Results 61 to 70 of about 11,283 (266)

Constitutive Behavior of Rocks During the Seismic Cycle

AGU Advances, 2023
AbstractEstablishing a constitutive law for fault friction is a crucial objective of earthquake science. However, the complex frictional behavior of natural and synthetic gouges in laboratory experiments eludes explanations. Here, we present a constitutive framework that elucidates the rate, state, and temperature dependence of fault friction under the
openaire   +3 more sources

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

Deep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei, Mojtaba D. fallahi, Ali Uromeihy, Mohammad R. Nikoodel, Mohammad Fathollahy   +4 more
wiley   +1 more source

Methodologies for Assessing Bridge Performance Under Seismic Action

Romanian Journal of Transport Infrastructure
This paper analyses the seismic response of four continuous precast prestressed concrete girder bridges, with total lengths ranging from 80 m to 200 m, representative of Romanian road infrastructure.
Vlad-Mihai Șimon, Ionuț-Radu Răcănel, Daniel Urdăreanu Vlad   +2 more
doaj   +1 more source

Study on behavior of a small structure with sliding seismic isolation system and its numerical model

Nihon Kikai Gakkai ronbunshu
In order to understand rocking vibration characteristics of a small structure installed on the seismic isolation system using sliding mechanical system under various condition, we have performed vibration test and proposed a numerical analysis model ...
Yukinaga OGASAWARA, Katsumi KURITA, Shigeru AOKI   +2 more
doaj   +1 more source

The High-Speed Railway Bridges Under Vehicle Moving Load And Near Fault Seismic Ground Motions – Review.

Journal of Building Materials and Structures, 2021
All-time needs of maintenance of high-speed train system and its infrastructure safety are must all over the world. Nowadays, for the smooth running of HSR trains, most of the country depends on the HSR bridge structures, but there is still a lack of ...
Amudhan Vijayakumar, Hui Qian
doaj  

Gaborlet‐guided sparse filtering: A novel intelligent method for lithology identification by vibration signals while drilling

Deep Underground Science and Engineering, EarlyView.
The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao, Danqi Zhang, Zhenqi Song, Jinrui Wang, Qi Wang, Heqing Liu   +5 more
wiley   +1 more source

Cyclic test and parametric analysis of steel shear wall made of two inclined slotted infill plates

Nuclear Engineering and Technology
This study investigates the seismic performance of a steel shear wall (SSW) made of two inclined slotted infill plates. Despite widespread use of SSWs, conventional steel shear walls (C-SSWs) face challenges such as limited energy dissipation and ...
Mohammad Akram Faizy, Seyed Bahram Beheshti-Aval   +1 more
doaj   +1 more source

Effects of backfill on seismic behavior of rectangular tanks

Ocean Engineering, 2011
Abstract The reliability and/or stability of the lifeline structures against failure under seismic loads are of critical concern, and must be studied carefully. Therefore, the main objective of this paper is to demonstrate the commonly encountered backfill effects on the dynamic response of rectangular tanks.
Livaoglu, Ramazan, Cakir, Tufan, Dogangun, Adem, Aytekin, Mustafa   +3 more
openaire   +3 more sources

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

Deep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source

Influence of Column–Base Connections on Seismic Behavior of Single-Story Steel Buildings

Buildings
This study focuses on assessing the seismic performance of existing single-story steel buildings used as industrial buildings. This research aims to provide a systematic procedure for evaluating the seismic response of a single-story strategic building ...
Alessandro Prota, Roberto Tartaglia, Raffaele Landolfo   +2 more
doaj   +1 more source