Assembled concrete frame beam-column joint with double longitudinal beams

Abstract

The application discloses a kind of assembled concrete frame beam-column joints with double longitudinal beams, it is characterized in that: the node includes: prefabricated frame beam-column joint core area, prefabricated reinforced concrete frame lower column, prefabricated reinforced concrete frame upper column, prefabricated reinforced concrete frame double longitudinal beam, prefabricated reinforced concrete frame crossbeam, connecting plate, concrete cover;Wherein, prefabricated frame beam-column joint core area is connected between prefabricated reinforced concrete frame lower column, prefabricated reinforced concrete frame upper column using steel column splicing, and is connected between prefabricated reinforced concrete frame double longitudinal beam, prefabricated reinforced concrete frame crossbeam using steel beam splicing;After splicing is completed, concrete cover is protected by pouring.The application is applicable to power plant main plant building assembled concrete frame beam-column joints with double longitudinal beams, meanwhile, the application can effectively solve the problems of the present prefabricated concrete frame structure node core area, such as great pouring difficulty, difficult connection quality control, long construction period and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering, in particular to a prefabricated concrete frame beam-column joint with double longitudinal beams. BACKGROUND

[0002] The prefabricated concrete structure can be processed and manufactured in a factory, the quality is easy to control, is not affected by seasons, the construction period is easy to guarantee, is more environmentally friendly, and meets the green building concept; currently, the prefabricated concrete frame structure usually adopts an assembled whole, the beam-column joint is integrally prefabricated, the beam is post-cast connected at a position where the stress is small, and the column splicing adopts a steel sleeve grouting connection; or the beam and the column are separately prefabricated in whole sections, and the joint is post-cast on site.

[0003] The prefabricated column and the prefabricated beam of the prefabricated concrete frame structure are post-cast with concrete in the beam-column core area, and form a whole; the column splicing adopts a steel sleeve grouting connection. There are many steel bars in the joint core area, and the on-site pouring construction is difficult; the post-cast concrete needs a long curing time, and the next process can be performed only after a certain strength is reached, thereby affecting the construction period; if the longitudinal steel bars are connected by using a grouting sleeve, the grouting quality is difficult to guarantee, and detection is difficult. SUMMARY

[0004] The present application aims to provide a prefabricated concrete frame beam-column joint with double longitudinal beams to solve the problems in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a prefabricated concrete frame beam-column joint with double longitudinal beams, the joint comprising: a prefabricated frame beam-column joint core area, a prefabricated reinforced concrete frame lower column, a prefabricated reinforced concrete frame upper column, a prefabricated reinforced concrete frame double longitudinal beam, a prefabricated reinforced concrete frame cross beam, a connecting plate, and a concrete protective layer.

[0006] The prefabricated frame beam-column joint core area is composed of a biaxial H-shaped steel column one, a transverse steel beam one, and two parallel longitudinal steel beams one; the prefabricated reinforced concrete frame lower column is pre-buried with a steel plate one at the upper end and welded with a biaxial H-shaped steel column two; the prefabricated reinforced concrete frame upper column is pre-buried with a steel plate two at the lower end of the reinforced concrete column and welded with a biaxial H-shaped steel column three; the prefabricated reinforced concrete frame double longitudinal beam is pre-buried with a steel plate three at the beam end and welded with a longitudinal steel beam two; and the prefabricated reinforced concrete frame cross beam is pre-buried with a steel plate four at the beam end and welded with a transverse steel beam two.

[0007] The prefabricated frame beam-column joint core area is spliced with the prefabricated reinforced concrete frame lower column and the prefabricated reinforced concrete frame upper column by using a steel column, and is spliced with the prefabricated reinforced concrete frame double longitudinal beam and the prefabricated reinforced concrete frame cross beam by using a steel beam; and after splicing, the concrete protective layer is poured to protect.

[0008] Further, the bidirectional H-shaped steel column one of the prefabricated frame beam-column joint core area is welded by four flanges, two web plates one and one web plate two;

[0009] The four flanges and two web plates one form two small H-shaped sections, the flanges are the two flanges of the longitudinal small H-shaped section, and the web plates one are the web plates of the longitudinal small H-shaped section.

[0010] The web plate two connects the two small H-shaped sections to form a transverse large H-shaped section, the web plate two is the web plate of the large H-shaped section, and the two parallel small H-shaped sections in the longitudinal direction are the flanges of the transverse large H-shaped section.

[0011] The web plate two is provided with bolt holes at the upper and lower ends.

[0012] Further, the transverse steel beam one flange of the transverse steel beam one of the prefabricated frame beam-column joint core area is welded and connected with the flange and the web plate one, and the transverse steel beam one web plate is welded with the web plate.

[0013] Further, horizontal stiffening plates one are arranged on both sides of the web plate two, the horizontal stiffening plates one are aligned with the transverse steel beam one flange, and rectangular holes are arranged in the middle of the horizontal stiffening plates one.

[0014] Horizontal stiffening plates three are arranged on both sides of the transverse steel beam one web plate.

[0015] Further, the longitudinal steel beam one upper flange, the longitudinal steel beam one lower flange and the longitudinal steel beam one web plate of the longitudinal steel beam one are respectively welded and connected with the flanges of the bidirectional H-shaped steel column one, and the longitudinal steel beam one web plate is centered with the web plate one.

[0016] The longitudinal steel beam one upper flange is aligned with the horizontal stiffening plates one, and the longitudinal steel beam one lower flange is aligned with the horizontal stiffening plates three.

[0017] The longitudinal steel beam one upper flange is a folded plate composed of an inclined plate and a flat plate, and the longitudinal steel beam one lower flange is a flat plate.

[0018] Longitudinal steel beam one stiffening plates are arranged on both sides of the longitudinal steel beam one web plate at the junction of the inclined plate and the flat plate of the longitudinal steel beam one upper flange.

[0019] Further, horizontal stiffening plates two are arranged on both sides of the web plate two, the horizontal stiffening plates two are aligned with the longitudinal steel beam one lower flange, and rectangular holes are arranged in the middle of the horizontal stiffening plates two.

[0020] Horizontal stiffening plates four and horizontal stiffening plates five are arranged on one side of the web plate one away from the transverse steel beam one, and are respectively aligned with the longitudinal steel beam one upper flange and the longitudinal steel beam one flange, and the other horizontal stiffening plate four on this side is aligned with the transverse steel beam one flange.

[0021] Further, bolt holes are reserved at the outer ends of the longitudinal steel beam one web plate and the transverse steel beam one web plate.

[0022] Further, the transverse steel beam one, the longitudinal double steel beam one and the bidirectional H-shaped steel column one are connected, and then the outer concrete protective layer one is poured.

[0023] Further, the concrete protective layer one is poured within the range of 1m above the upper flange to 1m below the lower flange of the transverse steel beam one.

[0024] The outer edge size of the concrete protective layer one is the same as that of the prefabricated reinforced concrete frame lower column.

[0025] Further, the prefabricated reinforced concrete frame lower column upper end embedded steel plate one is welded with the bidirectional H-shaped steel column two, and the bidirectional H-shaped steel column web two upper end is provided with bolt holes.

[0026] The bidirectional H-shaped steel column two section size and bolt hole setting are the same as those of the bidirectional H-shaped steel column one.

[0027] Further, the embedded steel plate one is welded with the reinforced concrete frame lower column longitudinal reinforcement, and the embedded steel plate one is provided with a shear key on one side in the prefabricated reinforced concrete frame lower column, which is composed of mutually perpendicular steel plate one shear key one and steel plate one shear key two and welded with the embedded steel plate one.

[0028] Further, the prefabricated reinforced concrete frame upper column lower end embedded steel plate two is welded with the bidirectional H-shaped steel column three, and the bidirectional H-shaped steel column web two lower end is provided with bolt holes. The bidirectional H-shaped steel column two 3C section size and bolt hole setting are the same as those of the core area bidirectional H-shaped steel column one.

[0029] Further, the embedded steel plate two of the prefabricated reinforced concrete frame upper column is welded with the reinforced concrete frame upper column longitudinal reinforcement, and the embedded steel plate two is provided with a shear key on one side in the prefabricated reinforced concrete frame upper column.

[0030] The shear key is composed of mutually perpendicular steel plate two shear key one and steel plate two shear key two and welded with the embedded steel plate two.

[0031] Further, the embedded steel plate three is welded with the longitudinal steel beam two, and the longitudinal steel beam two web of the longitudinal steel beam two outer end is provided with bolt holes.

[0032] The longitudinal steel beam two section size and bolt hole setting are the same as those of the longitudinal steel beam one.

[0033] Further, the embedded steel plate three is welded with the reinforced concrete frame longitudinal beam longitudinal reinforcement, and the embedded steel plate three is provided with a shear key on one side in the beam.

[0034] The shear key is composed of mutually perpendicular steel plate three shear key one and steel plate three shear key two and welded with the embedded steel plate three.

[0035] Further, the fourth embedded steel plate is welded with the second transverse steel beam, and bolt holes are arranged on the web of the second transverse steel beam at the outer end of the second transverse steel beam.

[0036] The size and bolt hole arrangement of the second transverse steel beam are the same as those of the first transverse steel beam.

[0037] Further, the fourth embedded steel plate is welded with the longitudinal steel bar one of the reinforced concrete frame beam, and a shear key is arranged on one side of the fourth embedded steel plate in the beam.

[0038] The shear key is composed of the fourth shear key one and the fourth shear key two which are perpendicular to each other and are welded with the fourth embedded steel plate.

[0039] Further, the connecting plate includes the lower column splicing connecting plate one and the upper column splicing connecting plate two between the first bidirectional H-shaped column and the second bidirectional H-shaped column, the longitudinal beam splicing connecting plate three between the first longitudinal steel beam and the second longitudinal steel beam, and the transverse beam splicing connecting plate four between the first transverse steel beam and the second transverse steel beam.

[0040] The connecting plate connects the webs between the steel columns and the steel beams, and each end of the connecting plate is provided with bolt holes, the size, number, and position of which are the same as those of the corresponding splicing web.

[0041] Further, the lower end of the second web is spliced with the upper end of the second web of the second bidirectional H-shaped column by the lower column splicing connecting plate one, one end of the lower column splicing connecting plate one is distributed on both sides of the lower end of the second web, and a plurality of reserved bolt holes at one end of the lower column splicing connecting plate one are aligned with the reserved bolt holes one at the lower end of the second web.

[0042] The other end of the two lower column splicing connecting plates one is distributed on both sides of the upper end of the second web of the second bidirectional H-shaped column, and a plurality of reserved bolt holes at the other end of the lower column splicing connecting plate one are aligned with the reserved bolt holes one at the upper end of the second web of the second bidirectional H-shaped column.

[0043] The lower end of the second web and one end of the two lower column splicing connecting plates one are fixed by high-strength bolts passing through the reserved bolt holes at one end of the two lower column splicing connecting plates one and the reserved bolt holes at the lower end of the second web of the first bidirectional H-shaped column, wherein the lower end of the second web of the first bidirectional H-shaped column is located between one end of the two lower column splicing connecting plates one.

[0044] The upper end of the second web of the second bidirectional H-shaped column and the other end of the two lower column splicing connecting plates one are fixed by high-strength bolts passing through the reserved bolt holes at the other end of the two lower column splicing connecting plates one and the reserved bolt holes at the upper end of the second web of the second bidirectional H-shaped column, wherein the upper end of the second web of the second bidirectional H-shaped column is located between the other end of the two lower column splicing connecting plates one.

[0045] The lower end of the first flange of the two-way H-shaped steel column is welded and spliced with the upper end of the flange of the second two-way H-shaped steel column, and the lower end of the first web of the two-way H-shaped steel column is welded and spliced with the upper end of the web of the second two-way H-shaped steel column.

[0046] Further, the upper end of the second web is spliced with the lower end of the second web of the third two-way H-shaped steel column using the upper column splicing connecting plate two, and the splicing mode is the same as that of the lower end of the first two-way H-shaped steel column and the upper end of the second two-way H-shaped steel column, which will not be repeated; the upper end of the first flange of the two-way H-shaped steel column is welded and spliced with the lower end of the flange of the third two-way H-shaped steel column, and the upper end of the first web of the two-way H-shaped steel column is welded and spliced with the lower end of the web of the third two-way H-shaped steel column.

[0047] Further, the webs between the first longitudinal steel beam and the second longitudinal steel beam are spliced using the longitudinal beam splicing connecting plate three, and the splicing mode is the same as that of the lower end of the first two-way H-shaped steel column and the upper end of the second two-way H-shaped steel column; the flanges are spliced by welding.

[0048] Further, the webs between the first transverse steel beam and the second transverse steel beam are spliced using the transverse beam splicing connecting plate four, and the splicing mode is the same as that of the lower end of the first two-way H-shaped steel column and the upper end of the second two-way H-shaped steel column; the flanges are spliced by welding.

[0049] Further, after the splicing of the steel columns and steel beams is completed, a concrete protective layer is poured in each splicing area.

[0050] The technical effects and advantages of the present application are as follows:

[0051] The two-way H-shaped steel column is a steel column with H-shaped cross-section in both longitudinal and transverse directions, the transverse direction is a large H-shaped cross-section, and the longitudinal direction is two parallel small H-shaped cross-sections, the two flanges of the large H-shaped cross-section are two small H-shaped cross-sections, and the structure is simple. It is beneficial to realize the longitudinal rigid frame system of the main plant of the power plant using double longitudinal beams. The frame core area adopts steel structure, the joint ductility is good, the deformation capacity is strong, and the seismic capacity is high. The outer concrete of the frame core area only plays a protective role for the steel structure. Due to the multiple horizontal stiffening plates in the core area, the frame core area is prefabricated in the factory, which can effectively ensure the pouring density of the outer concrete.

[0052] The connection of the concrete frame beam and column is converted into the connection of steel members, the structure is simple, and the on-site construction is convenient. The bearing capacity of the outer steel beam of the frame core area is the same as that of the prefabricated concrete beam, the bearing capacity of the steel column of the frame core area is the same as that of the prefabricated concrete column, the steel column connection and the steel beam connection are completed, and the next installation process can be carried out, and the exposed steel member only needs to be poured with concrete protection later, which does not affect the construction period. The steel members are connected by bolting and welding, which combines the advantages of bolt connection and welding connection, the ultimate bearing capacity of the joint is slightly lower than that of the welded joint, and the bearing capacity is higher than that of the bolt connection, but the bolt-welded mixed connection joint has better ductility and energy dissipation capacity.

[0053] The bolt-welded mixed connection can effectively reduce the length of the connection section and save engineering cost.

[0054] The application is suitable for the fabricated concrete frame beam-column joint of the main plant house of a power plant with double longitudinal beams, and can effectively solve the problems of great difficulty in pouring, difficult control of connection quality and long construction period of the core area of the prefabricated concrete frame structure joint.

[0055] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0056] Figure 1a It is a schematic diagram of the cross section of the bidirectional H-shaped steel column of the present application;

[0057] Figure 1b It is a schematic diagram of the cross section of the longitudinal steel beam of the present application;

[0058] Figure 1c It is a schematic diagram of the cross section of the transverse steel beam of the present application;

[0059] Figure 2 It is a schematic diagram of the prefabricated frame joint core area of the present application;

[0060] Figure 3 It is a schematic diagram of the prefabricated frame joint core area of the present application Figure 2 ;

[0061] Figure 4 It is a schematic diagram of the outer wrapping concrete of the prefabricated frame joint core area of the present application;

[0062] Figure 5 It is a schematic diagram of the prefabricated reinforced concrete frame lower column of the present application;

[0063] Figure 6 It is a schematic diagram of the prefabricated reinforced concrete frame upper column of the present application;

[0064] Figure 7 It is a schematic diagram of the prefabricated reinforced concrete frame double longitudinal beam of the present application;

[0065] Figure 8 It is a schematic diagram of the prefabricated reinforced concrete frame transverse beam of the present application;

[0066] Figure 9 It is a schematic diagram of the splicing of the prefabricated frame joint core area and the prefabricated reinforced concrete frame beam and column of the present application;

[0067] Figure 10 It is a schematic diagram of the outer wrapping concrete protective layer of the prefabricated frame after splicing of the present application;

[0068] Figure 11aTop view of the embedded steel plate at the end of the prefabricated reinforced concrete frame column and beam of the present application;

[0069] Figure 11b Elevation view of the end of the prefabricated reinforced concrete frame column and beam of the present application;

[0070] Figure 11c Sectional view of the embedded steel plate and steel bar arrangement at the end of the prefabricated reinforced concrete frame column and beam of the present application;

[0071] Figure 11d Sectional view of the steel bar arrangement at the end of the prefabricated reinforced concrete frame column and beam of the present application;

[0072] Figure 11e Sectional view of the steel bar arrangement at the end of the prefabricated reinforced concrete frame column and beam of the present application.

[0073] In the figure:

[0074] 1, prefabricated frame beam column joint core area; 1C, bidirectional H-shaped steel column one; 1CF, flange; 1CW1, web one; 1CW2, web two; 1TB, transverse steel beam one; 1TBF, transverse steel beam one flange; 1TBFU, transverse steel beam one upper flange; 1TBFD, transverse steel beam one lower flange; 1TBW, transverse steel beam one web; 1LB, longitudinal double steel beam one; 1LBF, longitudinal steel beam one flange; 1LBFU, longitudinal steel beam one upper flange; 1LBFD, longitudinal steel beam one lower flange; 1LBW, longitudinal steel beam one web; 1LBS, longitudinal steel beam one stiffening plate; 1CS-1, horizontal stiffening plate one; 1CS-2, horizontal stiffening plate two; 1CS-3, horizontal stiffening plate three; 1CS-4, horizontal stiffening plate four; 1CS-5, bidirectional H-shaped steel column one horizontal stiffening plate five;

[0075] 2, prefabricated reinforced concrete frame lower column; 2-1, embedded steel plate one; 2-1-1, steel plate one shear key one; 2-1-2, steel plate one shear key two; 2-2 reinforced concrete frame lower column longitudinal steel bar one; 2-3, reinforced concrete frame lower column longitudinal steel bar two; 2-4, reinforced concrete frame lower column stirrup one; 2-5, reinforced concrete frame lower column stirrup two; 2-6, reinforced concrete frame lower column tie one; 2-7, reinforced concrete frame lower column tie two; 2-8, reinforced concrete frame lower column tie three; 2-9, reinforced concrete frame lower column tie four; 2C, bidirectional H-shaped steel column two; 2CF, bidirectional H-shaped steel column two flange; 2CW1, bidirectional H-shaped steel column two web one; 2CW2, bidirectional H-shaped steel column two web two;

[0076] 3, prefabricated reinforced concrete frame column; 3-1, embedded steel plate two; 3-1-1, steel plate two shear key one; 3-1-2, steel plate two shear key two; 3-2, reinforced concrete frame column longitudinal reinforcement one; 3-3, reinforced concrete frame column longitudinal reinforcement two; 3-4, reinforced concrete frame column stirrup one; 3-5, reinforced concrete frame column stirrup two; 3-6, reinforced concrete frame column tie one; 3-7, reinforced concrete frame column tie two; 3-8, reinforced concrete frame column tie three; 3-9, reinforced concrete frame column tie four; 3C, three-way H-shaped steel column three; 3CF, three-way H-shaped steel column three flange; 3CW1, three-way H-shaped steel column three web one; 3CW2, three-way H-shaped steel column three web two;

[0077] 4, prefabricated reinforced concrete frame beam; 4-1, embedded steel plate three; 4-1-1, steel plate three shear key one; 4-1-2, steel plate three shear key two; 4-2, reinforced concrete frame beam longitudinal reinforcement one; 4-3, reinforced concrete frame beam longitudinal reinforcement two; 4-4, reinforced concrete frame beam stirrup one; 4-5, reinforced concrete frame beam stirrup two; 4-6, reinforced concrete frame beam tie one; 4-7, reinforced concrete frame beam tie two; 4-8, reinforced concrete frame beam tie three; 4-9, reinforced concrete frame beam tie four; 2LB, longitudinal steel beam two; 2LBF, longitudinal steel beam two flange; 2LBW, longitudinal steel beam two web;

[0078] 5, prefabricated reinforced concrete frame beam; 5-1, embedded steel plate four; 5-1-1, steel plate four shear key one; 5-1-2, steel plate four shear key two; 5-2, reinforced concrete frame beam longitudinal reinforcement one; 5-3, reinforced concrete frame beam longitudinal reinforcement two; 5-4, reinforced concrete frame beam stirrup one; 5-5, reinforced concrete frame beam stirrup two; 5-6, reinforced concrete frame beam tie one; 5-7, reinforced concrete frame beam tie two; 5-8, reinforced concrete frame beam tie three; 5-9, reinforced concrete frame beam tie four; 2TB, transverse steel beam two; 2TBF, transverse steel beam two flange; 2TBW, transverse steel beam two web;

[0079] 6, connecting plate; 6-1, lower column splicing connecting plate one; 6-2, upper column splicing connecting plate two; 6-3, longitudinal beam splicing connecting plate three; 6-4, transverse beam splicing connecting plate four;

[0080] 7, concrete cover; 7-1, core area concrete cover one; 7-2, core area steel column and prefabricated frame lower column splicing concrete cover two; 7-3, core area steel column and prefabricated frame upper column splicing concrete cover three; 7-4, core area longitudinal beam and prefabricated frame longitudinal beam splicing concrete cover four; 7-5, core area transverse beam and prefabricated frame transverse beam splicing concrete cover five. DETAILED DESCRIPTION

[0081] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0082] To solve the problems in the prior art, the present application discloses a kind of assembled concrete frame beam-column joints with double longitudinal beams, the node includes prefabricated frame node core area 1, prefabricated reinforced concrete frame lower column 2, prefabricated reinforced concrete frame upper column 3, prefabricated reinforced concrete frame double longitudinal beam 4, prefabricated reinforced concrete frame cross beam 5, connecting plate 6, concrete protective layer 7;Wherein,

[0083] The prefabricated frame beam-column joint core area 1 is composed of two-way H-shaped steel column 1C, transverse steel beam 1TB and two parallel longitudinal steel beams 1LB. After the transverse steel beam 1TB and the longitudinal steel beam 1LB are connected with the two-way H-shaped steel column 1C, the concrete protective layer 7-1 is poured. The upper and lower ends of the two-way H-shaped steel column 1C, the transverse steel beam 1TB and the longitudinal steel beam 1LB extend out of the concrete protective layer 7-1.

[0084] The upper end of the prefabricated reinforced concrete frame lower column 2 is embedded with a steel plate 2-1 and welded with a two-way H-shaped steel column 2C. The prefabricated reinforced concrete frame upper column 3 is embedded with a steel plate 3-1 at the lower end of the reinforced concrete column and welded with a two-way H-shaped steel column 3C. The prefabricated reinforced concrete frame double longitudinal beam 4 is embedded with a steel plate 4-1 at the beam end and welded with a longitudinal steel beam 2LB. The prefabricated reinforced concrete frame cross beam 5 is embedded with a steel plate 5-1 at the beam end and welded with a transverse steel beam 2TB. The prefabricated frame beam-column joint core area 1 is spliced with the prefabricated reinforced concrete frame lower column 2 and the prefabricated reinforced concrete frame upper column 3 using steel columns, and spliced with the prefabricated reinforced concrete frame double longitudinal beam 4 and the prefabricated reinforced concrete frame cross beam 5 using steel beams. After splicing, the concrete protective layer 7 is poured for protection.

[0085] The lower end of the two-way H-shaped steel column 1C of the prefabricated frame joint core area 1 is spliced with the upper end of the two-way H-shaped steel column 2C of the prefabricated reinforced concrete frame lower column 2 using the lower column splicing connecting plate 6-1.

[0086] The upper end of the two-way H-shaped steel column 1C of the prefabricated frame joint core area 1 is spliced with the lower end of the two-way H-shaped steel column 3C of the prefabricated reinforced concrete frame upper column 3 using the upper column splicing connecting plate 6-2.

[0087] The longitudinal double steel beam 1LB of the core area 1 of the precast frame node is spliced ​​with the longitudinal steel beam 2LB of the precast reinforced concrete frame longitudinal beam 4 by the longitudinal beam splicing connection plate 6-3.

[0088] The transverse steel beam 1TB of the core area 1 of the precast frame node and the transverse steel beam 2TB of the precast reinforced concrete frame beam 5 are spliced ​​together by the crossbeam splicing connection plate 46-4.

[0089] After all the splicing is completed, a concrete protective layer is poured for protection.

[0090] The following is a more detailed explanation with reference to the accompanying drawings.

[0091] Specifically, such as Figures 1a-1c As shown in the diagram, * represents the serial number of the steel columns and beams, such as 1, 2, 3, etc. Figure 1a As shown, a two-way H-section steel column is formed by connecting two small-section H-section steel columns together with a steel plate to create a large-section H-section steel column in another direction. The steel plate CF is the flange of the small-section H-section steel column, CW1 is the web of the small-section H-section steel column, and CW2 connects the two small-section H-section steel columns to form the large-section H-section steel column. CW2 is the web of the large-section H-section steel column, and the two small-section H-section steel columns are the flanges of the large-section H-section steel column. Figure 1b As shown, LBF is the flange of the longitudinal steel beam, and LBW is the web of the longitudinal steel beam. Figure 1c As shown, TBF is the flange of the transverse steel beam, and TBW is the web of the transverse steel beam.

[0092] Specifically, such as Figure 2 As shown, bolt holes are reserved at both ends of the web plate 1CW2 of the bidirectional H-shaped steel column 1C in the core area. The size and number of holes are calculated according to the load.

[0093] like Figure 2 As shown, the transverse steel beam flange 1TBF is welded to the web plate 1CW1 and flange 1CF of the two-way H-shaped steel column 1C, and the transverse steel beam web plate 1TBW is welded to the web plate 1CW1 of the two-way H-shaped steel column 1C. Bolt holes are reserved at the outer end of the transverse steel beam web plate 1TBW, and the size and number of holes are calculated according to the load.

[0094] like Figure 2 As shown, horizontal stiffening plate - 1CS 1. Arranged on the left and right sides of the web 1CW2 of the two-way H-shaped steel column 1C, horizontally aligned with the flange 1TBF of the transverse steel beam, a total of 4 pieces, and horizontal stiffening plate 1CS. 1. Welded to web plate 1CW2 and web plate 1CW1, with horizontal stiffening plate 1CS. 1. A hole is reserved in the middle to facilitate the pouring of concrete.

[0095] likeFigure 2 horizontal stiffener two 1CS 2 arranged on the left and right sides of the web two 1CW2 of the bidirectional H-shaped steel column one 1C, the horizontal position is aligned with the longitudinal steel beam one flange 1LBF at the bottom of the longitudinal steel beam one 1LB, a total of 2 pieces, horizontal stiffener two 1CS 2 welded and connected with the web two 1CW2 and the web one 1CW1, horizontal stiffener two 1CS 2 The middle is pre-drilled to facilitate concrete pouring.

[0096] As shown in Figure 2 horizontal stiffener three 1CS 3 arranged on the left and right sides of the transverse steel beam one web 1TBW, the horizontal position is aligned with the longitudinal steel beam one flange 1LBF at the bottom of the longitudinal steel beam one 1LB, a total of 2 pieces, horizontal stiffener three 1CS 3 welded and connected with the web one 1CW1, the flange 1CF and the transverse steel beam one web 1TBW.

[0097] As shown in Figure 3 The longitudinal steel beam one flange 1LBF includes a longitudinal steel beam one upper flange 1LBFU and a longitudinal steel beam one lower flange 1LBFD; the longitudinal steel beam one flange 1LBF and the longitudinal steel beam one web 1LBW are welded and connected with the flange 1CF of the bidirectional H-shaped steel column one 1C, the longitudinal steel beam one web 1LBW is aligned with the web one 1CW1 of the bidirectional H-shaped steel column one 1C and is welded and connected with the web one 1CW1 of the bidirectional H-shaped steel column one 1C. The longitudinal steel beam one upper flange 1LBFU is a folded plate, the upper end is welded and connected with the horizontal stiffener one 1CS 1 In the same horizontal plane, the longitudinal steel beam one lower flange 1LBFD is a flat plate, a longitudinal steel beam one stiffener 1LBS is provided at the bending part of the longitudinal steel beam one upper flange 1LBFU, arranged on the left and right sides of the longitudinal steel beam one web 1LBW, welded and connected with the longitudinal steel beam one flange 1LBF and the longitudinal steel beam one web 1LBW, and there are two pieces of the longitudinal steel beam one. The outer end of the longitudinal steel beam one web 1LBW is pre-drilled with bolt holes, the size and number of which are calculated according to the load.

[0098] As shown in Figure 3 horizontal stiffener four 1CS 4 welded and connected with the flange 1CF and the web one 1CW1, the horizontal position is aligned with the transverse steel beam one flange 1TBF, a total of 2 pieces.

[0099] As shown in Figure 3 horizontal stiffener five 1CS 5 welded and connected with the flange 1CF and the web one 1CW1, the horizontal position is aligned with the longitudinal steel beam one flange 1LBF at the bottom of the longitudinal steel beam one 1LB, a total of 1 piece.

[0100] As shown in Figure 4As shown, the core area 1 of the precast frame beam-column joint consists of a bidirectional H-shaped steel column-1C, a longitudinal double steel beam-1LB, a transverse steel beam-1TB, and a horizontal stiffening plate-1CS. 1. Horizontal stiffening plate II 1CS 2. Horizontal stiffening plate 31CS 3. Horizontal stiffening plate 41CS After the connection between 4 and the longitudinal steel beam and the stiffening plate 1LBS is completed, pour the concrete protective layer 7. 1. Protection. Concrete protective layer 7 1. The core area is to be cast within the range of 1m above the upper flange 1TBFU of the transverse steel beam and 1m below the lower flange 1TBFD of the transverse steel beam. The bidirectional H-shaped steel column-1C, the transverse steel beam-1TB, and the longitudinal double steel beam-1LB extend beyond the concrete cover. The length of 1 unit should meet the on-site installation requirements. Concrete protective layer 7 1. Outer dimensions and reinforced concrete column 2 of the precast frame lower column 2 1. Same.

[0101] like Figure 5 As shown, a steel plate 2 is embedded at the upper end of the lower column 2 of the precast reinforced concrete frame. 1. The flange 2CF and web 2C1 of the two-way H-beam column 2C, and the web 2CW2 of the two-way H-beam column 2C and the steel plate 2CW1. 1. Welded connection. 2. Bolt holes are pre-drilled at the upper end of CW2. The number and size of the bolt holes are the same as the bolt holes pre-drilled at the lower end of the web plate 1CW2 of the bidirectional H-shaped steel column 1C in the core area. The pre-embedded steel plate 2... 1. Longitudinal reinforcement of the lower column of the reinforced concrete frame 2 2. Welding, pre-embedded steel plate - 2 1. A shear key is provided on one side of the lower column 2 of the precast reinforced concrete frame. The shear key consists of mutually perpendicular steel plates - shear key - 2. 1 1. Steel plate shear key 2. 1 Composed of 2 components, and pre-embedded steel plate 12 1. Welding.

[0102] like Figure 6 As shown, the lower end of column 3 of the precast reinforced concrete frame has a pre-embedded steel plate 2. 1. The two-way H-shaped steel column 3C, the two-way H-shaped steel column 3C flange 3CF and the two-way H-shaped steel column 3C web 1 3CW1, the two-way H-shaped steel column 3C web 2 3CW2 and the steel plate 3 1Welding connection. The lower end of the two-web two 3CW2 of the double-direction H-shaped steel column is reserved with bolt holes, and the number and size of the bolt holes are the same as those of the bolt holes reserved at the upper end of the one-web one 1CW2 of the double-direction H-shaped steel column in the core area.

[0103] The embedded steel plate two 3-1 of the prefabricated reinforced concrete frame upper column 3 is welded with the longitudinal steel bars 3-2 of the reinforced concrete frame upper column, and a shear key is arranged on one side of the embedded steel plate two 3-1 in the prefabricated reinforced concrete frame upper column 3; the shear key is composed of a steel plate two shear key one 3-1-1 and a steel plate two shear key two 3-1-2 which are perpendicular to each other and welded with the embedded steel plate two 3-1.

[0104] As shown in Figure 7 , the embedded steel plate three 4-1 is arranged at the end of the prefabricated reinforced concrete frame double longitudinal beam 4, and the flange 2LBF and the web 2LBW of the longitudinal steel beam two are welded with the embedded steel plate three 4-1. The outer end of the web 2LBW of the longitudinal steel beam two is reserved with bolt holes, and the number and size of the bolt holes are the same as those of the bolt holes reserved at the outer end of the web 1LBW of the longitudinal steel beam one in the core area. The embedded steel plate three 4-1 is welded with the longitudinal steel bars 4-2 of the reinforced concrete frame longitudinal beam, and a shear key is arranged on one side of the embedded steel plate three 4-1 in the beam; the shear key is composed of a steel plate three shear key one 4-1-1 and a steel plate three shear key two 4-1-2 which are perpendicular to each other and welded with the embedded steel plate three 4-1.

[0105] As shown in Figure 8 , the embedded steel plate four 5-1 is arranged at the end of the prefabricated reinforced concrete frame beam 5, and the flange 2TBF and the web 2TBW of the transverse steel beam two are welded with the embedded steel plate four 5-1. The outer end of the web 2TBW of the transverse steel beam two is reserved with bolt holes, and the number and size of the bolt holes are the same as those of the bolt holes reserved at the outer end of the web 1TBW of the transverse steel beam one in the core area. The embedded steel plate four 5-1 is welded with the longitudinal steel bars one 5-2 of the reinforced concrete frame beam, and a shear key is arranged on one side of the embedded steel plate four 5-1 in the beam; the shear key is composed of a steel plate four shear key one 5-1-1 and a steel plate four shear key two 5-1-2 which are perpendicular to each other and welded with the embedded steel plate four 5-1. As shown in Figure 9 , the lower end of the web two 1CW2 of the double-direction H-shaped steel column one 1C of the core area 1 of the prefabricated frame beam-column joint is spliced with the upper end of the web two 2CW2 of the double-direction H-shaped steel column two of the prefabricated reinforced concrete frame lower column 2 by using the lower column splicing plate one 6-1, and the lower end of the web one 1CW1 and the lower end of the flange 1CF of the double-direction H-shaped steel column one 1C are respectively spliced with the upper end of the web one 2CW1 and the upper end of the flange 2CF of the double-direction H-shaped steel column two by welding;

[0106] As shown in Figure 9As shown, the upper end of the web plate 1CW2 of the two-way H-shaped steel column 1C in the core area 1 of the precast frame beam-column node is spliced ​​with the lower end of the web plate 3CW2 of the two-way H-shaped steel column 3 in the precast reinforced concrete frame using the upper column splicing connection plate 6-2. The upper end of the web plate 1CW1 and the upper end of the flange 1CF of the two-way H-shaped steel column 1C are respectively welded to the lower end of the web plate 3CW1 and the lower end of the flange 3CF of the two-way H-shaped steel column 3.

[0107] like Figure 9 As shown, the longitudinal double steel beam web 1LBW of the core area 1 of the precast frame beam-column node and the longitudinal double steel beam web 2LBW of the precast reinforced concrete frame double longitudinal beam 4 are spliced ​​by longitudinal beam splicing connection plate 36-3, and the longitudinal double steel beam flange 1LBF and the longitudinal double steel beam flange 2LBF are spliced ​​by welding.

[0108] like Figure 9 As shown, the transverse steel beam web 1TBW of the core area 1 of the precast frame beam-column node and the transverse steel beam web 2TBW of the precast reinforced concrete frame beam 5 are spliced ​​by the transverse beam splicing connection plate 46-4, and the transverse steel beam flange 1TBF and the transverse steel beam flange 2TBF are spliced ​​by welding.

[0109] like Figure 10 As shown, after the core area 1 of the precast frame beam-column joint is spliced ​​with the precast reinforced concrete frame lower column 2, precast reinforced concrete frame upper column 3, precast reinforced concrete frame double longitudinal beam 4, and precast reinforced concrete frame transverse beam 5, a concrete protective layer is poured in the splicing area, including concrete protective layer 2 (7-2) for splicing the core area steel column and the precast frame lower column, concrete protective layer 3 (7-3) for splicing the core area steel column and the precast frame upper column, concrete protective layer 4 (7-4) for splicing the core area longitudinal beam and the precast frame longitudinal beam, and concrete protective layer 5 (7-5) for splicing the core area transverse beam and the precast frame transverse beam.

[0110] Figures 11a-11e In the diagram, * represents the numbering of precast reinforced concrete frame columns and beams, such as 2, 3, 4, 5, etc. Figure 11a As shown, steel plates 2-1 are pre-embedded at the ends of columns 2 in the precast reinforced concrete frame. Longitudinal reinforcement bars 2-2 and 2-3 are welded to these plates. Longitudinal reinforcement bars 2-2 are arranged around the perimeter of the column section, and longitudinal reinforcement bars 2-3 are arranged on both sides of the shear keys. Simultaneously, shear keys 2-1-1 and 2-1-2, perpendicular to each other, are welded to the center of steel plate 2-1. Shear key 2-1 is located on both sides of shear key 1, and shear keys 1 and 2 are welded together. Shear keys 1 and 2 are arranged inside the column. Figure 11b Longitudinal reinforcement bar 12 2. Arranged along the entire length of the lower column 2 of the precast reinforced concrete frame; longitudinal reinforcement 2 3 Only in the range of h+50d (h is the height of shear key, d is the longitudinal reinforcement diameter) height, see Figure 11b 、 11c , 11d; precast reinforced concrete frame lower column 2 hoop 2 4 Along the column is arranged along the whole length; hoop 2 5, tie 2 6, tie 2 7 Only in the range of h height of shear key, see Figure 11c ; tie 2 8, tie 2 9 Outside the range of shear key height, see Figure 11d 、 11e .

[0111] Pre-cast reinforced concrete frame upper column 3, pre-cast reinforced concrete frame longitudinal beam 4, pre-cast reinforced concrete frame beam 5 embedded steel plate and steel configuration method with pre-cast reinforced concrete frame lower column 2, not one by one.

[0112] Working principle: precast reinforced concrete frame includes precast frame node core area, precast reinforced concrete frame column, precast reinforced concrete frame beam three parts, precast frame node core area adopts steel structure, precast reinforced concrete frame column end welding steel column, precast reinforced concrete frame beam end welding steel beam, respectively with the core area steel structure splicing, the connection between precast reinforced concrete frame beam and column is converted from traditional concrete connection to splicing between steel beam and steel column, which is simpler in processing, manufacturing and on-site installation construction; Steel column adopts bidirectional H-shaped steel column, which can solve the problem of rigid connection between double longitudinal beams and frame columns of reinforced concrete longitudinal frame.

[0113] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for those skilled in the art, it still can be modified, or equivalent replacement of part of the technical features, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. A precast concrete frame beam-column joint with double longitudinal beams, characterized in that: The node comprises a prefabricated frame beam column node core area (1), a prefabricated reinforced concrete frame lower column (2), a prefabricated reinforced concrete frame upper column (3), a prefabricated reinforced concrete frame double longitudinal beam (4), a prefabricated reinforced concrete frame cross beam (5), a connecting plate (6) and a concrete protective layer (7); The prefabricated frame beam column node core area (1) is composed of a bidirectional H-shaped steel column (1C), a transverse steel beam (1TB), two parallel longitudinal double steel beams (1LB); The prefabricated reinforced concrete frame lower column (2) is embedded with a embedded steel plate (2-1) at the upper end and welded with a bidirectional H-shaped steel column (2C); The bidirectional H-shaped steel column (2C) is welded with the bidirectional H-shaped steel column flange (2CF), the bidirectional H-shaped steel column web (2CW1) and the bidirectional H-shaped steel column web (2CW2) of the bidirectional H-shaped steel column (2C) and the embedded steel plate (2-1); the embedded steel plate (2-1) is welded with the longitudinal steel bars of the reinforced concrete frame lower column, and the embedded steel plate (2-1) is provided with shear keys on one side in the prefabricated reinforced concrete frame lower column (2); the shear keys are composed of the mutually perpendicular steel plate one shear key (2-1-1) and the steel plate one shear key (2-1-2) and are welded with the embedded steel plate (2-1); The prefabricated reinforced concrete frame upper column (3) is embedded with a embedded steel plate (3-1) at the lower end and welded with a bidirectional H-shaped steel column (3C); The bidirectional H-shaped steel column (3C) is welded with the bidirectional H-shaped steel column flange (3CF), the bidirectional H-shaped steel column web (3CW1) and the bidirectional H-shaped steel column web (3CW2) of the bidirectional H-shaped steel column (3C) and the embedded steel plate (3-1); the embedded steel plate (3-1) of the prefabricated reinforced concrete frame upper column (3) is welded with the longitudinal steel bars of the reinforced concrete frame upper column, and the embedded steel plate (3-1) is provided with shear keys on one side in the prefabricated reinforced concrete frame upper column (3); the shear keys are composed of the mutually perpendicular steel plate two shear key (3-1-1) and the steel plate two shear key (3-1-2) and are welded with the embedded steel plate (3-1); The prefabricated reinforced concrete frame double longitudinal beam (4) is embedded with a embedded steel plate (4-1) at the beam end and welded with a longitudinal steel beam (2LB); the embedded steel plate (4-1) is welded with the longitudinal steel bars of the reinforced concrete frame longitudinal beam, and the embedded steel plate (4-1) is provided with shear keys on one side in the beam; The shear keys are composed of the mutually perpendicular steel plate three shear key (4-1-1) and the steel plate three shear key (4-1-2) and are welded with the embedded steel plate (4-1); The prefabricated reinforced concrete frame cross beam (5) is embedded with a embedded steel plate (5-1) at the beam end and welded with a transverse steel beam (2TB); the embedded steel plate (5-1) is welded with the longitudinal steel bars (5-2) of the reinforced concrete frame cross beam, and the embedded steel plate (5-1) is provided with shear keys on one side in the beam; The shear keys are composed of the mutually perpendicular steel plate four shear key (5-1-1) and the steel plate four shear key (5-1-2) and are welded with the embedded steel plate (5-1). The core area (1) of the prefabricated frame beam-column joint is spliced with the prefabricated reinforced concrete frame lower column (2) and the prefabricated reinforced concrete frame upper column (3) by a steel column, and is spliced with the prefabricated reinforced concrete frame double longitudinal beam (4) and the prefabricated reinforced concrete frame transverse beam (5) by a steel beam; after splicing, a concrete protective layer (7) is poured to protect the spliced structure; After the transverse steel beam one (1TB) and the longitudinal double steel beam one (1LB) of the core area (1) of the prefabricated frame beam-column joint are connected with the bidirectional H-shaped steel column one (1C), the bidirectional H-shaped steel column one (1C), the transverse steel beam one (1TB) and the longitudinal double steel beam one (1LB) are wrapped with a concrete protective layer one (7-1).

2. The prefabricated frame beam-column joint with double longitudinal beams according to claim 1, characterized in that: The bidirectional H-shaped steel column one (1C) of the core area (1) of the prefabricated frame beam-column joint is composed of four flanges (1CF), two webs one (1CW1) and one web two (1CW2); the four flanges (1CF) and the two webs one (1CW1) form two small H-shaped sections, the flanges (1CF) are the two flanges of the longitudinal small H-shaped section, and the webs one (1CW1) are the webs of the longitudinal small H-shaped section; The web two (1CW2) connects the two small H-shaped sections to form a transverse large H-shaped section, the web two (1CW2) is the web of the large H-shaped section, and the two parallel longitudinal small H-shaped sections are the flanges of the transverse large H-shaped section; the web two (1CW2) is provided with bolt holes at the upper and lower ends.

3. The prefabricated frame beam-column joint with double longitudinal beams according to claim 2, characterized in that: The flange (1TBF) of the transverse steel beam one (1TB) of the core area (1) of the prefabricated frame beam-column joint is welded and connected with the flange (1CF) and the web one (1CW1), and the web (1TBW) of the transverse steel beam one is welded with the web one (1CW1).

4. The prefabricated frame beam-column joint with double longitudinal beams according to claim 3, characterized in that: The web two (1CW2) is provided with a horizontal stiffener one (1CS-1) on both sides, the horizontal stiffener one (1CS-1) is aligned with the flange (1TBF) of the transverse steel beam one, and the horizontal stiffener one (1CS-1) is provided with a rectangular hole in the middle; A horizontal stiffener three (1CS-3) is arranged on both sides of the web (1TBW) of the transverse steel beam one.

5. The prefabricated frame beam-column joint with double longitudinal beams according to claim 4, characterized in that: The upper flange (1LBFU), the lower flange (1LBFD) and the web (1LBW) of the longitudinal steel beam one of the longitudinal double steel beam one (1LB) are respectively welded and connected with the flange (1CF) of the bidirectional H-shaped steel column one (1C), wherein the web (1LBW) of the longitudinal steel beam one is centered with the web one (1CW1); The upper flange (1LBFU) of the longitudinal steel beam one is aligned with the horizontal stiffener one (1CS-1), and the lower flange (1LBFD) of the longitudinal steel beam one is aligned with the horizontal stiffener three (1CS-3). The upper flange (1LBFU) of the longitudinal steel beam is a folded plate composed of an inclined plate and a flat plate; the lower flange (1LBFD) of the longitudinal steel beam is a flat plate; The longitudinal steel beam one web (1LBW) is provided with a longitudinal steel beam one stiffener (1LBS) at the junction of the inclined plate and the flat plate of the longitudinal steel beam one upper flange (1LBFU).

6. The prefabricated concrete frame beam-column joint with double longitudinal beams according to claim 5, characterized in that: The two sides of the web two (1CW2) are provided with horizontal stiffeners two (1CS-2), which are aligned with the lower flange (1LBFD) of the longitudinal steel beam, and a rectangular hole is arranged in the middle of the horizontal stiffener two (1CS-2); The web one (1CW1) away from the transverse steel beam one (1TB) is provided with a horizontal stiffener four (1CS-4) and a horizontal stiffener five (1CS-5) on one side, which are aligned with the upper flange (1LBFU) and the lower flange (1LBFD) of the longitudinal steel beam, respectively. The other horizontal stiffener four (1CS-4) on the side is aligned with the lower flange (1TBFD) of the transverse steel beam.

7. The prefabricated concrete frame beam-column joint with double longitudinal beams according to claim 6, characterized in that: The outer ends of the longitudinal steel beam one web (1LBW) and the transverse steel beam one web (1TBW) are provided with bolt holes.

8. The prefabricated concrete frame beam-column joint with double longitudinal beams according to claim 7, characterized in that: The concrete protective layer one (7-1) is poured within a range of 1m above the upper flange of the transverse steel beam one to 1m below the lower flange; The outer edge size of the concrete protective layer one (7-1) is the same as that of the prefabricated reinforced concrete frame lower column (2).

9. The prefabricated concrete frame beam-column joint with double longitudinal beams according to claim 8, characterized in that: The web two (2CW2) of the bidirectional H-shaped steel column two is provided with bolt holes at the upper end; The bidirectional H-shaped steel column two (2C) has the same size and bolt hole arrangement as the bidirectional H-shaped steel column one (1C).

10. The prefabricated concrete frame beam-column joint with double longitudinal beams according to claim 9, characterized in that: The web two (3CW2) of the bidirectional H-shaped steel column three is provided with bolt holes at the lower end; The bidirectional H-shaped steel column three (3C) has the same size and bolt hole arrangement as the bidirectional H-shaped steel column one (1C).

11. The prefabricated concrete frame beam-column joint with double longitudinal beams according to claim 10, characterized in that: The longitudinal steel beam two (2LB) is welded with the embedded steel plate three (4-1), and the longitudinal steel beam two web (2LBW) at the outer end of the longitudinal steel beam two (2LB) is provided with bolt holes; The longitudinal steel beam two (2LB) has the same size and bolt hole arrangement as the longitudinal steel beam one (1LB).

12. The prefabricated concrete frame beam-column joint with double longitudinal beams according to claim 11, characterized in that: The transverse steel beam two (2TB) is welded with the embedded steel plate four (5-1), and the transverse steel beam two web (2TBW) at the outer end of the transverse steel beam two (2TB) is provided with bolt holes; The transverse steel beam two (2TB) has the same size and bolt hole arrangement as the transverse steel beam one (1TB).

13. The prefabricated concrete frame beam-column joint with double longitudinal beams according to claim 12, characterized in that: The connecting plate (6) includes a lower column splicing connecting plate one (6-1) and an upper column splicing connecting plate two (6-2) between the bidirectional H-shaped steel column one (1C) and the bidirectional H-shaped steel column two (2C), a longitudinal beam splicing connecting plate three (6-3) between the longitudinal double-steel beam one (1LB) and the longitudinal steel beam two (2LB), and a transverse beam splicing connecting plate four (6-4) between the transverse steel beam one (1TB) and the transverse steel beam two (2TB). The connecting plate (6) connects the webs between the steel columns and the steel beams, and each end of the connecting plate (6) is provided with a bolt hole, The size, number and position of the bolt hole are the same as those of the corresponding splicing web.

14. The fabricated concrete frame beam-column joint with double longitudinal beams according to claim 13, characterized in that: the lower end of the web two (1CW2) and the upper end of the web two (2CW2) of the bidirectional H-shaped steel column two are spliced by the lower column splicing connecting plate one (6-1), one end of the lower column splicing connecting plate one (6-1) is respectively distributed on both sides of the lower end of the web two (1CW2), and a plurality of reserved bolt holes at one end of the lower column splicing connecting plate one (6-1) are aligned with the reserved bolt holes at the lower end of the web two (1CW2), the other end of the two lower column splicing connecting plate one (6-1) is respectively distributed on both sides of the upper end of the web two (2CW2) of the bidirectional H-shaped steel column two, and a plurality of reserved bolt holes at the other end of the lower column splicing connecting plate one (6-1) are aligned with the reserved bolt holes at the upper end of the web two (2CW2) of the bidirectional H-shaped steel column two, the lower end of the web two (1CW2) and one end of the two lower column splicing connecting plate one (6-1) are fixed by high-strength bolts passing through the reserved bolt holes at one end of the two lower column splicing connecting plate one (6-1) and the lower end of the web two (1CW2) of the bidirectional H-shaped steel column one, wherein the lower end of the web two (1CW2) of the bidirectional H-shaped steel column one is located between one end of the two lower column splicing connecting plate one (6-1), the upper end of the web two (2CW2) of the bidirectional H-shaped steel column two and the other end of the two lower column splicing connecting plate one (6-1) are fixed by high-strength bolts passing through the reserved bolt holes at the other end of the two lower column splicing connecting plate one (6-1) and the reserved bolt holes at the upper end of the web two (2CW2) of the bidirectional H-shaped steel column two, wherein the upper end of the web two (2CW2) of the bidirectional H-shaped steel column two is located between the other end of the two lower column splicing connecting plate one (6-1), the lower end of the flange (1CF) of the bidirectional H-shaped steel column one is welded and spliced with the upper end of the flange (2CF) of the bidirectional H-shaped steel column two, and the lower end of the web one (1CW1) of the bidirectional H-shaped steel column one is welded and spliced with the upper end of the web one (2CW1) of the bidirectional H-shaped steel column two.

15. The fabricated concrete frame beam-column joint with double longitudinal beams according to claim 14, characterized in that: the upper end of the web two (1CW2) and the lower end of the web two (3CW2) of the bidirectional H-shaped steel column three are spliced by the upper column splicing connecting plate two (6-2), and the splicing manner is the same as that of the lower end of the web two (1CW2) of the bidirectional H-shaped steel column one and the upper end of the web two (2CW2) of the bidirectional H-shaped steel column two. The upper end of the flange (1CF) of the bidirectional H-shaped steel column one is welded and spliced with the lower end of the flange (3CF) of the bidirectional H-shaped steel column three, and the upper end of the web (1CW1) of the bidirectional H-shaped steel column one is welded and spliced with the lower end of the web (3CW1) of the bidirectional H-shaped steel column three.

16. The fabricated concrete frame beam-column joint with double longitudinal beams according to claim 15, characterized in that: The webs of the longitudinal steel beam one and the longitudinal steel beam two are spliced by using longitudinal beam splicing connecting plate three (6-3), and the splicing mode is the same as that of the lower end of the web (1CW2) of the bidirectional H-shaped steel column one and the upper end of the web (2CW2) of the bidirectional H-shaped steel column two; and the flanges are spliced by welding.

17. The fabricated concrete frame beam-column joint with double longitudinal beams according to claim 16, characterized in that: The webs of the transverse steel beam one and the transverse steel beam two are spliced by using transverse beam splicing connecting plate four (6-4), and the splicing mode is the same as that of the lower end of the web (1CW2) of the bidirectional H-shaped steel column one and the upper end of the web (2CW2) of the bidirectional H-shaped steel column two; and the flanges are spliced by welding.

18. The fabricated concrete frame beam-column joint with double longitudinal beams according to claim 17, characterized in that: After the splicing of the steel columns and steel beams is completed, a concrete protective layer (7) is cast in each splicing area.

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