Combined steel pipe-encased concrete type buckling-restrained brace member

A technology of anti-buckling bracing and combining steel pipes, which is used in building components, shock-proofing and other directions, can solve the problem of damage to the production cycle of special soft material boards without bonding material boards, high processing cost of in-line support cores, and inability to ensure low-cycle fatigue performance. and other problems, to achieve the effect of solving local damage and displacement of soft materials, easy control of finished product quality, and avoiding residual tensile stress

Inactive Publication Date: 2010-08-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem of the high processing cost of the inline support inner core in the existing anti-buckling support members, the inability to ensure its reliable low-cycle fatigue performance, and the displacement of the special soft ma

Method used

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  • Combined steel pipe-encased concrete type buckling-restrained brace member
  • Combined steel pipe-encased concrete type buckling-restrained brace member
  • Combined steel pipe-encased concrete type buckling-restrained brace member

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0008] Specific implementation mode one: as Figure 6-16 As shown, the anti-buckling support member of this embodiment includes an inline support inner core 6 and an outer restraint member 7, and the outer restraint member 7 is composed of two rectangular steel pipes 7-1, four channel steels 7-2, two second A backing plate 8 and two second backing plates 9 are formed, and the two ends of each rectangular steel pipe 7-1 are located on the pipe wall of the long side and each has a rectangular gap 7 along the height direction of the rectangular steel pipe 7-1. -4, two rectangular gaps 7-4 are arranged opposite each other, one side end face of each channel steel 7-2 is an inclined plane, and each channel steel 7-2 is fixed in the rectangular gap 7-4 by partial spot welding, the channel steel The maximum height of 7-2 is the same as the height of the rectangular gap 7-4, and the opening of each channel steel 7-2 faces the outside of the rectangular steel pipe 7-1, forming a gap bet...

specific Embodiment approach 2

[0010] Specific implementation mode two: as Figure 6As shown, each variable cross-section stiffener 6-2 in this embodiment is sequentially composed of a first support plate 6-2-1, a transition plate 6-2-2 and a connecting plate 6-2-3 and is integrated, The width and thickness of the connecting plate 6-2-3 match the groove depth and groove width of the channel steel 7-2, and the cross-sectional area of ​​the connecting plate 6-2-3 is smaller than that of the transition plate 6-2-2 Cross-sectional area, the cross-sectional area of ​​the transition plate 6-2-2 is smaller than the cross-sectional area of ​​the first support plate 6-2-1, the outer surface of the transition plate 6-2-2 is a slope, and the inner core is supported in a straight line 6 There is no need for non-bonding treatment on the surface, and there is no need to paste soft materials on the support inner core to reserve axial compression space. Other components and connections are the same as those in the first e...

specific Embodiment approach 3

[0011] Specific implementation mode three: as Figure 6-Figure 13 , Figures 17-19 As shown, the anti-buckling support member of this embodiment includes an inline support inner core 6 and an outer restraint member 7, and the outer restraint member 7 is composed of two rectangular steel pipes 7-1, four channel steels 7-2, two pieces of the first Three backing plates 10, many pairs of bolt seats 11 and a plurality of bolts 12 are formed, and each rectangular steel pipe 7-1 has two ends on the long-side pipe wall along the height direction of the rectangular steel pipe 7-1. Rectangular gap 7-4, two rectangular gaps 7-4 are arranged opposite each other, one side end face of each channel steel 7-2 is a slope, and each channel steel 7-2 is fixed in the rectangular gap 7-4 by partial spot welding , the maximum height of the channel steel 7-2 is the same as the height of the rectangular notch 7-4, the opening of each channel steel 7-2 faces the outside of the rectangular steel pipe ...

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Abstract

The invention relates to a buckling-restrained brace member, in particular to a combined steel pipe-encased concrete type buckling-restrained brace member. The invention solves the problems that the processing cost of the in-line brace inner core in the existing buckling-restrained brace member is high, the reliable low-cycle fatigue performance cannot be ensured, the cast-in-situ construction and the vibrating construction of mortar or concrete are apt to cause special soft material plates to be displaced and non-binder material plates to be locally damaged, and the production cycle is long. Technical scheme one: the in-line brace inner core and two first backing plates are clamped between two rectangular steel pipes filled with mortar or concrete blocks, each first backing plate is respectively and fixedly connected with outer walls which face to the two rectangular steel pipes and each backing plate is fixedly connected with an external restraining member; and technical scheme two: the in-line brace inner core and third backing plates are clamped between two rectangular steel pipes filled with mortar or concrete blocks, and the third backing plates are connected with pairs of bolt seats through a plurality of bolts. The combined steel pipe-encased concrete type buckling-restrained brace member can be used in the side force resisting component in the field of building structure engineering.

Description

technical field [0001] The invention relates to a buckling-resistant support member, in particular to a lateral force-resistant member (also an energy-dissipating shock-absorbing device) mainly used in the field of building structure engineering. Background technique [0002] The existing buckling-resistant bracing members with cast-in-place concrete-filled steel tubes as lateral restraints have the following deficiencies: (see Figure 4 and Figure 5 ), first of all, in order to allow the inline support core to be able to freely stretch, compress, stretch and deform inside the steel tube concrete, it is necessary to paste a soft material plate 3 on the end of the inline support core 1 stiffener plate 2 to reserve axial compression space, At the same time, in order to isolate the cohesive force between the surface of the inline support inner core and the concrete, it is also necessary to paint the non-adhesive material plate 4 on the surface of the support inner core; then, ...

Claims

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Application Information

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IPC IPC(8): E04B1/98
Inventor 赵俊贤吴斌梅洋
Owner HARBIN INST OF TECH
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