Non-structural bearing cast-in-place self-insulation bare concrete outer wall and joint structure

Abstract

The utility model relates to a non-structural load-bearing cast-in-place self-insulation bare concrete outer wall and a node structure, and the non-structural load-bearing cast-in-place self-insulation bare concrete outer wall comprises a bare concrete wall body with the heat conductivity coefficient less than 0.5 W / m.k and the 28d standard curing compressive strength greater than 10Mpa; the steel bar frame is located in the bare concrete wall body so as to provide a supporting framework for the bare concrete wall body.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building engineering, especially to non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall and node structure. BACKGROUND

[0002] Under the guidance of the national double carbon (carbon peak and carbon neutralization) target, low carbonization of concrete and cement has also become the focus of industry research, and cast-in-place fair-faced concrete, as an important building material, is an important research direction in the field of green building.

[0003] In recent years, cast-in-place fair-faced concrete materials have been increasingly applied in domestic and foreign engineering practices, and their purity and aesthetics are favored by various civil engineering and municipal engineering. However, this material has obvious shortcomings in energy saving during the practice process: when fair-faced concrete is used for building outer walls, the thermal insulation performance is poor. The material itself has a thermal conductivity of about 1.7 W / m.k, which does not meet the basic requirements of most civil engineering for energy saving.

[0004] To meet the thermal insulation requirements of fair-faced concrete building outer walls, the current conventional method is to use two methods of wall internal insulation or "sandwich" construction to solve the problem. Internal insulation, which sets the insulation layer on the indoor side of the wall, can solve the problem of thermal insulation of the outer wall, but it will occupy the area of the indoor space, and more disadvantageously, the fair-faced concrete appearance on the indoor side of the wall cannot be achieved, which seriously affects the design effect. The "sandwich" construction, which is composed of two layers of cast-in-place fair-faced concrete plates and a middle extruded polystyrene board insulation layer, can ensure that the indoor and outdoor sides of the outer wall are fair-faced, but this construction method has complex levels, multiple construction procedures, complex formwork production and steel bar binding construction process, high cost of measures and labor, and high construction cost. It is difficult to position the insulation layer during construction. INVENTION CONTENTS

[0005] In view of the above analysis, the utility model aims to provide a non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall and node structure, at least to solve one of the above problems.

[0006] The purpose of the utility model is mainly realized through the following technical solutions:

[0007] The utility model provides a non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, which comprises:

[0008] The fair-faced concrete wall has a thermal conductivity of less than 0.5 W / m.k and a 28d standard curing compressive strength of more than 10 Mpa.

[0009] The steel bar frame is located in the fair-faced concrete wall to provide a support framework for the fair-faced concrete wall.

[0010] Further, the steel bar frame comprises:

[0011] two steel bars arranged in parallel, the steel bars comprising a plurality of horizontal cross bars and vertical longitudinal bars interwoven;

[0012] a plurality of reinforcing bars arranged between the two steel bars, both ends of the reinforcing bars being connected with the two steel bars respectively.

[0013] Further, one end of the reinforcing bar is arranged around the horizontal cross bar of one steel bar, and the other end of the reinforcing bar is arranged around the horizontal cross bar of the other steel bar.

[0014] The reinforcing bar is straightened between the two steel bars.

[0015] Further, the fair-faced concrete wall is externally provided with a protective coating.

[0016] The utility model further provides a node structure of non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, at least can be used for the connection of building outer wall and indoor load-bearing structure, the node structure comprises:

[0017] the indoor load-bearing structure comprises one or more of a structural floor slab, a first structural column and a first structural edge beam;

[0018] The non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall is supported on the indoor load-bearing structure.

[0019] Further, the structural floor slab or the first structural edge beam of adjacent layers respectively extends to the upper and lower ends of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall.

[0020] Preferably, the upper and lower ends of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall are connected with the first structural edge beam or the structural floor slab extending to the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall through first connecting steel bars;

[0021] The first connecting steel bar is in the shape of a "U", and the open end is located in the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, and the closed end is located in the first structural edge beam;

[0022] The first connecting steel bar is vertically arranged, one side of the first connecting steel bar is bound along the vertical longitudinal bar of the first structural edge beam extending close to the vertical longitudinal bar of the first structural edge beam through the reinforcing bar frame, and the other side of the first connecting steel bar is bound with the reinforcing bar of the reinforcing bar frame;

[0023] Preferably, the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall is connected with the first structural column through second connecting steel bars;

[0024] The second connecting steel bar is in the shape of a "several" shape, and the open end is located in the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, and the closed end is located in the first structural column;

[0025] The second connecting steel bar is horizontally arranged, and two sides of the second connecting steel bar extend outward vertically, and the vertically extending segments extend away from the horizontal cross bars of the first structural column and are bound.

[0026] Further, the overlapping length of the binding lap joint of the first connecting steel bar, the second connecting steel bar and the longitudinal tensile steel bar of the steel bar frame is not less than 350 mm, and the overlapping length of the longitudinal compressive steel bar lap joint is not less than 250 mm.

[0027] Preferably, the upper and lower ends of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall and the first structural cantilever slab are provided with a first gap, and the first gap is provided with a first flexible connecting layer.

[0028] The outer side of the first structural cantilever slab is provided with a first insulation layer.

[0029] The inner side wall of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall and the first structural edge beam and the first structural column are provided with a second gap, and the second gap is provided with a second flexible connecting layer.

[0030] The non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall is provided with a second insulation layer within a range of 500±50 mm of the structural floor in the indoor direction.

[0031] The utility model also provides a node structure provided with a non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, which can be used at least for the connection between the outer wall of a building top layer and a top layer load-bearing structure.

[0032] The non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall mentioned above;

[0033] The top layer load-bearing structure is at least partially inserted and fixed in the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, and the top layer load-bearing structure comprises one or more of a roof structure plate, a second structural column and a second structural edge beam.

[0034] Further, the top layer structure plate or the second structural edge beam extends into the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, and the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall is connected with the second structural edge beam or the top layer structure plate extending into the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall through a third connecting steel bar.

[0035] Preferably, the second structural edge beam is provided with a second structural cantilever slab extending into the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall.

[0036] The second structure eaves plate is located in the non-structural load-bearing cast-in-place self-insulation bare concrete exterior wall, one end of the third connecting steel bar is located in the second structure eaves plate, and the other end extends downward into the non-structural load-bearing cast-in-place self-insulation bare concrete exterior wall;

[0037] Preferably, the third connecting steel bar is in the shape of a "U", and the open end is located in the non-structural load-bearing cast-in-place self-insulation bare concrete exterior wall, and the closed end is located in the second structure eaves plate;

[0038] The third connecting steel bar is vertically arranged;

[0039] One side of the third connecting steel bar is bound along the vertical longitudinal steel of the second structure edge beam, and the other side of the third connecting steel bar is bound with the tensioning steel of the steel frame;

[0040] Preferably, the outer side and the bottom of the second structure eaves plate are provided with a third insulation layer, and the longitudinal section of the third insulation layer is in the shape of an "L" extending from the outer side to the bottom of the second structure eaves plate;

[0041] The inner side wall of the non-structural load-bearing cast-in-place self-insulation bare concrete exterior wall is provided with a third gap between the second structure edge beam and the second structure column, and the third gap is provided with a third flexible connecting layer;

[0042] The top of the top structure plate is provided with a fourth insulation layer, and the fourth insulation layer is provided with a waterproof layer.

[0043] The utility model also provides a node structure with the non-structural load-bearing cast-in-place self-insulation bare concrete exterior wall, and the node structure can be used for connecting the building bottom layer exterior wall and the bottom layer load-bearing structure at least, and the node structure comprises:

[0044] The bottom layer load-bearing structure comprises a structure foundation and a ground;

[0045] The non-structural load-bearing cast-in-place self-insulation bare concrete exterior wall is arranged on the structure foundation;

[0046] Preferably, the structure foundation is located below the ground, and part of the non-structural load-bearing cast-in-place self-insulation bare concrete exterior wall is inserted into the ground and located directly above the structure foundation;

[0047] The structure foundation comprises a base and a supporting column, and the supporting column is located on the base;

[0048] The cross section of the base is larger than the cross section of the supporting column, and the cross section of the supporting column is larger than the cross section of the non-structural load-bearing cast-in-place self-insulation bare concrete exterior wall;

[0049] Preferably, the part of the non-structural load-bearing cast-in-place self-insulation bare concrete exterior wall located below the ground and the side wall of the supporting column are provided with waterproof coiled material.

[0050] Preferably, the support column is provided with a limiting part for embedding the non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall, and the limiting part is located on both sides of the non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall;

[0051] Preferably, a fifth insulation layer is provided on the ground within a range of 1000±100mm in the direction of interior facing of the non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall, and a moisture-proof layer is also provided between the fifth insulation layer and the ground.

[0052] The non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall, facing outwards, has a sixth insulation layer on the side walls of the non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall and the outer walls of the supporting columns below ground level.

[0053] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0054] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0055] Figure 1 This is a structural schematic diagram of the non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall in a specific implementation method;

[0056] Figure 2 This is a vertical sectional view of the node construction in Embodiment 2 of the specific implementation;

[0057] Figure 3 This is a horizontal sectional view of the node construction in Embodiment 2 of the specific implementation;

[0058] Figure 4 This is a vertical sectional view of the node construction in Embodiment 3 of the specific implementation;

[0059] Figure 5 This is a vertical sectional view of the node construction in Embodiment 4 of the specific implementation.

[0060] Figure label:

[0061] 1-Exterior wall; 11-Fair-faced concrete wall; 111-Protective coating; 12-Reinforcing steel frame; 121-Horizontal reinforcement; 122-Vertical reinforcement; 123-Tie bar; 2-Interior load-bearing structure; 21-Structural floor slab; 211-Second insulation layer; 22-First structural column; 23-First structural edge beam; 231-First structural cantilever slab; 231a-First insulation layer; 24-First connecting reinforcement; 25-Second connecting reinforcement; 26-First flexible connection layer; 27-Second flexible connection layer; 3-Top floor load-bearing structure; 1-Roof structural slab; 311-Fourth insulation layer; 312-Waterproof layer; 32-Second structural column; 33-Second structural edge beam; 331-Second structural cantilever slab; 331a-Third insulation layer; 34-Third connecting steel bar; 35-Third flexible connection layer; 4-Bottom load-bearing structure; 41-Structural foundation; 411-Base; 412-Support column; 413-Limiting part; 42-Ground; 421-Fifth insulation layer; 422-Damp-proof layer; 43-Waterproof membrane; 44-Sixth insulation layer; 45-Seventh insulation layer. Detailed Implementation

[0062] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0063] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] Throughout the text, the terms “top,” “bottom,” “above,” “below,” and “on top” refer to the relative positions of components of the device, such as the relative positions of the top and bottom substrates within the device. It is understood that the device is multifunctional and independent of its spatial orientation.

[0065] The working surface of this utility model can typically be a plane or a curved surface, and can be inclined or horizontal. For ease of explanation, the embodiment of this utility model is placed on a horizontal surface and used on a horizontal surface, thereby defining "height" and "vertical".

[0066] Example 1

[0067] This embodiment discloses a non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall (hereinafter referred to as the exterior wall), such as Figure 1As shown, the outer wall 1 includes:

[0068] 11. Fair-faced concrete wall with a thermal conductivity of <0.5W / mk;

[0069] The steel reinforcement frame 12 is located inside the fair-faced concrete wall 11 to provide a supporting framework for the fair-faced concrete wall 11.

[0070] The fair-faced concrete wall 11 is made of high thermal resistance lightweight aggregate concrete. The selection criteria are that the thermal conductivity of the material needs to be less than 0.5W / mk, and the 28-day standard curing compressive strength of the high thermal resistance non-structural load-bearing cast-in-place fair-faced concrete is greater than 10MPa.

[0071] The high thermal resistance lightweight aggregate concrete comprises the following components by weight: 501-860.3 parts of rapid-setting and fast-hardening high belite sulfoaluminate cement, 281-431.5 parts of lightweight aggregate, 0.05-0.17 parts of cellulose, 20.0-155.8 parts of silica fume, 205-265 parts of water, 2.70-5.04 parts of water-reducing agent, 0.92-1.98 parts of defoamer, 2.67-7.94 parts of polymer powder, 1.65-5.18 parts of retarder, 0-289.1 parts of fly ash, 0-0.15 parts of accelerator, 0-86.4 parts of pigment, and 0-1.32 parts of glass fiber; wherein the lightweight aggregate includes at least one of hollow glass microspheres, fly ash ceramsite, and shale ceramsite.

[0072] The fast-setting and fast-hardening high belite sulfoaluminate cement includes at least one of the following: white crack-resistant fast-setting and fast-hardening high belite sulfoaluminate cement, crack-resistant fast-setting and fast-hardening high belite sulfoaluminate cement, white ultra-high strength fast-setting and fast-hardening high belite sulfoaluminate cement, and high strength fast-setting and fast-hardening high belite sulfoaluminate cement.

[0073] The silica fume includes ordinary silica fume and / or white silica fume.

[0074] The water-reducing agent includes at least one of polycarboxylate water-reducing agent, melamine water-reducing agent, and melamine water-reducing agent.

[0075] The water-reducing agent includes at least one of polycarboxylate water-reducing agent, melamine water-reducing agent, and melamine water-reducing agent.

[0076] The polymer powder includes at least one of redispersible vinyl acetate / ethylene copolymer powder, carboxylic acid block copolymer powder, and acrylic polymer powder.

[0077] The retarder includes at least one of sodium citrate, citric acid, sodium gluconate, and zinc carbonate.

[0078] The quick-setting agent includes lithium carbonate and / or lithium sulfate.

[0079] The pigment includes at least one of iron oxide pigment, titanium dioxide, and chromium oxide green.

[0080] The fly ash is grade II or higher.

[0081] The glass fiber includes alkali-resistant glass fiber.

[0082] The cellulose includes at least one of methylcellulose, hydroxyethylcellulose, hydroxypropyl methylcellulose, and carboxymethylcellulose.

[0083] The high thermal resistance lightweight aggregate concrete also includes silicate cement, wherein the proportion of silicate cement replacing fast-setting and fast-hardening high belite sulfoaluminate cement is ≤80%.

[0084] This invention utilizes fast-setting and fast-hardening high-belite sulfoaluminate cement as the main cementitious material, improving the early strength of high thermal resistance lightweight aggregate concrete and thus increasing production efficiency. Lightweight aggregate is the core material, and the various raw materials work together to produce decorative concrete with higher fluidity, no floating, low thermal conductivity, high strength, no cracking, and no need for water curing. This high thermal resistance lightweight aggregate concrete surface is crack-free, virtually bubble-free, has minimal color difference, a smooth and flat surface, and good water retention, thus eliminating the need for water curing, simplifying the process, and avoiding efflorescence caused by water curing, which affects the aesthetics of the concrete surface. This high thermal resistance lightweight aggregate concrete has high tensile bond strength and can be used for strong bonding with other concrete substrates.

[0085] For example, high thermal resistance lightweight aggregate concrete is composed of the following raw materials: 501 kg of 42.5 grade white crack-resistant quick-setting cement, 20.0 kg of 920 silica fume, and hollow glass microspheres (particle size 0.15-0.3 mm, bulk density 460±40 kg / m³). 3 The weight is 208.0 kg, and the bulk density is 280±30 kg / m³ of hollow glass microspheres (particle size 1.0-2.0 mm, bulk density 280±30 kg / m³). 3 The total amount of the ingredients is 179.0 kg, PC8300 water-reducing agent is 4.6 kg, P8850 defoamer is 0.92 kg, carboxymethyl cellulose is 0.17 kg, 5010 adhesive powder is 4.52 kg, sodium citrate is 3.4 kg and water is 221 kg, with a water-to-material ratio of 0.24.

[0086] High thermal resistance lightweight aggregate concrete is composed of the following raw materials: 601 kg of 42.5 grade white crack-resistant quick-setting cement, 61.4 kg of 920 silica fume, and hollow glass microspheres (particle size 0.15-0.3 mm, bulk density 460±40 kg / m³). 3 The weight is 270.3 kg, and the bulk density of the hollow glass microspheres (particle size 1.0-2.0 mm, bulk density 280±30 kg / m³) is 280±30 kg / m³. 3The mixture consists of 76 kg of C900 polycarboxylate superplasticizer, 4 kg of P8850 defoamer, 1.33 kg of lithium carbonate, 0.1 kg of carboxymethyl cellulose, 6.14 kg of 5010 adhesive powder, 3.59 kg of sodium gluconate, and 205 kg of water, with a water-to-material ratio of 0.2.

[0087] High thermal resistance lightweight aggregate concrete is composed of the following raw materials: 749 kg of grade 72.5 white ultra-high strength quick-setting cement, 55.1 kg of white silica fume, 2.2 kg of chrome green, and hollow glass microspheres (particle size 0.15-0.3 mm, bulk density 460±40 kg / m³). 3 The weight of the hollow glass microspheres (particle size 1.0-2.0 mm, bulk density 280±30 kg / m³) is 231.4 kg. 3 The following components were added: 49.6 kg of C900 polycarboxylate superplasticizer, 4.07 kg of P803 defoamer, 1.1 kg of P8850 defoamer, 0.11 kg of lithium carbonate, 0.11 kg of carboxymethyl cellulose, 6.6 kg of 5044 adhesive powder, 1.65 kg of zinc carbonate, and 220 kg of water, with a water-to-material ratio of 0.2.

[0088] Specifically, the composition of high thermal resistance lightweight aggregate concrete is described in CN115073106B, and will not be repeated here.

[0089] Preferably, the steel reinforcement frame 12 includes:

[0090] Two parallel steel meshes, the steel meshes comprising multiple interwoven horizontal transverse bars 121 and vertical longitudinal bars 122;

[0091] Multiple tie rods 123 are located between two steel meshes, meaning that both ends of the tie rods are connected to the two steel meshes respectively. Preferably, one end of the tie rod is wrapped around a horizontal cross bar of one steel mesh, and the other end of the tie rod is wrapped around a horizontal cross bar of another steel mesh. The tie rod 123 is straightened between the two steel meshes, meaning that the tie rod 123 is perpendicular to the two steel meshes.

[0092] The method for preparing the outer wall 1 includes the following steps:

[0093] S101: Arrange the steel reinforcement frame 12 according to the design;

[0094] S102: A model designed to fit into fair-faced concrete walls;

[0095] S103: High thermal resistance lightweight aggregate concrete was used for pouring, and the model was removed after curing to obtain the exterior wall 1.

[0096] The exposed concrete wall 11 is provided with a protective coating 111, that is, a protective agent is coated on the outer side of the exposed concrete wall 11. The protective agent is made of materials with good environmental protection, weather resistance, stain resistance, and water repellency to further improve the performance of the exterior wall. For example, the protective agent is a fluorocarbon resin exposed concrete protective agent or a silicone resin exposed concrete protective agent. Fluorocarbon resin exposed concrete protective agent: a polymer whose molecular main chain or side chain contains fluorocarbon bonds (FC) is a fluorocarbon resin. Fluorocarbon resin coatings have the highest known bond energy of carbon-fluorine bonds (485 kJ / mol), and the FC bonds are very stable. Fluorocarbon resins can transmit more than 95% of the medium and long wavelengths of sunlight in the ultraviolet region (220 nm-400 nm). Only ultraviolet light with a wavelength not greater than 220 nm can break the FC bonds, but these short-wave ultraviolet rays in sunlight account for a very small proportion and are easily absorbed by the atmospheric ozone layer. Therefore, exposed concrete protective agent coatings containing fluorocarbon resins have excellent weather resistance. The higher the fluorine content, the better the material's weather resistance. Currently, regardless of whether they are domestic or imported, all protective agents on the market, except for fluorocarbon protective agents, are silicone resin-based protective agents for fair-faced concrete, with a warranty period of 10 years.

[0097] Example 2

[0098] This embodiment discloses a joint structure with a non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall, which can at least be used for the connection between the building exterior wall (the building exterior wall adopts the exterior wall provided in Embodiment 1, i.e., a non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall) and the interior load-bearing structure, such as... Figures 2-3 As shown, it includes:

[0099] The indoor load-bearing structure 2 includes one or more of the following: structural floor slab 21, first structural column 22, and first structural edge beam 23;

[0100] The non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall 1 disclosed in Embodiment 1 is supported on the interior load-bearing structure 2.

[0101] For example, the interior load-bearing structure 2 of the intermediate floor of a high-rise building (i.e., a building with three or more floors) includes a structural floor slab 21, a first structural column 22, and a first structural edge beam 23. The first structural edge beam 23 is supported on the first structural column 22, and the structural floor slab 21 is supported on the first structural edge beam 23. The first structural column 22 provides longitudinal support for the entire high-rise building and also supports each floor; that is, the first structural column 22 extends from the foundation of the high-rise building to the top. The first structural edge beam 23 provides horizontal support for each floor of the first structural floor slab 21.

[0102] The exterior wall 1 is configured to be located between at least two first structural floor slabs 21, and is connected to the structural floor slabs 21, the first structural columns 22 and the first structural edge beams 23.

[0103] The structural floor slabs 21 or first structural edge beams 23 of adjacent floors extend to the upper and lower ends of the exterior wall 1, respectively. Specifically, the upper structural floor slab 21 or first structural edge beam 23 extends directly above the upper end of the exterior wall 1, and the lower structural floor slab 21 or first structural edge beam 23 extends directly below the lower end of the exterior wall 1. Preferably, the structural floor slabs 21 or first structural edge beams 23 of adjacent floors extend beyond the vertical centerline of the exterior wall 1 to improve the supporting stability of the exterior wall. Specifically, the first structural edge beams 23 are provided with first structural cantilever slabs 231 extending to both ends of the exterior wall 1. Specifically, the upper first structural edge beam is provided with a first structural cantilever slab extending above the upper end of the exterior wall, and the lower first structural edge beam is provided with a first structural cantilever slab extending below the lower end of the exterior wall. The vertical centerline of the exterior wall passes through the first structural cantilever slabs 231, meaning the first structural cantilever slabs 231 extend beyond the center of both the inner and outer sides of the exterior wall. Alternatively, the structural floor slab 21 extends to both ends of the exterior wall 1, that is, the upper structural floor slab extends to the upper part of the exterior wall and the lower structural floor slab extends to the lower part of the exterior wall, and both the upper and lower structural floor slabs extend beyond the vertical centerline of the exterior wall, that is, both the upper and lower structural floor slabs extend beyond the center of the inner and outer sides of the exterior wall.

[0104] In this embodiment, the first structural side beam 23 is provided with an outwardly extending first structural cantilever 231, and the first structural side beam, the first structural cantilever 231, and the structural floor slab 21 are cast together, that is, the three are formed as a whole.

[0105] The upper and lower ends of the outer wall 1 are connected to the first structural edge beam or structural floor slab extending to the outer wall by the first connecting steel bar 24.

[0106] In this embodiment, as Figure 2 As shown, the upper and lower ends of the outer wall 1 are connected to the first structural cantilever slabs 231 of the upper and lower first structural edge beams 23 respectively by first connecting steel bars 24. That is, one end of the first connecting steel bar 24 is connected to the first structural cantilever slab 231, and the other end is connected to the outer wall 1. Specifically, one end of the first connecting steel bar 24 extends into the outer wall 1 and is bound to the steel reinforcement frame 12 of the outer wall, and the other end of the first connecting steel bar 24 extends into the first structural cantilever slab 231 and is bound to the steel reinforcement in the first structural cantilever slab 231. Preferably, the shape of the first connecting steel bar 24 is similar to "U", with the open end located in the outer wall 1 and the closed end located in the first structural cantilever slab 231. The first connecting steel bar 24 is set vertically, with one side extending and bound along the vertical longitudinal reinforcement 122 of the steel reinforcement frame 12 near the first structural edge beam 23, and the other side of the first connecting steel bar bound to the tie bar 123.

[0107] The outer wall 1 is connected to the first structural column 22 via the second connecting steel bar 25, such as Figure 3As shown, one end of the second connecting steel bar 25 is connected to the exterior wall 1, and the other end is connected to the first structural column 22. Specifically, one end of the second connecting steel bar 25 extends into the exterior wall 1 and is bound to the steel bar framework 12 of the exterior wall. The other end of the second connecting steel bar 25 extends into the first structural column 22 and is bound to the steel bars within the first structural column 22. Preferably, the shape of the second connecting steel bar 25 is similar to a "Ji" shape, with the open end located in the exterior wall 1 and the closed end located in the first structural column 22. The second connecting steel bar 25 is horizontally arranged, and both sides of the second connecting steel bar 25 extend vertically outwards, and the vertically extending segments extend and are bound along the horizontal cross bar 121 of the steel bar framework 12 away from the first structural column.

[0108] Preferably, the lap length of the lap joint of the longitudinal tension steel bars of the first connecting steel bar, the second connecting steel bar, and the steel bar framework is not less than 350 mm, and the lap length of the lap joint of the longitudinal compression steel bars is not less than 250 mm to ensure the structural safety and reliability during use.

[0109] There is a first gap between the upper and lower ends of the exterior wall 1 and the first structural cantilever slab 231, and a first flexible connection layer 26 is provided in the first gap. Preferably, the first gap is 30 ± 5 mm, and the material of the first flexible connection layer 26 is a flexible material. Exemplarily, the first flexible connection layer is an extruded polystyrene board.

[0110] To avoid the formation of cold and heat bridges, the outer side of the first structural cantilever slab 231 is provided with a first insulation layer 231a, and at the same time, it can prevent the phenomenon of local condensation, mildew, and dripping on the inner side of the exterior wall due to excessive temperature difference between indoors and outdoors. The first insulation layer is an extruded polystyrene board with a thickness not less than 30 mm.

[0111] There is a second gap between the inner side wall (the side wall facing the interior) of the exterior wall 1 and the first structural side beam 23 and the first structural column 22, and a second flexible connection layer 27 is provided in the second gap to improve the connection strength between the wall and the first structural side beam 23 and the first structural column 22. Preferably, the second gap is 30 ± 5 mm, and the material of the second flexible connection layer is a flexible material. Exemplarily, the second flexible connection layer is an extruded polystyrene board.

[0112] For thermal insulation, a second insulation layer 211 is provided on the structural floor slab within a range of 500 ± 50 mm in the direction towards the interior of the exterior wall, that is, a second insulation layer 211 within a range of 500 ± 50 mm is provided on the side of the structural floor slab 21 close to the exterior wall. Preferably, a moisture-proof layer is also provided between the second insulation layer 211 and the structural floor slab 21. The thickness of the second insulation layer is 30 - 50 mm.

[0113] It should be noted that Figure 2 and Figure 3For clarity, only the steel reinforcement frame of the exterior wall and its connection to the interior load-bearing structure are shown; the steel reinforcement of the interior load-bearing structure itself is not drawn.

[0114] The construction method for node construction in this embodiment includes the following steps:

[0115] S201: Construct the indoor load-bearing structure and simultaneously install the first and second connecting steel bars to be connected to the exterior wall;

[0116] S202: Tie the steel reinforcement frame of the exterior wall and tie the steel reinforcement frame together with the first connecting steel reinforcement and the second connecting steel reinforcement;

[0117] S203: The formwork is designed to cooperate with the steel reinforcement frame, and a first insulation layer and a first flexible connection layer are also provided.

[0118] S204: High thermal resistance lightweight aggregate concrete is used for pouring, and after curing, the model is removed. A second flexible connection layer is formed by extrusion, and a second insulation layer is laid on the structural floor slab to obtain the node structure with an external wall in this embodiment.

[0119] To ensure the integrity and aesthetics of the building's exterior, in step S202, the outer vertical longitudinal bars 122 of the lower layer steel frame extend to the upper layer, and in step S203, the formwork can wrap around the first structural cantilever slab. That is, when pouring high thermal resistance lightweight aggregate concrete, the outer side of the first structural cantilever slab is wrapped around it to form a building wall without obvious discontinuities, thereby improving the stability of the building.

[0120] Example 3

[0121] This embodiment discloses another node structure with a non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall, which can at least be used for the connection between the top-floor exterior wall (the top-floor exterior wall adopts the exterior wall provided in Embodiment 1, i.e., a non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall) and the top-floor load-bearing structure, such as Figure 4 As shown, it includes:

[0122] Example 1 discloses a non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall 1;

[0123] The top-level load-bearing structure 3 is at least partially inserted and fixed inside the outer wall 1, that is, the outer wall is fixed on the top-level load-bearing structure 3; the top-level load-bearing structure 3 includes one or more of the following: roof structural slab 31, second structural column 32, and second structural edge beam 33.

[0124] Exemplarily, the top - layer load - bearing structure 3 of the high - rise building includes a roof structure slab 31, a second structural column 32, and a second structural side beam 33. The second structural side beam 33 is supported on the second structural column 32, and the roof structure slab 31 is supported on the second structural side beam 33.

[0125] It should be noted that the first structural column 22 and the second structural column 32 are different parts of the same structural column. The first structural column is located in the middle layer, and the second structural column is located in the top layer, providing longitudinal support for their respective layers. The first structural side beam and the second structural side beam have the same structure. The first structural side beam is located in the middle layer to provide horizontal support for the structural floor slab, and the second structural side beam is located in the top layer to provide horizontal support for the top - layer structural slab.

[0126] It should be noted that the connection relationship between the second structural column and the exterior wall is the same as that between the first structural column and the exterior wall in the second embodiment. That is, the exterior wall is connected to the second structural column through second connecting steel bars. One end of the second connecting steel bar is connected to the exterior wall, and the other end is connected to the second structural column. Specifically, one end of the second connecting steel bar extends into the exterior wall and is bound to the steel bar framework of the exterior wall, and the other end of the second connecting steel bar extends into the second structural column and is bound to the steel bars inside the second structural column. Preferably, the shape of the second connecting steel bar is similar to a "J" shape, with the open end in the exterior wall and the closed end in the second structural column. The second connecting steel bar is horizontally arranged, and both sides of the second connecting steel bar extend vertically outward. The vertical extension section extends and binds along the horizontal cross - bar of the steel bar framework away from the second structural column. There is a second gap between the inner side wall of the exterior wall and the second structural column, and a second flexible connection layer is provided in the second gap to improve the connection strength between the wall and the second structural column. Preferably, the second gap is 30 ± 5 mm, and the material of the second flexible connection layer is a flexible material. Exemplarily, the second flexible connection layer is an extruded polystyrene board.

[0127] The top - layer structural slab 31 or the second structural side beam 33 extends into the exterior wall, that is, the top - layer structural slab 31 or the second structural side beam 33 extends outward and inserts into the exterior wall to connect with the exterior wall. Preferably, the top - layer structural slab 31 or the second structural side beam 33 extends beyond the vertical center line of the exterior wall 1 to improve the support stability for the exterior wall. Specifically, the second structural side beam 33 is provided with a second structural cantilever slab 331 that extends into the exterior wall 1, and the vertical center line of the exterior wall passes through the second structural cantilever slab 331, that is, the second structural cantilever slab 331 extends beyond the center of both the inner and outer sides of the exterior wall. Or, the top - layer structural slab 31 extends into the exterior wall 1 and the top - layer structural slab extends beyond the vertical center line of the exterior wall, that is, the top - layer structural slab extends beyond the center of both the inner and outer sides of the exterior wall.

[0128] In this embodiment, the second structural side beam 33 is provided with a second structural cantilever slab 331 that extends outward, and the second structural side beam, the second structural cantilever slab 231, and the top - layer structural slab 31 are cast integrally, that is, the three are integrally formed.

[0129] The second structural cantilever slab 331 is inserted into the exterior wall, and the exterior wall above the second structural cantilever slab 331 forms a parapet wall, which is supported above the top structural slab.

[0130] The exterior wall is connected to the second structural edge beam or top structural slab extending into the exterior wall via the third connecting steel bar 34.

[0131] In this embodiment, as Figure 4 As shown, the second structural cantilever 331 of the second structural edge beam 33 is located inside the outer wall 1. One end of the third connecting steel bar 34 is located inside the second structural cantilever 331, and the other end extends downward into the outer wall. Preferably, the third connecting steel bar 34 is U-shaped, with the open end located in the outer wall 1 and the closed end located in the second structural cantilever 331. The third connecting steel bar 34 is vertically arranged, with one side extending and bound along the vertical longitudinal bar 122 of the steel reinforcement frame 12 near the second structural edge beam 33, and the other side bound to the tie bar 123.

[0132] In order to improve the connection strength between the outer wall and the second structural edge beam 33, the vertical longitudinal bars 122 of the steel reinforcement frame 12 of the outer wall are longitudinally inserted through the second structural edge beam 33.

[0133] Preferably, the lap length of the longitudinal tension reinforcement lap joint of the third connecting reinforcement and the reinforcement frame is not less than 350mm, and the lap length of the longitudinal compression reinforcement lap joint is not less than 250mm, so as to ensure the structural safety and reliability in use.

[0134] To avoid thermal bridging, a third insulation layer 331a is provided on the outer side and bottom of the second structural cantilever slab 331. The longitudinal section of the third insulation layer 331a is "L"-shaped, extending from the outer side to the bottom of the second structural cantilever slab 331. This prevents condensation, mold, and dripping from occurring on the inner side of the exterior wall due to excessive temperature differences between indoors and outdoors. The third insulation layer is extruded polystyrene board with a thickness of not less than 30mm.

[0135] A third gap is provided between the inner sidewall (facing the interior) of the exterior wall 1 and the second structural edge beam 33 and the second structural column 32. A third flexible connection layer 35 is provided within the third gap to improve the connection strength between the wall and the second structural edge beam 33 and the second structural column 32. Preferably, the third gap is 30±5mm, and the material of the third flexible connection layer is a flexible material. For example, the third flexible connection layer is extruded polystyrene board.

[0136] For thermal insulation and moisture control, a fourth insulation layer 311 is laid on top of the top structural panel 31, and a waterproof layer 312 is laid on top of the fourth insulation layer 311. Preferably, the thickness of the fourth insulation layer is 50-150 μm, and the fourth insulation layer is extruded polystyrene board. The waterproof layer is made of 4+3 SBS thermoplastic polyester waterproof membrane, and the waterproof layer is generally laid in two layers, one 4 mm thick and the other 3 mm thick.

[0137] In practical applications, the material thickness, structural form, and roof heat transfer coefficient of the fourth insulation layer and waterproof layer should meet the energy-saving and insulation requirements of the building location.

[0138] It should be noted that, Figure 4 For clarity, only the steel reinforcement frame of the exterior wall and its connection to the top-floor load-bearing structure are shown; the steel reinforcement of the interior load-bearing structure itself is not drawn.

[0139] The construction method for node construction in this embodiment includes the following steps:

[0140] S301: Construct the top-level load-bearing structure, and at the same time set the third connecting steel bar to be connected to the outer wall, and set the vertical longitudinal bar of the outer wall near the side beam of the second structure.

[0141] S302: Tie the steel reinforcement frame of the exterior wall and tie the steel reinforcement frame together with the third connecting steel reinforcement;

[0142] S303: The formwork is designed to match the steel reinforcement frame, and a third insulation layer is also installed.

[0143] S304: High thermal resistance lightweight aggregate concrete is used for pouring, and after curing, the model is removed. The third flexible connection layer is formed by extrusion, and the fourth insulation layer and waterproof layer are laid on the top structural slab to obtain the node structure with an external wall in this embodiment.

[0144] To ensure the integrity and aesthetics of the building's exterior, in step S202, the outer vertical longitudinal bars 122 of the lower layer steel frame extend to the upper layer, and in step S203, the formwork can wrap around the first structural cantilever slab. That is, when pouring high thermal resistance lightweight aggregate concrete, the outer side of the first structural cantilever slab is wrapped around it to form a building wall without obvious discontinuities, thereby improving the stability of the building.

[0145] Example 4

[0146] This embodiment discloses a third type of joint structure with a non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall, which can at least be used for the connection between the exterior wall of the building's ground floor (the exterior wall of the building's ground floor adopts the exterior wall provided in Embodiment 1, i.e., a non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall) and the ground floor load-bearing structure, such as Figure 5 As shown, it includes:

[0147] The underlying load-bearing structure 4 includes the structural foundation 41 and the ground 42;

[0148] The non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall 1 disclosed in Embodiment 1 is installed on the structural foundation 41.

[0149] Specifically, the structural foundation 41 is located below the ground 42, and part of the outer wall 1 is inserted into the ground and located directly above the structural foundation 41.

[0150] The structural foundation 41 includes a base 411 and a support column 412, with the support column located on the base. The cross-section of the base 411 at any point is larger than the cross-section of the support column 412, and the cross-section of the support column 412 is larger than the cross-section of the outer wall 1. The shape of the support column 412 matches the outer wall. This arrangement provides stable support for the outer wall.

[0151] The portion of the exterior wall below ground level and the sidewalls of the supporting columns 412 are covered with waterproof membrane 43, which effectively waterproofs and drains water, preventing groundwater from rising above ground level due to capillary action along the interior of the exterior wall and adversely affecting indoor thermal comfort. For example, the waterproof membrane is a 3mm thick SBS polyester-reinforced waterproof membrane, a 1.5mm thick polyethylene polypropylene waterproof material, or a 1.5mm thick EPDM rubber waterproof membrane.

[0152] To improve the supporting strength of the support column against the outer wall, the support column 412 is provided with a limiting part 413 embedded in the outer wall. The limiting part 413 is located on both sides of the outer wall, and the longitudinal section of the limiting part 413 is a right triangle. One right-angled side of the right triangle is close to the outer wall, and the other side is close to the top of the support column 412, so as to more stably support the outer wall.

[0153] For thermal insulation, a fifth insulation layer 421 is provided on the ground within a range of 1000±100mm on the exterior wall facing inwards; that is, a fifth insulation layer 421 within a range of 1000±100mm is provided on the side of the interior floor closest to the exterior wall. Preferably, a moisture-proof layer 422 is also provided between the fifth insulation layer 511 and the ground. For example, the fifth insulation layer is a 50mm thick extruded polystyrene board insulation layer, and the moisture-proof layer is a 1.5mm thick polyurethane waterproof coating.

[0154] To avoid thermal bridging, a sixth insulation layer 44 is provided on the exterior wall sidewalls below ground level facing the outside and the outer walls of the supporting columns (sidewalls facing the outside). Preferably, the sixth insulation layer is an extruded polystyrene board with a thickness of 30±5mm. A seventh insulation layer 45 is provided on the ground within a range of 1000±100mm facing the outside of the exterior wall. By setting a horizontal seventh insulation layer and a vertical sixth insulation layer outdoors, the thermal insulation performance of the weak points of the exterior wall can be improved, and thermal bridging can be avoided.

[0155] The structural foundation and ground level constitute the bottom layer structure, which also includes the top layer structure. That is, the bottom layer load-bearing structure includes a third structural column, a third structural edge beam, and a bottom layer structural floor slab. The third structural column, the third structural edge beam, and the bottom layer structural floor slab constitute the bottom layer top layer structure. The relationship between these three structures and the exterior wall is the same as the relationship between the first structural column, the first structural edge beam, and the structural floor slab in Embodiment 2, as well as the relationship between the three structures and the exterior wall. Only the connection relationship at the bottom of the bottom layer exterior wall is different. That is, the connection relationship between the top of the bottom layer exterior wall and the third structural edge beam and the bottom layer structural floor slab is the same as the connection relationship between the top of the exterior wall and the second structural edge beam and the structural floor slab in Embodiment 2, and the connection relationship between the bottom layer exterior wall and the third structural column is the same as the connection relationship between the exterior wall and the second structural column in Embodiment 2. This will not be repeated here.

[0156] The third structural column extends from the structural foundation to the ground floor. The third structural column, the first structural column, and the second structural column are different parts of the same structural column. The first structural column is located in the middle layer, the second structural column is located in the top layer, and the third structural column is located in the bottom layer, providing longitudinal support for the layer in which they are located.

[0157] It should be noted that, Figure 5 For clarity, the steel reinforcement bars of the exterior walls and the underlying load-bearing structure are not shown.

[0158] The construction method for node construction in this embodiment includes the following steps:

[0159] S401: Construct and pour the structural foundation, which shall be made of ordinary concrete;

[0160] S402: The steel reinforcement frame for tying the exterior wall is set up with a template that matches the steel reinforcement frame according to the design. High thermal resistance lightweight aggregate concrete is used for pouring, and the formwork is removed after curing.

[0161] S403: Waterproof membrane and sixth insulation layer are installed sequentially on the exterior wall and structural foundation. Soil is filled to form indoor and outdoor ground. Then, the second moisture-proof layer, fifth insulation layer and seventh insulation layer are laid respectively to obtain the node structure with exterior wall in this embodiment.

[0162] This utility model relates to a non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall. It is an integrated structure, not employing composite structural systems such as "sandwich" insulation, and possesses excellent high thermal resistance and self-insulating performance. The exterior wall of this utility model uses high thermal resistance lightweight aggregate concrete, which has higher thermal resistance, lower thermal conductivity, and better energy-saving effect than ordinary concrete, thus eliminating the need for an extruded polystyrene board insulation layer on the exterior wall.

[0163] This invention can solve the problems of complex construction and building techniques, high labor costs, and the common occurrence of thermal bridging affecting the thermal insulation performance of exterior walls, as well as the heavy self-weight of walls in the design and construction of "sandwich" non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior walls.

[0164] This utility model proposes corresponding improvement measures to address the shortcomings in the design and construction of fair-faced concrete buildings. The high thermal resistance, non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall uses lightweight aggregate concrete raw materials. It combines the characteristics of fair-faced concrete exterior walls in terms of shape and function, structural system, thermal insulation system, thermal structure, and waterproofing structure. It replaces the current "sandwich" composite structure with a simple, homogeneous exterior wall structure, making the building structure lighter and safer, while reducing construction technical difficulty and achieving lightweighting of concrete materials and reduction of construction and building measures.

[0165] This invention utilizes high thermal resistance, non-structural load-bearing cast-in-place fair-faced concrete only for the exterior walls of buildings requiring thermal insulation, while the interior structural floor slabs, roof slabs, interior walls, and interior beams and columns are still constructed using ordinary concrete. The structural system is simple and rational, with the same design and construction principles as ordinary concrete buildings, and it is cost-effective. The matching wall joint construction closely integrates with the overall exterior wall system, is technically simple, and easy to construct, effectively solving the problems of existing technologies and improving the overall building performance.

[0166] Currently, fair-faced concrete building facades are generally complex in structure, have poor energy-saving effects, and involve high construction costs and processes. Therefore, their application is currently limited to high-end buildings or venues such as museums and exhibition halls, significantly restricting their scope. On the other hand, as the construction industry enters a period of stable development, urban renewal and rural renovation and upgrading are becoming the future development direction of the industry, leading to an increase in the number of small-scale new construction and micro-renewal projects. This utility model is a green and low-carbon building construction technology that maximizes the energy-saving and consumption-reducing potential of fair-faced concrete envelope structures, reduces carbon emissions from concrete buildings, and lowers construction costs and difficulty. Therefore, it can expand the application scope of fair-faced concrete, increase industrial added value, broaden the application scenarios of materials and technologies, and align with industry development trends and emerging business needs.

[0167] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A non-structural load-bearing cast-in-place self-insulating fair-faced concrete exterior wall, characterized in that, The application relates to a non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, which comprises the following parts: a fair-faced concrete wall body with a heat conductivity coefficient of less than 0.5 W / m.k and a 28d standard curing compressive strength greater than 10 Mpa; a steel frame arranged in the fair-faced concrete wall body to provide a support framework for the fair-faced concrete wall body.

2. The non-structural load bearing cast-in-place self-insulating fair-faced concrete exterior wall according to claim 1, characterized in that, The steel frame comprises: two opposite parallel steel meshes, which comprise a plurality of interwoven horizontal transverse ribs and vertical longitudinal ribs; a plurality of tie bars arranged between the two steel meshes, and the two ends of the tie bars are connected with the two steel meshes respectively.

3. The non-structural load bearing cast-in-place self-insulating fair-faced concrete exterior wall according to claim 2, characterized in that, One end of the tie bar is arranged around the horizontal transverse rib of one steel mesh, and the other end of the tie bar is arranged around the horizontal transverse rib of the other steel mesh; the tie bar is straightened between the two steel meshes.

4. The non-structural load bearing cast-in-place self-thermal insulation fair-faced concrete exterior wall according to claim 1, characterized in that, The fair-faced concrete wall body is externally coated with a protective coating.

5. A joint construction of a non-structural load-bearing cast-in-place self-thermal insulation fair-faced concrete exterior wall, characterized in that, The application also relates to a node structure which can be used at least for the connection between a building outer wall and an indoor load-bearing structure, and the node structure comprises: an indoor load-bearing structure, which comprises one or more of a structural floor slab, a first structural column and a first structural edge beam; the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall as claimed in any one of claims 1 to 4 is supported on the indoor load-bearing structure.

6. The node structure of claim 5, wherein, The structural floor slab or the first structural edge beam of the adjacent layer respectively extends to the upper and lower ends of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall; the upper and lower ends of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall are connected with the first structural edge beam or the structural floor slab which extends to the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall through first connecting steel bars; the first connecting steel bars are in the shape of "U", and the open ends of the first connecting steel bars are located in the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, and the closed ends of the first connecting steel bars are located in the first structural edge beam; the first connecting steel bars are vertically arranged, one side of the first connecting steel bars is bound along the vertical longitudinal rib of the steel frame close to the first structural edge beam, and the other side of the first connecting steel bars is bound with the tie bars of the steel frame; the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall is connected with the first structural column through second connecting steel bars; the second connecting steel bars are in the shape of "U", and the open ends of the second connecting steel bars are located in the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, and the closed ends of the second connecting steel bars are located in the first structural column; the second connecting steel bars are horizontally arranged, and the two sides of the second connecting steel bars are vertically extended outward, and the vertically extended sections are bound along the horizontal transverse rib of the steel frame away from the first structural column.

7. The node configuration of claim 6, wherein, The overlapping length of the binding lap joint of the first connecting steel bars, the second connecting steel bars and the longitudinal tensile steel bars of the steel frame is not less than 350 mm, and the overlapping length of the binding lap joint of the longitudinal compressive steel bars is not less than 250 mm.

8. The node structure of claim 7, wherein, a first gap is arranged between the upper and lower ends of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall and the first structural edge beam, and a first flexible connecting layer is arranged in the first gap; a first insulation layer is arranged on the outer side of the first structural edge beam; a second gap is arranged between the inner side wall of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall and the first structural edge beam and the first structural column, and a second flexible connecting layer is arranged in the second gap; a second insulation layer is arranged on the structure floor slab within the range of 500+50 mm in the indoor direction of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall.

9. A joint construction of a non-structural load bearing cast-in-place self-thermal insulation fair-faced concrete exterior wall, characterized in that, At least can be used for the connection between the outer wall of the top floor and the load-bearing structure of the top floor, the node structure comprises: The non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall according to any one of claims 1 to 4; The load-bearing structure of the top floor is at least partially inserted into and fixed to the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall; the load-bearing structure of the top floor comprises one or more of a top floor structure plate, a second structure column and a second structure edge beam.

10. The node structure of claim 9, wherein, The top floor structure plate or the second structure edge beam extends into the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, and the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall is connected to the second structure edge beam or the top floor structure plate extending into the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall through a third connecting steel bar.

11. The node structure of claim 10, wherein, The second structure edge beam is provided with a second structure cantilever plate extending into the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall; The second structure cantilever plate is located in the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, one end of the third connecting steel bar is located in the second structure cantilever plate, and the other end extends downward into the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall.

12. The node structure of claim 11, wherein, The third connecting steel bar is in the shape of a "U", and the open end is located in the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, and the closed end is located in the second structure cantilever plate; The third connecting steel bar is vertically arranged; One side of the third connecting steel bar is bound along the vertical longitudinal steel bar of the second structure edge beam close to the steel bar support, and the other side of the third connecting steel bar is bound with the pulling steel bar of the steel bar support.

13. The node construction of claim 12, wherein, The outer side and the bottom of the second structure cantilever plate are provided with a third insulation layer, and the longitudinal section of the third insulation layer is in the shape of an "L" extending from the outer side to the bottom of the second structure cantilever plate; A third flexible connecting layer is arranged in a third gap between the inner side wall of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall and the second structure edge beam and the second structure column; The top of the top floor structure plate is provided with a fourth insulation layer, and a waterproof layer is arranged on the fourth insulation layer.

14. A joint construction of a non-structural load bearing cast-in-place fair-faced concrete exterior wall, characterized in that, At least can be used for the connection between the outer wall of the bottom floor and the load-bearing structure of the bottom floor, the node structure comprises: The load-bearing structure of the bottom floor comprises a structure foundation and a ground; The non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall according to any one of claims 1 to 4 is arranged on the structure foundation; The structure foundation is located below the ground, and part of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall is inserted into the ground and located directly above the structure foundation; The structure foundation comprises a base and a support column, and the support column is located on the base; The cross section of any part of the base is larger than the cross section of the support column, and the cross section of the support column is larger than the cross section of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall; The part of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall located below the ground and the side wall of the support column are provided with a waterproof roll material; The support column is provided with a limiting part for embedding the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall, and the limiting part is located on both sides of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall; The non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall is provided with a fifth insulation layer on the ground within the range of 1000±100mm in the indoor direction, and a moisture-proof layer is further arranged between the fifth insulation layer and the ground. The outer side wall of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall below the ground in the outdoor direction of the non-structural load-bearing cast-in-place self-insulation fair-faced concrete outer wall and the outer side wall of the support column are provided with a sixth insulation layer.

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