Assembly type large cantilever prefabricated balcony without inclined strut

Abstract

The utility model relates to the technical field of assembly type buildings, in particular to an assembly type large cantilever prefabricated balcony without an inclined strut, which can be assembled and mounted on the outer side of a building main body and comprises a plurality of combined cantilever beams, a plurality of inclined struts and a plurality of large cantilever beams, the two ends of the edge beam are connected to the ends, away from the building body, of the two adjacent combined cantilever beams correspondingly; wherein the combined cantilever beam comprises a steel-concrete pressure-bearing beam, a pull-bearing rod and a plurality of connecting rods; one end of the steel-concrete pressure-bearing beam is connected with a building main body, and the other end is connected with the boundary beam; the bearing rod is located above the steel-concrete pressure-bearing beam, and one end of the bearing rod is used for being connected with a building body. For any connecting rod, one end of the connecting rod is connected to the pull-bearing rod, and the other end of the connecting rod is connected to a steel structure in the steel-concrete pressure-bearing beam; the bearing pull rod and the connecting rod serve as a handrail structure of the assembly type large cantilever prefabricated balcony without the inclined strut at the same time. The large-cantilever non-inclined-strut garden balcony can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled buildings, in particular to an assembled large cantilevered prefabricated balcony without diagonal bracing. Background Art

[0002] The fourth generation of housing buildings is characterized by the fact that each house is equipped with an extended garden balcony. The garden balconies are usually staggered on adjacent floors, that is, for each garden balcony, the space above it reaches the height of two floors (about 6 meters), and the extension of the balcony is usually 6 to 7 meters. Such extended large balconies provide residents with a large amount of outdoor space and are deeply loved by residents. On the other hand, by planting green plants on the garden balcony, the green area of ​​the fourth generation of housing buildings can be greatly increased, which can improve the living experience.

[0003] However, on the one hand, the cantilever length of the garden balcony is large, and on the other hand, the green plants planted on the garden balcony, the garden soil required for planting, and the moisture contained in the soil also impose a large amount of load on the garden balcony. Due to the mechanical properties of the concrete structure, it is often necessary to add diagonal braces at the bottom of the garden balcony to increase the bearing capacity of the garden balcony.

[0004] However, the setting of diagonal braces will, on the one hand, greatly reduce the visual effect of the balcony and reduce the residents' living experience; on the other hand, it will also affect the lighting of the garden balcony and even the interior. In addition, the setting of diagonal braces also brings great trouble to the construction of the garden balcony.

[0005] To this end, it is urgently necessary to propose a new prefabricated balcony structure to build a large cantilevered balcony without diagonal braces while ensuring safety, so as to improve the quality of the garden balcony of the fourth-generation housing buildings and the usage experience of residents. Utility Model Content

[0006] The purpose of the utility model is to provide an assembled large cantilevered prefabricated balcony without diagonal braces, which can at least partially overcome the above-mentioned technical problems, realize the large cantilevered balcony without diagonal braces while ensuring safety, and improve the quality of the garden balcony of the fourth-generation housing building and the residents' usage experience.

[0007] The utility model provides an assembled large cantilever prefabricated balcony without diagonal bracing, which can be assembled and installed on the outside of a building main body, comprising: a plurality of combined cantilever beams, and one end of the plurality of combined cantilever beams are all installed at the same elevation position of the building main body; side beams, the two ends of the side beams are respectively connected to one end of two adjacent combined cantilever beams away from the building main body; a balcony slab, one end of the balcony slab is overlapped on the cross beam of the building main body, and the other end of the balcony slab is overlapped on the side beam; or the two ends of the balcony slab are respectively overlapped on the two adjacent combined cantilever beams;

[0008] Among them, the combined cantilever beam includes a steel-concrete pressure beam, a tension rod and a plurality of connecting rods; one end of the steel-concrete pressure beam is used to connect the building body, and the other end is used to connect the side beam; the tension rod is located above the steel-concrete pressure beam, and one end of the tension rod is used to connect the building body; for any of the connecting rods, one end of the connecting rod is connected to the tension rod, and the other end is connected to the steel structure in the steel-concrete pressure beam; the tension rod and the connecting rod simultaneously serve as the railing structure of the assembled large cantilever prefabricated balcony without diagonal bracing.

[0009] Furthermore, the tension rods are arranged horizontally, and at least one of the connecting rods is arranged obliquely.

[0010] Furthermore, the distance between the tension rod and the upper surface of the steel-concrete pressure beam is 0.8m to 1.4m, and the beam height of the steel-concrete pressure beam is 0.3m to 0.8m.

[0011] Furthermore, the materials of the tension rods and the connecting rods are both high-strength steel, and the concrete of the steel-concrete compression beam is high-performance concrete.

[0012] Furthermore, the balcony slab includes a plurality of prefabricated support-free floor slabs; for any of the prefabricated support-free floor slabs, one end of the prefabricated support-free floor slab is overlapped on the crossbeam of the building main body, and the other end is overlapped on the side beam, and the plurality of prefabricated support-free floor slabs are adjacently arranged one by one along the length direction of the side beam; or, for any of the prefabricated support-free floor slabs, both ends of the prefabricated support-free floor slab are respectively overlapped on a combined cantilever beam, and the plurality of prefabricated support-free floor slabs are adjacently arranged one by one along the length direction of the combined cantilever beam.

[0013] Furthermore, the balcony slab includes a plurality of support-free base plates and cast-in-place concrete; for any of the support-free base plates, one end of the support-free base plate is overlapped on the crossbeam of the building main body, and the other end is overlapped on the side beam, and the plurality of support-free base plates are arranged adjacent to each other one by one along the length direction of the side beam; or, for any of the support-free base plates, both ends of the support-free base plate are respectively overlapped on a combined cantilever beam, and the plurality of support-free base plates are arranged adjacent to each other one by one along the length direction of the combined cantilever beam; the support-free base plate is selected from one or more of a truss steel bar floor deck, a support-free composite slab, and a corrugated corrugated steel plate; the cast-in-place concrete is cast on the support-free base plate.

[0014] Furthermore, a connecting head is provided at one end of the steel-concrete pressure-bearing beam and the tension-bearing rod connected to the main building body, and a connecting seat corresponding to each of the connecting heads is pre-buried in the main building body, and the steel-concrete pressure-bearing beam and the tension-bearing rod are connected to the main building body through the corresponding connecting heads.

[0015] Furthermore, for any of the connecting heads, the connecting head includes a horizontally opened receiving hole, and the axis of the receiving hole is perpendicular to the length direction of the steel-concrete compression beam or tension rod corresponding to the connecting head; the connecting seat is located on the shear wall or column of the building body, and the connecting seat includes a slide groove arranged in the horizontal direction, and a locking pin is arranged in the slide groove; when any connecting head is inserted into the corresponding connecting seat, the locking pin corresponding to the connecting head can be inserted into the receiving hole and lock the connecting head.

[0016] Furthermore, a guide portion is provided at one end of the connecting head inserted into the building main body, and a spring is also provided in the slide groove, one end of the spring is connected to the slide groove, and the other end of the spring is connected to the locking pin; when any connecting head is inserted into the corresponding connecting seat, the guide portion of the connecting head can push the locking pin in the connecting seat, so that the locking pin slides in the slide groove and compresses the spring; when the connecting head continues to be inserted until the position of the receiving hole corresponds to the position of the locking pin, the spring can push the locking pin to slide in the slide groove and be inserted into the receiving hole.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0018] 1. The embodiment of the present disclosure provides an assembled prefabricated balcony with a large cantilever without diagonal braces. The prefabricated balcony has a tensile structure with good tensile strength at the upper part and a reinforced concrete structure with good compressive strength at the lower part, which is consistent with the force characteristics of the cantilever beam. In addition, an inclined connecting rod is arranged between the tension rod and the steel-concrete pressure beam. These inclined connecting rods can well transmit the shear force between the tension rod and the steel-concrete pressure beam, so that the steel-concrete pressure beam, the tension rod and the connecting rod are closely combined to form a combined cantilever beam, which can achieve a large cantilever without diagonal braces. The tension rod and the connecting rod above the steel-concrete pressure beam not only serve as the upper tension rod, but also serve as the railing structure of the garden balcony. The diagonal braces required for the garden balcony are eliminated, and the formwork process required for setting the cast-in-place diagonal braces can be directly eliminated, which greatly improves the construction time required for building the garden balcony. Alternatively, the difficult assembly and installation work of "the installation accuracy of the connection nodes between the balcony and the building body, the connection nodes between the balcony and the diagonal braces, and the connection nodes between the diagonal braces and the building body" when setting the prefabricated diagonal braces can be directly avoided.

[0019] 2. The prefabricated large cantilevered balcony without diagonal bracing provided in the embodiment of the present disclosure greatly reduces the difficulty of lifting compared with the use of a whole balcony slab. In addition, it also reduces the difficulty of prefabrication of the balcony slab and the loss of transportation;

[0020] 3. The embodiment of the present disclosure provides an assembled prefabricated balcony with a large cantilever without diagonal bracing. Through this prefabrication + cast-in-place mode, when the combined cantilever beam and the side beam have been set, there is no need to support the cast-in-place concrete balcony slab with a formwork. After the casting is completed, the installation of the next garden balcony can be carried out without waiting for the cast-in-place concrete to be cured. In addition, the difficult lifting operation required for the use of a whole prefabricated balcony slab is avoided. The corrugated corrugated steel plate is used as the support-free bottom plate. Therefore, the corrugated corrugated steel plate not only serves as a formwork for cast-in-place concrete, but also can provide a rigid waterproof layer for the assembled prefabricated balcony without support, so that the assembled prefabricated balcony without support obtained by the prefabrication + cast-in-place mode has better anti-leakage ability. Before the casting operation is carried out, there is no need to specially build a formwork to form the required cavity for casting. When the assembled prefabricated balcony without support is installed on the outside of the existing building body, the operation process is simple and the amount of manual construction is small.

[0021] 4. The embodiment of the present disclosure provides an assembled large cantilevered prefabricated balcony without diagonal bracing, which can reduce the difficulty of assembly and can achieve precise installation without manual detailed adjustment of the position of the combined cantilever beam. It can also achieve rapid plug-in, installation and fixation of the combined cantilever beam, which is conducive to shortening the assembly and installation period. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0023] Figure 1 The three-dimensional structure diagram of the fourth-generation housing building with garden balconies supported by diagonal braces is shown in the figure, wherein only a corner of the building with garden balconies on some floors is shown;

[0024] Figure 2 The figure is a schematic diagram of a three-dimensional structure of an assembled large cantilevered prefabricated balcony without diagonal bracing assembled and installed on the outside of a building body according to an embodiment of the utility model, wherein only a corner of a garden balcony is provided on some floors of the building;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of an assembled large cantilevered prefabricated balcony without diagonal bracing according to an embodiment of the utility model;

[0026] Figure 4 A longitudinal sectional view of an assembled large cantilevered prefabricated balcony without diagonal bracing according to an embodiment of the utility model, wherein the sectional plane is perpendicular to the length direction of the steel-concrete pressure beam, and is used to show that a plurality of prefabricated support-free floor slabs are arranged one by one adjacently along the length direction of the edge beam;

[0027] Figure 5Another longitudinal sectional view of an assembled large cantilevered prefabricated balcony without diagonal bracing according to an embodiment of the utility model, wherein the sectional plane is perpendicular to the length direction of the steel-concrete pressure beam, and is used to show that a plurality of support-free bottom plates are arranged one by one adjacently along the length direction of the edge beam, and cast-in-place concrete is poured on the top thereof to form a balcony slab;

[0028] Figure 6 Based on Figure 4 A partial enlarged view of area A is shown to show the connection head provided at one end of the tension rod connected to the building body;

[0029] Figure 7 It is a structural schematic diagram of the connection seat embedded in the main body of the building;

[0030] Marks and corresponding parts names in the attached drawings:

[0031] 1-building body; 11-connecting seat; 111-slide; 112-locking pin; 113-spring; 21-combined cantilever beam; 211-steel-concrete pressure beam; 2111-extension part; 212-tension rod; 213-connecting rod; 214-connecting head; 2141-receiving hole; 2142-guide part; 22-side beam; 23-balcony slab; 231-prefabricated support-free floor slab; 232-support-free bottom slab; 233-cast-in-place concrete; 5-garden balcony; 6-diagonal brace. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the embodiments and drawings. The schematic implementation mode and description of the utility model are only used to explain the utility model and are not intended to limit the utility model. It should be noted that the utility model is already in the actual development and use stage.

[0033] like Figure 1 As shown, in the existing fourth-generation housing buildings, each house is usually equipped with an extended garden balcony 5, and the garden balconies 5 are usually staggered on adjacent floors, that is, for each garden balcony 5, the height of the space above it reaches the floor height of two floors (about 6 meters), and the extension of the garden balcony 5 is usually 6 to 7 meters. Such an extended large balcony provides residents with a large amount of outdoor space and is deeply loved by residents. On the other hand, by planting green plants on the garden balcony 5, the greening area of ​​the fourth-generation housing building can be greatly increased, and the living experience can be improved. However, such a garden balcony 5 has a large cantilever length and needs to bear a large load after planting green plants. Due to the mechanical properties of the concrete structure, it is often necessary to add a diagonal brace 6 (such as Figure 1As shown, the diagonal brace usually extends outward from the load-bearing column position of the floor slab of the next layer of the garden balcony 5 to the bottom of the garden balcony 5, thereby forming a diagonal support) to increase the bearing capacity of the garden balcony 5. However, the setting of the diagonal brace 6, on the one hand, will greatly reduce the visual effect of the garden balcony 5 (external appearance and visual perception from the outside of the garden balcony 5), affect the vision of the residents on the garden balcony 5, and reduce the residents' living experience. On the other hand, it also affects the lighting of the garden balcony 5 and even the interior. In addition, the setting of the diagonal brace 6 also brings great trouble to the construction of the garden balcony 5 (for example, when the garden balcony 5 is constructed by cast-in-place operation, a large amount of steel bar binding operation is required at the connection between the diagonal brace 6 and the balcony. On the one hand, the diagonal brace 6 needs to be supported by formwork, which is more difficult. On the other hand, it also increases the difficulty of the casting operation; even if an assembled building is used, when installing the prefabricated garden balcony 5, it is necessary to take into account the installation accuracy of the connection node between the balcony and the building body, the connection node between the balcony and the diagonal brace 6, and the connection node between the diagonal brace 6 and the main body of the building, making the assembled operation difficult to install). The utility model proposes an assembled large cantilevered prefabricated balcony without diagonal braces, which can build a large cantilevered balcony without diagonal braces under the premise of ensuring safety, thereby improving the quality of the garden balcony 5 of the fourth-generation housing building and the usage experience of the residents, and is convenient for construction operations.

[0034] Embodiment 1:

[0035] like Figure 2 , Figure 3 As shown, the present embodiment provides an assembled large cantilevered prefabricated balcony without diagonal bracing, which can be assembled and installed on the outside of the building body 1, and is characterized by comprising:

[0036] A plurality of combined cantilever beams 21, and one end of the plurality of combined cantilever beams 21 are all installed at the same elevation position of the building body 1;

[0037] Side beams 22, both ends of which are respectively connected to ends of two adjacent combined cantilever beams 21 away from the building body 1;

[0038] A balcony slab 23, one end of the balcony slab 23 is overlapped on the cross beam of the building body 1, and the other end of the balcony slab 23 is overlapped on the side beam 22; or, both ends of the balcony slab 23 are overlapped on two adjacent combined cantilever beams 21 respectively;

[0039] The combined cantilever beam 21 includes a steel-concrete compression beam 211, a tension rod 212 and a plurality of connecting rods 213;

[0040] One end of the steel-concrete pressure beam 211 is used to connect to the building body 1, and the other end is used to connect to the side beam 22;

[0041] The tension rod 212 is located above the steel-concrete pressure beam 211, and one end of the tension rod 212 is used to connect to the building body 1;

[0042] For any of the connecting rods 213, one end of the connecting rod 213 is connected to the tension rod 212, and the other end is connected to the steel structure in the steel-concrete compression beam 211; the tension rod 212 and the connecting rod 213 simultaneously serve as the railing structure of the assembled large cantilever prefabricated balcony without diagonal bracing.

[0043] Preferably, the tension rod 212 is horizontally arranged, and at least one of the connecting rods 213 is inclinedly arranged.

[0044] More specifically, the distance between the tension rod 212 and the upper surface of the steel-concrete pressure beam 211 is 0.8m to 1.4m, the beam height of the steel-concrete pressure beam 211 is 0.3m to 0.8m, and the height of the combined cantilever beam 21 is greater than 1.5m. The tension rod 212 and the connecting rod 213 are both made of high-strength steel, and the concrete used to prefabricate the steel-concrete pressure beam 211 is high-performance concrete.

[0045] Taking two combined cantilever beams 21 as an example, the above-mentioned assembled large cantilever prefabricated balcony without diagonal bracing can be assembled and installed on the outside of the existing building body 1 according to the following procedures to form a garden balcony 5 configured in the fourth-generation housing building:

[0046] The two combined cantilever beams 21 are hoisted to the preset positions on the building main body 1, and then the side beams 22 are hoisted to the ends of the two combined cantilever beams 21 away from the building main body 1, and then the balcony panels 23 are hoisted and installed to complete the installation of the prefabricated balcony without support.

[0047] Based on this, the utility model provides an assembled prefabricated balcony with a large cantilever without diagonal bracing, which is matched with the force characteristics of the cantilever beam (tension at the top and compression at the bottom) by setting a tensile structure with good tensile strength at the top and a reinforced concrete structure with good compressive strength at the bottom, and has inclined connecting rods 213 between the tensile rods 212 and the steel-concrete pressure beam 211. These inclined connecting rods 213 can well transmit the shear force between the tensile rods 212 and the steel-concrete pressure beam 211, so that the steel-concrete pressure beam 211, the tensile rods 212 and the connecting rods 213 are tightly combined to form a combined cantilever beam 21. Moreover, the beam height of the combined cantilever beam 21 is greater than 1.5m. According to the cantilever beam design calculation principle of "cantilever length is less than or equal to 5 times of beam height", it can be known that in the embodiment of the utility model, the cantilever length of the combined cantilever beam 21 can reach more than 7.5m, which meets the requirement that the garden balcony 55 of the fourth-generation residential building extends outward by 6 to 7 meters (that is, the embodiment of the utility model provides an assembled large cantilever prefabricated balcony without diagonal braces, and its combined cantilever beam 21 can achieve a cantilever length of more than 7.5m without diagonal braces 6 under the premise of ensuring safety). Furthermore, the assembled large cantilever prefabricated balcony without diagonal braces built by using the combined cantilever beam 21 in combination with the side beam 22 and the balcony slab 23 can achieve a cantilever length of 7.5m without diagonal braces 6, thereby improving the quality of the garden balcony 5 of the fourth-generation residential building and the residents' usage experience. Because it eliminates the diagonal brace 6 required for the garden balcony 5, the formwork process required for setting the cast-in-place diagonal brace 6 can be directly eliminated, greatly improving the construction time required for building the garden balcony 5. Or, it can directly avoid the difficult assembly and installation work of "needing to take into account the installation accuracy of the connection nodes between the balcony and the building body, the connection nodes between the balcony and the diagonal brace 6, and the connection nodes between the diagonal brace 6 and the building body" when setting the prefabricated diagonal brace 6.

[0048] It is worth noting that, although the combined cantilever beam 21 has a beam height of more than 1.5m, it is completely different from the conventional integral steel-concrete cantilever beam with the same beam height. Specifically, the conventional integral steel-concrete cantilever beam with a beam height of 1.5m will directly form a large shielding entity on the side of the garden balcony 5, which will seriously affect the lighting and vision of the garden balcony 5 (which has far exceeded the impact of setting the diagonal brace 6). However, the combined cantilever beam 21 provided in the embodiment of the utility model has a steel-concrete structure with a partial height of only 0.3m to 0.8m, which belongs to the conventional beam height setting in residential buildings, and the tension rod 212 and the connecting rod 213 above the steel-concrete compression beam 211 are used as upper tension rods and also serve as the railing structure of the garden balcony 5 (the height from the upper surface of the tension rod 212 to the upper surface of the balcony plate 23 is 1m to 1.2m, which belongs to the height setting of the conventional railing). Moreover, this combined cantilever beam 21 has only a steel-concrete solid at the lower part and a "frame-type" transparent structure composed of rods at the upper part, which achieves a lightweight structure and does not bring a heavy burden to the lifting equipment during assembly and installation; it can also save the diagonal brace 6 and reduce the load-bearing burden of the building body 1; at the same time, the tension rod 212 and the connecting rod 213 can facilitate the connection of the sling during assembly and installation.

[0049] It should be understood that, usually, the holes of the "frame-type" transparent structure formed by the tension rods 212 and the connecting rods 213 are relatively large. For this reason, in the combined cantilever beam 21, protective components are usually provided in the holes formed between the tension rods 212, the connecting rods 213 and the steel-concrete pressure beam 211, so as to prevent people and objects from falling from these holes. Specifically, the protective components can be perforated plates, thin rods, glass plates, etc. It should be understood that in order to ensure the long-term safety and reliability of the assembled large cantilever prefabricated balcony without diagonal braces, the tension rods 212 and the connecting rods 213 should also have anti-rust and anti-corrosion properties. Accordingly, a protective railing is also provided above the side beam 22 to reduce the later workload after the installation of the assembled large cantilever prefabricated balcony without diagonal braces.

[0050] Embodiment 2:

[0051] like Figure 4 As shown, this embodiment is based on the embodiment 1, and the difference is that: this embodiment provides an assembled large cantilevered prefabricated balcony without diagonal bracing, and its balcony plate 23 is formed by splicing a plurality of prefabricated support-free floor plates 231, specifically:

[0052] The balcony slab 23 comprises a plurality of prefabricated support-free slabs 231;

[0053] For any of the prefabricated support-free floor slabs 231, one end of the prefabricated support-free floor slab 231 is overlapped on the crossbeam of the building main body 1, and the other end is overlapped on the side beam 22, and multiple prefabricated support-free floor slabs 231 are adjacently arranged one by one along the length direction of the side beam 22; or, for any of the prefabricated support-free floor slabs 231, both ends of the prefabricated support-free floor slab 231 are respectively overlapped on a combined cantilever beam 21, and multiple prefabricated support-free floor slabs 231 are adjacently arranged one by one along the length direction of the combined cantilever beam 21.

[0054] Based on this, compared with using a whole balcony slab 23, the difficulty of lifting is greatly reduced. In addition, the difficulty of prefabrication of the balcony slab 23 and the loss of transportation are also reduced. Figure 4 As shown, whether it is an integral or spliced ​​prefabricated support-free floor slab 231, it is difficult to cover the connecting rod 213 at the edge portion close to the connecting rod 213, so that a step-shaped sanitary dead corner is formed outside the connecting rod 213, that is, between the balcony slab 23 and the steel-concrete pressure beam 211. Moreover, due to the presence of the splicing seam, the waterproof performance of the spliced ​​balcony slab 23 is reduced, and it is easy to leak downward.

[0055] Embodiment 3:

[0056] like Figure 5 As shown, this embodiment is based on embodiment 1, and the difference is that: this embodiment provides an assembled large cantilevered prefabricated balcony without diagonal bracing, and its balcony plate 23 adopts a prefabricated + cast-in-place mode, specifically:

[0057] The balcony slab 23 includes a plurality of support-free base plates 232 and cast-in-place concrete 233;

[0058] For any of the free-support bottom plates 232, one end of the free-support bottom plate 232 is overlapped on the cross beam of the building main body 1, and the other end is overlapped on the side beam 22, and multiple free-support bottom plates 232 are arranged one by one adjacent to each other along the length direction of the side beam 22; or, for any of the free-support bottom plates 232, both ends of the free-support bottom plate 232 are overlapped on a combined cantilever beam 21 respectively, and multiple free-support bottom plates 232 are arranged one by one adjacent to each other along the length direction of the combined cantilever beam 21;

[0059] The support-free bottom plate 232 is selected from one or more of a truss steel bar floor deck, a support-free composite plate, and a corrugated profiled steel plate;

[0060] The cast-in-place concrete 233 is poured on the support-free base plate 232 .

[0061] Based on this, the present embodiment provides an assembled large cantilevered prefabricated balcony without diagonal bracing. Through this prefabrication + cast-in-place mode, when the combined cantilever beam 21 and the side beam 22 have been set, there is no need to support the cast-in-place concrete balcony slab 23 (avoiding high formwork operations), and the installation operation of the next garden balcony 5 can be carried out after the pouring is completed, without waiting for the curing of the cast-in-place concrete 233. In addition, the balcony slab 23 obtained by this prefabrication + cast-in-place mode in the present embodiment has good integrity while avoiding the difficult hoisting operation required by using a whole prefabricated balcony slab 23. Figure 5 What is shown is the situation that corrugated corrugated steel plate is used as the support-free base plate 232. Therefore, the corrugated corrugated steel plate not only serves as a template for cast-in-place concrete 233, but also can provide a rigid waterproof layer for the assembled prefabricated balcony with large cantilever without diagonal braces, so that the assembled prefabricated balcony with large cantilever without diagonal braces obtained by the prefabrication + cast-in-place mode has better anti-leakage ability.

[0062] It should be understood that if Figure 6 As shown, in order to facilitate the pouring of concrete on the support-free bottom plate 232 and thus form an integral concrete balcony slab 23, an extension portion 2111 is also extended upward at the upper part of the steel-concrete pressure beam 211, away from the balcony slab 23. Correspondingly, an extension portion 2111 is also extended upward at the upper part of the side beam 22, away from the balcony slab 23 (not shown in the figure). Thus, after hoisting the combined cantilever beam 21, the side beam 22 and the support-free bottom plate 232, the support-free bottom plate 232 and the extension portion 2111 together constitute the mold cavity required for pouring the cast-in-place concrete 233. Furthermore, before the pouring operation is carried out, there is no need to specially build a formwork to form the mold cavity required for pouring. This makes it possible to install the assembled large cantilever prefabricated balcony without diagonal bracing on the outside of the existing building body 1 with simple operation procedures and small amount of manual construction.

[0063] Embodiment 4:

[0064] like Figure 6 , Figure 7 As shown, this embodiment is based on Embodiment 1, and the difference lies in that: this embodiment provides an assembled large cantilever prefabricated balcony without diagonal bracing, in which a connecting head 214 is provided at one end of the steel-concrete pressure beam 211 and the tension rod 212 connected to the building body 1, and a connecting seat 11 corresponding to each of the connecting heads 214 is pre-buried in the building body 1, and the steel-concrete pressure beam 211 and the tension rod 212 are connected to the building body 1 through the corresponding connecting heads 214.

[0065] Specifically, for any of the connectors 214, the connector 214 includes a horizontally opened receiving hole 2141, and the axis of the receiving hole 2141 is perpendicular to the length direction of the steel-concrete compression beam 211 or the tension rod 212 corresponding to the connector 214;

[0066] The connecting seat 11 is located on the shear wall or column of the building body 1, and the connecting seat 11 includes a sliding groove 111 arranged in the horizontal direction, and a locking pin 112 is arranged in the sliding groove 111;

[0067] When any connector 214 is inserted into the corresponding connector seat 11 , the locking pin 112 corresponding to the connector 214 can be inserted into the receiving hole 2141 to lock the connector 214 .

[0068] More specifically, the connecting head 214 is inserted into one end of the building body 1 and is provided with a guide portion 2142. A spring 113 is also provided in the slide groove 111. One end of the spring 113 is connected to the slide groove 111, and the other end of the spring 113 is connected to the lock pin 112.

[0069] When any connecting head 214 is inserted into the corresponding connecting seat 11, the guide portion 2142 of the connecting head 214 can push the locking pin 112 in the connecting seat 11, so that the locking pin 112 slides in the slide groove 111 and compresses the spring 113; when the connecting head 214 continues to be inserted until the position of the receiving hole 2141 corresponds to the position of the locking pin 112, the spring 113 can push the locking pin 112 to slide in the slide groove 111 and be inserted into the receiving hole 2141.

[0070] like Figure 6 , Figure 7 As shown, the present embodiment provides an assembled prefabricated balcony with a large cantilever without diagonal bracing. In order to facilitate the installation of the combined cantilever beam 21, a connector 214 is provided at one end of the steel-concrete pressure beam 211 and the tension rod 212 for connecting to the main building 1. The corresponding connection seat 11 is pre-buried on the main building 1, so that the combined cantilever beam 21 can be quickly installed and fixed during installation, reducing the time for high-altitude operations on site. Specifically, when installing the combined cantilever beam 21, the connector 214 provided on the steel-concrete pressure beam 211 or the tension rod 212 is inserted into the connection seat 11. During this process, the guide portion 2142 (preferably, as shown in FIG. 2 ) at the front end of the connector 214 is inserted into the connection seat 11. Figure 6As shown, the guide portion 2142 is tapered, the portion that enters the connection seat 11 first is smaller in size, and the portion that enters later is larger in size) and contacts the connection seat 11 first. The guide portion 2142 can guide the action of the connector 214 being inserted into the connection seat 11, so that the connector 214 can be aligned with the connection seat 11 and inserted. During the process of continued insertion, the guide portion 2142 contacts the locking pin 112 and pushes the locking pin 112 to retract in the slide groove 111 and compress the spring 113 (the locking pin 112 can be set as a wedge-shaped surface or a spherical surface. In this embodiment, the contact portion between the locking pin 112 and the guide portion 2142 is a spherical surface). When the connector 214 continues to be inserted until the receiving hole 2141 corresponds to the position of the locking pin 112, the spring 113 releases its elastic potential energy and pushes the locking pin 112 into the receiving hole 2141. The above process corresponds to Figure 7 The embodiment is: the insertion direction of the guide portion 2142 is perpendicular to Figure 7 The displayed plane faces inward, and during the insertion process, the tip of the guide portion 2142 abuts against the spherical gap between the two oppositely arranged locking pins 112, and pushes the two locking pins 112 back into the guide groove 111. After continuing to insert to the position of the locking pin 112 corresponding to the receiving hole 2141, the spring 113 pushes the locking pin 112 into the receiving hole 2141, completing the locking of the combined cantilever beam 21.

[0071] Based on this, the assembled large cantilevered prefabricated balcony without diagonal bracing provided by the embodiment of the utility model can reduce the difficulty of assembly during assembly and installation, and can achieve precise installation without manual detailed adjustment of the position of the combined cantilever beam 21, and can achieve rapid plug-in, installation and fixation of the combined cantilever beam 21, thereby shortening the assembly and installation period.

[0072] It should be understood that in the drawings, it is difficult to distinguish different parts and components by only using the cross-hatching symbols representing concrete. Therefore, the various cross-hatching symbols used in the drawings are only used to distinguish different parts and components, and do not represent specific materials. For example Figure 4 The hatching symbol using oblique lines represents the balcony slab 23, which should not be interpreted as "balcony slab 23 made of metal material".

[0073] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An assembled large cantilevered prefabricated balcony without diagonal bracing, which can be assembled and installed on the outside of a building body (1). It is characterized in that include: A plurality of combined cantilever beams (21), wherein one end of the plurality of combined cantilever beams (21) are all installed at the same elevation position of the building body (1); Side beams (22), the two ends of the side beams (22) being respectively connected to ends of two adjacent combined cantilever beams (21) away from the building body (1); A balcony slab (23), wherein one end of the balcony slab (23) is overlapped on the cross beam of the building body (1), and the other end of the balcony slab (23) is overlapped on the side beam (22); or, the two ends of the balcony slab (23) are overlapped on two adjacent combined cantilever beams (21); Wherein, the combined cantilever beam (21) comprises a steel-concrete compression beam (211), a tension rod (212) and a plurality of connecting rods (213); One end of the steel-concrete pressure-bearing beam (211) is used for connecting to the building body (1), and the other end is used for connecting to the side beam (22); The tension rod (212) is located above the steel-concrete pressure beam (211), and one end of the tension rod (212) is used to connect to the building body (1); For any of the connecting rods (213), one end of the connecting rod (213) is connected to the tension rod (212), and the other end is connected to the steel structure in the steel-concrete compression beam (211); the tension rod (212) and the connecting rod (213) simultaneously serve as the railing structure of the assembled large cantilever prefabricated balcony without diagonal bracing.

2. The prefabricated large cantilevered balcony without diagonal bracing according to claim 1, It is characterized in that The tension rod (212) is arranged horizontally, and at least one of the connecting rods (213) is arranged obliquely.

3. The assembled large cantilevered prefabricated balcony without diagonal bracing according to claim 2, It is characterized in that The distance between the tension rod (212) and the upper surface of the steel-concrete pressure beam (211) is 0.8m to 1.4m, and the beam height of the steel-concrete pressure beam (211) is 0.3m to 0.8m.

4. The assembled large cantilevered prefabricated balcony without diagonal bracing according to claim 1, It is characterized in that The materials of the tension rod (212) and the connection rod (213) are both high-strength steel, and the concrete of the steel-concrete pressure beam (211) is high-performance concrete.

5. The assembled large cantilevered prefabricated balcony without diagonal bracing according to claim 1, It is characterized in that The balcony slab (23) comprises a plurality of prefabricated support-free floor slabs (231); For any of the prefabricated support-free floor slabs (231), one end of the prefabricated support-free floor slab (231) is overlapped on the crossbeam of the building body (1), and the other end is overlapped on the side beam (22), and a plurality of the prefabricated support-free floor slabs (231) are arranged one by one adjacent to each other along the length direction of the side beam (22); or, for any of the prefabricated support-free floor slabs (231), both ends of the prefabricated support-free floor slab (231) are overlapped on a combined cantilever beam (21) respectively, and a plurality of the prefabricated support-free floor slabs (231) are arranged one by one adjacent to each other along the length direction of the combined cantilever beam (21).

6. The assembled large cantilevered prefabricated balcony without diagonal bracing according to claim 1, It is characterized in that The balcony slab (23) comprises a plurality of support-free base plates (232) and cast-in-place concrete (233); For any of the support-free bottom plates (232), one end of the support-free bottom plate (232) is overlapped on the crossbeam of the building body (1), and the other end is overlapped on the side beam (22), and a plurality of the support-free bottom plates (232) are arranged one by one adjacent to each other along the length direction of the side beam (22); or, for any of the support-free bottom plates (232), both ends of the support-free bottom plate (232) are overlapped on a combined cantilever beam (21), respectively, and a plurality of the support-free bottom plates (232) are arranged one by one adjacent to each other along the length direction of the combined cantilever beam (21); The support-free bottom plate (232) is selected from one or more of a truss steel bar floor deck, a support-free composite plate, and a corrugated profiled steel plate; The cast-in-place concrete (233) is poured on the support-free base plate (232).

7. An assembled large cantilevered prefabricated balcony without diagonal bracing according to any one of claims 1 to 6, It is characterized in that A connector (214) is provided at one end of the steel-concrete pressure-bearing beam (211) and the tension rod (212) connected to the building body (1), and a connection seat (11) corresponding to each of the connectors (214) is pre-buried in the building body (1); the steel-concrete pressure-bearing beam (211) and the tension rod (212) are connected to the building body (1) via the corresponding connector (214).

8. The assembled large cantilevered prefabricated balcony without diagonal bracing according to claim 7, It is characterized in that For any of the connecting heads (214), the connecting head (214) comprises a receiving hole (2141) opened horizontally, and the axis of the receiving hole (2141) is perpendicular to the length direction of the steel-concrete compression beam (211) or the tension rod (212) corresponding to the connecting head (214); The connection seat (11) is located on a shear wall or a column of the building body (1), and the connection seat (11) comprises a slide groove (111) arranged in a horizontal direction, and a locking pin (112) is arranged in the slide groove (111); When any connecting head (214) is inserted into the corresponding connecting seat (11), the locking pin (112) corresponding to the connecting head (214) can be inserted into the receiving hole (2141) to lock the connecting head (214).

9. The assembled large cantilevered prefabricated balcony without diagonal bracing according to claim 8, It is characterized in that One end of the connector (214) inserted into the building body (1) is provided with a guide portion (2142), and a spring (113) is also provided in the slide groove (111), one end of the spring (113) is connected to the slide groove (111), and the other end of the spring (113) is connected to the lock pin (112); When any connector (214) is inserted into the corresponding connector seat (11), the guide portion (2142) of the connector (214) can push the locking pin (112) in the connector seat (11), so that the locking pin (112) slides in the slide groove (111) and compresses the spring (113); when the connector (214) continues to be inserted until the position of the receiving hole (2141) corresponds to the position of the locking pin (112), the spring (113) can push the locking pin (112) to slide in the slide groove (111) and be inserted into the receiving hole (2141).

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