CN212772697U

CN212772697U - Rainwater sewer

Info

Publication number: CN212772697U
Application number: CN202022137134.1U
Authority: CN
Inventors: 李仁平; 周基; 郭华
Original assignee: Hunan University of Science and Engineering
Current assignee: Zeng Canhong
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-03-23
Anticipated expiration: 2030-09-25

Abstract

The utility model provides a rainwater sewer. The rainwater sewer comprises an underground continuous wall, the underground continuous wall comprises a plurality of tubular member units, the plurality of tubular member units are connected with one another to form a wall body of the underground continuous wall, and the wall body is enclosed into a plurality of cells for containing water; cement soil is filled in the cavity of the wall body, and a cement soil waterproof curtain is arranged below the bottom of the underground continuous wall; a tubular pile is driven downwards into the center of the bottom surface of each cell, the tubular pile penetrates through a cement soil layer and enters a lower horizontal foundation soil layer, and a galvanized iron wire mesh cement mortar layer is arranged on the bottom surface of each cell to form a bottom plate of each cell; a plurality of first through holes used for enabling the grids to be mutually communicated are formed in the inner wall between the grids, and a plurality of second through holes used for collecting drainage of the earth surface drainage ditch are formed in the outer wall of each grid. The utility model has the characteristics of construction method is simple, construction cost is low, storage capacity is big, the construction progress is fast, the low influence of environment etc.

Description

Rainwater sewer

Technical Field

The utility model relates to a sewer engineering technical field, concretely relates to rainwater sewer.

Background

The sponge city is like a piece of sponge, can carry out elastic treatment to water, and stores and discharges rainfall, domestic water, industrial water and the like in the city through basic facilities such as green lands, roads, drainage systems and the like in the city. Through the control to the inside water resource of city, the city is enough water supply occasionally when needing the water, can save the water when the water yield is too big to carry out purification treatment to waste water, sewage, let the infiltration and the repair function of city self well move.

The sewer is known as a city civilization landmark. In many areas of China, short-time heavy rainfall weather is often generated, the rainfall intensity is high, large-area runoff can occur on the ground in a short time after the rainfall occurs, and if accumulated water cannot be smoothly discharged, serious urban waterlogging problems can be caused.

The existing urban sewer has the problems of long construction time, high construction cost, small storage capacity and the like due to unreasonable structural design.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a rainwater sewer solves current city sewer construction cost height, storage capacity is little, the slow problem of construction progress.

The utility model provides a technical scheme of above-mentioned technical problem is: providing a rainwater sewer which comprises an underground continuous wall, wherein the underground continuous wall comprises a plurality of tubular member units, a plurality of tubular member units are connected with each other to form a wall body of an underground continuous wall pipe, and the wall body encloses a plurality of cells for containing water;

cement soil is filled in the cavity in the wall body, and a cement soil waterproof curtain layer is arranged below the bottom of the underground continuous wall;

the tubular pile is driven downwards into the center of the bottom surface of each grid chamber, the tubular pile penetrates through the cement soil layer and extends into a lower horizontal foundation soil layer, and a galvanized wire mesh cement mortar layer is arranged above the bottom surface of each grid chamber to form a bottom plate of each grid chamber;

and a plurality of first through holes for enabling the cells to be mutually communicated and a plurality of second through holes for collecting drainage water of the surface drainage ditch are formed in the side wall of the underground continuous wall.

In an alternative embodiment, the tubular member unit includes a pipe body and a male and a female fastener provided on the pipe body;

the secondary buckle piece comprises a steel plate and a round pipe which are arranged in parallel, the long edge of one side of the steel plate is fixed on the side wall of the pipe body and extends from one end of the pipe body to the other end of the pipe body, and the round pipe is arranged on the other long edge of the steel plate and extends from one end of the pipe plate to the other end of the pipe plate;

the female fastener comprises a steel plate and a groove structure which are arranged in parallel, a long edge of one side of the steel plate is fixed on the side wall of the tube body and extends from one end of the tube body to the other end of the tube body, the groove structure is provided with a groove structure similar to an 8-shaped cavity, and the groove structure is arranged on the other long edge of the steel plate and extends from one end of the tube plate to the other end of the tube plate;

the circular tube can be inserted into the cavity of the groove structure arranged on the adjacent tubular component unit to realize the mutual connection of the two tubular component units, and the middle connecting part of the adjacent tubular component units forms a middle cavity after being connected.

In an alternative embodiment, the pipe body is configured as a steel pipe, and the cross-sectional shape of the pipe body is one of a square, a rectangle, a curved quadrilateral, a trapezoid or a circle.

In an alternative embodiment, the top of the underground continuous wall is provided with steel plates for closing the cells, and the top of the steel plates is provided with a top plate made of reinforced cement soil.

In an alternative embodiment, the thickness of the cemented soil waterproof curtain layer is 3 m-5 m.

In an alternative embodiment, the first through hole and the second through hole are respectively arranged on the inner wall and the outer wall of the underground continuous wall.

The utility model forms the wall part of the underground continuous wall of the sewer by driving the prefabricated tubular component unit and the cement soil waterproof curtain, thereby reducing the construction difficulty of the underground continuous wall and improving the efficiency; a lattice chamber for containing water is formed by enclosing the wall body of the underground continuous wall, and a rainwater flow channel is formed by arranging through holes in the lattice chamber. The anti-floating reverse osmosis composite layer of the sewer is formed by combining a cement soil layer and the high-strength prestressed pipe pile, and the bottom plate of the sewer is formed by adopting a galvanized iron wire mesh cement mortar layer. The whole sewer is simple in structure, convenient to construct, high in overall strength and long in service life, and the construction period is shortened.

Drawings

Fig. 1 is a top view of a storm drain according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view taken at C-C of FIG. 1;

fig. 5 is a schematic view illustrating the separation of the male and female fasteners according to an embodiment of the present invention.

Description of reference numerals:

10-a tubular member unit; 20-pipe pile; 30-a first via; 40-a second through-hole; 50-sub fasteners; 60-female fasteners; 70-a cement soil layer or cement soil waterproof curtain layer; 80-a top plate; 90-profiled steel sheet; 11-lower lying foundation soil layer; 12-cells; 13-bottom plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a rainwater sewer, which includes an underground continuous wall, wherein the underground continuous wall constitutes a main structure of the sewer and plays a role of bearing an external load, and the underground continuous wall needs to have a high strength.

In order to improve the strength of the underground diaphragm wall and reduce the difficulty of constructing the underground diaphragm wall, the underground diaphragm wall of the present embodiment includes a plurality of tubular member units 10. The tubular member units 10 constitute a wall frame structure of the underground diaphragm wall, and the material thereof is generally made of steel plates. The wall body of the underground continuous wall formed by connecting the plurality of tubular member units 10 with each other, that is, the tubular member unit 10 is the smallest unit for assembling the wall body of the underground continuous wall, and the sewer wall body with the specified shape required by different settings can be formed by assembling the plurality of tubular member units 10 with each other.

In this embodiment, the wall is enclosed to form a chamber 12 as shown in fig. 3, the wall is enclosed to form a plurality of chambers 12, one chamber 12 in this embodiment is taken as an example, and the chamber 12 is used as a part for containing water in a sewer and may be a grid-shaped containing space.

In order to further improve the strength of the wall body, soil in the wall body needs to be solidified to become cement soil, the wall body in the embodiment is formed by assembling tubular member units 10 in a mode of driving in sequence, and the wall body structure formed by the tubular member units and the cement soil in the inner cavity of the tubular member has high strength and bearing capacity.

In order to further improve the bearing capacity of the underground continuous wall and increase the uplift resistance of the sewer bottom plate, optionally, the underground continuous wall is arranged below on a cemented soil water-stop curtain layer 70, and the cemented soil water-stop curtain layer 70 is communicated with cemented soil in the inner cavity of the wall body of the underground continuous wall.

In a possible implementation manner, a tubular pile 20 is arranged at the center of the bottom of the cell 12 enclosed by the wall, optionally, the tubular pile 20 is a tubular pile 20 with high prestress, and the tubular pile 20 mainly plays a role in pulling resistance, and generally adopts a single pile. To improve the resistance of the tubular pile 20 to pulling out, the tubular pile 20 passes through the soil cement waterproof curtain layer 70 and extends into the lower bedbase layer 11.

The bottom plate 13 is arranged at the bottom of the space of the grid 12, namely above the cement soil layer 70, the bottom plate 13 is a galvanized wire mesh cement mortar layer, namely, a layer of galvanized wire mesh is firstly paved and fixed, then a layer of cement mortar is poured and trowelled, and then the cement mortar layer is solidified, and the galvanized wire mesh cement mortar layer forms the bottom plate 13 of the sewer. It has the functions of preventing seepage and resisting scouring, and can prolong the service life of sewer.

The soil body at the bottom of the grid chamber is solidified to form a cement soil layer 70 which forms a semi-rigid structure together with the tubular pile 20 and the galvanized wire mesh cement mortar layer, and the semi-rigid structure has strong cracking resistance, seepage resistance and floating resistance.

In one possible implementation, the side walls of the underground diaphragm wall are provided with a plurality of first through holes 30 for communicating the cells 12 with each other and a plurality of second through holes 40 for collecting drainage of surface drainage channels.

Specifically, the first through holes 30 are provided in the wall body along the arrangement direction of the cells 12, the first through holes 30 are opened in the tubular member unit 10, and optionally, the first through holes 30 are provided in the underground continuous wall at a position near the bottom surface; alternatively, the first through holes 30 are provided in the two opposite inner walls and the holes are formed in the two walls in the same position and shape to allow the water to flow from one cell 12 to the other cell 12.

Optionally, a second through hole 40 is provided on the other two opposite outer walls, the second through hole 40 is used for collecting surface drainage or connecting an external drainage system; optionally, the second through-hole 40 is provided at a position near the top of the underground diaphragm wall.

The embodiment of the utility model has the advantages that the wall body part of the underground diaphragm wall of the sewer is formed by the cement soil obtained by using the prefabricated tubular component and the undisturbed soil through in-situ high-pressure rotary spraying, the construction difficulty of the underground diaphragm wall is reduced, and the efficiency is improved; water is filled and drained by arranging through holes in the cells 12, wherein the cells 12 for containing water are surrounded by the walls of the underground continuous wall. The anti-floating water-proof composite layer of the sewer is formed by combining a cement soil layer and the high-strength prestressed pipe pile 20, and the bottom plate 13 of the sewer is formed by adopting a galvanized iron wire mesh cement mortar layer. The whole sewer is simple in structure, convenient to construct, high in strength and long in service life.

In one possible implementation, the tubular member unit 10 includes a pipe body and a male fastener 60 and a female fastener 50 provided on the pipe body. Alternatively, at least one pair of female fasteners 50 and at least one pair of female fasteners 60 are provided on each tube, and one pair of female fasteners 50 and two pairs of female fasteners 60 or two pairs of female fasteners 50 and one pair of female fasteners 50 can be provided on the tube at the position of two adjacent cells 12.

The secondary buckle 50 comprises a connecting plate and a round pipe which are arranged in parallel, wherein a long edge on one side of the connecting plate is fixed on the side wall of the pipe body and extends to the other end of the pipe body from one end of the pipe body, and the round pipe is arranged on a long edge on the other side of the connecting plate and extends to the other end of the pipe body from one end of the pipe plate. Optionally, the circular tube is a tubular structure with a small diameter.

Wherein, female fastener 60 includes parallel arrangement's connecting plate and groove structure, and the long limit of connecting plate one side is fixed on the body lateral wall and is extended to its other end from body one end, and groove structure has the groove structure of similar "8" style of calligraphy cavity, and groove structure sets up and extends to its other end from connecting plate one end on the long edge of the opposite side of connecting plate. That is, two through holes extending along the length direction of the female fastener 60 are formed in the female fastener, the two through holes are communicated with each other to form an 8-shaped hole, the female fastener is manufactured by welding two round pipes with the same diameter in parallel, and then slotting is performed by using a plasma cutting machine to form a groove structure.

In an alternative embodiment, a round tube can be inserted into the cavity of the groove structure provided on the adjacent tubular member unit 10 to connect the two tubular member units 10, and the middle connection between the adjacent tubular member units 10 forms a middle cavity.

That is, two adjacent tubular member units 10 are connected to each other by engaging a pair of male fasteners 50 provided on the pipe body of one tubular member unit 10 with the female fasteners 60 of the adjacent tubular member unit 10. Because the male fastener 50 and the female fastener 60 can both comprise a connecting plate structure extending towards one side, after the male fastener 50 and the female fastener 60 are connected, namely, the connection is realized when the circular tube is inserted into a through hole at the far end of the 8-shaped groove structure, and after two adjacent tubular member units 10 are connected, three cavities are formed, wherein two cavities are inner cavities of the tube body, and the other cavity is the intermediate space.

Optionally, the pipe body is configured as a steel pipe, and the cross-sectional shape of the pipe body is one of a square, a rectangle, a curved quadrilateral, a scalene quadrilateral, or a circle. In this embodiment, the cross section of the pipe body is square, optionally, the cavities of the connection structure are all square, that is, the inner cavity of the pipe body is a cavity with a square cross section, the middle cavity also forms a cavity with a square cross section, and the areas of the three squares are equal. Accordingly, the cells 12 surrounded by the square tubular member units 10 are also spaces having a square cross section. Through this kind of setting, be convenient for on the one hand connect, structural strength is better simultaneously.

The underground continuous wall is formed by tubular component units 10 with square sections, and when the middle cells 12 are excavated, inner supports are not needed to keep stability, so that the influence on the surrounding environment is small. The construction of the underground continuous wall adopts the new technology of the prefabricated assembly characteristics, breaks through the construction process limitation of the traditional underground continuous wall, does not need to use expensive grooving machinery for grooving during construction, does not need to adopt a slurry retaining wall, avoids the problems of ground settlement and ground lateral displacement caused by grooving, also avoids the problem of treatment of waste slurry in the later construction period, and greatly reduces the construction cost.

In one possible implementation, the underground diaphragm wall is provided with steel plates 90 of the closed cells 12 on top, and the steel plates 90 are provided with a top plate 80 made of reinforced cement soil on top. The top plate of the sewer adopts the form that the profiled steel sheet 90 is combined with the reinforced concrete, so that the overall strength is improved. Optionally, the steel plate 90 is a prefabricated profiled aluminum-zinc-plated steel plate 90 as a permanent formwork, and a reinforced concrete slab is poured on the steel plate, so that the steel plate has the advantages of no need of formwork support, high construction speed and low cost.

In one possible implementation, the soil cement waterproof curtain layer 70 has a thickness of 3m to 5 m. The anti-floating capacity of the cement soil layer 70 of the sewer bottom plate is improved by driving the cement soil layer 70 into the tubular pile 20 in the grid chamber.

Claims

1. A rainwater sewer is characterized by comprising an underground continuous wall, wherein the underground continuous wall comprises a plurality of tubular member units, the plurality of tubular member units are connected with each other to form a wall body of an underground continuous wall pipe, and the wall body encloses a plurality of cells for containing water;

cement soil is filled in a cavity in the wall body, and a cement soil waterproof curtain is further arranged below the bottom of the underground continuous wall;

a tubular pile is driven downwards into the center of the bottom surface of each grid chamber, the tubular pile penetrates through the cement soil layer and enters a lower horizontal foundation soil layer, and a galvanized wire mesh cement mortar layer is arranged above the bottom surface of each grid chamber to form a bottom plate of each grid chamber;

the side wall of the underground continuous wall is provided with a plurality of first through holes for communicating the cells with each other and a plurality of second through holes for collecting drainage of surface ditches.

2. The storm sewer according to claim 1, wherein the tubular member unit comprises a pipe body and a male and a female fastener provided on the pipe body;

the secondary buckle piece comprises a steel plate and a round pipe which are arranged in parallel, one long edge of the steel plate is fixed on the side wall of the pipe body and extends from one end of the pipe body to the other end of the pipe body, and the round pipe is arranged on the other long edge of the steel plate and extends from one end of the steel plate to the other end of the steel plate;

the female fastener comprises a steel plate and a groove structure which are arranged in parallel, one long edge of the steel plate is fixed on the side wall of the pipe body and extends from one end of the pipe body to the other end of the pipe body, the groove structure is provided with a groove structure similar to an 8-shaped cavity, and the groove structure is arranged on the other long edge of the steel plate and extends from one end of the steel plate to the other end of the steel plate;

the circular tube can be inserted into the cavity of the groove structure arranged on the adjacent tubular component unit to realize the mutual connection of the two tubular component units, and the middle connecting part of the adjacent tubular component units forms a middle cavity after the adjacent tubular component units are connected.

3. The storm sewer of claim 2, wherein the pipe body is a steel pipe, and the cross-sectional shape of the pipe body is one of square, rectangular, quadrilateral with curved sides, quadrilateral with non-equilateral sides, or circular.

4. The storm sewer according to claim 1, wherein the underground diaphragm wall is provided with a profiled steel sheet closing the cells at the top, and the profiled steel sheet is provided with a top plate made of reinforced cement soil at the top.

5. The storm sewer of claim 1, wherein the soil cement water stop curtain layer has a thickness of 3m to 5 m.

6. The storm sewer according to claim 1, wherein the first and second through holes are provided in the inner and outer wall side walls, respectively, of the underground continuous wall of the sewer grid.