Research on Structural Design of an Isolated High-Rise Building with Enlarged Base and Multiple Tower Layer in High-Intensity Area

Zhang, Haotian; Li, Fuju; Tai, Ji; Zhou, Jun Ling

doi:10.1155/2021/6669388

Cited by 10 publications

(4 citation statements)

References 12 publications

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“…Therefore, raising the upper isolated layer area of the new staggered story isolated structure is greatly beneficial to the bearing capacity and collapse resistance of the structure. For instance, a large chassis frame structure is designed below the upper isolated layer to expand the area of the upper isolated layer, making the structure more inclined to the layer isolated structure and ensuring the stability of the lower structure (Charmpis et al, 2012;Zhang et al, 2021). 3) In this paper, the failure modes of the new staggered story isolated structure are analyzed but the failure modes of the inter-story isolated structure and the base isolated structure are not compared.…”

Section: Further Researchmentioning

confidence: 99%

Study on failure modes of a new staggered story isolated structure based on IDA method

Chen

Wang

et al. 2023

Front. Earth Sci.

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New staggered story isolated structure is a new type of isolated system. This paper explores the failure mode of a new staggered story isolated structure with the increment dynamic analysis (IDA) method. On the basis of a finite model of a new isolated structure with staggered stories, a failure criterion for isolated structure was established. The findings indicate that the new staggered, isolated structure has good collapse resistance. When the story angle limit is 1/100, the primary structure will fail before the isolated layer in the event of a strong earthquake, and failure typically happens at the base of the structure where components with a higher bearing capacity should be used. Under the impact of the P-δ effect, the upper isolated layer is more prone to failure than the lower isolated layer. The upper isolated layer may have a tensile stress exceeding 1MP and a horizontal displacement exceeding 385 mm, which may lead to the risk of structural overturning. Therefore, higher strength supports should be selected for the weak position of the isolated layer.

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Section: Further Researchmentioning

confidence: 99%

Study on failure modes of a new staggered story isolated structure based on IDA method

Chen

Wang

et al. 2023

Front. Earth Sci.

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“…Assuring the integrity of the core-tube is a benefit of the new staggered story isolated system. One of the emblematic structures of the new staggered story isolated system, Baotou's Huafa Xintiandi Project [1], is located in Inner Mongolia, China. Additionally, the Second Phase of Haikou Meilan Airport [2] and the North Terminal of Urumqi International Airport [3] both use the new staggered story isolation system.…”

Section: Introductionmentioning

confidence: 99%

Progressive Collapse Resistance of a New Staggered Story Isolated System

Yang,

Mi,

et al. 2024

OJAppS

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A new staggered isolated system developed from the mid-story isolated system is the new staggered story isolated system. There are not many studies on this structure currently. In this study, an 18-story new staggered story isolated system model is established using SAP2000. The dynamic nonlinear dynamic alternate method is used to analyze the structure against progressive collapse. Results show that the structure has good resistance to progressive collapse, and there is no progressive collapse under each working condition. The progressive collapse does not occur for the case of removing only one vertical structural member of the new staggered of isolated system. The side column has big influence on this isolated structures' progressive collapse; the removal of vertical structural member of the isolation layer has less impact on the structure than the removal of the bottom vertical structural member. After the removing of the member, the internal force of the structure will be redistributed, and the axial force of the adjacent columns will change obviously, showing a trend of "near large and far small".

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“…The tower building on the large chassis is characterized by vertical irregularity. The isolated layer is set where the structure occurs an abrupt change by using the layer spacing technology to consume seismic energy and avoid the problem of complex internal force at the abrupt change of the stiffness (Zhang H et al, 2021). The seismic performance of the multi-tower foundation isolated structure is discussed, and the parameters such as inter-story displacement, shear force and displacement angle of the structure under ground motion are analyzed.…”

Section: Introductionmentioning

confidence: 99%

Study on the seismic response of new staggered story isolated structure under different parameters

Shu

Wang

et al. 2023

Front. Earth Sci.

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The new staggered story isolated structure is developed according to the base-isolated structure and the mid-story isolated structure. Quantitative calculation and evaluation of seismic damage are very important for structural safety. In this paper, the seismic damage evaluation of a new staggered story isolated structure is studied by numerical simulation and damage index calculation. A new staggered story isolated structure is established, and the effects of different layers and different chassis areas on the seismic response of the structure are studied. When the position of the bottom isolated layer stays the same, the upper isolated layer is set at different layers, which is set to the top of the 3rd, 6th and 9th layers. When the upper isolated layer keeps at the top of the 3rd layer, the chassis area is set at a different area, which is 26 m × 26 m, 36 m × 36 m and 46 m × 46 m. The results show that the new staggered story isolated structure has good isolated effects under the ground motion. For the structure set upper isolation layer is lower, the inter-layer shear force, inter-layer acceleration and inter-layer displacement are reduced. The energy dissipation effect of the structure improves. The core tube is less damaged and the plastic hinge is smaller. With the increase of chassis area, the isolated effect of the part above the upper isolated layer is good, while the shear force and acceleration of the part below the upper isolated layer of the structure increase, the damage at the core tube changed little and the appearance of the plastic hinge increased. Under earthquakes, with the change in position of the upper isolated layer and the area of the chassis of the new staggered story isolated structure, the displacement, tensile stress and compressive stress of the isolated bearing still meet the requirements of the standard.

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Research on Structural Design of an Isolated High-Rise Building with Enlarged Base and Multiple Tower Layer in High-Intensity Area

Cited by 10 publications

References 12 publications

Study on failure modes of a new staggered story isolated structure based on IDA method

Study on failure modes of a new staggered story isolated structure based on IDA method

Progressive Collapse Resistance of a New Staggered Story Isolated System

Study on the seismic response of new staggered story isolated structure under different parameters

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