Concrete support supporting structure for cast-in-place slab and haunched position and matched mold and method thereof

Abstract

The invention discloses a concrete support supporting structure for cast-in-place slabs and haunched positions. The concrete support supporting structure comprises a concrete support and a supporting system. The concrete support comprises a support body structure and a vertical rod butt joint structure located at the upper end of a support body. The support body structure is formed by pouring concrete, the surface of the support body structure is rough, and the height is equal to the thickness of a cast-in-place slab. The supporting system comprises a vertical rod, a bottom horizontal tube, a horizontal rod, a top support, a horizontal rod, a supporting block and a formwork. The lower end of each vertical rod is inserted into the vertical rod butt joint structure of the concrete support, the bottom of each vertical rod is fixedly connected with the bottom horizontal tube, and a T-shaped jacking is arranged on the upper portion of each vertical rod. A plurality of supporting blocks are arranged on the upper end face of the horizontal rod. The invention further discloses a corresponding mold and a construction method, the risk of water leakage is reduced, the stability and safety of a supporting system are improved when a plurality of concrete members are poured at the same time, the construction efficiency is improved, and the construction cost is reduced.

Description

Technical Field

[0001] The invention belongs to the field of building construction, and in particular relates to a concrete support for cast-in-place slabs and haunches and a matching mould and method thereof. Background Art

[0002] In construction projects, common high-rise residential projects generally consist of two major parts: a garage and a main building. The garage roof often needs to be backfilled with soil to bury a comprehensive pipeline network and plant greenery. Therefore, the structural elevation of the first floor of the main building will be higher than the structural elevation of the garage roof. Retaining walls are designed at the height difference to reduce the risk of water leakage. Specifications and designers will require that the garage roof, retaining walls, and additional cantilever components on the outside of the retaining wall (bay windows, balconies, air-conditioning panels, etc.) be cast at one time without producing construction joints to avoid possible water leakage after backfilling.

[0003] In some construction projects, due to the particularity of the design, the lower cast-in-place slab, the upper cantilevered cast-in-place slab and the reinforced concrete wall between the two are required to be cast at the same time, and cannot be cast in batches to avoid construction joints.

[0004] According to the on-site investigation, in order to achieve the purpose of pouring the above-mentioned multiple components at the same time, the most commonly used construction method for on-site construction is to install a "earth"-shaped steel frame on the lower cast-in-place slab that has been tied, and insert steel pipes on the steel frame to form a steel pipe support system. However, this method has the following defects: 1. Since the "earth"-shaped steel frame is in direct contact with the formwork surface, after the concrete is poured and the formwork is removed, there will often be leakage and rust, and the visual quality is very poor; 2. Since the "earth"-shaped steel frame is very simple in structure, it is only composed of 3 steel bars welded together, the force is unstable, and it is easy to twist or fall, so the safety of the upper support system cannot be guaranteed; 4. After the formwork support system is removed, the exposed steel bar heads on the surface of the lower cast-in-place slab need to be cut off for the second time, which consumes a lot of manpower; 5. After the above-mentioned concrete components are poured and before reaching the fully formed strength, the disturbance of the steel pipe support system by the external construction load will cause gaps between the "earth"-shaped steel bars and the poured concrete, which is easy to leak water along the empty gaps.

[0005] According to on-site investigations, another construction method is to insert the support system steel pipes directly into the lower cast-in-place slab that has been tied. The steel pipes are in contact with the bottom formwork of the lower cast-in-place slab. Due to the small cross-sectional area of ​​the steel pipes, the weight and deadweight of the upper components will damage the bottom formwork of the lower cast-in-place slab, and concrete cannot be poured in the steel pipes, which seriously violates the "Concrete Engineering Quality Acceptance Code" and the "Uniform Standard for Safety Technology of Construction Scaffolding".

[0006] Some existing concrete pads, although they have solved the need for steel bar binding to a certain extent, face problems such as low versatility, inability to serve as support system supports, difficulty in installation, design restrictions due to steel bar spacing, poor combination with newly poured concrete, and insufficient strength of fixing elements. In actual construction, there are defects such as low efficiency, high cost, poor stability and potential leakage risks, which limit their potential for wider application. Summary of the invention

[0007] In view of the defects of construction safety and quality risks existing in the above-mentioned background technology, the present invention proposes a concrete bearing, a concrete bearing matching mold for production and a construction method of the bearing and the mold, which can quickly complete the overall casting of the lower cast-in-place slab, the upper cast-in-place slab, the middle reinforced concrete and the axil component while ensuring quality and safety.

[0008] In view of the above problems, the technical solution adopted by the present invention is: a concrete support structure for cast-in-place slabs and haunches, comprising a concrete support and a support system fixedly arranged on the concrete support;

[0009] The concrete support includes a support body structure and a vertical rod docking structure located at the upper end of the support body; the support body structure is cast by concrete, its surface is rough and its height is equal to the thickness of the cast-in-place slab (2); (the strength grade of the concrete body is the same as the strength grade of the concrete of the cast-in-place slab (2) and the upper surface of the concrete body)

[0010] The support system includes vertical poles, sweeping poles, horizontal poles, top supports, horizontal poles, support blocks and formwork; there are multiple vertical poles, the lower end of each vertical pole is inserted into the vertical pole docking structure of the concrete support, the bottom of each vertical pole is fixedly connected to the sweeping pole, and the upper part of each vertical pole is provided with a T-shaped top support, which is connected to the horizontal pole and plays a lifting role for the horizontal pole; the upper end surface of the horizontal pole is provided with multiple support blocks, such as block structures made of wooden squares, and the formwork is arranged on the upper ends of the multiple support blocks.

[0011] Furthermore, the support body structure is generally cylindrical, truncated cone or rectangular.

[0012] Furthermore, the upright pole docking structure is a tubular circular groove which is arranged on the upper end surface of the support body structure and is recessed downward, and the tubular circular groove is embedded in the lower part of the upright pole.

[0013] Furthermore, it also includes a leg structure located at the lower end of the support body, the leg structure is a plurality of No. 2 support legs arranged evenly in the circumference of the lower end surface of the support body structure, and a gap is formed between the plurality of No. 2 support legs for the steel bars to pass through; the vertical pole docking structure is a tubular circular groove arranged on the upper end surface of the support body structure and concave downward, and the tubular circular groove is embedded with the lower part of the vertical pole. Further, it also includes a leg structure located at the lower end of the support body, the leg structure is a plurality of No. 3 support legs arranged evenly in the circumference of the lower end surface of the support body structure, and a gap is formed between the plurality of No. 3 support legs for the steel bars to pass through; the vertical pole docking structure is a hollow cube or cuboid arranged on the upper end surface of the support body structure and protruding upward.

[0014] Furthermore, it also includes an axil support system arranged at the inner corner;

[0015] The support system of the added armpit is composed of formwork, support blocks, horizontal rods, top supports, vertical rods, steel pipe trays, tray sleeves, and connecting rods. The support system composed of the above components falls on the No. 1 concrete support as a whole.

[0016] Insert a connecting rod into the center of the upper surface of the No. 1 concrete support with an insertion depth of at least 5 cm. The total height of the connecting rod is the insertion depth plus the exposed height. Before the axil reinforcement is tied and the axil formwork is installed, install the concrete support with the connecting rod at the bottom of the axil component, then install the axil formwork, and make holes at the corresponding positions of the axil formwork at the exposed part of the connecting rod; the vertical pole is located on the steel pipe pallet, and the lower part of the steel pipe pallet is equipped with a pallet sleeve, which is a hollow cylinder and is inserted into the connecting rod.

[0017] Furthermore, it includes a No. 1 mold barrel body with a hollow shell structure and open at both ends, a circle of No. 1 mold barrel ears protruding outward from the lower edge of the No. 1 mold barrel body, and a No. 1 mold bottom plate detachably connected to the No. 1 mold barrel ears, and the No. 1 mold bottom plate can cover and close the lower open end of the No. 1 mold barrel body.

[0018] Furthermore, it includes a No. 2 mold barrel body with a hollow shell structure and open at both ends, a circle of No. 2 mold barrel ears protruding outward from the lower edge of the No. 2 mold barrel body, and a No. 2 mold bottom plate detachably connected to the No. 2 mold barrel ears, and the No. 2 mold bottom plate can cover and close the lower open opening of the No. 2 mold barrel body; the lower part of the No. 2 mold bottom plate is attached with a plurality of No. 2 mold legs with a hollow shell structure and open at the upper end. In order to allow the lower layer of the plate to pass smoothly, the No. 2 mold legs are symmetrically arranged along the periphery of the No. 2 mold bottom plate, and gaps are formed between the legs, which can meet the passage of steel bars; a plurality of holes are opened on the No. 2 mold bottom plate, and the shape of the holes matches the shape of the upper openings of the No. 2 mold legs and the upper ends of the No. 2 mold legs can be embedded.

[0019] Furthermore, it includes a No. 3 mold barrel body with a hollow shell structure and an open lower end, a circle of No. 3 mold barrel ears protruding outward from the lower edge of the mold barrel body, and a No. 3 mold bottom plate detachably connected to the No. 3 mold barrel ears, and the No. 3 mold bottom plate can cover and close the lower open end of the No. 3 mold barrel body; the lower part of the No. 3 mold bottom plate is accompanied by a plurality of No. 3 mold legs with a hollow shell structure and an open upper end. In order to allow the lower layer of the plate to pass smoothly, the No. 3 mold legs are symmetrically arranged along the periphery of the No. 2 mold bottom plate, and gaps are formed between the legs, and the gaps can meet the passage of steel bars; a plurality of holes are opened on the No. 3 mold bottom plate, and the shape of the holes coincides with the shape of the upper openings of the No. 3 mold legs and the upper ends of the No. 3 mold legs can be embedded; the top surface of the No. 3 mold barrel body protrudes upward to form a hollow and upper open square vertical rod docking structure.

[0020] As another aspect of the present invention, it also relates to a construction method of a concrete bearing support structure, characterized in that it comprises the following steps:

[0021] Step 1, mold assembly: according to different mold conditions, all mold components such as mold barrel body, mold barrel ears, mold bottom plate, etc. are fixed by bolts.

[0022] Step 2, pouring concrete: Pour concrete of the same strength grade as the cast-in-place slab into the mold, vibrate the poured concrete to make it dense, and use a grooved steel pipe to press into the circular groove on the upper surface of the poured concrete. If there is a haunch member, insert the connecting rod.

[0023] Step 3, mold removal: After the concrete reaches a certain strength, remove the bolts and dismantle all molds to obtain the formed concrete support.

[0024] Step 4, support installation: Install the formed supports in the cast-in-place slab according to the spacing and distribution of the upper and lower reinforcements of the slab or when there are axillary components.

[0025] Step 5, support system installation: install the support system consisting of the formwork, support blocks, horizontal rods, top supports, horizontal rods, vertical rods, and sweeping rods under the upper structure plate and place them on the support; when there are axil components, use a small hand drill to drill holes at the intersection of the connecting rods passing through the axil formwork, and then install the steel pipe pallet with a pallet sleeve, and finally install the other support system components described in this step.

[0026] Step 6, integral pouring: After the concealed works are accepted, the cast-in-place slabs, retaining walls, upper structure slabs, and axil components, if any, shall be poured with integral concrete and vibrated to make them dense.

[0027] Step 7, dismantle and recycle the support system: after the concrete strength grade reaches 100% of the design strength grade, dismantle the support system and recycle it with prefabricated concrete supports in other identical locations.

[0028] The beneficial effects and features of the present invention are:

[0029] (1) The present invention is used for the concrete support of cast-in-place slabs and axils; through the prefabricated concrete support and the matching mold, the stability and safety of the support system when multiple concrete components are cast at the same time are solved, thereby ensuring construction safety.

[0030] (2) The present invention is used for the concrete support of cast-in-place slabs and gussets; by using the inner surface embossed steel plate, the outer surface of the prefabricated concrete support is rough, which can be more effectively combined with the later poured concrete, solves the problem of construction joints, reduces the risk of water leakage, and ensures the construction quality.

[0031] (3) The present invention is used for the concrete support of cast-in-place slabs and truncated slabs; by pressing grooves on the upper surface of the concrete support, the upper steel pipe can be directly and firmly placed on the support, which is convenient for installation and removal, simplifies the construction process, and reduces construction costs.

[0032] (4) The concrete support for cast-in-place slabs and axillary parts of the present invention has a flat and smooth bottom surface, which is consistent with the appearance of the later poured concrete, thus ensuring the visual quality after pouring;

[0033] (5) The present invention is used for cast-in-place slabs and concrete supports at the axils; all molds and support systems can be recycled and reused after one use or dismantling, which not only reduces construction costs but also increases construction efficiency and can effectively ensure construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a vertical cross-sectional view of a preferred embodiment of the present invention when the upper layer reinforcement and the lower layer reinforcement of the plate are located on the same vertical line;

[0035] Figure 2 This is a bottom elevation view of the matching mold for the concrete support No. 1 of the preferred embodiment of the present invention;

[0036] Figure 3 This is a vertical view of a grooved steel pipe supporting the first concrete support of the preferred embodiment of the present invention;

[0037] Figure 4 This is a forming elevation view of the concrete support No. 1 of the preferred embodiment of the present invention;

[0038] Figure 5 This is a diagram of the position of the concrete support and slab reinforcement of the preferred embodiment No. 1 of the present invention;

[0039] Figure 6 This is a vertical view of the No. 2 concrete support and the slab reinforcement position of the preferred embodiment of the present invention;

[0040] Figure 7It is a top view of the matching mold of the No. 2 concrete support of the preferred embodiment of the present invention;

[0041] Figure 8 This is a vertical view of the matching mold of the second concrete support of the preferred embodiment of the present invention;

[0042] Fig. 9 This is a bottom elevation view of a set of molds with a No. 2 concrete support in a preferred embodiment of the present invention;

[0043] Fig.10 This is a side elevation view of the No. 2 concrete support of the preferred embodiment of the present invention;

[0044] Fig.11 This is a side bottom elevation view of the second concrete support of the preferred embodiment of the present invention;

[0045] Fig.12 This is a diagram of the position of the concrete support and slab reinforcement No. 2 of the preferred embodiment of the present invention;

[0046] Fig.13 This is a vertical view of the preferred embodiment of the present invention when the upper layer of steel bars is densely packed;

[0047] Fig.14 It is a top view of the matching mold of the No. 3 concrete support of the preferred embodiment of the present invention;

[0048] Fig.15 This is a elevation view of the matching mold of the No. 3 concrete support of the preferred embodiment of the present invention;

[0049] Fig.16 This is a bottom elevation view of the matching mold of the No. 3 concrete support of the preferred embodiment of the present invention;

[0050] Fig.17 This is a side elevation view of concrete support No. 3 of a preferred embodiment of the present invention;

[0051] Fig.18 This is a bottom elevation view of the No. 3 concrete support of the preferred embodiment of the present invention;

[0052] Fig.19 This is a diagram of the position of the concrete support and slab reinforcement No. 3 of the preferred embodiment of the present invention;

[0053] Fig. 20 This is a preferred embodiment of the present invention, in which the wall and the slab have reinforced concrete haunch members;

[0054] Fig.21 This is a vertical view of a tray and a sleeve of a preferred embodiment of the present invention;

[0055] Fig. 22 This is a vertical view of the components of the preferred embodiment of the present invention after assembly;

[0056] Fig.23This is a vertical view of the concrete support, plate reinforcement and axillary reinforcement positions of a preferred embodiment of the present invention; wherein, 1: No. 1 concrete support, 1-1: tubular circular groove, 1-2: No. 1 mold barrel, 1-3: No. 1 mold barrel ear, 1-4: No. 1 mold bottom plate, 1-5: No. 1 bolt, 1-6: grooved steel pipe, 2: cast-in-place plate, 2-1: lower plate reinforcement, 2-2: upper plate reinforcement, 2-3: retaining wall, 2-4: formwork, 3: vertical pole, 3-1: sweeping pole, 3-2: T-type top support, 4: horizontal pole, 4-1: support block (for example, square wood), 4-3: upper structure plate, 6: No. 2 concrete support, 6-1: No. 2 mold barrel, 6-2: No. 2 mold barrel ear, 6-3: No. 2 mold bottom plate ear, 6-4: No. 2 bolt, 6-5: No. 2 mold bottom plate, 6-6: No. 2 mold leg, 6-7: No. 2 support leg, 7: No. 3 concrete support, 7-1: No. 3 mold barrel top, 7-2: No. 3 mold barrel body, 7-3: No. 3 mold barrel ear, 7-4: No. 3 bolt, 7-5: No. 3 mold bottom plate, 7-6: No. 3 mold bottom plate ear, 7-7: No. 3 mold leg, 7-8: top seat, 7-9: No. 3 support leg, 8: concrete support, 8-1: steel pipe tray, 8-2: tray sleeve, 8-3: connecting rod, 9: axil component, 9-1: axil reinforcement, 9-2: axil formwork, 10: concrete casting surface. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] Example 1 (When the upper and lower ribs of the plate are located on the same vertical line)

[0059] See also Figure 1 Due to the need to backfill planting soil within the height range of the cast-in-place slab 2 and the upper structure slab 4-3, the cast-in-place slab 2, retaining wall 2-3 and upper structure slab 4-3 need to be cast at the same time to avoid the formation of construction joints at the junction of new and old concrete due to the multiple castings, which poses the risk of water leakage.

[0060] Figure 1In the embodiment, the upper reinforcement 2-2 and the lower reinforcement 2-1 of the cast-in-place slab 2 are both bidirectionally arranged, and the upper reinforcement and the lower reinforcement are located on the same vertical line. The vertical pole 3, the sweeping pole 3-1, the horizontal pole 3-3, the top support 3-2, the horizontal pole 4, the support block 4-1, and the formwork 2-4 are the support system of the upper structure slab 4-3. The No. 1 concrete support 1 is the lower support of the support system. Before the construction of the upper structure slab 4-3, the concrete support 1 is prefabricated using the matching mold, and then the support system of the upper structure slab 4-3 is set up. The specific method is:

[0061] First, the material used for the No. 1 mold barrel 1-2 is preferably an embossed steel plate, the inner wall of which has a protruding surface pattern, so that the surface of the formed concrete support 1 is rough, so that it can be fully combined with the concrete of the cast-in-place slab 2 poured for the second time without producing a construction joint; the vertical height of the No. 1 mold barrel 1-2 is equivalent to the thickness of the cast-in-place slab 2.

[0062] Then, the No. 1 mold barrel ear 1-3 attached to the bottom of the No. 1 mold barrel body 1-2 is connected and fixed to the No. 1 mold bottom plate 1-4 through bolts 1-5, and then concrete with the same strength grade as the cast-in-place slab 2 is poured into the No. 1 mold barrel body 1-2; before the concrete is finally set and still has plasticity, use Figure 3 The grooved steel pipe 1-6 shown is pressed into a circular groove on the upper surface of the No. 1 concrete support 1. The wall thickness of the grooved steel pipe 1-6 is slightly larger than the vertical pole 3. Similarly, the width of the circular groove formed by it is also slightly larger than the wall thickness of the vertical pole 3, so that the vertical pole 3 can be smoothly inserted when there is a slight deformation. The circular groove is pressed into a depth of about 5mm, and the pressed position is basically concentric with the upper surface of the No. 1 concrete support 1. After the concrete reaches a certain strength grade, the No. 1 bolt 1-5 is removed to separate the No. 1 mold bucket ear 1-3 and the No. 1 mold bottom plate 1-4, and then the No. 1 concrete support 1 is taken out. The effect after molding is shown in FIG. Figure 4 As shown, it is then installed in the cast-in-place slab 2. The positional relationship between the No. 1 concrete support 1 and the upper slab reinforcement 2-2 and the lower slab reinforcement 2-1 is shown in FIG. Figure 5 As shown, the longitudinal and transverse spacing of the No. 1 concrete support 1 is installed at the same as the designed spacing of the vertical pole 3.

[0063] Secondly, insert all the vertical poles 3 into the circular groove 1-1 on the upper surface of the No. 1 concrete support 1, and then install the support system consisting of the sweeping rod 3-1, horizontal rod 3-3, top support 3-2, horizontal rod 4, support block 4-1 and formwork 2-4 in sequence according to the design requirements of the support system. The support system is now completed.

[0064] Secondly, tie the steel bars of the upper structure slab 4-3, and after the acceptance of the hidden project is completed, pour the concrete of the cast-in-place slab 2, retaining wall 2-3, and upper structure slab 4-3 and vibrate to make it dense. The concrete pouring surface 10 formed after the pouring of the cast-in-place slab 2 is flush with the upper surface of the No. 1 concrete support 1.

[0065] Finally, according to the requirements of the specifications, when the concrete strength grade of the upper structure plate 4-3 reaches 100% of the design strength grade, the support system composed of the horizontal rod 4, the top support 3-2, the horizontal rod 3-3, the sweeping rod 3-1, the support block 4-1, the formwork 2-4 and the vertical rod 3 is removed. After the removal, the circular groove 1-1 formed on the upper surface of the No. 1 concrete support 1 has a depth of 5mm, which meets the requirements for the flatness of the concrete surface in the "Concrete Structure Engineering Construction Quality Acceptance Code", so no treatment is required. After the removal, the various components of the support system can be reused in conjunction with the prefabricated No. 1 concrete support 1.

[0066] Example 2 (When the upper ribs and lower ribs of the plate are not located on the same vertical line)

[0067] See also Figure 6 , which is different from Example 1, is that, due to the influence of the on-site construction process, when the upper and lower positions of the plate upper reinforcement 2-2 and the lower plate reinforcement 2-1 are misaligned and not on the same vertical line, the concrete support and its matching mold are changed, specifically:

[0068] For details of matching molds, please see Figure 7 , Figure 8 , Fig. 9 As shown, the No. 2 mold barrel ear 6-2 attached to the lower part of the No. 2 mold barrel body 6-1 is connected and fixed with the No. 2 mold bottom plate ear 6-3 attached to the periphery of the No. 2 mold bottom plate 6-5 through the No. 2 bolt 6-4. The lower part of the No. 2 mold bottom plate 6-5 is attached with 4 No. 2 mold legs 6-6. In order to allow the lower layer of the plate reinforcement 2-1 to pass smoothly, the No. 2 mold legs 6-6 are symmetrically arranged along the periphery of the No. 2 mold bottom plate 6-5, and a "cross" gap is formed between the legs, which can meet the passage of the steel bars.

[0069] After removing the matching mold, the formed No. 2 concrete support 6 is Fig.10 , Fig.11 As shown, after being installed in the cast-in-place slab 2, the positional relationship between the second concrete support 6 and the upper slab reinforcement 2-2 and the lower slab reinforcement 2-1 is shown in FIG. Fig.12 As shown, other construction methods are similar to those in Example 1.

[0070] Example 3 (upper layer reinforcement density):

[0071] See also Fig.13 , which is different from Example 1 and Example 2, because the designers consider factors such as force, the upper reinforcement 2-2 of the cast-in-place slab 2 is reinforced, and its longitudinal and transverse bidirectional spacing is smaller than the spacing of the lower reinforcement 2-1 of the slab. In order to allow the reinforced upper reinforcement 2-2 to pass smoothly, the concrete support and its matching mold are changed, specifically:

[0072] For details of matching molds, please see Fig.14 , Fig.15 , Fig.16 As shown, the top 7-1 of the third mold barrel is a hollow cube, which is connected to the barrel body 7-2 of the third mold. After the top 7-1 and the barrel body 7-2 of the third mold are filled with concrete, the various components of the mold are removed, and the formed concrete support is as shown in FIG. Fig.17 , 18 As shown, after being installed in the cast-in-place slab 2, the positional relationship between the formed No. 3 concrete support 7 and the upper slab reinforcement 2-2 and the lower slab reinforcement 2-1 is shown in FIG. Fig.19 As shown, other construction methods are similar to those of Example 1 and Example 2.

[0073] Example 4 (Walls and slabs with reinforced concrete members with haunches)

[0074] See also Fig. 20 , which is different from Example 1, Example 2, and Example 3, in order to increase the shear resistance of the retaining wall 2-3 and the cast-in-place slab 2, the designer usually adds a gusset member 9 at the inner corner formed by the two. This member is required to be cast at the same time as the cast-in-place slab 2, the retaining wall 2-3, and the upper structure slab 4-3. In order to smoothly install the support system at the gusset, the relevant components are changed, specifically:

[0075] The arm support system is composed of formwork 2-4, support block 4-1, horizontal rod 4, top support 3-2, vertical rod 3, steel pipe tray 8-1, tray sleeve 8-2, and connecting rod 8-3. The support system composed of the above components falls on the concrete support 1 as a whole.

[0076] According to the mold assembly method described in Example 1, after the assembly is completed and the concrete is filled and vibrated to make it dense, a connecting rod 8-3 is inserted into the center of the upper surface of the concrete support 1. To ensure stability, the insertion depth is at least 5 cm. The total height of the connecting rod 8-3 is the insertion depth plus the exposed height. The exposed height can be calculated according to the design drawings or measured on site. After the concrete reaches a certain condition, the mold is removed.

[0077] After the axil reinforcement 9-1 is tied and before the axil formwork 9-2 is installed, the concrete support 1 with the connecting rod 8-3 is installed at the lower part of the axil member 9, and then the axil formwork 9-2 is installed, and a small hand drill is used to drill holes at the corresponding positions of the axil formwork 9-2 at the exposed parts of the connecting rod 8-3.

[0078] See also Fig. 20 , Fig.21 , Fig. 22The vertical pole 3 is located on the steel pipe pallet 8-1. The lower part of the steel pipe pallet 8-1 is provided with a pallet sleeve 8-2. The pallet sleeve 8-2 is a hollow cylinder, which is inserted into the connecting rod 8-3. At this point, the lower components of the upper structure plate 4-3 support system are assembled, and other accessories of the support system are installed according to the above method.

[0079] After the above-mentioned components of the lower part of the support system are assembled and formed, their positional relationship with the axillary reinforcement 9-1, the upper layer reinforcement 2-2 of the plate, and the lower layer reinforcement 2-1 of the plate is shown in Fig.23 As shown, the support construction method at the non-axillary position is selected according to the spacing distribution of the upper reinforcement 2-2 and the lower reinforcement 2-1 of the plate, and the construction method suitable for Example 1, Example 2, and Example 3 is selected.

[0080] When the concrete strength grade reaches 100% of the design strength grade, the above-mentioned supporting system components and the steel pipe tray 8-1 with the tray 8-2 are removed, and then the connecting rod 8-3 exposed and protruding from the surface of the axil component 9 is cut off using a small hand-held cutting machine.

[0081] 3.2 Workflow

[0082] Step 1, mold assembly: According to different embodiments, all mold components such as the mold (barrel body), mold (barrel ears), mold (bottom plate) are fixed by bolts.

[0083] Step 2, pouring concrete: pour concrete of the same strength grade as the cast-in-place slab 2 into the mold, vibrate the poured concrete to make it dense, and use the grooved steel pipe 1-6 to press it into the circular groove 1-1 on the upper surface of the poured concrete, and insert the connecting rod 8-3 when there is a haunch member 9.

[0084] Step 3, mold removal: After the concrete reaches a certain strength, remove the bolts and dismantle all molds to obtain the formed concrete support.

[0085] Step 4, support installation: according to the spacing and distribution of the upper ribs 2-2 and the lower ribs 2-1 of the slab or when there are haunch components, the formed supports are installed in the cast-in-place slab 2.

[0086] Step 5, support system installation: install the support system consisting of the formwork 2-4, support block 4-1, horizontal rod 4, top support 3-2, horizontal rod 3-3, vertical rod 3, and sweeping rod 3-1 under the upper structure plate 4-3 and place it on the support; when there is an axil component 9, it is necessary to use a small hand drill to drill a hole at the intersection where the connecting rod 8-3 passes through the axil template 9-2, and then install the steel pipe tray 8-1 with the tray sleeve 8-2, and finally install the other support system components described in this step.

[0087] Step 6, integral pouring: After the concealed works are accepted, the cast-in-place slab 2, retaining wall 2-3, upper structure slab 4-3, and axil member 9 (if any) are integrally poured with concrete and vibrated to make them dense.

[0088] Step 7, dismantle and recycle the support system: after the concrete strength grade reaches 100% of the design strength grade, dismantle the support system and recycle it with prefabricated concrete supports in other identical locations.

[0089] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the structural relationship and principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A concrete support structure for cast-in-place slabs and axils, characterized in that : including a concrete support and a support system fixed on the concrete support; The concrete support comprises a support body structure and a vertical rod docking structure located at the upper end of the support body; the support body structure is cast by concrete, has a rough surface and a height equal to the thickness of the cast-in-place slab (2); The support system comprises a vertical pole (3), a sweeping pole (3-1), a horizontal pole (3-3), a top support (3-2), a horizontal pole (4), a support block (4-1) and a template (2-4); there are a plurality of vertical poles (3), the lower end of each vertical pole (3) is inserted into the vertical pole docking structure of the concrete support, the bottom of each vertical pole (3) is fixedly connected to the sweeping pole (3-1), a T-shaped top support (3-2) is arranged on the upper part of each vertical pole (3), the T-shaped top support (3-2) is connected to the horizontal pole (4) and plays a role in lifting the horizontal pole (4); a plurality of support blocks (4-1) are arranged on the upper end surface of the horizontal pole (4), and the template (2-4) is arranged on the upper ends of the plurality of support blocks (4-1).

2. The concrete support structure according to claim 1, characterized in that: The support body structure is generally cylindrical, truncated cone or rectangular.

3. The concrete support structure according to claim 1, characterized in that: The vertical pole docking structure is a tubular circular groove (1-1) arranged on the upper end surface of the support body structure and recessed downwards, and the tubular circular groove (1-1) is embedded in the lower part of the vertical pole (3).

4. The concrete support structure according to claim 1, characterized in that: It also includes a leg structure located at the lower end of the support body, wherein the leg structure is a plurality of No. 2 support legs (6-7) arranged evenly in the circumferential direction on the lower end surface of the support body structure, and gaps are formed between the plurality of No. 2 support legs (6-7) for steel bars to pass through; the upright pole docking structure is a tubular circular groove (1-1) arranged on the upper end surface of the support body structure and recessed downward, and the tubular circular groove (1-1) is embedded with the lower part of the upright pole (3).

5. The concrete support structure according to claim 1, characterized in that: It also includes a leg structure located at the lower end of the support body, wherein the leg structure is a plurality of No. 3 support legs (7-9) arranged evenly in the circumferential direction on the lower end surface of the support body structure, and gaps are formed between the plurality of No. 3 support legs (7-9) for steel bars to pass through; and the upright bar docking structure is a hollow cube or a cuboid arranged on the upper end surface of the support body structure and protruding upward.

6. The concrete support structure according to claim 1, characterized in that: It also includes an axil support system arranged at the inner corner; The armpit support system is composed of a formwork (2-4), a support block (4-1), a horizontal rod (4), a top support (3-2), a vertical rod (3), a steel pipe tray (8-1), a tray sleeve (8-2), and a connecting rod (8-3). The support system composed of the above components falls on the first concrete support (1) as a whole. A connecting rod (8-3) is inserted into the center of the upper surface of the No. 1 concrete support (1), the insertion depth being at least 5 cm, the total height of the connecting rod (8-3) being the insertion depth plus the exposed height, and before the axillary reinforcement (9-1) is tied and the axillary formwork (9-2) is installed, the concrete support (1) with the connecting rod (8-3) is installed at the lower part of the axillary member (9), and then the axillary formwork (9-2) is installed, and holes are opened at the exposed part of the connecting rod (8-3) and at the corresponding position of the axillary formwork (9-2); the vertical pole (3) is seated on the steel pipe tray (8-1), and the lower part of the steel pipe tray (8-1) is provided with a tray sleeve (8-2), and the tray sleeve (8-2) is a hollow cylinder and is inserted into the connecting rod (8-3).

7. The matching mold for the concrete support structure according to claim 3 is characterized in that: The invention comprises a No. 1 mold barrel body (1-2) with a hollow shell structure and open at both upper and lower ends, a circle of No. 1 mold barrel ears (1-3) located at the lower edge of the No. 1 mold barrel body (1-2) and protruding outward, and a No. 1 mold bottom plate (1-4) detachably connected to the No. 1 mold barrel ears, wherein the No. 1 mold bottom plate (1-4) can cover and seal the lower open end of the No. 1 mold barrel body (1-2).

8. The matching mold for the concrete support structure according to claim 4, characterized in that: The invention comprises a No. 2 mold barrel body (6-1) with a hollow shell structure and open at both ends, a circle of No. 2 mold barrel ears (6-2) located at the lower edge of the No. 2 mold barrel body and protruding outward, and a No. 2 mold bottom plate (6-5) detachably connected to the No. 2 mold barrel ears (6-2), wherein the No. 2 mold bottom plate (6-5) can cover and seal the lower open opening of the No. 2 mold barrel body; the lower part of the No. 2 mold bottom plate (6-5) is provided with a plurality of No. 2 mold legs (6-6) with a hollow shell structure and open at the upper end; in order to allow the lower layer reinforcement (2-1) of the plate to pass smoothly, the No. 2 mold legs (6-6) are symmetrically arranged along the periphery of the No. 2 mold bottom plate (6-5), and gaps are formed between the legs, and the gaps can meet the requirements of the reinforcement passing through; the No. 2 mold bottom plate (6-5) is provided with a plurality of holes, the shape of the holes matches the shape of the upper openings of the No. 2 mold legs (6-6), and the upper ends of the No. 2 mold legs (6-6) can be embedded.

9. The matching mold for the concrete support structure according to claim 5, characterized in that: The invention comprises a No. 3 mold barrel body (7-2) with a hollow shell structure and an open lower end, a No. 3 mold barrel ear (7-3) located at the lower edge of the mold barrel body and protruding outward, and a No. 3 mold bottom plate (7-5) detachably connected to the No. 3 mold barrel ear, wherein the No. 3 mold bottom plate (7-5) can cover and seal the lower open end of the No. 3 mold barrel body (7-2); the lower part of the No. 3 mold bottom plate (7-5) is provided with a plurality of No. 3 mold legs (7-7) with a hollow shell structure and an open upper end, so as to make the lower layer of the plate ribs (2-1) passes smoothly, the No. 3 mold legs (7-7) are symmetrically arranged along the periphery of the No. 2 mold bottom plate (6-5), and gaps are formed between the legs, which can accommodate the passage of steel bars; a plurality of holes are opened on the No. 3 mold bottom plate (7-5), and the shape of the holes matches the shape of the upper opening of the No. 3 mold legs (7-7) and can embed the upper end of the No. 3 mold legs (7-7); the top surface of the No. 3 mold barrel (7-2) protrudes upward to form a hollow square vertical rod docking structure with an open upper end.

10. A construction method of a concrete bearing support structure, characterized in that: The steps include: Step 1, mold assembly: fix all mold components including mold barrel body, mold barrel ears, mold bottom plate, etc. by bolting; Step 2, pouring concrete: pouring concrete of the same strength grade as the cast-in-place slab (2) into the mold, vibrating the poured concrete to make it dense, and using a grooved steel pipe (1-6) to press the upper surface of the poured concrete into the circular groove (1-1), and inserting the connecting rod (8-3) when there is a haunch member (9); Step 3, mold removal: After the concrete reaches a certain strength, remove the bolts and dismantle all molds to obtain the formed concrete support; Step 4, support installation: according to the spacing and distribution of the upper ribs (2-2) and the lower ribs (2-1) of the slab, or when there are haunch components, the formed support is installed in the cast-in-place slab (2); Step 5, support system installation: install the support system consisting of the template (2-4), support block (4-1), horizontal rod (4), top support (3-2), horizontal rod (3-3), vertical rod (3), and sweeping rod (3-1) below the upper structure plate (4-3) and place it on the support; when there is an axil component (9), it is necessary to use a small hand drill to drill a hole at the intersection where the connecting rod (8-3) passes through the axil template (9-2), and then install the steel pipe tray (8-1) with the tray sleeve (8-2), and finally install the other support system components described in this step; Step 6, integral pouring: after the concealed works are accepted, the cast-in-place slab (2), retaining wall (2-3), upper structure slab (4-3), and axil member (9) are integrally poured with concrete and vibrated to make them dense; Step 7, dismantle and recycle the support system: after the concrete strength grade reaches 100% of the design strength grade, dismantle the support system and recycle it with prefabricated concrete supports in other identical locations.

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