A construction tool and construction method for a fully fixed swing column capable of unidirectional controllable swing
By designing a construction tool including four position limiters, using components such as fixing brackets, adjustment bolts and sliding layers to achieve full fixation and one-way controllable swing of the swing column, the problem of difficult to achieve state switching and meet boundary conditions in the prior art is solved, and the flexibility and accuracy of construction are improved.
Patent Information
- Application Number
- CN202111492926.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-12-08
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2041-12-08
AI Technical Summary
The existing steel structure construction methods are difficult to achieve flexible switching between the swing columns between fully fixed and one-way controllable swing states, and it is difficult to meet the boundary conditions of construction analysis, and the operation is cumbersome and there is a risk of structural instability.
A construction tool including four position limiters is designed, and the full fixation and one-way controllable swing of the swing column are achieved through components such as fixing brackets, adjustment bolts and sliding layers. The limiter can flexibly control the swing direction and amplitude of the swing column by tightening and loosening the adjusting bolts.
It realizes flexible switching between the fully fixed and one-way controllable swing states of swing columns, improves flexibility and operation convenience during construction, accurately meets the boundary conditions of construction simulation analysis, and ensures the safety of the structure and construction accuracy.
Smart Images
Figure CN115492307B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of steel structure construction, and in particular to a construction tool and a construction method in which a swing column is completely fixed and can swing in a unidirectional controllable manner. Background Art
[0002] The swing column is a typical structural column. The column cannot remain stable by itself and needs to rely on the stiffness of other parts of the structural system to remain stable. It only bears axial force. Therefore, certain measures need to be taken during the construction process to keep the swing column stable during installation. During the construction of some large stadium steel structures, the swing column needs to be temporarily used as a supporting column. At this time, it needs to be fixed. However, during the lifting and unloading of the steel roof, the swing column needs to swing in a unidirectional controllable manner to adapt to the needs of the structure. This means that during the construction process, the swing column needs to switch between a completely fixed state and a unidirectional controllable swing state.
[0003] Nowadays, most steel structure swing columns are constructed by using rigid diagonal braces or fixing them with steel wire ropes around them. For example, the construction method of the swing column of Ji'an Culture and Art Center introduced in the book "New Technology and Application of Large Complex Steel Structure Construction Engineering" is to fix the scaffolding steel pipes and steel wire ropes on the already erected stable scaffolding or concrete beams. This method can firmly fix the swing column and meet the project requirements.
[0004] However, the above existing construction methods all use rigid components with non-adjustable lengths, or set flexible materials such as steel wire ropes around the swing column in pairs, making it difficult for the swing column to adjust its position according to the needs of the main structure during the restriction process, and it is difficult to meet the boundary conditions of the design analysis. In addition, it is necessary to set embedded parts and other connectors in the existing concrete or steel structure, which makes it less adaptable. If the swing position of the swing column needs to be adjusted, it is necessary to adjust the length of the rigid diagonal brace through traditional methods such as cutting and welding, or by replacing steel wire ropes of different lengths. These methods are cumbersome and there is a risk of structural instability during the cutting and replacement process. Summary of the invention
[0005] In view of the technical problems in the above-mentioned construction process that the swing column cannot be switched between a completely fixed state and a one-way controllable swing state, and the swing column cannot be adapted to the boundary conditions of the construction analysis, the purpose of the present invention is to propose a construction tool and construction method in which the swing column is completely fixed and can be controlled to swing in one direction, which can greatly improve the flexibility of the swing column during construction and the convenience of operation, and accurately meet the boundary conditions of the construction simulation analysis.
[0006] To achieve the above object, the technical solution of the present invention is:
[0007] A construction tool with a fully fixed swing column and controllable unidirectional swing, comprising:
[0008] Four limiters are symmetrically arranged in pairs around the swing column in the mounting hole of the existing structure, and the limiters include:
[0009] The fixed bracket is U-shaped and consists of a top plate, a bottom plate and a connecting plate connecting one end of the top plate and the bottom plate. The length of the top plate is greater than that of the bottom plate. The upper and lower supporting plates are respectively vertically arranged on the top surface of the top plate and the bottom surface of the bottom plate. Bolt holes are respectively arranged on the upper and lower supporting plates. The fixed bracket is inserted into the mounting hole and fixed to the existing structure.
[0010] At least two adjusting bolts and fixing nuts thereon are respectively arranged in the bolt holes on the upper and lower support plates of the fixing bracket, and the fixing nuts are located on the inner side or the outer side of the upper and lower support plates;
[0011] The upper and lower pressing plates are respectively fixed to the front ends of the adjusting bolts on the upper and lower supporting plates, and a sliding layer is arranged on the outer sides of the upper and lower pressing plates which are opposite to the outer walls of the swing columns.
[0012] Preferably, the fixing bracket is a steel plate, a channel steel, a hot-rolled H-shaped steel or a welded H-shaped steel.
[0013] Preferably, the upper and lower pressing plates are of a multi-layer structure, which include a substrate and a slip layer in sequence.
[0014] Preferably, the upper and lower pressure plates are of a multi-layer structure, which sequentially include a substrate, a sliding layer and a front pressure plate. Preferably, the contact surface between the front pressure plate and the outer wall of the rocking column is an arc surface.
[0015] Preferably, an anti-falling plate is protruded from the upper portion of the back side of the front pressure plate along the width direction and can extend above the base plate.
[0016] Preferably, the sliding layers on the upper and lower pressing plates include polytetrafluoroethylene (PTFE), lubricating oil, grease, stainless steel plate or engineering plastics with a low friction coefficient.
[0017] Preferably, the fixing bracket is clamped on the existing structure.
[0018] Preferably, the existing structure includes a concrete floor slab or a steel frame beam.
[0019] Preferably, the adjusting bolt is a screw or bolt with threaded threads. Preferably, the side of the adjusting bolt is marked with a scale for real-time observation of the position deflection of the rocking column.
[0020] Preferably, a protective layer is provided in the area on the upper and lower pressure plates that contacts the outer wall of the rocking column, and the protective layer is preferably a rubber pad or a steel plate.
[0021] In the construction tooling of the present invention:
[0022] The limiters described in the present invention are located at the circumferential positions of the swing column and are arranged symmetrically in pairs, limiting its swing in all directions when the swing column is fully fixed; when the swing column is unidirectionally controllably fixed, a sliding layer such as PTFE can be set on the inner sides of the upper pressure plate and the lower pressure plate to ensure that the swing of the swing column in one direction is not constrained by the limiter.
[0023] The four limiters described in the present invention are symmetrically arranged at the circumferential position of the swing column, and their purpose is to limit the swing column from swinging in one direction when it is fully fixed; when the swing column is controllably swinging in one direction, the length of the tightening of the adjusting bolt on the limiter can be adjusted to ensure that the swing column is not constrained in one direction, but is restricted in the direction perpendicular to the swing. Under the premise of structural safety, the adjusting bolt and the pressure plate of the limiter in the swing direction of the swing column can also be removed to ensure that the swing column is not constrained in one direction, but the limiter perpendicular to the swing direction of the swing column must be in a tightened state.
[0024] The upper and lower pressing plates of the present invention are designed as a multi-layer structure, wherein the sliding layer can reduce the friction between the substrate and the front pressing plate, so that the substrate and the front pressing plate can slide relative to each other more easily.
[0025] In addition, in the multi-layer structure design of the upper and lower pressure plates, the setting of the front pressure plate is related to the shape of the rocking column. If the surface of the rocking column is an arc or other non-planar shape, a front pressure plate needs to be set to adapt to the surface shape of the rocking column. If the surface of the rocking column is a plane, no front pressure plate is required.
[0026] When the surface of the swing column is non-planar, the inner side of the bottom pressure plate is in contact with the swing column, and the outer side remains flat. If the surface of the swing column is painted or has other easily damaged surface coatings, a rubber pad can also be filled between the pressure plate and the swing column to play a protective role.
[0027] The construction method of the construction tooling with a fixed swing column and controllable unidirectional swing according to the present invention comprises the following operations:
[0028] a) Completely fixed operation
[0029] The four limiters are symmetrically arranged in pairs around the swing column in the mounting hole of the existing structure; when the swing column is adjusted to the required position, the adjusting bolts of the four limiters are tightened so that the upper pressing plate and the lower pressing plate are respectively pressed against the swing column, and the adjusting bolts are locked to the upper and lower supporting plates of the fixed bracket with fixing nuts, so that the swing column is completely fixed;
[0030] b) One-way controllable swing operation
[0031] 1) Check the four limiters to ensure that all parts of each limiter are intact, and that the adjusting bolts and the upper and lower pressure plates are tight against the circumference of the swing column, and the swing column is in a completely fixed state;
[0032] 2) Determine the swing direction of the swing column;
[0033] 3) Loosen the adjusting bolt on a limiter on one side of the swing column in the swing direction, and keep the adjusting bolt on a limiter on the other side of the swing column opposite to the swing direction in a tightened state. At the same time, the adjusting bolts on the other two limiters of the swing column perpendicular to the swing direction are always kept in a tightened state, and the sliding layers on the upper and lower pressure plates on the two limiters cooperate with the swing column to swing in one direction;
[0034] 4) Repeat step 3), the swing column performs unidirectional swinging in a controllable state until the swing column swings to the target position, and the two side surfaces of the swing column perpendicular to the swing direction are always kept in a tight state by the other two opposite limiters.
[0035] Preferably, the adjusting bolt is provided with scale marks; when the swing column is adjusted in one direction, the adjustment amount of the swing column can be grasped in real time by observing the scale marks.
[0036] The present invention can freely select the fixing and swinging of the swing column in various directions according to needs.
[0037] Compared with other traditional swing column fixing methods, the present invention has the following beneficial effects:
[0038] The present invention can flexibly control the boundary conditions of the swing column by arranging four limiters in four circumferential directions of the swing column, that is, switch between a fully fixed state or a unidirectional controllable swing state.
[0039] The present invention can accurately adjust the fixed position of the swing column and the displacement required for swinging through the cooperation of the adjusting bolts of the four limiters, greatly improving the accuracy of structural construction and ensuring that the structure after construction complies with the force system and force concept of the structural design.
[0040] The construction tooling of the present invention adopts a bolt connection design, and does not require cutting, welding or material replacement during the entire use process. The operation is convenient and flexible, ensuring that the swing column is consistent with the boundary conditions of the construction analysis during the construction process, thereby ensuring the safety of the structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0041] Figure 1 It is a top view of an embodiment of the construction tooling of the present invention.
[0042] Figure 2 It is a side view of an embodiment of a limiter in the construction tooling of the present invention.
[0043] Figure 3It is a side view of an embodiment of the construction tooling of the present invention. DETAILED DESCRIPTION
[0044] See also Figure 1 to Figure 3 The construction tooling with a fully fixed swing column and controllable unidirectional swing according to the present invention comprises:
[0045] Four stoppers 10, 10', 20, 20' are symmetrically arranged in pairs on the circumference of the swing column 200 in the mounting hole 201 of the existing structure 100. The stopper 10 (taking the stopper 10 as an example) includes:
[0046] The fixing bracket 1 is U-shaped and consists of a top plate 11, a bottom plate 12 and a connecting plate 13 connecting one side of the top plate 11 and the bottom plate 12. The length of the top plate 11 is greater than that of the bottom plate 12. An upper supporting plate 14 and a lower supporting plate 15 are vertically arranged on the top surface of the top plate 11 and the bottom surface of the bottom plate 12, respectively. Bolt holes are arranged on the upper and lower supporting plates 14 and 15 respectively. The fixing bracket 1 is inserted into the mounting hole 201 and fixed to the existing structure 100.
[0047] At least two adjusting bolts 2, 2' and fixing nuts 3, 3' thereon are respectively arranged in the bolt holes on the upper and lower support plates 14, 15 of the fixing bracket 1, and the fixing nuts 3, 3' are located on the inner side or the outer side of the upper and lower support plates 14, 15;
[0048] The upper pressing plate 4 and the lower pressing plate 4' are respectively fixed to the front ends of the adjusting bolts 2 and 2' on the upper and lower supporting plates 14 and 15. Sliding layers 41 and 41' are arranged on the outer surfaces of the upper and lower pressing plates 4 and 4' opposite to the outer wall of the swing column 200.
[0049] Preferably, the fixing bracket 1 is a steel plate, a channel steel, a hot-rolled H-shaped steel or a welded H-shaped steel.
[0050] Preferably, the upper and lower pressing plates are of a multi-layer structure, and the upper pressing plate 4 (taking the upper pressing plate 4 as an example, the same below) comprises a substrate 42 and a slip layer 41 in sequence.
[0051] Preferably, the upper and lower pressure plates 4, 4' are multi-layer structures, and the upper pressure plate 4 (taking the upper pressure plate 4 as an example, the same below) includes a substrate 42, a sliding layer 41 and a front pressure plate 43 in sequence. Preferably, the contact surface between the front pressure plate 43 and the outer wall of the rocking column 200 is an arc surface.
[0052] Preferably, an anti-falling plate 44 is protruded from the upper back side of the front pressure plate 43 along the width direction and can extend to above the base plate 42 .
[0053] Preferably, the sliding layer 41 on the upper and lower pressing plates 4, 4' comprises polytetrafluoroethylene PTFE, lubricating oil, grease, stainless steel plate or engineering plastic with a low friction coefficient.
[0054] Preferably, the fixing bracket 1 is clamped on the existing structure 100 .
[0055] Preferably, the existing structure 100 includes a concrete floor or a steel frame beam.
[0056] Preferably, the adjusting bolt is a screw or bolt with threaded threads. Preferably, the side of the adjusting bolt is marked with a scale for real-time observation of the position deflection of the rocking column.
[0057] Preferably, a protective layer 45 is provided in the area of the upper pressure plate 4 that contacts the outer wall of the swing column 200 , and the protective layer 45 is preferably a rubber pad or a steel plate.
[0058] See also Figure 1 The tooling of the present invention is mainly operated during use to fully fix the swing column and unidirectionally controllable swing, and the specific operations include:
[0059] a) Completely fixed operation
[0060] The four limiters 10, 10', 20, 20' are symmetrically arranged in pairs around the swing column 200 in the mounting hole of the existing structure 100; when the swing column is adjusted to the desired position, the adjustment bolts of the four limiters 10, 10', 20, 20' are tightened so that the upper pressure plate and the lower pressure plate are respectively pressed against the swing column 200, and the adjustment bolts are locked to the upper and lower support plates of the fixed bracket with fixing nuts, so that the swing column 200 is completely fixed;
[0061] b) One-way controllable swing operation
[0062] 1) Check the four limiters 10, 10', 20, 20' to ensure that the components of each limiter are intact, and that the adjusting bolts and the upper and lower pressure plates are all tightened against the circumference of the swing column 200, and the swing column 200 is in a completely fixed state;
[0063] 2) Determine the swing direction of the swing column 200;
[0064] 3) Loosen the adjustment bolt on a limiter 10 on one side of the swing column 200 in the swing direction, and keep the adjustment bolt on a limiter 10' on the other side of the swing column 200 in the opposite swing direction in a tightened state. At the same time, the adjustment bolts on the other two limiters 20, 20' of the swing column 200 perpendicular to the swing direction are always kept in a tightened state, and the sliding layers on the upper and lower pressure plates on the two limiters cooperate with the swing column 200 to swing in one direction;
[0065] 4) Repeat step 3), the swing column 200 swings unidirectionally in a controllable state until the swing column swings to the target position, and the two side surfaces of the swing column 200 perpendicular to the swing direction are always kept in a tight state by the other two opposite limiters 10, 10', 20, 20'.
Claims
1. A construction tool with a fully fixed swing column and unidirectional controllable swing, characterized in that: include: Four limiters are symmetrically arranged in pairs around the swing column in the mounting hole of the existing structure, and the limiters include: The fixed bracket is U-shaped and consists of a top plate, a bottom plate and a connecting plate connecting one end of the top plate and the bottom plate. The length of the top plate is greater than that of the bottom plate. The upper and lower supporting plates are respectively vertically arranged on the top surface of the top plate and the bottom surface of the bottom plate. Bolt holes are respectively arranged on the upper and lower supporting plates. The fixed bracket is inserted into the mounting hole and fixed to the existing structure. At least two adjusting bolts and fixing nuts thereon are respectively arranged in the bolt holes on the upper and lower support plates of the fixing bracket, and the fixing nuts are located on the inner side or the outer side of the upper and lower support plates; The upper and lower pressing plates are respectively fixed to the front ends of the adjusting bolts on the upper and lower supporting plates, and a sliding layer is arranged on the outer sides of the upper and lower pressing plates which are opposite to the outer walls of the swing columns.
2. The construction tooling with a fully fixed swing column and unidirectional controllable swing as claimed in claim 1 is characterized in that: The fixing bracket is a steel plate, a channel steel, a hot-rolled H-shaped steel or a welded H-shaped steel.
3. The construction tooling with a fully fixed swing column and unidirectional controllable swing as claimed in claim 1 is characterized in that: The upper and lower pressing plates are multi-layer structures, which include a substrate and a sliding layer in sequence.
4. The construction tooling with a fully fixed swing column and unidirectional controllable swing as claimed in claim 1 is characterized in that: The upper and lower pressing plates are multi-layer structures, which sequentially include a substrate, a sliding layer and a front pressing plate.
5. The construction tooling with a fully fixed swing column and unidirectional controllable swing as claimed in claim 4 is characterized in that: The contact surface between the front pressure plate and the outer wall of the rocking column is an arc surface.
6. The construction tooling with a fully fixed swing column and unidirectional controllable swing as claimed in claim 4 or 5, characterized in that: An anti-falling plate which can extend to above the base plate is protruded on the upper part of the back side of the front pressure plate along the width direction.
7. The construction tool with a fully fixed swing column and unidirectional controllable swing as claimed in claim 1, 3 or 4, characterized in that: The sliding layers on the upper and lower pressing plates include polytetrafluoroethylene (PTFE), lubricating oil, grease, stainless steel plates or engineering plastics with a low friction coefficient.
8. The construction tool with a fully fixed swing column and unidirectional controllable swing as claimed in claim 1, 3, 4 or 5, characterized in that: A protective layer is provided on the areas of the upper and lower pressing plates that are in contact with the outer wall of the swing column.
9. The construction tooling with a fully fixed swing column and unidirectional controllable swing as claimed in claim 8, characterized in that: The protective layer is a rubber pad or a steel plate.
10. The construction tooling with a fully fixed swing column and unidirectional controllable swing as claimed in claim 1 or 2, characterized in that: The fixing bracket is clamped on the existing structure.
11. The construction tooling with a fully fixed swing column and unidirectional controllable swing as claimed in claim 1, characterized in that: The existing structure includes a concrete floor or a steel structure frame beam.
12. The construction tooling with a fully fixed swing column and unidirectional controllable swing as claimed in claim 1, characterized in that: The adjusting bolt is a screw rod or a bolt with threaded teeth.
13. The construction tooling with a fully fixed swing column and controllable unidirectional swing as claimed in claim 12, characterized in that: The side of the adjusting bolt is marked with scales for real-time observation of the position deflection of the rocking column.
14. The construction method of the construction tooling with a fully fixed swing column and controllable unidirectional swing as claimed in claim 1, characterized in that it comprises: Do as follows: a) Completely fixed operation The four limiters are symmetrically arranged in pairs around the swing column in the mounting hole of the existing structure; when the swing column is adjusted to the required position, the adjusting bolts of the four limiters are tightened so that the upper pressing plate and the lower pressing plate are respectively pressed against the swing column, and the adjusting bolts are locked to the upper and lower supporting plates of the fixed bracket with fixing nuts, so that the swing column is completely fixed; b) One-way controllable swing operation 1) Check the four limiters to ensure that all parts of each limiter are intact, and that the adjusting bolts and the upper and lower pressure plates are tight against the circumference of the swing column, and the swing column is in a completely fixed state; 2) Determine the swing direction of the swing column; 3) Loosen the adjusting bolt on the limiter on one side of the swing column in the swing direction, and keep the adjusting bolt on the limiter on the other side of the swing column in the opposite swing direction tight. At the same time, the adjusting bolts on the other two limiters of the swing column perpendicular to the swing direction are always kept tightened, and the sliding layers on the upper and lower pressure plates on the two limiters cooperate with the swing column to swing in one direction; 4) Repeat step 3), the swing column performs unidirectional swinging in a controllable state until the swing column swings to the target position, and the two side surfaces of the swing column perpendicular to the swing direction are always kept in a tight state by the other two opposite limiters.
15. The construction method of the construction tooling with a fully fixed swing column and unidirectional controllable swing as claimed in claim 14, characterized in that: The side of the adjusting bolt is marked with scales for real-time observation of the position deflection of the rocking column.
Citation Information
Patent Citations
Construction tool with swing column fully fixed and capable of swinging controllably in one direction
CN216865709U