A construction method of a heat-preservation integrated cantilever balcony plate

Abstract

This invention discloses a construction method for an integrated thermal insulation cantilever balcony slab, belonging to the field of building construction technology. The method includes the following steps: fabricating a precast balcony slab with lifting rings; pre-embedding Z-shaped components on the outside of the structural frame edge beams; installing support poles on the Z-shaped components, with the support plate at the top of the support poles tightly abutting against the upper structural frame edge beams; adjusting the support members so that the support plate of the support members is flush with the top surface of the bottom plate of the Z-shaped components; hoisting the precast balcony slab onto the bottom plate and support plate of the Z-shaped components; adjusting the length of the electric telescopic strut on the web of the Z-shaped components so that it passes through the lifting rings; driving the electric telescopic strut to extend so that the locking block at its end passes through the lifting ring and is locked in place; pouring thermal insulation mortar onto the precast balcony slab until it is flush with the top surface of the structural frame edge beams. This invention eliminates the need for scaffolding, reducing construction difficulty, and, in conjunction with the electric telescopic strut installed at the installation opening of the web of the Z-shaped components, improves the overall structural support.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and in particular relates to a construction method for an integrated thermal insulation cantilever balcony slab. Background Technology

[0002] Balconies are an extension of the interior of a building, where residents can use them to dry clothes, grow potted plants, and breathe fresh air. With the promotion of cantilevered staggered balconies in fourth-generation housing, the requirements for balcony construction quality control measures and load-bearing capacity are becoming increasingly higher. Existing technologies mostly use cast-in-place methods, which require pre-reserved steel bars, making construction complex. In addition, cantilevered balconies are cantilevered structures, which generally require setting up cantilevered steel sections on the floor below or two floors to erect formwork. The above methods are time-consuming and labor-intensive.

[0003] With the development of prefabricated buildings, the advantages of factory prefabrication and on-site assembly have gradually become apparent. Prefabricated cantilevered balcony slabs can be produced in modular form, which greatly reduces the installation cycle and speeds up the construction progress. However, existing prefabricated balcony slabs have problems such as difficulty in setting up steel bars and pouring concrete, heavy weight which makes them prone to cracking, and poor thermal insulation performance, which cannot meet the needs of residents for a good house.

[0004] Therefore, there is an urgent need to design a construction method for cantilevered balcony slabs with integrated insulation to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a construction method for an integrated thermal insulation cantilever balcony slab, which has the advantages of improving the construction efficiency of cantilever balconies, reducing the construction difficulty, and reducing the risk factor of later scaffolding erection, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the specific technical solution of the construction method for an integrated thermal insulation cantilever balcony slab of the present invention is as follows:

[0007] A construction method for an integrated thermal insulation cantilever balcony slab includes the following steps:

[0008] S1. Construct prefabricated balcony slabs with hanging rings;

[0009] S2. Embed the Z-shaped piece on the outside of the structural frame side beam, install the support pole on the Z-shaped piece, adjust the length of the support pole so that the support plate at the top of the support pole is pressed against the upper structural frame side beam.

[0010] S3. Adjust the support component so that the support plate of the support component is flush with the top surface of the bottom plate of the Z-shaped component;

[0011] S4. Hoist the precast balcony slab onto the base plate and support plate of the Z-shaped component, and adjust the length of the electric telescopic strut on the web of the Z-shaped component so that it passes through the lifting ring to temporarily fix the precast balcony slab.

[0012] S5. Drive the electric telescopic strut to extend, so that the end block passes through the hanging ring and is locked in place with the hanging ring, thus securing the precast balcony slab.

[0013] S6. Pour thermal insulation mortar onto the precast balcony slab until it is flush with the top surface of the structural frame edge beam, and then treat the joints.

[0014] S7. Remove the cantilever support frame.

[0015] Furthermore, S1 also includes the following steps:

[0016] S11. Prefabricated balcony floor slabs with ribs are manufactured in advance at the factory;

[0017] S12. While pouring concrete to make ribs, embed lifting rings at intervals on the ribs.

[0018] S13. The insulation board is embedded and fixed in the cavity between the ribs using structural adhesive;

[0019] S14. Pour insulation mortar onto the embedded insulation board until the mortar surface is flush with the top surface of the rib to form a precast balcony slab.

[0020] Furthermore, the precast balcony base slab is made of high-strength steel bars and UHPC concrete.

[0021] Furthermore, in S2, the top plate and vertical plate of the Z-shaped member are flush with the concrete surface of the structural frame edge beam.

[0022] Furthermore, in S2, a support sleeve is screwed to the top of the support column, and the top of the support sleeve is fixedly connected to the support plate. By rotating the support sleeve, the support plate at the top of the sleeve is tightly pressed against the structural frame edge beam of the upper layer.

[0023] Furthermore, an outward-projecting telescopic brace is hinged to the support upright. The end of the outward-projecting telescopic brace away from the support upright is fixedly connected to the support member. A telescopic support rod is set between the support upright and the outward-projecting telescopic brace. One end of the telescopic support rod is hinged to the support upright, and the end of the telescopic support rod away from the support upright is hinged to the outward-projecting telescopic brace. In S3, the telescopic support rod is adjusted to unfold the outward-projecting telescopic brace, thereby adjusting the position of the support member.

[0024] Furthermore, the support component includes a telescopic vertical plate and a support plate. One end of the telescopic vertical plate is fixedly connected to the outward telescopic diagonal rod, and the end of the telescopic vertical plate away from the outward telescopic diagonal rod is fixedly connected to the support plate. The length of the telescopic vertical plate is adjusted so that the support plate of the support component is flush with the top surface of the bottom plate of the Z-shaped component.

[0025] Furthermore, the web of the Z-shaped component has an installation opening relative to the position of the lifting ring. The electric telescopic strut is installed in the installation opening. In S4, the electric telescopic strut is adjusted until the output end of the electric telescopic strut passes through the lifting ring on the precast balcony slab to temporarily position and support the precast balcony slab.

[0026] Furthermore, the output end of the electric telescopic strut is provided with a slot and a block. The block can slide along the slot. A spring is provided in the slot, and the two ends of the spring are fixedly connected to the slot and the block respectively. The block is provided with an inclined surface.

[0027] Furthermore, when the electric telescopic strut extends, the inclined surface of the locking block on the output end of the electric telescopic strut is compressed and contracts when passing through the hanging ring. After passing through the hanging ring, it quickly pops out under the action of the internal spring, forming a mechanical engagement with the hanging ring. Subsequently, the electric telescopic strut is appropriately shortened so that the locking block abuts against the hanging ring to secure the precast balcony slab.

[0028] The present invention has the following advantages:

[0029] (1) The prefabricated part of the cantilever balcony slab can be used as the template for the later cast-in-place part, eliminating the need to erect scaffolding and reducing the difficulty of construction. The reinforcing ribs in the cantilever balcony slab improve the bending stiffness of the balcony slab. At the same time, the lifting rings are pre-embedded in the ribs, which can not only be used as lifting parts, but also cooperate with the electric telescopic struts installed at the web of the Z-shaped part to improve the overall support of the structure.

[0030] (3) By setting up cantilever support frames, the difficulty of workers' work is significantly reduced, scaffolding is avoided on the lower level, and different sizes of insulated balcony panels can be supported by adjusting the cantilever support frames. At the same time, the cantilever support frames are detachable and easy to reuse, which improves the overall construction efficiency.

[0031] (4) By setting electric telescopic struts as reinforcing bars, installation is convenient. The overall strength of the balcony slab is improved by telescopically tightening it, avoiding the need for later steel bar tying. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the construction device of the present invention;

[0033] Figure 2 This is a schematic diagram of the cantilever support frame and Z-shaped component of the present invention;

[0034] Figure 3 This is a schematic diagram of the integrated thermal insulation cantilever balcony slab of the present invention;

[0035] Figure 4 This is a schematic diagram of the output end of the electric telescopic strut of the present invention;

[0036] The markings in the diagram are as follows: 1. Supporting upright; 2. Outwardly projecting telescopic diagonal brace; 3. Support component; 4. Support sleeve; 5. Support plate; 6. Telescopic vertical plate; 7. Support plate; 8. Telescopic strut; 9. Z-shaped component; 10. Structural frame edge beam; 11. Precast balcony slab; 13. Rib plate; 14. Insulation board; 15. Lifting ring; 16. Electric telescopic strut; 17. Slot; 18. Locking block; 19. Spring. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0039] The following is a reference to the appendix. Figure 1 To be continued Figure 4 This invention describes a construction method for an integrated thermal insulation cantilever balcony slab.

[0040] A construction device for an integrated thermal insulation cantilevered balcony slab includes a precast balcony slab 11, a Z-shaped component 9, and an outward-cantilevered support frame;

[0041] The precast balcony slab 11 includes a precast balcony base slab, which serves as the main structural load-bearing layer and permanent formwork of the precast balcony slab 11. Specifically, the precast balcony base slab is made of high-strength steel bars and UHPC concrete. Ribs 13 are integrally formed on the precast balcony base slab to form a grid-like cavity for accommodating the insulation board 14. The insulation board 14 is embedded in the grid-like cavity. Specifically, the insulation board 14 is embedded and fixed in the grid-like cavity formed by the ribs 13 with structural adhesive. Lifting rings 15 are pre-embedded on the ribs 13 and are connected to the hooks of the lifting equipment through the lifting rings 15 to lift the precast balcony slab 11. Insulating mortar is poured on the embedded insulation board 14 until the mortar surface is flush with the top surface of the ribs 13 to form the precast balcony slab 11.

[0042] Specifically, insulation board 14 is a graphite-modified extruded polystyrene board.

[0043] The precast balcony slab 11 is integrally formed with ribs 13, which gives the slab extremely high bending stiffness and durability. High-performance insulation boards 14 are embedded between the ribs 13, realizing a high degree of integration between structure and insulation function. The insulation performance is reliable, reducing thermal bridging from the source. In addition, the precast balcony slab 11 itself also serves as a permanent formwork for the later cast-in-place concrete, completely eliminating the complex and high-risk process of erecting traditional steel pipe scaffolding and formwork under the cantilever structure, simplifying the construction process and reducing manpower and material consumption.

[0044] Z-shaped component 9 is embedded on the outside of the structural frame edge beam 10. Z-shaped component 9 is a key conversion component connecting the cantilever support frame, the precast balcony slab 11 and the structural frame edge beam 10. Z-shaped component 9 provides a support base for the inner side of the cantilever support frame and the precast balcony slab 11. Specifically, the top plate and vertical plate of Z-shaped component 9 are flush with the beam surface of the structural frame edge beam 10.

[0045] The web of the Z-shaped component 9 has an installation opening relative to the lifting ring 15. The electric telescopic strut 16 is installed in the installation opening. The output end of the electric telescopic strut 16 is provided with a slot 17 and a locking block 18. The locking block 18 can slide along the slot 17. A spring 19 is provided in the slot 17. The two ends of the spring 19 are fixedly connected to the slot 17 and the locking block 18 respectively. The locking block 18 is provided with an inclined surface. When the output end of the electric telescopic strut 16 passes through the lifting ring 15, it provides temporary support for the precast balcony slab 11 before pouring. When the electric telescopic strut 16 is mechanically locked to the lifting ring 15 through the locking block 18 at its output end and applies prestress to the balcony slab, becoming a permanent reinforcing rod, it secures the precast balcony slab 11.

[0046] Through the electric telescopic strut 16 and the inclined block 18 and spring 19 mechanism at its output end, automatic engagement and prestressing tensioning with the precast slab lifting ring 15 are achieved. This mechanical connection method replaces the traditional cumbersome steel bar binding and welding, making the connection quality easier to control, effectively improving the connection strength and structural integrity at the cantilever joint, and reducing the risk of cracking.

[0047] The cantilever support frame includes a support column 1, the bottom of which is mounted on a Z-shaped component 9. The support column 1 is the vertical load-bearing component of this cantilever support frame, transferring the load to the Z-shaped component 9 and the structural frame side beam 10. Specifically, the support column 1 and the Z-shaped component 9 are detachably connected. A support sleeve 4 is screwed onto the support column 1, and a support plate 5 is fixedly connected to the support sleeve 4. By rotating the support sleeve 4, the vertical height of the support plate 5 can be finely adjusted, so that the support plate 5 at the top of the sleeve tightly abuts against the structural frame side beam 10 of the upper layer. Specifically, the support column 1 has a threaded groove, and the inner wall of the support sleeve 4 has a threaded groove. The support column 1 is screwed to the support sleeve 4 through the threaded groove.

[0048] An outward-projecting telescopic brace 2 is hinged to the support upright 1. The end of the outward-projecting telescopic brace 2 away from the support upright 1 is fixedly connected to the support member 3. A telescopic support rod 8 is provided between the support upright 1 and the outward-projecting telescopic brace 2. One end of the telescopic support rod 8 is hinged to the support upright 1, and the end of the telescopic support rod 8 away from the support upright 1 is hinged to the outward-projecting telescopic brace 2. Adjusting the telescopic support rod 8 unfolds the outward-projecting telescopic brace 2, thereby adjusting the position of the support member 3.

[0049] The support component 3 includes a telescopic vertical plate 6 and a support plate 7. One end of the telescopic vertical plate 6 is fixedly connected to the outward telescopic diagonal rod 2, and the other end of the telescopic vertical plate 6 away from the outward telescopic diagonal rod 2 is fixedly connected to the support plate 7. The support plate 7 provides a support plane. The telescopic vertical plate 6 is used to finely adjust the height of the support plate 7. By adjusting the length of the telescopic vertical plate 6, the support plate 7 of the support component 3 is made flush with the top surface of the bottom plate of the Z-shaped component 9.

[0050] The adjustable cantilever support frame allows it to flexibly adapt to different floor heights and balcony cantilever dimensions. Furthermore, the cantilever support frame is detachable and can be reused on different floors or projects, effectively reducing the cost of tool-based investment.

[0051] At the same time, by eliminating the need to erect cantilevered scaffolding on the lower level for high-altitude formwork operations, a large number of high-altitude and high-risk tasks are transformed into assembly operations on the ground or floor level, fundamentally reducing the probability of safety accidents.

[0052] A construction method for an integrated thermal insulation cantilever balcony slab, using the aforementioned construction device, further includes the following steps:

[0053] S1. Fabricate a precast balcony slab 11 with hanging rings 15;

[0054] S11. Prefabricated balcony floor slabs with ribs 13 are manufactured in advance at the factory;

[0055] S12. While pouring concrete to make rib plate 13, pre-embed lifting rings 15 at intervals on rib plate 13.

[0056] S13. The insulation board 14 is embedded and fixed in the cavity between the ribs 13 using structural adhesive;

[0057] S14. Pour insulation mortar onto the embedded insulation board 14 until the mortar surface is flush with the top surface of the rib 13 to form a precast balcony slab 11.

[0058] By adopting a factory prefabrication and on-site assembly model, the prefabricated balcony panels 11 are produced in modular form in the factory and can be carried out simultaneously with the on-site main structure construction, which greatly reduces on-site wet work and curing time, thereby significantly accelerating the overall construction progress.

[0059] S2. Embed the Z-shaped part 9 on the outside of the structural frame side beam 10, and make the top plate and vertical plate of the Z-shaped part 9 flush with the concrete surface of the structural frame side beam 10. Install the support rod 1 on the Z-shaped part 9, adjust the length of the support rod 1, and make the support plate 5 at the top of the support rod 1 press against the upper structural frame side beam 10.

[0060] Specifically, the top of the support pole 1 is screwed with a support sleeve 4. By rotating the support sleeve 4, the support plate 5 at the top of the sleeve is tightly pressed against the structural frame side beam 10 of the upper layer.

[0061] S3. Adjust the support component 3 so that the support plate 7 of the support component 3 is flush with the top surface of the bottom plate of the Z-shaped component 9.

[0062] Specifically, adjust the telescopic support rod 8 to unfold the outward telescopic diagonal rod 2, thereby adjusting the position of the support member 3 and adjusting the length of the telescopic vertical plate 6 so that the support plate 7 of the support member 3 is flush with the top surface of the bottom plate of the Z-shaped member 9.

[0063] S4. Hoist the precast balcony slab 11 onto the bottom plate of the Z-shaped component 9 and the supporting plate 7, and adjust the length of the electric telescopic support rod 16 on the web of the Z-shaped component 9 so that it passes through the lifting ring 15 to temporarily fix the precast balcony slab 11.

[0064] Specifically, the precast balcony slab 11 is hoisted onto the base plate of the Z-shaped component 9 and the supporting plate 7 by hooking the hook and lifting ring 15 of the lifting equipment.

[0065] Specifically, the electric telescopic strut 16 is adjusted until its output end passes through the hanging ring 15 on the precast balcony slab 11 to temporarily position and support the precast balcony slab 11.

[0066] S5. Drive the electric telescopic support rod 16 to extend, so that the end block 18 passes through the hanging ring 15 and is locked in place with the hanging ring 15, so that the prefabricated balcony slab 11 is fastened.

[0067] Specifically, when the electric telescopic strut 16 extends, the inclined surface of the locking block 18 on the output end of the electric telescopic strut 16 is compressed and contracted when passing through the hanging ring 15. After passing through the hanging ring 15, it quickly pops out under the action of the internal spring 19 and forms a mechanical engagement with the hanging ring 15. Then, the electric telescopic strut 16 is appropriately shortened so that the locking block 18 abuts against the hanging ring 15 to fasten the precast balcony slab 11.

[0068] S6. Pour thermal insulation mortar on the precast balcony slab 11 until it is flush with the top surface of the structural frame edge beam 10, and perform joint treatment.

[0069] Specifically, the thermal insulation mortar is a micro-expansion thermal insulation mortar.

[0070] S7. Remove the cantilever support frame.

[0071] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A construction method of a thermal insulation integrated cantilever balcony slab, characterized in that, Includes the following steps: S1. Construct prefabricated balcony slabs with hanging rings; S2. Embed the Z-shaped piece on the outside of the structural frame side beam, install the support pole on the Z-shaped piece, adjust the length of the support pole so that the support plate at the top of the support pole is pressed against the upper structural frame side beam. S3. Adjust the support component so that the support plate of the support component is flush with the top surface of the bottom plate of the Z-shaped component; S4. Hoist the precast balcony slab onto the base plate and support plate of the Z-shaped component, and adjust the length of the electric telescopic strut on the web of the Z-shaped component so that it passes through the lifting ring to temporarily fix the precast balcony slab. S5. Drive the electric telescopic strut to extend, so that the end block passes through the hanging ring and is locked in place with the hanging ring, thus securing the precast balcony slab. S6. Pour thermal insulation mortar onto the precast balcony slab until it is flush with the top surface of the structural frame edge beam, and then treat the joints. S7. Remove the cantilevered support frame; An outward-projecting telescopic brace is hinged to the support column. The end of the outward-projecting telescopic brace away from the support column is fixedly connected to the support member. A telescopic support rod is provided between the support column and the outward-projecting telescopic brace. One end of the telescopic support rod is hinged to the support column, and the end of the telescopic support rod away from the support column is hinged to the outward-projecting telescopic brace. In S3, the telescopic support rod is adjusted to unfold the outward-projecting telescopic brace, thereby adjusting the position of the support member. The support component includes a telescopic vertical plate and a support plate. One end of the telescopic vertical plate is fixedly connected to the outward telescopic diagonal bar, and the end of the telescopic vertical plate away from the outward telescopic diagonal bar is fixedly connected to the support plate. The length of the telescopic vertical plate is adjusted so that the support plate of the support component is flush with the top surface of the bottom plate of the Z-shaped component. The web of the Z-shaped piece has an installation opening relative to the position of the lifting ring. The electric telescopic strut is installed in the installation opening. In S4, the electric telescopic strut is adjusted until the output end of the electric telescopic strut passes through the lifting ring on the precast balcony slab to temporarily position and support the precast balcony slab. The output end of the electric telescopic strut is provided with a slot and a block. The block can slide along the slot. A spring is provided in the slot. The two ends of the spring are fixedly connected to the slot and the block respectively. The block is provided with an inclined surface. When the electric telescopic strut extends, the inclined plate of the locking block on the output end of the electric telescopic strut is compressed and contracts when passing through the hanging ring. After passing through the hanging ring, it quickly pops out under the action of the internal spring and forms a mechanical engagement with the hanging ring. Then the electric telescopic strut shortens until the locking block abuts against the hanging ring to generate a pre-tightening force to secure the precast balcony slab.

2. The construction method of the integrated cantilevered balcony slab according to claim 1, characterized in that, S1 also includes the following steps: S11. Prefabricated balcony floor slabs with ribs are manufactured in advance at the factory; S12. While pouring concrete to make ribs, embed lifting rings at intervals on the ribs. S13. The insulation board is embedded and fixed in the cavity between the ribs using structural adhesive; S14. Pour insulation mortar onto the embedded insulation board until the mortar surface is flush with the top surface of the rib to form a precast balcony slab.

3. The construction method for integrated thermal insulation cantilevered balcony slabs according to claim 2, characterized in that, The precast balcony floor slab is made of high-strength steel bars and UHPC concrete.

4. The construction method for integrated thermal insulation cantilever balcony slabs according to claim 1, characterized in that, In S2, the top and vertical plates of the Z-shaped member are flush with the concrete surface of the structural frame edge beams.

5. The construction method for integrated thermal insulation cantilever balcony slabs according to claim 1, characterized in that, In S2, a support sleeve is screwed to the top of the support column. The top of the support sleeve is fixedly connected to the support plate. By rotating the support sleeve, the support plate at the top of the sleeve is tightly pressed against the side beam of the upper structural frame.

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