Well type floor pouring formwork and construction method

Abstract

The application relates to a template technical field and provides a well type floor pouring template and a construction method, the pouring template comprises a platform plate and at least four prefabricated square box bodies; the square box bodies are distributed on the platform plate in a rectangular array form, a well-shaped pouring channel of a well beam is formed, the square box body comprises a square outer frame, an inner support framework and a top plate; the square outer frame comprises a plurality of vertical side plates which are sequentially connected in a head-to-tail mode to form the square outer frame; the inner support framework is supported in the interior of the square outer frame; and the top plate is arranged on the top of the square outer frame. The prefabricated square box bodies are arrayed on the platform plate, the well-shaped pouring channel formed between the square box bodies is used to pour the well beam, template cutting and splicing operations are not needed, the on-site construction workload is reduced, the construction efficiency is obviously improved, and the construction period is shortened. The square box body is not prone to deformation, and the forming quality is ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of templates, and particularly relates to a well-type floor slab pouring template and a construction method. BACKGROUND

[0002] The well-type floor slab is a structure form evolved from the reinforced concrete two-way slab. The main difference between the well-type floor slab and the cast-in-place one-way slab ribbed floor slab is that the cross-sectional heights of the beams in two directions are usually equal, and the beams do not have primary and secondary beams, and jointly bear the loads transmitted by the floor slab. The main difference between the well-type floor slab and the cast-in-place two-way slab ribbed floor slab is that no column is arranged at the intersection of the beams, and the spacing of the beams is generally 1.5m to 3m. At present, large factory buildings usually adopt the well-type floor slab. The construction period of the factory building is relatively tight, the well-type floor slab is dense, and the traditional well-type floor slab pouring construction is performed by using the wood template to perform on-site one-by-one formwork. Although the wood template is convenient to obtain, the installation and disassembly are difficult, the workload is large, the construction efficiency is low, and the wood template cannot meet the construction period requirement. In addition, the on-site cutting and splicing of the wood template have low precision, and the construction quality of the beams is poor. SUMMARY

[0003] In view of the problems in the prior art, the well-type floor slab pouring template and the construction method are provided to overcome the problems of low construction efficiency and poor forming quality of the existing well-type floor slab pouring construction mold which adopts the wood template to perform on-site one-by-one formwork.

[0004] The well-type floor slab pouring template provided by the application comprises a platform plate and at least four prefabricated square box bodies. The square box bodies are distributed on the platform plate in the form of an n-row-m-column array to form a well-shaped pouring channel of the well-type floor slab. n and m are both integers greater than or equal to 2. The square box body comprises a square outer frame, an inner support framework and a top plate. The square outer frame comprises a plurality of vertical side plates which are sequentially and circularly connected to form the square outer frame. The inner support framework is supported inside the square outer frame. The top plate is arranged on the top of the square outer frame and closes the top opening of the square outer frame.

[0005] Further, the inner support framework comprises a plurality of vertical first support frames which are arranged at intervals along the length direction of the square outer frame, and the two ends of each first support frame are supported on the two inner sides in the width direction of the square outer frame. The inner support framework further comprises a plurality of vertical second support frames which are supported between the first support frame and the square outer frame or between two first support frames.

[0006] Further, the square box body further comprises a plurality of first positioning assemblies which are distributed inside the square outer frame and are used for positioning cooperation with the two ends of the first support frame, and a plurality of second positioning assemblies which are distributed on the two sides of the first support frame and are used for positioning cooperation with the two ends of the second support frame.

[0007] Through the positioning effect of the first positioning assembly and the second positioning assembly, the assembly speed of the inner support framework is improved, the assembly quality is improved, and the inner support framework is reinforced.

[0008] Further, the square outer frame further comprises a reinforcing member arranged on the inner side of the side plate.

[0009] Further, the end of at least one side plate is provided with a right-angle flange part, which is overlapped or spliced with the end of the adjacent side plate.

[0010] Through the effect of the right-angle flange part, the forming quality of the cross beam at the corner part is ensured, and the concrete is prevented from entering the inside of the square outer frame during pouring.

[0011] Further, at least one edge of the square outer frame of at least one square box body is provided with a corner missing structure.

[0012] Further, the platform plate is provided with positioning marks for identifying the arrangement position of the square box body.

[0013] In a second aspect, the application further provides a method for constructing the well-type floor slab by using the well-type floor slab pouring formwork, which comprises the following steps:

[0014] According to the plan view of the well-type floor slab to be constructed, the number and size of the square box body of the well-type floor slab pouring formwork are determined, and the square box body is prefabricated; the platform plate of the well-type floor slab pouring formwork is arranged below the well-type floor slab to be constructed through a table mold or a gantry, and the platform plate is adjusted to the target height; the prefabricated square box body is hoisted above the platform plate, the positions of the square box bodies are adjusted, the square box bodies are distributed at intervals in the form of n rows and m columns on the platform plate to form the well-shaped pouring channel of the cross beam, and the square box body and the platform plate are fixed; the beam bar is arranged in the pouring channel; the concrete is poured into the pouring channel, and after the concrete reaches the design strength, the platform plate, the inner support framework of the square box body, the square outer frame of the square box body and the top plate of the square box body are removed in sequence from bottom to top.

[0015] Further, the method further comprises the following steps: according to the plan view of the well-type floor slab to be constructed, the positioning marks for identifying the arrangement position of the square box body are arranged on the platform plate; and according to the positioning marks on the platform plate, the square box body is placed so that the pre-set model marks on the square box body correspond to the positioning marks on the platform plate one by one.

[0016] Further, the pre-set model marks on the square box body comprise first model marks and second model marks; the square box body, of which the edges of the square outer frame are provided with the corner missing structure, is provided with the first model marks; and the square box body, of which the edges of the square outer frame are not provided with the corner missing structure, is provided with the second model marks.

[0017] The beneficial effects of this invention are as follows: By arraying prefabricated square boxes on a platform, and utilizing the grid-shaped pouring channels formed between the spaced square boxes to cast a grid beam, compared to the traditional method of erecting formwork on-site one by one with wooden templates, there is no need for template cutting and splicing, reducing on-site construction workload, significantly improving construction efficiency, and shortening the construction period. Furthermore, the prefabrication of the square boxes offers higher precision than on-site formwork erection. The square outer frame of the square box is equipped with an internal support skeleton, ensuring the strength of the square box, preventing deformation, and guaranteeing the quality of the finished product. In addition, the square boxes are easy to assemble and disassemble and can be reused, reducing construction costs. The beam height of the grid beam depends on the height of the square boxes; therefore, by limiting the height of the square boxes, the beam height of the grid beam can be limited. Compared to the traditional method of using wooden templates to enclose the pouring cavity and determining the beam height by measuring the concrete pouring depth, this simplifies the construction process and further improves construction efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a square box-shaped formwork for the well-type floor slab casting template of the present invention.

[0019] Figure 2 for Figure 1 A top-view structural diagram.

[0020] Figure 3 for Figure 1 A three-dimensional structural diagram of the first support frame of the internal support skeleton of the Chinese box body.

[0021] Figure 4 for Figure 1 A three-dimensional structural diagram of a second support frame of the internal support skeleton of the Chinese box body.

[0022] Figure 5 for Figure 1 A three-dimensional structural diagram of the inner side panel of the Chinese-style enclosure.

[0023] Figure 6 for Figure 5 A three-dimensional structural diagram of the side panel from the outside view.

[0024] Figure 7 for Figure 1 A three-dimensional structural diagram of the inner side panel of the other side panel of the Chinese-style enclosure.

[0025] Figure 8 for Figure 7 A three-dimensional structural diagram of the middle side panel from the outside view.

[0026] Figure 9 for Figure 1Enlarged view of the right-angle flange of one side plate spliced with the top end of another side plate.

[0027] Figure 10 Structure diagram of another embodiment of the square box of the present application.

[0028] Figure 11 For Figure 1 Schematic diagram of the top of the square box installing the top plate.

[0029] Figure 12 Structure diagram of the square box of the well-type floor slab pouring formwork of the present application provided with a notched structure.

[0030] Figure 13 For Figure 12 Schematic diagram of the notched structure from the inside perspective.

[0031] Figure 14 For Figure 12 Schematic diagram of the notched structure from the outside perspective.

[0032] Figure 15 Partial top view structure diagram of the platform plate of the well-type floor slab pouring formwork of the present application provided with multiple square boxes forming a well-shaped pouring channel.

[0033] Figure 16 Plan view of the square box required for the 2-layer 07 area of the well-type floor slab to be constructed by the construction method of the present application using CAD.

[0034] In the figure:

[0035] 1 - top plate;

[0036] 2 - first support frame; 21 - second positioning assembly;

[0037] 3 - second support frame;

[0038] 4 - first side formwork; 41 - right-angle flange; 42 - first reinforcing frame; 43 - reinforcing batten; 44 - first positioning assembly;

[0039] 5 - second side formwork; 51 - second reinforcing frame; 52 - third positioning assembly;

[0040] 6 - notched structure; 61 - support framework; 62 - first vertical plate; 63 - second vertical plate;

[0041] 7 - platform plate;

[0042] 8 - pouring channel;

[0043] 9 - square box. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] like Figure 1 , 15 The well-type floor slab casting template shown includes a platform slab 7 and multiple prefabricated square boxes 9, with a number of square boxes 9 greater than 4. The multiple square boxes 9 are distributed on the platform slab 7 in an array of n rows and m columns, forming a well-shaped casting channel 8 for the well beam, where n and m are both integers greater than or equal to 2.

[0046] like Figure 1 As shown, each box 9 includes a square outer frame, an inner support frame, and a top plate 1; the square outer frame includes multiple vertical side plates, which are connected end to end to form a square outer frame; the inner support frame supports the interior of the square outer frame; the top plate 1 is laid on the top of the square outer frame and closes the top opening of the square outer frame.

[0047] Each box 9 has four sides. The side panels of the square outer frame are not limited to only four. Taking one side as an example, it can be formed by splicing multiple panels to form one side panel of the square outer frame.

[0048] like Figure 11 As shown, the top plate 1 does not necessarily have to be a single piece of board; it can also be formed by splicing together multiple boards.

[0049] In this embodiment, the board material of the square box 9 is preferably wood, but it is not excluded that other materials, such as aluminum templates, can be used.

[0050] like Figure 1 , 2 The internal support frame shown includes four vertical first support frames 2 and fifteen vertical second support frames 3.

[0051] like Figure 2 As shown, four vertical first support frames 2 are spaced apart along the length of the square outer frame, with each first support frame 2 supported at both ends by the two inner sides of the square outer frame in the width direction. Fifteen vertical second support frames 3 are supported between the first support frames 2 and the square outer frame, or between two first support frames 2. The second support frames 3 are perpendicular to the first support frames 2. The four first support frames 2, with their spacing, form three rectangular spaces. The two outermost first support frames 2 form two rectangular spaces with each end of the square outer frame in the length direction, thus forming a total of five rectangular spaces. The 15 vertical second support frames 3 are divided into five groups, each group consisting of three second support frames 3 spaced apart along the length direction of the first support frames 2. The five groups of second support frames 3 are respectively positioned within the five rectangular spaces.

[0052] Of course, the square box 9 of the present application is not limited to the above-mentioned number of the first support frame 2 and the second support frame 3. The first support frame 2 can be provided with only one, and the second support frame 3 can be provided with two, which are distributed on both sides of the first support frame 2.

[0053] As shown in Figure 1 , 2 , the square box 9 further comprises a plurality of first positioning assemblies 44 and a plurality of second positioning assemblies 21.

[0054] The plurality of first positioning assemblies 44 are distributed inside the square outer frame and are used for positioning cooperation with both ends of the first support frame 2.

[0055] The plurality of second positioning assemblies 21 are distributed on both sides of the first support frame 2 and are used for positioning cooperation with both ends of the second support frame 3.

[0056] The square box 9 of the present embodiment further comprises a plurality of third positioning assemblies 52, which are distributed inside the square outer frame and are used for positioning cooperation with one end of a part of the second support frame 3.

[0057] The first positioning assembly 44, the second positioning assembly 21 and the third positioning assembly 52 can have the same structure, each comprising a plurality of clamping pieces, each clamping piece comprising two clamping blocks and a limiting channel between the two clamping blocks. Taking the first positioning assembly 44 as an example, the first support frame 2 is vertically arranged, and the end thereof is vertically inserted into the limiting channel between the two clamping blocks of the first positioning assembly 44, so that the first support frame 2 can only vertically displace, and the clamping blocks limit the transverse displacement of the first support frame 2.

[0058] As shown in Figure 3 , the first support frame 2 comprises two long rods which are horizontal and vertically spaced apart, and the first support frame 2 further comprises five short rods connected between the two long rods. On both sides of each long rod, three first positioning assemblies 44 are arranged along the length direction thereof at intervals, and each first positioning assembly 44 comprises two clamping blocks and a vertical limiting channel between the two clamping blocks. The two limiting channels in the same vertical direction of the two long rods are vertically aligned.

[0059] As shown in Figure 4 , the second support frame 3 comprises a rectangular frame structure formed by connecting four short rods end to end.

[0060] It should be noted that the long rods and the short rods of the present embodiment are preferably wooden bars. Of course, they can also be rods or tubes made of other materials.

[0061] The side plates of the square outer frame of the present embodiment have two structural forms. Specifically, the side plates of the square outer frame comprise two first side mold plates 4 and two second side mold plates 5. The first side mold plate 4 is as shown in Figure 5 , 6As shown, the second side template 5 is as follows Figure 7 , 8 As shown.

[0062] In this embodiment, the length of the first side template 4 is longer than the length of the second side template 5, meaning that the length direction of the first side template 4 is the same as the length direction of the square outer frame. The surface of the first side template 4 is parallel to the vertical surface of the second support frame 3, and the surface of the second side template 5 is parallel to the vertical surface of the first support frame 2.

[0063] like Figure 2 As shown, the first positioning component 44 is disposed on the inner side of the first side template 4. The second positioning component 21 is disposed on both sides of the first support frame 2, and the third positioning component 52 is disposed on the inner side of the second side template 5. The positions of the third positioning component 52 and the second positioning component 21 are both located on the vertical surface of the second support frame 3.

[0064] like Figure 5 , 6 The first side template 4 shown has right-angle flanges 41 at both ends, which overlap or splice with the ends of adjacent side panels. In this embodiment, the right-angle flanges 41 at both ends of the two first side templates 4 are spliced ​​with the ends of the two second side templates 5 respectively.

[0065] like Figure 5 , 6 As shown, a first reinforcing frame 42 is also provided on the inner side of the first side template 4. The first reinforcing frame 42 includes two parallel long rods and six short rods connected between the two long rods. The long rods and short rods are all fixedly connected to the inner side panel of the first side template 4. The connection method can be steel nail connection. The first positioning component 44 is fixedly installed on the long rods of the first reinforcing frame 42.

[0066] like Figures 5-8 As shown, the square outer frame also includes reinforcing members disposed on the inner side of the side panels.

[0067] The reinforcing component includes a reinforcing timber 43, which is fixedly connected to the long rod of the first reinforcing frame 42 on the inner side of the first side template 4 by nails.

[0068] like Figure 7 , 8 As shown, a second reinforcing frame 51 is provided on the inner side of the second side template 5. The second reinforcing frame 51 includes two parallel long rods and five short rods connected between the two long rods. The third positioning component 52 is fixedly connected to the long rods of the second reinforcing frame 51 of the second side template 5.

[0069] like Figure 9As shown, the length of the straight edge of the first side template 4 is greater than the thickness of the long rod of the first reinforcing frame 42 on the inner side of the first side template 4, so that the straight edge of the first side template 4 can abut against the end of the second side template 5, and the straight edge of the first side template 4 extends out of the first reinforcing frame 42. The reinforcing timber 43 provided on the first reinforcing frame 42 on the inner side of the first side template 4 clamps the second reinforcing frame 51 on the inner side of the second side template 5 with the straight edge of the first side template 4 extending out of the first reinforcing frame 42. In this way, the stability of the square box 9 is ensured.

[0070] As shown in the drawings, Figure 10 The size of the square box 9 can be reduced in proportion as a whole, or the number and position of the first support frame 2 and the second support frame 3 of the inner support skeleton can be changed without changing the size of the square outer frame of the square box 9. In this way, it is suitable for the construction needs of different well-type floor slabs.

[0071] As shown in the drawings, Figure 12 According to the construction needs, one edge of the square outer frame of the square box 9 is provided with a corner missing structure 6, of course, the corner missing structure 6 can also be provided on different edges of the square outer frame of the square box 9 respectively.

[0072] As shown in the drawings, Figure 13 , 14 The corner missing structure 6 includes an L-shaped right-angle plate vertically provided and a support skeleton 61 provided on the inner side of the L-shaped right-angle plate. The L-shaped right-angle plate includes a first vertical plate 62 and a second vertical plate 63 perpendicular to each other. The inner side of the first vertical plate 62 and the inner side of the second vertical plate 63 are respectively provided with the support skeleton 61, and the support skeleton 61 includes a vertical rod and horizontal rods provided at both ends of the vertical rod.

[0073] The square outer frame of the square box 9 includes two first side templates 4 and two second side templates 5. The surface of the first vertical plate 62 of the L-shaped right-angle plate is parallel to the surface of the first side template 4, and the surface of the second vertical plate 63 of the L-shaped right-angle plate is parallel to the surface of the second side template 5. Among them, one end of the first vertical plate 62 facing away from the second vertical plate 63 is connected with the end of one of the second side templates 5, and one end of the second vertical plate 63 facing away from the first vertical plate 62 is connected with the end of one of the first side templates 4.

[0074] In order to improve the construction efficiency and ensure the accurate placement of the square box 9 on the platform plate 7, the platform plate 7 is provided with a positioning mark for identifying the arrangement position of the square box 9. The positioning mark can be a combination of letters and numbers. The positioning mark can contain coordinate information and number information of the square box 9. The construction personnel can quickly obtain the coordinate information and number information corresponding to the positioning mark according to the positioning mark, so as to find the corresponding square box 9 according to the number preset on the square box 9, and hoist the square box 9 to the position on the platform plate 7 corresponding to the coordinate information.

[0075] Of course, the box body 9 is not necessarily provided with physical number information, and the construction personnel can classify the box body 9 according to whether the box body 9 is provided with the corner missing structure 6. For example, the box body 9 without the corner missing structure 6 is classified as A, and the box body 9 with the corner missing structure 6 is classified as B.

[0076] Based on the same inventive concept, the application also provides a method for constructing a well-type floor using the well-type floor pouring formwork, comprising the following steps:

[0077] According to the plan view of the well-type floor to be constructed, the number and size of the box body 9 of the well-type floor pouring formwork are determined, and the box body 9 is prefabricated; according to the plan view of the well-type floor to be constructed, the positioning marks for identifying the arrangement positions of the box body 9 are arranged on the platform plate 7. According to the positioning marks on the platform plate 7, the box body 9 is placed so that the pre-set model marks on the box body 9 correspond to the positioning marks on the platform plate 7 one by one. The pre-set model marks on the box body 9 include first model marks and second model marks; the box body 9 with the corner missing structure 6 arranged on the edge of the square outer frame is provided with the first model mark, for example, mark B; the box body 9 without the corner missing structure 6 arranged on the edge of the square outer frame is provided with the second model mark, for example, mark A.

[0078] The platform plate 7 of the well-type floor pouring formwork is arranged below the well-type floor to be constructed through a table form or a portal frame, and the platform plate 7 is adjusted to a target height;

[0079] The prefabricated box body 9 is hoisted above the platform plate 7, the positions of the box body 9 are adjusted, the box body 9 is distributed on the platform plate 7 in the form of an n-row-m-column array, the well-shaped pouring channel 8 of the well beam is formed, and the box body 9 is fixed with the platform plate 7;

[0080] The beam reinforcement is arranged in the pouring channel 8;

[0081] The concrete is poured into the pouring channel 8, and after the concrete reaches the design strength, the platform plate 7, the inner support framework of the box body 9, the square outer frame of the box body 9 and the top plate 1 of the box body 9 are sequentially removed from bottom to top.

[0082] The method of the application takes an electronic factory project as an example. The J1 building of the project has a total of 4.7 million square meters of well-type floor to be poured, including the 2nd floor and the 3rd floor. The well-type floor of the electronic factory is constructed by using the method of the application, comprising the following steps:

[0083] 1. Plan layout and list

[0084] The length* width* height of the box body 9 is represented by L*W*H, and the length* width of the corner missing structure is represented by X*Y. The number of different size box bodies 9 in each area of each floor of the electronic factory is counted.

[0085] Based on the original structure CAD drawings of the electronic factory, the planar layer of the required square box 9 is derived. Through programming, a CAD secondary programming plug-in is established. Through the programming language, different square box 9 sizes and missing angle sizes are directly identified, and the total plan of each layer is derived. The position of each square box 9 in the plan corresponds to a square, and the center of the square is marked with the model of the square box 9 and the model of the missing angle, as shown in Figure 16 According to the field partition, the technical personnel mark the axis number, and split it into construction drawings. At the same time, through the CAD secondary programming language, the EXCEL list of each floor and each area is derived.

[0086] Square box model and quantity statistical sample

[0087]

[0088]

[0089] 2. Square box 9 deepening drawing and structure calculation

[0090] Determine the model and size of the square box 9, complete the drawing labeling and deepening drawing design.

[0091] Calculate the bearing capacity of the square box 9, and complete the calculation report.

[0092] 3. Determine the construction process

[0093] Square box 9 production and processing→platform plate 7 laying→square box 9 placement position line positioning→square box 9 unpacking, ground assembly and hoisting→square box 9 reinforcement and top plate 1 installation→concrete pouring and square box 9 removal.

[0094] 4. Square box 9 processing and storage

[0095] The processing plant processes uniformly based on the processing drawings and model statistical list, packs according to the model, and is responsible for transportation to the designated storage yard.

[0096] The square box 9 is packed and wrapped with plastic film to ensure that it will not be damp. After being transported to the site, the square box 9 should be placed in a position that will not be affected by rain and damp. According to the construction plan, the corresponding numbered square box 9 is transported to the correct position for installation.

[0097] 5. Line positioning

[0098] Build a platform or heavy-duty gantry, lay the platform plate 7 according to the elevation requirement, and complete the positioning measurement. The square box 9 position is line positioned. The technical department issues the model labeling drawing to the construction department, which facilitates the construction department to install the square box 9 according to the drawing.

[0099] 6. Assembly and hoisting of square box 9

[0100] The site foreman makes a sample and site briefing for the workers. The corresponding square box 9 is unpacked, the square outer frame and the inner support frame of the square box 9 are installed on the ground, the square box 9 is repacked with packing tape, and is shipped to a prefabricated hoisting cage. Multiple square boxes 9 are hoisted at a time to improve hoisting efficiency and reduce the occupation of the tower crane.

[0101] The square box 9 production and processing manufacturer is invited to make a detailed technical briefing on the square box 9 assembly method to ensure that the on-site assembly work is fast and smooth. The square box 9 hoisted to the platform plate 7 is carried to the corresponding position of the platform plate 7 according to the corresponding model marked by the positioning mark on the platform plate 7. The bottom of the square box 9 is fixed to the platform plate 7 using an air nail gun. The bottom of the square box 9 fixed to the platform plate 7 includes the bottom of the inner support frame and the bottom of the square outer frame. A nail is punched every 15 centimeters.

[0102] After reinforcement, the installation and fixation of the top plate 1 of the square box 9 are performed.

[0103] 7. Steel bar arrangement

[0104] After the installation of each square box 9 is completed, the square-shaped pouring channel 8 of the cross beam is formed between the square boxes 9, and the beam bar is arranged in the pouring channel 8.

[0105] 8. Concrete pouring and square box 9 removal

[0106] Concrete is poured into the pouring channel 8, and after the concrete reaches the design strength, the platform plate 7, the inner support frame of the square box 9, the square outer frame of the square box 9, and the top plate 1 of the square box 9 are removed in turn from bottom to top. Of course, before pouring the concrete, a side wall formwork can be arranged around the outermost square box 9 to surround and enclose the pouring channel 8 formed by the square box 9.

[0107] The above is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the scope of the present application is within the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and refinements without departing from the principles of the present application are also considered to be within the protection scope of the present application.

Claims

1. A well-type floor formwork, characterized by, The platform plate and the prefabricated at least four square boxes; a plurality of square boxes are distributed in an array of n rows and m columns on the platform plate, forming a cross-shaped pouring channel of a cross-shaped beam, wherein n and m are both integers greater than or equal to 2; the square box comprises a square outer frame, an inner support framework and a top plate; the square outer frame comprises a plurality of vertical side plates, which are sequentially connected end to end to form the square outer frame; the inner support framework is supported inside the square outer frame; the top plate is laid on the top of the square outer frame and closes the top opening of the square outer frame; The inner support framework comprises: a plurality of vertical first support frames are arranged in the length direction of the square outer frame, and the two ends of each first support frame are supported on the two inner sides in the width direction of the square outer frame; and a plurality of vertical second support frames are supported between the first support frame and the square outer frame or between two first support frames; The square box further comprises: a plurality of first positioning assemblies distributed inside the square outer frame for positioning cooperation with the two ends of the first support frame; and a plurality of second positioning assemblies distributed on the two sides of the first support frame for positioning cooperation with the two ends of the second support frame; The end of at least one side plate is provided with a right-angled flange, which is overlapped or spliced with the end of the adjacent side plate.

2. The mat foundation form according to claim 1, wherein The square outer frame further comprises a reinforcing member arranged on the inner side of the side plate.

3. The mat foundation pouring form according to claim 1, wherein At least one edge of the square outer frame of at least one square box is provided with a corner missing structure.

4. The mat foundation pouring form according to claim 1, wherein Positioning marks for identifying the arrangement position of the square box are arranged on the platform plate.

5. A method of constructing a waffle slab using the waffle slab casting form according to any one of claims 1 to 4, characterized by, The steps include: According to the plan view of the proposed construction of the well-type floor, the number and size of the square box of the well-type floor pouring formwork are determined, and the square box is prefabricated; The platform plate of the well-type floor pouring formwork is arranged below the proposed construction of the well-type floor by the bed die or gantry, and the platform plate is adjusted to the target height; The prefabricated square box is hoisted above the platform plate, the position of each square box is adjusted, the square box is distributed in an array of n rows and m columns on the platform plate, a cross-shaped pouring channel of a cross-shaped beam is formed, and the square box and the platform plate are fixed; The beam is arranged in the pouring channel; The concrete is poured into the pouring channel, and after the concrete reaches the design strength, the platform plate, the inner support framework of the square box, the square outer frame of the square box and the top plate of the square box are sequentially removed from bottom to top.

6. The method of constructing a wellyour floor according to claim 5, wherein Further comprising the following steps: According to the plan view of the proposed construction of the well-type floor, the positioning marks for identifying the arrangement position of the square box are arranged on the platform plate; According to the positioning marks on the platform plate, the square box is placed, and the pre-set model marks on the square box correspond to the positioning marks on the platform plate one by one.

7. The method of constructing a well-cellar floor according to claim 6, wherein The pre-set model marks on the square box include first model marks and second model marks; the square box with the corner missing structure arranged on the edge of the square outer frame is provided with the first model mark; the square box without the corner missing structure arranged on the edge of the square outer frame is provided with the second model mark.

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