阅读说明：本技术 一种悬挂式单轨的连续刚构拱桥 (Suspension type monorail continuous rigid frame arch bridge ) 是由 曾敏 崔旸 严爱国 文望青 刘阳明 饶少臣 刘诗文 陈丽莎 马明 李元俊 于 2021-07-05 设计创作，主要内容包括：本申请实施例提供了一种悬挂式单轨的连续刚构拱桥,其中轨道组件包括第一横梁、第二横梁及两个轨道梁,各轨道梁沿横桥向间隔设置并沿纵桥向延伸,第一横梁和第二横梁设置在各轨道梁间且沿纵桥向间隔设置；下部结构中的第一子结构支撑第一横梁,第二子结构设置在第一横梁与第二横梁之间的间隔处的下侧；设置在各轨道梁间的第一拱肋结构的第一拱脚与第一横梁连接,第二拱脚从各轨道梁间伸至轨道组件的下方且与第二子结构连接；第一拱肋结构位于轨道组件上侧的区域与各轨道梁间通过第一连接件连接；设置在各轨道梁间的支撑组件的一端与第二子结构连接,支撑组件的另一端与第二横梁连接。本申请实施例的悬挂式单轨的连续刚构拱桥跨越能力较高。(The embodiment of the application provides a continuous rigid frame arch bridge of a suspended monorail, wherein a track assembly comprises a first cross beam, a second cross beam and two track beams, the track beams are arranged at intervals along the transverse bridge direction and extend along the longitudinal bridge direction, and the first cross beam and the second cross beam are arranged between the track beams and are arranged at intervals along the longitudinal bridge direction; a first substructure in the substructure supports the first beam, and a second substructure is disposed on an underside of a space between the first beam and the second beam; the first arch springing of the first arch rib structure arranged between the track beams is connected with the first beam, and the second springing extends to the lower part of the track assembly from between the track beams and is connected with the second substructure; the area of the first arch rib structure, which is positioned at the upper side of the track assembly, is connected with each track beam through a first connecting piece; one end of the supporting component arranged between the track beams is connected with the second substructure, and the other end of the supporting component is connected with the second cross beam. The continuous rigid frame arch bridge of the suspension type monorail provided by the embodiment of the application has high spanning capacity.)

1. A continuous rigid frame arch bridge of a suspended monorail, comprising:

the track assembly comprises a first cross beam, a second cross beam and two track beams, the two track beams are arranged at intervals along the transverse bridge direction and extend along the longitudinal bridge direction, and the first cross beam and the second cross beam are arranged between the two track beams and are arranged at intervals along the longitudinal bridge direction;

a substructure including a first substructure supporting the first beam and a second substructure disposed on an underside of a space between the first beam and the second beam;

a first rib structure disposed between the two track beams, the first rib structure having a first rib foot and a second rib foot, the first rib foot being connected to the first beam, the second rib foot extending from between the two track beams to below the track assembly and being connected to the second substructure;

the first arch rib structures are positioned in the area on the upper side of the track assembly and connected with the track beams through the first connecting pieces;

and the supporting component is arranged between the two track beams, one end of the supporting component is connected with the second substructure, and the other end of the supporting component is connected with the second cross beam.

2. The continuous rigid frame arch bridge of claim 1, wherein the support assemblies are skew legs.

3. The continuous rigid frame arch bridge of claim 2, further comprising a first cradle disposed on top of the first substructure, the first beam being connected to the first cradle.

4. A continuous rigid frame arch bridge according to claim 1, wherein the support assembly comprises a second rib structure having a third rib foot and a fourth rib foot, and a plurality of second connectors, the substructure further comprising a third substructure;

the third substructure supports the second beam, the third rib structure has the third rib leg connected to the second beam, and the fourth rib leg extends between the two track beams to below the track assembly and is connected to the second substructure;

the second arch rib structure is connected between the area of the upper side of the track assembly and each track beam through the second connecting piece.

5. A continuous rigid frame arch bridge according to claim 4, wherein the area of the first arch rib structure on the upper side of the track assembly is asymmetric arch axis with the area of the second arch rib structure on the upper side of the track assembly.

6. The continuous rigid frame arch bridge of claim 4, further comprising a first cradle and a second cradle, the first cradle being disposed on top of the first substructure, the first beam being connected to the first cradle, the second cradle being disposed on top of the third substructure, the second beam being connected to the second cradle.

7. A continuous rigid frame arch bridge according to claim 4, wherein the first and second arch rib structures are each steel box structures.

8. The continuous rigid frame arch bridge of claim 1, wherein the second substructure includes a first platform, the second arch foot and the support assembly each being connected to the first platform.

9. The continuous rigid frame arch bridge of claim 1, wherein the second substructure includes an abutment and a second cap, the abutment being connected to the second cap, the second arch shoe and the support assembly both being connected to the abutment.

10. A continuous rigid frame arch bridge according to claim 1, wherein the region of the first arch rib structure on the underside of the track assembly is symmetrically disposed with respect to the region of the support assembly on the underside of the track assembly.

Technical Field

The invention relates to the field of urban novel rail transit, in particular to a continuous rigid frame arch bridge with a suspended monorail.

Background

Suspension type monorail transit belongs to track traffic's novel technique, is used for scenic spot and city more, and its bridge structures structure is succinct, the vision is penetrating, has avoided appearing more complicated component and has sheltered from the sight. At present, the research and construction of the rail beam at home and abroad are concentrated in the conventional span (the span is less than or equal to 30m), but the large-span suspension type monorail bridge is indispensable due to the diversity of the required spanning barriers, and sometimes even becomes a key node for implementing the suspension type monorail.

Compared with other long-span bridge girders, the track girder of the suspended monorail is a load-bearing structure and also serves as a running and guiding track of a vehicle, and has strict requirements on deformation of the track girder under the action of vehicle load in order to ensure the safety and comfort of train operation, so that the bridge girder structure has enough vertical and transverse rigidity. After the span of the conventional suspended monorail beam exceeds 30m, the vertical deflection and the transverse deflection of the rail beam are too large, and the requirements on rigidity and comfort are difficult to meet.

Disclosure of Invention

In view of the above, the main object of the embodiments of the present application is to provide a continuous rigid frame arch bridge with a suspended monorail having high spanning capability.

In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

the embodiment of the application provides a continuous rigid frame arch bridge of suspension type monorail, includes:

the track assembly comprises a first cross beam, a second cross beam and two track beams, the two track beams are arranged at intervals along the transverse bridge direction and extend along the longitudinal bridge direction, and the first cross beam and the second cross beam are arranged between the two track beams and are arranged at intervals along the longitudinal bridge direction;

a substructure including a first substructure supporting the first beam and a second substructure disposed on an underside of a space between the first beam and the second beam;

a first rib structure disposed between the two track beams, the first rib structure having a first rib foot and a second rib foot, the first rib foot being connected to the first beam, the second rib foot extending from between the two track beams to below the track assembly and being connected to the second substructure;

the first arch rib structures are positioned in the area on the upper side of the track assembly and connected with the track beams through the first connecting pieces;

and the supporting component is arranged between the two track beams, one end of the supporting component is connected with the second substructure, and the other end of the supporting component is connected with the second cross beam.

In one embodiment, the support assembly is a diagonal leg.

In one embodiment, the continuous rigid frame arch bridge further includes a first movable support disposed at the top of the first substructure, and the first beam is connected to the first movable support.

In one embodiment, the support assembly comprises a second rib structure having a third rib foot and a fourth rib foot, and a plurality of second connectors, the substructure further comprising a third substructure;

the third substructure supports the second beam, the third rib structure has the third rib leg connected to the second beam, and the fourth rib leg extends between the two track beams to below the track assembly and is connected to the second substructure;

the second arch rib structure is connected between the area of the upper side of the track assembly and each track beam through the second connecting piece.

In one embodiment, the area of the first rib structure on the upper side of the track assembly is asymmetric with the area of the second rib structure on the upper side of the track assembly.

In one embodiment, the continuous rigid frame arch bridge further includes a first movable support and a second movable support, the first movable support is disposed at the top of the first substructure, the first beam is connected to the first movable support, the second movable support is disposed at the top of the third substructure, and the second beam is connected to the second movable support.

In one embodiment, the first and second rib structures are both steel box structures.

In one embodiment, the second substructure includes a first platform, and the second arch foot and the support assembly are both connected to the first platform.

In one embodiment, the second substructure includes a bridge pier and a second bearing platform, the bridge pier is connected with the second bearing platform, and the second arch springing and the support component are both connected with the bridge pier.

In one embodiment, the region of the first rib structure on the underside of the track assembly is symmetrically disposed with respect to the region of the support assembly on the underside of the track assembly.

The embodiment of the application provides a single-rail continuous rigid frame arched bridge of suspension type, this continuous rigid frame arched bridge is through setting up first arch rib structure between two track roof beams, combine together arched bridge and suspension type single track, the demand of suspension type vehicle to the operating space has been satisfied, first arch rib structure is located and is connected through first connecting piece between the region of track subassembly upside and each track roof beam, therefore, the gravity of two track roof beam bodies and the load effort of vehicle on the roof beam can transmit first arch rib structure through first connecting piece on. In addition, the first arch springing of the first arch rib structure is connected with the first beam, the first beam is supported by the first substructure, and the second arch springing extends to the lower part of the track assembly from between the two track beams and is connected with the second substructure, so that the force on the first arch rib structure can be transmitted to the first substructure and the second substructure, and the stress of the continuous rigid frame arch bridge is more uniform. One end of the supporting component is connected with the second substructure, and the other end of the supporting component is connected with the second cross beam, so that the horizontal thrust generated by the continuous rigid frame arch bridge at the second arch springing is balanced, the structure has larger vertical, transverse and torsional rigidity, and the spanning capability of the continuous rigid frame arch bridge is greatly improved.

Drawings

FIG. 1 is a block diagram of a continuous rigid frame arch bridge with a suspended monorail constructed in accordance with a first embodiment of the present application;

FIG. 2 is a view a-a of FIG. 1;

FIG. 3 is a structural view of a continuous rigid frame arch bridge of a suspended monorail of a second embodiment of the present application;

fig. 4 is a structural view of a continuous rigid frame arch bridge of a suspended monorail of the third embodiment of the present application.

Description of the reference numerals

A track assembly 10; a first cross member 11; a track beam 12; a lower structure 20; a first substructure 21; a second substructure 22; a first stage 221; a second platform 222; bridge piers 223; a third substructure 23; a first rib structure 30; a first connecting member 40; a support assembly 50; a second connecting member 51; a second rib structure 52.

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the present application, the "longitudinal direction", "vertical direction", "upper" and "lower" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 1, and the "transverse direction" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 2. It is to be understood that such directional terms are merely for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application.

Referring to fig. 1 and 2, the continuous rigid frame arch bridge of the suspended monorail includes a rail assembly 10, a substructure 20, a first arch rib structure 30 disposed between two rail beams 12, a plurality of first connecting members 40, and a support assembly 50 disposed between two rail beams 12. The track assembly 10 includes a first beam 11, a second beam, and two track beams 12, that is, the continuous rigid frame arch bridge of the present application has two tracks, which may be two same-direction tracks or two opposite-direction tracks, and the two tracks are symmetrically disposed about the first arch rib structure 30. Two track roof beams 12 set up and extend to the interval along indulging the bridge along horizontal bridge, and first crossbeam 11 and second crossbeam setting just set up to the interval along indulging the bridge between two track roof beams 12, can improve the stability of two track roof beams 12 to the load on two track roof beams 12 of transmission makes the roof beam body atress more even.

It should be noted that besides the first cross beam 11 and the second cross beam, a plurality of other cross beams are disposed between the two track beams 12, and all the cross beams are disposed between the two track beams 12 and are spaced apart from each other in the longitudinal bridge direction.

The substructure 20 comprises a first substructure 21 and a second substructure 22, the first substructure 21 supporting the first beam 11, i.e. the forces experienced on the first beam 11 can be transferred to the first substructure 21 and through the first substructure 21 into the foundation, making the bridge structure more stable. The second substructure 22 is disposed at a lower side of the space between the first beam 11 and the second beam, that is, the first beam 11 and the second beam are respectively located at two sides of the second substructure 22.

The first arch rib structure 30 is connected with each track beam 12 through the first connecting piece 40 in the area of the upper side of the track assembly 10, and the dead weight of the track beam 12 and the load of the vehicle on the beam can be transmitted to the first arch rib structure 30 through the first connecting piece 40, so as to share the bearing pressure of the track beam 12 and improve the stability of the bridge.

The first connecting member 40 may be a hanger bar, which may be a high-strength wire bundle, a thick steel bar, reinforced concrete or prestressed concrete member, etc., to enhance the stability of the first arch rib.

The first arch rib structure 30 has a first arch foot and a second arch foot, the first arch foot is connected with the first beam 11, that is, the first arch foot is directly connected with the first beam 11, namely, the through arch foot, the first arch rib structure 30 can transmit the acting force from the track beam 12 and the self gravity to the first beam 11, and transmit the acting force to the foundation through the supporting function of the first substructure 21.

The second arch foot extends from between the two track beams 12 to the lower part of the track assembly 10 and is connected with the second substructure 22, that is, the second arch foot is directly connected with the second substructure 22 after passing through the track assembly 10, and is a half-through arch foot, which can provide horizontal thrust to reduce the bending moment of the first arch rib structure 30, thereby improving the rigidity of the structure.

One end of the supporting component 50 is connected with the second substructure 22, and the other end of the supporting component 50 is connected with the second beam, so that the horizontal force generated by the first arch rib structure 30 can be balanced, the pressure of the second substructure 22 is reduced, and the safety performance of the bridge is improved.

In one embodiment, the main span of the bridge can reach more than 60m, and larger span capacity is realized.

In one embodiment, referring to fig. 4, the second substructure 22 includes a first platform 221, and the second arch foot and supporting element 50 are connected to the first platform 221, that is, the second arch foot and supporting element 50 may be directly supported on the first platform 221, or may not be connected to the bridge pier 223.

It should be noted that the second arch foot and support assembly 50 may be connected to the same position on the first platform 221, or may be connected to different positions on the first platform 221.

In one embodiment, referring to fig. 1, the second substructure 22 includes an abutment 223 and a second platform 222, the abutment 223 is connected to the second platform 222, and the second arch and the supporting element 50 are both connected to the abutment 223, that is, after the second arch and the supporting element 50 are connected to the abutment 223, the abutment 223 is connected to the second platform 222, and the force is transmitted to the foundation through the foundation.

In one embodiment, referring to fig. 3, the supporting component 50 is a slant leg, one end of the slant leg is connected to the second substructure 22, and the other end is connected to the second beam, so as to balance the internal force of the main beam.

In an embodiment, referring to fig. 3, the continuous rigid frame arch bridge further includes a first movable support, the first movable support is disposed on the top of the first substructure 21, the first beam 11 is connected to the first movable support, the track assembly 10 can horizontally displace at the first movable support, and when the structure expands with heat and contracts with cold due to the change of the external environment temperature, the track assembly 10 can perform necessary horizontal displacement at the first movable support, so as to reduce the temperature stress generated by the structural limitation in the continuous rigid frame arch bridge and maintain the stability of the bridge.

In some embodiments, the diagonal leg may also be fixedly connected to the second cross member.

In one embodiment, referring to fig. 1, the support assembly 50 includes a second rib structure 52 and a plurality of second connecting members 51, the second rib structure 52 is disposed between the two track beams 12, the second rib structure 52 has a third rib foot and a fourth rib foot, and the substructure 20 further includes a third substructure 23.

The third substructure 23 supports the second beam, the force transmitted to the second beam by the bridge can be transmitted to the foundation through the third substructure 23, the third arch foot of the second arch rib structure 52 is connected with the second beam, the fourth arch foot extends to the lower part of the track assembly 10 from between the two track beams 12 and is connected with the second substructure 22, one part of the force of the second arch rib structure 52 can be transmitted to the third substructure 23 through the second beam, and the other part can be directly connected with the second substructure 22 to complete the force transmission, so that the force transmission of the bridge can be smoother, and the beam body is more stable.

The second arch rib structure 52 is connected with each track beam 12 through the second connecting piece 51 in the area of the upper side of the track assembly 10, and the self weight of the track beam 12 and the load of the vehicle on the beam can be transmitted to the second arch rib structure 52 through the second connecting piece 51 and transmitted to the foundation through the third substructure 23 and the second substructure 22, so that the stress is more uniform.

It will be appreciated that as the bridge span increases, the substructure 20 may also be provided with a plurality of other substructures which may be used to support other beams than the first beam 11 and the second beam.

The second connector 51 may be a hanger bar, which may be a high-strength wire bundle, a thick steel bar, reinforced concrete or prestressed concrete member, etc., to enhance the stability of the first arch rib.

In one embodiment, referring to fig. 1, the substructure 20 includes a third substructure 23, and the continuous rigid frame arch bridge includes a first movable support and a second movable support, the first movable support is disposed on the top of the first substructure 21, the first beam 11 is connected to the first movable support, the second movable support is disposed on the top of the third substructure 23, and the second beam is connected to the second movable support to adapt to the expansion and contraction deformation of the bridge structure caused by environmental changes such as temperature and humidity.

That is to say, the first beam is movably connected with the first substructure 21, and the second arch springing is fixedly connected with the second substructure 22, so that the bridge structure has larger vertical, transverse and torsional rigidity, and the influence caused by temperature stress can be reduced.

It should be noted that, when there are a plurality of other substructures in the substructure 20, other beams except the first beam 11 and the second beam are also movably connected to their corresponding substructures.

In one embodiment, referring to fig. 1, the area of the first rib structure 30 on the upper side of the track assembly 10 and the area of the second rib structure 52 on the upper side of the track assembly 10 are asymmetric arch axes.

It should be noted that the area of the first rib structure 30 or the second rib structure 52 on the upper side of the track assembly 10 may be asymmetric with respect to the respective vertex vertical central axes, or the area of the first rib structure 30 and the second rib structure 52 on the upper side of the track assembly 10 may be asymmetric with respect to each other.

In a specific embodiment, please refer to fig. 1, the bridge span corresponding to the first arch rib structure is a mid-span, the bridge span corresponding to the second arch rib structure is a side-span, the first arch rib structure 30 has a larger appearance than the second arch rib structure 52, the mid-span and the side-span are skillfully matched, the arch axes of the first arch rib structure 30 and the second arch rib structure 52 are broken line type, and the vertexes of the arch axes of the first arch rib structure and the second arch rib structure are close to the second substructure 22 side, so as to form an asymmetric "heart pulse beating" shape, the overall shape is simple, beautiful and innovative, and the landscape requirements of the bridge structures in cities and scenic spots are met.

In one embodiment, the first arch rib structure 30 and the second arch rib structure 52 are both steel box structures, and the structural section may be a single box and single chamber section, and the section is formed by enclosing an upper top plate, two side plates and a lower bottom plate.

In an embodiment, referring to fig. 1 and fig. 3, the area of the first arch rib structure 30 on the lower side of the track assembly 10 and the area of the supporting assembly 50 on the lower side of the track assembly 10 are symmetrically disposed, and the two areas may be symmetrically disposed about the vertical central axis of the second substructure 22, or may be symmetrically disposed about any vertical axis of the second substructure 22, so that the horizontal forces at the second substructure 22 are balanced, the horizontal forces applied to the foundation are reduced, and the amount of foundation engineering is saved.

It should be noted that when the support member 50 is a slant leg, the whole slant leg 51 is located at the lower side of the track member 10.

In an embodiment, the first arch rib structure 30, the second arch rib structure 52, the first connecting member 40, the second connecting member 51, the track beam 12, the first beam 11 and the second beam are all steel structures, and can be prefabricated in a factory and assembled by welding on site, so that the construction is convenient and fast, and the practicability is strong.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.