CN205999766U - Laemodipodiform steel tubular type broken line arch bridge - Google Patents

Abstract

The utility model discloses a kind of laemodipodiform steel tubular type broken line arch bridge, it is characterised in that：Including beam structure, two main arch ribs and substructure, main arch rib is welded and is formed by tri linear arch and four Broken Line Archs, tri linear encircles the first steel pipe, tri linear encircles the second steel pipe and tri linear encircles the 3rd steel pipe and intersects related subgroup formation tri linear arch successively from beginning to end in obtuse angle, four Broken Line Archs are by four the first steel pipes of Broken Line Arch, four the second steel pipes of Broken Line Arch, the 3rd steel pipe of four Broken Line Archs and the 4th steel pipe of four Broken Line Archs intersect related subgroup successively from beginning to end in obtuse angle and are formed, the both sides of tri linear arch and four Broken Line Archs are through corresponding perforate on beam structure and tri linear arch is supported in substructure with the two ends arch springing of four Broken Line Archs, several hawser suspension rods that vertically arranges are linked with main arch rib.It is a kind of natural ring profile of simulation and the Nature combine together, the large span laemodipodiform steel tubular type broken line arch bridge bridge type of structural system reasonable stress.

Description

Laemodipodiform steel tubular type broken line arch bridge

Technical field

The utility model is related to bridge structure arch bridge technical field, and in particular to a kind of laemodipodiform steel tubular type Broken Line Arch Bridge.

Background technology

Arch bridge is to change most structures in all bridge systems, and its version is in different poses and with different expressions.Can divide by the shape of arch For skene arch, parabolic arch, Catenary arch, Broken Line Arch etc.；By the relative position of bridge floor and arch rib can be divided into Deck Arch Bridges, in Hold formula arch bridge, lower bearing arch bridge；Board-like arch, ribbed arch, box-shaped arch, truss arch, Rigid-framed arch can be divided into by the section form of arch rib；Press Stress can be divided into has thrust and nothing thrust system arch bridge, simple system arch bridge, combined system arch bridge etc..The loading characteristic of arch bridge It is that the axle power for producing vertical load is from vault to arch springing transmission, the vertical force being changed at arch springing and horizontal thrust.Thrust Presence or absence is the outstanding feature of difference arch and beam, and the structure that can produce horizontal thrust under every vertical uniform load q all can be described as Arch-type structure.

Ancient Chinese has the long history for building timber arch bridge and stone arch bridge, and the The Zhaozhou Bridge of Hebei province Zhao County is for now in the world The maximum ancient times stone arch bridge of the across footpath that remains, still preserves, on China Zhejiang, Fujian and other places, the wood arch that some period of Ming and Qing build Bridge taken advantage of by bridge, such as the thousand of Fujian Pingnan.

In Ancient Times in China timber arch bridge bridge construction history, have that a kind of west does not have and the exclusive timber arch bridge pattern of China passes through wood Arch bridge, also referred to as " Hongqiao ".As the condition such as less of the sectional dimension by the less and natural wood of timber bearing capacity is limited, ancient In generation, passes through the span of timber arch bridge and is generally no greater than 40m.In addition the limitation of ancient times bridge construction material is limited by, is passed through timber arch bridge and typically adopts Deck type structure, it is impossible to using half-through or base-supporting structure.

Therefore, broken line arch bridge will meet the traffic current function of modern bridge, landscape function, meet advanced technology, safety Requirement that is reliable, being suitable for durable, economical rationality, needs to overcome the problem of following several respects：

1st, ancient times pass through timber arch bridge and are limited typically using deck type structure by material, and city is typically built in physical features relatively flat Where, modern city bridge adopt arch bridge be mostly half-through or base-supporting structure, it is therefore desirable to solve bridges for Half-through or the adaptability problem of base-supporting structure.

2nd, Broken Line Arch had application on the roof structure of building construction or the aqueduct of water transport structure, but in highway or iron Apply on road and bridge beam few.The axis of arch bridge is usually curve, Broken Line Arch with straight Dai Qu, the portion of Broken Line Arch under outer load action Partial cross-section may produce larger moment of flexure, it is therefore desirable to solve the overall reasonable stress sex chromosome mosaicism of bridges.

3rd, ancient times pass through timber arch bridge for timber structure, between its rod member and rod member connect through iron nail or dowel is attached, Modern Steel Structure bridge is by being welded to connect, it is therefore desirable to which original internal constraint system for passing through timber arch bridge is reconstructed.

4th, limited by the sectional dimension condition such as less of the less and natural wood of timber bearing capacity, pass through timber arch bridge across Degree is generally no greater than 40m, and modern city bridge crosses over road, river needs bigger span ability, it is therefore desirable to increase bridge The span ability of structure.

5th, timber structure arch bridge is generally not present Local Stability Problem, the stability that such as then there is local compression using steel construction Problem.It is thus desirable to solving local power transmission and local stability problem.

6th, ancient times pass through timber arch bridge and have been thrust arch structure, and modern bridge is limited by place to be frequently necessary in foundation bearing capacity Longspan Bridge is built where not high, it is therefore desirable to which the Path of Force Transfer to passing through timber arch bridge is reconstructed, be improved to no push away Power or the arch-type structure of low thrust.

7th, recently as the construction of the development of China's mass transportation infrastructure construction, especially Urban Bridge, right The landscape function of bridge proposes requirements at the higher level, it is therefore desirable to solve for timber structure to be changed to after steel construction the fusion with natural landscape Sex chromosome mosaicism.

Utility model content

In place of the purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and provide a kind of laemodipodiform steel pipe purlin Formula broken line arch bridge.It is a kind of natural ring profile of simulation and the Nature combine together, the large span of structural system reasonable stress Laemodipodiform steel tubular type broken line arch bridge bridge type.

To achieve these goals, the utility model provides a kind of laemodipodiform steel tubular type broken line arch bridge, and its feature exists In：Including beam structure, it is located in two main arch ribs of beam structure both sides and for supporting under beam structure and main arch rib Portion's structure, the main arch rib are welded and are formed by tri linear arch and four Broken Line Archs, and the tri linear arch includes horizontally disposed three folding Line encircles the second steel pipe, is located at tri linear arch first steel pipe and tri linear arch of the second steel pipe of tri linear two in "eight" shape arrangement 3rd steel pipe, the tri linear encircle the first steel pipe, tri linear and encircle the second steel pipe and tri linear the 3rd steel pipe of arch successively from beginning to end in blunt Angle intersect related subgroup formed tri linear arch, four Broken Line Arch by four the first steel pipes of Broken Line Arch, four the second steel pipes of Broken Line Arch, four Head and the tail intersect related subgroup in obtuse angle and are formed successively for the 3rd steel pipe of Broken Line Arch and the 4th steel pipe of four Broken Line Archs, tri linear arch and The both sides of four Broken Line Archs are through corresponding perforate on beam structure and tri linear arch is supported on the two ends arch springing of four Broken Line Archs In substructure, several hawsers that vertically arranges are linked with the main arch rib on the side steel pipe of beam structure and are hung Bar, the other end connection beam structure of the hawser suspension rod.

Further, the tri linear arch is identical with the span of four Broken Line Archs, and the tri linear encircles the first steel pipe and three foldings Line encircles the 3rd steel pipe and is symmetricly set on the both sides that tri linear encircles the second steel pipe, four Broken Line Archs, second steel pipe and four Broken Line Archs the Three steel pipes are arranged symmetrically, and four Broken Line Archs, first steel pipe and the 4th steel pipe of four Broken Line Archs are arranged symmetrically, tri linear arch and The vertical center line of four Broken Line Archs overlaps, and the tri linear encircles and four Broken Line Arch related subgroup.

Further, the tri linear arch and four Broken Line Archs intersect to form circumferentially disposed five triangular structure, four fold Line encircles the first steel pipe and four the second steel pipes of Broken Line Arch are located at the both sides that tri linear encircles the first steel pipe, and tri linear encircles the first steel pipe and three The second steel pipe of Broken Line Arch is located at the both sides of four the second steel pipes of Broken Line Arch, four the second steel pipes of Broken Line Arch and the 3rd steel pipe position of four Broken Line Archs Encircle the both sides of the second steel pipe in tri linear, tri linear encircles the second steel pipe and tri linear encircles the 3rd steel pipe and is located at the 3rd steel of four Broken Line Archs The both sides of pipe, the 3rd steel pipe of four Broken Line Archs and the 4th steel pipe of four Broken Line Archs are located at the both sides that tri linear encircles the 3rd steel pipe, five institutes State and truss-like auxiliary steel pipe between the arch of the tri linear in triangular structure and the steel pipe of four Broken Line Archs, is welded with, the truss-like is auxiliary Steel pipe is helped to form N shape truss structure in vertical and oblique interlaced arrangement successively along longitudinal direction.

Further, the hawser suspension rod is arranged at the truss-like auxiliary steel pipe of vertical arrangement.

Further, several horizontally disposed steel pipe stulls are welded between two main arch ribs.

Further, the steel pipe stull is located at the steel pipe infall of tri linear arch and four Broken Line Archs.

Further, the beam structure includes steel case binder, gooseneck, steel longeron and Orthotropic Steel Bridge Deck, institute Steel case binder is stated along full-bridge both sides horizontally set, between two steel case binders, several goosenecks has been arranged laterally at a spacing, Longitudinally spaced between two steel case binders it is disposed with several steel longerons, the gooseneck and steel longeron cross weld, institute State steel case binder, gooseneck and steel longeron upper limb alignment, the Orthotropic Steel Bridge Deck be laid on steel case binder, gooseneck and On steel longeron, the outside of two steel case binders is all welded with steel construction and chooses arm.

Further, the substructure includes trapezoidal concrete saddle, the concrete bearing platform of rectangle and insertion ground end Pile foundation, the two ends arch springing of the tri linear arch and four Broken Line Archs are fixed on concrete saddle, and the tri linear encircles and four fold Line arch is mutually welded with the tapping of beam structure.

Further, the both sides of the concrete saddle are provided with concrete filled steel tube battered leg obliquely and concrete filled steel tube is oblique In the end Transducers Embedded in Concrete skewback of leg, the concrete filled steel tube battered leg is welded with beam structure, is erected on the concrete saddle Directly be provided with the end Transducers Embedded in Concrete skewback of two steel pipe posts being arranged side by side and steel pipe post, the steel pipe post with Steel pipe post bearing is provided between beam structure, is welded between two corresponding steel pipe posts positioned at beam structure both sides There is horizontally disposed steel pipe stull.

Further, at the steel pipe cross weld of the main arch rib and main arch rib fastener for connection hawser suspension rod position Place is equipped with ring stiffener, and the ring stiffener is located in steel pipe.

Further, the broken line arch bridge using being all equidistantly provided with ring mark on the outer wall of steel pipe.

Further, the tri linear encircles the first steel pipe, tri linear and encircles the second steel pipe and tri linear the 3rd length of steel pipe of arch Proportionate relationship is 11:20:11, it is 134 ° that tri linear encircles the first steel pipe and tri linear and encircles the angle of the second steel pipe, tri linear arch the The angle that two steel pipes encircle the 3rd steel pipe with tri linear is 134 °, four the first steel pipes of Broken Line Arch, four the second steel pipes of Broken Line Arch, four broken lines The length ratio relation for encircleing the 3rd steel pipe and the 4th steel pipe of four Broken Line Archs is 5:17:17:5, four the first steel pipes of Broken Line Arch and four fold It is 132 ° that line encircles the angle of the second steel pipe, and the angle of the 3rd steel pipe of four Broken Line Archs and the 4th steel pipe of four Broken Line Archs is 132 °, four fold It is 141 ° that line encircles the second steel pipe and the angle of the 3rd steel pipe of four Broken Line Archs.

The utility model has the advantage that as follows：Tri linear is encircleed and four by designed laemodipodiform steel tubular type broken line arch bridge The folded spell shape of Broken Line Arch becomes main arch rib, and aids in steel pipe to improve the stress of main arch rib by arranging truss-like, creates a kind of new Arcuately bridge type.The span of the structural system is increased the long-span arch bridge for adapting to span 200m or so for it, creates one kind New arcuately bridge type -- laemodipodiform steel tubular type broken line arch bridge.

Secondly, designed laemodipodiform steel tubular type broken line arch bridge passes through ancient times deck type during timber arch bridge structure of modification is and holds Formula structural system, its towering huge fold-line-shaped arch structure is large and spectacular, beautiful design, can form huge visual impact, Significant Landscape Architecture is easily formed, can require extensively to apply in higher Urban Bridge in landscape.

Again, designed laemodipodiform steel tubular type broken line arch bridge will pass through wood by arranging concrete filled steel tube battered leg in ancient times Arch bridge is nothing thrust or low thrust arch structure by there is thrust structure of modification, allows the bridge-type structure not high in foundation bearing capacity Area application.

Additionally, designed laemodipodiform steel tubular type broken line arch bridge is welded with a pair at interval of certain distance local on steel pipe Respectively " steel ring of (" shape and " ＜ " shape forms ring, simulates natural ring profile, and full-bridge is just as by a green in section Green bamboo be spliced so that the new bridge type is combined together with the Nature.

Description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the overlooking the structure diagram of Fig. 1.

The structural representation that Fig. 3 encircles for tri linear.

Fig. 4 is the structural representation of four Broken Line Archs.

Fig. 5 is the structural representation of main arch rib.

Fig. 6 is the A-A sectional view of Fig. 1.

Fig. 7 is the B-B sectional view of Fig. 1.

Fig. 8 is the E-E sectional view of Fig. 1.

Fig. 9 is the structural representation of laemodipodiform steel pipe.

Figure 10 is the cross section structure diagram of Fig. 9.

In figure, 1- tri linear encircle the first steel pipe, and 2- tri linear encircles the second steel pipe, and 3- tri linear encircles the 3rd steel pipe, 4- four fold Line encircles the first steel pipe, tetra- the second steel pipe of Broken Line Arch of 5-, the 3rd steel pipe of tetra- Broken Line Arch of 6-, the 4th steel pipe of tetra- Broken Line Arch of 7-, 8- truss Formula aids in steel pipe, 9- hawser suspension rod, 10- steel case binder, 11- concrete filled steel tube battered leg, 12- steel pipe post, 13- concrete arch Seat, 14- concrete bearing platform, 15- pile foundation, 16- abutment pier, 17- steel pipe stull, 18- gooseneck, 19- steel longeron, 20- are orthogonal different Property steel bridge deck, 21- steel construction chooses arm, and 22- ring stiffener, 23- first bend steel ring, and 24- second bends steel ring, 25- steel Tube column bearing, 26- steel strand wires flexibility tie-rod rope, 27- tri linear encircle, tetra- Broken Line Arch of 28-, 29- main arch rib, 30- beam structure, 31- substructure.

Specific embodiment

Describe performance of the present utility model below in conjunction with the accompanying drawings in detail, but it is not constituted to limit of the present utility model Fixed, only illustrate.While by explanation, advantage of the present utility model will become clearer from easy to understand.

As shown in Figures 1 to 5：A kind of laemodipodiform steel tubular type broken line arch bridge, it is characterised in that：Including beam structure 30, The substructure 31 being located in two main arch ribs 29 of 30 both sides of beam structure and for supporting beam structure 30 and main arch rib 29, The main arch rib 29 is welded and is formed by tri linear arch 27 and four Broken Line Archs 28, and the tri linear arch 27 includes horizontally disposed three folding Line encircles the second steel pipe 2, is located at tri linear arch first steel pipe 1 and three foldings of 2 two of the second steel pipe of tri linear in "eight" shape arrangement Line encircles the 3rd steel pipe 3, and the tri linear encircles the first steel pipe 1, tri linear the second steel pipe 2 of arch and tri linear encircles the 3rd steel pipe 3 successively Head and the tail intersect related subgroup in obtuse angle and form tri linear arch 27, and four Broken Line Arch 28 is by four Broken Line Arch the first steel pipes 4, four broken lines Head and the tail intersect related subgroup shape in obtuse angle successively to encircle the second steel pipe 5, the 3rd steel pipe 6 of four Broken Line Archs and the 4th steel pipe 7 of four Broken Line Archs Become, the both sides of the tri linear arch 27 and four Broken Line Archs 28 pass through corresponding perforate and tri linear 27 Hes of arch on beam structure 30 The two ends arch springing of four Broken Line Archs 28 is supported in substructure 31, the side steel pipe of close beam structure 30 on the main arch rib 29 On be linked with the hawser suspension rod 9 of several vertical arrangements, the other end connection beam structure 30 of the hawser suspension rod 9.? In the present embodiment, the tri linear arch 27 is identical with the span of four Broken Line Archs 28, and the tri linear encircles the first steel pipe 1 and tri linear Encircle the 3rd steel pipe 3 and be symmetricly set on the both sides that tri linear encircles the second steel pipe 2, four Broken Line Archs, second steel pipe 5 and four Broken Line Archs 3rd steel pipe 6 is arranged symmetrically, and four Broken Line Archs, first steel pipe 4 and the 4th steel pipe 7 of four Broken Line Archs are arranged symmetrically, the tri linear The vertical center line of arch 27 and four Broken Line Archs 28 overlaps, and the tri linear encircles 27 and four Broken Line Archs, 28 related subgroup.

As shown in Fig. 2 being welded with several horizontally disposed steel pipe stulls 17 between two main arch ribs 29.Wherein, The steel pipe stull 17 is located at the steel pipe infall of tri linear arch 27 and four Broken Line Archs 28.In actual applications, steel pipe stull 17 Required according to bridge stability, adjustment arranges quantity.

As shown in Fig. 3, Fig. 4, Fig. 5, tri linear encircles the first steel pipe 1, tri linear and encircles the second steel pipe 2 and tri linear the 3rd steel of arch 3 length ratio relation of pipe is 11:20:11, the angle that the first steel pipe of tri linear arch 1 encircles the second steel pipe 2 with tri linear is 134 °, three The angle that the second steel pipe of Broken Line Arch 2 encircles the 3rd steel pipe 3 with tri linear is 134 °, four Broken Line Arch the first steel pipes 4, four Broken Line Archs second The length ratio relation of steel pipe 5, the 3rd steel pipe 6 of four Broken Line Archs and the 4th steel pipe 7 of four Broken Line Archs is 5:17:17:5, four Broken Line Archs The angle of the first steel pipe 4 and four the second steel pipes of Broken Line Arch 5 is 132 °, the 3rd steel pipe 6 of four Broken Line Archs and the 4th steel pipe 7 of four Broken Line Archs Angle be 132 °, the angle of four Broken Line Arch the second steel pipes 5 and the 3rd steel pipe 6 of four Broken Line Archs is 141 °.

As shown in Figure 1, shown in Figure 5, the tri linear arch 27 and four Broken Line Archs 28 intersect to form circumferentially disposed five triangle Structure, four Broken Line Arch the first steel pipes 4 and four the second steel pipes of Broken Line Arch 5 are located at the both sides that tri linear encircles the first steel pipe 1, and tri linear encircles First steel pipe 1 and the second steel pipe of tri linear arch 2 are located at the both sides of four the second steel pipes of Broken Line Arch 5, four the second steel pipes of Broken Line Arch 5 and four The 3rd steel pipe 6 of Broken Line Arch is located at the both sides that tri linear encircles the second steel pipe 2, and tri linear encircles the second steel pipe 2 and tri linear encircles the 3rd steel Pipe 3 is located at the both sides of the 3rd steel pipe 6 of four Broken Line Archs, and the 3rd steel pipe 6 of four Broken Line Archs and the 4th steel pipe 7 of four Broken Line Archs are located at tri linear Encircle the both sides of the 3rd steel pipe 3, weld between tri linear in five triangular structures arch 27 and the steel pipe of four Broken Line Archs 28 There is truss-like auxiliary steel pipe 8, the truss-like auxiliary steel pipe 8 forms N shape purlin in vertical and oblique interlaced arrangement successively along longitudinal direction Frame structure.The hawser suspension rod 9 is arranged at the truss-like auxiliary steel pipe 8 of vertical arrangement.Truss-like auxiliary steel pipe 8 is according to quiet The stress of fixed structure system needs diagonally disposed, formation N shape truss structure.

As shown in Fig. 6, Fig. 8, at the steel pipe cross weld of the main arch rib 29 and main arch rib 29 fastener for connection hawser Ring stiffener 22 is equipped with the position of suspension rod 9, and the ring stiffener 22 is located in steel pipe.Ring stiffener 22 ensures steel The local pressure of pipe meets requirement.

As shown in Fig. 6, Fig. 7, Fig. 8, the beam structure 30 includes steel case binder 10, gooseneck 18, steel longeron 19 and just Different in nature steel bridge deck 20 is handed over, the steel case binder 10 is along full-bridge both sides horizontally set, horizontal between two steel case binders 10 Arranged for interval has several goosenecks 18, and gooseneck 18 adopts inverse-T-shaped section welded steel structure, two steel case binders 10 Between longitudinally spaced be disposed with several steel longerons 19, steel longeron 19 adopt less inverse-T-shaped section welded steel structure.Described Gooseneck 18 and 19 cross weld of steel longeron, the steel case binder 10, gooseneck 18 and the alignment of 19 upper limb of steel longeron, described orthogonal Different in nature steel bridge deck 20 is laid on steel case binder 10, gooseneck 18 and steel longeron 19, the outside of two steel case binders 10 All it is welded with steel construction and chooses arm 21.

As shown in Figure 1, Figure 7 shows, the substructure 31 include trapezoidal concrete saddle 13, rectangle concrete bearing platform 14 and The pile foundation 15 of insertion ground end, the two ends arch springing of the tri linear arch 27 and four Broken Line Archs 28 are fixed on concrete saddle 13, The tri linear encircles 27 tappings with four Broken Line Archs 28 with beam structure 30 and mutually welds.Two skew backs of the concrete saddle 13 Set up in the end Transducers Embedded in Concrete skewback 13 of concrete filled steel tube battered leg 11 and concrete filled steel tube battered leg 11, the steel pipe Concrete battered leg 11 is welded with beam structure 30, is vertically arranged with two steel pipes being arranged side by side and stands on the concrete saddle 13 In the end Transducers Embedded in Concrete skewback 13 of post 12 and steel pipe post 12, it is provided between the steel pipe post 12 and beam structure 30 Steel pipe post bearing 25.It is welded between two corresponding steel pipe posts 12 positioned at 30 both sides of beam structure horizontally disposed Steel pipe stull 17.In the present embodiment, some steel strand wires flexibility tie-rod ropes 26, institute are arranged at intervals with the steel case binder 10 State and under beam structure 30, be additionally provided with abutment pier 16.Wherein, setting up for concrete filled steel tube battered leg 11 exists in order to ensure this broken line arch bridge The adaptability in the not high area of foundation bearing capacity, needs to reduce the horizontal thrust on the lower basis of external load effect.In two end bays 11 upper end of concrete filled steel tube battered leg and the flexible tie-rod rope 26 of 30 rigid solder position tension steel strand of beam structure, mixed by steel pipe The power of this sensing span centre is passed to beam structure 30 by solidifying soil battered leg 11, you can active balance main arch rib 29 reaches beam structure 30 Horizontal thrust point to end bay, reduce the horizontal thrust that the lower basis of external load effect is subject to.In order to reduce concrete filled steel tube battered leg Moment of flexure suffered by the beam structure 30 of 11 tops, is vertically arranged with two steel pipe posts 12 being parallel to each other on concrete saddle 13 The beam structure 30 of top is supported, in 12 lower end of steel pipe post insertion concrete saddle 13, by connection and the coagulation of shear connector Native skewback 13 is formed and is rigidly connected, and concrete filled steel tube battered leg 11 is integral with 12 lower end rigid solder of steel pipe post.

As shown in Figure 9, Figure 10, the broken line arch bridge using being all equidistantly provided with ring mark on the outer wall of steel pipe. First bending steel ring 23 and the second bending steel ring 24 form a ring mark, and the first bending steel ring 23 is in " ＜ " shape, described Second bending steel ring 24 is in " (" shape, the bending place arc-shaped transition of the second bending steel ring 24, outer wall of steel pipe are painted with emerald green painting Material, the first bending steel ring 23, second bend steel ring 24, first and bend the outer wall of steel pipe between steel ring 23 and the second bending steel ring 24 It is painted with blacking.

The above, specific embodiment only of the present utility model, it is noted that any be familiar with those skilled in the art Member in the technical scope disclosed by the utility model, the change or replacement that can readily occur in, all should cover in the utility model Protection domain within.Other belong to well known to a person skilled in the art prior art without the content for describing in detail.

Claims (12)

1. a kind of laemodipodiform steel tubular type broken line arch bridge, it is characterised in that：Including beam structure (30), it is located in beam structure (30) two main arch ribs (29) of both sides and the substructure (31) for supporting beam structure (30) and main arch rib (29), described Main arch rib (29) is formed by tri linear arch (27) and four Broken Line Archs (28) welding, and tri linear arch (27) includes horizontally disposed Tri linear encircles the second steel pipe (2), is located at tri linear arch first steel pipe of tri linear the second steel pipe (2) two in "eight" shape arrangement (1) and tri linear encircles the 3rd steel pipe (3), the tri linear encircles the first steel pipe (1), tri linear and encircles the second steel pipe (2) and tri linear Head and the tail intersect related subgroup in obtuse angle and form tri linear arch (27) successively to encircle the 3rd steel pipe (3), and four Broken Line Archs (28) are by four The first steel pipe of Broken Line Arch (4), four the second steel pipe of Broken Line Archs (5), the 3rd steel pipe (6) of four Broken Line Archs and the 4th steel pipe of four Broken Line Archs (7) intersect related subgroup successively from beginning to end in obtuse angle to be formed, the both sides of tri linear arch (27) and four Broken Line Archs (28) pass through beam The two ends arch springing of the upper corresponding perforate of portion's structure (30) and tri linear arch (27) and four Broken Line Archs (28) is supported on substructure (31), on, described main arch rib (29) are upper to be linked with several steel wires that vertically arranges on the side steel pipe of beam structure (30) Rope suspension rod (9), other end connection beam structure (30) of hawser suspension rod (9).

2. laemodipodiform steel tubular type broken line arch bridge according to claim 1, it is characterised in that：Tri linear arch (27) and The span of four Broken Line Archs (28) is identical, and the tri linear encircles the first steel pipe (1) and tri linear encircles the 3rd steel pipe (3) and is symmetricly set on Tri linear encircles the both sides of the second steel pipe (2), four Broken Line Archs, second steel pipe (5) and the symmetrical cloth of the 3rd steel pipe (6) of four Broken Line Archs Put, four Broken Line Archs, first steel pipe (4) and the 4th steel pipe (7) of four Broken Line Archs are arranged symmetrically, the tri linear encircles (27) and four The vertical center line of Broken Line Arch (28) overlaps, and the tri linear encircles (27) and four Broken Line Archs (28) related subgroup.

3. laemodipodiform steel tubular type broken line arch bridge according to claim 2, it is characterised in that：Tri linear arch (27) and Four Broken Line Archs (28) intersect to form circumferentially disposed five triangular structure, four the first steel pipe of Broken Line Archs (4) and four Broken Line Archs Two steel pipes (5) are located at the both sides that tri linear encircles the first steel pipe (1), and tri linear encircles the first steel pipe (1) and tri linear encircles the second steel pipe (2) both sides of four the second steel pipe of Broken Line Archs (5) are located at, and four the second steel pipe of Broken Line Archs (5) and the 3rd steel pipe (6) of four Broken Line Archs are located at Tri linear encircles the both sides of the second steel pipe (2), and tri linear encircles the second steel pipe (2) and tri linear encircles the 3rd steel pipe (3) and is located at four broken lines Encircle the both sides of the 3rd steel pipe (6), the 3rd steel pipe (6) of four Broken Line Archs and the 4th steel pipe (7) of four Broken Line Archs are located at tri linear and encircle the 3rd Welding between (27) and the steel pipe of four Broken Line Archs (28) is encircleed in the both sides of steel pipe (3), the tri linear in five triangular structures There is truss-like auxiliary steel pipe (8), truss-like auxiliary steel pipe (8) forms N in vertical and oblique interlaced arrangement successively along longitudinal direction Shape truss structure.

4. laemodipodiform steel tubular type broken line arch bridge according to claim 3, it is characterised in that：Hawser suspension rod (9) It is arranged on truss-like auxiliary steel pipe (8) place of vertical arrangement.

5. laemodipodiform steel tubular type broken line arch bridge according to claim 1, it is characterised in that：Two main arch rib (29) Between be welded with several horizontally disposed steel pipe stull (17).

6. laemodipodiform steel tubular type broken line arch bridge according to claim 5, it is characterised in that：Steel pipe stull (17) position In tri linear arch (27) and the steel pipe infall of four Broken Line Archs (28).

7. laemodipodiform steel tubular type broken line arch bridge according to claim 1, it is characterised in that：Described beam structure (30) wrap Include steel case binder (10), gooseneck (18), steel longeron (19) and Orthotropic Steel Bridge Deck (20), steel case binder (10) edge Full-bridge both sides horizontally set, has been arranged laterally at a spacing several goosenecks (18) between two steel case binder (10), two Longitudinally spaced between steel case binder (10) it is disposed with several steel longerons (19), gooseneck (18) and steel longeron (19) Cross weld, steel case binder (10), gooseneck (18) and the alignment of steel longeron (19) upper limb, the Orthotropic Steel Bridge Deck (20) it is laid on steel case binder (10), gooseneck (18) and steel longeron (19), the outside of two steel case binder (10) is equal It is welded with steel construction and chooses arm (21).

8. laemodipodiform steel tubular type broken line arch bridge according to claim 1, it is characterised in that：Described substructure (31) wrap Include the pile foundation (15) of trapezoidal concrete saddle (13), the concrete bearing platform (14) of rectangle and insertion ground end, the tri linear arch (27) the two ends arch springing of and four Broken Line Archs (28) is fixed on concrete saddle (13), and the tri linear encircles (27) and four Broken Line Archs (28) mutually weld with the tapping of beam structure (30).

9. laemodipodiform steel tubular type broken line arch bridge according to claim 8, it is characterised in that：Concrete saddle (13) Both sides be provided with the end Transducers Embedded in Concrete skewback of concrete filled steel tube battered leg (11) and concrete filled steel tube battered leg (11) obliquely (13), in, concrete filled steel tube battered leg (11) are welded with beam structure (30), are vertically arranged on concrete saddle (13) Have in end Transducers Embedded in Concrete skewback (13) of two steel pipe posts being arranged side by side (12) and steel pipe post (12), the steel pipe Steel pipe post bearing (25) is provided between column (12) and beam structure (30), described positioned at the two of beam structure (30) both sides Horizontally disposed steel pipe stull (17) are welded between individual corresponding steel pipe post (12).

10. laemodipodiform steel tubular type broken line arch bridge according to claim 2, it is characterised in that：Main arch rib (29) At steel pipe cross weld and main arch rib (29) fastener for connection hawser suspension rod (9) position at be equipped with ring stiffener (22), described ring stiffener (22) in steel pipe.

11. laemodipodiform steel tubular type broken line arch bridges according to claim 1, it is characterised in that：The broken line arch bridge is adopted With being all equidistantly provided with ring mark on the outer wall of steel pipe.

The 12. laemodipodiform steel tubular type broken line arch bridges according to any claim in claim 1-11, it is characterised in that： The tri linear encircles the first steel pipe (1), tri linear and encircles the second steel pipe (2) and tri linear the 3rd steel pipe (3) length ratio relation of arch For 11:20:11, it is 134 ° that tri linear encircles the first steel pipe (1) with the angle of tri linear the second steel pipe of arch (2), tri linear arch second The angle that steel pipe (2) encircles the 3rd steel pipe (3) with tri linear is 134 °, four the first steel pipe of Broken Line Archs (4), four the second steel pipes of Broken Line Arch (5), the length ratio relation of the 3rd steel pipe (6) of four Broken Line Archs and the 4th steel pipe (7) of four Broken Line Archs is 5:17:17:5, four broken lines The angle for encircleing the first steel pipe (4) and four the second steel pipe of Broken Line Archs (5) is 132 °, the 3rd steel pipe (6) of four Broken Line Archs and four Broken Line Archs The angle of the 4th steel pipe (7) is 132 °, and the angle of four the second steel pipe of Broken Line Archs (5) and the 3rd steel pipe (6) of four Broken Line Archs is 141 °.