Anti-disturbance type basement elevator shaft dewatering and drainage device

Abstract

The utility model discloses an anti-disturbance type basement elevator shaft dewatering and drainage device, which comprises a wall protection steel frame, an anti-disturbance steel frame and an anti-disturbance steel frame, the damping layer is laid at the bottom of the wall protection steel frame, the steel sleeve drainage well is arranged at a hole in the bottom of the wall protection steel frame, and the steel sleeve drainage well comprises a flange plate arranged at the top of the steel sleeve drainage well, an inner water stop ring arranged below the flange plate and a soil retaining sieve plate arranged at the bottom of the steel sleeve drainage well; according to the dewatering and drainage structure, the prefabricated wall protection steel frame is adopted, and the damping layer is arranged at the bottom, so that the influence of muddy soil layer disturbance caused by pit edge stacking loading or internal and external height difference on bottom plate construction is weakened, and the problem that slope instability is likely to be generated when a traditional water collecting well is applied to a muddy soil layer is solved; and the concrete and waterproof construction quality of the elevator shaft bottom plate is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage facilities, in particular to an anti-disturbance basement elevator shaft drainage device. Background Art

[0002] In modern construction, basement structures are increasingly popular due to their versatility and space efficiency. However, basement construction often faces challenges such as high groundwater levels and complex soil conditions, especially in deep, silty soils. These conditions place higher demands on the construction of critical structures such as elevator shafts, requiring effective drainage measures to ensure construction quality and structural safety.

[0003] Currently, common drainage methods used in basement elevator shaft construction include installing drainage wells and using pumping equipment. These methods attempt to lower the groundwater level by installing drainage facilities at or around the elevator shaft foundation pit, facilitating construction and concrete pouring. One such drainage device for basement elevator shaft construction utilizes a concrete cushion layer at the bottom of the elevator shaft and the drainage well, with steel pipes installed within the cushion layer to guide water flow. This is combined with water-stopping measures and a waterproof layer to achieve the desired drainage effect.

[0004] Although existing technologies can meet dewatering needs to a certain extent, they have some obvious shortcomings. First, existing technologies often require the excavation of additional dewatering wells, which not only increases the workload but also may make subsequent processing more difficult. Second, some structures are complex and rely on manual operation, which not only increases construction time and cost but also increases construction risks. In addition, existing technologies have limited applicability in deep, soft silt geology and lack effective protection for elevator pit walls. Disturbance of the soil can easily lead to uneven settlement or cracking of the base plate, affecting the overall stability and durability of the structure. Utility Model Content

[0005] In view of the above defects or improvement needs of the prior art, the purpose of the present invention is to provide an anti-disturbance basement elevator shaft drainage device, which solves the problem of slope instability easily caused by the application of traditional water collection wells in silty soil layers by adopting prefabricated wall protection steel frames. Moreover, the components are prefabricated in the factory and are easy to install, thereby improving the safety of elevator shaft construction and accelerating the construction progress.

[0006] To achieve this object, according to one aspect of the present invention, there is provided an anti-disturbance basement elevator shaft drainage device, comprising:

[0007] The retaining wall steel frame serves as the lateral support structure of the foundation pit;

[0008] A shock-absorbing layer laid on the bottom of the wall steel frame, and

[0009] The steel sleeve drainage well is arranged at the hole of the bottom of the steel frame, and the steel sleeve drainage well comprises a flange plate arranged at the top of the steel sleeve drainage well, an inner water stop ring arranged below the flange plate and a soil retaining sieve plate arranged at the bottom of the steel sleeve drainage well.

[0010] Further, the detachable operation steel ladder is arranged on the inner wall of the steel frame.

[0011] Further, the submersible pump is arranged in the steel sleeve drainage well.

[0012] Further, the micro-expansion concrete is filled in the steel sleeve drainage well.

[0013] Further, the micro-expansion concrete comprises C20 micro-expansion concrete, and the impermeability grade is P8.

[0014] Further, the bottom plate cushion concrete is arranged on the shock-absorbing layer.

[0015] Further, the water stop rubber ring is further arranged on the flange plate.

[0016] Further, the flange cover plate is further arranged on the water stop rubber ring.

[0017] Further, the connecting bolt is arranged between the flange cover plate and the flange plate.

[0018] The utility model discloses the beneficial effects of:

[0019] 1. The application discloses a disturbance-proof basement elevator shaft drainage device, which adopts a prefabricated steel frame, and a shock-absorbing layer is arranged at the bottom, so that the disturbance of the muddy soil layer caused by the pit side load or the inner and outer height difference to the bottom plate construction is weakened, the problem of slope instability that is easily caused by the application of a traditional water collecting well in the muddy soil layer is solved, and the concrete and waterproof construction quality of the elevator shaft bottom plate are improved.

[0020] 2. The application discloses a disturbance-proof basement elevator shaft drainage device, which adopts a prefabricated steel frame, and components are prefabricated in a factory, so that the safety of the elevator shaft construction is improved, and the construction progress is accelerated.

[0021] 3. The application discloses a disturbance-proof basement elevator shaft drainage device, which combines a water stop rubber ring and impermeable concrete, solves the problem that a traditional plugging method is easy to fail, and avoids the occurrence of bottom plate water overflow and the like to the maximum extent.

[0022] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and the attached drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and be more readily understood through consideration of the following description, taken in conjunction with the accompanying drawings, in which:

[0024] Figure 1 is an overall structural diagram of a disturbance-preventing basement elevator shaft drainage device in an embodiment of the present application;

[0025] Figure 2 is a steel casing drainage well part structure schematic diagram of a disturbance-preventing basement elevator shaft drainage device in an embodiment of the present application;

[0026] Figure 3 is a steel casing drainage well specific structure schematic diagram of a disturbance-preventing basement elevator shaft drainage device in an embodiment of the present application;

[0027] Figure 4 is a cross-sectional view of a disturbance-preventing basement elevator shaft drainage device in an embodiment of the present application;

[0028] In all the drawings, the same reference signs refer to the same technical features, specifically:

[0029] 1 - a steel wall frame; 2 - a shock absorbing layer; 3 - a steel casing drainage well; 4 - a detachable working steel ladder; 5 - a flange plate; 6 - a water stop rubber ring; 7 - an inner water stop ring; 8 - a bottom soil retaining sieve plate; 9 - micro-expansion concrete; 10 - an elevator shaft bottom plate cushion layer; 11 - a steel casing flange cover plate. DETAILED DESCRIPTION

[0030] The utility model will be explained further in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described here are only for explaining the utility model, not limiting the utility model. In addition, it needs to be explained that, for the convenience of description, only the parts related to the utility model are shown in the drawings, not all the structures.

[0031] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] It is to be understood that the singular forms "a," "an," and "the" include plural referents unless expressly stated otherwise. It should be further understood that the terms "comprise," "comprises," and "comprising" as used herein are used in the sense of "including," "includes," or "include," but are not used in the sense of "consist only of" or "consisting only of."

[0033] It is to be understood that an artisan with ordinary skill in the art can practice the application as claimed without having need for unduly extensive experimentation. The artisan will appreciate that terms used herein are to be understood in their general sense, unless otherwise defined. For example, the term "comprising" is to be understood as meaning "including", "containing", or "characterized by", but not "consisting only of". The term "consisting essentially of" is to be understood as meaning "including at least the recited entities, but not excluding others." The term "consisting of" is to be understood as meaning "including only the recited entities, and excluding others."

[0034] The utility model provides a kind of anti-disturbance type basement elevator shaft drainage device, it is by using prefabricated fender steel frame, and sets up shock attenuation layer in bottom, weaken the impact that the disturbance of silt layer to bottom plate construction due to pit side load or internal and external height difference causes, solve the problem that traditional water collecting well is applied in silt layer and is prone to produce side slope instability, strengthen the concrete and waterproof construction quality of elevator shaft bottom plate;

[0035] Example 1:

[0036] As Figure 1As shown, the basement elevator shaft drainage device of the present embodiment comprises a steel frame 1, a bottom shock absorbing layer 2, a steel sleeve drainage well 3, a detachable work steel ladder 4, a flange plate 5, an inner water stop ring 7 and a bottom soil retaining screen plate 8. The steel frame 1 is placed in the excavated elevator shaft foundation pit, and can be prefabricated in the factory and then transported to the construction site for assembly, which is simple to install and accelerates the construction progress. As the peripheral support structure of the entire drainage device, the prefabricated steel frame provides firm lateral support, which can prevent the foundation pit wall from collapsing or deforming during construction and ensure the stability of the foundation pit, thereby providing safety protection for subsequent construction. In the present embodiment, the shock absorbing layer 2 is laid at the bottom of the foundation pit inside the steel frame, and is composed of 40mm thick fine sand and other materials, which can absorb the vibration and pressure caused by construction activities or external loads, protect the bottom plate from impact and pressure that may occur during construction, and at the same time help to maintain the flatness of the bottom of the foundation pit. The steel sleeve drainage well 3 is connected through the reserved hole at the bottom of the steel frame 1 and extends into the soil layer below the bottom plate as a water collecting well. A submersible pump is placed inside the well to lower the groundwater level through pumping, which can effectively drain the accumulated water in the foundation pit and prevent water pressure from affecting the bottom plate and foundation pit wall. The detachable work steel ladder 4 is installed on the steel frame, and the corresponding legs are reserved according to the height of the foundation pit to provide a passage for construction personnel to go up and down the foundation pit, which is convenient for construction operation and maintenance work, ensures the safety of construction personnel, and improves the construction efficiency. The flange plate 5 is installed at the top of the steel sleeve drainage well 3, and the sealing and opening control are realized through the connection of the flange plate and the cover plate. When not draining, the drainage port is closed to prevent debris from entering or water from evaporating. When draining, the flange plate is opened for pumping operation. The inner water stop ring 7 is located inside the flange plate and cooperates with the flange cover plate and the water stop rubber ring to increase a sealing defense line, improve the waterproof performance of the overall structure, enhance the anti-seepage effect, and protect the bottom plate from water erosion. The bottom soil retaining screen plate 8 is provided at the bottom of the steel sleeve drainage well 3, and the screen plate has a certain aperture to allow water to pass through while preventing soil particles from entering the drainage system during the drainage process, thereby keeping the drainage unobstructed.

[0037] Further, as shown in the drawings, Figure 4 After the foundation pit construction is completed, the bottom plate cushion concrete 10 needs to be laid on the top of the bottom shock absorbing layer 2 as a transition layer between the bottom plate and the foundation pit soil layer, which helps to disperse the load and provides a stable foundation for the bottom plate, ensuring the integrity and durability of the bottom plate structure. Before pouring the bottom plate cushion concrete 10, the groundwater level needs to be kept at a low state, and the dewatering well needs to be backfilled with micro-expanding concrete 9. In the present embodiment, C20 micro-expanding concrete with a permeability resistance level P8 is used.

[0038] Further, as shown in the drawings, Figure 2 Figure 3As shown, before the bottom mat concrete 10 is initial set, the water stop rubber ring 6 and the steel sleeve flange cover plate 11 need to be arranged on the steel sleeve drainage well 3; wherein, the water stop rubber ring 6 is arranged on the top of the flange plate 5, and the rubber ring can provide sealing effect when the cover plate is closed, prevent water leakage through the joint, ensure the sealing of the drainage system, and avoid the bottom flooding; the steel sleeve flange cover plate 11 is arranged on the top of the water stop rubber ring 6, and the flange cover plate 11 is connected with the flange plate 5 through bolts, which can realize quick opening and closing, control the drainage process, and protect the drainage system from external factors.

[0039] Embodiment 2

[0040] The embodiment provides a specific construction method of a disturbance-proof basement elevator shaft drainage device, comprising:

[0041] S100, according to the design drawing requirements, the corresponding fender steel frame 1 is prepared in advance, the steel plate thickness is 6 mm, and the elevator shaft foundation pit is excavated to the specified depth.

[0042] S200, a layer of 40 mm thick fine sand is laid as a bottom shock absorbing layer 2 at the bottom of the foundation pit, after the laying is completed, the fender steel frame 1 is placed in the foundation pit, the support legs are reserved on the frame wall according to the height of the foundation pit, so that the steel ladder 4 can be installed and removed, and a hole with a diameter of 400 mm is reserved at the bottom of the frame to connect the steel sleeve drainage well 3;

[0043] S300, a water collecting well is excavated at the reserved hole position at the bottom of the fender steel frame 1, and the steel sleeve drainage well 3 is arranged, which is used as an internal water collecting and pumping facility, wherein the steel sleeve has a diameter of 400 mm and is made of a 6 mm thick steel plate, then the steel sleeve drainage well 3 is welded and fixed with the fender steel frame 1 to ensure firm connection, a flange plate 5 is installed at the top, a submersible pump is arranged in the steel sleeve drainage well, a water stop rubber ring 6 is arranged on the steel sleeve drainage well 3, and a flange cover plate 11 is arranged between the flange cover plate 11 and the flange plate 6, which is connected by bolts to ensure the sealing property.

[0044] S400, C20 micro-expansion concrete 9 is used for backfilling in the steel sleeve drainage well 3 to improve the impermeability, then the bottom mat concrete 10 is poured on the shock absorbing layer 2 to provide a stable foundation for the bottom, and before the concrete is initial set, the water stop rubber ring 6 is arranged on the steel sleeve, and the flange cover plate 11 is used for closing, and the flange cover plate 11 and the flange plate 5 are fixedly connected by bolts.

[0045] During the construction process, the water level change and the structural stability need to be continuously monitored, and necessary adjustments are made, and after the construction is completed, detailed inspection and acceptance are carried out to ensure that all construction requirements are met.

[0046] It should be understood that although the steps in the flowcharts of the drawings are shown in a sequential order following the arrows, the steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated otherwise herein, the execution of the steps is not strictly limited to the order indicated by the arrows, and can be executed in other orders. Moreover, at least some of the steps in the flowcharts of the drawings can include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of which is not necessarily sequential, but can be round-robin or alternating with at least some of the other steps or sub-steps or stages of other steps.

[0047] The above only describes some embodiments of the present application, and it should be pointed out that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A disturbance-proof basement elevator shaft drain, characterized in that, The utility model relates to a kind of pit support structures, including: A steel frame (1) as lateral support structure of foundation pit; Laid in the shock-absorbing layer (2) of the bottom of the steel frame (1), and Steel casing drainage well (3) is arranged in the hole of the bottom of the steel frame (1), the steel casing drainage well (3) includes inner water stop ring (7) arranged at the top of the steel casing drainage well (3), flange (5) arranged below the inner water stop ring (7) and retaining screen (8) arranged at the bottom of the steel casing drainage well (3);By the steel frame (1) and the shock-absorbing layer (2) are combined, effectively weaken the influence of pit bottom silt layer disturbance on the flatness of bottom plate.

2. A disturbance-proof basement elevator shaft drain according to claim 1, characterized in that It also includes detachable work steel ladder (4) arranged on the inner wall of the steel frame (1).

3. A disturbance-proof basement elevator shaft drain according to claim 1, characterized in that It also includes submersible pump arranged inside the steel casing drainage well (3).

4. A storm resistant basement elevator shaft drain according to claim 3, wherein, It also includes micro-expansion concrete (9) filled in the steel casing drainage well (3).

5. A storm resistant basement elevator shaft drain according to claim 4, wherein, The micro-expansion concrete (9) includes C20 micro-expansion concrete, and the impermeable grade P8.

6. A disturbance-proof basement elevator shaft drain according to claim 1, characterized in that It also includes bottom plate cushion layer concrete (10) laid on the shock-absorbing layer (2).

7. The disturbance-proof basement elevator shaft drain of claim 1, wherein, The flange (5) is also provided with water stop rubber ring (6).

8. A storm resistant basement elevator shaft drain according to claim 7, wherein, The water stop rubber ring (6) is also provided with flange cover plate (11).

9. A storm resistant basement elevator shaft drain according to claim 8, wherein, The flange cover plate (11) and the flange (5) are provided with connecting bolts.

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