A large template legless support structure

Abstract

A large formwork legless support structure includes an anchoring system and a support system. The anchoring system mainly consists of a positioning cone, bolts, anchor bars and plastic cups. The support system mainly consists of a formwork vertical back support, a connecting seat and a support base. The plastic cup on the positioning cone is connected to the anchor bars and then pre-embedded in the first-cast concrete. The bolts are used in conjunction with the positioning cone. The formwork vertical back support is directly located on the connecting seat and fixedly connected to the connecting seat. The connecting seat is fixed to the support base, and the support base is fixedly connected to the bolts. The present invention has a simple and reliable structure, is easy to install and disassemble, occupies a small space, and is fast and convenient to construct. It is suitable for adjacent dam sections with small height differences or upstream and downstream dam surfaces where the leg position cannot be adjusted. The main components used, except for the embedded anchor bars, can be reused, saving a lot of material costs. At the same time, after the formwork is removed, it is only necessary to plaster and seal the holes of the embedded positioning cones. The treatment is simple and will not pollute the concrete surface.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a large template legless support structure. Background Art

[0002] With the rapid development and utilization of water resources in my country, hydropower stations that provide clean energy for national development have begun to shift their construction to the complex mountainous areas in the west. More and more water-blocking dams are choosing concrete dams. The compartmentalized pouring of concrete dams will inevitably require the construction and installation of a large number of large formworks, and the formwork support structure is of great significance to the stability and quality of the formwork.

[0003] The traditional cantilever large formwork support structure is a legged support structure that uses a large number of trusses, diagonal braces, and load-bearing tripods. It has a complex structure and is relatively cumbersome to construct. The support structure occupies a large space and requires a large amount of resources. It is not suitable for the transverse joints of adjacent dam sections with small height differences. The legless support structure used by the semi-cantilever formwork does not have a standard form as a reference, and construction can only be carried out based on existing work experience. The conventional practice is to directly use high-strength bolts to fix the bottom of the formwork or weld dowels as supports, and then use internal pulling and internal support to fix the formwork. The direct use of high-strength bolts makes it difficult to adjust the formwork angle and is difficult to install and disassemble the formwork. The method of using welded dowels as fixed supports is convenient for adjusting the formwork angle and relatively simple to install, but it has disadvantages such as dowels that cannot be reused, high steel consumption, contamination of the concrete surface caused by cutting dowels when removing the formwork, and cumbersome post-processing of dowel ends. Therefore, it is not suitable for promotion and use. In general, there is no good form of legless support structure for large formwork that can be promoted and used. Therefore, developing a legless support structure that is simple, easy to install, reliable and reusable has become an important task that needs to be completed at present. Summary of the Invention

[0004] In order to solve the technical problems described above, the present invention provides a large template legless support structure, which can achieve fast and convenient construction, reduce resource input and improve construction efficiency while ensuring the reliability of the support structure.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a legless support structure for a large formwork, which includes an anchoring system and a support system, wherein the anchoring system is mainly composed of a positioning cone, bolts, anchor bars and plastic cup sleeves, and the support system is mainly composed of a formwork vertical back support, a connecting seat and a support base; the plastic cup sleeve on the positioning cone is fixedly connected to the anchor bar and pre-embedded in the pre-cast concrete, and the bolts are used in conjunction with the positioning cone; the formwork vertical back support is directly located on the connecting seat and fixedly connected to the connecting seat, the connecting seat is fixedly connected to the support base, and the support base is fixedly connected to the bolts.

[0007] The template vertical back support is welded together by two channel steels and several steel plates. The notches of the two channel steels are arranged back to back in parallel. A steel plate is welded between the two channel steels. Pre-set holes are set at corresponding positions on the lower parts of the two channel steels.

[0008] The connecting seat includes a wedge-shaped steel plate, two first steel plates, two connecting seat steel plates and steel bars; the two connecting seat steel plates are arranged in parallel, the two first steel plates are arranged in parallel, the two connecting seat steel plates and the two first steel plates are vertically fixedly connected, one of the first steel plates is fixedly arranged on the edge of one side of the two connecting seat steel plates, and the two connecting seat steel plates below the first steel plate are provided with notches at corresponding positions, and the length of the first steel plate is greater than the width between the two connecting seat steel plates; the steel bars are vertically fixed between the two connecting seat steel plates; corresponding positions of the two connecting seat steel plates are each provided with a connecting seat reserved square hole, a connecting seat reserved elliptical hole and several connecting seat reserved holes.

[0009] The support base includes a plug-in, a second steel plate, a third steel plate, a fourth steel plate and two channel steels. The support base is welded together by the two channel steels and the second steel plate, the third steel plate and the fourth steel plate. The notches of the two channel steels are arranged back to back in parallel. Several first support base reserved holes and second support base reserved holes are arranged at corresponding positions of the two channel steels. The diameters of the first support base reserved holes and the connecting seat reserved holes on the connecting seat are consistent.

[0010] The plug-in unit is L-shaped.

[0011] The fourth steel plate is provided with a U-shaped slot, and the support base is connected to the bolts through the U-shaped slot on the fourth steel plate.

[0012] The connecting seat is connected to the supporting base, and is fixed by inserting a second latch through the reserved hole of the connecting seat and the reserved hole of the first supporting base, and a latch anti-dropping fastener is inserted into the second latch.

[0013] The template vertical back support is connected to the connecting seat. The template vertical back support is connected to the connecting seat and the connecting module by inserting the reserved hole of the template vertical back support and the reserved elliptical hole of the connecting seat on the connecting seat into the first pin, and the pin anti-disconnection fastener is inserted into the first pin, and the wedge-shaped steel plate is inserted into the reserved square hole of the connecting seat.

[0014] The bolts are M42 high-strength bolts.

[0015] The anchor bar is in a snake shape and has a length of about 75 cm.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The structure of the present invention is simple and reliable, easy to install and disassemble, and occupies a small space. Under the premise of ensuring the reliability of the supporting structure, the construction is fast and convenient, and the construction efficiency is high. It is suitable for the transverse joints of adjacent dam sections or upstream and downstream dam surfaces with a small height difference (where the outriggers cannot be installed).

[0018] 2. The main components used in the present invention, except for the embedded anchor bars, can be reused, which saves a lot of material costs compared to traditional methods.

[0019] 3. With the present invention, after the formwork is removed, it is only necessary to plaster and seal the pre-buried positioning cone holes, which is simple to handle and will not pollute the concrete surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a left side view of the present invention;

[0022] Figure 3 It is a front view of the support base of the present invention;

[0023] Figure 4 It is a left side view of the support base of the present invention;

[0024] Figure 5 This is a front view of the connecting seat of the present invention;

[0025] Figure 6 It is a left side view of the connecting seat of the present invention.

[0026] Reference numerals:

[0027] 1-formwork vertical back support, 2-connecting seat, 3-support base, 4-bolt, 5-positioning cone, 6-anchor bar, 7-wedge-shaped steel plate, 8-connecting module, 9-connecting seat reserved square hole, 10-connecting seat reserved elliptical hole, 11-latch anti-drop fastener, 12-first steel plate, 13-connecting seat reserved hole, 14-first support base reserved hole, 15-plug-in, 16-second steel plate, 17-third steel plate, 18-second support base reserved hole, 19-fourth steel plate, 20-rebar, 21-first latch, 22-second latch. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with specific implementation methods. The specific implementation methods are further explanations of the principles of the present invention and do not limit the present invention in any way. Technologies that are the same or similar to the present invention do not exceed the scope of protection of the present invention.

[0029] See also Figures 1 to 6 The present invention provides a large formwork legless support structure, which includes an anchoring system and a support system, wherein the anchoring system is mainly composed of a positioning cone 5, a bolt 4, an anchor bar 6 and a plastic cup sleeve. The anchoring system is the main force-bearing structure of the formwork support structure; the support system is mainly composed of a formwork vertical back support 1, a connecting seat 2 and a support base 3. The bolt 4 is an M42 high-strength bolt, or a high-strength bolt of appropriate size is selected according to the height of the concrete riser; the anchor bar 6 is serpentine, with a length of about 75 cm, or can be adjusted according to the height of the riser; the positioning cone 5 is covered with a plastic cup sleeve and fixedly connected to the anchor bar 6, and then pre-embedded in the first poured concrete, and the bolt 4 is used in conjunction with the positioning cone 5; the formwork vertical back support 1 is directly located on the connecting seat 2 and fixedly connected to the connecting seat 2, the connecting seat 2 is fixedly connected to the support base 3, and the support base 3 is fixedly connected to the bolt 4.

[0030] The template vertical back support 1 is welded together by two channel steels and several steel plates. The notches of the two channel steels are arranged back to back in parallel. A steel plate is welded between the two channel steels. A reserved hole is set at the corresponding position of the lower part of the two channel steels.

[0031] The connecting seat 2 includes a wedge-shaped steel plate 7, two first steel plates 12, two connecting seat steel plates, and steel bars 20. The two connecting seat steel plates are arranged in parallel, and the two first steel plates 12 are arranged in parallel. The two connecting seat steel plates and the two first steel plates 12 are vertically fixedly connected. One of the first steel plates 12 is fixedly arranged at the edge of one side of the two connecting seat steel plates. The two connecting seat steel plates below the first steel plate 12 have notches at corresponding positions. The length of the first steel plate 12 is greater than the width between the two connecting seat steel plates. The steel bars 20 are vertically fixed between the two connecting seat steel plates. The corresponding positions of the two connecting seat steel plates are each provided with a connecting seat reserved square hole 9, a connecting seat reserved elliptical hole 10, and several connecting seat reserved holes 13, preferably four connecting seat reserved holes 13. The first steel plate 12 mainly functions to transmit force and place the template vertical back support 1. The steel bars 20 function to connect the steel plates on both sides of the connecting seat 2 as a whole and to place the connecting module 8 after the template is installed.

[0032] The support base 3 includes an insert 15, a second steel plate 16, a third steel plate 17, a fourth steel plate 19, and two channel steels. The support base 3 is welded together with the two channel steels, the second steel plate 16, the third steel plate 17, and the fourth steel plate 19. The notches of the two channel steels are arranged outwardly and back to back in parallel. The corresponding positions of the two channel steels are each provided with a plurality of first support base reserved holes 14 and a second support base reserved hole 18, preferably 8 first support base reserved holes 14. The first support base reserved holes 14 and the connection seat reserved holes 13 on the connection seat 2 have the same diameter. The second steel plate 16 is used to strengthen the integrity of the support base 3, and the third steel plate 17 is used to strengthen the support base 3. The fourth steel plate 19 is provided with a U-shaped slot. The support base 3 is connected to the bolt 4 by clamping the bolt 4 through the U-shaped slot on the fourth steel plate 19. The insert 15 is L-shaped and is inserted into the second support base reserved hole 18 to lock the bolt 4, making the connection more secure.

[0033] The connecting base 2 is fixedly connected to the support base 3. The second latch 22 is inserted into the appropriate holes 13 and 14 of the connecting base to secure the two. The latch anti-drop fastener 11 is inserted into the second latch 22 to secure the second latch 22. The connecting base 2 transmits force to the support base 3 through the first steel plate 12 and the second latch 22.

[0034] The formwork vertical back support 1 is connected to the connection base 2 by inserting the first latch 21 into the reserved hole of the formwork vertical back support 1 and the reserved elliptical hole 10 on the connection base 2. The formwork vertical back support 1 is connected to the connection base 2 and the connection module 8, and the latch anti-drop fastener 11 is inserted into the first latch 21 to fix it. The wedge-shaped steel plate 7 is inserted into the reserved square hole 9 of the connection base. This legless support structure relies on the first latch 21 and the wedge-shaped steel plate 7 to fix the formwork vertical back support 1; relies on the first steel plate 12 and the first latch 21 to withstand the force of the formwork vertical back support 1; the vertical displacement of the formwork vertical back support 1 is limited by inserting the first latch 21 into the reserved elliptical hole 10 of the connection base, and the horizontal displacement of the formwork vertical back support 1 is limited by inserting the wedge-shaped steel plate 7 into the reserved square hole 9 of the connection base.

[0035] The inclination angle of the formwork's vertical back support 1, and thus the formwork itself, is controlled by controlling the position of the first latch 21 of the connector 2 inserted into the pre-reserved elliptical hole 10 and the length of the wedge-shaped steel plate 7 inserted into the pre-reserved square hole 9. The connector 2 and support base 3 are painted for protection to prevent rust and contamination. To disassemble the formwork, force is applied through the connector 8 to separate it from the concrete surface.

[0036] The specific operation of the present invention is as follows:

[0037] (1) The positioning cone 5 is covered with a plastic cup sleeve and connected to the anchor bar 6 and pre-buried in the pre-cast concrete. The bolt 4 is used in conjunction with the positioning cone 5.

[0038] (2) After the positioning cone 5 and the bolt 4 have been inspected and accepted, the support base 3 is connected to the bolt 4 through the U-shaped slot on the fourth steel plate 19, and the bolt 4 is tightened.

[0039] (3) The connecting seat 2 is connected to the supporting base 3, and the second latch 22 is inserted into the appropriate reserved hole 13 of the connecting seat and the reserved hole 14 of the first supporting base for fixing, and the latch anti-drop fastener 11 is inserted into the second latch 22 for fixing.

[0040] (4) The formwork and the formwork vertical support 1 are connected to the connecting seat 2 when hoisted by a car crane. The formwork vertical support 1 is connected to the connecting seat 2 and the connecting module 8 by inserting the first pin 21, and the pin anti-drop fastener 11 is inserted into the first pin 21 to fix it. The wedge-shaped steel plate 7 is inserted into the square hole 9 reserved in the connecting seat, and its insertion length is adjusted to adjust the inclination angle of the formwork and the formwork vertical support 1. After the support system is installed, the internal support steel bars are pulled into the construction formwork. After confirming that the formwork is stable, the car crane can be removed.

[0041] (5) Concrete pouring is carried out. After the concrete construction is completed and the age requirement is met, the wedge-shaped steel plate 7 is pulled out with the assistance of a truck crane. Then, the vertical back support 1 of the formwork is pulled by applying force through the connecting module 8. After confirming that the formwork is separated from the concrete surface, the first latch 21 is removed. The formwork is lifted by the truck crane, and then the second latch 22, the connecting seat 2, and the supporting base 3 are removed in turn. The embedded positioning cone 5 and the bolt 4 are pulled out. After the formwork is removed, the hole in the positioning cone 5 is filled with plaster.

[0042] (6) The connecting seat 2, supporting base 3, bolt 4, and positioning cone 5 are maintained after the template is removed, and can be reused after confirming that there are no quality problems or damage, and enter the next template installation and disassembly cycle.

[0043] The present invention solves the problem of difficulty in adjusting the angle of the template when directly using bolts to fix it by connecting the support base 3 with the bolts 4 and the support base 3 with the connecting base 2, and the template installation is easy; by using the bolts 4 as the main force-bearing part, the problem of pollution to the concrete surface caused by disassembly of the template fixed with dowels and the cumbersome handling of dowels is solved; the basic components of the present invention can be reused, reducing material investment; it can be completed in just a few steps, using fewer tools, and the construction tools are easy to obtain, which not only saves equipment costs but also improves construction efficiency.

Claims

1. A large formwork legless support structure, characterized by: The support structure comprises an anchoring system and a support system, wherein the anchoring system mainly comprises a positioning cone (5), a bolt (4), an anchor bar (6) and a plastic cup sleeve, and the support system mainly comprises a template vertical back support (1), a connecting seat (2) and a support base (3); the positioning cone (5) is covered with a plastic cup sleeve and fixedly connected to the anchor bar (6) and then pre-buried in the pre-cast concrete, and the bolt (4) and the positioning cone (5) are used in conjunction with each other; a reserved hole is provided at the lower part of the template vertical back support (1); the connecting seat (2) comprises a wedge-shaped steel plate (7), two first steel plates (12), two connecting seat steel plates and steel bars (20), and corresponding positions of the two connecting seat steel plates are respectively provided with a connecting seat reserved square hole (9), a connecting seat reserved elliptical hole (10) and a plurality of connecting seat reserved holes (13); the support base (3) comprises a plug-in (15), a second steel plate (16 ), a third steel plate (17), a fourth steel plate (19) and two channel steels, and a plurality of first support base reserved holes (14) and second support base reserved holes (18) are respectively provided at corresponding positions of the two channel steels; the template vertical back support (1) is directly seated on the connecting seat (2) and fixedly connected to the connecting seat (2); the template vertical back support (1) is connected to the connecting seat (2) and the connecting module (8) by inserting the reserved hole of the template vertical back support (1) and the connecting seat reserved elliptical hole (10) on the connecting seat (2) into the first pin (21), and the wedge-shaped steel plate (7) is inserted into the connecting seat reserved square hole (9); the connecting seat (2) is fixedly connected to the support base (3) by inserting the second pin (22) through the connecting seat reserved hole (13) and the first support base reserved hole (14); the support base (3) is fixedly connected to the bolt (4).

2. A large formwork legless support structure according to claim 1, characterized in that: The template vertical back support (1) is welded together by two channel steels and several steel plates. The notches of the two channel steels are arranged back to back in parallel. A steel plate is welded between the two channel steels. Pre-set holes are respectively provided at corresponding positions on the lower parts of the two channel steels.

3. The large formwork legless support structure according to claim 1 is characterized by: The two connecting seat steel plates of the connecting seat (2) are arranged in parallel, the two first steel plates (12) are arranged in parallel, the two connecting seat steel plates and the two first steel plates (12) are vertically fixedly connected, one of the first steel plates (12) is fixedly arranged on the edge of one side of the two connecting seat steel plates, and the two connecting seat steel plates below the first steel plate (12) are provided with notches at corresponding positions, and the length of the first steel plate (12) is greater than the width between the two connecting seat steel plates; the steel bar (20) is vertically fixed between the two connecting seat steel plates.

4. The large formwork legless support structure according to claim 1 is characterized by: The support base (3) is formed by welding two channel steels and a second steel plate (16), a third steel plate (17), and a fourth steel plate (19). The notches of the two channel steels are arranged outwardly back to back in parallel, and the diameters of the first support base reserved holes (14) on the two channel steels and the connection seat reserved holes (13) on the connection seat (2) are consistent.

5. The large formwork legless support structure according to claim 4 is characterized in that: The plug-in unit (15) is L-shaped.

6. The large formwork legless support structure according to claim 4 is characterized by: The fourth steel plate (19) is provided with a U-shaped slot, and the support base (3) is connected to the bolt (4) via the U-shaped slot on the fourth steel plate (19).

7. A large formwork legless support structure according to claim 3 or 4, characterized in that: A latch anti-dropout fastener (11) is inserted into the second latch (22).

8. A large formwork legless support structure according to claim 2 or 3, characterized in that: A latch anti-drop fastener (11) is inserted into the first latch (21) for fixing.

9. The large formwork legless support structure according to claim 1, characterized in that: The bolts (4) are M42 high-strength bolts.

10. The large formwork legless support structure according to claim 1, characterized in that: The anchor bar (6) is serpentine and has a length of 75 cm.

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