Urban channel dike retaining wall structure and construction method

Abstract

The application discloses a kind of urban channel embankment retaining wall structure and construction method, retaining wall structure includes embankment, water retaining system and drainage system;Embankment includes gravity retaining wall and concrete bottom plate, embankment includes gravity retaining wall and concrete bottom plate, gravity retaining wall is right angle trapezoidal section, vertical water side, the top of concrete bottom plate is horizontal plane, carries gravity retaining wall, water side thickening, embankment is arranged in channel both sides;Water retaining system includes at least two groups of can be moved into or moved out channel to open and close water flow's plank, two groups of plank and the enclosed space formed by embankment are used as construction area;Drainage system includes drainage main pipe and drainage branch pipe, drainage main pipe is along the backwater side slope foot of gravity retaining wall length arrangement, located in the top of concrete bottom plate, drainage branch pipe is located in the top of concrete bottom plate, one end is communicated with channel, the other end is connected into drainage main pipe, the front of drainage branch pipe is all set gate slot and the gate that can slide up and down along gate slot, by opening and closing gate, make drainage system open and close, at least two groups of plank outside are all set drainage branch pipe respectively as water inlet end and outlet end.The application adopts assembled water retaining system and pre-buried drainage system, can be quickly assembled and construction;Through gate lifting, plank assembly and drainage main pipe / branch pipe drainage, it can realize the construction diversion of dredging and overhauling channel section, efficient operation;Effectively solve the difficult problem that existing urban channel embankment retaining wall structure function is single, channel dredging and overhauling diversion is difficult and cost is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of urban water conservancy engineering, and in particular to a city channel embankment retaining wall structure and a construction method. BACKGROUND

[0002] With the acceleration of urbanization, urban flood control and channel management have become an important part of urban planning and management. Urban channels play a vital role in urban infrastructure, not only responsible for water transport and distribution, but also for flood control, drainage, irrigation, beautification of urban environment and other functions. The continuity of water flow in urban channels is crucial to maintaining the above functions.

[0003] At present, most of the city channel embankment retaining walls use simple concrete or stone gravity structures, which have single structure function and many limitations. With the increase of channel use time, the silt at the bottom of the channel will continue to accumulate, which will affect the normal use function of the channel when accumulated to a certain extent. In addition, the water gate, pump station and other facilities set on part of the channel section also need to be repaired regularly, and channel dredging and facility maintenance require dry land construction, which requires the diversion of channel water flow. In order to ensure the normal use function of the channel, the channel water flow cannot be interrupted, and the side of the channel located in the built urban area is generally close to the building, which cannot use the upstream cofferdam to block, excavate the side of the open channel and divert the water flow. The currently available diversion methods are: filling soil and stone cofferdam on the upstream and downstream of the channel occupied by dredging or maintenance, burying culvert pipe between the upstream and downstream cofferdam for discharge or using water pump to pump and discharge the upstream water flow to the downstream, but burying large diameter culvert pipe in the middle of the channel will affect dredging and maintenance work. The cost of using water pump to pump and discharge when the water flow is large is high, and the configuration of large flow water pump will increase the difficulty of construction power organization, both methods have certain limitations and cannot meet the actual needs. In addition, the material source for soil and stone cofferdam needs to be purchased, and the cofferdam soil and stone is difficult to be reused after being soaked, for a very long channel, even if it is constructed in sections, a large amount of soil and stone material is needed, and the disposal of cofferdam debris generated by cofferdam removal will also increase the construction cost and organization difficulty. SUMMARY

[0004] In order to solve the above problems, the present application provides a city channel embankment retaining wall structure and a construction method.

[0005] The present application is realized by the following technical solutions.

[0006] The present application provides a city channel embankment retaining wall structure, which comprises an embankment, a water retaining system and a drainage system.

[0007] The embankment comprises a gravity retaining wall and a concrete bottom plate, the gravity retaining wall is a right-angled trapezoidal section, the water-facing side is vertical, the top of the concrete bottom plate is a horizontal plane, the gravity retaining wall is supported, the water-facing side is thickened, and the embankment is arranged on both sides of the channel;

[0008] The water retaining system comprises at least two groups of panels which can be moved into or out of the channel to open or close the water flow, and the space enclosed by the two groups of panels and the embankment serves as a construction area.

[0009] The drainage system comprises a drainage main pipe and a drainage branch pipe, the drainage main pipe is arranged along the backwater side slope foot of the gravity retaining wall and located on the top of the concrete bottom plate, the drainage branch pipe is located on the top of the concrete bottom plate, one end of the drainage branch pipe is connected with the channel, and the other end of the drainage branch pipe is connected with the drainage main pipe, a door groove and a gate capable of sliding up and down along the door groove are arranged at the front part of the drainage branch pipe, the drainage system is opened or closed by opening or closing the gate, and the outer sides of the at least two groups of panels are respectively provided with the drainage branch pipes as water inlet ends and water outlet ends.

[0010] Further, the panel is a medium-thick strip plate, the length of the panel is greater than the width of the channel, a recess is arranged at the upper part of the panel, and a protrusion is arranged at the lower part of the panel, and the upper and lower panels are closely attached.

[0011] Further, the water retaining system comprises a plate groove, the plate groove is symmetrically arranged on the embankment on both sides of the channel, and the panels are moved into or out of the channel by being inserted into or extracted from the plate groove.

[0012] Further, the plate groove vertically penetrates from the top of the gravity retaining wall to the middle part of the concrete bottom plate, and the panel and the plate groove are closely attached.

[0013] Further, the plate groove is vertically arranged on the embankment on both sides of the channel.

[0014] Further, the water retaining system comprises a plunger, the plunger comprises a square column, a reinforced body and a column foot, the square column can be closely embedded in the plate groove, the square column and the column foot are in L shape, and the reinforced body is a bent steel bar penetrating through the square column and the column foot.

[0015] Further, the door groove is a rectangular groove, the door groove vertically penetrates through the gravity retaining wall, the width of the door groove is greater than the diameter of the drainage branch pipe, and the height of the door groove is greater than twice the diameter of the drainage branch pipe.

[0016] Further, the gate comprises a lower baffle and an upper lifting rod, the baffle is a rectangular medium-thick plate, can be closely embedded in the door groove, the height of the baffle is greater than the diameter of the drainage branch pipe, an arc-shaped groove vertically penetrates through the gravity retaining wall above the middle position of the door groove, and the lifting rod is closely placed in the arc-shaped groove.

[0017] The application also provides a construction method of the urban channel embankment retaining wall structure.

[0018] Step one: city channel embankment retaining wall segmented construction, after the city channel embankment foundation pit excavation is completed, first, the concrete bottom plate is constructed, then, the drainage main pipe and the drainage branch pipe are fixedly connected, then, the formwork is erected, the door groove and the plate groove are reserved in the formwork erection process, the spacing of the door groove and the plate groove is determined according to the required space for dredging or maintenance, then, the gravity type retaining wall is poured and constructed, after the concrete pouring and maintenance are completed, the embankment backfill is carried out, the door groove and the plate groove are trimmed according to the requirements, the gate is assembled into the door groove;

[0019] Step two: when dredging or maintenance is required in the middle of the channel section, at this time, the surrounding retaining working condition, the gate in front of the upstream plate groove of the channel section is lifted, then, the gate behind the downstream plate groove of the channel section is lifted, and the gate between the upstream and downstream plate grooves of the channel section falls down; then, the plunger located in the plate groove is pulled out through the reinforcing body bent on the upper portion of the plunger, then, the upstream and downstream fences are assembled, and the upstream and downstream channels are blocked, at this time, the upstream water flows into the drainage branch pipe, flows into the drainage main pipe, and finally flows out through the downstream drainage branch pipe and flows into the downstream channel; then, the water in the channel between the upstream and downstream fences is pumped and drained to the downstream, and the construction in the section can be carried out;

[0020] Step three: after the dredging or maintenance of the channel section is completed, at this time, the normal water passing working condition, the upstream and downstream fences of the construction channel section are removed, the water passing capacity of the channel section is restored, the gate in front of the upstream plate groove of the channel section is lowered, then, the gate behind the downstream plate groove of the channel section is lowered, at this time, the upstream water is discharged from the channel, and after the fences are completely removed, the plunger is slid into the plate groove from top to bottom.

[0021] The beneficial effects of the present application are:

[0022] The present application adopts the assembled water retaining system and the pre-buried drainage system, can be quickly assembled and constructed, and can realize the construction diversion of the dredging and maintenance channel section through the gate lifting and lowering, fence assembly and drainage main pipe / branch pipe drainage, is simple and convenient to operate, and is high in operation efficiency; the fences of each channel section are shared and can be repeatedly used, the operation and maintenance cost is low, and the problems that the existing city channel embankment retaining wall structure has single function, the channel section dredging and maintenance diversion is difficult and the cost is high are effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a general schematic view of the city channel embankment retaining wall of the embodiment 1 of the present application;

[0024] Figure 2 It is an axial side view of the surrounding retaining working condition of the city channel embankment retaining wall structure of the embodiment 1 of the present application;

[0025] Figure 3 It is a front view of the surrounding retaining working condition of the city channel embankment retaining wall structure of the embodiment 1 of the present application;

[0026] Figure 4 It is an axial view of the fence of the city channel embankment retaining wall structure of the present application;

[0027] Figure 5 Front view of the city channel embankment retaining wall structure of the present application;

[0028] Figure 6 Axial side view of the city channel embankment retaining wall structure of the present application in normal water passing working condition of embodiment 1;

[0029] Figure 7 Front view of the city channel embankment retaining wall structure of the present application in normal water passing working condition of embodiment 1;

[0030] Figure 8 Axial side view of the city channel embankment retaining wall structure of the present application;

[0031] Figure 9 Axial side view of the city channel embankment retaining wall structure of the present application;

[0032] Figure 10 Left view of the city channel embankment retaining wall structure of the present application in enclosing working condition of embodiment 1;

[0033] Figure 11 Axial side view of the city channel embankment retaining wall structure of the present application;

[0034] Figure 12 Axial side view of the drainage system of the city channel embankment retaining wall structure of embodiment 2;

[0035] Figure 13 Front view of the drainage system of the city channel embankment retaining wall structure of embodiment 2;

[0036] Figure 14 Axial side view of the city channel embankment retaining wall structure of the present application in enclosing working condition of embodiment 1;

[0037] Figure 15 Axial side view of the city channel embankment retaining wall structure of the present application in normal water passing working condition of embodiment 1.

[0038] In the figure:

[0039] Embankment 1; gravity retaining wall 101; concrete bottom plate 102;

[0040] Water retaining system 2; fence plate 201; plate groove 202; plunger 203; square column 2031; reinforced body 2032; column foot 2033;

[0041] Drainage system 3; drainage main pipe 301; drainage branch pipe 302; gate 303; gate groove 304. DETAILED DESCRIPTION

[0042] The following further describes the structure involved in the present application or the technical terms used. These descriptions are merely used to illustrate how the present application is implemented by way of example and cannot constitute any limitation on the present application.

[0043] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left" and "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated position or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present application, unless otherwise explicitly specified and limited, "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, can also be detachable connection, or can be integrated; can be direct connection, or indirect connection through an intermediate medium; can be internal communication of two elements or mutual interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] Embodiment 1

[0046] As shown in Figures 1 to 15 , the present application provides a city channel embankment retaining wall structure, which comprises an embankment 1, a water retaining system 2 and a drainage system 3.

[0047] As shown in Figure 2 , the embankment 1 is composed of a gravity retaining wall 101 and a concrete bottom plate 102. The gravity retaining wall 101 is a right-angled trapezoidal section with a vertical water side, and is arranged along the length of the two sides of the channel. The top of the concrete bottom plate 102 is a horizontal plane, bearing the gravity retaining wall 101 on the upper part, and the water side is thickened as a toothed ridge for protection. The embankment 1 is arranged on both sides of the channel.

[0048] As shown in Figures 2 to 9 , the water retaining system 2 is composed of a baffle plate 201, a plate groove 202 and a plunger 203.

[0049] As shown in Figures 2 to 5As shown, the baffle plate 201 is a thick plank, slightly longer than the channel width, with a groove 2011 on the upper part and a protrusion 2012 on the lower part, wherein the groove 2011 can be closely fitted with the protrusion 2012, and both are arranged along the length direction of the baffle plate 201. The plate groove 202 is symmetrically arranged on the embankment on both sides of the channel, and a slot hole is formed on the water-facing side of the channel, vertically penetrating the gravity retaining wall 101 from the top to the middle of the concrete bottom plate 102. The width of the plate groove 202 is equivalent to the thickness of the baffle plate 201, and the two can be closely fitted. When the two ends of the baffle plate 201 are vertically placed in the plate groove 202 on both sides of the channel, they can slide to the bottom of the plate groove 202, and the other baffle plates 201 remain in the same direction and are assembled into a whole by fitting the groove 2011 and the protrusion 2012 to block the channel. The plate grooves 202 symmetrically arranged on both sides of the channel are arranged vertically to the center line of the channel at a certain distance along the flow direction of the channel. The specific distance is determined according to the channel dredging length or the space required for facility maintenance.

[0050] As shown in Figures 6 to 7 , 8-9, the plunger 203 is composed of a square column 2031, a reinforced body 2032, and a column foot 2033. The size of the square column 2031 is equivalent to that of the plate groove 202, which can be closely embedded in the plate groove 202. The square column 2031 and the column foot 2033 are L-shaped, and the reinforced body 2032 is a bent steel bar that penetrates the square column 2031 and the column foot 2032, which enhances the toughness and facilitates insertion and extraction. The end of the reinforced body 2032 is bent, which also facilitates the extraction of the plunger 203 from the plate groove 202. To avoid the entry of debris into the plate groove 202 and affect the assembly of the baffle plate 201 next time, the plunger 203 is slid into the plate groove 202 from top to bottom after the baffle plate 201 is completely removed.

[0051] As shown in Figures 6 to 7 , the drainage system 3 is composed of a drainage main pipe 301, a drainage branch pipe 302, a gate 303, and a gate groove 304. The drainage main pipe 301 is arranged on one side of the channel and along the backwater side slope foot of the gravity retaining wall 101, fixed on the top of the concrete bottom plate 102. The drainage branch pipe 302 is arranged on both sides of each baffle plate 201, located on the top of the concrete bottom plate 102, one end connected to the channel, and the other end connected to the drainage main pipe 301.

[0052] As shown in Figure 2 , 10As shown in Figure 11, each drainage branch pipe 302 is equipped with a gate slot 304 and a gate 303 at its front. The gate slot 304 is a relatively wide rectangular slot that extends horizontally through the gravity retaining wall 101. The width of the gate slot 304 is slightly larger than the diameter of the drainage branch pipe 302, and the height of the gate slot 304 is more than twice the diameter of the drainage branch pipe 302. The gate 303 consists of a lower baffle 3031 and an upper lifting rod 3032, which are firmly connected. The baffle 3031 is a rectangular medium-thick plate that can be fitted into the gate slot 304. Its height is slightly larger than the diameter of the drainage branch pipe 302. The lifting rod 3032 is cylindrical. A narrow arc-shaped slot extends vertically through the gravity retaining wall 101 at the middle position above the gate slot 304, and the lifting rod 3032 can be fitted into the arc-shaped slot. The gate 303 can slide up and down along the gate slot 304, and the two can be connected by a slide rail.

[0053] Based on the above retaining wall structure, the present invention provides a construction method, the specific steps of which are as follows:

[0054] Step 1: Segmented construction of the urban canal embankment retaining wall. After the excavation of the urban canal embankment foundation pit is completed, the concrete base slab 102 is constructed first. Then, the drainage main pipe 301 and drainage branch pipe 302 are fixedly connected. Next, formwork is erected, reserving gate slots 304 and plate slots 202 during the formwork erection process. The spacing between the gate slots 304 and plate slots 202 is determined according to the space required for dredging or maintenance. The gravity retaining wall 101 is then poured. After the concrete pouring and curing are completed, the soil behind the embankment is backfilled. The gate slots 304 and plate slots 202 are then trimmed according to requirements, and the gate 303 is assembled into the gate slot 304. The guardrail 201 and gate 303 can be directly cast from formwork or cut from pre-formed steel plates. The symmetrically arranged plate slots 202 in different canal sections are of similar size, therefore the guardrail 201 required for construction in each canal section can be shared, greatly reducing the amount of guardrail 201 needed.

[0055] Step Two: When dredging or maintenance is required in the middle of the canal section, this is the enclosure phase; see [link / reference]. Figure 14 The gate 303 in front of the upstream trough 202 of the channel section is lifted, and then the gate 303 behind the downstream trough 202 of the channel section is lifted, causing the gate 303 between the upstream and downstream troughs 202 to fall. Then, the plunger 203 located in the trough 202 is pulled out through its upper bent reinforcing body 2032, and the upstream and downstream guardrails 201 are installed to block the upstream and downstream channels. At this time, the upstream water flows in from the drainage branch pipe 302, merges into the drainage main pipe 301, and finally flows out through the downstream drainage branch pipe 302, merging into the downstream channel. Subsequently, the water stored in the channel between the upstream and downstream guardrails 201 is pumped downstream, allowing construction to proceed within the section. When the channel slope is steep, after the upstream guardrail 201 is installed and meets the water-blocking conditions, the water stored in the channel between the upstream and downstream troughs 202 is discharged by gravity, and then the downstream guardrail 201 is installed, thus saving on pumping and drainage costs.

[0056] Step three: after the dredging or maintenance of the channel section is completed, it is the normal water passing condition, see Figure 15 The upstream and downstream of the construction section of the channel are removed, the water passing capacity of the channel section is restored, the gate 303 in front of the upstream flashboard 201 is lowered, and then the gate 303 behind the downstream flashboard 201 is lowered, at this time, the upstream water is discharged from the channel and no longer passes through the drainage branch pipe 302 and the drainage main pipe 301. In order to avoid the entry of sundries into the flashboard 201, affecting the assembly of the flashboard 201 next time, after the flashboard 201 is completely removed, the plunger 203 is slid into the flashboard 201 from top to bottom.

[0057] Example 2

[0058] As shown in Figures 12 to 13 Compared with example 1, the difference of the present embodiment is that the drainage main pipe 301 is arranged on both sides of the channel, arranged along the backwater side slope foot of the gravity retaining wall 101, fixed on the top of the concrete bottom plate 102, and the drainage branch pipe 302 is arranged on the upstream and downstream of the channel flashboard 202 on both sides of the channel, one end of which is communicated with the channel, and the other end is connected to the drainage main pipe 301, so as to meet the condition that the water flow of the channel is large, and the single-sided arrangement of the drainage main pipe 301 cannot meet the requirement, and the single-sided does not have the condition of burying the large-diameter drainage main pipe 301.

[0059] The above only describes the preferred embodiments of the present application and is not used to limit the present application, although the present application is described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A retaining wall structure for urban canal embankments, characterized in that: This includes dikes, water-blocking systems, and drainage systems; The embankment includes a gravity retaining wall and a concrete base slab. The gravity retaining wall has a right-angled trapezoidal cross section with the water-facing side being vertical. The top of the concrete base slab is horizontal and supports the gravity retaining wall. The water-facing side is thickened. The embankment is located on both sides of the channel. The water-blocking system includes at least two sets of movable barriers that can be moved into or out of the channel to block or block the water flow, and the enclosed space formed by the two sets of barriers and the embankment serves as the construction area. The drainage system includes a main drainage pipe and branch drainage pipes. The main drainage pipe is arranged along the back slope of the gravity retaining wall and is located on the top of the concrete base slab. The branch drainage pipes are located on the top of the concrete base slab, with one end connected to the channel and the other end connected to the main drainage pipe. Each branch drainage pipe is equipped with a gate slot and a gate that can slide up and down along the gate slot. The drainage system is opened and closed by opening and closing the gate. At least two sets of fence panels are equipped with branch drainage pipes on their outer sides, which serve as the inlet and outlet ends respectively. The guardrail is a medium-thick strip, longer than the width of the channel, with a groove on the upper part and a protrusion on the lower part, and the upper and lower guardrails fit together tightly. The water-blocking system includes a trough, which is symmetrically arranged on the embankments on both sides of the channel. The trough is used to move the guardrails in or out by inserting or removing them. The trough extends vertically from the top of the gravity retaining wall to the middle of the concrete base slab, and the parapet is tightly fitted with the trough. The troughs are arranged at certain intervals perpendicular to the center line of the channel along the channel flow direction.

2. The urban canal embankment retaining wall structure according to claim 1, characterized in that: The water-blocking system includes a plunger, which consists of a square column, a reinforcing body, and a column base. The square column can fit snugly into the plate groove, and the square column and column base are L-shaped. The reinforcing body is a steel bar with bent ends that runs through the square column and column base.

3. The urban canal embankment retaining wall structure according to claim 1, characterized in that: The gate slot is a rectangular slot that runs horizontally through the gravity retaining wall. The width of the gate slot is greater than the diameter of the drainage branch pipe, and the height is greater than twice the diameter of the drainage branch pipe.

4. The urban canal embankment retaining wall structure according to claim 1, characterized in that: The gate consists of a lower baffle and an upper lifting rod. The baffle is a rectangular medium-thick plate that can be fitted into the gate slot. Its height is greater than the diameter of the drainage branch pipe. A gravity retaining wall at the middle position above the gate slot extends vertically through an arc-shaped groove, and the lifting rod fits into the arc-shaped groove.

5. The construction method of the urban canal embankment retaining wall structure according to any one of claims 1-4, characterized in that: Includes the following steps: Step 1: Segmented construction of urban canal embankment retaining walls. After the excavation of the urban canal embankment foundation pit is completed, the concrete base slab is constructed first, followed by the fixed connection of the drainage main pipe and drainage branch pipe. Then, the formwork is erected, and gate slots and plate slots are reserved during the formwork erection process. The distance between the gate slots and plate slots is determined according to the space required for dredging or maintenance. Gravity retaining walls are then poured. After the concrete is poured and cured, the soil behind the embankment is backfilled, and the gate slots and plate slots are repaired as required. The gates are then installed into the gate slots. Step Two: When dredging or maintenance is required in the middle of the channel section, this is the enclosure condition. Lift the gate in front of the upstream trough of the channel section, and then lift the gate behind the downstream trough of the channel section. The gate between the upstream and downstream troughs of the channel section will fall. Then, pull out the plunger located in the trough through the upper bent reinforcement body, and then install the upstream and downstream guardrails to block the upstream and downstream channels. At this time, the upstream water flows in from the drainage branch pipe, merges into the drainage main pipe, and finally flows out through the downstream drainage branch pipe and merges into the downstream channel. Then, pump the water in the channel between the upstream and downstream guardrails to the downstream, and construction can be carried out in the section. Step 3: After the dredging or maintenance of the canal section is completed, the normal water flow condition is restored. Remove the guardrails at the upstream and downstream of the construction section to restore the water flow capacity of the canal section. Lower the gate in front of the upstream trough and then lower the gate behind the downstream trough. At this time, the upstream water will be discharged from the canal. After all the guardrails are removed, slide the plunger into the trough from top to bottom.

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