Cold and heat bridge prevention joint for floor system, prefabricated component and combined structure building thereof

Abstract

The embodiment of the application relates to the technical field of building engineering, in particular to a cold and heat bridge prevention node for a floor system, a prefabricated component thereof and a composite structure building, the cold and heat bridge prevention node for the floor system comprising a sandwich plate, a steel bar backing plate and steel bars; a ring-shaped sealing plate is fixedly connected between oppositely arranged first and second metal panels and forms a sealed cavity together with the first and second metal panels; a middle connecting piece is fixedly connected with the first and second metal panels; a heat insulation material is filled in the sealed cavity; the steel bar backing plate is welded on the first and second metal panels; and the steel bars are welded on the steel bar backing plate. The cold and heat bridge prevention node has the advantages of convenient construction, good heat preservation durability and cold and heat bridge prevention function.

Description

Technical Field

[0001] This application relates to the field of building engineering technology, specifically to a cold and thermal bridging joint for floor slabs and its prefabricated components and combined structural buildings. Background Technology

[0002] A thermal bridge is a region or component of an object that has a higher thermal conductivity than the surrounding material, thus forming a path of least resistance for heat transfer. The thermal bridging effect is a physical effect of heat conduction, caused by inadequate heat conduction management, resulting in a decrease in the overall thermal resistance of the object. Thermal bridges in buildings can affect the energy required to heat and cool spaces. For example, in a closed, insulated room, thermal bridges can cause up to 30% heat loss, leading to condensation inside the building's shell and causing thermal discomfort. Simply put, where the insulation layer is discontinuous, there are weak points where heat diffuses from a high temperature to a low temperature, or areas with weaker insulation in the building envelope. These areas act as bridges through which heat easily passes, called thermal bridges. Under the influence of indoor and outdoor temperature differences, areas with dense heat transfer and lower inner surface temperatures form thermal bridges.

[0003] Thermal bridging typically occurs when there are cracks or penetrations in the building envelope (such as insulation). This can occur in structures containing metal or reinforced concrete beams (e.g., ring beams, lintels, steel frame beams), columns, balconies, sunshades, projecting moldings, and edge or ribs in reinforced concrete or metal roof panels, metal frames and framing in metal-panel glass curtain walls and windows, as well as gaps created during insulation construction and excessive metal components. Thermal bridging can be a major source of energy loss in homes and buildings, leading to higher utility bills. Because heat always flows towards cold, in summer, sweltering heat from outside penetrates the steel reinforcement and enters your air-conditioned room; in winter, heat used to heat the room leaks out to the cold outdoors.

[0004] In modern building design, energy efficiency is becoming increasingly important, and the thermal performance of insulated building envelopes is a key design consideration. Balconies, air conditioning slabs, and other cantilevered structural elements, which require penetration of the building envelope to ensure structural continuity, are weak points in building insulation. Traditional external insulation methods suffer from drawbacks such as large on-site workload and poor insulation durability. Therefore, developing a floor joint that simultaneously facilitates construction and prevents thermal bridging is crucial for improving the overall energy efficiency of a building. Summary of the Invention

[0005] This application provides a floor slab anti-cold and thermal bridge node, its prefabricated components, and a combined structural building. The anti-cold and thermal bridge node is easy to construct, has good thermal insulation and durability, and has the function of preventing cold and thermal bridges.

[0006] According to a first aspect of the embodiments of this application, a thermal bridging node for a floor slab is provided. In a horizontal projection plane, the floor slab includes an indoor floor slab and an outdoor cantilever slab; the floor slab and the cantilever slab are connected by the thermal bridging node.

[0007] The floor slab anti-cold and thermal bridging joint includes a sandwich panel, a steel reinforcement pad, and steel reinforcement;

[0008] The sandwich panel includes a first metal panel, a second metal panel, multiple intermediate connectors, an annular sealing plate, and thermal insulation material. The annular sealing plate is fixedly connected between the opposing first and second metal panels, and forms a sealed cavity around the first and second metal panels. One end of each intermediate connector is fixedly connected to the first metal panel, and the other end is fixedly connected to the second metal panel, and is disposed within the sealed cavity. The thermal insulation material fills the sealed cavity.

[0009] The reinforcing steel plate is welded to both the surface of the first metal panel facing away from the second metal panel and the surface of the second metal panel facing away from the first metal panel.

[0010] Multiple reinforcing bars extending outward are welded onto the reinforcing bar base plate.

[0011] Preferably, the intermediate connector is a connecting pipe, a connecting rod, a honeycomb plate, or a corrugated plate;

[0012] When the intermediate connector is a connecting pipe, the connecting pipe is filled with heat insulation material.

[0013] Among them, the cantilever slab can be a cantilevered balcony, a cantilevered air conditioning slab, a rain shelter, or other components.

[0014] Preferably, the intermediate connector and the annular sealing plate are made of stainless steel, fiber-reinforced composite material or plastic.

[0015] Preferably, the thermal insulation material is rock wool or polyurethane foam.

[0016] Preferably, the first metal panel is a carbon structural steel plate, a low-alloy high-strength structural steel plate, or a stainless steel plate.

[0017] The second metal panel is a carbon structural steel plate, a low-alloy high-strength structural steel plate, or a stainless steel plate.

[0018] Preferably, a plurality of the steel reinforcement matrices are distributed on the steel reinforcement pad;

[0019] The reinforcing steel spacers on both sides of the sandwich panel are symmetrically arranged along the sandwich panel;

[0020] The reinforcing bars on both sides of the sandwich panel are symmetrically arranged along the sandwich panel.

[0021] Preferably, the annular sealing plate includes a bottom sealing plate, a first side sealing plate, a top sealing plate, and a second side sealing plate that are connected end to end along the circumference; the bottom sealing plate and the top sealing plate are arranged opposite to each other; the first side sealing plate and the second side sealing plate are arranged opposite to each other;

[0022] The reinforcing bars are threaded steel bars.

[0023] According to a second aspect of the embodiments of this application, a prefabricated component for floor slabs is also provided, the prefabricated component comprising a reinforced concrete structure and any one of the cold and thermal bridging joints for floor slabs provided by the above technical solutions;

[0024] The reinforced concrete structure is cast on the side of the first metal panel away from the second metal panel or on the side of the second metal panel away from the first metal panel, and is fixedly connected to the first metal panel or the second metal panel as an integral structure.

[0025] The steel reinforcement cage in the reinforced concrete structure is fixedly connected to the steel reinforcement at the corresponding end of the anti-cold and thermal bridging node of the floor slab.

[0026] Furthermore, according to a third aspect of the embodiments of this application, a method for preparing the above-mentioned prefabricated components for floor slabs is also provided, the method comprising the following steps:

[0027] The first metal panel, the second metal panel, multiple intermediate connectors and the annular sealing plate are fixedly connected together, and process holes are reserved on the annular sealing plate.

[0028] Steel reinforcement plates are welded onto the first metal panel and the second metal panel respectively;

[0029] Reinforcing bars are welded onto each reinforcing bar base plate;

[0030] Place the reinforcing bars located on one side of the first or second metal panel into the formwork;

[0031] Reinforcing bars are tied to the reinforcing bars inside the template to form a reinforcing bar skeleton;

[0032] Pour concrete into the formwork;

[0033] Insulating material is filled into the sealed cavity through the process hole and then compressed to make it dense;

[0034] The process holes are sealed to form a prefabricated component with anti-cold and thermal bridge nodes for floor slabs.

[0035] Preferably, after sealing the process hole, the method further includes:

[0036] Apply rust prevention treatment to the reinforcing bars on the other side;

[0037] Precast components are cured and marked.

[0038] The use of the precast floor components, their anti-cold-and-thermal-bridge joints, and the preparation method provided in the embodiments of this application has the following beneficial effects:

[0039] The aforementioned thermal bridging joint for floor slabs is made of sandwich panels, steel reinforcement pads, and steel bars. The thermal bridging joint, prefabricated components, and floor slabs can all be prefabricated in the factory, requiring only assembly construction on site, thus featuring simple construction and minimal on-site workload. Rock wool, polyurethane foam, and other thermal insulation materials are filled in the sandwich panels. At the same time, the thermal insulation material is embedded in the sealed cavity of the sandwich panels to prevent the formation of thermal bridges, resulting in good insulation performance, good durability of the thermal insulation material, and no risk of falling off. The steel bars are welded to the metal panels through steel reinforcement pads, and multiple intermediate connectors are fixed between the metal panels, thus making the thermal bridging joint structurally strong and having good load-bearing performance.

[0040] Therefore, the above-mentioned anti-cold and thermal bridge joints for floor slabs have the characteristics of small on-site workload, convenient construction and good thermal insulation and durability. They can be widely used in components such as cantilevered balconies and cantilevered air conditioning slabs to replace traditional building external insulation methods and have good application prospects in civil buildings.

[0041] In addition, according to a fourth aspect of the embodiments of this application, the present invention also discloses a combined structural building with the above-mentioned anti-cold and thermal bridge nodes for floor slabs, including: beams, columns, shear walls and floor slabs;

[0042] The column is composed of a composite component with a web encased in concrete.

[0043] The web-encased concrete composite member includes: a T-shaped steel-reinforced truss composite hollow member, a steel reinforcement cage, tie bars, and concrete;

[0044] The T-shaped steel-reinforced truss composite hollow component includes: a first T-shaped steel, a second T-shaped steel, an M-shaped steel bar (or corrugated steel bar), and a stiffening steel plate;

[0045] The first T-shaped steel includes a first flange and a first web;

[0046] The second T-shaped steel includes a second flange and a second web;

[0047] The first T-shaped steel and the second T-shaped steel are opposite to each other and spaced apart, and are arranged in an I-shape as a whole;

[0048] In the length direction, the T-shaped steel-reinforced truss composite hollow component includes connection areas at both ends and a prefabricated area in the middle;

[0049] The stiffening steel plate is vertically disposed at the junction of the connection area of ​​the first T-beam and the second T-beam and the prefabrication area;

[0050] The stiffening steel plate is fixedly connected to the first T-shaped steel and the second T-shaped steel and encloses a prefabricated abdominal cavity in the prefabricated area; the prefabricated abdominal cavity includes a left prefabricated abdominal cavity and a right prefabricated abdominal cavity;

[0051] The M-shaped steel bar is set in the prefabrication area. The M-shaped steel bar moves back and forth between the first web and the second web in a wave-like pattern. The first web and the second web of the M-shaped steel bar are welded together to form a whole.

[0052] The precast abdominal cavity is filled with concrete, and the steel reinforcement skeleton is embedded in the concrete.

[0053] The steel reinforcement cage includes main reinforcing bars, and the two ends of the main reinforcing bars are fixedly connected to the stiffening steel plate.

[0054] The steel reinforcement cage includes a left steel reinforcement cage disposed in the left prefabricated abdominal cavity and a right steel reinforcement cage disposed in the right prefabricated abdominal cavity.

[0055] The tie bars pass through the gaps in the M-shaped steel bars, fixing the left and right steel bar skeletons together.

[0056] Furthermore, the stiffening steel plate is provided with reinforcing bar holes, and the two ends of the main reinforcing bar are provided with threaded sections. After the threaded sections pass through the reinforcing bar holes, they are fixedly connected to the stiffening steel plate by nuts.

[0057] The nut is threaded to the end of the main reinforcing bar. The main reinforcing bar is fixed by tightening the nut, and the force borne by the main reinforcing bar is transferred to the stiffening steel plate, the first T-section steel and the second T-section steel to achieve continuous force transmission.

[0058] Furthermore, the steel reinforcement cage also includes: reinforcing bars and stirrups.

[0059] Furthermore, the M-shaped steel bar is formed by bending plain round steel bars or threaded steel bars.

[0060] Furthermore, the number of the M-shaped steel bars is two sets, and the two sets of M-shaped steel bars are respectively attached to the left and right sides of the first web and the second web.

[0061] Furthermore, the tie bars are fixedly connected to the left and right steel reinforcement cages by binding.

[0062] Furthermore, the stiffening steel plate includes a left stiffening portion and a right stiffening portion;

[0063] The left stiffening part is fixedly connected to the first flange, the first web, the second flange and the second web, and encloses the left prefabricated abdominal cavity on the left side of the prefabricated area;

[0064] The right stiffening part is fixedly connected to the first flange, the first web, the second flange and the second web, and encloses the right prefabricated abdominal cavity on the right side of the prefabricated area.

[0065] The length of the connection area is the length of the plastic hinge zone of the steel beam or column under seismic action, which is specified by the design and can realize seismic energy dissipation by pure steel components in the connection area under seismic action; the M-shaped steel bar is interrupted outside the connection area; the stiffening steel plate is provided on both sides of the prefabricated area.

[0066] Furthermore, it also includes a repair welded steel plate disposed in the connection area; the two ends of the repair welded steel plate are respectively welded and fixed to the first web plate and the second web plate; the repair welded steel plate is provided with a plurality of connection holes.

[0067] The first and second T-shaped steels are provided with connection holes at both ends and in the connection area. By welding the steel plate and adding connection holes on the welded steel plate, the connection stiffness and strength of the web-encased concrete composite member and other connecting members are improved.

[0068] Furthermore, in the web-encased concrete composite member, the flanges of the first T-shaped steel and the second T-shaped steel on the outdoor side are the outer flanges, and the flanges of the second T-shaped steel and the first T-shaped steel on the indoor side are the inner flanges; the outer end face of the outer flange is coated with an external anti-corrosion layer.

[0069] Furthermore, several layers of glass wool boards are laid on the outer side of the outer anti-corrosion layer of the outer flange to block the heat flow between the indoor and outdoor sides of the wall as a thermal bridge of the concrete composite component encased in the web.

[0070] While effectively eliminating the thermal bridge effect at the concrete composite member of the web and improving the overall thermal insulation performance of the building, several layers of glass wool board can effectively reduce the impact of external temperature changes on the external anti-corrosion layer and extend the effective anti-corrosion period of the external anti-corrosion layer.

[0071] Furthermore, the outer end face of the inner flange is coated with an inner anti-corrosion layer; and no thermal insulation material is laid on the outer side of the inner anti-corrosion layer of the inner flange.

[0072] Since the indoor temperature and humidity are relatively stable with little change, the internal anti-corrosion layer can remain effective for a long time. By utilizing the thermal bridging effect of the concrete composite component encased in the web, and combined with the blocking of thermal bridges by the glass wool board on the outer flange, the temperature fluctuation at the outer anti-corrosion layer of the outer flange is greatly reduced, thus more effectively extending the effective life of the outer anti-corrosion layer. This improves the overall anti-corrosion performance of the concrete composite component encased in the web.

[0073] Furthermore, the shear wall includes a wall body and wall connectors disposed within the wall body; the wall body includes inner side plates and outer side plates spaced apart along its thickness direction;

[0074] The wall connector has multiple through holes along the thickness direction of the wall; both ends of the wall connector are fixedly connected to the inner side plate and the outer side plate, respectively; and the wall connector is made of fiber-reinforced composite material, and the wall is filled with thermal insulation material.

[0075] This invention relates to a composite structural building system that incorporates wall connectors within the shear wall. These connectors feature through holes, which, while maintaining the buckling resistance function of the shear wall, reduce its weight, facilitating on-site rotation, handling, and hoisting. Furthermore, the shear wall exhibits rational stress distribution and reliable performance, can be factory-fabricated for ease of fabrication, and eliminates the need for on-site bonding, reducing on-site workload and improving connection efficiency. Additionally, the wall connectors are made of fiber-reinforced composite material, and the wall is filled with thermal insulation material, further enhancing the thermal insulation performance of the wall and the entire building.

[0076] Furthermore, the wall connector is a plurality of spaced-apart connecting pipes, or a connecting plate with a honeycomb cross-section.

[0077] Furthermore, the end of the wall connector is connected to the inner side plate and the outer side plate via connecting feet, which increase the connection area between the wall connector and the inner side plate and the outer side plate. The wall connector is bonded to the connecting feet using resin.

[0078] Furthermore, the connecting pipe is connected to the inner side plate or the outer side plate by a reinforcing member, the reinforcing member including an L-shaped cylindrical body and a connecting ring; the inner edge of the connecting ring is connected to the outer edge of the cylindrical body; the cylindrical body is fitted inside the connecting pipe, the connecting ring extends out of the connecting pipe and is fixed to the end face of the connecting pipe; the connecting ring is provided with an adhesive part that is bonded to the inner wall of the inner side plate or the outer side plate.

[0079] This significantly improves the connection strength between the connecting pipe and the inner or outer side plate. Simultaneously, the connecting sleeve restricts the buckling of the connecting pipe, thereby enhancing its buckling resistance. The bonding section ensures that the connection position between the connecting ring and the wall is always in the preset position, allowing the installer to bond according to the bonding section's location, thus ensuring accurate bonding.

[0080] Furthermore, it also includes a constraint support member; the two ends of the constraint support member are fixedly connected to the middle part of the column and the middle part of the beam, respectively.

[0081] The constraint support includes an outer constraint sleeve and an inner core, a constraint ring, and a constraint rod, all of which are disposed within the outer constraint sleeve.

[0082] Both the constraint rod and the inner core are arranged along the length direction of the outer constraint sleeve. The constraint ring is fixed to the outer constraint sleeve and is sleeved on the inner core and the constraint rod to fix the inner core and the constraint rod.

[0083] Furthermore, the inner core is a long strip; the constraint rods are provided on both sides of the inner core; or, the inner core is a long strip with a cross-shaped cross section, and the constraint rods are provided at the four intervals of the cross shape.

[0084] Furthermore, the constraint ring includes a plurality of annular constraint steel bars that are sleeved on the inner core and the constraint rod; the plurality of annular constraint steel bars are arranged at intervals along the length direction of the constraint rod.

[0085] Furthermore, the constraint ring is a ring-shaped constraint steel bar spirally wound around the outer side of the inner core. Preferably, the ring-shaped constraint steel bar is a plain round steel bar.

[0086] Furthermore, the constraint rod is a steel bar; the steel bar is welded and fixed to the plain round steel bar.

[0087] Furthermore, an anti-friction layer is provided between the constraint rod and the inner core to reduce the frictional resistance between the constraint rod and the inner core.

[0088] Furthermore, the outer constraint sleeve is made of mortar, and a reinforcing structure is provided inside the outer constraint sleeve; the reinforcing structure is a wire mesh or a fiberglass mesh; the wire mesh or the fiberglass mesh is arranged along the circumference of the outer constraint sleeve.

[0089] Furthermore, the inner core has connecting ends extending out of the outer constraint sleeve at both ends; the width of the connecting end is greater than the width of the inner core inside the outer constraint sleeve (the middle width of the inner core); the connecting end has mounting holes. The constraint support is connected to the crossbeam and the column respectively through the mounting holes on the connecting end.

[0090] The buckling restraint brace of this invention uses restraint rods and restraint rings to constrain the buckling of the inner core, limiting local buckling and thus fully utilizing the core plate's performance. Furthermore, during manufacturing, only the restraint ring needs to be fitted over the inner core and restraint rod for fixation, requiring minimal intervention and eliminating the need for specialized factory processing. Therefore, manufacturing is simple and easy. The restraint rods are made of steel bars, the inner core is made of steel, and the restraint rings are made of plain round steel bars—all commonly used materials, resulting in low cost and good economic efficiency. The outer restraint sleeve is made of mortar, preventing corrosion of the buckling restraint brace and eliminating the need for maintenance during its service life. Attached Figure Description

[0091] Figure 1 This is a structural schematic diagram of a floor slab anti-cold and thermal bridge node provided in the embodiment;

[0092] Figure 2 for Figure 1 The provided section shows a cross-sectional view of section AA of the floor slab anti-cold bridging joint.

[0093] Figure 3 A structural schematic diagram of a prefabricated component for a floor slab with anti-cold and thermal bridge joints;

[0094] Figure 4 for Figure 3 Schematic diagram of the usage status of prefabricated components for the central floor slab;

[0095] Figure 5 Provided for the embodiments Figure 3 Flowchart of the preparation method for prefabricated components;

[0096] Figure 6 This is a structural schematic diagram of the composite member with the web plate encased in concrete in Embodiment 4 of the present invention;

[0097] Figure 7 for Figure 6 The side view of the T-shaped steel-reinforced truss composite hollow component shown;

[0098] Figure 8 for Figure 6 The front view of the T-shaped steel-reinforced truss composite hollow component shown;

[0099] Figure 9 for Figure 7 Enlarged view at point A in the middle;

[0100] Figure 10 for Figure 6 A cross-sectional view;

[0101] Figure 11 This is a diagram of the thermal break insulation structure on the outside of the combined component in Example 5;

[0102] Figure 12 This is a structural schematic diagram of the shear wall in Example 6;

[0103] Figure 13 This is a schematic diagram of the arrangement of the constraint support members in Example 7;

[0104] Figure 14 for Figure 13 AA section view in the middle;

[0105] Figure 15 This is a side view of the cross-shaped inner core;

[0106] Figure 16 for Figure 14 FF section view in the image. Detailed Implementation

[0107] The present invention will be further explained below with reference to specific embodiments.

[0108] Example 1

[0109] This application provides a cold and thermal bridging joint for floor slabs, referring to... Figure 4 As shown, in the horizontal projection plane, the building floor includes an indoor floor slab 2a and an outdoor cantilever slab 2b; the floor slab 2a and the cantilever slab 2b are connected by a thermal bridging node 1.

[0110] refer to Figure 1 and Figure 2 As shown, the floor slab's anti-cold and thermal bridging node 1 includes a sandwich slab 11, a reinforcing steel pad 12, and reinforcing steel bars 13; as Figure 1 As shown in the structure, the middle of the anti-cold and thermal bridge node 1 is a sandwich plate 11, and steel reinforcement plates 12 are fixedly connected to both sides of the sandwich plate 11. Multiple steel bars 13 are fixedly connected to the steel reinforcement plates 12.

[0111] Figure 1 and Figure 2The specific structure of the sandwich panel 11 is shown. The sandwich panel 11 includes a first metal panel 111, a second metal panel 112, multiple intermediate connectors 113, an annular sealing plate 114, and thermal insulation material 115. The first metal panel 111 can be a carbon structural steel plate, a low-alloy high-strength structural steel plate, or a stainless steel plate, etc.; the second metal panel 112 can also be a carbon structural steel plate, a low-alloy high-strength structural steel plate, or a stainless steel plate, etc. Both the intermediate connector 113 and the annular sealing plate 114 can be made of stainless steel, fiber-reinforced composite material, or plastic. When both the intermediate connector 113 and the annular sealing plate 114 are made of stainless steel, the intermediate connector 113, the annular sealing plate 114, the first metal panel 111, and the second metal panel 112 can be welded together to form an integral structure. When both the intermediate connector 113 and the annular sealing plate 114 are made of fiber-reinforced composite material or plastic, the intermediate connector 113, the annular sealing plate 114, the first metal panel 111, and the second metal panel 112 can be bonded or hot-melted together to form an integral structure.

[0112] like Figure 1 As shown in the structure, the first metal panel 111 and the second metal panel 112 are arranged opposite to each other; an annular sealing plate 114 is fixedly connected between the oppositely arranged first metal panel 111 and second metal panel 112, so that the annular sealing plate 114, the first metal panel 111 and the second metal panel 112 form an integral structure, and the annular sealing plate 114, the first metal panel 111 and the second metal panel 112 surround to form a sealed cavity; one end of the intermediate connecting member 113 is fixedly connected to the first metal panel 111 and the other end is fixedly connected to the second metal panel 112, and is disposed in the sealed cavity; while the annular sealing plate 114 connects the first metal panel 111 and the second metal panel 112, a plurality of intermediate connecting members 113 are also fixedly connected between the first metal panel 111 and the second metal panel 112 to improve the connection strength between the first metal panel 111 and the second metal panel 112; heat insulation material 115 is filled in the sealed cavity; in this embodiment, the heat insulation material 115 can be rock wool or foamed polyurethane, or other materials with heat insulation function.

[0113] Steel reinforcement plates 12 are welded to both the surface of the first metal panel 111 facing away from the second metal panel 112 and the surface of the second metal panel 112 facing away from the first metal panel 111; for example Figure 1As shown in the structure, a reinforcing steel plate 12 is welded to the surface of the first metal panel 111 facing away from the second metal panel 112, that is, a reinforcing steel plate 12 is welded to the outer surface of the first metal panel 111. Similarly, a reinforcing steel plate 12 is also welded to the surface of the second metal panel 112 facing away from the first metal panel 111, that is, a reinforcing steel plate 12 is welded to the outer surface of the second metal panel 112. The reinforcing steel plate 12 can be an integral structure or a split structure; that is, the reinforcing steel plate 12 can be composed of a single sheet of material or a combination of different materials. Figure 1 The structure consists of multiple plates; multiple reinforcing bars 13 extending outward are welded onto the reinforcing bar plate 12. The reinforcing bars 13 can be threaded reinforcing bars 13.

[0114] The aforementioned thermal bridging joint 1 for the floor slab is made of a sandwich panel 11, a steel reinforcement plate 12, and steel reinforcement 13. The thermal bridging joint 1, prefabricated components, and floor slabs can all be prefabricated in the factory, requiring only assembly construction on site, thus featuring simple construction and minimal on-site workload. The sandwich panel 11 is filled with thermal insulation materials 115 such as rock wool and polyurethane foam. At the same time, the thermal insulation material 115 is embedded in the sealed cavity of the sandwich panel 11 to prevent the sandwich panel 11 from forming thermal bridges, resulting in good thermal insulation effect, good durability of the thermal insulation material 115, and no risk of falling off. The steel reinforcement 13 is welded to the metal panel through the steel reinforcement plate 12, and multiple intermediate connectors 113 are fixed between the metal panels, thus making the thermal bridging joint 1 structurally strong and having good stress performance.

[0115] Therefore, the above-mentioned anti-cold and thermal bridge node 1 for floor slabs has the characteristics of small on-site workload, convenient construction and good thermal insulation and durability. It can be widely used in components such as cantilevered balconies and cantilevered air conditioning panels to replace traditional building external insulation methods and has good application prospects in civil buildings.

[0116] In one specific implementation, such as Figure 1 and Figure 2 As shown in the structure, the intermediate connector 113, which is fixedly connected between the first metal panel 111 and the second metal panel 112, can be a connecting pipe, a connecting rod, a honeycomb plate, or a corrugated plate; when the intermediate connector 113 is a connecting pipe, the connecting pipe is filled with heat insulation material 115.

[0117] The first metal panel 111 and the second metal panel 112 are fixedly connected by the intermediate connector 113, which helps to improve the structural strength of the sandwich panel 11. When the intermediate connector 113 is a component with a hollow structure such as a connecting pipe, the cavity of the intermediate connector 113 is filled with heat insulation material 115. The heat insulation material 115 can further improve the heat insulation and heat preservation performance of the sandwich panel 11, and can avoid the sandwich panel 11 from acting as a thermal bridge as much as possible.

[0118] like Figure 2 As shown in the structure, multiple reinforcing bars 13 are distributed in a matrix on the reinforcing bar pad 12; the reinforcing bars 13 are evenly distributed among each other, and the size, material and distribution density of the reinforcing bars 13 can be set according to actual needs; the reinforcing bar pads 12 on both sides of the sandwich plate 11 are symmetrically arranged along the sandwich plate 11; the reinforcing bars 13 on both sides of the sandwich plate 11 are symmetrically arranged along the sandwich plate 11.

[0119] Since the sandwich panel 11 has symmetrical steel reinforcement plates 12 and steel bars 13 on both sides, it can be used as an intermediate connecting structure to connect the floor slabs, balconies and other building structures at both ends in actual use.

[0120] To facilitate the filling of insulation material 115, such as Figure 2 As shown in the structure, the annular sealing plate 114 can be a split structure, that is, it includes a bottom sealing plate 1141, a first side sealing plate 1142, a top sealing plate 1143, and a second side sealing plate 1144 connected end to end along the circumference; the bottom sealing plate 1141 and the top sealing plate 1143 are arranged opposite to each other; the first side sealing plate 1142 and the second side sealing plate 1144 are arranged opposite to each other. Of course, the annular sealing plate 114 can also be a single structure. In order to facilitate the filling of the heat insulation material 115, process holes can be set during the manufacturing process.

[0121] Example 2

[0122] This application also provides a prefabricated component for floor slabs, such as... Figure 3 As shown in the structure, the precast component includes a reinforced concrete structure 2 (including an indoor floor slab 2a and an outdoor cantilever slab 2b) and any of the floor slab anti-cold and thermal bridge nodes 1 provided in the above embodiments; the reinforced concrete structure 2 is cast on the side surface of the first metal panel 111 facing away from the second metal panel 112 or on the side surface of the second metal panel 112 facing away from the first metal panel 111, and is fixedly connected to the first metal panel 111 or the second metal panel 112 as an integral structure; that is, a reinforced concrete structure 2 is provided at one end of the anti-cold and thermal bridge node 1, or a reinforced concrete structure 2 can be provided at both ends of the anti-cold and thermal bridge node 1, such as Figure 4 The precast components shown in the structure; the steel reinforcement skeleton 21 in the reinforced concrete structure 2 is fixedly connected to the steel reinforcement 13 at the corresponding end of the anti-cold and heat bridge node 1 of the floor slab. For example, the steel reinforcement 13 can be lapped and tied at the outer end of the steel reinforcement 13 to form the steel reinforcement skeleton 21.

[0123] The aforementioned prefabricated floor slab components can be prefabricated before use and directly transported to the construction site for assembly and use. They can be used as components such as cantilevered balconies and cantilevered air conditioning slabs. Therefore, the prefabricated floor slab components with the above structure have the characteristics of simple construction and small on-site workload, which is conducive to shortening the construction period and improving construction efficiency.

[0124] Example 3

[0125] This application also provides a method for preparing the above-mentioned precast components for floor slabs, the method comprising the following steps:

[0126] Step S100: The first metal panel 111, the second metal panel 112, multiple intermediate connectors 113, and the annular sealing plate 114 are fixedly connected together, and process holes are pre-drilled in the annular sealing plate 114. The first metal panel 111, the second metal panel 112, the multiple intermediate connectors 113, and the annular sealing plate 114 can all be made of steel plates and welded together to form an integral structure. When the annular sealing plate 114 is an integral structure, the process holes can be openings provided on the annular sealing plate 114. When the annular sealing plate 114 is a split structure, such as... Figure 2 When the structure shown consists of a bottom sealing plate 1141, a top sealing plate 1143, a first side sealing plate 1142, and a second side sealing plate 1144, the process hole can also be formed by the top sealing plate 1143. That is, only the bottom sealing plate 1141, the first side sealing plate 1142, and the second side sealing plate 1144 are welded between the first metal panel 111 and the second metal panel 112, and the top sealing plate 1143 is welded and fixed after the heat insulation material 115 is filled.

[0127] In step S200, reinforcing steel plates 12 are welded onto the first metal panel 111 and the second metal panel 112 respectively; similarly, the reinforcing steel plate 12 can be an integral structure formed from a single steel plate, or it can be... Figure 1 The structure shown is a composite structure formed by multiple steel plates.

[0128] In step S300, a reinforcing bar 13 is welded onto each reinforcing bar spacer 12; the reinforcing bar 13 can be a threaded reinforcing bar; the length of the reinforcing bar 13 needs to meet the anchorage length requirement of the reinforcing bar 13.

[0129] Step S400: Place the reinforcing bar 13 located on one side of the first metal panel 111 or the second metal panel 112 into the template; by surrounding the template to form a cavity for pouring concrete, place the reinforcing bar 13 at the end of the pre-formed reinforced concrete structure 2 into the cavity formed by the template, so as to form the anti-cold and thermal bridge node 1 and the reinforced concrete structure 2 into one piece by the reinforcing bar 13.

[0130] Step S500: Tie the reinforcing bars 13 to the reinforcing bars 13 in the formwork to form a reinforcing cage 21. In order to improve the structural strength of reinforced concrete, multiple reinforcing bars 13 can be tied in a crisscross pattern to the reinforcing bars 13 in the formwork to form a reinforcing cage 21 of the reinforced concrete structure 2, so as to meet the strength requirements of the building components.

[0131] Step S600: Pour concrete into the template; the poured concrete solidifies the steel reinforcement cage 21 and the anti-cold and thermal bridge node 1 into an integrated structure.

[0132] In step S700, thermal insulation material 115 is filled into the sealed cavity through the process hole and compacted.

[0133] Step S800: Seal the process hole to form a prefabricated component with a cold and heat bridge prevention node 1 for floor slab; when the process hole is an opening set on the annular sealing plate 114, the process hole is sealed by welding the sealing plate; when the process hole is the top sealing plate 1143, the top sealing plate 1143 is welded.

[0134] Through the above steps, the prefabricated components for the floor slab can be prepared. Since the insulation material 115 is filled after the anti-cold and thermal bridge node 1 is made, it is beneficial to eliminate the adverse effects of welding and other processes on the insulation material 115 during the preparation process, so as to prevent the insulation effect of the insulation material 115 from decreasing, thereby ensuring the thermal insulation durability of the anti-cold and thermal bridge node 1 and the prefabricated components with the anti-cold and thermal bridge node 1.

[0135] In the above preparation method, after sealing the process orifice, the following steps may also be included:

[0136] Rust prevention treatment was applied to the reinforcing bar 13 on the other side; the precast components were cured and marked.

[0137] By treating the other side of the reinforcing bar 13 with rust prevention, the reinforcing bar 13 can be prevented from rusting, thereby ensuring the structural strength and service life of the precast components and preventing waste such as scrap due to corrosion of the reinforcing bar 13. The maintenance and marking of the precast components are beneficial to the prefabrication and storage of the precast components, making it convenient for workers to classify and use them according to the markings, improving the safety and reliability of the construction project, and improving construction efficiency.

[0138] Example 4

[0139] This embodiment discloses a composite structural building, including: beams, columns, shear walls, and floor slabs; wherein the floor slabs have anti-cold and thermal bridging nodes as described in Embodiments 1, 2, or 3. The columns are composed of composite members with webs encased in concrete.

[0140] like Figure 6 As shown in the figure, this embodiment provides a composite member with a web encased in concrete, comprising: a T-shaped steel-reinforced truss composite hollow member Y100, a steel reinforcement cage 200, tie bars, and concrete 300. The T-shaped steel-reinforced truss composite hollow member Y100 can be used as a beam or column.

[0141] The T-shaped steel-reinforced truss composite hollow component Y100 includes: a first T-shaped steel Y110, a second T-shaped steel Y120, an M-shaped steel bar Y130 (or corrugated steel bar), and a stiffening steel plate Y150.

[0142] like Figure 7 As shown, the first T-shaped steel Y110 includes a first flange Y111 and a first web Y112; the second T-shaped steel Y120 includes a second flange Y121 and a second web Y122; the first T-shaped steel Y110 and the second T-shaped steel Y120 are opposite to each other and spaced apart, and are arranged in an I-shape.

[0143] like Figure 6 As shown, in the length direction, the T-shaped steel-reinforced truss composite hollow member Y100 includes connection areas Y101 at both ends and a prefabricated area Y102 in the middle.

[0144] The stiffening steel plate Y150 is vertically arranged at the junction of the connection area Y101 of the first T-shaped steel Y110 and the second T-shaped steel Y120 and the prefabrication area Y102.

[0145] The stiffening steel plate Y150 is fixedly connected to the first T-shaped steel Y110 and the second T-shaped steel Y120 and encloses a prefabricated abdominal cavity in the prefabrication area; the prefabricated abdominal cavity includes a left prefabricated abdominal cavity Y100a and a right prefabricated abdominal cavity Y100b.

[0146] The M-shaped steel bar Y130 is set within the prefabrication area Y102, such as... Figure 6 and 10 As shown, the M-shaped steel bar Y130 moves back and forth in a wave-like pattern between the first web Y112 and the second web Y122. The M-shaped steel bar Y130, the first web Y112 and the second web Y122 are welded together to form a whole.

[0147] The left prefabricated abdominal cavity Y100a and the right prefabricated abdominal cavity Y100b are filled with concrete 300, and a steel reinforcement skeleton 200 is embedded in the concrete 300.

[0148] The reinforcing steel cage 200 includes main reinforcing bars 210, and the two ends of the main reinforcing bars 210 are fixedly connected to the stiffening steel plate Y150 respectively. Specifically, the stiffening steel plate Y150 is provided with reinforcing bar holes, and the two ends of the main reinforcing bars 210 are provided with threaded sections. After the threaded sections pass through the reinforcing bar holes, they are fixedly connected to the stiffening steel plate Y150 by nuts 151.

[0149] Nut 151 is threaded to the end of the main reinforcing bar 210. The main reinforcing bar 210 is fixed by tightening the nut, and the force borne by the main reinforcing bar 210 is transmitted to the stiffening steel plate Y150, the first T-shaped steel Y110 and the second T-shaped steel Y120 to achieve continuous force transmission.

[0150] like Figure 10As shown, the steel reinforcement cage 200 includes a left steel reinforcement cage 200a disposed in the left precast abdominal cavity and a right steel reinforcement cage 200b disposed in the right precast abdominal cavity; the tie steel bar 400 passes through the gap of the M-shaped steel bar Y130 and fixes the left steel reinforcement cage 200a and the right steel reinforcement cage 200b.

[0151] In addition, the steel reinforcement cage 200 also includes: upright steel bars 220 and stirrups 230. The two ends of the tie steel bars 400 are connected to the upright steel bars 220 by tying.

[0152] Among them, the M-shaped steel bar Y130 is formed by bending plain round steel bars or threaded steel bars. For example... Figure 4 As shown, there are two sets of M-shaped steel bars Y130, which are respectively attached to the left and right sides of the first web Y112 and the second web Y122.

[0153] Among them, the first T-shaped steel Y110 and the second T-shaped steel Y120 are hot-rolled split T-shaped steel or welded T-shaped steel.

[0154] In this embodiment, the stiffening steel plate Y150 includes a left stiffening part and a right stiffening part; the left stiffening part is fixedly connected to the first flange Y111, the first web Y112, the second flange Y121 and the second web Y122 and encloses the left prefabricated abdominal cavity on the left side of the prefabricated area; the right stiffening part is fixedly connected to the first flange Y111, the first web Y112, the second flange Y121 and the second web Y122 and encloses the right prefabricated abdominal cavity on the right side of the prefabricated area.

[0155] The length of the connection area is the length of the plastic hinge zone under seismic action, which is specified by the design and can realize seismic energy dissipation by pure steel components in the connection area under seismic action; the M-shaped steel bar Y130 is interrupted outside the connection area; stiffening steel plates Y150 are set on both sides of the prefabricated area.

[0156] like Figure 6 As shown, this embodiment also includes a repair welded steel plate Y160 disposed within the connection area Y101; both ends of the repair welded steel plate Y160 are welded and fixed to the first web plate Y112 and the second web plate Y122 respectively (the connection is a weld 600); the repair welded steel plate Y160 is provided with several connection holes. Connection holes are provided at both ends of the first T-shaped steel Y110 and the second T-shaped steel Y120, as well as within the connection area. By welding the repair welded steel plate Y160 and adding connection holes to it, the connection stiffness and strength between the web plate outer concrete 300 composite component and other connecting components are improved.

[0157] The composite member with its web encased in concrete provided by this invention has the following advantages:

[0158] 1) Good corrosion and fire resistance. The concrete wrapping of the web plate solves the problem of high cost of corrosion and fire protection for steel beams or columns, and greatly improves the durability of steel beams or columns.

[0159] 2) The manufacturing process is highly standardized and automated. T-shaped steel and corrugated steel bars are used to process T-shaped steel-steel truss composite hollow components to achieve standardization of component manufacturing, reduce processing volume and lower processing costs;

[0160] 3) Good load-bearing performance and strong integrity. The open web structure connects the concrete on both sides, which greatly improves the integrity of the structure and enables the steel beams or columns to work together with the outer concrete, significantly improving the structural strength and stiffness and reducing costs.

[0161] 4) Good seismic performance. The component ends are provided with connection areas. The length of the connection area is the length of the plastic hinge zone under seismic action. The connection area is a seismic energy dissipation area. Pure steel components have good ductility and strong seismic performance.

[0162] 5) Easy to connect, can be fully bolted; can be fully bolted to the steel column through the connection area, making connection convenient.

[0163] In summary, the composite component with externally encased concrete web and its composite structure proposed in this invention can leverage the advantages of steel structures, such as convenient connection and good seismic performance, while also integrating the advantages of steel-concrete composite structures. By utilizing the combined effect of steel and concrete, it overcomes the shortcomings of steel components, such as poor corrosion and fire resistance and weak stiffness. It achieves many advantages such as standardized production, prefabricated construction, long-term durability, and economic applicability, greatly enhancing the competitive advantage of steel structures and showing broad application prospects in prefabricated buildings.

[0164] Example 5

[0165] The structure of this embodiment is basically the same as that of embodiment 4, except that:

[0166] like Figure 11 As shown, the web-encased concrete composite member 3 is embedded as a column within the wall S4. The outer flange 3a of the web-encased concrete composite member 3, located near the outside of the wall, is coated with an anti-corrosion layer (not shown). A glass wool board S10 is then laid outside the anti-corrosion layer to prevent the web-encased concrete composite member from acting as a thermal bridge between the interior and exterior sides of the wall S4. On a projection plane parallel to the wall S4, the glass wool board does not cover the entire wall S4; it only covers all or part of the web-encased concrete composite member 3.

[0167] Unlike insulation boards or insulation layers that are installed on the outside of the wall as a whole, the purpose of glass wool boards in this invention is to block thermal bridges at the column and solve the problem of heat conduction in local areas of the column.

[0168] This invention offers significant thermal insulation performance at a low cost. By applying glass wool boards to the exterior side of the concrete composite member surrounding the web, heat transfer caused by the concrete composite member acting as a thermal bridge is effectively reduced. This eliminates heat flow concentration on both the interior and exterior sides of wall S4 at the location of the concrete composite member, significantly improving the thermal insulation performance of wall S4. This enables wall S4 to meet the requirements of 75% energy saving in residential buildings and a heat transfer coefficient of <0.45W / (m²). 2 The green and energy-saving design requirements of K).

[0169] On the projection plane parallel to the wall S4, the outer flanges 3a of the glass wool board S10 protrude on both the left and right sides and are embedded in the wall S4.

[0170] The glass wool board S10 extends appropriately on both sides of the outer flange 3a, further improving its heat-blocking performance against thermal bridges in the concrete composite member encased in the web, and enhancing the thermal insulation performance of the wall S4. The glass wool board S10 is embedded within the wall S4, reducing the likelihood of edge lifting or bulging, resulting in a more secure installation.

[0171] Furthermore, along the thickness direction of wall S4, two layers of glass wool boards are installed on the outdoor side of the concrete composite member encasing the web. These two adjacent layers of glass wool boards include an inner glass wool board S11 closer to the concrete composite member encasing the web, and an outer glass wool board S12 farther away from the concrete composite member encasing the web. On a projection plane parallel to wall S4, the outer glass wool board S12 protrudes from the inner glass wool board S11 on both sides. On the horizontal section of wall S4, the two layers of glass wool boards are embedded in wall S4 in an inverted pyramid (stepped) shape.

[0172] On the horizontal section of wall S4, several layers of glass wool boards are arranged in a stepped (inverted pyramid) shape. The thermal conductivity of the concrete composite member encased in the web follows a normal distribution, with the highest heat transfer in the central area directly opposite the member, forming a thermal bridge zone. Heat transfer gradually decreases on the left and right sides, which are the areas affected by thermal bridges. The inverted pyramid arrangement of the glass wool boards on one side of the concrete composite member effectively blocks heat transfer from the front of the member while also preventing heat scattering from the sides.

[0173] Furthermore, the multiple layers of glass wool boards are arranged in an inverted pyramid shape, with each board able to be embedded into the wall on both sides (S4). This ensures that each glass wool board will not warp or bulge during the building's decades-long lifespan after installation. While meeting building energy efficiency design standards, this reduces building energy-saving costs. This invention can be widely used in the field of exterior wall insulation for steel frame structures.

[0174] To achieve the same thermal bridge breaking effect with a single-layer glass wool board, the thickness of the board needs to be increased. However, excessively thick glass wool boards are often non-standard and require custom manufacturing, thus increasing construction costs. Furthermore, excessively thick glass wool boards are too heavy, making installation difficult and prone to detachment after installation. Additionally, while a single-layer glass wool board may achieve the desired insulation effect in the thermal bridge column area, it may result in over-insulation in the corresponding area affected by the thermal bridge, leading to material waste.

[0175] This application allows for the flexible use of 2-6 layers of conventional glass wool boards according to design requirements. The thickness of each layer is significantly reduced, facilitating installation and ensuring the glass wool boards are less prone to falling off, resulting in greater stability. Furthermore, there is no excessive waste of materials, making it a green and energy-saving construction method.

[0176] In the above embodiments, more preferably, the number of glass wool boards is 3-4 layers, and the width of the outer flange 3a and the width of the 3-4 layers of glass wool boards are arranged in a geometric sequence, wherein the ratio is preferably in the range of 1.6 to 2. Taking a 3-layer glass wool board as an example, the width of the inner layer of glass wool board is 1.6 to 2 times the width of the outer flange 3a, the width of the middle layer of glass wool board is 1.6 to 2 times the width of the inner layer of glass wool board, and the width of the outer layer of glass wool board is 1.6 to 2 times the width of the middle layer of glass wool board. The heat transfer coefficient of the steel column area is <0.1 W / (m²). 2 ·K), while glass wool boards can save an average of 42% on materials and 63% on economic costs.

[0177] The inner layer of glass wool board S11 is applied to the outer side of the outer flange 3a and the wall S4 using adhesive. The outer layer of glass wool board S12 is applied to the inner layer of glass wool board S11 and the wall S4 using adhesive 5.

[0178] In addition, connecting anchors are installed between the wall and the glass wool board. After the glass wool board is glued to the wall, the connecting anchors are used for further securing. The glass wool board is fixed by both adhesive and anchors to ensure the overall performance of the insulation layer and the wall.

[0179] The flange closest to the interior side of the concrete composite member encased in the web is the inner flange 3b, and the outer end face of the inner flange 3b is coated with an anti-corrosion layer (not shown); and no thermal insulation material is laid on the outside of the anti-corrosion layer of the inner flange.

[0180] Since the indoor temperature and humidity are relatively stable with little change, the anti-corrosion layer can remain effective for a long time. By utilizing the thermal bridging effect of the concrete composite component encased in the web, and combined with the blocking of thermal bridges by the glass wool board outside the outer flange, the temperature fluctuation at the outer flange anti-corrosion layer is greatly reduced, thus extending the effective life of the anti-corrosion layer more effectively and improving the overall anti-corrosion performance of the concrete composite component encased in the web.

[0181] Example 6

[0182] This embodiment discloses a composite structure building, such as Figure 12 As shown, it includes: beams (not shown), columns 30, shear walls 40, and floor slabs (not shown).

[0183] The column 30 is constructed from the concrete composite member with an outer web, as described in Example 5. A shear wall 40 is provided between the two columns 30.

[0184] The shear wall 40 includes a wall body and wall connectors 43 disposed within the wall body; the wall body includes inner side plates 41 and outer side plates 42 spaced apart along its thickness direction; end plates 45 are provided at both ends of the inner side plates 41 and outer side plates 42, and are fixedly connected to the first and second side steel plates on the column 30 through the end plates 45. To avoid thermal bridging, the end plates can be omitted, and the inner and outer side plates can be directly connected to the side steel plates on the column.

[0185] The wall connector 43 has multiple through holes along the thickness direction of the wall; both ends of the wall connector 43 are fixedly connected to the inner side plate 41 and the outer side plate 42 respectively; and the wall connector 43 is made of fiber reinforced composite material, and the wall body, i.e., the space between the inner side plate 41 and the outer side plate 42, is filled with thermal insulation material 44.

[0186] The present invention relates to a composite structure building in which wall connectors 43 are installed within the shear wall 40. The wall connectors 43 have through holes, which, while achieving the buckling resistance function of the shear wall 40, also reduces its weight, facilitating on-site flipping, handling, and hoisting. Simultaneously, the shear wall 40 exhibits reasonable stress distribution and reliable performance, can be factory-fabricated, simplifies manufacturing, and eliminates the need for on-site bonding, reducing on-site workload and improving connection efficiency. Furthermore, the wall connectors 43 are made of fiber-reinforced composite material, and the wall is filled with thermal insulation material 44, further enhancing the thermal insulation performance of the wall and the entire building.

[0187] The wall connector 43 can be a plurality of spaced connecting pipes or a connecting plate with a honeycomb cross-section. Preferably, the end of the wall connector 43 is connected to the inner side plate 41 and the outer side plate 42 via connecting feet, which increase the connection area between the wall connector 43 and the inner side plate 41 and the outer side plate 42. The wall connector 43 is bonded to the connecting feet using resin.

[0188] Example 7

[0189] This embodiment discloses a composite structure building. This embodiment is basically the same as embodiment 3 or 4, except that:

[0190] like Figure 13As shown, the composite structure building includes a constraint support member 60; the two ends of the constraint support member 60 are fixedly connected to the middle part of the column and the middle part of the beam, respectively.

[0191] like Figure 14 As shown, the constraint support 60 includes an outer constraint sleeve 61 and an inner core 62, a constraint ring 63, and a constraint rod 64, all of which are disposed within the outer constraint sleeve.

[0192] Both the constraint rod 64 and the inner core 62 are arranged along the length of the outer constraint sleeve. The constraint ring 63 is fixed to the outer constraint sleeve and is sleeved over the inner core 62 and the constraint rod 64 to fix the inner core 62 and the constraint rod 64.

[0193] like Figure 14 As shown, the inner core 62 is a long strip; constraint rods 64 are provided on both sides of the inner core 62; or, as Figure 15 As shown, the inner core 62 is a long strip with a cross-shaped cross section, and constraint rods 64 are provided at the four intervals of the cross shape.

[0194] The constraint ring 63 includes multiple annular constraint reinforcing bars that are sleeved around the inner core 62 and the constraint rod 64; these annular constraint reinforcing bars are spaced apart sequentially along the length of the constraint rod 64. Alternatively, the constraint ring 63 can also be annular constraint reinforcing bars spirally wound around the inner core 62. Preferably, the annular constraint reinforcing bars are plain round steel bars. The constraint rod 64 is preferably a steel bar; the steel bar is welded and fixed to the plain round steel bars. An anti-friction layer is provided between the constraint rod 64 and the inner core 62 to reduce the frictional resistance between them.

[0195] like Figure 16 As shown, the outer constraint sleeve 61 includes a mortar layer 61a, and the mortar layer 61a is provided with a reinforcing structure; the reinforcing structure is a wire mesh 61b (or fiberglass mesh); the wire mesh is arranged along the circumference of the outer constraint sleeve.

[0196] like Figure 13 As shown, the inner core 62 has connecting ends 65 extending out of the outer constraint sleeve at both ends; the width of the connecting end is greater than the width of the inner core 62 inside the outer constraint sleeve (the middle width of the inner core 62); the connecting end has mounting holes. The constraint support is connected to the beam and the column respectively through the mounting holes on the connecting end.

[0197] The buckling restraint brace of this invention uses restraint rods 64 and restraint rings 63 to constrain the buckling of the inner core 62, limiting local buckling and thus fully utilizing the core plate's performance. Furthermore, during processing, it is only necessary to fit the restraint rings 63 over the inner core 62 and restraint rods 64 for fixation, requiring minimal intervention and eliminating the need for specialized factory processing; therefore, manufacturing is simple and easy. The restraint rods 64 are made of steel bars, the inner core 62 is made of steel core, and the restraint rings 63 are made of plain round steel bars—all commonly used materials, resulting in low cost and good economic efficiency. The outer restraint sleeve is made of mortar, preventing corrosion of the buckling brace and eliminating the need for maintenance during its service life.

[0198] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A composite structural building with anti-cold and thermal bridge nodes for floor slabs, characterized in that, include: Anti-cold and thermal bridging joints for beams, columns, shear walls, and floors; The cold and thermal bridging joint for floor slabs includes sandwich panels, steel reinforcement pads, and steel reinforcement; The sandwich panel includes a first metal panel, a second metal panel, multiple intermediate connectors, an annular sealing plate, and thermal insulation material. The annular sealing plate is fixedly connected between the opposing first and second metal panels, and forms a sealed cavity around the first and second metal panels. One end of each intermediate connector is fixedly connected to the first metal panel, and the other end is fixedly connected to the second metal panel, and is disposed within the sealed cavity. The thermal insulation material fills the sealed cavity. The reinforcing steel plate is welded to both the surface of the first metal panel facing away from the second metal panel and the surface of the second metal panel facing away from the first metal panel. Multiple reinforcing bars extending outward are welded onto the reinforcing bar base plate; A shear wall includes a wall body and wall connectors installed within the wall body; the wall body includes inner and outer side panels spaced apart along its thickness direction; The wall connector has multiple through holes along the thickness direction of the wall; both ends of the wall connector are fixedly connected to the inner side plate and the outer side plate respectively; and the wall connector is made of fiber reinforced composite material, and the wall is filled with thermal insulation material between the inner side plate and the outer side plate. The column is composed of a composite component with a web encased in concrete. The web-encased concrete composite member includes: a T-shaped steel-reinforced truss composite hollow member, a steel reinforcement cage, tie bars, and concrete; The T-shaped steel-reinforced truss composite hollow component includes: a first T-shaped steel, a second T-shaped steel, an M-shaped steel bar, and a stiffening steel plate; The first T-shaped steel includes a first flange and a first web; The second T-shaped steel includes a second flange and a second web; The first T-shaped steel and the second T-shaped steel are opposite to each other and spaced apart, and are arranged in an I-shape as a whole; In the length direction, the T-shaped steel-reinforced truss composite hollow component includes connection areas at both ends and a prefabricated area in the middle; The stiffening steel plate is vertically disposed at the junction of the connection area of ​​the first T-beam and the second T-beam and the prefabrication area; The stiffening steel plate is fixedly connected to the first T-shaped steel and the second T-shaped steel and encloses a prefabricated abdominal cavity in the prefabricated area; the prefabricated abdominal cavity includes a left prefabricated abdominal cavity and a right prefabricated abdominal cavity; The M-shaped steel bar is set in the prefabrication area. The M-shaped steel bar moves back and forth between the first web and the second web in a wave-like pattern. The M-shaped steel bar, the first web and the second web are welded together to form a whole. The precast abdominal cavity is filled with concrete, and the steel reinforcement skeleton is embedded in the concrete. The steel reinforcement cage includes main reinforcing bars, and the two ends of the main reinforcing bars are fixedly connected to the stiffening steel plate. The steel reinforcement cage includes a left steel reinforcement cage disposed in the left prefabricated abdominal cavity and a right steel reinforcement cage disposed in the right prefabricated abdominal cavity. The tie bars pass through the gaps in the M-shaped steel bars, fixing the left and right steel bar skeletons together.

2. The composite structure building according to claim 1, characterized in that, The intermediate connecting component is a connecting pipe, connecting rod, honeycomb plate, or corrugated plate; When the intermediate connector is a connecting pipe, the connecting pipe is filled with heat insulation material.

3. The composite structure building according to claim 2, characterized in that, The intermediate connector and the annular sealing plate are made of stainless steel, fiber-reinforced composite material or plastic.

4. The composite structure building according to claim 1, characterized in that, The first metal panel is a carbon structural steel plate, a low-alloy high-strength structural steel plate, or a stainless steel plate; The second metal panel is a carbon structural steel plate, a low-alloy high-strength structural steel plate, or a stainless steel plate.

5. The composite structure building according to claim 1, characterized in that, The reinforcing steel spacers on both sides of the sandwich panel are symmetrically arranged along the sandwich panel; The reinforcing bars on both sides of the sandwich panel are symmetrically arranged along the sandwich panel.

6. The composite structure building according to claim 1, characterized in that, The annular sealing plate includes a bottom sealing plate, a first side sealing plate, a top sealing plate, and a second side sealing plate that are connected end to end along the circumference; the bottom sealing plate and the top sealing plate are arranged opposite to each other; the first side sealing plate and the second side sealing plate are arranged opposite to each other.

7. The composite structure building according to claim 1, characterized in that, Including reinforced concrete structures; The reinforced concrete structure is cast on the side of the first metal panel away from the second metal panel or on the side of the second metal panel away from the first metal panel, and is fixedly connected to the first metal panel or the second metal panel as an integral structure. The steel reinforcement cage in the reinforced concrete structure is fixedly connected to the steel reinforcement at the corresponding end of the anti-cold and thermal bridging node of the floor slab.

8. The composite structure building according to claim 1, characterized in that, The stiffening steel plate is provided with reinforcing bar holes, and the two ends of the main reinforcing bar are provided with threaded sections. After the threaded sections pass through the reinforcing bar holes, they are fixedly connected to the stiffening steel plate by nuts.

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