Article
Engineering, Geological
F. H. M. Portelinha, M. C. Santos, M. M. Futai
Summary: The laboratory testing simulated the mechanisms of a geosynthetic-reinforced layer to assess the impact of rainwater infiltration on reinforcement loads and strains in MSE walls. Results showed that infiltration led to increases in strains and tensile loads mobilized by reinforcements, which depended on global suction, geosynthetic stiffness, and hydraulic properties. Additionally, water content increases at soil-geotextile interfaces also had a significant effect on mobilized loads.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Green & Sustainable Science & Technology
Fernando H. M. Portelinha, Joao M. H. Goulart, Jose Orlando Avesani Neto
Summary: Sustainable solutions using geosynthetic-reinforced soil walls with reduced volume of geosynthetic reinforcements have been achieved. The deformation measurements of four instrumented walls with different reinforcement arrangements were compared. Short reinforcements at deeper layers resulted in higher mobilized loads and increased wall deformation, while rigid reinforcements at lower layers reduced facing displacements. The adoption of heterogeneous reinforcement layers significantly affected the distribution patterns of facing displacements, reinforcement-mobilized loads, and strains along the wall height.
Article
Engineering, Geological
Fei-fan Ren, Huan Xu, Yan-jun Ji, Qiang-qiang Huang, Xun Tian
Summary: Based on large-scale model tests, it was found that improving the relative density of SMSE walls and adopting sandwich connections behind the walls can effectively control their deformation. The horizontal earth pressure against the walls shows a K-shaped distribution, with greater vertical earth pressure in the upper part and less in the lower part. It is recommended to use sandwich connections in engineering practice for better performance and stability.
GEOTEXTILES AND GEOMEMBRANES
(2022)
Article
Engineering, Geological
Rajarshi Pramanik, Sougata Mukherjee, G. L. Sivakumar Babu
Summary: An artificial neural network-based response surface method is proposed to demonstrate the probabilistic performance of geosynthetic reinforced soil walls backfilled with cohesionless soil. The method utilizes uniform design to achieve better accuracy in predicting wall reliability. Two GRS walls are assessed probabilistically using this method, which also analyzes the effect of variability in different input variables on the wall's reliability. The study shows that the soil friction angle is the most sensitive parameter affecting the overall stability of the wall.
GEORISK-ASSESSMENT AND MANAGEMENT OF RISK FOR ENGINEERED SYSTEMS AND GEOHAZARDS
(2023)
Article
Energy & Fuels
X. A. Wang, Dalin Zhang, Mingjun Wang, Yapeng Liu, Lei Zhou, Shibao Wang, Yu Liang, Wenxi Tian, Suizheng Qiu, G. H. Su
Summary: In this paper, a hexahedron meshing strategy based on the Radial Basis Function (RBF) theory is developed to simulate the thermal hydraulic characteristics of wire-wrapped fuel assemblies, achieving good agreement between simulation results and experimental results.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Construction & Building Technology
Xuansheng Cheng, Junliang Hong, De Li
Summary: The study aimed to simplify calculation rule for underpinning reinforcement model considering the foundation of a self-bearing wall. The results were compared using simplified Timoshenko method and finite element analysis, verifying the relationship between the simplified calculation and the real model results.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Wan Zhang, Jianfeng Chen
Summary: This paper presents an improved earth pressure method that considers the capacity of a wall toe to carry an earth load to predict the connection loads of GRS segmental walls. A response surface model (RSM) of the lateral earth pressure coefficient replaces the Coulomb active earth pressure coefficient in this method. The proposed RSM method shows better agreement with the measurements than the stiffness method and the earth pressure method.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Geological
Mario E. Rodriguez
Summary: Multi-story housing buildings in high-seismic-risk regions of Latin America are constructed with thin reinforced concrete walls as the primary earthquake-resistant structural system for faster construction. However, these thin walls are prone to lateral instability and failure under earthquake loading due to low ductility and energy deformation capacity. Studies based on compression-tension cycles and lateral loading tests of thin RC walls are used to better understand their potential seismic behavior and drift capacities.
BULLETIN OF EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Geological
Antonio Alberto S. Correia, Maria Isabel Moita Pinto, Katia D. T. Monteiro
Summary: This paper presents an accurate prediction method for the deformation of retaining walls reinforced with geosynthetics using laboratory-scale physical models. The proposed method is shown to provide reliable results when compared with physical measurements.
INTERNATIONAL JOURNAL OF PHYSICAL MODELLING IN GEOTECHNICS
(2022)
Article
Engineering, Civil
Wanraplang Warlarpih, Comingstarful Marthong
Summary: Openings in unreinforced masonry buildings weaken their shear performance, but strengthening with welded wire mesh significantly enhances the shear strength.
STRUCTURAL ENGINEERING AND MECHANICS
(2023)
Article
Engineering, Civil
Wen Zhong, Yongsheng Song, Youliang Ding, Zhao Fang
Summary: This study proposes a simplified fatigue life evaluation method that quantitatively considers welding residual stress relaxation. Based on residual stress tests and numerical simulation, the initial welding residual stress distribution model is established. The simplified mechanical model of the coupled effect and the law of residual stress relaxation are established via stress analysis at the weld toe section. A stress time-history simplification method considering welding residual stress relaxation is proposed. Using the proposed method, the fatigue life of welding joints of the Jiangyin Yangtze River Highway Bridge is calculated, providing a theoretical basis for fatigue analysis and lifetime assessment technology of large span highway steel box girder bridges.
Article
Mechanics
Mao Cristian Pinto-Cruz
Summary: This paper presents an analytical procedure for the static and dynamic analysis of coupled shear walls using a continuous model. The proposed analytical solutions show excellent correspondence with the finite element method, providing accurate and reliable results at a low computational cost.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Engineering, Manufacturing
Wen Dong, Xavier A. Jimenez, Albert C. To
Summary: As an AM process, wire-arc DED is known for printing large metal parts. However, heat accumulation during deposition can lead to residual stress and distortion. This study extends the use of the MIS method to wire-arc DED and introduces a temperature-dependent approach to improve accuracy. Experimental validation shows that the new method significantly reduces prediction errors for stress and distortion in large-scale parts.
ADDITIVE MANUFACTURING
(2023)
Article
Construction & Building Technology
Ali Raji, Davood Mostofinejad, Mohammad Reza Eftekhar
Summary: This study presents an innovative method of strengthening masonry walls using high tensile strength steel parallel wires. The findings demonstrate that the specimens reinforced by this method show the best performance in terms of load-bearing capacity and energy absorption. Additionally, the grooving method enhances the strength of the walls by transferring the tensile stress and changing the failure mechanism.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Civil
Xiao Li, Xianxiang Zhou, Lan Xiao, Ziye Liu, Zhongyi Zhou
Summary: Through experiments, it was found that using the steel wire rope-polymer mortar surface layer cross-strip method can enhance the shear bearing capacity and stiffness of aerated concrete block walls. However, it has limited effect on improving the ductility and energy-dissipating capacity.