Multilayer coaxial continuous formwork erecting device and formwork erecting method

Abstract

The invention discloses a multi-layer coaxial continuous formwork erecting device and method. The multi-layer coaxial continuous formwork erecting device comprises a bracket replacing frame, a disc and a bottom supporting assembly. Fixing holes used for being fixedly connected with the side supporting rods are annularly formed in the edge of the disc at intervals, and a positioning rod is arranged at the bottom of the center of the disc; the bottom supporting assembly comprises a top support and a supporting pipe, and an extending screw is arranged at the bottom of the top support. A positioning rod, a connecting round pipe, a central cylinder, an extending screw rod and the center of a supporting pipe are coaxially arranged, the connecting round pipe can be sleeved with a supporting rod on the upper layer of the layer of support, the load above the round pipe can be accurately transmitted to a supporting steel pipe below the round pipe, safe and effective continuous multi-layer coaxial support is formed, and pouring is conducted at the same time; during dismantling, the bracket is reserved in a concrete floor, the supporting steel pipe, the bottom disc, the primary keel and the secondary keel are dismantled, wood formwork supporting materials are directly dismantled, long steel bar heads, steel bar ends and other dangerous parts cannot be reserved, and safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the construction technical field, in particular to a multi-layer coaxial continuous formwork device and formwork method. BACKGROUND

[0002] In continuous formwork construction, there is a problem of changing support support through the floor support section. The existing simple continuous formwork structure such as "airplane support" and aerated block has the following problems:

[0003] 1. Low strength, poor stability, and unable to accurately form continuous support with the lower support.

[0004] 2. After removal, there will be long steel head, steel end and other dangerous parts, which is easy to cause injury to passing personnel and has safety hazards.

[0005] 3. Cannot realize multi-layer continuous formwork and pouring at the same time, affecting construction efficiency.

[0006] The existence of these problems is mainly because the simple support structure design is unreasonable, which cannot effectively transfer the load and lacks safety consideration. At the same time, due to the inability to realize multi-layer continuous formwork, the construction efficiency is low, the material utilization rate is not high, and waste may be caused. SUMMARY

[0007] The present application aims to provide a multi-layer coaxial continuous formwork device and formwork method to solve one or more technical problems in the prior art and at least provide a beneficial choice or create conditions.

[0008] The technical solution adopted to solve the above technical problems is:

[0009] The present application provides a multi-layer coaxial continuous formwork device, which comprises a support changing frame, a disc and a bottom support assembly. The support changing frame comprises a center cylinder, at least three side support rods and a connecting pipe. The center cylinder is provided with a connecting plate at the top. The connecting pipe is arranged on the top of the connecting plate. At least three connecting rods are uniformly arranged at the bottom of the center cylinder in the circumferential direction. The connecting rods are arranged along the radial direction of the center cylinder. The two ends of the side support rods are connected with the connecting plate and the connecting rod respectively. The disc is provided with fixed holes for connecting and fixing the side support rods at the edge in a ring shape. The center bottom of the disc is provided with a positioning rod. The bottom support assembly comprises a top support and a support pipe. The top support is provided with an extension screw at the bottom. The top end of the extension screw is provided with a positioning groove for inserting the positioning rod. The extension screw is threadedly connected with an adjustable knob. The support pipe is connected with the connecting pipe or the extension screw. The connecting pipe, the center cylinder, the extension screw and the support pipe are coaxially arranged at the center.

[0010] The beneficial effects of the present application are:

[0011] By setting the positioning rod, the connecting circular pipe, the center cylinder, the extending screw rod and the supporting pipe are coaxially arranged, the supporting rod of the layer above the current layer can be sleeved on the connecting circular pipe, and the load above the circular pipe can be accurately and accurately transmitted to the supporting steel pipe below, so that safe and effective continuous multi-layer coaxial support is formed, and pouring is simultaneously performed; the support structure strength is improved by setting the support changing bracket; when the support steel pipe, the bottom disc and the main and secondary keels and the wood formwork support formwork material are directly removed, the support changing bracket is left in the concrete floor, no dangerous parts such as long reinforcing steel bar head and reinforcing steel bar end are reserved, and safety is improved.

[0012] As a further improvement of the above technical solution, the connecting rod is provided with a positioning screw hole, and the positioning screw hole and the fixing hole are connected through a positioning screw rod.

[0013] As a further improvement of the above technical solution, the cross-sectional area of the center cylinder is equivalent to the cross-sectional area of the supporting pipe.

[0014] As a further improvement of the above technical solution, the top support is provided with a central hole for the positioning rod to pass through.

[0015] As a further improvement of the above technical solution, the formwork supporting device further comprises a main keel, a secondary keel and a formwork, the end of the main keel is clamped in the top support, the end of the secondary keel is located between the disc and the main keel, and the formwork is located between the disc and at least three connecting rods.

[0016] As a further improvement of the above technical solution, the number of main keels is two, and the positioning rod passes through between the two main keels.

[0017] As a further improvement of the above technical solution, the main keel is a connecting circular pipe, and the cross section of the secondary keel is square.

[0018] As a further improvement of the above technical solution, the main keel is a steel pipe, and the secondary keel is a wooden square.

[0019] As a further improvement of the above technical solution, the number of secondary keels is two, and the positioning rod passes through between the two secondary keels.

[0020] The application also provides a multi-layer coaxial continuous formwork supporting method, which is applied to the formwork supporting device and comprises the following steps:

[0021] Placing a bottom supporting assembly;

[0022] Placing two main keels on the top support;

[0023] Placing two secondary keels above the top support in different directions from the main keels;

[0024] The disc is placed on the top of the double keel, the positioning rods under the disc device are sequentially inserted into the positioning slots of the extending screw rods through the secondary keel, the main keel and the top support;

[0025] The wooden template is installed on the top of the disc;

[0026] The support frame is installed on the wooden template, the positioning screw rods are sequentially inserted into the connecting rods of the support frame, the template and the disc and fixed;

[0027] The floor steel bars are bound on the wooden template;

[0028] The steel pipes are supported on the top of the support frame through the connecting circular pipe sleeves, and the upper support frame is continued to complete the formwork process of the upper structure according to the conventional method;

[0029] After the preparation work of all pouring layers is completed, the concrete is poured integrally;

[0030] The support steel pipes, the bottom disc and the main keel, the secondary keel and the wooden template are removed, and the support frame is left in the concrete floor. BRIEF DESCRIPTION OF DRAWINGS

[0031] The application will be further described below in combination with the drawings and embodiments;

[0032] Figure 1 It is a multi-layer coaxial continuous formwork device provided by the application, and the installation structure schematic diagram of an embodiment thereof;

[0033] Figure 2 It is a multi-layer coaxial continuous formwork device provided by the application, and the structure schematic diagram of an embodiment thereof;

[0034] Figure 3 It is a multi-layer coaxial continuous formwork device provided by the application, and the structure schematic diagram of the support frame of an embodiment thereof.

[0035] Reference signs:

[0036] Support frame 100, center cylinder 110, side support rod 120, connecting circular pipe 130, connecting plate 140, connecting rod 150, positioning screw hole 151, positioning screw rod 160;

[0037] Disc 200, positioning rod 210, fixing hole 220;

[0038] Bottom support assembly 300, top support 310, support pipe 320, extending screw rod 330, adjustable knob 340, main keel 400, secondary keel 500, template 600. DETAILED DESCRIPTION

[0039] The specific embodiments of the present application will be described in detail in this part, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0040] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0041] In the description of the present application, if the word such as "several" is described, the meaning is one or more, the meaning of more than two, greater than, less than, more than, etc. is not included in the number, and the above, below, etc. is understood as including the number.

[0042] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installation, connection and the like should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0043] As shown in Figure 1 , the general formwork support has support frame, adjustable screw rod, adjusting screw, secondary keel 500, main keel 400 and formwork 600 and the like. The support system is generally a steel pipe material such as a disc buckle, the main keel 400 is generally a double steel pipe, the secondary keel 500 is generally a square wood material, and the formwork 600 is generally a wooden formwork 600. Referring to Figures 1 to 3 , the present application provides a multi-layer coaxial continuous formwork device and a formwork method, and the following embodiments are made:

[0044] A multi-layer coaxial continuous formwork device includes a change bracket 100, a disc 200 and a bottom support assembly 300, which can realize multi-layer continuous formwork and pouring at the same time.

[0045] Referring to Figure 1 , the change bracket 100 includes a center cylinder 110, three side support rods 120 and a connecting circular pipe 130. The center cylinder 110 is generally a solid round steel, and the cross-sectional area of the center cylinder 110 is the same as that of the support pipe 320 of the bottom support assembly 300. The same cross section can equivalently transfer load to ensure the safety of the structure. And compared with hollow circular pipe, solid round steel can reduce the influence on the quality of concrete floor, and the strength of steel is better than that of concrete, which can also enhance the strength of the structure.

[0046] The top of the center column 110 is provided with a connecting plate 140, which is circular, and can also be square or other shapes. The connecting plate 140 bears the tensile force and can further fix the side support rod 120. The connecting circular pipe 130 is arranged on the top of the connecting plate 140. The connecting circular pipe 130 on the upper part of the support bracket 100 can be sleeved into the common support pipe 320, which can resist the sliding and shearing of the steel pipe that continues to support the upper part. In the process of multi-layer continuous formwork, when the upper structure generates horizontal force, the circular steel ring can effectively resist these forces to ensure the stability of the entire support system.

[0047] The bottom of the center column 110 is provided with three connecting rods 150 arranged circumferentially. The connecting rods 150 extend along the radial direction of the center column 110. The two ends of the side support rod 120 are connected with the connecting plate 140 and the connecting rod 150, respectively. The outer end of the connecting rod 150 is provided with a positioning screw hole 151. The connecting rod 150 is provided with a positioning screw hole 151. The positioning screw rod 160 with a head can pass through the positioning screw hole 151 and pass through the fixing hole 220 of the lower wooden formwork 600 and the disc 200 to be fixed and connected. This design not only increases the stability of the entire structure, but also facilitates installation and positioning. For example, in actual construction, workers can quickly and accurately install the positioning screw rod 160 through these reserved positioning screw holes 151 to ensure the coaxiality of each component. The lateral rod plays a stabilizing role and is used to resist the eccentric moment transmitted by the upper center steel. Further, the lateral rod can be designed with a small diameter circular steel, which reduces the amount of material used while ensuring stability. The number of side support rods 120 can be set according to actual conditions.

[0048] The disc 200 is provided with a fixing hole 220 arranged annularly and spaced apart at the edge for connecting and fixing with the side support rod 120. The center bottom of the disc 200 is provided with a positioning rod 210. The disc 200 not only can effectively transmit and disperse the load, but also can ensure the accurate positioning of each component. For example, in the construction process, workers can quickly and accurately position the lower screw through the small diameter circular steel at the center of the disc 200 to ensure the coaxiality of the entire support system. When the upper structure generates eccentric load, these lateral small diameter circular steels can provide additional support force to prevent the entire support system from tilting or deforming.

[0049] The bottom support assembly 300 comprises a top support 310 and a support pipe 320, the bottom of the top support 310 is provided with an extension screw 330, the top end of the extension screw 330 is provided with a positioning groove for inserting the positioning rod 210, the extension screw 330 is threadedly connected with an adjustable knob 340, the adjustable knob 340 is lifted up and down to adjust the length of the extension into the support pipe 320, so as to adjust the height of the entire bottom support to adapt to the support layer height, the upper end of the support pipe 320 is connected with the extension screw 330, the connecting pipe 130, the center column 110, the extension screw 330 and the support pipe 320 are coaxially arranged. Among them, the adjustable knob 340 can be as shown in the figure, which is a nut, the side of the nut is provided with a hand screw part, which is convenient for hand screwing. In other embodiments, two nuts can also be provided to reduce looseness.

[0050] The positioning screw 160 with the end can pass through the positioning screw hole 151 and pass through the lower wooden formwork 600 and the disc 200 to play a positioning role. The disc 200 is provided with a smaller diameter positioning rod 210 in the center, the round steel is inserted into the center positioning groove at the top end of the extension screw through the hole of the lower top support 310, which plays a further positioning role of the lower screw to maintain the coaxial arrangement of the connecting pipe 130, the center column 110, the extension screw 330 and the support pipe 320. The support pipe 320 of the support device of the upper layer is sleeved on the connecting pipe 130, so that the load above the connecting pipe can be accurately and accurately transmitted to the lower support steel pipe to form a safe and effective continuous multi-layer support.

[0051] The application sets the positioning rod 210, the connecting pipe 130, the center column 110, the extension screw 330 and the support pipe 320 are coaxially arranged, and the support pipe of the upper layer of the present layer support can be sleeved on the connecting pipe 130, the load above the connecting pipe can be accurately and accurately transmitted to the lower support steel pipe to form a safe and effective continuous multi-layer coaxial support, and at the same time, the support structure strength is improved by setting the support bracket 100; when the support steel pipe, the bottom disc 200 and the main and secondary keels 500 and the wooden formwork 600 are directly removed, the support bracket 100 is left in the concrete floor, no long steel head, steel end and other dangerous parts are reserved, and the safety is improved.

[0052] Further improvement, the top support 310 is provided with a center hole for the positioning rod 210 to pass through, which facilitates the positioning rod 210 to pass through the top support 310 to be inserted into the positioning groove at the top end of the extension screw 330.

[0053] Further improvement, the formwork supporting device further comprises a main keel 400, a secondary keel 500 and a formwork 600, the end of the main keel 400 is clamped in the top support 310, the end of the secondary keel 500 is located between the disc 200 and the main keel 400, the secondary keel 500 and the secondary keel 500 are arranged vertically, and the formwork 600 is located between the disc 200 and the three connecting rods 150. Wherein, the number of the main keel 400 is two, the positioning rod 210 passes through between the two main keels 400. The number of the secondary keel 500 is two, the positioning rod 210 passes through between the two secondary keels 500, the main keel 400 is a connecting pipe 130, and the cross section of the secondary keel 500 is square. The main keel 400 is a steel pipe, and the secondary keel 500 is a square timber. When the main keel 400 and the secondary keel 500 are placed, a certain gap needs to be reserved between the two main keels 400 to facilitate the positioning rod 210 to pass through, and a certain gap also needs to be reserved between the two secondary keels 500 to facilitate the positioning rod 210 to pass through.

[0054] The application also provides an embodiment of a multi-layer coaxial continuous formwork supporting method, which is applied to the formwork supporting device in any one of the above and comprises the following steps:

[0055] The bottom support assembly 300 is placed;

[0056] Two main keels 400 are placed on the top support 310;

[0057] Two secondary keels 500 are placed above the top support 310 in different directions from the main keel 400;

[0058] The disc 200 is placed above the two square timbers, the positioning rod 210 of the disc 200 device passes through the secondary keel 500, the main keel 400 and the top support 310 in sequence and is inserted into the positioning groove of the extending screw rod 330;

[0059] The wooden formwork 600 is installed above the disc 200;

[0060] The support bracket is installed on the wooden formwork 600, the positioning screw rod 160 passes through the connecting rod 150 of the support bracket 100, the formwork 600 and the disc 200 in sequence and is fixed;

[0061] The floor steel bars are bound on the wooden formwork 600;

[0062] The upper support steel pipe is sleeved on the connecting pipe 130 on the top of the support bracket 100, and the upper support bracket continues to complete the formwork supporting process of the upper structure according to the conventional method;

[0063] After the preparation work of all pouring layers is completed, the concrete is poured as a whole;

[0064] The support steel pipe, the bottom disc 200 and the main keel 400, the secondary keel 500 and the wooden formwork 600 are removed, and the support bracket 100 is left in the concrete floor.

[0065] The following is a specific embodiment of the method

[0066] 1. Set the bottom support assembly 300 according to the formwork calculation results, and place two main keels 400, which are usually steel pipes, on the top support 310. When placing the support, simultaneously and uniformly place multiple bottom support assemblies 300, and according to the height of the layer to be supported, adjust the adjustable knob 340 to the same position of the extension screw 330, and then insert or threadedly connect the lower end of the extension screw 330 into the support pipe 320, with the adjustable knob 340 abutting the upper end surface of the support pipe 320. By rotating the adjustable knob 340, the support height can be adjusted.

[0067] 2. Place two secondary keels 500 above the top support 310, in different directions from the steel pipe, leaving a certain gap in the middle to facilitate the passage of the small-diameter round steel of the bottom disc 200.

[0068] 3. Place the disc 200 above the wooden keel, with the lower positioning rod 210 of the disc 200 aligned with the center hole pre-drilled on the top support 310, and the disc 200 naturally placed above the secondary keel 500.

[0069] 4. Install the wooden formwork 600 above the disc 200, and drill holes in the wooden formwork 600 at positions aligned with the pre-drilled holes in the disc 200.

[0070] 5. Install the support bracket on the wooden formwork 600, and install the positioning screw 160, which passes through the positioning screw hole 151 of the connecting rod 150 of the support bracket 100, the drilled hole of the wooden formwork 600, and the fixed hole 220 of the bottom disc 200, with all centers coaxial, and three positioning screws 160 are set to achieve the coaxiality of the upper support pipe 320, the central cylinder 110 of the support bracket 100, and the lower support steel pipe.

[0071] 6. Tie the floor steel bars on the formwork 600, and add steel bars to the positions of the support bracket 100 to ensure that the steel bar spacing meets the design requirements.

[0072] 7. Support the steel pipe above the outer sleeve of the circular pipe 130 connected to the top of the support bracket 100, and continue the formwork process of the upper structure according to the conventional method.

[0073] 8. After all the preparation work for pouring is completed, pour the concrete in the whole structure. This method allows multiple layers of the structure to be poured simultaneously without waiting for each layer to solidify individually. For example, in the construction of a multi-story building, multiple floors can be formworked and poured simultaneously instead of layer by layer, greatly improving the construction efficiency and saving the construction period.

[0074] 9. Finally, remove the supporting steel pipe, bottom disc 200, main and secondary keels 500, formwork 600 and other formwork materials, and replace the bracket 100 left in the concrete floor.

[0075] 10. Cut and polish the protruding bolt head under the floor, and use mortar to finish and decorate. This processing method ensures safety and aesthetics after form removal. For example, by cutting and polishing the protruding bolt head, the hidden danger that may cause injury to personnel is eliminated, and at the same time, the surface is finished and decorated with mortar, improving the flatness and aesthetics of the surface, and preparing for the subsequent decoration work.

[0076] The preferred embodiments of the application are specifically described above, but the application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A multi-layer coaxial continuous formwork support device, characterized in that, include: The replacement bracket includes a central cylinder, at least three side support rods, and a connecting tube. The central cylinder has a connecting plate at its top, and the connecting tube is located on top of the connecting plate. At least three connecting rods are evenly distributed around the bottom of the central cylinder. The connecting rods extend radially along the central cylinder, and the two ends of the side support rods are connected to the connecting plate and the connecting rod, respectively. The disc has fixing holes spaced around its edge for connecting and fixing with the side support rod, and a positioning rod is provided at the bottom center of the disc; The bottom support assembly includes a top support and a support tube. The bottom of the top support is provided with an extending screw, and the top of the extending screw is provided with a positioning groove for inserting a positioning rod. The extending screw is threadedly connected to an adjustable knob. The support tube is connected to a connecting round tube or the extending screw. The connecting round tube, the central cylinder, the extending screw, and the support tube are coaxially arranged.

2. The multi-layer coaxial continuous formwork support device according to claim 1, characterized in that: The connecting rod is provided with a positioning screw hole, and the positioning screw hole and the fixing hole are connected by a positioning screw.

3. The multi-layer coaxial continuous formwork support device according to claim 1, characterized in that: The cross-sectional area of ​​the central cylinder is set to be equivalent to that of the support tube.

4. The multi-layer coaxial continuous formwork support device according to claim 1, characterized in that: The top support has a central hole through which the positioning rod passes.

5. A multi-layer coaxial continuous formwork support device according to claim 1, characterized in that: The formwork support device also includes a main keel, a secondary keel, and a template. The end of the main keel is engaged in the top support, the end of the secondary keel is located between the disc and the main keel, and the template is located between the disc and at least three connecting rods.

6. A multi-layer coaxial continuous formwork support device according to claim 5, characterized in that: There are two main keels, and the positioning rod passes between the two main keels.

7. A multi-layer coaxial continuous formwork support device according to claim 6, characterized in that: The main keel is a connecting round pipe, and the secondary keel has a square cross-section.

8. A multi-layer coaxial continuous formwork support device according to claim 6, characterized in that: The main keel is made of steel pipe, and the secondary keel is made of timber.

9. A multi-layer coaxial continuous formwork support device according to claim 6, characterized in that: There are two secondary keels, and the positioning rod passes between the two secondary keels.

10. A method for multi-layer coaxial continuous formwork, characterized in that, The formwork device applied to any one of claims 1 to 9 comprises: Place the bottom support components; Place two main keels on the top support; Two secondary keels are placed directly above the top support, in a different direction from the main keel; A disc is placed above both wooden keels. The positioning rod below the disc device passes through the secondary keel, the main keel, and the top support in sequence and is inserted into the positioning groove of the protruding screw. Install wooden templates above the disc; Install the support frame on the wooden template, and fix the positioning screw through the connecting rod of the support frame, the template and the disc in sequence; Tie floor slab reinforcement bars to the wooden formwork; Connect the steel pipe above the round tube sleeve at the top of the bracket, and continue the formwork process of the upper structure using the conventional method. Once all the preparation work for the pouring layers is completed, the concrete pouring will proceed as a whole. Remove the supporting steel pipes, bottom disc, main keel, secondary keel, and wooden formwork, and replace the brackets with ones left in the concrete floor slab.

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