Results 31 to 40 of about 1,478,437 (287)

PERFORMANCE EVALUATION OF REINFORCED RETAINING WALLS WITH RIGID FACING

Jioshinsetikkusu Rombunshu (Geosynthetics Engineering Journal), 2008
従来，土留め壁構造物における健全性の評価は目視が主体であり，定量的な健全度評価法は確立していないのが実情である．比較的新しい工法である補強土壁工法に関しても同様である．そこで，土留め壁と剛な壁体を有する補強土壁構造物の健全度を評価するために，従来から橋梁下部構造物の健全度評価に適用されてきた衝撃振動試験法を参考に，小型起振器試験法を開発し，固有振動数の測定を実施した．まず，L型擁壁模型を用いて壁体に作用する土圧や支持力と固有振動数の関係を把握した後，実物大の剛な壁体を有する補強土壁模型に対して小型起振器試験を実施した．実験結果から，L型擁壁と補強土壁構造物の壁体の固有振動数により構造物の健全性を評価できることが分かった．
SHINODA, Masahiro, OOMURA, Hirokazu, HAYA, Hiroshi   +2 more
openaire   +2 more sources

Active Earth Pressure for Sloping Finite Soil While Accounting for Shear Stress and Curved Slip Surface

Geofluids, 2022
Calculating the earth pressure of the sloping soil having finite width behind the retaining wall is difficult for stability calculation. Thus, a novel method to calculate the active pressure of cohesionless sloping finite soil behind a retaining wall was
Weiwei Wang, Xinxi Liu, Weidong Hu, Hua Luo, Guanghui Wang   +4 more
doaj   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

FEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang, Hyo Been Jin, Chang Min Kim, So Yeon Lee, Hyun Ho Park   +4 more
wiley   +1 more source

White Matter and Perivascular Imaging Changes in Alzheimer's Disease and Cerebral Amyloid Angiopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Peak‐width of skeletonized mean diffusivity (PSMD) and diffusion tensor imaging–analysis along the perivascular space (DTI‐ALPS), reflecting white matter integrity and glymphatic function, are altered in Alzheimer's disease (AD).
Debina Laishram, Guangwei Du, Sangam Kanekar, Nandakumar Nagaraja   +3 more
wiley   +1 more source

Parkinson Disease Subtype Stability and Eventual Convergence

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Previous research identified distinct Parkinson disease (PD) clinical subtypes of “Motor Only,” “Psychiatric & Motor,” and “Cognitive & Motor” based on comprehensive, multidomain classification. Whether these subtypes reflect distinct trajectories or progressive disease stages remains unknown.
Laura M. Rosok, Christina N. Lessov‐Schlaggar, Abdulmunaim M. Eid, Erin R. Foster, Baijayanta Maiti, Hailee Domash, Helen Hwang, Richard J. Perrin, Paul T. Kotzbauer, Joel S. Perlmutter, Meghan C. Campbell   +10 more
wiley   +1 more source

Upper-bound limit analysis of seismic rotational stability of retaining walls with cohesive backfill considering embedment depth

Yantu gongcheng xuebao
For most researches on the seismic stability of retaining walls, the embedment depth of the wall is often assumed to be zero, resulting in the role of backfill in front of the wall being neglected.
LI Dongyang 1, MA Zhihong 1, LIU Jie 2, YIN Jili 3, SUN Boyan 3
doaj   +1 more source

Experimental study on failure mode and lateral earth pressure distribution of unsaturated sand behind retaining walls under active translation mode

Yantu gongcheng xuebao, 2023
Under the active translation mode, a series of laboratory model tests on the active earth pressure against rigid retaining walls with different wall roughnesses and water contents of backfill are carried out, in which the matric suction and earth ...
DENG Bo 1, 3, YANG Minghui 2, 3, ZHAO Minghua 3
doaj   +1 more source

Effects of Facing Rigidity on the Performance of Geosynthetic-Reinforced Soil Retaining Walls

Soils and Foundations, 1996
A numerical model incorporating a three-parameter dilatant nonlinear incrementally elastic soil model was used to analyze three well-controlled full-scale geosynthetic-reinforced soil (GRS) retaining wall tests. The three tests were conducted to examine the effects of facing rigidity and reinforcement length on the performance of GRS retaining walls ...
HELWANY, M.B., TATSUOKA, FUMIO, TATEYAMA, MASARU, KOJIMA, KENICHI   +3 more
openaire   +1 more source

Flexural Behavior of 3D‐Printed Porous Bouligand‐Structured Polymers: Influence of Pitch Angle and Porosity

Advanced Engineering Materials, EarlyView.
This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil, Edward D. McCarthy, Parvez Alam   +2 more
wiley   +1 more source

Economic Aseismic Design of Rigid Retaining Wall [PDF]

, 2004
Rigid retaining walls experience significant displacements during earthquakes. Several investigators have developed 1- D and 2-D models to predict displacements.
Puri, V. K., Wu, Yingwei, Prakash, Shamsher   +2 more
core   +1 more source