Assembled steel-wood composite structure
Technical Field
The invention relates to an assembly type steel-wood combined structure.
Background
Because the fabricated structure using steel and concrete as main materials has the defects of great self weight, poor shock resistance, high cost and the like, more and more buildings adopt a steel-wood combined structure mode. The assembled steel-wood composite structure meets the development requirement of building industrialization, has wide application range and convenient construction, and meets the concept of green buildings. The scheme of being connected steel column and timber beams structure has always the node connection form simple among the prior art, and connection structure is insecure, resistance to plucking effect is not good, timber beams bending resistance bearing capacity is not enough scheduling problem.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an assembly type steel-wood combined structure with better node strength and bearing capacity.
The technical scheme is as follows: the assembled steel-wood composite structure comprises a square steel column, a wood beam and a connecting piece; the square steel column is fixedly connected with the wood beam through a connecting piece; the square steel columns comprise first square steel columns and second square steel columns, and the wood beams comprise first wood beams and second wood beams; the connecting piece comprises a hollow square steel ring, and a threaded connecting hole I is formed in the side wall of the square steel ring; the first wood beam and the second wood beam are provided with extension plates with threaded connection holes II at the end parts, the extension plates of the first wood beam and the second wood beam are enclosed to form a square cavity, square columns are embedded into the square cavity, the end parts of a first square steel column and a second square steel column respectively extend into the square columns from openings at the upper side and the lower side of the square columns, threaded connection holes III are also formed in the side walls of the first square steel column and the second square steel column, and bolt holes in the square steel column, the wood beam and the square steel ring are correspondingly arranged and are connected and fixed through bolts.
The bolt connecting holes III are formed in the end portions of the first square steel column and the second square steel column and are arranged in three rows and four columns.
The first wood beam and the second wood beam are provided with a rectangular notch at the end part through the extension plates which are arranged in pairs, and the extension plates are provided with four rows of bolt connecting holes II which are arranged in two rows.
The square steel ring is characterized in that four rows of bolt connecting holes I which are arranged in four rows and four columns are formed in the front face and the back face of the square steel ring, and four rows of wood screw through holes which are arranged in three columns are formed in the left side face and the right side face of the square steel ring.
The steel wire rope further comprises a reinforcing member, wherein the reinforcing member comprises angle steel and a long bolt; the angle steel is divided into an upper angle steel and a lower angle steel, the angle steel is L-shaped, one side of the angle steel is provided with four bolt connecting holes IV, and the other side of the angle steel is provided with a positioning hole; one side of the angle steel is fixed on the square steel column through a bolt, and the long bolt penetrates through positioning holes in the upper angle steel and the lower angle steel to fixedly connect the angle steel.
Wherein the length of the angle steel is greater than that of the square steel ring.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: (1) the method of square notch connection and bolt connection reinforcement can fully utilize the performance advantages of the combination of the steel column and the wood beam, compared with a beam with a pure wood structure, the steel-wood combined structure is more stable in the stress bearing position, compared with a pure steel structure, the steel-wood combined structure has light dead weight, thereby effectively improving the anti-pulling effect and the service life of the whole structure, and eliminating the influence of partial earthquake load; (2) the wood beam is connected with the steel column through the square notch and the bolt connecting hole, and then the upper group of angle steel and the lower group of angle steel are used for reinforcement, so that the node of the combined structure has better node strength and bearing capacity; (3) the reinforced connecting piece is connected with the steel column and the wood beam through the bolts, on-site welding is not needed, the assembly degree is high, the installation and the disassembly are convenient, the construction process is efficient, and therefore the construction period is effectively shortened.
Drawings
FIG. 1 is a schematic structural view of an assembled steel-wood composite structure according to the present invention;
FIG. 2 is an exploded view of the fabricated steel wood composite structure of the present invention;
FIG. 3 is a schematic structural view of a square steel column;
FIG. 4 is a schematic structural view of a wood beam;
FIG. 5 is a schematic structural view of a square steel ring;
fig. 6 is a schematic structural view of the reinforcing member.
Detailed Description
As shown in FIGS. 1 to 6, the fabricated steel-wood composite structure comprises square steel columns, wood beams and connecting pieces; the square steel column is fixedly connected with the wood beam through a connecting piece; the square steel columns comprise a first square steel column 1 and a second square steel column 2, and the wood beams comprise a first wood beam 3 and a second wood beam 4; the connecting piece comprises a hollow square steel ring 5, and the side wall of the square steel ring 5 is provided with a threaded connecting hole I51; the end parts of the first wood beam 3 and the second wood beam 4 are provided with extension plates 22 with threaded connection holes II21, the extension plates 22 of the first wood beam 3 and the second wood beam 4 enclose a square cavity, the square column 5 is embedded into the square cavity, the end parts of the first square steel column 1 and the second square steel column 2 respectively extend into the square column 5 from openings at the upper side and the lower side of the square column 5, the side wall of the square column 5 into which the first square steel column 1 and the second square steel column 2 extend is also provided with a threaded connection hole III23, bolt holes on the square steel column, the wood beam and the steel ring 5 are arranged correspondingly, and the three are connected and fixed through bolts 8.
The end parts of the first square steel column 1 and the second square steel column 2 are provided with three rows and four columns of bolt connecting holes III 23. The end parts of the first wood beam 3 and the second wood beam 4 form a rectangular notch 10 through the extension plates 22 which are arranged in pairs, and the extension plates 22 are provided with four rows of bolt connecting holes II21 which are arranged in two rows.
The front and the back of the square steel ring 5 are both provided with four rows and four columns of bolt connecting holes I51, and the left and right side surfaces of the square steel ring 5 are provided with four rows and three columns of wood screw through holes 52.
The assembled steel-wood combined structure also comprises a reinforcing member, wherein the reinforcing member comprises angle steel and a long bolt 9; the angle steel is divided into an upper angle steel 6 and a lower angle steel 7, the angle steel is L-shaped, one side of the angle steel is provided with four bolt connecting holes IV71, and the other side of the angle steel is provided with a positioning hole 11; one side of the angle steel is fixed on the square steel column through a bolt, a long bolt 9 penetrates through positioning holes 11 on the upper angle steel 6 and the lower angle steel 7 to fixedly connect the angle steel, and the length of the angle steel is larger than that of the square steel ring 5.
The prefabricated square steel ring 5 is placed at a square notch 10 formed by splicing the first wood beam 3 and the second wood beam 4; the left side and the right side of the prefabricated square steel ring 5 are respectively connected with the first wood beam 3 and the second wood beam 4 through rotating wood screws; respectively inserting the first square steel column 1 and the second square steel column 2 into half positions of the prefabricated square steel ring 5, and connecting and reinforcing the first square steel column 1, the second square steel column 2, the prefabricated square steel ring 5 and the square steel column by using bolts 8 through corresponding bolt connecting holes formed in the square steel column, the wood beam and the prefabricated square steel ring 5; the upper angle steel 6 and the lower angle steel 7 are respectively fixed on two sides of the first square steel column 1 and the second square steel column 2 through bolts, and the upper angle steel 6 and the lower angle steel 7 are sequentially reinforced at two ends of the first wood beam 3 and the second wood beam 4 through positioning holes 11 in the upper angle steel 6 and the lower angle steel 7 through long bolts 9. Two groups of angle steels are fixed on two sides of the square steel column, and long bolts are used for sequentially passing through the positioning holes to reinforce the upper angle steel and the lower angle steel on two sides of the wood beam.
The bolt connecting holes III51 of the first square steel column 1 and the second square steel column 2 correspond to the bolt connecting holes I51 formed in the front and back of the prefabricated square steel ring 5 and the bolt connecting holes II21 at the groove openings of the first wood beam 3 and the second wood beam 4 in position and size one by one; the length of two edges of the angle steel is larger than the sum of the length of the prefabricated square steel ring 5 and the thickness of two ends of the wooden beam notch 10, so that the connection is firmer; the square notch formed by splicing the rectangular notches 10 arranged at the two ends of the first wood beam 3 and the second wood beam 4 is the same as the prefabricated square steel ring 5 in size; the first square steel column 1 and the second square steel column 2 are inserted into half of the position of the prefabricated square steel ring 5, that is, two rows of four rows of bolt connecting holes III23 on the first square steel column 1 and four rows of bolt connecting holes III23 on the second square steel column 2 are combined and correspond to four rows of bolt connecting holes I51 on the prefabricated square steel ring 5.
The assembled steel-wood combined structure is assembled by the following method:
(1) placing a prefabricated square steel ring 5 at a rectangular notch 10 formed by splicing a first wood beam 3 and a second wood beam 4 until the wood beams are flush with the upper and lower surfaces of the prefabricated square steel ring, and connecting the left and right sides of the prefabricated square steel ring with the first wood beam 3 and the second wood beam 4 respectively by rotating wood screws;
(2) inserting a first square steel column 1 and a second square steel column 2 into the half position of a cavity of a prefabricated square steel ring 5 respectively, wherein bolt connecting holes I51 in two rows on the prefabricated square steel ring 5 correspond to bolt connecting holes III23 in two rows below the first square steel column 1, bolt connecting holes I51 in two rows below the prefabricated square steel ring correspond to bolt connecting holes III23 in two rows above the second square steel column 2, and connecting and reinforcing the square steel columns, the wood beams and the prefabricated steel rings through bolts 8;
(3) two groups of upper angle steels 6 are fixed on two sides of a first square steel column 1 through bolts, two groups of lower angle steels 7 are fixed on two sides of a second square steel column 2 through bolts, long bolts 9 are used for reinforcing the upper angle steels and the lower angle steels above and below a wood beam sequentially through positioning holes 11 in the angle steels, and connection between the steel columns and the wood beam is reinforced, so that the assembled type square steel column and wood beam combined connecting structure is formed.
According to the method for reinforcing the steel column and the wood beam by the square notch connection and the bolt connecting piece, the performance advantages of the combination of the steel column and the wood beam can be fully utilized, the connection nodes are connected by the bolts, the assembly degree is high, the installation and the disassembly are convenient, the bearing capacity and the anti-pulling effect of the whole structure are effectively improved, and the service life is prolonged.