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A platform for research: civil engineering, architecture and urbanism
Seismic behavior of low shear-span ratio double-skin composite wall with L-shaped connectors
Abstract A double-skin composite wall (DSCW) with innovative L-shaped connectors was proposed, which can be simply constructed and quickly assembled to promote the development of a prefabricated steel structure. To further examine the seismic capacity of the novel DSCW, five DSCWs were designed and fabricated, each with a low shear-span ratio. The testing parameters include the welding spacing, distance between connectors, and the width-to-thickness ratio of the wall-to-steel faceplate. The failure mode of each DSCW specimen was observed, while determining the load-carrying capacity, the hysteretic curve, the skeleton curve, and the displacement ductility coefficient. Moreover, the distribution and development of the boundary column strains, steel faceplate strains, and L-shaped connector strains were researched. The test results showed that the DSCWs with a low shear-span ratio had excellent load-carrying capacity and ductility, and all specimens experienced flexural-shear failure. Decreasing the welding spacing of L-shaped connectors or reducing the distance between L-shaped connectors can enhance the capacity of energy dissipation and ductility, but such a distance reduction has a slight effect on the shear strength. When the thickness of the steel faceplate on different specimens is the same, the load-carrying capacity of the DSCW specimen obviously improves as the width-to-thickness ratio of the wall-to-steel faceplate increases. Finally, shear strength calculation formulas of the novel DSCW under the low shear-span ratio were established.
Highlights A double-skin composite wall (DSCW) with innovative L-shaped connectors was proposed, which can be simply constructed and quickly assembled. The test results showed that the novel DSCWs with low shear-span ratio had excellent load-carrying capacity and ductility, and all specimens experienced flexural-shear failure The load-carrying capacity underwent a noteworthy improvement when the width-to- thickness ratio of the wall-to-steel faceplate was increased. Shear strength calculation formulas of the novel DSCW under the low shear-span ratio were established.
Seismic behavior of low shear-span ratio double-skin composite wall with L-shaped connectors
Abstract A double-skin composite wall (DSCW) with innovative L-shaped connectors was proposed, which can be simply constructed and quickly assembled to promote the development of a prefabricated steel structure. To further examine the seismic capacity of the novel DSCW, five DSCWs were designed and fabricated, each with a low shear-span ratio. The testing parameters include the welding spacing, distance between connectors, and the width-to-thickness ratio of the wall-to-steel faceplate. The failure mode of each DSCW specimen was observed, while determining the load-carrying capacity, the hysteretic curve, the skeleton curve, and the displacement ductility coefficient. Moreover, the distribution and development of the boundary column strains, steel faceplate strains, and L-shaped connector strains were researched. The test results showed that the DSCWs with a low shear-span ratio had excellent load-carrying capacity and ductility, and all specimens experienced flexural-shear failure. Decreasing the welding spacing of L-shaped connectors or reducing the distance between L-shaped connectors can enhance the capacity of energy dissipation and ductility, but such a distance reduction has a slight effect on the shear strength. When the thickness of the steel faceplate on different specimens is the same, the load-carrying capacity of the DSCW specimen obviously improves as the width-to-thickness ratio of the wall-to-steel faceplate increases. Finally, shear strength calculation formulas of the novel DSCW under the low shear-span ratio were established.
Highlights A double-skin composite wall (DSCW) with innovative L-shaped connectors was proposed, which can be simply constructed and quickly assembled. The test results showed that the novel DSCWs with low shear-span ratio had excellent load-carrying capacity and ductility, and all specimens experienced flexural-shear failure The load-carrying capacity underwent a noteworthy improvement when the width-to- thickness ratio of the wall-to-steel faceplate was increased. Shear strength calculation formulas of the novel DSCW under the low shear-span ratio were established.
Seismic behavior of low shear-span ratio double-skin composite wall with L-shaped connectors
Chen, Lihua (author) / Jin, Qiliang (author) / Shi, Jintao (author) / Zhu, Youshen (author)
2022-09-04
Article (Journal)
Electronic Resource
English
Seismic Performance of Precast Double-Skin Composite Shear Wall with Horizontal Connection Region
| DOAJ | 2024