A web plate outer-wrapped concrete composite component and composite structural building thereof

Abstract

The present invention provides a web-surface concrete composite component and a composite structure building thereof. The web-surface concrete composite component comprises: a T-shaped steel-rebar truss composite hollow member, a steel bar skeleton, tie steel bars and concrete; the T-shaped steel-rebar truss composite hollow member comprises: an upper T-shaped steel, a lower T-shaped steel, an M-shaped steel bar and a stiffening steel plate; the present invention can give full play to the advantages of convenient connection and good seismic performance of steel structures, while combining the advantages of steel-concrete composite structures, and utilizing the steel-concrete composite effect to overcome the shortcomings of poor anti-corrosion and fire-proof performance and weak rigidity of steel components, and realizes many advantages such as standardized production of components, assembly construction, long-term durability, and economic applicability, greatly enhancing the competitive advantage of steel structures, and having broad application prospects in prefabricated buildings.

Description

Technical Field

[0001] The invention relates to the technical field of building structures, in particular to a web-plate outer-wrapped concrete composite component and a composite structural building thereof. Background Art

[0002] Cast-in-place concrete shear wall residential structures are the mainstream of current residential buildings in my country, but cast-in-place structures have many shortcomings such as more wet operations on site, low production efficiency, waste of resources, environmental pollution, and failure to achieve four savings and one environmental protection, making it difficult to adapt to the development needs of the modernization of the construction industry. Compared with concrete structures, steel structures have the advantages of "light, fast, good, and economical". At the same time, they are green building materials that can be recycled and reused. Compared with other commonly used building materials, they are most conducive to energy saving, material saving, water saving, and land saving.

[0003] However, steel structures also have some shortcomings, such as poor fire resistance and corrosion resistance. Although anti-corrosion and fire-proof coatings can meet the use requirements, the validity period of anti-corrosion and fire-proof coatings does not match the service life of the structure. The validity period of anti-corrosion and fire-proof coatings is short, and multiple maintenance is required during the service life. There is still a lack of effective solutions for how to deal with the anti-corrosion and fire-proof coatings after their validity period expires. In addition, the high cost of steel structures has reduced the enthusiasm of developers to use steel-structured houses, restricting the application of steel structures in residential buildings.

[0004] Therefore, developing new steel-concrete composite components to improve the corrosion and fire resistance, mechanical properties, economy and durability of steel structures is one of the key technical issues that must be solved for the large-scale application of steel structures in residential buildings. Summary of the invention

[0005] The purpose of the present invention is to provide a composite component with a web-wrapped concrete and a composite structural building thereof, the purpose of which is to solve the problem of high cost of corrosion and fire prevention of steel beams or columns by wrapping the web with concrete, and to improve durability; the concrete on both sides is connected by the web hollow structure, which greatly improves the integrity of the structure, enables the steel beam or column and the wrapped concrete to work together, greatly improves the structural strength and rigidity and reduces costs; and standardizes the production of components by T-shaped steel and corrugated steel bars, reduces the processing volume and reduces the processing cost.

[0006] In order to solve the above technical problems, the present invention provides a web-covered concrete composite component, comprising: a T-shaped steel-rebar truss composite hollow member, a steel bar skeleton, tie steel bars and concrete;

[0007] The T-steel-rebar truss composite hollow member comprises: an upper T-steel, a lower T-steel, an M-shaped steel bar (or a wavy steel bar) and a stiffening steel plate;

[0008] The upper T-shaped steel comprises an upper flange and an upper web;

[0009] The lower T-shaped steel comprises a lower flange and a lower web;

[0010] The upper T-shaped steel and the lower T-shaped steel are arranged vertically opposite to each other and spaced apart, and are arranged in an I-shaped shape as a whole;

[0011] In the length direction, the T-shaped steel-rebar truss composite hollow member includes connection areas at both ends and a prefabricated area in the middle;

[0012] The stiffening steel plate is vertically arranged at the junction of the connection area of ​​the upper T-shaped steel and the lower T-shaped steel and the prefabricated area;

[0013] The reinforcing steel plate is fixedly connected to the upper T-shaped steel and the lower 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;

[0014] The M-shaped steel bar is arranged in the prefabricated area, the M-shaped steel bar moves back and forth between the upper web and the lower web in a wave-like manner, and the upper web and the lower web of the M-shaped steel bar are welded to form a whole;

[0015] The prefabricated abdominal cavity is filled with concrete, and the steel bar skeleton is embedded in the concrete;

[0016] The steel reinforcement skeleton comprises main stress-bearing reinforcements, and both ends of the main stress-bearing reinforcements are respectively fixedly connected to the reinforcing steel plates;

[0017] The steel reinforcement skeleton comprises a left steel reinforcement skeleton arranged in the left prefabricated abdominal cavity, and a right steel reinforcement skeleton arranged in the right prefabricated abdominal cavity;

[0018] The tie steel bars pass through the M-shaped steel bar gaps to fix the left steel bar skeleton and the right steel bar skeleton in connection.

[0019] Furthermore, the reinforcing steel plate is provided with steel bar holes, and threaded sections are provided at both ends of the main force-bearing bars. After the threaded sections pass through the steel bar holes, they are fixedly connected to the reinforcing steel plate using nuts.

[0020] The nut is threadedly connected to the end of the main reinforcement. The main reinforcement is fixed by tightening the nut, and the force borne by the main reinforcement is transmitted to the stiffening steel plate and the upper T-steel and the lower T-steel, so as to realize continuous force transmission.

[0021] Furthermore, the steel skeleton also includes: stand bars and stirrups.

[0022] Furthermore, the M-shaped steel bar is formed by bending a plain round steel bar or a threaded steel bar.

[0023] Furthermore, the number of the M-shaped steel bars is two groups, and the two groups of the M-shaped steel bars are respectively attached to the left and right sides of the upper web and the lower web.

[0024] Furthermore, the tie steel bars are fixedly connected to the left steel bar skeleton and the right steel bar skeleton by binding.

[0025] Further, the stiffening steel plate includes a left stiffening portion and a right stiffening portion;

[0026] The left stiffening part is fixedly connected to the upper flange, the upper web, the lower flange and the lower web and encloses the left prefabricated abdominal cavity on the left side of the prefabricated area;

[0027] The right stiffening part is fixedly connected to the upper flange, the upper web, the lower flange and the lower web, and encloses the right prefabricated abdominal cavity on the right side of the prefabricated area.

[0028] Among them, the length of the connection area is the length of the plastic hinge area of ​​the steel beam or column under the action of earthquake, which is specified by the design, and can achieve seismic energy absorption by pure steel components in the connection area under the action of earthquake; the M-shaped steel bar is interrupted outside the connection area; and the reinforcing steel plates are arranged on both sides of the prefabricated area.

[0029] Furthermore, the upper T-shaped steel and / or the lower T-shaped steel are hot-rolled split T-shaped steel or welded T-shaped steel.

[0030] Furthermore, it also includes a repair weld steel plate arranged in the connection area; the upper and lower ends of the repair weld steel plate are respectively welded and fixed to the upper web and the lower web; and the repair weld steel plate is provided with a plurality of connection holes.

[0031] Wherein, connection holes are arranged at both ends of the upper T-shaped steel and the lower T-shaped steel and in the connection area. By welding the repair steel plate and adding connection holes on the repair steel plate, the connection stiffness and strength of the web plate outer concrete composite component and other butting components are improved.

[0032] Furthermore, the web-surface concrete composite component is a beam or a column.

[0033] Furthermore, in the web-clad concrete composite component, the flanges of the upper T-shaped steel and the lower T-shaped steel close to the outdoor side are outer flanges, and the flanges of the lower T-shaped steel and the upper T-shaped steel close to the indoor side are inner flanges; the outer end surface of the outer flange is coated with an external anti-corrosion layer.

[0034] Furthermore, a plurality of layers of glass wool boards are laid outside the outer anti-corrosion layer of the outer flange to block the web-clad concrete composite component from acting as a thermal bridge to transfer heat flow between the indoor and outdoor sides of the wall.

[0035] While effectively eliminating the thermal bridge effect at the web-clad concrete composite components and improving the overall thermal insulation performance of the building, several layers of glass wool boards can effectively reduce the impact of external temperature changes on the external anti-corrosion layer and increase the effective anti-corrosion period of the external anti-corrosion layer.

[0036] Furthermore, the outer end surface 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.

[0037] Since the indoor temperature and humidity do not change much and are relatively stable, it is beneficial for the inner anti-corrosion layer to remain effective for a long time. The thermal bridge effect of the web-wrapped concrete composite component itself is utilized, and the glass wool board outside the outer flange blocks the thermal bridge, thereby greatly reducing the temperature fluctuations at the outer anti-corrosion layer of the outer flange, thereby more effectively extending the effective life of the outer anti-corrosion layer, thereby improving the anti-corrosion performance of the web-wrapped concrete composite component as a whole.

[0038] In addition, the present invention also discloses a processing method of the web-surface concrete composite component, which comprises the following steps:

[0039] 1) Position and weld the upper T-shaped steel, the lower T-shaped steel and the M-shaped steel bar, and weld the repair welding steel plate to the upper T-shaped steel and the lower T-shaped steel to obtain a T-shaped steel-steel truss combined hollow member;

[0040] 2) Place the two processed steel bar skeletons into the prefabricated abdominal cavity formed by the upper and lower flanges and webs of the processed T-shaped steel-steel truss combined hollow parts and fix them in place;

[0041] 3) Pass the tie steel bar through the M-shaped steel bar gap of the T-steel-steel truss composite hollow member and tie it to the steel bar skeleton on both sides;

[0042] 4) Open holes in the stiffening steel plate and pass through the stress-bearing steel bars in the steel frame, and position weld them with the upper and lower T-shaped steels and the repair welding steel plate;

[0043] 5) Use fastening nuts to fix the stressed steel bars on the stiffening steel plates;

[0044] 6) Place the processed parts on their side on the fixed formwork table and temporarily fix them, then pour concrete and vibrate to make it dense;

[0045] 7) After the concrete has initially set, turn the component over, pour concrete on the other side, and vibrate to make it dense;

[0046] 8) Steam curing or natural curing to the design strength of concrete.

[0047] By adopting the above technical solution, the present invention has the following beneficial effects:

[0048] The web plate outer-wrapped concrete composite component provided by the present invention has the following advantages:

[0049] 1) Good anti-corrosion and fireproof performance. The web plate wrapped with concrete solves the problem of high anti-corrosion and fireproof costs of steel beams or columns, and greatly improves the durability of steel beams or columns;

[0050] 2) The production is standardized and highly automated. T-shaped steel and corrugated steel bars are used to process the T-shaped steel-steel truss combined hollow parts to achieve the standardization of component production, reduce processing volume, and reduce processing costs;

[0051] 3) Good mechanical performance and strong integrity. The hollow web structure connects the concrete on both sides, greatly improving the integrity of the structure, enabling the steel beam or column to work with the outer concrete, greatly improving the structural strength and rigidity and reducing costs;

[0052] 4) Good seismic performance. A connection area is set at the end of the component. The length of the connection area is the length of the plastic hinge area under the action of an earthquake. The connection area is a seismic energy dissipation area. Pure steel components are used with good ductility and strong seismic performance.

[0053] 5) Easy to connect, can be fully bolted; can be fully bolted to the steel column or steel beam through the connection area, easy to connect.

[0054] In summary, the web-wrapped concrete composite component and its composite structure building proposed in the present invention can give full play to the advantages of convenient connection and good seismic performance of steel structure, while integrating the advantages of steel-concrete composite structure, and utilizing the combined effect of steel-concrete to overcome the shortcomings of poor corrosion and fire resistance and weak rigidity of steel components, and realize standardized production of components, assembly construction, long-term durability, economic applicability and many other advantages, which greatly enhances the competitive advantage of steel structure and has broad application prospects in prefabricated buildings.

[0055] In a third aspect, the present invention further discloses a composite structural building with the above-mentioned web-surface concrete composite member, comprising: a beam, a column, a shear wall and a floor;

[0056] The column is composed of a composite member with concrete wrapped around the web;

[0057] The shear wall comprises a wall body and a wall connecting member arranged in the wall body; the wall comprises an inner plate and an outer plate arranged at intervals along the thickness direction thereof;

[0058] The wall connector is provided with a plurality of through holes along the thickness direction of the wall; the two ends of the wall connector are fixedly connected to the inner plate and the outer plate respectively; and the wall connector is made of fiber reinforced composite material, and the wall is filled with heat insulation material.

[0059] The composite structure building of the present invention is provided with a wall connector in the shear wall, and a through hole is provided on the wall connector. On the basis of realizing the anti-buckling function of the shear wall, the weight of the shear wall is reduced, and it is convenient to flip, carry and hoist on site. At the same time, the shear wall has reasonable force and reliable performance, can be processed and formed in the factory, and the processing is simple, and no on-site compounding is required, which reduces the on-site workload and improves the connection efficiency. In addition, the wall connector is made of fiber-reinforced composite materials and the wall is filled with thermal insulation materials, which further improves the thermal insulation performance of the wall and the entire building.

[0060] Furthermore, the wall connecting piece is a plurality of connecting pipes arranged at intervals, or a connecting plate with a honeycomb-shaped cross section.

[0061] Furthermore, the ends of the wall connector are connected to the inner plate and the outer plate via connecting legs, and the connecting legs are used to increase the connection area between the wall connector and the inner plate and the outer plate. The wall connector is bonded to the connecting legs using resin.

[0062] Furthermore, the connecting pipe is connected to the inner plate or the outer plate through a reinforcement, and the reinforcement includes a cylinder and a connecting ring arranged in an L shape; the inner edge of the connecting ring is connected to the outer edge of the cylinder; the cylinder is sleeved inside the connecting pipe, and 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 a bonding portion that is bonded to the inner wall of the inner plate or the outer plate.

[0063] As a result, the connection strength between the connecting pipe and the inner plate or the outer plate is greatly improved. At the same time, the connecting tube can limit the buckling of the connecting pipe, thereby improving the anti-buckling performance. The bonding part can ensure that the connection position between the connecting ring and the wall is at the preset position, and the constructor can bond according to the position of the bonding part, thereby ensuring the accuracy of the bonding position.

[0064] Furthermore, in the horizontal projection plane, the floor comprises a floor slab arranged indoors and a cantilever slab arranged outdoors; the floor slab and the cantilever slab are connected via an anti-cold and heat bridge node; the anti-cold and heat bridge node comprises a sandwich plate, a first steel plate and a second steel plate;

[0065] The sandwich panel comprises a first metal panel, a second metal panel, a plurality of node connectors, an annular sealing plate and a heat-insulating material; the annular sealing plate is fixedly connected between the first metal panel and the second metal panel which are arranged opposite to each other, and is surrounded by the first metal panel and the second metal panel to form a sealed cavity; one end of the node connector is fixedly connected to the first metal panel, and the other end is fixedly connected to the second metal panel, and is arranged in the sealed cavity; the heat-insulating material is filled in the sealed cavity;

[0066] The first steel bar pad is welded on the surface of the first metal panel facing away from the second metal panel, and a plurality of floor steel bars extending toward the indoor side and entering the floor are welded on the first steel bar pad;

[0067] The second steel bar pad is welded to the surface of the second metal panel on one side facing away from the first metal panel, and a plurality of cantilever plate steel bars extending toward the outdoor side and entering the cantilever plate are welded to the second steel bar pad.

[0068] Among them, the cantilever plate can be a cantilevered balcony, a cantilevered air-conditioning panel, a rain shield and other components.

[0069] Preferably, the node connection member is a connecting pipe, a connecting rod, a honeycomb plate or a corrugated plate;

[0070] When the node connection piece is a connection pipe, the connection pipe is filled with heat insulation material.

[0071] Preferably, the node connector and the annular sealing plate are made of fiber-reinforced composite material or plastic. And preferably, the thermal insulation material is rock wool or foamed polyurethane.

[0072] Preferably, 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.

[0073] 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 which are connected end to end in the circumferential direction; 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; and the steel bars are threaded steel bars.

[0074] During construction, the first metal panel, the second metal panel, a plurality of node connectors and the annular sealing plate are fixedly connected together, and a process hole is reserved on the annular sealing plate;

[0075] Welding steel reinforcement plates to the first metal panel and the second metal panel respectively;

[0076] Steel bars are welded on each steel bar pad;

[0077] Put the steel bars on one side of the first metal panel or the second metal panel into the formwork (floor slab or cantilever slab formwork);

[0078] Tie the steel bars to the steel bars in the formwork to form a steel skeleton;

[0079] Pour concrete into the formwork;

[0080] Fill the sealing cavity with heat-insulating material through the process hole and squeeze it tightly;

[0081] The process holes are sealed to form prefabricated components with anti-cold and thermal bridge nodes for the floor.

[0082] The anti-cold and heat bridge node of the floor structure of the present invention has the characteristics of simple construction and small on-site workload; rock wool, foamed polyurethane and other insulation materials are filled in the middle of the sandwich panel, and at the same time, the insulation material is embedded in the sealed cavity of the sandwich panel to avoid the formation of thermal bridges in the sandwich panel, that is, a broken bridge structure is formed between the floor slab and the cantilever slab on both sides of the indoor and outdoor, so that the thermal insulation effect is good, the durability of the insulation material is good and there is no risk of falling off; the steel bars are welded to the metal panels through the steel bar pads, and a plurality of node connectors are fixed between the metal panels, so that the anti-cold and heat bridge node has high structural strength and good force-bearing performance.

[0083] Furthermore, it also includes a restraining support member; the two ends of the restraining support member are respectively fixedly connected to the middle part of the column and the middle part of the beam;

[0084] The restraining support member includes an outer restraining sleeve and an inner core, a restraining ring and a restraining rod all disposed in the outer restraining sleeve;

[0085] The constraint rod and the inner core are both arranged along the length direction of the outer constraint sleeve. The constraint ring is fixed to the outer constraint sleeve and is sleeved outside the inner core and the constraint rod to fix the inner core to the constraint rod.

[0086] Furthermore, the inner core is in the shape of a long strip; the restraining rods are arranged on both sides of the inner core; or, the inner core is in the shape of a long strip with a cross-shaped cross section, and the restraining rods are arranged at four intervals of the cross.

[0087] Furthermore, the constraint ring includes a plurality of annular constraint steel bars sleeved outside the inner core and the constraint rod; the plurality of annular constraint steel bars are sequentially spaced along the length direction of the constraint rod.

[0088] Furthermore, the restraining ring is an annular restraining steel bar spirally wound outside the inner core, wherein the annular restraining steel bar is preferably a plain round steel bar.

[0089] Furthermore, the restraining rod is a steel rod; the steel rod is welded and fixed to the plain round steel bar.

[0090] Furthermore, an anti-friction layer is provided between the restraining rod and the inner core to reduce the frictional resistance between the restraining rod and the inner core.

[0091] Furthermore, the material of the outer constraint sleeve is mortar, and a reinforcement structure is provided inside the outer constraint sleeve; the reinforcement structure is a steel wire mesh or a glass fiber mesh; the steel wire mesh or the glass fiber mesh is arranged along the circumference of the outer constraint sleeve.

[0092] Furthermore, the two ends of the inner core are respectively provided with connection ends extending out of the outer constraint sleeve; the width of the connection ends is greater than the width of the inner core in the outer constraint sleeve (the middle width of the inner core); and the connection ends are provided with mounting holes. The constraint support is respectively connected to the crossbeam and the column through the mounting holes on the connection ends.

[0093] The buckling restraint support, restraint rod and restraint ring in the present invention restrain the buckling of the inner core and limit the local buckling of the inner core, so that the performance of the core plate can be fully exerted. At the same time, during processing, it is only necessary to put the restraint ring on the inner core and the restraint rod for fixing, which has low requirements and does not require special factory processing. Therefore, the processing is simple and easy to operate. The restraint rod is made of steel rod, the inner core is made of steel core, and the restraint ring is made of plain round steel bar, which are all commonly used materials with low cost and good economy. The outer restraint sleeve is made of mortar to avoid rusting of the anti-buckling support and is maintenance-free during the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0095] Figure 1 This is a schematic structural diagram of a web-surface concrete composite component in Example 1 of the present invention;

[0096] Figure 2 for Figure 1 A side view of a T-steel-rebar truss composite hollow member is shown;

[0097] Figure 3 for Figure 1 The front view of the T-steel-rebar truss composite hollow member is shown;

[0098] Figure 4 for Figure 2 Enlarged view at A in the middle;

[0099] Figure 5 for Figure 1 A transverse cross-sectional view of

[0100] Figure 6 Schematic diagram of the state of T-steel-rebar truss composite hollow parts during casting.

[0101] Figure 7 This is a thermal insulation structure diagram of a broken bridge with a web plate wrapped outside a concrete composite member in Example 2;

[0102] Figure 8 is a structural schematic diagram of the shear wall in Example 3;

[0103] Fig. 9 Schematic diagram of the connection structure of the floor slab, cantilever slab and anti-cold and thermal bridge nodes in Example 4;

[0104] Fig.10 This is a schematic diagram of the structure of the anti-cold and thermal bridge node in Example 4;

[0105] Fig.11 Schematic diagram of the structure of the annular sealing plate in Example 4;

[0106] Fig.12 This is a schematic diagram of the arrangement of the restraining support members in Example 5;

[0107] Fig.13 for Fig.12 AA section view in;

[0108] Fig.14 It is a side view of the cross-shaped inner core;

[0109] Fig.15 for Fig.13 FF cross-sectional view in. DETAILED DESCRIPTION

[0110] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0111] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0112] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0113] The present invention is further explained below in conjunction with specific implementation modes.

[0114] Example 1

[0115] like Figure 1 As shown, a web-covered concrete composite member provided in this embodiment includes: a T-shaped steel-rebar truss composite hollow member 100, a steel bar skeleton 200, tie bars and concrete 300. The T-shaped steel-rebar truss composite hollow member 100 can be used as a beam or a column.

[0116] The T-steel-rebar truss composite hollow member 100 includes: an upper T-steel 110 , a lower T-steel 120 , an M-shaped steel bar 130 (or a wavy steel bar) and a stiffening steel plate 150 .

[0117] like Figure 2 As shown, the upper T-shaped steel 110 includes an upper flange 111 and an upper web 112; the lower T-shaped steel 120 includes a lower flange 121 and a lower web 122; the upper T-shaped steel 110 and the lower T-shaped steel 120 are opposite to each other and spaced apart from each other, and are arranged in an I-shape as a whole.

[0118] like Figure 1 As shown, in the length direction, the T-shaped steel-rebar truss composite hollow member 100 includes connection areas 101 at both ends and a prefabricated area 102 in the middle;

[0119] The stiffening steel plate 150 is vertically disposed at the junction of the connection area 101 and the prefabricated area 102 of the upper T-shaped steel 110 and the lower T-shaped steel 120 .

[0120] The reinforcing steel plate 150 is fixedly connected to the upper T-shaped steel 110 and the lower T-shaped steel 120 and encloses a prefabricated abdominal cavity in the prefabricated area; the prefabricated abdominal cavity includes a left prefabricated abdominal cavity 100a and a right prefabricated abdominal cavity 100b.

[0121] The M-shaped steel bar 130 is arranged in the prefabricated area 102. Figure 1 and 3As shown, the M-shaped steel bar 130 is wave-shaped and moves back and forth between the upper web 112 and the lower web 122. The M-shaped steel bar 130, the upper web 112 and the lower web 122 are welded to form a whole;

[0122] The left prefabricated abdominal cavity 100a and the right prefabricated abdominal cavity 100b are filled with concrete 300, and the steel bar skeleton 200 is embedded in the concrete 300.

[0123] The steel skeleton 200 includes a main stress-bearing reinforcement 210, and both ends of the main stress-bearing reinforcement 210 are respectively fixedly connected to the stiffening steel plate 150; specifically, the stiffening steel plate 150 is provided with reinforcement holes, and both ends of the main stress-bearing reinforcement 210 are provided with threaded sections, and after the threaded sections pass through the reinforcement holes, they are fixedly connected to the stiffening steel plate 150 using nuts 151.

[0124] The nut 151 is threadedly connected to the end of the stressed main reinforcement 210. The stressed main reinforcement 210 is fixed by tightening the nut, and the force borne by the stressed main reinforcement 210 is transmitted to the reinforcing steel plate 150 and the upper T-shaped steel 110 and the lower T-shaped steel 120, thereby realizing continuous force transmission.

[0125] like Figure 5 As shown, the steel skeleton 200 includes a left steel skeleton 200a arranged in the left prefabricated abdominal cavity, and a right steel skeleton 200b arranged in the right prefabricated abdominal cavity; the tie steel bars 400 pass through the gaps of the M-shaped steel bars 130 to fix the left steel skeleton 200a and the right steel skeleton 200b.

[0126] In addition, the steel frame 200 further includes: a stand steel bar 220 and a stirrup 230. Both ends of the tie steel bar 400 are connected to the stand steel bar 220 by binding.

[0127] The M-shaped steel bar 130 is formed by bending a round steel bar or a threaded steel bar. Figure 4 As shown, there are two groups of M-shaped steel bars 130 , and the two groups of M-shaped steel bars 130 are respectively attached to the left and right sides of the upper web 112 and the lower web 122 .

[0128] The upper T-shaped steel 110 and the lower T-shaped steel 120 are hot-rolled split T-shaped steels or welded T-shaped steels.

[0129] In this embodiment, the stiffening steel plate 150 includes a left stiffening portion and a right stiffening portion; the left stiffening portion is fixedly connected to the upper flange 111, the upper web 112, the lower flange 121 and the lower web 122, and encloses the left prefabricated abdominal cavity on the left side of the prefabricated area; the right stiffening portion is fixedly connected to the upper flange 111, the upper web 112, the lower flange 121 and the lower web 122, and encloses the right prefabricated abdominal cavity on the right side of the prefabricated area.

[0130] Among them, the length of the connection area is the length of the plastic hinge area under the action of earthquake, which is specified by the design, and can achieve seismic energy absorption by pure steel components in the connection area under the action of earthquake; the M-shaped steel bar 130 is interrupted outside the connection area; the reinforcing steel plates 150 are arranged on both sides of the prefabricated area.

[0131] like Figure 1 As shown, this embodiment also includes a repair welding steel plate 160 arranged in the connection area 101; the upper and lower ends of the repair welding steel plate 160 are respectively welded and fixed to the upper web 112 and the lower web 122 (the connection is a weld 600); and a plurality of connection holes are arranged on the repair welding steel plate 160. Among them, the upper T-shaped steel 110 and the lower T-shaped steel 120 are provided with connection holes at both ends and in the connection area. By welding the repair welding steel plate 160 and adding connection holes on the repair welding steel plate 160, the connection stiffness and strength of the composite component of the web outer concrete 300 and other butted components are improved.

[0132] The steps for processing the web plate outer concrete 300 composite component are as follows:

[0133] 1) Positioning and welding the upper T-shaped steel 110, the lower T-shaped steel 120 and the M-shaped steel bar 130, and welding and fixing the repair welding steel plate 160 to the upper T-shaped steel 110 and the lower T-shaped steel 120 to obtain a T-shaped steel-steel truss combined hollow member 100;

[0134] 2) The two processed steel bar skeletons 200 are respectively placed into the prefabricated abdominal cavity formed by the upper and lower flanges 121 and the web of the processed T-shaped steel-steel truss combined hollow member 100 and fixed in position;

[0135] 3) Pass the tie steel bar through the gap of the M-shaped steel bar 130 of the T-steel-steel truss composite hollow member 100, and tie and fix it with the steel bar skeleton 200 on both sides;

[0136] 4) Open holes in the reinforcing steel plate 150 and pass through the stress-bearing steel bars in the steel bar skeleton 200, and position weld them with the upper and lower T-shaped steels 120 and the repair welding steel plate 160;

[0137] 5) Use fastening nuts to fix the stressed steel bars on the stiffening steel plate 150;

[0138] 6) If Figure 6 As shown, the processed component (T-shaped steel-rebar truss combined hollow member 100) is placed sideways on a fixed formwork platform 500 and temporarily fixed, and then concrete 300 is poured and vibrated to make it dense;

[0139] 7) After the concrete has initially set for 300%, turn the component over, pour 300 of concrete on the other side, and vibrate to make it dense;

[0140] 8) Steam curing or natural curing to 300 design strength of concrete.

[0141] The web plate outer-wrapped concrete 300 composite component provided by the present invention has the following advantages:

[0142] 1) Good anti-corrosion and fireproof performance. The web plate is wrapped with concrete 300, which solves the problem of high anti-corrosion and fireproof costs of steel beams or columns, and greatly improves the durability of steel beams or columns;

[0143] 2) The production is standardized and the degree of automation is high. The T-shaped steel and the wavy steel bars are processed into the T-shaped steel bar truss combined hollow member 100 to achieve the standardization of component production, reduce the processing amount, and reduce the processing cost;

[0144] 3) Good mechanical performance and strong integrity. The hollow web structure connects the concrete 300 on both sides, greatly improving the integrity of the structure, and realizing the joint work of the steel beam or column and the outer concrete 300, which greatly improves the structural strength and rigidity and reduces the cost;

[0145] 4) Good seismic performance. A connection area is set at the end of the component. The length of the connection area is the length of the plastic hinge area under the action of an earthquake. The connection area is a seismic energy dissipation area. Pure steel components are used with good ductility and strong seismic performance.

[0146] 5) Easy to connect, can be fully bolted; full bolt connection can be achieved through the connection area and steel column, which is easy to connect.

[0147] In summary, the web-wrapped concrete 300 composite component and its composite structure building proposed in the present invention can give full play to the advantages of convenient steel structure connection and good seismic performance, while integrating the advantages of the steel-concrete 300 composite structure, and utilizing the combined effect of steel-concrete 300 to overcome the shortcomings of poor corrosion and fire resistance and weak rigidity of steel components, and realize standardized production of components, assembly construction, long-term durability, economic applicability and many other advantages, which greatly enhances the competitive advantage of steel structures and has broad application prospects in prefabricated buildings.

[0148] Example 2

[0149] The structure of this embodiment is basically the same as that of embodiment 1, except that:

[0150] like Figure 7As shown, the web-plate outer concrete composite component 3 is embedded in the wall 4 as a column; the web-plate outer concrete composite component 3 is coated with an anti-corrosion layer (not shown) on the outer side of the outer flange 3a close to the outside of the wall, and a glass wool board 10 is laid outside the anti-corrosion layer to block the web-plate outer concrete composite component from acting as a thermal bridge to transfer heat flow between the indoor and outdoor sides of the wall 4. On the projection plane parallel to the wall 4, the size of the glass wool board does not cover the entire wall 4, and the size of the glass wool board only covers all or part of the web-plate outer concrete composite component 3.

[0151] Different from the insulation board or insulation layer which is integrally arranged on the outside of the wall, the glass wool board in the present invention is arranged to block the heat bridge at the column and solve the problem of heat conduction at the local part of the column.

[0152] The present invention has remarkable thermal insulation effect and low cost. A glass wool board is laid on the outdoor side surface of the web-wrapped concrete composite component, thereby effectively reducing the heat transfer caused by the web-wrapped concrete composite component as a thermal bridge, eliminating the heat flow concentration on both sides of the wall 4 indoors and outdoors at the web-wrapped concrete composite component, and greatly improving the thermal insulation performance of the wall 4, so that the wall 4 can meet the requirements of 75% energy saving for residential buildings and a heat transfer coefficient of <0.45W / (m 2 K) green and energy-saving design requirements.

[0153] On a projection plane parallel to the wall 4 , the protruding outer flanges 3 a on the left and right sides of the glass wool board 10 are arranged and embedded on the wall 4 .

[0154] The glass wool board 10 is appropriately extended on the left and right sides of the outer flange 3a, further improving the blocking performance of the heat bridge heat transfer of the web outer concrete composite component, and improving the thermal insulation performance of the wall 4. The glass wool board 10 is embedded in the wall 4, and is not prone to edge lifting and bulging, and the installation is more secure.

[0155] And, in the thickness direction of the wall 4, two layers of glass wool boards are arranged on the outdoor side of the web-surface concrete composite component; the two adjacent layers of the glass wool boards include an inner layer of glass wool boards 11 close to the web-surface concrete composite component, and an outer layer of glass wool boards 12 away from the web-surface concrete composite component. On the projection plane parallel to the wall 4, the left and right sides of the outer layer of glass wool boards 12 protrude from the inner layer of glass wool boards 11; on the horizontal cross section of the wall 4, the two layers of glass wool boards are respectively embedded on the wall 4 in an inverted pyramid (stepped) shape.

[0156] On the horizontal cross section of the wall 4, several layers of the glass wool boards are arranged in a (inverted pyramid) stepped shape. The heat conduction efficiency of the web-wrapped concrete composite component is normally distributed, and the heat transfer amount in the central area facing the web-wrapped concrete composite component is the most intensive, which is the column thermal bridge area, while the heat transfer amount on the left and right sides gradually decreases, which are the thermal bridge influence areas. Several layers of the glass wool boards are arranged in an inverted pyramid shape on one side of the web-wrapped concrete composite component, so as to effectively block the heat transfer on the front of the web-wrapped concrete composite component and also block the heat scattering on both sides of the web-wrapped concrete composite component.

[0157] Furthermore, the glass wool panels are arranged in an inverted pyramid shape, and the left and right sides of each glass wool panel can be embedded in the wall 4, so that each glass wool panel can be guaranteed not to warp or bulge within the building life of several decades after installation. Under the premise of ensuring that the building energy-saving design standards are met, the building energy-saving cost is reduced. The present invention can be widely used in the field of external wall insulation of steel frame structures.

[0158] If a single-layer glass wool board is to achieve the same thermal bridge blocking effect, the thickness of the glass wool board needs to be increased. However, an overly thick glass wool board is often non-standard and needs to be customized by the manufacturer, which will increase the construction cost. In addition, an overly thick glass wool board is too heavy and inconvenient to install, and it is easy to fall off after installation. In addition, when a single-layer glass wool board meets the thermal bridge column insulation effect, there will be excessive insulation measures in the corresponding area of ​​the thermal bridge affected area, resulting in material waste.

[0159] The present application can flexibly use 2-6 layers of conventional glass wool boards according to design requirements, and the thickness of each layer of glass wool boards is greatly reduced, which is convenient for installation. After installation, the glass wool boards are not easy to fall off and are more stable. In addition, there is no excessive waste of materials, which is a green and energy-saving construction method.

[0160] In the above embodiment, more preferably, the number of layers of the glass wool board is 3-4, and the width of the outer flange 3a and the width of the 3-4 layers of glass wool board are arranged in geometric progression, wherein the ratio range is preferably 1.6-2. Taking the 3-layer glass wool board as an example, the width of the inner glass wool board is 1.6-2 times the width of the outer flange 3a, the width of the middle glass wool board is 1.6-2 times the width of the inner glass wool board, and the width of the outer glass wool board is 1.6-2 times the width of the middle glass wool board. The heat transfer coefficient of the steel column area is <0.1W / (m 2 ·K), while the material of glass wool board can save 42% on average and the economic cost can save 63%.

[0161] The inner glass wool board 11 is laid on the outer side of the outer flange 3a and the wall 4 by using adhesive. The outer glass wool board 12 is laid on the inner glass wool board 11 and the wall 4 by using adhesive 5.

[0162] In addition, a connecting anchor bolt is provided between the wall 4 and the glass wool board, and the glass wool board is further fastened by the connecting anchor bolt after being attached to the wall by adhesive. The glass wool board is fixed by both adhesive and anchor bolt to ensure the overall performance of the insulation layer and the wall.

[0163] The flange close to the indoor side of the web-wrapped concrete composite member is the inner flange 3b, and the outer end surface of the inner flange 3b is coated with an anti-corrosion layer (not shown); and no insulation material is applied on the outer side of the anti-corrosion layer of the inner flange.

[0164] Since the indoor temperature and humidity do not change much and are relatively stable, it is beneficial for the anti-corrosion layer to remain effective for a long time. The thermal bridge effect of the web-wrapped concrete composite component itself is utilized, and the glass wool board outside the outer flange blocks the thermal bridge, thereby greatly reducing the temperature fluctuations at the outer flange anti-corrosion layer, thereby more effectively extending the effective life of the anti-corrosion layer, thereby improving the anti-corrosion performance of the web-wrapped concrete composite component as a whole.

[0165] Example 3

[0166] This embodiment discloses a composite structure building, such as Figure 8 As shown, it includes: beams (not shown), columns 30, shear walls 40 and floor slabs (not shown).

[0167] The column 30 is composed of a web-surface concrete composite member in Embodiment 1 or 2. A shear wall 40 is arranged between two columns 30 .

[0168] The shear wall 40 includes a wall body and a wall connector 43 disposed in the wall body; the wall body includes an inner plate 41 and an outer plate 42 spaced apart along the thickness direction thereof; end plates 45 are disposed at both ends of the inner plate 41 and the outer plate 42, and are fixedly connected to the first side steel plate and the second side steel plate on the column 30 through the end plates 45. In order to avoid the thermal bridge effect, the end plates may be omitted, and the inner plate and the outer plate may be directly connected to the side steel plates on the column.

[0169] A plurality of through holes are arranged on the wall connector 43 along the thickness direction of the wall; the two ends of the wall connector 43 are respectively fixedly connected to the inner panel 41 and the outer panel 42; and the wall connector 43 is made of fiber reinforced composite material, and the wall, i.e., between the inner panel 41 and the outer panel 42, is filled with insulation material 44.

[0170] The composite structure building of the present invention is provided with a wall connector 43 in the shear wall 40, and a through hole is provided on the wall connector 43. On the basis of realizing the anti-buckling function of the shear wall 40, the weight of the shear wall 40 is reduced, and it is convenient to flip, carry and hoist on site. At the same time, the shear wall 40 has reasonable force and reliable performance, can be processed and formed in the factory, and the processing is simple, and no on-site compounding is required, which reduces the on-site workload and improves the connection efficiency. In addition, the wall connector 43 is made of fiber-reinforced composite material, and the wall is filled with thermal insulation material 44, which further improves the thermal insulation performance of the wall and the entire building.

[0171] The wall connector 43 may be a plurality of spaced connection pipes, or a connection plate with a honeycomb cross section. The ends of the wall connector 43 are preferably connected to the inner plate 41 and the outer plate 42 via connection feet, and the connection feet are used to increase the connection area between the wall connector 43 and the inner plate 41 and the outer plate 42. The wall connector 43 is bonded to the connection feet using resin.

[0172] Example 4

[0173] This embodiment discloses a combined structure building, which is basically the same as the embodiment 3, except that:

[0174] like Fig. 9 As shown, in the horizontal projection plane, the floor 50 of the composite structure building includes a floor slab 51 arranged indoors and a cantilever slab 52 arranged outdoors; the floor slab 51 and the cantilever slab 52 are connected by an anti-cold and thermal bridge node 53.

[0175] like Fig.10 and 11 As shown, the anti-cold and thermal bridge node 53 includes a sandwich plate, a first steel bar pad 53c and a second steel bar pad 53d; the sandwich plate includes a first metal panel 53a, a second metal panel 53b, a plurality of node connectors 56, an annular sealing plate 54 and a thermal insulation material 55 (i.e., thermal insulation material); the annular sealing plate 54 is fixedly connected between the first metal panel 53a and the second metal panel 53b that are arranged opposite to each other, and is surrounded by the first metal panel 53a and the second metal panel 53b to form a sealed cavity; one end of the node connector 56 is fixedly connected to the first metal panel 53a, and the other end is fixedly connected to the second metal panel 53b, and is arranged in the sealed cavity; the thermal insulation material is filled in the sealed cavity.

[0176] A first steel bar pad 53c is welded to the surface of the first metal panel 53a facing away from the second metal panel 53b, and a plurality of floor steel bars 53e extending toward the inside of the room and entering the floor are welded to the first steel bar pad 53c; the floor steel bars 53e are overlapped or welded to the steel bar skeleton in the floor.

[0177] A second steel plate 53d is welded to the surface of the second metal panel 53b on one side away from the first metal panel 53a, and a plurality of cantilever plate steel bars 53f extending toward the outside and entering the cantilever plate are welded to the second steel plate 53d. The cantilever plate steel bars 53f are overlapped or welded to the steel bar skeleton in the cantilever plate. The cantilever plate can be a cantilever balcony, a cantilever air conditioning panel, a rain shield, or other components.

[0178] Preferably, the node connector 56 is a connecting pipe, a connecting rod, a honeycomb plate or a corrugated plate; when the node connector 56 is a connecting pipe, the connecting pipe is filled with a heat insulating material. More preferably, the node connector 56 and the annular sealing plate 54 are made of fiber reinforced composite material or plastic. Among them, the heat insulating material is rock wool or foamed polyurethane.

[0179] In the above technical solution, preferably, the first metal panel 53a is a carbon structural steel plate, a low alloy high strength structural steel plate or a stainless steel plate; the second metal panel 53b is a carbon structural steel plate, a low alloy high strength structural steel plate or a stainless steel plate.

[0180] like Fig.11 As shown, the annular sealing plate 54 includes a bottom sealing plate, a first side sealing plate, a top sealing plate and a second side sealing plate which are connected end to end in the circumferential direction; 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.

[0181] During construction, the first metal panel 53a, the second metal panel 53b, the node connector 56 and the annular sealing plate 54 are fixedly connected together, and a process hole is reserved on the annular sealing plate 54; steel bar pads are welded on the first metal panel 53a and the second metal panel 53b respectively; steel bars are welded on each steel bar pad; the steel bars located on one side of the first metal panel 53a or the second metal panel 53b are placed in the formwork (floor or cantilever formwork); the steel bars are tied to the steel bars in the formwork to form a steel skeleton; concrete is poured into the formwork; insulation material is filled into the sealed cavity through the process hole and squeezed densely; the process hole is sealed to form a prefabricated component with an anti-cold and hot bridge node 53 for the floor.

[0182] The anti-cold and heat bridge node 53 of the floor structure of the present invention has the characteristics of simple construction and small on-site workload; rock wool, foamed polyurethane and other insulating materials are filled in the middle of the sandwich panel, and at the same time, the insulating material is embedded in the sealed cavity of the sandwich panel to avoid the formation of thermal bridges in the sandwich panel, that is, a broken bridge structure is formed between the floor slabs and the cantilever slabs on both sides of the indoor and outdoor areas, so that the thermal insulation effect is good, the thermal insulation material is durable and there is no risk of falling off; the steel bars are welded to the metal panels through steel bar pads, and a plurality of node connectors 56 are fixed between the metal panels, so that the anti-cold and heat bridge node 53 has high structural strength and good force-bearing performance.

[0183] Example 5

[0184] This embodiment discloses a combined structure building, which is basically the same as Embodiment 3 or 4, except that:

[0185] like Fig.12 As shown, the combined structure building includes a restraining support member 60; both ends of the restraining support member 60 are fixedly connected to the middle part of the column and the middle part of the beam respectively.

[0186] like Fig.13 As shown, the restraint support 60 includes an outer restraint sleeve 61 and an inner core 62 , a restraint ring 63 and a restraint rod 64 , all of which are disposed in the outer restraint sleeve.

[0187] The restraining rod 64 and the inner core 62 are both arranged along the length direction of the outer restraining sleeve. The restraining ring 63 is fixed to the outer restraining sleeve and is sleeved outside the inner core 62 and the restraining rod 64 to fix the inner core 62 and the restraining rod 64.

[0188] like Fig.13 As shown, the inner core 62 is in the shape of a long strip; restraining rods 64 are provided on both sides of the inner core 62; or, as shown in FIG. Fig.14 As shown, the inner core 62 is in the shape of a long strip with a cross-shaped cross section, and restraint rods 64 are provided at four intervals of the cross.

[0189] The constraint ring 63 includes a plurality of annular constraint steel bars sleeved outside the inner core 62 and the constraint rod 64; the plurality of annular constraint steel bars are arranged in sequence along the length direction of the constraint rod 64. In addition, the constraint ring 63 can also be an annular constraint steel bar spirally wound outside the inner core 62. The annular constraint steel bar is preferably a plain round steel bar. The constraint rod 64 is preferably a steel bar; the steel bar is welded and fixed to the plain round steel bar. An anti-friction layer is provided between the constraint rod 64 and the inner core 62 to reduce the friction resistance between the constraint rod 64 and the inner core 62.

[0190] like Fig.15 As shown, the outer restraining sleeve 61 includes a mortar layer 61a, and a reinforcement structure is provided in the mortar layer 61a; the reinforcement structure is a steel mesh 61b (or a glass fiber mesh); the steel mesh is arranged along the circumference of the outer restraining sleeve.

[0191] like Fig.12 As shown, the two ends of the inner core 62 are respectively provided with connecting ends 65 extending out of the outer constraint sleeve; the width of the connecting ends is greater than the width of the inner core 62 in the outer constraint sleeve (the middle width of the inner core 62); and mounting holes are provided on the connecting ends. The constraint support is connected to the crossbeam and the column through the mounting holes on the connecting ends.

[0192] The buckling restraint support in the present invention, the restraint rod 64 and the restraint ring 63 restrain the buckling of the inner core 62, and limit the local buckling of the inner core 62, so that the performance of the core plate can be fully exerted. At the same time, during processing, it is only necessary to put the restraint ring 63 on the outside of the inner core 62 and the restraint rod 64 for fixing, which has low requirements. This operation does not require special factory processing, so it is simple to process and easy to operate. The restraint rod 64 is made of steel rod, the inner core 62 is made of steel core, and the restraint ring 63 is made of plain round steel bar, which are all commonly used materials, low cost, and good economy. The outer restraint sleeve is made of mortar to avoid rusting of the anti-buckling support and is maintenance-free during the service life.

[0193] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements 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 web-covered concrete composite member, characterized in that: include: T-steel-rebar truss combined hollow members, steel skeleton, tie bars and concrete; The T-steel-rebar truss composite hollow member comprises: an upper T-steel, a lower T-steel, an M-shaped steel bar and a stiffening steel plate; The upper T-shaped steel comprises an upper flange and an upper web; The lower T-shaped steel comprises a lower flange and a lower web; The upper T-shaped steel and the lower T-shaped steel are arranged vertically opposite to each other and spaced apart, and are arranged in an I-shaped shape as a whole; In the length direction, the T-shaped steel-rebar truss composite hollow member includes connection areas at both ends and a prefabricated area in the middle; The stiffening steel plate is vertically arranged at the junction of the connection area of ​​the upper T-shaped steel and the lower T-shaped steel and the prefabricated area; The reinforcing steel plate is fixedly connected to the upper T-shaped steel and the lower 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 arranged in the prefabricated area, the M-shaped steel bar moves back and forth between the upper web and the lower web in a wave-like manner, and the upper web and the lower web of the M-shaped steel bar are welded to form a whole; The prefabricated abdominal cavity is filled with concrete, and the steel bar skeleton is embedded in the concrete; The steel reinforcement skeleton comprises main stress-bearing reinforcements, and both ends of the main stress-bearing reinforcements are respectively fixedly connected to the reinforcing steel plates; The steel reinforcement skeleton comprises a left steel reinforcement skeleton arranged in the left prefabricated abdominal cavity, and a right steel reinforcement skeleton arranged in the right prefabricated abdominal cavity; The tie steel bars pass through the M-shaped steel bar gaps to fix the left steel bar skeleton and the right steel bar skeleton in connection.

2. The web-surface concrete composite member according to claim 1, characterized in that: The reinforcing steel plate is provided with steel bar holes, and both ends of the main force-bearing bars are provided with threaded sections. After the threaded sections pass through the steel bar holes, they are fixedly connected to the reinforcing steel plate by nuts.

3. The web-surface concrete composite member according to claim 1, characterized in that: The steel frame also includes: stand bars and stirrups.

4. The web-surface concrete composite member according to claim 1, characterized in that: The M-shaped steel bar is formed by bending a plain round steel bar or a threaded steel bar.

5. The web-surface concrete composite member according to claim 1, characterized in that: The tie steel bars are fixedly connected to the left steel bar skeleton and the right steel bar skeleton by binding.

6. The web-plate-outer-concrete composite member according to claim 1, characterized in that: The stiffening steel plate comprises a left stiffening portion and a right stiffening portion; The left stiffening part is fixedly connected to the upper flange, the upper web, the lower flange and the lower web and encloses the left prefabricated abdominal cavity on the left side of the prefabricated area; The right stiffening part is fixedly connected to the upper flange, the upper web, the lower flange and the lower web, and encloses the right prefabricated abdominal cavity on the right side of the prefabricated area.

7. The web-surface concrete composite member according to claim 1, characterized in that: The upper T-shaped steel and / or the lower T-shaped steel are hot-rolled split T-shaped steel or welded T-shaped steel.

8. The web-surface concrete composite member according to claim 1, characterized in that: It also includes a repair welded steel plate arranged in the connection area; the upper and lower ends of the repair welded steel plate are respectively welded and fixed to the upper web and the lower web; and the repair welded steel plate is provided with a plurality of connection holes.

9. A composite structural building with a web-wrapped concrete composite member according to any one of claims 1 to 8, characterized in that: include: Beams, columns, shear walls and floor slabs; The column is composed of a composite member with concrete wrapped around the web; The shear wall comprises a wall body and a wall connecting member arranged in the wall body; the wall comprises an inner plate and an outer plate arranged at intervals along the thickness direction thereof; The wall connector is provided with a plurality of through holes along the thickness direction of the wall; the two ends of the wall connector are fixedly connected to the inner plate and the outer plate respectively; and the wall connector is made of fiber reinforced composite material, and the wall is filled with heat insulation material.

10. The web-plate-outer-concrete composite member according to claim 9, characterized in that: The wall connecting piece is a plurality of connecting pipes arranged at intervals, or a connecting plate with a honeycomb-shaped cross section.

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