CN206928427U - A dry assembled ECC protective layer node structure - Google Patents

Abstract

The utility model discloses a dry-type assembled ECC protective layer node structure, it includes node main body, left side crossbeam, right side crossbeam, upper end vertical column, lower extreme vertical column, the node main body includes internal shaped steel, welds the upper and lower extreme connecting plate and the left and right side overhanging connecting plate of the node of internal shaped steel, pours self-compaction fiber concrete in the shaped steel filling cavity of internal shaped steel, pours ECC outsourcing protective layer in the internal shaped steel periphery; four longitudinal column connecting bolts are arranged on the periphery of the internal profile steel, and connecting longitudinal ribs are embedded in ECC reserved longitudinal rib holes of the ECC outer protective layer; the left and right cross beams are respectively filled with cross beam longitudinal ribs and cross beam steel plates, the lower end face of the upper longitudinal column is provided with an upper longitudinal column connecting plate, and the upper end face of the lower longitudinal column is provided with a lower longitudinal column connecting plate. The utility model discloses can realize the full assembly construction of node district component, the construction precision is high and the required cost of labor of construction is low, and energy-concerving and environment-protective effectual and can effectively reduce produced pollution, dust of site operation, and anti-seismic performance is good.

Description

A dry assembled ECC protective layer node structure

technical field

The utility model relates to the technical field of prefabricated buildings, in particular to a dry prefabricated ECC protective layer node structure.

Background technique

With the vigorous promotion of building industrialization, compared with traditional cast-in-place structures, prefabricated structures have the advantages of high construction efficiency, good economic benefits, energy saving and environmental protection, and have become an effective way to realize industrialized production; however, traditional prefabricated buildings The integrity and seismic performance are poor, and the damage is serious during an earthquake. For traditional prefabricated structures, due to the weak connection between components, resulting in poor integrity and poor seismic performance, the application of prefabricated structures in anti-seismic fortified areas is hindered.

Traditional prefabricated structural nodes are divided into two construction methods: cast-in-place and fully-fabricated. The cast-in-place construction volume is large and the quality is difficult to guarantee; the fully-fabricated type includes partial grouting and steel anchorage measures, which has a long maintenance period and a large amount of on-site work. The connection methods of traditional prefabricated structures in the joint area usually include dry and wet connection methods. The dry connection is usually connected by bolt connection and welding of embedded steel members; the wet connection usually appears in the concrete structure. Through the joint After pouring and curing the concrete in the area to connect; or grouting and anchoring steel bars through reserved grouting openings, the amount of on-site operations is large, and the construction quality is difficult to guarantee. Through the actual application of traditional prefabricated structures and the analysis of damage forms in earthquakes, it can be seen that traditional prefabricated structures, especially the node area, have the following problems:

1. The prefabricated joint area of the traditional reinforced concrete structure is cast-in-place or grouted and anchored, which does not fully reflect the advantages of the prefabricated structure such as convenient construction and short installation period;

2. The seismic performance evaluation system of fully assembled prefabricated nodes is not perfect;

3. For traditional prefabricated nodes, the connection mode of the node area is mostly cast-in-place at the construction site, which affects the construction quality of the prefabricated nodes, which is difficult to guarantee on-site construction quality and affects the construction period;

4. The wet connection method causes local concrete color deviation and concrete fault feeling is obvious;

5. Realize the full assembly construction of the components in the node area, the factory prefabrication is energy-saving and environmentally friendly, and reduces the pollution and dust of on-site construction.

Utility model content

The purpose of the utility model is to provide a dry assembled ECC protective layer node structure for the deficiencies of the prior art. The dry assembled ECC protective layer node structure can realize the full assembly construction of the components in the node area, and the prefabricated production of all components. The construction precision is high and the labor cost required for construction is low, the energy saving and environmental protection effect is good, and the pollution and dust generated by on-site construction can be effectively reduced, and the anti-seismic performance of the dry-assembled ECC protective layer node structure can reach the anti-seismic performance of cast-in-place nodes. Good stability and reliability.

In order to achieve the above object, the utility model is realized through the following technical solutions.

A dry assembled ECC protective layer node structure, comprising a node body, a left beam located at the left end of the node body, a right beam located at the right end of the node body, an upper vertical column located at the upper end of the node body, and a The lower longitudinal column on the lower end side, the left beam and the right beam respectively extend horizontally along the horizontal direction, and the upper longitudinal column and the lower longitudinal column respectively extend along the vertical direction;

The main body of the node includes internal section steel arranged vertically. The core of the internal section steel is formed with a section steel filling chamber that completely penetrates up and down. The section steel filling chamber of the internal section steel is poured with self-compacting fiber concrete. The upper opening of the chamber is welded with a horizontally arranged node upper end connecting plate, and the lower end surface of the inner section steel is welded with a horizontally transversely arranged node lower end connecting plate at the lower opening of the section steel filled chamber, and the outer periphery of the inner section steel An ECC outsourcing protective layer is poured between the connection plate at the upper end of the node and the connection plate at the lower end of the node. The left side of the internal section steel is welded with a left-side overhanging connection plate that is vertically arranged and protrudes horizontally toward the left. The internal section steel The right side of the right side is welded with a right side overhanging connection plate that is vertically arranged and protrudes horizontally beyond the right side, and the left end of the left side overhanging connection plate passes through the ECC outer protective layer and extends to the ECC outer protective layer. On the left end side, the right end of the right side extended connecting plate passes through the ECC outer protective layer and extends to the right end side of the ECC outer protective layer;

The periphery of the internal section steel is equipped with four longitudinal column connecting bolts distributed in a rectangular shape and extending vertically. Each longitudinal column connecting bolt is located inside the ECC outer protective layer, and the upper ends of each longitudinal column connecting bolt pass through the upper end of the node. The connecting plate extends to the upper side of the connecting plate at the upper end of the node, and the lower ends of the connecting bolts of each longitudinal column respectively pass through the connecting plate at the lower end of the node and extend to the lower end of the connecting plate at the lower end of the node;

Inside the ECC outsourcing protection layer, there are four ECC reserved longitudinal rib holes distributed in a rectangular shape and vertically completely penetrating on the periphery of the upper connection plate of the node and the lower connection plate of the node. Each ECC reserved longitudinal rib hole is respectively embedded with The connecting longitudinal ribs arranged vertically, the upper end of each connecting longitudinal rib extends to the upper end side of the upper connecting plate of the node respectively, and the lower end of each connecting longitudinal rib extends respectively to the lower end side of the connecting plate at the lower end of the node;

The inside of the left beam and the right beam are respectively filled with longitudinal ribs extending horizontally along the horizontal direction; The longitudinal ribs of the side beams are welded to the steel plates of the left beams, the longitudinal ribs of the right beams are welded to the steel plates of the right beams, and the connecting end of the left beams has an opening facing the right and its shape is protruding from the left side. The connecting hole is reserved on the left with matching shape of the connecting plate, and the connecting end surface of the right cross beam is provided with a reserved connecting hole on the right opening to the left and matching the shape of the extending connecting plate on the right. The overhanging connecting plate is embedded in the left reserved connecting hole of the left crossbeam, the right overhanging connecting plate is embedded in the right reserved connecting hole of the right crossbeam, and the left overhanging connecting plate and the left crossbeam The crossbeam steel plate connected by bolt fastening and the bolt passing through the left crossbeam, the right side overhanging connecting plate and the right crossbeam are fastened by bolts and the bolt passes through the crossbeam steel plate of the right crossbeam;

The lower end surface of the upper longitudinal column is equipped with an upper longitudinal column connecting plate, and the upper end surface of the lower longitudinal column is equipped with a lower longitudinal column connecting plate. Bolt installation holes, the upper ends of the connecting bolts of each longitudinal column respectively pass through the corresponding bolt installation holes of the connecting plate of the upper longitudinal column and extend to the upper side of the connecting plate of the upper longitudinal column, the lower ends of the connecting bolts of each longitudinal column respectively pass through the lower longitudinal The corresponding bolt installation holes of the column connecting plate extend to the lower end side of the lower longitudinal column connecting plate. The upper ends of the connecting bolts of each longitudinal column are fitted with nuts respectively and the connecting plate of the upper longitudinal column and the connecting plate at the upper end of the node are clamped by nuts. The lower ends of the connecting bolts are matched with nuts respectively, and the connecting plate of the lower longitudinal column and the connecting plate of the lower end of the node are clamped by nuts;

The upper longitudinal column and the lower longitudinal column are respectively provided with reserved longitudinal reinforcement holes for each connecting longitudinal reinforcement, and the lower ends of each connecting longitudinal reinforcement are respectively embedded in the corresponding longitudinal reinforcement holes of the lower vertical column. The upper ends of the longitudinal ribs are respectively inserted into the corresponding longitudinal rib holes of the upper longitudinal columns.

Wherein, the outer surface of the internal section steel is welded with studs.

Wherein, each of the beam steel plates is respectively welded with studs.

Wherein, the lower end surface of the upper vertical column and the upper end surface of the lower vertical column are respectively provided with wrench avoidance grooves at the nut installation positions.

The beneficial effects of the utility model are: a dry assembled ECC protective layer node structure described in the utility model, which includes a node body, a left beam, a right beam, an upper vertical column, and a lower vertical column, and the node body includes Internal section steel, welded on the upper and lower end connection plates of the internal section steel nodes, and the left and right side extension connection plates, the self-compacting fiber concrete is poured in the section steel filling chamber of the internal section steel, and the ECC outer protective layer is poured on the periphery of the internal section steel; Four longitudinal column connecting bolts are installed, and the ECC reserved longitudinal reinforcement hole of the ECC outer protective layer is embedded with the connecting longitudinal reinforcement; the inside of the left and right beams are respectively filled with beam longitudinal reinforcement and beam steel plate, and the left and right sides are extended and connected The plates are respectively connected to the left and right beams on the corresponding side by bolts; The upper and lower longitudinal column connecting plates on the side are connected by bolts. The utility model can realize the full assembly construction of the components in the node area, the prefabricated production of all the components, the construction precision is high, the labor cost required for the construction is low, the energy saving and environmental protection effect is good, and the pollution and dust generated by the on-site construction can be effectively reduced, and the dry assembly The anti-seismic performance of the type ECC protective layer node structure can reach the anti-seismic performance of the cast-in-place node, and the stability and reliability are good.

Description of drawings

The utility model is further described below using the drawings, but the embodiments in the drawings do not constitute any limitation to the utility model.

Figure 1 is a schematic diagram of the assembly of the utility model.

Fig. 2 is an exploded schematic diagram of the utility model.

Fig. 3 is a structural schematic diagram of the utility model.

In Figures 1 to 3 include:

1——Nodal body 11——Internal section steel

111——section steel filling chamber 12——connection plate at upper end of node

13——Connection plate at the lower end of the node 14——ECC outsourcing protective layer

15——Left extended connecting plate 16——Right extended connecting plate

17——Longitudinal column connecting bolt 18——Connecting longitudinal reinforcement

21——Left beam 22——Right beam

23——Beam longitudinal reinforcement 24——Beam steel plate

31——upper longitudinal column 32——lower longitudinal column

33——Connecting plate of upper longitudinal column 34——Connecting plate of lower longitudinal column

35——Wrench avoidance groove 4——Peg.

detailed description

The utility model will be described below in conjunction with specific embodiments.

As shown in Figures 1 to 3, a dry-type assembled ECC protective layer node structure includes a node body 1, a left beam 21 located at the left end of the node body 1, and a right beam 22 located at the right end of the node body 1 , the upper longitudinal column 31 located at the upper end side of the node main body 1, the lower longitudinal column 32 located at the lower end side of the node main body 1, the left side beam 21 and the right side beam 22 extend laterally along the horizontal direction respectively, the upper end vertical column 31, the lower end vertical column 32 respectively extend along the vertical direction.

Among them, the node main body 1 includes internal section steel 11 arranged vertically, the core of the internal section steel 11 is formed with a section steel filling chamber 111 that completely penetrates up and down, and the section steel filling chamber 111 of the internal section steel 11 is poured with self-compacting fiber concrete The upper end surface of the internal section steel 11 is welded with a node upper end connecting plate 12 arranged horizontally and transversely at the upper end opening of the section steel filling chamber 111, and the lower end surface of the internal section steel 11 is welded with the bottom opening of the section steel filling chamber 111. The lower connecting plate 13 of the node is arranged horizontally and horizontally. The outer periphery of the internal section steel 11 is poured with an ECC outsourcing protective layer 14 between the upper connecting plate 12 and the lower connecting plate 13 of the node. The left side of the internal section steel 11 is welded with a vertical The left side overhanging connecting plate 15 arranged horizontally and protruding toward the left side is arranged, and the right side of the internal section steel 11 is welded with a right side overhanging connecting plate 16 arranged vertically and protruding horizontally beyond the right side. The left end of the left outwardly extending connecting plate 15 passes through the ECC outer protective layer 14 and extends to the left end side of the ECC outer protective layer 14, and the right end of the right outwardly extending connecting plate 16 passes through the ECC outer protective layer 14 and extends to the ECC. The right end side of the outer covering protective layer 14 .

Further, the outer periphery of the internal section steel 11 is equipped with four vertical column connecting bolts 17 distributed in a rectangular shape and extending vertically respectively. The upper ends of the upper end connecting plates 12 of the nodes respectively pass through the upper end connecting plates 12 of the nodes and extend to the upper end side of the upper connecting plates 12 of the nodes, and the lower ends of the connecting bolts 17 of each vertical column respectively pass through the lower connecting plates 13 of the nodes and extend to the lower ends of the lower connecting plates 13 of the nodes side.

Furthermore, the inside of the ECC outer protective layer 14 is provided with four ECC reserved longitudinal reinforcement holes in a rectangular distribution and vertically completely penetrating on the periphery of the node upper connection plate 12 and the node lower connection plate 13, and each ECC reserves a longitudinal reinforcement hole. Vertically arranged connecting longitudinal ribs 18 are respectively embedded in the rib holes, the upper ends of each connecting longitudinal rib 18 respectively extend to the upper end side of the connecting plate 12 at the upper end of the node, and the lower ends of each connecting longitudinal rib 18 respectively extend to the lower end of the node The lower end side of the connecting plate 13 .

In addition, the insides of the left side beam 21 and the right side beam 22 are respectively filled with beam longitudinal ribs 23 extending transversely along the horizontal direction, and the insides of the connecting ends of the left side beam 21 and the right side beam 22 are filled with vertical ribs 23 respectively. The beam steel plate 24 that arranges, the beam longitudinal rib 23 of the left side beam 21 is welded with the beam steel plate 24 of the left side beam 21, the beam longitudinal rib 23 of the right side beam 22 is welded with the beam steel plate 24 of the right side beam 22, and the left side beam The connection end face of 21 is provided with the left reserved connection hole that opens toward the right side and the shape matches with the shape of the left side overhanging connection plate 15. The right side reserved connection hole matching the shape of the overhanging connecting plate 16, the left side extending connecting plate 15 is embedded in the left reserved connecting hole of the left crossbeam 21, and the right side extending connecting plate 16 is embedded In the connecting hole reserved on the right side of the right crossbeam 22, the left overhanging connecting plate 15 and the left crossbeam 21 are fastened and connected by bolts and the bolts pass through the crossbeam steel plate 24 of the left crossbeam 21, and the right overhanging connecting plate 16 and the right cross beam 22 are fastened and connected by bolts and the bolts pass through the cross beam steel plates 24 of the right cross beam 22 .

The upper end surface of the upper longitudinal column 31 is provided with an upper end vertical column connection plate 33, and the upper end surface of the lower end vertical column 32 is equipped with a lower end vertical column connection plate 34. The upper end vertical column connection plate 33 and the lower end vertical column connection plate 34 correspond to the The column connecting bolts 17 are respectively provided with bolt mounting holes, and the upper ends of each vertical column connecting bolt 17 respectively pass through the corresponding bolt mounting holes of the upper longitudinal column connecting plate 33 and extend to the upper end side of the upper longitudinal column connecting plate 33. The lower ends of the connecting bolts 17 respectively pass through the corresponding bolt mounting holes of the lower longitudinal column connecting plate 34 and extend to the lower end side of the lower longitudinal column connecting plate 34. The upper ends of the connecting bolts 17 of each longitudinal column are fitted with nuts respectively and the upper longitudinal columns are connected to each other. The plate 33 is clamped with the upper end connecting plate 12 of the node by nuts, the lower ends of the connecting bolts 17 of each vertical column are fitted with nuts respectively and the connecting plate 34 of the lower vertical column is clamped with the lower connecting plate 13 of the node by nuts.

The upper longitudinal column 31 and the lower longitudinal column 32 are respectively provided with reserved longitudinal rib holes corresponding to the connecting longitudinal ribs 18, and the lower ends of each connecting longitudinal rib 18 are respectively inserted into the corresponding reserved longitudinal ribs of the lower longitudinal column 32. In the holes, the upper ends of the connecting longitudinal ribs 18 are respectively inserted into the corresponding longitudinal rib holes of the upper vertical column 31 .

Further explanation is needed, the outer surface of the internal section steel 11 is welded with studs 4 , and each beam steel plate 24 is welded with studs 4 respectively. In addition, the lower end surfaces of the upper vertical column 31 and the upper end surface of the lower vertical column 32 are respectively provided with wrench avoidance grooves 35 at the nut installation positions.

For the node main body 1 of the present utility model, it utilizes internal section steel 11, node upper end connecting plate 12, node lower end connecting plate 13, left side overhanging connecting plate 15, right side overhanging connecting plate 16 to weld and manufacture, internal section steel 11 Self-compacting fiber concrete is poured in the section steel filled chamber 111 to form constrained concrete. Self-compacting fiber concrete can effectively improve the overall stiffness of the node body 1 and increase the deformation capacity of the node body 1; As far as the peripheral ECC outsourcing protection layer 14 is concerned, it serves as the peripheral protection structure of the node main body 1, and can effectively avoid corrosion of the internal section steel 11, the connecting bolts 17 of the longitudinal columns, and the connecting longitudinal ribs 18, so as to improve the service life and safety of the node components degree, and increase the ductility and deformation capacity of the joint area. For the connecting longitudinal ribs 18 embedded in the reserved longitudinal rib holes of the ECC, it can effectively improve the integrity between the upper longitudinal column 31 and the lower longitudinal column 32 , thereby improving the overall strength. In addition, the left end beam and the left outrigger connecting plate, the right end beam and the right outrigger connecting plate, the upper longitudinal column connecting plate 33 and the node upper end connecting plate 12, the lower longitudinal column connecting plate 34 and the node lower end connecting plate 13 are bolted respectively. The connection and assembly are convenient and fast, which can effectively shorten the on-site construction period.

Specifically, compared with traditional reinforcement methods, the utility model has the following advantages, specifically:

1. Beam-joints and column-joints are all bolted dry connections, improving construction accuracy, shortening the construction period, reducing labor costs, and realizing a true assembled node component;

2. Self-compacting fiber concrete is poured in the internal section steel 11 in the core area of the node to form a confined concrete area and improve the stiffness and ductility of the node;

3. ECC, a high-toughness fiber cement-based material, is poured on the outside of the internal section steel 11 in the node area to form an ECC outsourcing protective layer 14. The ECC outsourcing protective layer 14 can improve the energy consumption capacity of the node, form an efficient protective layer, and prevent corrosion. node lifetime;

4. The outer surface of the internal section steel 11 and the steel plates 24 of each beam are welded with studs 4, which can effectively improve the performance of cooperating with concrete;

5. The ECC reserved longitudinal reinforcement holes for inserting and inserting the longitudinal reinforcement 18 are reserved on the outer side of the internal section steel 11, which can effectively improve the integrity of the joint area and facilitate construction and installation;

6. The beam-node connection is bolted through reserved connection holes, which improves the reliability of the connection and shortens the on-site construction period;

7. The column-node connection is connected by bolts, which improves the reliability of the connection and shortens the on-site construction period;

8. The upper vertical column 31 and the lower vertical column 32 respectively reserve a wrench avoidance groove 35 to provide a wrench working space to facilitate node installation and later maintenance.

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. The content of this specification should not be understood as Limitations on the Invention.

Claims (4)

1. A dry-assembled ECC protective layer node structure, characterized in that it includes a node body (1), a left beam (21) located at the left end of the node body (1), and a left beam (21) located at the right end of the node body (1). The right beam (22), the upper longitudinal column (31) located at the upper end side of the node main body (1), the lower end longitudinal column (32) located at the lower end side of the node main body (1), the left beam (21), the right beam (22) respectively extend horizontally along the horizontal direction, and the upper end vertical column (31) and the lower end vertical column (32) respectively extend along the vertical direction; The node main body (1) includes vertically arranged internal profiled steel (11), the core of the internal profiled steel (11) is formed with a profiled steel filling chamber (111) completely penetrating up and down, and the profiled steel filled cavity of the internal profiled steel (11) (111) is poured with self-compacting fiber concrete, and the upper end surface of the internal section steel (11) is welded to the upper end opening of the section steel filling chamber (111) with a horizontally arranged node upper end connecting plate (12), and the internal section steel ( 11) The lower end surface of the section steel filling chamber (111) is welded with a horizontally arranged node lower end connecting plate (13) at the lower end opening of the section steel filling chamber (111), and the outer periphery of the internal section steel (11) is on the node upper end connecting plate (12), node An ECC outsourcing protective layer (14) is poured between the lower connecting plates (13), and the left side of the internal section steel (11) is welded with a left outwardly extending connecting plate ( 15), the right side of the internal section steel (11) is welded with a right side outrigger connecting plate (16) that is vertically arranged and protrudes beyond the right side horizontally, and the left end of the left side outrigger connecting plate (15) Pass through the ECC outer protective layer (14) and extend to the left end side of the ECC outer protective layer (14), and the right end of the right outrigger connecting plate (16) passes through the ECC outer protective layer (14) and extend to the ECC outer protective layer the right end side of layer (14); The periphery of the internal section steel (11) is equipped with four longitudinal column connecting bolts (17) distributed in a rectangular shape and extending vertically respectively. The upper ends of the longitudinal column connecting bolts (17) respectively pass through the node upper connecting plate (12) and extend to the upper side of the node upper connecting plate (12), and the lower ends of each longitudinal column connecting bolts (17) respectively pass through the lower end of the node The connecting plate (13) extends to the lower end side of the connecting plate (13) at the lower end of the node; Inside the ECC outsourcing protection layer (14), there are four ECC reserved longitudinal reinforcement holes in a rectangular distribution and vertically completely penetrating on the periphery of the node upper connection plate (12) and the node lower connection plate (13). Vertically arranged connecting longitudinal reinforcements (18) are respectively embedded in the holes of the longitudinal reinforcement, and the upper ends of each connecting longitudinal reinforcement (18) respectively extend to the upper end side of the connecting plate (12) at the upper end of the node, and each connecting longitudinal reinforcement ( The lower end of 18) respectively extends to the lower end side of the lower connecting plate (13) of the node; The insides of the left beam (21) and the right beam (22) are respectively filled with beam longitudinal ribs (23) extending horizontally along the horizontal direction, and the connecting ends of the left beam (21) and the right beam (22) The inside of the steel plate is respectively filled with vertically arranged beam steel plates (24), the beam longitudinal ribs (23) of the left side beam (21) are welded with the beam steel plates (24) of the left side beam (21), and the right side beam (22) ) beam longitudinal reinforcement (23) is welded with the beam steel plate (24) of the right beam (22), and the connecting end face of the left beam (21) is provided with an opening towards the right and is shaped like the left side overhanging connecting plate (15) The reserved connecting hole on the left side with matching shape, the connecting end surface of the right cross beam (22) is provided with a reserved connection on the right side opening to the left and matching the shape of the right side overhanging connecting plate (16) Hole, the left outrigger connecting plate (15) is embedded in the left reserved connection hole of the left beam (21), and the right outrigger connecting plate (16) is embedded in the right side of the right beam (22) In the reserved connection hole, the left overhanging connecting plate (15) and the left crossbeam (21) are tightly connected by bolts and the bolts pass through the crossbeam steel plate (24) of the left crossbeam (21), and the right overhanging connecting plate (16) The crossbeam steel plate (24) is fastened to the right crossbeam (22) by bolts and the bolts pass through the right crossbeam (22); The lower end surface of the upper longitudinal column (31) is equipped with an upper longitudinal column connecting plate (33), the upper end surface of the lower end longitudinal column (32) is equipped with a lower longitudinal column connecting plate (34), and the upper end longitudinal column connecting plate (33) 1. Bolt mounting holes are provided on the lower longitudinal column connecting plate (34) corresponding to each longitudinal column connecting bolt (17), and the upper ends of each longitudinal column connecting bolt (17) respectively pass through the corresponding bolts of the upper longitudinal column connecting plate (33) The mounting holes extend to the upper side of the upper longitudinal column connecting plate (33), and the lower ends of each longitudinal column connecting bolt (17) respectively pass through the corresponding bolt installation holes of the lower longitudinal column connecting plate (34) and extend to the lower longitudinal column On the lower end side of the connecting plate (34), the upper ends of the connecting bolts (17) of each vertical column are fitted with nuts respectively, and the connecting plate (33) of the upper end of the vertical column and the connecting plate (12) at the upper end of the node are clamped by nuts, and the connecting bolts of each vertical column The lower ends of (17) are fitted with nuts respectively and the lower longitudinal column connecting plate (34) and the node lower connecting plate (13) are clamped by nuts; The upper longitudinal column (31) and the lower longitudinal column (32) are respectively provided with longitudinal reinforcement holes reserved for each connecting longitudinal reinforcement (18), and the lower ends of each connecting longitudinal reinforcement (18) are respectively embedded in the lower longitudinal column ( 32) In the corresponding longitudinal column reserved longitudinal reinforcement holes, the upper ends of each connecting longitudinal reinforcement (18) are respectively inserted into the corresponding longitudinal column reserved longitudinal reinforcement holes of the upper vertical column (31). 2. A dry-assembled ECC protective layer node structure according to claim 1, characterized in that: the outer surface of the internal section steel (11) is welded with studs (4). 3. A dry-assembled ECC protective layer node structure according to claim 1, characterized in that: each of the beam steel plates (24) is respectively welded with studs (4). 4. A dry assembled ECC protective layer node structure according to claim 1, characterized in that: the lower end surface of the upper vertical column (31) and the upper end surface of the lower vertical column (32) are connected to the nut The installation positions are provided with wrench avoidance grooves (35) respectively.