CN-121976611-A - Assembled steel structure and installation method

Abstract

The invention relates to the technical field of building industry and discloses an assembled steel structure and an installation method, wherein the assembled steel structure comprises frame columns and frame beams, the frame columns and the frame beams are connected in a matched mode, a modularized node unit is detachably connected with the frame columns and the frame beams respectively, the modularized node unit comprises a first connecting plate and a second connecting plate, one sides, facing away from each other, of the first connecting plate and the second connecting plate are suitable for being connected with one end of an adjacent frame column respectively, a box steel column section is arranged between the first connecting plate and the second connecting plate, two ends of the box steel column section are connected with the first connecting plate and the second connecting plate respectively along the extending direction of the frame columns, I-shaped steel beam ends are arranged on the modularized node unit, and the two I-shaped steel beam ends are connected with two ends of the box steel column section respectively along the extending direction of the frame beams.

Inventors

• XIN RAN
• JIANG LEI
• CHEN XUANQUAN
• ZHAO XIU
• LI XIN
• WU LEI

Assignees

• 中建钢构股份有限公司

Dates

Publication Date

20260505

Application Date

20251212

Claims (10)

1. 1. A fabricated steel structure, comprising: The frame column (2) and the frame beam (3) are connected in a matched mode; The modularized node unit is detachably connected with the frame column (2) and the frame beam (3) respectively and comprises a first connecting plate (4) and a second connecting plate (5), one sides, deviating from each other, of the first connecting plate (4) and the second connecting plate (5) are suitable for being connected with one ends of adjacent frame columns (2) respectively, a box-shaped steel column section (7) is arranged between the first connecting plate (4) and the second connecting plate (5), two ends of the box-shaped steel column section (7) are connected with the first connecting plate (4) and the second connecting plate (5) respectively along the extending direction of the frame beam (3), and two I-shaped steel beam ends (8) are connected with two ends of the box-shaped steel column section (7) respectively.
2. 2. The fabricated steel structure according to claim 1, wherein the modular node units comprise at least one of corner post nodes, side post nodes, center post nodes.
3. 3. The fabricated steel structure according to claim 1, wherein a third connecting plate (10) is arranged between the box steel column section (7) and the first connecting plate (4) and the second connecting plate (5), and the third connecting plate (10) is connected with the first connecting plate (4) and the second connecting plate (5) respectively.
4. 4. A fabricated steel structure according to claim 3, characterised in that a stiffening rib is circumferentially provided between the third connection plate (10) and the box section steel column section (7).
5. 5. The fabricated steel structure according to claim 1, comprising a steel beam end connection plate (6), wherein the i-beam end (8) and the box steel column section (7) are fastened and connected by the steel beam end connection plate (6), and a fourth connection plate (11) is arranged between the i-beam end (8) and the frame beam (3).
6. 6. The method for installing the assembled steel structure is characterized by comprising the following steps of: Prefabricating frame columns (2), frame beams (3) and modularized node units in a factory according to engineering design parameters; Transporting the prefabricated frame column (2), the frame beam (3) and the modularized node unit to a construction site, and installing the frame column (2) in place; connecting the top end of the frame column (2) with the modular node unit; connecting the end of the frame beam (3) with the modular node unit; Detachably connecting the bottom end of the upper frame column (2) with the top end of the modularized node unit; And (5) sequentially assembling the rest modularized node units and the components to finish the installation of the integral steel structure.
7. 7. The method for installing the fabricated steel structure according to claim 6, wherein the prefabricating process of the modularized node unit comprises the steps of fixedly connecting a first connecting plate (4) and a second connecting plate (5) with a third connecting plate (10) on the upper end face and the lower end face of a box steel column section (7), arranging stiffening ribs (9) on the box steel column section (7), connecting an I-shaped steel beam end (8) with the box steel column section (7) through a steel beam end connecting plate (6), and connecting the I-shaped steel beam end (8) with the box steel column section (7) through a fourth connecting plate (11) to form the complete node unit.
8. 8. The method of installing a fabricated steel structure according to claim 6, wherein the releasable connection is a bolted connection.
9. 9. The method for installing the fabricated steel structure according to claim 7, wherein the third connecting plate (10) and the first connecting plate (4) are respectively provided with bolt holes corresponding to the second connecting plate (5), and the end head of the frame beam (3) and the I-shaped steel beam end (8) are provided with matched bolt holes.
10. 10. The method of installing a fabricated steel structure according to claim 6, further comprising the step of post-node reinforcement by removing structural loads, loosening connecting bolts, removing the modular node units, and reinstalling and fixing the node units in place after reinforcing or replacing the node units.

Description

Assembled steel structure and installation method Technical Field The invention relates to the technical field of building industry, in particular to an assembled steel structure and an installation method. Background The steel structure has wide application in domestic and foreign building and bridge structures by virtue of the characteristics of high material strength, light self weight, uniform material, good plasticity and toughness and the like, and has obvious advantages especially in high-rise and super high-rise buildings, large-span and space special-shaped structures. Along with continuous refinement of social division, steel structure engineering also gradually goes to specialized development roads. Meanwhile, in order to adapt to the trend of continuously increasing labor cost and increasingly improving product quality requirements, the steel structure industry is actively combining with informatization, sensing, automation and other technologies, and the traditional manufacturing is pushed to be transformed into intelligent manufacturing. The assembled building is used as an important direction of building industrialization, and the components are prefabricated in a factory and then are assembled on site, so that the assembled building has the advantages of short construction period, standard component size and the like. The current assembly type building mainly comprises prefabricated columns, prefabricated beams, wallboards and the like, and is connected on site through fasteners. However, the existing steel structure node connection is mostly connected by bolts through connecting plates directly welded on the components, and the problems of high processing difficulty, high material waste, low socialization installation degree and the like exist. Especially when being impacted or earthquake acted, the joints of the beam and column and the wallboard are easy to be subjected to axial and radial acting forces, so that the precast beam is subjected to plastic deformation or the connecting piece is damaged, and the components are required to be replaced during maintenance, so that the cost is high and the construction period is long. Disclosure of Invention The invention provides an assembled steel structure and an installation method, which are used for solving the problem of lower installation, transportation and maintenance efficiency caused by the fact that a steel frame structure in the related technology does not have a standardized system. In a first aspect, the present invention provides a fabricated steel structure comprising: the frame column and the frame beam are connected in a matched manner; The modularized node unit comprises a first connecting plate and a second connecting plate, one sides, away from each other, of the first connecting plate and the second connecting plate are suitable for being connected with one ends of adjacent frame columns respectively, box steel column sections are arranged between the first connecting plate and the second connecting plate, two ends of the box steel column sections are connected with the first connecting plate and the second connecting plate respectively along the extending direction of the frame columns, I-steel beam ends are further arranged on the modularized node unit, and two I-steel beam ends are connected with two ends of the box steel column sections respectively along the extending direction of the frame beams. The modular node unit has the beneficial effects that the detachable connection of the frame column and the frame beam is realized by arranging the modular node unit, the problem of inconvenient transportation caused by the integral prefabrication of the traditional node and the main body structure is solved, the space utilization rate during transportation is greatly improved, the logistics cost is reduced, the combined design of the box-type steel column section and the first and second connecting plates is matched with the arrangement of the I-shaped steel beam ends, a stable structural foundation is provided for the connection of the beam column, the rigidity and the mechanical transmission efficiency of the integral structure are ensured, the standardized modular structure realizes standardization and serialization of the component production, and the product precision and the quality consistency are ensured from the source. In an alternative embodiment, the modular node unit includes at least one of a corner post node, a side post node, and a center post node. The modular node unit has the beneficial effects that the modular node unit covers the types of corner column nodes, side column nodes, middle column nodes and the like, can adapt to the installation requirements of different structural positions, widens the application scene of the assembled steel structure, meets the diversified engineering design requirements, does not need to independently design the node structure aiming at different positions, further strengt