Buckling restraint bracing structure

Abstract

The embodiment of the present invention provides an anti-buckling restraint support structure, including a core material and a restraint member coated on the outside of the core material, and also including a transition connector and a connecting ear plate, wherein the core material is a steel rod with a circular cross section, the outer surface of the core material end is provided with a thread, a stepped blind hole with a two-stage structure is opened along the axial direction at the center of the first end face of the transition connector, a thread matching the thread on the outer surface of the core material end is provided on the inner surface of the inner section of the stepped blind hole, and an adhesive material is filled between the outer section of the stepped blind hole and the core material after the transition connector is threadedly connected to the core material, and the connecting ear plate is provided on the transition connector. The solution provided by the embodiment of the present invention adopts a steel rod with a circular cross section as the core material, which can reduce material loss and processing cost; the transition connector and the core material adopt a composite connection structure of threads and adhesive materials, which can play a transition and connection role for the core material end, and the mechanical properties are stable and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorption, and in particular to an anti-buckling restraint support structure. Background Art

[0002] Earthquakes are extremely destructive and are one of the major natural disasters that threaten human life and property safety. In order to improve the ability of engineering structures to resist earthquake disasters, protect people's lives and reduce people's property losses, taking effective shock reduction measures is an important development direction in the field of engineering structure disaster prevention and mitigation.

[0003] One of the effective measures to improve the ability of engineering structures to resist earthquake disasters is to set up energy-absorbing elements in the structure to absorb and dissipate the earthquake input energy, thereby reducing the earthquake damage to the main structure and ensuring the safety of the structure.

[0004] As a new type of energy-absorbing element, the buckling-resistance restrained brace structure is typically composed of a core material that dissipates seismic energy and a restraining member that provides restraint and support for the core material. There is no bonding between the core material and the restraining member to ensure that the two work separately, and the core material bears the axial force alone and effectively dissipates energy.

[0005] In the related art, the core material is generally made of steel plates or steel sections through cutting, welding and other processes. In order to give full play to the energy consumption performance of the core material and avoid the adverse effects of mechanical processing on the fatigue performance of the core material, it is necessary to use subtractive processing techniques such as cutting, shaving and cutting to increase the cross-sectional transition section at both ends of the core material. However, a large amount of processing waste will be generated in the processing and manufacturing process, which is not conducive to cost control. Summary of the invention

[0006] In view of the above problems, an embodiment of the present invention provides an anti-buckling restraint support structure.

[0007] One aspect of the present invention provides an anti-buckling constraint support structure, including a core material and a constraint member coated on the outside of the core material, and also including a transition connector and a connecting ear plate, wherein the core material is a steel rod with a circular cross-section, the outer surface of the core material end is provided with a thread, a two-stage stepped blind hole is opened along the axial direction at the center of the first end face of the transition connector, a thread matching the thread on the outer surface of the core material end is provided on the inner surface of the inner section of the stepped blind hole, after the transition connector is threadedly connected to the core material, an adhesive material is filled between the outer section of the stepped blind hole and the core material, and the connecting ear plate is provided on the transition connector.

[0008] Compared with the prior art, the beneficial effects of the present invention are: using a steel rod with a circular cross section as the core material to replace steel plates or steel sections can reduce material loss and processing costs caused by cutting and other processing links; the transition connector and the core material adopt a composite connection structure of threads and adhesive materials. During the overall force-bearing process, due to the bonding of the filled adhesive material and its own deformation, the force inside the core material will have a gradual decrease process. When the force is transmitted to the starting point of the threaded connection of the rear section of the transition connector, the force on the core material here is reduced to an acceptable range, and the stress concentration is not obvious. This new force transmission method for anti-buckling energy dissipation support has higher fatigue resistance than pure threaded connection or welding, and the mechanical properties are stable and reliable; in addition, after the anti-buckling restraint support experiences the reciprocating action of an earthquake, the adhesive material will suffer a certain degree of cumulative damage or even failure. At this time, applying a certain force to loosen the thread can separate the core material and the transition connector for easy disassembly and replacement.

[0009] Optionally, the cross-section of the transition connector is circular, and a thread is provided on the outer side surface of the second end of the transition connector. The connecting ear plate includes a support and a connecting ring fixed on the support. A threaded hole is opened along the axial direction on the side of the support different from the connecting ring, and the support is threadedly connected to the transition connector.

[0010] Optionally, the cross-section of the transition connector is rectangular, the connecting ear plate includes a wing plate and a web plate, one side of the web plate is fixed to the middle of the wing plate to form a T-shaped structure, and a connecting ear plate is fixed on each side of the transition connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute a limitation of the present invention. In the drawings:

[0012] Figure 1 A schematic structural diagram of a buckling-restrained support structure provided by an embodiment of the present invention;

[0013] Figure 2 A schematic structural diagram of a transition connector provided by an embodiment of the present invention;

[0014] Figure 3 A schematic structural diagram of a first transition ear plate provided in an embodiment of the present invention;

[0015] Figure 4 A schematic structural diagram of a second transition ear plate provided in an embodiment of the present invention.

[0016] Among them, there are core material 1, restraining member 2, transition connector 3, connecting ear plate 4, stepped blind hole 5, bonding material 6, support 7, connecting ring 8, wing plate 9, and web 10. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0018] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 An anti-buckling restraint support structure provided by an embodiment of the present invention includes a core material 1 and a restraint member 2 coated on the outside of the core material 1, and also includes a transition connector 3 and a connecting ear plate 4, wherein the core material 1 is a steel rod with a circular cross-section, and a thread is arranged on the outer surface of the end of the core material 1. A two-stage structure stepped blind hole 5 is opened at the center of the first end face of the transition connector 3 along the axial direction, and a thread matching the thread on the outer surface of the end of the core material 1 is arranged on the inner surface of the inner section of the stepped blind hole 5. After the transition connector 3 is threadedly connected to the core material 1, an adhesive material 6 is filled between the outer section of the stepped blind hole 5 and the core material, and the connecting ear plate 4 is arranged on the transition connector 3.

[0019] In implementation, the restraining member 2 can be a hollow structure filled with concrete, cement mortar or other similar materials such as high-strength grouting materials; the restraining member 2 can also be a round steel pipe with an inner diameter 1-3mm larger than that of the steel rod and a certain thickness. This implementation method does not require internal filling; the restraining member 2 provides a restraining force perpendicular to the axis of the core material 1 to ensure the stability and energy absorption capacity of the core material 1 when subjected to axial force; the core material 1 is made of round steel or steel bars.

[0020] The adhesive material 6 can improve the bonding ability between the transition connector 3 and the core material 1, and reduce the stress at the threaded connection, thereby improving the fatigue resistance of the connection. The adhesive material can be made of cement-based high-strength grouting materials, rebar glue and other materials; the length of the outer section needs to be determined according to the fatigue resistance of the connection, and its length should be able to ensure that when the support is subjected to the design load, the stress of the core material at the junction of the outer section and the inner section is not greater than the limit stress that meets the fatigue performance specified by the support product.

[0021] In one implementation, the cross-section of the transition connector 3 is circular, the outer side surface of the second end of the transition connector 3 is provided with a thread, the connecting ear plate 4 includes a support 7 and a connecting ring 8 fixed on the support 7, and a threaded hole is opened along the axial direction on the side of the support 7 different from the connecting ring 8, and the support 7 is threadedly connected to the transition connector 3; in implementation, the support and the connecting ring can adopt an integral casting structure.

[0022] In another implementation, the cross-section of the transition connector 3 is rectangular, the connecting ear plate 4 includes a wing plate 9 and a web 10, one side of the web 10 is fixed to the middle of the wing plate 9 to form a T-shaped structure, and a connecting ear plate 4 is fixed on each side of the transition connector 3. In implementation, a fixing hole is opened on the web 10 for fixing to the engineering structure.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A buckling restraint support structure, comprising a core material and a restraining member wrapped around the outside of the core material, characterized in that: It also includes a transition connector and a connecting ear plate, wherein the core material is a steel rod with a circular cross section, the outer surface of the core material end is provided with a thread, a stepped blind hole with a two-stage structure is opened in the center of the first end surface of the transition connector along the axial direction, a thread matching the thread on the outer surface of the core material end is provided on the inner surface of the inner section of the stepped blind hole, and a bonding material is filled between the outer section of the stepped blind hole and the core material after the transition connector is threadedly connected to the core material, and the connecting ear plate is provided on the transition connector; The cross section of the transition connector is circular, the outer side surface of the second end of the transition connector is provided with a thread, the connecting ear plate includes a support and a connecting ring fixed on the support, a threaded hole is opened along the axial direction on the side of the support different from the connecting ring, and the support is threadedly connected to the transition connector; The restraining member is a hollow structure filled with concrete, cement mortar or high-strength grouting material; the bonding material is cement-based high-strength grouting material or rebar embedding glue.

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