A high-strength and corrosion-resistant steel bar truss

Abstract

The present invention provides a high-strength and corrosion-resistant steel bar truss, belonging to the technical field of steel bar trusses, which includes a wooden board. A plurality of groups of lower chord steel bars are arranged at the upper end of the wooden board. Each group of the lower chord steel bars has a pair. The wooden board and the lower chord steel bars are connected through a connecting component. Web steel bars are welded on the lower chord steel bars. The heads of a pair of the web steel bars are welded to the same upper chord steel bar. A reinforcing member is arranged between a pair of the web steel bars. Support vertical steel bars are welded at both ends of the upper chord steel bar. The present invention solves the problems that the overall strength of the existing steel bar truss is not high, and its use in a humid environment will cause its corrosion, resulting in a reduction in the service life of the steel bar truss.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel bar trusses, and particularly relates to a high-strength and corrosion-resistant steel bar truss. Background Art

[0002] A truss formed by using steel bars as the upper chord, lower chord and web members and connected by resistance spot welding is called a steel bar truss. Generally, the steel bar truss is fixed on the bottom plate through the cooperation of a buckle and a bolt. During the construction stage, the steel bar truss and the bottom plate are laid on the beam in cooperation, and then concrete is poured. Since it completely replaces the formwork function, the formwork erection and disassembly work are reduced, and the construction efficiency of the floor slab is greatly improved.

[0003] The existing steel bar truss is only composed of upper chord steel bars, lower chord steel bars and web members, and is supported by the upper chord steel bars, lower chord steel bars and web members. The overall strength is not high, and the welding joints of the upper chord steel bars and the lower chord steel bars, the lower chord steel bars and the web members, and the upper chord steel bars, lower chord steel bars and web members will be corroded when used in a humid environment, resulting in a reduced service life of the steel bar truss. Summary of the Invention

[0004] The present invention provides a high-strength and corrosion-resistant steel bar truss, aiming to solve the problems that the existing steel bar truss has low overall strength and will be corroded when used in a humid environment, resulting in a reduced service life of the steel bar truss.

[0005] An embodiment of the present invention provides a high-strength and corrosion-resistant steel bar truss, including a wooden board. A plurality of groups of lower chord steel bars are arranged at the upper end of the wooden board. Each group of the lower chord steel bars has 1 pair. The wooden board and the lower chord steel bars are connected through a connecting assembly. Web member steel bars are welded on the lower chord steel bars. The heads of 1 pair of the web member steel bars are welded to the same upper chord steel bar. A reinforcing member is arranged between 1 pair of the web member steel bars. Support vertical steel bars are welded at both ends of the upper chord steel bar.

[0006] Further, the connecting assembly includes a first connecting part, a second connecting part and a fastening part. The first connecting part is used to be mutually embedded with the lower chord steel bars;

[0007] The second connecting part is arranged on the lower wall surface of the wooden board, and the second connecting part is used to carry the wooden board;

[0008] The fastening part is used to tightly connect the first connecting part and the second connecting part.

[0009] Further, the first connecting part includes a fastener arranged at the upper end of the wooden board, a passage on the bottom wall surface of the fastener, and a structure in which both sides of the X axis at the head of the passage are inclined;

[0010] The fastening part includes a first movable piece and a rotating column. The number of the first movable pieces is one pair, and the one pair of the first movable pieces are arranged face to face on both sides of the X axis in the passage;

[0011] The head of the first movable piece is a trapezoidal piece that matches the head of the passage;

[0012] A second groove is reserved on the upper wall surface of the second connecting part. Both sides of the inner end of the second groove extend outward in the X axis direction. A second movable piece that matches the second groove is arranged at the tail of the first movable piece. Both sides of the tail of the second movable piece extend outward in the X axis direction;

[0013] The fastening piece is located between the one pair of the first movable pieces. The rotating column passes through a second circular hole reserved on the second connecting part and is fixedly connected to the fastening piece. The fastening piece has a position A for pressing the first movable piece against the inner wall surface of the passage and a position B for canceling the pressing of the first movable piece.

[0014] Further, the second connecting part includes a first square piece, and the second groove is located in the middle of the upper wall surface of the first square piece;

[0015] The included angle between the second circular hole and the second groove is one-fourth of a circle, and the second circular hole and the second groove are connected to each other;

[0016] A second stop piece is arranged on the outer peripheral surface of the tail of the rotating column. The included angle between the rotating column and the second stop piece is one-fourth of a circle. A first stop piece that is spaced apart and connected to the second stop piece is fixedly connected to the lower wall surface of the first square piece;

[0017] The second connecting part further includes one pair of second square pieces for blocking the first square piece from moving away from the second movable piece. The one pair of the second square pieces are arranged face to face at both ends of the first square piece.

[0018] Further, the fastening part further includes a disc spring, and the disc spring is arranged between the first square piece and the fastening piece.

[0019] Further, a first circular hole is reserved on the upper wall surface of the passage. One end of the rotating column passes through the fastening piece and is rotationally connected to the first circular hole.

[0020] Further, the two pairs of wall surfaces of the passage in the X axis direction in the first connecting part are both closed;

[0021] Both side walls of the passage in the X axis direction are reserved with first grooves. Stop protrusions that are arranged face to face with the first grooves are fixedly connected to the side walls of the first movable piece.

[0022] Furthermore, an insertion bar is fixedly connected to the lower wall surface of the fastener. The insertion bar is inserted into a hole in the wooden board. A channel is reserved on one side of the head of the fastener, and the channel is embedded with the lower chord steel bar.

[0023] Furthermore, the reinforcing member includes vertical rib bars and arc rib bars. The vertical rib bars are welded to the upper chord steel bars, and the other ends of the vertical rib bars are welded with arc rib bars. The two ends of the arc rib bars are respectively connected to the web member steel bars.

[0024] Furthermore, anti-corrosion coatings are sprayed on the surfaces of the lower chord steel bar, the web member steel bar, the upper chord steel bar, the vertical rib bar, the arc rib bar and the supporting vertical steel bar. Anti-corrosion coatings are also sprayed at the welding joints of the lower chord steel bar and the web member steel bar, the web member steel bar and the upper chord steel bar, the upper chord steel bar and the vertical rib bar, the vertical rib bar and the arc rib bar, the web member steel bar and the arc rib bar, and the upper chord steel bar and the supporting vertical steel bar.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. Through the installation of the reinforcing member, the vertical rib bars and arc rib bars on the reinforcing member can disperse the forces received on the steel bar truss, thereby enhancing the overall strength of the steel bar truss. At the same time, anti-corrosion coatings are sprayed on the surfaces of the lower chord steel bar, the web member steel bar, the upper chord steel bar, the vertical rib bar, the arc rib bar and the supporting vertical steel bar. Additionally, anti-corrosion coatings are sprayed at the welding joints of the lower chord steel bar and the web member steel bar, the web member steel bar and the upper chord steel bar, the upper chord steel bar and the vertical rib bar, the vertical rib bar and the arc rib bar, the web member steel bar and the arc rib bar, and the upper chord steel bar and the supporting vertical steel bar. As a result, the anti-corrosion performance of the entire steel bar truss is greatly improved, thereby significantly extending the service life of the steel bar truss and reducing it.

[0027] 2. In the present invention, the first connecting part is embedded with the lower chord steel bar, and the wooden board is carried by the second connecting part. Then, the first connecting part and the second connecting part are firmly connected to each other through the fastening part, and thus, the fastening and disassembly between the steel bar truss and the wooden board can be achieved very conveniently.

[0028] Other features and advantages of the present invention will be described in the following description, and some of them will become obvious from the description, or can be understood by implementing the present invention. The objectives and other advantages of the present invention can be realized and obtained through the structures specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings are used to provide a further understanding of the present invention and constitute a part of the description. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0030] Figure 1 Schematic diagram of the connection structure between the steel bar truss and the wooden board according to an embodiment of the present invention;

[0031] Figure 2 Schematic diagram of the connection component structure according to an embodiment of the present invention;

[0032] Figure 3 Schematic diagram of the cross-section structure of the fastener according to an embodiment of the present invention;

[0033] Figure 4 Schematic diagram of the movable piece 1 according to an embodiment of the present invention;

[0034] Figure 5 Schematic diagram of the installation structure of the fastening piece according to an embodiment of the present invention;

[0035] Figure 6 Schematic diagram of the connection part 2 according to an embodiment of the present invention;

[0036] Figure 7 Schematic diagram of the structure when the fastening piece is at position A according to an embodiment of the present invention;

[0037] Figure 8 Schematic diagram of the structure when the fastening piece is at position B according to an embodiment of the present invention;

[0038] Figure 9 Schematic diagram of the structure when the fastening piece changes its orientation according to an embodiment of the present invention;

[0039] Reference numerals: 1, wooden board; 2, fastener; 21, insert bar; 22, channel; 3, connection component; 313, passage; 314, groove 1; 315, round hole 1; 321, square piece 1; 322, stop piece 1; 323, square piece 2; 324, round hole 2; 325, groove 2; 331, movable piece 1; 332, trapezoidal piece; 333, movable piece 2; 334, stop protrusion; 335, square piece 3; 336, upper surface; 341, rotating column; 342, fastening piece; 343, stop piece 2; 344, disc spring; 345, square piece 4; 4, lower chord steel bar; 5, web member steel bar; 6, upper chord steel bar; 7, reinforcement member; 71, vertical rib; 72, arc rib; 8, supporting vertical steel bar. Detailed implementation manners

[0040] In order to make the objectives, technical solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0041] Referring to Figures 1-9 , an embodiment of the present invention provides a high-strength and corrosion-resistant steel bar truss, including a wooden board 1. A plurality of groups of lower chord steel bars 4 are arranged on the upper end of the wooden board 1. Each group of lower chord steel bars 4 has a pair. The wooden board 1 and the lower chord steel bars 4 are connected via a connecting assembly 3. Web steel bars 5 are welded on the lower chord steel bars 4. The heads of a pair of web steel bars 5 are welded to the same upper chord steel bar 6. A reinforcing member 7 is arranged between a pair of web steel bars 5. Support vertical steel bars 8 are welded at both ends of the upper chord steel bar 6.

[0042] To enhance the strength of the lower chord steel bar 4, a columnar bar one is welded on the outer peripheral surface of the lower chord steel bar 4. Through the columnar bar one, the impulse borne by the lower chord steel bar 4 can be dispersed, thereby enhancing the strength of the lower chord steel bar 4.

[0043] To enhance the strength of the web steel bar 5, a columnar bar two is welded on the outer peripheral surface of the web steel bar 5. Through the columnar bar two, the impulse borne by the web steel bar 5 can be dispersed, thereby enhancing the strength of the web steel bar 5.

[0044] To enhance the strength of the upper chord steel bar 6, a columnar bar three is welded on the outer peripheral surface of the upper chord steel bar 6. Through the columnar bar three, the impulse borne by the upper chord steel bar 6 can be dispersed, thereby enhancing the strength of the upper chord steel bar 6.

[0045] The connecting assembly 3 includes a first connecting portion, a second connecting portion, and a fastening portion. The first connecting portion is used to be mutually embedded with the lower chord steel bar 4; the second connecting portion is arranged on the lower wall surface of the wooden board 1, and the second connecting portion is used to carry the wooden board 1; the fastening portion is used to tightly connect the first connecting portion and the second connecting portion. When disassembling, the tight connection between the first connecting portion and the second connecting portion can be cancelled through the fastening portion.

[0046] During use, through the mutual embedding of the first connecting portion and the lower chord steel bar 4, and through the second connecting portion to carry the wooden board 1, and then through the fastening portion to tightly connect the first connecting portion and the second connecting portion, the tight connection between the fastener 2 and the wooden board 1 can be conveniently achieved.

[0047] The connecting part one includes a fastener 2 installed on the upper end of the wooden board 1, a passage 313 on the bottom wall surface of the fastener 2, and a structure with both sides of the head of the passage 313 inclined in the X-axis direction; the fastening part includes a movable piece one 331 and a rotating column 341. The number of the movable pieces one 331 is a pair. A pair of movable pieces one 331 are arranged face to face on both sides of the X-axis in the passage 313; the head of the movable piece one 331 is a trapezoidal piece 332 that matches the head of the passage 313; a groove two 325 is reserved on the upper wall surface of the connecting part two. Both sides of one end of the groove two 325 extend outward in the X-axis direction. A movable piece two 333 that matches the groove two 325 is installed at the tail of the movable piece one 331. Both sides of the tail of the movable piece two 333 extend outward in the X-axis direction; a fastening piece 342 is located between a pair of movable pieces one 331. The rotating column 341 is fixedly connected to the fastening piece 342 through a circular hole two 324 reserved on the connecting part two. The fastening piece 342 has a position A where the movable piece one 331 is pressed against the inner wall surface of the passage 313 and a position B where the pressing of the movable piece one 331 is cancelled. Place the head of the movable piece one 331 into the passage 313, and make the side wall of the trapezoidal piece 332 fit the inner wall surface of the passage 313, and place the movable piece two 333 into the groove two 325. Then twist the rotating column 341. At this time, the fastening piece 342 rotates with the rotating column 341. When the fastening piece 342 rotates to the position A, then press a pair of movable pieces one 331 against the two side walls in the X-axis direction of the passage 313 respectively through the fastening piece 342. Then make the head of the movable piece one 331 be embedded in the passage 313 and unable to move out, and through the cooperation of the movable piece two 333 and the groove two 325, it can effectively prevent the head of the movable piece one 331 from moving out of the connecting part two. Then effectively achieve the fastening of the fastener 2 and the wooden board 1; reverse-rotate the rotating column 341, and the pressing of the fastening piece 342 on the movable piece one 331 can be cancelled, which is beneficial to the disassembly of the parts.

[0048] The connecting part two includes a square piece one 321, and the groove two 325 is located in the middle of the upper wall surface of the square piece one 321; the included angle between the circular hole two 324 and the groove two 325 is one-fourth of a circle, and the circular hole two 324 and the groove two 325 are connected to each other, making the structure of the connecting part two more concise.

[0049] A second stop piece 343 is installed on the outer peripheral surface of the tail of the rotating column 341. The angle between the rotating column 341 and the second stop piece 343 is one-quarter of a circle. A first stop piece 322, which is spaced apart from the second stop piece 343, is fixed to the lower wall surface of the first square piece 321. Then, when the fastening piece 342 is placed in position A, the second rotation of the fastening piece 342 can be prevented by the blocking function between the first stop piece 322 and the second stop piece 343. When the fastening is cancelled, the rotating column 341 is pulled axially in the Y direction of the rotating column 341, and then the rotating column 341 is twisted, so that the pressing of the fastening piece 342 against the first movable piece 331 can be cancelled; when fastening, the upper wall surface of the second stop piece 343 fits against the lower wall surface of the first square piece 321.

[0050] The second connecting part further includes a pair of second square pieces 323 for blocking the first square piece 321 from moving away from the second movable piece 333. The pair of second square pieces 323 are arranged face to face at both ends of the first square piece 321. Then, the first square piece 321 can be effectively prevented from moving away from the second movable piece 333 through the second square pieces 323.

[0051] The fastening part further includes a disc spring 344. The disc spring 344 is installed between the first square piece 321 and the fastening piece 342. Then, the upper wall surface of the second stop piece 343 can be effectively ensured to fit against the lower wall surface of the first square piece 321. When the rotating column 341 is pulled downward, the disc spring 344 is compressed; the head of the first movable piece 331 is a trapezoidal structure with an angle of one-quarter of a circle, and the fastening piece 342 can be a frustum of a pyramid with six inclined sides. The center of the rotating column 341 is fixedly connected to the fastening piece 342. The smaller sides at both ends of the fastening piece 342 are used to closely fit against the adjacent sides of the first movable piece 331 to achieve the pressing against the first movable piece 331. Then, the fastening piece 342 and the first movable piece 331 are in face-to-face contact, enhancing the fastening degree and reducing the loss caused by relative movement between them. When the rotating column 341 pulls the fastening piece 342 to rotate one-quarter of a circle in the fastening direction, the components are firmly connected. At this time, since the first movable piece 331 has a blocking function on the fastening piece 342, the rotating column 341 cannot rotate secondarily in the fastening direction, making the fastening faster.

[0052] In order to provide a stronger stop for the rotating column 341, a circular hole 315 is reserved on the upper wall surface of the passage 313. One end of the rotating column 341 passes through the fastening piece 342 and is rotationally connected to the circular hole 315. Then, through the circular hole 315, the installation of the rotating column 341 can be oriented and the rotating frame can be provided. A square piece 345 is fixedly connected to the tail of the rotating column 341, which is conducive to manually twisting the rotating column 341 to rotate, so that when strong fastening or disassembly is required, the square piece 345 can be used to twist to fasten or disassemble it; the two ends of the movable piece 331 in the Y-axis direction can be fixedly connected through the square piece 335. The upper surface 336 of the square piece 335 is used to block the fastening piece 342, and then the fastening piece 342 can be stopped in the Y-axis direction.

[0053] The two pairs of wall surfaces of the passage 313 in the X-axis direction in the connecting part 1 are both closed, which can effectively prevent the movable piece 331 from moving out of the passage 313.

[0054] Grooves 314 are reserved on the two side walls of the passage 313 in the X-axis direction. A stop protrusion 334 that faces the groove 314 is fixedly connected to the side wall of the movable piece 331. When the fastening piece 342 presses the movable piece 331 against the side wall of the passage 313, the stop protrusion 334 is inserted into the groove 314, and then the movable piece 331 can be better stopped.

[0055] In order to prevent the fastener 2 from moving randomly during installation, a pair of inserts 21 are fixedly connected to the lower wall surface of the fastener 2. The inserts 21 are inserted into the holes on the wooden board 1. A channel 22 is reserved on one side of the head of the fastener 2. The channel 22 is inserted into the lower chord steel bar 4. Through the channel 22, it is convenient to install the lower chord steel bar 4 on the fastener 2.

[0056] In order to enhance the overall strength of the steel bar truss, the reinforcement member 7 includes a vertical rib 71 and an arc rib 72. The vertical rib 71 is welded to the upper chord steel bar 6. The other end of the vertical rib 71 is welded to the arc rib 72. The two ends of the arc rib 72 are respectively connected to the web bar steel bar 5. The vertical rib 71 and the arc rib 72 can disperse the force received on the steel bar truss.

[0057] To improve the anti-corrosion performance of the steel bar truss, anti-corrosion coatings are sprayed on the surfaces of the lower chord steel bars 4, web member steel bars 5, upper chord steel bars 6, vertical rib bars 71, arc rib bars 72 and supporting vertical steel bars 8. Anti-corrosion coatings are also sprayed at the welded joints of the lower chord steel bars 4 and the web member steel bars 5, the welded joints of the web member steel bars 5 and the upper chord steel bars 6, the welded joints of the upper chord steel bars 6 and the vertical rib bars 71, the welded joints of the vertical rib bars 71 and the arc rib bars 72, the welded joints of the web member steel bars 5 and the arc rib bars 72, and the welded joints of the upper chord steel bars 6 and the supporting vertical steel bars 8. The anti-corrosion of the steel bar truss is achieved through the anti-corrosion coating, thereby greatly extending the service life of the steel bar truss and reducing it.

[0058] The specific implementation method is as follows: When in use, anti-corrosion coatings are evenly sprayed on the surfaces of the lower chord steel bars 4 welded with columnar strip one, the web member steel bars 5 welded with columnar strip two, the upper chord steel bars 6, the vertical rib bars 71, the arc rib bars 72 and the supporting vertical steel bars 8. Then, the lower chord steel bars 4 welded with columnar strip one, the web member steel bars 5 welded with columnar strip two and the upper chord steel bars 6 are correspondingly welded into a steel bar truss. Next, anti-corrosion coatings are evenly sprayed at the welded joints of the lower chord steel bars 4 and the web member steel bars 5, the welded joints of the web member steel bars 5 and the upper chord steel bars 6, the welded joints of the upper chord steel bars 6 and the vertical rib bars 71, the welded joints of the vertical rib bars 71 and the arc rib bars 72, the welded joints of the web member steel bars 5 and the arc rib bars 72, and the welded joints of the upper chord steel bars 6 and the supporting vertical steel bars 8, so as to enhance the anti-corrosion function of the steel bar truss. The lower chord steel bars 4 are inserted into the channels 22 on the fasteners 2. A pair of movable pieces one 331 are sequentially placed into the passage 313 from the mouth of the passage 313 on the fastener 2. The insertion bars 21 on the fastener 2 are correspondingly inserted into the holes on the wooden board 1. The square piece one 321 is placed on the lower wall surface of the wooden board 1. The fastening piece 342 passes through the groove reserved on the wooden board 1 and extends between the pair of movable pieces one 331. The square piece four 345 is rotated one-quarter of a turn. The square piece four 345 drives the rotation column 341 to rotate. The rotation column 341 makes the fastening piece 342 press the movable piece one 331 against the two side walls of the passage 313 in the X-axis direction, thereby achieving fastening and preventing the fastener 2 and the square piece one 321 from disassembling, and then achieving rapid connection. The cooperation between the groove one 314 and the stop protrusion 334 in the connection assembly 3, and the matching structure between the rotation column 341 and the round hole one 315 enhance its stop effect, making its stop faster, and then achieving the connection between the steel bar truss and the wooden board 1. Concrete is poured on the wooden board 1 according to requirements. After the concrete solidifies, the wooden board 1 is disassembled. The square piece four 345 is rotated counterclockwise one-quarter of a turn, and the square piece four 345 is pulled to pull the fastening piece 342 out of the passage 313, and the wooden board 1 is removed. Then, the movable pieces one 331 in the passage 313 are sequentially taken out. At the same time, the addition of columnar strip one, columnar strip two, columnar strip three, vertical rib bars 71 and arc rib bars 72 on the steel bar truss enhances the strength of the entire steel bar truss, ensuring that the load-bearing capacity of the steel bar truss is greater.

[0059] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A high-strength and corrosion-resistant steel bar truss, including a wooden board, characterized in that, At the upper end of the wooden board, multiple groups of lower chord steel bars are installed. Each group of the lower chord steel bars has a pair. The wooden board and the lower chord steel bars are connected via a connecting component. The lower chord steel bars are welded with web member steel bars. The heads of a pair of the web member steel bars are welded to the same upper chord steel bar. A reinforcing member is installed between a pair of the web member steel bars. The two ends of the upper chord steel bar are welded with supporting vertical steel bars; The connecting component includes a first connecting part, a second connecting part, and a fastening part. The first connecting part is used for mutual embedding with the lower chord steel bars; The second connecting part is installed on the lower wall surface of the wooden board. The second connecting part is used for carrying the wooden board; The fastening part is used for tightly connecting the first connecting part and the second connecting part; The first connecting part includes a fastener installed at the upper end of the wooden board. There is a passage on the bottom wall surface of the fastener. The two sides of the head of the passage in the X-axis direction are inclined structures; The fastening part includes a first movable piece and a rotating column. The number of the first movable pieces is a pair. A pair of the first movable pieces are arranged face to face on the two sides in the X-axis direction in the passage; The head of the first movable piece is a trapezoidal piece that matches the head of the passage; On the upper wall surface of the second connecting part, a second groove is reserved. The two sides of one end in the X-axis direction in the second groove extend outwards. A second movable piece that matches the second groove is installed at the tail of the first movable piece. The two sides of the tail of the second movable piece extend outwards in the X-axis direction; A fastening piece is located between a pair of the first movable pieces. The rotating column passes through a second round hole reserved on the second connecting part and is fixedly connected with the fastening piece. The fastening piece has a position A for pressing the first movable piece against the inner wall surface of the passage and a position B for canceling the pressing of the first movable piece; 2. A high-strength and corrosion-resistant steel bar truss according to claim 1, characterized in that: The second connecting part includes a first square piece. The second groove is located in the middle of the upper wall surface of the first square piece; The included angle between the second round hole and the second groove is one-fourth of a circle, and the second round hole and the second groove are connected to each other; A second stop piece is installed on the outer peripheral surface of the tail of the rotating column. The included angle between the rotating column and the second stop piece is one-fourth of a circle. A first stop piece that is spaced and connected with the second stop piece is fixedly connected to the lower wall surface of the first square piece; The second connecting part further includes a pair of second square pieces for blocking the first square piece from moving away from the second movable piece. A pair of the second square pieces are arranged face to face at the two ends of the first square piece; 3. A high-strength and corrosion-resistant steel bar truss according to claim 2, characterized in that: The fastening part further includes a disc spring. The disc spring is installed between the first square piece and the fastening piece; 4. A high-strength and corrosion-resistant steel bar truss according to claim 3, characterized in that: A first round hole is reserved on the upper wall surface of the passage. One end of the rotating column passes through the fastening piece and is rotationally connected with the first round hole; 5. A high-strength and corrosion-resistant steel bar truss according to claim 4, characterized in that: The two pairs of wall surfaces in the X-axis direction of the passage in the first connecting part are both closed; Grooves are reserved on the two side walls in the X-axis direction of the passage. Stop protrusions that are arranged face to face with the grooves are fixedly connected to the side walls of the first movable piece; 6. A high-strength and corrosion-resistant steel bar truss according to claim 1, characterized in that: A pair of insertion bars are fixedly connected to the lower wall surface of the fastener. The insertion bars are inserted into the holes on the wooden board. A passage is reserved on one side of the head of the fastener. The passage is connected with the lower chord steel bars by embedding; 7. A high-strength and corrosion-resistant steel bar truss according to claim 1, characterized in that: The reinforcement member includes vertical ribs and arc-shaped ribs. The vertical ribs are welded to the upper chord steel bars, and the other ends of the vertical ribs are welded with arc-shaped ribs. The two ends of the arc-shaped ribs are respectively connected with the web member steel bars.

8. A high-strength and corrosion-resistant steel bar truss according to claim 7, characterized in that: Anti-corrosion coatings are sprayed on the surfaces of the lower chord steel bars, web member steel bars, upper chord steel bars, vertical ribs, arc-shaped ribs and supporting vertical steel bars. Anti-corrosion coatings are also sprayed at the welding joints of the lower chord steel bars and the web member steel bars, the welding joints of the web member steel bars and the upper chord steel bars, the welding joints of the upper chord steel bars and the vertical ribs, the welding joints of the vertical ribs and the arc-shaped ribs, the welding joints of the web member steel bars and the arc-shaped ribs, and the welding joints of the upper chord steel bars and the supporting vertical steel bars.

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