Through type steel truss girder

Abstract

The utility model relates to a through type steel truss girder, and belongs to the field of steel truss girders, the through type steel truss girder comprises main truss rods, positioning sleeves, connecting rods and locking mechanisms, the multiple positioning sleeves are arranged on the main truss rods at intervals, and the two ends of the connecting rods are inserted into the positioning sleeves of the two main truss rods which are arranged in parallel at intervals respectively; and the locking mechanism is arranged on the positioning sleeve and is used for positioning the connecting rod in the positioning sleeve. The method has the advantages that the mode that a plurality of steel beams are hoisted in sequence and the connecting position of the two steel beams needs to be positioned to form the steel truss is improved, and the construction efficiency of the through steel truss is effectively improved.

Description

Technical Field

[0001] This application relates to the field of steel truss bridges, and more particularly to a type of under-deck steel truss bridge. Background Technology

[0002] A steel truss bridge is a structural form that transforms a solid steel plate girder bridge into a hollow structure according to certain rules. The overall structure operates like a beam, primarily bearing bending moment and shear force. It consists of a braking system, bridge deck, supports, and piers (abutments). Under-deck steel trusses possess advantages such as structural stability and high load-bearing capacity, and are widely used in bridge construction in my country, especially in bridges spanning railways and roads.

[0003] Currently, the under-bearing steel truss girder is usually prefabricated in the factory into multiple steel beams, which are then transported to the site and hoisted one by one. Each hoisting requires positioning the connection between two steel beams according to the design, and then assembling the two steel beams by welding. This results in a long time to assemble multiple steel beams in sequence, which leads to low construction efficiency. Utility Model Content

[0004] To improve the construction efficiency of under-deck steel truss girders, this application provides an under-deck steel truss girder.

[0005] The technical solution for a bottom-bearing steel truss girder provided in this application is as follows:

[0006] A bottom-bearing steel truss includes a main truss, positioning sleeves, connecting rods, and a locking mechanism. Multiple positioning sleeves are spaced apart on the main truss. The two ends of the connecting rods are respectively inserted into the positioning sleeves of two main trusses arranged in parallel at intervals. The locking mechanism is disposed on the positioning sleeves and is used to position the connecting rods within the positioning sleeves.

[0007] By adopting the above technical solution, construction workers insert multiple connecting rods one by one into multiple positioning sleeves on one of the main trusses. Then, they move another main truss so that the other ends of the multiple connecting rods are inserted one by one into multiple positioning sleeves on the other main truss. The connecting rods are then positioned in the positioning sleeves by a locking mechanism, thus completing the assembly of a steel truss beam. The assembled steel truss beam is then hoisted as a whole. By positioning the connecting rods with positioning sleeves, the method of sequentially hoisting multiple steel beams and positioning the connection points of two steel beams to form a steel truss beam is improved, effectively increasing the construction efficiency of the under-bearing steel truss beam.

[0008] Optionally, the locking mechanism includes a locking bolt and a locking nut, wherein the locking bolt passes through the positioning sleeve and slides on the connecting rod, and the locking nut is threaded onto the locking bolt.

[0009] By adopting the above technical solution, the construction personnel pass the locking bolt through the positioning sleeve and through the connecting rod, and then tighten the locking nut onto the locking bolt. This allows the connecting rod to be positioned within the positioning sleeve, thus facilitating the quick and easy positioning and installation of the connecting rod on the main truss.

[0010] Optionally, the connecting rod has a slot for the locking bolt to pass through, the length of the slot being greater than the diameter of the locking bolt, and a clamping bolt is provided on the connecting rod, the clamping bolt being threaded on the connecting rod and extending to clamp against the locking bolt.

[0011] By adopting the above technical solution, the construction personnel pass the locking bolt through the positioning sleeve and into the slot. The locking bolt can slide in the slot, thereby adjusting the position of the connecting rod in the positioning sleeve. Then, the tightening bolt is rotated so that the tightening bolt tightens the locking bolt, thereby positioning the locking bolt in the slot.

[0012] Optionally, the connecting rod is inclined between the two main trusses, and the inclination directions of adjacent connecting rods are opposite, forming a triangle with the two main trusses that are spaced parallel to each other.

[0013] By adopting the above technical solution, the stability of the connecting rods supporting the two main trusses is improved by arranging multiple connecting rods in a triangular pattern between the two main trusses.

[0014] Optionally, the end of the connecting rod is tapered, and a partition is provided inside the positioning sleeve, which divides the internal space of the positioning sleeve into tapered grooves for the end of the connecting rod to be inserted.

[0015] By adopting the above technical solution, when the construction personnel insert the connecting rod into the positioning sleeve, the conical end of the connecting rod is inserted into the conical groove formed by the partition plate dividing the internal space of the positioning sleeve. The side wall of the conical groove squeezes the end of the connecting rod to position the connecting rod, thereby improving the stability of the connecting rod in the positioning sleeve.

[0016] Optionally, the positioning sleeve is slidably mounted on the main truss, and the positioning sleeve is provided with a positioning mechanism for positioning the positioning sleeve.

[0017] By adopting the above technical solution, construction workers drive the positioning sleeve to slide on the main truss, and the positioning mechanism positions the positioning sleeve on the main truss. During the sliding process of the positioning sleeve, the position and angle of the connecting rod can be adjusted, which improves the convenience of installing the connecting rod between the two main trusses.

[0018] Optionally, the positioning mechanism includes a positioning bolt and a positioning nut. The main truss has multiple insertion holes spaced apart. The positioning bolt passes through the positioning sleeve and through the insertion holes. The positioning nut is threaded onto the positioning bolt and abuts against the positioning sleeve.

[0019] By adopting the above technical solution, after the positioning sleeve slides to the desired position on the main truss, the construction personnel pass the positioning bolt through the positioning sleeve and through the insertion hole, and then tighten the positioning nut onto the positioning bolt so that the positioning nut is pressed against the positioning sleeve, thus positioning the positioning sleeve on the main truss.

[0020] Optionally, the connecting rod is provided with reinforcing ribs.

[0021] By adopting the above technical solution, the rib plate is strengthened to support the connecting rod, thereby improving the structural strength of the connecting rod and ensuring the supporting effect of the connecting rod on the two main trusses.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By positioning the connecting rod with the positioning sleeve, the method of sequentially hoisting multiple steel beams and positioning the connection between two steel beams to form a steel truss beam is improved, which effectively improves the construction efficiency of the under-bearing steel truss beam.

[0024] 2. The locking bolt can slide in the slot, thereby adjusting the position of the connecting rod in the positioning sleeve. Then, the clamping bolt is rotated so that it clamps the locking bolt, thereby positioning the locking bolt in the slot.

[0025] 3. The position and angle of the connecting rod can be adjusted during the sliding process of the positioning sleeve, which improves the convenience of installing the connecting rod between the two main trusses. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the under-bearing steel truss beam according to an embodiment of this application.

[0027] Figure 2 This is a structural schematic diagram of the main truss and positioning sleeve according to an embodiment of this application.

[0028] Figure 3 This is a schematic diagram of the positioning sleeve and connecting rod according to an embodiment of this application.

[0029] Reference numerals: 1. Main truss; 2. Positioning sleeve; 3. Connecting rod; 31. Slot hole; 4. Locking mechanism; 41. Locking bolt; 42. Locking nut; 5. Tightening bolt; 6. Partition plate; 7. Tapered groove; 8. Positioning mechanism; 81. Positioning bolt; 82. Positioning nut; 9. Reinforcing rib. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This application discloses a bottom-bearing steel truss beam.

[0032] Reference Figure 1 , Figure 2 The under-bearing steel truss includes a main truss 1, a positioning sleeve 2, a connecting rod 3, a locking mechanism 4, and a positioning mechanism 8. Multiple positioning sleeves 2 are slidably installed on the main truss 1 at intervals along the length of the main truss 1. The positioning mechanism 8 is installed on the positioning sleeve 2 and is used to position the positioning sleeve 2 on the main truss 1. The positioning mechanism 8 includes a positioning bolt 81 and a positioning nut 82. Multiple insertion holes are provided on the main truss 1 at intervals along the sliding direction of the positioning sleeve 2. The positioning bolt 81 slides through the positioning sleeve 2 and passes through the insertion holes. The positioning nut 82 is threaded onto the positioning bolt 81.

[0033] Construction workers drive the positioning sleeve 2 to slide along the length of the main truss 1. After sliding to the desired position, the positioning bolt 81 is inserted into the positioning sleeve 2 and through the insertion hole on the main truss 1. Then, the positioning nut 82 is tightened onto the positioning bolt 81, so that the position of the positioning sleeve 2 on the main truss 1 can be adjusted conveniently and quickly.

[0034] Reference Figure 1 There are two main trusses 1 arranged at intervals and in parallel. The two ends of the connecting rod 3 are respectively inserted into the positioning sleeves 2 on the two main trusses 1. The connecting rod 3 is inclined between the two main trusses 1, and the inclination direction of adjacent connecting rods 3 is opposite, so that the connecting rod 3 can form a triangle between the two main trusses 1 arranged at intervals and in parallel, which improves the stability of the connecting rod 3 supporting the two main trusses 1. Furthermore, the construction personnel can adjust the position and angle of the connecting rod 3 on the two main trusses 1 by adjusting the position of the positioning sleeves 2 on the main trusses 1, which reduces the accuracy requirement of the positioning sleeves 2 when installing the connecting rod 3 between the two main trusses 1 and improves the convenience of installing the connecting rod 3 between the two main trusses 1.

[0035] Reference Figure 1 , Figure 3 The end of the connecting rod 3 is tapered. A partition 6 is installed on the inner wall of the positioning sleeve 2. A tapered groove 7 is formed between the partition 6 and the inner wall of the positioning sleeve 2 for the end of the connecting rod 3 to be inserted. When the construction personnel insert the connecting rod 3 into the positioning sleeve 2, the end of the connecting rod 3 abuts against the side wall of the tapered groove 7. The side wall of the tapered groove 7 squeezes the end of the connecting rod 3, thereby positioning the connecting rod 3 in the tapered groove 7, effectively improving the stability of the connecting rod 3 between the two main trusses 1.

[0036] Reference Figure 1 , Figure 3 The connecting rod 3 is an I-beam, and multiple reinforcing ribs 9 are installed on the connecting rod 3. The reinforcing ribs 9 support the connecting rod 3, improve the structural strength of the connecting rod 3, and thus ensure the stability of the connecting rod 3 in supporting the two main trusses 1 between the two main trusses 1.

[0037] Reference Figure 1 , Figure 3 The locking mechanism 4 is installed on the positioning sleeve 2. The locking mechanism 4 is used to position the connecting rod 3 in the positioning sleeve 2. The locking mechanism 4 includes a locking bolt 41 and a locking nut 42. The locking bolt 41 is slidably inserted into the positioning sleeve 2. The connecting rod 3 has a slot 31. The length of the slot 31 is greater than the diameter of the locking bolt 41. The locking bolt 41 is slidably inserted into the slot 31. The locking nut 42 is threadedly installed on the locking bolt 41. A clamping bolt 5 is threadedly installed on the connecting rod 3. The clamping bolt 5 extends to abut against the side of the locking bolt 41 away from the positioning sleeve 2.

[0038] After inserting the connecting rod 3 into the positioning sleeve 2, the construction personnel slide the locking bolt 41 through the positioning sleeve 2 and through the slot 31. At this time, the locking bolt 41 can slide in the slot 31, thereby adjusting the position of the connecting rod 3. After adjustment, the construction personnel rotate the tightening bolt 5 so that the tightening bolt 5 is close to the locking bolt 41 and abuts against the side of the locking bolt 41 away from the positioning sleeve 2, positioning the locking bolt 41 in the slot 31. Then, the locking nut 42 is tightened onto the locking bolt 41, thus positioning the connecting rod 3 in the positioning sleeve 2, improving the stability of the connecting rod 3 in the positioning sleeve 2, and allowing the position of the connecting rod 3 to be adjusted according to the actual situation, facilitating the positioning and installation of the connecting rod 3 in the positioning sleeve 2.

[0039] The implementation principle of a bottom-bearing steel truss girder according to an embodiment of this application is as follows: Construction workers insert multiple connecting rods 3 into multiple positioning sleeves 2 on one of the main trusses 1 in a one-to-one correspondence. Then, they move another main truss 1 so that the other ends of the connecting rods 3 are inserted into multiple positioning sleeves 2 on the other main truss 1 in a one-to-one correspondence. During the connection process, the position of the positioning sleeves 2 can be adjusted, thereby adjusting the position and angle of the connecting rods 3, improving the convenience of installing the connecting rods 3 between the two main trusses 1. Then, construction workers use locking bolts 41 and locking nuts 42 to position the connecting rods 3 within the positioning sleeves 2, thus completing the assembly of a steel truss girder. The assembled steel truss girder is then hoisted as a whole. The positioning of the connecting rods 3 by the positioning sleeves 2 improves the method of sequentially hoisting multiple steel beams and positioning the connection points of two steel beams to form a steel truss girder, effectively improving the construction efficiency of the bottom-bearing steel truss girder.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A through steel truss characterized in that: The utility model provides a kind of main truss, including main truss (1), positioning sleeve (2), connecting rod (3) and locking mechanism (4), multiple positioning sleeve (2) are arranged at intervals on main truss (1), the both ends of connecting rod (3) are respectively inserted and arranged in the positioning sleeve (2) of two main trusses (1) arranged at intervals in parallel, and locking mechanism (4) is arranged on positioning sleeve (2) and is used to position connecting rod (3) in positioning sleeve (2).

2. The through-type steel truss girder according to claim 1, wherein: The locking mechanism (4) includes a locking bolt (41) and a locking nut (42), the locking bolt (41) passes through the positioning sleeve (2) and slides through the connecting rod (3), and the locking nut (42) is threadedly arranged on the locking bolt (41).

3. The through-type steel truss girder according to claim 2, wherein: The connecting rod (3) is provided with a slot hole (31) for the locking bolt (41) to pass through, the length of the slot hole (31) is greater than the diameter of the locking bolt (41), and the connecting rod (3) is provided with a clamping bolt (5), the clamping bolt (5) is threadedly arranged on the connecting rod (3) and extends to abut against the locking bolt (41).

4. The through truss steel girder according to claim 1, wherein: The connecting rod (3) is arranged inclined between the two main trusses (1), and the inclined directions of adjacent connecting rods (3) are opposite to form a triangle with the two main trusses (1) arranged at intervals in parallel.

5. The through-type steel truss girder according to claim 1, wherein: The end of the connecting rod (3) is conically arranged, the positioning sleeve (2) is provided with a partition plate (6), and the partition plate (6) divides the internal space of the positioning sleeve (2) into a tapered groove (7) for inserting the end of the connecting rod (3).

6. The through-type steel truss girder according to claim 1, wherein: The positioning sleeve (2) is slidably arranged on the main truss (1), and the positioning sleeve (2) is provided with a positioning mechanism (8) for positioning the positioning sleeve (2).

7. The through-type steel truss girder according to claim 6, wherein: The positioning mechanism (8) includes a positioning bolt (81) and a positioning nut (82), the main truss (1) is provided with a plurality of insertion holes at intervals, the positioning bolt (81) is arranged on the positioning sleeve (2) and passes through the insertion hole, and the positioning nut (82) is threadedly arranged on the positioning bolt (81) and abuts against the positioning sleeve (2).

8. The through-type steel truss girder according to claim 1, wherein: The connecting rod (3) is provided with a reinforcing rib plate (9).

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