A continuous rigid frame bridge structure across a river with people passing inside the box beam

Abstract

The present invention provides a continuous rigid frame bridge structure across a river for pedestrians and non-motorized vehicles to pass through the box girder, comprising a box girder as a bridge span structure, bridge piers, a pedestrian compartment, a non-motorized vehicle compartment, a transverse middle partition and a vertical partition wall. The top surface of the box girder serves as a driving lane for motor vehicles; the pedestrian compartment and the non-motorized vehicle compartment are located inside the box girder, the vertical partition wall separates the pedestrian compartment from the non-motorized vehicle compartment, and divides the transverse middle partition into a pedestrian slab and a non-motorized vehicle slab. The present invention uses the top surface of the box girder as a driving lane for motor vehicles, and arranges the pedestrian and non-motorized vehicle compartments inside the box girder, thereby reducing the lateral width of the bridge deck and reducing the construction cost. At the same time, pedestrians and non-motorized vehicle compartments pass through the box girder, which can realize the connection between the slow-moving system on both sides of the river bank and the slow-moving system inside the bridge. Pedestrians have structures to shelter them from rain and wind when crossing the river, and the traffic conditions are good. One object can be used for multiple purposes, achieving multiple goals at one stroke, and it is worthy of large-scale promotion.

Description

Technical Field

[0001] The invention belongs to the technical field of municipal engineering, and in particular relates to a continuous rigid frame bridge structure across a river in which people do not pass through the box beam. Background Art

[0002] Roads crossing rivers usually use bridges or tunnels. When using bridges to cross rivers, it is generally necessary to consider the issue of pedestrians and non-motorized vehicles crossing the river with the bridge. The current conventional practice is to arrange pedestrian and non-motorized vehicle lanes on both sides of the bridge, which increases the horizontal width of the bridge, increases the construction cost, and is less economical. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a continuous rigid frame bridge structure across the river for pedestrians and non-motor vehicles to pass inside the box girder, aiming to solve the problems of high bridge engineering cost, poor economy and poor aesthetics when pedestrians and non-motor vehicles cross the river on the bridge in the prior art.

[0004] The present invention is implemented as follows: a continuous rigid frame bridge structure across a river in which people and non-motor vehicles pass inside a box girder, which includes a box girder as a bridge span structure, a pier, a pedestrian compartment, a non-motor vehicle lane compartment, a transverse middle partition and a vertical partition wall; the top surface of the box girder serves as a driving lane for motor vehicles, the bottom of the box girder is rigidly connected to the top of the pier, the pedestrian compartment and the non-motor vehicle lane compartment are located inside the box girder, the vertical partition wall isolates the pedestrian compartment from the non-motor vehicle lane compartment, and divides the transverse middle partition into a pedestrian slab and a non-motor vehicle lane slab.

[0005] Furthermore, the box girder is a prestressed reinforced concrete box girder.

[0006] Furthermore, the vertical partition wall is an ordinary reinforced concrete fireproof partition wall, which divides the box girder horizontally into two compartments, each compartment is an independent fire partition, and the two compartments are the sidewalk compartment and the non-motorized vehicle lane compartment, respectively. The vertical partition wall is 0.15m to 0.2m thick.

[0007] Furthermore, a fire door is provided on the vertical partition wall every 200m to 300m to serve as an escape passage for pedestrians or non-motor vehicles to another cabin when a fire occurs in a single cabin.

[0008] Furthermore, the transverse center partition adopts an ordinary reinforced concrete structure with a thickness of 0.15m to 0.2m; the transverse center partition is parallel to the top surface of the box beam, and the net height from the plate surface of the transverse center partition to the bottom of the upper flange of the box beam is not less than 2.5m.

[0009] Furthermore, a plurality of circular holes for sightseeing are arranged at a certain interval in the middle of the webs on both sides of the box girder, and the opening positions of the circular holes avoid the prestressed steel bundles at the webs. The plurality of circular holes form an irregular opening effect in the longitudinal direction of the box girder to increase the aesthetics of the structure. The webs on both sides of the box girder are correspondingly provided with reinforcing steel bars at the circular holes.

[0010] Furthermore, the plurality of circular holes include ventilation holes, lighting holes and viewing holes; the ventilation holes and viewing holes also serve as lighting holes, high-strength glass is installed at the viewing holes and lighting holes, the ventilation holes shall not be closed, and a protective net is set at the outside of the ventilation holes to prevent pedestrians from falling into rivers.

[0011] Furthermore, exhaust fans for emergency smoke exhaust in case of fire inside the box girder are installed at regular intervals at the ventilation holes.

[0012] Furthermore, lighting fixtures for nighttime lighting are installed on the tops of the pedestrian lane cabin and the non-motorized vehicle lane cabin.

[0013] Furthermore, the box girder is provided with connecting passages connected to the sidewalk cabin and the non-motorized vehicle lane cabin at the abutment ends near the two banks, so as to facilitate pedestrians and non-motorized vehicles on both sides of the road to enter the sidewalk cabin and the non-motorized vehicle lane cabin, thereby realizing the connection between the river bank slow-moving system and the cross-river slow-moving system in the bridge.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The cross-river continuous rigid frame bridge structure of the present invention uses the top surface of the box beam as a driving lane for motor vehicles, and arranges pedestrian and non-motor vehicle lanes in the box beam, thereby reducing the lateral width of the bridge deck and reducing the engineering cost. At the same time, pedestrians and non-motor vehicle lanes pass in the box beam, and there are structures above to shelter from rain and wind, so the traffic conditions are good, one object has multiple uses, and multiple goals are achieved at one stroke, which is worthy of large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic elevation structure diagram of a continuous rigid frame bridge structure across a river in which people do not pass inside the box girder provided by an embodiment of the present invention;

[0017] Figure 2 yes Figure 1 A top view schematic diagram of a continuous rigid frame bridge structure across a river is shown;

[0018] Figure 3 is along Figure 1 The schematic cross-sectional view of the AA section of the continuous rigid frame bridge structure across the river is shown;

[0019] Figure 4 is along Figure 1 A schematic cross-sectional view of the BB section of the continuous rigid frame bridge structure across the river is shown. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figures 1 to 4 , showing a continuous rigid frame bridge structure across a river provided by this embodiment, in which people do not pass inside the box girder, which includes a box girder 1 as a bridge span structure, piers 2, a sidewalk cabin 3, a non-motorized vehicle lane cabin 4, a transverse middle partition 5 and a vertical partition wall 6.

[0023] The top surface of the box girder 1 is used as a driving lane 10 for motor vehicles, and the bottom of the box girder 1 is rigidly connected to the top of the pier 2. The pedestrian compartment 3 and the non-motorized vehicle compartment 4 are located inside the box girder 1. The vertical partition wall 6 separates the pedestrian compartment 3 from the non-motorized vehicle compartment 4, and divides the transverse partition 5 into a pedestrian slab 31 and a non-motorized vehicle slab 41.

[0024] In this embodiment, the box beam 1 is a prestressed reinforced concrete box beam. The vertical partition wall 6 is an ordinary reinforced concrete fireproof partition wall, which divides the box beam 1 into two compartments horizontally, each compartment is an independent fire partition, and the two compartments are the pedestrian compartment 3 and the non-motorized vehicle lane compartment 4, respectively. The vertical partition wall 6 is 0.15m to 0.2m thick.

[0025] The vertical partition wall 6 is provided with a fire door every 200m to 300m to serve as an escape passage for pedestrians or non-motor vehicles to another cabin when a fire occurs in a single cabin.

[0026] The above-mentioned transverse middle partition 5 adopts ordinary reinforced concrete structure, and its thickness is 0.15m~0.2m; the transverse middle partition 5 is parallel to the top surface of the box beam 1, and the net height from the plate surface of the transverse middle partition 5 to the bottom of the upper flange of the box beam 1 is not less than 2.5m.

[0027] In this embodiment, the horizontal middle partition plate 5 and the vertical partition wall 6 are perpendicular to each other in three-dimensional space, and their horizontal cross-sections form a cross shape at a higher position in the vertical space and a T shape at a lower position in the vertical space.

[0028] A plurality of circular holes 11 are arranged at a certain interval in the middle of the webs on both sides of the box beam 1. The opening positions of the circular holes 11 avoid the prestressed steel strands 12 at the webs. The plurality of circular holes 11 form an irregular opening effect in the longitudinal direction of the box beam 1 to increase the aesthetics of the structure.

[0029] The plurality of circular holes 11 include ventilation holes, lighting holes and viewing holes. The ventilation holes and viewing holes also serve as lighting holes. High-strength glass is installed at the viewing holes and lighting holes. The ventilation holes shall not be closed. A protective net is arranged outside the ventilation holes to prevent pedestrians from falling into the river.

[0030] Exhaust fans for emergency smoke exhaust in case of fire inside the box girder 1 are installed at regular intervals at the ventilation holes.

[0031] Lighting fixtures for nighttime lighting are installed on the tops of the pedestrian lane cabin 3 and the non-motorized vehicle lane cabin 4 .

[0032] The box girder 1 is provided with connecting passages connected to the pedestrian cabin 3 and the non-motor vehicle lane cabin 4 at the abutment ends near the two banks, so as to facilitate pedestrians and non-motor vehicles on both sides of the road to enter the pedestrian cabin 3 and the non-motor vehicle lane cabin 4, thereby realizing the connection between the river bank slow-moving system and the cross-river slow-moving system in the bridge.

[0033] The cross-river continuous rigid frame bridge structure of this embodiment uses the top surface of the box beam 1 as a driving lane for motor vehicles, and arranges the pedestrian and non-motor vehicle lanes inside the box beam 1, thereby reducing the lateral width of the bridge deck and reducing the construction cost. At the same time, pedestrians and non-motor vehicle lanes pass through the box beam 1, and there are structures above to shelter from rain and wind, so the traffic conditions are good, one object has multiple uses, and multiple goals are achieved at one stroke, which is worthy of large-scale promotion.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuous rigid frame bridge structure across a river where people do not pass through the box girder, characterized in that: The invention comprises a box girder as a bridge span structure, a pier, a pedestrian compartment, a non-motor vehicle lane compartment, a transverse middle partition and a vertical partition wall; the top surface of the box girder is used as a driving lane for motor vehicles, the bottom of the box girder is rigidly connected to the top of the pier, the pedestrian compartment and the non-motor vehicle lane compartment are located in the box girder, the vertical partition wall isolates the pedestrian compartment from the non-motor vehicle lane compartment, and divides the transverse middle partition into a pedestrian slab and a non-motor vehicle lane slab; the vertical partition wall is an ordinary reinforced concrete fireproof partition wall, which divides the box girder horizontally into two compartments, each compartment is an independent fire partition, the two compartments are the pedestrian compartment and the non-motor vehicle lane compartment, and the vertical partition wall is 0.15m~0.2m thick; the transverse middle partition adopts an ordinary reinforced concrete structure, and its thickness is 0.15m~0.2m; the transverse middle partition is parallel to the top surface of the box girder, and the net height from the plate surface of the transverse middle partition to the bottom of the upper flange of the box girder is not less than 2.5m.

2. The cross-river continuous rigid frame bridge structure according to claim 1, characterized in that: The box girder is a prestressed reinforced concrete box girder.

3. The cross-river continuous rigid frame bridge structure according to claim 1, characterized in that: The vertical partition wall is provided with a fire door every 200m to 300m to serve as an escape passage for pedestrians or non-motor vehicles to another cabin when a fire occurs in a single cabin.

4. The cross-river continuous rigid frame bridge structure according to claim 1, characterized in that: A plurality of circular holes for sightseeing are arranged at a certain interval in the middle of the webs on both sides of the box girder, the opening positions of the circular holes avoid the prestressed steel strands at the webs, and the plurality of circular holes form an irregular opening effect in the longitudinal direction of the box girder to increase the aesthetics of the structure. The webs on both sides of the box girder are correspondingly provided with reinforcing steel bars at the circular holes.

5. The cross-river continuous rigid frame bridge structure according to claim 4, characterized in that: The circular holes include ventilation holes, lighting holes and viewing holes. The ventilation holes and viewing holes also serve as lighting holes. High-strength glass is installed at the viewing holes and lighting holes. The ventilation holes shall not be closed. A protective net is set at the outside of the ventilation holes to prevent pedestrians from falling into rivers.

6. The cross-river continuous rigid frame bridge structure according to claim 5, characterized in that: Exhaust fans for emergency smoke exhaust when a fire occurs inside the box girder are installed at regular intervals at the ventilation holes.

7. The cross-river continuous rigid frame bridge structure according to claim 1, characterized in that: Lighting fixtures for nighttime lighting are installed on the tops of the sidewalk cabin and the non-motorized vehicle lane cabin.

8. The cross-river continuous rigid frame bridge structure according to claim 1, characterized in that: The box girder is provided with connecting passages connected to the pedestrian cabin and the non-motor vehicle lane cabin at the abutment ends near the two banks, so as to facilitate pedestrians and non-motor vehicles on both sides of the road to enter the pedestrian cabin and the non-motor vehicle lane cabin, thereby realizing the connection between the river bank slow-moving system and the cross-river slow-moving system in the bridge.

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