CN111042438A - Partially-filled concrete combined honeycomb steel beam and column and manufacturing method thereof - Google Patents
Partially-filled concrete combined honeycomb steel beam and column and manufacturing method thereof Download PDFInfo
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Abstract
The invention relates to a partially filled concrete combined honeycomb steel beam and column and a manufacturing method thereof, wherein the method comprises the following steps: h shaped steel, stirrup, indulge the muscle, be provided with oval hole on the H shaped steel web, the stirrup passes oval hole, indulge the muscle and pass the stirrup ligature on the stirrup, fill in the oval hole has the concrete. The concrete composite steel honeycomb beam and the concrete composite steel honeycomb column are partially filled, holes reserved in the web plate save steel, and meanwhile, the cost is reduced; in the aspect of processing, the holes are reserved, so that the hoop reinforcements, the longitudinal reinforcements and the side pouring concrete can be formed at one time, the manufacturing is convenient, and the time is saved; the concrete on the two sides of the web plate can be integrated due to the reserved holes, the integrity is good, the concrete is well combined with the H-shaped steel honeycomb beam and the H-shaped steel honeycomb column, and simultaneously, the studs or steel tie pieces are saved; meanwhile, the concrete part can be anticorrosive and fireproof, and plays a role in protecting H-shaped steel honeycomb beams and columns; the plugging materials in the spaces of the steel beam, the column flange and the web plate during decoration are saved, the labor is saved, and the cost is reduced.
Description
Technical Field
The invention belongs to the field of building structures and assembled structural members, and particularly relates to a partially-filled concrete combined honeycomb steel beam and column and a manufacturing method thereof.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The traditional PEC beams and columns adopt H-shaped steel or hot-rolled thin-walled steel plate combined sections, transverse tie bars with certain intervals are arranged between flanges and webs, and concrete is poured to form the combined beams and columns; and traditional PEC roof beam, post need pour the concrete respectively in web both sides in prefabricating, and the preparation is inconvenient, and production cycle is long, and the concrete of traditional PEC roof beam, post is not good with girder steel, post combination, needs preset drawknot spare or toggle pin.
Furthermore, the inventor finds that: the traditional steel honeycomb beam and column are easy to generate buckling deformation of webs, so that the bending rigidity and the bending bearing capacity are small, the comfort degree is slightly poor, the corrosion is easy, and the fire resistance is poor.
Disclosure of Invention
In order to overcome the problems, the invention provides the partially filled concrete combined honeycomb steel beam and column and the manufacturing method thereof, and the honeycomb steel beam and column has the advantages of material saving, cost reduction, convenience in manufacturing, good combination of concrete and steel, and good corrosion resistance and fire resistance.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a partially filled concrete combined honeycomb steel beam and column, comprising: h shaped steel, stirrup, indulge muscle, concrete are provided with forms hole such as ellipse or circular, square, rhombus on the H shaped steel web, and the stirrup passes the hole is indulged the muscle and is passed the stirrup and the ligature forms framework of steel reinforcement on the stirrup, hole and web both sides are filled there is the concrete.
The invention discovers that: holes are formed in the web plate of the H-shaped steel, concrete is filled into the holes to form the combined steel honeycomb beam and the combined steel honeycomb column, and partial steel is saved due to the reserved holes in the web plate; in the aspect of processing, the stirrup with the hole is convenient to install, so that the stirrup, the longitudinal bar and the side casting concrete can be molded at one time when the stirrup and the longitudinal bar are placed, the manufacturing is convenient, and the time is saved; the concrete on the two sides of the web plate is integrated due to the reserved holes, the integrity is good, the concrete is well combined with the H-shaped steel honeycomb beam and the H-shaped steel honeycomb column, and the studs or steel tie pieces are saved; meanwhile, the concrete part can be anticorrosive and fireproof, the H-shaped steel honeycomb beam and the column are protected, plugging materials in the spaces of the steel beam, the column flange and the web plate during decoration are omitted, labor is saved, and the cost is reduced. Meanwhile, the integral stability and the bearing capacity of the honeycomb steel beam and the honeycomb steel column are enhanced.
The numerical simulation and analysis on the partially filled concrete combined honeycomb steel beam find that: the long axis of the oval hole is vertically arranged, so that the bending rigidity and the bending bearing capacity of the composite beam can be improved, the area of the hole is increased, and steel can be saved. Therefore, in some embodiments, the long axis direction of the oval holes is perpendicular to the flange plate of the H-shaped steel, which can effectively improve the overall strength of the honeycomb steel beam.
The technical requirements on the strength, the size and the like of the steel beam are different under different working conditions. Therefore, the invention carries out system research on the size and the space of the oval holes of the honeycomb steel beam to discover that: the long axis a of the orifice is preferably 0.6-0.9 times of the height of the beam; the ratio of the minor axis b to the major axis a of the elliptical hole is preferably 0.2 to 1; the distance between the outer edges of adjacent orifices is preferably 0.2 to 0.9 times the minor axis b; and should not open at the beam ends in a range corresponding to the beam height.
The stirrups are mainly used for meeting the shear strength of the oblique section and are connected with stressed longitudinal bars to form a steel reinforcement framework. Thus, in some embodiments, the stirrups may be closed rectangular stirrups, diamond stirrups, polygonal stirrups, well-shaped stirrups, circular stirrups, and the like. However, the research of the invention finds that: the rectangular stirrups are more convenient to set. Thus, in some preferred embodiments, the stirrup is rectangular.
Because the span of the steel beam and the column and the load to be borne are large in the building structure, in order to ensure the overall strength and the structural stability of the building, in some embodiments, the H-shaped steel adopts Q235B and above grade steel, and the strength, the rigidity and the stability requirements of the honeycomb steel beam and the column are met through the strength of the steel.
In the present invention, the sectional forms of the beam and the column are not particularly limited, and an H-shaped section, a box-shaped section, a rectangular section, a T-shaped section, a cross-shaped section, a mouth-shaped section, an irregular section, and the like can be used.
The concrete of the present invention is not particularly limited in its type, and may be any concrete material that can satisfy the basic requirement of casting, and therefore, in some embodiments, the concrete is ordinary concrete or lightweight aggregate concrete.
The invention also provides a manufacturing method of the partially filled concrete combined honeycomb steel beam and column, which comprises the following steps:
vertically placing the H-shaped steel provided with the oval holes, arranging stirrups, penetrating longitudinal bars, and binding the stirrups and the longitudinal bars;
and laterally placing the steel beam and the column, arranging baffle plates at the design positions of the two ends of the steel beam and the column, pouring concrete, and curing until demolding is carried out.
The invention also provides the application of any one of the partially filled concrete combined honeycomb steel beam and column in the construction of plants, working platforms, low-rise and multi-rise buildings, bridges or tunnels.
The invention has the beneficial effects that:
(1) the invention partially fills the concrete combined steel honeycomb steel beam and the column, and the holes reserved in the web save steel; in the aspect of processing, the holes are reserved, so that the hoop reinforcements, the longitudinal reinforcements and the side pouring concrete can be formed at one time when the hoop reinforcements, the longitudinal reinforcements and the side pouring concrete are placed, the manufacturing is convenient, and the time is saved; the concrete on the two sides of the web plate can be integrated due to the reserved holes, the integrity is good, the concrete can be well combined with the H-shaped honeycomb steel beam and the column, and simultaneously, the studs or steel tie pieces are saved; in addition, the concrete part can be anticorrosive and fireproof, and plays a role in protecting H-shaped honeycomb beams and columns; the plugging materials in the spaces of the steel beam, the column flange and the web plate during decoration are saved, the labor is saved, and the cost is reduced.
(2) Holes are reserved in the H-shaped honeycomb steel beams and columns, steel is saved, the integrity of filled reinforced concrete is good, the bending rigidity, the bending resistance and the shearing resistance are improved, and the comfort level is good;
(3) when concrete is poured, a pulling piece is not needed, and the concrete on the two sides becomes a whole;
(4) when prefabricating, placing the H-shaped steel honeycomb beam and the column side with pouring concrete, and forming at one time;
(5) the invention has simple structure, low cost, strong practicability and easy large-scale production.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic vertical view of the H-shaped honeycomb steel beam and column of example 1;
FIG. 2 is a schematic side elevation view of an H-shaped honeycomb steel beam and column of example 1;
FIG. 3 is a schematic vertical view of a partially filled concrete combined honeycomb steel beam and column of example 1;
FIG. 4 is a schematic side elevation view of a partially filled concrete composite honeycomb steel beam, column of example 1;
figure 5 is a schematic view of a partially filled concrete composite honeycomb steel beam of example 1.
Wherein:
1-steel beam flanges; 2-steel beam web; 3-elliptical hole; 4-longitudinal ribs; 5-stirrup; 6-filling concrete.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprises" and "/" or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and "/" or a combination thereof.
As introduced by the background art, the PEC beam and the PEC column are not convenient to manufacture and high in cost due to the fact that stirrups need to be welded and concrete is poured on two sides at present. Therefore, the invention provides a partially filled concrete combined honeycomb steel beam and column, which comprises an H-shaped honeycomb steel beam, a column, filled concrete, stirrups, longitudinal bars and a manufacturing method.
1. The H-shaped honeycomb steel beam and the H-shaped honeycomb steel column are made of Q235B or above-grade steel. The web plates of the H-shaped honeycomb steel beam and the column are provided with elliptical holes, the long axis direction of the elliptical holes is perpendicular to the flange plate, and the size and the distance of the elliptical holes are determined according to the shearing resistance bearing capacity of the web plates.
2. The filling concrete is common concrete or light aggregate concrete.
3. The stirrups adopt a closed rectangular shape, and the closed stirrups penetrate through the H-shaped honeycomb steel beam and the cylindrical web elliptical hole. The longitudinal bars pass through the stirrups and are bound on the stirrups.
4. During the factory's preparation, put H type honeycomb girder steel, post immediately, place the closed stirrup, wear to establish vertical muscle, then put girder steel, post side on the mould bench and set up the baffle at girder steel, post both ends, concreting, maintenance to the drawing of patterns.
The invention is described below by means of specific examples.
Example 1:
a partially filled concrete composite honeycomb steel beam comprising: h shaped steel, stirrup, indulge the muscle, be provided with oval hole on the H shaped steel web, the stirrup passes oval hole, indulge the muscle pass the stirrup ligature on the stirrup oval hole intussuseption is filled with the concrete.
1. The H-shaped steel honeycomb beam is made of Q235B and above-grade steel. The web plate of the H-shaped steel honeycomb beam is provided with an oval hole, and the long axis direction of the oval hole is vertical to the flange plate.
2. The filling concrete is common concrete or light aggregate concrete.
3. The stirrups adopt a closed rectangular shape, and the closed stirrups penetrate through the oval holes of the web plate of the H-shaped honeycomb steel beam. The longitudinal bars pass through the stirrups and are bound on the stirrups.
4. During the mill's preparation, put H type honeycomb girder steel immediately, place the closed stirrup, wear to establish and indulge the muscle, then put the girder steel side on the mould bench and set up the baffle at the girder steel both ends, pour the concrete, the maintenance is to the drawing of patterns.
The invention calculates the bearing capacity of a partially filled concrete combined honeycomb steel beam (PEC honeycomb steel beam for short) as follows:
the PEC honeycomb steel beam shown in fig. 1 to 5 has the structural steel size of H200 × 100 × 6 × 8, the steel material of Q235B, the elliptical hole size of 160mm for the major axis, 80mm for the minor axis, 40mm for the hole edge clear distance, C30 for the filled concrete, HRB400 for the longitudinal steel bars and 12mm for the diameter steel bars, two reinforcement bars are respectively arranged at the top and bottom, the stirrups are HPB300 for the diameter steel bars, and the bearing capacity is calculated according to the simply supported beam with the calculated span of 4 m.
The method comprises the steps of firstly calculating the section characteristics of the H-shaped steel, calculating the bearing capacity of the steel beam according to the limit state of the H-shaped steel beam, and correspondingly filling concrete due to holes formed in a web plate, and performing corresponding reduction during calculation. The concrete part can also be used for bearing, the bearing capacity of the concrete part is calculated according to the specification, and finally the concrete part and the section steel part can be considered to bear the load together.
(1) Basic parameters
Design values of bending resistance, tensile strength and pressure strength of the steel beam are as follows: 215N/mm2
Shear strength design value: f. ofv＝125N/mm2
C30 concrete:
designed axial compressive strength value: f. ofc＝14.3N/mm2
Design value of axial tensile strength: f. oft＝1.43N/mm2
HRB400 steel bar tensile strengthDesign value fy＝360N/mm2
(2) Cross sectional property
Solid web steel beam:
section moment of inertia:
cross-sectional moment of resistance: wx＝1.787×105mm3
Calculating area moment of the cross section to the neutral axis:
Sx＝8×100×96+6×92×46＝102192mm3
opening a steel beam:
I＝I1+I2＝7.90×106mm4
section moment of inertia: i isx＝2I＝1.58×107mm4
Cross-sectional moment of resistance: wx＝1.65×105mm3
(3) Calculation of solid web girder bearing capacity
Bending resistance and bearing capacity of solid-web steel beam:
M＝fγWx＝215×1.0×1.787×105＝3.842×107N·mm＝38.42kN·m
here, the modeling development coefficient γ is 1.0, and the calculation is conservative.
Overall stability of solid web steel beam:
when the planks (various steel bar and rod slabs and steel plates) are closely laid on and firmly connected with the compression flange of the beam and can prevent the lateral displacement of the compression flange of the beam or the free length l of the compression flange of the H-shaped steel simply supported beam1And its width blThe ratio is not more than the value specified in the specificationCalculating the overall stability of the beam.
In this example:
not meeting the specification requirements and calculating the overall stability of the steel beam when the presence of decking is not considered
The properties were as follows:
the overall stability factor of the solid-web steel girder is calculated as follows:
the specification requires:
(4) calculation of bearing capacity of honeycomb steel beam
Bending resistance bearing capacity of the honeycomb steel beam:
solid web section at beam pier:
W1the cross-sectional resisting moment of the solid abdomen is 1.787 multiplied by 105mm3，
T-shaped section at toe of beam pier:
in this example
AT＝(8×100+12×6)＝872mm2
a＝40mm
Distance from centroids of upper and lower T-shaped cross sections to the neutral axis:
Hz＝2y1＝2×95.17＝190.34mm
so that there are
The integral stability of the honeycomb steel beam is as follows:
with the calculation of the stability of the solid web steel beam, the overall stability of the steel beam is calculated as follows when no planking is considered:
the overall stability factor of the beam was calculated as:
the specification requires:
W0get WTmin＝1.58×105mm3
(5) Calculating the bearing capacity of the reinforced concrete part:
considering a rectangular section with 184X 94 of the section of the filled reinforced concrete, the section area of the longitudinal bar is 113.10mm2，
β therein1＝0.8，ES＝2.1×105,εcu＝0.0033-(fcu,k-50)×10-5εcu＝0.0033-(fcu,k-50)×10-5Calculating the epsiloncu>When 0.0033, take εcu＝0.0033。
Reinforcement ratio
(6) PEC honeycomb girder bearing capacity calculation
Bending resistance and bearing capacity of a PEC honeycomb steel beam:
α1fcw(bf-tw)x-fyAs+fy'As'+fa'Aac+fa(Aa-Aac)＝0
the thickness of the corresponding reduction web of the open hole of the honeycomb web is 3.5mm, so the following can be calculated:
fcw＝14.3N/mm2
x＝48.6mm
bf＝100mm,ha＝200mm,tw＝6mm,tf＝8mm
fy＝360N/mm2,fy'＝360N/mm2,fa＝fa'＝215N/mm2,
As＝As'＝113.10×2＝226.20mm2
ha＝200mm
satisfies the following conditions:
2a's≤48.6≤ξbh0
(7) analysis of results
The bending resistance bearing capacity of the solid H-shaped steel beam is 38.42 kN.m; the bending resistance bearing capacity of the H-shaped honeycomb steel beam is 34.93 kN.m; the bending resistance bearing capacity of the reinforced concrete is 10.56 kN.m; adding the bearing capacity of the reinforced concrete and the bearing capacity of the honeycomb steel beam to obtain the bearing capacity of the PEC honeycomb steel beam of 45.49 kN.m; the calculation in (6) shows that the bearing capacity of the PEC honeycomb steel beam is 53.47 kN.m, and the bending resistance of the PEC honeycomb steel beam which considers the combined action of the honeycomb steel beam and the reinforced concrete is improved by 53.47-45.49-7.98 kN.m, accounting for 17.54 percent. When the stability of the steel beam is considered, the bearing capacity of the solid-web steel beam and the bearing capacity of the honeycomb steel beam are respectively 24.26kN & m and 19.58kN & m, the bearing capacity is obviously smaller, and the PEC honeycomb steel beam has excellent stability and bearing capacity due to the action of reinforced concrete.
(8) Symbol
M: the section bending resistance bearing capacity;
fcw: design for compression strength of concrete at belly of beam main steel partA value;
x: the distance from the neutral axis of the combined section to the pressed edge of the concrete;
bf、ha、tw、tf: the beam main steel part comprises a beam main steel part, a beam main steel part and a beam main steel part, wherein the beam main steel part comprises a beam flange, a beam main steel part, a web plate and a beam main steel part;
α1the concrete compression stress influence coefficient of the compression area is determined by taking α as-1.0 when the concrete strength grade does not exceed C50 and taking α as 0.94 when the concrete strength grade is C80 according to a linear interpolation method;
fy、fy': the design values of tensile strength and compressive strength of the steel bar;
fa、fa': designing tensile strength and compressive strength of the beam main steel part;
As、As': the cross-sectional area of the tensioned and stressed steel bar;
Aa、Aac: the total section of the beam main steel part and the section area of the compression area of the beam main steel part;
as、as': the distance from the resultant point of the steel bars in the tension area to the tension edge of the concrete and the distance from the resultant point of the steel bars in the compression area to the compression edge of the concrete;
Sat、Sac: the area moment of the section of the tension zone beam main steel component and the section of the compression zone beam main steel component to the plastic neutralization shaft of the combined section;
h0: the effective height of the concrete section is the distance from the outer edge of the compression area of the concrete section to the combined force point of the tension flange and the tension steel bar of the beam main steel part;
Es、Ea: the modulus of elasticity of the steel bars and the modulus of elasticity of the beam main steel part;
Mmax: maximum bending moment on the honeycomb beam;
WI: solid section modulus at the pier;
f: the bending strength design value of the steel;
Mx: the bending moment of the midpoint (the distance x from the support) of the honeycomb hole near the cross section needs to be checked;
AT: bridge T-sectionThe area of the surface is that the circular hole is a T-shaped section at the middle of the bridge span;
a: the span of the bridge;
hz: the gravity center distance of the upper and lower T-shaped sections of the bridge part;
Vx: the shearing force of the middle point (the distance x from the support) of the honeycomb hole near the cross section needs to be checked;
WTmin: the minimum section modulus of the T-shaped section of the bridge part, and the T-shaped section at the bridge toe position is taken as the round hole;
v: the shearing force of the cross section of the support along the plane of the web plate;
s: calculating the area moment of the centering and neutralizing shaft of the upper hair section at the shearing stress position;
i: the inertia of the hair section is short;
tw: the web thickness.
Example 2:
a partially filled concrete composite honeycomb steel beam comprising: h shaped steel, stirrup, indulge the muscle, be provided with oval hole on the H shaped steel web, the stirrup passes oval hole, indulge the muscle pass the stirrup ligature on the stirrup oval hole intussuseption is filled with the concrete.
Through system experiments and analysis, the following results are found: through the perpendicular setting of oval hole major axis, can make things convenient for arranging of stirrup more, consequently, in this embodiment, the flange board of oval hole major axis direction perpendicular to, other forms holes such as other forms holes can be for circular, square, rhombus in addition to the H shaped steel trompil.
Example 3:
a partially filled concrete composite honeycomb steel beam comprising: h shaped steel, stirrup, indulge the muscle, be provided with oval hole on the H shaped steel web, the stirrup passes oval hole, indulge the muscle pass the stirrup ligature on the stirrup oval hole intussuseption is filled with the concrete.
Because the technical requirements on the strength, the size and the like of the steel beam are different under different working conditions, the invention carries out system research on the size and the space of the oval holes of the honeycomb steel beam to discover that: the major axis a of the orifice can be 0.6-0.9 times of the height of the beam, the ratio of the minor axis b of the elliptical hole to the major axis a is preferably 0.2-1, and the distance between the edges of the adjacent circular orifices is preferably 0.2-0.9 times of the minor axis b; and holes should not be formed in the range equivalent to the beam height from the beam ends.
Example 4:
a partially filled concrete composite honeycomb steel beam comprising: h shaped steel, stirrup, indulge the muscle, be provided with oval hole on the H shaped steel web, the stirrup passes oval hole, indulge the muscle pass the stirrup ligature on the stirrup oval hole intussuseption is filled with the concrete.
The stirrups are mainly used for meeting the shear strength of the oblique section and connecting the stressed main reinforcement and the reinforcement of the mixed reinforcement framework in the compression area. The closed rectangular stirrup, the rhombic stirrup, the polygonal stirrup, the groined stirrup, the circular stirrup and the like are discovered through research in the invention: the rectangular stirrups are more beneficial to the shear strength of the inclined sections of the steel beams and the improvement of the whole bending rigidity and the bending bearing capacity of the steel beams. Thus, in this embodiment, the stirrup is rectangular.
Example 5:
a partially filled concrete composite honeycomb steel beam comprising: h shaped steel, stirrup, indulge the muscle, be provided with oval hole on the H shaped steel web, the stirrup passes oval hole, indulge the muscle pass the stirrup ligature on the stirrup oval hole intussuseption is filled with the concrete.
Because the load and span that the girder steel needs to bear are great in the building structure, in order to guarantee the whole intensity and the structural stability of building, therefore, in this embodiment, Q235B and above grade steel are adopted to the H shaped steel to through the intensity of high-quality steel itself, satisfy honeycomb girder steel intensity, rigidity or stable requirement.
Example 6:
a partially filled concrete composite honeycomb steel beam comprising: h shaped steel, stirrup, indulge the muscle, be provided with oval hole on the H shaped steel web, the stirrup passes oval hole, indulge the muscle pass the stirrup ligature on the stirrup oval hole intussuseption is filled with the concrete.
The beam section of the invention can be H-shaped section, box section, rectangular section, T-shaped section, cross section, mouth section, irregular section and the like
Example 7:
a partially filled concrete composite honeycomb steel beam comprising: h shaped steel, stirrup, indulge the muscle, be provided with oval hole on the H shaped steel web, the stirrup passes oval hole, indulge the muscle pass the stirrup ligature on the stirrup oval hole intussuseption is filled with the concrete.
The concrete is common concrete or light concrete, foam concrete, aerated concrete and the like.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or equivalents thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. The utility model provides a partly pack concrete combination honeycomb girder steel, post which characterized in that includes: h shaped steel, stirrup, indulge the muscle, be provided with oval hole on the H shaped steel web, the stirrup passes oval hole, indulge the muscle pass the stirrup ligature on the stirrup oval hole intussuseption is filled with the concrete.
2. The partially filled concrete composite honeycomb steel beam/column according to claim 1, wherein the major axis of the oval holes is perpendicular to the flange plate of the H-shaped steel.
3. A partially filled concrete composite honeycomb steel beam or column according to claim 1 wherein the major axis a of the openings is from 0.6 to 0.9 times the height of the beam, the ratio of the minor axis b of the elliptical holes to the major axis a is preferably from 0.2 to 1, and the distance between the edges of adjacent circular openings is preferably from 0.2 to 0.9 times the minor axis b, while not providing holes at a distance from the beam ends corresponding to the height of the beam.
4. The partially filled concrete composite honeycomb steel beam, column according to claim 1, wherein said stirrups are rectangular.
5. The partially filled concrete composite honeycomb steel beam and column as claimed in claim 1, wherein the H-shaped steel is Q235B steel.
6. The partially filled concrete composite honeycomb steel beam or column according to claim 1, wherein the concrete is ordinary concrete or lightweight aggregate concrete.
7. The partially filled concrete composite honeycomb steel beam or column according to claim 1, wherein the specific size of the H-shaped steel is H200X 100X 6X 8.
8. The partially filled concrete combined honeycomb steel beam and column according to claim 1, wherein the span of the H-shaped steel is 2-10 m.
9. A method for manufacturing a partially filled concrete combined honeycomb steel beam and column is characterized by comprising the following steps of:
placing the H-shaped steel provided with the oval holes on the side, arranging stirrups and penetrating longitudinal bars;
and arranging baffle plates at two ends of the steel beam and the column, pouring concrete, and curing until demolding is carried out.
10. The method for evaluating the strength of the partially filled concrete combined honeycomb steel beam and column is characterized by comprising the following steps of:
analyzing design parameters and section characteristics of the partially filled concrete combined honeycomb steel beam;
and calculating the bearing capacity to obtain the bearing capacity.
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