阅读说明：本技术 一种基于暗牛腿的装配式梁柱连接节点及其施工方法 (Assembly type beam-column connecting joint based on hidden corbels and construction method thereof ) 是由 戴绍斌 杨航 尚丽诗 于 2021-08-16 设计创作，主要内容包括：本发明公开了一种基于暗牛腿的装配式梁柱连接节点,其特征在于,包括预制柱和两个预制梁,所述预制柱竖直布置,预制柱的两侧设有暗牛腿；所述暗牛腿内下部预埋有下对拉件；所述两个预制梁水平布置,二者顶部标高齐平；两个预制梁的端部分别搭接在预制柱两侧的暗牛腿上,预制梁与预制柱和牛腿之间的缝隙内浇筑有混凝土；两个预制梁的搭接端分别设有预埋型钢,预埋型钢与下对拉件的两端相连；暗牛腿及两个预制梁的底部标高齐平。本发明还提供了一种装配式梁柱连接节点施工方法。本发明的有益效果为：本发明采用梁-柱干式连接和少量湿式连接相结合的节点形式,梁柱节点核心区没有湿作业,工效较高；梁上部纵筋通过套筒贯通,能很好地传递上部弯矩。(The invention discloses an assembled beam-column connecting node based on hidden brackets, which is characterized by comprising a prefabricated column and two prefabricated beams, wherein the prefabricated column is vertically arranged, and the hidden brackets are arranged on two sides of the prefabricated column; a lower counter-pulling part is embedded in the lower part of the inner part of the hidden bracket; the two precast beams are horizontally arranged, and the top elevations of the two precast beams are flush; the end parts of the two precast beams are respectively lapped on the hidden brackets at the two sides of the precast column, and concrete is poured in the gaps among the precast beams, the precast columns and the brackets; the lap joint ends of the two precast beams are respectively provided with embedded section steel, and the embedded section steel is connected with the two ends of the lower counter-pulling piece; the bottom elevations of the hidden bracket and the two precast beams are flush. The invention also provides a construction method of the assembled beam-column connecting joint. The invention has the beneficial effects that: the invention adopts a joint form combining beam-column dry connection and a small amount of wet connection, and the core area of the beam-column joint has no wet operation, thus the work efficiency is higher; the upper longitudinal ribs of the beam are communicated through the sleeve, so that the upper bending moment can be well transferred.)

1. The assembled beam-column connecting joint based on the hidden corbels is characterized by comprising a prefabricated column and two prefabricated beams, wherein the prefabricated column is vertically arranged, and the hidden corbels are arranged on two sides of the prefabricated column; a lower counter-pulling part is embedded in the lower part of the inner part of the hidden bracket; the two precast beams are horizontally arranged, and the top elevations of the two precast beams are flush; the end parts of the two precast beams are respectively lapped on the hidden brackets at the two sides of the precast column, and concrete is poured in the gaps among the precast beams, the precast columns and the brackets; the lap joint ends of the two precast beams are respectively provided with embedded section steel, and the embedded section steel is connected with the two ends of the lower counter-pulling piece; the bottom elevations of the hidden bracket and the two precast beams are flush.

2. The fabricated beam-column connection node as claimed in claim 1, wherein an upper counter-pull member is pre-embedded in the prefabricated column at the upper part of the connection node connection region; the beam tops of the two precast beams are respectively provided with a cast-in-place superposed layer, and the top elevations of the cast-in-place superposed layers are flush; in-layer longitudinal ribs are arranged in the cast-in-situ superposed layer, and the end parts of the in-layer longitudinal ribs in the cast-in-situ superposed layer are respectively connected with two ends of the upper counter-pulling piece.

3. The fabricated beam-column connection node according to claim 1, wherein a beam inner lower longitudinal rib and a beam inner stirrup are arranged in the precast beam, the lower portion of the beam inner stirrup is positioned outside the beam inner lower longitudinal rib, and the upper portion of the beam inner stirrup extends out to be inserted into the interior of the cast-in-place laminated layer and connected with the in-layer longitudinal rib arranged in the cast-in-place laminated layer; and additional steel bars are additionally arranged at the lap joint of the precast beam and the hidden bracket.

4. The assembled beam-column connection node of claim 1, wherein the embedded section steel of the end of the precast beam is bow-shaped, the inner end of the embedded section steel is welded with the end of the longitudinal bar at the lower part in the beam, and the outer end is connected with the lower counter-pulling piece at the lower part in the hidden bracket through the connecting bolt; the pre-buried shaped steel of precast beam tip is the bow type, and the upper portion of pre-buried shaped steel is fixed with the peg, and the lower part of pre-buried shaped steel is seted up jaggedly, pours into the grout material that excels in the breach.

5. An assembled beam-column connection node as defined in claim 4, wherein a stiffening plate is provided under the gap.

6. The fabricated beam-column connection node of claim 1, wherein an in-column longitudinal rib and an in-column stirrup are disposed within the prefabricated column, the in-column stirrup being located outside the in-column longitudinal rib; an inverted U-shaped steel bar is arranged in the hidden bracket; the lap joint face of dark bracket is the horizontal plane, has arranged the rubber support on it, and the tip overlap joint of precast beam is on the rubber support, and hugs closely with the outer wall of precast column.

7. The fabricated beam-column connection node of claim 2, wherein the upper counter-pulling member and the lower counter-pulling member are identical in structure and each comprises a counter-pulling screw and a sleeve provided at an end of the counter-pulling screw, respectively; the embedded profile steel at the end part of the precast beam is connected with a sleeve of the lower counter-pulling piece through a connecting bolt; and the end parts of the in-layer longitudinal ribs in the cast-in-place laminated layer are connected with the straight thread sleeves of the upper counter-pulling pieces after being threaded.

8. A construction method of an assembled beam-column connection node according to any one of claims 1 to 7, characterized by comprising the steps of:

the method comprises the following steps of firstly, manufacturing a prefabricated column, and specifically comprises the following steps: arranging, binding and fixing column inner longitudinal ribs and column inner hoop ribs of the prefabricated column according to the structural design; connecting and fixing the steel bars at the hidden brackets, the sleeves at the corresponding positions of the longitudinal bars at the upper part and the lower part of the beam and the connecting screw rod, plugging the ports of the sleeves by using rubber plugs, and taking anti-rust measures on the surfaces of the sleeves; erecting a column template, pouring concrete, and finishing maintenance;

step two, manufacturing the precast beam, wherein the specific method comprises the following steps: longitudinal bars at the lower part in the beam of the precast beam are designed according to the structure, arranged, bound and fixed; arranging pre-buried section steel according to the design position, welding the pre-buried section steel with the longitudinal bars at the lower part in the beam, and arranging additional steel bars at the end part of the precast beam; erecting a beam template, pouring concrete, and finishing maintenance; and performing rust prevention on the extending part of the stirrup in the precast beam and the exposed part of the embedded section steel.

Step three, installing the precast beam and the precast column on site, wherein the concrete method comprises the following steps: transporting the prefabricated column and the prefabricated beam to a construction site, vertically installing the prefabricated column, hoisting the prefabricated beam to the same height as the hidden bracket on the prefabricated column, then lapping the prefabricated beam on a rubber support of the hidden bracket, and adjusting the position of the prefabricated beam to enable a bolt hole on the embedded steel at the lower part of the prefabricated beam to be aligned to a sleeve opening; binding and fixing the extending part of the longitudinal bar at the lower part in the beam of the precast beam with the in-layer longitudinal bar of the cast-in-place superposed layer, and screwing the in-layer longitudinal bar of the cast-in-place superposed layer into the sleeve after the screw head processing is carried out on the in-layer longitudinal bar; connecting the embedded profile steel with the sleeve by using a connecting bolt; a template is arranged under the gap of the embedded profile steel, and high-strength grouting material is poured; pouring high-strength grouting material into gaps among the precast beams, the precast columns and the brackets; and finally pouring concrete of the cast-in-place laminated layer.

9. The method of constructing an assembled beam-column connection node according to claim 8, wherein in the first step, before pouring the precast column concrete, the sleeve ports are plugged with a rubber plug, and rust prevention is performed on the sleeve surface.

10. The construction method of the assembled beam-column connection node as claimed in claim 8, wherein in the second step, after the precast beam is poured, the extending part of the beam inner stirrup and the exposed part of the embedded steel section are subjected to rust prevention measures.

Technical Field

The invention relates to the technical field of building structures, in particular to an assembled beam-column connecting node based on a hidden corbel and a construction method thereof.

Background

In recent years, the manufacturing mode of the building industry is gradually changed from the traditional cast-in-place concrete mode to the factory prefabrication industrialized production mode. The prefabricated assembly type structure system which is prefabricated in a factory and assembled on site can improve building energy conservation and improve material utilization rate, thereby saving resources and energy, reducing on-site wet operation and accelerating construction speed. Advantages of the fabricated concrete structure include: the product quality is good; secondly, the production efficiency is high; the working condition of workers is good; fourthly, the influence on the environment is small; and is favorable to the sustainable development of society.

In the design scheme of the prefabricated concrete structure, how to design the connecting structure is a crucial ring. The connection construction of the members needs to satisfy the following requirements: firstly, it is to be ensured that the strength of the assembly joint under load cannot be lower than the strength requirements of the structure, secondly it is to be ensured that forces can be transmitted efficiently between the individual components, and finally it is to be as convenient as possible for the site operation. The frame is usually destroyed from the beam column node position, and meanwhile, the beam column node performance is the basic guarantee of the whole performance of the prefabricated concrete frame structure, and the bearing performance of the prefabricated concrete frame structure has a vital significance to the whole structure system.

In engineering practice, the research on the assembled reinforced concrete frame structure and the beam-column joint in the frame structure is still in an exploration stage at present. The connection mode of the beam-column nodes of the fabricated frame structure can be divided into wet connection and dry connection, wherein the wet connection refers to the mode that the beam-column connection adopts on-site post-cast concrete or high-strength grouting material pouring; the dry connection means that the beams and the columns are connected by bolts, welding and other modes without adopting materials such as concrete, grouting material and the like. The beam column joint connection mode widely used in China at present is a post-cast integral joint in wet connection. However, the node type has some problems in actual construction and application:

(1) a cast-in-place section is reserved in a beam-column joint core area, a template is difficult to support, and construction efficiency is low; (2) the beam longitudinal bars in all directions extend into the nodes, and the beam, the column reinforcing steel bars and the orthogonal direction beam reinforcing steel bars often have collision problems and are difficult to avoid; (3) the precast beam needs to be additionally supported temporarily during installation, and a tower crane occupying a long time is needed before the support is in place, so that the utilization rate of the tower crane is reduced.

Therefore, the assembled beam-column node type suitable for the current construction technical environment of China is provided, so that the defects of the post-cast integral node are overcome, and the assembled beam-column node type has important significance for popularization and development of assembled buildings of China.

Disclosure of Invention

The invention aims to provide an assembled beam-column connecting node based on a hidden bracket and a construction method thereof, which have good stress performance and do not have wet operation, aiming at the defects of the prior art.

The technical scheme adopted by the invention is as follows: the assembled beam-column connecting joint based on the hidden corbels is characterized by comprising a prefabricated column and two prefabricated beams, wherein the prefabricated column is vertically arranged, and the hidden corbels are arranged on two sides of the prefabricated column; a lower counter-pulling part is embedded in the lower part of the inner part of the hidden bracket; the two precast beams are horizontally arranged, and the top elevations of the two precast beams are flush; the end parts of the two precast beams are respectively lapped on the hidden brackets at the two sides of the precast column, and concrete is poured in the gaps among the precast beams, the precast columns and the brackets; the lap joint ends of the two precast beams are respectively provided with embedded section steel, and the embedded section steel is connected with the two ends of the lower counter-pulling piece; the bottom elevations of the hidden bracket and the two precast beams are flush.

According to the scheme, an upper counter-pull piece is embedded in the prefabricated column at the upper part of the connection area of the connection node; the beam tops of the two precast beams are respectively provided with a cast-in-place superposed layer, and the top elevations of the cast-in-place superposed layers are flush; in-layer longitudinal ribs are arranged in the cast-in-situ superposed layer, and the end parts of the in-layer longitudinal ribs in the cast-in-situ superposed layer are respectively connected with two ends of the upper counter-pulling piece.

According to the scheme, the precast beam is internally provided with beam inner lower longitudinal ribs and beam inner stirrups, the lower parts of the beam inner stirrups are positioned outside the beam inner lower longitudinal ribs, the upper parts of the beam inner stirrups extend out and are inserted into the cast-in-place laminated layer to be connected with the in-layer longitudinal ribs arranged in the cast-in-place laminated layer; and additional steel bars are additionally arranged at the lap joint of the precast beam and the hidden bracket.

According to the scheme, the embedded section steel at the end part of the precast beam is in an arch shape, the inner end of the embedded section steel is welded with the end part of the longitudinal bar at the lower part in the beam, and the outer end of the embedded section steel is connected with the lower counter-pulling piece at the lower part in the hidden bracket through the connecting bolt; the pre-buried shaped steel of precast beam tip is the bow type, and the upper portion of pre-buried shaped steel is fixed with the peg, and the lower part of pre-buried shaped steel is seted up jaggedly, pours into the grout material that excels in the breach. .

According to the scheme, the lower part of the notch is provided with the stiffening plate.

According to the scheme, column inner longitudinal ribs and column inner stirrups are arranged in the prefabricated columns, and the column inner stirrups are positioned on the outer sides of the column inner longitudinal ribs; an inverted U-shaped steel bar is arranged in the hidden bracket; the lap joint face of dark bracket is the horizontal plane, has arranged the rubber support on it, and the tip overlap joint of precast beam is on the rubber support, and hugs closely with the outer wall of precast column.

According to the scheme, the upper counter-pulling piece and the lower counter-pulling piece have the same structure and respectively comprise counter-pulling screw rods and sleeves arranged at the end parts of the counter-pulling screw rods; the embedded profile steel at the end part of the precast beam is connected with a sleeve of the lower counter-pulling piece through a connecting bolt; and the end parts of the in-layer longitudinal ribs in the cast-in-place laminated layer are connected with the straight thread sleeves of the upper counter-pulling pieces after being threaded.

The invention also adopts a construction method of the assembly type beam-column connecting joint, which comprises the following steps:

the method comprises the following steps of firstly, manufacturing a prefabricated column, and specifically comprises the following steps: arranging, binding and fixing column inner longitudinal ribs and column inner hoop ribs of the prefabricated column according to the structural design; connecting and fixing the steel bars at the hidden brackets, the sleeves at the corresponding positions of the longitudinal bars at the upper part and the lower part of the beam and the connecting screw rod, plugging the ports of the sleeves by using rubber plugs, and taking anti-rust measures on the surfaces of the sleeves; erecting a column template, pouring concrete, and finishing maintenance;

step two, manufacturing the precast beam, wherein the specific method comprises the following steps: longitudinal bars at the lower part in the beam of the precast beam are designed according to the structure, arranged, bound and fixed; arranging pre-buried section steel according to the design position, welding the pre-buried section steel with the longitudinal bars at the lower part in the beam, and arranging additional steel bars at the end part of the precast beam; erecting a beam template, pouring concrete, and finishing maintenance; and performing rust prevention on the extending part of the stirrup in the precast beam and the exposed part of the embedded section steel.

Step three, installing the precast beam and the precast column on site, wherein the concrete method comprises the following steps: transporting the prefabricated column and the prefabricated beam to a construction site, vertically installing the prefabricated column, hoisting the prefabricated beam to the same height as the hidden bracket on the prefabricated column, then lapping the prefabricated beam on a rubber support of the hidden bracket, and adjusting the position of the prefabricated beam to enable a bolt hole on the embedded steel at the lower part of the prefabricated beam to be aligned to a sleeve opening; binding and fixing the extending part of the longitudinal bar at the lower part in the beam of the precast beam with the in-layer longitudinal bar of the cast-in-place superposed layer, and screwing the in-layer longitudinal bar of the cast-in-place superposed layer into the sleeve after the screw head processing is carried out on the in-layer longitudinal bar; connecting the embedded profile steel with the sleeve by using a connecting bolt; a template is arranged under the gap of the embedded profile steel, and high-strength grouting material is poured; pouring high-strength grouting material into gaps among the precast beams, the precast columns and the brackets; and finally pouring concrete of the cast-in-place laminated layer.

According to the scheme, in the first step, before the precast column concrete is poured, the end port of the sleeve is plugged by using a rubber plug, and anti-rust measures are taken on the surface of the sleeve.

According to the scheme, in the second step, after the precast beam concrete pouring is finished, the extending part of the beam inner stirrup and the exposed part of the embedded section steel adopt anti-rust measures.

The invention has the beneficial effects that: the invention adopts a joint form combining beam-column dry connection and a small amount of wet connection, and the core area of the beam-column joint has no wet operation, thus the work efficiency is higher; the upper longitudinal ribs of the beam are communicated through the sleeve, so that the upper bending moment can be well transmitted; the longitudinal bars at the lower part in the beam are connected with the embedded steel sections through connecting bolts, so that the structural requirements are met, the lower bending moment can be transferred, and the stress performance is good; the problem of steel bar collision does not exist during the construction of the beam-column joint core area; the precast beam does not need to be provided with an independent support during installation, and the time of occupying the tower crane is short.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural view of the precast beam in this embodiment.

Fig. 3 is a schematic structural diagram of the prefabricated column in this embodiment.

Fig. 4 is a schematic view of pre-buried section steel in the precast beam in this embodiment.

Fig. 5 is a sectional view taken along line a-a of fig. 4.

Wherein: 1-prefabricated column, 2-upper split screw, 3-sleeve, 4-lower split screw, 5-hidden bracket, 6-prefabricated beam, 7-cast-in-place laminated layer, 8-beam inner lower longitudinal bar, 9-inner longitudinal bar (namely beam upper longitudinal bar), 10-beam inner stirrup, 11-embedded profile steel, 12-notch, 13-gap, 14-wire head, 15-beam inner lower longitudinal bar and embedded profile steel welding section, 16-connecting bolt, 17-rubber support, 18-additional steel bar, 19-bolt, 20-bracket reinforcement, 21-column inner longitudinal bar, 22-column inner stirrup and 23-stiffened plate.

Detailed Description

For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.

The assembled beam-column connection node based on the hidden corbels 5 as shown in fig. 1 comprises a prefabricated column 1 and two prefabricated beams 6, wherein the prefabricated column 1 is vertically arranged, and the hidden corbels 5 are arranged on two sides of the prefabricated column 1; a lower counter-pulling part is embedded in the lower part of the inner part of the hidden bracket 5; the two precast beams 6 are horizontally arranged, and the top elevations of the two precast beams are flush; the end parts of the two precast beams 6 are respectively lapped on the hidden brackets 5 at two sides of the precast column 1, and concrete is poured in a gap 13 between the precast beam 6 and the precast column 1 and the hidden brackets; the lap joint ends of the two precast beams 6 are respectively provided with embedded section steel 11, and the embedded section steel 11 is connected with the two ends of the lower counter-pulling piece; the bottom elevations of the hidden corbels 5 and the two precast beams 6 are flush.

In the invention, an upper counter-pull piece is pre-embedded in a prefabricated column 1 at the upper part of a connection node connection area; the beam tops of the two precast beams 6 are respectively provided with a cast-in-place superposed layer 7, and the top elevations of the cast-in-place superposed layers 7 are level; an in-layer longitudinal rib 9 (namely a beam upper part longitudinal rib) is arranged in the cast-in-situ superposed layer 7, and the end parts of the in-layer longitudinal rib 9 in the cast-in-situ superposed layer 7 are respectively connected with two ends of the upper counter-pulling piece.

Preferably, the precast beam 6 is internally provided with an inner lower longitudinal beam rib 8 and an inner beam stirrup 10, the lower part of the inner beam stirrup 10 is positioned outside the inner lower longitudinal beam rib 8, the upper part of the inner beam stirrup 10 extends out, and the extending part is inserted into the cast-in-place laminated layer 7 and is connected with the inner longitudinal beam 9 arranged in the cast-in-place laminated layer 7; an additional steel bar 18 is additionally arranged at the lap joint of the precast beam 6 and the hidden bracket 5; the inner end of the embedded steel 11 is welded with the end of the longitudinal bar 8 at the lower part in the beam (as shown in fig. 1, the welding section 15 of the longitudinal bar 8 at the lower part in the beam and the embedded steel 11), and the outer end of the embedded steel 11 is connected with the lower counter-pulling piece at the lower part in the hidden bracket 5 through the connecting bolt 16. The embedded section steel 11 at the end part of the precast beam 6 is in a bow shape, a stud 19 is fixed at the upper part of the embedded section steel 11, a gap 12 is formed at the lower part of the embedded section steel 11, and high-strength grouting material is poured into the gap 12; and a stiffening plate 23 is arranged at the lower part of the notch 12.

Preferably, an inner column longitudinal rib 21 and an inner column hoop rib 22 are arranged in the prefabricated column 1, and the inner column hoop rib 22 is positioned outside the inner column longitudinal rib 21. The hidden corbel 5 is internally provided with an inverted U-shaped steel bar (namely a corbel reinforcing bar 20); the lap joint face of the hidden bracket 5 is a horizontal plane, a rubber support 17 (with adjustable height) is arranged on the horizontal plane, the end part of the prefabricated beam 6 is lapped on the rubber support 17 and is tightly attached to the outer wall of the prefabricated column 1, and concrete is poured in a gap 13 between the prefabricated beam 6 and the bracket and between the prefabricated column 1.

In the invention, the upper counter-pulling piece and the lower counter-pulling piece have the same structure and respectively comprise counter-pulling screw rods and sleeves 3 (preferably straight thread sleeves) arranged at the end parts of the counter-pulling screw rods. The embedded profile steel 11 at the end part of the precast beam 6 is connected with the sleeve 3 of the lower counter-pulling piece through a connecting bolt 16; the end parts of the in-layer longitudinal ribs 9 in the cast-in-place superposed layers 7 are connected with the sleeve 3 of the upper counter-pulling piece after being threaded. In the embodiment, the upper counter-pulling piece is correspondingly provided with an upper counter-pulling screw rod 2, and the lower counter-pulling piece is correspondingly provided with a lower counter-pulling screw rod 4; the split screw can also be replaced by a steel bar.

In this embodiment, the column inner longitudinal rib 21 and the column inner hoop rib 22 of the prefabricated column 1 are calculated specifically according to actual engineering. The hidden bracket 5 is of a reinforced concrete structure, the cantilever length of the hidden bracket is preferably 150-200 mm, and the height of the hidden bracket 5 is calculated according to actual engineering. The end part of the precast beam 6 is matched with the hidden bracket 5, namely, the end part of the precast beam 6 is of an inverted ladder-shaped structure, the retraction length of the end part of the precast beam is consistent with the extension length of the hidden bracket 5, and the height of the end part of the precast beam 6 is consistent with the extension height of the hidden bracket 5; the beam inner stirrups 10 at the end portions of the precast beams 6 need to be appropriately reinforced according to the actual engineering. The sleeve 3 is pre-embedded in the prefabricated column 1, a joint I grade is selected as the joint grade, and the surface of the sleeve 3 needs to be provided with antirust measures and meets the relevant requirements of the technical specification for mechanical connection of reinforcing steel bars (JGJ 107-; before the precast column 1 pours concrete, the rubber plug is adopted to plug the opening of the sleeve 3, so as to prevent the concrete from pouring into the sleeve 3. When the in-layer longitudinal bars 9 in the cast-in-place laminated layer 7 or the connecting bolts 16 of the end parts of the precast beams 6, which are connected with the embedded section steel 11, are connected with the sleeve 3, the connecting bolts are tightly propped against each other at the central position of the sleeve 3, and the length of the sleeve 3 is determined by the strength of the steel bars and the diameter of the steel bars according to relevant regulations in sleeve 3 for steel bar mechanical connection (JG/T163-2013). The extending part of the stirrup 10 in the beam of the precast beam 6 needs to be provided with rust prevention measures, and the length of the extending part of the stirrup can ensure the thickness of the protective layer of the steel bar after the cast-in-place laminated layer 7 is poured. The embedded steel 11 at the end part of the precast beam 6 is welded with the longitudinal bar 8 at the lower part in the beam, the strength of a welding line is ensured to be not lower than the yield strength of the longitudinal bar 8 at the lower part in the beam, the exposed part of the embedded steel 11 is subjected to rust prevention measures, the thickness and the material of the embedded steel 11 are determined according to calculation, the width of a gap 12 with the downward embedded induction is preferably about 150mm, and the high-strength grouting material is poured into the gap 12 of the steel.

A construction method of the fabricated beam-column connection node comprises the following steps:

step one, manufacturing a prefabricated column 1. The specific method comprises the following steps:

according to the structural design, arranging, binding and fixing an in-column longitudinal rib 21 and an in-column hoop rib 22 of the prefabricated column 1; then, connecting and fixing the steel bars in the hidden brackets 5, the sleeves 3 at the corresponding positions of the upper and lower longitudinal bars of the beam and the connecting screw rods, plugging the openings of the sleeves 3 by using rubber plugs, and taking rust prevention measures on the surfaces of the sleeves 3; and erecting a column template, pouring concrete, and finishing maintenance.

And step two, manufacturing the precast beam 6. The specific method comprises the following steps:

according to the structural design, longitudinal bars 8 at the lower part in the beam of the precast beam 6 are arranged, bound and fixed; arranging the embedded profile steel 11 according to the design position, welding the embedded profile steel 11 with the longitudinal bar 8 at the lower part in the beam, and arranging the additional steel bar 18 at the end part of the precast beam 6; erecting a beam template, pouring concrete, and finishing maintenance; and (3) performing rust prevention on the extending part of the beam inner stirrup 10 of the precast beam 6 and the exposed part of the embedded steel section 11.

And step three, field installation. The specific method comprises the following steps:

the prefabricated column 1 and the prefabricated beam 6 which are prefabricated are transported to a construction site, the prefabricated column 1 is vertically installed, the prefabricated beam 6 is hoisted to the same height as the hidden bracket 5 on the prefabricated column 1 and then is lapped on a rubber support 17 of the hidden bracket 5, and the position of the prefabricated beam 6 is adjusted, so that bolt holes in the embedded steel 11 on the lower part of the prefabricated beam 6 are aligned to the opening of the sleeve 3; binding the extending part of the beam inner lower longitudinal bar 8 of the precast beam 6 in the stirrup of the cast-in-place superposed layer 7, carrying out screw head processing on the in-layer longitudinal bar 9 of the cast-in-place superposed layer 7, and screwing the screw head 14 into the sleeve 3; connecting the embedded steel 11 with the sleeve 3 by using a connecting bolt 1616; a template is arranged under the notch 12 of the embedded profile steel 11, and high-strength grouting material is poured; pouring high-strength grouting material into gaps 13 between the precast beam 6 and the precast columns 1 and between the precast beams and the brackets; and finally pouring concrete of the cast-in-place laminated layer 7.

The first step and the second step are not in sequence.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or equivalent substitutions of some technical features, but any modifications, equivalents, improvements and the like within the spirit and principle of the present invention shall be included in the protection scope of the present invention.