Bridge nose structure allowing internal passage of non-motorized vehicles

Abstract

A bridge wind nozzle structure with internal passable non-motor vehicle, comprising an outer steel plate, a transverse partition plate, and a driving surface plate, the transverse partition plate is provided with a hole passing through the whole bridge, and the driving surface plate is arranged at the lower part of the hole to realize the function of passing non-motor vehicles; the shape of the outer steel plate of the wind nozzle is consistent with that of a conventional steel box girder wind nozzle, so that the main girder section can keep a streamline shape, and the wind resistance stability performance requirement of the large-span bridge is ensured; the upper steel plate of the outer steel plate is provided with a closed transparent window frame to ensure lighting, and the lower steel plate is provided with a semi-open transparent window frame and a closed transparent window frame to ensure lighting and ventilation. The non-motor vehicle lane is arranged in the wind nozzle, compared with the case of being located on the bridge surface, the total width of the bridge section and the non-motor vehicle road surface elevation can be effectively reduced, and the non-motor vehicle lane longitudinal section is optimized; for the large-span bridge with high clearance requirement under the bridge, the total length of the bridge can be reduced while realizing the non-motor vehicle riding traffic function, and the economic performance is good.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of bridge, and particularly relates to a bridge wind nozzle structure with internal passable non-motor vehicles. BACKGROUND

[0002] With the development of society, the concept of people-oriented is gradually accepted by people, and the non-motor vehicle passing through the bridge is a problem that must be considered in the design of some bridge schemes, especially in some urban bridges, the demand of non-motor vehicle passing through the river is relatively strong.

[0003] However, the clearance requirement under the bridge of the large-span bridge crossing the road or river is generally high, and the longitudinal slope requirement of the non-motor vehicle riding is also relatively high, and the cost of realizing the riding function of the non-motor vehicle on the whole line is very high, and sometimes it is even impossible to realize, and only partial riding on the section can be realized.

[0004] In order to ensure the non-motor vehicle to ride through the road or river, some bridges have made attempts, and the Ningbo Zhongxing Bridge is a relatively successful case. The Ningbo Zhongxing Bridge is a low tower cable-stayed bridge, and the main beam is a steel box beam. The conventional steel box beam cantilever is arranged on the top surface of the main beam structure, and the Zhongxing Bridge not only sets the cantilever on the top surface for the motor vehicle to pass through, but also sets the cantilever on the bottom surface for the non-motor vehicle to pass through. Since the non-motor vehicle passage is located on the bottom surface of the main beam, the road surface elevation is reduced by about one beam height, and the climbing height is reduced, thereby creating good conditions for the non-motor vehicle to ride through the river.

[0005] The arrangement mode of setting the cantilever on the top and bottom surfaces of the Zhongxing Bridge also has its limitations. The setting of the lower cantilever makes the main beam section become a blunt section, and the wind-resistant stability performance of the structure is poor, and can only be applied to the bridge structure with small span or the bridge type with large system stiffness. When the span is further increased or the bridge type with small system stiffness is adopted, such as large-span or super large-span suspension bridge, the structure arrangement mode of the Zhongxing Bridge will be difficult to meet the wind-resistant stability performance requirements. In this case, another bridge structure arrangement mode which can effectively reduce the road surface elevation of the non-motor vehicle passage and has good wind-resistant stability performance must be conceived. SUMMARY

[0006] The present application provides a bridge wind nozzle structure with internal passable non-motor vehicles, which can facilitate the non-motor vehicle to ride through the river while keeping the main beam section in good streamline shape and ensuring the wind-resistant stability performance requirements of the large-span bridge.

[0007] The purpose of the present application can be achieved by the following technical scheme: a bridge wind nozzle structure with internal passable non-motor vehicles, comprising an outer steel plate, a transverse partition plate, and a riding surface plate, wherein the transverse partition plate is provided with a hole passing through the whole bridge, and the riding surface plate is arranged at the lower part of the hole to realize the function of passing through the non-motor vehicle.

[0008] Further, the outer steel plates include upper steel plates, lower steel plates, top steel plates, bottom steel plates, upper steel plate longitudinal stiffening ribs, lower steel plate longitudinal stiffening ribs, top steel plate longitudinal stiffening ribs, bottom steel plate longitudinal stiffening ribs, the upper steel plates, the lower steel plates, the top steel plates, and the bottom steel plates form the outer facade of the wind mouth, the upper steel plates and the lower steel plates are both arranged obliquely relative to the transverse direction of the bridge, the lower side of the upper steel plate is connected to the upper side of the lower steel plate, the included angle between the upper steel plate and the lower steel plate is 60-90°, one side of the top steel plate is connected to the upper side of the upper steel plate, and one side of the bottom steel plate is connected to the lower side of the lower steel plate.

[0009] Further, the upper steel plates and the lower steel plates are both provided with a plurality of window frame openings along the longitudinal direction of the bridge, the window frame openings on the upper steel plates are provided with closed transparent window frames, and the window frame openings on the lower steel plates are provided with closed transparent window frames and semi-open transparent window frames.

[0010] The inner sides of the upper steel plates and the lower steel plates are both provided with a plurality of window frame circumferential stiffening ribs corresponding to the plurality of window frame openings, and each window frame circumferential stiffening rib is arranged around the corresponding window frame opening.

[0011] The semi-open transparent window frames are opened towards the inside of the wind mouth and are limited and fixed in the opening angle by limiting devices. The opening angle of the semi-open transparent window frames ranges from 15° to 45°.

[0012] The closed transparent window frames and the semi-open transparent window frames are both acrylic window frames.

[0013] The area ratio of the closed transparent window frames on the upper steel plates to the upper steel plates is 30%, the area ratio of the closed transparent window frames on the lower steel plates to the lower steel plates is 15%, and the area ratio of the semi-open transparent window frames on the lower steel plates to the lower steel plates is 15%.

[0014] Further, the transverse partition plates include transverse partition plate webs and circumferential stiffening ribs, the transverse partition plate webs are provided with holes, and the circumferential stiffening ribs are arranged along the edges of the holes.

[0015] Further, the driving surface plates include structure layers, paving layers, and driving lane railings, the structure layers are installed at the bottom of the circumferential stiffening ribs of the transverse partition plates, the paving layers are arranged on the structure layers, and the driving lane railings are arranged on both sides of the structure layers in the transverse direction of the bridge.

[0016] Compared with the prior art, the beneficial effects of the present application are: the bridge wind fairing structure can be applied to both sides of the steel box girder, the shape of the outer side steel plate of the wind fairing is consistent with that of the conventional steel box girder wind fairing, the main girder cross section can be kept in a streamlined shape, and the wind stability performance requirements of the long-span bridge are ensured; the non-motor vehicle lane is arranged inside the wind fairing, compared with the case of being located on the bridge surface, the total width of the bridge cross section can be effectively reduced, and since the driving surface plate of the non-motor vehicle lane is arranged close to the bottom, the non-motor vehicle lane surface elevation can be lowered by about one main girder height, the non-motor vehicle lane longitudinal section is optimized, for the long-span bridge with high bridge clearance requirements, the total length of the bridge can be reduced while realizing the non-motor vehicle riding traffic function, and good economic performance is achieved. In addition, holes are opened on the outer side steel plate of the wind fairing, and closed transparent window frames and semi-open transparent window frames are installed, which can effectively improve the driving environment of the non-motor vehicle lane inside the wind fairing, and when the window frame area ratio is in a suitable range, the window frame can maximize the lighting and ventilation functions under the premise of meeting the strength, stiffness and stability requirements. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present application.

[0018] Figure 2 It is Figure 1 It is a cross section schematic diagram of A-A in the present application, showing the arrangement structure of the closed transparent window frame and the semi-open transparent window frame.

[0019] Figure 3 It is Figure 1 It is a cross section schematic diagram of B-B, showing the main installation structure of the driving surface plate.

[0020] Figure 4 It is Figure 1 It is a cross section schematic diagram of A-A, showing the arrangement structure of the closed transparent window frame and the semi-open transparent window frame.

[0021] Figure 5 It is a bridge deck arrangement schematic diagram of the present application applied to the bridge.

[0022] The component reference numbers in the figure are as follows:

[0023] 1 outer side steel plate

[0024] 101 upper steel plate

[0025] 102 lower steel plate

[0026] 103 top steel plate

[0027] 104 bottom steel plate

[0028] 105 upper steel plate longitudinal stiffening rib

[0029] 106 lower steel plate longitudinal stiffening rib

[0030] 107 longitudinal stiffening rib of top steel plate

[0031] 108 longitudinal stiffening rib of bottom steel plate

[0032] 109 hoop stiffening rib of window pane

[0033] 2 cross diaphragm

[0034] 201 web of cross diaphragm

[0035] 202 hoop stiffening rib

[0036] 3 running surface

[0037] 301 structural layer

[0038] 3011 self-tapping screw

[0039] 3012 rubber pad

[0040] 302 paving layer

[0041] 303 running surface barrier

[0042] 4 closed transparent window pane

[0043] 5 semi-open transparent window pane

[0044] 6 steel box girder DETAILED DESCRIPTION

[0045] The specific embodiments of the present application will now be described in detail with reference to the accompanying drawings. The following detailed description of the application is presented in order to better demonstrate how to practice the application and is not intended to limit the scope of the application.

[0046] Referring to Figures 1 to 4 A bridge wind scoop structure for allowing non-motorized vehicles to pass through inside, comprising an outer steel plate 1, a cross diaphragm 2, a running surface 3, a closed transparent window pane 4, and a semi-open transparent window pane 5.

[0047] Referring to Figure 1 and Figure 2 The outer steel plate 1 comprises an upper steel plate 101, a lower steel plate 102, a top steel plate 103, a bottom steel plate 104, a longitudinal stiffening rib 105 of the upper steel plate, a longitudinal stiffening rib 106 of the lower steel plate, a longitudinal stiffening rib 107 of the top steel plate, a longitudinal stiffening rib 108 of the bottom steel plate, and a hoop stiffening rib 109 of the window pane.

[0048] The upper steel plate 101 and the lower steel plate 102 are arranged obliquely relative to the transverse direction of the bridge, the lower side of the upper steel plate 101 and the upper side of the lower steel plate 102 are welded and connected, one side of the top steel plate 103 and the upper side of the upper steel plate 101 are welded and connected, one side of the bottom steel plate 104 and the lower side of the lower steel plate 102 are welded and connected, and the other side of the top steel plate 103 and the bottom steel plate 104 are welded and connected with the top plate and the bottom plate of the steel box girder 6 respectively. The shape of the wind nozzle surrounded by the upper steel plate 101, the lower steel plate 102, the top steel plate 103 and the bottom steel plate 104 is consistent with the conventional steel box girder wind nozzle, the included angle between the upper steel plate 101 and the lower steel plate 102 ranges from 60 to 90 degrees, so that the main girder cross section maintains a streamlined shape to meet the requirements of bridge wind stability performance, and in the embodiment, the included angle between the upper steel plate 101 and the lower steel plate 102 is 85.3 degrees.

[0049] A plurality of upper steel plate longitudinal stiffening ribs 105, a plurality of lower steel plate longitudinal stiffening ribs 106, a plurality of top steel plate longitudinal stiffening ribs 107 and a plurality of bottom steel plate longitudinal stiffening ribs 108 are welded and connected to the inner side surfaces of the upper steel plate 101, the lower steel plate 102, the top steel plate 103 and the bottom steel plate 104 respectively, so as to ensure the stability of the outer steel plate 1 when the wind nozzle participates in the overall stress of the main girder.

[0050] A plurality of window openings are distributed equidistantly along the bridge longitudinal direction on the upper steel plate 101 and the lower steel plate 102, and a plurality of window ring stiffening ribs 109 are welded and connected to the inner side surfaces of the upper steel plate 101 and the lower steel plate 102, each window ring stiffening rib 109 surrounds a window opening, and its main function is to ensure the structural rigidity of the steel plate at the window opening, so as to facilitate the installation of the window while meeting the stability requirements.

[0051] Referring to Figure 1 and Figure 2 A plurality of said diaphragms 2 are distributed equidistantly along the bridge longitudinal direction and correspond one-to-one to the diaphragms of the steel box girder 6, each diaphragm 2 has a shape matching the cross-sectional shape of the wind nozzle, and the side edges of the diaphragm 2 are welded and connected with the inner side surfaces of the upper steel plate 101, the lower steel plate 102, the top steel plate 103 and the bottom steel plate 104, and the outer side surfaces of the outer webs of the steel box girder 6. In the embodiment, the diaphragms of the steel box girder 6 have a longitudinal spacing of 3.5 m, so the diaphragms 2 of the bridge wind nozzle structure also have a longitudinal spacing of 3.5 m.

[0052] Each of the cross diaphragm 2 comprises a cross diaphragm web 201, ring stiffener 202, the cross diaphragm web 201 is provided with a hole, and the hole is provided with ring stiffener 202 along the edge, the size of the hole meets the need to meet the non-motor vehicle lane clearance requirements. In this embodiment, the net width of the single side non-motor vehicle lane is 3.5m, the width of the single side railing is 0.25m, the total width of the single side non-motor vehicle lane is 4m, the non-motor vehicle lane clearance height is not less than 2.5m, so the width of the hole is about 4m, the height is about 3m, the hole is full bridge, which can meet the requirements of non-motor vehicle lane.

[0053] Referring to Figure 1 and Figure 3 , the driving panel 3 is arranged in the lower part of the hole in the cross diaphragm 2, and is arranged along the bridge direction of the bridge. The driving panel 3 comprises a structural layer 301, a paving layer 302, and a driving lane railing 303. The structural layer 301 is installed at the bottom of the ring stiffener 202 of the cross diaphragm 2. The paving layer 302 is arranged on the structural layer 301. The driving lane railing 303 is vertically arranged on both sides of the structural layer 301 in the transverse direction of the bridge. In this embodiment, the structural layer 301 mainly adopts an aluminum buckle plate structure, which is installed at the bottom of the ring stiffener 202 of the cross diaphragm 2 through self-tapping screws 3011, and a 3mm thick rubber pad 3012 is arranged between the aluminum buckle plate and the ring stiffener 202 to reduce vibration. The paving layer 302 adopts 5mm thick methyl methacrylate resin ceramic. The driving lane railing 303 adopts a full steel structure railing, and the transverse width of each driving lane railing 303 is 0.25m and the height is 1.4m.

[0054] Referring to Figure 1 and Figure 4 , the closed transparent window pane 4 is installed on the window pane opening on the upper steel plate 101 and the lower steel plate 102. The closed transparent window pane 4 can improve the driving environment of the non-motor vehicle lane inside the wind nozzle, mainly playing a lighting role. In this embodiment, the window pane area ratio, that is, the ratio of the window pane area to the steel plate area, the window pane area ratio of the closed transparent window pane 4 on the upper steel plate 101 to the upper steel plate 101 is 30%, and the window pane area ratio of the closed transparent window pane 4 on the lower steel plate 102 to the lower steel plate 102 is 15%, so that the closed transparent window pane 4 can play the lighting function to the best under the premise of meeting the strength and rigidity requirements.

[0055] Referring to Figure 1 and Figure 4The semi-open transparent window pane 5 is installed on the window pane hole on the lower steel plate 102, the opening direction of the semi-open transparent window pane 5 is towards the inside of the wind cone, and the opening angle is limited and fixed by the limiting device. The semi-open transparent window pane 5 can improve the driving environment of the non-motor vehicle lane inside the wind cone, and can ventilate while lighting. Only being arranged on the lower steel plate 102 can reduce the possibility of rainwater and the like entering the inside space of the wind cone. The inward opening design can avoid adversely affecting the appearance of the wind cone when the window is opened, ensure the wind stability of the bridge structure, and prevent adversely affecting the landscape of the bridge. The limiting device can avoid the semi-open transparent window pane 5 from shaking in the opening state, the opening angle range of the semi-open transparent window pane 5 is 15-45°, and can be adjusted according to the season and weather condition. In the embodiment, the window pane area ratio of the semi-open transparent window pane 5 on the lower steel plate 102 and the lower steel plate 102 is 15%, so that the semi-open transparent window pane 5 can be optimized in lighting and ventilation function under the premise of meeting the strength and rigidity requirements.

[0056] In the embodiment, the closed transparent window pane 4 and the semi-open transparent window pane 5 both adopt acrylic plates, have high strength, light weight, fireproof and anti-vibration performance, and can better adapt to the vibration of the bridge structure while realizing the lighting and ventilation functions.

[0057] Referring to Figure 5 When the bridge wind cone structure is applied to a bridge, it is arranged on both sides of the steel box girder 6. The shape of the outer side steel plate 1 of the wind cone is consistent with the conventional steel box girder wind cone, so that the cross section of the main girder can maintain a streamlined appearance, and the wind stability performance requirement of the long-span bridge is ensured. The non-motor vehicle lane is arranged inside the wind cone, and compared with the case of being located on the bridge surface, the total width of the bridge cross section can be reduced, in the embodiment, the total width of the bridge cross section is reduced from 52.5m to 45m. The non-motor vehicle lane driving panel 3 is arranged close to the bottom inside the wind cone, compared with the case of being located on the bridge surface, the elevation of the non-motor vehicle lane is reduced, the longitudinal section of the non-motor vehicle lane is optimized, the non-motor vehicle riding traffic function can be realized while the total length of the bridge is reduced, and the economic performance is good, in the embodiment, the elevation of the non-motor vehicle lane is reduced by 3.6m.

[0058] It should be noted that the application described in detail can have various transformed and modified embodiments, and is not limited to the specific examples of the above-described embodiments. The above-described embodiments are only used to illustrate the application, but not to limit the application. In general, the protection scope of the application should include those transformations or substitutions and modifications which are obvious to those skilled in the art.

Claims

1. A bridge air nozzle structure with non-motorized vehicles passing through it, the bridge air nozzle structure is arranged on both sides of the steel box main beam, characterized in that: The bridge wind nozzle structure includes an outer steel plate, a diaphragm, and a driving panel. The diaphragm is provided with a hole that passes through the entire bridge. The driving panel is arranged at the lower part of the hole to realize the function of passing non-motor vehicles. The outer steel plate includes an upper steel plate, a lower steel plate, a top steel plate, a bottom steel plate, an upper steel plate longitudinal stiffening rib, a lower steel plate longitudinal stiffening rib, a top steel plate longitudinal stiffening rib, and a bottom steel plate longitudinal stiffening rib. The upper steel plate, the lower steel plate, the top steel plate, and the bottom steel plate form the facade of the wind nozzle. The upper steel plate and the lower steel plate are both inclined relative to the transverse direction of the bridge. The lower side of the upper steel plate is connected to the upper side of the lower steel plate. The angle between the upper steel plate and the lower steel plate is 60~ 90°, one side of the top steel plate is connected to the upper side of the upper steel plate, and one side of the bottom steel plate is connected to the lower side of the lower steel plate; the diaphragm includes a diaphragm web and annular stiffening ribs, the diaphragm web is provided with holes, and annular stiffening ribs are provided along the holes; multiple diaphragms are distributed at equal intervals along the bridge and correspond one to one with multiple diaphragms of the steel box main beam. The shape of each diaphragm matches the cross-sectional shape of the wind nozzle, and the side of the diaphragm is aligned with the inner side of the upper steel plate, the lower steel plate, the top steel plate, the bottom steel plate, and the steel box The outer side surface of the outer web of the main beam is welded and connected, and a plurality of window pane openings are distributed along the bridge direction on the upper steel plate and the lower steel plate. The window pane openings on the upper steel plate are provided with closed transparent window panes, and the window pane openings on the lower steel plate are provided with closed transparent window panes and semi-open transparent window panes. The area ratio of the closed transparent window panes on the upper steel plate to the window panes of the upper steel plate is 30%, the area ratio of the closed transparent window panes on the lower steel plate to the window panes of the lower steel plate is 15%, and the area ratio of the semi-open transparent window panes on the lower steel plate to the window panes of the lower steel plate is 15%.

2. The bridge air nozzle structure for non-motorized vehicles according to claim 1 is characterized in that: The inner side surfaces of the upper steel plate and the lower steel plate are both provided with a plurality of pane annular stiffening ribs corresponding to the plurality of pane openings, and each pane annular stiffening rib is arranged around the corresponding pane opening.

3. The bridge air nozzle structure for non-motorized vehicles according to claim 1 is characterized in that: The semi-open transparent window pane opens toward the inside of the air nozzle, and the opening angle is limited and fixed by a limiting device.

4. The bridge air nozzle structure for non-motorized vehicles according to claim 3 is characterized in that: The opening angle range of the semi-open transparent window pane is 15 to 45 degrees.

5. The bridge air nozzle structure for non-motorized vehicles according to claim 1, characterized in that: The closed transparent pane and the semi-open transparent pane are both acrylic panes.

6. The bridge air nozzle structure for non-motorized vehicles according to claim 1, characterized in that: The driving panel includes a structural layer, a pavement layer, and a driving lane railing. The structural layer is installed at the bottom of the annular stiffening rib of the transverse diaphragm, the pavement layer is arranged on the structural layer, and driving lane railings are erected on both sides of the structural layer in a transverse direction.

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