CN115341655A - Assembled steel structure inner and outer sleeve column splicing joint and construction method - Google Patents
Assembled steel structure inner and outer sleeve column splicing joint and construction method Download PDFInfo
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- CN115341655A CN115341655A CN202210760198.8A CN202210760198A CN115341655A CN 115341655 A CN115341655 A CN 115341655A CN 202210760198 A CN202210760198 A CN 202210760198A CN 115341655 A CN115341655 A CN 115341655A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5831—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially rectangular form
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2418—Details of bolting
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2421—Socket type connectors
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2451—Connections between closed section profiles
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/246—Post to post connections
Abstract
The assembled steel structure building is divided into a plurality of independent modules and then is transported to a construction site for installation, and the assembled steel structure comprises a first steel column, a second steel column, an outer sleeve, an inner sleeve and a plurality of self-tapping bolts, and adopts high-strength bolt connection to replace common welding, so that the welding-free full-bolt assembly on the construction site is realized. The assembled steel structure inner and outer sleeve column splicing node provided by the invention can realize the solderless connection of vertical components in a construction site, and is only fastened through self-tapping bolts, so that the construction efficiency is greatly improved; the method has great strategic significance for breaking through the key technology of the non-welding connection of the steel structure vertical members, researching and developing a new efficient connection technology of the steel structure box column, realizing the full bolt connection and efficient assembly of a steel structure system, promoting the industrial upgrading of the building, improving the construction efficiency, reducing the environmental pollution and promoting the ecological civilization.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to an assembly type steel structure inner and outer sleeve column splicing node and a construction method.
Background
The steel structure has the advantages of high strength, light self weight, good ductility, high installation mechanization degree and the like, and is widely applied to high-rise and super high-rise buildings in recent years. The development of the assembly type steel structure can promote the development of the industrialization of the assembly type building in China, so that the design and production of standard parts and the on-site rapid assembly and forming in factories are realized, the labor amount is greatly reduced, the working period is shortened, and the trend of the development of the building in China is achieved. The node is a key part of the structure, in the fabricated steel structure building, the connection performance directly influences the bearing capacity, rigidity, stability and the like of the structure, and the research and development of the node with good stress performance and convenient assembly is very key.
At present, the assembled steel structure connecting node has the following problems. First, a welding joint connection technique is widely used in an assembled steel structure, and the connection method has disadvantages of low construction efficiency, high cost, severe damage in an earthquake, easy environmental pollution, and the like. At present, the two-person butt welding of the single box column needs about 4 hours, and the construction speed is slow. The quality of on-site welding depends on the level of a welder and the on-site construction environment to a great extent, and the on-site welding is difficult to ensure that no defect occurs and further the construction quality is influenced. Secondly, the labor cost is high, along with the gradual increase of the labor cost in China, the engaging cost of workers with rich experience and capable of ensuring the welding quality in different environments is gradually increased, the increase of the labor cost caused by the welding of a steel structure is gradually concerned, and the invisible cost caused by the prolonging of the project period caused by the slower construction efficiency cannot be ignored. Moreover, environmental pollution in the full penetration welding process of the box-shaped column seriously influences the construction progress of the steel structure building, and further the construction cost of the steel structure building is improved. And finally, the steel structure welding node is seriously damaged under the earthquake and has poor on-site welding durability, the earthquake damage phenomenon of the steel structure is counted in the sakashen earthquake, the damage position of the steel structure is mainly generated at the steel column and the beam column node, about 50 percent of fillet welds are damaged, and 21 percent of full penetration welds are damaged. Due to the influence of welding stress, the residual stress of a welding area of the box-shaped column is large, the ductility is poor, and corner microgaps of a large number of steel columns are expanded in an earthquake, so that the base material and the welding seam of a heat affected zone are cracked, and a large part of the base material extends to a column body, so that the whole structure is in a state of collapsing or serious damage. The existence of the problems seriously restricts the industrial upgrading of buildings and hinders the further development of the assembled steel structure.
Disclosure of Invention
The embodiment of the invention provides an assembled steel structure inner and outer sleeve column splicing node and a construction method, which are used for solving the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme.
An assembled steel structure inner and outer sleeve column splicing node comprises a first steel column, a second steel column, an outer sleeve, an inner sleeve and a plurality of self-tapping bolts; the first steel column, the second steel column, the outer sleeve and the inner sleeve are axially communicated structures; the side wall of the first steel column is provided with a plurality of first bolt holes, the side wall of the second steel column is provided with a plurality of second bolt holes, the side wall of the outer sleeve is provided with a plurality of third bolt holes, and the side wall of the inner sleeve is provided with a plurality of fourth bolt holes;
the outer sleeve is used for being sleeved on the outer wall of one side of the first steel column, the inner sleeve is used for being sleeved on the inner wall of the second steel column, and one side of the inner sleeve extends out when the inner sleeve and the second steel column are connected with each other;
the first steel column and the second steel column are used for being mutually butted; when the first steel column and the second steel column are mutually butted, the outer sleeve is sleeved on the outer sides of the first steel column and the second steel column, the inner sleeve is positioned in the first steel column and the second steel column, the third bolt holes correspond to the second bolt holes one by one, and the first bolt holes correspond to the fourth bolt holes one by one;
the self-tapping bolt comprises a first self-tapping bolt and a second self-tapping bolt; when the first steel column and the second steel column are mutually butted: the first tapping bolts are matched with the third bolt holes and the second bolt holes which correspond to one another one by one, so that the first steel column is connected with the inner sleeve; the second self-tapping bolts are matched with the first bolt holes and the fourth bolt holes which correspond to each other one by one, so that the outer sleeve is connected with the second steel column;
parameter passing type of first steel column, second steel column, outer sleeve, inner sleeve and a plurality of self-tapping bolts
calculating to obtain; in the formula (I), the compound is shown in the specification,
respectively is the designed shear-resisting bearing capacity value W of the ith and jth self-tapping bolts matched with the inner sleeve and the outer sleeve n 、W w 、W cu 、W cd Respectively an inner sleeve, an outer sleeve, an upper steel column and a lower steel column cross-section resisting moment, d nx 、d wy The distances from the ith self-tapping bolt and the jth self-tapping bolt matched with the inner sleeve and the outer sleeve to the center shafts of the inner sleeve and the outer sleeve are respectively, i is the number of the second self-tapping bolts, j is the number of the first self-tapping bolts, and f is a material strength design value.
Preferably, when the first steel column and the second steel column are butted with each other, a gap is formed between the outer sleeve and the second steel column, and a gap is formed between the first steel column and the inner sleeve.
Preferably, the sum of the gap between the outer sleeve and the second steel column and the gap between the first steel column and the inner sleeve is not greater than 4mm.
Preferably, the length of the outer sleeve is not less than 600mm, and the length of the section of the first steel column extending into the outer sleeve is not less than 200mm; the length of the inner sleeve is not less than 600mm, and the length of the section of the inner sleeve extending into the second steel column is not less than 200mm.
Preferably, the cross section of the first steel column, the second steel column and the outer sleeve is square, and the cross section of the inner sleeve is octagonal.
In a second aspect, the invention provides a construction method of a splicing node of an inner sleeve column and an outer sleeve column of an assembled steel structure, which comprises the following steps:
s1, sleeving an outer sleeve on the outer wall of one side of a first steel column, sleeving an inner sleeve on the inner wall of a second steel column, and extending one side of the inner sleeve out;
s2, respectively forming a first bolt hole, a second bolt hole, a third bolt hole and a fourth bolt hole in the side walls of the first steel column, the second steel column, the outer sleeve and the inner sleeve;
s3, vertically installing a second steel column at a construction position, wherein an inner sleeve is positioned at the top of the second steel column;
s4, hoisting the first steel column on the top of the second steel column after the step S1 is executed, so that the outer sleeve sleeves the outer sides of the first steel column and the second steel column, the inner sleeve is positioned in the first steel column and the second steel column, the third bolt holes correspond to the second bolt holes one by one, and the first bolt holes correspond to the fourth bolt holes one by one;
s5, matching the first self-tapping bolts with the third bolt holes and the second bolt holes which correspond to each other one by one to enable the first steel column and the inner sleeve to be connected with each other; matching the second self-tapping bolts with the first bolt holes and the fourth bolt holes which correspond to each other one by one to enable the outer sleeve to be connected with the second steel column;
parameter passing type of first steel column, second steel column, outer sleeve, inner sleeve and a plurality of self-tapping bolts
calculating to obtain; in the formula (I), the compound is shown in the specification,
respectively is the designed shear-resisting bearing capacity value W of the ith and jth self-tapping bolts matched with the inner sleeve and the outer sleeve n 、W w 、W cu 、W cd Respectively an inner sleeve, an outer sleeve, an upper steel column and a lower steel column cross-section resisting moment, d nx 、d wy Respectively matched with an inner sleeve and an outer sleeveThe distance from the ith self-tapping bolt and the jth self-tapping bolt to the center shafts of the inner sleeve and the outer sleeve is set as i, the number of the second self-tapping bolts is set as j, the number of the first self-tapping bolts is set as j, and the number of the second self-tapping bolts is set as f.
According to the technical scheme provided by the embodiment of the invention, the assembled steel structure inner and outer sleeve column splicing node and the construction method provided by the invention have the advantages that the assembled steel structure building is divided into a plurality of independent modules, then the modules are transported to a construction site for installation, and in the assembled steel structure, the high-strength bolt connection is adopted to replace the common welding, so that the welding-free full-bolt assembly on the construction site is realized. The assembled steel structure inner and outer sleeve column splicing node provided by the invention can realize solderless connection of vertical components on the construction site, and is only fastened through self-tapping bolts, so that the construction efficiency is greatly improved; the method has great strategic significance for breaking through the key technology of the non-welding connection of the steel structure vertical members, researching and developing a new efficient connection technology of the steel structure box column, realizing the full bolt connection and efficient assembly of a steel structure system, promoting the industrial upgrading of the building, improving the construction efficiency, reducing the environmental pollution and promoting the ecological civilization.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
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 according to these drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating a split joint of an assembled steel structure inner and outer sleeve column splicing joint according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an assembled steel structure after splicing of inner and outer sleeve column splicing joints is completed according to an embodiment of the invention;
fig. 3 is a schematic view of an upper steel column and a self-tapping bolt hole site of the upper steel column of an assembled steel structure inner and outer sleeve column splicing node according to an embodiment of the present invention;
fig. 4 is a schematic view of a lower steel column and a self-tapping bolt hole site of the lower steel column of the assembled steel structure inner and outer sleeve column splicing node according to the embodiment of the invention;
fig. 5 is a schematic view of an outer sleeve and an outer sleeve self-tapping bolt hole site of an assembled steel structure inner and outer sleeve column splicing node according to an embodiment of the present invention;
fig. 6 is a schematic diagram of inner sleeves and inner sleeve self-tapping bolt hole positions of an assembled steel structure inner and outer sleeve column splicing node according to an embodiment of the present invention;
fig. 7 is an integral schematic view of an upper steel column and an outer sleeve of an assembled steel structure inner and outer sleeve column splicing node according to an embodiment of the present invention;
fig. 8 is an integrated schematic view of a lower steel column and an inner sleeve of an assembled steel structure inner and outer sleeve column splicing node according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a disassembled assembled steel structure post-inversion rear column splicing node of an assembled steel structure inner and outer sleeve post splicing node according to an embodiment of the present invention;
fig. 10 is a construction flow chart of a construction method of the assembled steel structure inner and outer sleeve column splicing node according to the embodiment of the present invention.
In the figure:
1. a first steel column; 2. a second steel column; 3. an outer sleeve; 4. an inner sleeve; 5. a self-tapping bolt; 6. a first bolt hole; 7. a fourth bolt hole; 8. a second bolt hole; 9. a third bolt hole.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" include plural referents unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including 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 will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following detailed description will be given by way of example with reference to the accompanying drawings, and the embodiments are not intended to limit the embodiments of the present invention.
Referring to fig. 1 to 9, the invention provides an assembly type steel structure inner and outer sleeve 3-column splicing node, which comprises a first steel column 1, a second steel column 2, an outer sleeve 3, an inner sleeve 4 and a plurality of self-tapping bolts 5. The first steel column 1, the second steel column 2, the outer sleeve 3 and the inner sleeve 4 are axially (i.e. in the length direction when the steel column is horizontally placed) through structures. The side wall of the first steel column 1 is provided with a plurality of first bolt holes 6, the side wall of the second steel column 2 is provided with a plurality of second bolt holes 78, the side wall of the outer sleeve 3 is provided with a plurality of third bolt holes 9, and the side wall of the inner sleeve 4 is provided with a plurality of fourth bolt holes.
The outer sleeve 3 is used for being sleeved on the outer wall (the outer side) of one side of the first steel column 1, and the inner sleeve 4 is used for being sleeved on the inner wall of the second steel column 2. As shown in fig. 1 and 9, when the inner sleeve 4 and the second steel column 2 are connected to each other, one side of the inner sleeve 4 is protruded, i.e., the inner sleeve 4 is partially located inside the second steel column 2. The outer sleeve 3 also extends a partial section relative to the first steel column 1.
The first steel column 1 and the second steel column 2 can be butted against each other (end-to-end) through respective axial end faces. When the first steel column 1 and the second steel column 2 are butted with each other, the outer sleeve 3 is sleeved outside the first steel column 1 and the second steel column 2 and is positioned at the joint area of the first steel column 1 and the second steel column 2. The inner sleeve 4 is positioned in the inner space of the first steel column 1 and the second steel column 2 and is also positioned in the joint area of the first steel column 1 and the second steel column 2. At this time, the third bolt holes 9 correspond to the second bolt holes 78 one by one, and the first bolt holes 6 correspond to the fourth bolt holes one by one. The one-to-one correspondence is: a third bolt hole 9 coincides with a second bolt hole 78 and can be fitted with the tapping bolt 5. The same applies to the first bolt hole 6 and the fourth bolt hole.
The self-tapping bolt 5 includes a first self-tapping bolt 5 and a second self-tapping bolt 5. When the first steel column 1 and the second steel column 2 are butted with each other: the first self-tapping bolts 5 are matched with the third bolt holes 9 and the second bolt holes 78 which correspond to each other one by one, so that the first steel column 1 is connected with the inner sleeve 4; the second self-tapping bolts 5 are matched with the first bolt holes 6 and the fourth bolt holes which correspond to one another, so that the outer sleeve 3 is connected with the second steel column 2.
Fig. 2 shows a state in which the splice node is completely installed, which is a vertical structure, and in the embodiment shown in fig. 2, the second steel column 2 is located below, which may be referred to as a lower steel column, the first self-tapping bolts 5 may be referred to as lower self-tapping bolts, the first steel column 1 is located above, which may be referred to as an upper steel column, and the second self-tapping bolts 5 may be referred to as upper self-tapping bolts. The outer sleeve 3 wraps the lower steel column, and the upper steel column wraps the inner sleeve 4 to form staggered connection. Of course, the splice node can also be inverted (as in fig. 9).
The first steel column 1 and the outer sleeve 3, and the second steel column 2 and the inner sleeve 4 are respectively connected into a whole in a factory in a plug welding mode; drilling self-tapping bolts 5 at the corresponding bolt hole positions of the upper steel column and the inner sleeve 4 and the lower steel column and the outer sleeve 3 respectively; transporting the upper steel column and the lower steel column which are welded into a whole to a construction site for installation and hoisting; and the outer sleeve 3 and the lower steel column, and the inner sleeve 4 and the upper steel column are connected through self-tapping bolts 5 to finish installation.
In the embodiment provided by the invention, the design of each part of the splicing node meets the following conditions: the sum of the bending resistance bearing capacity of the outer sleeve 3 and the first self-tapping bolt 5 is not less than the bending resistance bearing capacity of the second steel column 2, and the sum of the bending resistance bearing capacity of the inner sleeve 4 and the second self-tapping bolt 5 is not less than the bending resistance bearing capacity of the first steel column 1. Specifically, the shear resistance can satisfy the following formula
in the formula (I), the compound is shown in the specification,
respectively as follows: the shear-bearing capacity of the ith self-tapping bolt 5, which is fitted to the inner sleeve 4, is designed to be the shear-bearing capacity of the jth self-tapping bolt 5, which is fitted to the outer sleeve 3. W n 、W w 、W cu 、W cd Respectively an inner sleeve 4, an outer sleeve 3, a first steel column 1 and a second steel column 2 with cross-section resisting moments d nx 、d wy Respectively as follows: the distance from the i-th self-tapping bolt 5, which is fitted to the inner sleeve 4, to the rotational axis of the inner sleeve 4, and the distance from the j-th self-tapping bolt 5, which is fitted to the outer sleeve 3, to the rotational axis of the outer sleeve 3. i is the number of the second self-tapping bolts 5, j is the number of the first self-tapping bolts 5, and f is a design value of material strength. The formula is designed by adopting an equal-strength principle, namely the bending rigidity of the self-tapping bolts is greater than that of the section of the steel column, and when the size of the section of the steel column and the material property of the steel column are determined, the number of the self-tapping bolts and the distance from the self-tapping bolts to a rotating shaft can be determined.
The bolt holes can be arranged in a mode that a circle is arranged on the periphery of the same horizontal plane of the steel column and the sleeve, and the bolt holes are arranged at intervals.
In order to facilitate installation, in the preferred embodiment of the present invention, when the first steel column 1 and the second steel column 2 are butted against each other, the outer sleeve 3 and the second steel column 2 have a gap therebetween, and the first steel column 1 and the inner sleeve 4 have a gap therebetween. Further, the sum of the gap between the outer sleeve 3 and the second steel column 2 and the gap between the first steel column 1 and the inner sleeve 4 is not more than 4mm.
In the preferred embodiment provided by the invention, the length of the outer sleeve 3 is not less than 600mm, and the length of the section of the first steel column 1 extending into the outer sleeve 3 is not less than 200mm; the length of the inner sleeve 4 is not less than 600mm, and the length of the section of the inner sleeve 4 extending into the second steel column 2 is not less than 200mm.
In the preferred embodiment provided by the invention, the cross sections of the first steel column 1, the second steel column 2 and the outer sleeve 3 are square, and the cross section of the inner sleeve 4 is octagonal, such as the corner-cut square structure shown in the figure, but the cross section can also be circular.
In a second aspect, the invention provides a construction method for the assembled steel structure inner and outer sleeve 3-column splicing node, as shown in fig. 10, comprising the following steps:
s1, sleeving an outer sleeve 3 on the outer wall of one side of a first steel column 1, sleeving an inner sleeve 4 on the inner wall of a second steel column 2, and extending one side of the inner sleeve 4 out; the sleeving in the step can adopt a welding mode;
s2, respectively forming a first bolt hole 6, a second bolt hole 78, a third bolt hole 9 and a fourth bolt hole in the side walls of the first steel column 1, the second steel column 2, the outer sleeve 3 and the inner sleeve 4;
s3, vertically installing the second steel column 2 at a construction position, and positioning the inner sleeve 4 at the top of the second steel column 2;
s4, hoisting the first steel column 1 on the top of the second steel column 2 after the step S1 is executed, so that the outer sleeve 3 is sleeved on the outer sides of the first steel column 1 and the second steel column 2, the inner sleeve 4 is positioned in the first steel column 1 and the second steel column 2, the third bolt holes 9 correspond to the second bolt holes 78 one by one, and the first bolt holes 6 correspond to the fourth bolt holes one by one;
s5, matching the first self-tapping bolts 5 with the corresponding third bolt holes 9 and the corresponding second bolt holes 78 to enable the first steel column 1 and the inner sleeve 4 to be connected with each other; and matching the second self-tapping bolts 5 with the first bolt holes 6 and the fourth bolt holes which correspond to each other one by one, so that the outer sleeve 3 and the second steel column 2 are connected with each other.
Wherein, the first steel column, the second steel column, the outer sleeve, the inner sleeve and a plurality of self-tapping bolts are in a parameter passing mode
and (6) calculating.
In summary, according to the assembly type steel structure inner and outer sleeve column splicing node and the construction method provided by the invention, an assembly type steel structure building is divided into a plurality of independent modules, and then the modules are transported to a construction site for installation. The assembled steel structure inner and outer sleeve column splicing node provided by the invention can realize the solderless connection of vertical components in a construction site, and is only fastened through self-tapping bolts, so that the construction efficiency is greatly improved; the method has great strategic significance for breaking through the key technology of no welding connection of the steel structure vertical members, researching and developing a new efficient connection technology of the steel structure box column, realizing full bolt connection and efficient assembly of a steel structure system, promoting building industrialization upgrading, improving construction efficiency, reducing environmental pollution and promoting ecological civilization.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
From the above description of the embodiments, it is clear to those skilled in the art that the present invention can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present invention may be embodied in the form of software products, which can be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and include instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.
The embodiments in the present specification are all described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to the method embodiments, they are described in relative terms, as long as they are described in partial descriptions of the method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. An assembled steel structure inner and outer sleeve column splicing node is characterized by comprising a first steel column, a second steel column, an outer sleeve, an inner sleeve and a plurality of self-tapping bolts; the first steel column, the second steel column, the outer sleeve and the inner sleeve are axially communicated structures; the side wall of the first steel column is provided with a plurality of first bolt holes, the side wall of the second steel column is provided with a plurality of second bolt holes, the side wall of the outer sleeve is provided with a plurality of third bolt holes, and the side wall of the inner sleeve is provided with a plurality of fourth bolt holes;
the outer sleeve is used for being sleeved on the outer wall of one side of the first steel column, the inner sleeve is used for being sleeved on the inner wall of the second steel column, and one side of the inner sleeve extends out when the inner sleeve and the second steel column are connected with each other;
the first steel column and the second steel column are used for being mutually butted; when the first steel column and the second steel column are in butt joint with each other, the outer sleeve sleeves the outer sides of the first steel column and the second steel column, the inner sleeve is located in the first steel column and the second steel column, the third bolt holes correspond to the second bolt holes one by one, and the first bolt holes correspond to the fourth bolt holes one by one;
the self-tapping bolt comprises a first self-tapping bolt and a second self-tapping bolt; when the first steel column and the second steel column are mutually butted: the first self-tapping bolts are matched with the third bolt holes and the second bolt holes which correspond to each other one by one, so that the first steel column is connected with the inner sleeve; the second self-tapping bolts are matched with the first bolt holes and the fourth bolt holes which correspond to one another one by one, so that the outer sleeve is connected with the second steel column;
parameter passing type of the first steel column, the second steel column, the outer sleeve, the inner sleeve and the self-tapping bolts
calculating to obtain; in the formula (I), the compound is shown in the specification,
the shear-resisting bearing capacity design values, W, of the ith and jth self-tapping bolts matched with the inner sleeve and the outer sleeve respectively n 、W w 、W cu 、W cd Respectively including inner sleeve, outer sleeve, upper steel column and lower steel column cross-section resisting moment, d nx 、d wy The distances from the ith self-tapping bolt and the jth self-tapping bolt matched with the inner sleeve and the outer sleeve to the center shafts of the inner sleeve and the outer sleeve are respectively, i is the number of the second self-tapping bolts, j is the number of the first self-tapping bolts, and f is a material strength design value.
2. The fabricated steel structure inside and outside sleeve-column splicing node of claim 1, wherein when the first and second steel columns are butted against each other, a gap is provided between the outer sleeve and the second steel column, and a gap is provided between the first steel column and the inner sleeve.
3. The fabricated steel structure inside and outside socket column splicing node of claim 3, wherein a sum of a gap between the outer sleeve and the second steel column and a gap between the first steel column and the inner sleeve is no greater than 4mm.
4. The fabricated steel structure inside and outside sleeve column splicing node of claim 1, wherein the outer sleeve is no less than 600mm in length, and the section of the first steel column extending into the outer sleeve is no less than 200mm in length; the length of the inner sleeve is not less than 600mm, and the length of the section of the inner sleeve extending into the second steel column is not less than 200mm.
5. The fabricated steel structure inside and outside sleeve column splicing node of claim 1, wherein the cross section of the first steel column, the second steel column and the outer sleeve is square, and the cross section of the inner sleeve is octagonal.
6. A construction method for splicing joints of inner and outer sleeve columns of an assembled steel structure is characterized by comprising the following steps:
s1, sleeving the outer sleeve on the outer wall of one side of the first steel column, sleeving the inner sleeve on the inner wall of the second steel column, and enabling one side of the inner sleeve to extend out;
s2, respectively forming a first bolt hole, a second bolt hole, a third bolt hole and a fourth bolt hole in the side walls of the first steel column, the second steel column, the outer sleeve and the inner sleeve;
s3, vertically installing the second steel column at a construction position, wherein the inner sleeve is positioned at the top of the second steel column;
s4, hoisting the first steel column on the top of the second steel column after the step S1 is executed, so that the outer sleeve is sleeved on the outer sides of the first steel column and the second steel column, the inner sleeve is positioned in the first steel column and the second steel column, the third bolt holes correspond to the second bolt holes one by one, and the first bolt holes correspond to the fourth bolt holes one by one;
s5, matching first self-tapping bolts with the third bolt holes and the second bolt holes which correspond to each other one by one to enable the first steel column and the inner sleeve to be connected with each other; the second self-tapping bolts are matched with the first bolt holes and the fourth bolt holes which correspond to one another one by one, so that the outer sleeve and the second steel column are connected with each other;
parameter passing type of the first steel column, the second steel column, the outer sleeve, the inner sleeve and the plurality of self-tapping bolts
calculating to obtain; in the formula (I), the compound is shown in the specification,
respectively is the designed shear-resisting bearing capacity value W of the ith and jth self-tapping bolts matched with the inner sleeve and the outer sleeve n 、W w 、W cu 、W cd Respectively including inner sleeve, outer sleeve, upper steel column and lower steel column cross-section resisting moment, d nx 、d wy The distances from the ith self-tapping bolt and the jth self-tapping bolt matched with the inner sleeve and the outer sleeve to the center shafts of the inner sleeve and the outer sleeve are respectively, i is the number of the second self-tapping bolts, j is the number of the first self-tapping bolts, and f is a material strength design value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210760198.8A CN115341655A (en) | 2022-06-30 | 2022-06-30 | Assembled steel structure inner and outer sleeve column splicing joint and construction method |
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