Shaking table model test and numerical analysis of a long‐span cantilevered structure

Chen, Shiming; Kang, Ge; Xue, Wei; Lin, Yuan; Lin, Gao

doi:10.1002/tal.1478

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…A reduced scale model (1/15 scale) of a typical reinforced concrete frame-core tube with a corner column removed from the first floor was designed, fabricated, and tested, and experimental results were presented regarding the seismic responses and actual process of collapse. Chen et al 12 designed and manufactured a 1/30 scale model of a long-span cantilevered story building, and then tested it via a shaking table facility to analyze the dynamic behavior, cracking pattern, and the likely governing failure mechanism of the structure. In order to study the seismic behavior of a 53-storey supertall building with a high-level transfer storey, Lu et al 13 conducted shaking table tests on a 1/30-scale model of a prototype structure.…”

Section: Introductionmentioning

confidence: 99%

Shaking table test on seismic performance of a large-span high-rise building

Sun,

Bai,

Lai

2024

Sci Rep

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This paper describes investigations in respect of the seismic performance of a large-span high-rise building in a mountainous area. The building consists of a 135 m high shear wall structure and a 174.5 m long steel truss structure, with dampers used to enhance the seismic performance. A 1/40 scale model of the prototype structure was designed, and shaking table tests was conducted. The experiments simulated the wave passage effect and slope amplification effect based on the building site and structural characteristics of the prototype structure. The seismic performance of the prototype structure was analyzed through the damage phenomenon, dynamic characteristics, and dynamic response of the model under earthquake effects. The results show that three seismic waves were delayed by about 0.4 s and amplified by about 1.6 times after passing through the steel frame with viscous dampers, which could effectively simulate the wave passage effect and slope amplification effect in the test. The maximum story drift ratios of the model shear wall structure and steel truss structure were 1/1258 and 1/455 for the SLE and 1/568 and 1/185 for the MCE. The damping devices played a key role in energy dissipation. As a result, this research provides a reference for the seismic design and shaking table testing of large-span high-rise buildings.

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Section: Introductionmentioning

confidence: 99%

Shaking table test on seismic performance of a large-span high-rise building

Sun,

Bai,

Lai

2024

Sci Rep

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“…In seismic engineering, the shaking table test can genuinely reproduce the earthquake process by loading actual seismic records and is the most direct method for studying the seismic response and failure mechanism of structures. Meanwhile, many large and complex structures use shaking table tests to study and evaluate the seismic performance of structures [1][2][3][4][5][6]. However, large-span structures located in mountain areas might need some help simulating seismic wave input due to the limitations of shaking table performance when using shaking table tests to study the seismic response of some unique structures, as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Research on Seismic Wave Delay and Amplification Methods in the Shaking Table Test of Large-Span Structures in Mountain Areas

2023

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The traveling wave and slope amplification effects should be considered in the shaking table test of large-span structures in mountain areas. Based on the structural characteristics and site conditions of a large-span structure in a mountain area, this paper designed a high-rise steel frame structure with viscous dampers through finite element analysis to amplify seismic waves with a time delay. Then, the original structure and steel frame models with a similarity ratio of 1/40 were made for shaking table tests. The test results showed that a high-rise steel frame structure with reasonable viscous dampers could delay and amplify seismic waves, and the scaled model of the structure could play the same role in shaking table tests. Meanwhile, by comparing the seismic responses of large-span structural models in mountain areas before and after the amplification of seismic wave delays, it was found that the delay and amplification of seismic waves had little impact on the acceleration response of the structure. In contrast, the seismic wave delay played a dominant role in the change in the structural displacement response.

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“…Scale models are widely used for investigating the seismic behavior of different types of structures. [ 1,2 ] For long‐span or super high‐rise structures, geometric scale factors can be as large as 100 or larger. [ 3–5 ] The scale model testing relies on satisfying the similitude criteria between the model structure and the prototype structure.…”

Section: Introductionmentioning

confidence: 99%

Coordinative similitude method considering overturning effect for scale model testing of structures with rubber bearings

Ren

Liu

Zhu

et al. 2020

Structural Design Tall Build

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Generally, when a prototype is scaled down to a scale model, all parameters of the scale model should be designed to satisfy the similitude criteria. For a base-isolated structure with rubber bearings, however, it is technically difficult to obtain smallsized rubber bearings with the first shape factor satisfying the similitude criteria. This distortion affects the similitude ratio of the vertical stiffness of the bearings and, thus, influences the similitude ratio of the horizontal response of the structure because of the overturning effect. To solve this problem, a coordinative similitude method is proposed for scale model testing of structures with rubber bearings by adjusting configuration of the isolators to match the similitude ratio of the overturning stiffness of the isolation layer. A full-scale and two 1/3 scaled bearings were designed and tested, and their similitude relations were evaluated. Test results of the model bearings were extrapolated to the OpenSEES model of a conventional model building and a coordinative building designed based on the conventional similitude method and the coordinative similitude method, respectively. A comparison between seismic responses of two model buildings against the prototype building indicates that the coordinative similitude method has significantly larger accuracy than the traditional similitude method. K E Y W O R D S first shape factor, overturning effect, rubber bearings, scale model testing, similitude criteria, similitude method 1 | INTRODUCTION Scale models are widely used for investigating the seismic behavior of different types of structures. [1,2] For long-span or super high-rise structures, geometric scale factors can be as large as 100 or larger. [3-5] The scale model testing relies on satisfying the similitude criteria between the model structure and the prototype structure. [6-8] When a base-isolated structure with rubber bearings are scaled down for a shaking table test, however, it is difficult to obtain scale model rubber bearings with all of their parameters satisfying the similitude criteria. The geometric scale factor of the superstructure needs to be designed small enough to accommodate the dimension and payload of the shaking table, and as a result, the dimension of the scale model of the rubber bearings are designed very small in dimension. Table 1 lists the scale factors and the geometric details of some scale model rubber bearings used for shaking table tests in literature. [9-16] It can be noted that scale model rubber bearings need to be designed with diameters smaller than 150 mm in some cases. However, in these cases, the individual rubber layer thickness cannot be scaled down correctly. As stated in Kalpakidis, [14] "this is necessary when bearings are produced in an industrial environment: steel shims and rubber layers are available in specific minimum thickness that allows for reliable manufacturing." The deviation in rubber layer thickness reduces the first shape factor of the bearing, which is defined as the ratio of the effectiv...

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Shaking table model test and numerical analysis of a long‐span cantilevered structure

Cited by 3 publications

References 10 publications

Shaking table test on seismic performance of a large-span high-rise building

Shaking table test on seismic performance of a large-span high-rise building

Research on Seismic Wave Delay and Amplification Methods in the Shaking Table Test of Large-Span Structures in Mountain Areas

Coordinative similitude method considering overturning effect for scale model testing of structures with rubber bearings

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