Tensioning tool structure of double-lug-plate stay cable at steel structure node

Abstract

The utility model relates to a tensioning tool structure of a double-lug-plate stay cable at a steel structure node, which comprises a heavy frame, a tensioning device and a tensioning device, the heavy frame is arranged on a cable body of the stay cable in a penetrating manner, and one side of the heavy frame abuts against an anchorage device of the stay cable; the pull rods are arranged on the outer sides of the stay cables, and the two ends of the pull rods are connected between the lug plate sets correspondingly connected to the two sides of the stay cables correspondingly; the plurality of insertion lugs are respectively arranged at the joints of the plurality of pull rods and the lug plate group; and the multiple jacks are arranged on the pull rod in a sleeving mode, abut against one side of the heavy frame and provide tensioning force. The heavy frame is arranged on the stay cable and the pull rods in a penetrating mode to disperse weight, construction accuracy can be improved, the heavy frame is formed by splicing the force bearing units, the heavy frame is connected after the stay cable is installed, working efficiency is improved, the inserting lugs are arranged at the connecting positions of the pull rods, and connecting quality of the structure is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of steel structure design, and specifically refers to a tensioning fixture structure for double-ear plate inclined cables at steel structure nodes. Background Technology

[0002] In the construction of steel structures, the most critical process is to lift and prestress the stay cables in key areas, and the accuracy of this process directly affects whether the entire steel structure can meet the acceptance standards.

[0003] Currently, common construction methods typically employ flexible stranded cables to lift the support frame mounted on the cable body. This structure, due to the significant weight of the cable head, makes it extremely difficult to control its shape. During cable head installation, over-lifting is highly likely, potentially preventing cable installation. Furthermore, when multiple stranded cables are used, the long lifting distance can easily lead to tangling, severely hindering their effective use.

[0004] Tensioning stay cables is a major challenge, and the design of suitable tensioning fixtures is an urgent problem to solve for convenient and efficient tensioning of steel stay cables. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the prior art and provide a tensioning fixture structure for double-ear plate inclined cables at steel structure nodes, which solves the problems of excessive lifting due to the large weight of the cable head, which makes it impossible to install the cable and the multiple strands easily getting tangled.

[0006] The technical solution to achieve the above objective is: a tensioning fixture structure for a double-ear plate stay cable at a steel structure node, comprising: a support frame, which is inserted through the cable body of the stay cable, and one side of the support frame is abutted against the anchor of the stay cable; multiple tie rods, which are disposed on the outside of the stay cable, and the two ends of the tie rods are respectively connected to the ear plate groups connected on both sides of the stay cable; multiple inserts, which are respectively disposed at the connection points between the multiple tie rods and the ear plate groups; and multiple jacks, which are respectively sleeved on the tie rods, and the jacks abut against one side of the support frame, and the jacks provide tension force.

[0007] A further improvement of the tensioning fixture structure for double-ear plate inclined cables at steel structure nodes of this utility model is that the load-bearing frame includes two load-bearing units, which are spliced ​​together relative to each other.

[0008] A further improvement of the tensioning fixture structure for double-ear plate stay cables at steel structure nodes of this utility model is that two load-bearing units are spliced ​​together to form a first through hole, through which the stay cable passes.

[0009] A further improvement of this utility model to the tensioning fixture structure for double-ear plate inclined cables at steel structure nodes is that the tie rod is threaded through the load-bearing frame.

[0010] A further improvement of the tensioning fixture structure for double-ear plate inclined cables at steel structure nodes of this utility model is that the load-bearing frame is provided with a second through hole for the tie rod to pass through.

[0011] A further improvement of the tensioning fixture structure for double-ear plate inclined cables at steel structure nodes of this utility model is that the insert ear and the ear plate assembly are connected by a pin shaft.

[0012] A further improvement of the tensioning fixture structure for double-ear plate inclined cables at steel structure nodes of this utility model is that the ear plate group is provided with a corresponding tensioning hole group for the pin shaft to pass through.

[0013] A further improvement of the tensioning fixture structure for double-ear plate inclined cables at steel structure nodes of this utility model is that the ear plate group is connected to two groups of inclined cables; the tie rods set between the two groups of inclined cables are correspondingly passed through the two load-bearing frames.

[0014] In this utility model, a tensioning fixture structure for double-ear plate inclined cables at steel structure nodes is used. By distributing the weight through a support frame inserted through the inclined cables and tie rods, the construction accuracy can be improved. The support frame is formed by splicing support units and then connecting the support frames after the inclined cables are installed, which improves work efficiency. The insertion lugs at the connection points of the tie rods ensure the connection quality of the structure. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a tensioning fixture for a double-ear plate cable at a steel structure node according to the present invention.

[0016] Figure 2 This is a cross-sectional view of the load-bearing unit in the load-bearing frame of this utility model.

[0017] Figure 3 This is a cross-sectional view of the insert ear of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the first ear plate of this utility model.

[0019] In the diagram: 10. Support frame; 101. Support unit; 102. First perforation; 103. Second perforation; 11. Tie rod; 12. Insert ear; 121. Pin hole; 122. Slot; 123. Hole; 13. Jack; 14. Pin; 20. Steel structure frame; 21. First beam; 22. Second beam; 23. Support beam; 30. Stay cable; 31. Cable body; 32. Anchor; 33. Cable head; 40. Ear plate assembly; 41. First ear plate; 411. Third perforation; 412. Tensioning hole assembly; 42. Second ear plate. Specific Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] See Figure 1 This diagram shows a structural schematic of a tensioning fixture for a double-eared cable-stayed structure at a steel structure node according to the present invention. In this embodiment, the steel structure node is formed by a steel structure frame 20 consisting of two opposing first beams 21, two opposing second beams 22 connected between the two first beams 21, and a support beam 23 connected to the two first beams 21 and positioned between the two second beams 22.

[0022] The stay cable 30 is located at the junction of one end of the supporting beam 23 and the first beam 21, and at the junction of the two second beams 22 and the first beam 21, with a lug plate assembly 40 at the connection. The lug plate assembly 40 includes multiple first lug plates 41 and multiple second lug plates 42. The first lug plates 41 are connected to the junction of the supporting beam 23 and the first beam 21, and the second lug plates 42 are connected to the junction of the first beam 21 and the second beam 22 on the side closer to the supporting beam 23. The stay cable 30 includes two cable heads 33, a cable body 31, and an anchor 32. One end of the cable body is connected to the cable head 33, and the other end is connected to the anchor 32.

[0023] In this embodiment, two sets of first ear plates 41 are respectively provided between the ear plate groups 40 that are arranged opposite each other. Two third through holes 411 are respectively provided on both sides of the first ear plate 41. Two third through holes 411 are correspondingly provided on the second ear plate 42. The inclined cable 30 is connected between the oppositely arranged third through holes 411.

[0024] See Figure 1 This invention provides a structural schematic diagram of a tensioning fixture for a double-ear plate stay cable at a steel structure node, comprising: a support frame 10, which is inserted through the cable body 31 of the stay cable 30, and one side of the support frame 10 is abutted against the anchor 32 of the stay cable 30.

[0025] The support frame 10 is installed on the stay cable 30 near the supporting beam 23. The support frame 10 is formed by welding steel plates, and its size can be adjusted according to actual construction needs. The support frame 10 is designed with a convex structure, and one of its protruding sides is set to abut against the anchor 32 of the stay cable 30.

[0026] Multiple tie rods 11 are provided on the outside of the stay cable 30, and the two ends of the tie rods 11 are respectively connected to the ear plate groups 40 connected on both sides of the stay cable 30.

[0027] The tie rod 11 and the stay cable 30 are arranged parallel to each other. The length of each tie rod 11 is set according to the connection spacing between the ear plate assemblies 40, and no specific limit is imposed here.

[0028] In this embodiment, two tie rods 11 are provided on the outer side of each stay cable 30.

[0029] Multiple lugs 12 are respectively located at the connection points between multiple pull rods 11 and ear plate assembly 40.

[0030] The ear 12 is U-shaped, and its opening can be engaged with the outer edge of the ear plate assembly 40.

[0031] In this embodiment, the end of the lug 12 forms a slot 122, which engages with the end of the pull rod 11. The end of the lug 12 has a hole 123 for the pull rod 11 to pass through.

[0032] Multiple jacks 13 are respectively mounted on multiple tie rods 11. The jacks 13 abut against one side of the support frame 10 and provide tension force.

[0033] One end of the tie rod 11 passes through the support frame 10 and the jack 13 in sequence, and is fixed by bolts. The output end of the jack 13 pushes the support frame 10 in the opposite direction, causing the support frame 10 to push the cable head 33, which in turn moves the cable body 31 in the opposite direction, thus tensioning the stay cable 30. During tensioning, the tension should be applied in stages, in a three-stage tensioning procedure: pre-tensioning → 50% → 90% → 100% (over-tensioning by 5%).

[0034] See Figure 2 The diagram shows a cross-sectional view of the load-bearing unit in the load-bearing frame of this utility model. This utility model provides a tensioning fixture structure for double-ear plate inclined cables at steel structure nodes. The load-bearing frame 10 includes two load-bearing units 101, which are spliced ​​together relative to each other.

[0035] Two load-bearing units 101 are spliced ​​together from the upper and lower sides of the cable body 31 and fixed together by bolts, which optimizes the construction operation and reduces the weight impact caused by first installing the load-bearing frame 10. A detachable connection is set between the two load-bearing units 101, which can be recycled and reused, reducing costs.

[0036] See Figure 2 The image shows a cross-sectional view of the load-bearing unit in the load-bearing frame of this utility model. This utility model provides a tensioning fixture structure for double-ear plate inclined cables at steel structure nodes. Two load-bearing units 101 are spliced ​​together to form a first through hole 102, through which the inclined cable 30 passes.

[0037] The first perforation 102 is a circular hole, corresponding to the shape of the cable body 31, and the inner diameter of the first perforation 102 is larger than the diameter of the cable body 31.

[0038] See Figure 1 This diagram shows a structural schematic of a tensioning fixture for a double-ear plate stay cable at a steel structure node according to the present invention. The present invention provides a tensioning fixture for a double-ear plate stay cable at a steel structure node, with tie rods 11 passing through a support frame 10.

[0039] In this embodiment, two tie rods 11 are provided on the outer side of one of the inclined cables 30, and the two tie rods 11 are respectively inserted on both sides of the support frame 10.

[0040] See Figure 2 The diagram shows a cross-sectional view of the load-bearing unit in the load-bearing frame of this utility model. This utility model provides a tensioning fixture structure for double-ear plate inclined cables at steel structure nodes. The load-bearing frame 10 is provided with a second through hole 103 for the tie rod 11 to pass through.

[0041] The shape of the cross-section of the tie rod 11 can be either round or elliptical, which allows for better tolerance of errors during actual construction and avoids multiple disassembly and adjustment of the structure. The second through hole 103 is arranged parallel to the first through hole 102, and the two second through holes 103 are located on both sides of the first through hole 102, and are arranged symmetrically.

[0042] See Figure 1 This invention provides a structural schematic diagram of a tensioning fixture for a double-ear plate stay cable at a steel structure node, wherein the insert ear 12 is connected to the ear plate assembly 40 via a pin 14.

[0043] The ear 12 has a corresponding pin hole 121 at its open end for the pin 14 to pass through. The ear 12 and the pin 14 are connected to form a locking structure to connect the end of the pull rod 11 to the ear plate assembly 40.

[0044] See Figure 3 and Figure 4 , Figure 3 This shows a cross-sectional view of the insert ear of the present invention. Figure 4 The diagram shows the structure of the first ear plate of this utility model. This utility model provides a tensioning fixture structure for double ear plate stay cables at steel structure nodes, wherein the ear plate assembly 40 is provided with a corresponding tensioning hole assembly 412 for the pin shaft 14 to pass through.

[0045] The tensioning hole group 412 is correspondingly provided with the pin hole 121 at the open end of the lug 12.

[0046] See Figure 1 This invention provides a structural schematic diagram of a tensioning fixture for a double-ear plate stay cable at a steel structure node, wherein the ear plate group 40 is connected to two groups of stay cables 30.

[0047] Among them, the inclined cables 30 on the same side of the first ear plate 41 are adjacent and parallel. Since the corresponding support frames 10 on the two adjacent inclined cables 30 are staggered, the side of the two adjacent inclined cables 30 that are close to each other can share a tie rod 11.

[0048] The tie rods 11 installed between the two sets of stay cables 30 are respectively threaded through the two support frames 10.

[0049] Among them, the tie rods 11 between two adjacent stay cables 30 are successively inserted into two adjacent support frames 10, and two jacks 13 are set accordingly.

[0050] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A tensioning tooling structure for a double-ear plate stay cable at a steel structure joint, characterized by, include: A support frame is provided, which is installed on the cable body of the stay cable, and one side of the support frame is abutted against the anchor of the stay cable; Multiple tie rods are provided on the outside of the stay cable, and the two ends of the tie rods are respectively connected between the ear plates connected on both sides of the stay cable. Multiple lugs are provided at the connection points between the multiple pull rods and the ear plate assembly; Multiple jacks are respectively mounted on multiple tie rods, and the jacks abut against one side of the support frame, and the jacks provide tension force.

2. The tensioning tooling structure for the double-ear plate stay cables at the steel structure joint according to claim 1, characterized in that, The support frame includes two support units, which are spliced ​​together relative to each other.

3. The tensioning tooling structure for a double-plate stay cable at a steel structure joint according to claim 2, characterized in that, Two load-bearing units are joined together to form a first through hole, through which the stay cable passes.

4. The tensioning tooling structure for a double-plate stay cable at a steel structure joint according to claim 1, characterized in that, The tie rod is inserted through the load-bearing frame.

5. The tensioning tooling structure for the double-ear plate stay cables at the steel structure joint according to claim 4, characterized in that, The support frame is equipped with: A second perforation is provided for the pull rod to pass through.

6. The tensioning tooling structure for a double-plate stay cable at a steel structure joint according to claim 1, characterized in that, The insert ear and the ear plate assembly are connected by a pin.

7. The tensioning tooling structure for a double-plate stay cable at a steel structure joint according to claim 6, characterized in that, The ear plate assembly is provided with a corresponding tensioning hole assembly for the pin shaft to pass through.

8. The tensioning tooling structure for a double-plate stay cable at a steel structure joint according to claim 1, characterized in that, The ear plate group is connected to two sets of inclined cables; The tie rods installed between the two sets of stay cables are respectively threaded through two adjacent support frames.

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