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Introduction to a recently released dataset entitled CSNCD:A Comprehensive Dataset of Chinese seismic Network

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Earthquake Research Advances 2024年第1期4卷 1-3页

作者： Yanru An China Earthquake Networks Center Beijing 100045China

China and its adjacent regions are heavily affected by earthquake disasters,which has led to strong demand and vigorous development of the Chinese seismic Network(CSN).Since 2004,China Earthquake Networks Center(CENC)has been authorized by China Earthquake Administration(CEA)to take charge of CSN management,mainly observing product output and quality control.

关键词： seismic Earthquake earthquake

Erratum to: Evaluation of the Relative Tectonic Activity from the Faults in the Gengma-Lancang-Menghai seismic Belt (Southwestern China)

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Journal of Earth Science 2024年第3期35卷 1087-1087页

作者： Dan Wang Youpu Dong Zhipeng Xie Dongyue Zhang Jiaxin Duan Huayu Yu Liang Yu Faculty of Land Resource Engineering Kunming University of Science and TechnologyKunming 650093China

The original version of this article unfortunately contained a *** presentation of an author's name was *** corrected oneis given below.

关键词： seismic Lancang Tectonic

Erratum to:A review of the wave gradiometry method for seismic imaging

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Earthquake Science 2024年第1期37卷 91-91页

作者： Chuntao Liang Feihuang Cao Zhijin Liu Yingna Chang Key Laboratory of Earth Exploration and Information Techniques of the China Ministry of Education Chengdu 610059China State Key Laboratory of Oil and Gas Reservoir Geology and Exploration Chengdu 610059China Exploitation and Development Research Institute Northwest Oilfield Branch of SinopecUrumqi 830000China

Earthq Sci 2023(36):254-281 Doi:10.1016/***.2023.04.002 In the original version of this article,the important funding source was inadvertently omitted in Acknowledgement *** corrected one is as follows.

关键词： seismic Earth source

Southwest China community velocity model V2.0:The key to decipher active tectonics and seismic hazards in Sichuan-Yunnan region

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Science China Earth Sciences 2023年第10期66卷 2395-2398页

作者： Yong ZHENG State Key Laboratory of Geological Processes and Mineral Resources School of Geophysics and GeomaticsChina University of GeosciencesWuhan430074China Hubei Subsurface Multi-Scale Imaging Key Laboratory Wuhan430074China

*** of the Southwest China community velocity model(SWChina CVM),As a result of the collision between the Indian and Eurasian Plates,crustal materials in the Tibetan Plateau extrude southeastward,leading to a series o... 详细信息

关键词： seismic crustal Eurasian

2D seismic interpretation of Sawan gas field integrated with petrophysical analysis:A case study from Lower Indus Basin,Pakistan

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能源地球科学(英文) 2023年第2期4卷 35-48页

作者： Abd Ur Rehman Khan Muhammad Amar Gul Rizwan Sarwar Awan Ashar Khan Khawaja Hasnain Iltaf Sibt.E Hassan Butt Oil and Gas Development Company IslamabadPakistan CAS Key Laboratory of Crust-Mantle Materials and Environments University of Science and Technology of ChinaHefei230026China School of Resources and Environmental Engineering Hefei University of TechnologyHefei230009China Water and Power Development Authority Pakistan Department of Earth&Environmental Sciences The University of Texas at ArlingtonUnited States Geological Survey of Pakistan LahorePakistan

The Lower Indus Basin is the leading hydrocarbon-bearing sedimentary basin in *** study has been conducted on the Sawan gas field located in the Lower Indus Basin,adjacent to a few other wellknown gas fields of Pakistan like Kadanwari,Qadirpur,and Miano gas *** research aims to present the spatial distribution and reservoir potential of the productive zones of the Lower Goru *** present study utilized various two-dimensional(2D)seismic lines and well-log data(Sawan-01 and Sawan-02)to investigate the structural and stratigraphic features of the *** stratigraphic layers are mildly deepening in the southeast *** 2D seismic interpretation of the research area identifies the existence of extensional remanents,i.e.,normal *** extensional structures are associated with horst and graben geometry that acts as a trapping mechanism for *** logs are used to identify the reservoir's diverse lithology and petrophysical *** results indicate fair to good effective porosities,low shale volume,and high hydrocarbon saturation(>55%),signifying good reservoir potential in C interval of the Lower Goru Formation.

关键词： Sawan seismic Well-logs Goru formation Cretaceous Petrophysics

seismic displacement demand prediction in non-linear domain: Optimization of the N2 method

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Earthquake Engineering and Engineering Vibration 2019年第1期18卷 141-158页

作者： Lorenzo Diana Andrea Manno Pierino Lestuzzi EPFL – ENAC – IIC – IMAC DEIB Politecnico di Milano

In Europe, computation of displacement demand for seismic assessment of existing buildings is essentially based on a simplified formulation of the N2 method as prescribed by Eurocode 8(EC8). However, a lack of accuracy of the N2 method in certain conditions has been pointed out by several studies. This paper addresses the assessment of effectiveness of the N2 method in seismic displacement demand determination in non-linear domain. The objective of this work is to investigate the accuracy of the N2 method through comparison with displacement demands computed using non-linear timehistory analysis(NLTHA). Results show that the original N2 method may lead to overestimation or underestimation of displacement demand predictions. This may affect results of mechanical model-based assessment of seismic vulnerability at an urban scale. Hence, the second part of this paper addresses an improvement of the N2 method formula by empirical evaluation of NLTHA results based on EC8 ground-classes. This task is formulated as a mathematical programming problem in which coefficients are obtained by minimizing the overall discrepancy between NLTHA and modified formula results. Various settings of the mathematical programming problem have been solved using a global optimization metaheuristic. An extensive comparison between the original N2 method formulation and optimized formulae highlights benefits of the strategy.

关键词： N2 method seismic vulnerability assessment non-linear time-history analysis spectrum compatible recordings displacement demand determination optimization strength reduction factor

Preface to the special issue on seismic performance of underground structures: From experiments to analysis

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Earthquake Research Advances 2022年第4期2卷 1-2页

作者： Su Chen Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education Beijing University of TechnologyBeijing100124China

Urban underground structures, especially tunnels, subways, and pipeline systems, are all crucial parts of the infrastructure of modern society. By the end of 2021, China had opened rail transit operations in51 cities with a total mileage of 8708 km. Considering their importance for life safety and the economy, appropriate seismic design is of prior necessity.

关键词： underground seismic structures

seismic behavior of large-scale FRP–recycled aggregate concrete–steel columns with shear connectors

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Earthquake Engineering and Engineering Vibration 2019年第4期18卷 823-844页

作者： Zeng Lan Li Lijuan Yang Xianqian Liu Feng School of Civil and Transportation Engineering Guangdong University of Technology Guangzhou 510006 China MOE Key Laboratory of Disaster Forecast and Control in Engineering School of Mechanics and Construction Engineering Jinan University Guangzhou 510632 China Architectural Design and Research Institute of Guangdong Province Guangzhou 510000 China

The application of fi ber-reinforced polymer (FRP) composites for the development of high-performance composite structural systems has received signifi cant recent research attention. A composite of FRP–recycled aggregate concrete (RAC)–steel column (FRSC), consisting of an outer FRP tube, an inner steel tube and annular RAC fi lled between two tubes, is proposed herein to facilitate green disposal of demolished concrete and to improve the ductility of concrete columns for earthquake resistance. To better understand the seismic behavior of FRSCs, quasi-static tests of large-scale basalt FRSCs with shear connectors were conducted. The infl uence of the recycled coarse aggregate (RCA) replacement percentage, shear connectors and axial loading method on the lateral load and deformation capacity, energy dissipation and cumulative damage were analyzed to evaluate the seismic behavior of FRSCs. The test results show that FRSCs have good seismic behavior, which was evidenced by high lateral loads, excellent ductility and energy dissipation capacity, indicating RAC is applicable in FRSCs. Shear connectors can signifi cantly postpone the steel buckling and increase the lateral loads of FRSCs, but weaken the deformation capacity and energy dissipation performance.

关键词： recycled aggregate concrete (RAC) fi ber-reinforced polymer (FRP) FRP–RAC–steel column (FRSC) shear connector seismic behavior

seismic behavior of slab-structural wall junction of RC building

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Earthquake Engineering and Engineering Vibration 2019年第2期18卷 331-349页

作者： Snehal Kaushik Kaustubh Dasgupta Department of Civil Engineering Girijananda Chowdhury Institute of Management and Technology Department of Civil Engineering Indian Institute of Technology Guwahati

In high seismic zone regions, slender reinforced concrete structural walls are commonly used in high-rise buildings as a main lateral load resisting element. These walls are very effective in limiting the lateral drift of the building due to their large in-plane stiffness. However, the presence of floor slabs influences the behavior of the shear wall. Also, the current design requirements do not account for the presence of floor slabs. To understand the behavior of wall-slab junctions and address the shortcomings of the current design requirements, the influence of two parameters, namely(a) aspect ratio and(b) longitudinal reinforcement ratio on the behavior is studied numerically. It is observed that the presence of floor slabs at different levels tends to partition the wall into squat wall panels between two consecutive floors. The wall-slab junctions show large stress concentrations arising from the strut action in the squat panels. It is also observed that the floor slabs can get significantly damaged near the wall-slab junction for lower vertical reinforcement ratios in the wall. Thus, the current codeprescribed minimum reinforcement in shear walls is not sufficient and needs to be revisited at for improved performance.

关键词： RC wall building wall-slab junction seismic damage nonlinear static analysis