CN113818325A

CN113818325A - Aluminum alloy pedestrian bridge

Info

Publication number: CN113818325A
Application number: CN202111285047.3A
Authority: CN
Inventors: 邝海峰; 邓春龙
Original assignee: Guangdong Aluminum Bridge Engineering Co ltd
Current assignee: Guangdong Aluminum Bridge Engineering Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2021-12-21
Anticipated expiration: 2041-11-01
Also published as: CN113818325B

Abstract

The invention relates to an aluminum alloy pedestrian overpass, a bridge body and a ladder corridor, a ladder way straight rod, a ceiling, a decorative grid rod and handrails which are made of aluminum alloy materials, wherein each group of truss body units comprises a plurality of groups of transverse trusses and two side vertical trusses which are parallel and arranged at a certain distance, the two side vertical trusses are perpendicular to the transverse trusses, and meanwhile, a connecting structure of a step tread, a bridge body tread plate, a ladder way longitudinal beam, the decorative grid rod, the bridge body handrail, the ladder way handrail and a water collecting tank which are convenient to install is arranged; the construction method has the advantages of short field construction period, high speed, small installation difficulty, no need of long-time road closure and obstacle setting, good structural corrosion resistance, extremely low maintenance cost, high recovery rate and low recovery treatment cost, and the disassembled aluminum alloy materials are all renewable aluminum alloy materials.

Description

Aluminum alloy pedestrian bridge

Technical Field

The invention relates to the field of overpasses, in particular to an aluminum alloy pedestrian overpass.

Background

The traditional pedestrian bridge is usually built by adopting reinforced concrete or formed by adopting a steel structure through bolt connection or on-site welding, the reinforced concrete parts are heavy in weight, long in construction period and low in plasticity, and the on-site pouring is adopted, so that a large amount of building waste is generated during construction, and the traditional pedestrian bridge is not environment-friendly; the construction period is long, and the road needs to be blocked for a long time, so that traffic along the line is blocked; the structure is heavy, the aesthetic property is poor, and the transportation cost is higher. The steel-structure pedestrian overpass has the defects of easy corrosion, poor durability and high later maintenance cost; the recovery value and the recovery rate are low, the welding operation is not beneficial to environmental protection, and the structure is significant.

At present, aluminum alloy as a new material of a bridge structure is used for urban pedestrian overpass construction and has obvious advantages, the aluminum alloy pedestrian overpass is light and smooth in body shape, all rod pieces can be transported to a site for hoisting construction after being assembled, the standard of an assembly type structure which is pushed vigorously at the present stage is met, the construction period can be greatly shortened, and the adverse effect of urban traffic of construction teams is reduced; the dense oxide film on the surface of the aluminum alloy ensures that the overpass has low maintenance cost, can be recycled and meets the requirements of sustainable development in China.

In view of this, the present designer has designed an aluminum alloy pedestrian bridge.

Disclosure of Invention

The invention aims to solve the problems and the defects, and provides the aluminum alloy pedestrian overpass bridge body structure which is light and environment-friendly, quick and convenient to install, high in bridge body strength and capable of recycling materials.

In order to achieve the purpose, the invention adopts the technical scheme that:

an aluminum alloy pedestrian overpass is characterized in that: comprises a supporting pier, a bridge body structure and a ladder way structure which are made of aluminum alloy materials, a plurality of ladder way straight rods, a ladder way top longitudinal beam arranged at the top of the ladder way straight rods, a ladder way ceiling arranged at the upper part of the ladder way top longitudinal beam, a plurality of decorative grid rods arranged at the two outer sides of the bridge body and the ladder way, a bridge body ceiling, a bridge body handrail and a ladder way handrail which are respectively arranged at the two inner sides of the bridge body and the two inner sides of the ladder way, wherein,

the bridge structure comprises at least two groups of truss body units spliced by connecting plates and bolts, each group of truss body units comprises a plurality of groups of transverse trusses and two side vertical trusses which are parallel and arranged at a certain distance, the two side vertical trusses are perpendicular to the transverse trusses, and the two side vertical trusses respectively comprise an upper chord, a lower chord, a plurality of side long vertical rods and side inclined rods; the upper chord member, the lower chord member, the side long vertical members and the plurality of groups of transverse trusses are connected into truss body units through connecting plates and bolts, and the truss bodies are spliced into truss bodies through the connecting plates and the bolts; the bridge ceiling is arranged on the upper part of the side long vertical rod;

the bridge body structure comprises a bridge body step plate, the outer profile of the cross section of the bridge body step plate is rectangular, a straight spacer rib is arranged in the bridge body step plate, a left groove is arranged at the upper part of the left side of the splicing surface of the bridge body step plate, and a left convex block is arranged at the lower part of the left side of the splicing surface of the bridge body step plate; the upper part of the right side of the splicing surface of the bridge body step plate is provided with a right bump, and the lower part of the right side of the splicing surface of the bridge body step plate is provided with a right groove and a platform plate fixing plate; the left groove is matched with the right bump, the left bump is matched with the right groove, a second bolt avoiding position is arranged at the position, corresponding to the platform board fixing plate, of the left bump, and an anti-skid edge is arranged on the upper surface of the bridge body step board; the bridge body step plate is fixed on the transverse truss through bolts and a platform plate fixing plate in a matching manner;

the ladder way structure comprises two ladder way supports arranged on a support pier, two ladder way longitudinal beams arranged on the upper parts of the two ladder way supports respectively, a ladder way connecting beam for connecting the two ladder way longitudinal beams, a ladder way secondary beam arranged between the two ladder way longitudinal beams, a ladder way platform plate arranged on the upper parts of the ladder way longitudinal beams, a ladder step and a ramp, wherein the upper part and the lower part of the outer side of each ladder way longitudinal beam are provided with elongated bolt dovetail grooves, and a ladder way straight rod is fixed on the ladder way longitudinal beams through the matching of bolts and the bolt dovetail grooves; the outer side of the straight rod of the ladder way is also provided with an upper side rod and a lower side rod, and the decorative grid rod of the ladder way is fixed on the upper side rod and the lower side rod through bolts;

the step steps comprise a plane plate, an inclined plane plate and a straight plate, wherein an upper caulking groove and a step fixing plate which are obliquely opened upwards are arranged at the intersection of the inclined plane plate and the plane plate, a lower caulking groove which is obliquely opened downwards is arranged at the intersection of the inclined plane plate and the straight plate, the step steps are respectively embedded with the previous step and the next step through the upper caulking groove and the lower caulking groove, the step steps are fixed on a longitudinal beam of the stair way in a matched manner through bolts and the step fixing plate, and an anti-skid edge is arranged on the upper surface of the plane plate of the step steps;

the decorative grid rod comprises a plurality of aluminum alloy section bars which are arranged on two sides of the overpass and the bridge body and two sides of the ladder way in parallel and vertically at a certain distance, right-angle grooves are formed in two sides of the decorative grid rod, a lamp groove is formed in the middle of the bottom of each right-angle groove, and an LED lamp strip is installed in each lamp groove.

Furthermore, the bridge body handrail and the stairway handrail comprise an aluminum alloy upper cross beam, an aluminum alloy lower cross beam, a baffle body fixedly arranged on the corresponding inner sides of the aluminum alloy upper cross beam and the aluminum alloy lower cross beam and a handrail arranged on the upper part of the aluminum alloy upper cross beam, wherein two convex blocks are arranged on the upper part of the aluminum alloy upper cross beam, and clamping hooks are arranged on the inner sides of the tail ends of the two convex blocks; the handrail comprises an arc-shaped buckle cover at the upper part and clamping grooves arranged at two sides of the lower part of the arc-shaped buckle cover, wherein a clasp matched with the clamping hook is arranged at one inner side edge of each of the two clamping grooves; the outer sides of the aluminum alloy upper cross beam and the aluminum alloy lower cross beam are provided with strip-shaped dovetail grooves, and the baffle body comprises a glass clamp and toughened laminated glass embedded in a clamping groove of the glass clamp; the aluminum alloy upper cross beam and the aluminum alloy lower cross beam are respectively connected with one end of the Z-shaped connecting piece through the matching of the bolt and the dovetail groove, and the other end of the Z-shaped connecting piece is connected with the side long vertical rod of the bridge body or the ladder way straight rod of the ladder way through the bolt.

Furthermore, the transverse truss comprises an upper transverse rod, a lower transverse rod, at least one straight rod and a first inclined rod, wherein the two ends of the upper transverse rod and the lower transverse rod are respectively and vertically connected with the lower parts of the two corresponding side long vertical rods, the positions close to the middle parts of the upper transverse rod and the lower transverse rod, and the straight rod and the first inclined rod are connected with the middle parts of the upper transverse rod and the lower transverse rod; the upper cross rod and the lower cross rod are connected with the side long vertical rods through bolts; the straight rod and the first inclined rod are connected with the upper cross rod and the lower cross rod through bolts; the bridge body step plate is fixed on the upper cross rod through the matching of a bolt and a platform plate fixing plate;

further, the truss body unit includes middle truss body of organizing, the two sets of truss bodies in left side and the two sets of truss bodies in right side, and wherein, the two sets of truss bodies in left side and the two sets of truss bodies in right side correspond left side lane and right side lane setting respectively, middle truss body of organizing, the two sets of truss bodies in left side and the two sets of truss bodies in right side are respectively through connecting plate and a plurality of bolted connection.

Furthermore, the outer sides and the inner sides of the upper parts of the side long vertical rods of the vertical trusses on the two sides are respectively provided with an outer side upper longitudinal beam and an inner side upper longitudinal beam through the same bolt; the outer sides and the inner sides of the lower parts of the side long vertical rods of the two side vertical trusses are respectively provided with an outer side lower longitudinal beam and an inner side lower longitudinal beam through the same bolt; the outer sides of the outer upper longitudinal beam and the outer lower longitudinal beam are provided with elongated dovetail grooves, the plurality of decorative grid rods are arranged on the outer upper longitudinal beam and the outer lower longitudinal beam in parallel through the matching of bolts and the dovetail grooves, the inner upper longitudinal beam is fixedly provided with a bridge top longitudinal beam through bolts, a top cross rod is arranged between the two bridge top longitudinal beams, and the bridge ceilings are arranged on the top cross rod through bolts.

Furthermore, the ladder way longitudinal beam comprises an aluminum alloy longitudinal beam body with a rectangular cross section and a lap joint seat integrally arranged on the inner side of the aluminum alloy longitudinal beam body, wherein the lap joint seat comprises a horizontal bearing plate, a straight plate integrally connected with the outer end of the horizontal bearing plate and vertical downwards and a supporting inclined plate connected with the lower part of the straight plate; and a top cross beam is arranged between the top longitudinal beams of the two side stairways, and the ceiling of the stairway is arranged on the top cross beam.

Furthermore, the upper caulking groove of the step comprises two convex blocks and one caulking groove arranged between the two convex blocks, the lower caulking groove comprises three convex blocks and two caulking grooves arranged between the three convex blocks, and the two convex blocks of the upper caulking groove are respectively matched with the two caulking grooves between the three convex blocks of the lower caulking groove; the inclined plane plate corresponding to the lower caulking groove is recessed to form a first bolt avoiding position for accommodating the step fixing plate and the fixing bolt; the upper part of the straight plate of the step expands outwards and is intersected with the plane plate to form a sharp corner part; the step inner cavity is also provided with a plurality of reinforcing ribs.

Furthermore, the upper end surface and the lower end surface of the decorative grid rod are connected with an upper transverse sealing rod and a lower transverse sealing rod.

Furthermore, a bridge body water collecting tank is erected on the upper portion of the outer upper longitudinal beam along the length direction of the bridge body, and a water outlet is formed in the bridge body water collecting tank; the ladder way water collecting tank is erected along the length direction of the ladder way on the ladder way upper longitudinal beam and is provided with a water outlet, the right-angle groove made of aluminum profiles is formed in the bridge body water collecting tank and the ladder way water collecting tank, the groove opening faces upwards, the bridge body water collecting tank is fixed on the upper chord and the decorative grid rod through bolts, the tops of the ladder way straight rods are connected with a ladder way top longitudinal beam, and the ladder way water collecting tank is fixed on the ladder way top longitudinal beam and the decorative grid rod through bolts.

Further, the structure of the stairway platform plate is the same as that of the bridge step plate.

In the aspect of processing technology, because the crystal structure of the aluminum metal simple substance is a cubic face center structure, which is equivalent to large-sphere cubic compact packing, the aluminum metal has high machinability, the aluminum alloy material can be used for extruding the section through mechanical pressurization of a press machine to form a section, a plate strip and the like with any section shape, but the hot rolling method cannot be used for producing any section like the extrusion technology, and the aluminum alloy material is also one of the more advantageous characteristics of the aluminum alloy material.

The invention has the beneficial effects that:

1. the web members of the transverse truss and the vertical trusses on the two sides are all made of an independent aluminum tube, so that the combination of the two aluminum tubes is not needed, and the web members are prevented from being bent due to the fact that the two aluminum tubes are combined and the adopted bolt is connected.

2. The whole continuity of the transverse truss and the vertical trusses on the two sides is better, and the segmented connecting nodes are connected through connecting plates and bolts, so that the integrity of the sectional materials is better ensured.

3. The upper chord and the lower chord are additionally provided with connecting plate stacking pieces, so that the stability of the truss is better.

4. Each group of truss body units comprises a plurality of groups of transverse trusses and two side vertical trusses which are parallel and are arranged according to a certain distance, the two side vertical trusses and the transverse trusses are perpendicular to each other, the assembly is quick and convenient, and the strength of the bridge body is improved.

5. The stair steps are embedded and connected end to end, and are fixed on the stair way longitudinal beam through the matching of the bolts and the stair fixing plates, the stair way platform plates are spliced through the grooves and the lugs and are fixed on the stair way longitudinal beam through the matching of the bolts and the stair platform plate fixing plates, and the assembly is quick and convenient.

6. The upper portion and the lower part in the outside of aluminum alloy longeron body are equipped with rectangular shape bolt dovetail, and the ladder way straight-bar passes through bolt and bolt dovetail cooperation to be fixed on the ladder way longeron, and the ladder way straight-bar assembles swiftly convenient, and installs the vertically light trough on the ladder way straight-bar, installs LED lamp area in the light trough, not only throws light on but also plays the effect of ornament lamp.

7. The bridge is characterized in that a plurality of grid rods are arranged on two sides of the bridge body of the overpass and two sides of the ladder way, right-angled grooves are formed in two sides of each grid rod, a lamp groove is formed in the middle of the bottom of each right-angled groove, LED lamp strips are installed in the lamp grooves, the grid rods play a role in enclosing the overpass and improving the overall structural strength of the bridge body, and light emitted from two sides of each grid rod enables the bridge body to be attractive at night and also plays a role in illuminating pedestrians.

8. The aluminum alloy handrail is convenient to install and improves the safety of old, young or weak people when crossing an overpass.

9. The right-angle groove that pontic water catch bowl and ladder way water catch bowl were made by the aluminium alloy, the notch up, pontic water catch bowl erects longeron upper portion on the outside and passes through the bolt fastening again on long montant of side and pontic bars, ladder way water catch bowl erects longeron upper portion on the ladder way and passes through the bolt fastening again on ladder way straight-bar and ladder way bars, it is swift convenient to assemble, opens the rainwater drainage effectively, avoids drenching on the bridge way and on the ladder way.

10. By adopting the steel structure capping beam structure and the transverse partition beam, the first longitudinal partition beam and the second longitudinal partition beam, the weight of the pier is reduced, and the supporting strength of the steel structure capping beam is effectively improved. Two pairs of supporting steel base plates are arranged on two sides of the upper part of a top plate of one steel structure capping beam for the bridge pier at the intersection of the bridge body and the ladder way,

simultaneously, the bridge body and the ladder way are loaded, thereby reducing the number of piers.

The aluminum alloy pedestrian overpass has light dead weight, reduces the transportation cost and the foundation cost of the ground; the construction method has the advantages of short field construction period, high speed, small installation difficulty, no need of long-time road closure and obstacle setting, good structural corrosion resistance, extremely low maintenance cost, high recovery rate and low recovery treatment cost, and the disassembled aluminum alloy materials are all renewable aluminum alloy materials.

Drawings

FIG. 1 is a schematic diagram of a bridge structure of an aluminum alloy pedestrian overpass (without decorative grid bars);

FIG. 2 is a partially enlarged structural schematic view of a bridge body structure of an aluminum alloy pedestrian overpass (when no decorative grid rod is installed) according to the present invention;

FIG. 3 is another enlarged partial structural view of the bridge body structure of the aluminum alloy pedestrian overpass (after the decorative grid rods are installed) according to the invention;

FIG. 4 is a schematic structural diagram of a cross section of a bridge body structure of an aluminum alloy pedestrian overpass (after installation of decorative grid rods) of the invention;

FIG. 5 is a schematic structural view of a bridge step plate according to the present invention;

FIG. 6 is an enlarged partial schematic view of the step plate of the present invention;

fig. 7 is a schematic structural view of the landing slab of the stairway of the present invention;

FIG. 8 is an enlarged, fragmentary structural view of B-B of the landing deck of FIG. 7 in cooperation with one another;

FIG. 9 is a schematic view of the step tread of the present invention;

FIG. 10 is a schematic structural view of a step part of an aluminum alloy pedestrian overpass of the present invention;

FIG. 11 is an enlarged partial schematic view of the stair step configuration A-A of FIG. 10;

FIG. 12 is a schematic structural view of a cross section of a ladder way of the present invention;

FIG. 13 is a schematic structural view of the stairway of the present invention (when the decorative grills and the stairway ceiling are not installed);

FIG. 14 is an enlarged partial schematic view of C-C of FIG. 12;

FIG. 15 is a schematic structural view of a ramp stringer of the present invention;

FIG. 16 is a schematic view of a partial structure of a ladder way bar of an aluminum alloy pedestrian overpass in a top view;

FIG. 17 is a schematic view of an installed handrail structure of an aluminum alloy pedestrian overpass of the invention

FIG. 18 is an enlarged partial schematic view of the drain D-D of FIG. 12;

FIG. 19 is a schematic structural diagram of a bridge body of an aluminum alloy pedestrian overpass of the present invention;

fig. 20 is a schematic view of a pier supporting structure according to the present invention;

FIG. 21 is a schematic top view of the steel structure capping beam of the present invention;

fig. 22 is a schematic top view of the steel structure capping beam of the present invention with two pairs of supporting steel tie plates on the top plate.

Detailed Description

The present invention will be described in detail below with reference to fig. 1 to 22.

As shown in fig. 1-18, one embodiment of the present invention: an aluminum alloy pedestrian bridge comprises supporting piers, a bridge structure and a corridor structure which are made of aluminum alloy materials, a plurality of stairway straight rods 3, stairway top longitudinal beams 64 installed at the tops of the stairway straight rods 3, a stairway ceiling 62 installed on the upper portions of the stairway top longitudinal beams 64, a plurality of decorative grid rods 5 installed on two outer sides of the bridge and the stairway, a bridge ceiling 61, bridge handrails and stairway handrails which are respectively arranged on two inner sides of the bridge and two inner sides of the stairway, wherein the bridge structure comprises at least two groups of truss body units 1 which are spliced through connecting plates and bolts, each truss body unit 1 comprises a plurality of groups of transverse trusses and two side vertical trusses which are arranged in parallel at a certain distance, the two side vertical trusses are arranged perpendicular to the transverse trusses, and the two side vertical trusses respectively comprise upper chords 11, lower chords 12, a plurality of side long vertical rods 13 and side oblique rods 14; the upper chord 11, the lower chord 12, the side long vertical rods 13 and a plurality of groups of transverse trusses are connected into truss body units through connecting plates and bolts, and the truss body units are spliced into a truss body 1 through the connecting plates 151 and the bolts 152; the bridge ceiling 61 is mounted on the upper part of the side long vertical rod 13.

The transverse truss comprises an upper cross rod 16 and a lower cross rod 17, at least one straight rod 18 and a first inclined rod 19, wherein the two ends of the upper cross rod 16 and the lower cross rod 17 are respectively and vertically connected with the lower parts of the two corresponding side long vertical rods 13 and the positions close to the middle parts of the upper cross rod and the lower cross rod; the upper cross bar 16 and the lower cross bar 17 are connected with the side long vertical bars 13 through bolts; the straight rod 18 and the first diagonal rod 19 are connected with the upper cross rod 17 and the lower cross rod 18 through bolts; the bridge body step plate 2 is fixed on the upper cross bar 16 through the matching of bolts and a platform plate fixing plate 25.

Truss body unit 1 includes middle truss body of organizing, the two sets of truss bodies in left side and the two sets of truss bodies in right side, and wherein, the two sets of truss bodies in left side and the two sets of truss bodies in right side correspond left side lane and right side lane setting respectively, middle truss body of organizing, the two sets of truss bodies in left side and the two sets of truss bodies in right side are respectively through connecting plate and a plurality of bolted connection.

The outer side and the inner side of the upper parts of a plurality of side long vertical rods 13 of the vertical trusses at two sides are respectively provided with an outer side upper longitudinal beam 81 and an inner side upper longitudinal beam 84 through the same bolt; the outer side and the inner side of the lower parts of a plurality of side long vertical rods 13 of the vertical trusses at two sides are respectively provided with an outer side lower longitudinal beam 82 and an inner side lower longitudinal beam 85 through the same bolt; the outer sides of the outer side upper longitudinal beam 81 and the outer side lower longitudinal beam 82 are provided with elongated dovetail grooves 83, the plurality of decorative grid bars 5 are matched with the dovetail grooves 83 through bolts and are parallelly installed on the outer side upper longitudinal beam 81 and the outer side lower longitudinal beam 82, the inner side upper longitudinal beam 84 is fixedly provided with a bridge top longitudinal beam 86 through bolts, a top cross rod 88 is installed between the two bridge top longitudinal beams 86, and the bridge ceiling 61 is installed on the top cross rod 88 through bolts.

As shown in fig. 4-6, the bridge structure of the present invention comprises a bridge step plate 2, the cross-sectional outer contour of the bridge step plate 2 is rectangular, straight spacer ribs are arranged in the bridge step plate 2, a left groove 21 is arranged at the upper part of the left side of the splicing surface of the bridge step plate 2, and a left protrusion 22 is arranged at the lower part; the upper part of the right side of the splicing surface of the bridge body step plate 2 is provided with a right bump 23, and the lower part is provided with a right groove 24 and a platform plate fixing plate 25; the left groove 21 is matched with the right bump 23, the left bump 22 is matched with the right groove 24, a second bolt avoiding position 26 is arranged at the position, corresponding to the platform board fixing plate 25, of the left bump 22, and an anti-skid edge 27 is arranged on the upper surface of the bridge body step board 2; the bridge body step plate 2 is fixed on the transverse truss through the bolt and the platform plate fixing plate 25 in a matching way.

As shown in fig. 7-15, the stairway structure of the present invention comprises two stairway supports 7 installed on a support pier 6, two stairway longitudinal beams 31 installed on the upper parts of the two stairway supports 7, a stairway connecting beam 33 connecting the two stairway longitudinal beams 31, a stairway secondary beam 32 installed between the two stairway longitudinal beams 31, a stairway platform plate 34 installed on the upper parts of the stairway longitudinal beams 31, a stairway step 4 and a ramp, wherein the upper parts and the lower parts of the outer sides of the stairway longitudinal beams 31 are provided with elongated bolt dovetail grooves 311, and the stairway straight rods 3 are fixed on the stairway longitudinal beams 31 by the bolts and the bolt dovetail grooves 311 in a matching manner; the outer side of the straight rod 3 of the ladder way is also provided with an upper side rod 38 and a lower side rod 39, and the decorative grid rod 5 of the ladder way is fixed on the upper side rod 38 and the lower side rod 39 through bolts. The structure of the stairway platform boards 34 is the same as that of the bridge step boards 2.

The stair steps 4 comprise a plane plate 41, an inclined plane plate 42 and a straight plate 43, an upper caulking groove 44 and a stair fixing plate 45 which are obliquely opened upwards are arranged at the intersection of the inclined plane plate 42 and the plane plate 41, a lower caulking groove 46 which is obliquely opened downwards is arranged at the intersection of the inclined plane plate 42 and the straight plate 43, the stair steps 4 are respectively embedded with the previous stair step 4 and the next stair step 4 through the upper caulking groove 44 and the lower caulking groove 46, the stair steps 4 are fixed on the stair stringer 31 through bolts and the stair fixing plate 45 in a matched mode, and anti-skidding ribs 40 are arranged on the upper surface of the plane plate 41 of the stair steps 4.

The stairway longitudinal beam 31 comprises an aluminum alloy longitudinal beam body 30 with a rectangular cross section and a lapping seat integrally arranged on the inner side of the aluminum alloy longitudinal beam body 30, wherein the lapping seat comprises a horizontal bearing plate 35, a straight plate 36 which is integrally connected with the outer end of the horizontal bearing plate 35 and is vertical downwards and a supporting inclined plate 37 connected with the lower part of the straight plate 36; a top cross beam 63 is arranged between the top longitudinal beams 64 of the two sides of the stairway, and the stairway ceiling 62 is arranged on the top cross beam 63.

The upper caulking groove 44 of the step 4 comprises two convex blocks and one caulking groove arranged between the two convex blocks, the lower caulking groove 46 comprises three convex blocks and two caulking grooves arranged between the three convex blocks, and the two convex blocks of the upper caulking groove 44 are respectively matched with the two caulking grooves between the three convex blocks of the lower caulking groove 46; the inclined plane plate 42 corresponding to the lower caulking groove 46 is recessed to form a first bolt avoiding position 48 for accommodating the step fixing plate 45 and the fixing bolt; the upper part of the straight plate 43 of the stair step 4 expands outwards to form a sharp corner 49 with the intersection of the flat plate 41; the inner cavity of the step 4 is also provided with a plurality of reinforcing ribs 47.

As shown in fig. 16, the decorative grid rod 5 of the present invention comprises a plurality of aluminum alloy section rods which are arranged in parallel and vertically at a certain distance on both sides of the overpass and the two sides of the stairway, right-angled grooves are arranged on both sides of the decorative grid rod 5, a light trough 51 is arranged in the middle of the bottom of the right-angled groove, and an LED light bar 52 is arranged in the light trough 51.

As shown in fig. 17, the bridge body handrail and the stairway handrail of the invention comprise an aluminum alloy upper beam 91, an aluminum alloy lower beam 92, a blocking body 90 fixedly arranged at the corresponding inner sides of the aluminum alloy upper beam 91 and the aluminum alloy lower beam 92, and a handrail 93 arranged at the upper part of the aluminum alloy upper beam 91, wherein two convex blocks 911 are arranged at the upper part of the aluminum alloy upper beam 91, and hooks 912 are arranged at the inner sides of the tail ends of the two convex blocks 911; the armrest 93 comprises an arc-shaped buckle cover 931 at the upper part and clamping grooves 932 arranged at two sides of the lower part of the arc-shaped buckle cover 931, wherein a clasp 933 matched with the clamping hook 932 is arranged at one inner side edge of each of the two clamping grooves 932; the outer sides of the aluminum alloy upper cross beam 91 and the aluminum alloy lower cross beam 92 are provided with strip-shaped dovetail grooves 94, and the baffle body 90 comprises a glass clamp 95 and toughened laminated glass 96 embedded in a clamping groove of the glass clamp 95; the aluminum alloy upper cross beam 91 and the aluminum alloy lower cross beam 92 are respectively connected with one end of the Z-shaped connecting piece 6 through the matching of a bolt and a dovetail groove 94, and the other end of the Z-shaped connecting piece 6 is connected with the side long vertical rod 13 of the bridge body or the ladder way straight rod 3 of the ladder way through a bolt.

As shown in fig. 10 and 18, a bridge body water collecting groove 87 is erected on the upper part of the outer upper longitudinal beam 81 along the length direction of the bridge body, and the bridge body water collecting groove 87 is provided with a water outlet; the ladder way water collecting tank 88 is erected along the length direction of the ladder way on the upper longitudinal beam 41 of the ladder way, the ladder way water collecting tank 88 is provided with a water outlet, the bridge body water collecting tank 87 and the ladder way water collecting tank 88 are right-angle tanks made of aluminum profiles, the notches face upwards, the bridge body water collecting tank 87 is fixed on the upper chord 11 and the decorative grid rod 5 through bolts, the tops of a plurality of ladder way straight rods 3 are connected with a ladder way top longitudinal beam 64, and the ladder way water collecting tank 88 is fixed on the ladder way top longitudinal beam 64 and the decorative grid rod 5 through bolts. The upper end surface and the lower end surface of the decorative grid rod 5 are connected with an upper horizontal sealing rod 53 and a lower horizontal sealing rod.

As shown in fig. 19 to 22, the present invention comprises a steel structure capping beam a1 welded by steel plates, a steel pipe column a2, a bearing platform a3 and a pile foundation a4, the steel structure capping beam a1 comprises a rectangular box body arranged at the upper part and an inverted trapezoidal box body arranged at the lower part of the rectangular box body, the steel structure capping beam a1 comprises a cavity enclosed by a side web a11, a middle web a12, a top plate a13, a bottom plate a14 and an end plate a15, a plurality of transverse beams welded in parallel and vertically in the cavity of the steel structure capping beam a1, the transverse beams comprise a50, a middle transverse beam a51 and a left transverse beam a52 most adjacent to the middle transverse beam a51 at the left side and a right transverse beam a53 most adjacent to the middle transverse beam a51 at the right side, the middle transverse beam a51, the left transverse beam a51 and the right transverse beam a51 are pressed on the steel pipe column a51 a by the vertical projection line, the vertical transverse beam a51 a and the vertical longitudinal beam 51 a of the steel structure is welded in parallel and the vertical transverse beam 51 a is arranged between the vertical longitudinal beam 51 a of the steel structure, the cross section surrounded by the left transverse partition beam a52, the right transverse partition beam a53, the first longitudinal partition beam a54 and the second longitudinal partition beam a55 is square, and the four corners of the square are overlapped with the pipe wall of the steel pipe column a 2. The first longitudinal partition beam a54 and the second longitudinal partition beam a55 are two plates welded in line between the left lateral partition beam a52 and the middle lateral partition beam a51, and between the middle lateral partition beam a51 and the right lateral partition beam a53, respectively. A pair of supporting steel backing plates a6 are arranged on two sides of the upper part of the top plate a13 of the steel structure cover beam a 1. Two pairs of supporting steel backing plates a6 are arranged on two sides of the upper part of a top plate a13 of the steel structure bent cap 1 at the intersection of the bridge body and the ladder way, and the two pairs of supporting steel backing plates are respectively used for supporting the bridge body and the ladder way. And a plurality of reinforcing ribs a7 are welded at the connecting position of the steel pipe column a2 and the steel structure bent cap a 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An aluminum alloy pedestrian overpass is characterized in that: comprises supporting piers (6), a bridge structure and a ladder corridor structure made of aluminum alloy materials, a plurality of ladder way straight rods (3), ladder way top longitudinal beams (64) arranged at the tops of the ladder way straight rods (3), a ladder way ceiling (62) arranged at the upper parts of the ladder way top longitudinal beams (64), a plurality of decorative grid rods (5) arranged at the two outer sides of the bridge and the ladder way, a bridge ceiling (61), and bridge handrails and ladder way handrails respectively arranged at the two inner sides of the bridge and the two inner sides of the ladder way, wherein,

the bridge structure comprises at least two groups of truss body units (1) which are spliced through connecting plates and bolts, each group of truss body units (1) comprises a plurality of groups of transverse trusses and two side vertical trusses which are parallel and arranged at a certain distance, the two side vertical trusses are perpendicular to the transverse trusses, and the two side vertical trusses respectively comprise an upper chord (11), a lower chord (12), a plurality of side long vertical rods (13) and side diagonal rods (14); the upper chord member (11), the lower chord member (12), the side long vertical rods (13) and a plurality of groups of transverse trusses are connected into truss body units through connecting plates and bolts, and the truss body units are spliced into a truss body (1) through the connecting plates (151) and the bolts (152); the bridge body ceiling (61) is arranged on the upper part of the side long vertical rod (13);

the bridge structure comprises bridge step plates (2), the outer profile of the cross section of each bridge step plate (2) is rectangular, straight spacer ribs are arranged in the bridge step plates (2), a left groove (21) is formed in the upper portion of the left side of the splicing surface of each bridge step plate (2), and a left bump (22) is formed in the lower portion of the left side of the splicing surface of each bridge step plate; the upper part of the right side of the splicing surface of the bridge body step plate (2) is provided with a right bump (23), and the lower part is provided with a right groove (24) and a platform plate fixing plate (25); the left groove (21) is matched with the right bump (23), the left bump (22) is matched with the right groove (24), a second bolt avoiding position (26) is arranged at the position, corresponding to the platform board fixing plate (25), of the left bump (22), and an anti-skid edge (27) is arranged on the upper surface of the bridge body step board (2); the bridge body step plate (2) is fixed on the transverse truss in a matched mode through bolts and a platform plate fixing plate (25);

the ladder way structure comprises two ladder way supports (7) arranged on a support pier (6), two ladder way longitudinal beams (31) respectively arranged on the upper parts of the two ladder way supports (7), a ladder way connecting beam (33) for connecting the two ladder way longitudinal beams (31), a ladder way secondary beam (32) arranged between the two ladder way longitudinal beams (31), a ladder way platform plate (34) arranged on the upper parts of the ladder way longitudinal beams (31), a ladder step (4) and a ramp, wherein the upper part and the lower part of the outer side of each ladder way longitudinal beam (31) are provided with a strip-shaped bolt dovetail groove (311), and each ladder way straight rod (3) is fixed on the corresponding ladder way longitudinal beam (31) in a matched manner through a bolt and the bolt dovetail groove (311); the outer side of the straight rod (3) of the ladder way is also provided with an upper side rod (38) and a lower side rod (39), and the decorative grid rod (5) of the ladder way is fixed on the upper side rod (38) and the lower side rod (39) through bolts;

the stair steps (4) comprise a plane plate (41), an inclined plane plate (42) and a straight plate (43), an upper caulking groove (44) and a stair fixing plate (45) which are obliquely opened upwards are arranged at the intersection of the inclined plane plate (42) and the plane plate (41), a lower caulking groove (46) which is obliquely opened downwards is arranged at the intersection of the inclined plane plate (42) and the straight plate (43), the stair steps (4) are respectively embedded with the previous stair steps (4) and the next stair steps (4) through the upper caulking groove (44) and the lower caulking groove (46), the stair steps (4) are fixed on the stair stringer (31) in a matched mode through bolts and the stair fixing plate (45), and anti-skidding ribs (40) are arranged on the upper surface of the plane plate (41) of the stair steps (4);

the decorative grid rod (5) comprises a plurality of aluminum alloy section bars which are arranged on two sides of an overpass bridge body and two sides of a ladder way in parallel and perpendicularly according to a certain distance, right-angle grooves are formed in two sides of the decorative grid rod (5), a light trough (51) is arranged in the middle of the bottom of each right-angle groove, and an LED light bar (52) is installed in each light trough (51).

2. The aluminum alloy pedestrian bridge of claim 1, wherein: the bridge body handrail and the stairway handrail comprise an aluminum alloy upper cross beam (91), an aluminum alloy lower cross beam (92), a blocking body (90) fixedly arranged on the corresponding inner sides of the aluminum alloy upper cross beam (91) and the aluminum alloy lower cross beam (92) and a handrail (93) arranged on the upper part of the aluminum alloy upper cross beam (91), wherein two convex blocks (911) are arranged on the upper part of the aluminum alloy upper cross beam (91), and clamping hooks (912) are arranged on the inner sides of the tail ends of the two convex blocks (911); the armrest (93) comprises an arc-shaped buckle cover (931) at the upper part and clamping grooves (932) arranged at two sides of the lower part of the arc-shaped buckle cover (931), and a clasp (933) matched with the clamping hook (932) is arranged at one inner side edge of each of the two clamping grooves (932); the outer sides of the aluminum alloy upper cross beam (91) and the aluminum alloy lower cross beam (92) are provided with strip-shaped dovetail grooves (94), and the baffle body (90) comprises a glass clamp (95) and toughened laminated glass (96) embedded in the clamping grooves of the glass clamp (95); the aluminum alloy upper cross beam (91) and the aluminum alloy lower cross beam (92) are respectively connected with one end of the Z-shaped connecting piece (6) through the matching of a bolt and a dovetail groove (94), and the other end of the Z-shaped connecting piece (6) is connected with a side long vertical rod (13) of the bridge body or a ladder way straight rod (3) of the ladder way through a bolt.

3. The aluminum alloy pedestrian bridge of claim 1, wherein: the transverse truss comprises an upper cross rod (16) and a lower cross rod (17) which are vertically connected with the lower parts of the two corresponding side long vertical rods (13) at the two ends respectively and the positions close to the middle part, at least one straight rod (18) connecting the middle parts of the upper cross rod (16) and the lower cross rod (17) and a first inclined rod (19); the upper cross rod (16) and the lower cross rod (17) are connected with the side long vertical rods (13) through bolts; the straight rod (18) and the first inclined rod (19) are connected with the upper cross rod (17) and the lower cross rod (18) through bolts; the bridge body step plate (2) is matched and fixed on the upper cross rod (16) through bolts and a platform plate fixing plate (25).

4. The aluminum alloy pedestrian bridge of claim 1, wherein: truss body unit (1) is including middle truss body of organizing, the two sets of truss bodies in left side and the two sets of truss bodies in right side, and wherein, the two sets of truss bodies in left side and the two sets of truss bodies in right side correspond left side lane and right side lane setting respectively, middle truss body of organizing, the two sets of truss bodies in left side and the two sets of truss bodies in right side are respectively through connecting plate and a plurality of bolted connection.

5. The aluminum alloy pedestrian bridge of claim 1, wherein: the outer sides and the inner sides of the upper parts of a plurality of side long vertical rods (13) of the vertical trusses at the two sides are respectively provided with an outer side upper longitudinal beam (81) and an inner side upper longitudinal beam (84) through the same bolt; the outer sides and the inner sides of the lower parts of a plurality of side long vertical rods (13) of the vertical trusses at the two sides are respectively provided with an outer side lower longitudinal beam (82) and an inner side lower longitudinal beam (85) through the same bolt; longeron (81) and outside longeron (82) outside are equipped with rectangular shape dovetail (83) on the outside, a plurality of decoration bars (5) are through bolt and dovetail (83) cooperation and parallel arrangement on longeron (81) and outside longeron (82) on the outside, on the inboard longeron (84) through bolt fixed mounting have pontic top longeron (86), install between two pontic top longerons (86) top horizontal pole (88), pontic ceiling (61) are through the bolt mounting on top horizontal pole (88).

6. The aluminum alloy pedestrian bridge of claim 1, wherein: the ladder way longitudinal beam (31) comprises an aluminum alloy longitudinal beam body (30) with a rectangular cross section and a lapping seat integrally arranged on the inner side of the aluminum alloy longitudinal beam body (30), wherein the lapping seat comprises a horizontal bearing plate (35), a straight plate (36) integrally connected with the outer end of the horizontal bearing plate (35) and vertical downwards and a supporting inclined plate (37) connected with the lower part of the straight plate (36); a top cross beam (63) is arranged between the top longitudinal beams (64) of the two sides of the stairway, and a stairway ceiling (62) is installed on the top cross beam (63).

7. The aluminum alloy pedestrian bridge of claim 1, wherein: the upper caulking groove (44) of the step (4) comprises two convex blocks and one caulking groove arranged between the two convex blocks, the lower caulking groove (46) comprises three convex blocks and two caulking grooves arranged between the three convex blocks, and the two convex blocks of the upper caulking groove (44) are respectively matched with the two caulking grooves between the three convex blocks of the lower caulking groove (46); the inclined plane plate (42) corresponding to the lower caulking groove (46) is recessed to form a first bolt avoiding position (48) for accommodating the step fixing plate (45) and the fixing bolt; the upper part of the straight plate (43) of the step (4) expands outwards and is intersected with the plane plate (41) to form a sharp corner part (49); the inner cavity of the step (4) is also provided with a plurality of reinforcing ribs (47).

8. The aluminum alloy pedestrian bridge of claim 1, wherein: the upper end surface and the lower end surface of the decorative grid rod (5) are connected with an upper transverse sealing rod (53) and a lower transverse sealing rod.

9. The aluminum alloy pedestrian bridge of claim 5, wherein: a bridge body water collecting tank (87) is erected at the upper part of the outer upper longitudinal beam (81) along the length direction of the bridge body, and a water outlet is formed in the bridge body water collecting tank (87); the ladder way is gone up longeron (41) and is erect ladder way water catch bowl (88) along ladder way length direction, ladder way water catch bowl (88) are equipped with the outlet, pontic water catch bowl (87) and ladder way water catch bowl (88) are the right angle groove of making by the aluminium alloy, and the notch is up, and pontic water catch bowl (87) are fixed on last chord member (11) and decoration bars (5) through the bolt, and the top of a plurality of ladder way straight-bars (3) is connected with ladder way top longeron (64), and ladder way water catch bowl (88) are fixed on ladder way top longeron (64) and decoration bars (5) through the bolt.

10. The aluminum alloy pedestrian bridge of claim 1, wherein: the structure of the stairway platform plate (34) is the same as that of the bridge step plate (2).