Built-in insulation method and system for cast-in-place concrete walls of zero-carbon buildings

Abstract

The present invention relates to a method and system for built-in insulation of cast-in-place concrete walls of zero-carbon buildings, in order to meet the needs of built-in insulation of zero-carbon building walls. The wall body adopts an inner cast-in-place concrete layer, a middle insulation board layer and an outer concrete protective layer structure, and a through-wall bolt airtight pipe is arranged between the inner steel bar layers, and the cast-in-place concrete layer and the self-compacting concrete protective layer are cast. The position of the cast-in-place concrete layer is preset with a cast-in-place concrete inner steel bar layer close to the insulation board layer, and a steel wire mesh interlayer is preset at the position of the self-compacting concrete protective layer. The cast-in-place concrete inner steel bar layer and the steel wire mesh interlayer are connected to a heat-free bridge connector for fixing the insulation board layer, and the through-wall bolt airtight pipe and the through-wall bolt and sealing plugs at both ends are arranged between the steel wire mesh interlayer of the cast-in-place concrete layer and the insulation board layer and the cast-in-place concrete inner steel bar layer of the self-compacting concrete protective layer. It has the advantages of simple structure, convenient construction, ensuring the structural strength between each layer of the wall and the whole wall, and good thermal insulation performance.

Description

Technical Field

[0001] The invention relates to a built-in thermal insulation method for a concrete wall, and in particular to a built-in thermal insulation method and system for a zero-carbon building cast-in-place concrete wall. Background Art

[0002] The prior art has a cast-in-place concrete built-in insulation structure comprising a concrete layer, an insulation board and a concrete protective layer, wherein the concrete layer, the insulation board and the concrete protective layer are arranged in sequence from right to left, a right steel wire sheet is arranged in the concrete layer, fixings and connecting steel wires are respectively arranged on the insulation board, longitudinal steel wires are arranged on both sides of the insulation board in the concrete layer and the concrete protective layer, the fixings are connected to the longitudinal steel wires, the connecting steel wires are arranged horizontally, and a left steel wire sheet is arranged in the concrete protective layer.

[0003] The right steel wire sheet and the left steel wire sheet are composed of 1-3 groups of steel wire mesh sheets. The fixing member includes a screw rod, which passes through the insulation board, and both ends of the screw rod are sleeved with a fixing ring, and the outer side of the fixing ring is threadedly connected with a nut on the screw rod. The fixing ring is evenly provided with through holes, and one of the through holes is tied and connected with the longitudinal steel wire by a wire tie. The connecting steel wire is provided with a support plate, and the support plate is connected to the connecting steel wire as a whole. The two sides of the support plate are evenly fixedly sleeved with limit rings at the outer periphery of the connecting steel wire. One end of the connecting steel wire is located in the concrete layer, and the other end of the connecting steel wire is located in the concrete protective layer. The positions of the connecting steel wire corresponding to the right steel wire sheet and the left steel wire sheet are tied and connected with the corresponding positions of the right steel wire sheet and the left steel wire sheet by a wire tie. The beneficial effect is that when pouring concrete, the insulation board is not easy to deform or crack. However, the insulation board used in the wall of the existing zero-carbon building (ultra-low energy consumption building, passive building, near-zero energy consumption building) generally has high mechanical strength and performance, and there is no defect that the insulation board is easy to deform or crack. The walls of zero-carbon buildings (ultra-low energy buildings, passive buildings, near-zero energy buildings) that use this existing technology have the defects of complex structure and inconvenient construction.

[0004] The inventor has invented a cast-in-place concrete wall insulation layer fixing nail, and the Chinese patent number is 200620120340.9. The nail cap at the rear end of the plastic nail body is provided with a plurality of circumferential radial reinforcement strips, and the nail body is provided with a plurality of circumferentially evenly distributed axial reinforcement ribs, and the rear end of the reinforcement ribs is connected to the radial reinforcement strips; a steel bar or a metal pipe is buried in the center of the nail body, and a blind hole is provided at the center of the rear end of the nail cap, and the outer end of the steel bar or the metal pipe is exposed in the blind hole. There are four reinforcement ribs, and the front ends of two opposite reinforcement ribs are provided with one or more groups of grooves corresponding to each other. The outer end of the radial reinforcement strip connected to the reinforcement rib without grooves is provided with a nail head-shaped protrusion extending forward. The middle and rear outer edges of the reinforcement ribs are provided with dense small notches. The outer edge of the reinforcement rib without grooves is provided with dense convex thorns. All convex thorns are inclined toward the rear end. The reinforcement ribs are provided with material reduction through holes. Straight reinforcement ribs are provided between the middle sections or ends of adjacent radial reinforcement strips. The rear end of the steel bar or metal pipe is equipped with a thread cap or a rivet cap. During construction, the fixing nail can be inserted into the insulation layer first, so that the front end of the fixing nail is exposed outside the insulation layer, and the front end of the fixing nail is poured into the concrete wall. Then, a steel mesh is fixed to the rear end of the fixing nail to make the wall surface outside the insulation layer. Therefore, after the outer mortar layer of the insulation layer is installed, the radial reinforcement strips will be completely buried in the mortar layer, which is conducive to strengthening the fixation with the outer mortar layer of the insulation layer. The reinforcement ribs are conducive to strengthening the mechanical strength of the fixing nails, and are also conducive to the fixed connection with the insulation layer and the concrete wall layer, and can prevent dislocation. However, the existing cast-in-place concrete wall insulation layer fixing nails can no longer meet the needs of zero-carbon buildings (ultra-low energy consumption buildings, passive buildings, and near-zero energy consumption buildings).

[0005] The inventor has invented and applied for a passive building through-wall bolt sleeve with an airtight plug, the Chinese patent number is ZL201921294125.4, which is a circular sleeve made of plastic with blue discs at both ends and in the middle, and sealing plugs of various colors made of foamed plastic are respectively plugged at both ends of the sleeve; the sealing plug is a circular plug cover with a circular plug tube on one side, and the outer circumference of the circular plug tube is provided with multiple circumferential annular plug tube convex ridges for sealing with the inner circumference of the circular sleeve. The blue discs are multiple and spaced apart, and the blue discs on both sides of the blue disc are spaced apart from the blue discs at both ends of the sleeve. The blue discs are four and spaced apart, and the blue discs on both sides of the four blue discs are spaced apart from the blue discs at both ends of the sleeve. The adjacent distances of the four blue discs are equal, and the distances between the blue discs on both sides of the four blue discs and the blue discs at both ends of the sleeve are 1 / 2 of the adjacent distances of the four blue discs. The sleeve is provided with circumferential annular ridges distributed at intervals between the blue disks and between the blue disks on both sides of the blue disk and the blue disks at both ends of the sleeve. The intermediate ridges provided between the adjacent blue disks of the sleeve are larger than the ridges provided between the blue disks on both sides of the blue disk and the blue disks at both ends of the sleeve, and the spacing between the adjacent intermediate ridges is larger than the spacing between the adjacent ridges at both ends. The sleeve is provided with inner convex platforms on the inner sides of the blue disks at both ends, and the inner sides of the blue disks at both ends are provided with circumferentially uniformly distributed radial connecting ends, adjacent ridges on the inner sides of the blue disks, inner convex platforms, and slope walls of the outer peripheral wall of the sleeve between the adjacent ridges and the inner convex annular platforms. The inner side of the circular plug cover is provided with inner convex annular platforms distributed at intervals with adjacent ridges for matching with the inner peripheral sealing sleeve of the circular sleeve. It has the advantages of not being blocked or covered by mortar and foam glue, being easy to supervise, and being easy to construct. However, the existing passive building through-wall bolt sleeves equipped with airtight plugs can no longer meet the needs of zero-carbon buildings (ultra-low energy consumption buildings, passive buildings, and nearly zero energy consumption buildings). For example, compared with previous passive buildings, zero-carbon buildings have significant changes in the volume, weight and material of the insulation layer and the external additional layer, making the old wall-penetrating bolt sleeves no longer applicable. Summary of the invention

[0006] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and provide a method for built-in insulation of cast-in-place concrete walls of zero-carbon buildings with simple structure, convenient construction and high bonding strength. The present invention also relates to a system for implementing the method.

[0007] To achieve the above-mentioned purpose, the built-in insulation method of the cast-in-place concrete wall of the zero-carbon building of the present invention is that the wall adopts a hierarchical structure of cast-in-place concrete layer, insulation board layer and concrete protective layer from the inside to the outside, and the special feature is that a through-wall bolt airtight tube is penetrated between the concrete inner steel bar layers, and the cast-in-place concrete layer and the self-compacting concrete protective layer are cast. The position of the cast-in-place concrete layer is preset with a cast-in-place concrete inner steel bar layer close to the insulation board layer, and the position of the self-compacting concrete protective layer is preset with a wire mesh interlayer. A thermal bridge-free connector for fixing the insulation board layer is connected between the cast-in-place concrete inner steel bar layer and the wire mesh interlayer, and a through-wall bolt airtight tube and through-wall bolts and sealing plugs at both ends are penetrated between the wire mesh interlayer of the cast-in-place concrete layer and the cast-in-place concrete inner steel bar layer of the insulation board layer and the self-compacting concrete protective layer. The cast-in-place concrete layer and the self-compacting concrete protective layer are cast, so as to realize the thermal insulation support of the cast-in-place concrete layer, the insulation board layer and the self-compacting concrete protective layer by the through-wall bolt airtight tube and the through-wall bolts and sealing plugs at both ends. Providing a cast-in-place concrete inner steel bar layer close to the insulation board layer in the cast-in-place concrete layer is beneficial to improving the structural strength of the wall and the building and facilitating construction. After the concrete protective layer is changed to a self-compacting concrete protective layer with a wire mesh interlayer, construction is convenient to ensure construction quality and structural strength. Providing a heat-bridge-free connector to connect the cast-in-place concrete inner steel bar layer and the wire mesh interlayer can facilitate construction, ensure the setting strength and stability of the insulation board layer and the self-compacting concrete protective layer, and ensure that the connector does not cause a heat bridge that damages the thermal insulation properties of the insulation board layer. Providing a through-wall bolt airtight pipe through the concrete layer, the insulation board layer and the self-compacting concrete protective layer can ensure the bonding strength of the three wall layers and the supporting strength of the through-wall bolts to the insulation board layer and the self-compacting concrete protective layer, and can ensure that the insulation board layer will not lose the thermal insulation properties due to the through-wall bolts. In short, it has the advantages of simple structure, convenient construction, and can ensure the structural strength between the wall layers and the entire wall. It has good thermal insulation performance and can meet the insulation construction needs of cast-in-place concrete walls in zero-carbon buildings.

[0008] As an optimization, a decorative surface layer is provided on the outside of the self-compacting concrete protective layer after pouring, and the thickness decreases in sequence from the thermal insulation board layer, the cast-in-place concrete layer with a cast-in-place concrete inner steel bar layer, the self-compacting concrete protective layer with a wire mesh interlayer to the decorative surface layer. The cast-in-place concrete inner steel bar layer is provided in the middle of the outer half of the cast-in-place concrete layer, and the wire mesh interlayer is provided in the middle of the self-compacting concrete protective layer. The thickness of the thermal insulation board layer is 1.25 times the thickness of the cast-in-place concrete layer, and the thickness of the cast-in-place concrete layer is 4 times the thickness of the self-compacting concrete protective layer. It has the advantages of simple structure, convenient construction, and can ensure the structural strength between the layers of the wall and the entire wall, and good thermal insulation performance.

[0009] As an optimization, the non-thermal bridge connector is a plastic nail body with an axial center blind hole and axial reinforcement ribs evenly distributed on the outer circumference, which is fastened to a rear cap with an axial center through hole through a threaded steel bar with a sleeve threaded inside, and a steel mesh interlayer is clamped between the rear end force platform of the nail body and the rear cap; a limiter is used in front or behind the rear cap to reinforce the limit steel mesh interlayer and the self-compacting concrete protective layer, and the outer circumference of the front of the nail body is fixed with one of the multiple steel bar binding grooves of the steel bar layer tied in the cast-in-place concrete, so that the front of the rear end force platform is attached to the outer side of the insulation board layer, and the inner circumference of the axial center blind hole of the front of the nail body and the inner circumference of the axial center through hole of the rear cap are both provided with internal threads of the same direction and specification. The number of the non-thermal bridge connectors arranged in parallel at intervals per square meter of wall surface is greater than 6. The wire mesh interlayer stopper is formed at the back of the rear cap, which can limit the position of the wire mesh and the thickness of the self-compacting concrete on the front and rear sides, and can significantly improve the stability and structural strength of the wire mesh interlayer and the outer wall of the insulation layer. The front part of the nail body is cast by the binding steel bar slot and the binding steel bar built into the cast-in-place concrete wall, which can significantly improve the bearing capacity of the nail body on the insulation layer and the outer wall layer. The inner periphery of the axial through hole at the front of the nail body and the inner periphery of the axial through hole of the rear cap are meshed and fastened with the threaded steel bar, which can significantly improve the supporting and stabilizing ability of the nail body to the wire mesh interlayer, the insulation layer and the outer wall layer. It is composed of a nail body with an internal thread formed on the inner periphery of the front axial center blind hole, a rear cap with an internal thread formed on the inner periphery of the axial center through hole, and a threaded steel bar inserted into the axial center through hole and the blind hole. The threaded steel bar fastens the nail body and the rear cap together by screwing. It has the advantages of firmly connecting the cast-in-place concrete wall and having strong supporting and fixing ability for the insulation layer, the wire mesh interlayer and the outer wall layer.

[0010] As an optimization, the rear end force-bearing platform is stabilized with the self-compacting concrete layer by a self-compacting concrete layer limiting assembly. The limiter is a rear cap with an axial center through hole and an internal thread, which is provided with an inner screw tube extending forward or backward. The front or rear of the rear cap and the outer periphery of the inner screw tube are provided with circumferentially uniformly distributed radial limiting plates. The rear end force-bearing platform and the self-compacting concrete layer limiting assembly are used together with the rear cap and the radial limiting plates to clamp the wire mesh interlayer and limit the thickness of the stabilized self-compacting concrete layer in front and behind the wire mesh interlayer, mainly to limit the minimum thickness of the stabilized self-compacting concrete layer behind the wire mesh interlayer. The self-compacting concrete layer limiting assembly is a radial limiting plate with radially distributed radial limiting plates corresponding to the axial ribs in the axial direction respectively formed behind the rear end force-bearing platform. The radial limiting plate is a radial bending limiting plate that is first bent counterclockwise, then clockwise, and finally counterclockwise from the base to the radial outer end. The rear end force-bearing platform uses the rear self-compacting concrete layer limiting assembly to limit and stabilize the self-compacting concrete, which is to limit the thickness of the concrete protective layer between the rear end force-bearing platform and the wire mesh interlayer and stabilize the self-compacting concrete layer. The self-compacting concrete layer limiting assembly is a radial limiting plate with radial distribution and axially corresponding to the axial reinforcement ribs at the rear of the rear end force-bearing platform.

[0011] The rear end force-bearing platform is a rear end force-bearing circular ring platform with axial peripheral through holes or through holes between adjacent radial limit plates. The peripheral through holes are axial through holes on the panel between adjacent radial limit plates within the outer edge of the rear end force-bearing circular ring platform, and the peripheral through holes are axial through holes between adjacent radial limit plates within the outer edge of the rear end force-bearing circular ring platform. The axial reinforcement ribs and the radial limit plates are four pieces that are evenly distributed in the circumferential direction and correspond to each other in the axial direction. The rear cap is provided with an axial peripheral through hole. The axial peripheral through hole is an axial peripheral through hole between adjacent radial limit plates on the rear end cap, or the axial peripheral through hole is an axial through hole between the limit plates provided in the middle of the outer circumference of the rear cap in the space between adjacent radial limit plates; the radial bending limit plate is an S-shaped radial bending limit plate. The same direction and same specification internal threads are the same specification internal threads that mesh with the same threaded steel bar. The nail body is provided with a front end cone tip that is also provided with circumferentially evenly distributed axial reinforcement ribs, and the nail body is provided with a plurality of binding steel bar clamping grooves on the outer circumference behind the front end cone tip. It has the advantages of firmly connecting the cast-in-place concrete wall, having strong support and fixation capabilities for the insulation layer, self-compacting concrete protective layer, wire mesh interlayer and outer wall layer, and facilitating construction.

[0012] As an optimization, the through-wall bolt airtight tube is a circular sleeve made of plastic, which is embedded and fixed with blue discs at both ends and in the middle to the cast-in-place concrete layer, the insulation board layer and the self-compacting concrete protective layer. A limiting fixing disc is arranged on the sleeve between the rear end blue disc and the adjacent inner blue disc to limit and fix the outer side of the limited insulation board layer. The steel bar layer tied inside the cast-in-place concrete is located between two adjacent blue discs. The sleeve is supported by internal through-wall bolts, and sealing plugs are installed at both ends of the sleeve to block thermal bridges. A plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the annular area near the outer circumference of the casing in front of the limiting fixing disk and the outer circumference of the adjacent casing; or a plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the rear of the limiting fixing disk and the outer circumference of the adjacent casing; or a plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the annular area near the outer circumference of the casing in front of the limiting fixing disk and the outer circumference of the adjacent casing, and a plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the rear of the limiting fixing disk and the outer circumference of the adjacent casing; the limiting fixing disk and the blue disk are both circular disks, and the diameter of the limiting fixing disk is several times the diameter of the blue disk. The diameter of the circular limiting fixing disk is 2-4 times the diameter of the circular blue disk. The inclined reinforcing ribs are in the form of a right triangle. The rear end is the end extending outward from the wall, and the front end is the end extending into the wall. The limiting fixing disk can significantly enhance the airtightness by limiting the insulation layer.

[0013] Axially spaced circumferential annular reinforcing ribs are arranged on the outer circumference of the sleeve between the circular blue disk and the limit fixing disk and between adjacent circular blue disks. The sealing plug is a circular plate-shaped plug cover with a circular plug tube on one side, and the outer circumference of the circular plug tube is provided with multiple spaced circumferential annular reinforcing ribs for matching with the inner circumferential sealing sleeve of the circular sleeve. The outer peripheral edge of the circular plate-shaped plug cover 7 is an annular slope with a high outer side and a low inner side, and the inner side of the annular slope is a flat-topped narrow high circumferential annular reinforcing rib, and the inner side of the flat-topped narrow high circumferential annular reinforcing rib is a flat-topped wide and short circumferential annular reinforcing rib, and multiple axially spaced parallel pointed high circumferential annular reinforcing ribs are arranged laterally inside the flat-topped wide and short circumferential annular reinforcing ribs. Axial strip reinforcing ribs are arranged on the outer circumference of the sleeve between the circular blue disk and the limit fixing disk and between adjacent circular blue disks. It has a good effect of limiting the support and stabilizing the insulation layer, and can also significantly enhance the airtight insulation capacity, which is beneficial to strengthening the supporting and fixing ability of the through-wall bolts on the insulation layer and the exterior wall.

[0014] The system for realizing the built-in insulation method of cast-in-place concrete wall of zero-carbon building of the present invention is a hierarchical structure of the wall from the inside to the outside, which includes cast-in-place concrete layer, insulation board layer and concrete protective layer in sequence, characterized in that a cast-in-place concrete inner steel bar layer close to the insulation board layer is preset at the position of the cast-in-place concrete layer, a wire mesh interlayer is preset at the position of the self-compacting concrete protective layer, a heat-free bridge connector for fixing the insulation board layer is connected between the cast-in-place concrete inner steel bar layer and the wire mesh interlayer, a through-wall bolt airtight pipe and through-wall bolts and sealing plugs at both ends are penetrated between the wire mesh interlayer of the cast-in-place concrete layer and the insulation board layer and the cast-in-place concrete inner steel bar layer of the self-compacting concrete protective layer, and the cast-in-place concrete protective layer and the self-compacting concrete protective layer are cast, so as to realize the heat insulation support of the cast-in-place concrete layer, the insulation board layer and the self-compacting concrete protective layer by the through-wall bolt airtight pipe and the through-wall bolts and sealing plugs at both ends. The provision of the cast-in-place concrete inner steel bar layer close to the insulation board layer in the cast-in-place concrete layer is beneficial to improving the structural strength of the wall and the building and facilitating the construction. After the concrete protective layer is changed to a self-compacting concrete protective layer with a wire mesh interlayer, the construction is convenient to ensure the construction quality and structural strength. The steel bar layer is tied in the cast-in-place concrete and connected with the wire mesh interlayer to set a non-thermal bridge connector, which is convenient for construction, and can ensure the setting strength and stability of the insulation board layer and the self-compacting concrete protective layer, and can also ensure that the connector does not cause a thermal bridge that damages the thermal insulation properties of the insulation board layer. Through-wall bolt airtight pipes are set through the concrete layer, the insulation board layer and the self-compacting concrete protective layer, which can ensure the bonding strength of the three wall layers and the supporting strength of the through-wall bolts to the insulation board layer and the self-compacting concrete protective layer, and can ensure that the insulation board layer will not lose the thermal insulation properties due to the through-wall bolts. In short, it has the advantages of simple structure, convenient construction, and can ensure the structural strength between the wall layers and the entire wall, good thermal insulation performance, and can meet the needs of zero-carbon building cast-in-place concrete wall insulation construction.

[0015] As an optimization, a decorative surface layer is provided on the outside of the self-compacting concrete protective layer after pouring, and the thickness decreases in sequence from the thermal insulation board layer, the cast-in-place concrete layer with a cast-in-place concrete inner steel bar layer, the self-compacting concrete protective layer with a wire mesh interlayer to the decorative surface layer. The cast-in-place concrete inner steel bar layer is provided in the middle of the outer half of the cast-in-place concrete layer, and the wire mesh interlayer is provided in the middle of the self-compacting concrete protective layer. The thickness of the thermal insulation board layer is 1.25 times the thickness of the cast-in-place concrete layer, and the thickness of the cast-in-place concrete layer is 4 times the thickness of the self-compacting concrete protective layer. It has the advantages of simple structure, convenient construction, and can ensure the structural strength between the layers of the wall and the entire wall, and good thermal insulation performance.

[0016] As an optimization, the thermal bridge-free connector is a plastic nail body with an axial center blind hole and axial reinforcement ribs evenly distributed on the outer circumference, which is fastened to a rear cap with an axial center through hole through a threaded steel bar that is threaded inside. The wire mesh interlayer is clamped between the rear end force platform of the nail body and the rear cap; a limiter is used in front of or behind the rear cap to reinforce the limit wire mesh interlayer and the self-compacting concrete protective layer, and the front outer periphery of the nail body is fixed to the cast-in-place concrete inner steel bar layer by one of the multiple binding steel bar grooves of the cast-in-place concrete inner steel bar layer, so that the front of the rear end force platform is attached to the outer side surface of the insulation board layer, and the inner periphery of the axial center blind hole of the front of the nail body and the inner periphery of the axial center through hole of the rear cap are both provided with internal threads of the same direction and specification. The wire mesh interlayer stopper is formed at the back of the rear cap, which can limit the position of the wire mesh and the thickness of the self-compacting concrete on the front and rear sides, and can significantly improve the stability and structural strength of the wire mesh interlayer and the outer wall of the insulation layer. The front part of the nail body is cast by the binding steel bar slot and the binding steel bar built into the cast-in-place concrete wall, which can significantly improve the bearing capacity of the nail body on the insulation layer and the outer wall layer. The inner periphery of the axial through hole at the front of the nail body and the inner periphery of the axial through hole of the rear cap are meshed and fastened with the threaded steel bar, which can significantly improve the supporting and stabilizing ability of the nail body to the wire mesh interlayer, the insulation layer and the outer wall layer. It is composed of a nail body with an internal thread formed on the inner periphery of the front axial center blind hole, a rear cap with an internal thread formed on the inner periphery of the axial center through hole, and a threaded steel bar inserted into the axial center through hole and the blind hole. The threaded steel bar fastens the nail body and the rear cap together by screwing. It has the advantages of firmly connecting the cast-in-place concrete wall and having strong supporting and fixing ability for the insulation layer, the wire mesh interlayer and the outer wall layer.

[0017] As an optimization, a self-compacting concrete layer limiting assembly is used behind the rear end force-bearing platform to limit and stabilize the self-compacting concrete layer. The limiter is a rear cap with an axial center through hole and an internal thread, which is provided with an inner screw tube extending forward or backward. A radial limiting plate evenly distributed in the circumferential direction is provided in front of or behind the rear cap and on the outer periphery of the inner screw tube. The rear end force-bearing platform and the self-compacting concrete layer limiting assembly are used together with the rear cap and the radial limiting plate to clamp the wire mesh interlayer and limit the thickness of the stable self-compacting concrete layer in front of and behind the wire mesh interlayer. The limitation is mainly to limit the minimum thickness of the stable self-compacting concrete layer behind the wire mesh interlayer. The self-compacting concrete layer limiting assembly is a radial limiting plate with radially distributed radial limiting plates corresponding to the axial direction of the axial reinforcement ribs respectively, which is provided behind the rear end force-bearing platform. The radial limiting plate is a radial bending limiting plate that is first bent counterclockwise from the base to the radial outer end, then bent clockwise, and finally bent counterclockwise. The self-compacting concrete layer limiting component is a radial limiting plate which is radially distributed and axially corresponds to the axial reinforcing ribs behind the rear end force bearing platform.

[0018] The rear end force-bearing platform is a rear end force-bearing circular ring platform with axial peripheral through holes or through holes between adjacent radial limit plates. The peripheral through holes are axial through holes on the panel between adjacent radial limit plates within the outer edge of the rear end force-bearing circular ring platform, and the peripheral through holes are axial through holes between adjacent radial limit plates within the outer edge of the rear end force-bearing circular ring platform. The axial reinforcement ribs and the radial limit plates are four pieces that are evenly distributed in the circumferential direction and correspond to each other in the axial direction. The rear cap is provided with an axial peripheral through hole. The axial peripheral through hole is an axial peripheral through hole between adjacent radial limit plates on the rear end cap, or the axial peripheral through hole is an axial through hole between the limit plates provided in the middle of the outer circumference of the rear cap in the space between adjacent radial limit plates; the radial bending limit plate is an S-shaped radial bending limit plate. The same direction and same specification internal threads are the same specification internal threads that mesh with the same threaded steel bar. The nail body is provided with a front end cone tip that is also provided with circumferentially evenly distributed axial reinforcement ribs, and the nail body is provided with a plurality of binding steel bar clamping grooves on the outer circumference behind the front end cone tip. It has the advantages of firmly connecting the cast-in-place concrete wall, having strong support and fixation capabilities for the insulation layer, self-compacting concrete protective layer, wire mesh interlayer and outer wall layer, and facilitating construction.

[0019] As an optimization, the through-wall bolt airtight tube is a circular sleeve made of plastic, which is embedded and fixed with blue discs at both ends and in the middle to the cast-in-place concrete layer, the insulation board layer and the self-compacting concrete protective layer. A limiting fixing disc is arranged on the sleeve between the rear end blue disc and the adjacent inner blue disc to limit and fix the outer side of the limited insulation board layer. The steel bar layer tied inside the cast-in-place concrete is located between two adjacent blue discs. The sleeve is supported by internal through-wall bolts, and sealing plugs are installed at both ends of the sleeve to block thermal bridges. A plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the annular area near the outer circumference of the casing in front of the limiting fixing disk and the outer circumference of the adjacent casing; or a plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the rear of the limiting fixing disk and the outer circumference of the adjacent casing; or a plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the annular area near the outer circumference of the casing in front of the limiting fixing disk and the outer circumference of the adjacent casing, and a plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the rear of the limiting fixing disk and the outer circumference of the adjacent casing; the limiting fixing disk and the blue disk are both circular disks, and the diameter of the limiting fixing disk is several times the diameter of the blue disk. The diameter of the circular limiting fixing disk is 2-4 times the diameter of the circular blue disk. The inclined reinforcing ribs are in the form of a right triangle. The rear end is the end extending outward from the wall, and the front end is the end extending into the wall. The limiting fixing disk can significantly enhance the airtightness by limiting the insulation layer.

[0020] Axially spaced circumferential annular reinforcing ribs are arranged on the outer circumference of the sleeve between the circular blue disk and the limit fixing disk and between adjacent circular blue disks. The sealing plug is a circular plate-shaped plug cover with a circular plug tube on one side, and the outer circumference of the circular plug tube is provided with multiple spaced circumferential annular reinforcing ribs for matching with the inner circumferential sealing sleeve of the circular sleeve. The outer peripheral edge of the circular plate-shaped plug cover 7 is an annular slope with a high outer side and a low inner side, and the inner side of the annular slope is a flat-topped narrow high circumferential annular reinforcing rib, and the inner side of the flat-topped narrow high circumferential annular reinforcing rib is a flat-topped wide and short circumferential annular reinforcing rib, and multiple axially spaced parallel pointed high circumferential annular reinforcing ribs are arranged laterally inside the flat-topped wide and short circumferential annular reinforcing ribs. Axial strip reinforcing ribs are arranged on the outer circumference of the sleeve between the circular blue disk and the limit fixing disk and between adjacent circular blue disks. It has a good effect of limiting the support and stabilizing the insulation layer, and can also significantly enhance the airtight insulation capacity, which is beneficial to strengthening the supporting and fixing ability of the through-wall bolts on the insulation layer and the exterior wall.

[0021] After adopting the above technical scheme, the built-in insulation method and system for cast-in-place concrete walls of zero-carbon buildings of the present invention have the advantages of simple structure, which is convenient for construction, can ensure the structural strength between the wall layers and the entire wall, has good thermal insulation performance, and can meet the construction needs of cast-in-place concrete walls of zero-carbon buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic cross-sectional structure diagram of a first embodiment of a system for realizing the method for built-in thermal insulation of cast-in-place concrete walls of zero-carbon buildings of the present invention. Figure 2 It is a structural schematic diagram of a self-compacting concrete protective layer of a first embodiment of a system for realizing the method for built-in thermal insulation of cast-in-place concrete walls of zero-carbon buildings of the present invention. Figure 3 It is a schematic structural diagram of a second embodiment of a system for realizing the method for built-in insulation of cast-in-place concrete walls of zero-carbon buildings of the present invention, including a self-compacting concrete protective layer, a wire mesh interlayer and a thermal bridge-free connector.

[0023] Figure 4 It is a schematic cross-sectional structure diagram of a thermal bridge-free connector of a first embodiment of a system for realizing the method for built-in insulation of cast-in-place concrete walls of zero-carbon buildings of the present invention. Figure 5-6 They are respectively a three-dimensional structural schematic diagram and a rear-view structural schematic diagram of the main part of the non-thermal bridge connector of the first embodiment of the system for realizing the built-in insulation method of cast-in-place concrete walls of zero-carbon buildings of the present invention. Figure 7-8 They are respectively a three-dimensional structural schematic diagram and a front structural schematic diagram of the accessory part of the non-thermal bridge connector of the first embodiment of the system for realizing the built-in insulation method of cast-in-place concrete walls of zero-carbon buildings of the present invention. Fig. 9 It is a schematic diagram of the use status of the first embodiment of the system for realizing the zero-carbon building cast-in-place concrete wall built-in insulation method of the present invention without thermal bridge connectors.

[0024] Fig.10 It is a side structural schematic diagram of a through-wall bolt airtight pipe of a first embodiment of a system for realizing the built-in insulation method of cast-in-place concrete walls of zero-carbon buildings of the present invention. Fig.11 yes Figure 1 Schematic diagram of the cross-sectional structure along the AA axis. Fig.12 It is a schematic cross-sectional structure diagram of a through-wall bolt airtight pipe of a first embodiment of a system for realizing the built-in insulation method of cast-in-place concrete walls of zero-carbon buildings of the present invention. Figure 13-14 It is a side view structural schematic diagram and a front view structural schematic diagram of a plug cover equipped with a through-wall bolt airtight pipe in a first embodiment of a system for realizing the built-in insulation method of cast-in-place concrete wall of a zero-carbon building of the present invention. Figure 15-16 They are respectively a first embodiment of a system for realizing the method for built-in thermal insulation of cast-in-place concrete walls of zero-carbon buildings of the present invention and side structural schematic diagrams of two other types of through-wall bolt airtight tubes. DETAILED DESCRIPTION

[0025] The built-in insulation method of the cast-in-place concrete wall of the zero-carbon building of the present invention is that the wall adopts a hierarchical structure of cast-in-place concrete layer, insulation board layer and concrete protective layer from the inside to the outside, through-wall bolt airtight tubes are penetrated between the concrete inner steel bar layers, and the cast-in-place concrete layer and the self-compacting concrete protective layer are cast. The position of the cast-in-place concrete layer is preset with a cast-in-place concrete inner steel bar layer close to the insulation board layer, and the position of the self-compacting concrete protective layer is preset with a wire mesh interlayer. A thermal bridge-free connector for fixing the insulation board layer is connected between the cast-in-place concrete inner steel bar layer and the wire mesh interlayer, and through-wall bolt airtight tubes and through-wall bolts and sealing plugs at both ends are penetrated between the wire mesh interlayer of the cast-in-place concrete layer and the cast-in-place concrete inner steel bar layers of the insulation board layer and the self-compacting concrete protective layer. The cast-in-place concrete layer and the self-compacting concrete protective layer are cast, so as to realize the thermal insulation support of the cast-in-place concrete layer, the insulation board layer and the self-compacting concrete protective layer by the through-wall bolt airtight tubes and the through-wall bolts and sealing plugs at both ends. Providing a cast-in-place concrete inner steel bar layer close to the insulation board layer in the cast-in-place concrete layer is beneficial to improving the structural strength of the wall and the building and facilitating construction. After the concrete protective layer is changed to a self-compacting concrete protective layer with a wire mesh interlayer, construction is convenient to ensure construction quality and structural strength. Providing a heat-bridge-free connector to connect the cast-in-place concrete inner steel bar layer and the wire mesh interlayer can facilitate construction, ensure the setting strength and stability of the insulation board layer and the self-compacting concrete protective layer, and ensure that the connector does not cause a heat bridge that damages the thermal insulation properties of the insulation board layer. Providing a through-wall bolt airtight pipe through the concrete layer, the insulation board layer and the self-compacting concrete protective layer can ensure the bonding strength of the three wall layers and the supporting strength of the through-wall bolts to the insulation board layer and the self-compacting concrete protective layer, and can ensure that the insulation board layer will not lose the thermal insulation properties due to the through-wall bolts. In short, it has the advantages of simple structure, convenient construction, and can ensure the structural strength between the wall layers and the entire wall. It has good thermal insulation performance and can meet the insulation construction needs of cast-in-place concrete walls in zero-carbon buildings.

[0026] A decorative surface layer is arranged on the outside of the self-compacting concrete protective layer after pouring, and the thickness decreases from the thermal insulation board layer, the cast-in-place concrete layer with a cast-in-place concrete inner steel bar layer, the self-compacting concrete protective layer with a wire mesh interlayer to the decorative surface layer. The cast-in-place concrete inner steel bar layer is arranged in the middle of the outer half of the cast-in-place concrete layer, and the wire mesh interlayer is arranged in the middle of the self-compacting concrete protective layer. The thickness of the thermal insulation board layer is 1.25 times the thickness of the cast-in-place concrete layer, and the thickness of the cast-in-place concrete layer is 4 times the thickness of the self-compacting concrete protective layer. The number of the thermal bridge-free connectors arranged in parallel at intervals on each square meter of the wall is greater than 6. It has the advantages of simple structure, convenient construction, and can ensure the structural strength between the layers of the wall and the entire wall, and good thermal insulation performance.

[0027] The thermal bridge-free connector is a plastic nail body with an axial center blind hole and axial reinforcement ribs uniformly distributed on the outer circumference, which is fastened to a rear cap with an axial center through hole through a threaded steel bar that is inserted into the nail body and is screwed together. The wire mesh interlayer is clamped between the rear end force platform of the nail body and the rear cap; a limiter is used in front of or behind the rear cap to reinforce the limit wire mesh interlayer and the self-compacting concrete protective layer; the front periphery of the nail body is fixed to the cast-in-place concrete inner steel bar layer by one of the multiple binding steel bar grooves of the cast-in-place concrete inner steel bar layer, so that the front of the rear end force platform is fixed to the outer side surface of the insulation board layer, and the inner periphery of the axial center blind hole of the front of the nail body and the inner periphery of the axial center through hole of the rear cap are both provided with internal threads of the same direction and specification. The wire mesh interlayer stopper is formed at the back of the rear cap, which can limit the position of the wire mesh and the thickness of the self-compacting concrete on the front and rear sides, and can significantly improve the stability and structural strength of the wire mesh interlayer and the outer wall of the insulation layer. The front part of the nail body is cast by the binding steel bar slot and the binding steel bar built into the cast-in-place concrete wall, which can significantly improve the bearing capacity of the nail body on the insulation layer and the outer wall layer. The inner periphery of the axial through hole at the front of the nail body and the inner periphery of the axial through hole of the rear cap are meshed and fastened with the threaded steel bar, which can significantly improve the supporting and stabilizing ability of the nail body to the wire mesh interlayer, the insulation layer and the outer wall layer. It is composed of a nail body with an internal thread formed on the inner periphery of the front axial center blind hole, a rear cap with an internal thread formed on the inner periphery of the axial center through hole, and a threaded steel bar inserted into the axial center through hole and the blind hole. The threaded steel bar fastens the nail body and the rear cap together by screwing. It has the advantages of firmly connecting the cast-in-place concrete wall and having strong supporting and fixing ability for the insulation layer, the wire mesh interlayer and the outer wall layer.

[0028] The rear end force-bearing platform is stabilized with the self-compacting concrete layer limit assembly behind it. The limiter is a rear cap with an axial center through hole and an internal thread, which is extended forward or backward to set an internal screw tube. The front or back of the rear cap and the outer periphery of the internal screw tube are provided with circumferentially uniformly distributed radial limit plates. The rear end force-bearing platform and the self-compacting concrete layer limit assembly, the rear cap and the radial limit plates are used to clamp the wire mesh interlayer and limit the thickness of the stabilized self-compacting concrete layer in front and behind the wire mesh interlayer, and limit the minimum thickness of the stabilized self-compacting concrete layer behind the wire mesh interlayer. The self-compacting concrete layer limit assembly is a radial limit plate with radial distribution and axially corresponding to the axial reinforcement ribs at the rear end of the rear end force-bearing platform. The radial limit plate is a radial bending limit plate that is first bent counterclockwise, then clockwise, and finally counterclockwise from the base to the radial outer end. The self-compacting concrete layer limit assembly is a radial limit plate with radial distribution and axially corresponding to the axial reinforcement ribs at the rear end of the rear end force-bearing platform.

[0029] The rear end force-bearing platform is a rear end force-bearing circular ring platform with axial peripheral through holes between adjacent radial limit plates, or it can be a through hole. The peripheral through holes are axial through holes provided on the panel between adjacent radial limit plates within the outer edge of the rear end force-bearing circular ring platform, and the peripheral through holes are axial through holes between adjacent radial limit plates within the outer edge of the rear end force-bearing circular ring platform. The axial reinforcement ribs and the radial limit plates are four pieces that are evenly distributed circumferentially and correspond to each other axially. The rear cap is provided with axial peripheral through holes. The axial peripheral through holes are axial peripheral through holes provided between adjacent radial limit plates on the rear end cap, or the axial peripheral through holes are axial through holes between the limit plates provided in the middle of the outer circumference of the rear end cap in the space between adjacent radial limit plates; the radial bending limit plate is an S-shaped radial bending limit plate. The same-direction and same-specification internal threads are same-specification internal threads that mesh with the same threaded steel bar. The nail body is provided with a front cone tip with axial reinforcement ribs evenly distributed around the circumference, and the nail body is provided with multiple steel bar binding grooves on the outer periphery behind the front cone tip. It has the advantages of firmly connecting the cast-in-place concrete wall, strong support and fixation ability for the insulation layer, self-compacting concrete protective layer, wire mesh interlayer and outer wall layer, and convenient construction.

[0030] The through-wall bolt airtight tube is a circular sleeve made of plastic, and is embedded and fixed with blue discs at both ends and in the middle to the cast-in-place concrete layer, the insulation board layer and the self-compacting concrete protective layer. A limiting fixing disc is arranged on the sleeve between the rear end blue disc and the adjacent inner blue disc to limit and fix the outer side of the limited insulation board layer. The steel bar layer tied inside the cast-in-place concrete is located between two adjacent blue discs. The sleeve is supported by internal through-wall bolts, and sealing plugs are installed at both ends of the sleeve to block thermal bridges. A plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the annular area near the outer circumference of the casing in front of the limiting fixing disk and the outer circumference of the adjacent casing; or a plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the rear of the limiting fixing disk and the outer circumference of the adjacent casing; or a plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the annular area near the outer circumference of the casing in front of the limiting fixing disk and the outer circumference of the adjacent casing, and a plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the rear of the limiting fixing disk and the outer circumference of the adjacent casing; the limiting fixing disk and the blue disk are both circular disks, and the diameter of the limiting fixing disk is several times the diameter of the blue disk. The diameter of the circular limiting fixing disk is 2-4 times the diameter of the circular blue disk. The inclined reinforcing ribs are in the form of a right triangle. The rear end is the end extending outward from the wall, and the front end is the end extending into the wall. The limiting fixing disk can significantly enhance the airtightness by limiting the insulation layer.

[0031] Axially spaced circumferential annular reinforcing ribs are arranged on the outer circumference of the sleeve between the circular blue disk and the limit fixing disk and between adjacent circular blue disks. The sealing plug is a circular plate-shaped plug cover with a circular plug tube on one side, and the outer circumference of the circular plug tube is provided with multiple spaced circumferential annular reinforcing ribs for matching with the inner circumferential sealing sleeve of the circular sleeve. The outer peripheral edge of the circular plate-shaped plug cover 7 is an annular slope with a high outer side and a low inner side, and the inner side of the annular slope is a flat-topped narrow high circumferential annular reinforcing rib, and the inner side of the flat-topped narrow high circumferential annular reinforcing rib is a flat-topped wide and short circumferential annular reinforcing rib, and multiple axially spaced parallel pointed high circumferential annular reinforcing ribs are arranged laterally inside the flat-topped wide and short circumferential annular reinforcing ribs. Axial strip reinforcing ribs are arranged on the outer circumference of the sleeve between the circular blue disk and the limit fixing disk and between adjacent circular blue disks. It has a good effect of limiting the support and stabilizing the insulation layer, and can also significantly enhance the airtight insulation capacity, which is beneficial to strengthening the supporting and fixing ability of the through-wall bolts on the insulation layer and the exterior wall.

[0032] The system embodiment for implementing the zero-carbon building cast-in-place concrete wall built-in insulation method of the present invention is as follows.

[0033] Embodiment 1, as Figure 1-2As shown in 4-16, the system for realizing the built-in insulation method of cast-in-place concrete wall of zero-carbon building of the present invention is a hierarchical structure of the wall from the inside to the outside, which includes a cast-in-place concrete layer 1, an insulation board layer 2 and a concrete protective layer in sequence. The position of the cast-in-place concrete layer 1 is preset with a cast-in-place concrete inner steel bar layer 10 close to the insulation board layer 2, and the position of the self-compacting concrete protective layer 3 is preset with a wire mesh interlayer 30. The cast-in-place concrete inner steel bar layer 10 and the wire mesh interlayer 30 are connected to fix a thermal bridge-free connector for setting the insulation board layer 2. Through-wall bolt airtight tube 8 and through-wall bolts and sealing plugs at both ends are penetrated between the cast-in-place concrete inner steel bar layer 10 of the cast-in-place concrete layer 1 and the insulation board layer 2 and the wire mesh interlayer 30 of the self-compacting concrete protective layer 3. The cast-in-place concrete layer 1 and the self-compacting concrete protective layer 3 are cast to realize the thermal insulation support of the cast-in-place concrete layer 1, the insulation board layer 2 and the self-compacting concrete protective layer 3 by the through-wall bolt airtight tube 8 and the through-wall bolts and sealing plugs at both ends. Providing a cast-in-place concrete inner steel bar layer close to the insulation board layer in the cast-in-place concrete layer is beneficial to improving the structural strength of the wall and the building and facilitating construction. After the concrete protective layer is changed to a self-compacting concrete protective layer with a wire mesh interlayer, construction is convenient to ensure construction quality and structural strength. Providing a heat-bridge-free connector to connect the cast-in-place concrete inner steel bar layer and the wire mesh interlayer can facilitate construction, ensure the setting strength and stability of the insulation board layer and the self-compacting concrete protective layer, and ensure that the connector does not cause a heat bridge that damages the thermal insulation properties of the insulation board layer. Providing a through-wall bolt airtight pipe through the concrete layer, the insulation board layer and the self-compacting concrete protective layer can ensure the bonding strength of the three wall layers and the supporting strength of the through-wall bolts to the insulation board layer and the self-compacting concrete protective layer, and can ensure that the insulation board layer will not lose the thermal insulation properties due to the through-wall bolts. In short, it has the advantages of simple structure, convenient construction, and can ensure the structural strength between the wall layers and the entire wall. It has good thermal insulation performance and can meet the insulation construction needs of cast-in-place concrete walls in zero-carbon buildings.

[0034] The self-compacting concrete protective layer 3 is provided with a decorative surface layer 4 on the outside, and the thickness decreases from the thermal insulation board layer 2, the cast-in-place concrete layer 1 provided with a cast-in-place concrete inner steel bar layer 10, the self-compacting concrete protective layer 3 provided with a wire mesh interlayer 30 to the decorative surface layer 4. The cast-in-place concrete inner steel bar layer 10 is arranged in the middle of the outer half of the cast-in-place concrete layer 1, and the wire mesh interlayer 30 is arranged in the middle of the self-compacting concrete protective layer 3. The thickness of the thermal insulation board layer 2 is 1.25 times the thickness of the cast-in-place concrete layer 1, and the thickness of the cast-in-place concrete layer 1 is 4 times the thickness of the self-compacting concrete protective layer 3. The number of the thermal bridge-free connectors arranged in parallel at intervals on each square meter of the wall is greater than 6. It has the advantages of simple structure, convenient construction, and can ensure the structural strength between the layers of the wall and the entire wall, and good thermal insulation performance.

[0035] The thermal bridge-free connector is a plastic nail body 5 with an axial center blind hole and axial reinforcement ribs 53 evenly distributed on the outer circumference, which is fastened to a rear cap 6 with an axial center through hole through a threaded steel bar 59 that is threaded and inserted into the nail body 5. The wire mesh interlayer 30 is clamped between the rear end force platform 50 of the nail body 5 and the rear cap 6; the front (or rear) of the rear cap 6 is reinforced with a limiter to limit the wire mesh interlayer 30 and the self-compacting concrete protective layer 3, and the front outer periphery of the nail body 5 is fixed with one of the multiple binding steel bar grooves 57 of the cast-in-place concrete inner steel bar layer 10, so that the front of the rear end force platform 50 is fixed to the outer side surface of the insulation board layer 2, and the inner periphery of the axial center blind hole of the front of the nail body 5 and the inner periphery of the axial center through hole of the rear cap 6 are both provided with internal threads of the same direction and specification. The wire mesh interlayer stopper is formed at the back of the rear cap, which can limit the position of the wire mesh and the thickness of the self-compacting concrete on the front and rear sides, and can significantly improve the stability and structural strength of the wire mesh interlayer and the outer wall of the insulation layer. The front part of the nail body is cast by the binding steel bar slot and the binding steel bar built into the cast-in-place concrete wall, which can significantly improve the bearing capacity of the nail body on the insulation layer and the outer wall layer. The inner periphery of the axial through hole at the front of the nail body and the inner periphery of the axial through hole of the rear cap are meshed and fastened with the threaded steel bar, which can significantly improve the supporting and stabilizing ability of the nail body to the wire mesh interlayer, the insulation layer and the outer wall layer. It is composed of a nail body with an internal thread formed on the inner periphery of the front axial center blind hole, a rear cap with an internal thread formed on the inner periphery of the axial center through hole, and a threaded steel bar inserted into the axial center through hole and the blind hole. The threaded steel bar fastens the nail body and the rear cap together by screwing. It has the advantages of firmly connecting the cast-in-place concrete wall and having strong supporting and fixing ability for the insulation layer, the wire mesh interlayer and the outer wall layer.

[0036] The self-compacting concrete layer limiting assembly 51 is used to limit and stabilize the self-compacting concrete layer 3 behind the rear force-bearing platform 50. The limiter is a rear cap 6 with an axial center through hole and an internal thread, which is extended forward (or backward) to set an internal screw tube 60. The front (or rear) of the rear cap 6 and the outer periphery of the internal screw tube are provided with radial limiting plates 61 evenly distributed in the circumferential direction. The rear force-bearing platform 50 and the self-compacting concrete layer limiting assembly 51, the rear cap 6 and the radial limiting plates 61 are used to clamp the wire mesh interlayer 30 and limit and stabilize the thickness of the self-compacting concrete layer 3 in front and behind the wire mesh interlayer 30. The self-compacting concrete layer limiting assembly 51 is a radial limiting plate 61 distributed radially and axially corresponding to the axial reinforcement ribs 53 at the rear of the rear force-bearing platform 50. The radial limiting plate 61 is a radial bending limiting plate that is first bent counterclockwise from the base to the radial outer end, then bent clockwise, and finally bent counterclockwise. The self-compacting concrete layer limiting assembly 51 is a radial limiting plate which is radially distributed and axially corresponds to the axial reinforcing ribs at the rear of the rear end force bearing platform 50 .

[0037] The rear end force-bearing platform 50 is a rear end force-bearing circular ring platform with an axial peripheral through hole 52 between adjacent radial limit plates, or it can be a peripheral through hole. The peripheral through hole is an axial through hole provided on the panel between adjacent radial limit plates within the outer edge of the rear end force-bearing circular ring platform, and the peripheral through hole is an axial through hole between adjacent radial limit plates within the outer edge of the rear end force-bearing circular ring platform. The axial reinforcing ribs 53 and the radial limit plates are four pieces that are evenly distributed in the circumferential direction and correspond to each other in the axial direction. The rear cap 6 is provided with an axial peripheral through hole 66, or it can be a peripheral through hole. The axial peripheral through hole 66 is an axial through hole 66 between the limit plates provided in the middle of the outer circumference of the rear cap in the space between adjacent radial limit plates, or it can be that the axial peripheral through hole is an axial peripheral through hole provided between adjacent radial limit plates on the rear cap; the radial bending limit plate is an S-shaped radial bending limit plate. The same-direction and same-specification internal threads are same-specification internal threads that mesh with the same threaded steel bar 59. The nail body 5 is provided with a front end cone tip which is also provided with axial reinforcement ribs evenly distributed in the circumference, and the nail body 5 is provided with a plurality of steel bar binding grooves 57 on the outer periphery behind the front end cone tip. It has the advantages of firmly connecting the cast-in-place concrete wall, having strong supporting and fixing capabilities for the insulation layer, the self-compacting concrete protective layer, the steel mesh interlayer and the outer wall layer, and being convenient for construction.

[0038] like Figure 10-14 As shown, the through-wall bolt airtight tube 8 is a circular sleeve made of plastic, and is embedded and fixed with blue discs 80 at both ends and in the middle to the cast-in-place concrete layer 1, the insulation board layer 2 and the self-compacting concrete protective layer 3. A limiting fixing plate 88 is arranged on the sleeve between the rear end blue disc 82 and the adjacent inner blue disc 80 to limit and fix the outer side of the insulation board layer 2. The cast-in-place concrete inner steel bar layer 10 is located between two adjacent blue discs 80. The sleeve is supported by the internal through-wall bolts, and sealing plugs are installed at both ends of the sleeve to block the thermal bridge. A plurality of circumferentially evenly distributed inclined reinforcing ribs 81 are arranged between the annular area in front of the limiting fixing plate 88 close to the outer periphery of the sleeve and the outer periphery of the adjacent sleeve. As shown Fig.15 As shown, a plurality of circumferentially evenly distributed inclined reinforcing ribs 81 may also be provided between the rear of the limiting fixing plate 88 and the outer periphery of the adjacent sleeve. Fig.16 As shown, a plurality of circumferentially evenly distributed inclined reinforcing ribs 81 may be provided between the annular area near the outer circumference of the sleeve in front of the limiting fixing disk 88 and the outer circumference of the adjacent sleeve, and a plurality of circumferentially evenly distributed inclined reinforcing ribs 81 may be provided between the rear of the limiting fixing disk 88 and the outer circumference of the adjacent sleeve; the limiting fixing disk 88 and the blue disk are both circular disks, and the diameter of the limiting fixing disk 88 is several times the diameter of the blue disk. The diameter of the circular limiting fixing disk 88 is 2-4 times the diameter of the circular blue disk. The inclined reinforcing ribs 81 are in the form of a right triangle. The front end blue disk is numbered 83. The rear end is the end extending outward from the wall, and the front end is the end extending into the wall. The limiting fixing disk can significantly enhance the airtightness by limiting the insulation layer.

[0039] Axially spaced circumferential annular reinforcing ribs 85 are arranged on the outer circumference of the sleeve between the circular blue disk and the position-limiting fixed disk 88 and between adjacent circular blue disks. The sealing plug is a circular plate-shaped plug cover 7 with a circular plug tube 70 formed on one side, and the outer circumference of the circular plug 70 is formed with multiple spaced circumferential annular reinforcing ribs for sealing with the inner circumference of the circular sleeve. The outer circumferential edge of the circular plate-shaped plug cover 7 is an annular slope 71 with a high outer side and a low inner side, and the inner side of the annular slope 71 is a flat-topped narrow high circumferential annular reinforcing rib 72, and the inner side of the flat-topped narrow high circumferential annular reinforcing rib 72 is a flat-topped wide and short circumferential annular reinforcing rib 73, and multiple axially spaced parallel pointed high circumferential annular reinforcing ribs 74 are arranged in parallel in the inner side of the flat-topped wide and short circumferential annular reinforcing rib 73. Axial strip reinforcing ribs are arranged on the outer circumference of the sleeve between the circular blue disk and the position-limiting fixed disk and between adjacent circular blue disks. It has a good effect of limiting the support and stabilizing the insulation layer, and can also significantly enhance the airtight insulation capacity, which is beneficial to strengthening the supporting and fixing ability of the through-wall bolts on the insulation layer and the exterior wall.

[0040] Embodiment 2, as Figure 3 As shown, the difference between the method and system for realizing the built-in insulation of cast-in-place concrete walls of zero-carbon buildings of the present invention and the above-mentioned embodiment 1 is that: a plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the rear of the limiting fixing plate 88 and the outer periphery of the adjacent casings. Alternatively, a plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the annular area near the outer periphery of the casing in front of the limiting fixing plate and the outer periphery of the adjacent casings, and a plurality of circumferentially uniformly distributed inclined reinforcing ribs are arranged between the rear of the limiting fixing plate and the outer periphery of the adjacent casings. Compared with the above-mentioned embodiment 1, the support and fixing strength of the limiting fixing plate on the insulation board layer can be significantly enhanced.

[0041] In summary, the built-in insulation method and system for cast-in-place concrete walls of zero-carbon buildings of the present invention have the advantages of simple structure, convenient construction, and can ensure the structural strength between the wall layers and the entire wall, and have good thermal insulation performance, which can meet the insulation construction needs of cast-in-place concrete walls of zero-carbon buildings.

Claims

1. A method for built-in insulation of cast-in-place concrete walls of zero-carbon buildings, wherein the wall body adopts a layered structure of cast-in-place concrete layer, insulation board layer and concrete protective layer from inside to outside, characterized in that Through-wall bolt airtight pipes are provided between the cast-in-place concrete inner-tied steel bar layers, and the cast-in-place concrete layer and the self-compacting concrete protective layer are cast. The cast-in-place concrete inner-tied steel bar layer close to the thermal insulation board layer is preset at the position of the cast-in-place concrete layer, and a wire mesh interlayer is preset at the position of the self-compacting concrete protective layer. The cast-in-place concrete inner-tied steel bar layer and the wire mesh interlayer are connected to a non-thermal bridge connector for fixing the thermal insulation board layer, and through-wall bolt airtight pipes and through-wall bolts and sealing plugs at both ends are provided between the wire mesh interlayer of the cast-in-place concrete layer and the thermal insulation board layer and the cast-in-place concrete inner-tied steel bar layer of the self-compacting concrete protective layer, and the self-compacting concrete protective layer and the self-compacting concrete protective layer are cast, so as to realize the thermal insulation support of the through-wall bolt airtight pipes and through-wall bolts and sealing plugs at both ends for the concrete protective layer, the thermal insulation board layer and the compacted concrete protective layer; The thermal bridge-free connector is a plastic nail body with an axial center blind hole and axial reinforcement ribs uniformly distributed on the outer circumference, which is fastened to a rear cap with an axial center through hole through a threaded steel bar that is threaded and inserted into the nail body. The wire mesh interlayer is clamped between the rear end force platform of the nail body and the rear cap. A limiter is used in front of or behind the rear cap to reinforce the limit wire mesh interlayer and the dense concrete protective layer. The front periphery of the nail body is fixed to the cast-in-place concrete inner steel bar layer by one of the multiple binding steel bar grooves of the cast-in-place concrete inner steel bar layer, so that the front of the rear end force platform is fixed to the outer side surface of the insulation board layer, and the inner periphery of the axial center blind hole of the front of the nail body and the inner periphery of the axial center through hole of the rear cap are both provided with internal threads of the same direction and specification.

2. The method for built-in insulation of cast-in-place concrete walls of zero-carbon buildings according to claim 1, characterized in that A decorative surface layer is arranged outside the poured self-compacting concrete protective layer, and the thickness decreases in sequence from the thermal insulation board layer, the cast-in-place concrete layer with a cast-in-place concrete inner steel bar layer, the self-compacting concrete protective layer with a wire mesh interlayer to the decorative surface layer.

3. The method for built-in insulation of cast-in-place concrete walls of zero-carbon buildings according to claim 1, characterized in that The rear end force-bearing platform is stabilized with the self-compacting concrete layer by a self-compacting concrete layer limiting component. The limiter is a rear cap with an axial center through hole and an internal thread, and an internal screw tube is extended forward or backward. The front or back of the rear cap and the outer periphery of the internal screw tube are provided with circumferentially evenly distributed radial limiting plates. The rear end force-bearing platform and the self-compacting concrete layer limiting component are used together with the rear cap and the radial limiting plates to clamp the wire mesh interlayer and limit the thickness of the stabilized self-compacting concrete layer in front and behind the wire mesh interlayer.

4. The method for built-in insulation of cast-in-place concrete walls of zero-carbon buildings according to any one of claims 1-2, characterized in that The through-wall bolt airtight tube is a circular sleeve made of plastic, and is embedded and fixed to the cast-in-place concrete layer, the insulation board layer and the self-compacting concrete protective layer with flanges at both ends and in the middle. A limiting fixing plate is arranged on the sleeve between the rear end flange and the adjacent inner middle flange to limit and fix the outer side of the limited insulation board layer. The cast-in-place concrete inner steel bar layer is located between the two adjacent middle flanges. The sleeve is supported by internal through-wall bolts, and sealing plugs are installed at both ends of the sleeve to block thermal bridges.

5. A system for implementing the method for built-in insulation of cast-in-place concrete walls of zero-carbon buildings as described in claim 1, wherein the hierarchical structure of the wall from the inside to the outside sequentially comprises a cast-in-place concrete layer, an insulation board layer and a concrete protective layer, characterized in that A cast-in-place concrete inner steel bar layer close to the thermal insulation board layer is preset at the position of the cast-in-place concrete layer, a wire mesh interlayer is preset at the position of the self-compacting concrete protective layer, a heat-free bridge connector for fixing the thermal insulation board layer is connected between the cast-in-place concrete inner steel bar layer and the wire mesh interlayer, a through-wall bolt airtight pipe and through-wall bolts and sealing plugs at both ends are penetrated between the wire mesh interlayer of the cast-in-place concrete layer and the thermal insulation board layer and the cast-in-place concrete inner steel bar layer of the self-compacting concrete protective layer, the cast-in-place concrete protective layer and the self-compacting concrete protective layer are cast, and the through-wall bolt airtight pipe and through-wall bolts and sealing plugs at both ends provide thermal insulation support for the cast-in-place concrete layer, the thermal insulation board layer and the self-compacting concrete protective layer; The thermal bridge-free connector is a plastic nail body with an axial center blind hole and axial reinforcement ribs uniformly distributed on the outer circumference, which is fastened to a rear cap with an axial center through hole through a threaded steel bar that is inserted into the nail body and is screwed together. The wire mesh interlayer is clamped between the rear end force platform of the nail body and the rear cap; a limiter is used in front of or behind the rear cap to reinforce the limit wire mesh interlayer and the self-compacting concrete protective layer; the front periphery of the nail body is fixed to the cast-in-place concrete inner steel bar layer by one of the multiple binding steel bar grooves of the cast-in-place concrete inner steel bar layer, so that the front of the rear end force platform is fixed to the outer side surface of the insulation board layer, and the inner periphery of the axial center blind hole of the front of the nail body and the inner periphery of the axial center through hole of the rear cap are both provided with internal threads of the same direction and specification.

6. The system according to claim 5, characterized in that A decorative surface layer is arranged outside the poured self-compacting concrete protective layer, and the thickness decreases in sequence from the thermal insulation board layer, the cast-in-place concrete layer with a cast-in-place concrete inner steel bar layer, the self-compacting concrete protective layer with a wire mesh interlayer to the decorative surface layer.

7. The system according to claim 5, characterized in that A self-compacting concrete layer limiting assembly is used behind the rear end force platform to limit and stabilize the self-compacting concrete layer. The limiter is a rear cap with an axial center through hole and an internal thread, and an internal screw tube is extended forward or backward. The front or back of the rear cap and the outer periphery of the internal screw tube are provided with circumferentially evenly distributed radial limiting plates. The rear end force platform and the self-compacting concrete layer limiting assembly are used together with the rear cap and the radial limiting plates to clamp the wire mesh interlayer and limit and stabilize the thickness of the self-compacting concrete layer in front of and behind the wire mesh interlayer.

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