CN115387198A

CN115387198A - Light composite material pedestrian bridge convenient for manpower rapid deployment and use method thereof

Info

Publication number: CN115387198A
Application number: CN202211217769.XA
Authority: CN
Inventors: 张冬冬; 吕晨曦; 高一峰; 莫昌金
Original assignee: Army Engineering University of PLA
Current assignee: Army Engineering University of PLA
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2022-11-25

Abstract

The invention provides a light composite material pedestrian bridge convenient for manpower rapid deployment and a use method thereof. The composite material pedestrian bridge comprises two telescopic main beam assemblies and two plate cables; the two telescopic girder assemblies are connected through a plurality of transverse connecting rods, the plate cables are anchored at two ends of the telescopic girder assemblies, a plurality of vertical supporting rods are arranged between the telescopic girder assemblies and the plate cables, and flexible composite material bridge decks are arranged in the areas surrounded by the transverse connecting rods and the telescopic girder assemblies. The vertical stay bars and the plate cables are arranged below the telescopic main beam assembly to form a novel composite beam string structure integrating telescopic configuration and segmental assembling type configuration, and the novel composite beam string structure has the characteristics of simple structural form, capability of realizing large span, suitability for manual carrying, easiness in rapid assembling and erecting, convenience in manual rapid deployment and the like.

Description

Light composite material pedestrian bridge convenient for manpower rapid deployment and use method thereof

Technical Field

The invention belongs to the technical field of emergency bridge structures and composite material structures, and particularly relates to a light composite material walking bridge convenient for manual rapid deployment and a using method thereof.

Background

The pedestrian bridge is mainly used for bridging mountainous rivers, dry ditches, deep valleys and rain-cracked areas, so that pedestrian or squads can quickly overcome valley obstacles, and the pedestrian bridge plays a key role in performing diversified emergency rescue operations, particularly in highland and mountainous areas.

The bridge has the characteristics of simple structure, light weight, convenient manual carrying, high erection speed, less required operating personnel and the like. At present, the pedestrian bridge at home and abroad is divided into a modular type and a detachable type, wherein the weight of a single module of the modular type structure is large, the pedestrian bridge is inconvenient to carry by manpower, while the detachable type structure is suitable for carrying by manpower, but the detachable type structure has the defects of complex structure, more assembled components, high operation strength, large weight of a maximum load component, more carrying and operating personnel, difficulty in carrying by a single person, low assembling and erecting efficiency and the like, and the two types of the detachable type structure are not suitable for use requirements under complicated terrains with multiple mountains in plateau. Meanwhile, the existing pedestrian bridge is basically designed and prepared from aluminum alloy and steel materials, and has the defects of large overall structure, heavy weight of a single part and the like. The patent laid-open earlier proposes a portable composite material pedestrian bridge (application number: CN 201711079256), but also has the defects of small structural rigidity, limited bearing capacity, heavy maximum load member, large carrying module volume and the like, and cannot meet the requirements of large structural span and convenient manpower rapid deployment.

Therefore, it is urgently needed to develop a universal pedestrian bridge which can be fused with modular and detachable configurations, has a light overall structure and a single component, has high structural rigidity, can meet the requirement of large span, is suitable for being conveniently carried by manpower, and is easy to assemble, erect and deploy by manpower quickly.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a light composite material pedestrian bridge convenient for manual rapid deployment and a using method thereof.

In order to achieve the purpose, the invention is realized by adopting the following technical scheme:

the invention provides a light composite material pedestrian bridge convenient for manpower rapid deployment, which comprises two telescopic main beam assemblies and two plate cables;

connect through a plurality of transverse connecting rod that sets up between two flexible girder subassemblies, board cable anchor sets up a plurality of vertical vaulting pole in flexible girder subassembly both ends between flexible girder subassembly and the board cable, sets up flexible composite material bridge panel in the region that transverse connecting rod and flexible girder subassembly surround.

Furthermore, the number and the spacing of the vertical support rods can be changed;

the plate cable is a carbon fiber reinforced composite plate cable; the sleeve is made of fiber reinforced composite materials, and the bridge deck is made of flexible composite materials.

Furthermore, the telescopic main beam assembly comprises two end circular tubes arranged at two ends and a plurality of telescopic beam assemblies connected with the end circular tubes;

a threaded outer sleeve is arranged between the telescopic beam assemblies and is used as a connecting node, and a threaded outer sleeve is also arranged between the telescopic beam assemblies and the end part circular tube and is used as a connecting node;

the telescopic girder assembly is characterized in that the threaded outer sleeves extend outwards for a certain length, the extension area is in a step shape and is provided with threads, the step configurations and the threads of the two threaded outer sleeves at the connecting node are matched with each other, and the two threaded outer sleeves are connected in a staggered mode in a threaded connection mode, so that the telescopic girder assembly or the telescopic girder assembly and the end circular pipe are connected into a whole to form the telescopic girder assembly.

Furthermore, the telescopic beam assembly is formed by nesting a plurality of coaxial sleeves with gradually changing diameters layer by layer, and pretightening force joints are arranged at the end parts of the sleeves;

the two ends of the pretightening force joint are connected with an inner sleeve and an outer sleeve, the inner sleeve of the large-diameter sleeve and the outer sleeve of the small-diameter sleeve at the joint part are in equal-wall-thickness buckles and conical embedded configurations when the telescopic beam assembly is in an unfolded tensioned state, the outer sleeve of the small-diameter sleeve is limited by the inner sleeve of the large-diameter sleeve, and the telescopic beam assembly can be stretched, born and retracted for carrying.

Furthermore, the outer sleeve and the inner sleeve of the pre-tightening force joint are welded and connected into a whole through the cover plate, so that the cooperative bearing force of the inner metal sleeve and the outer metal sleeve of the pre-tightening force joint is realized, and the bearing capacity of the joint of the large-diameter sleeve and the small-diameter sleeve in the unfolded state of the main beam assembly is improved.

Furthermore, vertical gusset plates are arranged at two ends of the transverse connecting rod or the vertical stay bar, and the telescopic girder assembly is connected with the transverse connecting rod and the vertical stay bar through the vertical gusset plates in a welding or bolt connection mode.

Furthermore, the bridge deck plate adopts the flexible carbon cloth of weaving, makes the organ formula with carbon cloth in advance, pastes the bridge deck plate four corners through gluing the connection on the outer sleeve of expansion beam subassembly for the bridge deck plate is around two sleeve pipes a week, the local thickening of bridge deck plate tip to adapt to the demand of sleeve pipe variable cross section, guarantee the sheathed tube bridge deck plate level of diameter difference.

Further, an end transverse connecting rod is arranged between the end circular tubes;

the two ends of the end transverse connecting rod are respectively provided with a single lug joint, the end surface of the end circular tube at the joint of the end transverse connecting rod and the end transverse connecting rod is provided with a double lug joint, and a rivet matched with the single double lug joint in hole diameter penetrates through the pin hole to fix the end transverse connecting rod and the end circular tube, so that the bridge is prevented from generating integral displacement under the action of repeated pedestrian load impact.

Further, the plate cable is connected with the telescopic main beam assembly through an inclined gusset plate arranged on the outer sleeve; the oblique gusset plate is provided with two end steel plates for clamping the plate cable in the middle, the end of the end steel plate clamp is connected with the oblique gusset plate through a single lug and a double lug, and the plate cable is clamped by the end steel plate clamps through bolt connection;

and a vertical stay bar double-lug joint is arranged below the vertical stay bar at the joint of the plate cable, the vertical stay bar double-lug joint is connected with a vertical stay bar steel plate clamp welded with a single-lug joint, the vertical stay bar steel plate clamp clamps the plate cable in the middle through bolt connection and is connected with the vertical stay bar through a single double lug, and therefore the connection between the vertical stay bar and the plate cable is realized.

Furthermore, a transverse brace rod is arranged between the two vertical brace rod steel plate clamps, two single lug joints matched with the apertures of the vertical brace rod steel plate clamps are arranged at two ends of the transverse brace rod, and the transverse brace rod is connected with the vertical steel plate clamps in a single-lug mode.

In a second aspect, the invention provides a method for using a light-weight composite material pedestrian bridge convenient for human deployment, based on the light-weight composite material pedestrian bridge of the first aspect, the method comprises the following specific steps:

the assembled telescopic main beam assembly is pulled open and extended on my shore, the bridge deck plate adhered to the outer sleeve is correspondingly opened during stretching, and the telescopic main beam assembly is inverted during assembling;

pushing the assembled composite material pedestrian bridge from our bank to the opposite bank, wherein a polytetrafluoroethylene plate is required to be arranged below the telescopic girder assembly in the pushing process so as to reduce the frictional resistance when the telescopic girder assembly is pushed out;

in order to keep the stability of the beam body during pushing, personnel counterweight needs to be added to the non-cantilever part so as to ensure that the composite material pedestrian bridge is horizontally and stably pushed out;

after the landing is achieved, the composite material pedestrian bridge is manually turned over, so that the vertical stay bars and the plate cables are downward and positioned below the telescopic main beam assembly; and then fixing the composite material pedestrian bridge.

Compared with the prior art, the invention has the following beneficial effects:

1. the vertical stay bars and the plate cables are arranged below the telescopic main beam assembly to form a novel composite material beam string structure integrating telescopic configuration and segmental assembling configuration, and the novel composite material beam string structure has the characteristics of simple structure form, small self weight, large bearing capacity, large span and the like, and can control the change of internal force of the telescopic main beam assembly along the span direction by adjusting the prestress of the plate cables and the number and the intervals of the vertical stay bars, so that the stress of each section is uniform, and the strength of the member can be fully utilized; meanwhile, the telescopic main beam assembly with compression resistance and bending resistance and the plate cables form a self-balanced stress system, a force transmission path is clear, the structural rigidity is high, the stability is good, and a ground anchoring facility is not required to be additionally arranged;

2. the telescopic main beam assembly is formed by connecting a plurality of telescopic beam assemblies, each telescopic beam assembly is formed by mutually sleeving and connecting a plurality of coaxial fiber reinforced composite material sleeves, the pipe diameter of each sleeve is gradually changed according to stress, the self weight of the structure is reduced, and the stress of the structure is reasonable; the contracted telescopic beam assembly has small volume, convenient carrying and easy extension; the telescopic beam components are connected in a threaded manner, so that the assembling speed is increased, the disassembly is convenient, and the interchangeability is good;

3. the sleeve pipe adopts the fiber reinforced composite material, fully utilizes the characteristics of light weight, high strength and easy assembly, further lightens the dead weight of the whole structure and a single component while meeting the bearing capacity, is convenient for manual carrying and assembly of components, is easy for quick erection and withdrawal of a bridge, and improves the carrying and operating efficiency of the bridge;

4. the invention adopts a modularized and detachable fusion design configuration, can adopt a plurality of telescopic beam components to realize different spans, increases the application range of the bridge, and has strong site applicability; the invention has the advantages of simple structure, small overall structure weight, light single part, small quantity and types of assembly components, convenient manual transportation and assembly, less required operators, low labor intensity, convenient erection and retraction and strong applicability to plateau mountain environments.

Drawings

FIG. 1 is a general layout;

FIG. 2 is a side view of a single strut configuration;

FIG. 3 is a top view of a single strut configuration;

FIG. 4 is a side view of a dual strut structure;

FIG. 5 is a top view;

FIG. 6 is a telescoping beam assembly;

FIG. 7 is a cross-sectional view of the telescoping beam assembly;

FIG. 8 is a view of a connection node between telescoping beam assemblies;

FIG. 9 is a connection node of the equal wall thickness buckle type telescopic pipe;

FIG. 10 is a tapered embedded telescopic tube connection node;

FIG. 11 is a view of an integrated equal wall thickness buckle type telescopic tube connection node;

FIG. 12 is a woven composite flexible deck slab;

FIG. 13 is a telescopic main beam assembly and plate cable connection node;

FIG. 14 shows a vertical stay and stay connection node;

FIG. 15 is a carbon fiber tendon rigid deck slab;

FIG. 16 is a vertical strut to rigid rod connection node;

FIG. 17 is a schematic view of the cantilever racking process;

FIG. 18 is a schematic view of a rotational mounting process;

in the figure: 1. a telescoping main beam assembly; 11. a telescoping beam assembly; 111. a sleeve; 112. a threaded outer sleeve; 113. a thread; 114. pre-tightening the metal joint; 1141. an outer sleeve; 1142. an inner sleeve; 115. an outer sleeve of a small-diameter cannula; 116. a cover plate; 2. a plate cable; 21. an oblique gusset plate; 22. an end steel plate clamp; 23. a gusset plate I; 24. a second gusset plate; 25. single and double ears; 3. a transverse connecting rod; 31. a vertical gusset plate; 4. a vertical stay bar; 42. the vertical stay bar double-lug joint; 43. a vertical stay bar steel plate clamp; 5. a bridge deck; 51. a carbon fiber rib bridge deck; 6. an end circular tube; 61. a double-lug joint; 7. an end transverse link; 71. a single lug joint; 8. riveting; 9. a transverse strut; 10. a polytetrafluoroethylene sheet.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientations or positional relationships thereof are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present embodiment and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as being limited to the present embodiment.

The first embodiment is as follows:

as shown in fig. 1 to 14, the present embodiment provides a light-weight composite material pedestrian bridge convenient for rapid manual deployment, which comprises two telescopic main beam assemblies 1 and two carbon fiber plate cables 2. The two telescopic girder assemblies 1 are connected through a plurality of transverse connecting rods 3, the carbon fiber plate cables 2 are anchored at two ends of the telescopic girder assemblies 1, a plurality of vertical supporting rods 4 are arranged between the telescopic girder assemblies 1 and the carbon fiber plate cables 2, and bridge decks 5 are arranged in the areas surrounded by the transverse connecting rods 3 and the telescopic girder assemblies 1.

Specifically, according to the difference of span, the structural form and the stress state can be changed by changing the number and the interval of the vertical support rods 4, so as to reduce the structural weight, and fig. 4 is a side view of the structure when two vertical support rods 4 are adopted.

Specifically, vertical gusset plates 31 are arranged at two ends of the transverse connecting rod 3 or the vertical supporting rod 4, and the telescopic main beam assembly 1 is connected with the transverse connecting rod 3 and the vertical supporting rod 4 in a welding mode through the vertical gusset plates 31.

Specifically, the telescopic girder assembly 1 is formed by connecting two end circular tubes 6 arranged at two ends with a plurality of telescopic girder assemblies 11, a thread outer sleeve 112 at a connection node between the telescopic girder assemblies 11 extends outwards for a certain length, an extending area is in a step shape and is provided with threads 113, the step configurations of the two thread outer sleeves 112 at the connection node and the threads 113 are matched with each other, the two thread outer sleeves 112 are connected in a staggered mode through the threaded connection mode, the telescopic girder assemblies 11 and the connection node of the end circular tube 6 also adopt the same connection mode, so that the telescopic girder assemblies 11 and the end circular tube 6 are connected into a whole, and the telescopic girder assembly 1 is formed. The telescopic beam assembly 11 is formed by nesting a plurality of coaxial sleeves 111 with gradually changed diameters layer by layer, the sleeves 111 are made of fiber reinforced composite materials, and the end parts of the sleeves are pre-tightening metal joints 114.

Specifically, the pretension joints 114 at both ends are provided with an outer sleeve 1141 and an inner sleeve 1142, and when the telescopic beam assembly 11 is in the extreme expansion state, the inner sleeve 1142 of the large-diameter casing is in contact with the outer sleeve 115 of the small-diameter casing. When the contact part adopts the equal wall thickness buckle structure, the limit of the large-diameter sleeve to the small-diameter sleeve can be realized when the telescopic beam component 11 is in the unfolding state because the outer diameter of the outer sleeve 115 of the small-diameter sleeve is the same as the outer diameter of the inner sleeve 1142 of the large-diameter sleeve. When the conical embedded configuration is adopted, the outer sleeve 115 of the small-diameter sleeve is embedded in the inner sleeve 1142 of the large-diameter sleeve, so that the large-diameter sleeve can limit the small-diameter sleeve when the telescopic beam assembly 11 is in the unfolded state. Fig. 7 shows the telescopic beam assembly 11 in a stretched, expanded state and a collapsed, retracted state, respectively.

Specifically, the outer sleeve 1141 and the inner sleeve 1142 of the pre-tightening force joint are welded and connected into a whole by the cover plate 116, so that the outer sleeve 1141 and the inner sleeve 1142 of the pre-tightening force joint cooperatively bear force, and the bearing capacity of the joint of the large-diameter sleeve and the small-diameter sleeve at the expansion state of the telescopic beam assembly 11 is improved.

Specifically, the two ends of the end transverse connecting rod 7 connected with the end circular tube 6 at the two ends of the bridge structure are provided with a single lug connector 71 in a mode of welding through an initial thread, the end circular tube 6 end face of the joint of the end transverse connecting rod 7 is provided with a double lug connector 61 in a mode of welding through an initial thread, one rivet 8 matched with the aperture of the single double lug connector penetrates through the pin hole, the end transverse connecting rod 7 and the end circular tube 6 are fixed, and the pedestrian bridge is prevented from generating integral displacement under the repeated impact action of pedestrian load.

Specifically, an outer sleeve at the joint of the carbon fiber plate cable 2 and the telescopic main beam assembly 1 is provided with an oblique gusset plate 21, the carbon fiber plate cable 2 is clamped in the middle by two end steel plate clamps 22, the ends of the end steel plate clamps 22 are connected with the oblique gusset plate 21 through single and double lugs, and the carbon fiber plate cable 2 is clamped by the end steel plate clamps 22 through bolt connection. A vertical stay bar double-lug connector 42 is arranged below the vertical stay bar 4 at the joint of the carbon fiber plate cable 2 in a mode of screwing and welding, the vertical stay bar steel plate clamp 43 welded with a single-lug connector clamps the carbon fiber plate cable 2 in the middle through bolt connection, and is connected with the vertical stay bar 4 through single and double lugs, so that the connection of the vertical stay bar 4 and the carbon fiber plate cable 2 is realized. A transverse supporting rod 9 is arranged between the two vertical supporting rod steel plate clamps 43, two ends of the transverse supporting rod 9 are provided with two single lug joints matched with the apertures of the vertical supporting rod steel plate clamps 43 in a mode of screwing first and then welding, and the transverse supporting rod 9 is connected with the vertical steel plate clamps 43 through the single lug joints.

Specifically, 5 bridge deck boards adopt flexible weaving carbon cloth, make organ formula with carbon cloth in advance, paste 5 four corners of bridge deck boards on telescopic outer sleeve 1141 of flexible roof beam subassembly 11 through gluing the connection for 5 bridge deck boards are around two sleeve pipes a week, and 5 tip local thickening of bridge deck boards to adapt to the demand of sleeve pipe variable cross section, guarantee the 5 levels of sheathed tube bridge deck boards that the diameter is different.

In some embodiments, the telescopic beam assembly 11 may be formed by nesting a plurality of sleeves 111 with gradually changing pipe diameters, and the sleeves with the same cross section are connected with each other by the telescopic beam assembly 11 and are integrally formed by a threaded connection. Besides, two adjacent equal-section sleeves can be integrally formed in a flange connection mode.

In some embodiments, the bridge deck 5 may be formed by folding several grid-like carbon fiber reinforced bridge decks 51 arranged side by side, as shown in fig. 15, in addition to the above-described form. The adjacent carbon fiber rib bridge decks 51 are hinged with each other, and the two carbon fiber rib bridge decks 51 at the end parts are connected with the cross bars at the end parts in a clamping groove mode. When the bridge deck with the form is carried, the carbon fiber rib bridge deck 51 can be folded in a plane, and the bridge deck is convenient to carry and unfold.

In some embodiments, the carbon fiber plate cable 2 may also be a rigid rod, which includes a fiber reinforced composite material pipe, a rod and a rib, and the reinforcing fibers in the fiber reinforced composite material may also be glass fibers, basalt fibers, hybrid fibers, and the like. When the rigid rods are adopted, the connection between the adjacent rigid rods and the vertical supporting rods and the horizontal supporting rods is shown in fig. 16, the rigid rods and the vertical supporting rods 4 both adopt a pre-tightening force joint mode, and the outer sleeves and the inner sleeves are arranged at the two ends of the rigid rods. The adjacent first rigid rod 21 and the second rigid rod 22 are connected in a welding mode through a first node plate 23, the second rigid rod 22 and the vertical stay bar 4 are connected in a welding mode through a second node plate 24, and the second rigid rod 22 and the transverse stay bar 9 are connected through a single double lug 25 welded on the outer sleeve.

Further, the carbon fiber plate cable 2 may also be a flexible cable, which includes, but is not limited to, aramid fiber rope, high density polyethylene cable, and steel wire rope. When the flexible cable is adopted, the flexible cable is connected with the vertical stay bar and the transverse stay bar through a binding method.

The second embodiment:

based on the light-weight composite material pedestrian bridge described in the first embodiment, this embodiment provides a method for using a light-weight composite material pedestrian bridge convenient for human deployment, as shown in fig. 17, the light-weight composite material pedestrian bridge is assembled according to the sequence from (a) to (f), and the specific steps are as follows:

the method comprises the following steps: a plurality of telescopic beam assemblies 11 which are connected by threads are firstly assembled together at our bank, and then the telescopic beam assemblies 11 and the end part round tubes 4 at two ends are assembled to form a telescopic main beam assembly 1, then the assembled telescopic main beam assembly 1 is pulled open to extend, during stretching, a bridge deck 5 pasted on an outer sleeve is correspondingly opened, and during assembling, the telescopic main beam assembly 1 is inverted, so that one side with an oblique gusset plate 21 is upward.

Step two: two ends of the carbon fiber plate cable 2 are anchored at two ends of the telescopic main beam assembly 11, the carbon fiber plate cable 2 is clamped in the middle by an end steel plate clamp 22, and then the end steel plate clamp 22 is connected with the inclined gusset plate 21 at the end.

Step three: the vertical stay bar steel plate clamp 43 is connected with the vertical stay bar 4, then the carbon fiber plate cable 2 is clamped between the two vertical stay bar steel plate clamps 43, the pin holes of the single lug joints at the two ends of the transverse stay bar 9 are aligned with the pin holes of the vertical stay bar steel plate clamp 43, and the transverse stay bar 9 and the carbon fiber plate cable 2 are fixed by pins, so that the vertical stay bar 4, the carbon fiber plate cable 2 and the transverse stay bar 9 are connected with each other.

Step four: the assembled composite material pedestrian bridge is pushed out from the shore to the opposite shore, and in the pushing-out process, a polytetrafluoroethylene plate 10 needs to be arranged below the telescopic beam assembly so as to reduce the frictional resistance when the telescopic beam assembly is pushed out. In addition, in order to keep the stability of the beam body during pushing, a personnel counterweight needs to be added to the non-cantilever part so as to ensure that the composite material pedestrian bridge is horizontally and stably pushed out.

Step five: after reaching the opposite bank, adopt artifical mode with the upset of combined material pedestrian bridge for vertical vaulting pole 4 and carbon fiber plate cable are down, are located the below of flexible girder subassembly 1. Then, the single lug joints 71 at the two ends of the end transverse connecting rod 7 are aligned with the pin holes of the double lug joints 61 of the end round pipe 6, and then the rivet 8 penetrates through the pin holes to be fixed in the soil, so that the end transverse connecting rod 7 and the end round pipe 6 are fixed.

Example three:

the third embodiment provides a second method for using a light-weight composite material pedestrian bridge convenient for manual deployment, and as shown in fig. 18, the only difference between the third embodiment and the second embodiment is that: replacing the step four with: after the whole composite material pedestrian bridge is assembled along the bank of a river, the bridge is rotated to enable the axis of the bridge to be perpendicular to the bank of the river and cross obstacles. In the rotating process, the polytetrafluoroethylene plate 10 is required to be arranged at the rotating axis to reduce the frictional resistance, and meanwhile, the stability and the safety of the bridge in the rotating process are required to be ensured.

The effect of the above-mentioned setting does: for special geographic positions and complex terrain conditions, such as severe terrain conditions of high mountain canyon river deep water emergency and the like, because the bridge erection site of the shore is very narrow, when the cantilever push-out method in the second embodiment is adopted for bridge erection and assembly, it is difficult to assemble a bridge with a larger span into a full bridge and push out a cantilever in the narrow erection site in the direction vertical to the shore, under the condition, the full bridge assembly and unfolding can be carried out in the region parallel to the shore or on the approach road, and then the construction of the bridge can be quickly completed through the rotating frame in the second embodiment.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the invention, "plurality" means two or more unless explicitly specifically defined otherwise.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. The first feature being "under," "beneath," and "under" the second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In the description herein, reference to the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that those skilled in the art may make variations, modifications, substitutions and alterations within the scope of the present invention without departing from the spirit and scope of the present invention.

Claims

1. A light composite material pedestrian bridge convenient for manual deployment and a using method thereof comprise two telescopic main beam assemblies (1) and two plate cables (2); the method is characterized in that: connect through a plurality of transverse connecting rod (3) that set up between two flexible girder subassemblies (1), board cable (2) anchor sets up vertical vaulting pole (4) of a plurality of between flexible girder subassembly (1) and board cable (2) in flexible girder subassembly (1) both ends, and transverse connecting rod (3) set up decking (5) with the regional of flexible girder subassembly (1) encirclement.

2. The light weight composite material pedestrian bridge and the method of using the same, which facilitate human deployment, according to claim 1, characterized in that: the number and the spacing of the vertical support rods (4) are variable;

the plate cable (2) is a carbon fiber reinforced composite plate cable;

the bridge deck (5) is a flexible composite material bridge deck.

3. The light weight composite pedestrian bridge facilitating human deployment and method of use thereof of claim 1, wherein: the telescopic main beam assembly (1) comprises two end circular tubes (6) arranged at two ends and a plurality of telescopic beam assemblies (11) connected with each other;

a threaded outer sleeve (112) is arranged between the telescopic beam assemblies (11) to serve as a connecting node, and a threaded outer sleeve (112) is also arranged between the telescopic beam assemblies (11) and the end circular tube (6) to serve as a connecting node;

the telescopic girder assembly is characterized in that the threaded outer sleeves (112) extend outwards for a certain length, the extension areas are in a step shape and are provided with threads (113), the step configurations of the two threaded outer sleeves (112) at the connection nodes are matched with the threads (113), and the two threaded outer sleeves (112) are connected in a staggered mode in a threaded connection mode, so that the telescopic girder assembly (11) or the telescopic girder assembly (11) and the end circular pipe (6) are connected into a whole to form the telescopic girder assembly (1).

4. The light weight composite pedestrian bridge facilitating human deployment and method of use thereof of claim 3, wherein: the telescopic beam assembly (11) is formed by nesting a plurality of coaxial sleeves (111) with gradually changed diameters layer by layer, the sleeves (111) are made of fiber reinforced composite materials, and pretightening force metal joints (114) are adopted at the end parts of the sleeves;

the pretightening force metal joints (114) are respectively provided with an outer sleeve (1141) and an inner sleeve (1142), and the inner sleeve (1142) of the large-diameter sleeve and the outer sleeve (115) of the small-diameter sleeve are limited by adopting an equal-wall-thickness ring buckling mode or a conical embedding mode.

5. The light weight composite pedestrian bridge facilitating human deployment and method of use thereof of claim 4, wherein: the outer sleeve 1141 and the inner sleeve 1142 of the pre-tightening force joint are welded and connected into a whole by the cover plate 116, so that the outer sleeve 1141 and the inner sleeve 1142 of the pre-tightening force joint cooperatively bear force, and the bearing capacity of the joint of the large-diameter sleeve and the small-diameter sleeve at the joint of the telescopic beam assembly 11 in an expansion state is improved.

6. The light weight composite material pedestrian bridge and the method of using the same, which facilitate human deployment, according to claim 1, characterized in that: horizontal connecting rod (3) or vertical vaulting pole (4) both ends all are equipped with vertical gusset plate (31), are connected with the welded mode through vertical gusset plate (31) between flexible girder subassembly (1) and horizontal connecting rod (3) and vertical vaulting pole (4).

7. The light weight composite pedestrian bridge facilitating human deployment and method of use thereof of claim 1, wherein: the bridge deck plate (5) is woven with carbon fiber cloth, makes the carbon fiber cloth organ formula in advance, pastes bridge deck plate (5) four corners through the gluey connection on telescopic outer sleeve (1141) of telescopic beam subassembly (11) for bridge deck plate (5) is around two sleeve pipes a week, local thickening of bridge deck plate (5) tip to adapt to the demand of sleeve pipe variable cross section, guarantee sheathed tube bridge deck plate (5) level that the diameter is different.

8. The light weight composite material pedestrian bridge and the erection method thereof convenient for human deployment according to claim 1, characterized in that: an end transverse connecting rod (7) is also arranged between the end circular tubes (6);

the two ends of the end transverse connecting rod (7) are provided with a single lug connector (71) in a mode of first threads and then welding, the end face of the end circular tube (6) at the joint of the end transverse connecting rod (7) is provided with a double lug connector (61) in a mode of first threads and then welding, and the end transverse connecting rod (7) and the end circular tube (6) are fixed by penetrating through the pin hole through a rivet (8) matched with the aperture of the single lug connector.

9. The light weight composite material pedestrian bridge and the erection method thereof convenient for human deployment according to claim 1, characterized in that: the plate cable (2) is connected with the telescopic main beam component (1) through an inclined gusset plate (21) arranged on the outer sleeve; the oblique gusset plate (21) is provided with two end steel plate clamps (22) for clamping the plate cable in the middle, the ends of the end steel plate clamps (22) are connected with the oblique gusset plate (21) through single lugs and double lugs, and the end steel plate clamps (22) are connected through bolts to clamp the plate cable (2);

a vertical stay bar double-lug joint (42) is arranged below a vertical stay bar (4) at the joint of the plate cable (2), the vertical stay bar double-lug joint (42) is connected with a vertical stay bar steel plate clamp (43) welded with a single-lug joint, the vertical stay bar steel plate clamp (43) clamps the plate cable (2) in the middle through bolt connection and is connected with the vertical stay bar (4) through single and double lugs, so that the connection between the vertical stay bar (4) and the plate cable (2) is realized;

a transverse supporting rod (9) is arranged between the two vertical supporting rod steel plate clamps (43), two single lug joints matched with the apertures of the vertical supporting rod steel plate clamps (43) are arranged at two ends of the transverse supporting rod (9), and the transverse supporting rod (9) is connected with the vertical steel plate clamps (43) in a single-lug mode.

10. A method of using a light weight composite material pedestrian bridge for facilitating human deployment, the light weight composite material pedestrian bridge according to any one of claims 1 to 9, comprising the steps of:

the method comprises the following steps: pulling the assembled telescopic main beam assembly to extend at our bank, correspondingly stretching the bridge deck plate stuck on the outer sleeve during stretching, and inverting the telescopic main beam assembly during assembling;

step two: pushing the assembled composite material pedestrian bridge from our bank to the opposite bank, wherein a polytetrafluoroethylene plate is required to be arranged below the telescopic girder assembly in the pushing process so as to reduce the frictional resistance when the telescopic girder assembly is pushed out; in order to keep the stability of the beam body during pushing, personnel counterweight needs to be added to the non-cantilever part so as to ensure that the composite material pedestrian bridge is horizontally and stably pushed out;

step three: after the landing is achieved, the composite material pedestrian bridge is manually turned over, so that the vertical stay bars and the plate cables are downward and positioned below the telescopic main beam assembly; then fixing the composite material pedestrian bridge;

alternatively, step two may be replaced with: after the whole composite material walking bridge is assembled along the river bank, the bridge is rotated to enable the axis of the bridge to be vertical to the river bank and cross obstacles;

in the rotating process, a polytetrafluoroethylene plate needs to be arranged at the rotating shaft center to reduce the frictional resistance, and meanwhile, the stability and the safety of the bridge in the rotating process need to be ensured.