Adjustable steel structure building support

Abstract

The utility model provides an adjustable steel structure building support which comprises a supporting assembly which comprises a plurality of first supporting pieces arranged in the first direction perpendicular to the ground and second supporting pieces slidably connected with the first supporting pieces in the first direction in the second direction perpendicular to the first supporting pieces. One end of the clamping mechanism is connected with a clamping groove in any position of the first supporting piece in the first direction, and the other end of the clamping mechanism is fixedly connected with the second supporting piece; the device further comprises an adjusting piece, the adjusting piece is connected with the first supporting piece in an attached mode, clamping groove structures are arranged on the adjusting piece in the first direction, the clamping mechanism is matched with any clamping groove structure in the first direction, and the clamping mechanism drives the second supporting piece and the first supporting piece to change in the connecting position in the first direction. The problem that the height of the support needs to be continuously changed in the building process is solved through the structure.

Description

Technical Field

[0001] The present application relates to the field of steel structure buildings, and in particular to an adjustable steel structure building support. Background Art

[0002] In the field of construction, steel structure supports are widely used in various construction projects, such as high-rise buildings, long-span bridges, etc. These supports provide the necessary support for the building structure to ensure construction safety and structural stability. However, the existing building steel structure supports have certain limitations and shortcomings when dealing with the problem of constantly changing the support height during the construction process.

[0003] In order to solve the problem of constantly adjusting the height of the support during the construction process, existing technical solutions mainly focus on designing a support structure with adjustable height. For example, a support with adjustable height is provided with a plurality of retractable support rods, and the length of the support rods is adjusted as needed to achieve the change of the support height.

[0004] However, the existing adjustable height steel structure building bracket still has some defects. Some support rods may affect the stability of the structure during adjustment. Therefore, a steel structure building bracket that can solve the problem of constantly changing the height of the bracket during construction is needed. Utility Model Content

[0005] In view of this, it is necessary to provide an adjustable steel structure building support that can solve the problem of constantly changing the height of the support during the construction process to solve the above problems.

[0006] An embodiment of the present application provides an adjustable steel structure building support, comprising:

[0007] A support assembly, comprising a plurality of first support members arranged along a first direction perpendicular to the ground and a second support member slidably connected to the first support member along a second direction perpendicular to the first support member;

[0008] A clamping mechanism, one end of which is connected to a clamping slot of the first supporting member at any position in the first direction, and the other end of which is fixedly connected to the second supporting member;

[0009] An adjusting member, wherein the adjusting member is closely connected to the first supporting member, wherein the adjusting member has a slot structure arranged along the first direction, and through the cooperation of any slot structure along the first direction, the clamping mechanism drives the second supporting member to change the connection position with the first supporting member in the first direction.

[0010] In at least one embodiment of the present application, the clamping mechanism comprises:

[0011] A clamping cover, fixedly connected to the second support member;

[0012] A clamping member has one end connected to the clamping cover and is located at one end of the clamping cover that is attached to the first supporting member.

[0013] In at least one embodiment of the present application, the clamping member includes a clamping portion, and the clamping portion abuts against any one of the slot structures arranged in the first direction to adjust the connection position between the clamping mechanism and the first support member in the first direction.

[0014] In at least one embodiment of the present application, the clamping portion and the clamping slot structure include two connection states, wherein:

[0015] The clamping portion abuts against the clamping slot structure to be in a clamping state;

[0016] The clamping portion and the clamping slot structure are not in contact with each other in an adjustment state.

[0017] In at least one embodiment of the present application, the clamping member further includes a telescopic portion, one end of the telescopic portion is connected to the clamping portion, and the other end of the telescopic portion is connected to the clamping cover to adjust the connection state between the clamping portion and the clamping slot.

[0018] In at least one embodiment of the present application, the clamping member further includes a spring, and the spring is sleeved on the telescopic portion to drive the telescopic portion to perform telescopic movement.

[0019] In at least one embodiment of the present application, the clamping member also includes a pressing sliding portion, which is connected to the telescopic portion and is located at an end of the clamping cover away from the clamping member, and the user presses the pressing sliding portion along the second direction to switch the connection state.

[0020] In at least one embodiment of the present application, the clamping cover includes a sliding hole, the pressing sliding portion passes through the sliding hole and is connected to the telescopic portion, and the pressing sliding portion slides along the sliding hole in the second direction.

[0021] In at least one embodiment of the present application, the first support member and the second support member are respectively connected to the clamping mechanism to be directly opposite to the clamping cover.

[0022] In at least one embodiment of the present application, the first support member is an H-shaped steel structure.

[0023] The adjustable steel structure building support provided above changes the connection position of the clamping mechanism by adjusting the slot structure of the adjusting member. The adjustment of the slot structure causes the position of the clamping mechanism to change in the first direction, thereby driving the second support member to slide relative to the first support member. This solves the problem of constantly changing the height of the support during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of the adjustable steel structure building support described in the present application;

[0025] Figure 2 A front cross-sectional view of the adjustable steel structure building support described in the present application;

[0026] Figure 3 A three-dimensional diagram of the clamping mechanism described in this application;

[0027] Figure 4 For the purpose of this application Figure 2 A partial enlarged view of AA.

[0028] Main component symbols

[0029] 100. An adjustable steel structure building support; 10. Support assembly; 11. First support member; 12. Second support member; 20. Clamping mechanism; 30. Adjusting member; 21. Clamping member; 22. Clamping cover; 211. Clamping part; 212. Telescopic part; 213. Spring; 214. Pressing sliding part; 221. Sliding hole; 40. First direction; 50. Second direction. DETAILED DESCRIPTION

[0030] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0031] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0032] An embodiment of the present application provides an adjustable steel structure building support, including a support assembly, including a plurality of first support members arranged along a first direction perpendicular to the ground and a second support member slidably connected to the first support member along a second direction perpendicular to the first support member; it also includes a clamping mechanism, one end of which is connected to the first support member by a slot at any position in the first direction, and the other end is fixedly connected to the second support member; it also includes an adjusting member, which is fitted and connected to the first support member, and the adjusting member has a slot structure arranged along the first direction, and through the cooperation of any slot structure along the first direction, the clamping mechanism drives the second support member to change the connection position with the first support member in the first direction.

[0033] The adjustable steel structure building support provided above changes the connection position of the clamping mechanism by adjusting the slot structure of the adjusting member. The adjustment of the slot structure causes the position of the clamping mechanism to change in the first direction, thereby driving the second support member to slide relative to the first support member. This solves the problem of constantly changing the height of the support during the construction process.

[0034] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] See also Figure 1-Figure 4 The embodiment of the present application provides an adjustable steel structure building support 100, including a support assembly 10, the support assembly 10 includes a plurality of first support members 11 arranged along a first direction 40 perpendicular to the ground and a second support member 12 slidably connected to the first support member 11 along a second direction 50 perpendicular to the first support member 11 along the first direction 40; it also includes a clamping mechanism 20, one end of which is connected to the first support member 11 by a slot at any position in the first direction 40, and the other end is fixedly connected to the second support member 12; it also includes an adjusting member 30, the adjusting member 30 is closely connected to the first support member 11, the adjusting member 30 has a slot structure arranged along the first direction 40, and through the cooperation of any slot structure along the first direction 40, the clamping mechanism 20 drives the second support member 12 to change the connection position with the first support member 11 in the first direction 40. Specifically,

[0036] Further, the support assembly 10 includes a first support member 11 and a second support member 12. The first support member 11 is arranged in a direction perpendicular to the ground. They provide the main support structure for the building. The second support member 12 is slidably connected to the first support member 11 in a first direction 40. This means that they can move along the direction of the first support member 11, increasing the flexibility of the bracket.

[0037] Furthermore, the clamping mechanism 20 connects the first support member 11 and the second support member 12 to ensure that both are fixed at a specific position. It has a clamping groove connection, so that the first support member 11 can be fixed at any position in the first direction 40.

[0038] Furthermore, the adjusting member 30 is tightly connected to the first support member 11. It is provided with slot structures arranged in the first direction 40, and these slot structures cooperate with the clamping mechanism 20 so that the position of the second support member 12 can change with the movement of the first support member 11. Due to the sliding connection between the first support member 11 and the second support member 12, the length and angle of the bracket can be adjusted as needed, which increases the flexibility of application. Through the clamping mechanism 20, the bracket can ensure sufficient stability under various working conditions. The design of the adjusting member 30 makes it simple to adjust the length of the bracket without complicated tools or steps.

[0039] Furthermore, according to the height requirement of the bracket, the user can adjust the length of the first support member 11 by sliding the second support member 12 to match the length of the first support member 11. When the length of the first support member 11 is determined, the clamping mechanism 20 will be connected and fixed with the clamping slot of the first support member 11. Through the clamping mechanism 20, the length of the second support member 12 will also be adjusted and fixed accordingly. The function of the adjustment member 30 is to provide a simple method to adjust the distance between the two support members to meet different application requirements.

[0040] In summary, this adjustable steel building bracket is very useful in various construction projects, especially in situations where fast and flexible setup and adaptability to different terrains and structures are required. For example: temporary buildings, stage structures, photo studios, exhibition stands, etc. Due to its high adjustability and stability, this bracket is also often used for outdoor shooting, temporary exhibitions and large-scale event structure construction.

[0041] In a specific implementation example, the clamping mechanism 20 includes: a clamping cover 22 and a clamping member 21. The clamping cover 22 is fixedly connected to the second support member 12; one end of the clamping member 21 is connected to the clamping cover 22 and is located at one end of the clamping cover 22 that is attached to the first support member 11.

[0042] Specifically, the clamping cover 22 is fixedly connected to the second support member 12, providing a stable structural foundation for the clamping mechanism 20. By being fixedly connected to the second support member 12, the clamping cover 22 ensures the stability of the bracket and can effectively transmit and fix the force of the clamping mechanism 20.

[0043] Furthermore, one end of the clamping member 21 is connected to the clamping cover 22, and the other end is in contact with the first support member 11, which plays a role in fixing and adjusting the position of the first support member 11. The design of the clamping member 21 simplifies the adjustment process of the bracket and ensures that the first support member 11 is fixed at the required position.

[0044] Furthermore, when the length or angle of the bracket needs to be adjusted, the user can slide the first support member 11. When the first support member 11 reaches the desired position, the clamping member 21 starts to work. One end of it is connected to the clamping cover 22, and the other end is in contact with the first support member 11. By rotating or pressing the clamping member 21 (the specific method depends on the design), the connection between the clamping cover 22 and the first support member 11 is strengthened, thereby fixing the first support member 11 in the desired position. Due to the action of the clamping mechanism 20, the length or position of the second support member 12 will also be fixed accordingly, consistent with the first support member 11.

[0045] In a specific implementation example, the clamping member 21 includes a clamping portion 211 , and the clamping portion 211 abuts against any of the slot structures arranged in the first direction 40 to adjust the connection position between the clamping mechanism 20 and the first support member 11 in the first direction 40 .

[0046] Specifically, the clamping member 21 is a part of the clamping mechanism 20, and plays a role in fixing and adjusting the position of the first support member 11. Through the clamping member 21, the first support member 11 can be quickly and stably fixed to ensure the overall stability of the bracket.

[0047] Furthermore, the clamping portion 211 is a part of the clamping member 21 and abuts against the slot structure to adjust the connection position between the clamping mechanism 20 and the first support member 11. By adjusting the abutment degree between the clamping portion 211 and the slot structure, the position of the first support member 11 can be accurately controlled to meet different application requirements.

[0048] Furthermore, when the length or angle of the bracket needs to be adjusted, the user can slide the first support member 11. When the first support member 11 reaches the desired position, the clamping member 21 begins to function. A specific portion of the clamping portion 211 abuts against the slot structure arranged in the first direction 40, which can fine-tune the connection position between the clamping mechanism 20 and the first support member 11. By adjusting the abutment degree between the clamping portion 211 and the slot structure, the user can accurately control the position of the first support member 11 to ensure that the bracket meets specific length or angle requirements. When the clamping portion 211 is completely abutted against the slot structure, the connection between the clamping mechanism 20 and the first support member 11 reaches the optimal state, ensuring the stability of the bracket.

[0049] In a specific implementation example, the clamping portion 211 and the slot structure include two connection states, wherein the clamping portion 211 and the slot structure are in contact with each other in a clamping state; and the clamping portion 211 and the slot structure are not in contact with each other in an adjustment state.

[0050] Specifically, there are two connection states between the clamping portion 211 and the clamping slot structure. Through these two connection states, the connection position between the clamping mechanism 20 and the first support member 11 can be accurately controlled to meet different application requirements.

[0051] Furthermore, in the clamping state, the clamping mechanism 20 can provide stable support and fixing effects to ensure the stability of the bracket; in the adjustment state, the user can fine-tune the length or angle of the bracket as needed to achieve fast and flexible adjustment.

[0052] Furthermore, when the user needs to fix the bracket, they can abut the clamping portion 211 against the corresponding clamping slot structure to put the clamping mechanism 20 into a "clamping state". In this state, the clamping mechanism 20 will firmly fix the first support member 11 to ensure the stability and safety of the bracket.

[0053] Furthermore, if the user needs to fine-tune the length or angle of the bracket, they can remove the clamping portion 211 from the slot structure, so that the clamping mechanism 20 enters the "adjustment state". In this state, the user can adjust the length or angle of the bracket by sliding the first support member 11, while the clamping mechanism 20 remains connected to the second support member 12. When the user completes the adjustment, they can again abut the clamping portion 211 against the corresponding slot structure, so that the clamping mechanism 20 returns to the "clamping state" to ensure the stability of the bracket.

[0054] In a specific implementation example, the clamping member 21 further includes a telescopic portion 212, one end of the telescopic portion 212 is connected to the clamping portion 211, and the other end is connected to the clamping cover 22 to adjust the connection state between the clamping portion 211 and the clamping slot.

[0055] Specifically, the user can adjust the connection state between the clamping portion 211 and the slot structure through the telescopic portion 212, thereby achieving precise control of the length of the bracket. The telescopic portion 212 provides a simple and effective method for the user to quickly and accurately adjust the length of the bracket to meet different application requirements.

[0056] Furthermore, when the user needs to adjust the length of the bracket, they can apply force by pressing the sliding portion 214. Pressing the sliding portion 214 will cause the spring 213 to contract, thereby driving the telescopic portion 212 to perform a telescopic movement. As the telescopic portion 212 is extended and retracted, the connection state between the clamping portion 211 and the slot structure will change. When the telescopic portion 212 is extended, the connection between the clamping portion 211 and the slot structure becomes tighter, making the bracket more stable; when the telescopic portion 212 is shortened, the connection between the clamping portion 211 and the slot structure becomes loose, reducing the length of the bracket. In this way, the user can adjust the length of the bracket according to actual needs to adapt it to different environments and structural requirements.

[0057] In a specific implementation example, the clamping member 21 further includes a spring 213 , and the spring 213 is sleeved on the telescopic portion 212 to drive the telescopic portion 212 to perform telescopic movement.

[0058] Specifically, the main function of the spring 213 is to provide elastic force to enable the telescopic portion 212 to perform telescopic movement. When the user applies pressure, the spring 213 will contract, driving the telescopic portion 212 to telescope, thereby changing the connection state between the clamping portion 211 and the clamping slot structure.

[0059] Furthermore, the use of the spring 213 increases the flexibility and adaptability of the bracket. Through the telescopic movement of the spring 213, the user can easily adjust the length of the bracket to meet different application requirements. At the same time, the elasticity of the spring 213 also enables the bracket to have a certain buffering effect when subjected to external force, thereby improving the stability and safety of the bracket.

[0060] Furthermore, when the user presses the pressing sliding portion 214 along the second direction 50, the pressing sliding portion 214 will drive the spring 213 to be compressed through the telescopic portion 212. As the spring 213 is compressed, the telescopic portion 212 will perform a telescopic movement, thereby changing the connection state between the clamping portion 211 and the slot structure. When the user releases the pressing sliding portion 214, the spring 213 will release its elastic force, so that the telescopic portion 212 returns to its original position. In this way, the user can quickly and accurately adjust the connection state between the clamping portion 211 and the slot structure by pressing the cooperation of the sliding portion 214 and the spring 213.

[0061] In a specific implementation example, the clamping member 21 also includes a pressing sliding portion 214, which is connected to the telescopic portion 212 and is located at one end of the clamping cover 22 away from the clamping member 21, and the user presses the pressing sliding portion 214 along the second direction 50 to switch the connection state.

[0062] Specifically, the pressing sliding part 214 is a component for the user to interact with the bracket. By pressing the sliding part 214, the user can control the connection state between the clamping part 211 and the clamping slot structure to adjust the length of the bracket.

[0063] Furthermore, the push-slide portion 214 provides a simple and intuitive method for the user to adjust the length of the bracket. Through a simple pressing action, the user can quickly and accurately control the length of the bracket to meet different application requirements. In addition, the design of the push-slide portion 214 also increases the aesthetics of the bracket and the comfort of use.

[0064] Furthermore, when the user needs to adjust the length of the bracket, they can press the pressing sliding portion 214 along the second direction 50. The pressing sliding portion 214 is connected to the clamping portion 211 through the telescopic portion 212. When the pressing sliding portion 214 is subjected to pressure, the telescopic portion 212 will perform a telescopic movement, thereby changing the connection state between the clamping portion 211 and the slot structure.

[0065] Furthermore, when the user releases the pressure on the sliding portion 214, the telescopic portion 212 returns to its original position, and the connection between the clamping portion 211 and the slot structure stabilizes. By repeatedly pressing and releasing the sliding portion 214, the user can continuously adjust the length of the bracket to adapt it to different application scenarios.

[0066] In a specific implementation example, the clamping cover 22 includes a sliding hole 221 , the pressing sliding portion 214 passes through the sliding hole 221 and is connected to the telescopic portion 212 , and the pressing sliding portion 214 slides along the sliding hole 221 in the second direction 50 .

[0067] Specifically, the sliding hole 221 is an opening on the clamping cover 22 , which is used to accommodate the pressing sliding portion 214 and allow it to slide in the second direction 50 .

[0068] Furthermore, the design of the sliding hole 221 simplifies the structure of the clamping cover 22, making it easier to process and assemble. At the same time, the sliding hole 221 provides a smooth sliding path for pressing the sliding portion 214, so that the user can easily adjust the length of the bracket by pressing the sliding portion 214.

[0069] Furthermore, when the user needs to adjust the length of the bracket, they can press the pressing sliding portion 214 along the second direction 50. The pressing sliding portion 214 is connected to the clamping portion 211 through the telescopic portion 212. When the pressing sliding portion 214 is subjected to pressure, the telescopic portion 212 will perform a telescopic movement, thereby changing the connection state between the clamping portion 211 and the slot structure.

[0070] Furthermore, since the pressing sliding portion 214 passes through the sliding hole 221 on the clamping cover 22, when the user presses the pressing sliding portion 214 along the second direction 50, the pressing sliding portion 214 will slide in the sliding hole 221 along the second direction 50. By repeatedly pressing and releasing the pressing sliding portion 214, the user can continuously adjust the length of the bracket to adapt it to different application scenarios.

[0071] In a specific implementation example, the first support member 11 and the second support member 12 are respectively connected to the clamping mechanism 20 to be directly opposite to the clamping cover 22 .

[0072] Specifically, it is ensured that the connection positions of the clamping mechanism 20 and the first support member 11 and the second support member 12 are directly opposite to each other, thereby maintaining a stable connection during the adjustment process.

[0073] Furthermore, the design of the clamping cover 22 facing each other ensures that the clamping mechanism 20 always maintains a stable connection with the first and second support members 12 during the adjustment process, thereby avoiding the bracket from shaking or becoming unstable due to unstable connection. In addition, this design also helps to improve the overall strength and stability of the bracket.

[0074] Furthermore, when the user needs to adjust the length of the bracket, they can change the connection position between the clamping mechanism 20 and the first and second support members 12 by pressing the sliding portion 214. Since the first support member 11 and the second support member 12 are respectively connected to the clamping mechanism 20 opposite to the clamping cover 22, it can be ensured that the clamping mechanism 20 always maintains a stable connection with the first and second support members 12 during the adjustment process. Through repeated adjustments, the user can accurately adjust the length of the bracket to meet the needs of actual applications.

[0075] In a specific implementation example, the first support member 11 is an H-shaped steel structure.

[0076] Specifically, the H-shaped steel structure is a commonly used building structure with high bearing capacity and stability. As the first support member 11, it can provide the main support force of the bracket to ensure the stability and safety of the bracket in various application scenarios.

[0077] Furthermore, using H-shaped steel as the first support member 11 can greatly improve the overall strength and stability of the bracket, so that it can withstand greater loads and external forces. In addition, H-shaped steel also has good fatigue resistance and corrosion resistance, which can ensure the stable performance of the bracket during long-term use.

[0078] Furthermore, when the bracket is subjected to external pressure or load, the characteristics of the H-shaped steel structure enable it to effectively disperse and transmit force, ensuring the overall stability of the bracket. At the same time, due to the special shape of the H-shaped steel, it also has good anti-twisting and anti-bending capabilities, further enhancing the stability of the bracket.

[0079] Thus, the adjustable steel structure building support 100 provided above changes the connection position of the clamping mechanism 20 by adjusting the slot structure of the adjusting member 30. The adjustment of the slot structure causes the position of the clamping mechanism 20 to change in the first direction 40, thereby driving the second support member 12 to slide relative to the first support member 11. This solves the problem of constantly changing the height of the support during the construction process.

[0080] The above is only an implementation method of the present application. It should be pointed out that a person skilled in the art can make improvements without departing from the creative concept of the present application, but these improvements are within the scope of protection of the present application.

Claims

1. An adjustable steel structure building support, characterized in that: include: A support assembly includes a plurality of first support members arranged along a first direction perpendicular to the ground and a second support member slidably connected to the first support member along a second direction perpendicular to the first support member; A clamping mechanism, one end of which is connected to a clamping slot of the first supporting member at any position in the first direction, and the other end of which is fixedly connected to the second supporting member; An adjusting member, wherein the adjusting member is closely connected to the first supporting member, wherein the adjusting member has a slot structure arranged along the first direction, and through the cooperation of any slot structure along the first direction, the clamping mechanism drives the second supporting member to change the connection position with the first supporting member in the first direction.

2. The adjustable steel structure building support according to claim 1, characterized in that: The clamping mechanism comprises: A clamping cover, fixedly connected to the second support member; A clamping member has one end connected to the clamping cover and is located at one end of the clamping cover that is attached to the first supporting member.

3. The adjustable steel structure building support according to claim 2, characterized in that: The clamping member includes a clamping portion, and the clamping portion abuts against any one of the clamping slot structures arranged in the first direction to adjust the connection position between the clamping mechanism and the first supporting member in the first direction.

4. The adjustable steel structure building support according to claim 3, characterized in that: The clamping portion and the clamping slot structure include two connection states, wherein: The clamping portion abuts against the clamping slot structure to be in a clamping state; The clamping portion and the clamping slot structure are not in contact with each other in an adjustment state.

5. The adjustable steel structure building support according to claim 4, characterized in that: The clamping member further comprises a telescopic portion, one end of which is connected to the clamping portion, and the other end of which is connected to the clamping cover, so as to adjust the connection state between the clamping portion and the clamping slot.

6. The adjustable steel structure building support according to claim 5, characterized in that: The clamping member also includes a spring, and the spring is sleeved on the telescopic part to drive the telescopic part to perform telescopic movement.

7. The adjustable steel structure building support according to claim 6, characterized in that: The clamping member further comprises a pressing sliding portion, which is connected to the telescopic portion and is located at an end of the clamping cover away from the clamping member, and a user presses the pressing sliding portion along a second direction to switch the connection state.

8. The adjustable steel structure building support according to claim 7, characterized in that: The clamping cover comprises a sliding hole, the pressing sliding part passes through the sliding hole and is connected with the telescopic part, and the pressing sliding part slides along the sliding hole in the second direction.

9. The adjustable steel structure building support according to claim 2, characterized in that: The first support member and the second support member are respectively connected to the clamping mechanism to be directly opposite to the clamping cover.

10. The adjustable steel structure building support according to claim 1, characterized in that: The first support member is an H-shaped steel structure.

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