Results 31 to 40 of about 2,444 (197)

Time‐Variant Seismic Fragility of Reinforced Concrete Bridge Piers Considering Degradation Phenomena

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Aging and environmental exposure progressively deteriorate the physical and mechanical properties of construction materials, thereby affecting the safety and functionality of existing infrastructure. Corrosion of steel rebars in reinforced concrete structures is widely acknowledged as the most common and detrimental degradation phenomenon, as ...
Paolo Andrea Miglietta, Gianni Blasi, Daniele Perrone, Francesco Micelli, Maria Antonietta Aiello   +4 more
wiley   +1 more source

Optimization of Blasting‑Induced Roof Cutting Parameters in Key Stratum and Its Application in Gob‑Side Entry Retention Technology

Energy Science &Engineering, EarlyView.
This study addresses hard roof coal seam conditions by optimizing key stratum blasting‐cutting parameters through theoretical analysis, numerical simulation, and field tests. It proposes calculation methods for blast hole spacing and delay timing based on stress wave theory, controlling roadway deformation within 35 mm, thereby enhancing resource ...
Qiong Liu, Duanxiang Fu, Hongbin Li
wiley   +1 more source

Static Bearing Capacity Investigation of a Novel Prefabricated Light-Steel Beam–Column Connection

Applied Sciences, 2022
In this study, a novel prefabricated light-steel beam–column connection consisting of a thin-walled rectangular hollow section column and two cold-formed steel truss beams is proposed and investigated by carrying out experimental tests.
Xiaoping Wang, Fuyong Liu, Xiangxue Li, Tao Li, Xiaoqin Xu, Zhonghe Shui, Huancheng Wu   +6 more
doaj   +1 more source

Non‐Physical Barrier Design and Environmental Conditions Alter Routing and Survival of Juvenile Chinook Salmon (Oncorhynchus tshawytscha) in the Sacramento‐San Joaquin River Delta

River Research and Applications, EarlyView.
ABSTRACT Pacific salmon face substantial challenges when migrating through anthropogenically modified river systems, such as the Sacramento‐San Joaquin River Delta (the Delta). Non‐physical behavioral barriers, such as the bioacoustic fish fence (BAFF), are one potential solution for guiding fish away from hazards without obstructing water flow ...
Maggie Raboin, Summer M. Burdick, Russell W. Perry   +2 more
wiley   +1 more source

Research on the load transfer performance of large-span steel truss cable-stayed bridge structures

Advances in Mechanical Engineering
Since the wave is accompanied by the transfer of energy in the process of transmission, and the energy density at the node directly affects the bearing capacity and service performance of the steel truss cable-stayed bridge members and joints, this paper
Lixiong Gu, Cong Liu, Niujing Ma, Jianyi Ji   +3 more
doaj   +1 more source

Mechanical behavior of concrete-filled rectangular steel tubular composite truss bridge in the negative moment region

Journal of Traffic and Transportation Engineering (English ed. Online), 2021
Concrete-filled rectangular steel tubular (CFRST) composite truss bridge is a new type of structure composed of a CFRST truss and concrete deck slab.
Beichen Pu, Xuhong Zhou, Yongjian Liu, Bin Liu, Lei Jiang   +4 more
doaj   +1 more source

REINFORCEMENT OF STEEL TRUSS BY WELDING

Urban construction and architecture, 2017
The paper presents experimentally obtained information about the features of the steel truss, reinforced under load by increasing the cross-section of compressed rods by welding. The tests were conducted on the bench using existing tooling. Two crossbeams and two panels of 24 m span corner truss upper chord with parallel chords were exposed to ...
openaire   +1 more source

Assessing the fire resistance of damaged reinforced concrete frames: A comparative study between 2D and 3D frames

Structural Concrete, EarlyView.
Abstract Post‐earthquake fires pose a significant threat to urban environments, with potentially catastrophic consequences for buildings and infrastructure. To enhance understanding and mitigate these risks, this study conducts a comparative analysis of post‐earthquake fire (PEF) in two‐dimensional (2D) and three‐dimensional (3D) reinforced concrete ...
Hugo Vitorino, Paulo Vila Real, Carlos Couto, Hugo Rodrigues   +3 more
wiley   +1 more source

Flexural Capacity of the Concrete Beams Reinforced by Steel Truss System

MATEC Web of Conferences, 2017
Reinforced concrete beam is normally reinforced by steel bars to sustain tensile forces occurring due to flexural response, and vertical steel reinforcement to sustain shear stresses.
Djamaluddin Rudy, Frans Pieter Lourens, Irmawati Rita   +2 more
doaj   +1 more source

Evaluations of the effectiveness of the near‐surface mounted steel materials in strengthening short RC wall‐like columns with openings

Structural Concrete, EarlyView.
Abstract In practice, reinforced concrete (RC) wall‐like columns often have openings to facilitate building services, which creates stress concentrations around the opening, resulting in the weakening of their load‐carrying capacity. This study proposes innovative strengthening methods using near‐surface mounted (NSM) incorporating steel materials to ...
Ahmed Hamoda, Mizan Ahmed, Mohamed Ghalla, Ahmad G. Saad, Aref A. Abadel   +4 more
wiley   +1 more source