CN217500796U - Prefabricated unit of mixed post area bracket of assembled and connected node - Google Patents

Abstract

The utility model discloses a prefabricated unit of assembled hybrid column area bracket and connection. The mixed column with bracket prefabricated unit comprises a reinforced concrete prefabricated structure main body and reinforced and standard steel pipe end structures; the reinforced concrete prefabricated structure main body comprises prefabricated unit concrete, middle and corner longitudinal steel bars, peripheral stirrups and internal stirrups, the standard steel pipe end structure comprises a steel pipe assembly, an annular inner partition plate, vertical stiffening ribs, shear-resistant studs, ear plates and a guide pipe, and the reinforced steel pipe end structure comprises a steel pipe assembly, an annular inner partition plate, vertical stiffening ribs, shear-resistant studs, an opening inner partition plate, a bracket flange, a bracket web, an ear plate and a guide pipe; the upper and lower connection of the two mixing columns adopts a steel pipe concrete structure, and self-compacting concrete is poured into a cavity of the steel pipe; the connection node location is near above the floor. The utility model discloses an assembled mixing column structure atress performance is superior, and the construction is swift, and the technology is ripe, simple, and the quality is controllable, reliable, and it is obvious to synthesize the price/performance ratio advantage.

Description

Prefabricated unit of mixed post area bracket of assembled and connected node

Technical Field

The utility model relates to a building engineering's precast concrete post, in particular to mixed post area bracket prefabricated unit and the enhancement connected node who constitutes thereof.

Background

The assembly structure not only occupies a basic position in an assembly type building integrated system, but also plays a leading role in 'leading-up soldiers' for realizing the building industrialization target. At present, the fabricated structure system mainly takes a fabricated concrete structure and a fabricated steel structure as main components, wherein the technical research and development investment of the fabricated concrete structure is earlier, the policy support is more, and certain progress is achieved, but the control targets of distance quality, environmental protection, efficiency, cost and the like have not small gaps. The technical standard of the fabricated concrete has more limitations compared with the requirements of key parts of a building, such as building height, seismic intensity, a reinforced area at the bottom of a shear wall, a core tube and the like, on the technical standard formulation aspect, compared with a cast-in-place concrete structure, the fabricated concrete has more judicious scientific attitude on the existing fabricated concrete structure technology; in terms of engineering application, the conventional fabricated concrete structure mainly adopts a plane beam-slab system, and a vertical structure system such as a precast concrete wall column is less adopted, so that the overall prefabrication rate and the assembly rate of the fabricated concrete structure are low.

The existing prefabricated concrete structure technology is developed in a split mode around the technical path of 'equal cast-in-place', the existing prefabricated concrete structure can only be infinitely close to cast-in-place 'in theory in terms of structural performance, and the existing prefabricated concrete structure can be close to cast-in-place' in engineering practice according to the existing technical standard and is not easy to realize.

Taking an assembled integral concrete column as an example, the prefabricated column is connected up and down, the concrete part of the prefabricated column consists of a post-pouring area and a plate surface joint grouting layer, and higher requirements are provided for the roughness of a concrete contact surface and a grouting process; the vertical steel bars adopt the connection modes of grouting sleeves, extruding sleeves or slurry anchor lap joint and the like in a limited space, and the strict requirements are put forward on the sleeve quality and the construction precision. The current technical standard suggests that the construction measures of large-diameter longitudinal steel bars, large column sections, arrangement of four corners of longitudinal stress steel bars in a centralized manner, disconnection of longitudinal auxiliary steel bars and the like are adopted to reduce the workload of steel bar connection; construction measures such as adjusting the plane position of the prefabricated column by adopting a jack, adjusting the verticality of the prefabricated column by using a special adjusting tool, plugging the periphery of a column base by adopting a tool type template and the like are adopted to ensure the construction quality of the prefabricated column, and the measures can prove that the prefabricated column is difficult to connect; in addition, compared with a cast-in-place structure, although a series of measures are taken, the structure of the prefabricated column at the beam column node is simplified and even weakened, which is characterized in that the longitudinal steel bars of the top layer column and the longitudinal steel bars of the middle layer end beam can be only anchored in a post-cast area of the node, a plurality of through horizontal construction joints and non-through vertical construction joints are arranged around the frame node, and the connection performance of the frame beam column node is objectively influenced.

The prefabricated column of the existing assembled integral frame structure has the problems of complex connecting node, poor connecting performance, high construction difficulty, difficulty in hidden engineering detection and the like, and the reliability of the prefabricated column connection and the frame node can be reduced in engineering practice, so that the construction efficiency and the engineering quality are influenced. Only by changing the original technical path dependence and developing a high-performance and high-quality assembly type frame structure, the current market dilemma can be got rid of, and the development of assembly type buildings and even the building industrialization is promoted.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the background technology, the utility model aims to provide an assembly type prefabricated column system with superior structural stress performance and good economical efficiency and a set of construction method with mature technology, convenient installation and reliable connection, which solves the problems encountered by the existing assembly type integral frame column in the aspects of design, construction, quality inspection and the like; the realization of control targets of quality, environmental protection, efficiency, cost and the like of the fabricated concrete structure is promoted.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a prefabricated unit of assembled hybrid column area bracket:

the mixed column with bracket prefabricated unit mainly comprises a reinforced concrete prefabricated structure main body, a reinforced steel pipe end structure connected and arranged at the upper end of the reinforced concrete prefabricated structure main body and a standard steel pipe end structure connected and arranged at the lower end of the reinforced concrete prefabricated structure main body;

the reinforced concrete prefabricated structure main body mainly comprises column-shaped prefabricated unit concrete and a reinforcement cage poured and embedded in the prefabricated unit concrete, wherein the reinforcement cage is composed of middle longitudinal reinforcements, corner longitudinal reinforcements, peripheral stirrups and internal stirrups, the four corner longitudinal reinforcements are vertically arranged at four corners inside the prefabricated unit concrete, a plurality of peripheral stirrups are arranged at intervals inside the prefabricated unit concrete along the corner longitudinal reinforcement direction, each peripheral stirrup is arranged around a square ring formed by the four corner longitudinal reinforcements, and each corner longitudinal reinforcement is arranged on the inner side of one corner of the peripheral stirrups and welded with the peripheral stirrups;

the middle parts of the four edges of the peripheral stirrups are respectively provided with two middle longitudinal steel bars which are vertically arranged at intervals, and each middle longitudinal steel bar is positioned at the inner side of the peripheral stirrups and is welded with the peripheral stirrups; the four sides of the peripheral stirrups are divided into two groups of middle sides by taking two sides which are symmetrical at two sides as one, a plurality of internal stirrups are arranged at intervals inside the precast unit concrete along the direction of the middle longitudinal steel bar outside the middle longitudinal steel bar arranged on the middle side of each group, each internal stirrup is arranged around a rectangular ring formed by four middle longitudinal steel bars arranged on one group of middle sides of each internal stirrup, and each middle longitudinal steel bar is arranged at the inner side of one corner of the internal stirrup and is welded with the internal stirrups.

The end structure of the standard steel pipe comprises a standard steel pipe assembly, an annular inner partition plate, a vertical stiffening rib, a shear-resistant stud, an ear plate and a guide pipe; the standard type steel pipe assembly comprises two standard type steel pipe main wall plates and two standard type steel pipe secondary wall plates, wherein the standard type steel pipe main wall plates and the two standard type steel pipe secondary wall plates are wide-width whole plates which are mainly formed by integrally connecting a small plate at one end and a large plate at the other end together.

The two standard type steel pipe main wall plates are arranged on two symmetrical sides of a rectangle, a standard type steel pipe secondary wall plate is respectively connected between two ends of each of the two standard type steel pipe main wall plates, the adjacent standard type steel pipe main wall plates and the large plates of the standard type steel pipe secondary wall plates are welded, the adjacent small plates of the standard type steel pipe main wall plates and the standard type steel pipe secondary wall plates are welded through vertical stiffening ribs, and therefore the two standard type steel pipe main wall plates and the two standard type steel pipe secondary wall plates are used as four sides of the rectangle to alternately enclose a standard type rectangular steel pipe; the inner side surfaces of the standard type steel pipe main wall plate and the standard type steel pipe secondary wall plate are welded with shear-resistant studs; an annular inner partition plate is arranged in the middle of the large plates of the standard type rectangular steel pipe in a surrounding mode, the periphery of the annular inner partition plate is welded with the standard type steel pipe main wall plate and the standard type steel pipe secondary wall plate, and ear plates perpendicular to the surface of the wall plates are fixedly welded on the outer side faces of each standard type steel pipe main wall plate/standard type steel pipe secondary wall plate.

The whole small plates and the large plates of the standard rectangular steel pipes are partially embedded in the prefabricated unit concrete of the reinforced concrete prefabricated structure main body, and the parts, which are not embedded in the prefabricated unit concrete, of the large plates of the two standard rectangular steel pipes enclose a post-pouring space for pouring self-compacting concrete; two standard type steel pipe main wall plates are respectively close to two symmetrical sides of the peripheral stirrups in parallel, two ends of the outer side surface of the large plate of each standard type steel pipe main wall plate are respectively welded with the inner sides of two corner longitudinal reinforcements where the sides of the peripheral stirrups close to the large plate are parallel to the two ends of the outer side surface of the large plate of each standard type steel pipe main wall plate, and the middle parts of the outer side surfaces of the small plates of each standard type steel pipe main wall plate and the steel pipe secondary wall plates are welded with the middle longitudinal reinforcements where the sides of the peripheral stirrups close to the small plates are parallel to the two ends of the small plate of each standard type steel pipe main wall plate; the middle part of the guide pipe is embedded in the end part of the precast unit concrete of the reinforced concrete precast structure main body, one end of the guide pipe penetrates out of the precast unit concrete in the gap between the small plates of the standard rectangular steel pipe, and the other end of the guide pipe penetrates out of the end part of the precast unit concrete of the reinforced concrete precast structure main body and then extends into and is communicated with the post-pouring space.

The lower end of the reinforced concrete prefabricated structure main body is also provided with shear-resistant steel bars which are vertically arranged at four intersections between two corresponding inner stirrups at the middle edges of two groups of peripheral stirrups, each intersection is provided with one shear-resistant steel bar, and the shear-resistant steel bars are positioned at the inner sides close to the center of the prefabricated unit concrete and are welded with the inner stirrups; one end of each shear steel bar is embedded in the precast unit concrete, and the other end of each shear steel bar extends out of the precast unit concrete and then extends into a rear pouring space of the end structure of the standard steel pipe.

The end structure of the reinforced steel pipe comprises a reinforced steel pipe component, an annular inner partition plate, vertical stiffening ribs, shear-resistant studs, an opening inner partition plate, a bracket flange, a bracket web, an ear plate and a guide pipe; the reinforced steel pipe assembly comprises two reinforced steel pipe main wall plates and two reinforced steel pipe secondary wall plates, and the reinforced steel pipe main wall plates and the reinforced steel pipe secondary wall plates are wide-width whole plates mainly formed by integrally connecting a small plate at one end and a large plate at the other end together; the two reinforced steel pipe main wall plates are arranged on two symmetrical sides of the rectangle, a reinforced steel pipe secondary wall plate is respectively connected between two ends of each reinforced steel pipe main wall plate, large plates of adjacent reinforced steel pipe main wall plates and reinforced steel pipe secondary wall plates are welded, small plates of adjacent reinforced steel pipe main wall plates and reinforced steel pipe secondary wall plates are welded through vertical stiffening ribs, and thus the two reinforced steel pipe main wall plates and the two reinforced steel pipe secondary wall plates are used as four sides of the rectangle to alternatively enclose reinforced rectangular steel pipes; shear-resistant studs are welded on the inner side surfaces of the reinforced steel pipe main wall plate and the reinforced steel pipe secondary wall plate.

The middle part of the outer side surface of the large plate of the reinforced rectangular steel pipe is provided with a box bracket connected with the frame beam, in the box bracket, perforated inner baffles are uniformly arranged in the reinforced rectangular steel pipe at the plane where the flanges of the bracket above and below the prefabricated unit concrete are positioned, the periphery of each perforated inner baffle is welded with a main reinforced steel pipe wallboard and a secondary reinforced steel pipe wallboard, and the outer end surface of the perforated inner baffle which is flush with the flange of the bracket below the prefabricated unit concrete and is far away from the prefabricated unit concrete is welded with a shear-resistant bolt; the outer side surface of each reinforced steel pipe main wall plate/reinforced steel pipe secondary wall plate above the box-shaped bracket is fixedly welded with an ear plate which is perpendicular to the surface of the wall plate, and the ear plate is arranged on one side of the box-shaped bracket, which is far away from the reinforced rectangular steel pipe small plate, and is welded with the bracket flange surface of the box-shaped bracket; an annular inner partition plate is arranged in the middle of the reinforced rectangular steel pipe where the lug plates are located, and the periphery of the annular inner partition plate is welded with the reinforced steel pipe main wall plate and the reinforced steel pipe secondary wall plate;

the whole small plates and the parts of the large plates of the two reinforced steel pipe main wall plates and the two reinforced steel pipe secondary wall plates are embedded in the precast unit concrete of the reinforced concrete precast structure main body, and the parts, which are not embedded in the precast unit concrete, of the two reinforced steel pipe main wall plates and the two reinforced steel pipe secondary wall plates enclose a post-pouring space for pouring self-compacting concrete; two reinforced steel pipe main wall plates are respectively close to two symmetrical sides of the peripheral stirrups in parallel, two ends of the outer side surface of the large plate of each reinforced steel pipe main wall plate are respectively welded with the inner sides of two corner longitudinal reinforcements where the edges of the peripheral stirrups close to the reinforced steel pipe main wall plate in parallel are located, and the middle parts of the outer side surfaces of the small plates of each reinforced steel pipe main wall plate and each reinforced steel pipe secondary wall plate are welded with the middle longitudinal reinforcements where the edges of the peripheral stirrups close to the reinforced steel pipe secondary wall plate in parallel are located; the pipe is installed in strenghthened type rectangle steel pipe department at otic placode place, and the space is pour after pipe one end stretches into, and the other end is worn out from the big board of strenghthened type rectangle steel pipe.

The outer side surface of a reinforced rectangular steel pipe where a bracket web plate of the box-shaped bracket connected with the frame beam is also welded with shear-resistant studs.

II, a prefabricated unit of hybrid column strengthens connected node:

the two mixed column bracket prefabricated units are respectively arranged and connected up and down, a floor slab is arranged nearby between the two mixed column bracket prefabricated units, and the connection position is nearby above a floor; the mixed column with bracket prefabricating unit adopts the mixed column with bracket prefabricating unit.

Between two adjacent hybrid column with bracket prefabricated units up and down, the standard steel pipe end structure of the upper hybrid column with bracket prefabricated unit is in butt joint connection with the reinforced steel pipe end structure of the lower hybrid column with bracket prefabricated unit; when the self-compacting concrete post-pouring device is installed on site, each ear plate in the end structure of the standard steel pipe and each ear plate in the end structure of the reinforced steel pipe are respectively aligned and then fixedly connected with a mounting bolt through an ear plate connecting plate, the end edges of the standard rectangular steel pipe in the end structure of the standard steel pipe of the upper hybrid column with bracket prefabricated unit and the end edge of the reinforced rectangular steel pipe in the end structure of the reinforced steel pipe of the lower hybrid column with bracket prefabricated unit are aligned and then welded through a groove weld, two post-pouring spaces of the two hybrid column with bracket prefabricated units are communicated through respective annular inner partition plates and hole grooves in the middles of the perforated inner partition plates to form a post-pouring cavity, and self-compacting concrete is poured in the post-pouring cavity.

The guide pipe in the standard steel pipe end structure of the upper mixed column with the bracket prefabricated unit is a flash guide pipe, the guide pipe in the reinforced steel pipe end structure of the lower mixed column with the bracket prefabricated unit is a feeding guide pipe, self-compacting concrete enters the total post-pouring cavity from the feeding guide pipe, and overflows from the flash guide pipe after the total post-pouring cavity is filled.

The utility model discloses use steel-concrete integrated configuration theory especially steel pipe concrete theory to open up a new way on the vertical connection problem of assembled concrete column as the direction, creatively introduce steel pipe concrete structure as connected node, broken through the technical bottleneck of existing assembled concrete column.

The utility model relates to a fabricated mixed column system (hereinafter referred to as fabricated mixed column) with steel pipe concrete connection nodes, which is suitable for the existing fabricated concrete structure, such as fabricated frame structure, fabricated frame-shear wall structure, etc.; the method can also be used for super high-rise buildings such as an assembled concrete frame-core tube structure, an assembled tube-in-tube structure and the like. The reason that can the universal relevance in various structural style lies in the utility model discloses an assembled hybrid column structural performance can accomplish "being stronger than cast-in-place".

According to the theory of a steel-concrete combined structure, the combined structure can give full play to the mechanical properties of two materials through reasonable combination and collocation, and obtain more excellent structural properties; as a branched steel pipe concrete structure of a combined structure, particularly in a vertical member, two materials of a steel pipe and concrete interact in a stress process, namely the steel pipe restrains core concrete of the steel pipe, so that the concrete is in a complex stress state, the strength of the concrete is improved, and the plasticity and the ductility are improved; meanwhile, due to the existence of the concrete, the local yield of the steel pipe can be delayed or avoided too early, so that the full play of the material performance of the steel pipe can be ensured, the two materials in the concrete-filled steel pipe vertical member mutually make up the weakness of each other, and the advantages of each other are fully played, so that the concrete-filled steel pipe vertical member has higher bearing capacity which is generally higher than the sum of the independent bearing capacities of the steel pipe and the core concrete which form the concrete-filled steel pipe. The steel pipe concrete structure theory is verified through a large number of structure tests and is widely applied to engineering practice.

The utility model discloses a mixing column definable be: the upper end and the lower end are steel pipe concrete and are effectively connected with the middle reinforced concrete section. The hybrid column can be divided into a steel pipe concrete combined section, a steel-concrete combined transition section, a reinforced concrete section and the like according to different stresses and materials. The steel pipe concrete combination section is formed by effectively combining a peripheral rectangular steel pipe with internal concrete through shear-resistant studs, shear-resistant steel bars and an inner partition plate; the steel-concrete combined transition section (or called steel tube anchoring section) is formed by effectively combining a variable-width steel tube wall plate with concrete through shear resistant studs and vertical stiffening ribs, the continuity of column stressed steel bars is ensured by batch welding of column longitudinal steel bars and the steel tube wall plate, the transition section not only solves the anchoring of the steel tube of the combined section, but also slows down the rigidity mutation when the steel tube concrete combined section is transited to a common reinforced concrete section; the reinforced concrete section does not contain steel ribs and has no difference with common reinforced concrete.

Compared with the prior art the utility model has the following characteristics and beneficial effect:

according to the theory of the steel-concrete combined structure, the steel pipe concrete combined section has the highest strength, and the steel-concrete combined transition section has the lowest strength; the utility model discloses the connection of upper and lower extreme takes place in the steel pipe concrete combination section of hybrid column on the assembled hybrid column, and the prefabricated unit tip of hybrid column has the steel pipe that stretches out, leaves the cavity after upper and lower steel pipe butt welding, and the secondary pours into self-compaction concrete into for the construction seam and the band steel sheet butt weld of new and old concrete junction are crisscross, and there is the monolithic steel sheet in the concrete construction seam outside promptly, and there is whole concrete in the steel sheet butt weld inboard, can compensate each other's construction defect, has strengthened the reliability of connection; therefore, the connection performance of the upper end and the lower end of the fabricated mixing column can be ensured to be higher than that of a cast-in-situ reinforced concrete column in theory and practice.

The utility model discloses an important advantage still embodies in the aspect of the construction of assembled hybrid column, from the mill's preparation of the prefabricated unit of hybrid column, the on-the-spot hoist and mount of the prefabricated unit of hybrid column connect, to processes such as formation of assembled hybrid column system, all adopt conventional construction technology and conventional quality testing means, guarantee assembled hybrid column system construction quality.

Welding steel assemblies at the upper end and the lower end of a prefabricated unit of the mixed column, double-side welding or single-side welding of a vertical steel bar and a steel pipe wall plate, binding and spot welding of a steel bar framework in the prefabricated unit, formwork erecting and concrete pouring are all provided with mature construction technologies and detection means; the on-site hoisting connection of the prefabricated unit of the mixed column adopts a plurality of ear plates for temporary fixation, and the upper and lower steel pipe wall plates are butted by groove welding, which is a common steel column construction method; self-compacting concrete is poured in the cavity of the steel pipe, which is a common construction method for the steel pipe concrete structure; therefore, the whole construction process of the assembled hybrid column is mature and simple, strong in controllability and high in reliability. Compared with the existing fabricated concrete structure technology, the method does not need to support, calibrate steel bars, sleeve grouting, slurry anchor lap joint, seam grouting and other complex connecting processes.

The utility model discloses an assembled hybrid column can shorten construction cycle by a wide margin, connects and welds in order to provide required vertical braces during the construction through the otic placode, assembles prefabricated hybrid beam in order to provide required level support during the construction, the assembly and the welding of the prefabricated unit of post that can accomplish earlier from bottom to top pour the self-compaction concrete of pouring in the cavity and cut off otic placode and pipe after total before prefabricated floor is laid. The self-weight and the construction load of the beam column structure during the installation of the hybrid column are jointly borne and transferred by the steel pipes and the connecting lug plates, and the construction of the upper-layer column is not required to be carried out after the self-compacting concrete in the cavity is poured after the lower end of the column prefabricating unit is totally cast to reach the design strength.

The assembled mixing column has good economy and higher comprehensive cost performance. Compared with the existing assembled integral frame column, the assembled mixed column has a part of steel pipe concrete combined connecting nodes, so that the steel consumption is increased. According to the concrete-filled steel tube theory, the concrete-filled steel tube is the most economical in material by taking the condition of meeting the same performance target as a comparison condition; particularly, the assembly type mixing column of the utility model does not need to be supported, does not need complex connecting processes such as sleeve grouting, slurry anchor lapping and seam grouting, can save a part of materials and construction cost, especially has shorter construction period and higher construction efficiency, and can save a large amount of financial cost and labor cost; the price influence factors such as materials, labor and construction period are comprehensively considered, and the cost performance of the fabricated hybrid column is higher than that of the existing fabricated integral frame column.

Compared with the existing assembled steel structure column, the prefabricated unit of the assembled mixed column only comprises part of steel parts at the upper end and the lower end, and the rest of the prefabricated unit is common reinforced concrete, so that the steel consumption is greatly reduced, meanwhile, the exposed surface of the steel parts is less, the coating engineering quantity of corrosion resistance and fire resistance is small, and the economic index advantage is obvious.

Drawings

FIG. 1 is a schematic structural diagram of a prefabricated unit with a bracket of a mixed column.

Fig. 2 is a reinforced connection node of the hybrid column prefabricated unit.

Fig. 3 is a cross-section a-a of fig. 1.

Fig. 4 is a section B-B of fig. 1.

Fig. 5 is a section C-C of fig. 1.

Fig. 6 is a cross-section D-D of fig. 1.

Fig. 7 is a section E-E of fig. 1.

Fig. 8 is a section F-F of fig. 2.

Fig. 9 is a G-G section of fig. 2.

In the figure: precast unit concrete (1), middle longitudinal steel bar (1.1), corner longitudinal steel bar (1.2), peripheral stirrup (1.3), inside stirrup (1.4), shear steel bar (1.5), standard type steel pipe subassembly (2), standard type steel pipe main wall board (2.1), standard type steel pipe secondary wall board (2.2), reinforced type steel pipe subassembly (3), reinforced type steel pipe main wall board (3.1), reinforced type steel pipe secondary wall board (3.2), annular inner baffle (4), vertical stiffening rib (5), shear resistant stud (6), trompil inner baffle (7), bracket flange (8), bracket web (9), otic placode (10), otic placode connecting plate (11), construction bolt (12), self-compaction concrete (13), feed conduit (14), flash pipe (15), groove (16).

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the hybrid column with corbel prefabricating unit mainly comprises a reinforced concrete prefabricated structure main body, a reinforced steel pipe end structure connected and arranged at the upper end of the reinforced concrete prefabricated structure main body, and a standard steel pipe end structure connected and arranged at the lower end of the reinforced concrete prefabricated structure main body.

As shown in fig. 1 and 3, the reinforced concrete prefabricated structure main body mainly comprises a column-shaped prefabricated unit concrete 1 and a reinforcement cage poured and embedded in the prefabricated unit concrete 1, wherein the reinforcement cage is composed of middle longitudinal reinforcements 1.1, corner longitudinal reinforcements 1.2, peripheral stirrups 1.3 and internal stirrups 1.4, the four corner longitudinal reinforcements 1.2 are vertically arranged at four corners inside the prefabricated unit concrete 1, the four corner longitudinal reinforcements 1.2 are vertically and parallelly arranged, a plurality of annular peripheral stirrups 1.3 are uniformly distributed at intervals inside the prefabricated unit concrete 1 along the direction of the corner longitudinal reinforcements 1.2, each peripheral stirrup 1.3 is arranged around a square ring formed by the four corner longitudinal reinforcements 1.2, and each corner longitudinal reinforcement 1.2 is arranged on the inner side of one corner stirrup 1.3 and welded with the peripheral stirrup 1.3;

the middle parts of four edges of the peripheral stirrups 1.3 are respectively provided with two middle longitudinal steel bars 1.1 which are vertically arranged at intervals, and each middle longitudinal steel bar 1.1 is positioned at the inner side of the peripheral stirrups 1.3 and is welded with the peripheral stirrups 1.3; two middle longitudinal reinforcements 1.1 and two corner longitudinal reinforcements 1.2 on each edge of the peripheral stirrup 1.3 are uniformly distributed on the same straight line at intervals. Four sides of peripheral stirrup 1.3 divide into two sets of middle limits with the both sides of symmetry at both sides as one, many annular inside stirrups 1.4 are arranged along the inside interval equipartition of prefabricated unit concrete 1 of middle longitudinal reinforcement 1.1 direction outside the middle longitudinal reinforcement 1.1 that the limit was established in every group, a set of middle limit corresponds arranges an inside stirrup 1.4 altogether, two sets of middle limits correspond arranges two inside stirrups 1.4 altogether, every inside stirrup 1.4 is arranged around the rectangular ring that four middle longitudinal reinforcements 1.1 that self a set of middle limit was established are constituteed, every middle longitudinal reinforcement 1.1 arranges in the inboard of the inside stirrup 1.4 one corner at self place and with inside stirrup 1.4 welding.

As shown in fig. 1 and 4, the standard steel pipe end structure comprises a standard steel pipe assembly 2, an annular inner partition plate 4, vertical stiffeners 5, shear studs 6, ear plates 10 and guide pipes; the standard type steel pipe assembly 2 comprises two standard type steel pipe main wall plates 2.1 and two standard type steel pipe secondary wall plates 2.2, the standard type steel pipe main wall plates 2.1 and the two standard type steel pipe secondary wall plates 2.2 are both wide-width whole plates with small plates at one ends and large plates at the other ends, and the small plates are connected to the upper ends or the lower ends of the large plates on the same plane.

The length dimension of the large plate of the two standard type steel pipe main wall plates 2.1 is larger than that of the large plate of the two standard type steel pipe secondary wall plates 2.2, the two standard type steel pipe main wall plates 2.1 are arranged at two symmetrical sides of a rectangle, one standard type steel pipe secondary wall plate 2.2 is respectively connected between two ends of each standard type steel pipe main wall plate 2.1, the adjacent standard type steel pipe main wall plate 2.1 and the large plate of each standard type steel pipe secondary wall plate 2.2 are welded, the adjacent standard type steel pipe main wall plate 2.1 and the small plate of each standard type steel pipe secondary wall plate 2.2 are welded through a vertical stiffening rib 5, so that the two standard type steel pipe main wall plates 2.1 and the two standard type steel pipe secondary wall plates 2.2 serve as four sides of the rectangle to alternatively enclose a standard type rectangular steel pipe, and the steel plates at two symmetrical sides of each standard type rectangular steel pipe are the same standard type steel pipe main wall plate 2.1 or standard type steel pipe secondary wall plate 2.2; the inner side surfaces of the standard type steel pipe main wall plate 2.1 and the standard type steel pipe secondary wall plate 2.2 are both welded with shear-resistant studs 6, the inner side surfaces of the large plate and the small plate of the standard type steel pipe main wall plate 2.1 and the standard type steel pipe secondary wall plate 2.2 are both fixed with the shear-resistant studs 6, one part of the shear-resistant studs 6 is positioned in the precast unit concrete 1 of the reinforced concrete precast structure main body, and the other part is positioned in a post-pouring space.

An annular inner partition plate 4 is arranged in the middle of the large plate of the standard rectangular steel pipe in a surrounding mode, the periphery of the annular inner partition plate 4 is welded with a standard steel pipe main wall plate 2.1 and a standard steel pipe secondary wall plate 2.2, a square hole groove can be formed in the middle of the annular inner partition plate 4, the radial size of the hole groove in the middle of the annular inner partition plate 4 is larger than the distance between adjacent shear reinforcements 1.5, and the shear reinforcements 1.5 of the prefabricated structure body penetrate through the square hole groove in the middle of the annular inner partition plate 4; and ear plates 10 which are vertical to the surface of the wall plate are welded and fixed in the middle of the outer side surface of each standard type steel pipe main wall plate 2.1/standard type steel pipe secondary wall plate 2.2.

As shown in fig. 1 and 5, the whole small plate and the large plate of the standard rectangular steel pipe are partially embedded in the precast unit concrete 1 of the reinforced concrete precast structure body, the part of the large plate of the standard rectangular steel pipe, which is not embedded in the precast unit concrete 1, encloses a rear casting space for casting the self-compacting concrete 13, and the annular inner partition plate 4 is positioned outside the rear casting space; two standard type steel pipe main wall plates 2.1 are respectively close to two symmetrical sides of a peripheral stirrup 1.3 in parallel, two ends of the outer side surface of a large plate of each standard type steel pipe main wall plate 2.1 are respectively welded with the inner sides of two corner longitudinal steel bars 1.2 where the sides of the peripheral stirrup 1.3 close to the large plate are parallel, and the middle parts of the outer side surfaces of small plates of each standard type steel pipe main wall plate 2.1 and each standard type steel pipe secondary wall plate 2.2 are welded with the middle longitudinal steel bar 1.1 where the sides of the peripheral stirrup 1.3 close to the small plate are parallel; the middle part of the guide pipe is embedded in the end part of the upper end or the lower end of the prefabricated unit concrete 1 of the reinforced concrete prefabricated structure main body, one end of the guide pipe penetrates out of the prefabricated unit concrete 1 in the gap between the small plates of the standard type rectangular steel pipe, and the other end of the guide pipe penetrates out of the end part of the upper end or the lower end of the prefabricated unit concrete 1 of the reinforced concrete prefabricated structure main body and then extends into and is communicated with the post-pouring space.

The standard type steel pipe main wall plate 2.1 and the standard type steel pipe secondary wall plate 2.2 are symmetrically arranged, the inner sides of the wall plates are welded with the anti-shearing studs 6, and a rectangular steel pipe is formed by welding; the rectangular steel pipe is welded with an annular inner partition plate 4 with air holes near the end of the overhanging section outside the precast unit concrete 1, as shown in fig. 5.

As shown in fig. 4, the internal extension sections of the steel pipe primary and secondary wall plates 2.1 and 2.2 in the precast unit concrete 1 are changed in width, the wall plate width is reduced by chamfering, the vertical stiffening ribs 5 are welded near the end parts of the internal extension sections of the wall plates, and the vertical stiffening ribs 5 are arranged in the precast unit concrete 1; welding the middle longitudinal steel bar 1.1 of the prefabricated unit with small plates of the steel pipe primary and secondary wall plates 2.1 and 2.2 at the inward extending section in the prefabricated unit concrete 1; and (3) welding the longitudinal steel bars 1.2 at the corners of the prefabricated units with the large plates of the standard type steel pipe main wall plates 2.1 at the inward extending sections in the prefabricated unit concrete 1.

The steel pipe primary and secondary wallboard 2.1 and 2.2 are provided with peripheral stirrups 1.3 and internal stirrups 1.4 at the internal extension sections of the prefabricated unit concrete 1, the internal stirrups 1.4 penetrate through the steel pipe primary and secondary wallboard 2.1 and 2.2 to be fixed, and shear steel bars 1.5 are welded at the inner sides of four corners of a square grid formed by the intersection of the two internal stirrups 1.4, and the shear steel bars 1.5 extend out of the pouring surface of the prefabricated unit concrete 1, as shown in fig. 1 and 4.

The lower end of the reinforced concrete prefabricated structure main body is also provided with shear steel bars 1.5, the shear steel bars 1.5 are vertically arranged at four intersections between two corresponding inner stirrups 1.4 at the middle edges of two groups of peripheral stirrups 1.3, each intersection is provided with one shear steel bar 1.5, the total number of the shear steel bars is four shear steel bars 1.5, and the shear steel bars 1.5 are positioned at the inner side close to the center of the prefabricated unit concrete 1 and are welded with the inner stirrups 1.4; one end of each shear steel bar 1.5 is embedded in the precast unit concrete 1, and the other end of each shear steel bar extends out of the precast unit concrete 1 and then extends into a rear pouring space of a standard steel pipe end structure.

The end part structure of the reinforced steel pipe comprises a reinforced steel pipe component 3, an annular inner partition plate 4, a vertical stiffening rib 5, a shear-resistant stud 6, an opening inner partition plate 7, a bracket flange 8, a bracket web 9, an ear plate 10 and a guide pipe; the reinforced steel pipe component 3 comprises two reinforced steel pipe main wall plates 3.1 and two reinforced steel pipe secondary wall plates 3.2, the reinforced steel pipe main wall plates 3.1 and the reinforced steel pipe secondary wall plates 3.2 are the whole variable width plates with one small plate and the other large plate, and the small plates are connected to the upper end or the lower end of the large plate on the same plane.

The length dimension of the large plate of the two reinforced steel pipe main wall plates 3.1 is larger than that of the large plate of the two reinforced steel pipe secondary wall plates 3.2, the two reinforced steel pipe main wall plates 3.1 are arranged at two symmetrical sides of a rectangle, a reinforced steel pipe secondary wall plate 3.2 is respectively connected between two ends of the two reinforced steel pipe main wall plates 3.1, the large plates of the adjacent reinforced steel pipe main wall plates 3.1 and the reinforced steel pipe secondary wall plates 3.2 are all welded, small plates of the adjacent reinforced steel pipe main wall plates 3.1 and the reinforced steel pipe secondary wall plates 3.2 are welded through vertical stiffening ribs 5, so that the two reinforced steel pipe main wall plates 3.1 and the two reinforced steel pipe secondary wall plates 3.2 as four sides of the rectangle alternately enclose reinforced rectangular steel pipes, and the symmetrically reinforced steel plates at two sides of the reinforced rectangular steel pipes are the same steel pipe main wall plates 3.1 or reinforced steel pipe secondary wall plates 3.2; shear-resistant studs 6 are welded on the inner side surfaces of the reinforced steel pipe main wall plate 3.1 and the reinforced steel pipe secondary wall plate 3.2, the shear-resistant studs 6 are fixed on the inner side surfaces of the large plate and the small plate of the reinforced steel pipe main wall plate 3.1 and the reinforced steel pipe secondary wall plate 3.2, one part of the shear-resistant studs 6 is located in the precast unit concrete 1 of the reinforced concrete precast structure main body, and the other part of the shear-resistant studs is located in a post-pouring space.

As shown in fig. 1 and 7, a box bracket connected with the frame beam is arranged in the middle of the outer side surface of the large plate of the reinforced rectangular steel pipe, the end part of the box bracket is connected to the outer side surface of the large plate of the reinforced rectangular steel pipe, and the box bracket can be connected to the outer side surface of the large plate of the reinforced steel pipe main wall plate 3.1 or the outer side surface of the large plate of the reinforced steel pipe secondary wall plate 3.2. And one outer side surface of the large plate of the reinforced rectangular steel pipe is connected with the box-shaped bracket, and two sides or a plurality of sides can be provided. If the two sides or the plurality of sides are provided, the box-shaped corbels on the two sides or the plurality of sides are symmetrically arranged.

In the box-shaped bracket, an opening inner partition plate 7 is uniformly arranged in a reinforced rectangular steel pipe at the plane of bracket flanges 8 of the upper and lower prefabricated unit concrete 1, the periphery of the opening inner partition plate 7 is welded with a reinforced steel pipe main wall plate 3.1 and a reinforced steel pipe secondary wall plate 3.2, a circular hole groove can be opened in the middle of the opening inner partition plate 7, and a shear-resistant stud 6 is welded on the outer end face of the opening inner partition plate 7 which is flush with the upper flange of the bracket.

As shown in fig. 1 and 6, the middle parts of the outer side surfaces of each reinforced steel pipe main wall plate 3.1 and each reinforced steel pipe secondary wall plate 3.2 on the box-shaped bracket are fixedly welded with lug plates 10 which are arranged perpendicular to the surface of the wall plate, and the lug plates 10 are arranged on one side of the box-shaped bracket far away from the reinforced rectangular steel pipe small plate and welded with the surface of a bracket flange 8 of the box-shaped bracket; an annular inner partition plate 4 is arranged in the middle of a reinforced rectangular steel pipe where the ear plates 10 are located, the periphery of the annular inner partition plate 4 is welded with a reinforced steel pipe main wall plate 3.1 and a reinforced steel pipe secondary wall plate 3.2, and a square hole groove can be formed in the middle of the annular inner partition plate 4.

The whole small plates and the parts of the large plates of the two reinforced steel pipe main wall plates 3.1 and the two reinforced steel pipe secondary wall plates 3.2 are embedded in the precast unit concrete 1 of the reinforced concrete precast structure main body, the parts of the two reinforced steel pipe main wall plates 3.1 and the parts of the large plates of the two reinforced steel pipe secondary wall plates 3.2 which are not embedded in the precast unit concrete 1 enclose a post-pouring space for pouring the self-compacting concrete 13, and the annular inner partition plate 4 is positioned at the outermost side of the post-pouring space; two reinforced steel pipe main wall plates 3.1 are respectively close to two symmetrical edges of a peripheral stirrup 1.3 in parallel, two ends of the outer side surface of a large plate of each reinforced steel pipe main wall plate 3.1 are respectively welded with the inner sides of two corner longitudinal steel bars 1.2 where the edges of the peripheral stirrup 1.3 close to the large plate are parallel, and the middle parts of the outer side surfaces of small plates of each reinforced steel pipe main wall plate 3.1 and each reinforced steel pipe main wall plate 3.2 are welded with the middle longitudinal steel bar 1.1 where the edges of the peripheral stirrup 1.3 close to the small plate are parallel; the pipe is installed in the strenghthened type rectangle steel pipe department at otic placode 10 place, and the space is pour after pipe one end stretches into, and the other end is worn out from the big board of strenghthened type rectangle steel pipe.

The outer side surface of the reinforced rectangular steel pipe where the box-shaped bracket web 9 is also welded with the shear-resistant studs 6.

The prefabricated unit of the mixed column with the bracket is shown in figure 1, and the end part structure of the reinforced steel pipe is arranged at the upper end. The reinforced rectangular steel pipe surrounded by the reinforced steel pipe main wall plate 3.1 and the reinforced steel pipe secondary wall plate 3.2 by welding penetrates through the bracket of the prefabricated unit to extend upwards, and the annular inner partition plate 4 with the air holes is welded near the end part of the steel pipe extending section outside the prefabricated unit concrete 1.

An opening inner partition plate 7 is respectively welded and arranged in the reinforced rectangular steel pipes at the upper and lower corresponding positions of the bracket flange 8, the opening inner partition plate 7 is provided with pouring holes and air holes, shear-resistant studs 6 are welded on the upper opening inner partition plate 7, and the upper pouring surface of the prefabricated unit concrete 1 is shown in the figures 1 and 6; the bracket flange 8 and the bracket web 9 are welded with the outer side surface of the wall plate of the reinforced rectangular steel pipe, as shown in fig. 1 and 7.

The structure of the inward extending section of the reinforced steel pipe main wall plate 3.1 and the reinforced steel pipe secondary wall plate 3.2 below the lower flange of the bracket is similar to that of the end part of a standard steel pipe, and the connection mode of the inward extending section is the same as that of the longitudinal steel bars 1.1 and 1.2 and the stirrups 1.3 and 1.4 of the prefabricated units; the ear plate 10 at the upper end of the bracket prefabricated unit of the mixing column and the feeding conduit 14 are arranged above the upper flange of the bracket, as shown in figure 1.

In specific implementation, two mixed column bracket prefabricated units are respectively arranged and connected up and down, and the connecting position is near the upper part of a floor; the mixed column with bracket prefabricated unit adopts an assembly type mixed column with bracket prefabricated unit.

As shown in fig. 2, 8 and 9, between two adjacent hybrid column with corbel prefabricated units, the end structures of the standard steel pipes of the upper hybrid column with corbel prefabricated units and the end structures of the reinforced steel pipes of the lower hybrid column with corbel prefabricated units are in butt joint connection; when the self-compacting concrete post-pouring device is installed on site, after being aligned, each ear plate 10 in the end structure of the standard steel pipe and the end structure of the reinforced steel pipe respectively is fixedly connected with a mounting bolt 12 through an ear plate connecting plate 11, the mounting bolt 12 penetrates through the ear plate 10 and the ear plate connecting plate 11 to fixedly connect the ear plate 10 and the ear plate connecting plate 11 together, after being aligned, the end edges of the standard rectangular steel pipe in the end structure of the standard steel pipe of the upper mixed column with bracket prefabricated unit and the end edges of the reinforced rectangular steel pipe in the end structure of the reinforced steel pipe of the lower mixed column with bracket prefabricated unit are welded through a groove welding line 16, two post-pouring spaces of the two mixed column with bracket prefabricated units are communicated through the annular inner partition plate 4 and the hole groove in the middle of the perforated inner partition plate 7 to form a post-pouring cavity, and self-compacting concrete 13 is poured in the post-pouring cavity on site.

The guide pipe in the standard steel pipe end structure of the upper mixed column with bracket prefabricated unit is a flash guide pipe 15, the guide pipe in the reinforced steel pipe end structure of the lower mixed column with bracket prefabricated unit is a feeding guide pipe 14, self-compacting concrete 13 enters the total post-pouring cavity from the feeding guide pipe 14, and overflows from the flash guide pipe 15 after the total post-pouring cavity is filled.

The prefabricated unit reinforced connection joint is mainly constructed by a plurality of prefabricated units of the mixing columns near the upper part of a floor.

In specific implementation, the reinforced connecting joints of the prefabricated units of the mixing columns are shown in fig. 2, and the connection between the standard prefabricated units of the mixing columns can be arranged in the middle of the mixing columns or above floors as required;

when the middle parts of the columns are connected, the lower parts of the columns are mixed column standard prefabricated units, and the upper parts of the columns are mixed column prefabricated units with brackets;

when the prefabricated units are connected above the floors, the lower parts of the prefabricated units are provided with the mixed columns and the brackets, and the upper parts of the prefabricated units are provided with the mixed columns and the brackets;

the connection node is of a steel pipe concrete structure, the overhanging ends of the wall plates of the prefabricated units of the concrete columns are butted by groove welding seams 16, and self-compacting concrete 13 is poured into the cavity after the completion, as shown in figure 2.

Based on the utility model discloses with steel pipe concrete structure as connected node's assembled hybrid column system's construction method, concrete step is as follows:

s1, factory manufacturing process of the mixed column with bracket prefabricated units:

firstly, cutting and chamfering steel pipe main wall plates 2.1 and 3.1 and steel pipe secondary wall plates 2.2 and 3.2, and welding shear-resistant studs 6 on the plates; the perforated inner partition plate 7, the bracket flange 8, the bracket web 9, the annular inner partition plate 4, the vertical stiffening ribs 5, the ear plates 10, the ear plate connecting plates 11, the feeding guide pipes 14 and the flash guide pipes 15 are all processed into steel components which are placed in a classified mode.

Secondly, welding a standard type steel pipe secondary wall plate 2.2 and a vertical stiffening rib 5 by taking the standard type steel pipe main wall plate 2.1 as a main material to form a standard type rectangular steel pipe; the reinforced rectangular steel pipe is surrounded by a reinforced steel pipe main wall plate 3.1 serving as a main material, a reinforced steel pipe secondary wall plate 3.2, a vertical stiffening rib 5, an opening inner partition plate 7, a bracket flange 8 and a bracket web plate 9.

And step three, binding and manufacturing a reinforcement cage, welding the middle longitudinal reinforcement 1.1 and the corner longitudinal reinforcement 1.2 with the steel pipe wall plate, enabling the inner stirrups 1.4 at the inner extension sections of the wall plate to pass through the wall plate for bending connection, welding shear reinforcements 1.5 on the inner sides of four corners of a square grid formed by the crossing of the inner stirrups 1.4, and fixing the shear reinforcements 1.5 with at least two inner stirrups 1.4 in a spot welding manner.

And step four, placing the feeding guide pipe 14 and the flash guide pipe 15, and sealing the pipe orifice.

And fifthly, supporting a matched steel template for pouring the column unit, and embedding the special template into the steel pipes at the upper end and the lower end of the prefabricated unit.

And sixthly, pouring concrete of the column unit, and vibrating to be compact.

And seventhly, demolding after the column unit is molded and cured.

And step eight, welding an annular inner partition plate 4 at the end of the outward extending section of the steel pipe, and welding an ear plate 10 on the wall plate of the steel pipe to finish the prefabricating process of the prefabricated unit with the bracket of the hybrid column.

S2, field assembly process of the fabricated mixing column:

firstly, completing the construction of a cast-in-place embedded and fixed layer in advance, and embedding the steel pipe in place.

Secondly, conveying finished column prefabricated units to a construction site in batches from bottom to top to wait for installation;

and step three, hoisting the initial layer column prefabricating unit, and temporarily fixing the steel pipe at the lower end of the column prefabricating unit with the embedded steel pipe of the cast-in-place embedded layer through the lug plate 10, the lug plate connecting plate 11 and the mounting bolt 12.

And fourthly, vertically connecting the steel pipe at the lower end of the column prefabricating unit with the embedded steel pipe of the cast-in-place embedded layer by adopting a groove weld 16.

And step five, repeating the step two, the step three and the step four to finish the vertical installation of the prefabricated units of the initial layer column.

And step six, hoisting the two-layer beam prefabricated units and the bracket at the top of the column prefabricated unit for assembly to form a stable frame.

And step seven, hoisting the upper layer of column prefabricated unit, repeating the step three to the step six until the top layer of column prefabricated unit, and completing the assembling and welding of the whole frame beam column.

And step eight, pouring self-compacting concrete into the cavity after the lower end of each column prefabricated unit is poured through the feeding guide pipe 14, and stopping pouring when the overflow guide pipe 15 overflows the concrete.

And step nine, when the poured self-compacting concrete reaches 70% of the design strength, removing the mounting bolts and the lug plate connecting pieces on the column prefabricated units, and cutting off the lug plates and the guide pipes to complete the field construction process of the whole fabricated mixed column system.

Claims (8)

1. The utility model provides a prefabricated unit of mixed post area bracket of assembled which characterized in that:

the hybrid column with bracket prefabricated unit mainly comprises a reinforced concrete prefabricated structure main body, a reinforced steel pipe end structure and a standard steel pipe end structure, wherein the reinforced steel pipe end structure is connected and arranged at the upper end of the reinforced concrete prefabricated structure main body;

the reinforced concrete prefabricated structure main body mainly comprises column-shaped prefabricated unit concrete (1) and a reinforcement cage poured and embedded in the prefabricated unit concrete (1), wherein the reinforcement cage is composed of middle longitudinal reinforcements (1.1), corner longitudinal reinforcements (1.2), peripheral stirrups (1.3) and internal stirrups (1.4), the four corner longitudinal reinforcements (1.2) are vertically arranged at four corners inside the prefabricated unit concrete (1), a plurality of peripheral stirrups (1.3) are arranged inside the prefabricated unit concrete (1) along the corner longitudinal reinforcements (1.2) at intervals, each peripheral stirrup (1.3) is arranged around a square ring formed by the four corner longitudinal reinforcements (1.2), and each corner longitudinal reinforcement (1.2) is arranged on the inner side of one corner of the peripheral stirrups (1.3) and welded with the peripheral stirrups (1.3);

the middle parts of four edges of the peripheral stirrups (1.3) are respectively provided with two middle longitudinal steel bars (1.1) which are vertically arranged at intervals, and each middle longitudinal steel bar (1.1) is positioned at the inner side of the peripheral stirrups (1.3) and is welded with the peripheral stirrups (1.3); the four sides of peripheral stirrup (1.3) divide into two sets of middle limits with the both sides of symmetry at both sides as one, many inside stirrups (1.4) of prefabricated unit concrete (1) inside interval arrangement of middle longitudinal reinforcement (1.1) direction of edge outside the middle longitudinal reinforcement (1.1) that the limit was established in every group, every inside stirrup (1.4) is around the rectangular annular arrangement of four middle longitudinal reinforcements (1.1) constitutions that self a set of middle limit was established, every middle longitudinal reinforcement (1.1) is arranged in the inboard of inside stirrup (1.4) a corner and is welded with inside stirrup (1.4).

2. The prefabricated unit of assembled hybrid column with bracket of claim 1, characterized in that:

the standard steel pipe end structure comprises a standard steel pipe assembly (2), an annular inner partition plate (4), vertical stiffening ribs (5), shear-resistant studs (6), an ear plate (10) and a guide pipe; the standard steel pipe assembly (2) comprises two standard steel pipe main wall plates (2.1) and two standard steel pipe secondary wall plates (2.2), wherein the standard steel pipe main wall plates (2.1) and the two standard steel pipe secondary wall plates (2.2) are wide-width whole plates which are mainly formed by integrally connecting a small plate at one end and a large plate at the other end together;

two standard type steel pipe main wall plates (2.1) are arranged on two symmetrical sides of a rectangle, a standard type steel pipe secondary wall plate (2.2) is respectively connected between two ends of each standard type steel pipe main wall plate (2.1), the large plates of the adjacent standard type steel pipe main wall plates (2.1) and the standard type steel pipe secondary wall plates (2.2) are welded, the small plates of the adjacent standard type steel pipe main wall plates (2.1) and the standard type steel pipe secondary wall plates (2.2) are welded through vertical stiffening ribs (5), and thus the two standard type steel pipe main wall plates (2.1) and the two standard type steel pipe secondary wall plates (2.2) are used as four sides of the rectangle to alternatively enclose a standard type rectangular steel pipe; the inner side surfaces of the standard type steel pipe main wall plate (2.1) and the standard type steel pipe secondary wall plate (2.2) are welded with shear resistant studs (6);

an annular inner partition plate (4) is arranged in the middle of the large plates of the standard type rectangular steel pipe in a surrounding mode, the periphery of the annular inner partition plate (4) is welded with a standard type steel pipe main wall plate (2.1) and a standard type steel pipe secondary wall plate (2.2), and ear plates (10) which are perpendicular to the surfaces of the wall plates are fixedly welded on the outer side surfaces of each standard type steel pipe main wall plate (2.1)/standard type steel pipe secondary wall plate (2.2);

the small complete plates and the large plates of the standard rectangular steel pipes are partially embedded in the prefabricated unit concrete (1) of the reinforced concrete prefabricated structure main body, and the parts, which are not embedded in the prefabricated unit concrete (1), of the large plates of the two standard rectangular steel pipes enclose a rear pouring space for pouring self-compacting concrete (13); two standard type steel pipe main wall plates (2.1) are respectively close to two symmetrical sides of the peripheral stirrups (1.3) in parallel, two ends of the outer side surface of the large plate of each standard type steel pipe main wall plate (2.1) are respectively welded with the inner sides of two corner longitudinal reinforcements (1.2) where the sides of the peripheral stirrups (1.3) close to the two ends in parallel, and the middle part of the outer side surface of the small plate of each standard type steel pipe main wall plate (2.1) and the steel pipe secondary wall plate (2.2) is welded with the middle longitudinal reinforcement (1.1) where the sides of the peripheral stirrups (1.3) close to the two ends in parallel are located; the middle part of the guide pipe is embedded in the end part of the precast unit concrete (1) of the reinforced concrete precast structure main body, one end of the guide pipe penetrates out of the precast unit concrete (1) in the gap between the small plates of the standard rectangular steel pipe, and the other end of the guide pipe penetrates out of the end part of the precast unit concrete (1) of the reinforced concrete precast structure main body and then extends into and is communicated with a post-pouring space.

3. The fabricated hybrid modular pillar-belt corbel precast unit of claim 2, wherein:

the lower end of the reinforced concrete prefabricated structure main body is also provided with shear steel bars (1.5), the shear steel bars (1.5) are vertically arranged at four intersections between two corresponding internal stirrups (1.4) at the two groups of middle edges of the peripheral stirrups (1.3), each intersection is provided with one shear steel bar (1.5), the total number of the shear steel bars (1.5) is four, and the shear steel bars (1.5) are positioned at the inner side close to the center of the prefabricated unit concrete (1) and are welded with the internal stirrups (1.4); one ends of four shear steel bars (1.5) are buried in the precast unit concrete (1), and the other ends of the four shear steel bars extend out of the precast unit concrete (1) and then extend into a rear pouring space of a standard steel pipe end structure.

4. The fabricated hybrid modular pillar-belt corbel precast unit of claim 1, further comprising:

the end part structure of the reinforced steel pipe comprises a reinforced steel pipe component (3), an annular inner partition plate (4), a vertical stiffening rib (5), a shear-resistant stud (6), an opening inner partition plate (7), a bracket flange (8), a bracket web (9), an ear plate (10) and a guide pipe; the reinforced steel pipe assembly (3) comprises two reinforced steel pipe main wall plates (3.1) and two reinforced steel pipe secondary wall plates (3.2), and the reinforced steel pipe main wall plates (3.1) and the reinforced steel pipe secondary wall plates (3.2) are wide-width whole plates which are mainly formed by integrally connecting a small plate at one end and a large plate at the other end together;

two reinforced steel pipe main wall plates (3.1) are arranged on two symmetrical sides of a rectangle, a reinforced steel pipe secondary wall plate (3.2) is respectively connected between two ends of the two reinforced steel pipe main wall plates (3.1), large plates of the adjacent reinforced steel pipe main wall plates (3.1) and the reinforced steel pipe secondary wall plates (3.2) are welded, small plates of the adjacent reinforced steel pipe main wall plates (3.1) and the reinforced steel pipe secondary wall plates (3.2) are welded through vertical stiffening ribs (5), and thus the two reinforced steel pipe main wall plates (3.1) and the two reinforced steel pipe secondary wall plates (3.2) as four sides of the rectangle alternately enclose a reinforced rectangular steel pipe; the inner side surfaces of the reinforced steel pipe main wall plate (3.1) and the reinforced steel pipe secondary wall plate (3.2) are welded with shear-resistant studs (6);

the middle part of the outer side surface of a large plate of the reinforced rectangular steel pipe is provided with a box-shaped bracket, perforated inner partition plates (7) are uniformly arranged in the reinforced rectangular steel pipe at the plane where the bracket flanges (8) on the upper part and the lower part of the prefabricated unit concrete (1) are positioned, the periphery of each perforated inner partition plate (7) is welded with a reinforced steel pipe main wall plate (3.1) and a reinforced steel pipe secondary wall plate (3.2), and the outer end surface of each perforated inner partition plate (7) far away from the prefabricated unit concrete (1) is welded with a shear-resistant stud (6); the outer side surface of each reinforced steel pipe main wall plate (3.1)/reinforced steel pipe secondary wall plate (3.2) above the box-shaped bracket is fixedly welded with an ear plate (10) which is perpendicular to the surface of the wall plate, the middle of a reinforced rectangular steel pipe where the ear plate (10) is located is provided with an annular inner partition plate (4), and the periphery of the annular inner partition plate (4) is welded with the reinforced steel pipe main wall plate (3.1) and the reinforced steel pipe secondary wall plate (3.2);

the whole small plates and the parts of the large plates of the two reinforced steel pipe main wall plates (3.1) and the two reinforced steel pipe secondary wall plates (3.2) are embedded in the precast unit concrete (1) of the reinforced concrete precast structure main body, and the parts, which are not embedded in the precast unit concrete (1), of the large plates of the two reinforced steel pipe main wall plates (3.1) and the two reinforced steel pipe secondary wall plates (3.2) enclose a post-pouring space for pouring self-compacting concrete (13); two reinforced steel pipe main wall plates (3.1) are respectively close to two symmetrical sides of the peripheral stirrups (1.3) in parallel, two ends of the outer side surface of the large plate of each reinforced steel pipe main wall plate (3.1) are respectively welded with the inner sides of two corner longitudinal reinforcements (1.2) where the sides of the peripheral stirrups (1.3) close to the side of the reinforced steel pipe main wall plate in parallel, and the middle of the outer side surface of the small plate of each reinforced steel pipe main wall plate (3.1) and the reinforced steel pipe secondary wall plate (3.2) are welded with the middle longitudinal reinforcement (1.1) where the sides of the peripheral stirrups (1.3) close to the side of the reinforced steel pipe secondary wall plate in parallel; the pipe is installed in the strenghthened type rectangle steel pipe department at otic placode (10) place, and the space is pour after pipe one end stretches into, and the other end is worn out from the big board of strenghthened type rectangle steel pipe.

5. The fabricated hybrid modular pillar-belt corbel precast unit of claim 4, wherein:

the outer side surface of the reinforced rectangular steel pipe where the bracket web (9) of the box-shaped bracket is located is also welded with shear-resistant studs (6).

6. The utility model provides a prefabricated unit of hybrid column strengthens connected node which characterized in that:

the two mixed column bracket prefabricated units are respectively arranged and connected up and down, and a floor slab is arranged near the space between the two mixed column bracket prefabricated units; the prefabricated unit of the bracket of the hybrid column belt adopts the prefabricated unit of the bracket of the assembled hybrid column belt of any one of claims 1 to 3.

7. The reinforced connection node of a hybrid column precast unit according to claim 6, wherein:

between two adjacent hybrid column with bracket prefabricated units up and down, the standard steel pipe end structure of the upper hybrid column with bracket prefabricated unit is in butt joint connection with the reinforced steel pipe end structure of the lower hybrid column with bracket prefabricated unit; when the self-compacting concrete post-pouring device is installed on site, after being aligned, each ear plate (10) in the end structures of the standard steel pipe and the reinforced steel pipe is fixedly connected with a mounting bolt (12) through an ear plate connecting plate (11), the end edges of the standard rectangular steel pipe in the end structure of the standard steel pipe of the upper mixed column with bracket prefabricated unit and the end edge of the reinforced rectangular steel pipe in the end structure of the reinforced steel pipe of the lower mixed column with bracket prefabricated unit are aligned and then welded through a groove weld (16), two post-pouring spaces of the two mixed column with bracket prefabricated units are communicated through respective annular inner partition plates (4) and hole grooves in the middles of the hole inner partition plates (7) to form a post-pouring cavity, and self-compacting concrete (13) is poured in the post-pouring cavity.

8. The reinforced connection node of hybrid column prefabricated unit according to claim 6, wherein:

the guide pipe in the standard steel pipe end structure of the mixed column with the bracket prefabricated unit at the upper part is a flash guide pipe (15), the guide pipe in the reinforced steel pipe end structure of the mixed column with the bracket prefabricated unit at the lower part is a feeding guide pipe (14), self-compacting concrete (13) enters the total post-pouring cavity from the feeding guide pipe (14), and overflows from the flash guide pipe (15) after the total post-pouring cavity is filled.

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