Global vertical mode vibrations due to human group rhythmic movement in a 39 story building structure

Lee, Sang‐Hyun; Lee, Kyungkoo; Woo, Sung-Sik; Cho, Seung-Ho

doi:10.1016/j.engstruct.2013.09.035

Cited by 48 publications

(20 citation statements)

References 6 publications

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“…According to references [22,23], the human-induced force consists of three components, namely, vertical, lateral, and longitudinal, and the vertical component exhibits the highest amplitude, causing vertical structure vibration, particularly in the floor structure. As such, most studies on floor vibration only considered vertical human-induced force and structure vibration, which were widely adopted in this research field [7,8,17]. Only the vertical acceleration responses were recorded in this study because of the practice abovementioned.…”

Section: Experimental Programmentioning

confidence: 99%

“…Consequently, a TMD system was designed based on the experimental results of the uncontrolled tests ( Table 3) and studies of other authors [8,[15][16][17]. The frequency, mass, stiffness, damping, and layout of TMDs were all significant in the design process, and the frequency was the first determined parameter, followed by the definition of mass, stiffness, and damping.…”

Section: Mechanical Dynamic Control Devicesmentioning

confidence: 99%

“…However, AMDs present disadvantages, such as high cost, electric energy consumption, and special maintenance. TMDs were selected as the dynamic control devices applied to the structure after an overall consideration because they are efficient and inexpensive, as well as requiring low maintenance and offering fine applicability [15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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Control of human-induced vibration of an innovative CSBS–CSCFS

Chen

Ren

et al. 2015

Journal of Constructional Steel Research

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Section: Experimental Programmentioning

confidence: 99%

Section: Mechanical Dynamic Control Devicesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Control of human-induced vibration of an innovative CSBS–CSCFS

Chen

Ren

et al. 2015

Journal of Constructional Steel Research

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“…With reference to the vibration reduction design methods in the previous studies [9,[16][17][18], DH parameter adjustment method was used to simplify and optimize TMD calculation equations. The optimal stiffness and optimal damping equations for TMD are as follow:…”

Section: Study On Vibration Reductionmentioning

confidence: 99%

Study on Dynamic Behaviors and Vibration Reduction Techniques on Cable-Supported Ribbed Beam Composite Slab

2019

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Based on the cable-supported structure system, a new-style, highly-efficient and long-span pre-stressed floor structure, namely the cable-supported ribbed beam composite slab (CBS) was put forward. The research on dynamic behaviors of CBS was performed with both FEM and experimental methods. The research results indicate that the base frequency of CBS is low and the distribution of CBS's natural vibration frequencies is uniform and concentrated, the low-order modes are mainly vertical vibrations. Four important parameters of CBS were investigated, and the results show that the influence of the slab thickness and cable diameter on CBS's natural frequency is weak. The base frequency will be enhanced by increasing the sag-span ratio, but this effect is insignificant when the sag-span ratio exceeds 0.05. Increasing the depth of ribbed beam can boost the natural vibration frequencies, and this can improve the integral rigidity of CBS. Moreover, the low base frequency of CBS is within the frequency range of the pedestrian excitation loads, five pedestrian loads were used in the analysis, and the results indicate that the vibration comfort problem is significant. The tuned mass dampers (TMD) were used to reduce the structural vibration, when the parameters, numbers a nd locations of TMD are well designed, the pedestrian-induced vibration is reduced significantly and the reduction efficiency is 68.62%~84.21%.

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“…También en salas de baile donde se realizan movimientos coordinados o existe el efecto de varias personas aplaudiendo rítmicamente [43].…”

Section: Forjados De Salas De Baile Y Gimnasiosunclassified

Estudio de la transmisión de vibraciones por impacto en losas de hormigón y mortero

Vega¹

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Tesis Doctoral: Estudio de la transmisión de vibraciones en losas de hormigón y mortero.Daniel Ferrández Vega pág. 5 RESUMENEn la actualidad existe una amplia variedad de sistemas y materiales que se emplean como atenuadores del ruido de impacto y evitan la transmisión de vibraciones en los edificios. Muchos de estos sistemas empleados en construcción, se caracterizan por desolidarizar la capa de compresión del forjado de la estructura, cumpliendo con la condición de ser materiales elásticos.Para la realización de los ensayos acústicos que permiten validar un determinado material o sistema constructivo como atenuador de este tipo de ruidos, es necesario realizar una prueba poco económica y de difícil ejecución tal y como marca la actual norma UNE-EN ISO 140. En primer lugar se necesita elaborar un forjado de referencia, que ha de ensayarse independientemente. Después, se ha de colocar la losa flotante y volver a realizar la prueba, siendo la diferencia entre las medidas realizadas la que determina la reducción al ruido de impacto.En este trabajo se presenta un sistema capaz de detectar las vibraciones y mesurarlas más sencillo y económico, consistente en un dispositivo de golpeo alternativo y un sensor capaz de recoger, una vez producido el impacto, la energía absorbida por la placa. Producido el impacto, la baldosa sufre una deformación que absorbe parte de la energía, siendo la restante transmitida a través del material y, a su vez, causante del ruido aéreo inducido en la estancia colindante. La placa absorbe su energía a través de su propia deformación, la cual se mide con ayuda del sensor capacitivo.Es por ello que para realizar este estudio de la transmisión de vibraciones y evaluar los distintos modos de transmisión a través de las estructuras, se elaboraron planchas de diferentes geometrías y dos materiales distintos, hormigón y mortero, así como, también se varió la geometría de los aislantes y su tipología, poliestireno expandido con y sin elastificar. Además, se tomaron medidas en una losa de grandes dimensiones, que puede servir como premisa para elaborar un nuevo sistema alternativo de medida del aislamiento acústico a ruido de impacto.Palabras Clave: Vibración, ruido de impacto, sensor capacitivo, hormigón, mortero, poliestireno expandido.Tesis Doctoral: Estudio de la transmisión de vibraciones en losas de hormigón y mortero.Daniel Ferrández Vega pág. 6 ABSTRACTCurrently there is a large variety of systems and materials used as impact noise attenuators and prevent the transmission of vibrations in buildings. Many of these systems used in construction are characterized by separate the compression layer of the floor of the structure, provided the condition of being elastic materials.For conducting acoustic tests which validate a particular material or construction system as attenuator such noises, it is necessary to perform an uneconomical and difficult to execute test, such evidence as marks the current UNE-EN ISO 140. First place needs to develop a forged reference to be tested independently. Then, ...

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Global vertical mode vibrations due to human group rhythmic movement in a 39 story building structure

Cited by 48 publications

References 6 publications

Control of human-induced vibration of an innovative CSBS–CSCFS

Control of human-induced vibration of an innovative CSBS–CSCFS

Study on Dynamic Behaviors and Vibration Reduction Techniques on Cable-Supported Ribbed Beam Composite Slab

Estudio de la transmisión de vibraciones por impacto en losas de hormigón y mortero

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