Theoretical and experimental study on an innovative seismic retrofit solution for old brick masonry buildings

Shi, Sheng; Du, Dongsheng; Xu, Weizhi; Wang, Shuguang

doi:10.1016/j.engstruct.2020.111296

Cited by 11 publications

(3 citation statements)

References 13 publications

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“…Among the literature reports concerning applications of a non-conventional TMD, recently studies that focus numerically on the amplification of seismic demands in interstory isolated buildings subjected to near fault pulse type ground motions [17,18] are reported. Few studies instead regard experimentations conducted on a non-conventional TMD applied for inter-story isolation [19][20][21]. In [19], they explored experimentally the application of an aseismic roof isolation system with a small-scale laboratory model.…”

Section: Introductionmentioning

confidence: 99%

“…[20] proposed the utilization of a non-conventional TMD for application on an industrial steel structure, tested on a shaking table. The concept of a non-conventional TMD in a theoretical and experimental study on an innovative seismic retrofit solution realized adding new isolated upper stories on a reinforced old brick masonry building is applied in [21]. It is also worth mentioning the application implemented in an Italian historical tower of a non-conventional TMD [22].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Dynamic Response of a Multi-Story Frame Structure Equipped with Non-Conventional TMD Implemented via Inter-Story Isolation

Basili

Angelis

2022

Applied Sciences

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A shaking table experiment conducted on a multi-degrees-of-freedom frame structure equipped with a non-conventional tuned mass damper (TMD) is presented. The non-conventional TMD is characterized by a high mass ratio, without adding further structural masses, and is realized via inter-story isolation. The structure top story mass of a four-story steel frame structure is isolated and converted into tuned mass, connecting to the substructure with two high damping rubber bearings placed in series. Aspects related to the dynamic structural response as well as the seismic effectiveness assessment of a non-conventional TMD are addressed. Three structural configurations are tested: the reference four-story structure, the three-story intermediate structure, and the three-story structure equipped with a non-conventional TMD. The input motion conditions considered are: white noise, sine sweep, and natural earthquakes. Through experiments, structural identification is carried out and different dynamic behaviors emerge for the configurations tested. The nonlinear effects provoked on the structure by the adopted isolators are investigated, showing high dissipative capabilities in a wide range of amplitudes of the excitation. It is demonstrated that a non-conventional TMD is a smart control strategy useful for enhancing structural vibration mitigation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Dynamic Response of a Multi-Story Frame Structure Equipped with Non-Conventional TMD Implemented via Inter-Story Isolation

Basili

Angelis

2022

Applied Sciences

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“…Failure of a masonry wall is likely to be sudden and severe that poses significant debris hazard to building occupants when subjected to blast loads. According to the analysis of human casualties and property losses in explosion accidents, it had been found that the fragmentation of brick masonry also can cause damage to whether human or surrounding devices except high overpressure [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Research on Damage Characteristics of Brick Masonry under Explosion Load

Wei

Zheng

et al. 2021

Shock and Vibration

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As the main structural component of partition wall or load-bearing wall, brick masonry has been widely used in construction engineering. However, brick and mortar are all brittle materials prone to crack. Nowadays, fireworks, gas stoves, high-pressure vessels, and other military explosives may explode to damage nearby structures. Many explosion casualties had shown that the load-bearing capacity of brick masonry decreased dramatically and cracks or fragments appeared. Previous studies mainly focused on noncontact explosion in which shock wave is the main damage element. In fact, the response and damage effect of brick masonry wall under contact explosion are more complex, which attracts more attention now. In order to explore the damage characteristics of brick masonry under explosion load, a series of simulations and verification experiments are conducted. RHT and MO granular material models are introduced to describe the behaviour of brick and masonry, respectively, in simulation. The combination effect of front compressive wave and back tensile wave are main factors influencing the breakage of masonry wall. The experimental results are well in accordance with the simulation results. The front cross section dimension of crater is closely related to the radius of spherical explosive charge. A power function predictive model is developed to express the relationship between the radius of hole and the radius of explosive. Furthermore, with increasing the quantity of explosive charge, the number and ejection velocity of fragments are all increased. The relationship between maximum ejection velocity and the quantity of explosive also can be expressed as a power function model.

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Seismic Vulnerability Analysis of Symbiosis of New-Built Structure and Historic Heritage Architecture Based on Incremental Dynamic Analysis

Zou,

Yang,

Zhou

et al. 2023

Mechanisms and Machine Science

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Theoretical and experimental study on an innovative seismic retrofit solution for old brick masonry buildings

Cited by 11 publications

References 13 publications

Experimental Dynamic Response of a Multi-Story Frame Structure Equipped with Non-Conventional TMD Implemented via Inter-Story Isolation

Experimental Dynamic Response of a Multi-Story Frame Structure Equipped with Non-Conventional TMD Implemented via Inter-Story Isolation

Research on Damage Characteristics of Brick Masonry under Explosion Load

Seismic Vulnerability Analysis of Symbiosis of New-Built Structure and Historic Heritage Architecture Based on Incremental Dynamic Analysis

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