Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dynamic response analyses of long-span cable-stayed bridges subjected to pulse-type ground motions
https://orcid.org/0000-0003-3968-8052
Abstract This paper presents the dynamic response analyses of a special long-span cable-stayed bridge with the main span length of 680 (m) subjected to pulse-type ground motions. The 1/100 scaled shaking table test are developed herein to verify the accuracy and correctness of the 3D finite element (FE) model of the examined long-span cable-stayed bridge on the software platform of SAP2000. To systematically investigate the influence on the seismic responses and on the selection of the nonlinear viscous damper parameters of the employed long-span cable-stayed bridge both the near-fault pulse-type ground motions and the far-field ground motions are selected as the seismic inputs of FE model. Some important conclusions are drawn that the near-fault ground motions usually causes the larger peak responses (e.g., Tower top displacement, girder end displacement, and moment of tower bottom) of the long-span cable-stayed bridge compared with the far-field motions, namely the near-fault ground motions are more destructive to the structures. The displacement responses can be amplified approximately 2–3 times and the damper parameters (Damping coefficient C and damping index α) of nonlinear viscous dampers can be affected by the ground motion characteristics. The damper parameter values are changed from the C = 3000 and α = 0.3 in far-field earthquakes to the C = 6000 and α = 0.2 in near-fault earthquakes, namely the near-fault ground motions obviously increase the demand of energy consumption of general nonlinear viscous dampers.
Highlights The 1/100 scaled shaking table test are developed to verify the accuracy and correctness of the 3D finite element (FE) model of the long-span cable-stayed bridge established on the software platform of SAP2000. Dynamic response analyses of a long-span cable-stayed bridge with the main span of 680 (m) subjected to pulse-type ground motion excitations are conducted. The near-fault pulse-type and the far-field ground motions are selected to systematically investigate the influence on the seismic responses and the nonlinear viscous damper parameters selection of the employed long-span cable-stayed bridge. RecommendationsHighlights should only consist of 125 characters per bullet point, including spaces. The highlights provided are too long; please edit them to meet the requirement.--> for the seismic design of bridges subjected to pulse-type ground motion excitations are drawn.
Dynamic response analyses of long-span cable-stayed bridges subjected to pulse-type ground motions
https://orcid.org/0000-0003-3968-8052
Abstract This paper presents the dynamic response analyses of a special long-span cable-stayed bridge with the main span length of 680 (m) subjected to pulse-type ground motions. The 1/100 scaled shaking table test are developed herein to verify the accuracy and correctness of the 3D finite element (FE) model of the examined long-span cable-stayed bridge on the software platform of SAP2000. To systematically investigate the influence on the seismic responses and on the selection of the nonlinear viscous damper parameters of the employed long-span cable-stayed bridge both the near-fault pulse-type ground motions and the far-field ground motions are selected as the seismic inputs of FE model. Some important conclusions are drawn that the near-fault ground motions usually causes the larger peak responses (e.g., Tower top displacement, girder end displacement, and moment of tower bottom) of the long-span cable-stayed bridge compared with the far-field motions, namely the near-fault ground motions are more destructive to the structures. The displacement responses can be amplified approximately 2–3 times and the damper parameters (Damping coefficient C and damping index α) of nonlinear viscous dampers can be affected by the ground motion characteristics. The damper parameter values are changed from the C = 3000 and α = 0.3 in far-field earthquakes to the C = 6000 and α = 0.2 in near-fault earthquakes, namely the near-fault ground motions obviously increase the demand of energy consumption of general nonlinear viscous dampers.
Highlights The 1/100 scaled shaking table test are developed to verify the accuracy and correctness of the 3D finite element (FE) model of the long-span cable-stayed bridge established on the software platform of SAP2000. Dynamic response analyses of a long-span cable-stayed bridge with the main span of 680 (m) subjected to pulse-type ground motion excitations are conducted. The near-fault pulse-type and the far-field ground motions are selected to systematically investigate the influence on the seismic responses and the nonlinear viscous damper parameters selection of the employed long-span cable-stayed bridge. RecommendationsHighlights should only consist of 125 characters per bullet point, including spaces. The highlights provided are too long; please edit them to meet the requirement.--> for the seismic design of bridges subjected to pulse-type ground motion excitations are drawn.
Dynamic response analyses of long-span cable-stayed bridges subjected to pulse-type ground motions
https://orcid.org/0000-0003-3968-8052
Abstract This paper presents the dynamic response analyses of a special long-span cable-stayed bridge with the main span length of 680 (m) subjected to pulse-type ground motions. The 1/100 scaled shaking table test are developed herein to verify the accuracy and correctness of the 3D finite element (FE) model of the examined long-span cable-stayed bridge on the software platform of SAP2000. To systematically investigate the influence on the seismic responses and on the selection of the nonlinear viscous damper parameters of the employed long-span cable-stayed bridge both the near-fault pulse-type ground motions and the far-field ground motions are selected as the seismic inputs of FE model. Some important conclusions are drawn that the near-fault ground motions usually causes the larger peak responses (e.g., Tower top displacement, girder end displacement, and moment of tower bottom) of the long-span cable-stayed bridge compared with the far-field motions, namely the near-fault ground motions are more destructive to the structures. The displacement responses can be amplified approximately 2–3 times and the damper parameters (Damping coefficient C and damping index α) of nonlinear viscous dampers can be affected by the ground motion characteristics. The damper parameter values are changed from the C = 3000 and α = 0.3 in far-field earthquakes to the C = 6000 and α = 0.2 in near-fault earthquakes, namely the near-fault ground motions obviously increase the demand of energy consumption of general nonlinear viscous dampers.
Highlights The 1/100 scaled shaking table test are developed to verify the accuracy and correctness of the 3D finite element (FE) model of the long-span cable-stayed bridge established on the software platform of SAP2000. Dynamic response analyses of a long-span cable-stayed bridge with the main span of 680 (m) subjected to pulse-type ground motion excitations are conducted. The near-fault pulse-type and the far-field ground motions are selected to systematically investigate the influence on the seismic responses and the nonlinear viscous damper parameters selection of the employed long-span cable-stayed bridge. RecommendationsHighlights should only consist of 125 characters per bullet point, including spaces. The highlights provided are too long; please edit them to meet the requirement.--> for the seismic design of bridges subjected to pulse-type ground motion excitations are drawn.
Dynamic response analyses of long-span cable-stayed bridges subjected to pulse-type ground motions
Jia, Hongyu (Autor:in) / Liu, Zhi (Autor:in) / Xu, Li (Autor:in) / Bai, Hao (Autor:in) / Bi, Kaiming (Autor:in) / Zhang, Chao (Autor:in) / Zheng, Shixiong (Autor:in)
10.10.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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