CN102912897A - Partitioned buckling-restrained opening energy dissipation steel plate wall - Google Patents

Abstract

The invention discloses a partitioned anti-buckling perforated energy-dissipating steel plate wall of a building structure. Inner filling steel plates, steel plate stiffeners, steel columns and steel beams, inner filling steel plates are fixed in steel columns and steel beams through angle steel and bolts, and steel plate stiffeners are set in the inner filling steel plates in a cross shape; the inner filling steel plates are evenly divided into Four rectangular areas; each area is divided into two triangular areas by one of the diagonal lines, the area inside the diagonal line is set as the non-arranged hole area, and the other areas are equipped with internal holes, which are distributed in a right triangle and filled in In the entire area of the steel plate, the two diagonals are set as non-arranged internal hole areas, the internal holes in the two triangular areas are vertically aligned, and the number of holes in each vertical row is equal. The invention has relatively large vertical stiffness and horizontal stiffness, improves the seismic performance of the steel plate shear wall, realizes the combination of the steel plate shear wall and the energy dissipator, and has high bearing capacity under earthquake action and lateral stiffness A series of superior characteristics such as large size and strong energy consumption.

Description

Partitioned buckling-resistant opening energy-dissipating steel plate wall

technical field

The invention relates to an energy-dissipating steel plate wall of a building structure, in particular to a partitioned anti-buckling perforated energy-dissipating steel plate wall of a building structure.

Background technique

Earthquake disasters are sudden and devastating, which seriously threaten the safety of human life and property. Nearly a thousand destructive earthquakes occur every year in the world, and a major earthquake can cause hundreds of billions of dollars in economic losses, resulting in hundreds of thousands of deaths or serious injuries. my country is located in the two most active seismic belts in the world, and is one of the countries that suffered the most serious earthquake disasters. The casualties caused by the earthquake rank first in the world, and the economic loss is also very huge. The massive destruction and collapse of buildings in earthquakes is the direct cause of earthquake disasters. When an earthquake occurs, ground vibrations cause the seismic response of the structure. For a building structure whose foundation is fixed to the ground, its response is amplified layer by layer along the height from bottom to top. Due to the excessive seismic response (acceleration, velocity or displacement) of a certain part of the structure, the main load-bearing structure is seriously damaged or even collapsed; loss; or damage to indoor expensive instruments and equipment leading to serious losses or secondary disasters. In order to avoid the occurrence of the above-mentioned disasters, people must control the seismic response of the structural system and eliminate the "amplifier" effect of the structural system.

The steel plate shear wall structure is a new type of lateral force-resisting structural system developed in the 1970s. The steel plate shear wall is composed of embedded steel plates, vertical edge members (columns) and horizontal edge members (beams). , the embedded steel plate is equivalent to the beam web, and the horizontal edge member can be approximately equivalent to the transverse stiffener. Embedded steel plates can be constructed without stiffeners or with stiffeners. Unstiffened steel plate shear walls can make full use of the post-buckling strength of steel plates under strong earthquakes, and have good ductility and energy dissipation capacity. The stiffened steel plate shear wall can limit the out-of-plane buckling of the steel plate, thereby improving the buckling capacity of the structure, helping to enhance the lateral stiffness of the structure under the action of wind and small earthquakes, and facilitating construction. Compared with the traditional steel frame or steel frame plus concrete shear wall structure system, the steel plate shear wall structure has the advantages of thin thickness, light weight, fast construction speed and good ductility. The existing research results and engineering examples show that the steel plate shear wall is a very potential lateral force resistance system, especially suitable for high-rise buildings and seismic reinforcement in high-intensity earthquake fortification areas. In the past few decades, scholars from various countries have conducted many experimental and theoretical studies on this structure. These studies have all come to a common conclusion: the structure has high elastic initial stiffness, large displacement ductility coefficient, and stable hysteretic performance.

The research on steel plate shear walls started relatively late in my country. The calculation of steel plate walls in Appendix IV of "Technical Specifications for Steel Structures in High-Rise Civil Buildings" considers that steel plate wall structures can only bear horizontal loads, and the shear elastic buckling strength is used as the design limit of steel plate walls. state, the problem of buckling of the steel plate wall under axial load is not considered. Especially at present, some energy-dissipating steel plate walls are prone to buckling, and some energy-dissipating steel plate walls have relatively concentrated plastic distribution, which is not conducive to energy consumption, and these need to be better resolved.

Contents of the invention

The present invention aims at the above-mentioned existing technical problems, and provides a kind of energy-dissipating effect of partitioned anti-buckling opening energy-dissipating steel plate wall, which can reduce the seismic response of the building structure and play a good role in protecting the building structure. Holes can effectively solve the problem of plastic distribution concentration and improve the energy dissipation capacity of the structure.

In order to achieve the above object, the technical solution of the present invention to solve technical problems is:

Partitioned anti-buckling opening energy-dissipating steel plate wall, including: inner filling steel plates, steel plate stiffeners, steel columns and steel beams, inner filling steel plates are fixed in steel columns and steel beams by angle steel and bolts, and the inner filling steel plates Steel plate stiffeners are set in a font shape; the inner filling steel plate is evenly divided into four rectangular areas; each area is divided into two triangular areas by one of the diagonal lines, and the area inside the diagonal line is set as the non-arrangement hole area, and the other areas are The internal holes are arranged and distributed in a right-angled triangle. In the entire area of the filled steel plate, the two diagonals are set as non-arranged internal hole areas, and the internal holes in the two triangular areas are vertically aligned. Each vertical row The number of holes is equal.

The internal holes are elliptical, and the major axes of the internal holes are vertically arranged.

The steel plate stiffeners are fixed on the inner filler steel plates through bolts, nuts and steel backing plates. the

The steel column and the steel beam are connected with the inner filling steel plate by bolts.

Compared with the prior art, the present invention has the following advantages and effects:

The zone-type anti-buckling opening energy-dissipating steel plate wall of the present invention has relatively large vertical stiffness and horizontal stiffness, improves the seismic performance of the steel plate shear wall, realizes the integration of the steel plate shear wall and the energy dissipator into one, and can be widely used Applied to energy dissipation and shock absorption of steel structures and reinforced concrete structures. It has a series of superior characteristics such as high bearing capacity under earthquake action, high lateral rigidity, and strong energy dissipation capacity.

Description of drawings

Fig. 1 is a schematic structural view of the partitioned anti-buckling perforated energy-dissipating steel plate wall of the present invention;

Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1 of the present invention;

Parts in the figure: inner filling steel plate 1, steel plate stiffener 2, inner hole 3, steel column 4, steel beam 5.

Detailed ways

The present invention will be further described in detail below in conjunction with specific examples, but the protection scope of the present invention is not limited by the specific examples, and the claims shall prevail. In addition, on the premise of not violating the technical solution of the present invention, any modification or change made to the present invention that can be easily realized by those skilled in the art will fall within the scope of the claims of the present invention.

Example 1:

As shown in Figures 1 and 2, the partitioned anti-buckling perforated energy-dissipating steel plate wall of the present invention includes: inner filling steel plate 1, steel plate stiffener 2, steel column 4 and steel beam 5, and inner filling steel plate 1 is fixed by angle steel and bolts In the steel column 4 and the steel beam 5, determine the size of the inner filling steel plate 1 and the steel plate stiffener 2 according to the actual engineering; determine the position and size of the inner elliptical inner hole 3 respectively. The inner filling steel plate 1 is provided with steel plate stiffeners 2 in a cross shape; the inner filling steel plate 1 is evenly divided into four rectangular areas; each area is divided into two triangular areas by one of the diagonal lines, and the inside of the diagonal line is set as non- Arrange the area of elliptical inner holes 3, and other areas are arranged with elliptical inner holes 3, and they are distributed in a right-angled triangle. The long axis of the inner holes 3 is arranged in the vertical direction. The diagonal line is set as a non-arranged elliptical inner hole 3 area, and the elliptical inner holes 3 in the two triangular areas are vertically aligned, and the number of holes in each vertical row is equal. The steel plate stiffener 2 is fixed on the inner filler steel plate 1 through bolts, nuts and steel backing plates. The steel column 4 and the steel beam 5 are connected with the inner filling steel plate 1 by bolts.

Claims (4)

1. partition type is prevented flexing perforate Wasted-energy steel plate wall, comprise: in fill out steel plate (1), steel plate stiffening rib (2) and steel column (4) and girder steel (5), in fill out steel plate (1) and be fixed in steel column (4) and the girder steel (5) by angle steel, bolt, it is characterized in that: in fill out and be cross in the steel plate (1) steel plate stiffening rib (2) is set; Fill out steel plate (1) in inciting somebody to action and be evenly divided into four rectangular areas; Each zone all is divided into two Delta Regions by diagonal wherein, be made as in the diagonal and establish zone, hole (3) in the non-layout, establish hole (3) in establishing in other zone, and rectangular Triangle-Profile, in fill out in the whole zone of steel plate (1), be made as in two diagonal and establish zone, hole (3) in the non-layout, establish hole (3) vertical non-alignment in two Delta Regions, the quantity of every vertical round equates.

2. the anti-flexing perforate Wasted-energy steel plate wall of partition type according to claim 1 is characterized in that establishing hole (3) for oval in described, and the major axis of establishing hole (3) in described is that vertical direction is arranged.

3. the anti-flexing perforate Wasted-energy steel plate wall of partition type according to claim 1 is characterized in that described steel plate stiffening rib (2) fills out on the steel plate (1) in being fixed on by bolt, nut and billet.

4. the anti-flexing perforate Wasted-energy steel plate wall of partition type according to claim 1, it is characterized in that described steel column (4) and girder steel (5) and in to fill out steel plate (1) with bolts.

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