Multi-grate gutter inlet integral forming construction method

Abstract

The invention belongs to the field of municipal engineering, and particularly relates to a multi-grate gutter inlet integral forming construction method, a novel gutter inlet template is adopted, a U-shaped lintel template is placed at a notch of the gutter inlet template, and a gutter inlet can be formed through one-time pouring. According to the construction method, all structures of the gutter inlet are integrally formed, the construction quality and efficiency of the gutter inlet are improved, the well grate frame is constructed through the post-sinking method, the integrity of the well grate frame and other structures of the gutter inlet is greatly improved, and the construction quality of the gutter inlet is improved; according to the gutter inlet formwork, the integrity of the formwork is improved through the inner supporting assemblies and the reinforcing assemblies in the gutter inlet formwork, and formwork deformation is effectively prevented.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of municipal engineering, and particularly relates to a multi-grating rainwater inlet integrated forming construction method. BACKGROUND

[0002] The rainwater inlet is a facility in the urban drainage system, which is used for collecting and discharging rainwater. At present, the rainwater inlet construction method is generally divided into two ways of bricklaying and cast-in-place. The bricklaying rainwater inlet construction has problems of long cycle, large labor intensity, difficult construction quality guarantee, and difficult maintenance. The cast-in-place rainwater inlet construction is divided into two methods of integral pouring and step-by-step pouring. The integral pouring is suitable for single-grating rainwater inlets. When the double-grating rainwater inlet or the multi-grating rainwater inlet is used, the overpassing beam between adjacent rainwater inlets will cause various problems such as difficult form removal, difficult reinforcement placement, and difficult pouring. Therefore, the multi-grating rainwater inlet is currently constructed by the step-by-step pouring method. The first step is to pour to the bottom of the ring beam, and the second step is to pour the ring beam and the overpassing beam and install the well grating. The rainwater inlet structure by the step-by-step pouring method has poor integrity, and the rainwater inlet is easily damaged by long-time vehicle rolling, which greatly affects the rainwater inlet water collection capacity, causes water ponding at the rainwater inlet position, and affects the vehicle driving safety and reduces the urban appearance image. SUMMARY

[0003] The present application aims to overcome the problems in the background art and provide a multi-grating rainwater inlet integrated forming construction method.

[0004] The multi-grating rainwater inlet integrated forming construction method comprises the following steps: Step one: excavate the rainwater inlet foundation pit; Step two: pour the concrete cushion layer at the bottom of the rainwater inlet foundation pit; Step three: install the rainwater inlet formwork; wherein the rainwater inlet formwork comprises side formwork and corner formwork assembled together, and a notch is left at the upper part of the side formwork corresponding to the position of the overpassing beam, and the notches of the two side formworks are overlapped with the U-shaped overpassing beam formwork; Step four: hoist the rainwater inlet formwork into the rainwater inlet foundation pit, align the notch position of the side formwork with the overpassing beam position, overlap the overpassing beam formwork on the notch, and bind the ring beam reinforcement; Step five: pour the concrete into the rainwater inlet foundation pit, and the pouring height of the concrete is flush with the middle surface layer of the road asphalt; Step six: after the initial setting of the concrete, insert the well grating frame downward into the concrete; Step seven: after the complete setting of the concrete, remove the rainwater inlet formwork; Step eight: install the rainwater grating on the well grating frame.

[0005] As a preferred scheme: In the step two, the thickness of the concrete cushion layer is 10 cm.

[0006] The connecting surfaces of the side mold template and the corner template are inclined surfaces.

[0007] The rainwater inlet template is internally provided with a plurality of reinforcing assemblies, the reinforcing assemblies include long-axis horizontal cross beams and short-axis horizontal cross beams, the long-axis horizontal cross beams are fixed on the inner side surfaces of the side mold templates, the long-axis horizontal cross beams are fixed with the corner templates at the two ends, the short-axis horizontal cross beams are fixed on the corner templates, and the short-axis horizontal cross beams are vertically connected with the long-axis horizontal cross beams at the two ends.

[0008] The long-axis horizontal cross beams are externally fixed with inclined support blocks, the inclined angles of the inclined support blocks are consistent with the inclined surfaces, and the inclined support blocks abut against the inner side surfaces of the corner templates along the inclined surfaces.

[0009] The long-axis horizontal cross beams and the short-axis horizontal cross beams are all channel steels.

[0010] The long-axis horizontal cross beams are provided with inner support assemblies, the inner support assemblies include vertical fixed shafts, the fixed shafts are fixed on the long-axis horizontal cross beams at any one side, a horizontal rotating shaft is rotatably connected with the fixed shaft at one end, and the other end of the rotating shaft is an inclined notch, and the rotating shaft abuts against the long-axis horizontal cross beam at the other side when the rotating shaft is perpendicular to the long-axis horizontal cross beam.

[0011] In the fourth step, square timbers are used to support the rainwater inlet template from all around.

[0012] In the seventh step, when the rainwater inlet template is removed, the side mold templates and the corner templates are removed first, and the overpass template is removed last.

[0013] The construction method of the rainwater inlet can integrally form all structures of the rainwater inlet and can form the rainwater inlet at one time, so that the construction quality and efficiency of the rainwater inlet are greatly improved; the well grating frame is constructed by using the post-sinking method, the installation process of the well grating frame is preposed, the integrity of the well grating frame and other structures of the rainwater inlet is greatly improved, and the construction quality of the rainwater inlet is improved; the inner support assemblies and the reinforcing assemblies in the rainwater inlet template improve the integrity of the template and effectively prevent the template from deforming. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram before concrete pouring of the embodiment; Figure 2 It is a structural schematic diagram of rainwater inlet pit excavation of the embodiment; Figure 3 It is a structural schematic diagram of side mold template assembly of the embodiment; Figure 4 It is a structural schematic diagram of corner template assembly of the embodiment; Figure 5 It is a structural schematic diagram of assembled rainwater inlet template of the embodiment; Figure 6 It is a structural schematic diagram of hoisted rainwater inlet template of the embodiment; Figure 7 Structure schematic diagram of the well grating frame after insertion of the embodiment; Figure 8 Structure schematic diagram of the well grating frame after insertion of the embodiment; Figure 9 Structure schematic diagram of the well grating frame after insertion of the embodiment; Figure 10 Structure schematic diagram of the well grating frame after insertion of the embodiment; Figure 11 Structure schematic diagram of the well grating frame after insertion of the embodiment; Figure 12 Structure schematic diagram of the well grating frame after insertion of the embodiment.

[0015] In the figure, 1 is a rainwater inlet pit, 2 is a concrete cushion layer, 3 is a side mold template, 4 is a corner template, 5 is a gap, 6 is a beam template, 7 is a ring beam reinforcement, 8 is an asphalt intermediate surface layer, 9 is a well grating frame, 10 is a rainwater grate, 11 is an inclined surface, 12 is a long axis horizontal cross beam, 13 is a short axis horizontal cross beam, 14 is an inclined support block, 15 is a fixed shaft, 16 is a rotating shaft, 17 is an inclined cutout, and 18 is a square timber. DETAILED DESCRIPTION

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application.

[0017] The integrated construction method of the multi-grate rainwater inlet of the present application is realized on the basis of an improved rainwater inlet template. The traditional multi-grate rainwater inlet template includes a side mold template 3, a corner template 4 at four corners, and a beam template 6. The beam template 6 between adjacent rainwater inlets is either integrated with the entire rainwater inlet template or is fixedly connected with the side mold template 3 of the rainwater inlet template through bolts. It is difficult or impossible to remove the template in the later stage, so the rainwater inlet can only be constructed in the form of multiple pouring. The present application improves the existing rainwater inlet template, and the improvement is described in detail as follows: The rainwater inlet template of the present application is provided with a U-shaped beam template 6, and the side template 3 is provided with a notch 5 at the position of the rainwater inlet beam, and the U-shaped beam template 6 is placed at the position of the notch 5 of the side template 3. Different from the existing beam template 6, the beam template 6 of the present application is only placed on the notch 5 of the side template 3, and does not need any connecting piece for connection. The front and rear sides of the beam template 6 are respectively in the same vertical plane with the outer sides of the side template 3, and the upper surface of the beam template 6 is flush with the upper surface of the side template 3. The rainwater inlet template thus designed can realize one-time pouring, and the concrete can be directly poured into the U-shaped opening of the beam template 6, and the beam template 6 can be directly removed downward after the side template 3 and the corner template 4 are removed, thereby solving the problem of integral pouring and demoulding.

[0018] In order to make the corner template 4 and the side template 3 more convenient to demould, the connecting surfaces of the corner template 4 and the side template 3 are both provided with corresponding inclined surfaces 11, i.e. the connecting surfaces of the corner template 4 and the side template 3 are not perpendicular to the side template 3, but form an obtuse angle with the side template 3, and the angle is generally between 120°-140°. The inclined surface 11 is designed because the corner template 4 and the side template 3 can be quickly demoulded by being inwardly staggered along the inclined surface 11, thereby saving labor and time. The corner template 4 and the side template 3 connected by the inclined surface 11 already exist, and thus will not be described in detail here.

[0019] The inner support assembly and the reinforcing assembly of the corner template 4 and the side template 3 are relatively complex, and need to be connected in pieces. The reinforcing assembly of the present application is integrated with the inner support assembly, and includes a long-axis horizontal beam 12 and a short-axis horizontal beam 13. The long-axis horizontal beam 12 and the short-axis horizontal beam 13 surround the rainwater inlet template, and play a supporting and reinforcing role on the inside of the rainwater inlet template. The left and right ends of the long-axis horizontal beam 12 abut against the inner side of the corner template 4, and are fixed to the corner template 4 by bolts. The long-axis horizontal beam 12 is fixed to the side template 3 by bolts along the length direction of the side template 3. The long-axis horizontal beams 12 on the two sides are symmetrically arranged, and the short-axis horizontal beam 13 is connected between the long-axis horizontal beams 12. The short-axis horizontal beam 13 is fixed to the corner template 4 by bolts, and the two ends of the short-axis horizontal beam 13 are fixed to the long-axis horizontal beams 12 on the two sides. The short-axis horizontal beams 13 on the two sides are also symmetrically arranged. The long-axis horizontal beams 12 and the short-axis horizontal beams 13 form a rectangular reinforcing frame as a whole, as shown in the attached drawings. Figure 9As shown, several such reinforcement frames are fixed from bottom to top inside the gully formwork, with the upper surface of the topmost reinforcement frame positioned below the notch 5. Preferably, diagonal bracing blocks 14 are also fixed outward at both ends of the long-axis horizontal beam 12. The inclination angle of the diagonal bracing blocks 14 is consistent with the inclined surface 11 connecting the corner formwork 4. The diagonal bracing blocks 14 abut the inner surface of the corner formwork 4 along the inclined surface 11. Preferably, the long-axis horizontal beam 12 and the short-axis horizontal beam 13 are made of channel steel.

[0020] The present invention also innovatively sets an internal support assembly on the reinforcement assembly, and the internal support assembly includes a fixed shaft 15, which is a vertical short shaft. The fixed shaft 15 is fixed to the long axis horizontal beam 12, and a horizontal rotating shaft 16 is rotatably connected to the fixed shaft 15 at one end. The rotating shaft 16 can rotate around the fixed shaft 15. In this embodiment, a circular hole is provided on the rotating shaft 16 that passes through the circular hole to realize the rotation connection between the rotating shaft 16 and the fixed shaft 15. The other end of the rotating shaft 16 is an oblique cut 17, as shown in the attached figure. Figure 10 As shown, when the rotating shaft 16 is rotated to be perpendicular to the long axis horizontal beam 12, it can press against the long axis horizontal beam 12 on the other side, that is, when the rotating shaft 16 is rotated to be perpendicular to the long axis horizontal beam 12, it abuts against the long axis horizontal beam 12 on the other side. The setting of the bevel cut 17 can ensure that the rotating shaft 16 can be rotated to a state perpendicular to the long axis horizontal beam 12. The present invention can set a plurality of such internal support components between the long axis horizontal beams 12 on both sides. In this embodiment, two internal support components are set on each reinforcement component, as shown in the attached figure. Figure 9 As shown, the internal support assembly of the present invention not only improves the integrity of the gully template but also effectively prevents the gully template from deformation.

[0021] The multi-grating rainwater inlet integral molding construction method of the present invention is completed based on the above-mentioned rainwater inlet template, comprising the following steps: Step 1: Excavation of rainwater inlet foundation pit 1 As attached Figure 2 As shown, the road stormwater inlet is generally constructed after the construction of the road asphalt middle surface layer 8 is completed. First, the four endpoints of the stormwater inlet are extracted from the stormwater inlet design drawing, the construction line is hung to cut the asphalt middle surface layer 8, the position of the stormwater inlet is marked, and then the earthwork of the stormwater inlet foundation pit 1 and the earthwork of the upper ring beam are excavated. The excavation of the stormwater inlet foundation pit 1 is a routine step in the construction of existing stormwater wells and will not be elaborated here.

[0022] Step 2: Pour concrete cushion layer 2 into the rainwater inlet foundation pit 1 A concrete cushion layer 2 is poured at the bottom of the excavated rainwater inlet foundation pit 1. Generally, the thickness of the concrete cushion layer 2 is about 10 cm.

[0023] Step 3: Install the rainwater inlet template Firstly, assemble one side of the side formwork template 3, after the side formwork template 3 is assembled, fix the long axis horizontal beam 12 at the lower part of the side formwork template 3, the long axis horizontal beam 12 is fixed with the side formwork template 3 by bolts, as shown in the accompanying drawings; then install the corner template 4 at both sides of the side formwork template 3, the corner template 4 is fixed with the side formwork template 3 and the long axis horizontal beam 12, at the same time, the inclined support block 14 tightly abuts against the inner side of the corner template 4; install the upper long axis horizontal beam 12, the upper long axis horizontal beam 12 is fixed with the corner template 4 and the side formwork template 3, as shown in the accompanying drawings; then assemble the side formwork template 3, the corner template 4 and the long axis horizontal beam 12 at the other side in the same way, connect the corner templates 4 at both sides; then fix and connect the short axis horizontal beam 13 between the long axis horizontal beams 12 at both sides, the short axis horizontal beam 13 is fixed with the corner templates 4 at both sides; finally, rotate the rotating shaft 16 on the long axis horizontal beam 12 at one side, let the rotating shaft 16 rotate to be perpendicular to the long axis horizontal beam 12 and tightly abut against the long axis horizontal beam 12 at the other side, thus the gully formwork is installed, as shown in the accompanying drawings. Figure 3 Figure 4 Figure 5

[0024] Step four: hoist the gully formwork and bind the ring beam steel bars 7 Hoist the gully formwork installed in step three into the gully foundation pit 1 and place it on the concrete cushion 2, as shown in the accompanying drawings, let the gap 5 of the side formwork template 3 align with the designed beam position, then place the beam formwork 6 at the gap 5 position, the opening of the beam formwork 6 faces upward, the beam formwork 6 overlaps the gap 5 of the side formwork template 3. Then bind the ring beam steel bars 7, after the ring beam steel bars 7 are bound, in order to further ensure the stability of the gully formwork, square timbers 18 can be temporarily used at the upper part of the gully formwork to abut against the outer part of the gully formwork from all around to prevent displacement, as shown in the accompanying drawings. Figure 6 Figure 1 12 When the concrete is about to be poured to the position of the square timber 18, remove the square timber 18.

[0025] Step five: concrete pouring Pour concrete into the gully foundation pit 1, the pouring height is level with the road asphalt surface course 8.

[0026] Step six: installation of the well grating frame 9 After the poured concrete is initially set, insert the well grating frame 9 made into the concrete, let the well grating frame 9 be solidified with the concrete, as shown in the accompanying drawings. Figure 7

[0027] Step seven: removal of the gully formwork ​​​​​​After the concrete is completely solidified, the gully formwork is removed. When the formwork is removed, the inner support assembly is disabled by rotating the rotating shaft 16, and then the long shaft horizontal beam 12 and the short shaft horizontal beam 13 are removed by using an electric wrench. The bolts connecting the formwork are removed, the side formwork 3 or the corner formwork 4 is pried from the inside of the gully along the slope 11 connected to the side formwork 3 and the corner formwork 4, and the side formwork 3 and the corner formwork 4 are separated. Then, the side formwork 3 and the corner formwork 4 are removed one by one. Finally, the lintel formwork 6 is pressed down or knocked, and the lintel formwork 6 is removed.

[0028] Step eight: installation of the gully grate 10 The gully grate 10 is installed on the gully frame 9. The installation process is the same as the existing process, and thus is not described here. The gully construction is completed, as shown in FIG. 8. Figure 8

[0029] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same. Those skilled in the art should understand that the technical solutions described in the above examples can still be modified, or some technical features can be replaced by equivalent features. Such modifications or replacements do not change the essence of the corresponding technical solutions, and thus do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application.​

Claims

1. A method for integrally forming a multi-grating rainwater inlet, characterized by: The method comprises the following steps: Step 1: excavate the gully pit (1); Step 2: pour the concrete cushion (2) at the bottom of the gully pit (1); Step 3: install the gully formwork; The gully formwork comprises the side formwork (3) and the corner formwork (4) which are assembled together, the side formwork (3) is provided with a notch (5) at the upper portion corresponding to the gully beam position, the notches (5) of the side formwork (3) on both sides are overlapped with the U-shaped gully beam formwork (6); Step 4: hoist the gully formwork into the gully pit (1), align the notch (5) of the side formwork (3) with the gully beam position, overlap the gully beam formwork (6) on the notch (5), and bind the ring beam steel bars (7); Step 5: pour the concrete into the gully pit (1), and the pouring height of the concrete is flush with the road asphalt surface (8); Step 6: after the initial setting of the concrete, insert the gully frame (9) into the concrete; Step 7: after the complete setting of the concrete, remove the gully formwork; Step 8: install the gully grate (10) on the gully frame (9).

2. The method of claim 1, wherein: In the step 2, the thickness of the concrete cushion (2) is 10 cm.

3. The method of claim 1, wherein: In the step 3, the connecting surfaces of the side formwork (3) and the corner formwork (4) are inclined surfaces (11).

4. The method of claim 1, wherein: In the step 3, the gully formwork is provided with a plurality of reinforcing components, the reinforcing components comprise the long-axis horizontal cross beams (12) and the short-axis horizontal cross beams (13), the long-axis horizontal cross beams (12) are fixed on the inner side of the side formwork (3), the long-axis horizontal cross beams (12) are fixed with the corner formwork (4) at both ends, the short-axis horizontal cross beams (13) are fixed on the corner formwork (4), and the short-axis horizontal cross beams (13) are vertically connected with the long-axis horizontal cross beams (12) at both ends.

5. The method for integrally forming a multi-grating rainwater inlet according to claim 4, characterized in that: The long-axis horizontal cross beams (12) are fixed with the inclined support blocks (14) at both ends, the inclined angle of the inclined support blocks (14) is consistent with the inclined surface (11), and the inclined support blocks (14) abut against the inner side of the corner formwork (4) along the inclined surface (11).

6. The method of claim 4, wherein: The long-axis horizontal cross beams (12) and the short-axis horizontal cross beams (13) are all channel steels.

7. The method of claim 4, wherein: The long-axis horizontal cross beams (12) are provided with an inner support component, the inner support component comprises a vertical fixed shaft (15) and a horizontal rotating shaft (16), the fixed shaft (15) is fixed on any long-axis horizontal cross beam (12), one end of the rotating shaft (16) is rotatably connected with the fixed shaft (15), the other end of the rotating shaft (16) is an inclined notch (17), and the rotating shaft (16) abuts against the other long-axis horizontal cross beam (12) when the rotating shaft (16) is rotated to be perpendicular to the long-axis horizontal cross beam (12).

8. The method of claim 1, wherein: In the step 4, the square wood (18) is used to support the outer portion of the gully formwork.

9. The method of claim 1, wherein: In the step 7, when the gully formwork is removed, the side formwork (3) and the corner formwork (4) are removed first, and the gully beam formwork (6) is removed last.

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