Cast-in-place structure heat preservation integrated bare concrete outer wall and joint structure

Abstract

The utility model relates to a cast-in-place structure thermal insulation integrated bare concrete outer wall and a node structure, and the cast-in-place structure thermal insulation integrated bare concrete outer wall comprises a bare concrete wall body, a heat conduction coefficient of the bare concrete wall body is less than 0.5 W / m.k, and 28d standard curing compressive strength is greater than 30Mpa; 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; wherein the reinforcing steel bar frame comprises two reinforcing steel bar nets which are oppositely arranged in parallel, and each reinforcing steel bar net comprises a plurality of horizontal transverse bars and vertical longitudinal bars which are interwoven; and the plurality of tie bars are positioned between the two reinforcing meshes, namely two ends of each tie bar are respectively connected with the two reinforcing meshes.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building engineering, especially cast-in-situ structure heat preservation integrated 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-situ 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-situ fair-faced concrete materials are 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 heat 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 heat insulation requirements of fair-faced concrete building outer walls, the current conventional method is to use two methods of wall internal heat preservation or "sandwich" sandwich structure to solve the problem. Internal heat preservation, which sets the heat preservation layer on the indoor side of the wall, can solve the heat insulation problem 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" structure, which is composed of two layers of cast-in-situ fair-faced concrete plates and a middle extruded polystyrene board heat preservation layer, can ensure that the indoor and outdoor sides of the outer wall are fair-faced, but this structure 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 heat preservation layer during construction. SUMMARY

[0005] In view of the above analysis, the utility model aims to provide a cast-in-situ structure heat preservation integrated 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 cast-in-situ structure heat preservation integrated 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 30Mpa;

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

[0010] The steel reinforcement 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 a horizontal cross bar of one steel bar, and the other end of the reinforcing bar is arranged around a horizontal cross bar of the other steel bar.

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

[0015] Preferably, the fair-faced concrete wall is coated with a protective coating.

[0016] The utility model also provides a node structure of the fair-faced concrete outer wall with the cast-in-place structure and the thermal insulation integration, which can be used at least for the connection between the building outer wall and the indoor structure floor.

[0017] The fair-faced concrete outer wall with the cast-in-place structure and the thermal insulation integration mentioned above;

[0018] The indoor structure floor is partially inserted into the fair-faced concrete outer wall with the cast-in-place structure and the thermal insulation integration.

[0019] Preferably, the outer side of the indoor structure floor is coated with a first thermal insulation layer.

[0020] The effective length of the indoor structure floor extending into the fair-faced concrete outer wall with the cast-in-place structure and the thermal insulation integration is not less than 100 mm.

[0021] Further, the vertical longitudinal bars inside the steel bar frame longitudinally pass through the indoor structure floor, and the steel bars in the indoor structure floor are bound with the vertical longitudinal bars longitudinally passing through the indoor structure floor.

[0022] During the binding process of the steel bar frame and the steel bars of the indoor structure floor, the overlapping length of the binding and overlapping joint of the longitudinal tensile steel bars should be not less than 350 mm, and the overlapping length of the binding and overlapping joint of the longitudinal compressive steel bars should be not less than 250 mm.

[0023] Preferably, a first buffer layer is arranged at the overlapping part of the indoor structure floor and the fair-faced concrete outer wall with the cast-in-place structure and the thermal insulation integration.

[0024] The utility model also provides a node structure of the fair-faced concrete outer wall with the cast-in-place structure and the thermal insulation integration, which can be used at least for the connection between the building top layer outer wall and the top layer structure floor.

[0025] The fair-faced concrete outer wall with the cast-in-place structure and the thermal insulation integration mentioned above is provided with an overlapping part.

[0026] a top floor slab at least partially located on the overlapping portion;

[0027] The cast-in-place structure insulation integrated fair-faced concrete outer wall comprises:

[0028] The fair-faced concrete wall has a heat conductivity coefficient of less than 0.5 W / m.k and a 28d standard curing compressive strength of greater than 30 Mpa.

[0029] A steel reinforcement frame is located in the fair-faced concrete wall to provide a support framework for the fair-faced concrete wall.

[0030] Further, the cast-in-place structure insulation integrated fair-faced concrete outer wall comprises a first section and a second section connected in sequence, the first section has a larger cross section than the second section, and the outer sides of the first section and the second section are flush, and the inner side of the second section is perpendicular to the top of the first section.

[0031] The longitudinal steel bars in the inner side of the steel reinforcement frame of the second section extend downward into the steel reinforcement frame of the first section, and the longitudinal steel bars in the inner side of the second section are tied together with the tie bars of the steel reinforcement frame of the first section.

[0032] The overlapping portion is defined by the first section and the second section, and is located at the top of the first section and the inner side of the second section.

[0033] Preferably, the width of the overlapping portion is not less than 100 mm.

[0034] Preferably, the vertical longitudinal steel bars in the inner side of the steel reinforcement frame of the first section longitudinally pass through the top steel reinforcement structure of the top floor slab, are bent outward and extend into the steel reinforcement frame of the second section to be connected with the steel reinforcement frame of the second section, and the longitudinally passing vertical steel bars are tied with the top steel reinforcement structure and the two steel mesh of the second section, respectively.

[0035] Preferably, a second buffer layer is arranged at the overlapping portion of the top floor slab and the cast-in-place structure insulation integrated fair-faced concrete outer wall.

[0036] Preferably, a third insulation layer is arranged on the outer side of the top floor slab.

[0037] Preferably, a fourth insulation layer is arranged on the top floor slab, and a first waterproof layer is arranged on the fourth insulation layer.

[0038] The utility model also provides a node structure provided with the cast-in-place structure insulation integrated fair-faced concrete outer wall, which can be used at least for connecting the building outer wall and the cantilevered balcony structure.

[0039] The cast-in-place structure insulation integrated fair-faced concrete outer wall mentioned above;

[0040] The cantilever balcony structure comprises a structural floor slab, a balcony slab and a cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall which are connected together;

[0041] The cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall comprises:

[0042] The fair-faced concrete wall has a heat conductivity coefficient of less than 0.5 W / m.k and a 28d standard curing compressive strength of greater than 30 Mpa.

[0043] The steel reinforcement frame is arranged in the fair-faced concrete wall to provide a support framework for the fair-faced concrete wall.

[0044] Further, the steel reinforcement structure of the balcony slab comprises upper and lower steel reinforcement meshes and a plurality of intermediate reinforcing bars arranged between the upper and lower steel reinforcement meshes.

[0045] The upper steel reinforcement mesh is arranged above the lower steel reinforcement mesh and is horizontally arranged.

[0046] The lower steel reinforcement mesh is inserted into the steel reinforcement frame of the cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall and is bound with the horizontal and vertical reinforcing bars of the steel reinforcement frame.

[0047] The inner corner of the top end of the steel reinforcement frame of the cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall is bound with the outer end of the steel reinforcement structure of the structural floor slab.

[0048] The inner side steel reinforcement mesh of the cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall extends upward and longitudinally through the steel reinforcement structure of the structural floor slab, is then bent and horizontally extended outward to form the upper steel reinforcement mesh of the balcony slab.

[0049] Preferably, a second waterproof layer is arranged on the balcony slab.

[0050] The second waterproof layer is further provided with a drainage structure.

[0051] The utility model further provides a node structure provided with the cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall, which can be used at least for connecting the building bottom layer outer wall and the bottom layer structure.

[0052] The bottom layer structure comprises a structural foundation and a ground.

[0053] The cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall is arranged on the structural foundation.

[0054] The cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall comprises:

[0055] The fair-faced concrete wall has a heat conductivity coefficient of less than 0.5 W / m.k and a 28d standard curing compressive strength of greater than 30 Mpa.

[0056] Steel bar frame located in the fair-faced concrete wall to provide a support framework for the fair-faced concrete wall.

[0057] Further, the structural foundation is located below the ground, and the part of the cast-in-place structure thermal insulation integrated fair-faced concrete outer wall is inserted into the ground and located directly above the structural foundation.

[0058] The structural foundation comprises a base and a support column, and the support column is located on the base.

[0059] 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 cast-in-place structure thermal insulation integrated fair-faced concrete outer wall.

[0060] Preferably, the part of the cast-in-place structure thermal insulation integrated fair-faced concrete outer wall located below the ground and the side wall of the support column are paved with waterproof coiled material.

[0061] Preferably, the support column is provided with a limiting part for embedding the cast-in-place structure thermal insulation integrated fair-faced concrete outer wall, and the limiting part is located on both sides of the cast-in-place structure thermal insulation integrated fair-faced concrete outer wall.

[0062] Preferably, the cast-in-place structure thermal insulation integrated fair-faced concrete outer wall is provided with a fifth thermal 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 thermal insulation layer and the ground.

[0063] The cast-in-place structure thermal insulation integrated fair-faced concrete outer wall is provided with a sixth thermal insulation layer on the outer side wall of the cast-in-place structure thermal insulation integrated fair-faced concrete outer wall below the ground in the outdoor direction and the outer side wall of the support column.

[0064] In the utility model, the above technical solutions can be combined with each other to realize more preferred combination solutions. Other features and advantages of the utility model will be described in the following content, and some advantages can become apparent from the description or can be understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the content specially pointed out in the description and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0065] The drawings are only used for the purpose of showing the specific embodiments and are not considered as limiting the utility model, and the same reference signs represent the same parts in the whole drawings.

[0066] Figure 1 The structure of the cast-in-place structure thermal insulation integrated fair-faced concrete outer wall in the specific embodiment is shown in the structure diagram.

[0067] Figure 2Vertical cross-sectional view of the node configuration for Example Two in the Specific Embodiment;

[0068] Figure 3 Vertical cross-sectional view of the node configuration for Example Three in the Specific Embodiment;

[0069] Figure 4 Vertical cross-sectional view of the node configuration for Example Four in the Specific Embodiment;

[0070] Figure 5 Vertical cross-sectional view of the node configuration for Example Five in the Specific Embodiment.

[0071] Reference Signs:

[0072] 1-outer wall; 101-overlapping part; first section 1a; second section 1b; 11-bare concrete wall; 111-protection coating; 12-reinforced frame; 121-horizontal cross reinforcement; 122-vertical longitudinal reinforcement; 123-tension reinforcement; 2-interior structural floor; 21-first insulation layer; 22-first buffer layer; 23-second insulation layer; 24-first moisture-proof layer; first construction joint 25; interior structural floor reinforcement 26; 3-top structural floor; 31-top reinforced structure; 32-second buffer layer; 33-third insulation layer; 34-fourth insulation layer; 35-first waterproof layer; 36-second construction joint; 4-cantilever balcony structure; 41-structural floor; 42-balcony plate; 421-upper reinforcement mesh; 422-lower reinforcement mesh; 423-intermediate tension reinforcement; 424-second waterproof layer; 425-drainage structure; 426-balcony side wall; 43-third buffer layer; 5-bottom structure; 51-structural foundation; 511-base; 512-support column; 513-limiting part; 52-ground; 521-fifth insulation layer; 522-second moisture-proof layer; 53-waterproof coiled material; 54-sixth insulation layer; 55-seventh insulation layer. DETAILED DESCRIPTION

[0073] The preferred embodiments of the present application will be described in detail below with reference to the drawings, in which the same or similar components are denoted by the same reference numerals, for the purpose of illustrating the principles of the present application, and are not intended to limit the scope of the present application.

[0074] In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited, the term "connected" should be interpreted broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected, which can be mechanically connected, or electrically connected, which can be directly connected, or indirectly connected through an intermediate medium. Those skilled in the art can understand the specific meaning of the above-mentioned term in the present application according to the specific circumstances.

[0075] The terms "top", "bottom", "over", "under" and "on" used throughout the description are relative to the relative position of the components of the device, for example the relative position of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.

[0076] The general working surface of the utility model can be a plane or a curved surface, can be inclined or horizontal. For the convenience of explanation, the utility model embodiment is placed on a horizontal plane and used on the horizontal plane, and "high and low" and "up and down" are defined accordingly.

[0077] Embodiment one

[0078] The embodiment discloses a cast-in-place structure heat preservation integrated fair-faced concrete outer wall (hereinafter referred to as an outer wall), as shown in Figure 1 The outer wall 1 comprises:

[0079] The fair-faced concrete wall body 11 has a heat conductivity coefficient less than 0.5 W / m.k and a 28d standard curing compressive strength greater than 30 Mpa;

[0080] The steel reinforcement frame 12 is located in the fair-faced concrete wall body 11 to provide a support framework for the fair-faced concrete wall body 11.

[0081] The material of the fair-faced concrete wall body 11 is high-thermal-resistance lightweight aggregate concrete, and the selection criteria are that the heat conductivity coefficient of the material needs to be less than 0.5 W / m.k and the 28d standard curing compressive strength of the high-thermal-resistance structure bearing cast-in-place fair-faced concrete is greater than 30 Mpa.

[0082] The high-thermal-resistance lightweight aggregate concrete comprises the following components in parts by weight: fast-setting and fast-hardening high-Belite sulphoaluminate cement 501-860.3 parts, lightweight aggregate 281-431.5 parts, cellulose 0.05-0.17 parts, silica fume 20.0-155.8 parts, water 205-265 parts, water reducing agent 2.70-5.04 parts, defoaming agent 0.92-1.98 parts, high molecular polymer glue powder 2.67-7.94 parts, retarder 1.65-5.18 parts, fly ash 0-289.1 parts, quick-setting agent 0-0.15 parts, pigment 0-86.4 parts and glass fiber 0-1.32 parts; wherein the lightweight aggregate comprises at least one of hollow glass microbeads, fly ash ceramsite and shale ceramsite.

[0083] The fast-setting and fast-hardening high-Belite sulphoaluminate cement comprises at least one of white anti-cracking fast-setting and fast-hardening high-Belite sulphoaluminate cement, anti-cracking fast-setting and fast-hardening high-Belite sulphoaluminate cement, white super-high-strength fast-setting and fast-hardening high-Belite sulphoaluminate cement and high-strength fast-setting and fast-hardening high-Belite sulphoaluminate cement.

[0084] The silica ash includes ordinary silica ash and / or white silica ash.

[0085] The water reducing agent includes at least one of polycarboxylic acid water reducing agent, melamine water reducing agent and triazine water reducing agent.

[0086] The water reducing agent includes at least one of polycarboxylic acid water reducing agent, melamine water reducing agent and triazine water reducing agent.

[0087] The high-molecular polymer powder includes at least one of redispersible vinyl acetate / ethylene copolymer powder, carboxyl group block copolymer powder and acrylic polymer powder.

[0088] The retarder includes at least one of sodium citrate, citric acid, sodium gluconate and zinc carbonate.

[0089] The accelerator includes lithium carbonate and / or lithium sulfate.

[0090] The pigment includes at least one of iron oxide pigment, titanium white and chromium oxide green.

[0091] The fly ash is fly ash of more than two levels.

[0092] The glass fiber includes alkali-resistant glass fiber.

[0093] The cellulose includes at least one of methyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose and carboxymethyl cellulose.

[0094] The high-thermal-resistance light aggregate concrete further includes Portland cement, and a proportion of the Portland cement replacing the fast-setting and fast-hardening high-Belite sulfoaluminate cement is less than or equal to 80%.

[0095] The utility model discloses a fast-setting and fast-hardening high-Belite sulfoaluminate cement is used as main cementitious material, and the early strength of high-thermal-resistance light aggregate concrete is improved to improve production efficiency. Light aggregate is the core material, and each raw material cooperates with each other, and the more high fluidity, non-floating, low thermal conductivity, high strength, non-cracking, water-free decorative concrete is prepared. The high-thermal-resistance light aggregate concrete surface does not crack, basically has no bubble, has no big color difference, the surface is neat and smooth, and the water retention performance is good, thereby water curing is avoided, the process is simplified, and the water curing is avoided. The high-thermal-resistance light aggregate concrete has high tensile bonding strength and can be used for firm bonding with other concrete base surfaces.

[0096] Exemplarily, the high-thermal-resistance light aggregate concrete is composed of the following raw materials: 42.5-grade white anti-cracking double-fast cement 601kg, 920 silica ash 61.4kg, hollow glass microbead (particle size 0.15-0.3mm, bulk density (460±40Kg / m 3The 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. 3 The 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.

[0097] 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.

[0098] High thermal resistance lightweight aggregate concrete is composed of the following raw materials: 774.5 kg of grade 72.5 white ultra-high strength quick-setting cement, 57.0 kg of white silica fume, 3.42 kg of iron oxide black, 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 239.4 kg. 3 The mixture consists of 50.1 kg of PC8300 water-reducing agent, 4.56 kg of P803 defoamer, 1.71 kg of lithium carbonate, 0.11 kg of carboxymethyl cellulose, 6.5 kg of 5044 adhesive powder, 1.14 kg of sodium citrate, 0.57 kg of sodium gluconate, and 228 kg of water, with a water-to-material ratio of 0.2.

[0099] Specifically, the composition of high thermal resistance lightweight aggregate concrete is described in CN115073106B. Examples that meet the requirements of thermal conductivity less than 0.5W / mk and 28-day standard curing compressive strength greater than 30MPa can be used in this utility model, and will not be described in detail here.

[0100] Preferably, the steel reinforcement frame 12 includes:

[0101] Two steel bars arranged in parallel, the steel bars include a plurality of horizontal cross bars 121 and vertical longitudinal bars 122 interwoven;

[0102] A plurality of reinforcing bars 123 are arranged between the two steel bars, and the two ends of the reinforcing bars are connected with the two steel bars respectively. Preferably, 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. The reinforcing bar 123 is straightened between the two steel bars, that is, the reinforcing bar 123 is perpendicular to the two steel bars.

[0103] The preparation method of the outer wall 1 comprises the following steps:

[0104] S101: arranging the steel bar frame 12 according to the design;

[0105] S102: arranging the model matched with the fair-faced concrete wall body according to the design;

[0106] S103: pouring the high-thermal-resistance lightweight aggregate concrete, removing the model after curing to obtain the outer wall 1.

[0107] The fair-faced concrete wall body 11 is externally provided with a protective coating 111, that is, the outer side of the fair-faced concrete wall body 11 is coated with a protective agent. The protective agent is made of a material with good environmental protection, weather resistance, stain resistance and water repellency, so as to further improve the use effect of the outer wall. Exemplarily, the protective agent is a fluorocarbon resin fair-faced concrete protective agent or a silicon resin fair-faced concrete protective agent. The fluorocarbon resin fair-faced concrete protective agent is a polymer with a fluorocarbon bond (F-C) in the molecular main chain or side chain. The carbon-fluorine bond in the molecule has the highest bond energy of 485 kJ / mol among the known bond energies, and the F-C bond is very stable. The fluorocarbon resin can transmit more than 95% of the medium and long waves in the ultraviolet light region (220 nm-400 nm) of sunlight. Only the ultraviolet light with a wavelength of not more than 220 nm can break the F-C bond, but the proportion of these short-wave ultraviolet rays in sunlight is very small, and they are easily absorbed by the atmospheric ozone layer. Therefore, the fair-faced protective agent coating containing fluorocarbon resin has excellent weather resistance. The higher the content of fluorine, the better the weather resistance of the material. At present, whether domestic or imported, all the fair-faced concrete protective agents on the market are silicon resin fair-faced concrete protective agents, and the quality guarantee period is within 10 years.

[0108] Embodiment Two

[0109] The embodiment discloses a node structure of a cast-in-place structure thermal insulation integrated fair-faced concrete outer wall, which can be used at least for the connection between a building outer wall (the building outer wall adopts the outer wall provided in Embodiment One, that is, the cast-in-place structure thermal insulation integrated fair-faced concrete outer wall) and an indoor structure floor slab, such as Figure 2 as shown, comprising:

[0110] The cast-in-place structure heat preservation integrated fair-faced concrete exterior wall 1 disclosed by the embodiment one;

[0111] The indoor structure floor 2 is partially inserted into the exterior wall 1, that is, the connection between the exterior wall and the indoor structure floor adopts a structural simply supported connection mode.

[0112] The node structure in the embodiment can be applied to the connection between the floor (indoor structure floor) from the first floor to the next top floor of a high-rise building (building with more than three floors) and the exterior wall 1.

[0113] To avoid the generation of cold and hot bridges, the outer side of the indoor structure floor 2 is provided with a first heat preservation layer 21, which can also prevent the indoor and outdoor temperature difference from being too large to cause local condensation, mildew and dripping on the inner side of the exterior wall. The first heat preservation layer is an extruded polystyrene board with a thickness not less than 30 mm.

[0114] The effective length of the indoor structure floor 2 extending into the exterior wall 1 is not less than 100 mm, so as to ensure the connection strength between the indoor structure floor and the exterior wall and improve the stability of the node structure.

[0115] To further improve the connection strength between the indoor structure floor 2 and the exterior wall 1, the vertical longitudinal reinforcement 122 on the inner side (close to the indoor side) of the steel reinforcement frame 12 longitudinally penetrates the indoor structure floor 2, and the steel reinforcement in the indoor structure floor (indoor structure floor steel reinforcement 26) is bound with the vertical longitudinal reinforcement 122 longitudinally penetrating the indoor structure floor.

[0116] During the binding of the steel reinforcement frame 12 and the indoor structure floor steel reinforcement, the overlapping length of the binding lap joint of the longitudinal tensile reinforcement should be not less than 350 mm, and the overlapping length of the binding lap joint of the longitudinal compressive reinforcement should be not less than 250 mm, so as to ensure the safety and reliability of the structure in use.

[0117] A first buffer layer 22 is arranged at the joint between the indoor structure floor 2 and the exterior wall, specifically, the first buffer layer 22 is arranged inward at the joint between the indoor structure floor 2 and the exterior wall, so as to prevent fatigue damage of the contact surface due to long-term mutual extrusion of the materials. Preferably, the inward extension length of the first buffer layer 22 is less than or equal to the effective length of the indoor structure floor 2 extending into the exterior wall 1, that is, the inward extension length of the first buffer layer 22 is less than or equal to 100 mm. Exemplarily, the first buffer layer 22 is a rubber pad.

[0118] To preserve heat, a second heat preservation layer 23 is arranged on the indoor structure floor within a range of 500±50 mm from the indoor direction of the exterior wall, that is, the second heat preservation layer 23 is arranged on the side of the indoor structure floor 2 close to the exterior wall within a range of 500±50 mm. The thickness of the second heat preservation layer is 30-50 mm. Preferably, a first moisture-proof layer 24 is further arranged between the second heat preservation layer 23 and the indoor structure floor.

[0119] The construction method of the node structure in the embodiment comprises the following steps:

[0120] S201: constructing the outer wall to the first construction joint 25 (flush with the upper surface of the indoor structural floor slab), and reserving the vertical longitudinal reinforcement required by the design;

[0121] S202: binding the indoor structural floor slab reinforcement 26, while the corresponding vertical longitudinal reinforcement is longitudinally passed through the indoor structural floor slab reinforcement structure, and the indoor structural floor slab reinforcement is bound with the longitudinally passed vertical longitudinal reinforcement;

[0122] S203: setting the formwork matched with the indoor structural floor slab according to the design, and simultaneously setting the first insulation layer and the first buffer layer, pouring ordinary concrete, and removing the model after curing to obtain the indoor structural floor slab;

[0123] S204: binding the reinforcement frame of the upper outer wall according to the design, and setting the formwork matched with the reinforcement frame;

[0124] S205: pouring the high-thermal-resistance lightweight aggregate concrete, removing the model after curing, laying the first moisture-proof layer and the second insulation layer on the indoor structural floor slab, and obtaining the node structure of the embodiment provided with the outer wall.

[0125] Embodiment three

[0126] The embodiment discloses another node structure provided with a cast-in-situ structure insulation integrated fair-faced concrete outer wall, and can be used at least for the connection between the outer wall of the top floor of a building (the outer wall of the top floor of the building is the outer wall provided in Embodiment One, that is, the cast-in-situ structure insulation integrated fair-faced concrete outer wall) and the top floor structural floor slab, as shown in Figure 3 , comprising:

[0127] The cast-in-situ structure insulation integrated fair-faced concrete outer wall 1 disclosed in Embodiment One, wherein the outer wall is provided with a lap joint portion 101;

[0128] The top floor structural floor slab 3 is at least partially located on the lap joint portion 101, and specifically, one end of the top floor structural floor slab 3 is arranged on the lap joint portion 101.

[0129] The longitudinal section of the outer wall in the embodiment is similar to an "h" shape, and specifically, the outer wall comprises a first segment 1a and a second segment 1b connected in sequence, the cross section of the first segment 1a is larger than that of the second segment 1b, the outer sides of the first segment 1a and the second segment 1b are flush, and the inner side of the second segment 1b is perpendicular to the top of the first segment 1a.

[0130] The longitudinal steel bars inside the steel bar frame of the second section 1b extend downward into the steel bar frame of the first section 1a, and the longitudinal steel bars inside the second section are tied together with the tie bars of the steel bar frame of the first section to improve the structural stability of the outer wall. Preferably, the length of the longitudinal steel bars inside the second section extending into the first section is not less than 150 mm.

[0131] The lap joint 101 is jointly defined by the first section and the second section, and the lap joint 101 is located at the top of the first section and inside the second section.

[0132] The width of the lap joint 101 is not less than 100 mm, that is, the length of the top floor slab 3 located in the lap joint 101 is not less than 100 mm. This ensures the connection strength of the top floor slab and the outer wall and improves the stability of the node structure.

[0133] To further improve the connection strength of the top floor slab 3 and the outer wall 1, the vertical longitudinal steel bars inside the steel bar frame of the first section 1a longitudinally pass through the top steel bar structure 31 of the top floor slab 3 and then outwardly bend and extend into the steel bar frame of the second section to be connected with the steel bar frame of the second section, and the longitudinally passing vertical steel bars are respectively tied with the top steel bar structure 31 and the two steel bar meshes of the second section.

[0134] During the tying process of the outer wall steel bar frame and the steel bar frame and the top steel bar structure, the lap joint length of the longitudinally tensile steel bars tied to the lap joint should be not less than 350 mm, and the lap joint length of the longitudinally compressive steel bars should be not less than 250 mm, to ensure the safety and reliability of the structure in use.

[0135] The top floor slab 3 and the outer wall are provided with a second buffer layer 32 at the lap joint, specifically, the second buffer layer 32 is provided inside the intersection of the top floor slab 3 and the outer wall to prevent fatigue failure of the contact surface due to long-term mutual extrusion of the materials. Preferably, the length of the second buffer layer 32 extending inward is less than or equal to the effective lap joint length of the top floor slab 3 and the outer wall 1, that is, the length of the second buffer layer 32 extending inward is less than or equal to 100 mm. Exemplarily, the second buffer layer 32 is a rubber pad.

[0136] To avoid the formation of cold and hot bridges, a third insulation layer 33 is laid on the outside of the top floor slab 3, which can also prevent the phenomena of condensation, mold and dripping water on the inside of the outer wall due to a large temperature difference between indoor and outdoor. The third insulation layer is an extruded polystyrene board with a thickness of not less than 30 mm.

[0137] In order to keep warm, the fourth insulation layer 34 is laid on the top floor slab, and the first waterproof layer 35 is laid on the fourth insulation layer 34. Preferably, the thickness of the fourth insulation layer is 50-150mm, and the fourth insulation layer is an extruded polystyrene board. The material of the first waterproof layer is 4+3 SBS thermoplastic polyester waterproof roll material, and preferably, two layers of the first waterproof layer are laid, one layer is 4mm and the other layer is 3mm. In actual application, the material thickness, structure form and roof heat transfer coefficient of the fourth insulation layer and the waterproof layer should meet the energy saving and insulation requirements of the building location.

[0138] The construction method of the node structure in the embodiment includes the following steps:

[0139] S301: The top layer outer wall is constructed to the position of the second construction joint 36 (flush with the upper surface of the top floor slab), and the vertical longitudinal reinforcement required by the design is reserved;

[0140] S302: The top layer reinforcement structure is bound, and the corresponding vertical longitudinal reinforcement is longitudinally passed through the top layer reinforcement structure, and the top layer reinforcement structure is bound with the longitudinally passed vertical longitudinal reinforcement;

[0141] S303: The formwork matched with the indoor structure floor slab is set according to the design, and the third insulation layer and the second buffer layer are set at the same time, the ordinary concrete is poured, and the model is removed after curing to obtain the top floor slab;

[0142] S304: The reinforcement frame of the top layer outer wall is continuously bound according to the design, and the formwork matched with the reinforcement frame is set;

[0143] S305: The high-thermal-resistance lightweight aggregate concrete is used for pouring, the model is removed after curing, the fourth insulation layer and the first waterproof layer are laid on the top floor slab, and the node structure provided with the outer wall in the embodiment is obtained.

[0144] Embodiment four

[0145] The embodiment discloses a third node structure provided with a cast-in-place structure insulation integrated fair-faced concrete outer wall, and can be used at least for the connection between a building outer wall (the building outer wall adopts the outer wall provided in the embodiment one, i.e., the cast-in-place structure insulation integrated fair-faced concrete outer wall) and a cantilever balcony structure, as shown in Figure 4 , and includes:

[0146] The cast-in-place structure insulation integrated fair-faced concrete outer wall 1 disclosed in the embodiment one;

[0147] The cantilever balcony structure 4 includes a structure floor slab 41 and a balcony slab 42, and the structure floor slab 41, the balcony slab 42 and the outer wall 1 are connected together, and specifically, the outer side of the structure floor slab 41, the top end of the outer wall 1 and the inner side of the balcony slab 42 are connected together.

[0148] In order to effectively avoid the cold bridge heat conduction of the balcony slab, the balcony slab 42 is integrally cast with the outer wall 1, that is, both of them are cast by using high thermal resistance light aggregate concrete.

[0149] In order to ensure the stability and safety of the structure, the reinforcing structures of the structural floor 41, the balcony slab 42 and the outer wall 1 are bound together.

[0150] Specifically, the reinforcing structure of the balcony slab 42 includes an upper reinforcing mesh 421, a lower reinforcing mesh 422 and a plurality of intermediate reinforcing bars 423 between the upper reinforcing mesh 421 and the lower reinforcing mesh 422. Preferably, the upper reinforcing mesh 421 is arranged above the lower reinforcing mesh 422 and is horizontally arranged, and the lower reinforcing mesh 422 is arranged to be gradually inclined from outside to inside, so as to form a wedge-shaped reinforcing structure, so that the balcony slab has stronger and more stable support.

[0151] The lower reinforcing mesh 422 is inserted into the reinforcing frame of the outer wall and is bound with the horizontal transverse reinforcing bars and the vertical longitudinal reinforcing bars of the reinforcing frame, respectively. Preferably, the lower reinforcing mesh 422 extends through the outer reinforcing mesh of the reinforcing frame, and then continues to extend to the outside of the inner reinforcing mesh of the reinforcing frame and then bends downward. During the extension, the lower reinforcing mesh 422 is first bound with the horizontal transverse reinforcing bars and the vertical longitudinal reinforcing bars of the outer reinforcing mesh, and then is bound with the horizontal transverse reinforcing bars and the vertical longitudinal reinforcing bars of the inner reinforcing mesh.

[0152] The inner corner of the top end of the reinforcing frame of the outer wall is bound with the outer end of the reinforcing structure of the structural floor.

[0153] In order to further strengthen the connection strength of the structural floor 41, the balcony slab 42 and the outer wall 1, the inner reinforcing mesh of the outer wall extends upward and longitudinally through the reinforcing structure of the structural floor, and then is bent outward to form the upper reinforcing mesh 421 of the balcony slab 42.

[0154] The second waterproof layer 424 is arranged on the balcony slab 42, and the material of the second waterproof layer is 4+3 SBS thermoplastic polyester tire waterproof roll material. The second waterproof layer 424 is further provided with a drainage structure 425 for draining water accumulated on the balcony.

[0155] The connection between the structural floor 4 and the outer wall is provided with a third buffer layer 43. Specifically, the third buffer layer 43 is arranged inward at the joint between the structural floor 4 and the outer wall to prevent fatigue failure of the contact surface due to long-term mutual extrusion of the materials. Exemplarily, the third buffer layer 43 is a rubber pad.

[0156] The outer side of the balcony slab 42 can be provided with a floor-to-ceiling window, or a balcony side wall 426 integrally cast with the same. Preferably, the structure of the balcony side wall 426 is the same as that of the outer wall, and the reinforcement frame of the balcony side wall is staggered and bound with the reinforcement structure of the balcony slab 42, and the balcony side wall 426 is also cast with high-thermal-resistance lightweight aggregate concrete.

[0157] Embodiment Five

[0158] The present embodiment discloses a fourth node structure of cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall, which can be used at least for the connection between the outer wall of the building bottom layer (the outer wall of the building bottom layer is the outer wall provided in the embodiment one, i.e. the cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall) and the bottom layer structure, as shown in Figure 5 The present embodiment discloses a fourth node structure of cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall, which can be used at least for the connection between the outer wall of the building bottom layer (the outer wall of the building bottom layer is the outer wall provided in the embodiment one, i.e. the cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall) and the bottom layer structure, as shown in

[0159] The bottom layer structure 5 includes a structural foundation 51 and a ground 52.

[0160] The cast-in-situ structure thermal insulation integrated fair-faced concrete outer wall 1 disclosed in the embodiment one is arranged on the structural foundation 51.

[0161] Specifically, the structural foundation 51 is located below the ground 52, and the outer wall 1 is partially inserted into the ground and located directly above the structural foundation 51.

[0162] The structural foundation 51 includes a base 511 and a support column 512, and the support column is located on the base. The cross section of any part of the base 511 is larger than that of the support column 512, and the cross section of the support column 512 is larger than that of the outer wall 1. The shape of the support column 512 matches that of the outer wall. In this way, stable support is provided for the outer wall.

[0163] The part of the outer wall located below the ground and the side wall of the support column 512 are paved with a waterproof coiled material 53, which effectively prevents water from rising above the ground along the inner part of the outer wall due to capillary action, thereby avoiding the adverse effects of underground water on the indoor thermal environment comfort. The waterproof coiled material 53 is one of 3mm-thick SBS polyester tire waterproof coiled material, 1.5mm polyethylene polypropylene waterproof material, or 1.5mm EPDM (ethylene propylene diene monomer) rubber waterproof coiled material.

[0164] To improve the support strength of the support column for the outer wall, the support column 512 is provided with a limiting part 513 embedded with the outer wall. The limiting part 513 is located on both sides of the outer wall, and the longitudinal section of the limiting part 513 is a right triangle. One of the right angles of the right triangle is close to the outer wall, and the other is close to the top end of the support column 512, so as to more stably support the outer wall.

[0165] In order to keep warm, the outer wall is provided with a fifth heat preservation layer 521 in the range of 1000±100mm above the ground in the indoor direction, that is, the fifth heat preservation layer 521 is arranged on the side of the indoor ground close to the outer wall in the range of 1000±100mm.

[0166] In order to avoid cold and hot bridges, the outer wall is provided with a sixth heat preservation layer 54 on the outer wall side wall and the outer side wall of the supporting column (the side wall in the outdoor direction) below the ground in the outdoor direction. Preferably, the sixth heat preservation layer is an extruded polystyrene board with a thickness of 30±5mm. The outer wall is provided with a seventh heat preservation layer 55 in the range of 1000±100mm above the ground in the outdoor direction. By arranging the horizontal seventh heat preservation layer and the vertical sixth heat preservation layer in the outdoor direction, the heat preservation and insulation performance of the weak position of the outer wall can be improved, and the cold and hot bridges can be avoided.

[0167] It should be noted that, Figure 5 In order to express clearly, the steel bars of the outer wall and the underlying structure are not drawn.

[0168] The construction method of the node structure in the embodiment comprises the following steps:

[0169] S501: building a pouring structure foundation, and the structure foundation is poured with ordinary concrete;

[0170] S502: binding the steel bar frame of the outer wall, arranging the formwork matched with the steel bar frame according to the design, pouring with high-thermal-resistance light aggregate concrete, and removing the model after curing;

[0171] S503: sequentially arranging the waterproof coiled material and the sixth heat preservation layer outside the outer wall and the structure foundation, filling the soil to form the indoor and outdoor ground, and then respectively laying the second moisture-proof layer, the fifth heat preservation layer and the seventh heat preservation layer, so as to obtain the node structure provided with the outer wall in the embodiment.

[0172] The cast-in-place structure heat preservation integrated fair-faced concrete outer wall of the utility model is an integrated structure, does not adopt the composite structure system such as "sandwich" heat preservation, and has excellent high-thermal-resistance and self-heat preservation performance. The outer wall of the utility model adopts high-thermal-resistance light aggregate concrete, which has higher thermal resistance, lower thermal conductivity and better energy-saving effect than ordinary concrete, so that the extruded polystyrene board heat preservation layer of the outer wall can be cancelled.

[0173] The utility model can solve the problems of the "sandwich" cast-in-place structure heat preservation integrated fair-faced concrete outer wall design building, such as complex structure and construction technical measures, high labor cost, influence of cold and hot bridges on the heat preservation and insulation performance of the outer wall, and large wall self-weight.

[0174] The utility model discloses a corresponding improvement measure is provided to the shortcoming in the design and construction of fair-faced concrete building. The high thermal resistance cast-in-place structure heat preservation integrated fair-faced concrete outer wall adopts light aggregate concrete raw material, combines the modeling and function of fair-faced concrete outer wall, structural system, heat preservation enclosure system, thermal structure, waterproof structure and other system characteristics, adopts simple homogeneous outer wall construction level to replace the current " sandwich " composite structure, so that the building structural system is more light and safe, and the construction technical difficulty is reduced, realizes the lightweight of concrete material and the reduction of construction and construction measures.

[0175] The utility model discloses only in the building outer wall with heat preservation and thermal insulation requirement adopts high thermal resistance structure load-bearing cast-in-place fair-faced concrete, and indoor structural floor, roof board, inner wall, indoor beam column still adopt ordinary concrete construction, and the structural system is simple and reasonable, and the design and construction principle is same with ordinary concrete building, and the cost is low and economic.

[0176] Because the fair-faced concrete building outer wall is generally complex, and the energy-saving effect is not good, the construction technology and cost are high, therefore the application scene is mainly high-grade building or place such as museum, exhibition hall at present, and the application range is greatly limited. On the other hand, with the building industry entering the stable development period, city renewal and rural reconstruction upgrade become the development direction of building industry in the future, and the number of small-scale new micro-update projects will increase. The utility model is green low-carbon building construction technology, and the energy-saving and consumption-reducing potential of fair-faced concrete enclosure structure is maximized, the carbon emission level of concrete building is reduced, and the building cost and construction difficulty are reduced, so the application range of fair-faced concrete can be expanded, the industrial added value is improved, the application scene of material and technology is widened, and the industry development trend and emerging business needs are met.

[0177] The above describes only the preferred specific embodiment of the utility model, but the protection scope of the utility model does not limit to this, and any person skilled in the art person skilled in the art in the technical range disclosed by the utility model can easily think of the change or replacement in the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall, characterized in that, The present application relates to a cast-in-situ structure insulation integrated fair-faced concrete outer wall, and a node structure for connecting an outer wall and a structural floor slab. The node structure comprises: a cast-in-situ structure insulation integrated fair-faced concrete outer wall according to claim 1 or 2; a structural floor slab partially inserted into the cast-in-situ structure insulation integrated fair-faced concrete outer wall; a first insulation layer applied to an outer side of the structural floor slab; and an effective length of the structural floor slab extending into the cast-in-situ structure insulation integrated fair-faced concrete outer wall is not less than 100 mm.

2. The cast-in-place thermal insulation integrated fair-faced concrete exterior wall according to claim 1, characterized in that, vertical longitudinal reinforcement in the steel reinforcement frame penetrates the structural floor slab, and the reinforcement in the structural floor slab is bound to the vertical longitudinal reinforcement penetrating the structural floor slab. In the steel reinforcement frame and the binding process of the reinforcement in the steel reinforcement frame and the structural floor slab, the overlap length of the binding joint of the longitudinal tensile reinforcement should be not less than 350 mm, and the overlap length of the binding joint of the longitudinal compressive reinforcement should be not less than 250 mm. A first buffer layer is arranged at a joint of the structural floor slab and the cast-in-situ structure insulation integrated fair-faced concrete outer wall.

3. A node structure of an in-situ construction thermal insulation integrated fair-faced concrete exterior wall, characterized in that, The node structure comprises: a cast-in-situ structure insulation integrated fair-faced concrete outer wall according to claim 1 or 2, provided with a joint portion; a top structural floor slab at least partially located on the joint portion; and The cast-in-situ structure insulation integrated fair-faced concrete outer wall comprises: a fair-faced concrete wall body with a thermal conductivity of less than 0.5 W / m.k and a 28d standard curing compressive strength greater than 30 MPa; 4. The node structure of claim 3, wherein, a steel reinforcement frame located in the fair-faced concrete wall body to provide a support framework for the fair-faced concrete wall body. The cast-in-situ structure insulation integrated fair-faced concrete outer wall comprises an upper first segment and a lower second segment connected to each other, a cross section of the first segment is greater than that of the second segment, outer side surfaces of the first segment and the second segment are flush, and an inner side surface of the second segment is perpendicular to a top portion of the first segment.

5. The node configuration of claim 4, wherein, Longitudinal reinforcement in the steel reinforcement frame of the second segment extends downward into the steel reinforcement frame of the first segment, and the longitudinal reinforcement in the second segment is bound to the tie reinforcement of the steel reinforcement frame of the first segment.

6. A node structure of an in-situ construction thermal insulation integrated fair-faced concrete exterior wall, characterized in that, The joint portion is defined by the first segment and the second segment, and is located at a top portion of the first segment and at an inner side of the second segment. A width of the joint portion is not less than 100 mm. ​ ​ ​ ​ 7. The node configuration of claim 6, wherein, ​ ​ ​ ​ The vertical longitudinal reinforcement inside the first segment of the reinforcement frame is longitudinally arranged upward through the top layer of the top floor slab, and then is bent outward to extend into the second segment of the reinforcement frame and is connected with the second segment of the reinforcement frame, and the vertical longitudinal reinforcement is respectively bound with the top layer of the top floor slab and the two reinforcement meshes of the second segment; The top floor slab is provided with a second buffer layer at the lap joint of the cast-in-situ structure and the insulating integrated fair-faced concrete outer wall; The outer side of the top floor slab is provided with a third insulation layer; The top floor slab is provided with a fourth insulation layer, and the first waterproof layer is arranged on the fourth insulation layer.

8. A node structure of an in-situ construction thermal insulation integrated fair-faced concrete exterior wall, characterized in that, At least can be used for the connection between the building outer wall and the cantilevered balcony structure, the node structure comprises: The cast-in-situ structure insulating integrated fair-faced concrete outer wall according to claim 1 or 2; The cantilevered balcony structure comprises a structure floor slab and a balcony slab, and the structure floor slab, the balcony slab and the cast-in-situ structure insulating integrated fair-faced concrete outer wall are connected together; The cast-in-situ structure insulating integrated fair-faced concrete outer wall comprises: The fair-faced concrete wall body has a heat conductivity coefficient of less than 0.5 W / m.k and a 28d standard curing compressive strength of greater than 30 Mpa; The reinforcement frame is arranged in the fair-faced concrete wall body to provide a support framework for the fair-faced concrete wall body.

9. The node structure of claim 8, wherein, The reinforcement structure of the balcony slab comprises an upper reinforcement mesh and a lower reinforcement mesh, and a plurality of intermediate reinforcement bars arranged between the upper reinforcement mesh and the lower reinforcement mesh; The upper reinforcement mesh is arranged above the lower reinforcement mesh and is horizontally arranged, and the lower reinforcement mesh is gradually arranged downward from the outside to the inside; The lower reinforcement mesh is inserted into the reinforcement frame of the cast-in-situ structure insulating integrated fair-faced concrete outer wall and is bound with the horizontal transverse reinforcement and the vertical longitudinal reinforcement of the reinforcement frame, respectively; The inner corner of the top end of the reinforcement frame of the cast-in-situ structure insulating integrated fair-faced concrete outer wall is bound with the outer end of the reinforcement structure of the structure floor slab; The inner side reinforcement mesh of the cast-in-situ structure insulating integrated fair-faced concrete outer wall extends upward and longitudinally through the reinforcement structure of the structure floor slab, and then is bent outward to form the upper reinforcement mesh of the balcony slab.

10. The node structure of claim 9, wherein, The balcony slab is provided with a second waterproof layer; The second waterproof layer is further provided with a drainage structure.

11. A node structure of an in-situ construction thermal insulation integrated fair-faced concrete exterior wall, characterized in that, At least can be used for the connection between the building outer wall and the cantilevered balcony structure, the node structure comprises: The bottom layer structure comprises a structure foundation and a ground; The cast-in-situ structure insulating integrated fair-faced concrete outer wall according to claim 1 or 2 is arranged on the structure foundation; The cast-in-situ structure insulating integrated fair-faced concrete outer wall comprises: The fair-faced concrete wall body has a heat conductivity coefficient of less than 0.5 W / m.k and a 28d standard curing compressive strength of greater than 30 Mpa; The reinforcement frame is arranged in the fair-faced concrete wall body to provide a support framework for the fair-faced concrete wall body.

12. The node structure of claim 11, wherein, The structure foundation is located below the ground, and part of the cast-in-situ structure insulating integrated 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 arranged 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 cast-in-situ structure insulating integrated fair-faced concrete outer wall. The cast-in-place structure heat preservation integrated fair-faced concrete outer wall is located below the ground and the side wall of the support column is paved with a waterproof coiled material; The support column is provided with a limiting part in which the cast-in-place structure heat preservation integrated fair-faced concrete outer wall is embedded, and the limiting part is located on both sides of the cast-in-place structure heat preservation integrated fair-faced concrete outer wall; The cast-in-place structure heat preservation integrated fair-faced concrete outer wall is provided with a fifth heat preservation layer on the ground within a range of 1000±100 mm in the indoor direction, and a moisture-proof layer is further arranged between the fifth heat preservation layer and the ground; The cast-in-place structure heat preservation integrated fair-faced concrete outer wall is provided with a sixth heat preservation layer on the side wall of the cast-in-place structure heat preservation integrated fair-faced concrete outer wall below the ground in the outdoor direction and the outer side wall of the support column.

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