Post-cast strip structure and heat preservation integrated forming construction method

Abstract

The invention discloses a post-cast strip structure and heat preservation integrated forming construction method, and belongs to the technical field of constructional engineering construction.The method includes the steps that floating dust and sundries in a post-cast strip groove and on pre-cast concrete connecting faces on the two sides are cleaned, the connecting faces are subjected to roughening treatment, and steel bars exposed in the area are derusted; then a continuously-through steel reinforcement framework is bound in the post-cast strip groove; connecting pieces are installed on the heat preservation composite board, and a metal net is laid on the outer side and firmly fixed to the connecting pieces through binding steel wires; the inner formwork and the heat preservation composite board are oppositely pulled and fixed through a plurality of sets of split bolts, a closed pouring space is formed, and the connecting piece partially extends into the space; then concrete is poured and vibrated to be compact, and maintenance is conducted till the design strength is achieved; and after the strength of the concrete meets the requirement, the inner formwork and the split bolts are removed, and bolt remaining holes are blocked. According to the method, post-cast strip structure construction and heat preservation construction can be completed synchronously, and the construction efficiency, the building thermal performance and the structure durability are improved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a construction method for integrating post-pouring strip structure and thermal insulation. Background Technology

[0002] As a key reserved area for structural expansion and settlement, the insulation treatment of post-cast strips directly affects the overall thermal performance and structural durability of buildings, making it a core control point in exterior wall insulation construction. Currently, the industry generally adopts a traditional post-construction process for the insulation treatment of post-cast strips. The core practice is to install insulation boards on the exterior wall by adhesive bonding after the main structure's post-cast strip concrete has been poured, the structural strength has met standards, and curing has been completed.

[0003] However, this method involves cumbersome procedures, a lengthy construction period, and extremely low construction efficiency. Furthermore, the subsequently applied insulation boards cannot seamlessly connect with the main exterior wall insulation layer, easily creating thermal bridges and significantly reducing the building's overall energy efficiency. Especially in northern regions with large temperature differences, the significant difference in deformation between the structure and the insulation layer can easily lead to cracking and detachment of the insulation layer, as well as quality problems such as wall leaks. In addition, the insufficient fixing strength of the subsequently pasted insulation boards poses a significant safety hazard, making it difficult to meet the current requirements for high-standard and high-efficiency engineering construction.

[0004] Therefore, there is an urgent need to provide a construction method that integrates post-pouring strip structure and thermal insulation to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a construction method for the integrated molding of post-cast strip structure and insulation, which can overcome the shortcomings of traditional post-insulation construction procedures, such as cumbersome process, easy formation of thermal bridges, easy cracking and detachment of insulation layer, and insufficient safety. It can realize the simultaneous completion of post-cast strip structure construction and insulation construction, thereby improving construction efficiency, building thermal performance and structural durability.

[0006] Based on the above concept, the technical solution adopted by this invention is as follows: A construction method for integrating post-cast strip structure and thermal insulation, comprising: S1. Remove dust and debris from the groove of the post-cast strip and the joint surface of the pre-cast concrete on both sides, roughen the joint surface of the concrete on both sides, and remove rust from the surface of the exposed steel bars in the post-cast strip area. S2. Continuously tie reinforcing bars through the post-cast strip groove to form a reinforcing bar skeleton; S3. First, install the connectors on the thermal insulation composite board, then lay the metal mesh on the outside of the thermal insulation composite board, and use binding steel wire to fix the metal mesh to the connectors securely. S4. The inner template and the insulation composite board are fixed by multiple sets of tie bolts to form a closed pouring space between the inner template and the insulation composite board, and the connectors extend into the pouring space in part. S5. Pour concrete into the pouring space, vibrate it to compact it, and then cure the concrete until it reaches the design strength. S6. After the concrete reaches the required strength, remove the inner formwork and tie bolts, and seal any remaining holes in the tie bolts.

[0007] Furthermore, in step S2, after the steel reinforcement cage is tied, spacers are installed inside the steel reinforcement cage, and the length of the spacers is the same as the thickness of the steel reinforcement cage.

[0008] Furthermore, the pads are arranged in a quincunx pattern, with an installation density of no less than 3 to 4 pads per square meter.

[0009] Furthermore, in step S2, after the steel reinforcement cage is tied, the embedded pipes at the corresponding design positions are laid out, and the embedded pipes are firmly tied to the steel reinforcement cage with binding wire.

[0010] Furthermore, in step S3, the installation density of connectors on the thermal insulation composite board is not less than 8 per square meter.

[0011] Furthermore, in step S3, before installing the connectors, the thermal insulation composite panel is manufactured using a modular design and numbered according to model and location. The thermal insulation composite panel is pre-drilled with mounting holes, through which the connectors are installed on the thermal insulation composite panel.

[0012] Furthermore, in step S3, the connector includes a limiting head and a connecting rod connected together. The limiting head presses against the metal mesh, and the connecting rod passes through the metal mesh and the thermal insulation composite board. The end of the connecting rod away from the limiting head is provided with a threaded part, which extends into the casting space in step S4.

[0013] Furthermore, in step S4, the tie bolts used include threaded rods, two limiting members, and two locking members. Before fixing the inner template and the insulation composite board, multiple vertical wooden beams and multiple sets of horizontal steel pipes are symmetrically arranged on opposite sides of the inner template and the insulation composite board. Each set of horizontal steel pipes has two pipes. Multiple tie bolts are spaced apart along the length of the two symmetrically arranged sets of horizontal steel pipes. The threaded rod passes through the middle of the two horizontal steel pipes on the same side and passes through the insulation composite board and the inner template in sequence. The two limiting members are fitted with the threaded rods from the inner and outer sides respectively and clamp and limit the two horizontal steel pipes on the corresponding sides. The two locking members are screwed to both ends of the threaded rods to lock and fix the horizontal steel pipes, vertical wooden beams, inner template, and insulation composite board. At the same time, in step S6, the vertical wooden beams and horizontal steel pipes also need to be removed.

[0014] Furthermore, in step S5, a layered continuous pouring process is adopted, with a single pouring height not exceeding 1000mm, the concrete slump controlled at 180±20mm, the upper layer of concrete being poured before the lower layer of concrete has initially set, and the interlayer interval not exceeding the initial setting time of the concrete.

[0015] Furthermore, in step S3, the thermal insulation composite board is selected from graphite polystyrene board, extruded polystyrene board or rigid polyurethane foam board, and the metal mesh is selected from galvanized steel wire mesh or welded wire mesh.

[0016] The beneficial effects of this invention are: This invention proposes a construction method for the integrated molding of post-cast strip structure and insulation. In step S3, connectors are pre-installed on the insulation composite board, and a metal mesh is laid on its outer side. The metal mesh and connectors are firmly fixed by binding wire. Then, in step S4, multiple sets of tie bolts are used to fix the inner template and the insulation composite board, forming a closed pouring space between them. At this time, the connectors partially extend into the space. In step S5, concrete is directly poured into the space, so that the insulation composite board and concrete are formed and firmly bonded in one step. Firstly, it achieves integrated structural insulation, with the insulation composite board serving as the outer formwork and being poured simultaneously with the concrete. This completely eliminates the splicing gaps caused by the secondary pasting of traditional post-installed insulation boards, thus preventing thermal bridging at its source. Secondly, this method replaces the cumbersome process of traditional "secondary construction" with "one-time molding," saving the long wait and overlapping procedures of pasting insulation boards after the post-cast concrete has cured to the required standard, shortening the construction cycle and improving construction efficiency. Thirdly, the anchoring system composed of connectors and metal mesh, combined with the reliable fixing of tie bolts, ensures that the insulation composite board and the structural wall form a stable whole. Compared with the traditional post-pasting method, its crack resistance, firmness, and overall durability are enhanced, effectively avoiding quality and safety hazards such as cracking, detachment, and leakage caused by temperature difference deformation. In addition, core components such as the insulation composite board are prefabricated in the factory and assembled on-site, which not only ensures construction accuracy but also reduces material waste, ensuring precise and controllable overall construction quality. Attached Figure Description

[0017] Figure 1 This is a flowchart of the construction method for the integrated molding of post-pouring strip structure and thermal insulation provided in the embodiments of the present invention; Figure 2 This is a schematic diagram of the installation of the post-pouring strip structure and the integrated molding of thermal insulation from a first perspective provided in the embodiments of the present invention; Figure 3 This is a schematic diagram of the installation of the post-pouring strip structure and the integrated molding of thermal insulation from a second perspective, as provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the structure of the connector connecting the metal mesh and the thermal insulation composite board provided in an embodiment of the present invention; In the picture: 1. Thermal insulation composite board; 2. Connecting component; 21. Limiting head; 22. Connecting rod; 3. Metal mesh; 4. Tie bolts; 41. Threaded rods; 42. Limiting components; 43. Locking components; 5. Inner template; 6. Concrete; 7. Vertical timber beams; 8. Horizontal steel pipes. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0019] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] See Figures 1 to 4 This invention provides a construction method for integrating post-cast strip structure and thermal insulation, comprising: S1. Remove dust and debris from the groove of the post-cast strip and the joint surface of the pre-cast concrete on both sides, roughen the joint surface of the concrete on both sides, and remove rust from the surface of the exposed steel bars in the post-cast strip area. S2. Continuously tie reinforcing bars through the post-cast strip groove to form a reinforcing bar skeleton; S3. First, install the connector 2 on the thermal insulation composite board 1, then lay the metal mesh 3 on the outside of the thermal insulation composite board 1, and use binding steel wire to fix the metal mesh 3 to the connector 2 securely. S4. The inner template 5 and the insulation composite board 1 are fixed by multiple sets of tie bolts 4, so that a closed pouring space is formed between the inner template 5 and the insulation composite board 1, and the connector 2 extends into the pouring space in a partial manner. S5. Pour concrete 6 into the pouring space, vibrate and compact it, and then cure the concrete 6 until it reaches the design strength. S6. After the concrete 6 reaches the required strength, remove the inner formwork 5 and tie bolts 4, and seal the remaining holes of tie bolts 4.

[0024] In step S3, the connector 2 is pre-installed on the thermal insulation composite board 1, and a metal mesh 3 is laid on its outer side. The metal mesh 3 is then firmly fixed to the connector 2 by binding wire. In step S4, multiple sets of tie bolts 4 are used to tie and fix the inner template 5 and the thermal insulation composite board 1, so that a closed pouring space is formed between them. At this time, the connector 2 extends partially into the space. In step S5, concrete 6 is poured directly into the space, so that the thermal insulation composite board 1 and the concrete 6 are formed and firmly bonded in one step. Firstly, it achieves integrated structural insulation. The insulation composite board 1 serves as the outer formwork and is poured simultaneously with the concrete 6, completely eliminating the splicing gaps caused by the secondary pasting of traditional post-installed insulation boards, thus preventing thermal bridging at its source. Secondly, this method replaces the cumbersome process of traditional "secondary construction" with "one-time molding," saving the long wait and process overlap required after the post-cast concrete 6 has cured to the required standard, shortening the construction cycle and improving construction efficiency. Thirdly, the anchoring system composed of connectors 2 and metal mesh 3, combined with the reliable fixing of tie bolts 4, ensures that the insulation composite board 1 and the structural wall form a stable whole. Compared with the traditional post-pasting method, its crack resistance, firmness, and overall durability are enhanced, effectively avoiding quality and safety hazards such as cracking, detachment, and leakage caused by temperature difference deformation. At the same time, the core components such as the insulation composite board 1 are prefabricated in the factory and assembled on-site, which not only ensures construction accuracy but also reduces material waste, ensuring precise and controllable overall construction quality.

[0025] Specifically, in step S2, after the reinforcing steel cage is tied, spacers are installed inside the reinforcing steel cage. The length of the spacers is the same as the thickness of the reinforcing steel cage. The placement of the spacers can precisely control the uniformity of the protective layer thickness, avoiding problems such as steel corrosion due to an excessively thin protective layer and stress concentration due to an excessively thick protective layer. Combined with the subsequent dense pouring of concrete 6, this further improves the integrity, durability, and load-bearing reliability of the post-cast strip structure, providing a stable and reliable structural foundation for the integrated molding of the thermal insulation composite panel 1 and the structure.

[0026] In this embodiment, the pad is a concrete pad.

[0027] More specifically, the installation density of the spacers should be no less than 3 to 4 pieces / ㎡. The quincunx arrangement can further improve the fluidity and filling properties of the concrete 6 during pouring, prevent the formation of pouring dead corners due to the concentrated arrangement of spacers, and ensure that the concrete 6 is dense and full; the uniform and sufficient spacer support can accurately and stably control the uniformity of the thickness of the steel reinforcement protective layer, avoiding the hidden dangers such as stress cracking and steel corrosion caused by uneven protective layer thickness.

[0028] It should be noted that the quincunx arrangement is a layout method known to those skilled in the art, which means that the pads are arranged in an alternating manner, with the pads in adjacent rows staggered and distributed in the shape of quincunx petals, rather than arranged in a straight line, so that the support points are evenly distributed in the plane.

[0029] Specifically, in step S2, after the reinforcing steel cage is tied, the embedded pipes at the corresponding design positions are laid out, and the embedded pipes are firmly tied to the reinforcing steel cage using binding wire. Precise positioning of the pipelines before concrete 6 is poured avoids damage to the post-cast strip structure and the already formed insulation composite board 1 caused by later grooving and drilling, ensuring the integrity of the structure and the insulation layer. At the same time, firm tying prevents displacement, skewness, or detachment of the embedded pipes during pouring and vibration, ensuring smooth and accurate pipeline installation, reducing rework, and improving construction efficiency and project quality.

[0030] Specifically, in step S3, the installation density of connectors 2 on the insulation composite board 1 is not less than 8 per square meter. This density of not less than 8 connectors per square meter ensures a uniform and reliable connection between the insulation composite board 1 and the metal mesh 3, preventing the metal mesh 3 from becoming loose or bulging due to missing connectors or excessive spacing. Simultaneously, the sufficient and evenly distributed connectors 2 provide adequate anchoring force between the insulation composite board 1 and the main structure after the concrete 6 is poured, effectively resisting temperature stress and wind loads, preventing cracking and detachment of the insulation layer, and further improving the overall stability and durability of the insulation system.

[0031] Furthermore, in areas of stress concentration such as door and window openings, the connectors 2 should be installed more densely.

[0032] Specifically, in step S3, before installing the connector 2, the insulation composite board 1 is manufactured using a modular design and numbered according to model and location. Furthermore, the insulation composite board 1 has pre-drilled mounting holes, through which the connector 2 is installed. The modular design and location-numbered configuration of the insulation composite board 1 allows for precise on-site alignment and rapid assembly, significantly reducing on-site cutting and errors, and improving construction efficiency and splicing flatness. The pre-drilled mounting holes ensure accurate positioning and convenient installation of the connector 2, preventing damage or cracking of the insulation composite board 1 caused by on-site drilling.

[0033] In this embodiment, 3D modeling is performed based on BIM technology to refine and optimize the layout design of the thermal insulation composite panel 1 in the post-pouring strip area, forming a standardized modular unit. The mounting holes of the connectors are prefabricated in the factory, and modular production is completed according to the optimized layout drawings to ensure accurate panel dimensions and uniform specifications. Each thermal insulation module is independently numbered according to its model and installation location to achieve on-site matching and precise installation.

[0034] Specifically, participate in Figure 2 and Figure 4 In step S3, the connector 2 includes a limiting head 21 and a connecting rod 22 connected together. The limiting head 21 presses against the metal mesh 3, and the connecting rod 22 passes through the metal mesh 3 and the insulation composite board 1. The end of the connecting rod 22 away from the limiting head 21 is provided with a threaded part, which extends into the pouring space in step S4. The connector 2 adopts an integrated structure of the limiting head 21 and the threaded connecting rod 22. The limiting head 21 can form a stable pressing and limiting on the metal mesh 3 and the insulation composite board 1. The threaded part extends into the pouring space and can form a reliable anchoring and interlocking with the post-pouring concrete 6 after pouring, improving the connection strength and integrity between the insulation composite board 1 and the main structure. At the same time, the threaded structure can further enhance the bonding force with the concrete 6, effectively preventing the insulation layer from falling off and improving the system's durability and safety.

[0035] Specifically, in step S3, the thermal insulation composite board 1 is selected from graphite polystyrene board, extruded polystyrene board, or rigid polyurethane foam board, and the metal mesh 3 is selected from galvanized steel wire mesh or welded wire mesh. Selecting graphite polystyrene board, extruded polystyrene board, or rigid polyurethane foam board as the thermal insulation composite board 1 allows for flexible adaptation to the project's energy-saving requirements and environmental conditions, ensuring excellent thermal insulation performance at the post-pouring strip and effectively suppressing thermal bridging. The metal mesh 3, made of galvanized steel wire mesh or welded wire mesh, possesses high strength and corrosion resistance, enhancing the surface layer's crack resistance and ensuring reliable connection with the connector 2, thereby improving the overall rigidity and durability of the insulation system and providing stable support for subsequent concrete 6 pouring and long-term use of the insulation layer.

[0036] Specifically, in step S4, the tie bolts 4 used include threaded rods 41, two limiting members 42, and two locking members 43. Before fixing the inner template 5 and the insulation composite board 1, multiple vertical wooden blocks 7 and multiple sets of horizontal steel pipes 8 are symmetrically arranged on opposite sides of the inner template 5 and the insulation composite board 1. Each set of horizontal steel pipes 8 has two pipes. Multiple tie bolts 4 are spaced apart along the length of the two symmetrically arranged sets of horizontal steel pipes 8. The threaded rod 41 passes through the middle of the two horizontal steel pipes 8 on the same side and passes through the insulation composite board 1 and the inner template 5 in sequence. The two limiting members 42 are respectively fitted with the threaded rod 41 from the inner and outer sides and clamp and limit the two horizontal steel pipes 8 on the corresponding sides. The two locking members 43 are respectively screwed to both ends of the threaded rod 41 to lock and fix the horizontal steel pipes 8, vertical wooden blocks 7, inner template 5 and insulation composite board 1. At the same time, in step S6, the vertical wooden blocks 7 and horizontal steel pipes 8 also need to be removed.

[0037] The support system uses vertical timber 7 and horizontal steel pipes 8 to form the main and secondary keels, and is symmetrically reinforced with special tie bolts 4 consisting of threaded rods 41, limiting parts 42, and locking parts 43. This ensures that the inner formwork 5 and the insulation composite board 1 are evenly stressed and tightly fitted, effectively guaranteeing a regular and deformation-free pouring space and ensuring accurate dimensions of the post-pouring strip structure. The threaded rods 41 pass through the middle of the two horizontal steel pipes 8 on the same side and are clamped and positioned with the limiting parts 42. This prevents the horizontal steel pipes 8 from shifting and avoids local pressure damage to the insulation composite board 1. The locking parts 43 at both ends are screwed on for easy assembly and disassembly, and are secure and reliable, allowing for repeated use. After the concrete 6 is formed, the tie bolts 4, horizontal steel pipes 8, and vertical timber 7 are removed sequentially. This ensures the integrated molding quality of the structure and insulation, reduces material waste, improves construction efficiency, and avoids damage to the insulation composite board 1 and the main structure, thus improving the overall construction economy and molding effect.

[0038] Furthermore, referring to Figure 2 The inner side of the limiting component 42 is provided with two arc-shaped grooves, and the two transverse steel pipes 8 are embedded in the arc-shaped grooves one by one, so as to realize the fitting and positioning of the transverse steel pipes 8 and the limiting component 42, effectively preventing the transverse steel pipes 8 from slipping during the pouring and vibration process, ensuring the overall stability of the support system, and thus ensuring the forming accuracy and structural dimensions of the inner template 5 and the thermal insulation composite board 1.

[0039] In this embodiment, the dimensions of the vertical timber are 40*80*3000mm, the spacing between two adjacent vertical timbers is 200mm, and the spacing between two adjacent tie bolts 4 is 500mm. In other embodiments, the above spacing parameters can be adaptively adjusted according to the width of the post-pouring strip, the lateral pressure of the concrete 6, and the stiffness of the thermal insulation composite board 1, and are not specifically limited here.

[0040] Specifically, in step S5, a layered continuous pouring process is adopted, with a single pouring height not exceeding 1000mm. The slump of concrete 6 is controlled at 180±20mm. The upper layer of concrete 6 is poured before the lower layer of concrete 6 initially sets, and the interval between layers does not exceed the initial setting time of concrete 6. Adopting a layered continuous pouring process and controlling the single pouring height to not exceed 1000mm reduces the impact of the lateral pressure of concrete 6 on the inner formwork 5 and the insulation composite board 1, avoiding deformation of the support system and displacement of the insulation board, and ensuring the precision of the integrated molding of the structure and insulation. Controlling the slump of concrete 6 at 180±20mm ensures both the fluidity and compactness of the concrete 6, while avoiding segregation, ensuring that the concrete 6 around the connector 2 and the reinforcing steel skeleton is dense and free of voids. Completing the upper layer pouring before the lower layer of concrete 6 sets ensures a tight bond between layers, eliminates construction cold joints, improves the integrity and impermeability of the post-pouring concrete 6, effectively prevents wall leakage in the later stages, and ensures continuous and uniform stress on the structure, enhancing structural durability and the adhesion reliability of the insulation system.

[0041] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A construction method for integrating post-cast strip structure and thermal insulation, characterized in that, include: S1. Remove dust and debris from the groove of the post-cast strip and the joint surface of the pre-cast concrete on both sides, roughen the joint surface of the concrete on both sides, and remove rust from the surface of the exposed steel bars in the post-cast strip area. S2. Continuously tie reinforcing bars through the post-cast strip groove to form a reinforcing bar skeleton; S3. First, install the connector (2) on the thermal insulation composite board (1), then lay the metal mesh (3) on the outside of the thermal insulation composite board (1), and use binding steel wire to fix the metal mesh (3) and the connector (2) securely. S4. The inner template (5) and the insulation composite board (1) are fixed by multiple sets of tie bolts (4), so that a closed pouring space is formed between the inner template (5) and the insulation composite board (1), and the connector (2) extends into the pouring space in part. S5. Pour concrete (6) into the pouring space, vibrate and compact it, and then cure the concrete (6) until it reaches the design strength. S6. After the concrete (6) reaches the required strength, remove the inner formwork (5) and tie bolts (4), and seal the holes left by the tie bolts (4).

2. The construction method for integrating post-cast strip structure and thermal insulation according to claim 1, characterized in that, In step S2, after the steel reinforcement cage is tied, spacers are installed inside the steel reinforcement cage. The length of the spacers is the same as the thickness of the steel reinforcement cage.

3. The construction method for integrating post-pouring strip structure and thermal insulation according to claim 2, characterized in that, The pads are arranged in a quincunx pattern, with an installation density of no less than 3 to 4 pads per square meter.

4. The construction method for integrating post-pouring strip structure and thermal insulation according to claim 1, characterized in that, In step S2, after the steel reinforcement cage is tied, the embedded pipes at the corresponding design positions are laid out, and the embedded pipes are firmly tied to the steel reinforcement cage with binding wire.

5. The construction method for integrating post-pouring strip structure and thermal insulation as described in claim 1, characterized in that, In step S3, the installation density of connectors (2) on the thermal insulation composite board (1) is not less than 8 per square meter.

6. The construction method for integrating post-cast strip structure and thermal insulation according to claim 1, characterized in that, In step S3, before installing the connector (2), the thermal insulation composite board (1) is processed using a modular design and numbered according to model and location. The thermal insulation composite board (1) is pre-drilled with mounting holes, and the connector (2) is installed on the thermal insulation composite board (1) through the mounting holes.

7. The construction method for integrating post-cast strip structure and thermal insulation according to claim 1, characterized in that, In step S3, the connector (2) includes a limiting head (21) and a connecting rod (22) connected together. The limiting head (21) presses against the metal mesh (3). The connecting rod (22) passes through the metal mesh (3) and the thermal insulation composite board (1). The end of the connecting rod (22) away from the limiting head (21) is provided with a threaded part. The threaded part extends into the casting space in step S4.

8. The construction method for integrating post-cast strip structure and thermal insulation according to claim 1, characterized in that, In step S4, the tie bolts (4) used include threaded rods (41), two limiting parts (42), and two locking parts (43); before fixing the inner template (5) and the insulation composite board (1), multiple vertical wooden blocks (7) and multiple sets of horizontal steel pipes (8) are symmetrically arranged on opposite sides of the inner template (5) and the insulation composite board (1). Each set of horizontal steel pipes (8) has two bolts. The two sets of horizontal steel pipes (8) arranged symmetrically are spaced apart along the length direction with multiple tie bolts (4). The threaded rods (41) are from the same side. Two horizontal steel pipes (8) pass through the middle, passing through the insulation composite board (1) and the inner template (5) in sequence. Two limiting parts (42) are respectively fitted with threaded rods (41) from the inner and outer sides, and clamp the two horizontal steel pipes (8) on the corresponding sides. Two locking parts (43) are respectively screwed to the two ends of the threaded rods (41) to lock and fix the horizontal steel pipes (8), vertical wooden blocks (7), inner template (5) and insulation composite board (1). At the same time, in step S6, the vertical wooden blocks (7) and horizontal steel pipes (8) also need to be removed.

9. The construction method for integrating post-cast strip structure and thermal insulation according to claim 1, characterized in that, In step S5, a layered continuous pouring process is adopted, with a single pouring height not exceeding 1000mm, and the slump of concrete (6) controlled at 180±20mm. The upper layer of concrete (6) is poured before the lower layer of concrete (6) sets, and the interlayer interval time does not exceed the initial setting time of concrete (6).

10. The construction method for integrating post-cast strip structure and thermal insulation according to any one of claims 1-9, characterized in that, In step S3, the thermal insulation composite board (1) is selected from graphite polystyrene board, extruded polystyrene board or rigid polyurethane foam board, and the metal mesh (3) is selected from galvanized steel wire mesh or welded wire mesh.

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