, be straight bridge earth terminal as long as near the zone, high position, stage casing of opposite craspedodrome arch bridge or ground plane before this, just abdicate the superjacent air space in left side for opposite craspedodrome arch bridge, allow the left-hand bend bridge on opposite directly go out the curved bridge single file section in a left side, the multilevel traffic in addition the ground by-path at the parting of the ways of the left-hand bend bridge of realizing craspedodrome arch bridge and opposite at the side bifurcated that turns left.But straight bridge single file section is not passed the curved bridge single file section in a left side, opposite, makes the structure that does not have straight bridge single file section below the curved bridge single file section in a left side of this position and be one deck pontic.Center at the parting of the ways, two groups of straight bridge single file sections of two grouping bridges become multilevel traffic.On ground by-path away from the center, crossroad, ground of each curved bridge single file section in a left side prolongs track and all becomes multilevel traffic with bifurcated in the same way " fore-tellings " the font fork bridge of the ground by-path that turns left to be arrived, but bridge pitched in bifurcated in the same way " fore-telling " font of the ground by-path that the curved bridge single file section in a left side is not passed left-hand bend and arrived.

Structure of the present invention is:

1, the full individual layer composite bridge of four independences of right lateral system " fore-telling " font bifurcated bridge comprises four Y-shaped arch bridges, it is characterized in that:

Each Y-shaped arch bridge all has a craspedodrome arch bridge 2 and a left-hand bend bridge 3, left-hand bend bridge 3 is positioned at the left side of craspedodrome arch bridge 2, left-hand bend bridge 3 is all at a side and craspedodrome arch bridge 2 bifurcateds of turning left, this bifurcation is a bifurcation 15, make a craspedodrome arch bridge 2 and a left-hand bend bridge 3 form " fore-telling " font bifurcated bridge, then four Y-shaped arch bridges become four bifurcated " fore-telling " font fork bridges 1 in the same way;

Each in the same way the craspedodrome arch bridge 2 of bifurcated " fore-telling " font fork bridge 1 and left-hand bend bridge 3 have and play bridge earth terminal 4 jointly, and play bridge earth terminal 4 jointly to the section 14 side by side of two bridges between the bifurcation 15; At the fork of bifurcated " fore-telling " font in the same way zone, high position, bridge 1 stage casing, left-hand bend bridge 3 and craspedodrome arch bridge 2 bifurcateds; The zone, high position that left-hand bend bridge 3 leaves craspedodrome arch bridge 2 is bifurcated section 7; Craspedodrome arch bridge 2 also has a straight bridge earth terminal 5, and left-hand bend bridge 3 also also has a left-hand rotation bridge earth terminal 6; From bifurcation 15 to straight bridge earth terminal 5 is straight bridge single file section 8; From bifurcation 15 to left-hand rotation bridge earth terminal 6 is the curved bridge single file section 13 in a left side;

Divide prong relative two in the same way bifurcated " fore-tellings " font fork bridge 1 form a grouping bridge, four in the same way bifurcated " fore-telling " font pitch bridge 1 and form two grouping bridges respectively; 8 one-tenth three-dimensional decussate textures of two groups of straight bridge single file sections of two grouping bridges; Two grouping bridges are divided into two kinds of two embedded grouping bridges and separate type grouping bridges; In two embedded grouping bridges, two microscler straight bridge single file section 8-1 lay respectively at the opposite in the same way among the branch prong of bifurcated " fore-telling " font fork bridge 1; In the separate type grouping bridge, two the straight bridge single file of brachmorphy section 8-2 lay respectively at the both sides of the microscler straight bridge single file section 8-1 of two embedded grouping bridges; The curved bridge single file section 13 in a left side be positioned at bifurcated in the same way " fore-tellings " the font fork bridge 1 at place and left side in the same way bifurcated " fore-telling " font pitch between the bridge 1.

The turn left design feature of bridge 3 of the present invention makes left-hand bend bridge 3 become the shared bridge of left and right commentaries on classics, reduce the floor space of composite bridge central area: pitch between the bridge 1 in bifurcated in the same way " fore-tellings " the font fork bridge 1 that the curved bridge single file section 13 in a left side is positioned at the place and left side bifurcated " fore-tellings " font in the same way, and the left side of the bridge 3 that promptly turns left is bent bifurcated in the same way " fore-telling " font that bridge single file section 13 do not pass, do not stride across this left-hand bend bridge 3 left sides and pitched bridge 1.Left-hand rotation bridge earth terminal 6 is communicated with the right-turn lane of the ground by-path in left side, and the right-hand bend car of ground, left side by-path can directly use as the right-hand bend bridge with the outside of this left-hand bend bridge 3, realizes turning right.The left-hand rotation car of just adjacent ground by-path and right-hand rotation car can shared left-hand bend bridge 3 reach the purpose of turning separately, be to turn left car at the inboard bridge floor of left-hand bend bridge 3 by 8 one-tenth three-dimensional decussate textures of two groups of straight bridge single file sections, and the right-hand rotation car are at bridge floor in the outer part.The shared left-hand bend bridge 3 of left-hand rotation car and right-hand rotation car is realized and is turned right, than realizing and turn right still less taking the ground and the space of crossroad with left-hand rotation bridge and two bridges of right-hand rotation bridge, become the more composite bridge of miniaturization, help to use this composite bridge, also reduce the bridge construction expense in littler crossroad.

The present invention's length that the design feature of arch bridge 2 increase to merge the track of keeping straight on prevents traffic congestion: with independent discrete four two grouping bridges of bifurcated " fore-tellings " font fork 1 fen prong composition facing each other of bridge in the same way, two grouping bridges are divided into two kinds of pair embedded grouping bridges and separate type grouping bridges.The opposite curved bridge single file section 13 in a left side of bifurcated " fore-telling " font fork bridge 1 is not in the same way passed or do not striden across to the straight bridge single file section 8 of two kinds of grouping bridges, like this from the straight bridge earth terminal 5 of straight bridge single file section 8 from the through vehicles of bridge on ground, with from the left side in the same way 6 times bridges of left-hand rotation bridge earth terminal of bifurcated " fore-telling " font fork bridge 1 left-hand bend bridge 3 to the left-hand bend vehicle merging track on ground, promptly the through vehicles and the left-hand bend vehicle of bifurcated " fore-telling " font fork bridge 1 merge the track on ground in the same way from two, then can merge the track at long section in track, ground, rather than only be confined to a merging track point, can solve like this because of merging the too narrow too little very little traffic congestion problem that causes in site in track.

Bifurcated " fore-telling " font fork bridge 1 is meant that left-hand bend bridge 3 and craspedodrome arch bridge 2 have one section side by side in the same way, but left-hand bend bridge 3 has bifurcation 15 in the left side, zone, high position, stage casing of craspedodrome arch bridge 2.At near the left-hand bend bridge 3 the bifurcation 15 and craspedodrome arch bridge 2 sections the clear height more than 4.5 meters of closing the symbol traffic specification is arranged preferably, make and to pass through motor vehicles below it.Left-hand bend bridge 3 turns left to use as motor vehicles." in the same way " be meant that the left-hand bend bridge 3 of each " fore-telling " font fork bridge is all identical with the bifurcated direction of craspedodrome arch bridge 2, promptly each left-hand bend bridge 3 is all at the left side of craspedodrome arch bridge 2 bifurcated, the directly left-hand rotation with other any pontic grade separation.So one in the same way the global shape of bifurcated " fore-telling " font fork bridge 1 be: to play a bridge earth terminal 4 be side by side to bifurcation 15 common for left-hand bend bridge 3 and craspedodrome arch bridge 2, this side by side section be two bridges side by side sections 14.Craspedodrome arch bridge 2 behind the bifurcated is straight bridge single file section 8, and the left-hand bend bridge 3 behind the bifurcated is the curved bridge single file section 13 in a left side.

The craspedodrome arch bridge 2 of same bifurcated in the same way " fore-telling " font fork bridge 1 and a common bridge earth terminal 4 of left-hand bend bridge 3 can be zonules, and 3 the bridge points of 2 bridge points of arch bridge and left-hand bend bridge of then keeping straight on are in same area; In this same area, 3 bridge points of 2 bridge points of craspedodrome arch bridge and left-hand bend bridge can be same positions, or certain longitudinal separation is arranged.

Craspedodrome arch bridge 2 is the current bridges of two ground by-paths that are used for the crossroad opposite face, and " craspedodrome " is meant that motor vehicles arrive the meaning of opposite, crossroad road, and " craspedodrome " is not meant the shape of bridge, and is meant the purposes of bridge.

Left-hand bend bridge 3 is the left-hand bend bridges that are used for crossroad right-hand traffic system, and " left-hand bend " is that purposes is the meaning of turning left.

The bifurcated section 7 of left-hand bend bridge 3 is the bridge sections that are used for passing from ground from the motor vehicles of the craspedodrome arch bridge 2 on opposite current usefulness, there are motor vehicles to pass the height of needs below the height of bifurcated section 7 need satisfy, are preferably in zone, the high position bifurcated that satisfies traffic specification with craspedodrome arch bridge 2 so the left-hand bend bridge 3 of bridge 1 pitched in same bifurcated in the same way " fore-telling " font.

Left-hand rotation bridge earth terminal 6 preferably is positioned near the ground the bifurcation 15 of bifurcated in the same way " fore-telling " font fork bridge 1 of the ground by-path that left-hand bend will arrive, bifurcated in the same way " fore-tellings " the font fork bridge 1 of the ground by-path that left-hand bend will arrive is not passed, do not striden across to the curved bridge single file section 13 in a left side, pitches bridge 1 so that the left-hand bend motor vehicles pass bifurcated in the same way " fore-telling " font of the ground by-path that is arrived from ground.The left-hand bend motor vehicles on ground and right side in the same way 2 times through vehicles of bifurcated " fore-telling " font fork bridge 1 craspedodrome arch bridge to ground merge tracks, long ground, merging track section can be arranged, rather than have only one to merge the track point.Avoided the disclosed screen frame shape of Chinese patent 200820230509.5 Figure of description overpass bridge, make the through vehicles on left-hand bend vehicle and ground, the right side by-path merge the track, owing to the too narrow too little traffic congestion problem that produces of bridge floor that merges track point in the pontic position of two bridges.

The stage casing of bifurcated " fore-telling " font fork bridge 1 is provided with the zone, high position in the same way, so that from the right side in the same way the left-hand bend vehicle of bifurcated " fore-telling " font fork bridge 1 below it, pass behind ground from left-hand rotation bridge earth terminal 6, thereby realize this bifurcated " fore-tellings " font fork bridge 1 and left-hand bend vehicle energy multilevel traffic in the same way from the right side.

Grouping bridge is by minute prong relative two combining structure of bifurcated " fore-telling " font fork bridge 1 in the same way, and the straightgoing vehicle that travels as the rightabout of two ground by-paths of crossroad opposite face realizes keeping straight on and left turning vehicle is realized the composite bridge of left-hand bend.A crossroad needs two grouping bridges, 8 one-tenth three-dimensional decussate textures of two groups of straight bridge single file sections of two grouping bridges.

Two groups of straight bridge single file sections 8 that " cross " meaning of 8 one-tenth three-dimensional decussate textures of two groups of straight bridge single file sections of two grouping bridges does not limit two grouping bridges are an angle of 90 degrees intersection mutually, here " cross " is identical with " cross " implication of crossroad, promptly there is intersection in two roads of " cross " general reference, do not limit intersecting angle.So, if straight bridge single file section 8 has bending also still two groups of straight bridge single file sections 8 of two grouping bridges to be considered as decussate texture.The shape of stereo cross shape structure is meant overlooks observation above decussate texture, 8 one-tenth three-dimensional decussate textures of two groups of straight bridge single file sections of two grouping bridges, but two groups of straight bridge single file sections 8 up and down of two grouping bridges are not connected, and space length is up and down arranged, and it are current to satisfy motor vehicles.Though just having a bit between two straight bridge single files of brachmorphy of separate type grouping bridge section 8-2, distance does not have pontic, but from the approximate cross of their orthography of overall structure, though pontic does not have lap, also be that the stereo cross shape structure of space length is up and down arranged.

The optimum position of straight bridge earth terminal 5: optimum position be the straight bridge earth terminal 5 of microscler straight bridge single file section 8-1 near the opposite bifurcated section 7 below ground locations of bifurcated " fore-tellings " font fork bridge 1 in the same way, the straight bridge earth terminal 5 of the straight bridge single file of brachmorphy section 8-2 ground location below near the microscler straight bridge single file section 8-1 of pair embedded grouping bridges.As long as make its through vehicles can pass the bifurcated section 7 on opposite from ground, then the height of bifurcated section 7 can reduce as far as possible, promptly the height of one deck bridge.

The preferred structure of left-hand bend bridge 3: the curved bridge single file section 13 in the left side of left-hand bend bridge 3 is preferably to the arcuate structure of 8 one-tenth three-dimensional decussate textures of two groups of straight bridge single file sections central area of two grouping bridges indent.Satisfy the gradient for the length that prolongs the curved bridge single file section 13 in a left side and meet the traffic specification requirement, and take ground, crossroad or locus as far as possible less, and the arcuate structure that the turn fractions of bridge single file section 13 is arranged to concave is bent on a left side.This preferred structure makes the present invention can be used for having only more than 65 meters between place, diagonal angle, the crossroad building, and the small-sized crossroad of the above width in eight tracks is arranged between the building of two-way six-lane both sides, can both build combination freely-moving bridge of the present invention.This just makes the present invention can be used for the crossroad, arterial highway in old city, realizes that old arterial street crossroad straightgoing vehicle and left-hand rotation car that people wish have no road occupying unimpeded.

The curved bridge single file section 13 min. turning radius design in a left side of arc concaves: the central point with 8 one-tenth three-dimensional decussate textures of two groups of straight bridge single file sections of two grouping bridges is the center, same grouping bridge is L to two curved bridge single file section 13 relative beeline length in an arc left side of stereo cross shape structure centre indent, the min. turning radius of two curved bridge single file sections 13 in an arc left side is R, in the scope of 30.0 meters≤L≤80.0 meter, the relationship of L and R is: R=L ÷ 4+8.When L=60.0 rice, R=23.0 rice.L is long more, illustrates that the crossroad area is big more, and then turning radius R can be big more, and the curved bridge single file section 13 in an arc left side can be born the fast more travel speed of motor vehicle.

At the parting of the ways, because there is not intersection road occupying collision problem between the motor vehicles in the right-hand bend of right lateral system, not the subject matter that the present invention will solve so turn right.Turning right from ground can be without overpass bridge, but will have the road occupying of intersection to conflict with bicycle and pedestrian.For avoiding this intersection road occupying conflict, the outside of left-hand bend bridge 3 promptly can be widened in the left side, the right-hand bend car that is used for ground, left side by-path uses, and the bridge 3 that just turns left becomes the left turning vehicle of this ground by-path and the common combined bridge that uses of right-hand bend car of ground, left side by-path.The structure of left-hand bend bridge 3 is without any variation, just become left and right commentaries on classics combined bridge, it is unimpeded fully to make the present invention become four craspedodrome roads of crossroad, four left-turning pathways, four right-hand rotation bends, the full intercommunication composite bridge of neither one intersection road occupying conflict point has promptly been realized the unimpeded intercommunicated overpass in whole tracks, crossroad.But the disclosed screen frame shape of Chinese patent 200820230509.5 Figure of description overpass bridge will reach the unimpeded multilevel traffic in whole tracks, crossroad, is provided with the right-hand bend service bridge, and promptly turn right bridge and left-hand bend bridge are two graded crossing bridges side by side.According to the overpass bridge design specifications, the minimum widith of left and right commentaries on classics combined bridge of the present invention can be 10.0 meters, but the right-hand bend bridge of the disclosed screen frame shape of Chinese patent 200820230509.5 Figure of description overpass bridge and left-hand bend bridge minimum widith side by side are 15.0 meters.Consequently, the left and right commentaries on classics of one-sided realization, the present invention have reduced by 5.0 meters occupation of land width; And the whole composite bridge minimum of the present invention takies the circle in ground and space directly through 65.0 meters, and the circle that takies ground and space than the disclosed screen frame shape of Chinese patent 200820230509.5 Figure of description overpass bridge minimum has directly reduced by 10.0 meters width through 75.0 meters.This stand out of 10.0 meters, make composite bridge of the present invention can be used for the almost crossroad of any two-way six-lane, and have the crossroad of a lot of two-way six-lanes all can not use the disclosed screen frame shape of Chinese patent 200820230509.5 Figure of description overpass bridge.That is to say, make composite bridge of the present invention usability widely be arranged than the disclosed screen frame shape of Chinese patent 200820230509.5 Figure of description overpass bridge, composite bridge of the present invention can be solved outside any problem of the disclosed screen frame shape of Chinese patent 200820230509.5 Figure of description overpass bridge, can also solve the multilevel traffic problem of the indeterminable littler crossroad of Chinese patent 200820230509.5 Figure of description disclosed screen frame shape overpass bridge.

" left side " " right side " on the left side of the present invention or the right, the left side or the right side, right side, left side is meant that the people stands in common bridge earth terminal 4 positions of rising of some bifurcateds in the same way " fore-telling " font fork bridge 1, in the face of the stereo cross shape structure centre that two groups of straight bridge single file sections 8 of two grouping bridges are formed goes to judge " left side " or " right side ".

Two bridges of the present invention section 14 side by side comprise two tracks at least.

Track of the present invention or bridge are can pass through at least road or the bridge of a motor vehicle, but described track or bridge do not limit width, can increase width many cars side by side.

Craspedodrome arch bridge 2 of the present invention is meant that the travel direction of motor vehicles on bridge is to keep straight on to stride across the bridge of crossroad for purpose, but the ascents and descents that the level height meaning is arranged, so the shape of craspedodrome arch bridge 2 can be rectilinear form or curved shape, when actual bridge construction, the shape of craspedodrome arch bridge 2 is shaped as according to determining with ground level road.

Left-hand bend bridge 3 of the present invention is meant and is used to turn left the bridge that motor vehicles use.The left-hand rotation bridge of right lateral system is at the left side, high position of craspedodrome arch bridge 2 bifurcated, and the direction that left-hand bend bridge 3 is directly turned is left turned, and does not need to do unnecessary detouring from ground, the right by-path and ground, opposite by-path.

Left-hand bend bridge 3 of the present invention can also can be used as the right-hand bend bridge use of ground, this left-hand bend bridge 3 left side by-path only as turning left to use, and the bridge 3 that promptly turns left can be left and right turning combined bridge.

Right lateral system of the present invention refers to the traffic administration system that motor vehicles are kept to the right.

Intersection road occupying conflict of the present invention refers to the traffic conflict between the motor vehicles at the parting of the ways.

Zone, high position of the present invention is meant the pontic section of the following motor vehicles height that can pass through.

It is that " car " or " vehicle " of bicycle is meant motor vehicle or refers to motor vehicles that the present invention does not indicate.

Advantage of the present invention:

One, large-scale overpass bridge is divided into four small-sized " fore-telling " font overpass bridges, reduce the disaster degree that geology changes: the disclosed screen frame shape of the Figure of description overpass bridge of Chinese patent 200820230509.5 " direct left and right commentaries on classics interchange overpass " is a large-scale overpass bridge of integral body that is connected as a single entity, the total length of a large-scale overpass bridge of integral body is very long, floor space is very big, when in total length and floor space, there being geology to change, will produce this overpass bridge and destroy, cause whole large-scale overpass bridge not use, this crossroad access is paralysed fully.And the present invention above-mentioned whole large-scale overpass bridge is split as bifurcated in the same way " fore-telling " the font fork bridge that four independences are not connected is small-sized overpass bridge, finish the left-hand rotation of four the by-path by-paths in crossroad and the unimpeded function of keeping straight on respectively with these four small-sized overpass bridges, in identical driving speed per hour, identical technology such as pontic gradient ginseng is wanted under the condition, compare the large-scale screen frame overpass bridge of Chinese patent 200820230509.5 Figure of description, each small-sized overpass bridge of the present invention shortens 30-35% than the total length of present large-scale overpass bridge, and four small-sized overpass bridges take up an area of the gross area and reduce 30-50%; Seldom take ground by-path ground in addition, and the underground and aboveground space on this ground; The present invention has just reduced local damage greatly and has been directed at the whole degree of damaging; Because the present invention is four small-sized overpass bridges independently, even if having geology to change damages and can not use certain small-sized overpass bridge, also can not be directed at other bridge that is not connected is damaged, reduced geology so greatly and changed the economic loss that causes damage, the traffic of crossroad can not paralysed fully; In a word, the present invention than existing large-scale overpass bridge, greatly reduces the risk of geological disaster with small-sized overpass bridge.

Two, the left-hand bend bridge can be used as and the shared bridge of turning right: the left-hand rotation bridge earth terminal of left-hand bend bridge is connected with the right-turn lane of ground, left side by-path, and the left-hand bend bridge just can be used as the shared bridge of the right-hand bend car of ground, left side by-path.The minimum bridge deck width of the left-hand bend and the shared bridge of turning right will reduce about 5.0 meters than the overall width with left-hand rotation bridge and two independent bridges of right-hand rotation bridge.The left-hand rotation bridge of the disclosed screen frame shape of the Figure of description of Chinese patent 200820230509.5 overpass bridge and right-hand rotation bridge are two independent bridges.So the whole composite bridge minimum of the present invention takies the circle in ground and space directly through 65.0 meters, the circle that takies ground than the disclosed screen frame shape of Chinese patent 200820230509.5 Figure of description overpass bridge minimum has directly reduced by 10.0 meters width through 75.0 meters.Composite bridge then of the present invention can be used for littler crossroad, and is spendable wider.

Three, the vehicle that leaves the crossroad has the ground of broad as merging the track section: the through vehicles of bridge is kept straight on ground and is passed below bridge left-hand bend bridge pitched in bifurcated in the same way " fore-tellings " font on opposite under the straight bridge earth terminal of straight bridge single file section, with from the left side in the same way under the left-hand bend bridge of bifurcated " fore-telling " font fork bridge bridge to the left-hand bend vehicle merging track on ground, then can merge the track, avoid the disclosed screen frame shape of the Figure of description overpass bridge of Chinese patent 200820230509.5 on pontic, to merge the too little too narrow and traffic congestion problem that causes of lane position at long ground section.

Four, be same as the former circuit of plane traffic substantially and do not have unnecessary detouring: it is unimpeded that two-way six-lane crossroad craspedodrome motorway and the motor-driven road of left turning vehicle are had no road occupying, and solved the traffic congestion that produces because of the two road usual friendship at the parting of the ways, problem blocks the traffic.This is a kind of unnecessary circuit that detours that do not have, motor vehicles only have ascents and descents to be different from the plane traffic at the parting of the ways, and driving route is same as the driving route on the existing surface road that traffic lights are arranged substantially, do not change direction of traffic and the custom of people in the usual friendship crossroad, do not get lost because of unnecessary detouring in can current process at the parting of the ways, the engineering quantity of building bridge in addition is less than existing any intercommunicated overpass, saves the bridge construction engineering cost.

Five, the little crossroad of two-way six-lane can be used: the present invention only uses four combinations of " fore-telling " font Y-shaped arch bridge in the same way, it is unimpeded fully just to have realized that the crossroad has no road occupying and conflicts, reduced the length of bridge in a large number than the existing intercommunicated overpass that detours, floor space and space have been reduced in a large number, make it have only 65 meters two-way six-lane small size crossroad, city can realize that also grade separation is unimpeded at round diameter, promptly do not intersect the road occupying conflict point, also the section of interweaving not provides new design scheme for solving the global arterial street automobile traffic problem of blocking up.

Six, one deck bridge is only used in the multilevel traffic of through vehicles and left turning vehicle: no matter be the left-hand bend bridge of wearing the opposite under the through vehicles, or wear the craspedodrome bridge and the left-hand bend bridge in left side under the left-hand bend vehicle, still keep straight on and wear another group craspedodrome bridge under the bridge, all only use one deck overpass bridge.Littler to the civic landscape influence.

Inventive point of the present invention is:

One, establish same number, basic identical structure, discrete small-sized independent overpass bridge by the bar number of ground, crossroad by-path: the disclosed screen frame shape of the Figure of description overpass bridge of Chinese patent 200820230509.5 " direct left and right commentaries on classics interchange overpass " is a large-scale overpass bridge of integral body that is connected as a single entity, and the whole three-dimensional bridge of the various runways in crossroad is connected as one.And it is considered herein that, from the overpass bridge of Different Ground by-path after through the crossroad, overpass bridge unnecessary and from other ground by-path is connected, more can realize merging the track with vehicle from the overpass bridge of other ground by-path, sail out of this crossroad, also more difficult traffic congestion, so the present invention not interconnecting, make from the overpass bridge of Different Ground by-path four ground by-paths of crossroad use respectively four in the same way the small-sized overpass bridge of bifurcated " fore-telling " font, discretely be combined into a composite bridge.And the composite bridge of this four small-sized overpass bridges is preventing that geology from having changed, having widened the disclosed screen frame shape of the Figure of description overpass bridge that the aspects such as length that merge the track are better than Chinese patent 200820230509.5 " direct left and right commentaries on classics interchange overpass ".That is to say: from single comparison, the present invention is split as four small-sized " fore-telling " font overpass bridges to screen frame formula overpass bridge; From integral body relatively, the composite bridge of four small-sized " fore-telling " font overpass bridges becomes the little cross of floor space, rather than the wide screen frame shape of floor space.

Two, the pontic of craspedodrome bridge and left-hand bend bridge does not pass through mutually: this craspedodrome bridge does not pass, does not stride across the left-hand bend bridge on opposite, the left-hand bend bridge realization craspedodrome that just makes the vehicle on the craspedodrome bridge pass the opposite from ground; And the left-hand bend bridge does not pass, does not stride across left side the craspedodrome bridge and the left-hand bend bridge of bifurcated " fore-telling " font fork bridge in the same way, makes the vehicle on the left-hand bend bridge pass left side the craspedodrome bridge and the left-hand bend bridge of bifurcated " fore-telling " font fork bridge in the same way from ground.This structure makes through vehicles and the left turning vehicle on different bifurcated in the same way " fore-telling " the font fork bridges can realize merging the track on ground, as long as merge the merging track section that just can there be longer distance in the track on ground, be difficult for because of merging too little too narrow traffic congestion the in track, the disclosed screen frame shape of the Figure of description overpass bridge that has overcome Chinese patent 200820230509.5 " direct left and right commentaries on classics interchange overpass " merges the track and has only to merge the site, track and an easy problem that produces traffic congestion on overpass bridge.

Three, traffic conflict point is moved on to away from the by-path position of crossroad go multilevel traffic: the present invention is not the position that the road occupying conflict takes place to intersect at the plane traffic behavior, the i.e. position in the scope at the parting of the ways not, solution is from the direct lane and the left turn lane of Different Ground by-path, and the conflict of the intersection road occupying between the left turn lane, but creationary this two classes traffic conflict point is moved on to away from multilevel traffic transport solution conflict on four ground by-paths of crossroad, thereby can take the ground and the space of crossroad minimumly.This unimpeded structure requires to reduce greatly to the annular region floor area of crossroad.As long as between the building of ground by-path eight lane widths are arranged, just can build up combination freely-moving bridge of the present invention with the ground and the space of crossroad diameter more than 65 meters, the crossroad access of realizing old city six-lane is unimpeded, stops up the meaning that initiative is arranged for solving the little crossroad access in old urban area.

Four, on the by-path of the ground on two opposites, the ground of craspedodrome bridge prolongs the left-hand bend bridge of wearing the opposite under the track: keeping straight on relatively is two two-way craspedodrome arch bridges that rightabout is kept straight on, separate, not shared bridge; Be straight bridge earth terminal than the opposite in the same way bifurcated " fore-telling " font fork bridge common play the bridge earth terminal and more intersect the center near the stereo cross of two groups of craspedodrome arch bridges of two grouping bridges; Straight bridge earth terminal is near the opposite regional or ground connection before this in the high position of bifurcated " fore-tellings " font fork bridge in the same way, so straight bridge earth terminal has been reserved the opposite high position section leftward space of bifurcated " fore-telling " font fork bridge in the same way, allow the curved bridge single file section in a left side on opposite can be directly at the craspedodrome arch bridge bifurcated on left-hand bend one side and opposite, two bridge bifurcateds can directly turn left the left-hand bend vehicle and do not need unnecessary detouring, the vehicle that leaves straight bridge earth terminal can be passed from the turn left ground, bifurcated section below of bridge of opposite face, realize the multilevel traffic of through vehicles and opposite left-hand bend vehicle.

Five, the ground of left-hand bend bridge prolongs craspedodrome bridge and the left-hand bend bridge of wearing ground, left side by-path under the track: near the ground connection zone, high position of bifurcated in the same way " fore-telling " the font fork bridge on the left of the curved bridge single file section in a left side directly arrives by the left-hand bend direction, its ground prolongs the track and pitches the bridge multilevel traffic with bifurcated in the same way " fore-tellings " font in this zone, high position, and what just solved the straightgoing vehicle of the ground by-path that left-hand bend vehicle and left-hand bend will arrive and left turning vehicle intersects the road occupying collision problem.The left-hand bend vehicle does not detour, and has reduced unnecessary traffic conflict point.

Six, four do not have the grade separation structure between the pontic of bifurcated " fore-telling " font fork bridge in the same way, also just make four in the same way any position of the composite bridge portion that forms of bifurcated " fore-telling " font fork bridge have only one deck bridge, reduced the height of composite bridge extreme higher position, reduced influence, also reduced the expense of bridge construction civic landscape.

Description of drawings

Fig. 1 is bifurcated in the same way " fore-telling " the font fork bridge plane structure schematic diagram of microscler straight bridge single file section;

Fig. 2 is bifurcated in the same way " fore-telling " the font fork bridge plane structure schematic diagram of the straight bridge single file of brachmorphy section;

Fig. 3 is a plane structure schematic diagram of the present invention;

Fig. 4 is a perspective view of the present invention.

In the Figure of description, Meaning is a uphill lane, Meaning is parallel track,

Meaning is a descending lane.

Among the figure: the 1st, bridge, the 2nd pitched in bifurcated " fore-telling " font in the same way, craspedodrome arch bridge, the 3rd, left-hand bend bridge, the 4th plays bridge earth terminal, the 5th jointly, straight bridge earth terminal, the 6th, left-hand rotation bridge earth terminal, the 7th, bifurcated section, the 8th, straight bridge single file section, 8-1 are that microscler straight bridge single file section, 8-2 are the straight bridge single file of brachmorphy sections, the 13rd, the curved bridge single file section, 14 in a left side is two bridges sections, the 15th side by side, bifurcation.

The specific embodiment

The crossroad of embodiment 1, right-hand traffic system is by the full individual layer composite bridge of four independences of two right lateral systems that grouping bridge is formed " fore-telling " font bifurcated bridge.

As Fig. 1,2,3,4,

One, cross agent structure: there are four ground by-paths the crossroad, the ground by-path across structure of the ground by-path of two opposite faces and two other opposite face, and by-path top, four ground has bifurcated " fore-telling " font fork bridge 1 in the same way respectively.Divide prong relative two in the same way bifurcated " fore-tellings " font fork bridge 1 form a grouping bridge, four in the same way bifurcated " fore-tellings " font pitch bridge 1 and form two grouping bridges respectively, two grouping bridges are divided into two kinds of pair embedded grouping bridges and separate type grouping bridges.Four in the same way four common bridge earth terminals 4 that rise of bifurcated " fore-telling " font fork bridge 1 be communicated with the direct lane and the left turn lane of four ground by-paths respectively away from the crossroad.

Two, structure of bifurcated " fore-telling " font fork bridge 1 in the same way: each in the same way the craspedodrome arch bridge 2 of bifurcated " fore-tellings " font fork bridge 1 and left-hand bend bridge 3 have and play bridge earth terminal 4 jointly, and play bridge earth terminal 4 jointly to two bridges between the bifurcation 15 side by side sections 14; In the fork of bifurcated " fore-telling " font in the same way zone, high position, bridge 1 stage casing, left-hand bend bridge 3 is at a side and craspedodrome arch bridge 2 bifurcateds of turning left; The bifurcated section that left-hand bend bridge 3 leaves craspedodrome arch bridge 2 is a bifurcated section 7; Craspedodrome arch bridge 2 also has a straight bridge earth terminal 5, and left-hand bend bridge 3 also also has a left-hand rotation bridge earth terminal 6; From bifurcation 15 to straight bridge earth terminal 5 is straight bridge single file section 8; From bifurcated section 7 to left-hand rotation bridge earth terminal 6 is the curved bridge single file section 13 in a left side.

Three, straight bridge single file section 8 structures of two embedded grouping bridges: the straight bridge single file of each of two embedded grouping bridges section 8 strides across the crossroad and extend into the opposite in the same way among the branch prong of bifurcated " fore-telling " font fork bridge 1, and its earth terminal 5 is positioned near below the bifurcated section 7 on opposite.The orthography from the top down of two straight bridge single file sections 8 in two embedded grouping bridges becomes part shape side by side, and the people accounts on straight bridge single file section 8 a certain side ground and sees 8 one-tenth grade separation structures of these two straight bridge single file sections.

Four, straight bridge single file section 8 structures of separate type grouping bridge: in the separate type grouping bridge, microscler straight bridge single file section 8-1 is positioned at the opposite in the same way among the branch prong of bifurcated " fore-telling " font fork bridge 1, and its earth terminal 5 is positioned near below the bifurcated section 7 on opposite; The straight bridge single file of another brachmorphy section 8-2 is positioned at the place in the same way between the straight bridge single file section 8 of bifurcated " fore-telling " font fork bridge 1 and another grouping bridge, promptly two the straight bridge single file of brachmorphy section 8-2 have a segment distance not have pontic in the both sides of two microscler straight bridge single file section 8-1 of another grouping bridge between these two the straight bridge single file of brachmorphy section 8-2.

Five, the structure of left-hand bend bridge 3: its grade separation structure is: bifurcated section 7 is highest region sections.Left-hand rotation bridge earth terminal 6 is positioned near the ground, section below, high position of bifurcated " fore-telling " font fork bridge 1 in the same way, the left side, the left-hand bend motor vehicles from left-hand rotation bridge earth terminal 6 to ground, wear bifurcated in the same way " fore-telling " font of ground, left side by-path from underground and pitch bridge 1, the straightgoing vehicle on the ground by-path on the realization left-hand bend motor vehicles and the left side and the multilevel traffic of left turning vehicle.Its shape and structure is: in same bifurcated in the same way " fore-telling " the font fork bridge 1, the bifurcated section 7 of left-hand bend bridge 3 is at the left side bifurcated in zone, high position, craspedodrome arch bridge 2 stage casing.The right lateral system of being applicable to traffic rules motor vehicles enter the curved bridge single file section 13 realization left-hand bends in a left side from the shunting, the left side of craspedodrome arch bridge 2.The ground of left-hand rotation bridge earth terminal 6 prolong the track from bifurcated in the same way " fore-tellings " font on the left side pitch bridge 1 4.5 meters eminences of high position section headroom below pass.

Six, unimpeded combining structure: 2 one-tenth three-dimensional decussate textures of two groups of craspedodrome arch bridges of two grouping bridges.The craspedodrome arch bridge 2 of bifurcated " fore-telling " font fork bridge 1 and the common bridge earth terminal 4 that rises of left-hand bend bridge 3 are being communicated with the right side by-path of a ground by-path respectively away from the crossroad in the same way for each, each two bridge section 14 side by side lay respectively at above the right side by-path of a ground by-path, microscler straight bridge single file section 8-1 is respectively from striding across descending behind the center, crossroad in the air, extend into the opposite in the same way between the branch prong of bifurcated " fore-telling " font fork bridge 1, the straight bridge single file of brachmorphy section 8-2 does not stride across the center, crossroad and is communicated with ground with regard to descending, the pontic of the straight bridge single file of brachmorphy section 8-2 not with straight bridge single file section 8 graded crossing of another grouping bridge.Upper bridge section of each curved bridge single file section 13 in a left side is kept straight on along the top of this ground by-path scope, near the turning left again of crossroad, after the left-hand bend again along ground, left side by-path scope descending ground connection.

Seven, use the crossroad of present embodiment, the traffic route that the straight bridge single file of the separate type grouping bridge brachmorphy section 8-2 of lower floor goes up straightgoing vehicle is: certain ground by-path----plays bridge earth terminal 4----two bridges side by side among the section 14[figure jointly

]----craspedodrome arch bridge 2 and a left side curve the zone, high position, stage casing of bridge 3 bifurcateds, the arch bridge 2 of promptly keeping straight on reaches 4.5 meters headways [among the figure

] among----straight bridge single file section 8[figure

]----straight bridge earth terminal 5----ground prolongs the track and passes below two craspedodrome arch bridges 2 of another minute bridge group----ground prolong the track pass below the bifurcated section 7 of the curved bridge single file section 13 in bifurcated " fore-tellings " font fork bridge 1 left side in the same way from the opposite----arrive the opposite the ground by-path leave the track, crossroad, be implemented in the crossroad craspedodrome.

Eight, use the crossroad of present embodiment, the traffic route that the microscler straight bridge single file section 8-1 of the two embedded grouping bridge on upper strata goes up straightgoing vehicle is: certain ground by-path----plays bridge earth terminal 4----two bridges side by side among section 14[figure jointly

]----craspedodrome arch bridge 2 and a left side curve the zone, high position, stage casing of bridge 3 bifurcateds, the arch bridge 2 of promptly keeping straight on reaches 4.5 meters headways [among the figure ] leading portion of----microscler straight bridge single file section 8-1 is [among the figure

] continue climb altitude----and stride across the center, crossroad [among the figure ], and the back segment that 4.5 meters headways----microscler straight bridge single file section 8-1 arranged between lower floor's bridge is [among the figure

]----straight bridge earth terminal 5----ground prolong the track pass below the bifurcated section 7 of the curved bridge single file section 13 in bifurcated " fore-tellings " font fork bridge 1 left side in the same way from the opposite----arrive the opposite the ground by-path leave the track, crossroad, be implemented in the crossroad craspedodrome.

Nine, use the crossroad of present embodiment, the traffic route of left turning vehicle is: certain ground by-path----plays bridge earth terminal 4----two bridges side by side among the section 14[figure jointly

]----craspedodrome arch bridge 2 and a left side curve the zone, high position, stage casing of bridge 3 bifurcateds, the arch bridge 2 of promptly keeping straight on reaches 4.5 meters headways [among the figure

]----turn left and enter among the bifurcated section 7[figure ], wear from below the curved bridge single file section 13[figure in----left side from the prolongation track, ground of opposite straight bridge single file section 8

]----ground of the curved bridge single file section 13 in a left-hand bend bridge earth terminal 6----left side prolong the track below bifurcated in the same way " fore-tellings " the font fork bridge 1 of ground, left side by-path, pass----arrive the left side the ground by-path leave the track, crossroad, be implemented in the crossroad left-hand bend.

Ten, use the crossroad of present embodiment, the traffic route of right-hand bend car is: certain ground by-path----outside of the curved bridge single file section 13 in a left-hand bend bridge earth terminal 6----left side----outside of bifurcated section 7----craspedodrome arch bridge 2 and a left side curve bridge 3 bifurcateds zone, high position, stage casing the outside----two bridges side by side the section 14----ground by-path that arrives the right leave the track, crossroad, be implemented in the crossroad and turn right.

The crossroad of embodiment 2, right-hand traffic system, the full individual layer composite bridge of four independences of right lateral system " fore-telling " font bifurcated bridge of the arc that the curved bridge single file section in a left side is an indent.

The entire infrastructure that comprises embodiment 1, and the straight bridge earth terminal 5 of two embedded grouping bridges is near opposite bifurcated section 7 lower positions of bifurcated " fore-telling " font fork bridge 1 in the same way, and the straight bridge earth terminal 5 of separate type grouping bridge is at the lower position near the straight bridge single file section 8-1 of another grouping bridge.The curved bridge single file section 13 in a left side is the arcuate structures to 8 one-tenth three-dimensional decussate textures of two groups of straight bridge single file sections central area of two grouping bridges indent.Central point with 8 one-tenth three-dimensional decussate textures of two groups of straight bridge single file sections of two grouping bridges is the center, same grouping bridge is L to two curved bridge single file section 13 relative beeline length in an arc left side of stereo cross shape structure centre indent, the min. turning radius of these two curved bridge single file sections 13 in an arc left side is R, in the scope of 30.0 meters≤L≤80.0 meter, the relationship of L and R is: R=L ÷ 4+8.Present embodiment R=20.5 rice, L=50.0 rice, add 18.0 meters of the curved bridge single file section 13 width sums in two left sides, then only take diameter above the overpass bridge of the present embodiment ground at the parting of the ways and be 68.0 meters circular space zone, just can make the craspedodrome of crossroad and left-hand bend vehicle realize having no road occupying unimpeded.

Claims (4)

1. the full individual layer composite bridge of four independences of right lateral system " fore-telling " font bifurcated bridge, comprise four Y-shaped arch bridges, it is characterized in that: each Y-shaped arch bridge all has a craspedodrome arch bridge (2) and a left-hand bend bridge (3), left-hand bend bridge (3) is positioned at the left side of craspedodrome arch bridge (2), left-hand bend bridge (3) is all at a side and craspedodrome arch bridge (2) bifurcated of turning left, this bifurcation is bifurcation (15), make a craspedodrome arch bridge (2) and a left-hand bend bridge (3) form " fore-telling " font bifurcated bridge, then four Y-shaped arch bridges become four bifurcated " fore-telling " font fork bridges (1) in the same way;

Each in the same way the craspedodrome arch bridge (2) of bifurcated " fore-telling " font fork bridge (1) and left-hand bend bridge (3) have and play bridge earth terminal (4) jointly, and play bridge earth terminal (4) jointly to two bridges between the bifurcation (15) section (14) side by side; At the fork of bifurcated " fore-telling " font in the same way zone, bridge (1) high position, stage casing, left-hand bend bridge (3) and craspedodrome arch bridge (2) bifurcated; The zone, high position that left-hand bend bridge (3) leaves craspedodrome arch bridge (2) is bifurcated section (7); Craspedodrome arch bridge (2) also has a straight bridge earth terminal (5), and left-hand bend bridge (3) also also has a left-hand rotation bridge earth terminal (6); From bifurcation (15) to straight bridge earth terminal (5) is straight bridge single file section (8); From bifurcation (15) to left-hand rotation bridge earth terminal (6) is the curved bridge single file section (13) in a left side;

Divide prong relative two in the same way bifurcated " fore-tellings " font fork bridge (1) form a grouping bridge, four in the same way bifurcated " fore-telling " font pitch bridge (1) and form two grouping bridges respectively; Two groups of straight bridge single file sections (8) of two grouping bridges become three-dimensional decussate texture; Two grouping bridges are divided into two kinds of two embedded grouping bridges and separate type grouping bridges; In two embedded grouping bridges, two microscler straight bridge single file sections (8-1) lay respectively at the opposite in the same way among the branch prong of bifurcated " fore-telling " font fork bridge (1); In the separate type grouping bridge, two the straight bridge single file of brachmorphy sections (8-2) lay respectively at the both sides of the microscler straight bridge single file section (8-1) of two embedded grouping bridges; The curved bridge single file section (13) in a left side be positioned at bifurcated in the same way " fore-tellings " the font fork bridge (1) at place and left side in the same way bifurcated " fore-telling " font pitch between the bridge (1).

2. the full individual layer composite bridge of four independences of right lateral system according to claim 1 " fore-telling " font bifurcated bridge, it is characterized in that: the straight bridge earth terminal (5) of microscler straight bridge single file section (8-1) is near opposite bifurcated section (7) lower position of bifurcated " fore-telling " font fork bridge (1) in the same way, and the straight bridge earth terminal (5) of the straight bridge single file of brachmorphy section (8-2) is at microscler straight bridge single file section (8-1) lower position near two embedded grouping bridges.

3. the full individual layer composite bridge of four independences of right lateral system according to claim 1 " fore-telling " font bifurcated bridge is characterized in that: the curved bridge single file section (13) in a left side is the arcuate structure that becomes three-dimensional decussate texture central area indent to two groups of straight bridge single file sections (8) of two grouping bridges.

4. the full individual layer composite bridge of four independences of right lateral system according to claim 3 " fore-telling " font bifurcated bridge, it is characterized in that: becoming the central point of three-dimensional decussate texture with two groups of straight bridge single file sections (8) of two grouping bridges is the center, same grouping bridge is L to two an arc left side relative beeline length of curved bridge single file sections (13) of stereo cross shape structure centre indent, the min. turning radius of two curved bridge single file sections (13) in an arc left side is R, in the scope of 30.0 meters≤L≤80.0 meter, the relationship of L and R is: R=L ÷ 4+8.

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