Construction method and structure of novel muck pool

Abstract

The invention relates to the technical field of muck pool construction, in particular to a construction method and a structure of a novel muck pool. The method specifically comprises the following steps that S1, a plurality of steel sheet piles are provided, and the multiple steel sheet piles are vertically inserted and driven into the edge of the design position of the muck pool in sequence; s2, soil at the designed position of the muck pool is dug out, so that one sides of the multiple steel sheet piles leak out; s3, after the soil is dug out, concrete is poured at the bottom of the muck pool, so that a base for fixing the bottoms of the steel sheet piles is formed; s4, concrete is poured along the edge of the muck pool to form a ring beam; and S5, concrete is poured between the two long edges of the muck pool to form a supporting beam. The construction method has the beneficial effects that the steel sheet piles are inserted and driven in the designed side wall positions of the muck pool, so that the steel sheet piles form a whole and serve as the side wall of the muck pool, sloping is not needed in the construction process, the construction occupied area is smaller, the construction method is suitable for the construction environment with a narrow site, meanwhile, other construction is not affected, and the overall construction period is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of slag pond construction, in particular to a novel slag pond construction method and structure. Background Art

[0002] During the construction of urban underground stations, it is necessary to set up a slag pit to temporarily store the slag that has not been removed in time when the trench is excavated. The slag pit is excavated deep and the station is often located on the main road of the city. How to arrange the construction reasonably is a major focus of the station enclosure structure construction.

[0003] At present, the construction of the slag pit usually involves selecting a site on site, then laying out the lines and slopes. The excavation of the slag pit often needs to reach a depth of about 3m, especially when the site is small and the available space is limited, and even deeper excavation is required. The traditional construction method is to use slope excavation to break the excavation, and then support the formwork to construct the reinforced concrete side wall. Slope cutting requires moving the location of the slag pit to the side away from the fence to make room for the excavation and slope cutting of the slag pit. At the same time, affected by the construction period, the construction time of this structure is about 6 days, and backfilling can only be done after the maintenance intensity is increased. At the same time, due to the occupation of the road construction affecting other operations on the site, the construction period needs to be delayed by more than ten days.

[0004] Therefore, the present invention proposes a novel slag pond construction method and structure. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a new construction method and structure of a slag pit, so as to solve the problem that the existing slag pit adopts slope excavation and needs to use reinforced concrete for pouring construction on the side wall, thereby prolonging the construction period.

[0006] The technical solution to achieve the above purpose is:

[0007] The present invention provides a novel construction method of a slag pool, which specifically comprises the following steps:

[0008] S1: providing a plurality of steel sheet piles, and sequentially vertically inserting the plurality of steel sheet piles into the edge of the designed position of the slag pit;

[0009] S2: digging out the soil at the designed position of the slag pool so that one side of the plurality of steel sheet piles leaks out;

[0010] S3: After the soil is excavated, concrete is poured at the bottom of the soil pool to form a base for fixing the bottom of the steel sheet pile;

[0011] S4: pouring concrete along the edge of the slag pool to form a ring beam, wherein the ring beam wraps the top of the steel sheet pile;

[0012] S5: pouring concrete between the two long sides of the slag pool to form a support beam, and both ends of the support beam are supported on the inner sides of the corresponding steel sheet piles.

[0013] Furthermore, locking openings are formed at corresponding ends of the steel sheet piles, and when the steel sheet piles are inserted, the locking openings of two adjacent steel sheet piles are engaged with each other so that the plurality of steel sheet piles form a whole at the side wall of the slag pit.

[0014] Furthermore, before inserting the steel sheet piles, mixed oil is provided and evenly applied to the locking openings of the steel sheet piles to achieve the effects of water seepage prevention and lubrication.

[0015] Furthermore, when digging out the soil in the slag pit, when the digging depth reaches 1m, a temporary cross brace is provided, and the temporary cross brace is supported between two corresponding steel sheet piles to prevent the steel sheet piles from collapsing, and then the soil is continued to be dug;

[0016] When the base is poured and reaches the designed strength, the temporary cross brace is removed.

[0017] Furthermore, when pouring the base, a plurality of rectangular templates are provided and supported at intervals at the bottom of the slag pool to insulate the concrete, so that the base after pouring is formed with a plurality of spaced-apart water-permeable openings.

[0018] Furthermore, after the steel sheet piles are driven to a specified depth, the top of the steel sheet piles is 30 cm above the ground, and the ring beam and the support beam are cast and formed at the portion of the steel sheet piles that is above the ground.

[0019] Further, the specific construction steps of the ring beam are as follows:

[0020] Providing a plurality of first main bars, arranging the plurality of first main bars along the edge of one side corresponding to the slag pool, and arranging three first main bars horizontally on each side edge, and the three first main bars are spaced apart from each other;

[0021] Providing a plurality of hook bars, bending a first end of the hook bar to form a bent portion, and hooking the bent portion on the corresponding first main bar, and fixing a second end on the corresponding steel sheet pile;

[0022] The formwork is then erected and the concrete poured.

[0023] Furthermore, the specific construction steps of the support beam are as follows:

[0024] Providing four second main bars, arranging the four second main bars between corresponding two of the steel sheet piles, and fixing two ends of the second main bars to the corresponding steel sheet piles;

[0025] Providing a plurality of stirrups, and fixing the plurality of stirrups at intervals on the outside of the second main reinforcement;

[0026] Set up formwork and pour concrete.

[0027] The present invention also provides a novel structure of a slag pool, comprising:

[0028] A plurality of steel sheet piles arranged on the side wall of the slag pool, wherein the plurality of steel sheet piles are connected end to end to form a whole;

[0029] Casting a base formed at the bottom of the slag pool, wherein the base supports the bottom of the steel sheet piles;

[0030] Casting a ring beam formed on the top of the steel sheet pile, wherein the ring beam wraps the top of the steel sheet pile;

[0031] A support beam is cast between two corresponding steel sheet piles, and the support beam supports the top of the steel sheet piles.

[0032] Furthermore, a plurality of water-permeable openings distributed at intervals are formed on the base, and the accumulated water in the slag pool seeps into the land through the water-permeable openings.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] By inserting steel sheet piles at the designed side wall position of the slag pit, the steel sheet piles form a whole and serve as the side wall of the slag pit. There is no need to slope during the construction process, and the construction occupies less land. It is suitable for construction environments with relatively narrow sites. At the same time, it does not affect other construction, thereby shortening the overall construction period.

[0035] The site selection of the slag pond is in line with the design of the later structural construction. The model of the steel sheet pile is reasonably selected, and the steel sheet piles are continued to be used to improve their long-term utilization and achieve a short-term "permanent and temporary combination". BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a top cross-sectional view of the novel slag pit of the present invention.

[0037] Figure 2 This is a bottom cross-sectional view of the new type of slag pond of the present invention.

[0038] Figure 3 This is a cross-sectional view of the ring beam of the new slag pit of the present invention.

[0039] Figure 4 This is a cross-sectional view of the support beam of the new slag pit of the present invention.

[0040] Figure 5 This is a schematic diagram of the steel sheet pile structure of the new type of slag pond of the present invention.

[0041] Legend: 1. Slag pool; 2. Steel sheet pile; 3. Support beam; 4. Base; 5. Water inlet; 6. Ring beam; 7. First main reinforcement; 8. Hook reinforcement; 9. Support beam; 10. Second main reinforcement; 11. Stirrups; 12. Locking mouth. DETAILED DESCRIPTION

[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0043] See also Figure 1 The present invention provides a new construction method and structure of a slag pit, which solves the problem that the existing slag pit adopts slope excavation and needs to use reinforced concrete for pouring construction on the side wall, thereby prolonging the construction period. For a slag pit with a steel sheet pile structure, it takes 2 days to construct the steel sheet piles, 1 day to excavate, and 1 day to construct the bottom lock feet, ring beam, and support beam, for a total of 4 days; for a traditional reinforced concrete slag pit, it takes 2 days for slope excavation, 1 day to pour the bottom plate, 4 days to construct the side wall, 3 days for the strength to rise to the backfill strength, and 1 day for backfill compaction, for a total of 11 days. The steel sheet pile slag pit improves the efficiency by about 7 days compared with the reinforced concrete slag pit, effectively saving construction time.

[0044] By inserting steel sheet piles at the designed side wall position of the slag pit, the steel sheet piles form a whole and serve as the side wall of the slag pit. There is no need to slope during the construction process, and the construction occupies less land. It is suitable for construction environments with relatively narrow sites. At the same time, it does not affect other construction, thereby shortening the overall construction period.

[0045] The site selection of the slag pond is in line with the design of the later structural construction. The model of the steel sheet pile is reasonably selected, and the steel sheet piles are continued to be used to improve their long-term utilization and achieve a short-term "permanent and temporary combination".

[0046] The construction method and structure of a novel slag pond of the present invention are described below in conjunction with the accompanying drawings.

[0047] See also Figure 1 , showing the top cross-sectional view of the novel soil pit of the present invention. Figure 2 , showing the bottom cross-section of the new type of slag pond of the present invention. Figure 1 and Figure 2 , the construction method and structure of a new type of slag pond of the present invention are explained.

[0048] like Figure 1 and Figure 2 As shown, a novel construction method of a slag pond of the present invention specifically comprises the following steps:

[0049] S1: providing a plurality of steel sheet piles 2, and sequentially inserting the plurality of steel sheet piles 2 vertically into the edge of the designed position of the slag pool 1;

[0050] S2: Digging out the soil at the designed position of the slag pool 1 so that one side of the plurality of steel sheet piles 2 leaks out;

[0051] S3: After the soil is excavated, concrete is poured at the bottom of the soil pool 1 to form a base 4 for fixing the bottom of the steel sheet pile 2;

[0052] S4: pouring concrete along the edge of the slag pool 1 to form a ring beam 6, wherein the ring beam 6 wraps the top of the steel sheet pile 2;

[0053] S5: pouring concrete between the two long sides of the slag pool 1 to form a support beam 9 , and both ends of the support beam 9 are supported on the inner sides of the corresponding steel sheet piles 2 .

[0054] In a specific embodiment, 12m long Larsen 4 type steel sheet piles are used at the two long sides of the slag pit 1, and 6m long Larsen 3 type steel sheet piles are used at the remaining sides.

[0055] Specifically, the steel sheet piles 2 are U-shaped, and hook portions are formed at both ends. The directions of two adjacent steel sheet piles 2 are opposite and the hook portions correspond to each other.

[0056] In a specific embodiment, before driving the steel sheet piles 2, a pile driver is provided, and then the steel sheet piles 2 are driven by using the pile driver and a vibration hammer pile driving method.

[0057] In a specific embodiment, before inserting the steel sheet piles 2, the original road surface layer at the designed position of the slag pool 1 is broken. First, a cutting machine is used to cut the road surface, and the depth of the cutting must be greater than 10 cm. After the cutting is completed, an excavator with a blasting hammer is used to break the road surface to expose the land, thereby facilitating the next step of construction.

[0058] In a specific embodiment, locking openings 12 are formed at corresponding ends of the steel sheet piles 2. When the steel sheet piles 2 are inserted, the locking openings 12 of two adjacent steel sheet piles 2 are engaged with each other so that the plurality of steel sheet piles 2 form a whole at the side wall of the slag pool 1.

[0059] In a specific embodiment, before the steel sheet pile 2 is inserted, mixed oil is provided and evenly applied to the locking opening 12 of the steel sheet pile 2 to achieve the effect of water seepage prevention and lubrication.

[0060] In a specific embodiment, the mixed oil is a mixture of butter, dry bentonite and dry sawdust, and the volume ratio of butter, dry bentonite and dry sawdust is 5:5:3.

[0061] In a specific embodiment, when digging out the soil in the slag pit 1, when the digging depth reaches 1m, a temporary cross brace is provided, and the temporary cross brace is supported between two corresponding steel sheet piles 2 to prevent the steel sheet piles 2 from collapsing, and then the soil is continued to be dug;

[0062] When the base 4 is poured and reaches the designed strength, the temporary cross brace is removed.

[0063] In a specific embodiment, when pouring the base 4, a plurality of rectangular templates are provided and spaced apart at the bottom of the soil pool 1 to insulate the concrete, so that after the pouring, the base 4 forms a plurality of spaced apart water permeable openings 5. There are four water permeable openings 5, each of which is 2 m in length and width.

[0064] In a specific implementation, the concrete used to cast the base 4 is C15 concrete, the thickness of the base 4 formed by casting is 15 cm, and the formwork used during casting is plywood.

[0065] In a specific embodiment, after the steel sheet piles 2 are driven to a specified depth, the top of the steel sheet piles 2 is 30 cm above the ground, and the ring beam 6 and the support beam 9 are cast and formed at the portion of the steel sheet piles 2 that is above the ground.

[0066] In a specific implementation, the specific construction steps of the ring beam 6 are as follows:

[0067] Providing a plurality of first main reinforcements 7, laying the plurality of first main reinforcements 7 along the corresponding side edge of the slag pool 1, and laying three first main reinforcements 7 horizontally on each side edge, and the three first main reinforcements 7 are spaced apart vertically;

[0068] Providing a plurality of hook bars 8, bending a first end of the hook bar 8 to form a bent portion, and hooking the bent portion on the corresponding first main bar 7, and fixing a second end on the corresponding steel sheet pile 2;

[0069] The formwork is then erected and the concrete poured.

[0070] In a specific embodiment, the diameter of the first main reinforcement 7 is 14 mm, the height of the ring beam 6 formed by casting is 30 cm, the width is 40 cm, and the length is the same as the length of the corresponding side of the slag pool 1; the template used during casting is plywood, and the concrete used is C30 concrete.

[0071] In a specific implementation, the specific construction steps of the support beam 9 are as follows:

[0072] Providing four second main reinforcements 10, arranging the four second main reinforcements 10 between corresponding two of the steel sheet piles 2, and fixing both ends of the second main reinforcement 10 to the corresponding steel sheet piles 2;

[0073] Providing a plurality of stirrups 11, and fixing the plurality of stirrups 11 at intervals on the outside of the second main reinforcement 10;

[0074] Set up formwork and pour concrete.

[0075] In a specific embodiment, the diameter of the second main reinforcement 10 is 14 mm, the diameter of the stirrup 11 is 8 mm, and the support beam 9 is arranged in the middle of the slag pool 1 .

[0076] In a preferred embodiment, before the second main reinforcement 10 is laid out, both ends of the second main reinforcement 10 are bent to form hooking portions, and when the second main reinforcement 10 is laid out, the hooking portions are hooked on the corresponding first main reinforcement 7 .

[0077] The present invention also provides a novel structure of a slag pool, comprising:

[0078] A plurality of steel sheet piles 2 arranged on the side wall of the slag pool 1, wherein the plurality of steel sheet piles 2 are connected end to end to form a whole;

[0079] A base 4 is cast at the bottom of the slag pool 1, and the base 4 supports the bottom of the steel sheet pile 2;

[0080] Casting a ring beam 6 formed on the top of the steel sheet pile 2, wherein the ring beam 6 wraps the top of the steel sheet pile 2;

[0081] A support beam 9 is cast between two corresponding steel sheet piles 2 , and the support beam 9 supports the tops of the steel sheet piles 2 .

[0082] In a specific embodiment, a plurality of water-permeable openings 5 ​​distributed at intervals are formed on the base 4 , and the accumulated water in the muck pool 1 infiltrates into the land through the water-permeable openings 5 ​​.

[0083] The construction process of a novel slag pond of the present invention is described in detail below.

[0084] Laying out and positioning: Use GPS to measure and lay out the bedding edge line. After confirming the bedding edge line, lay out the position of the slag pool 1 and mark it with white lime.

[0085] Exploration and removal of the original road surface layer: After completing the position survey, use detection instruments to detect pipelines at the location of slag pool 1 to ensure that no pipelines are missed in the early site selection. After verification, use a cutting machine to cut the original road surface with a depth of more than 10 cm. After the cutting is completed, use an excavator with a blasting hammer to break the road surface.

[0086] Driving steel sheet piles 2: After the steel sheet piles 2 are transported to the construction site, they are cleaned and arranged, and the debris in the lock mouth 12 (such as welding slag, waste filler, etc.) is removed, and the defective parts are repaired, and the steel sheet piles 2 are treated with rust and corrosion prevention on site. Then the lock mouth 12 is lubricated and anti-seepage measures are taken. For the steel sheet piles 2 that have passed the inspection, in order to ensure that the steel sheet piles 2 can be smoothly inserted and removed during the construction process and to increase the anti-seepage performance of the steel sheet piles 2 when in use, the mixed oil is evenly applied to the lock mouth 2 of each steel sheet pile 2.

[0087] The surveyor determines the axis, leaves the working surface required for future construction, and determines the construction position of the steel sheet pile 2. After the axis is determined, the starting and end points of the pile driving are set on site, and the observation point for positioning the axis is set on the extension line of the starting point.

[0088] The steel sheet piles 2 are driven in by a vibrating hammer piling method. The steel sheet piles 2 are driven in piece by piece from the starting point to the end point along a set route using a pile driver. The top of the steel sheet piles 2 is 30 cm above the ground.

[0089] Excavation: After the steel sheet piles 2 are planted, the excavation of the slag pool 1 is carried out by using an excavator in combination with manual excavation. When the excavation depth reaches 1m, a temporary horizontal brace is set inside the steel sheet piles 2. After the temporary horizontal brace is reinforced and locked, the excavation continues downward. The excavation is continued until the bottom of the slag pool 1 is at the designed depth, and the bottom of the slag pool 1 is leveled manually.

[0090] Bottom locking construction: After the steel sheet piles 2 are driven and excavated, the bottom of the slag pool 1 is hardened. The 15cm thick C15 concrete is used for locking. Plywood is used to support the formwork during pouring. Four water permeable openings 5 ​​with a length and width of 2m are reserved at the bottom.

[0091] Then the ring beam 6 and the support beam 9 are cast.

[0092] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A new type of construction method for a slag pond, characterized in that: The specific steps include: S1: providing a plurality of steel sheet piles (2), and sequentially vertically inserting the plurality of steel sheet piles (2) into the edge of the designed position of the slag pit (1); S2: digging out the soil at the designed position of the slag pool (1) so that one side of the plurality of steel sheet piles (2) leaks out; S3: After the soil is excavated, concrete is poured at the bottom of the soil pool (1) to form a base (4) for fixing the bottom of the steel sheet pile (2); S4: pouring concrete along the edge of the slag pool (1) to form a ring beam (6), wherein the ring beam (6) wraps the top of the steel sheet pile (2); S5: pouring concrete between the two long sides of the slag pool (1) to form a support beam (9), with both ends of the support beam (9) supported on the inner side of the corresponding steel sheet pile (2).

2. The construction method of a new type of slag pond according to claim 1 is characterized in that: The steel sheet piles (2) are provided with locking openings (12) at corresponding ends. When the steel sheet piles (2) are driven in, the locking openings (12) of two adjacent steel sheet piles (2) are engaged with each other so that the plurality of steel sheet piles (2) are integrated at the side wall of the slag pool (1).

3. The construction method of a new type of slag pond according to claim 2 is characterized in that: Before inserting the steel sheet pile (2), mixed oil is provided and evenly applied to the locking opening (12) of the steel sheet pile (2) to achieve the effects of water seepage prevention and lubrication.

4. The construction method of a new type of slag pond according to claim 1 is characterized in that: When digging out the soil in the slag pit (1), when the digging depth reaches 1m, a temporary cross brace is provided, and the temporary cross brace is set between two corresponding steel sheet piles (2) to prevent the steel sheet piles (2) from collapsing, and then the soil is continued to be dug; When the base (4) is poured and reaches the designed strength, the temporary cross brace is removed.

5. The construction method of a novel slag pond according to claim 1 is characterized in that: When pouring the base (4), a plurality of rectangular templates are provided and spaced apart at the bottom of the slag pool (1) to insulate the concrete, so that after the pouring is completed, the base (4) forms a plurality of spaced apart water permeable openings (5).

6. The construction method of a novel slag pond according to claim 1 is characterized in that: After the steel sheet pile (2) is driven to a specified depth, the top of the steel sheet pile (2) is 30 cm above the ground, and the ring beam (6) and the support beam (9) are cast and formed at the portion of the steel sheet pile (2) that is above the ground.

7. The construction method of a new type of slag pond according to claim 6 is characterized by: The specific construction steps of the ring beam (6) are as follows: Providing a plurality of first main reinforcements (7), arranging the plurality of first main reinforcements (7) along the corresponding side edge of the slag pool (1) through the entire length, and arranging three first main reinforcements (7) horizontally on each side edge, and the three first main reinforcements (7) are spaced apart vertically; Providing a plurality of hook bars (8), bending a first end of the hook bar (8) to form a bent portion, and hooking the bent portion on the corresponding first main bar (7), and fixing a second end on the corresponding steel sheet pile (2); The formwork is then erected and the concrete poured.

8. The construction method of a novel slag pond according to claim 6 is characterized by: The specific construction steps of the support beam (9) are as follows: Providing four second main reinforcements (10), arranging the four second main reinforcements (10) between corresponding two of the steel sheet piles (2), and fixing two ends of the second main reinforcements (10) to the corresponding steel sheet piles (2); Providing a plurality of stirrups (11), and fixing the plurality of stirrups (11) at intervals on the outside of the second main reinforcement (10); Set up formwork and pour concrete.

9. A novel soil pool structure according to claim 1, characterized in that: include: A plurality of steel sheet piles (2) arranged on the side wall of the slag pool (1), wherein the plurality of steel sheet piles (2) are connected end to end to form a whole; A base (4) is cast at the bottom of the slag pool (1), wherein the base (4) supports the bottom of the steel sheet pile (2); Casting a ring beam (6) formed on the top of the steel sheet pile (2), wherein the ring beam (6) wraps the top of the steel sheet pile (2); A support beam (9) is cast between two corresponding steel sheet piles (2), and the support beam (9) supports the top of the steel sheet piles (2).

10. The structure of the new type of slag pond according to claim 9 is characterized by: A plurality of water permeable openings (5) distributed at intervals are formed on the base (4), and the accumulated water in the slag pool (1) seeps into the ground through the water permeable openings (5).

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