Landscape arch bridge connected with riverside footpath

Abstract

The utility model discloses a landscape arch bridge connected with a riverside footpath, belongs to the field of bridge engineering, and solves the problem that the riverside footpaths on two banks are not communicated. The bridge abutment structure comprises an arch rib, on-arch box girders, cast-in-place slab girders and bridge abutments, the on-arch box girders are arranged on the two sides of the top of the arch rib, an arch crown leveling layer is arranged between the on-arch box girders on the two sides, the bridge abutments are located at the two ends of the arch rib, each bridge abutment comprises a pile foundation, a bearing platform and an abutment body which are sequentially arranged from bottom to top, and arch feet of the arch rib are connected to the bearing platform. The cast-in-place slab girder is arranged between the on-arch box girder and the abutment body, and the cast-in-place slab girder, the on-arch box girder and the arch crown leveling layer jointly form a bridge floor; the riverside footpath transversely penetrates through the space below the cast-in-place slab beam, the riverside footpath is communicated with the bridge deck sidewalk through the landscape footpaths, and the landscape footpaths are arranged on the two sides of the top face of the arch rib. The landscape footpath is arranged on the surface of the arch rib, citizens can conveniently reach the riverside footpath of the opposite bank through the landscape footpath, and interconnection and intercommunication between the waterfront space and the external space are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge engineering field, concretely relates to a landscape arch bridge connected with riverside walkway. BACKGROUND

[0002] The city waterfront zone has natural water surface, and it is the most lively place in the city, and its value has been fully recognized in the past few decades. The waterfront development as the opportunity of city renaissance brings huge comprehensive benefits of environment, society and economy, and in-depth analysis of its internal motive force, the biggest advantage of the waterfront is rich in "water affinity" elements, that is, the dependence and closeness of people to water make the waterfront become the place that people yearn for and gather. The riverside walkway as the most direct water platform has been constructed on a large scale in the past ten years, and becomes an important entertainment place for city residents to walk and jog. The municipal bridge across the river is an important node on the riverside walkway.

[0003] Because the municipal and water affairs belong to different administrative departments, the river-crossing bridge usually does not fully consider the function of the riverside walkway under the bridge in the design and construction process, and more than that, it becomes the breakpoint of the walkway. Through investigation, it is found that there are mainly the following two situations. First, the height and width under the bridge are insufficient, the riverside walkway is interrupted under the bridge, and the longitudinal traffic is limited. Second, the bridge does not consider the connection between the riverside walkways on both sides of the river and the demand of going up and down the bridge, and the public needs to turn back and walk around from the bridge head, which cannot realize the interconnection between the waterfront space and the external space. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims to provide a landscape arch bridge connected with riverside walkway, so as to solve the problems that the riverside walkway is interrupted by the bridge and the riverside walkways on both sides are not connected.

[0005] The technical scheme of the utility model is: a landscape arch bridge connected with riverside walkway, comprising arch rib, arch box girder, cast-in-place slab beam and abutment, the arch box girder is arranged at the top of both sides of the arch rib, the arch top leveling layer is arranged between the arch box girders on both sides, the abutment is located at both ends of the arch rib, the abutment comprises pile foundation, bearing platform and abutment body arranged in sequence from bottom to top, the arch foot of the arch rib is connected to the bearing platform, the cast-in-place slab beam is arranged between the arch box girder and the abutment body, and the cast-in-place slab beam, the arch box girder and the arch top leveling layer jointly form the bridge deck; the riverside walkway crosses the space below the cast-in-place slab beam, the riverside walkway and the bridge deck sidewalk are connected through the landscape walkway, and the landscape walkway is arranged on both sides of the top surface of the arch rib.

[0006] As a further improvement of the utility model, the cast-in-place slab beam is connected to the box girder and the abutment body through the support at both ends respectively.

[0007] As a further improvement of the utility model, the decorative plate is arranged on the vertical surface of the cast-in-place slab beam.

[0008] As a further improvement of the utility model, landscape railings are arranged on both sides of the bridge deck.

[0009] The utility model has the advantages of:

[0010] 1. The utility model discloses a landscape walkway arranged on the surface of the arch rib, solves the problem that the riverside walkways on both banks are not connected, and the citizens need to turn back and walk around from the bridge head, and the citizens can conveniently reach the riverside walkway on the opposite bank through the landscape walkway, which is more convenient for the citizens to carry out water contact activities and realizes the interconnection of the waterfront space and the external space.

[0011] 2. The utility model discloses that the arch bridge side span adopts the cast-in-place slab beam supported on the arch rib, reserves space for the riverside walkway to pass under the bridge, realizes the longitudinal penetration of the riverside walkway, avoids being interrupted by the bridge, and improves the longitudinal smoothness. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the plane arrangement drawing of the utility model;

[0013] Figure 2 is the A-A view in Figure 1 ;

[0014] Figure 3 is the B-B view in Figure 1 ;

[0015] Figure 4 is the C-C view in Figure 2 ;

[0016] Figure 5 is the D-D view in Figure 2 ;

[0017] Figure 6 is the E-E view in Figure 2 .

[0018] In the drawing: 1, arch rib; 2, arch box girder; 3, cast-in-place slab beam; 4, decorative plate; 5, arch top leveling layer; 6, abutment; 61, abutment body; 62, bearing platform; 63, ear wall; 64, pile foundation; 7, landscape walkway; 8, support; 9, landscape railing; 10, riverside walkway. DETAILED DESCRIPTION

[0019] The utility model will be described in detail in combination with the drawings.

[0020] For example, Figures 1-6As shown, a landscape arch bridge connected with riverside promenade includes arch rib 1, arch box girder 2, cast-in-place slab beam 3 and abutment 6, the arch box girder 2 is arranged on both sides of the top of the arch rib 1, the arch top leveling layer 5 is arranged between the two arch box girders 2 on both sides, the abutment 6 is located at both ends of the arch rib 1, the abutment 6 includes pile foundation 64, bearing platform 62 and abutment body 61 arranged in sequence from bottom to top, the ear walls 63 are arranged on both sides of the upper end of the abutment body 61, the arch foot of the arch rib 1 is connected to the bearing platform 62, the cast-in-place slab beam 3 is arranged between the arch box girder 2 and the abutment body 61, the cast-in-place slab beam 3, the arch box girder 2 and the arch top leveling layer 5 jointly constitute the bridge deck; the riverside promenade 10 crosses the space below the cast-in-place slab beam 3, the riverside promenade 10 is connected with the bridge deck sidewalk through the landscape walkway 7, and the landscape walkway 7 is arranged on both sides of the top surface of the arch rib 1.

[0021] The two ends of the cast-in-place slab beam 3 are connected to the box girder 2 and the abutment body 61 through the supports 8 respectively.

[0022] The decorative plate 4 is arranged on the vertical surface of the cast-in-place slab beam 3. The landscape railings 9 are arranged on both sides of the bridge deck.

[0023] Embodiment 1,

[0024] The bridge adopts the deck type beam-arch combined structure, the arch rib 1 adopts the reinforced concrete hingeless arch, the cast-in-place slab beam 3 serves as the side span main beam, and the arch rib 1 and the arch box girder 2 combined structure serve as the midspan.

[0025] The arch rib 1 adopts the reinforced concrete box arch, the material is C40 concrete, and the whole is arranged. The arch axis adopts a circular curve, the curve length is 33.93 m, and the curve radius is 22.946 m. The arch rib 1 span is 30.92 m, the rise is 5.99 m, and the rise-span ratio is 5.16. The arch rib 1 is 27.5 m wide and 0.9 m high, has a single-box six-chamber box section, and extends the road section 3.0 m on both sides of the transverse bridge direction. The top and bottom plates are 0.2 m thick, and the webs are 0.6 m thick. The arch rib 1 is engraved with a 10 cm deep groove on the outside. The arch top is not provided with a transverse slope. The arch rib 1 is longitudinally provided with six cross beams, the cross beam at the arch foot is 1.0 m thick, the cross beam at the side beam support is 1.2 m thick, and the cross beam at the arch top box girder support point is 0.4 m thick.

[0026] An arch box girder 2 is arranged on each side of the arch top in the bridge longitudinal direction, which adopts a reinforced concrete box girder to reduce the structure self weight and adopts C40 concrete. The single box girder is 4.3 m long in the longitudinal bridge direction and 21.5 m wide in the transverse bridge direction. The side wall is 0.4 m thick in the longitudinal bridge direction, the side wall is 0.3 m thick in the transverse bridge direction, the top plate is 0.25 m thick, and the top plate is provided with a 2% transverse slope outwardly. The box girder top plate is flush with the side span plate girder top surface, and the bridge deck is continuous through the embedded steel bars.

[0027] Two box girder 2 are arranged on both sides of the arch crown along the bridge direction, which are made of reinforced concrete to reduce the dead weight of the structure and C40 concrete. The length of a single box girder 2 along the longitudinal direction is 4.3 m and the width along the transverse direction is 21.5 m. The thickness of the side wall along the bridge direction is 0.4 m, the thickness of the side wall along the transverse direction is 0.3 m, the thickness of the top plate is 0.25 m, and the top plate is provided with a 2% transverse slope outward. The top surface of the box girder 2 is flush with the top surface of the cast-in-place slab beam 3, and the bridge deck is continuous through the embedded steel bars. The side surface of the box girder 2 is engraved with a 5 cm deep decorative groove.

[0028] The cast-in-place slab beam 3 is a reinforced concrete structure and uses C40 concrete. The span of the cast-in-place slab beam 3 is 20 m, the beam height is 1.2 m, the transverse width is 21.2 m, and the whole width is arranged. The cast-in-place slab beam 3 is provided with Ф70 cm GBF high-strength thin-walled pipes as hollow inner molds along the longitudinal direction with a spacing of 90 cm, and a 100 cm transverse beam is arranged at the beam end. The cast-in-place slab beam 3 crosses the riverside walkway 10 with a traffic clearance of not less than 2.5 m. The cast-in-place slab beam 3 is provided with a plate type rubber support 8 at the lower part, and the beam bottom is leveled by a leveling steel plate.

[0029] At the top of the arch rib 1, an arch crown leveling layer 5 is poured within a range of 8.4 m along the longitudinal direction to form a 2% transverse slope. In order to reduce the dead weight of the structure as much as possible, two layers of PP pipes can be arranged, the lower layer of PP pipes is arranged on the arch crown, the minimum thickness of the concrete leveling layer on the top of the upper layer of PP pipes is 10 cm, and the minimum net distance between the two layers of PP pipes is 6 cm. Steel mesh is arranged at the bottom and top of the PP pipes and between the two layers of PP pipes.

[0030] The abutment 6 is a one-letter structure and is arranged in the whole width with a width of 21.5 m. The abutment body 61 is 1.2-2.0 m thick, and a 2.0% bidirectional slope is arranged on the top of the back wall. The ear wall 63 is 4.5 m long and is arranged on both sides of the abutment back to constrain the soil body of the abutment back. The size of the pile cap 62 is 14.2 (length) x 28.5 (width) x 2.5 (height) m, the arch foot of the arch rib 1 is inserted into the front end of the pile cap 62, and the joint between the pile cap 62 and the arch rib 1 is designed as a vertical slope surface of the arch rib 1, which is used as an arch seat. Ten Ф1.8 m pile foundations 64 are arranged under the pile cap 62, which are arranged in double rows with a longitudinal pile spacing of 11.2 m and a transverse pile spacing of 5.75 m.

[0031] A 3 m wide landscape walkway 7 is arranged on both sides of the bridge along the longitudinal direction, which is used for pedestrians to go up and down the bridge along the arch rib 1. The landscape walkway 7 is arranged on the top surface of the arch rib 1 in the range where the tangent slope near the arch foot is greater than 1:2, which is leveled to a slope rate of 1:2 by a leveling layer, and the leveling layer uses PP pipes as inner membranes to reduce the dead weight of the structure. A 5.7 m long rest platform is arranged at the arch crown, and the platform is connected to the bridge sidewalk through three steps. The single side landscape walkway is 40 m long, of which the ladder is 31 m long, and the approach on both sides is 4.5 m long. The maximum step height of the ladder is 0.15 m, and the minimum step depth is 0.3 m.

[0032] The cast-in-place slab beam 3 is provided with a 0.15m-thick decorative plate 4 which is equal in length to the cast-in-place slab beam 3 and has a height of 1.25-1.72m. The decorative plate 4 is provided with a 0.05m-deep groove on the outer side, and the inner side is integrally formed with the cast-in-place slab beam 3 through pre-embedded steel bars. The decorative plate 4 is smoothly connected with the side surface of the arch box girder 2 to form an integral pattern. The decorative plate 4 is made of C40 concrete.

[0033] The above combination of the beam and the arch forms a "spread-wing shape", overcomes the heavy appearance of the traditional through-type arch bridge, and further increases the landscape modeling of the bridge through the landscape railings 9 and improves the urban landscape.

[0034] The arch bridge can not only cross a river channel and be connected with municipal roads on both banks, but also realize interconnection with a riverside walkway, and has a wide application prospect.

Claims

1. A landscape arch bridge connected to a riverside walkway, characterized by: The arch rib (1), the arch box girder (2), the cast-in-place slab beam (3) and the abutment (6) are included, the arch box girder (2) is arranged on the top of the arch rib (1) on both sides, the arch top leveling layer (5) is arranged between the arch box girders (2) on both sides, the abutment (6) is located at both ends of the arch rib (1), the abutment (6) includes the pile foundation (64), the bearing platform (62) and the abutment body (61) arranged in sequence from bottom to top, the arch foot of the arch rib (1) is connected to the bearing platform (62), the cast-in-place slab beam (3) is arranged between the arch box girder (2) and the abutment body (61), the cast-in-place slab beam (3), the arch box girder (2) and the arch top leveling layer (5) jointly constitute the bridge deck; The riverside walkway (10) crosses the space below the cast-in-place slab beam (3), the riverside walkway (10) and the bridge deck sidewalk are communicated through the landscape walkway (7), and the landscape walkway (7) is arranged on both sides of the top surface of the arch rib (1).

2. The landscape arch bridge connected with riverside promenade according to claim 1, characterized in that: The cast-in-place slab beam (3) is connected to the box girder (2) and the abutment body (61) through the support (8) at both ends respectively.

3. The landscape arch bridge connected with riverside walkway according to claim 1 or 2, characterized in that: The decorative plate (4) is arranged on the elevation of the cast-in-place slab beam (3).

4. The landscape arch bridge connected with riverside promenade according to claim 3, characterized in that: The landscape railings (9) are arranged on both sides of the bridge deck. The cast-in-place slab beam (3) is connected to the box girder (2) and the abutment body (61) through the support (8) at both ends respectively. The decorative plate (4) is arranged on the elevation of the cast-in-place slab beam (3). The landscape railings (9) are arranged on both sides of the bridge deck.

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