Construction method and structure of a new type of slag pool

Abstract

The present application relates to the technical field of construction of slag pool, in particular to a new slag pool construction method and structure thereof. Specifically comprising the following steps: S1: providing a plurality of steel sheet piles, sequentially vertically inserting and driving the plurality of steel sheet piles into the edge of the slag pool design position; S2: excavating the soil at the slag pool design position to make one side of the plurality of steel sheet piles leak out; S3: after the soil is excavated, pouring concrete at the bottom of the slag pool to form a base for fixing the bottom of the steel sheet pile; S4: pouring concrete along the edge of the slag pool to form a ring beam; S5: pouring concrete between the two long sides of the slag pool to form a support beam. Advantage: by inserting and driving steel sheet piles at the sidewall position of the slag pool design, the steel sheet piles form an integral whole and serve as the sidewall of the slag pool, without the need for slope during construction, with less construction land occupation, suitable for construction environment with relatively narrow site, while not affecting other construction, thereby shortening the overall construction period.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slag pool construction, in particular to a new slag pool construction method and structure thereof. BACKGROUND

[0002] During the construction of an urban underground station, a slag pool needs to be set up to temporarily store the slag that cannot be timely removed during the excavation of a slot section. The slag pool is excavated to a relatively deep depth, and the station is often located on a main urban road. How to reasonably arrange and construct is a major focus during the construction of the station enclosure structure.

[0003] Currently, the slag pool construction is usually performed by selecting a site in a field, then performing line positioning and slope edge line positioning. The slag pool excavation needs to reach a depth of about 3 m. When the site is narrow, the available space is limited, and even deeper excavation is required. The traditional construction method is to perform slope excavation to break and excavate, and then perform formwork to construct the reinforced concrete side wall. The slope needs to move the position of the slag pool to a side away from the enclosure to create space for the slope excavation of the slag pool. At the same time, due to the influence of the construction period node, the construction time of this structure is about 6 days. After the curing strength is increased, the backfilling can be performed. Due to the influence of the road occupation construction on other operations in the field, the construction period needs to be delayed for more than ten days.

[0004] Therefore, the present application provides a new slag pool construction method and structure. SUMMARY

[0005] The present application aims to overcome the defects of the prior art, provide a new slag pool construction method and structure, and solve the problem that the existing slag pool adopts slope excavation and needs to use reinforced concrete to perform pouring construction on the side wall, thereby prolonging the construction period.

[0006] The technical solution for achieving the above-mentioned purpose is as follows:

[0007] The present application provides a new slag pool construction method, which specifically includes the following steps:

[0008] S1: A plurality of steel sheet piles are provided, and the plurality of steel sheet piles are vertically inserted into the edge of the slag pool design position in sequence;

[0009] S2: The soil at the slag pool design position is excavated, so that one side of the plurality of steel sheet piles is exposed;

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

[0011] S4: Concrete is poured along the edge of the slag pool to form a ring beam, and the ring beam wraps the top end of the steel sheet pile;

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

[0013] Further, the steel sheet pile is formed with a lock at both ends, and when the steel sheet pile is inserted, the locks of two adjacent steel sheet piles are clamped to form a whole of the steel sheet piles at the side wall of the slag pool.

[0014] Further, before the steel sheet pile is inserted, mixed oil is provided and uniformly applied to the lock of the steel sheet pile to achieve the effects of water seepage prevention and lubrication.

[0015] Further, when the soil in the slag pool is excavated, when the excavation depth reaches 1m, a temporary cross brace is provided and supported between the corresponding two steel sheet piles to prevent the steel sheet pile from collapsing, and then the soil excavation is continued.

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

[0017] Further, when the base is poured, a plurality of rectangular forms are provided and are spaced apart and supported on the bottom of the slag pool to insulate the concrete, so that the base after pouring forms a plurality of spaced apart water permeable openings.

[0018] Further, after the steel sheet pile is inserted to the specified depth, the top end of the steel sheet pile is 30cm above the ground, and the ring beam and the support beam are poured and formed on the part of the steel sheet pile above the ground.

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

[0020] A plurality of first main bars are provided, and the first main bars are arranged along the corresponding side edge of the slag pool, and three first main bars are arranged horizontally on each side edge, and the three first main bars are arranged in an upper and lower spaced apart manner.

[0021] A plurality of hook bars are provided, the first end of the hook bar is bent to form a bent portion, the bent portion is hooked on the corresponding first main bar, and the second end is fixedly connected to the corresponding steel sheet pile.

[0022] Then the formwork is supported and the concrete is poured.

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

[0024] Four second main bars are provided, the four second main bars are arranged between the corresponding two steel sheet piles, and the two ends of the second main bars are fixed to the corresponding steel sheet piles.

[0025] A plurality of stirrups are provided and fixed at intervals on the outside of the second main reinforcement;

[0026] A formwork is set up and concrete is poured.

[0027] The application also provides a novel structure of a muck pit, comprising:

[0028] A plurality of steel sheet piles are arranged on the sidewall of the muck pit, and the plurality of steel sheet piles are connected end to end to form a whole.

[0029] A base formed at the bottom of the muck pit is poured, and the base supports the bottom of the steel sheet pile;

[0030] A ring beam formed at the top of the steel sheet pile is poured, and the ring beam wraps the top end of the steel sheet pile;

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

[0032] Further, a plurality of water permeable openings are formed on the base and distributed at intervals, and the accumulated water in the muck pit seeps into the land through the water permeable openings.

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

[0034] By inserting the steel sheet pile at the sidewall position of the muck pit design, the steel sheet pile forms a whole and serves as the sidewall of the muck pit, without the need for a slope during construction, less land occupation, suitable for narrow construction environment, and without affecting other construction, thereby shortening the overall construction period.

[0035] The muck pit site is designed to match the later structure construction, the model of the steel sheet pile is reasonably selected, the steel sheet pile is used, the long-term usability is improved, and the short-term "permanent and temporary combination" is realized. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a top sectional view of the novel muck pit of the application.

[0037] Figure 2 It is a bottom sectional view of the novel muck pit of the application.

[0038] Figure 3 It is a ring beam sectional view of the novel muck pit of the application.

[0039] Figure 4 It is a support beam sectional view of the novel muck pit of the application.

[0040] Figure 5 It is a schematic view of the steel sheet pile structure of the novel muck pit of the application.

[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, hooked reinforcement; 10, second main reinforcement; 11, stirrup; 12, lock. DETAILED DESCRIPTION

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

[0043] Referring to Figure 1 , the present application provides a new type of slag pool construction method and structure, which solves the problem that the existing slag pool adopts slope excavation and needs to use reinforced concrete for pouring construction on the side wall, thereby prolonging the construction period. The steel sheet pile structure slag pool is used, the time for constructing the steel sheet pile is 2 days, the time for excavation is 1 day, the time for constructing the bottom lock foot and the ring beam and the support beam is 1 day, and the total time is 4 days; the traditional reinforced concrete slag pool needs 2 days for slope excavation, 1 day for pouring the bottom plate, 4 days for constructing the side wall, 3 days for rising the strength to the backfill strength, and 1 day for backfill tamping, and the total time is 11 days. The steel sheet pile slag pool improves the efficiency by about 7 days compared with the reinforced concrete slag pool, effectively saving the construction period.

[0044] By inserting the steel sheet pile at the position of the side wall of the slag pool design, the steel sheet pile forms an integral whole and serves as the side wall of the slag pool, without the need for slope during construction, less land occupation during construction, suitable for narrow construction environment, and without affecting other construction, thereby shortening the overall construction period.

[0045] The slag pool site selection is in line with the design of the later stage structure construction, the model of the steel sheet pile is reasonably selected, the steel sheet pile is used, the long-term usability is improved, and the short-term "permanent and temporary combination" is realized.

[0046] The construction method and structure of the new type of slag pool will be described below in conjunction with the drawings.

[0047] Referring to Figure 1 , the top sectional view of the new type of slag pool is shown. Referring to Figure 2 , the bottom sectional view of the new type of slag pool is shown. The construction method and structure of the new type of slag pool will be described below in conjunction with Figure 1 and Figure 2 .

[0048] As shown in Figure 1 and Figure 2 , the construction method of the new type of slag pool comprises the following steps:

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

[0050] S2: excavate the soil at the design position of the slag pool 1 to make one side of the plurality of steel sheet piles 2 leak out;

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

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

[0053] S5: pour concrete between the two long edges of the slag pool 1 to form a support beam 3 that is supported at both ends on the inner side of the corresponding steel sheet pile 2.

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

[0055] Specifically, the steel sheet pile 2 is U-shaped, and the two ends are formed with hooking parts, and the two adjacent steel sheet piles 2 are opposite in direction and the hooking parts correspond to each other.

[0056] In a specific embodiment, before the steel sheet pile 2 is inserted, a pile driver is provided, and then the steel sheet pile 2 is inserted using the pile driver and a vibratory hammer pile driving method.

[0057] In a specific embodiment, before the steel sheet pile 2 is inserted, the original road surface layer at the design position of the slag pool 1 is broken, a cutting machine is first used to cut the road surface, and the depth of the cut is greater than 10cm, and after the cut is completed, an excavator with a hammer is used to break the road surface, so that the land is exposed, facilitating the next step of construction.

[0058] In a specific embodiment, the steel sheet pile 2 is formed with a lock 12 at the corresponding two ends, and when the steel sheet pile 2 is inserted, the locks 12 of the two adjacent steel sheet piles 2 are clamped to make 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, a mixture of oil is provided and evenly applied to the lock 12 of the steel sheet pile 2 to achieve the effects of water seepage prevention and lubrication.

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

[0061] In one embodiment, when excavating the soil in the muck pit 1, temporary cross braces are provided when the depth of excavation reaches 1 m, the temporary cross braces are arranged between two corresponding steel sheet piles 2 to prevent the steel sheet piles 2 from collapsing, and then the soil excavation is continued.

[0062] When the base 4 is poured and reaches the design strength, the temporary cross braces are removed.

[0063] In one embodiment, when pouring the base 4, a plurality of rectangular formworks are provided and arranged at intervals on the bottom of the muck pit 1 to insulate the concrete, so that the base 4 after pouring forms a plurality of spaced-apart water permeable openings 5. The water permeable openings 5 have four, length and width are 2m.

[0064] In one embodiment, the concrete poured for the base 4 is C15 concrete, the thickness of the base 4 formed by pouring is 15 cm, and the formwork used when pouring is plywood.

[0065] In one embodiment, after the steel sheet piles 2 are driven to the specified depth, the top ends of the steel sheet piles 2 are 30 cm above the ground, and the ring beam 6 and the support beam 3 are poured to form the part of the steel sheet piles 2 above the ground.

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

[0067] A plurality of first main reinforcement bars 7 are provided, the first main reinforcement bars 7 are arranged along the corresponding side edge of the muck pit 1, and three first main reinforcement bars 7 are arranged horizontally at intervals on each side edge.

[0068] A plurality of hooked reinforcement bars 8 are provided, the first end of the hooked reinforcement bar 8 is bent to form a bent portion, and the bent portion is hooked on the corresponding first main reinforcement bar 7, and the second end is fixedly connected to the corresponding steel sheet pile 2;

[0069] Then the formwork is arranged and the concrete is poured.

[0070] In one embodiment, the diameter of the first main reinforcement bar 7 is 14 mm, the height of the ring beam 6 formed by pouring is 30 cm, the width is 40 cm, and the length is the same as the length of the corresponding side of the muck pit 1; the formwork used when pouring is plywood, and the concrete used is C30 concrete.

[0071] In one embodiment, the specific construction steps of the support beam 3 are as follows:

[0072] Four second main bars 10 are provided, and the four second main bars 10 are arranged between the corresponding two steel sheet piles 2, and the two ends of the second main bars 10 are fixed with the corresponding steel sheet piles 2;

[0073] A plurality of stirrups 11 are provided, and the plurality of stirrups 11 are fixed at intervals on the outside of the second main bars 10;

[0074] A formwork is arranged and concrete is poured.

[0075] In an embodiment, the diameter of the second main bars 10 is 14 mm, the diameter of the stirrups 11 is 8 mm, and the support beams 3 are arranged in the middle of the muck pit 1.

[0076] In a preferred embodiment, before the second main bars 10 are arranged, the two ends of the second main bars 10 are bent to form hooking parts, and when the second main bars 10 are arranged, the hooking parts are hooked on the corresponding first main bars 7.

[0077] The application also provides a novel structure of a muck pit, comprising:

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

[0079] A base 4 formed at the bottom of the muck pit 1 is poured, and the base 4 supports the bottom of the steel sheet piles 2;

[0080] A ring beam 6 formed at the top of the steel sheet piles 2 is poured, and the ring beam 6 wraps the top end of the steel sheet piles 2;

[0081] A support beam 3 formed between the corresponding two steel sheet piles 2 is poured, and the support beam 3 supports the top of the steel sheet piles 2.

[0082] In an embodiment, a plurality of water permeable openings 5 are formed on the base 4 and are distributed at intervals, and the accumulated water in the muck pit 1 penetrates into the land through the water permeable openings 5.

[0083] The construction process of the novel muck pit of the application is described in detail below.

[0084] Line positioning: GPS is used to measure and lay the paving lines, after the paving lines are confirmed, the position of the muck pit 1 is laid out, and white lime is used for marking.

[0085] Exploration, break the original pavement layer: after the completion of the position setting out, using detection instrument on the position of the slag pool 1 pipeline detection, to ensure that the early site without missing pipeline, review no error to the original road surface using cutting machine for road cutting, cutting depth greater than 10 cm, after cutting using the excavator with cannon hammer to the road surface for break.

[0086] Steel sheet pile 2: steel sheet pile 2 is transported to the site, clean up, remove the lock 12 inside the sundries (such as welding slag, waste filler, etc.), and the defect site to repair, in the field of steel sheet pile 2 for rust and corrosion prevention treatment. Then the lock 12 is lubricated and anti-seepage measures, for the inspection of qualified steel sheet pile 2, to ensure that the steel sheet pile 2 can be smoothly inserted and pulled during construction, and to increase the anti-seepage performance of the steel sheet pile 2 in use, evenly smear mixed oil at the lock 2 of each steel sheet pile 2.

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

[0088] The steel sheet pile 2 is inserted and driven by using a vibrating hammer piling method. The steel sheet pile 2 is inserted and driven from the starting point to the end point according to the set line by using a piling machine, and the top end of the steel sheet pile 2 is 30 cm above the ground.

[0089] Excavation: after the steel sheet pile 2 is planted, the slag pool 1 is excavated by using excavator and manual excavation method. After the excavation depth reaches 1 m, a temporary cross brace is set on the inside of the steel sheet pile 2. After the temporary cross brace is tightened, the excavation continues downward. The excavation stops when the pool bottom design depth of the slag pool 1 is reached, and the bottom of the slag pool 1 is leveled by using manual method.

[0090] Bottom lock foot construction: after the steel sheet pile 2 is completed and excavated, the bottom of the slag pool 1 is hardened. The hardening is performed by using 15 cm thick C15 concrete to lock the foot. When pouring, plywood formwork is used. Four water outlets 5 with a length and width of 2 m are reserved at the bottom.

[0091] Then the ring beam 6 and the support beam 3 are poured.

[0092] The above embodiments of the application are described in detail in combination with the drawings. Those skilled in the art can make various changes to the application according to the above description. Therefore, some details in the embodiments should not be construed as limiting the application, and the scope of protection of the application is defined by the appended claims.

Claims

1. A method of constructing a new sludge lagoon, characterized by: Specifically comprising the following steps: S1: providing a plurality of steel sheet piles (2), sequentially vertically inserting a plurality of the steel sheet piles (2) into the edge of the designed position of the muck pool (1); S2: excavating the soil at the designed position of the muck pool (1) so that one side of a plurality of the steel sheet piles (2) leaks out; S3: after the soil is excavated, pouring concrete at the bottom of the muck 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 muck pool (1) to form a ring beam (6), which wraps the top end of the steel sheet pile (2); S5: pouring concrete between the two long sides of the muck pool (1) to form a support beam (3), the two ends of the support beam (3) are supported on the inner side of the corresponding steel sheet pile (2). When pouring the base (4), a plurality of rectangular formworks are provided and are spaced and supported on the bottom of the muck pool (1) to insulate the concrete, so that the base (4) after pouring forms a plurality of spaced water permeable openings (5).

2. A method of constructing a new sludge lagoon according to claim 1, characterized in that: The corresponding two ends of the steel sheet pile (2) form a lock (12), when inserting the steel sheet pile (2), the locks (12) of the two adjacent steel sheet piles (2) are clamped to form a whole at the side wall of the muck pool (1).

3. A method of constructing a new type of sludge lagoon according to claim 2, characterized in that: Before inserting the steel sheet pile (2), mixed oil is provided and evenly applied to the lock (12) of the steel sheet pile (2) to achieve the effect of preventing water seepage and lubrication.

4. The method of constructing a new sludge lagoon according to claim 1, wherein: When excavating the soil in the muck pool (1), when the excavation depth reaches 1m, a temporary cross brace is provided and supported between the corresponding two steel sheet piles (2) to prevent the steel sheet pile (2) from collapsing, and then the soil is continuously excavated; When the base (4) is poured and reaches the designed strength, the temporary cross brace is removed.

5. A method of constructing a new type of sludge lagoon according to claim 1, characterized in that: After the steel sheet pile (2) is inserted to the specified depth, the top end of the steel sheet pile (2) is 30cm above the ground, and the ring beam (6) and the support beam (3) are poured and formed on the part of the steel sheet pile (2) above the ground.

6. A method of constructing a new type of sludge lagoon according to claim 5, characterized in that: The specific construction steps of the ring beam (6) are as follows: A plurality of first main bars (7) are provided, a plurality of the first main bars (7) are arranged along the corresponding side edge of the muck pool (1), and three first main bars (7) are horizontally arranged on each side edge, and the three first main bars (7) are spaced and arranged vertically; A plurality of hooked bars (8) are provided, the first end of the hooked bar (8) is bent to form a bent portion, and the bent portion is hooked on the corresponding first main bar (7), and the second end is fixed on the corresponding steel sheet pile (2); Then the formwork is supported and the concrete is poured.

7. A method of constructing a new type of sludge lagoon according to claim 5, characterized in that: The specific construction steps of the support beam (3) are as follows: Four second main bars (10) are provided, the four second main bars (10) are arranged between the corresponding two steel sheet piles (2), and the two ends of the second main bars (10) are fixed with the corresponding steel sheet piles (2); A plurality of stirrups (11) are provided, a plurality of the stirrups (11) are fixed on the outer side of the second main bars (10); Setting up a formwork and pouring concrete.

8. A structure of a new type of slag pool, which is made by using the construction method of claim 1, characterized in that: The application relates to a construction method of a slag pool. A plurality of steel sheet piles (2) are arranged on the side walls of the slag pool (1), and the steel sheet piles (2) are connected in a whole; A base (4) is poured on the bottom of the slag pool (1), and the base (4) supports the bottom of the steel sheet pile (2); A ring beam (6) is poured on the top of the steel sheet pile (2), and the ring beam (6) wraps the top end of the steel sheet pile (2); A support beam (3) is poured between two corresponding steel sheet piles (2), and the support beam (3) supports the top of the steel sheet pile (2); A plurality of water permeable openings (5) are arranged on the base (4) in a spaced manner, and water in the slag pool (1) penetrates into the land through the water permeable openings (5).

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