CN110857548A

CN110857548A - Long-span bridge

Info

Publication number: CN110857548A
Application number: CN201811016600.1A
Authority: CN
Inventors: 张发林
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-08-23
Filing date: 2018-08-23
Publication date: 2020-03-03

Abstract

A long-span bridge relates to a main tower, an oblique beam, a stay cable, a suspension cable, a sling and a bridge rib structure of the bridge. The bridge rib comprises a bridge rib of which the bridge body extends horizontally and an arch rib of an arch ring of an arch structure. The structure of the bridge is that an inclined beam (10) extends out of a bearing platform (2) at an included angle position between a main tower (3) and a bridge body bridge rib (4), an inclined beam connecting rod (13) is horizontally or crossly connected between opposite side inclined beams, one end of a stay cable (5) is anchored on the main tower (3), the other end of the stay cable is anchored on the upper portion of the inclined beam (10), one end of a sling (12) of the inclined beam is anchored on the lower portion of the inclined beam (10), the other end of the sling (7) is anchored on the bridge rib (4) which is close to and spans the bridge body, two ends of the suspension cable (7) are respectively anchored on the top end of the inclined beam (10), one end of a sling (8) led out from the middle portion of the suspension cable (7) is anchored on the suspension cable (7), and. The inclined beam extending out of the bearing platform is beneficial to increasing the stability and span of the bridge body or reducing the material cost and the like under the same conditions.

Description

Long-span bridge

Technical Field

The invention relates to a structure of a main tower, an oblique beam, a stay cable, a suspension cable, a sling and a bridge rib of a bridge.

Background

The bridge is the most critical link of land traffic, the rapid development of the land traffic is driven by the progress of the modern bridge construction technology, the span is one of the greatest difficulties in bridge construction, and the bridge becomes an insurmountable obstacle in certain difficult places. The existing bridge structure types comprise four types of arch bridges, stayed cables, suspension cables and composite bridges formed by combining the arch bridges and the stayed cables, wherein the maximum single span of the arch bridge is 497m, the maximum single span of the stayed cables is 1490 m, the span record of the suspension bridge is about 2000m, and at present, no bridge or technology exceeding the span limit exists.

Disclosure of Invention

In order to overcome the defects of the existing span or wind swing resistance and the like, the invention provides a large-span bridge, which utilizes the characteristics of stability and large span of sling and stay cable led out from an oblique beam or inner arched main towers at two sides and reasonably integrates the structures of the sling and the arch bridge on the basis.

The technical scheme adopted by the invention to solve the technical problem is as follows: a long-span bridge structurally comprises a main tower, an oblique beam, a connecting rod, a stay cable, a suspension cable, a sling, an arch ring, a bridge rib, an anchor span stay cable and other components. The structure of the bridge is that one end of a stay cable is anchored at anchor points of main towers at two sides, the other end of the stay cable is anchored at bridge ribs of a near-span bridge body and a mid-span bridge body, two ends of a suspension cable are respectively anchored at the main towers at two sides, one end of a sling led out from the middle part of the suspension cable is anchored at the suspension cable, the other end of the sling is vertically anchored at the bridge rib of the far-span bridge body (namely the middle part), one end of the anchor-span stay cable is anchored at the main tower, and the other end of the anchor-span. The inclined suspension of the stayed cable for the near span and the middle span of the bridge body is beneficial to fully utilizing the characteristics of good rigidity of the stayed cable, short path passing between stress points and larger included angle between the stayed cable and the bridge rib of the bridge body, and on the other hand, the middle position of the suspended cable suspension bridge body utilizes the characteristic that the suspended cable is suitable for remote suspension.

Preferably, the stay cable is anchored to the main towers at two sides through the oblique beams, and the structure of the bridge is that the oblique beams extend out of the bearing platform at the included angle between the main towers and the bridge body, one end of the stay cable is anchored to the main towers, the other end of the stay cable is anchored to the upper portion of the oblique beams, one ends of the sling cable of the oblique beams and the stay cable of the oblique beams are anchored to the lower portion of the oblique beams, the other ends of the stay cable are anchored to the bridge ribs of the near-span bridge body and the mid-span bridge body, two ends of the suspension cable are respectively anchored to the top end of the oblique beams, one end of the sling cable led out from the middle portion of the suspension cable is anchored to the suspension cable, the other end of the sling cable is vertically anchored to the bridge rib of the far-span bridge body (namely the middle portion), one end.

Furthermore, the inclined beam type bridge is provided with an inclined beam or two or more inclined beams extending from the bearing platform at the included angle between the main tower and the bridge body, and two ends of the suspension cable are respectively anchored at the top ends of the inclined beams. The two ends of the suspension cable are anchored at the top end of the oblique beam, so that the length of the suspension cable is shortened, and the wind swing resistance of the suspension cable is improved; under the same main tower height and span condition, the application of the oblique beam is favorable for increasing the included angle between the oblique beam sling and the oblique beam stay cable and the bridge body bridge rib, the included angle between the oblique beam sling and the bridge body bridge rib is a right angle, the increase of the included angle is favorable for increasing the component force of the oblique beam suspender and the oblique beam stay cable along the vertical direction, and the span of the bridge is increased under the same included angle condition, the height of the main tower is favorably reduced under the same span condition in the same way, the reduction of the height is favorable for saving materials and occupying high-altitude airspace, the introduction of the oblique beam is also favorable for shortening the distance between the stress points of the terminal, and the shortening of the distance is favorable for increasing the stationarity of the bridge body.

Preferably, the main tower of the large-span bridge is a two-side inner arched main tower, one end of an arm stay cable and one end of an arm sling of two side arms of the two-side inner arched main tower are anchored to the main tower, the other end of the arm stay cable is anchored to a bridge rib of a near-span bridge body and a mid-span bridge body, the arm sling and the bridge rib of the bridge body are vertically anchored, inner arm connecting rods are arranged at inner circle of arch rings of the two arms of the main tower to be vertically or crossly connected for reinforcement, the arm connecting rods are horizontally or crossly connected between the arms, two ends of the suspension cable are respectively anchored to the two-side inner arched main towers, one end of the sling led out from the middle of the suspension cable is anchored to the suspension cable, and the other end of the. When one end of the main tower is stressed, the arm inner connecting rod prevents the arm from deforming in a compression-resistant mode, the stress is transmitted to the opposite arm through the arm connecting rod, the arm inner connecting rod of the opposite arm shrinks from two ends to the middle in uniform internal stress, and the advantages of the arch structure of the arm and the uniform internal stress of the arm inner connecting rod are achieved. The advantages of the two-side inner arched main tower in the aspects of increasing the stability and span of the bridge body of the bridge, reducing the height of the main tower and saving materials are similar to those of the oblique beam type bridge.

The bridge rib of the long-span bridge comprises a bridge rib (main beam) of the bridge body which extends horizontally and an arch rib of an arch ring with an arch structure. When the bridge rib is the arch rib of the arch ring with the arch structure, namely the arch bridge, the stay cable (or the sling) and the suspension cable are a three-in-one or two-in-one bridge, one end of the stay cable (or the sling) is anchored on the main tower, the other end of the stay cable is anchored on the arch rib of the arch ring which is nearly spanned, the two ends of the suspension cable are respectively anchored on the main towers at the two sides, one end of the sling led out from the middle part of the suspension cable is anchored on the suspension cable, the other end of the sling is vertically anchored on the arch rib of the arch ring which is far spanned, one end of the sling of the arch ring is anchored on the arch rib. The force arms of the arch bridge are respectively reduced from the near span to the far span by the stay cables and the suspension cables, the reduction of the force arms is beneficial to reducing the sectional area of the arch ring, or the span of the arch bridge arch ring is increased under the condition of the same force arm and the sectional area of the arch ring.

The invention has the advantages that the oblique beam extending out of the bearing platform and the inner arched main towers at two sides are respectively provided with an extension from the shore end to the far span direction of the bridge body, and the extension can reduce the distance between terminal stress points, increase the stability and the span of the bridge body, and reduce the height of the main tower and the material cost of the arch ring of the arch bridge and the like under the condition of the same span. The invention relates to a combined application of an arch bridge, a stay cable and a suspension cable, which fully exerts the advantages that the suspension cable is suitable for long span, the stability of the arch bridge is good, and the rigidity of the stay cable is good, an oblique beam extending from a bearing platform and extending from the shore end of an inner arched main tower at two sides to the long span direction of a bridge body, and the stay cable and the suspension cable share the load-bearing force of the arch bridge from the short span and the long span, thereby reducing the moment arm of the arch bridge, and being beneficial to increasing the stability and the span of the bridge body or reducing the material cost and the like under the same condition.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of a large-span bridge 1 according to the present invention, in which a stay cable and a suspension cable are fused.

Fig. 2 is a schematic structural view of the fusion of the oblique beam type stay cable and the suspension cable of the 2 nd embodiment.

Fig. 3 is a schematic view of the structure of the oblique beam resisting the wind swing.

FIG. 4 is a schematic view of the top end structure of the inclined beam with the ends of the sling and the suspension cable anchored to the inclined beam.

Fig. 5 is a schematic structural view of the top end of the oblique beam, wherein two ends of the oblique beam oblique stay cable and the suspension cable are respectively anchored on the oblique beam.

FIG. 6 is a schematic view of the top structure of the combination of the inclined beam sling and the inclined beam stay cable and the suspension cable with two ends anchored to the inclined beam.

Fig. 7 is a structural schematic diagram of the fusion of the stay cables and the suspension cables of the main tower arms with the inner arches at two sides.

FIG. 8 is a schematic diagram of a two-sided inner arched main tower arm sling and sling fusion configuration.

Fig. 9 is a structural schematic diagram of the fusion of the two-side inner arched main tower arm sling, the arm stay cable and the suspension cable.

Fig. 10 is a schematic structural view of a bridge with arch bridges, suspension cables and stay cables fused.

Fig. 11 is a schematic structural diagram of a bridge with an arch bridge, a suspension cable and a sloping beam sling fused together.

Fig. 12 is a schematic structural diagram of a bridge with a combination of arch bridges, suspension cables, inclined beam suspension cables and inclined beam stay cables.

Fig. 13 is a schematic structural diagram of a bridge with an arch bridge, suspension ropes and suspension ropes of main tower arms with two inner arches at two sides fused.

Fig. 14 is a schematic structural diagram of a bridge with an arch bridge, suspension cables, main tower-arm suspension cables with two inner arched sides and arm stay cables fused together.

In the figure, 1, a foundation, 2, a cushion cap, 3, a main tower, 4, a bridge rib, 5, a stay cable, 6, an anchor span stay cable, 7, a suspension cable, 8, a sling, 9, a ground anchor, 10, a sloping beam, 11, a sloping beam stay cable, 12, a sloping beam sling, 13, a sloping beam connecting rod, 14, a sloping beam connecting rod, 15, a two-side inner arched main tower, 16, an arm inner connecting rod, 17, an arm connecting rod, 18, an arm stay cable, 19, an arm sling, 20, an arch rib, 21, an arch ring connecting rod and 22, an arch ring sling.

Detailed Description

The embodiment shown in figure 1 is a structural schematic diagram of fusion of a stay cable and a suspension cable, wherein one end of a stay cable (5) is anchored to main towers (3) at two sides, the other end of the stay cable is anchored to a bridge rib (4) of a near-span bridge body and a mid-span bridge body, two ends of the suspension cable (7) are respectively anchored to the main towers (3) at two sides, one end of a sling (8) led out from the middle part of the suspension cable (7) is anchored to the suspension cable, the other end of the sling is vertically anchored to a bridge rib (4) of a far-span bridge body (namely the middle part), one end of an anchor span stay cable (6) is anchored to the main tower (3), and the other end of the anchor span stay cable is.

In the embodiment shown in figure 2, the stay cable (5) is anchored on the main tower (3) at two sides through an oblique beam (10), the structure is that the oblique beam (10) extends out from a bearing platform (2) at the included angle position between the main tower (3) and a bridge rib (4) of a bridge body, an oblique beam connecting rod (13) is horizontally or crossly connected between the opposite oblique beams, one end of the stay cable (5) is anchored on the main tower (3), the other end is anchored on the upper part of the oblique beam (10), one end of a sling (12) of the oblique beam and one end of a stay cable (11) of the oblique beam are anchored on the lower part of the oblique beam (10), the other end are anchored on the bridge rib (4) of a near span bridge body and a bridge body, two ends of a suspension cable (7) are respectively anchored on the top end of the oblique beam (10), one end of a sling (8) led out from the middle part of the suspension cable (7) is anchored on the suspension cable (7), the other end is vertically anchored on the bridge rib (4) of, the other end is anchored on a bridge rib (4) and a ground anchor (9) of the shore end bridge body.

The other embodiment of the oblique beam type bridge is that the inclined cable (5) is anchored on the main tower (3) at two sides through the inclined beam (10), the inclined beam (10) extends out from the bearing platform (2) at the included angle position between the main tower (3) and the bridge body and bridge ribs (4), the inclined beam connecting rods (13) are horizontally or crossly connected between the opposite inclined beams, one end of the inclined cable (5) is anchored on the main tower (3), the other end is anchored on the upper part of the inclined beam (10), one end of the inclined beam sling (12) is anchored on the lower part of the inclined beam (10), the other end is anchored on the bridge ribs (4) of the nearly-spanned bridge body, two ends of the suspension cable (7) are respectively anchored on the top end of the inclined beam (10), one end of the sling (8) led out from the middle part of the suspension cable (7) is anchored on the suspension cable (7), the other end is vertically anchored on the bridge ribs (4) of the mid-span and far-spanned bridge body, the other end is anchored on a bridge rib (4) and a ground anchor (9) of the shore end bridge body.

The 3 rd embodiment of the oblique beam type bridge is that the inclined cables (5) are anchored on the main towers (3) at two sides through the inclined beams (10), the inclined beams (10) extend out from the bearing platform (2) at the included angle position between the main towers (3) and the bridge ribs (4) of the bridge body, the inclined beam connecting rods (13) are horizontally or crossly connected between the opposite side inclined beams, one end of each inclined cable (5) is anchored on the main tower (3), the other end of each inclined beam is anchored on the upper part of the inclined beam (10), one end of each inclined beam inclined cable (11) is anchored on the lower part of the inclined beam (10), the other end of each inclined beam inclined cable is anchored on the bridge ribs (4) of the near-span bridge body and the mid-span bridge body, two ends of each suspension cable (7) are respectively anchored on the top ends of the inclined beams (10), one end of each suspension cable (8) led out from the middle part of each suspension cable (7) is anchored on each suspension cable (7), the other end of each inclined cable, the other end is anchored on a bridge rib (4) and a ground anchor (9) of the shore end bridge body.

In the 4 th embodiment of the oblique beam type bridge, the oblique beam sling (12) and the oblique beam stayed cable (11) are respectively anchored at the near span, the middle span and the far span anchor points of the bridge body bridge rib (4) or the arch ring arch rib (20) without introducing suspension cables. Specifically, an oblique beam (10) extends out of a bearing platform (2) at an included angle position between a main tower (3) and a bridge body bridge rib (4), an oblique beam connecting rod (13) is horizontally or in cross connection between opposite oblique beams, one end of a stay cable (5) is anchored to the main tower (3), the other end of the stay cable is anchored to the upper portion of the oblique beam (10), one ends of an oblique beam sling (12) and an oblique beam stay cable (11) are anchored to the lower portion of the oblique beam (10), and the other ends of the stay cable and the oblique beam stay cable are anchored to anchor points of a near span, a mid span and a far span of the bridge body bridge rib (4) or an arch ring arch rib (20).

Fig. 3 is a schematic diagram of the structure of the oblique beam resisting the wind swing, and in the diagram, an oblique beam connecting rod (13) is horizontally or crossly connected between the opposite oblique beams, and the horizontal or crossly connected oblique beam connecting rods (13) are beneficial to enhancing the transverse force resisting capability, namely the wind swing resisting capability of the oblique beams.

In the embodiment shown in fig. 4, the structure is that two or more oblique beams (10) extend out from the bearing platform (2) at the included angle position between the main tower (3) and the bridge rib (4) of the bridge body, the inclined beams are horizontally or crossly connected by inclined beam connecting rods (13), the upper inclined beam and the lower inclined beam are connected and reinforced by inclined beam connecting rods (14), one end of a stay cable (5) is anchored on a main tower (3), the other end of the stay cable is anchored on an upper inclined beam (10), one end of an inclined beam sling (12) is anchored on a lower inclined beam, the other end of the stay cable sling is anchored on a bridge rib (4) of a bridge body which is nearly spanned, the two ends of a suspension cable (7) are respectively anchored on the top end of the inclined beam (10), one end of a sling (8) led out from the middle part of the suspension cable (7) is anchored on the suspension cable (7), the other end of the stay cable (6) is vertically anchored on a bridge rib (4) of a midspan bridge body and a bridge body which is far spanned, one end of an anchor stay cable (6) is.

The embodiment shown in fig. 5 is the same as the embodiment shown in fig. 4, except that the diagonal member suspension cables (12) of the diagonal member (10) are diagonal member stay cables (11). One end of an oblique beam stay cable (11) is anchored at a lower layer of oblique beam, the other end is anchored at a bridge rib (4) of a near-span bridge body and a mid-span bridge body, two ends of a suspension cable (7) are respectively anchored at the top end of the oblique beam (10), one end of a sling (8) led out from the middle part of the suspension cable (7) is anchored at the suspension cable (7), and the other end is vertically anchored at the bridge rib (4) of the far-span bridge body.

The embodiment shown in fig. 6 is a fusion of the embodiment shown in fig. 4 and the embodiment shown in fig. 5, one end of a stay cable (5) is anchored to a main tower (3), the other end is anchored to an upper-layer oblique beam (10), one end of an oblique beam sling (12) is anchored to a lower-layer oblique beam, the other end is anchored to a bridge rib (4) of a bridge body which is close to a span, one end of an oblique beam stay cable (11) is anchored to the top end of the lower-layer oblique beam, the other end is anchored to a bridge rib (4) of the bridge body which is in the span, two ends of a suspension cable (7) are respectively anchored to the top ends of the oblique beams (10), one end of a sling (8) led out from the middle of the suspension cable (7) is anchored to the suspension cable (7), and.

The other embodiment of the oblique beam type bridge is that two or more oblique beams (10) extend out of a bearing platform (2) at the included angle position between a main tower (3) and a bridge body bridge rib (4), oblique beam connecting rods (13) are horizontally or crossly connected between opposite oblique beams, the upper oblique beam and the lower oblique beam are connected and reinforced by the oblique beam connecting rods (14), and oblique beam suspension ropes (12) and oblique beam stay ropes (11) are respectively anchored at a near span, a mid span and a far span anchor point of the bridge body bridge rib (4) or an arch ring arch rib (20) without introducing suspension ropes. Specifically, one end of a stay cable (5) is anchored to a main tower (3), the other end of the stay cable is anchored to an upper-layer oblique beam (10), one ends of an oblique-beam sling (12) and an oblique-beam stay cable (11) are anchored to a lower-layer oblique beam (10), and the other ends of the stay cable and the oblique-beam stay cable are anchored to anchoring points of a bridge rib (4) or an arch ring arch rib (20) which are near to, mid-span and far-span.

The main tower of the long-span bridge comprises a main tower (3) and two side inner arched main towers (15), in the embodiment shown in fig. 7, the main tower is a two-side inner arched main tower, one end of an arm stay cable (18) of two side arms of the two-side inner arched main tower (15) is anchored to the two-side inner arched main tower (15), the other end of the arm stay cable is anchored to a bridge rib (4) of a near-span bridge body and a mid-span bridge body, an arm inner connecting rod (16) is arranged in an inner ring of an arch ring of the two arms of the main tower to be vertically or crossly connected for reinforcement, an arm connecting rod (17) is horizontally or crossly connected between the arms, two ends of the suspension cable (7) are respectively anchored to the two-side inner arched main towers (15), one end of a sling (8) led out from the middle part of the suspension cable (7) is anchored to the suspension cable (7), the other end of the suspension cable is vertically anchored to the bridge rib (4) of the far-span bridge body, one end of the anchor stay cable (6) is anchored to the.

The embodiment shown in fig. 8 is the same as the embodiment shown in fig. 7, except that the arm stay cables (18) of the two side arms of the two side inner arched main towers (15) are arm suspension cables (19), one end of each arm suspension cable (19) is anchored to the two side inner arched main towers (15), and the other end is vertically anchored to the bridge rib (4) of the nearly-striding bridge body. One end of a sling (8) led out from the middle part of the suspension cable (7) is anchored on the suspension cable (7), the other end is vertically anchored on the bridge ribs (4) of the midspan bridge body and the remote bridge body,

the embodiment shown in fig. 9 is a fusion of the arm stay cable (18) of the embodiment shown in fig. 7 and the arm sling (19) of the embodiment shown in fig. 8. One end of an arm sling (19) of each side arm is anchored to the inner arched main towers (15) on two sides, the other end of the arm sling is vertically anchored to a bridge rib (4) of a nearly-striding bridge body, one end of an arm stay cable (18) is anchored to the inner arched main towers (15) on two sides, the other end of the arm stay cable is anchored to the bridge rib (4) of a mid-striding bridge body, two ends of a suspension cable (7) are respectively anchored to the inner arched main towers (15) on two sides, one end of a sling (8) led out from the middle part of the suspension cable (7) is anchored to the suspension cable (7), and the other end of the sling is vertically.

When the bridge rib of the large-span bridge is the arch rib (20) of the arch ring with the arch structure, the bridge is a fusion bridge of an arch bridge, a stay cable and a suspension cable.

The embodiment shown in fig. 10 is an arch bridge, a stayed cable and a suspension cable fused bridge, wherein one end of a stayed cable (5) is anchored to a main tower (3), the other end of the stayed cable is anchored to an arch rib (20) of an arch structure near a span arch ring, two ends of the suspension cable (7) are respectively anchored to the main towers (3) at two sides, one end of a sling (8) led out from the middle of the suspension cable (7) is anchored to the suspension cable (7), the other end of the sling is vertically anchored to the arch rib (20) of the arch structure far the span arch ring, one end of an arch ring sling (22) is anchored to the arch rib (20) of the far span arch ring, the other end of the sling is anchored to an anchor point corresponding to a bridge body rib (4), the arch structure arch ring rib (20) is connected by an arch ring connecting rod (21), one end of an anchor span stayed cable (6) is anchored to the main tower (3), and the other end of the.

In another structure of an arch bridge, a stay cable and a suspension cable fusion shown in fig. 11, the structure is that two or more than two oblique beams (10) extend out from a bearing platform (2) at an included angle position between a main tower (3) and an arch ring arch rib (20), oblique beam connecting rods (13) are horizontally or crossly connected between opposite oblique beams, the upper oblique beam and the lower oblique beam are connected and reinforced by oblique beam connecting rods (14), two ends of the suspension cable (7) are respectively anchored at the top ends of the oblique beams (10), one end of a stay cable (5) is anchored at the main tower (3), the other end is anchored at an upper oblique beam (10), one end of a sling (12) of the oblique beam is anchored at the lower oblique beam (10), the other end is anchored at an arch rib (20) of a near-span arch ring, one end of a sling (8) led out from the middle part of the suspension cable (7) is anchored at the suspension cable (7), the other end is vertically anchored at the arch rib (20) of the far-span arch ring, one end of the sling (22) is anchored at the, the other end is anchored at the corresponding anchor point of the bridge rib (4) of the bridge body, the arch ring arch rib (20) of the arch structure is connected by an arch ring connecting rod (21), one end of an anchor span stay cable (6) is anchored at the main tower (3), and the other end is anchored at the bridge rib (4) and the ground anchor (9) of the bridge body at the shore end.

The other embodiment of the oblique beam type bridge is the same as the embodiment shown in fig. 11, except that the oblique beam sling (12) of the oblique beam is an oblique beam inclined cable (11), one end of the oblique beam inclined cable (11) is anchored on the lower oblique beam (10), and the other end is anchored on the arch rib (19) of the near span and middle span arch rings.

The embodiment shown in fig. 12 is the same as the embodiment shown in fig. 11, except that the oblique-beam stay cables (11) are introduced in addition to the oblique-beam suspension cables (12), one end of each oblique-beam stay cable (11) is anchored to the top end of the lower oblique beam (10), and the other end is anchored to the arch rib (19) of the mid-span arch ring.

The embodiment shown in fig. 13 is another bridge with an arch bridge, a stay cable and a suspension cable fused, wherein the main tower is a two-side inner arch main tower (15), one end of an arm sling (19) of two side arms of the two-side inner arch main tower (15) is anchored to the two-side inner arch main tower (15), the other end is vertically anchored to an arch rib (20) of a nearly-spanned arch ring, and the inner rings of the arch rings of the two arms of the main tower are vertically or crossly connected and reinforced by arm inner connecting rods (16); there are arm connecting rod (17) level or cross connection between arm and the arm, the both ends of span cable (7) are anchored respectively in arch shape main tower (15) in both sides, hoist cable (8) one end anchor in span cable (7) that draw from span cable (7) middle part, the other end is perpendicular to the arch rib (20) of striding the arch ring far away, arch ring hoist cable (22) one end anchor in the arch rib (20) of striding the arch ring far away, the other end anchor in the corresponding anchor point of bridge body bridge rib (4), anchor span cable (6) one end anchor in arch main tower (15) in both sides, the other end anchor in bridge rib (4) and ground anchor (9) of bank end bridge body.

In the embodiment shown in fig. 14, the difference from the embodiment shown in fig. 13 is that arm stay cables 18 are introduced in addition to the main tower arm slings 19, and one end of each arm stay cable 18 is anchored to the inner arched main towers 15 on both sides, and the other end is anchored to the arch rib 20 of the mid-span arch ring.

The bridge deck of the bridge body, namely the bridge rib (4) in the figures 10-14, can be removed from the embodiment shown in figures 10-14, and the bridge deck is replaced by an arch ring to obtain another embodiment.

The other embodiment of the bridge with the long span is an arch bridge and a suspension cable integrated bridge, two ends of a suspension cable (7) are respectively anchored on a main tower (3) at two sides or an inner arched main tower (15) at two sides, one end of a sling (8) led out from the middle of the suspension cable (7) is anchored on the suspension cable (7), the other end of the sling is vertically anchored on an arch rib (20) of an arch structure far-spanning arch ring, one end of an arch ring sling (22) is anchored on the arch rib (20) of the far-spanning arch ring, and the other end of the sling is anchored on a corresponding anchor point of a bridge body and bridge rib (4).

Another embodiment of the two-side inner arched king-tower bridge is that the arm sling (19) and the arm stay cable (18) are respectively anchored on the near span, the middle span and the far span anchor points of the bridge body bridge rib (4) or the arch ring arch rib (20) without leading in suspension cables. Specifically, one end of an arm sling (19) and one end of an arm stay cable (18) are anchored on the inner arched main towers on two sides, and the other end of the arm sling and the arm stay cable are anchored on the anchor points of the near span, the middle span and the far span of the bridge body and bridge rib (4) or the arch ring and arch rib (20).

In case of conflict, the embodiments and features of the embodiments of the present application may be combined with each other at will to give further embodiments.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art based on the basic concept of the present technology or within the scope of the appended claims without affecting the spirit of the present invention and the scope of the appended claims.

Claims

1. A large span bridge is characterized in that the structure of the bridge comprises a main tower, an oblique beam, a connecting rod, a stay cable, a suspension cable, a sling, an arch ring, a bridge rib, an anchored span stay cable and other components, wherein the stay cable (5) is anchored on the main tower (3) at two sides through the oblique beam (10), the oblique beam (10) extends out from a bearing platform (2) at the included angle position between the main tower (3) and the bridge rib of a bridge body, the oblique beam connecting rod (13) is horizontally or crossly connected between the oblique beams at the opposite sides, one end of the stay cable (5) is anchored on the main tower (3), the other end is anchored on the upper part (10) of the oblique beam, one end of the oblique beam sling (12) and one end of the oblique beam stay cable (11) are anchored on the lower part of the oblique beam, the other end of the oblique beam sling (12) and the bridge rib of the bridge body of a near span bridge and a mid-span bridge body, two ends of the suspension cable (7) are respectively anchored on the top end, the other end is vertically anchored to the bridge rib of the far-span bridge body, one end of an anchor span stay cable (6) is anchored to the main tower (3), and the other end is anchored to the bridge rib and the ground anchor (9) of the shore-end bridge body.

2. The large-span bridge according to claim 1, wherein the stay cable (5) is anchored to the main tower (3) at both sides through an oblique beam (10), the oblique beam (10) extends from the bearing platform (2) at an included angle between the main tower (3) and a bridge rib of a bridge body, an oblique beam connecting rod (13) is horizontally or crossly connected between the opposite oblique beams, one end of the stay cable (5) is anchored to the main tower (3), the other end of the stay cable is anchored to the upper part of the oblique beam (10), one end of an oblique beam sling (12) is anchored to the lower part of the oblique beam (10), the other end of the stay cable (12) is anchored to the bridge rib of a bridge body near the span, both ends of the suspension cable (7) are respectively anchored to the top end of the oblique beam (10), one end of a sling (8) led out from the middle part of the suspension cable (7) is anchored to the suspension cable (7), and the other end of the.

3. The large-span bridge according to claim 1, wherein the stay cables (5) are anchored to the main towers (3) at both sides through the oblique beams (10), the oblique beams (10) extend from the bearing platform (2) at the included angle between the main towers (3) and the bridge ribs of the bridge body, the oblique beam connecting rods (13) are horizontally or crossly connected between the opposite oblique beams, one ends of the stay cables (5) are anchored to the main towers (3), the other ends of the stay cables are anchored to the upper parts of the oblique beams (10), one ends of the stay cables (11) of the oblique beams are anchored to the lower parts of the oblique beams (10), the other ends of the stay cables are anchored to the bridge ribs of the near-span bridge body and the mid-span bridge body, both ends of the suspension cables (7) are respectively anchored to the top ends of the oblique beams (10), one ends of the suspension cables (8) led out from the middle parts of the suspension cables (7) are anchored to the suspension cables (7.

4. The large-span bridge according to claim 1, wherein an oblique beam (10) extends from the bearing platform (2) at an included angle position between the main tower (3) and the bridge body rib, an oblique beam connecting rod (13) is horizontally or crossly connected between the opposite oblique beams, one end of the oblique stay cable (5) is anchored to the main tower (3), the other end of the oblique stay cable is anchored to the upper part of the oblique beam (10), one end of the oblique beam sling (12) and the oblique beam oblique stay cable (11) is anchored to the lower part of the oblique beam (10), and the other end of the oblique stay cable is anchored to the anchor points of the near span, the middle span and the far span of the bridge body rib.

5. The bridge of claim 1, wherein two or more oblique beams (10) extend from the bearing platform (2) at the included angle between the main tower (3) and the bridge rib of the bridge body, oblique beam connecting rods (13) are horizontally or crossly connected between the opposite oblique beams, and the upper oblique beam and the lower oblique beam are connected and reinforced by the oblique beam connecting rods (14).

6. The long-span bridge according to claim 1, wherein one end of the stay cable (5) is anchored to the main towers (3) at both sides, and the other end is anchored to the bridge rib of the short-span and the mid-span bridge body, both ends of the suspension cable (7) are anchored to the main towers (3) at both sides, respectively, one end of the sling (8) led out from the middle part of the suspension cable (7) is anchored to the suspension cable, and the other end is anchored to the bridge rib of the long-span bridge body vertically.

7. The large-span bridge according to claim 1, wherein the main towers are two-side inner arched main towers, one end of an arm stay cable (18) of two side arms of the two-side inner arched main towers (15) is anchored to the two-side inner arched main towers (15), the other end of the arm stay cable is anchored to a bridge rib of a near-span bridge body and a mid-span bridge body, an arm inner connecting rod (16) is arranged in an inner ring of an arch ring of the two arms of the main towers to be vertically or crossly connected and reinforced, an arm connecting rod (17) is arranged between the arms to be horizontally or crossly connected, two ends of the suspension cable (7) are respectively anchored to the two-side inner arched main towers (15), one end of a sling (8) led out from the middle part of the suspension cable (7) is anchored to the suspension cable (7), and the other end of.

8. The large-span bridge according to claim 1, wherein the main tower is a two-side inner arched main tower, one end of an arm sling (19) of two side arms of the two-side inner arched main tower (15) is anchored to the two-side inner arched main tower (15), the other end of the arm sling is anchored to a bridge rib of a bridge body which is close to the span bridge, inner arm connecting rods (16) are arranged in the inner rings of the two arms of the main tower to be vertically or crossly connected for reinforcement, arm connecting rods (17) are arranged between the arms to be horizontally or crossly connected, two ends of the suspension cable (7) are respectively anchored to the two-side inner arched main tower (15), one end of a sling (8) led out from the middle part of the suspension cable (7) is anchored to the suspension cable (7), and the other end of the sling is vertically anchored to the bridge rib.

9. The large-span bridge according to claim 1, wherein the main tower is a two-side inner arched main tower, one end of an arm sling (19) of each side arm is anchored to the two-side inner arched main tower (15), the other end of the arm sling is vertically anchored to a bridge rib of a bridge body which is close to the bridge body, one end of an arm stay cable (18) is anchored to the two-side inner arched main tower (15), the other end of the arm stay cable is anchored to a bridge rib of a bridge body which is mid-span, two ends of the suspension cable (7) are respectively anchored to the two-side inner arched main towers (15), one end of a sling (8) led out from the middle part of the suspension cable (7) is anchored to the suspension cable (7), and the other end of the sling is vertically.

10. A long span bridge according to claim 1, wherein the bridge ribs of a long span bridge comprise the bridge ribs (4) of the bridge body extending horizontally and the arch ribs (15) of the arch structure arch ring.