High-ductility coupled shear wall

Abstract

The invention discloses a high-ductility coupled shear wall. In comparison with the regular coupled shear wall, the coupled shear wall is characterized in that: coupling beams of the coupled shear wall are prefabricated staggered type diagonally reinforced coupling beams, and a filling material of a plastic hinge region is high-ductility fiber concrete; in comparison with the regular coupling beam with a small span-depth ratio, the staggered type diagonally reinforced coupling beams are characterized in that the coupling beams are provided with diagonal reinforcements without lacing bars, and the filling material is high-ductility fiber concrete. According to the invention, coupling beam substrates in the coupled shear wall adopt high-ductility fiber concrete, the diagonal reinforcements are not provided with the lacing bars, the amount of reinforcing steel bars is reduced on the premise of ensuring the anti-seismic property of the coupling beams, the construction difficulty caused by congestion of the reinforcing steel bars is reduced, and the coupling beams are prefabricated, so that the construction period of the coupled shear wall is shortened; a substrate material of the plastic hinge region of wall columns of the shear wall and a substrate material of the coupling beams adopt high-ductility fiber concrete, so that the integrated anti-seismic property of the coupled shear wall is fully ensured.

Description

technical field [0001] The invention relates to a shear wall, in particular to a high ductility coupled shear wall which uses high ductility fiber concrete as a filling material and a small span-to-height ratio cross-type diagonally inclined reinforcement coupling beam as a coupling beam. Background technique [0002] Shear walls, also known as wind-resistant walls or earthquake-resistant walls, structural walls, use reinforced concrete wall panels to replace beams and columns in frame structures, and can bear internal forces caused by various loads, mainly bearing horizontal loads caused by wind loads or earthquakes of the wall. Due to the functional requirements of the structure, it is sometimes necessary to open door and window openings in the shear wall. According to the presence, size, shape and location of openings, shear walls can be divided into full section walls, integral small opening walls, combined limb walls and wall frames. When the shear wall has no opening...

AI Technical Summary

Problems solved by technology

[0003] The existing combined shear wall design has the following problems: 1) Since the span of the connecting beam in the combined shear wall is not large, but in order to satisfy the rigidity of the connecting beam to ensure the integrity of the combined shear wall, the The lateral movement of the shear wall under the horizontal load is not too large, and the cross-sectional height of the connecting beam cannot be too small, so the span-to-height ratio of the connecting beam is generally small (less than 2.5). High-ratio coupling beams (such as figure 1 As shown, conventional small-span-to-height ratio coupling beams (including longitudinal reinforcement 2, stirrup reinforcement 3 outside the longitudinal reinforcement 2, and ordinary concrete filling material) cannot avoid premature shear failure of itself, thus failing to satisfy the structure’s seismic requirements. performance requirements

However, due to the brittle failure mechanism and deformation mode of concrete, it is difficult to ensure the seismic and shear resistance of the plastic hinge area of ​​the shear wall in the design, such as concrete crushing of edge members, oblique tension and baroclinic failure caused by shear force, and failure along construction joints. Slip shear failure, buckling of reinforced steel bars, etc.

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