Light gauge steel joist basic structure system of light partition wall and construction method therefor

Abstract

A light gauge steel joist basic structure system of a light partition wall is disclosed, comprising: top and ground joists and vertical joists. The top and ground joists comprise a ground joist and a top joist. The vertical joist is provided between the top and ground joists by means of a first connection member. The vertical joist and the vertical joist are fixedly connected to each other by means of the first connection member and/or a second connection member. V-shaped slots are symmetrically provided on two side walls of the top and ground joists. The V-shaped slots are provided on the side walls and the bottoms of the vertical joists. A construction method for a light gauge steel joist basic structure of a light partition wall is also disclosed. The light gauge steel joist basic structure system is simple and fast to be constructed and has desirable flatness.

What is claimed is: 
     
         1 . A light gauge steel joist basic structure system of a light partition wall applicable in a light partition wall system comprising a top and ground joist and a vertical joist both having a U-shaped groove and a same structure and size, wherein the U-shaped grooves of the top and ground joist and the vertical joist have a U-shaped flanging; wherein the top and ground joist comprises a ground joist fixedly connected to the ground and a top joist arranged above the ground joist, the vertical joist is installed between the ground joist and the top joist through a first connection member, while the vertical joists are fixedly connected to each other via the first connection member and/or a second connection member; V-shaped grooves are symmetrically provided on both side walls of the top and ground joist, while V-shaped grooves are provided on both side walls and bottom of the vertical joist; wherein
 the first connection member comprises a first connection portion connected to the vertical joist and a second connection portion connected to the top and ground joist, the first connection portion and the second connection portion are constructed as a whole; wherein the first connection portion comprises two first connection sheets respectively abutted against ends of the U-shaped flanging of the U-shaped groove of the vertical joist, wherein the first connection sheet is respectively provided at its both sides with a first pressing sheet which is warped outwards to be clamped into the U-shaped flanging of the U-shaped groove of the vertical joist, wherein the second connection portion comprises two second connection sheets respectively inserted into the U-shaped groove of the top and ground joist and abutted against side walls of the U-shaped groove of the vertical joist; wherein   the second connection member comprises a square connection bottom plate provided respectively at its left and right sides with a left connection plate and a right connection plate extended vertically, as well as respectively at its upper and lower sides with an upper connection plate and a lower connection plate extended vertically; wherein the left connection plate, the right connection plate, the upper connection plate and the lower connection plate are connected in a circle to from a square groove together with the square connection bottom plate; wherein the square connection bottom plate is further provided with a fixation through hole and at least one oval groove projecting outwardly with a size matches that of the V-shaped groove of the vertical joist; wherein   a cross-core joist penetrating through the U-shaped groove between the vertical joists is arranged between the top joist and the ground joist, while each vertical joist is provided with a convex hole matching the cross-core joist, wherein the cross-core joist is penetrated through the convex hole and is fixedly connected therewith.   
     
     
         2 . A light gauge steel joist basic structure system of a light partition wall applicable in a light partition wall system comprising a top and ground joist and a vertical joist both having a U-shaped groove and a same structure and size, wherein the U-shaped grooves of the top and ground joist and the vertical joist have a U-shaped flanging; wherein the top and ground joist comprises a ground joist fixedly connected to the ground and a top joist arranged above the ground joist, the vertical joist is installed between the ground joist and the top joist through a first connection member, while the vertical joists are fixedly connected to each other via the first connection member and/or a second connection member; V-shaped grooves are symmetrically provided on both side walls of the top and ground joist, while V-shaped grooves are provided on both side walls and bottom of the vertical joist. 
     
     
         3 . The light gauge steel joist basic structure system of a light partition wall according to  claim 2 , wherein the first connection member comprises a first connection portion connected to the vertical joist and a second connection portion connected to the top and ground joist, the first connection portion and the second connection portion are constructed as a whole; wherein the first connection portion comprises two first connection sheets respectively abutted against ends of the U-shaped flanging of the U-shaped groove of the vertical joist, wherein the first connection sheet is respectively provided at its both sides with a first pressing sheet which is warped outwards to be clamped into the U-shaped flanging of the U-shaped groove of the vertical joist, wherein the second connection portion comprises two second connection sheets respectively inserted into the U-shaped groove of the top and ground joist and abutted against side walls of the U-shaped groove of the vertical joist. 
     
     
         4 . The light gauge steel joist basic structure system of a light partition wall according to  claim 2 , wherein the second connection member comprises a square connection bottom plate provided respectively at its left and right sides with a left connection plate and a right connection plate extended vertically, as well as respectively at its upper and lower sides with an upper connection plate and a lower connection plate extended vertically; wherein the left connection plate, the right connection plate, the upper connection plate and the lower connection plate are connected in a circle to from a square groove together with the square connection bottom plate; wherein the square connection bottom plate is further provided with a fixation through hole and at least one oval groove projecting outwardly with a size matches that of the V-shaped groove of the vertical joist. 
     
     
         5 . The light gauge steel joist basic structure system of a light partition wall according to  claim 2 , wherein a cross-core joist penetrating through the U-shaped groove between the vertical joists is arranged between the top joist and the ground joist, while each vertical joist is provided with a convex hole matching the cross-core joist, wherein the cross-core joist is penetrated through the convex hole and is fixedly connected therewith; wherein
 each of the convex hole is provided with a third connection member which comprises a first clamping portion used to establish a fixed connection with the vertical joist, and a second clamping portion for clamping and fixing the cross-core joist; wherein the first clamping portion comprises a first clamping sheet extending outward vertically at both sides of the third connection member and clamping at the U-shaped groove of the vertical joist, and a second clamping sheet clamping into the U-shaped flanging of the U-shaped groove of the vertical joist, wherein the second clamping sheet is arranged at both sides of the first clamping sheet, and the second clamping portion is a U-shaped notch matching with the cross-core joist.   
     
     
         6 . The light gauge steel joist basic structure system of a light partition wall according to  claim 2 , wherein the top and ground joist and the first connection member are fixedly connected via self-drilling screws; the vertical joist and the first connection member and/or the second connection member are fixedly connected via self-drilling screws; and the cross-core joist and the first connection member and/or the second connection member are fixedly connected via self-drilling screws; wherein the self-drilling screws are all drilled in from the V-shaped grooves and screw heads of the self-drilling screws are hidden in the V-shaped grooves. 
     
     
         7 . A construction method for a light gauge steel joist basic structure system of a light partition wall comprising following steps:
 S1. positioning a wall position of a light partition wall, comprising determining a wall position of the light partition wall on ground surface and drawing lines according to a deepening drawing;   S2. installing a ground joist;   S3. suspending lines and installing a top joist;   S4. installing a vertical joist which is vertically arranged, comprising fixedly connecting a first connection portion of a first connection member with ends of the vertical joist, and fixedly connecting a second connection portion of the first connection member into U-shaped groove of the ground joist or the top joist;   S5. installing a vertical joist which is transversely arranged, comprising fixedly connecting ends of the vertical joist which is transversely arranged to an opened side or a closed side of the vertical joist which is vertically arranged via the first connection member and/or a second connection member;   S6. installing a cross-core joist, comprising fixing and clamping a third connection member in a convex hole of the vertical joist, penetrating the cross-core joist through the vertical joist, and fixing and clamping the cross-core joist with the third connection member.