CN212866028U

CN212866028U - River course limit sewage pipe network combines sheet-like barricade arrangement structure of stake

Info

Publication number: CN212866028U
Application number: CN202021470979.6U
Authority: CN
Inventors: 彭望; 罗辉; 蒋敏; 冯云; 谭晓节; 梁允伟
Original assignee: Guangxi Road Construction Engineering Group Co Ltd
Current assignee: Guangxi Road Construction Engineering Group Co Ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-04-02
Anticipated expiration: 2030-07-23

Abstract

The river course side sewage pipe network is combined with a pile-plate type retaining wall arrangement structure, the pile-plate type retaining wall is positioned at the river course side, and the sewage pipe is embedded in backfill soil 2-3 meters away from the river bank side of the pile-plate type retaining wall; the pile-plate type retaining wall comprises a plurality of cast-in-place piles with lower parts embedded into soil layers, wherein the upper part of each cast-in-place pile bears a pier stud, and a soil retaining plate is fixed on the side surface of each pier stud; the height of the sewage pipe is higher than the design river line and lower than the elevation of the pier top. The utility model discloses be applied to arranging of the sewage pipe network that is close to the river course edge, can satisfy the sewage collection of building around the river bank, can also keep the side slope stability of weak riverbed ground, prevent that the side slope landslide from leading to the side slope warp the unstability, can also shrink the toe and reduce the earthwork volume, reach economy and stability concurrently.

Description

River course limit sewage pipe network combines sheet-like barricade arrangement structure of stake

Technical Field

The utility model belongs to the technical field of municipal works construction technique and specifically relates to a river course limit sewage pipe network combines stake plate-type barricade arrangement structure.

Background

Among municipal works and the environmental protection engineering at present, the barricade that sets up along the river course limit mainly uses gravity type concrete barricade as leading, utilizes wall body dead weight to resist soil body lateral pressure and reaches stable effect, protects the river course coastal, and construction convenience, and economic benefits is good. The sewage that produces in the building is discharged through the blow off pipe in being located near the bank of a river near the building, the sewer pipe network often need lay the bank of a river, when carrying out sewer pipe network construction to the heavy-duty retaining wall back of the body, because the weak ground bearing capacity of the bank of a river can not reach the design requirement, produce the subsidence easily, consequently need make the wall body at the road section of side slope unstability earlier and strut the back, then carry out the wall back of the body and backfill, just can carry out the earthwork excavation, carry out the sewer pipe network construction at last, prevent to appear collapsing in the work progress. In wall body supporting, the problem of water resistance of a steel sheet pile supporting steel sheet pile joint is usually solved by attention, and the steel sheet pile has smaller rigidity than a concrete retaining wall and is easy to cause larger deflection deformation after excavation. The steel sheet pile driving and pulling pile has large vibration noise, easily causes soil body movement, and has larger settlement for the road section foundation of which the periphery is a building, and the mode of laying the sewage pipes beside the river channel generates higher engineering temporary measures and longer construction period.

Disclosure of Invention

The utility model provides a river course limit sewage pipe network combines stake plate-type barricade arrangement structure is applied to the arrangement of the sewage pipe network that is close to the river course edge, can satisfy the river limit and collect the sewage of building on every side, can also keep the side slope stability of weak riverbed ground, prevents that the side slope landslide from leading to the side slope warp the unstability, can also shrink the slope foot and reduce the earthwork volume, reaches economy and stability concurrently.

The technical scheme of the utility model is realized like this:

the river course side sewage pipe network is combined with a pile-plate type retaining wall arrangement structure, the pile-plate type retaining wall is positioned at the river course side, and the sewage pipe is embedded in backfill soil 2-3 meters away from the river bank side of the pile-plate type retaining wall; the pile-plate type retaining wall comprises a plurality of cast-in-place piles with lower parts embedded into soil layers, wherein the upper part of each cast-in-place pile bears a pier stud, and a soil retaining plate is fixed on the side surface of each pier stud; the height of the sewage pipe is higher than the design river line and lower than the elevation of the pier top. The cast-in-place piles, the pier columns and the soil retaining plates are all made of C30 concrete, wherein the soil retaining plates are prefabricated plates, and the sewage pipes are reinforced concrete pipes; the pile-plate type retaining wall isolates the soil body beside the river channel from river water, the soil body beside the river channel is solid and stable, and the sewage pipe cannot be influenced by collapse due to soil body instability in the buried soil body.

The upper end of the cast-in-place pile is provided with a bearing platform, a pier stud is borne above the bearing platform, and the designed river line is 0.6 m higher than the bearing platform; the bearing platform can play the role of stably connecting the lower cast-in-place pile and the upper pier stud, and the overall structure stability of the pile plate type retaining wall is reinforced.

A crown beam is arranged above the pier stud to connect the pier stud and the pier stud; the whole row of pier studs are connected into a whole by the crown beam, and the stability of the whole structure of the pile-plate type retaining wall can be enhanced.

The retaining plate is provided with a plurality of water drainage holes, and the positions of the water drainage holes are all positioned above the designed riverbed line; the water drainage holes are used for draining rainwater and the like in the backfilled soil body into a river to keep the soil body dry and water content.

The backfill soil is soil-filled broken stone, and the material outside the backfill area can be original soil; the sand gravel has a good drainage effect, and rainwater is prevented from accumulating in the backfill area to influence soil layer stability.

The utility model discloses a construction steps includes:

(1) drilling and digging a filling hole: in order to protect the orifice and prevent the soil layer at the orifice from collapsing, water on the outer surface layer of the inner hole of the hole is isolated, the water level in the drilled hole is kept higher than the construction water level to stabilize the hole wall, and the water level in the drilled hole is used for fixing the pile position and guiding the drilled hole, and all the drilled piles are in an all-steel pile casing form; and after the drilling hole of the rotary drilling rig reaches the design height, the hole position, the hole diameter, the hole depth and the hole shape are checked. The drilling record needs to be filled in time, and all indexes of the slurry need to be controlled at any time. And (4) paying attention to stratum changes, fetching slag samples at the stratum changes, recording the slag samples into a recording table after the slag samples are judged, and drawing a geological histogram. During drilling, jumping must be carried out, namely when the previous pile is drilled next, holes must be formed at the positions where the piles are separated by 1-2 piles, and disturbance of adjacent pile successive construction to newly poured concrete is prevented.

(2) And (3) bearing platform construction: after the pile foundation is detected to be qualified, construction of a bearing platform can be carried out, a side line of a foundation is determined according to the center point of the pile foundation, and then the foundation is set off to draw the excavation range of the foundation pit; the construction main process of the bearing platform comprises the following steps: excavation of a foundation pit, treatment of a substrate, binding of reinforcing steel bars, positioning and reinforcing of a template and concrete pouring.

(3) Pier column construction: before pier stud construction, the joint of the bearing platform and the upright post is mechanically chiseled, wherein the chiseled range is less than 1cm of the cross section of the connecting post, impurities on the surface of a connecting rib are cleaned, and loose concrete is removed.

(4) Installing a retaining plate: after the prefabricated components of the retaining plates and the pouring of the pier columns are completed, the retaining plates between the pier columns can be placed after the pier column concrete reaches the designed strength; and in the installation process of the retaining plate, wall back backfilling is synchronously carried out according to design requirements, and a drainage facility is arranged.

(5) And after the construction of the crown beam is finished, backfilling the wall back, wherein 50cm behind the retaining plate is a backfilling area. The material in the backfill region is sand gravel, the material outside the backfill region can be original soil, the backfill is carried out by 30 cm layers, and the backfill compactness requirement is more than 94%.

(6) The pipeline construction adopts a reverse excavation form, a foundation pit with the depth of more than 3 meters is excavated by supporting with a steel sheet pile, and the rest is excavated by slope excavation.

The utility model has the advantages that:

1. the utility model discloses can satisfy arranging of near river course building sewage pipe network, satisfy sewage and collect and discharge requirement to can keep the side slope stability of weak riverbed ground, prevent that the side slope landslide from leading to the side slope warp the unstability.

2. The utility model discloses the long-term safety and the stability of sewage pipe network have been guaranteed to the washing away of riverbed to reducible river.

3. The utility model discloses because supporting construction is stable, traditional gravity type barricade relatively, occupation space reduces greatly, in the work progress, can reduce the expropriation and the removal of peripheral soil.

Drawings

FIG. 1 is a side schematic view of the present invention;

FIG. 2 is a schematic structural view of a cross section A-A in FIG. 1;

FIG. 3 is a schematic front view of the present invention;

the reference numbers in the figures illustrate: 1. filling piles; 2. a bearing platform; 3. a soil guard plate; 31. a water drain hole; 4. pier studs; 5. a crown beam; 6. a sewage pipe.

Detailed Description

The first embodiment is as follows:

the riverway side sewage pipe network is combined with a pile-plate type retaining wall arrangement structure, the pile-plate type retaining wall is positioned at the riverway side, and a sewage pipe 6 is embedded in backfill soil 2-3 meters away from the river bank side of the pile-plate type retaining wall; the pile-plate type retaining wall comprises a plurality of cast-in-place piles 1 with the lower parts embedded into soil layers, wherein the upper part of each cast-in-place pile 1 bears a pier stud 4, and a soil retaining plate 3 is fixed on the side surface of each pier stud 4; the height of the sewage pipe 6 is higher than the designed river line and lower than the height of the top of the pier stud 4; the size of the cast-in-place pile 1 is phi 1500mm, the size of the pier column 4 is 1050 multiplied by 1050mm, the size is 2930 multiplied by 1200 multiplied by 250mm, and the pipe diameter of the sewage pipe is not more than DN 2000; considering lateral soil pressure, 28mm deformed steel bars are adopted for pier stud reinforcing steel bars close to the bank side, and 25mm deformed steel bars are adopted for the rest three sides;

the upper end of the cast-in-place pile 1 is provided with a bearing platform 2, a pier stud 4 is borne above the bearing platform 2, and the designed river line is 0.6 m higher than the bearing platform; the size of the bearing platform is 700 multiplied by 1700 mm;

a crown beam 5 is arranged above the pier stud 4 and connected with the pier stud, and the size of the crown beam is 400 multiplied by 1550 mm;

a plurality of drain holes 31 are formed in the soil blocking plate 3, and the positions of the drain holes 31 are all positioned above a designed riverbed line; the aperture of the drain holes is 100mm, the vertical distance is 1.5m, and the lowest row of drain holes is 500mm higher than the designed river line;

the backfill soil is soil-sandwiched broken stone; and backfilling the soil retaining plate and the sewage pipe network by using soil-sandwiched broken stones, and backfilling in layers, wherein the compaction degree is not lower than 94%.

Claims

1. River course limit sewage pipe network combines stake board-like barricade arrangement structure, its characterized in that: the pile-plate type retaining wall is positioned at the edge of a river channel, and the sewage pipe (6) is embedded in backfill 2-3 meters away from the bank side of the pile-plate type retaining wall; the pile-plate type retaining wall comprises a plurality of cast-in-place piles (1) with lower parts embedded into soil layers, wherein the upper part of each cast-in-place pile (1) bears a pier stud (4), and a soil retaining plate (3) is fixed on the side surface of each pier stud (4); the height of the sewage pipe (6) is higher than the designed river line and lower than the height of the top of the pier stud (4).

2. The riverway side sewage pipe network combined pile-plate type retaining wall arrangement structure as claimed in claim 1, wherein: bored concrete pile (1) upper end sets up cushion cap (2), and cushion cap (2) top bears pier stud (4), and the design waterline is higher than cushion cap (2) 0.6 meters.

3. The riverway side sewage pipe network combined pile-plate type retaining wall arrangement structure as claimed in claim 1, wherein: and a crown beam (5) is arranged above the pier column (4) and is connected with the pier column.

4. The riverway side sewage pipe network combined pile-plate type retaining wall arrangement structure as claimed in claim 1, wherein: the retaining plate (3) is provided with a plurality of drainage holes (31), and the positions of the drainage holes (31) are all located above a designed riverbed line.

5. The riverway side sewage pipe network combined pile-plate type retaining wall arrangement structure as claimed in claim 1, wherein: the backfill soil is soil-sandwiched broken stone.