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CN-121976685-A - Assembled steel construction column base anti-seismic reinforcement device

CN121976685ACN 121976685 ACN121976685 ACN 121976685ACN-121976685-A

Abstract

The invention provides an assembled steel structure column foot anti-seismic reinforcing device, which relates to the technical field of steel structures and comprises a steel column, wherein an upper side column foot sole plate is welded on the bottom end surface of the steel column, and a lower side column foot sole plate consistent with the structural size of the upper side column foot sole plate is arranged below the upper side column foot sole plate; the rubber anti-seismic cushion pad further buffers the shock impact force through compression rebound deformation, and meanwhile, the shock amplitude is attenuated by means of the high damping characteristic of rubber materials, so that the structural resonance risk is effectively reduced, the impact caused by medium-high strength earthquake can be better resisted, and the problems that the conventional assembled steel structure column foot is insufficient in anti-seismic buffering performance, weak in shearing and limiting capacity and inconvenient in structural state monitoring are solved.

Inventors

  • Zhang wanji
  • ZHANG JIA

Assignees

  • 长春恒发房地产开发有限公司

Dates

Publication Date
20260505
Application Date
20260202

Claims (8)

  1. 1. The anti-seismic reinforcing device for the assembled steel structure column foot comprises a steel column (1), an upper column foot sole plate (101) is welded on the bottom end surface of the steel column (1), stiffening ribs (102) distributed in an annular array shape are welded between the top end surface of the upper column foot sole plate (101) and the side end surface of the steel column (1), anchor bolt insertion holes penetrating through the bottom end surface of the upper column foot sole plate (101) are formed in an annular array shape, the anti-seismic reinforcing device is characterized in that a buffer compensation opening a (104) penetrating through the bottom end surface of the upper column foot sole plate (101) is formed in the position, adjacent to the corner position of four edges, of the top end surface of the upper column foot sole plate (101), a lower column foot sole plate (2) consistent with the structural size of the upper column foot sole plate is arranged below the upper column foot sole plate (101), a limit plug pillar (202) is fixedly mounted between the top end surface of the lower column foot sole plate (2) adjacent to the corner position of the four edges, the diameter of the limit plug pillar foot sole plate (202) is smaller than that of the buffer compensation opening a (104), the limit plug pillar (202) is in sliding plug-in fit with the buffer compensation opening a (104), and the shear key (204) is fixedly mounted on the bottom end surface (204).
  2. 2. The anti-seismic reinforcing device for the assembled steel structure column base of claim 1, wherein a rubber buffer compensation sleeve (103) is fixedly adhered to the inner peripheral surface of the buffer compensation opening a (104), the inner diameter of the rubber buffer compensation sleeve (103) is consistent with the diameter of a limiting inserting column (202), and the limiting inserting column (202) is slidably inserted into the inner peripheral surface of the rubber buffer compensation sleeve (103).
  3. 3. The shock-resistant reinforcing device for the assembled steel structure column base according to claim 2, wherein a rubber shock-resistant buffer pad (4) is arranged between the upper column base plate (101) and the lower column base plate (2), a buffer compensation opening b (402) penetrating through the bottom end face of the rubber shock-resistant buffer pad (4) is formed in the position, adjacent to the included angle of four edges, of the top end face of the buffer shock-resistant buffer pad, the diameter of the buffer compensation opening b (402) is consistent with that of the limit plug (202), and the limit plug (202) is inserted through the buffer compensation opening b (402) in a sliding mode.
  4. 4. The assembled steel structure column foot anti-seismic reinforcing device according to claim 3 is characterized in that anchor bolt matching jacks a (205) penetrating through the bottom end face of the lower column foot bottom plate (2) are formed in an annular array mode on the top end face of the lower column foot bottom plate, the anchor bolt matching jacks a (205) correspond to the anchor bolt jacks in position, anchor bolt matching jacks b (401) penetrating through the bottom end face of the rubber anti-seismic buffer (4) are formed in an annular array mode on the top end face of the rubber anti-seismic buffer, the anchor bolt matching jacks b (401) correspond to the anchor bolt jacks in position, and anchor bolts (3) are installed among the anchor bolt jacks, the anchor bolt matching jacks b (401) and the anchor bolt matching jacks a (205).
  5. 5. The shock-resistant reinforcing device for the assembled steel structure column foot according to claim 4, wherein the included angle parts of the four edges of the upper column foot bottom plate (101), the lower column foot bottom plate (2) and the rubber shock-resistant cushion pad (4) are rounded.
  6. 6. The anti-seismic reinforcing device for the assembled steel structure column base according to claim 5, wherein a hanging rod (203) is fixedly installed in the middle of the side end faces of the lower column base plate (2), monitoring observation pieces (5) are sleeved on the four hanging rods (203), the monitoring observation pieces (5) are of cylindrical structures, the top end faces of the monitoring observation pieces (5) and the top end face of the upper column base plate (101) are in the same horizontal plane, the outer peripheral face of the monitoring observation pieces (5) is not in contact with the side end face of the lower column base plate (2), and the distance between the monitoring observation pieces is one half of the thickness of a rubber buffer compensation sleeve (103).
  7. 7. The shock-resistant reinforcing device for the assembled steel structure column base of claim 6, wherein the monitoring and observing piece (5) is made of glass, an inner hollow structure is adopted, a color developing solution (501) is filled in a hollow cavity of the monitoring and observing piece (5), and the color developing solution (501) is red liquid.
  8. 8. The anti-seismic reinforcing device for the assembled steel structure column base of claim 7, wherein the shear-resistant auxiliary piece (201) is fixedly arranged at the position, adjacent to the included angles of four edges, of the bottom end surface of the lower column base bottom plate (2), and the shear-resistant auxiliary piece (201) is of a cross-shaped steel structure.

Description

Assembled steel construction column base anti-seismic reinforcement device Technical Field The invention relates to the technical field of steel structures, in particular to an assembled steel structure column base anti-seismic reinforcing device. Background In the field of building engineering, the steel structure is widely applied to various buildings such as industrial plants, high-rise buildings, large-span space structures and the like by virtue of the advantages of high strength, light dead weight, short construction period, large potential of anti-seismic performance and the like. The column base is used as a key node for connecting the steel structure and the foundation, is a core pivot for transmitting the load of the upper structure to the foundation, and the earthquake resistance directly determines the safety and stability of the whole steel structure building under the earthquake action. Once the column base is destroyed in an earthquake, the whole structure is easily unstable and collapses, and serious life and property losses are caused, so that the earthquake-resistant reinforcement design of the column base is always an important research direction in the field of steel structure engineering. However, the existing fabricated steel structure column base still has a plurality of technical defects to be solved in practical application: the earthquake-resistant buffering performance is insufficient, the traditional column base is designed by adopting rigid connection or a single buffering structure, and the adaptability to multidimensional vibration response generated by earthquake is poor. Under the action of horizontal and vertical composite vibration loads, vibration energy is difficult to effectively absorb and attenuate, stress concentration at the joint of column feet is easy to cause, and then structural damage such as anchor bolt fracture and bottom plate deformation is caused, so that the earthquake-resistant design requirements of a middle-high-strength earthquake area cannot be met. The column base has weak shearing resistance and limiting capacity, namely the column base needs to bear larger horizontal shearing force under the action of an earthquake, the shearing resistance components of the existing column base are mostly in a single form, the shearing resistance range is limited, shearing stress is easy to concentrate in a local area, so that the column base is subjected to shearing damage, meanwhile, an effective limiting constraint structure is lacking, the steel column is easy to generate excessive horizontal deflection during the earthquake, so that the column base is loose in connection and unstable in structure, and the damage risk is further aggravated. The existing column foot reinforcing device lacks an intuitive and efficient state monitoring mechanism, displacement and damage conditions of column feet are required to be checked one by one through professional detection equipment after an earthquake, the detection flow is complex, the cost is high, the efficiency is low, whether potential safety hazards exist in the structure or not is difficult to judge rapidly, overhaul and maintenance work is not facilitated to be carried out in time, and the accumulation of the potential hazards easily causes the influence on the long-term use safety of the structure. Disclosure of Invention The invention relates to an anti-seismic reinforcing device for an assembled steel structure column base, which solves the problems of insufficient anti-seismic buffer performance, weak shearing resistance and limiting capacity and inconvenient structural state monitoring of the existing assembled steel structure column base. The invention provides an assembled steel structure column foot anti-seismic reinforcing device which specifically comprises a steel column, wherein an upper column foot bottom plate is welded on the bottom end surface of the steel column, stiffening ribs distributed in an annular array shape are welded between the top end surface of the upper column foot plate and the side end surface of the steel column, anchor bolt insertion holes penetrating through the bottom end surface of the upper column foot plate are formed in an annular array shape on the top end surface of the upper column foot plate, buffer compensation holes a penetrating through the bottom end surface of the upper column foot plate are formed in positions, adjacent to four edge included angles, of the top end surface of the upper column foot plate, a lower column foot bottom plate consistent with the structural size of the upper column foot plate is arranged below the upper column foot plate, a limiting insert column is fixedly arranged on positions, adjacent to four edge included angles, of the top end surface of the lower column foot plate, of the limiting insert column is smaller than the diameter of the buffer compensation holes a in a sliding insertion fit mode, a shear key is fixedly arranged on the cen