Seismic Response Analysis of Multi-Span Continuous Deck-Type Reinforced Concrete Double Ribs Arch Bridge

Reinforced concrete rib arch bridge is widely used in southwest of china, therefore, it is practically significant to assess the seismic performance of this kind of bridge. In this paper, a deck-type double ribs arch bridge which has eleven large continuous spans is taken for instance. The finite element calculation models for the bridge are established considering arch effect. The M-method principle is used to simulate the pile-soil-structure interaction (PSSI), and multiple Ritz vector method is introduced to analyze the dynamic characteristics. Moreover, the seismic response of arch bridge is analyzed by the response spectrum method. Numeral results show that, the dominant vibration mode of the Multi-span continuous deck-type reinforced concrete rib arch bridge is out-of-plane mode, owing to the weak lateral stiffness. The arch effect can reinforce the longitudinal stiffness of bridge, but weaken the lateral stiffness. Combined with horizontal direction orthogonal seismic action, arch effect can significantly reduce the axial force of rib, while increase the moment and shear of the arch foot and the displacement of the arch. The rib arch, the 1/4 points and the junctions of ribs and beams are the seismic control points. PSSI is the key factor of bridge seismic.

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Reinforced Concrete Frame Structure Dynamic Analysis Based on SAP2000

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.744-746.211 ◽

2015 ◽

Vol 744-746 ◽

pp. 211-216

Author(s):

Ju Fang Zhong ◽

Zhi Peng Fan ◽

Luo Long Zhan ◽

Jun Wei Liang

Keyword(s):

Reinforced Concrete ◽

Damage Detection ◽

Response Spectrum ◽

Frame Structure ◽

Response Analysis ◽

Seismic Action ◽

Acceleration Response ◽

Reinforced Concrete Frame ◽

Concrete Frame ◽

Reinforced Concrete Frame Structure

Structure under long-term load, environmental erosion, material aging, especially under the seismic action can cause damage accumulation and bearing capacity decrease. In order to make sure its safety and reliable, avoid extreme cases of catastrophic accident, it is necessary to carry out the engineering structural health diagnosis. Using SAP2000 software, seismic response analysis for a two layer reinforced concrete frame structure is carried out. The laws of the acceleration response time history and spectrum under different seismic action were found out by discussing structure in no damage and different damages. The results showed that no matter where the damage located, the top node response increment is bigger than the middle node, the peak of acceleration response spectrum changes little with the beam damage degrees changing. Selecting the acceleration response peak of the top node as a structural damage index is feasible in the damage detection and identification of engineering structures, but analyzing the response spectrum for damage detection is unpractical.

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Near-Fault Seismic Response Analysis of Bridges Considering Girder Impact and Pier Size

Mathematics ◽

10.3390/math9070704 ◽

2021 ◽

Vol 9 (7) ◽

pp. 704

Author(s):

Wenjun An ◽

Guquan Song ◽

Shutong Chen

Keyword(s):

Seismic Response ◽

Bending Moment ◽

Expansion Method ◽

Response Analysis ◽

Seismic Action ◽

Transient Wave ◽

Cross Sectional ◽

Displacement Response ◽

Near Fault ◽

Continuous Girder Bridge

Given the influence of near-fault vertical seismic action, we established a girder-spring-damping-rod model of a double-span continuous girder bridge and used the transient wave function expansion method and indirect modal function method to calculate the seismic response of the bridge. We deduced the theoretical solution for the vertical and longitudinal contact force and displacement response of the bridge structure under the action of the near-fault vertical seismic excitation, and we analyzed the influence of the vertical separation of the bridge on the bending failure of the pier. Our results show that under the action of a near-fault vertical earthquake, pier-girder separation will significantly alter the bridge’s longitudinal displacement response, and that neglecting this separation may lead to the underestimation of the pier’s bending damage. Calculations of the bending moment at the bottom of the pier under different pier heights and cross-sectional diameters showed that the separation of the pier and the girder increases the bending moment at the pier’s base. Therefore, the reasonable design of the pier size and tensile support bearing in near-fault areas may help to reduce longitudinal damage to bridges.

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Seismic Response Analysis of Piping System with Friction Support. Maximum Response Estimation Using Frictional Response Spectrum.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C ◽

10.1299/kikaic.64.825 ◽

1998 ◽

Vol 64 (619) ◽

pp. 825-830 ◽

Cited By ~ 5

Author(s):

Tetsuya WATANABE ◽

Kohei SUZUKI

Keyword(s):

Seismic Response ◽

Response Spectrum ◽

Maximum Response ◽

Response Analysis ◽

Piping System ◽

Seismic Response Analysis

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Seismic Response Analysis of CFST Arch Bridge Considering Input Earthquake Characteristics

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.255-260.962 ◽

2011 ◽

Vol 255-260 ◽

pp. 962-966

Author(s):

Fan Xing ◽

Lin Zhao ◽

Ya Zhe Xing

Keyword(s):

Seismic Response ◽

Research Result ◽

Steel Tube ◽

Response Analysis ◽

Vibration Period ◽

Arch Bridge ◽

Near Fault ◽

Long Span ◽

Cfst Arch Bridge ◽

Out Of Plane

In view of huge destructibility of the near-fault ground motions, structures with long natural vibration period are liable to fall into nonlinear reaction stage. Based on a full understanding of the near-fault seismic spectrum characteristics, the out-of-plane seismic response of a long span concrete-filled steel tube (CFST) arch bridge was studied in depth, and the research result could offer a reference for near-fault aseismic design.

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Three-dimensional seismic response analysis of self-anchored cable-stayed suspension bridge with response spectrum method

Bridge design, construction and maintenance ◽

10.1680/bdcam.35935.0015 ◽

2007 ◽

pp. 132-141

Author(s):

Zhu Weizhi ◽

Zhang Zhe ◽

Yu Baochu

Keyword(s):

Seismic Response ◽

Response Spectrum ◽

Three Dimensional ◽

Suspension Bridge ◽

Response Analysis ◽

Response Spectrum Method ◽

Seismic Response Analysis ◽

Spectrum Method

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A generalized response spectrum method for seismic response analysis of underground structure combined with viscous-spring artificial boundary

Soil Dynamics and Earthquake Engineering ◽

10.1016/j.soildyn.2020.106451 ◽

2021 ◽

Vol 140 ◽

pp. 106451

Author(s):

Zhidong Gao ◽

Mi Zhao ◽

Xiuli Du ◽

Zilan Zhong

Keyword(s):

Seismic Response ◽

Response Spectrum ◽

Underground Structure ◽

Response Analysis ◽

Response Spectrum Method ◽

Seismic Response Analysis ◽

Artificial Boundary ◽

Spectrum Method

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Study on the Characters of Seismic Response Spectra Based on China Financial Information Mansion

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.580-583.1729 ◽

2014 ◽

Vol 580-583 ◽

pp. 1729-1733

Author(s):

Ming Li ◽

Yuan Qing Wang ◽

Wei Tao ◽

Bin Wang ◽

Qing Xian Yu ◽

...

Keyword(s):

Seismic Response ◽

Response Spectrum ◽

Response Spectra ◽

Financial Information ◽

Amplification Coefficient ◽

Response Analysis ◽

Magnification Factor ◽

Characteristic Period ◽

Seismic Coefficient ◽

Dynamic Magnification Factor

Rare study is done on floor response spectrum of super-high rise building, but it is an important condition for the seismic response analysis of floor subsidiary structure. Therefore, based on the early calculation model of China Financial Information Mansion, the floor response spectrum is calculated under different input ground motion. The floor and ground response spectrum is compared with each other from the seismic coefficient, dynamic amplification coefficient, characteristic period and the form of response spectrum. The results shows that: the floor seismic coefficient and the magnification coefficient are greater or smaller than the ground ones, the biggest difference of which is nearly 1 times; all the floor character period are greater than the ground ones, the biggest difference of which is over 60%; there are obvious differences between the floor and ground dynamic magnification factor spectra form under some conditions, of which the second peak of the former one is probably very large, even near to the peak of the first one, while the latter has no such phenomenon. Therefore, during the process of calculating the seismic response of floor subsidiary structure, it is necessary to consider the change of floor seismic coefficient, dynamic magnification factor, characteristic period and spectra form based on the main structure.

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Optimization Design of Core Thickness of Exterior Frame and Core Hybrid Structures in High-Rise Buildings

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.166-169.14 ◽

2012 ◽

Vol 166-169 ◽

pp. 14-18

Author(s):

Shu Yun Zhang ◽

Wen Wei Zhao ◽

Hai Hua Wang

Keyword(s):

Seismic Response ◽

Optimization Design ◽

Dynamic Properties ◽

Response Spectrum ◽

Optimization Method ◽

Hybrid Structure ◽

Hybrid Structures ◽

Response Analysis ◽

High Rise ◽

Core Thickness

Considering core thickness is important issue to performance of exterior frame and core hybrid structure in high-rise buildings, seismic response analysis is conducted by response spectrum method for finite element models with different core thickness. The optimization design of core thickness of hybrid Structures on the basis of the seismic response is studied, the core thicknesses are chosen as design variables, the objective function about core volume is adopted, some specification requirements such as deformation, the ratio of lateral stiffness to gravity, storey shear to gravity, storey shear of exterior frame, axial compression ratio of column and wall limb, bearing capacity of structural member and core construction are regarded as restricting conditions, the optimal mathematical model is established for reflecting integrity dynamic properties of hybrid structure. The ANSYS software is used for optimizing tool, the hybrid structures optimization design are made through different initial values for verifying convergence of optimization method, the optimal result show that the performances of hybrid structure are improved, the internal forces are reduced and the ratios of inner force born by exterior frames are increased in the optimal scheme.

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Seismic Response for a Reinforce Concrete Specimen Considering Corrosive Hazards

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.764-765.1124 ◽

2015 ◽

Vol 764-765 ◽

pp. 1124-1128 ◽

Cited By ~ 1

Author(s):

Wei Ting Lin ◽

Yuan Chieh Wu ◽

An Cheng ◽

Tzu Ying Lee

Keyword(s):

Reinforced Concrete ◽

Dynamic Response ◽

Seismic Response ◽

Corrosion Test ◽

Natural Frequencies ◽

Response Spectrum ◽

Open Circuit ◽

Reinforced Concrete Frame ◽

Accelerated Corrosion ◽

Accelerated Corrosion Test

This study is aim to evaluate the dynamic response variation of the scale-down reinforced concrete frame specimen under accelerated corrosion conditions. The specimens achieved the accelerated corrosion test by immersing in the accelerated corrosion test. Open circuit potential, corrosion rate, natural frequencies, displacements, accelerations and response spectral curves were tested and discussed. Test results presented that the corroded reinforced concrete specimens presented the changes in the dynamic response especially natural frequencies and response spectrum. This study provided further insight on the variation of seismic response behaviors in the deteriorated reinforced concrete structures and hoped to useful for structural assessments and appraisals applied to full-scale structures.

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