CN218405106U - Box culvert structure for crossing flood drainage channel - Google Patents

Abstract

The utility model discloses a box culvert structure spanning a flood discharge channel, which comprises a culvert body and a box culvert foundation arranged at the bottom of the culvert body. The inner end, outer end and outer end of the top plate of the box culvert are provided with an inner end wall, an outer end wall and an outer end wall one by one, so that the top of the box culvert is divided into a road part between the inner end wall and the outer end wall and the The green belt between the outer end wall and the outer end wall; both sides of the culvert body are filled with sand and gravel; the top of the box culvert roof is paved with a road structure layer; the inner and outer ends of the two box culvert side walls are connected Wing wall; the outer end faces of the two box culvert side walls each extend a hole retaining wall outward, and the two hole retaining walls are arranged in a figure-eight shape; the box culvert foundation includes a number of pipe piles with pile caps, filled in pipe piles The gravel between the pile caps, the gravel cushion laid on the top of the pile cap of the pipe pile and the gravel with two layers of geogrid sandwiched in between, and the plain concrete layer laid on the gravel cushion. The utility model can reduce uneven settlement.

Description

A box culvert structure spanning the flood discharge channel

technical field

The utility model relates to a box culvert structure spanning a flood discharge canal.

Background technique

In the process of building a new industrial park along the coast, it is also necessary to build roads serving regional traffic in the industrial park. Problems such as crossing rivers and canals may be encountered in road construction, so box culverts are often used to cross rivers and canals. Engineers always hope that the box culvert can be constructed more conveniently and at a lower cost while ensuring the structural strength. Box culverts are divided into two structural types: open culverts and hidden culverts. Among them, hidden culverts have simple structure, convenient construction, and good mechanical performance. They are currently the mainstream type of box culverts across rivers and canals. Since the foundation of the seaside is basically a soft soil foundation, when the box culvert is built on the soft soil foundation, it must ensure sufficient overall strength and stability, as well as high reliability and durability, so as to ensure that it can be used in the natural environment. , intact for a long time without damage. In addition, the current box culverts still have deficiencies such as smooth tops, no rhythmic changes, and rigid shapes.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art and provide a box culvert structure spanning the flood discharge channel, which can effectively reduce the uneven settlement of the culvert body and beautify the box culvert.

The purpose of this utility model is achieved in the following way: a box culvert structure spanning the flood discharge channel, including a culvert body connecting the outer hole with the external water system, the inner hole connected with the internal drainage ditch in the area, and the box at the bottom of the culvert. The culvert foundation, the culvert body is composed of a box culvert top plate, a box culvert bottom plate and two box culvert side walls; wherein,

The inner end, the outer end and the outer end of the box culvert roof are provided with an inner end wall, an outer end wall and an outer end wall one by one, so that the top of the box culvert is divided into an area between the inner end wall and the outer end wall. The road part and the green belt between the outer end wall and the outer end wall; the inner side of the road part is a sidewalk, and the rest is a two-way single-lane roadway;

Both sides of the culvert body are backfilled with sand and gravel; the top of the box culvert roof is paved with a road structure layer;

The inner and outer ends of the two box culvert side walls are connected to the wing wall; the outer end faces of the two box culvert side walls respectively extend outward a piece of opening retaining wall, and the two opening retaining walls are arranged in a figure-eight shape. The bottom between the opening retaining walls is paved with the outer end opening bottom plate connected to the outer end surface of the box culvert bottom plate;

The inner end surface of the bottom plate of the box culvert extends forward to the bottom plate of the inner hole;

The box culvert foundation includes a plurality of pipe piles provided with pile caps, sand and gravel filled between the pile caps of the pipe piles, laid on the top of the pipe pile caps and sand and gravel, and sandwiching two layers of geogrids The gravel cushion and the plain concrete layer laid on the gravel cushion.

The above-mentioned box culvert structure across the flood discharge channel, wherein, a reinforced concrete slab is respectively arranged on the top of the gravel on both sides of the box culvert roof corresponding to the two-way single-vehicle roadway through a gravel cushion, and then a reinforced concrete slab is placed on the reinforced concrete slab. Pave the road structure layer above.

The above-mentioned box culvert structure spanning the flood discharge channel, wherein, the section of the opening retaining wall is a right-angled trapezoid, and the thickness and height of the opening retaining wall gradually decrease from inside to outside.

The above-mentioned box culvert structure spanning the flood discharge channel, wherein, the municipal pipeline is pre-buried in the green belt.

In the above box culvert structure spanning the flood discharge channel, railings are provided on the top of the inner end wall and the top of the outer end wall.

In the above-mentioned box culvert structure spanning the flood discharge channel, a plurality of pipe piles are arranged in a rectangular array, and the vertical spacing and the horizontal spacing are the same.

The box culvert structure spanning the flood drainage canal of the utility model has the following characteristics:

1) By setting the pipe pile foundation arranged in the whole hall, it can jointly bear the load of sand and gravel backfilled on both sides of the box culvert and the road load, so that the mechanical performance of the box culvert is good. The gravel cushion of the grid can effectively reduce the uneven settlement of the culvert body;

2) An external end wall is set on the top of the box culvert to form a road section and a green belt that are separated from each other, which not only ensures the safety of pedestrians on the box culvert, but also ensures the normal driving of vehicles, and can also lay covering soil on the green belt Layers, planting some trees or flowers, can not only purify the air, but also beautify the box culvert.

Description of drawings

Fig. 1 is the plane view of the box culvert structure across the flood discharge channel of the present utility model;

Fig. 2 is the elevation view of the box culvert structure across the flood discharge channel of the present utility model;

Fig. 3 is the sectional view of the box culvert structure across the flood discharge channel of the present utility model;

Fig. 4 is the sectional view of the inner end opening of the box culvert structure across the flood discharge channel of the present utility model;

Fig. 5 is a cross-sectional view of the outer end opening of the box culvert structure spanning the flood discharge channel of the present invention.

Detailed ways

The utility model will be further described below in conjunction with accompanying drawing.

Please refer to Fig. 1 to Fig. 5, the box culvert structure spanning the flood discharge channel of the present utility model includes the culvert body 10 connecting the outer hole with the external water system, the inner hole connected with the internal drainage ditch in the area, and the bottom of the culvert 10 The box culvert foundation.

The culvert body 10 is rectangular and consists of a box culvert top plate 11, a box culvert bottom plate 12 and two box culvert side walls 13; the thickness of the box culvert top plate 11, the thickness of the box culvert bottom plate 12 and the thickness of the two box culvert side walls 13 are equal The internal length of the section of the culvert body is 4m, and the internal height is 3m; the culvert body 10 is provided with a settlement joint every 10m along the length direction, and each settlement joint is filled with a 3cm thick rubber waterstop.

The inner end, the outer end and the outer end of the box culvert top plate 11 are provided with an inner end wall 141, an outer end wall 142 and an outer end wall 143 with a thickness of 50 cm one by one, so that the top of the box culvert is separated into a wall located at the inner end wall. 141 to the outer end wall 142 and the green belt between the outer end wall 142 and the outer end wall 143, the municipal pipeline 30 is also pre-buried in the green belt; the inner side of the road part is a 3m wide sidewalk, and the rest It is a two-way single-carriageway with a width of 9m. Both the top of the inner end wall 141 and the top of the outer end wall 142 are provided with railings 140 .

Both sides of the culvert body 10 are backfilled with gravel 100, and the gravel 100 is backfilled symmetrically in horizontal layers and compacted with a vibratory roller, with a compaction degree of 96%; The horizontal backfill range of 2.9m, the horizontal backfill range of sand and gravel 100 from 2.9m up to 3.4m is 6m, and the horizontal backfill range of sand and gravel 100 from 3.4m up to 3.9m is 7m, so that the platform back of the box culvert It is stepped, which improves the stability of the stage back.

At the top of the gravel 100 on both sides of the box culvert top plate 11 corresponding to the two-way bicycle roadway, a reinforced concrete slab 102 with a width of 5m and a thickness of 30cm is set by a 15cm thick gravel cushion 101 respectively, and then the reinforced concrete slab is placed on the slab. Pave road structure layer 103 on 102 and on the box culvert roof 11 of the rest;

The inner and outer ends of the two box culvert side walls 13 are connected to a wing wall 15 with a width of 3 m and a thickness of 0.5 m, and an opening retaining wall 16 is extended outward on the outer end faces of the two box culvert side walls 13 respectively. The two opening retaining walls 16 are arranged in a figure-eight shape; the section of the opening retaining wall 16 is a right-angled trapezoid, and the thickness and height of the opening retaining wall 16 gradually decrease from the inside to the outside;

The bottom between the two opening retaining walls 16 is paved with the outer end surface of the box culvert bottom plate 12 and the outer end hole bottom plate 17 with a thickness of 30cm; the bottom of the outer end hole bottom plate 17 is also laid with a 10cm thick sandstone cushion 170.

The inner end surface of the box culvert bottom plate 12 extends forward a 5m long inner hole bottom plate 18 with a thickness of 30cm, and the bottom of the inner hole bottom plate 18 is also laid with a 10cm thick sandstone cushion 170.

The box culvert foundation includes a plurality of pipe piles 20 provided with pile caps 20a, sand and gravel 21 filled between the pile caps 20a of the pipe piles 20, sand and gravel laid on top of the pile caps 20a of the pipe piles 20 and on the sand and gravel 21 Cushion 22 and the plain concrete layer 23 laid on the gravel cushion 22; the pile diameter of the pipe pile 20 is 0.4m, and the plane of the pile cap 20a is a square whose side length is 120cm and the height of the pile cap 20a is 30cm; The pipe piles 20 are arranged in a rectangular array, and the longitudinal spacing and the horizontal spacing are 1.5m; the thickness of the plain concrete layer 23 is 10cm, and the width of the plain concrete layer 23 is 60cm larger than the width of the culvert body 10, and the two sides of the plain concrete layer 23 The sides are 30cm wide on both sides of the culvert body 10 in one-to-one correspondence. The thickness of the gravel cushion 22 is 50cm, and two layers of geogrids are interposed in the gravel cushion 22; the width of the gravel cushion 22 is 4.2cm larger than the width of the plain concrete layer 23, and the two sides of the gravel cushion 22 correspond one by one The ground width extends 2.1m from both sides of the plain concrete layer 23 .

The box culvert structure of the utility model spanning the flood discharge channel adopts the pipe pile foundation arranged all over the hall, which can jointly bear the backfill soil material load on the side of the box culvert and the road surface load, so that the box culvert has good mechanical performance and passes through the pipe piles below. The foundation is transmitted to the depth of the soil layer, avoiding the settlement of the soil layer under the box culvert under pressure.

The above embodiments are only for illustrating the utility model, rather than limiting the utility model. Those skilled in the art can also make various transformations or modifications without departing from the spirit and scope of the utility model. Therefore, all equivalent technical solutions should also belong to the category of the present utility model, and should be defined by each claim.

Claims (6)

1. A box culvert structure crossing a flood drainage channel comprises a culvert body and a box culvert foundation, wherein an outer end hole is connected with an external water system, an inner end hole is connected with a regional internal drainage ditch, and the culvert body is arranged at the bottom of the culvert body and consists of a box culvert top plate, a box culvert bottom plate and two box culvert side walls; it is characterized in that the preparation method is characterized in that,

the inner end, the outer end and the outer end of the box culvert top plate are correspondingly provided with an inner end wall, an outer end wall and an outer end wall one by one, so that the top of the box culvert is divided into a road part between the inner end wall and the outer end wall and a green belt between the outer end wall and the outer end wall; the inner side of the road part is a pavement, and the other part is a bidirectional single-vehicle pavement;

both sides of the culvert body are backfilled by sand gravel; paving a road structure layer on the top of the box culvert top plate;

the inner ends and the outer ends of the side walls of the two box culverts are connected with the wing walls; the outer end faces of the two box culvert side walls are respectively extended outwards to form a hole retaining wall, the two hole retaining walls are arranged in a splayed shape, and an outer end hole bottom plate connected with the outer end face of the box culvert bottom plate is paved at the bottom between the two hole retaining walls;

an inner end opening bottom plate extends forwards on the inner end surface of the box culvert bottom plate;

the box culvert foundation includes many tubular piles that are equipped with the pile cap, fills sand gravel between the pile cap of tubular pile, lays on the pile cap top of tubular pile and sand gravel and presss from both sides the gravel bed course in the middle of two-layer geogrid and lays the plain concrete layer on the gravel bed course.

2. The box culvert structure spanning flood discharge canals according to claim 1, wherein a reinforced concrete butt plate is arranged on the top of gravel stones on both sides of the box culvert top plate corresponding to the bidirectional bicycle lane through a gravel cushion layer, and a road structure layer is paved on the reinforced concrete butt plate.

3. The box culvert structure across flood discharge canals according to claim 1, wherein the cross section of the entrance retaining wall is in a right trapezoid shape, and the thickness and height of the entrance retaining wall gradually decrease from inside to outside.

4. The box culvert structure spanning flood discharge canals according to claim 1, wherein municipal pipes are embedded in the green belts.

5. A box culvert structure spanning flood drains according to claim 1, wherein railings are provided on both the top of the interior endwalls and the top of the exterior endwalls.

6. A box culvert structure across flood discharge canals according to claim 1, wherein a plurality of said pipe piles are arranged in a rectangular array with the same longitudinal and lateral spacing.

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