Novel assembly type steel structure beam column joint and construction method thereof
Technical Field
The invention relates to the technical field of building type steel beam column joint connection structures, in particular to a novel assembly type steel structure beam column joint and a construction method thereof.
Background
The prior publications disclose or disclose the technical situation used: the existing steel structure beam column joint connection mode is generally welding or bolt connection, the welding connection plasticity and toughness are poor, the stress at the welding seam position is concentrated, the welding quality requirement is high, and the construction quality cannot be guaranteed; the bolt connection needs to be provided with holes, and the cross section of the component is weakened to a certain extent. Both connection methods have defects and may not meet the requirements of structural safety. The invention patent publication number of 'an assembled steel structure beam column node' published by the national intellectual property office in 9/22/2020 is as follows: CN 211548048U, this patent have mainly included node nuclear area and the left and right girder steel and the double web connecting piece that link to each other with it, and left and right girder steel passes through bolted connection with double web connecting piece, later fixed with node nuclear area, and double web connecting piece has reduced the relative displacement between the component with the second welding steel sheet in nuclear area, adopts welding and high strength bolted connection to strengthen the steadiness of node, can be at job site rapid Assembly. This patent is through two web connecting piece connection beam column nodes, has effectively reduced the relative displacement between the component, has strengthened structural integrity. The technical scheme has the defects that beam-column nodes are only connected through the double-web connecting piece, holes are formed in a large number, the weakening of the cross section of a member is large, the rigidity of the nodes is affected, and potential safety hazards exist.
The invention patent publication number of 'steel frame beam column cross-shaped node' issued by 5, 8 and 2019 is as follows: CN111119333A, the patent mainly includes box post and I-beam, the I-beam symmetry welds in box post both sides, the upper and lower flange direction of I-beam is along the column axis direction of box post, be equipped with flange widening portion and flange weakening portion respectively in two I-beams, flange widening portion locates beam column joint department, and flange weakening portion arranges near widening department, has effectively realized moving outward of plastic hinge, has improved the anti-seismic performance of node. This patent is through increasing I-shaped beam flange cross-sectional area at beam column node, improves the bending resistance of node, and then promotes the node bearing capacity. The technical scheme has the defects that the effect of improving the bearing capacity of the node by changing the position of the plastic hinge is limited, the flange width changing part of the I-beam needs to be specially processed, and the processing precision is difficult to guarantee in actual construction.
Based on the technical scheme, the invention designs a novel assembly type steel structure beam-column joint and a construction method thereof so as to solve the problems.
Disclosure of Invention
The invention aims to provide a novel assembly type steel structure beam-column joint and a construction method thereof, and aims to solve the technical problems.
In order to realize the purpose, the invention provides the following technical scheme: the utility model provides a novel assembled steel structure beam column node and construction method thereof, including shaped steel post and a plurality of perpendicular install in the shaped steel roof beam of shaped steel post lateral wall, the outer wall laminating cover of shaped steel post is equipped with the steel sleeve, the shaped steel roof beam tip welds in steel sleeve central zone, equally divide between the both sides top flange of shaped steel post and shaped steel roof beam and do not be connected with the connecting piece that draws to one side, the hole is seted up to the steel sleeve downside to through first connecting plate, high strength bolt, nut with steel sleeve and shaped steel post zonulae occludens.
Preferably, the section steel column is a cross section steel column, and the periphery of the outer wall of the section steel column can be connected with at most four section steel beams.
Preferably, the inside and outside both sides dog-ear in four corners of steel sleeve is provided with second angle steel and first angle steel respectively, the hole is seted up in the steel sleeve dog-ear region, with predetermine the hole first angle steel, second angle steel adopt bolted connection.
Preferably, the two ends of the connecting piece are equally divided into notches, the notches are respectively embedded in the inner side of the upper flange of the section steel beam and the inner side of the flange of the section steel column and are connected through a second connecting steel plate, a high-strength bolt and a nut.
Preferably, the two sides of the lower flange of the section steel beam and the junction of the first connecting steel plate are connected into a whole by the two triangular steel plates through a welding mode.
A construction method of a novel assembly type steel structure beam column joint comprises the following steps:
step 1, processing a steel sleeve, a connecting piece, a first connecting steel plate, a second connecting steel plate, first angle steel and second angle steel, and ensuring that the positions and the intervals for forming holes are accurate;
step 2, nesting the section steel column in the steel sleeve, and reinforcing the outer side of the corner of the steel sleeve by adopting angle steel;
step 3, holes are formed in the corresponding positions of the section steel beams and the section steel columns, and the positions and the intervals of the holes are accurate;
step 4, welding the section steel beam to the center of the side surface of the steel sleeve, and connecting the reinforced section steel beam lower flange by using the first connecting steel plate and the two triangular steel plates through bolts;
and 5, reinforcing the upper flange of the section steel beam by using the connecting piece and the second connecting steel plate through bolt connection.
Compared with the prior art, the invention has the beneficial effects that:
the lateral bending resistance of the section steel column adopted by the invention is superior to that of a common box column, and the mechanical properties of four sides are the same, so that the problem that the steel column beam column node can only effectively utilize two sides is solved; the section steel beam and the section steel column are reinforced through the connecting piece, the steel sleeve and the triangular steel plate, so that the stress can be effectively transmitted, and the bearing capacity of the node is enhanced; the invention can pre-process the connecting piece and the connecting steel plate, only needs to provide the corresponding pore channel on site, increases the reliability of the node by combining bolt connection and welding, and is beneficial to the rapid assembly on the construction site. The invention can be widely applied to steel structure buildings with certain requirements on the anti-seismic performance, is convenient and rapid to construct and install, occupies small space of the connecting piece at the node, and has negligible influence on the internal space of the building.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a plan node elevation view;
FIG. 2 is a left view of a planar node;
FIG. 3 is a plan node top view;
FIG. 4 is a bottom plan nodal view;
FIG. 5 is a plan node elevation view;
FIG. 6 is a spatial node elevation.
In the drawings, the components represented by the respective reference numerals are listed below:
1-section steel beam; 2-section steel column; 3-a connector; 4-a steel sleeve; 5-a first connecting steel plate; 6-a second connecting steel plate; 7-first angle steel; 8-second angle steel; 9-triangular steel plate; 10-high strength bolt; 11-high strength nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a novel assembly type steel structure beam column node and a construction method thereof comprise a section steel column 2 and a plurality of section steel beams 1 vertically arranged on the side wall of the section steel column 2, wherein the section steel column 2 is a cross section steel column, the periphery of the outer wall of the section steel column 2 can be connected and installed with at most four section steel beams 1, the outer wall of the section steel column 2 is fitted and sleeved with a steel sleeve 4, the end part of the section steel beam 1 is welded in the central area of the steel sleeve 4, the inside and outside folded angles of the four corners of the steel sleeve 4 are respectively provided with a second angle steel 8 and a first angle steel 7, the folded angle area of the steel sleeve 4 is provided with a hole, and the first angle steel 7 and the second angle steel 8 which are provided with the hole in advance are connected through bolts so as to restrict the deformation of the steel sleeve 4 and increase the local rigidity;
the two flanges of the section steel column 2 and the upper flanges of the two sides of the section steel beam 1 are respectively connected with a diagonal connecting piece 3, two ends of each connecting piece 3 are respectively provided with a notch, the notches are respectively embedded in the inner side of the upper flange of the section steel beam 1 and the inner side of the flange of the section steel column 2 and are connected through a second connecting steel plate 6, a high-strength bolt 10 and a nut 11, and the upper part of each section steel beam 1 is connected with the section steel column 2 through the two connecting pieces 3, so that stress can be effectively transmitted, a node core area is reinforced, and the overall rigidity is enhanced;
the hole is formed in the lower side of the steel sleeve 4, the steel sleeve 4 is tightly connected with the section steel column 2 through the first connecting steel plate 5, the high-strength bolt 10 and the nut 11, the section steel beam 1 and the first connecting steel plate 5 are connected into a whole through a welding mode by using the two triangular steel plates 9 at the junction of the two sides of the lower flange of the section steel beam 1 and the first connecting steel plate 5, and the interface strength and stability are enhanced.
The invention aims to provide a novel connection scheme of an assembly type steel structure beam column node, which ensures the stability and integrity of the node through various forms, improves the safety performance of the node, restrains the relative displacement between beams and columns by using a connecting piece 3, enhances the local rigidity, and avoids the potential safety hazard of the node caused by local instability, and the construction steps of the assembly type steel structure beam column node are as follows:
step 1, processing a steel sleeve 4, a connecting piece 3, a first connecting steel plate 5, a second connecting steel plate 6, a first angle steel 7 and a second angle steel 8, and ensuring that the positions and the intervals for forming holes are accurate;
step 2, nesting the section steel column 2 in the steel sleeve 4, and reinforcing the outer side of the corner of the steel sleeve 4 by adopting angle steel;
step 3, holes are formed in the corresponding positions of the section steel beam 1 and the section steel column 2, and the positions and the intervals of the holes are accurate;
step 4, welding the section steel beam 1 to the center of the side surface of the steel sleeve 4, and connecting and reinforcing the lower flange of the section steel beam 1 by using a first connecting steel plate 5 and two triangular steel plates 9 through bolts;
and 5, reinforcing the upper flange of the section steel beam 1 by using the connecting piece 3 and the second connecting steel plate 6 through bolt connection.
In the description of the invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "two ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the invention.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the terms in the invention is understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.