Node structure provided with cast-in-place structure heat preservation integrated bare concrete outer wall

Abstract

The invention relates to a node structure provided with a cast-in-place structure heat-preservation integrated bare concrete outer wall, which can be at least used for connecting a building outer wall and an indoor structure floor slab, and comprises the cast-in-place structure heat-preservation integrated bare concrete outer wall, the indoor structure floor slab is partially inserted into the cast-in-place structure heat preservation integrated bare concrete outer wall; the cast-in-place structure and heat preservation integrated bare concrete outer wall comprises a bare concrete wall body, a heat preservation layer, a heat preservation layer, a heat preservation layer, a heat preservation layer, a heat preservation layer and a heat preservation layer, 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 invention relates to the technical field of building engineering, and in particular to a node structure provided with a cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall. Background Art

[0002] Under the guidance of the national dual carbon (carbon peak and carbon neutrality) goals, the low-carbonization of concrete and cement has also become a focus of industry research. Cast-in-place plain concrete, as an important building material, is an important research direction in the field of green buildings.

[0003] In recent years, cast-in-place plain concrete materials have been increasingly used in domestic and foreign engineering practices. The purity and aesthetics of the material have won the favor of various civil construction projects and municipal engineering projects. However, in practice, this material also has obvious disadvantages in terms of energy saving: when plain concrete is used for building exterior walls, the thermal insulation performance is poor. The thermal conductivity of the material itself is about 1.7W / mk, which does not meet the basic requirements for energy saving in most civil engineering projects.

[0004] In order to meet the thermal insulation requirements of the exterior walls of exposed concrete buildings, the current conventional practice is to use two methods: internal wall insulation or "sandwich" sandwich construction. Internal insulation is to set the insulation layer on the indoor side of the wall. Although it can solve the thermal insulation problem of the exterior wall, it will occupy the area of ​​the indoor space. What is more disadvantageous is that the indoor side of the wall will not be able to achieve the appearance of exposed concrete, which seriously affects the design effect. The "sandwich" structure is an inner and outer two-layer cast-in-place exposed concrete slab plus an extruded polystyrene insulation layer in the middle, which can ensure that both the indoor and outdoor sides of the exterior wall have an exposed effect. However, this construction method is more complex, with many construction processes, complex template production and steel bar binding construction processes, high measures and labor costs and costs, and difficult to locate the insulation layer during construction. Summary of the invention

[0005] In view of the above analysis, an embodiment of the present invention aims to provide a node structure having a cast-in-place structural insulation integrated fair-faced concrete exterior wall, so as to at least solve one of the above problems.

[0006] On the one hand, the present invention provides a node structure provided with a cast-in-place structural insulation integrated fair-faced concrete exterior wall, which can at least be used for connecting a building exterior wall with an indoor structural floor slab, and the node structure includes:

[0007] Cast-in-place structural insulation integrated fair-faced concrete exterior wall;

[0008] The indoor structural floor slab is partially inserted into the cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall;

[0009] Wherein, the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall comprises:

[0010] For the bare concrete wall, the thermal conductivity is less than 0.5W / mk, and the compressive strength after 28 days of standard curing is greater than 30Mpa;

[0011] A steel bar frame is located inside the fair faced concrete wall to provide a supporting framework for the fair faced concrete wall.

[0012] Furthermore, a first thermal insulation layer is applied on the outer side of the indoor structural floor;

[0013] The effective length of the indoor structural floor extending into the cast-in-place structural insulation integrated fair-faced concrete exterior wall is not less than 100 mm.

[0014] Furthermore, the vertical longitudinal bars on the inner side of the steel bar frame vertically penetrate the indoor structural floor slab, and the steel bars in the indoor structural floor slab are tied to the vertical longitudinal bars vertically penetrating the indoor structural floor slab;

[0015] During the binding process of the steel bar frame and the steel bar frame and the indoor structural floor steel bar, the lap length of the longitudinal tension steel bar binding lap joint should not be less than 350mm, and the lap length of the longitudinal compression steel bar lap joint should not be less than 250mm;

[0016] Preferably, a first buffer layer is provided at the overlap between the indoor structural floor and the cast-in-place structural insulation integrated fair-faced concrete exterior wall.

[0017] On the other hand, the present invention also provides a node structure with a cast-in-place structural insulation integrated fair-faced concrete exterior wall, which can be used at least for connecting the top exterior wall of a building with the top structural floor slab, and the node structure includes:

[0018] Cast-in-place structural insulation integrated fair-faced concrete exterior wall with overlap;

[0019] a top structural floor slab, at least partially located on the overlapped portion;

[0020] Wherein, the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall comprises:

[0021] For the bare concrete wall, the thermal conductivity is less than 0.5W / mk, and the compressive strength after 28 days of standard curing is greater than 30Mpa;

[0022] A steel bar frame is located inside the fair faced concrete wall to provide a supporting framework for the fair faced concrete wall.

[0023] Furthermore, the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall comprises a first section and a second section connected up and down, the cross section of the first section is larger than the cross section of the second section, the outer side surfaces of the first section and the second section are flush, and the inner side surface of the second section is perpendicular to the top of the first section;

[0024] The longitudinal steel bars inside the steel frame of the second section extend downward into the steel frame of the first section, and the longitudinal steel bars inside the second section are tied together with the tension bars of the steel frame of the first section;

[0025] The overlapping portion is defined by the first section and the second section, and is located at the top of the first section and inside the second section;

[0026] Preferably, the width of the overlapping portion is not less than 100 mm.

[0027] Furthermore, the vertical longitudinal bars on the inner side of the first section of the steel frame are passed through the top steel structure of the top structural floor upwards, then bent outwards and extended into the second section of the steel frame to be connected with the second section of the steel frame, and the vertical longitudinal bars are respectively tied to the top steel structure and the two steel meshes of the second section;

[0028] Preferably, a second buffer layer is provided at the joint between the top structural floor and the cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall;

[0029] Preferably, a third insulation layer is applied on the outer side of the top structural floor;

[0030] Preferably, a fourth thermal insulation layer is laid on the top structural floor slab, and a first waterproof layer is laid on the fourth thermal insulation layer.

[0031] On the other hand, the present invention provides a node structure provided with a cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall, which can at least be used for connecting a building exterior wall with a cantilevered balcony structure, and the node structure comprises:

[0032] Cast-in-place structural insulation integrated fair-faced concrete exterior wall;

[0033] The cantilevered balcony structure includes a structural floor slab and a balcony slab, wherein the structural floor slab, the balcony slab, and a cast-in-place structural insulation integrated fair-faced concrete exterior wall are intersected and connected together;

[0034] Wherein, the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall comprises:

[0035] For the bare concrete wall, the thermal conductivity is less than 0.5W / mk, and the compressive strength after 28 days of standard curing is greater than 30Mpa;

[0036] A steel bar frame is located inside the fair faced concrete wall to provide a supporting framework for the fair faced concrete wall.

[0037] Further, the steel bar structure of the balcony slab includes an upper steel bar mesh and a lower steel bar mesh, and a plurality of intermediate tie bars located between the upper steel bar mesh and the lower steel bar mesh;

[0038] The upper steel mesh is located above the lower steel mesh and is arranged horizontally, and the lower steel mesh is arranged gradually downward from the outside to the inside;

[0039] The lower steel mesh is inserted into the steel frame of the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall, and is respectively tied to the horizontal transverse reinforcement and vertical longitudinal reinforcement of the steel frame;

[0040] The top inner corner of the steel frame of the cast-in-place structural thermal insulation integrated plain concrete exterior wall intersects with the outer end of the steel structure of the structural floor slab for binding;

[0041] The inner steel mesh of the cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall extends upward and vertically penetrates the steel structure of the structural floor slab, and then bends and extends horizontally outward to form the upper steel mesh of the balcony slab;

[0042] Preferably, a second waterproof layer is laid on the balcony slab;

[0043] The second waterproof layer is also provided with a drainage structure.

[0044] Finally, the present invention also provides a node structure with a cast-in-place structure thermal insulation integrated fair-faced concrete outer wall, which can at least be used to connect the outer wall of the bottom floor of a building with the bottom floor structure, and the node structure includes:

[0045] Substructure, including structural foundations and ground;

[0046] Cast-in-place structural insulation integrated fair-faced concrete exterior wall, set on the structural foundation;

[0047] Wherein, the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall comprises:

[0048] For the bare concrete wall, the thermal conductivity is less than 0.5W / mk, and the compressive strength after 28 days of standard curing is greater than 30Mpa;

[0049] A steel bar frame is located inside the fair faced concrete wall to provide a supporting framework for the fair faced concrete wall.

[0050] Furthermore, the structural foundation is located below the ground, and a portion of the cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall is inserted into the ground and is located directly above the structural foundation;

[0051] The structural foundation includes a base and a support column, wherein the support column is located on the base;

[0052] 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 exterior wall;

[0053] Preferably, the part of the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall located below the ground and the side walls of the support columns are paved with waterproof coiled materials;

[0054] Preferably, the support column is provided with a limiting portion embedded in the cast-in-place structure thermal insulation integrated fair-faced concrete outer wall, and the limiting portion is located on both sides of the cast-in-place structure thermal insulation integrated fair-faced concrete outer wall;

[0055] Preferably, a fifth insulation layer is provided on the ground within a range of 1000±100mm from the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall toward the indoor direction, and a moisture-proof layer is also provided between the fifth insulation layer and the ground;

[0056] The side walls of the cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall below the ground facing the outdoors and the outer side walls of the support columns are provided with a sixth thermal insulation layer.

[0057] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0059] Figure 1 It is a structural schematic diagram of a cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall in a specific implementation method;

[0060] Figure 2 A vertical cross-sectional view of a node structure of Example 2 in a specific implementation manner;

[0061] Figure 3 It is a vertical cross-sectional view of the node structure of Example 3 in the specific implementation manner;

[0062] Figure 4 A vertical cross-sectional view of a node structure of Example 4 in a specific implementation manner;

[0063] Figure 5 It is a vertical cross-sectional view of the node structure of Example 5 in the specific implementation manner.

[0064] Reference numerals:

[0065] 1-exterior wall; 101-lap joint; first section 1a; second section 1b; 11-plain concrete wall; 111-protective coating; 12-steel frame; 121-horizontal transverse reinforcement; 122-vertical longitudinal reinforcement; 123-tension reinforcement; 2-indoor structural floor; 21-first insulation layer; 22-first buffer layer; 23-second insulation layer; 24-first moisture-proof layer; first construction joint 25; indoor structural floor reinforcement 26; 3-top structural floor; 31-top reinforcement structure; 32-second buffer layer; 33-third insulation layer; 34-fourth insulation layer; 35-third First waterproof layer; 36-second construction joint; 4-cantilevered balcony structure; 41-structural floor; 42-balcony slab; 421-upper steel mesh; 422-lower steel mesh; 423-middle tensioning bar; 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 membrane; 54-sixth insulation layer; 55-seventh insulation layer. DETAILED DESCRIPTION

[0066] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings 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 used to limit the scope of the present invention.

[0067] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connected" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral connection, which can be a mechanical connection, or an electrical connection, which can be a direct connection, or can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] The terms "top", "bottom", "above", "lower", and "on" used throughout the description are relative to the relative positions of components of a device, such as the relative positions of the top and bottom substrates within a device. It is understood that devices are multifunctional regardless of their orientation in space.

[0069] The common working surface of the present invention can be a plane or a curved surface, can be inclined, or can be horizontal. For the convenience of description, the embodiment of the present invention is placed on a horizontal plane and used on the horizontal plane, and "high and low" and "up and down" are defined in this way.

[0070] Embodiment 1

[0071] This embodiment discloses a cast-in-place structure thermal insulation integrated plain concrete exterior wall (hereinafter referred to as the exterior wall), such as Figure 1As shown, the outer wall 1 comprises:

[0072] Fair-faced concrete wall 11, thermal conductivity <0.5W / mk, 28d standard curing compressive strength greater than 30Mpa;

[0073] The steel bar frame 12 is located inside the fair-faced concrete wall 11 to provide a supporting framework for the fair-faced concrete wall 11 .

[0074] The material of the plain concrete wall 11 is high thermal resistance lightweight aggregate concrete, and the selection standard is that the thermal conductivity of the material needs to be less than 0.5W / mk, and the 28d standard curing compressive strength of the high thermal resistance structure load-bearing cast-in-place plain concrete is greater than 30Mpa.

[0075] The high thermal resistance lightweight aggregate concrete includes the following components in parts by weight: 501 to 860.3 parts of fast-setting and fast-hardening high-belite sulphoaluminate cement, 281 to 431.5 parts of lightweight aggregate, 0.05 to 0.17 parts of cellulose, 20.0 to 155.8 parts of silica fume, 205 to 265 parts of water, 2.70 to 5.04 parts of water reducer, 0.92 to 1.98 parts of defoamer, 2.67 to 7.94 parts of high molecular polymer glue powder, 1.65 to 5.18 parts of retarder, 0 to 289.1 parts of fly ash, 0 to 0.15 parts of accelerator, 0 to 86.4 parts of pigment and 0 to 1.32 parts of glass fiber; wherein the lightweight aggregate includes at least one of hollow glass microspheres, fly ash ceramsite and shale ceramsite.

[0076] The fast-setting and fast-hardening high belite sulphoaluminate cement comprises at least one of white crack-resistant fast-setting and fast-hardening high belite sulphoaluminate cement, crack-resistant fast-setting and fast-hardening high belite sulphoaluminate cement, white ultra-high-strength fast-setting and fast-hardening high belite sulphoaluminate cement and high-strength fast-setting and fast-hardening high belite sulphoaluminate cement.

[0077] The silica fume includes ordinary silica fume and / or white silica fume.

[0078] The water reducer includes at least one of a polycarboxylate water reducer, a melamine water reducer and a melamine water reducer.

[0079] The water reducer includes at least one of a polycarboxylate water reducer, a melamine water reducer and a melamine water reducer.

[0080] The high molecular polymer rubber powder includes at least one of redispersible vinyl acetate / ethylene copolymer rubber powder, carboxylic acid-based block copolymer rubber powder and acrylic polymer rubber powder.

[0081] The retarder includes at least one of sodium citrate, citric acid, sodium gluconate and zinc carbonate.

[0082] The quick-setting agent includes lithium carbonate and / or lithium sulfate.

[0083] The pigment includes at least one of iron oxide pigment, titanium dioxide and chromium oxide green.

[0084] The fly ash is fly ash of level 2 or above.

[0085] The glass fibers include alkali-resistant glass fibers.

[0086] The cellulose includes at least one of methyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose and carboxymethyl cellulose.

[0087] The high thermal resistance lightweight aggregate concrete also includes silicate cement, and the proportion of the silicate cement replacing the fast-setting and fast-hardening high-belite sulphoaluminate cement is ≤80%.

[0088] The present invention adopts fast-setting and fast-hardening high-belite sulphoaluminate cement as the main cementitious material, which improves the early strength of high thermal resistance light aggregate concrete and thus improves production efficiency. Light aggregate is the core material, and the raw materials cooperate with each other to produce decorative concrete with higher fluidity, no floating, low thermal conductivity, high strength, no cracking, and no need for water curing. The surface layer of the high thermal resistance light aggregate concrete does not crack, has basically no bubbles, no large color difference, a smooth and flat surface, and good water retention performance, thereby eliminating water curing, simplifying the process, and avoiding efflorescence caused by water curing to affect the beauty of the concrete surface layer. The high thermal resistance light aggregate concrete has high tensile bonding strength and can be used for a firm bonding with other concrete base surfaces.

[0089] For example, the high thermal resistance lightweight aggregate concrete is composed of the following raw materials: 601 kg of 42.5 grade white anti-cracking double-fast cement, 61.4 kg of 920 silica fume, hollow glass microspheres (particle size 0.15-0.3 mm, bulk density (460 ± 40 kg / m 3 )) is 270.3kg, hollow glass microspheres (particle size 1.0-2.0mm, bulk density (280±30Kg / m 3 )) is 76kg, C900 polycarboxylic acid water reducer is 4kg, P8850 defoamer is 1.33kg, lithium carbonate is 0.1kg, carboxymethyl cellulose is 0.10kg, 5010 rubber powder is 6.14kg, sodium gluconate is 3.59kg and water is 205kg, and the water-to-material ratio is 0.2.

[0090] High thermal resistance lightweight aggregate concrete is composed of the following raw materials: 72.5 grade white ultra-high strength double-fast cement 749kg, white silica fume 55.1kg, chrome green 2.2kg, hollow glass microspheres (particle size 0.15-0.3mm, bulk density (460±40Kg / m 3)) is 231.4kg, hollow glass microspheres (particle size 1.0-2.0mm, bulk density (280±30Kg / m 3 )) is 49.6kg, C900 polycarboxylic acid water reducer is 4.07kg, P803 defoamer is 0.55kg, P8850 defoamer is 1.1kg, lithium carbonate is 0.11kg, carboxymethyl cellulose is 0.11kg, 5044 rubber powder is 6.6kg, Yum zinc carbonate is 1.65kg and water is 220kg, and the water-to-material ratio is 0.2.

[0091] High thermal resistance lightweight aggregate concrete is composed of the following raw materials: 72.5 grade white ultra-high strength double-fast cement 774.5kg, white silica fume 57.0kg, black iron oxide 3.42kg, hollow glass microspheres (particle size 0.15-0.3mm, bulk density (460±40Kg / m 3 )) is 239.4kg, hollow glass microspheres (particle size 1.0-2.0mm, bulk density (280±30Kg / m 3 )) is 50.1kg, PC8300 water reducer is 4.56kg, P803 defoamer is 1.71kg, lithium carbonate is 0.11kg, carboxymethyl cellulose is 0.11kg, 5044 rubber powder is 6.5kg, sodium citrate is 1.14kg, sodium gluconate is 0.57kg and water is 228kg, and the water-to-material ratio is 0.2.

[0092] Specifically, the composition of high thermal resistance lightweight aggregate concrete can be found in CN115073106B, wherein any example that meets the requirement of thermal conductivity less than 0.5W / mk and 28d standard curing compressive strength greater than 30Mpa can be used in the present invention and will not be described in detail.

[0093] Preferably, the steel frame 12 comprises:

[0094] Two relatively parallel steel meshes, the steel meshes comprising a plurality of interwoven horizontal transverse bars 121 and vertical longitudinal bars 122;

[0095] A plurality of tie bars 123 are located between the two steel meshes, i.e., the two ends of the tie bars are connected to the two steel meshes respectively. Preferably, one end of the tie bar is wound around the horizontal transverse bar of one steel mesh, and the other end of the tie bar is wound around the horizontal transverse bar of the other steel mesh, and the tie bar 123 is straightened between the two steel meshes, i.e., the tie bar 123 is perpendicular to the two steel meshes.

[0096] The method for preparing the exterior wall 1 comprises the following steps:

[0097] S101: Arrange the steel frame 12 according to the design;

[0098] S102: A model that is set to match the exposed concrete wall according to the design;

[0099] S103: Casting with high thermal resistance lightweight aggregate concrete, and dismantling the model after curing to obtain the exterior wall 1.

[0100] The exposed concrete wall 11 is provided with a protective coating 111, that is, the exposed concrete wall 11 is coated with a protective agent on the outside, and the protective agent is made of materials with good environmental protection, weather resistance, anti-fouling and water repellency, so as to further improve the use effect of the exterior wall. Exemplarily, the protective agent is a fluorocarbon resin exposed concrete protective agent or a silicone resin exposed concrete protective agent, and the fluorocarbon resin exposed concrete protective agent: the polymer containing a fluorocarbon bond (FC) in the main chain or side chain of the molecule is a fluorocarbon resin, and the fluorocarbon resin coating has the highest known bond energy of 485kJ / mol in the carbon-fluorine bond in its molecule, and the FC bond is very stable. Fluorocarbon resin can transmit more than 95% of the medium and long waves in the ultraviolet region (220nm-400nm) of sunlight, and only ultraviolet light with a wavelength of no more than 220nm can destroy the FC bond, but the proportion of these short-wave ultraviolet rays in sunlight is very small, and it is easily absorbed by the atmospheric ozone layer. Therefore, the exposed water protective agent coating containing fluorocarbon resin has super weather resistance. The higher the fluorine content, the better the weather resistance of the material. Currently, all products on the market, whether domestic or imported, except for fluorocarbon protective agents, are silicone resin clear water concrete protective agents, with a warranty period of 10 years.

[0101] Embodiment 2

[0102] This embodiment discloses a node structure with a cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall, which can at least be used for connecting a building exterior wall (the building exterior wall adopts the exterior wall provided in the first embodiment, i.e., a cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall) with an indoor structural floor slab, such as Figure 2 As shown, including:

[0103] The cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall 1 disclosed in the first embodiment;

[0104] The indoor structural floor 2 is partially inserted into the exterior wall 1, that is, the connection between the exterior wall and the indoor structural floor adopts a structural simply supported connection method.

[0105] The node structure in this embodiment is applicable to the connection between the floor slabs from the first floor to the second top floor (ie, the indoor structural floor slabs) and the exterior wall 1 of a high-rise building (ie, a building with more than three floors).

[0106] To avoid the generation of cold and hot bridges, a first insulation layer 21 is applied on the outside of the indoor structural floor 2, which can also prevent condensation, mildew and dripping on the inside of the exterior wall due to the large temperature difference between indoor and outdoor. The first insulation layer is an extruded polystyrene board with a thickness of not less than 30 mm.

[0107] The effective length of the indoor structural floor 2 extending into the exterior wall 1 is not less than 100 mm, so as to ensure the connection strength between the indoor structural floor and the exterior wall and improve the stability of the node structure.

[0108] In order to further improve the connection strength between the indoor structural floor 2 and the exterior wall 1, the vertical longitudinal reinforcement 122 on the inner side (the side close to the interior) of the steel frame 12 vertically passes through the indoor structural floor 2, and the steel bars in the indoor structural floor (i.e., the indoor structural floor steel bars 26) are tied to the vertical longitudinal reinforcement 122 vertically passing through the indoor structural floor.

[0109] During the binding process of the steel frame 12 and the steel frame and the indoor structural floor steel bars, the lap length of the longitudinal tensile steel bar binding lap joints should not be less than 350mm, and the lap length of the longitudinal compressive steel bar lap joints should not be less than 250mm, so as to ensure the safety and reliability of the structure in use.

[0110] A first buffer layer 22 is provided at the overlap of the indoor structural floor 2 and the exterior wall. Specifically, a first buffer layer 22 is provided inwardly at the intersection of the indoor structural floor 2 and the exterior wall to prevent fatigue damage of the contact surface due to long-term mutual extrusion of materials. Preferably, the inward extension length of the first buffer layer 22 is less than or equal to the effective length of the indoor structural 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.

[0111] For heat preservation, a second heat-insulating layer 23 is provided on the indoor structural floor within 500±50mm of the exterior wall toward the indoor direction, that is, a second heat-insulating layer 23 within 500±50mm is provided on the side of the indoor structural floor 2 close to the exterior wall. The thickness of the second heat-insulating layer is 30 to 50mm. Preferably, a first moisture-proof layer 24 is also provided between the second heat-insulating layer 23 and the indoor structural floor.

[0112] The construction method of the node structure in this embodiment includes the following steps:

[0113] S201: construct the exterior wall to the first construction joint 25 (flush with the upper surface of the interior structural floor), and reserve the vertical longitudinal reinforcement required by the design;

[0114] S202: tying the indoor structural floor steel bars 26, while the corresponding vertical longitudinal bars longitudinally penetrate the indoor structural floor steel bar structure, and the indoor structural floor steel bars are tied to the longitudinally penetrated vertical longitudinal bars;

[0115] S203: setting a template matching the indoor structural floor according to the design, and setting a first insulation layer and a first buffer layer at the same time, pouring ordinary concrete, and dismantling the template after curing to obtain the indoor structural floor;

[0116] S204: Tie up the steel bars of the upper exterior wall according to the design, and set up a template matching the steel bars;

[0117] S205: Use high thermal resistance lightweight aggregate concrete for pouring, remove the model after curing, lay a first moisture-proof layer and a second insulation layer on the indoor structural floor, and obtain the node structure with an external wall in this embodiment.

[0118] Embodiment 3

[0119] This embodiment discloses another node structure with a cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall, which can be used at least for connecting the top floor exterior wall of a building (the top floor exterior wall of the building adopts the exterior wall provided in the first embodiment, i.e., the cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall) with the top floor structural floor slab, such as Figure 3 As shown, including:

[0120] The cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall 1 disclosed in the first embodiment is provided with an overlap portion 101;

[0121] The top structural floor 3 is at least partially located on the overlapping portion 101 . Specifically, one end of the top structural floor 3 is disposed on the overlapping portion 101 .

[0122] The longitudinal section of the exterior wall in this embodiment is similar to an "h" shape. Specifically, the exterior wall includes a first section 1a and a second section 1b connected up and down. The cross-section of the first section 1a is larger than the cross-section of the second section 1b, and the outer side surfaces of the first section 1a and the second section 1b are flush, and the inner side surface of the second section 1b is perpendicular to the top of the first section 1a.

[0123] The longitudinal steel bars inside the steel frame of the second section 1b extend downward into the steel 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 frame of the first section to improve the structural stability of the exterior wall. Preferably, the longitudinal steel bars inside the second section extend into the first section by no less than 150 mm.

[0124] The overlapping portion 101 is defined by the first section and the second section. The overlapping portion 101 is located at the top of the first section and at the inner side of the second section.

[0125] The width of the overlapped portion 101 is not less than 100 mm, that is, the length of the top structural floor 3 at the overlapped portion 101 is not less than 100 mm, so as to ensure the connection strength between the top structural floor and the external wall and improve the stability of the node structure.

[0126] In order to further improve the connection strength between the top structural floor 3 and the exterior wall 1, the vertical longitudinal reinforcement on the inner side of the steel frame of the first section 1a penetrates upward through the top steel structure 31 of the top structural floor 3 and then bends outward to extend into the steel frame of the second section and connects with the steel frame of the second section, and the vertical steel bars penetrated longitudinally are respectively tied to the top steel structure 31 and the two steel meshes of the second section.

[0127] During the binding process of the exterior wall steel frame and the steel frame and the top steel structure, the lap length of the longitudinal tension steel bar binding lap joints should not be less than 350mm, and the lap length of the longitudinal compression steel bar lap joints should not be less than 250mm, to ensure the safety and reliability of the structure in use.

[0128] A second buffer layer 32 is provided at the overlap between the top structural floor 3 and the outer wall. Specifically, a second buffer layer 32 is provided inwardly at the intersection between the top structural floor 3 and the outer wall to prevent fatigue damage of the contact surface due to long-term mutual extrusion of materials. Preferably, the inward extension length of the second buffer layer 32 is less than or equal to the effective overlap length of the top structural floor 3 and the outer wall 1, that is, the inward extension length of the second buffer layer 32 is less than or equal to 100 mm. Exemplarily, the second buffer layer 32 is a rubber pad.

[0129] In order to avoid the generation of cold and hot bridges, a third insulation layer 33 is laid on the outer side of the top structural floor 3, which can also prevent condensation, mildew and dripping on the inner side of the outer wall due to the 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.

[0130] For heat preservation, a fourth insulation layer 34 is laid on the top structural floor, and a first waterproof layer 35 is laid on the fourth insulation layer 34. Preferably, the thickness of the fourth insulation layer is 50-150m, and the fourth insulation layer is an extruded polystyrene board. The material of the first waterproof layer is 4+3SBS thermoplastic polyester waterproof membrane. Preferably, the first waterproof layer is laid in two layers, one layer is 4mm and the other layer is 3mm. In practical applications, the material thickness, structural form, and roof heat transfer coefficient of the fourth insulation layer and the waterproof layer should meet the requirements of energy conservation and heat preservation of the building location.

[0131] The construction method of the node structure in this embodiment includes the following steps:

[0132] S301: construct the top exterior wall to the position of the second construction joint 36 (flush with the upper surface of the top structural floor), and reserve the vertical longitudinal reinforcement required by the design;

[0133] S302: tying the top steel bar structure, and at the same time, the corresponding vertical longitudinal bars longitudinally penetrate the top steel bar structure, and the top steel bar structure is tied to the vertical longitudinal bars longitudinally penetrated;

[0134] S303: According to the design, a template matching the indoor structural floor is set, and a third insulation layer and a second buffer layer are set at the same time, ordinary concrete is poured, and after curing, the template is removed to obtain the top structural floor;

[0135] S304: Continue to tie up the steel bars of the top exterior wall according to the design, and set up a template that matches the steel bars;

[0136] S305: Use high thermal resistance lightweight aggregate concrete for pouring, remove the model after curing, lay the fourth insulation layer and the first waterproof layer on the top structural floor, and obtain the node structure with an external wall in this embodiment.

[0137] Embodiment 4

[0138] This embodiment discloses a third node structure with a cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall, which can at least be used for connecting a building exterior wall (the building exterior wall adopts the exterior wall provided in the first embodiment, i.e., a cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall) with a cantilevered balcony structure, such as Figure 4 As shown, including:

[0139] The cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall 1 disclosed in the first embodiment;

[0140] The cantilevered balcony structure 4 includes a structural floor 41 and a balcony slab 42, wherein the structural floor 41, the balcony slab 42 and the exterior wall 1 are intersected and connected together. Specifically, the outer side of the structural floor 41, the top of the exterior wall 1 and the inner side of the balcony slab 42 are intersected and connected.

[0141] In order to effectively avoid the cold bridge heat conduction effect of the balcony slab, the balcony slab 42 and the exterior wall 1 are cast in situ as an integrated structure, that is, both are cast with high thermal resistance lightweight aggregate concrete.

[0142] In order to ensure the stability and safety of the structure, the steel reinforcement structures of the structural floor slab 41, the balcony slab 42 and the exterior wall 1 are tied together.

[0143] Specifically, the steel bar structure of the balcony slab 42 includes an upper steel bar mesh 421 and a lower steel bar mesh 422, and a plurality of intermediate tie bars 423 located between the upper steel bar mesh 421 and the lower steel bar mesh 422. Preferably, the upper steel bar mesh 421 is located above the lower steel bar mesh 422 and is arranged horizontally, and the lower steel bar mesh 422 is arranged gradually downward from the outside to the inside, so as to form a wedge-shaped steel bar structure, so that the balcony slab has stronger supporting force and is more stable.

[0144] The lower steel mesh 422 is inserted into the steel frame of the exterior wall and is tied to the horizontal transverse bars and vertical longitudinal bars of the steel frame. Preferably, the lower steel mesh 422 extends through the outer steel mesh of the steel frame, and then continues to extend to the outer side of the inner steel mesh of the steel frame and then bends and extends downward. During the extension process, the lower steel mesh 422 is first tied to the horizontal transverse bars and vertical longitudinal bars of the outer steel mesh, and then tied to the horizontal transverse bars and vertical longitudinal bars of the inner steel mesh.

[0145] The top inner corner of the steel bar frame of the exterior wall intersects with the outer end of the steel bar structure of the structural floor slab for binding.

[0146] In order to further strengthen the connection strength between the structural floor 41 , the balcony slab 42 and the exterior wall 1 , the inner steel mesh of the exterior wall extends upward and vertically through the steel structure of the structural floor, and then bends and extends horizontally outward to form an upper steel mesh 421 of the balcony slab 42 .

[0147] The balcony board 42 is provided with a second waterproof layer 424, the material of which is 4+3SBS thermoplastic polyester waterproof membrane. The second waterproof layer 424 is also provided with a drainage structure 425 to drain the accumulated water on the balcony.

[0148] A third buffer layer 43 is provided at the connection between the structural floor 4 and the outer wall. Specifically, a third buffer layer 43 is provided inwardly at the intersection between the structural floor 4 and the outer wall to prevent fatigue damage of the contact surface due to long-term mutual extrusion of materials. Exemplarily, the third buffer layer 43 is a rubber pad.

[0149] Floor-to-ceiling windows may be provided above the outer side of the balcony slab 42, or a balcony side wall 426 cast integrally therewith may be provided. Preferably, the structure of the balcony side wall 426 is the same as that of the outer wall, and the steel bars of the balcony side wall are staggered and tied with the steel bars of the balcony slab 42, and the balcony side wall 426 is also cast with high thermal resistance lightweight aggregate concrete.

[0150] Embodiment 5

[0151] This embodiment discloses a fourth node structure with a cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall, which can at least be used for connecting the exterior wall of the bottom floor of a building (the exterior wall of the bottom floor of the building adopts the exterior wall provided in the first embodiment, i.e., the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall) with the bottom structure, such as Figure 5 As shown, including:

[0152] A substructure 5, including a structural foundation 51 and a ground surface 52;

[0153] The cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall 1 disclosed in the first embodiment is arranged on the structural foundation 51 .

[0154] Specifically, the structural foundation 51 is located below the ground 52 , and the exterior wall 1 is partially inserted into the ground and is located directly above the structural foundation 51 .

[0155] 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 the cross section of the support column 512, and the cross section of the support column 512 is larger than the cross section of the outer wall 1. The shape of the support column 512 matches the outer wall. Such a configuration is provided to provide stable support for the outer wall.

[0156] The part of the outer wall below the ground and the side wall of the support column 512 are paved with waterproofing membrane 53, which plays an effective waterproof and hydrophobic role, and prevents groundwater from rising above the ground along the inner part of the outer wall due to capillary action, which has an adverse effect on the indoor thermal environment comfort. The waterproofing membrane 53 is one of 3mm thick SBS polyester waterproofing membrane, 1.5mm polyethylene polypropylene waterproofing material or 1.5mm ethylene propylene rubber waterproofing membrane (EPDM).

[0157] In order to improve the supporting strength of the support column to the external wall, the support column 512 is provided with a limiting portion 513 embedded in the external wall. The limiting portion 513 is located on both sides of the external wall, and the longitudinal section of the limiting portion 513 is a right triangle. One right-angled side of the right triangle is close to the external wall, and the other is close to the top of the support column 512 to more stably support the external wall.

[0158] For heat preservation, a fifth insulation layer 521 is provided on the ground within a range of 1000±100mm of the outer wall toward the indoor direction, that is, a fifth insulation layer 521 within a range of 1000±100mm is provided on the side of the indoor ground close to the outer wall. Preferably, a second moisture-proof layer 522 is further provided between the fifth insulation layer 515 and the ground. Exemplarily, the fifth insulation layer is a 50mm thick extruded polystyrene board insulation layer, and the second moisture-proof layer is a 1.5mm thick polyurethane waterproof coating.

[0159] In order to avoid cold and hot bridges, the side walls of the exterior wall below the ground facing the outside and the outer side walls of the support columns (the side walls facing the outside) are provided with a sixth insulation layer 54. Preferably, the sixth insulation layer is an extruded polystyrene board with a thickness of 30±5mm. A seventh insulation layer 55 is provided on the ground within a range of 1000±100mm of the exterior wall facing the outside. By setting the seventh insulation layer horizontally and the sixth insulation layer vertically outdoors, the insulation and heat insulation performance of the weak positions of the exterior wall can be improved to avoid cold and hot bridges.

[0160] It should be noted that Figure 5 For the sake of clarity, the reinforcement of the exterior walls and the underlying structure itself is not drawn.

[0161] The construction method of the node structure in this embodiment includes the following steps:

[0162] S501: Build and cast the structural foundation, which is cast with ordinary concrete;

[0163] S502: Tie up the steel bars of the exterior wall, set up the formwork that matches the steel bars according to the design, use high thermal resistance lightweight aggregate concrete for pouring, and remove the formwork after curing;

[0164] S503: Waterproof membrane and the sixth insulation layer are sequentially arranged outside the exterior wall and the structural foundation, and soil is filled to form the indoor and outdoor floors. Then, the second moisture-proof layer, the fifth insulation layer, and the seventh insulation layer are laid respectively to obtain the node structure with an exterior wall in this embodiment.

[0165] The cast-in-place structure heat-insulating integrated plain concrete exterior wall of the present invention is an integrated structure, does not adopt a composite structural system such as a "sandwich" sandwich insulation, and has excellent high thermal resistance and self-insulation performance. The exterior wall of the present invention adopts high thermal resistance lightweight aggregate concrete, which has higher thermal resistance, lower thermal conductivity, and better energy-saving effect than ordinary concrete, so the exterior wall extruded polystyrene board insulation layer can be eliminated.

[0166] The present invention can solve the problems of complex structural and construction technical measures, high labor costs, widespread cold and hot bridges affecting the thermal insulation performance of the exterior wall, and heavy wall weight in the design and construction of "sandwich" cast-in-place structure integrated insulation fair-faced concrete exterior wall.

[0167] The present invention proposes corresponding improvement measures for the shortcomings in the design and construction of bare concrete buildings. The high thermal resistance cast-in-place structure thermal insulation integrated bare concrete exterior wall uses lightweight aggregate concrete raw materials, combines the shape and function, structural system, thermal insulation enclosure system, thermal structure, waterproof structure and other system characteristics of the bare concrete exterior wall, and uses a simple and homogeneous exterior wall structure layer to replace the current "sandwich" composite structure, making the building structure system lighter and safer, while reducing the difficulty of construction technology, and achieving the lightweight of concrete materials and the reduction of construction and building measures.

[0168] The present invention adopts high heat resistance structure load-bearing cast-in-place plain concrete only in the building exterior wall with thermal insulation requirements, while the indoor structural floor, roof panel, interior wall, indoor beam column, etc. are still constructed with ordinary concrete. The structural system is simple and reasonable, the design and construction principle is the same as that of ordinary concrete buildings, and the cost is low and the economy is good. The matching wall body node structure is closely matched with the overall exterior wall system, the technology is simple, the construction is convenient, and the problems existing in the existing technology can be effectively solved and the comprehensive efficiency of the building can be improved.

[0169] Since the exterior walls of fair-faced concrete buildings are generally complex in structure, have poor energy-saving effects, and have high construction technology and cost, the application scenarios are currently mainly high-end buildings or places such as museums and exhibition halls, and the scope of application is greatly limited. On the other hand, as the construction industry enters a period of stable development, urban renewal and rural transformation and upgrading will become the future development direction of the construction industry, and the number of small-scale new micro-renewal projects will increase. The present invention is a green and low-carbon building construction technology, which maximizes the energy-saving and consumption-reduction potential of fair-faced concrete enclosure structures, reduces the carbon emission level of concrete buildings, and reduces construction costs and construction difficulties. Therefore, it can expand the scope of application of fair-faced concrete, enhance industrial added value, and broaden the application scenarios of materials and technologies, which is in line with industry development trends and emerging business needs.

[0170] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A node structure with a cast-in-place structural insulation integrated fair-faced concrete exterior wall, characterized in that: It can at least be used to connect the building exterior wall and the indoor structural floor, and the node structure includes: Cast-in-place structural insulation integrated fair-faced concrete exterior wall; The indoor structural floor slab is partially inserted into the cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall; Wherein, the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall comprises: For the bare concrete wall, the thermal conductivity is less than 0.5W / mk, and the compressive strength after 28 days of standard curing is greater than 30Mpa; A steel bar frame is located inside the fair faced concrete wall to provide a supporting framework for the fair faced concrete wall.

2. The node structure according to claim 1, characterized in that: A first thermal insulation layer is applied on the outer side of the indoor structural floor; The effective length of the indoor structural floor extending into the cast-in-place structural insulation integrated fair-faced concrete exterior wall is not less than 100 mm.

3. The node structure according to claim 2, characterized in that: The vertical longitudinal reinforcement inside the steel bar frame vertically passes through the indoor structural floor slab, and the steel bars in the indoor structural floor slab are tied to the vertical longitudinal reinforcement vertically passing through the indoor structural floor slab; During the binding process of the steel bar frame and the steel bar frame and the indoor structural floor steel bar, the lap length of the longitudinal tension steel bar binding lap joint should not be less than 350mm, and the lap length of the longitudinal compression steel bar lap joint should not be less than 250mm; Preferably, a first buffer layer is provided at the overlap between the indoor structural floor and the cast-in-place structural insulation integrated fair-faced concrete exterior wall.

4. A node structure with a cast-in-place structural insulation integrated fair-faced concrete exterior wall, characterized in that: It can at least be used to connect the top floor exterior wall and the top floor structural floor of a building, and the node structure includes: Cast-in-place structural insulation integrated fair-faced concrete exterior wall with overlap; a top structural floor slab, at least partially located on the overlapped portion; Wherein, the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall comprises: For the bare concrete wall, the thermal conductivity is less than 0.5W / mk, and the compressive strength after 28 days of standard curing is greater than 30Mpa; A steel bar frame is located inside the fair faced concrete wall to provide a supporting framework for the fair faced concrete wall.

5. The node structure according to claim 4, characterized in that: The cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall comprises a first section and a second section connected up and down, the cross section of the first section is larger than the cross section of the second section, the outer side surfaces of the first section and the second section are flush, and the inner side surface of the second section is perpendicular to the top of the first section; The longitudinal steel bars inside the steel frame of the second section extend downward into the steel frame of the first section, and the longitudinal steel bars inside the second section are tied together with the tension bars of the steel frame of the first section; The overlapping portion is defined by the first section and the second section, and is located at the top of the first section and inside the second section; Preferably, the width of the overlapping portion is not less than 100 mm.

6. The node structure according to claim 5, characterized in that: The vertical longitudinal bars on the inner side of the first section of the steel frame are passed through the top steel structure of the top structural floor upwards, then bent outwards and extended into the second section of the steel frame to be connected with the second section of the steel frame, and the vertical longitudinal bars are respectively tied to the top steel structure and the two steel meshes of the second section; Preferably, a second buffer layer is provided at the joint between the top structural floor slab and the cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall; Preferably, a third insulation layer is applied on the outer side of the top structural floor; Preferably, a fourth thermal insulation layer is laid on the top structural floor slab, and a first waterproof layer is laid on the fourth thermal insulation layer.

7. A node structure with a cast-in-place structural insulation integrated fair-faced concrete exterior wall, characterized in that: It can at least be used for connecting the building exterior wall and the cantilevered balcony structure, and the node structure includes: Cast-in-place structural insulation integrated fair-faced concrete exterior wall; The cantilevered balcony structure includes a structural floor slab and a balcony slab, wherein the structural floor slab, the balcony slab, and a cast-in-place structural insulation integrated fair-faced concrete exterior wall are intersected and connected together; Wherein, the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall comprises: For the bare concrete wall, the thermal conductivity is less than 0.5W / mk, and the compressive strength after 28 days of standard curing is greater than 30Mpa; A steel bar frame is located inside the fair faced concrete wall to provide a supporting framework for the fair faced concrete wall.

8. The node structure according to claim 7, characterized in that: The steel bar structure of the balcony slab includes an upper steel bar mesh and a lower steel bar mesh, and a plurality of intermediate tie bars located between the upper steel bar mesh and the lower steel bar mesh; The upper steel mesh is located above the lower steel mesh and is arranged horizontally, and the lower steel mesh is arranged gradually downward from the outside to the inside; The lower steel mesh is inserted into the steel frame of the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall, and is respectively tied to the horizontal transverse reinforcement and vertical longitudinal reinforcement of the steel frame; The top inner corner of the steel frame of the cast-in-place structural thermal insulation integrated plain concrete exterior wall intersects with the outer end of the steel structure of the structural floor slab for binding; The inner steel mesh of the cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall extends upward and vertically penetrates the steel structure of the structural floor slab, and then bends and extends horizontally outward to form the upper steel mesh of the balcony slab; Preferably, a second waterproof layer is laid on the balcony slab; The second waterproof layer is also provided with a drainage structure.

9. A node structure with a cast-in-place structural insulation integrated fair-faced concrete exterior wall, characterized in that: It can at least be used to connect the outer wall of the bottom floor of the building with the bottom floor structure, and the node structure includes: Substructure, including structural foundations and ground; Cast-in-place structural insulation integrated fair-faced concrete exterior wall, set on the structural foundation; Wherein, the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall comprises: For the bare concrete wall, the thermal conductivity is less than 0.5W / mk, and the compressive strength after 28 days of standard curing is greater than 30Mpa; A steel bar frame is located inside the fair faced concrete wall to provide a supporting framework for the fair faced concrete wall.

10. The node structure according to claim 9, characterized in that: The structural foundation is located below the ground, and a portion of the cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall is inserted into the ground and is located directly above the structural foundation; The structural foundation includes a base and a support column, wherein 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 cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall; Preferably, the part of the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall located below the ground and the side walls of the support columns are paved with waterproof coiled materials; Preferably, the support column is provided with a limiting portion embedded in the cast-in-place structure thermal insulation integrated fair-faced concrete outer wall, and the limiting portion is located on both sides of the cast-in-place structure thermal insulation integrated fair-faced concrete outer wall; Preferably, a fifth insulation layer is provided on the ground within a range of 1000±100mm in the indoor direction of the cast-in-place structure thermal insulation integrated fair-faced concrete exterior wall, and a moisture-proof layer is also provided between the fifth insulation layer and the ground; The side walls of the cast-in-place structural thermal insulation integrated fair-faced concrete exterior wall below the ground facing the outdoors and the outer side walls of the support columns are provided with a sixth thermal insulation layer.

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