Sunken toilet reverse ridge shaping formwork and integrated pouring construction method

Abstract

The invention relates to a sinking type toilet reverse ridge shaping formwork and an integrated pouring construction method, and belongs to the field of sinking type toilet and reverse ridge construction. The sinking type toilet reverse ridge shaping formwork is arranged on the two sides of a cast-in-place reverse ridge and supported on a cast-in-place floor side bottom formwork; the device is composed of a cross arm beam, a reverse ridge inner side mold, a reverse ridge outer side mold, a supporting block, a connecting beam and a conical barrel support. The construction method comprises the steps of bottom formwork erecting, conical barrel support manufacturing, positioning and installing, reverse ridge outer side formwork and supporting block installing, cross arm beam and reverse ridge inner side formwork installing, connecting beam installing, integrated concrete pouring, finalization formwork dismantling, conical barrel support dismantling and expansion mortar filling. The two sides of the cast-in-place reverse ridge cross arm beam form a door type fixing structure through the connecting beams, fixing is reliable, stress is stable, the size deviation generated in the vibrating process can be reduced, and the cast-in-place reverse ridge pouring quality is guaranteed. The connecting beams and the cross arm beams respectively adopt an up-and-down overlapping lap joint mode, so that the fight problem caused by cross crossing is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the field of sunken toilets and the construction of anti-curbs in the construction field, and particularly relates to a standardized formwork for the anti-curb of a sunken toilet and an integral pouring construction method. Background Art

[0002] The same-floor drainage of toilets avoids a series of troubles and potential hazards (including unclear property rights, noise interference, leakage potential hazards, space limitations, etc.) caused by the occupation of the lower floor space by the drainage horizontal pipe through reasonable layout of the pipes within this floor, and is gradually being promoted and used. However, due to the existence of the toilet slab lowering and the anti-curb, the secondary construction of the anti-curb increases the construction difficulty. With multiple processes, it is very difficult to control the quality on site. Since the amount of concrete required for the anti-curb is small, material waste is likely to occur on site, increasing the on-site garbage; moreover, the waterproofing of toilets is the key point of building construction quality control. Once not well controlled, it will cause leakage and serious potential safety hazards.

[0003] Patent application 201910066632.0 discloses an anti-curb formwork for building settlement parts and its pouring method. Its structure includes a floor slab formwork bottom plate, an anti-curb hanging formwork for the settlement part, and a shear wall formwork; it is fixed by positioning with a backing strip, and the backing strip is fixed above the floor slab formwork bottom plate through a reinforcement screw, and the shear wall, floor slab, and anti-curb for the settlement part are poured integrally. Compared with the traditional process, the work efficiency is improved; however, its backing strip is fixed to the bottom plate through a reinforcement screw, and its single-point fixing method has the situation of unstable force during the concrete pouring and vibration process, and it is impossible to accurately control the concrete elevation at the slab lowering part and the geometric dimension deviation of the slab lowering surface. Especially when the slab lowering height for the same-floor drainage is greater than 30 cm, quality problems such as excessive dimension deviation are likely to occur, and it is only applicable to the single-sided slab lowering working condition. For the slab lowering working condition of an enclosed-shaped sunken toilet, there are problems such as incomplete splicing and backing strip interference, and its scope of application is limited; at the same time, it is inconvenient to remove the formwork at the internal corner part of the anti-curb and the shear wall, and problems such as chipping and corner breakage are likely to occur, resulting in unevenness at the internal and external corners of the slab lowering surface and affecting the appearance quality of its formed surface, which requires subsequent repair, increasing the construction cost; moreover, when applying the waterproof coating to the wall, the coating on the wall will fall due to gravity and accumulate at the corner. Excessive accumulation of the coating will affect the drying speed of the coating and may also cause cracks, affecting the waterproof performance of the toilet.

[0004] Patent application 202110990839.4 discloses a construction method for pouring the anti-camber of a toilet together with the main body at one time, including S1, formwork processing; S2, measurement and positioning; S3, formwork installation and fixation; S4, concrete pouring and forming; S5, formwork removal; in S1, the formwork is a 14-mm-thick bamboo plywood formwork, which includes a first side formwork, a second side formwork and a third side formwork. Among them, the height of the first side formwork on the inner side of the toilet is equal to the sum of the height of the dropped slab and the height of the anti-camber, and the height of the third side formwork on the outer side of the toilet is the height of the anti-camber; the invention uses a 14-mm-thick bamboo plywood formwork as the formwork, and square timbers and detachable water-stop bolts as reinforcement materials for standardized installation and reinforcement. The construction operation is simple and the construction cost is low. However, there is a row of detachable water-stop bolts on both the dropped slab height and the anti-camber. The number of water-stop bolts is large, the installation is cumbersome, and after the formwork is removed, it is cut with an angle grinder, resulting in low construction efficiency and serious material waste; at the same time, using bamboo plywood as the formwork, it is extremely easy to adhere to the concrete during the formwork removal process, resulting in unevenness at the internal and external corners of the dropped slab surface and affecting the appearance quality of its formed surface; in addition, there are also problems of high formwork damage rate and low reuse rate after formwork removal.

[0005] In summary, in order to ensure the construction quality of the integral pouring of the anti-camber of the sunken toilet, it is necessary to optimize and improve the formwork and construction method of the anti-camber of the same-floor drainage sunken toilet. Summary of the Invention

[0006] The purpose of the present invention is to provide a standardized formwork for the anti-camber of a sunken toilet and an integral pouring construction method to solve the problems existing in the integral pouring construction of the anti-camber of the existing sunken toilet, such as unstable installation of the anti-camber formwork, improper splicing of the dropped slab conditions of the sunken toilet with an enclosed shape, back ribs fighting, inconvenient formwork removal at the internal corner between the anti-camber and the shear wall, unevenness at the internal and external corners, and low reuse rate of parts. In order to achieve the above purpose, the technical solution of the present invention is as follows: A standardized formwork for the anti-camber of a sunken toilet involved in the present invention is used for the integrated construction of a cast-in-place floor slab, a cast-in-place dropped slab and a cast-in-place anti-camber, and it includes a bottom formwork, a cross beam, an inner anti-camber formwork, an outer anti-camber formwork, a support block, a connecting beam and a conical cylinder support; the bottom formwork includes a floor slab side bottom formwork, a dropped slab side bottom formwork and a shear wall outer formwork, and the upper and lower ends of the shear wall outer formwork are respectively connected to the floor slab side bottom formwork and the dropped slab side bottom formwork; the cross beam is arranged at the four corners and the middle parts of the four sides of the cast-in-place dropped slab, the inner anti-camber formwork is fixed to the lower surface of the inner end of each cross beam, the outer anti-camber formwork is fixed to the lower surface of the middle part of each cross beam, a support block is fixed to the lower surface of the outer end of each cross beam, a conical cylinder support is provided at the bottom of the support block or / and the outer anti-camber formwork, and the bottom of the conical cylinder support is detachably connected to the floor slab side bottom formwork; the symmetrically arranged cross beams are connected to each other through a connecting beam.

[0007] Preferably, the inner formwork of the anti-camber is arranged on the side of the cast-in-place drop slab of the cast-in-place anti-camber. The inner formwork of the anti-camber includes a fixed formwork at the upper part and an arc-angle formwork at the lower part. The fixed formwork and the arc-angle formwork are spliced by fixing bolts to form the size of the cast-in-place anti-camber. The top of the arc-angle formwork is a right angle, and the bottom is an arc angle; the top of the fixed formwork is fixed to the end of the cross beam by fixing bolts. The top elevation of the fixed formwork is the top elevation of the cast-in-place anti-camber, and the bottom elevation of the arc-angle formwork is the top elevation of the cast-in-place drop slab.

[0008] Preferably, the outer formwork of the anti-camber is arranged on the side of the cast-in-place floor slab of the cast-in-place anti-camber, and the top is fixed to the middle of the cross beam by fixing bolts. The top elevation of the outer formwork of the anti-camber is the top elevation of the cast-in-place anti-camber, and the bottom elevation is the top elevation of the cast-in-place floor slab.

[0009] Preferably, the cross beam is an I-shaped cross-section beam. The connecting beam includes a connecting cross beam and a connecting longitudinal beam. Both the connecting cross beam and the connecting longitudinal beam are channel-shaped cross-sections; bifurcated grooves are provided in the middle of both ends of the connecting cross beam. The bifurcated grooves are inserted into the web of the cross beam and fixed to the bottom of the upper flange of the cross beam arranged along the long side of the cast-in-place drop slab by fixing bolts; both ends of the connecting longitudinal beam are fixed to the top of the upper flange of the cross beam arranged along the short side of the cast-in-place drop slab by fixing bolts, thereby forming a connecting beam that is criss-crossed and staggered up and down.

[0010] The length of the bifurcated groove is 20 - 50 cm, and the overlapping length of the bifurcated groove of the connecting cross beam and the cross beam is greater than 20 cm. The channel-shaped cross-section sizes of the connecting cross beam and the connecting longitudinal beam match those of the cross beam, and there is no contact or connection at the cross intersection.

[0011] Preferably, the height of the conical cylinder support is the same as the height of the cast-in-place floor slab. The conical cylinder support includes an external conical outer cylinder and an internal threaded cylinder of the same height. The outer diameter of the external conical outer cylinder is larger at the top and smaller at the bottom. The upper and lower ends of the external conical outer cylinder and the internal threaded cylinder are formed into a whole by welding plates, and a pulling groove is provided on the large-diameter welding plate; the bottom of the conical cylinder support is fixed to the bottom formwork on the floor slab side by a bottom plate fixing bolt, and the top is fixed to the bottom of the outer formwork of the anti-camber or the support block by an aluminum formwork fixing bolt.

[0012] Preferably, the lower flanges on both sides of the cross beam at the four corners are connected to the inner formwork or the outer formwork of the anti-camber on the adjacent two sides, so that the inner formwork or the outer formwork of the anti-camber on the adjacent right-angled sides are spliced into a whole.

[0013] Preferably, the bottom surfaces of the support block and the outer formwork of the anti-camber are both at the top elevation of the cast-in-place floor slab.

[0014] The present invention also relates to a construction method for integrally pouring the sunken toilet anti-camber using the above-mentioned standardized formwork for the sunken toilet anti-camber, which includes the following steps: S1. Set up the bottom formwork; S2. Fabrication and installation of cone supports: Fabricate cone supports and position and install them on the bottom template. The cone supports are arranged in two circles, inner and outer. S3. Install the outer mold of the counter-ridge and the support block: Install the outer mold of the counter-ridge on the conical cylinder support of the inner ring, and install the support block on the conical cylinder support of the outer ring; S4. Install the crossarm and the inner mold of the counter-sill: overlap the middle part of the crossarm on the outer mold of the counter-sill, overlap the outer end of the crossarm on the support block, and install the inner mold of the counter-sill on the lower surface of the inner end of the crossarm; S5. Tie beam installation: Install the tie beam between the symmetrically arranged crossarm beams; S6. Integrated pouring of concrete: Cast-in-place floor slab, cast-in-place drop-down slab, and cast-in-place anti-slope concrete are poured in one piece and maintained; S7. Dismantling of the standardized formwork: After the cast-in-place floor slab, cast-in-place drop-down slab, and cast-in-place counterslope have reached sufficient strength, the standardized formwork components are dismantled in the following order: connecting longitudinal beams, connecting transverse beams, crossbeams, counterslope inner formwork, counterslope outer formwork, and support blocks; S8, the conical cylinder support is removed, leaving a conical groove at the cast-in-place floor; S9. Expansion mortar filling: Inject expansion mortar into the conical groove to form a conical expansion mortar body.

[0015] The technical solution of the present invention has the following beneficial effects compared with the traditional technology: 1. The sunken toilet anti-slope standardized formwork involved in the present invention connects the symmetrically arranged cross beams with each other through connecting beams, and forms a gate-type fixed structure through the connecting beams. The structure has reliable fixation and stable force, can effectively resist the force generated during concrete pouring, reduce the dimensional deviation generated during the vibration process, and ensure the quality of cast-in-place anti-slope pouring.

[0016] 2. The connecting beams of the standardized formwork for the sunken toilet anti-step involved in the present invention include connecting cross beams and connecting longitudinal beams. A bifurcation groove is provided in the middle of both ends of the connecting cross beam, the bifurcation groove is inserted into the web of the cross arm beam, and is fixed to the bottom of the upper flange of the cross arm beam arranged along the long side of the cast-in-place drop plate by fixing bolts; the two ends of the connecting longitudinal beam are fixed to the top of the upper flange of the cross arm beam arranged along the short side of the cast-in-place drop plate by fixing bolts, thereby forming a criss-crossing and staggered connecting beam, which effectively avoids the fighting problem caused by the cross intersection and effectively improves the installation efficiency of the connecting beam. At the same time, the connecting cross beam adjusts the overlapping length with the cross arm beam through the bifurcation groove, and the connecting longitudinal beam can adapt to cast-in-place drop plates of different sizes by adjusting the overlapping length with the cross arm beam, thereby improving the application range of the standardized formwork for the sunken toilet anti-step.

[0017] 3. The inner formwork of the sunken toilet anti-camber standardized formwork involved in the present invention includes a standardized formwork at the upper part and an arc angle formwork at the lower part. The standardized formwork and the arc angle formwork are spliced by fixing bolts to form the size of the cast-in-place anti-camber. The top of the arc angle formwork is a right angle, and the bottom is an arc angle. With the design of the standardized formwork + arc angle formwork, the anti-camber and the female corner of the dropped slab are formed into an arc after pouring. The formwork removal is simple, which can completely solve the problem of missing edges and corners, effectively improve the visual quality of the formed surface, reduce the accumulation of paint at the female corner, and reduce the potential leakage hazard.

[0018] 4. The sunken toilet anti-camber standardized formwork involved in the present invention uses a conical cylinder support to fix the anti-camber standardized formwork. It can not only effectively fix the cross beam, ensure the formwork erection quality, but also act as a floor pouring thickness controller. At the same time, it can be removed after the floor reaches the strength and recycled, effectively reducing material loss and being green and environmentally friendly. The conical cylinder support is fixed on the bottom formwork through the bottom plate fixing bolts, which can be effectively fixed, reduce the displacement during the pouring and vibration process, and with the conical design, it is convenient to remove after reaching the strength, improving the removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the top view of the sunken toilet anti-camber standardized formwork; Figure 2 is the cross-sectional view of the connecting cross beam of the sunken toilet anti-camber standardized formwork ( Figure 1 section A-A in); Figure 3 is the cross-sectional view of the connecting longitudinal beam of the sunken toilet anti-camber standardized formwork ( Figure 1 section B-B in); Figure 4 is the detailed drawing of the conical cylinder support node ( Figure 2 detail drawing of node A in); Figure 5 is the cross-sectional view after the integral pouring of the sunken toilet anti-camber; Figure 6 is the exploded view of each component of the conical cylinder support; Figure 7 is the three-dimensional schematic diagram of the conical cylinder support; Figure 8 is the schematic diagram of the cross-sectional connection of the connecting cross beam of the sunken toilet anti-camber standardized formwork; Figure 9 is the exploded view of each component of the cross-section of the connecting cross beam of the sunken toilet anti-camber standardized formwork; Figure 10 is the schematic diagram of the cross-sectional connection of the connecting longitudinal beam of the sunken toilet anti-camber standardized formwork; Figure 11 is the exploded view of each component of the cross-section of the connecting longitudinal beam of the sunken toilet anti-camber standardized formwork; Figure 12It is a schematic diagram of the outer formwork structure of the standard type of anti-camber; Figure 13 It is a schematic diagram of the standardized formwork structure of the standard type of anti-camber at different angles; Figure 14 It is a schematic diagram of the standardized formwork structure of the spliced type of anti-camber at different angles; Figure 15 It is a schematic diagram of the splicing of the formwork for the adjacent sides; Figure 16 It is a schematic diagram of the arc angle formwork structure; Figure 17 It is a schematic diagram of the connection between the formwork and the arc angle formwork; Figure 18 It is a schematic diagram of the crossbeam structure; Figure 19 It is a schematic diagram of the connecting crossbeam structure; Figure 20 It is a schematic diagram of the connecting longitudinal beam structure; Figure 21 It is a schematic diagram of the overlapping cross-section of the connecting crossbeam and the crossbeam; Figure 22 It is a three-dimensional schematic diagram of the overlapping of the connecting crossbeam and the crossbeam; Figure 23 It is a schematic diagram of the overlapping cross-section of the connecting longitudinal beam and the crossbeam; Figure 24 It is a three-dimensional schematic diagram of the overlapping of the connecting longitudinal beam and the crossbeam; Figure 25 It is a top view after the construction of step S4 in Embodiment 1; Figure 26 It is a top view after the construction of the connecting crossbeam in step S5 of Embodiment 1; Figure 27 It is a sectional view of the cast-in-place anti-camber after the construction of step S6 in Embodiment 1; Figure 28 It is a sectional view of the cast-in-place anti-camber after the construction of step S7 in Embodiment 1; Figure 29 It is a sectional view of the cast-in-place anti-camber after the construction of step S8 in Embodiment 1; Figure 30 It is a top view of the standardized formwork for the anti-camber in the sunken bathroom in Embodiment 2; Figure 31 It is a sectional view of the connecting crossbeam of the standardized formwork for the anti-camber in the sunken bathroom in Embodiment 2; Figure 32 It is a sectional view after the integral pouring of the anti-camber in the sunken bathroom after the construction of step S9 in Embodiment 2; Figure 33 It is a sectional view of the connecting crossbeam of the standardized formwork for the anti-camber in the sunken bathroom in Embodiment 3; Figure 34It is the sectional view after the integral casting of the counterfort in the sunken toilet after the construction of step S9 in Embodiment 3; Figure 35 It is the flow chart of the construction method for the integral casting of the counterfort in the sunken toilet.

[0020] Markings in the figure: 1 - cast-in-place floor slab, 2 - cast-in-place depressed slab, 3 - cast-in-place counterfort, 4 - bottom formwork, 401 - installation hole, 5 - expansion mortar body, 6 - outer formwork of the counterfort, 7 - inner formwork of the counterfort, 701 - shaping form, 702 - arc angle form, 8 - support block, 9 - cross beam, 10 - connecting cross beam, 1001 - bifurcated groove, 11 - connecting longitudinal beam, 12 - conical cylinder support, 1201 - threaded cylinder, 1202 - aluminum formwork fixing bolt, 1203 - bottom plate fixing bolt, 1204 - welding plate, 1205 - extraction groove, 1206 - conical outer cylinder, 13 - fixing bolt, 14 - conical groove, 15 - connecting hole, 16 - formwork stiffener, 17 - floor slab steel bar, 18 - end plate, 1801 - vertical end plate, 1802 - inclined end plate. Specific implementation manners

[0021] To deepen the understanding of the present invention, the following will refer to Figures 1 to 35 and make a detailed description of the embodiments of the present invention. The following embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation manners are given, but the protection scope of the present invention is not limited to the following embodiments.

[0022] Embodiment 1 In this embodiment, the thickness of the designed cast-in-place floor slab 1, the thickness of the cast-in-place depressed slab 2, and the height of the cast-in-place counterfort 3 are 200 mm. The planar dimension of the cast-in-place depressed slab 2 is 2850 mm × 1480 mm, and the depth of the cast-in-place depressed slab 2 is 300 cm.

[0023] Combined with the appendix Figure 1 ~Appendix Figure 3As shown in the figure, the standardized formwork for the inverted sill of the sunken bathroom includes a bottom formwork 4, a crossbeam 9, an inner formwork 7 for the inverted sill, an outer formwork 6 for the inverted sill, a support block 8, a connecting beam, and a conical cylinder support 12; the bottom formwork 4 includes a bottom formwork on the floor side, a bottom formwork on the lowered slab side, and an outer formwork for the shear wall. The upper and lower ends of the outer formwork for the shear wall are respectively connected to the bottom formwork on the floor side and the bottom formwork on the lowered slab side. The crossbeam 9 is arranged at the four corners and the middle parts of the four sides of the cast-in-place lowered slab 2. The inner formwork 7 for the inverted sill is fixed to the lower surface of the inner end of each crossbeam 9, and the outer formwork 6 for the inverted sill is fixed to the lower surface of the middle part of each crossbeam 9. Support blocks 8 are fixed to the lower surface of the outer end of each crossbeam 9. The single root length of the support block 8 is 10 - 20 cm, and there is no connection between the support blocks 8. Conical cylinder supports 12 are provided at the bottoms of the support blocks 8 and the outer formwork 6 for the inverted sill. The bottom of the conical cylinder support 12 is detachably connected to the bottom formwork on the floor side; the symmetrically arranged crossbeams 9 are connected to each other through connecting beams. In this embodiment, four diagonal crossbeams 9 are arranged at the four corners of the inverted sill 3, two groups of four crossbeams 9 are arranged on the long side of the inverted sill 3, and they are respectively connected into a whole by connecting crossbeams 10. One group of two crossbeams 9 is arranged on the short side of the inverted sill 3, and they are connected into a whole by connecting longitudinal beams 11. The height of the conical cylinder support 12 is 120 mm, the height of the outer formwork 6 for the inverted sill is 200 mm, the total height of the inner formwork 7 for the inverted sill is 500 mm, and conical cylinder supports 12 are respectively arranged at the bottoms of the support blocks 8 and the outer formwork 6 for the inverted sill at the bottom of the crossbeam 9.

[0024] Combined with the attached Figure 1 As shown in the figure, the inner formwork 7 for the inverted sill is arranged on the side of the cast-in-place lowered slab 2 of the cast-in-place inverted sill 3, and the four sides enclose the shape of the cast-in-place lowered slab 2; combined with the attached Figure 2 and the attached Figure 3 As shown in the figure, the inner formwork 7 for the inverted sill includes an upper standardized form 701 and a lower arc angle form 702. Among them, the height of the standardized form 701 is 400 mm, and the height of the arc angle form 702 is 100 mm; combined with the attached Figure 17 As shown in the figure, the top of the standardized form 701 is fixed to the end of the crossbeam 9 through a fixing bolt 13, and the arc angle form 702 is fixed to the bottom of the standardized form 701. The top elevation of the standardized form 701 is the top elevation of the cast-in-place inverted sill 3, and the bottom elevation of the arc angle form 702 is the top elevation of the cast-in-place lowered slab 2; the standardized form 701 and the arc angle form 702 are composed of lightweight aluminum formworks spliced by fixing bolts 13 to form the size of the cast-in-place inverted sill 3. Combined with the attached Figure 16 As shown in the figure, the top of the arc angle form 702 is a right angle, and the bottom is an arc angle, which protects the forming quality of the internal corner and is convenient for demolding.

[0025] Combined with the attached Figure 1 As shown in the figure, the outer formwork 6 for the inverted sill is arranged on the side of the cast-in-place floor slab 1 of the cast-in-place inverted sill 3, and the four sides enclose the shape of the cast-in-place inverted sill 3. Combined with the attached Figure 2 and the attached Figure 3As shown, the top of the outer formwork 6 of the inverted sill is fixed to the middle of the cross beam 9 through the fixing bolts 13. The top elevation of the outer formwork 6 of the inverted sill is the top elevation of the cast-in-place inverted sill 3, and the bottom elevation is the top elevation of the cast-in-place floor slab 1.

[0026] Combined with the attached Figure 18 As shown, the cross beam 9 is an I-shaped cross-section beam, which is arranged at the four corners and the middle parts of the four sides of the cast-in-place depressed slab 2. And the cross beams 9 symmetrically arranged at the middle parts of the four sides form an integral body through the connecting beams; the inner formwork 7 of the inverted sill is fixed at the bottom end of the side of the cast-in-place depressed slab 2 of the cross beam 9, the support block 8 is fixed at the bottom end of the side of the cast-in-place floor slab 1, and the outer formwork 6 of the inverted sill is fixed in the middle; the support block 8 is arranged at the end of the cross beam 9 on the side of the cast-in-place floor slab 1; the support block 8 and the outer formwork 6 of the inverted sill are at the same height and are fixed at the same elevation of the cross beam 9, and the bottommost surfaces are all at the top elevation of the cast-in-place floor slab 1.

[0027] Combined with the attached Figure 13 ~Attached Figure 15 As shown, the inner formwork 7 of the inverted sill and the outer formwork 6 of the inverted sill include standard types and splicing types. The end plates 18 at both ends of the standard inner formwork 7 of the inverted sill and the outer formwork 6 of the inverted sill are all vertical end plates 1801. The splicing inner formwork 7 of the inverted sill and the outer formwork 6 of the inverted sill are provided with 45° inclined end plates 1802 at the corner splicing of the cast-in-place inverted sill 3. Connecting holes 15 are provided on the vertical end plates 1801 and the inclined end plates 1802; combined with the attached Figure 1 As shown, the lower flange of the cross beam 9 at the four corners is connected to the inner formwork 7 or the outer formwork 6 of the adjacent two sides, which is convenient for splicing the inner formwork 7 or the outer formwork 6 of the adjacent right-angle sides into an integral body.

[0028] Combined with the attached Figure 19 、Attached Figure 20 As shown, the connecting beam includes a connecting cross beam 10 and a connecting longitudinal beam 11. The connecting cross beam 10 and the connecting longitudinal beam 11 are both of channel cross-sections; bifurcated grooves 1001 are provided in the middle of both ends of the connecting cross beam 10, and the bifurcated grooves 1001 are inserted into the web of the cross beam 9; combined with the attached Figure 1 ~Attached Figure 3 As shown, the connecting cross beam 10 is fixed to the bottom of the upper flange of the cross beam 9 arranged on the long side of the cast-in-place depressed slab 2 through the fixing bolts 13, combined with the attached Figure 23 、Attached Figure 24 As shown, both ends of the connecting longitudinal beam 11 are fixed to the top of the upper flange of the cross beam 9 arranged on the short side of the cast-in-place depressed slab 2 through the fixing bolts 13; combined with the attached Figure 8 、Attached Figure 9 、Attached Figure 21 、Attached Figure 22 As shown, the bifurcated groove 101 is located in the middle of both ends of the connecting cross beam 10 and corresponds to the position of the web of the cross beam 9. The length of the bifurcated groove 1001 is 20 - 50 cm, and the overlapping length of the bifurcated groove 1001 of the connecting cross beam 10 and the cross beam 9 is greater than 20 cm, ensuring the connection integrity and having a certain adjustment space to adapt to different sizes of the cast-in-place depressed slab 2. Combined with the attachedFigure 1 ~Appendix Figure 3 、Appendix Figure 8 ~Appendix Figure 11 As shown, the groove cross-sectional dimensions of the connecting cross beam 10 and the connecting longitudinal beam 11 match those of the cross arm beam 9, and there is no contact or connection at the cross intersection of the two.

[0029] Combined with Appendix Figure 2 、Appendix Figure 3 As shown, the conical cylinder support 12 is provided at the bottom of the counter-camber outer formwork 6 and the support block 8, and then combined with Appendix Figure 4 、Appendix Figure 6 、Appendix Figure 7 As shown, the conical cylinder support 12 includes two parts, an external conical outer cylinder 1206 and an equal-height internal threaded cylinder 1201. The two are integrally formed by welding plates 1204 at the upper and lower ends. And a lifting groove 1205 is provided on the large-diameter welding plate 1204. The bottom of the conical cylinder support 12 is fixed to the bottom formwork 4 of the cast-in-place floor slab 1 through a bottom plate fixing bolt 1203, and the top is fixed to the connection hole 15 at the bottom of the counter-camber outer formwork 6 and the support block 8 through an aluminum formwork fixing bolt 1202. Combined with Appendix Figure 2 、Appendix Figure 3 、Appendix Figure 5 As shown, the height of the conical cylinder support 12 is the same as that of the cast-in-place floor slab 1. During the pouring process of the floor slab concrete, it acts as a floor slab thickness controller and can be removed after the floor slab reaches the strength. After removal, a conical groove 14 is formed in the cast-in-place floor slab.

[0030] Combined with Appendix Figure 35 As shown, the construction method for integral pouring of the sunken bathroom counter-camber includes the following steps: S1. Setting up the bottom formwork 4: Combined with Appendix Figure 1 ~Appendix Figure 3 As shown, according to the construction requirements, the bottom formwork 4 of the cast-in-place floor slab 1 and the cast-in-place drop panel 2 is set up and the floor slab steel bars 17 are tied, and installation holes are drilled at the specified positions of the bottom support block 8 of the cross arm beam 9 and the counter-camber outer formwork 6.

[0031] S2. Fabrication and positioning installation of the conical cylinder support 12, combined with Appendix Figure 6 、Appendix Figure 7 As shown, it specifically includes the following steps: S2.1. Fabricate welding plates 1204 with inner and outer diameters respectively the same as those of the conical outer cylinder 1206 at the upper and lower ends, and set an inner concave lifting groove 1205 on the large-diameter welding plate 1204; S2.2. Weld the large and small diameter welding plates 1204 to the upper and lower ends of the threaded cylinder 1201, place the threaded cylinder 1201 inside the conical outer cylinder 1206, and weld the large and small diameter welding plates 1204 to the upper and lower ends of the threaded cylinder 1201 respectively to form the conical cylinder support 12; S2.3. Combined with Appendix Figure 2 、AppendixFigure 3 As shown, the conical cylinder support 12 is placed upside down at the installation hole 401 of the bottom formwork 4, and the bottom plate fixing bolt 1203 is used to tighten and fix it at the bottom of the installation hole 401 of the bottom formwork 4 to complete the installation of all conical cylinder supports 12.

[0032] S3. Installation of the outer formwork 6 and support block 8 of the inverted sill: The middle part of the crossbeam 9 is lapped on the outer formwork 6 of the inverted sill, the outer end of the crossbeam 9 is lapped on the support block 8, and the inner formwork 7 of the inverted sill is installed on the lower surface of the inner end of the crossbeam 9. The specific steps are as follows: S3.1. Combine the attached Figure 1 ~attached Figure 3 As shown, the support block 8 is installed on the top of the conical cylinder support 12 above the installation hole 401 of the support block 8, and is fixed with the aluminum formwork fixing bolt 1202; S3.2. Four outer formworks 6 of the inverted sill that meet the size of the cast-in-place inverted sill 3 are spliced with aluminum formworks. The two ends of the four spliced outer formworks 6 of the inverted sill are provided with 45° inclined end plates 1802. The four outer formworks 6 of the inverted sill are respectively fixed on the top of the corresponding conical cylinder supports 12 and fixed with the aluminum formwork fixing bolts 1202; S3.3. The inclined end plates 1802 of the adjacent side outer formworks 6 of the inverted sill are connected with fixing bolts 13, so that the four outer formworks 6 of the inverted sill form an integral body.

[0033] S4. Installation of the crossbeam 9 and the inner formwork 7 of the inverted sill: The middle part of the crossbeam 9 is lapped on the outer formwork 6 of the inverted sill, the outer end of the crossbeam 9 is lapped on the support block 8, and the inner formwork 7 of the inverted sill is installed on the lower surface of the inner end of the crossbeam 9. The specific steps include: S4.1. As shown in the attached Figure 1 ~attached Figure 3 As shown, the crossbeam 9 is installed on the top of the support block 8 and fixed with the fixing bolt 13. The junction of the crossbeam 9 and the outer formwork 6 of the inverted sill is also fixed with the fixing bolt 13; S4.2. Combine the attached Figure 13 、attached Figure 14 、attached Figure 17 As shown, four sizing molds 701 and arc angle molds 702 that meet the size of the cast-in-place inverted sill 3 are spliced with aluminum formworks. The two ends of the four spliced sizing molds 701 and arc angle molds 702 are provided with 45° inclined end plates 1802. The arc angle mold 702 is fixed at the bottom of the sizing mold 701 with the fixing bolt 13; S4.3. The four sizing molds 701 are respectively fixed at the bottom of the crossbeam 9. The junction of the sizing mold 701 and the crossbeam 9 is fixed with the fixing bolt 13, so that the sizing mold 701 and the arc angle mold 702 are suspended at the bottom of the crossbeam 9; S4.4. Combine the attached Figure 25As shown, the inclined end plates 1802 of the adjacent side sizing die 701 and the arc angle die 702 are connected by fixing bolts 13, so that the four sizing dies 701 and the arc angle die 702 form an integral body.

[0034] S5. Installation of the connecting beam: Install the connecting beam between the symmetrically arranged cross beams 9. The specific steps are as follows: S5.1. Combine with the attached Figure 2 and the attached Figure 26 As shown, install the connecting cross beam 10 on the cross beams 9 symmetrically arranged on the long side of the cast-in-place drop panel 2. The bifurcated groove 1001 of the connecting cross beam 10 is inserted into the web of the cross beam 9. After adjusting the overlapping length with the cross beam 9, it is fixed to the bottom of the upper flange of the cross beam 9 through the fixing bolt 13; S5.2. Combine with the attached Figure 1 and the attached Figure 3 As shown, install the connecting longitudinal beam 11 on the cross beams 9 symmetrically arranged on the short side of the cast-in-place drop panel 2. After adjusting the overlapping length with the cross beam 9, both ends of the connecting longitudinal beam 11 are fixed to the top of the upper flange of the cross beam 9 through the fixing bolt 13.

[0035] S6. Integrally pour concrete: As shown in the attached Figure 27 , carry out the integral pouring of the concrete for the cast-in-place floor slab 1, the cast-in-place drop panel 2, and the cast-in-place counter-camber 3, and cure.

[0036] S7. Demolish the standardized formwork: As shown in the attached Figure 28 , after the cast-in-place floor slab 1, the cast-in-place drop panel 2, and the cast-in-place counter-camber 3 reach the strength, successively demolish each component of the standardized formwork. The demolition sequence is: connecting longitudinal beam 11, connecting cross beam 10, cross beam 9, inner formwork 7 of the counter-camber, outer formwork 6 of the counter-camber, support block 8.

[0037] S8. Demolish the conical cylinder support 12: As shown in the attached Figure 29 , remove the bottom fixing base plate fixing bolt 1203 for fixing the conical cylinder support 12. Insert the demolition tool into the lifting groove 1205 at the top of the conical cylinder support 12, and rotate the conical cylinder support 12 in a positive and reverse cycle to separate it from the cast-in-place floor slab 1, and then remove the conical cylinder support 12 to form a conical groove 14 at the corresponding position of the cast-in-place floor slab 1.

[0038] S9. Fill with expansion mortar: As shown in the attached Figure 5 , prepare the expansion mortar, and inject the expansion mortar into the conical groove 14 to form a conical expansion mortar body 5.

[0039] Embodiment 2 Combine with the attached Figure 3 and the attached Figure 31 and the attached Figure 32As shown, in this embodiment, the thickness of the cast-in-place floor slab 1, the thickness of the cast-in-place depressed slab 2, and the height of the conical cylinder support 12 are 120 mm, the height of the cast-in-place counter-camber 3 is 200 mm, the planar dimension of the cast-in-place depressed slab 2 is 2850 mm × 1480 mm, the depth of the cast-in-place depressed slab 2 is 300 cm, the height of the outer formwork 6 of the counter-camber is 200 mm, the total height of the inner formwork 7 of the counter-camber is 500 mm, among which the height of the regular form 701 is 400 mm and the height of the arc angle form 702 is 100 mm; four diagonal cross beams 9 are arranged at the four corners of the cast-in-place counter-camber 3, two groups of four cross beams 9 are arranged on the long side and are respectively connected into a whole by connecting cross beams 10, and one group of two cross beams 9 is arranged on the short side and is connected into a whole by connecting longitudinal beams 11; the conical cylinder support 12 is only arranged at the bottom of the outer formwork 6 of the counter-camber at the bottom of the cross beam 9, and the support block 8 is removed.

[0040] Embodiment 3 Combined with the attached Figure 33 and the attached Figure 34 As shown, in this embodiment, the thickness of the cast-in-place floor slab 1, the thickness of the cast-in-place depressed slab 2, and the height of the conical cylinder support 12 are 120 mm, the height of the cast-in-place counter-camber 3 is 200 mm, the planar dimension of the cast-in-place depressed slab 2 is 2850 mm × 1480 mm, the depth of the cast-in-place depressed slab 2 is 300 cm, the height of the outer formwork 6 of the counter-camber is 200 mm, the total height of the inner formwork 7 of the counter-camber is 500 mm, among which the height of the regular form 701 is 400 mm and the height of the arc angle form 702 is 100 mm; four diagonal cross beams 9 are arranged at the four corners of the cast-in-place counter-camber 3, two groups of four cross beams 9 are arranged on the long side and are respectively connected into a whole by connecting cross beams 10, and one group of two cross beams 9 is arranged on the short side and is connected into a whole by connecting longitudinal beams 11; the conical cylinder support 12 is only arranged at the bottom of the support block 8 at the bottom of the cross beam 9, and there is no setting at the bottom of the outer formwork 6 of the counter-camber.

[0041] The above embodiments are only used to explain the technical concept of the present invention, rather than limiting the protection scope of the rights of the present invention. Any non-substantive modification made to the present invention using this concept shall fall within the protection scope of the present invention.

Claims

1. A standardized formwork for the inverted sill of a sunken bathroom, which is used for the integrated construction of a cast-in-place floor slab (1), a cast-in-place lowered slab (2), and a cast-in-place inverted sill (3), and is characterized in that: It includes a bottom formwork (4), a cross beam (9), an inner formwork (7) of the inverted beam, an outer formwork (6) of the inverted beam, a support block (8), a connecting beam and a conical cylinder support (12); the bottom formwork (4) includes a floor side bottom formwork, a sunken floor side bottom formwork and an outer formwork of the shear wall, and the upper and lower ends of the outer formwork of the shear wall are respectively connected to the floor side bottom formwork and the sunken floor side bottom formwork; the cross beam (9) is arranged at the four corners and the middle parts of the four sides of the cast-in-place sunken floor (2), the inner formwork (7) of the inverted beam is fixed to the lower surface of the inner end of each cross beam (9), the outer formwork (6) of the inverted beam is fixed to the lower surface of the middle part of each cross beam (9), a support block (8) is fixed to the lower surface of the outer end of each cross beam (9), a conical cylinder support (12) is arranged at the bottom of the support block (8) or / and the outer formwork (6) of the inverted beam, and the bottom of the conical cylinder support (12) is detachably connected to the floor side bottom formwork; the symmetrically arranged cross beams (9) are connected to each other through connecting beams.

2. The prefabricated formwork for the anti-overflow sill of the sunken toilet according to claim 1, wherein: The inner formwork (7) of the inverted beam is arranged on the cast-in-place sunken floor (2) side of the cast-in-place inverted beam (3), and the inner formwork (7) of the inverted beam includes a fixed formwork (701) at the upper part and an arc angle formwork (702) at the lower part. The fixed formwork (701) and the arc angle formwork (702) are spliced by fixing bolts (13) to form the size of the cast-in-place inverted beam (3). The top of the arc angle formwork (702) is a right angle and the bottom is an arc angle; the top of the fixed formwork (701) is fixed to the end of the cross beam (9) by a fixing bolt (13), the top elevation of the fixed formwork (701) is the top elevation of the cast-in-place inverted beam (3), and the bottom elevation of the arc angle formwork (702) is the top elevation of the cast-in-place sunken floor (2).

3. The prefabricated formwork for the anti-overflow sill of the sunken bathroom according to claim 1, characterized in that: The outer formwork (6) of the inverted beam is arranged on the cast-in-place floor (1) side of the cast-in-place inverted beam (3), and the top is fixed to the middle of the cross beam (9) by a fixing bolt (13). The top elevation of the outer formwork (6) of the inverted beam is the top elevation of the cast-in-place inverted beam (3), and the bottom elevation is the top elevation of the cast-in-place floor (1).

4. The prefabricated formwork for the anti-overflow sill of the sunken toilet according to claim 1, characterized in that: The cross beam (9) is an I-shaped cross-section beam, and the connecting beam includes a connecting cross beam (10) and a connecting longitudinal beam (11), and both the connecting cross beam (10) and the connecting longitudinal beam (11) are channel-shaped cross-sections; bifurcated grooves (1001) are arranged in the middle of both ends of the connecting cross beam (10), the bifurcated grooves (1001) are inserted into the web of the cross beam (9) and fixed to the bottom of the upper flange of the cross beam (9) arranged along the long side of the cast-in-place sunken floor (2) by fixing bolts (13); both ends of the connecting longitudinal beam (11) are fixed to the top of the upper flange of the cross beam (9) arranged along the short side of the cast-in-place sunken floor (2) by fixing bolts (13), thereby forming a connecting beam that is vertically and horizontally staggered and vertically offset.

5. The prefabricated formwork for the inverted sill of the sunken bathroom according to claim 1, wherein: The height of the described conical cylinder support (12) is the same as that of the cast-in-place floor slab (1). The conical cylinder support (12) includes an external conical outer cylinder (1206) and an internal threaded cylinder (1201) of the same height. The outer diameter of the external conical outer cylinder is larger at the top and smaller at the bottom. The upper and lower ends of the external conical outer cylinder (1206) and the internal threaded cylinder (1201) are formed into a whole by welding plates (1204), and a pulling groove (1205) is provided on the large-diameter welding plate (1204); the bottom of the conical cylinder support (12) is fixed to the side bottom formwork of the floor slab through a bottom plate fixing bolt (1203), and the top is fixed to the bottom of the inverted sill outer formwork (6) or the support block (8) through an aluminum formwork fixing bolt (1202).

6. The prefabricated template for the counter-curb of the sunken toilet according to claim 1, characterized in that: The lower flanges on both sides of the cross beam (9) at the four corners are connected to the inverted sill inner formwork (7) or the inverted sill outer formwork (6) of the adjacent two sides, so that the inverted sill inner formwork (7) or the inverted sill outer formwork (6) of the adjacent right-angled sides are spliced into a whole.

7. The prefabricated formwork for the inverted sill of the sunken bathroom according to claim 1, characterized in that: The bottom surfaces of the described support block (8) and the inverted sill outer formwork (6) are both at the top elevation of the cast-in-place floor slab (1).

8. A construction method for integral pouring of the sunken toilet anti-camber using the standardized formwork for the sunken toilet anti-camber described in claim 1, characterized in that, It includes the following steps: S1. Set up the bottom formwork (4); S2. Fabrication and installation of the conical cylinder support (12): Fabricate the conical cylinder support (12) and position and install the conical cylinder support (12) on the bottom formwork (4). The conical cylinder supports (12) are arranged in two inner and outer circles; S3. Installation of the inverted sill outer formwork (6) and the support block (8): Install the inverted sill outer formwork (6) on the inner-circle conical cylinder support (12), and install the support block (8) on the outer-circle conical cylinder support (12); S4. Installation of the cross beam (9) and the inverted sill inner formwork (7): Lap the middle part of the cross beam (9) on the inverted sill outer formwork (6), lap the outer end of the cross beam (9) on the support block (8), and install the inverted sill inner formwork (7) on the lower surface of the inner end of the cross beam (9); S5. Installation of the connecting beam: Install the connecting beam between the symmetrically arranged cross beams (9); S6. Integrally pour concrete: Carry out the integral pouring of the concrete for the cast-in-place floor slab (1), the cast-in-place dropped slab (2), and the cast-in-place inverted sill (3), and cure; S7. Demolition of the standardized formwork: After the cast-in-place floor slab (1), the cast-in-place dropped slab (2), and the cast-in-place inverted sill (3) reach the required strength, sequentially demolish the components of the standardized formwork. The demolition sequence is: connecting longitudinal beam (11), connecting cross beam (10), cross beam (9), inverted sill inner formwork (7), inverted sill outer formwork (6), support block (8); S8. Demolition of the conical cylinder support (12), leaving a conical groove (14) at the cast-in-place floor slab; S9. Filling with expansion mortar: Inject expansion mortar into the conical groove (14) to form a conical expansion mortar body (5).

Images