Basement bottom plate post-cast strip water stop steel plate reinforcing device and construction method thereof

Abstract

The invention relates to the technical field of building engineering construction, discloses a basement bottom plate post-cast strip water stop steel plate reinforcing device and a construction method thereof, and aims to solve the problems that in the prior art, a zinc coating is damaged by welding of a supporting framework and a water stop steel plate, and leakage is likely to be caused. The device comprises upper and lower layer bottom plate reinforcing steel bars, a water stop steel plate, a dense-hole mesh, a parting clamp and a side surface pressure-bearing assembly, a parting clamp drives a force transmission screw rod to clamp a water stop steel plate through a rotating rod, a dense-hole mesh is provided with a V-shaped groove and is detachably connected with the parting clamp through a sliding block, and side face pressure bearing assemblies such as a lead screw, a sliding nut and a supporting screw rod provide lateral supporting. The construction method comprises the steps of steel bar binding, lead screw fixing, water stop steel plate clamping, dense-hole mesh installation, supporting and locking, pouring maintenance and dismantling. Non-welding installation of the water stop steel plate is achieved, the side pressure resistance is high, the method is suitable for steel plates of different specifications, assembly and disassembly are efficient, parts can be turned over, and the waterproof reliability of the post-cast strip is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering construction, and particularly relates to a basement bottom plate post-pouring belt water stop steel plate reinforcing device and a construction method thereof. BACKGROUND

[0002] In building engineering, the waterproof performance of a basement is a key to ensuring the long-term use safety of a building, and a post-pouring belt, as a core structure of basement bottom plate construction, is mainly used to solve the problem of cracks caused by temperature shrinkage and settlement difference after concrete pouring; a water stop steel plate, as a core component of a post-pouring belt waterproof system, needs to be arranged along the full length of the post-pouring belt to block the groundwater infiltration path, and the installation quality of the water stop steel plate directly determines the waterproof effect.

[0003] The conventional treatment method for the post-pouring belt joint of the basement bottom plate in the current industry is as follows: a support framework is formed by welding waste steel bars, a dense steel wire mesh is hung on the surface of the framework as a lateral sealing layer of concrete, and the support framework needs to be fixedly connected with the surface of the water stop steel plate by welding; in this construction process, the welding process directly damages the galvanized protective layer on the surface of the water stop steel plate, causing the galvanized layer to partially fall off or be damaged, so that the water stop steel plate loses the original corrosion prevention barrier; under the long-term humid environment of the basement or the action of groundwater, the damaged area of the galvanized layer is prone to rust, thereby forming a penetrating leakage channel, and structural hidden dangers are caused for the post-pouring belt leakage in the later period. SUMMARY

[0004] In order to make up for the above shortcomings, the present application provides a basement bottom plate post-pouring belt water stop steel plate reinforcing device and a construction method thereof, which aims to improve the problem that the support framework and the surface of the water stop steel plate are fixedly connected by welding in the prior art, thereby damaging the galvanized protective layer and causing the water stop steel plate to lose the original corrosion prevention barrier and finally produce leakage.

[0005] In order to achieve the above object, the basement bottom plate post-cast strip water stop steel plate reinforcing device adopts the following technical scheme: a basement bottom plate post-cast strip water stop steel plate reinforcing device, which comprises a bottom plate steel bar and a water stop steel plate, and a dense mesh is arranged on the upper and lower sides of the central position of the water stop steel plate, and a plurality of parting clamps are arranged on one side of the water stop steel plate along the long side direction of the post-cast strip; the parting clamp comprises an upper support plate, a lower support plate, an upper parting clamp, a lower parting clamp, a transmission screw, a sleeve and a rotating rod, the sleeve is fixed to the upper support plate, the transmission screw is arranged in the sleeve and connected with the upper parting clamp at the lower end, the rotating rod is in transmission connection with the upper end of the transmission screw, and rotating the rotating rod can drive the transmission screw to drive the upper parting clamp to move downward and press the water stop steel plate; four U-shaped grooves are symmetrically arranged on the left and right sides of the upper support plate and the lower support plate; the dense mesh is fixed by being tied with the upper and lower bottom plate steel bars, and the upper and lower edges of the dense mesh are provided with sliding grooves, a plurality of sliding blocks are slidably connected in the sliding grooves, a rectangular closed groove is arranged at the position corresponding to the sliding block in the U-shaped groove, the length of the closed groove is greater than the diameter of the fixing bolt, the sliding block can reciprocatingly slide along the sliding groove to compensate the positioning deviation of the dense mesh during installation, and the fixing bolt and the fixing nut are arranged in the long closed groove of the sliding block.

[0006] Preferably, a side pressure bearing assembly for bearing the side pressure of the post-cast strip concrete is arranged on the side of the parting clamp away from the dense mesh, the side pressure bearing assembly comprises a lead screw and a sliding nut, a sleeve rod is rotatably arranged at the upper and lower ends of the lead screw, a pressure head is fixedly connected to the end of the sleeve rod away from the lead screw, a semicircular groove adapted to the bottom plate steel bar is arranged at the bottom of the pressure head, the lead screw is vertically fixed by cooperating with the upper and lower bottom plate steel bars through the semicircular groove, and the sliding nut is provided with symmetrical ear holes, a support screw is arranged in the ear hole, and the end of the support screw can abut against the parting clamp to resist the side pressure of the post-cast strip concrete.

[0007] Preferably, the helix angle of the thread of the transmission screw and the sleeve is smaller than the equivalent friction angle of the thread pair, so that the thread is self-locking, the support screw applies a continuous lateral supporting force to the parting clamp, the friction self-locking state of the thread pair is maintained, and the reverse axial movement of the transmission screw is prevented.

[0008] Preferably, a V-shaped groove is arranged in the middle of the dense mesh, and the opening of the V-shaped groove faces away from the parting clamp.

[0009] Preferably, the lower surface of the upper parting clamp and the upper surface of the lower parting clamp are arc surfaces adapted to the shape of the water stop steel plate, so as to avoid the seepage of concrete slurry from the abutting position.

[0010] Preferably, the width of the half-round groove of the pressure head is 1-2mm smaller than the diameter of the bottom plate steel bar, and the pressure head is tightly clamped with the bottom plate steel bar by interference fit.

[0011] Preferably, the distance between the lead screw and the parting clamp is not more than 15cm, so as to ensure the support stiffness of the support screw to the parting clamp and avoid the deviation of the parting clamp under the action of the lateral pressure of the concrete.

[0012] Preferably, the two ear holes of the sliding nut are symmetrically arranged about the axis of the lead screw, and the ear holes are provided with internal threads, the support screw is threadedly connected with the ear holes, and the length of the support screw protruding out of the ear hole can be adjusted by rotating the support screw axially, so that the end of the support screw tightly abuts against the parting clamp.

[0013] Preferably, the end of the support screw away from the parting clamp is provided with a lock nut, and the lock nut is attached to the sliding nut, so as to prevent the support screw from loosening due to vibration during the pouring of the concrete and ensure the continuous lateral constraint of the parting clamp.

[0014] A construction method of a basement bottom plate post-cast strip water stop steel plate reinforcing device, comprising the following steps:

[0015] S1: binding the upper and lower layer bottom plate steel bars located on the side of the dense mesh away from the parting clamp, so that the steel bars extend to the side of the parting clamp, reserving installation space for the reinforcing device, and marking the installation positioning points of the lead screw according to the positioning line position of the water stop steel plate at a preset interval;

[0016] S2: clamping the pressure head into the upper and lower layer bottom plate steel bars through the half-round groove respectively, inserting the two ends of the lead screw into the sleeve rod respectively, tapping the sleeve rod and the pressure head with a rubber hammer to make them tightly clamp with the steel bars, and rotating the lead screw to ensure that it can rotate;

[0017] S3: placing the parting clamp on the installation path of the water stop steel plate, so that the lower parting clamp is attached to the cushion block provided by the temporary cushion, and initially calibrating the position, at this time, the upper parting clamp is in an open state, reserving space for the placement of the water stop steel plate;

[0018] S4: embedding the water stop steel plate between the upper parting clamp and the lower parting clamp of the parting clamp in the horizontal direction, ensuring that the center line of the water stop steel plate coincides with the center line of the post-cast strip, rotating the rotating rod clockwise to drive the transmission screw to move the upper parting clamp downward, until the arc surface is tightly attached to the side wall of the water stop steel plate, the screw pair is self-locked, and the clamping and fixing of the water stop steel plate are completed;

[0019] S5: The mesh is installed on the upper and lower sides of the water stop steel plate, the sliding block of the mesh edge is slid, the closed groove of the sliding block is aligned with the upper support plate and the lower support plate of the parting clamp, a fixing bolt is penetrated and a fixing nut is screwed to pre-tighten, the mesh is leveled with a ruler, then the fixing nut is tightened to ensure that the mesh is tightly attached to the water stop steel plate and prevent concrete from flowing; meanwhile, the upper and lower meshes are tied together with the upper and lower bottom plate steels respectively to prevent the mesh from being displaced horizontally;

[0020] S6: The sliding nut is sleeved on the lead screw, the lead screw is rotated to drive the sliding nut to ascend and descend, so that the sliding nut is kept at the same height as the support plate of the parting clamp; the support screw is screwed into the ear hole of the sliding nut until the end is tightly pressed against the support plate, and the lock nut is screwed to lock, at this time, the support screw and the screw pair are self-locked to form double constraints to resist the lateral pressure of the concrete;

[0021] S7: The concrete located on the side of the mesh away from the parting clamp is poured, and after the pouring of the concrete is completed, the geotextile is covered and watered for maintenance, and the maintenance is performed until the strength of the concrete reaches the preset strength;

[0022] S8: The support screw is reversely rotated to gradually separate from the surface of the support plate of the parting clamp, the lateral constraint is released, the rotating rod is slowly and uniformly rotated counterclockwise, a reverse torque is applied to overcome the friction of the screw pair, until the upper parting clamp is separated from the water stop steel plate; the pressing head and the sleeve rod are moved to separate from the steel bar, the lead screw is removed, the upper parting clamp is loosened, the parting clamp is removed, the fixing bolt is unscrewed, and the mesh is removed;

[0023] S9: The bottom plate steel on the side of the basement not poured is tied, step S7 is repeated, the concrete on the side not poured is poured and maintained, and after the concrete on both sides reaches the design strength, the impurities and floating slurry in the post-poured belt are cleaned, and the post-poured belt is closed according to the design specification.

[0024] The application has the following beneficial effects:

[0025] 1、The application adopts a non-welding fixing mode of the parting clamp combined with the support screw, completely avoids the damage of traditional welding to the galvanized layer on the surface of the water stop steel plate, realizes the "original taste protection" of the water stop steel plate, eliminates the corrosion leakage hidden danger caused by the damage of the galvanized layer from the source; meanwhile, the stable lateral support force provided by the support screw and the self-locking mechanism of the screw pair form double constraints, effectively resist the lateral pressure during the pouring of the concrete, solve the problems of the deviation of the water stop steel plate and the bulging of the mesh caused by the insufficient strength of the traditional iron wire binding, ensure the perpendicularity of the water stop steel plate, and significantly improve the waterproof reliability of the post-poured belt.

[0026] 2. The parting clamp adjusts the lifting distance of the upper parting clamp by driving the force transmission screw through the rotating rod, which can adapt to waterstop steel plates of different thicknesses and widths without the need for custom-made special clamps for specific sizes. In view of the step-by-step construction characteristics of the single-sided construction joint of the post-pouring strip, each component of the device adopts a modular design. Through detachable structures such as U-groove snap-fit ​​and threaded connection, quick assembly and disassembly can be achieved. The installation or removal of a single unit is highly efficient and does not require destructive operation, which greatly improves construction efficiency. The dense mesh can be finely adjusted in position through the sliding groove and slider, which can adapt to the positioning deviation during construction and reduce rework caused by size mismatch.

[0027] 3. The V-shaped notch in the middle of the dense mesh is oriented away from the parting clamp. This structure utilizes the principle of arched surface force to convert the lateral pressure generated during concrete pouring into a dispersed force along the V-shaped slope, which is then transmitted to the connection points between the mesh and the reinforcing bars and parting clamp. This effectively prevents the mesh from bulging or deforming due to localized stress concentration, significantly enhancing the lateral pressure resistance of the dense mesh. At the same time, the mesh structure itself has a hollow characteristic. On the one hand, it can guide the internal air bubbles to escape smoothly during concrete vibration, avoiding the formation of voids and honeycomb due to air bubble retention, thus ensuring the compactness of the concrete. On the other hand, its grid frame can evenly distribute the lateral pressure to the entire mesh plane, rather than concentrating it at local connection points. This works synergistically with the V-shaped notch to further improve the lateral pressure stability of the dense mesh. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of a water-stop steel plate reinforcement device for post-cast strips of basement floor slabs proposed in this invention.

[0029] Figure 2 This is a schematic diagram of the dense mesh structure of a water-stop steel plate reinforcement device for post-cast strips of basement floor slabs proposed in this invention.

[0030] Figure 3 This is a schematic diagram of the screw rod pressure head fixing of a steel plate reinforcement device for post-cast strip waterstop in basement floor slabs proposed in this invention;

[0031] Figure 4 This is a schematic diagram of the sliding nut support and fixing of a water-stop steel plate reinforcement device for post-cast strip of basement floor slab proposed in this invention;

[0032] Figure 5 This is a schematic diagram showing the connection between the perforated mesh and the waterstop steel plate in the post-cast strip reinforcement device for basement floor slabs proposed in this invention.

[0033] Figure 6 This is a schematic diagram of the parting clamp structure of a water-stop steel plate reinforcement device for post-cast strip of basement floor slab proposed in this invention;

[0034] Figure 7A basement bottom plate post-pouring zone water stop steel plate reinforcing device is provided.

[0035] Legend:

[0036] 1, bottom plate steel bar; 2, water stop steel plate; 3, dense mesh; 301, sliding groove; 302, sliding block; 303, fixed bolt; 304, fixed nut; 4, parting clamp; 401, upper support plate; 402, lower support plate; 403, upper parting clamp; 404, lower parting clamp; 405, force transmission screw; 406, sleeve; 407, rotating rod; 5, lead screw; 501, pressure head; 502, sleeve rod; 6, sliding nut; 601, ear hole; 602, support screw. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0038] Embodiment 1: Reference Figures 1-7 A basement bottom plate post-pouring zone water stop steel plate reinforcing device, comprising a bottom plate steel bar 1 and a water stop steel plate 2, a dense mesh 3 is attached to the upper and lower sides of the central position of the water stop steel plate 2, and a plurality of parting clamps 4 are arranged on one side of the water stop steel plate 2 along the long edge direction of the post-pouring zone; the parting clamp 4 comprises an upper support plate 401, a lower support plate 402, an upper parting clamp 403, a lower parting clamp 404, a force transmission screw 405, a sleeve 406, and a rotating rod 407, the sleeve 406 is fixed to the upper support plate 401, the force transmission screw 405 is arranged in the sleeve 406 and connected to the upper parting clamp 403 at the lower end, the rotating rod 407 is drivingly connected to the upper end of the force transmission screw 405, rotating the rotating rod 407 can drive the force transmission screw 405 to move downward and press the water stop steel plate 2 tightly, four U-shaped grooves are symmetrically formed on the left and right sides of the upper support plate 401 and the lower support plate 402; the dense mesh 3 is fixed by binding with the upper and lower bottom plate steel bars 1 by lashing, the upper and lower edges of the dense mesh 3 are provided with sliding grooves 301, a plurality of sliding blocks 302 are slidingly connected in the sliding grooves 301, a rectangular closed groove is formed at the position corresponding to the U-shaped groove of the sliding block 302, the length of the closed groove is greater than the diameter of the fixed bolt 303, allowing the sliding block 302 to reciprocate along the sliding groove 301 to compensate for the positioning deviation during installation of the dense mesh 3, the fixed bolt 303 and the fixed nut 304 are arranged in the long closed groove of the sliding block 302, the fixed bolt 303 passes through the sliding block 302, the upper support plate 401 or the lower support plate 402 in sequence and cooperates with the fixed nut 304 to realize detachable connection of the dense mesh 3 and the parting clamp 4.

[0039] The specific implementation of the embodiment 1 is as follows: the upper and lower bottom steel bars 1 located on the side of the dense mesh 3 away from the parting clamp 4 are bound, the steel bars are extended to the side of the parting clamp 4, the installation space of the reinforcing device is reserved, the installation positioning points of the lead screw 5 are marked according to the positioning wire laying position of the water stop steel plate 2, the parting clamp 4 is placed on the installation path of the water stop steel plate 2, the lower parting clamp 404 is attached to the cushion block of the temporary cushion, and the position is preliminarily calibrated; at this time, the upper parting clamp 403 is in an open state, and the space for placing the water stop steel plate 2 is reserved; the water stop steel plate 2 is embedded between the upper parting clamp 403 and the lower parting clamp 404 of the parting clamp 4 in the horizontal direction, and it is ensured that the center line of the water stop steel plate 2 coincides with the center line of the post-cast strip; the rotating rod 407 is rotated clockwise, the upper parting clamp 403 is driven to move downward by the transmission screw 405, and the curved surface is tightly attached to the side wall of the water stop steel plate 2 until the screw pair is self-locked, and the clamping and fixing of the water stop steel plate 2 are completed.

[0040] The dense mesh 3 is attached and installed on the upper and lower sides of the water stop steel plate 2, the sliding block 302 at the edge of the dense mesh 3 is slid, the closed groove of the sliding block 302 is aligned with the upper support plate 401 and the lower support plate 402 of the parting clamp 4; the fixed bolt 303 is inserted and the fixed nut 304 is screwed to be pre-tightened, the dense mesh 3 is leveled by using a ruler, the fixed nut 304 is tightened, and it is ensured that the mesh is tightly attached to the water stop steel plate 2 to prevent the concrete from flowing; at the same time, the upper and lower dense meshes 3 are bound together with the upper and lower bottom steel bars 1 respectively by using a binding wire to prevent the mesh from transversely moving.

[0041] The concrete located on the side of the dense mesh 3 away from the parting clamp 4 is poured, the geotextile is sprayed and maintained after the pouring of the concrete is completed, the rotating rod 407 is slowly and uniformly rotated in the counterclockwise direction after the concrete strength reaches the preset strength, the reverse torque is applied to overcome the friction of the screw pair, the upper parting clamp 403 is separated from the water stop steel plate 2 until the upper parting clamp 403 is removed, the parting clamp 4 is removed, the fixed bolt 303 is unscrewed, and the dense mesh 3 is removed; finally, the bottom steel bars 1 on the side of the basement not poured are bound, the pouring steps are repeated, the concrete on the side not poured is poured and maintained, and the impurities and floating slurry in the post-cast strip are cleaned after the concrete on both sides reaches the design strength, and the post-cast strip is closed according to the design specification.

[0042] Specifically, the thread helix angle of the transmission screw 405 and the sleeve 406 is smaller than the equivalent friction angle of the screw pair, and the screw is self-locked.

[0043] Specifically, the V-shaped groove is provided in the middle of the dense mesh 3, the opening of the V-shaped groove faces the side away from the parting clamp 4, and the lateral pressure resistance of the dense mesh 3 is enhanced to avoid the deformation of the mesh.

[0044] Specifically, the lower surface of the upper parting clamp 403 and the upper surface of the lower parting clamp 404 are arc surfaces that are adapted to the shape of the water stop steel plate 2, so as to avoid the concrete slurry from flowing from the joint.

[0045] In the embodiment 2, the side pressure bearing assembly is arranged on the side of the parting clamp 4 away from the dense mesh 3, and the side pressure bearing assembly comprises a lead screw 5 and a sliding nut 6. The lead screw 5 is rotatably installed at the upper and lower ends of the lead screw 5, and a sleeve rod 502 is fixedly connected to the end of the sleeve rod 502 away from the lead screw 5. A pressure head 501 is fixedly connected to the end of the sleeve rod 502 away from the lead screw 5, and a semicircular groove is formed in the bottom of the pressure head 501. The semicircular groove is adapted to the bottom plate steel bar 1, and the lead screw 5 is vertically fixed by cooperating with the upper and lower bottom plate steel bars 1. The sliding nut 6 is provided with symmetrical ear holes 601, and a support screw 602 is arranged in the ear holes 601. The end of the support screw 602 is abutted against the parting clamp 4 to resist the side pressure of the post-poured concrete.

[0046] The specific implementation of the embodiment 2 is as follows: the pressure head 501 is clamped into the upper and lower bottom plate steel bars 1 through the semicircular groove, the ends of the lead screw 5 are inserted into the sleeve rod 502, the sleeve rod 502 and the pressure head 501 are tightly clamped with the steel bars by tapping them with a rubber hammer, and the lead screw 5 is ensured to be rotatable. The sliding nut 6 is sleeved on the lead screw 5, the lead screw 5 drives the sliding nut 6 to ascend and descend, and the sliding nut 6 is kept at the same height as the support plate of the parting clamp 4. The support screw 602 is screwed into the ear hole 601 of the sliding nut 6 until the end is abutted against the support plate, and a lock nut is screwed to lock. At this time, the support screw 602 and the screw pair are self-locked to form double constraints to resist the side pressure of the concrete.

[0047] When the device is disassembled, the support screw 602 is reversely rotated to gradually separate from the surface of the support plate of the parting clamp 4, the side constraint is released, the pressure head 501 and the sleeve rod 502 are moved to separate from the steel bars, and the lead screw 5 is removed.

[0048] Specifically, the width of the semicircular groove of the pressure head 501 is 1-2 mm smaller than the diameter of the bottom plate steel bar 1, and the pressure head 501 is tightly clamped with the bottom plate steel bar 1 by interference fit.

[0049] Specifically, the distance between the lead screw 5 and the parting clamp 4 is not more than 15 cm, so as to ensure the support stiffness of the support screw 602 to the parting clamp 4 and avoid the parting clamp 4 from being deviated under the action of the side pressure of the concrete.

[0050] Specifically, the two ear holes 601 of the sliding nut 6 are symmetrically arranged about the axis of the screw rod 5, the inner threads are arranged in the ear holes 601, the support screw rod 602 is threadedly connected with the ear holes 601, the length of the support screw rod 602 extending out of the ear holes 601 can be adjusted by axially rotating the support screw rod 602, the end of the support screw rod 602 abuts against the parting clamp 4, the end of the support screw rod 602 away from the parting clamp 4 is provided with a lock nut, the lock nut is attached to the sliding nut 6, the support screw rod 602 can be prevented from loosening due to vibration during the concrete pouring process, and the continuous lateral constraint on the parting clamp 4 is ensured; and the support screw rod 602 applies a continuous lateral supporting force to the parting clamp 4, the friction self-locking state of the screw pair is maintained, and the reverse axial movement of the force transmission screw rod 405 is prevented.

[0051] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. A basement bottom plate post-cast strip water stop steel plate reinforcing device, comprising upper and lower two layers of bottom plate steel bars (1) and a water stop steel plate (2), characterized in that: The water stop steel plate (2) is symmetrically provided with a plurality of U-shaped grooves on the left and right sides of the upper and lower support plates (401) and (402). The water stop steel plate (2) is symmetrically provided with a plurality of U-shaped grooves on the left and right sides of the upper and lower support plates (401) and (402). The sliding block (302) is provided with a fixed bolt (303) and a fixed nut (304) in the long closed groove.

2. The waterproofing steel plate reinforcing device for post-cast strip of basement bottom plate according to claim 1, characterized in that: The side pressure bearing assembly includes a lead screw (5) and a sliding nut (6). The sliding nut (6) is provided with symmetrical ear holes (601), and the ear holes (601) are provided with support screws (602). The thread helix angle of the lead screw (405) and the sleeve (406) is smaller than the equivalent friction angle of the thread pair, forming a thread self-locking.

3. The waterproofing steel plate reinforcing device for post-cast strip of basement bottom plate according to claim 2, characterized in that: The support screw (602) continuously applies a lateral supporting force to the parting clamp (4), which can maintain the friction self-locking state of the thread pair and prevent the lead screw (405) from moving in the opposite axial direction.

4. The waterproofing steel plate reinforcing device for post-cast strip of basement bottom plate according to claim 1, characterized in that: The middle of the dense hole mesh (3) is provided with a V-shaped groove, and the V-shaped groove is open towards the side away from the parting clamp (4).

5. The waterproofing steel plate reinforcing device for post-cast strip of basement bottom plate according to claim 1, characterized in that: The lower surface of the upper parting clamp (403) and the upper surface of the lower parting clamp (404) are both arc surfaces that are adapted to the shape of the water stop steel plate (2), so as to avoid the concrete slurry from flowing from the joint.

6. The waterproofing steel plate reinforcing device for post-cast strip of basement bottom plate according to claim 2, characterized in that: The width of the semicircular groove of the pressure head (501) is 1-2mm smaller than the diameter of the bottom plate steel bar (1), and the pressure head (501) is tightly clamped with the bottom plate steel bar (1) through interference fit.

7. The waterproofing steel plate reinforcing device for post-cast strip of basement bottom plate according to claim 2, characterized in that: The distance between the lead screw (5) and the parting clamp (4) is not more than 15cm, so as to ensure the supporting stiffness of the supporting screw (602) to the parting clamp (4) and avoid the parting clamp (4) from being deviated under the action of the lateral pressure of the concrete.

8. The waterproofing steel plate reinforcing device for post-cast strip of basement bottom plate according to claim 2, characterized in that: The two ear holes (601) of the sliding nut (6) are symmetrically arranged about the axis of the lead screw (5), and the ear hole (601) is provided with an internal thread, the supporting screw (602) is threadedly connected with the ear hole (601), and the length of the supporting screw (602) extending out of the ear hole (601) can be adjusted by rotating the supporting screw (602) axially, so that the end of the supporting screw (602) tightly abuts against the parting clamp (4).

9. The waterproofing steel plate reinforcing device for post-cast strip of basement floor slab according to claim 8, characterized in that: The end of the supporting screw (602) away from the parting clamp (4) is provided with a lock nut, and the lock nut is abutted with the sliding nut (6), so as to prevent the supporting screw (602) from loosening due to vibration during the pouring of the concrete, and ensure the continuous lateral constraint to the parting clamp (4).

10. A construction method of a basement floor post-cast strip water stop steel plate reinforcing device, characterized in that: The method comprises the following steps: S1: tie the upper and lower layer bottom plate steel bars (1) located on the side of the dense hole mesh (3) away from the parting clamp (4), so that the steel bars extend to the side of the parting clamp (4) and reserve installation space for the reinforcing device, mark the installation positioning points of the lead screw (5) according to the positioning wire position of the water stop steel plate (2) and at a preset interval; S2: clamp the pressure head (501) into the upper and lower layer bottom plate steel bars (1) through the semicircular groove respectively, insert the two ends of the lead screw (5) into the sleeve rod (502) respectively, lightly knock the sleeve rod (502) and the pressure head (501) with a rubber hammer to tightly clamp the steel bars, and rotate the lead screw (5) to ensure that it can rotate; S3: place the parting clamp (4) on the installation path of the water stop steel plate (2), so that the lower parting clamp (404) abuts against the cushion block temporarily arranged, and initially calibrate the position, at this time, the upper parting clamp (403) is in an open state, and space is reserved for placing the water stop steel plate (2); S4: embed the water stop steel plate (2) between the upper parting clamp (403) and the lower parting clamp (404) of the parting clamp (4) along the horizontal direction, ensure that the center line of the water stop steel plate (2) coincides with the center line of the post-cast strip, rotate the rotating rod (407) clockwise, drive the transmission screw (405) to drive the upper parting clamp (403) to move downward, until the arc surface is tightly abutted with the side wall of the water stop steel plate (2), the screw pair is self-locked, the clamping and fixing of the water stop steel plate (2) is completed. S5: Install the mesh (3) on both sides of the water stop steel plate (2), slide the slider (302) at the edge of the mesh (3), align the closed groove of the slider (302) with the upper support plate (401) and the lower support plate (402) of the parting clamp (4), pass the fixing bolt (303) and tighten the fixing nut (304) to pre-tighten, use a ruler to level the mesh (3), then tighten the fixing nut (304) to ensure that the mesh is tightly attached to the water stop steel plate (2) and prevents concrete from flowing; at the same time, use a wire to bind the upper and lower meshes (3) with the upper and lower bottom plate steel bars (1) to prevent the mesh from moving horizontally; S6: Put the sliding nut (6) into the lead screw (5), rotate the lead screw (5) to drive the sliding nut (6) to rise and fall, so that the sliding nut (6) is at the same height as the support plate of the parting clamp (4); screw the support screw (602) into the ear hole (601) of the sliding nut (6) until the end is tightly pressed against the support plate, then screw on the lock nut to lock, at this time the support screw (602) and the threaded pair are self-locking to resist the lateral pressure of the concrete; S7: Pour concrete on the side of the mesh (3) away from the parting clamp (4), cover the geotextile with water after the concrete is poured, and maintain until the concrete strength reaches the preset strength; S8: Reverse the support screw (602) to gradually separate it from the surface of the support plate of the parting clamp (4), remove the lateral constraint, slowly and uniformly rotate the rotating rod (407) counterclockwise, apply a reverse torque to overcome the friction of the threaded pair, until the upper parting clamp (403) is separated from the water stop steel plate (2); move the pressure head (501) and the sleeve rod (502) to separate them from the steel bar, remove the lead screw (5), loosen the upper parting clamp (403), remove the parting clamp (4), unscrew the fixing bolt (303), and remove the mesh (3); S9: Bind the bottom plate steel bars (1) on the side of the basement that has not been poured, repeat step S7, pour concrete on the side that has not been poured and maintain, and clean the debris and floating slurry in the post-cast strip, then close the post-cast strip according to the design specification.

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