CN113832831B - Modularized gas-supporting rut type bridge - Google Patents

Abstract

The invention relates to a modular gas-supported rut bridge, comprising: a plurality of bridge rut units arranged in parallel; the bridge track unit comprises a plurality of middle bridge section modules, two end bridge section modules and a steel cable, wherein the steel cable is detachable from the end bridge section modules; the plurality of middle bridge section modules are arranged between the two end bridge section modules; when the steel cable is connected with the end bridge joint module, the bridge track unit is arched upwards; when the steel cable is separated from the end bridge joint module, the bridge rut unit is straight. The bridge section module has few types, adopts a foldable plate-bag combined structure, has light dead weight and small storage volume, and is convenient for high-efficiency transportation; the bridge joint module can be constructed into an upper arch-shaped bridge track unit for erecting a cross-ditch bridge, and also can be constructed into a flat bridge track unit for erecting a river floating bridge, so that the functions are various; the bridge rut units can be used independently, and also can be used by a plurality of transversely arranged and combined, so that the use patterns are flexible and various.

Description

Modularized gas-supporting rut type bridge

Technical Field

The invention relates to the field of transportation engineering guarantee, in particular to a modularized gas-supporting rut type bridge.

Background

The existing light-weight fittable bridge Liang Qicai is generally used by the army to overcome small ravines or rivers and ensure that light vehicles and armed personnel are quickly maneuvered, and is also often used as an emergency and temporary bridge for ensuring that local vehicles or personnel pass through as dual-purpose equipment for the army and the civil engineering in rescue and relief work.

However, the existing light-weight assemblable bridge equipment has the following defects: (1) The structure strength is low, the span capable of overcoming the gully obstacle is limited, and the passing guarantee requirements of the existing light vehicles and local rescue and relief passing vehicles of the army are difficult to meet; (2) The method has single use style, can be only used for erecting one of a cross-ditch bridge or a river floating bridge, and has poor use environment adaptability; (3) The structure is heavy in weight, the storage and transportation volume can not be compressed, and the transportation efficiency is low.

Disclosure of Invention

The invention aims to provide a modularized air supporting rut type bridge.

To achieve the above object, the present invention provides a modular gas strut rut bridge comprising: a plurality of bridge rut units arranged in parallel;

The bridge track unit comprises a plurality of middle bridge section modules and two end bridge section modules, and a steel cable which is detachable from the end bridge section modules;

the middle bridge section modules are arranged between the two end bridge section modules;

When the steel cable is connected with the end bridge joint module, the bridge track unit is in an upper arch shape;

when the steel cable is separated from the end bridge joint module, the bridge rut unit is in a straight shape.

According to one aspect of the invention, when the bridge rutting units are arched upwards, a plurality of connected middle bridge joint modules are arranged in an inclined butt joint way at a certain angle;

When the bridge rut units are straight, the plurality of connected middle bridge joint modules are in flush butt joint.

According to one aspect of the invention, the middle bridge module comprises: the inflatable and deflatable air bag comprises a panel assembly, an inflatable and deflatable air bag, a bottom pull rod assembly and a transverse fixed steel cable;

The panel assembly is connected with the bottom pull rod assembly through the transverse fixed steel cable and is positioned above the bottom pull rod assembly;

The airbag is disposed between the panel assembly and the bottom drawbar assembly.

According to one aspect of the invention, both the panel assembly and the bottom drawbar assembly are collapsible.

According to one aspect of the present invention, the panel assembly includes: two movably connected bridge deck boards;

the bottom drawbar assembly includes: two movably connected grid components;

adjacent bridge span panels are connected by adopting long-strip panel connecting pieces along the length direction of the bridge joint modules;

opposite ends of the panel connecting piece are hinged with the end parts of the bridge span panel respectively;

One end of each adjacent grating component is hinged, and the other end of each grating component, which is far away from the hinged end, is provided with a telescopic longitudinal connecting structure.

According to one aspect of the invention, a first pressure bearing piece is arranged on the end face of one end of the bridge span panel connected with the panel connecting piece along the length direction of the bridge joint module;

a first locking connection structure is arranged at the side edge of the upper surface of one end of the bridge span panel connected with the panel connecting piece along the length direction of the bridge joint module, and is used for realizing the connection of the upper parts of the adjacent bridge span panels after being unfolded;

the first locking connection structure includes: an upper connecting plate body and an upper connecting hole;

along the length direction of the bridge joint module, a through hole penetrating through the body of the upper connecting plate body is formed at one end of the upper connecting plate body, which is far away from the bridge span panel;

Along the width direction of the bridge joint module, the upper connecting plate body and the upper connecting holes are arranged at intervals at the side edge positions of the bridge span panel.

According to one aspect of the invention, along the length direction of the bridge joint module, a second pressure-bearing piece is arranged on the end face of one end of the bridge span panel, which is far away from the panel connecting piece, and an inclination angle adjusting seat for adjusting the inclination angle of the second pressure-bearing piece is used for expanding a connecting structure;

The expansion connection structure includes: a monaural joint and a binaural joint;

The single lug connector and the double lug connector are arranged at intervals, and the second pressure-bearing piece is located between the single lug connector and the double lug connector.

According to one aspect of the invention, a second locking connection structure with adjustable connection distance is arranged at the side edge position of the upper surface of one end of the bridge span panel far away from the panel connection piece along the length direction of the bridge joint module;

the second locking connection structure includes: a clasp and a plurality of clasp seats;

The plurality of buckle seats are arranged at intervals along the length direction of the bridge joint module;

along the width direction of the bridge joint module, the retaining ring and the retaining ring seat are arranged at intervals at the side edge position of the upper surface of the end part of the bridge span panel.

According to one aspect of the invention, the bridge deck is a flat box body comprising: a panel plate body, the panel body being supported;

the plate body is supported to be of a frame structure which is matched with the shape of the panel plate body;

the panel plate body is arranged on one side of the plate body support or respectively arranged on two opposite sides of the plate body support;

The grille assembly includes: a transverse pull rod and a longitudinal pull rod;

The transverse pull rods and the longitudinal pull rods are vertically and alternately connected;

the adjacent grid components are hinged through a joint arranged at one end of the longitudinal pull rod, and the longitudinal connecting structure is arranged at the other end of the longitudinal pull rod;

One end of the transverse fixed steel cable is connected with the end part of the transverse pull rod, and the other end of the transverse fixed steel cable is connected with the bridge span panel.

According to one aspect of the invention, the end bridge module comprises: the first plate body, the second plate body, the third plate body and the internal support plate body;

Opposite ends of the second plate body are respectively hinged with the first plate body and the third plate body;

a first limiting structure is arranged at one end, far away from the second plate body, of the first plate body;

a second limiting structure is arranged at one end, far away from the second plate body, of the third plate body;

The second limiting structure is detachably connected with the first limiting structure;

a third locking connection structure used for being connected with the second locking connection structure is arranged at one end of the third plate body adjacent to the second plate body;

The third locking connection structure includes: a locking buckle and a locking buckle seat;

the locking buckle ring and the locking buckle ring seat are arranged at intervals at the side edge position of the upper surface of the end part of the third plate body along the width direction of the end bridge joint module;

One end of the second plate body, which is connected with the third plate body, is provided with a first hinge structure used for being connected with the expansion connection structure;

The first hinge structure includes: the single-lug hinged joint is used for being connected with the double-lug connector and the double-lug hinged joint is used for being connected with the single-lug connector;

One end of the second plate body, which is connected with the first plate body, is provided with a plurality of second hinge structures used for being connected with the longitudinal connecting structures of the grid assembly, and a plurality of steel rope connecting pieces;

The plurality of steel cable connectors are arranged at intervals along the width direction of the end bridge section module, and the plurality of second hinge structures are sequentially arranged among the steel cable connectors;

the two opposite ends of the steel cable are connected with the steel cable connecting piece of the end bridge section module.

According to one scheme of the invention, the invention has simple structure and multiple functions, and can be erected above a gully and also can be erected on a river floating bridge. In addition, the bridge track units of the gas-supported track bridge can be used independently, and also can be used by a plurality of transversely arranged and combined, so that the use patterns are flexible and various.

According to one scheme of the invention, the modules are few in types, are of foldable structures, are easy to process and manufacture, are light in dead weight, small in storage volume and convenient to transport efficiently; the structural dimensions and the connection structure of the similar modules are all designed in the same way, the second connection locking device and the bottom longitudinal expansion connection structure in the same middle bridge section module are arranged in the opposite symmetry way at the two ends of the modules, the similar modules can be used interchangeably, no direction requirement exists during connection, and the assembly and erection functions of the bridge track units are simple and quick.

According to one scheme of the invention, the middle bridge section module and the end bridge section module adopt foldable structures; the two bridge deck boards of the middle bridge section module and the two groups of bottom pull rod assemblies are arranged in a one-to-one correspondence manner, and the air bags are clamped between the two bridge deck boards, the bottom pull rod assemblies and the air bags in a contracted state can be folded together in the same direction; the three panels of the end bridge joint module are connected in a hinged mode, and when the end bridge joint module is disassembled, the three panels can be folded together after the middle supporting plate is taken out; the folded bridge section module can greatly reduce the volume of the bridge section module, save the storage and transportation space and improve the transportation efficiency. In addition, through setting up of bridge span panel and bottom pull rod subassembly with gasbag centre gripping, play the guard action to the gasbag in the module, can effectively reduce the wearing and tearing that the gasbag produced in moving or transporting along with the module together, further improved gasbag life.

According to the scheme of the invention, the panel connecting piece with a certain length is arranged for connecting the adjacent bridge span panels, so that a certain gap is reserved between the two folded bridge span panels, and the gap can just accommodate the folded bottom pull rod assembly and the airbag; the three synchronous folding and unfolding are realized, the unfolding setting and folding and withdrawing operation procedures are simplified, and the operation efficiency is improved.

According to the scheme of the invention, the longitudinal pull rod is arranged in the bottom pull rod assembly in contact with the concave position of the adjacent air bag, so that the limit fixation of the longitudinal pull rod to the air bag can be realized, the position stability of the air bag can be ensured, and the structural strength of the air bag can be ensured. In addition, the bottom pull rod assembly is high in structural strength by adopting the frame structure, stress deformation of the bottom pull rod assembly is remarkably reduced, the overall rigidity of the bridge is further improved, and deformation of the bridge under the action of external load is reduced.

According to the scheme, when the middle bridge section module is in an unfolded connection state, the longitudinal pressure born by the bridge span panels is longitudinally conducted among the bridge span panels through the first pressure bearing piece and the second pressure bearing piece, so that the pressure born by the panel connecting piece, the first locking connecting structure and the bottom longitudinal expansion connecting structure is reduced, and the connecting pins at the positions are protected; meanwhile, by arranging the rubber cushion layer on the surface of the pressure-bearing piece, rigid impact between the longitudinal connecting members of the adjacent bridge span panels in the using process can be effectively reduced, the influence of impact force on the connecting pins of the longitudinal connecting members is reduced, and the reliability of the connecting structure between bridge section modules and the service life of the bridge section modules are improved.

According to the scheme of the invention, the two ends of the middle bridge section module are provided with the inclination angle adjusting seats at the second pressure bearing parts, so that the second pressure bearing parts can protrude out of the end face of the bridge span panel for a certain distance, and when the inclination angle adjusting seats are in an extending inclination state, a bridge track unit formed by splicing the bridge section modules is in an upper arch shape; when the inclination angle adjusting seat is in a retracted state, the bridge track units formed by splicing the bridge section modules are straight.

According to the scheme of the invention, two retaining ring seats of the second locking connection structure of the middle bridge section module are arranged at the front and back of the longitudinal direction of the bridge span panel, the structure is matched with the extending and inclining state of the inclination angle adjusting seat for use, when the inclination angle adjusting seat is in the extending and inclining state, the retaining ring of the second locking connection structure is hung on the inner side retaining ring seat close to the end part, and a bridge track unit formed by splicing the bridge section modules is in an upper arch shape; when the inclination angle adjusting seat is in a retracted state, the retaining ring of the second locking connection structure is hung on the outer retaining ring seat far away from the end part, and the bridge track unit formed by splicing the bridge section modules is straight.

According to the scheme of the invention, the telescopic longitudinal connecting structures are arranged at the two ends of the bottom pull rod assembly, which are far away from the hinging positions, and can be used for adjusting the longitudinal length of the bottom pull rod assembly which is longitudinally connected into a whole, when the telescopic longitudinal connecting structures are in an extending state, the longitudinal connecting length of the bottom pull rod assembly is prolonged, and the bottom pull rod assembly is matched with the extending inclined state of the inclined angle adjusting seat at the end part of the bridge deck and the buckle ring of the upper second locking connecting structure is hung on the inner buckle ring seat for use, so that the bridge rut unit structure is an upper arch bridge; when the telescopic longitudinal connecting structure is in a retracted state, the longitudinal connecting length of the bottom pull rod assembly is shortened, and the telescopic longitudinal connecting structure is matched with the retracted state of the inclination angle adjusting seat at the end part of the bridge span panel and the buckle ring of the upper second locking structure to be hung on the outer buckle ring seat for use, so that the bridge track unit can be in a straight shape.

According to the scheme of the invention, the straight bridge track unit assembled by the middle bridge section module and the end bridge section module consists of four parts of structures of a bridge span panel, a bottom pull rod assembly, an air bag and a transverse fixed steel rope which are longitudinally spliced into a whole, the air bag forms an elastic support for the upper bridge span panel, and can transfer the load on the bridge span panel to the bottom pull rod assembly, so that the bending moment effect of the load on the bridge is changed into the longitudinal compression of the upper bridge span panel and the longitudinal stretching effect of the bottom pull rod assembly, the structure is favorable for fully playing the tensile compression performance of materials, and the number of structural materials and the weight of the structure are greatly reduced while the bearing capacity of the structure is ensured; in addition, the air bag can provide larger buoyancy, so the structure can be used as a pontoon; meanwhile, the bridge span panel and the bottom pull rod assembly are bound into a whole through the transverse steel cable, so that the overall rigidity of the bridge track unit can be increased, and the deformation instability resistance of the bridge track unit is improved.

According to the scheme of the invention, the arched bridge track unit formed by splicing the bridge joint modules consists of four parts of structures of a bridge span panel which is longitudinally spliced into a whole and is arched, an upper arched bottom pull rod assembly, an air bag and a transverse fixed steel rope, the bridge span panel moves downwards under the action of load on the upper part of the bridge span panel, the arch span formed by the bridge span panel is enlarged, the bottom pull rod assembly at the lower part of the air bag is stretched due to the enlargement of the arch span formed by the bridge span panel, the downward movement is generated, the downward movement amount is larger than the downward movement amount of the bridge span panel, and the downward movement of the bottom pull rod assembly cannot be freely generated under the limitation of the transverse fixed steel rope and the upper arch span panel, so that the air bag simultaneously forms an elastic support on the upper arch span panel, the arched bottom pull rod assembly and the transverse fixed steel rope positioned at the two sides of the bridge span panel; the air bag can provide initial pre-tension for the structure when not loaded, and the pre-tension can improve the integral rigidity of the arch bridge rutting unit structure and the capacity of resisting deformation instability. Compared with a straight air-supported bridge structure, the air-supported arch chord-opening bridge structure has the advantages of higher structural rigidity and stronger deformation resistance, so that the air-supported arch chord-opening bridge structure is more suitable for erecting a ditch-crossing bridge with only two ends being supported.

According to the scheme of the invention, when the bridge track unit is in an arch shape, the end bridge joint modules are connected by arranging the bottom tensioning steel cable, so that the overall rigidity of the bridge track unit is increased, the airbag support arch Zhang Xianqiao can bear heavier loads (such as vehicles and the like), meanwhile, the influence of the protrusions in the span range on the erection and use of the bridge track unit can be effectively avoided, the bridge track unit can adapt to more complex gully terrain, and the environmental adaptability of the bridge track unit is improved. In addition, when the bridge track units are in a straight shape, the bottom is not required to be provided with a tensioning steel rope, and at the moment, the bridge is mainly used as a river floating bridge, so that the application range of the bridge is further expanded into a waterway dual-purpose bridge, and the use functions of the bridge are further enriched.

According to the scheme of the invention, the bridge track units can be used independently for guaranteeing personnel to pass, and two or more bridge track units can be transversely combined together by utilizing the bridge track unit transverse connecting piece, so that the bridge deck width of the formed track bridge is increased, the overall torsional rigidity of the bridge and the buoyancy of the bridge are also increased, the bearing capacity of the bridge is increased, and the passing of small vehicles can be guaranteed.

Drawings

FIG. 1 is a perspective view schematically illustrating a modular gas strut rut bridge according to one embodiment of the present invention;

FIG. 2 is a block diagram schematically illustrating a modular gas strut rut bridge according to another embodiment of the present invention;

FIG. 3 is a perspective view schematically illustrating a modular gas strut rut bridge according to another embodiment of the present invention;

FIG. 4 is a block diagram schematically illustrating a bridge rut unit according to one embodiment of the present invention;

FIG. 5 is a bottom view schematically illustrating a bridge rut unit according to one embodiment of the invention;

FIG. 6 is a top view schematically illustrating a bridge rut unit according to one embodiment of the invention;

FIG. 7 is a cross-sectional view schematically illustrating the position A-A in FIG. 6;

FIG. 8 is a cross-sectional view schematically illustrating the B-B position of FIG. 6;

FIG. 9 is a block diagram schematically illustrating a bridge rut unit according to another embodiment of the present invention;

FIG. 10 is a block diagram schematically illustrating a middle axle module according to one embodiment of the present invention;

FIG. 11 is a bottom view schematically illustrating a middle axle module in accordance with one embodiment of the invention;

FIG. 12 is a block diagram schematically illustrating a longitudinal connecting structure according to one embodiment of the present invention;

FIG. 13 is a cross-sectional view schematically illustrating a middle axle module according to one embodiment of the invention;

FIG. 14 is a folding state diagram schematically illustrating a middle axle module according to one embodiment of the present invention;

FIG. 15 is a perspective view schematically illustrating a bridge deck according to one embodiment of the invention;

FIG. 16 is a bottom view schematically illustrating a bridge deck according to one embodiment of the invention;

FIG. 17 is a connection block diagram schematically illustrating a bridge deck of an adjacent panel assembly according to one embodiment of the invention;

Fig. 18 is a block diagram schematically showing an end bridge module according to an embodiment of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

In describing embodiments of the present invention, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "end," "side," and the like are used in terms of orientation or positional relationship shown in the drawings to facilitate describing the present invention and simplify the description, but do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus the above terms should not be construed as limiting the present invention.

The present invention will be described in detail below with reference to the drawings and the specific embodiments, which are not described in detail herein, but the embodiments of the present invention are not limited to the following embodiments.

As shown in fig. 1, according to an embodiment of the present invention, a modular gas-supported rut bridge of the present invention includes: and a plurality of bridge rut units are arranged in parallel in a combined mode. In this embodiment, the bridge rut unit comprises a plurality of middle bridge section modules 1 and two end bridge section modules 2, and a wire rope 3 which is detachable from the end bridge section modules 2. In the present embodiment, a plurality of center bridge modules 1 are provided between two end bridge modules 2; when the steel rope 3 is connected with the end bridge joint module 2, the bridge rut units are arched upwards (see fig. 1, 4 and 5); when the wire rope 3 is separated from the end bridge module 2, the bridge rut unit is straight (see fig. 2, 3, 9).

As shown in connection with fig. 1, 4, 5,6, 7 and 8, according to one embodiment of the present invention, when the bridge rutting unit is in an up arch shape, a plurality of connected middle bridge section modules 1 are arranged to incline with each other.

As shown in connection with fig. 2,3 and 9, according to another embodiment of the present invention, when the bridge rut unit is flat, a plurality of connected middle bridge modules 1 are arranged flush with each other.

As shown in connection with fig. 4, 5, 6, 7, 10, 11, according to one embodiment of the present invention, a bridge rut unit comprises: a plurality of middle bridge section modules 1 and two end bridge section modules 2 which are detachably connected. In the present embodiment, the middle bridge module 1 includes: the panel assembly A, the inflatable and deflatable air bag B, the bottom pull rod assembly C and the transverse fixed steel cable D. In this embodiment, the panel assembly a is connected to the bottom drawbar assembly C by a transverse securing cable D above the bottom drawbar assembly C. In this embodiment, the airbag B is disposed between the panel assembly a and the bottom stay assembly C. In this embodiment, the panel assemblies a and the bottom tie bar assemblies C are disposed in one-to-one correspondence.

Referring to fig. 10 and 11, according to one embodiment of the present invention, both the panel assembly a and the bottom drawbar assembly C are foldable.

Referring to fig. 10 and 11, according to an embodiment of the present invention, a panel assembly a includes: two movably connected bridge decks 11; the bottom drawbar assembly C includes: two articulating grill assemblies 12. In this embodiment, a plurality of hanging rings are respectively arranged on two sides of the bridge deck 11 in the width direction, and then the hanging rings are connected with the transverse pull rods 12a of the grille assembly 12 by adopting the transverse fixed steel cables D, so that the bridge deck 11 and the grille assembly 12 can be flexibly connected in a combined manner.

In this embodiment, the air bag B is located between the grille assembly 12 and the bridge deck 11. When the air bag B is in an inflated state, the bottom pull rod assembly C is far away from the panel assembly A, and the transverse fixed steel rope D laterally limits the inflated air bag B to ensure the position stability of the air bag; when the air bag B is in the air-evacuating contracted state, the panel assembly A, the bottom pull rod assembly C and the air bag B in the contracted state can be folded together in the same direction.

In this embodiment, when the panel assembly a and the bottom tie bar assembly C are in the folded state, the bridge deck 11 of the same panel assembly a is disposed opposite to each other, and the grill assemblies 12 of the bottom tie bar assembly C are disposed in opposite contact with each other, and the air bag B for evacuating air is folded along with and between the bridge deck and the bottom tie bar assembly. Through the arrangement, the size of the middle bridge module 1 during storage can be minimized, and the middle bridge module is convenient to store and carry.

In the embodiment, the air bag is made of high-strength PVC material, so that the service life and the bearing capacity of the invention are better.

In the present embodiment, adjacent bridge deck panels 11 are connected by a long panel connector 13 along the length direction of the bridge rut unit; opposite ends of the deck connector 13 are hinged to respective ends of the bridge deck 11. In this embodiment, the panel connecting members 13 are metal plates with openings at both ends, and are hinged to the lower end of the bridge deck 11 by pins. Furthermore, due to the existence of the bottom connecting plate 13, a certain gap is left between the two folded bridge span panels 11, and the gap can just accommodate the folded bottom pull rod assembly C and the air bag B; and the three are synchronously folded and unfolded, so that the operation procedures of unfolding arrangement and folding and withdrawing are simplified, and the operation efficiency is improved.

Through the arrangement, the air bag can be inflated rapidly when in use and deflated rapidly when in removal, so that the design purposes of small storage and transportation volume and high transportation efficiency of the folded module are achieved.

Through the arrangement, the panel assembly and the bottom pull rod assembly clamp the air bag in the middle, the air bag is protected when the module is folded and stored, abrasion of the air bag in moving or transporting of the module can be effectively reduced, and the service life of the air bag is further prolonged.

Referring to fig. 10, 11, 13 and 14, according to one embodiment of the present invention, mounting connection locations 11a are provided at opposite ends of two bridge span panels 11 in a panel assembly a along the length direction of a middle bridge module. In the present embodiment, the mounting connection locations 11a of two adjacent bridge deck boards 11 in the same panel assembly a are opposite, and thus opposite ends of the panel connection 13 are hinged to the ends of the bridge deck boards 11 at the mounting connection locations 11a, respectively. In this embodiment, the adjacent bridge deck boards 11 of the same deck assembly a may be connected in advance by the deck connector 13, and then the installation connection position 11a thereof may be located below and covered by the deck board 111, so as to ensure that the connection position is hidden and protected, which is beneficial to ensuring the connection stability of the connection position and improving the service life.

In the present embodiment, the connection position of the panel connection member 13 and the bridge deck 11 is to take into account that when the panel assembly a is unfolded, the first pressure receiving members 14 on the end surfaces of the adjacent bridge deck 11 in the same panel assembly a can abut against each other, and in the folded state, the adjacent bridge deck 11 can be disposed in a spaced-apart opposition to each other, so that the grille assembly 12 and the airbag B can be accommodated by the space between the bridge deck 11.

According to the invention, by providing the panel connecting piece 13 with a certain length for connecting the adjacent bridge deck 11, the bearing capacity of the bridge module in the unfolded connection state is further ensured under the function of folding and unfolding the bridge deck of the panel assembly A.

According to one embodiment of the invention, the length of the air bag B in the inflated state is slightly larger than the lengths of the two span panels 11 in the panel assembly, so that the air bags between the two connected modules generate a certain pushing force between each other after being inflated, the purpose of applying a certain pretightening force to the bridge structure through the inflation of the air bags is achieved, and the purpose of bearing longitudinal pressure through the transmission of the air bags in use is achieved.

In the present embodiment, the airbag B is provided with the reinforcing curtain in the longitudinal direction, so that the airbag is flat after being inflated, and the whole of the combination of the bridge deck and the grille assembly is supported by the airbag, which is advantageous for guaranteeing the use stability of the present invention.

Referring to fig. 11 and 12, according to one embodiment of the present invention, one end of the adjacent grill assembly 12 is hinged along the length of the bridge module, and the other end of the grill assembly 12 remote from the hinged end is provided with a telescopic longitudinal connection 121.

Through setting up telescopic bottom pull rod longitudinal connection structure 121 in the one end that grid subassembly 12 kept away from articulated position, when panel components A's concatenation each other like this, the telescopic longitudinal connection structure 121 of adjacent bottom pull rod subassembly C between the subassembly can be according to the combined form (arch form or straight form) adjustment bottom pull rod subassembly C of a plurality of panel components A to make bottom pull rod subassembly C can constitute a corresponding vertical continuous reinforced structure with the bridge span panel, and then be favorable to guaranteeing the firm stability of whole structure after the concatenation.

In this embodiment, the telescopic longitudinal connection 121 of the bottom drawbar assembly C includes: the longitudinal connecting end 1211 of the bottom drawbar assembly C, the position adjustment end 1212 connected to the longitudinal connecting end 1211, the position adjustment end 1212 being slidably connected to the longitudinal drawbar 12b of the bottom drawbar assembly C. In the present embodiment, the longitudinal connecting ends 1211 may be formed of a plurality of plate-shaped bodies disposed at intervals, and coaxial through holes are provided in each plate-shaped body, so that the inter-module longitudinal connecting ends 1211 can be connected in a hinged manner after being inserted into each other. The position adjustment end 1212 and the longitudinal pull rod 12b of the bottom pull rod assembly C are slidably connected with a limiting structure (such as a through hole), and when the longitudinal connecting structure 121 needs to be telescopically adjusted in position, the position adjustment can be realized through the matching connection of the pin shaft and the limiting structure at different positions, and the adjustment is convenient and reliable, simple and flexible.

As shown in fig. 14, 15, 16 and 17, according to an embodiment of the present invention, a first pressure receiving member 14 is provided on an end surface of one end of the bridge deck 11 connected to the deck connector 13 in the length direction of the bridge rut unit. In this embodiment, the first pressure-bearing member 14 is in a strip structure, and a rubber layer is attached to the surface of the first pressure-bearing member 14, and is fixedly mounted on the end surface of the bridge deck 11, and the positions of the first pressure-bearing member 14 mounted on the adjacent bridge deck 11 in the same deck assembly a are consistent, so that the first pressure-bearing member 14 on the adjacent bridge deck 11 can abut against each other in a mutually opposite manner in the middle bridge module unfolding state, so as to achieve the effects of transmitting the longitudinal pressure and buffering of the bridge deck.

As shown in fig. 14, 15, 16 and 17, according to an embodiment of the present invention, a first locking connection structure 15 is provided at a side edge of an upper surface of an end of the bridge span panel 11 connected to the panel connection member 13 in a length direction of the bridge track unit, so as to achieve upper connection of the adjacent bridge span panels 11 after being unfolded. In this embodiment, the first locking connection structure 15 is used to further achieve the longitudinal connection and fixation of the adjacent bridge deck boards 11 in the panel assembly a in the unfolded state of the panel assembly a, so as to ensure the longitudinal rigid connection of the adjacent bridge deck boards in the unfolded state.

In the present embodiment, the first locking connection 15 includes: an upper connection plate body 151 and an upper connection hole 152. In this embodiment, the upper connecting plate 151 is a long plate, one end of the upper connecting plate is fixedly connected to the side of the end of the bridge deck 11 along the length direction of the middle bridge module, the other end of the upper connecting plate extends along the direction away from the bridge deck 11, and a through hole 1511 penetrating the upper connecting plate is provided at the extending end of the upper connecting plate 151. In the present embodiment, the upper connection plate body 151 and the upper connection hole 152 are provided at a spacing in the width direction of the center bridge module at the side edge position of the bridge deck 11. In this embodiment, the upper connecting hole 152 is connected to the through hole 1511 on the upper connecting plate 151, and when two bridge deck boards 11 in the same panel assembly a are in the unfolded state, the positions of the upper connecting plate 151 and the connecting hole 152 on the upper surfaces of the end parts of the two bridge deck boards in the same module are in antisymmetric arrangement; and further, the first locking connection structures 15 of the two bridge span panels 11 can mutually achieve interlocking (namely, the upper connection plate body 151 of the first bridge span panel 11 and the upper connection hole 152 of the second bridge span panel 11 in the same module are connected through a connecting piece, and the upper connection plate body 151 of the second bridge span panel 11 and the upper connection hole 152 of the first bridge span panel 11 are connected through a connecting piece), so that the rigid connection of the two bridge span panels in the module is achieved.

The first pressure bearing piece is used for longitudinally transmitting the longitudinal pressure born by the bridge deck boards among the bridge deck boards, so that the pressure born by the deck board connecting piece and the first locking connecting structure is reduced, the rigid impact between the adjacent bridge deck board longitudinal connecting members in the using process is effectively reduced, the connecting pins at the positions are protected, and the reliability of the connecting structure among bridge section modules, the service life of the bridge rutting units and the bearing capacity are improved.

As shown in fig. 14, 15, 16 and 17, according to an embodiment of the present invention, a second pressure receiving member 16 is provided on an end surface of the bridge deck 11 far from the deck connecting member 13 along a length direction of the bridge rut unit, an inclination angle adjusting seat 18 for adjusting an inclination angle of the second pressure receiving member 16, and the connecting structure 17 is extended. In the present embodiment, the bridge deck 11 is connected to the other deck boards a in a longitudinally contacting manner by the second pressure receiving member 16, the expansion connecting structure 17, and the reclining seat 18.

In this embodiment, the lower portion of the second pressure-bearing member is fixedly connected with the inclination adjustment seat 18, and the inclination adjustment seat 18 is provided with a locking and limiting structure, when the protruding length and the inclination angle of the second pressure-bearing member need to be adjusted, the locking and limiting structure is released first, and after the protruding length and the inclination angle of the second pressure-bearing member are adjusted, the locking and limiting structure is locked again, so that the whole adjustment process is completed. In the present embodiment, the reclining seat 18 is fixedly connected to the end surface of the bridge deck 11.

The second pressure bearing piece is arranged to longitudinally transfer the longitudinal pressure born by the bridge deck boards between the bridge deck boards, so that the pressure born by the expansion connecting structure 17 is reduced, meanwhile, the rigid impact between the longitudinal connecting members of the adjacent bridge deck boards in the use process is also effectively reduced, the connecting pin of the bottom longitudinal expansion connecting structure is protected, and the reliability of the connecting structure between bridge joint modules, the service life of the bridge rut units and the bearing capacity are improved.

The second pressure bearing parts are arranged at the second pressure bearing parts at the two ends of the panel assembly so that the second pressure bearing parts can protrude out of the end face of the bridge span panel for a certain distance, and when the inclination angle adjusting parts are in an extending inclined state, a bridge track unit formed by splicing bridge section modules is in an upper arch shape; when the inclination angle adjusting seat is in a retracted state, the bridge track units formed by splicing the bridge section modules are straight.

In the present embodiment, the expansion connection structure 17 includes: a monaural joint 171 and a binaural joint 172; the monaural joint 171 and the binaural joint 172 are disposed at a spacing, and the second pressure receiving member 16 is located between the monaural joint 171 and the binaural joint 172. In this embodiment, the expansion connection structures 17 on the adjacent bridge deck boards 11 are arranged in an antisymmetric manner, that is, in the middle bridge module, when the panel components a are required to be connected, the monaural joint 171 on the end face of the bridge deck board 11 of the first panel component a is hinged with the binaural joint 172 on the end face of the bridge deck board 11 of the second panel component a through a pin shaft, and the monaural joint 171 on the end face of the bridge deck board 11 of the second panel component a is hinged with the binaural joint 172 on the end face of the bridge deck board 11 of the first panel component a through a pin shaft.

As shown in fig. 10, 14, 15, 16 and 17, according to an embodiment of the present invention, a second locking connection structure 19 with an adjustable connection distance is provided at a side position of an upper surface of one end of the bridge span panel 11 far from the panel connection 13 in a length direction of the bridge rut unit. In the present embodiment, the second locking connection 19 includes: a clasp 191 and a plurality of clasp seats 192; in the present embodiment, a plurality of clasp seats 192 are arranged at intervals along the length direction of the middle bridge module; the retaining ring 191 and the retaining ring seat 192 are disposed at intervals in the width direction of the center bridge module at the end side positions of the bridge deck plate 11. In the present embodiment, in the adjacent connected panel assemblies a, the retaining ring 191 and the retaining ring seat 192 provided on the bridge deck 11 of the previous panel assembly a are disposed in an antisymmetric manner with the retaining ring 191 and the retaining ring seat 192 provided on the bridge deck 11 of the next panel assembly a. In this embodiment, the second locking connection 19 is used to achieve an upper longitudinal expansion splice between the panel assemblies a, wherein the snap ring 191 on the bridge deck 11 of the former panel assembly a is connected to the snap ring seat 192 on the bridge deck 11 of the latter panel assembly a, and the snap ring 191 on the bridge deck 11 of the latter panel assembly a is connected to the snap ring seat 192 on the bridge deck 11 of the former panel assembly a, thereby achieving an interlocking longitudinal connection between adjacent middle bridge modules.

In the present embodiment, the selective connection between the retaining ring 191 and the retaining ring seat 192 may be performed according to the connection requirement of the adjacent panel assemblies a, and the protruding length and the inclination angle of the second pressure receiving member 16 may be adjusted. In the present embodiment, the mutual abutment between the adjacent second pressure receiving members 16 is achieved by adjusting the protruding position and the inclination angle of the inclination adjustment seat 18, and furthermore, it is necessary to adjust the telescopic length of the telescopic longitudinal connecting structure 121 in the grill assembly 12. Specifically, when the bridge rut unit formed by interconnecting the plurality of panel assemblies a is in a flat shape, the retaining ring 191 is connected to the outer retaining ring seat 192 at a relatively far distance, the second pressure bearing member 161 is retracted and in a state of being opposite to the arrangement state, and the telescopic longitudinal connecting structure 121 is in an extended state, so as to realize the flat connection of the bridge span panel and the bottom pull rod assembly. When the bridge rut unit formed by the interconnection of the panel assemblies a is in an upper arch shape, the retaining ring 191 is connected with the inner retaining ring seat 192 which is closer to the inner retaining ring seat, the second pressure bearing piece 161 is in an extending state and is in an inclined opposite setting state, and the telescopic longitudinal connecting structure 121 is in a retracting state so as to realize the arch connection of the bridge span panel and the bottom pull rod assembly.

As shown in connection with fig. 15, 16, 17, according to one embodiment of the present invention, the bridge deck 11 is a flat box-type body including: a panel plate 111, a plate support 112. In the present embodiment, the panel plate 111 is provided on one side of the plate support 112 or on opposite sides of the plate support 112, respectively. In the present embodiment, the panel support 112 is a frame structure adapted to the shape of the panel 111; the panel support 112 is a frame structure surrounded by a plurality of U-beams, and the shape of the frame structure matches the shape of the panel 111. In this embodiment, to ensure the bearing capacity of the entire bridge deck 11, an appropriate amount of i-beams may be added to the frame structure of the deck support 112 as required, so as to further improve the bearing capacity of the bridge deck, and also to enhance the support effect on the deck 111. In this embodiment, when the middle position of the frame body of the plate body support 112 is provided with the reinforcing beam for reinforcement, the stress factor can be further considered to perform corresponding optimization setting, so as to optimize the bearing capacity of the bridge span panel and the supporting function of the panel plate body by the reinforcing beam.

Through the arrangement, the bridge deck board is constructed into the flat box body by adopting the mode that the panel board body and the supporting frame are combined, so that the integral bending resistance and torsional rigidity of the bridge deck board are effectively ensured, the integral weight of the bridge deck board is effectively reduced, and the bridge deck board is easier to carry and splice and erect.

In addition, in another embodiment of the present invention, by arranging the panel plates 111 on the upper and lower sides of the plate support 112 respectively, compared with the former method in which the airbag is directly contacted with the bridge span panel frame, the combination of the upper and lower side panels and the frame can further increase the contact area between the lower airbag and the bridge span panel, the stress is more uniform, the exertion of the bearing capacity of the airbag is facilitated, the damage of the friction force between the bridge span panel and the airbag on the airbag is effectively reduced, and the service life of the airbag is prolonged.

Referring to fig. 10 and 11, the grid assembly 12 is constructed as a frame structure of a plurality of vertically and horizontally staggered square section bars connected to one another in accordance with one embodiment of the present invention. Specifically, the grille assembly 12 includes: a transverse pull rod 12a and a longitudinal pull rod 12b. In the present embodiment, the transverse tie rods 12a and the longitudinal tie rods 12b are vertically staggered; the longitudinal tie 12B is disposed in a direction corresponding to the longitudinal direction of the flat airbag B, and the longitudinal tie 12B is disposed at a position opposite to the recessed position of the airbag B. In this embodiment, opposite ends of the transverse tie rod 12a are connected to the ends of the bridge deck by transverse securing cables D.

Through the arrangement, the longitudinal pull rod 12B and the concave position of the air bag B in the grid assembly 12 are arranged oppositely, so that the limit fixation of the longitudinal pull rod 12B to the air bag B can be realized, the position stability of the air bag is ensured, and the structural strength of the grid assembly is further ensured. In addition, the bottom pull rod assembly adopting the frame structure is high in structural strength, the contact area with the air bag is increased, and the full play of the elastic supporting function of the air bag is facilitated.

In the present embodiment, the adjacent grill members 12 are hinged by a joint provided at one end of the longitudinal tie 12b, and the longitudinal connecting structure 121 is provided at the other end of the longitudinal tie 12 b.

As shown in connection with fig. 7, 8, 9, 18, according to one embodiment of the present invention, the end bridge module 2 includes: a first plate 21, a second plate 22, a third plate 23 and an inner support plate 24. In the present embodiment, opposite ends of the second plate 22 are hinged to the first plate 21 and the third plate 23, respectively; a first limiting structure 211 is arranged at one end of the first plate body 21 far away from the second plate body 22; the end of the third plate body 23 far away from the second plate body 22 is provided with a second limiting structure 213; the second limiting structure 213 is detachably connected with the first limiting structure 211.

In the present embodiment, the end of the third plate body 23 adjacent to the second plate body 22 is provided with a third locking connection structure 231 for connection with the second locking connection structure 19. In the present embodiment, the third locking connection 231 includes: a locking buckle 231a and a locking buckle seat 231b; the locking buckles 231a and the locking buckle seats 231b are disposed at intervals at side positions of the upper surface of the end portion of the third plate body 23 in the width direction of the end bridge module 2.

In the present embodiment, one end of the second plate body 22 connected to the third plate body 23 is provided with a first hinge structure 22a for connection to the expansion connection structure 17; wherein the first hinge structure 22a includes: a monaural joint 22a1 for connection with the monaural joint 172, and a monaural joint 22a2 for connection with the monaural joint 171;

In the present embodiment, the end of the second plate body 22 connected to the first plate body 21 is provided with a plurality of second hinge structures 22b for connecting to the longitudinal connecting structures 121 of the grill assembly 12, and a plurality of wire rope connectors 22c. The plurality of cable connectors 22c are disposed at intervals in the width direction of the end bridge module 2, and the plurality of second hinge structures 22b are disposed in series between the cable connectors 22c.

In the present embodiment, in a state that the second limiting structure 213 of the end bridge module is connected to the first limiting structure 211, the first plate 21, the second plate 22, and the third plate 23 form a closed triangle structure, and the second plate 22 and the third plate 23 that are hinged to each other are supported on the first plate 21. In this embodiment, the first limiting structure 211 may be a boss, a groove, a through hole, or the like on the first plate 21, and the second limiting structure 213 is disposed against or inserted into the first limiting structure 211. In this embodiment, the bottom of the first plate 21 may be further provided with an anti-slip structure to ensure the stability of contact with the ground.

In this embodiment, when the first plate 21, the second plate 22 and the third plate 23 form a closed triangle structure, the shape of the plate support 24 is consistent with the internal shape of the triangle structure enclosed by the plates, so as to achieve the effect similar to that of the first plate 21, the second plate 22 and the third plate 23 respectively contact and play a role of rib plates, so as to stably support the second plate 22 and the third plate 23, thereby achieving the stability, reliability and high bearing capacity of the whole end bridge module.

As shown in connection with fig. 4, 5, 6, 7, 8, 18, according to one embodiment of the present invention, opposite ends of the wire rope 3 are connected to wire rope connectors 22c of the end bridge module 2; when the steel rope 3 is connected with the end bridge joint module 2, the bridge rut units are arched upwards (see fig. 8); when the wire rope 3 is separated from the end bridge module 2, the bridge rut unit is straight (see fig. 9). When the bridge track unit is in a straight shape, the buoyancy of the air bags is mainly utilized as a river floating bridge, so that the application range of the track unit provided by the invention is further expanded into a waterway dual-purpose bridge, and the use function of the bridge track unit is further increased.

According to the invention, the bridge track units are in an arch shape, and the end bridge joint modules are connected by arranging the bottom tensioning steel ropes, so that the overall rigidity of the arch bridge track units is increased, the airbag supporting arch Zhang Xianqiao formed by the bridge track units can be used as a cross-ditch bridge with two ends being supported, heavier loads (such as vehicles and the like) can be borne, meanwhile, the influence of protruding ground objects on bridge erection and use in the span range of the bridge can be effectively avoided, the bridge track units can adapt to more complex gully terrains, and the environmental adaptability of the bridge track units is improved.

According to one embodiment of the invention, a plurality of bridge rut units according to the invention can be combined with one another laterally side by side. In this embodiment, a plurality of bridge rut units arranged side by side are connected to each other by using a transverse connection rod, and are fixedly connected to trunk sewer land surfaces by using a connection member such as a wire rope.

The bridge rut units of the present invention may be arranged in a plurality of lateral directions in an up arch shape (see fig. 1) or may be arranged in a plurality of lateral directions in a flat shape (see fig. 2 and 3).

In the embodiment, the connection between the bottom pull rod assembly C and the panel assembly A is realized by adopting the transverse fixed steel cable D, and when the bridge track unit is in a straight shape, the transverse fixed steel cable binds the bridge span panel and the bottom pull rod assembly on an inflatable airbag with certain pressure, so that the bridge span panel and the bottom pull rod assembly form a whole, thereby being beneficial to increasing the integral rigidity of the bridge track unit and the capacity of resisting deformation instability; when the bridge track unit is in an upper arch shape, the transverse fixed steel rope not only binds the bridge span panel, the air bag and the bottom pull rod assembly into a whole, but also plays a role in transferring the force between the bridge span panel and the bottom pull rod assembly.

According to the invention, the bridge track units can be used independently for guaranteeing personnel to pass, and two or more bridge track units can be connected together transversely by utilizing the transverse connectors of the bridge track units, so that the bridge deck width of the bridge is widened, the passing of small vehicles can be guaranteed, the overall torsional rigidity of the bridge and the buoyancy of the bridge are increased, and the bearing capacity of the bridge is increased.

To further illustrate the invention, the process of installing and using the invention will be further described.

Determining the number of the required middle bridge modules 1 according to the width required to be spanned;

Firstly, unfolding a folded middle bridge section module, and connecting two bridge span panels in the same module by utilizing a first locking connection structure on the bridge span panel module, wherein the specific connection is that an upper connecting plate 151 and a corresponding upper connecting hole 152 are connected together by utilizing a connecting piece;

Adjacent middle bridge section modules are hinged through an expansion connection structure 17 arranged on the end face of one end of the bridge span panel 11; in the concrete connection, the extension connection structure 17 at one side of the adjacent bridge span panel is coaxially connected by adopting a pin shaft, and meanwhile, the longitudinal connection structure 121 of the second pressure bearing piece 16 and the grid assembly 12 is correspondingly adjusted, and the longitudinal connection structures 121 of the bottom pull rod assemblies among different modules are hinged together by utilizing the pin shaft;

then the second locking connection structure 19 is adopted for connection locking;

Connecting the middle bridge modules at two ends of the bridge track unit with the end bridge section modules, and connecting the longitudinal pull rod 12b of the bottom pull rod assembly with the end bridge section modules through pin shafts;

Inflating the air bags in all the middle bridge joint modules, and enabling the air bags to reach a specified overpressure state, so that the bridge track units are arranged;

repeating the steps, splicing other bridge track units, and erecting the spliced bridge track units on trunk sewer or in a river;

And connecting the plurality of track units through transverse connecting rods, and fixing the bridge through the oblique steel ropes to finish the erection of the whole bridge.

The foregoing is merely exemplary of embodiments of the invention and, as regards devices and arrangements not explicitly described in this disclosure, it should be understood that this can be done by general purpose devices and methods known in the art.

The above description is only one embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A modular gas strut rut bridge comprising: a plurality of bridge rut units arranged in parallel;

the bridge track unit comprises a plurality of middle bridge section modules (1) and two end bridge section modules (2), and a steel cable (3) which is detachable from the end bridge section modules (2);

the plurality of middle bridge section modules (1) are arranged between the two end bridge section modules (2);

When the steel cable (3) is connected with the end bridge joint module (2), the bridge track unit is in an upper arch shape;

when the steel cable (3) is separated from the end bridge joint module (2), the bridge rut unit is in a straight shape;

When the bridge track units are in an upper arch shape, a plurality of connected middle bridge joint modules (1) are in inclined butt joint at a certain angle;

when the bridge track units are straight, a plurality of connected middle bridge joint modules (1) are arranged in a flush butt joint manner;

the middle bridge module (1) comprises: a panel assembly (A), an inflatable and deflatable air bag (B), a bottom pull rod assembly (C) and a transverse fixed steel cable (D);

The panel assembly (A) is connected with the bottom pull rod assembly (C) through the transverse fixed steel cable (D) and is positioned above the bottom pull rod assembly (C);

the air bag (B) is arranged between the panel assembly (A) and the bottom pull rod assembly (C);

The panel assembly (a) includes: two movably connected bridge decks (11);

the bottom drawbar assembly (C) comprises: two movably connected grid assemblies (12);

One end of the adjacent grating component (12) is hinged, and the other end of the grating component (12) far away from the hinged end is provided with a telescopic longitudinal connecting structure (121);

adjacent bridge span panels (11) are connected by adopting long panel connecting pieces (13) along the length direction of the middle bridge section module (1);

Opposite ends of the panel connecting piece (13) are respectively hinged with the end parts of the bridge span panel (11);

Along the length direction of the middle bridge section module (1), a first pressure bearing piece (14) is arranged on the end face of one end, connected with the panel connecting piece (13), of the bridge span panel (11), and a first locking connecting structure (15) is arranged at the side edge position of the upper surface of one end, connected with the panel connecting piece (13), of the bridge span panel (11) so as to realize upper connection of the adjacent bridge span panel (11) after being unfolded;

Along the length direction of the middle bridge section module (1), a second pressure bearing piece (16) is arranged on the end face of one end, far away from the panel connecting piece (13), of the bridge span panel (11), an inclination angle adjusting seat (18) for adjusting the inclination angle of the second pressure bearing piece (16), an expansion connecting structure (17) and a second locking connecting structure (19) with adjustable connecting distance are arranged on the side edge position of the upper surface of one end, far away from the panel connecting piece (13), of the bridge span panel (11);

the expansion connection structure (17) comprises: a monaural joint (171) and a binaural joint (172);

The single-lug connector (171) and the double-lug connector (172) are arranged at intervals, and the second pressure-bearing piece (16) is positioned between the single-lug connector (171) and the double-lug connector (172);

the end bridge module (2) comprises: a first plate body (21), a second plate body (22), a third plate body (23) and an inner support plate body (24);

Opposite ends of the second plate body (22) are respectively hinged with the first plate body (21) and the third plate body (23);

one end of the first plate body (21) far away from the second plate body (22) is provided with a first limiting structure (211);

A second limiting structure (213) is arranged at one end of the third plate body (23) far away from the second plate body (22);

The second limiting structure (213) is detachably connected with the first limiting structure (211);

A third locking connection structure (231) used for being connected with the second locking connection structure (19) is arranged at one end of the third plate body (23) adjacent to the second plate body (22);

The third locking connection (231) comprises: a locking buckle (231 a) and a locking buckle seat (231 b);

The locking buckle ring (231 a) and the locking buckle ring seat (231 b) are arranged at intervals at the side edge position of the upper surface of the end part of the third plate body (23) along the width direction of the end bridge joint module (2);

One end of the second plate body (22) connected with the third plate body (23) is provided with a first hinge structure (22 a) used for being connected with the expansion connection structure (17);

the first hinge structure (22 a) includes: a monaural joint (22 a 1) for connection with the monaural joint (172), a monaural joint (22 a 2) for connection with the monaural joint (171);

one end of the second plate body (22) connected with the first plate body (21) is provided with a plurality of second hinge structures (22 b) used for being connected with a longitudinal connecting structure (121) of the grid assembly (12), and a plurality of steel rope connecting pieces (22 c);

The plurality of steel cable connecting pieces (22 c) are arranged at intervals along the width direction of the end bridge joint module (2), and the plurality of second hinge structures (22 b) are sequentially arranged among the steel cable connecting pieces (22 c);

Opposite ends of the steel cable (3) are connected with a steel cable connecting piece (22 c) of the end bridge section module (2);

the longitudinal connecting structure (121) comprises: a longitudinal connecting end (1211), a position adjusting end (1212) connected to the longitudinal connecting end (1211);

The position adjusting end (1212) is in sliding connection with a longitudinal pull rod (12 b) of the bottom pull rod assembly (C);

the longitudinal connecting end (1211) is formed by a plurality of plate-shaped bodies arranged at intervals, and coaxial through holes are arranged on each plate-shaped body.

2. The modular gas strut rut bridge of claim 1, wherein said panel assembly (a) and bottom drawbar assembly (C) are collapsible.

3. Modular gas stay rut bridge according to claim 2, characterized in that said first locking connection (15) comprises: an upper connection plate body (151) and an upper connection hole (152);

Along the length direction of the middle bridge section module (1), one end of the upper connecting plate body (151) far away from the bridge span panel (11) is provided with a through hole (1511) penetrating through the body of the upper connecting plate body;

along the width direction of the middle bridge section module (1), the upper connecting plate body (151) and the upper connecting holes (152) are arranged at intervals at the side edge positions of the bridge span panel (11).

4. A modular gas strut rut bridge according to claim 3, characterized in that said second locking connection (19) comprises: a clasp (191) and a plurality of clasp bases (192);

a plurality of buckle seats (192) are arranged at intervals along the length direction of the middle bridge section module (1);

Along the width direction of the middle bridge section module (1), the retaining ring (191) and the retaining ring seat (192) are arranged at intervals at the side edge position of the upper surface of the end part of the bridge span panel (11).

5. Modular gas stay rut bridge according to claim 4, characterized in that said bridge deck (11) is a flat box-type body comprising: a panel plate (111), a plate support (112);

The plate body support (112) is a frame structure which is matched with the shape of the panel plate body (111);

the panel plate body (111) is arranged at one side of the plate body support (112) or respectively arranged at two opposite sides of the plate body support (112);

the grille assembly (12) comprises: a transverse pull rod (12 a) and a longitudinal pull rod (12 b);

The transverse pull rods (12 a) and the longitudinal pull rods (12 b) are vertically connected in a staggered manner;

The adjacent grid components (12) are hinged through a joint arranged at one end of the longitudinal pull rod (12 b), and the longitudinal connecting structure (121) is arranged at the other end of the longitudinal pull rod (12 b);

one end of the transverse fixed steel cable (D) is connected with the end part of the transverse pull rod (12 a), and the other end of the transverse fixed steel cable is connected with the bridge span panel (11).