Hexagonal prefabricated composite heat preservation formwork

Abstract

The utility model discloses a hexagonal prefabricated composite heat preservation template, which belongs to the technical field of heat preservation templates, and is characterized in that the whole template unit is in a regular hexagon shape, and comprises a panel, a support grid and a heat preservation structure; the supporting grid is arranged on the inner side face of the panel and comprises dense rib beams which are arranged in a staggered mode. The supporting grid comprises six triangular grids which are arranged at intervals; the inner ends of the middle multi-ribbed beams intersect at one point, and the outer ends of the middle multi-ribbed beams are connected with the peripheral multi-ribbed beams; the heat preservation structure makes contact with the dam body and comprises a heat preservation plate and a heat preservation layer. The insulation board is filled in the support grid; the outer side face of the dense rib beam is coated with the heat preservation layer. According to the utility model, the traditional integrated insulation board is divided into a plurality of small blocks which are further positioned through the supporting grids, so that the connection strength between the insulation board and the panel can be enhanced, and the stripping risk between the insulation board and the panel is reduced; the hexagonal structural design is adopted, automatic alignment can be achieved under the action of gravity during splicing, the field splicing difficulty is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermal insulation templates, and particularly relates to a hexagonal prefabricated composite thermal insulation template. Background Art

[0002] The non-disassembly insulation formwork has the advantages of high construction efficiency, good insulation effect, energy saving and environmental protection, improved wall bearing capacity, reduced noise, etc. It can not only improve the quality of the project, reduce costs, shorten the construction period, but also meet the requirements of environmental protection and energy saving. Therefore, the non-disassembly insulation formwork has a high promotion and application value.

[0003] In extreme environments such as severe cold weather, large temperature differences between day and night, or frequent temperature drops, the temperature control and crack prevention of concrete dam construction is severe. During the concrete pouring period without temporary insulation or the intermittent period of permanent insulation after the temporary insulation is removed, the temperature difference between the inside and outside of the dam is large, which can easily lead to cracks in the dam concrete. The non-removal insulation formwork can effectively solve the above problems.

[0004] However, the insulation layer of the existing non-disassembly insulation formwork is connected to the panel and the dam body by the bonding force between the insulation layer and the concrete and the connecting ribs. The surface of the insulation layer is relatively smooth, and the bonding force with the concrete is relatively low. The connecting ribs can only achieve point connection between the insulation layer and the panel and the dam body. Under the dual effects of extreme environment and water force, it is difficult to meet the overall connection strength requirements by relying on bonding force and point connection. The insulation layer is easy to peel off from the panel and the dam body, affecting the insulation effect; and when the insulation layer at the position of the connecting rib is locally stressed, the insulation layer is prone to structural damage, and the connection at this point fails, affecting the insulation effect of the entire formwork. In addition, the traditional insulation formwork is set as a rectangle. When assembling, the insulation formwork needs to be pushed horizontally, and there are many water-stopping structures and water-stopping measures between adjacent insulation formworks, which requires more consumables and limits the efficiency of on-site construction. Utility Model Content

[0005] The purpose of the utility model is to provide a hexagonal prefabricated composite insulation formwork to solve the problems in the above-mentioned background technology that the insulation layer in the insulation formwork and the prefabricated concrete are easily delaminated, there is a risk of peeling off from the dam body, affecting the insulation effect, and the rectangular insulation formwork has limited assembly efficiency and a large number of water-stopping consumables.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hexagonal prefabricated composite insulation formwork, used for dam casting, assembled from interconnected formwork units, wherein the formwork units are in a regular hexagon as a whole, including a panel, a support grid and an insulation structure;

[0008] The support grid is arranged on the inner side of the panel, and includes staggered multi-rib beams, and the multi-rib beams are divided into peripheral multi-rib beams and middle multi-rib beams according to the arrangement position; the support grid includes six triangular grids arranged at intervals; the middle multi-rib beams are radiated around the center of the panel, and the inner ends thereof intersect at one point, and the outer ends thereof are connected to the peripheral multi-rib beams;

[0009] The insulation structure is in contact with the dam body, and includes an insulation board and an insulation layer; the insulation board is filled in the supporting grid and is fixedly connected to the inner side of the panel, and the insulation board and the supporting grid together cover the inner side of the panel; the insulation layer is coated on the surface of the dense-rib beam.

[0010] Furthermore, it also includes load-bearing protrusions, which are arranged at the intersection positions of the support grid and on the middle multi-ribbed beam.

[0011] Furthermore, the thermal insulation structure also includes a thermal insulation sleeve, and the thermal insulation sleeve is arranged on the surface of the load-bearing protrusion.

[0012] Furthermore, the size and shape of the support grid are the same as those of the panel; and the edge of the peripheral multi-rib beam is flush with the edge of the panel.

[0013] Furthermore, a first embedded part is arranged inside the load-bearing protrusion, and the first embedded part is connected to the structural foundation of the dam body through tie bars.

[0014] Furthermore, a support frame is set up outside the panel; a second embedded part is set on the panel corresponding to the load-bearing protrusion, and the second embedded part is connected to the support frame through a connecting rod.

[0015] Furthermore, the outer side surface of the insulation board is flush with the outer side surface of the multi-rib beam and is made of XPS insulation material; the insulation layer is sprayed with a flexible insulation material; and the insulation sleeve is made of a rigid insulation material.

[0016] Furthermore, a reserved channel is provided on the peripheral multi-rib beam, and connecting bolts are arranged in the reserved channel, and adjacent template units are connected by the connecting bolts.

[0017] Furthermore, each set of opposite sides of the panel is respectively provided with grooves and tenons that cooperate with each other.

[0018] The utility model has the following beneficial effects:

[0019] The utility model provides a hexagonal prefabricated composite insulation template, which splits a traditional integrated insulation board into multiple small pieces and further positions them through a supporting grid, thereby enhancing the connection strength between the insulation board and the panel and reducing the risk of peeling between the two.

[0020] The utility model provides a hexagonal prefabricated composite thermal insulation formwork, in which load-bearing protrusions are arranged on the supporting grid. The load-bearing protrusions can be embedded in the post-cast dam body to balance their own gravity and form a self-stabilizing body. Especially when used for super-high arch dams, the risk of falling off due to structural gravity can be reduced. The dam body, the supporting grid and the panel are tightly connected together through the load-bearing protrusions, thereby increasing the connection strength between the formwork and the dam body and reducing the risk of peeling off.

[0021] The utility model provides a hexagonal prefabricated composite thermal insulation formwork, which adopts a hexagonal structural design and can be self-aligned under the action of gravity during assembly. No thrust is required in the horizontal direction (lateral), which reduces the difficulty of on-site assembly. Compared with a rectangle of the same area, the side length of the regular hexagon can be reduced by 7.5%, thereby saving building materials and improving construction efficiency.

[0022] The utility model provides a hexagonal prefabricated composite thermal insulation template. A support frame is arranged on the outer side of the template to assist in positioning and installation, thereby decomposing the stress on the inner reinforcement caused by the inner and outer inclinations of the template, reducing the number of reinforcement bars embedded in the dam body and reducing the construction cost.

[0023] The utility model provides a hexagonal prefabricated composite thermal insulation formwork, in which a support grid is arranged on the inner side of a panel, which can avoid affecting the erection of a support frame during the construction process. At the same time, it can reduce the upper and lower impact strength of the water body on the dam body during the operation of the dam body, and further reduce the risk of peeling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of assembling the template unit involved in the utility model;

[0025] Figure 2 It is a structural schematic diagram of the template unit involved in the utility model;

[0026] Figure 3 A diagram showing the connection relationship between the support grid and the panel involved in the utility model;

[0027] Figure 4 The utility model is a schematic diagram of the layout of the tie bars involved.

[0028] In the figure: 1-panel, 2-support grid, 21-peripheral dense-rib beam, 22-middle dense-rib beam, 3-load-bearing protrusion, 4-insulation structure, 41-insulation board, 5-tie reinforcement, 6-connecting bolts. Implementation

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1-3 As shown, the utility model provides a hexagonal prefabricated composite insulation formwork, which is assembled from interconnected formwork units, and the formwork units include a panel 1, a support grid 2, a load-bearing protrusion 3 and an insulation structure 4; the panel 1 is vertically arranged, and its side close to the dam body is the inner side, and the side away from the dam body is the outer side; the support grid 2 is arranged on the inner side of the panel 1, including staggered dense-rib beams; the load-bearing protrusions 3 are arranged at intervals on the outer side of the dense-rib beams; the insulation structure 4 is in contact with the dam body, including an insulation board 41, an insulation layer and an insulation sleeve, the insulation board 41 is filled in the support grid 2 and is fixedly connected to the inner side of the panel 1, and the insulation board 41 and the support grid 2 jointly cover the inner side of the panel 1; the insulation layer is coated on the surface of the dense-rib beam; the insulation sleeve is arranged on the surface of the load-bearing protrusion 3, and the insulation board 41 and the insulation layer, and the insulation layer and the insulation sleeve are connected to each other, thereby realizing a complete insulation protection function.

[0031] The bottom of the dam structure is the structural foundation, and anchor points are set on the structural foundation. The anchor points can be embedded bolts or embedded steel bars.

[0032] The panel 1, the support grid 2 and the load-bearing convex block 3 are all prefabricated reinforced concrete structures, and the three are connected by steel bars. A support frame is set up outside the panel 1. The adjacent template units are connected by mortise and tenon joints. A water stop structure is set up between adjacent template units.

[0033] The size and shape of the support grid 2 are the same as those of the panel 1. The multi-rib beams are divided into peripheral multi-rib beams 21 and middle multi-rib beams 22 according to the setting position. The edge of the peripheral multi-rib beam 21 is flush with the edge of the panel 1. The peripheral multi-rib beams 21 of the adjacent template units are provided with reserved channels, and connecting bolts 6 are provided in the reserved channels. The connection of the two template units is realized by the connecting bolts 6 to increase the connection strength.

[0034] The cross section of the peripheral multi-rib beam 21 is a right-angled trapezoid, and the side close to the outer edge is a right angle. The cross section of the middle multi-rib beam 22 is an isosceles trapezoid, thereby increasing the area of ​​the thermal insulation material and improving the thermal insulation effect; reducing the concrete mass and reducing the deadweight of the thermal insulation template.

[0035] The connecting bolt 6 can be set to a curved shape or a straight shape. The connecting bolt 6 is located on the rod body inside the multi-rib beam, and a hand hole spiral rib is symmetrically set, and a pad is set at both ends. The pad is located between the nut and the surface of the multi-rib beam to ensure the structural strength and connection reliability of the reserved channel. The insulation board 41 corresponds to the end opening of the connecting bolt 6 to provide an operating space for the fixation of the connecting bolt 6. After the connecting bolt 6 is installed, a flexible insulation material is sprayed on the reserved opening. The number and diameter of the connecting bolt 6 are determined according to the force calculation. Preferably, two adjacent insulation templates are connected by three connecting bolts 6, and the diameter of the connecting bolt 6 is 16mm-40mm.

[0036] like Figure 4 As shown, a first embedded part is arranged inside the load-bearing protrusion 3, and the first embedded part is connected to the structural foundation of the dam body through the tie bar 5, so as to enhance the connection strength between the thermal insulation formwork and the dam body and avoid delamination or peeling. One end of the tie bar 5 is connected to the first embedded part, and the other end is connected to the structural foundation of the dam body. A second embedded part is arranged on the panel 1 corresponding to the load-bearing protrusion 3, and the second embedded part is connected to the support frame through a connecting rod, so as to ensure the stability of the thermal insulation formwork during the pouring process. Preferably, the first embedded part and the second embedded part are both embedded sleeves. The outer end of the second embedded part extends out of the panel 1, and a connecting ear plate is fixedly provided, and the connecting ear plate is connected to the connecting rod.

[0037] The insulation sleeve is configured as a cover structure, and its shape is adapted to the shape of the load-bearing protrusion 3. A threaded sleeve is provided on the insulation sleeve at a position corresponding to the first embedded part; a screw is fixed at the end of the tie rib 5, and the screw is threadedly connected with the threaded sleeve and the first embedded part, respectively, so as to realize the connection between the insulation sleeve and the load-bearing protrusion 3, and the tie rib 5 and the load-bearing protrusion 3 are tied.

[0038] The outer side of the insulation board 41 is flush with the outer side of the multi-rib beam, and can be a prefabricated board or a layer formed by spraying. The insulation board 41 is preferably an XPS insulation material, i.e., an extruded polystyrene insulation board, which is a fully enclosed foaming chemical structure and a honeycomb physical structure, and has the characteristics of being light and high-strength, easy to cut and transport, not easily damaged, and easy to install. The insulation layer is sprayed with a flexible insulation material, and the flexible insulation material can be a foamed polyurethane, which has strong plasticity. The insulation sleeve is preferably a rigid insulation material, such as an extruded polystyrene insulation board.

[0039] The insulation board 41, the insulation layer and the insulation sleeve are connected to each other to ensure that the entire side is completely covered by the insulation structure. The insulation board 41 is attached to the panel 1 and further fixed by insulation nails, which are pre-buried in the panel 1 and the other end of which is arranged in the insulation board 41.

[0040] The template unit is a regular hexagon as a whole. Among them, each set of opposite sides of the panel 1 is respectively provided with mutually matching grooves and tenons to realize the mortise and tenon connection between adjacent template units. The support grid 2 includes six triangular grids arranged at intervals, the peripheral dense rib beams 21 are arranged around the edge of the panel 1, and the middle dense rib beams 22 are arranged radiating around the center of the panel 1. The inner ends of the middle dense rib beams 22 intersect at one point, and the outer ends are connected to the peripheral dense rib beams 21. The load-bearing protrusions 3 are arranged at the intersection position of the support grid 2 and the middle dense rib beams 22, so that the number of load-bearing protrusions 3 meets the bonding strength requirements of the insulation template and the dam body. The template unit adopts a regular hexagonal design. It can align itself under the action of gravity during assembly. No thrust is required in the horizontal direction (lateral), reducing the difficulty of on-site assembly. Compared with a rectangle of the same area, the side length of a regular hexagon can be reduced by 7.5%. The longer the side length, the longer the joint length, the more water-stopping structures and measures are required. Therefore, the regular hexagon can save building materials and improve construction efficiency.

[0041] A construction method for a hexagonal prefabricated composite thermal insulation formwork specifically comprises the following steps:

[0042] Step 1: prefabricate the formwork unit in the factory, transport it to the construction site after it is manufactured, and fix the insulation sleeve on the load-bearing protrusion 3 by screws;

[0043] Step 2: Divide the casting positions into multiple positions according to the casting height, and first assemble the template units of the casting positions at the bottom layer;

[0044] Step 3: Lift the formwork unit to the casting position, first assemble the formwork unit at the bottom of the casting position, and use the grooves and tenons to achieve the initial positioning and splicing of the formwork unit;

[0045] Step 4: Install the tie bar 5, and connect the two ends of the tie bar 5 to the screw rod and the structural foundation of the dam body respectively;

[0046] Step 5: Set up a support frame outside the assembled formwork unit, and connect the support frame to the second embedded part through a connecting rod;

[0047] Step 6: Install the connecting bolts 6 between adjacent template units;

[0048] Step 7: Use the crane and jacking device to adjust the position of the formwork unit to ensure the joint size accuracy and angle requirements, and then tighten the connecting bolts 6, tie bars 5 and connecting rods;

[0049] Step 8: Install the remaining formwork units in sequence from bottom to top until the formwork units of the entire casting position are assembled;

[0050] Step 9: Cast the dam body. After casting, cover with concrete for maintenance.

[0051] Step 10: After the dam body reaches the designed strength, repeat steps 3 to 9 to carry out the construction of the next pouring bin until the construction of all pouring bins is completed.

[0052] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hexagonal prefabricated composite insulation formwork for dam casting, characterized by: It is assembled from interconnected template units, the template units are in the shape of a regular hexagon as a whole, and include a panel (1), a supporting grid (2) and a thermal insulation structure (4); The support grid (2) is arranged on the inner side of the panel (1), and comprises staggered multi-rib beams, wherein the multi-rib beams are divided into peripheral multi-rib beams (21) and middle multi-rib beams (22) according to the arrangement positions; the support grid (2) comprises six triangular grids arranged at intervals; the middle multi-rib beams (22) are radiated from the center of the panel (1) to the surrounding areas, the inner ends of the middle multi-rib beams intersect at a point, and the outer ends are connected to the peripheral multi-rib beams (21); The thermal insulation structure (4) is in contact with the dam body, and comprises a thermal insulation board (41) and a thermal insulation layer; the thermal insulation board (41) is filled in the support grid (2) and is fixedly connected to the inner side surface of the panel (1); the thermal insulation board (41) and the support grid (2) together cover the inner side surface of the panel (1); the thermal insulation layer is coated on the surface of the dense-rib beam.

2. A hexagonal prefabricated composite thermal insulation formwork according to claim 1, characterized in that: It also comprises a load-bearing lug (3), wherein the load-bearing lug (3) is arranged at the intersection position of the support grid (2) and on the middle multi-ribbed beam (22).

3. A hexagonal prefabricated composite thermal insulation formwork according to claim 2, characterized in that: The thermal insulation structure (4) also includes a thermal insulation sleeve, which is arranged on the surface of the load-bearing protrusion (3).

4. The hexagonal prefabricated composite thermal insulation formwork according to claim 1, characterized in that: The size and shape of the support grid (2) are the same as those of the panel (1); and the edge of the peripheral multi-rib beam (21) is flush with the edge of the panel (1).

5. The hexagonal prefabricated composite thermal insulation formwork according to claim 2, characterized in that: A first embedded part is arranged inside the load-bearing protrusion (3), and the first embedded part is connected to the structural foundation of the dam body through a tie bar (5).

6. The hexagonal prefabricated composite thermal insulation formwork according to claim 1, characterized in that: A support frame is set up outside the panel (1); a second embedded part is arranged on the panel (1) corresponding to the load-bearing protrusion (3), and the second embedded part is connected to the support frame via a connecting rod.

7. The hexagonal prefabricated composite thermal insulation formwork according to claim 3, characterized in that: The outer side surface of the insulation board (41) is flush with the outer side surface of the multi-rib beam and is made of XPS insulation material; the insulation layer is sprayed with a flexible insulation material; and the insulation sleeve is made of a rigid insulation material.

8. The hexagonal prefabricated composite thermal insulation formwork according to claim 1, characterized in that: A reserved channel is provided on the peripheral multi-rib beam (21), and a connecting bolt (6) is arranged in the reserved channel, and adjacent template units are connected via the connecting bolt (6).

9. The hexagonal prefabricated composite thermal insulation formwork according to claim 1, characterized in that: Each set of opposite sides of the panel (1) is provided with grooves and tenons that fit together.

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