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221
Enhancing Seismic Performance of Steel-Plated Stress-Ribbon Bridge with Tuned Mass Dampers: A Finite-Element Study
Published 2023-01-01“…Furthermore, a torsional TMD effectively reduces both the torsion of stress ribbons and the pier forces. As a recommendation, the combination of a single vertical displacement TMD and a torsional TMD can be considered the most appropriate scheme for earthquake response control. …”
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222
Method for Predicting Barge Impact Force Based on Nonlinear Spring Stiffness
Published 2022-01-01“…The proposed method in this paper does not consider the pier stiffness; hence, it can be combined with NSS to quickly estimate the impact force, which can provide a design basis for the impact force in ship-bridge collision design. …”
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223
Layout Optimization of Rail Expansion Joint on Long-Span Cable-Stayed Bridge for High-Speed Railway
Published 2020-01-01“…Switch rails of REJ are set up on the main beam, stock rails are laid on the simply supported beams and crossing over beam joints, and several-meter long small resistance fasteners need to be laid on the sides of stock rails to reduce the fixed pier longitudinal force near the main beam. The range of REJ laid on cable-stayed bridge is mainly determined by temperature, rail breaking, and seismic condition; the bending and braking loads have little influence on it. …”
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224
Experimental Study on Influence of Microexpansive Concrete Self-Stress on Performance of Steel Pipe Concrete
Published 2021-01-01“…The mechanical properties of the HSTCMC short columns were greatly improved compared to the control RC pier. The yield and ultimate strength of the HSTCMC short columns can be enhanced to 8.9% and 14.6%, and with the content of expansive agent that increased from 8% to 12%. …”
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225
Study on scour simulation and boundary condition conversion technology for a shallow foundation bridge
Published 2025-02-01“…To prevent and mitigate scouring risks, this paper investigates the riverbed scouring characteristics of shallow foundation bridges under different hydrological conditions.The study found that under high water levels and flow velocities, scour depth significantly increased.Under extreme hydrological conditions, a horseshoe vortex forms at the base of the front end of the bridge pier, causing scour pits on both sides of the upstream face of the foundation, which is the main cause of foundation voids that first appear at 2580 s with a maximum scour depth of -2.51 m and a void area of 0.5%, continuing to increase over time.Based on simulated scouring data, this study proposes a method for converting boundary conditions from a scouring model to a mechanical model. …”
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226
Fixed Monthly versus Less Frequent Ranibizumab Dosing and Predictors of Visual Response in Exudative Age-Related Macular Degeneration
Published 2012-01-01“…Results from 1824 ranibizumab-treated patients receiving fixed monthly, quarterly, or as-needed dosing after three monthly loading doses in four phase III/IIIb trials (ANCHOR, MARINA, PIER, and SAILOR) were analyzed. Results. At month 3, 14.9% to 29.4% of patients had gained ≥15 letters. …”
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227
Application of GA-BP Neural Network Optimized by Grey Verhulst Model around Settlement Prediction of Foundation Pit
Published 2021-01-01“…For the application of the methodology, the settlement monitoring point of D4, which is near the bridge pier of the highway, is studied in this paper. The predicted values of the BP neural network, GA-BP neural network, BP neural network optimized by the grey Verhulst model, and GA-BP neural network optimized by the grey Verhulst model are detailed compared with the measured values. …”
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228
Collaborative stress of concrete-filled steel tube tied-arch beam-column support based on the double-layer elastic foundation beam theory
Published 2025-01-01“…Conversely, load increments at both mid-span and pier locations of the Bailey beam were relatively small. …”
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229
Use of multispecies (Nannochloropsis oceanica, Artemia franciscana, and Arbacia nigra) approach to assess the quality of marine water from Callao Bay, Peru
Published 2025-01-01“…Using a multispecies approach (Nannochloropsis oceanica, Artemia franciscana, and Arbacia nigra), bioassays evaluated marine water quality from Callao Bay in Peru across four sampling areas (Naval School: PA1, Peruvian Marine Institute: PA2, Callao Pier: PA3, and San Lorenzo Island: PA4). These species, with varying sizes and morphologies, are relevant to marine systems and ideal for multispecies toxicity testing, contributing to broader environmental impact discussions. …”
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230
Construction Control Technology and Monitoring Analysis of Walking Incremental Launching Construction of Small-Curvature Steel Box Girder Bridges Across Expressways
Published 2025-01-01“…The stress conditions of the incremental launching pier and the settlement of the concrete substructure are also studied, and we analyze the stress and displacement characteristics. …”
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231
Le site antique de la clinique des Dames Blanches à Tours (Indre-et-Loire) : aménagements d’un embarcadère romain sur la Loire et évolution du trait de rive
Published 2020-12-01“…The fourth state of the pier contrasts strongly with the preceding three, as it no longer corresponds to a simple access ramp to the river. …”
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232
L’utilisation du bois dans les aménagements portuaires antiques de Narbonne/Narbo Martius (Aude)
Published 2020-12-01“…Downstream, a significant change in the construction pattern is observed with the installation of a well-built pier on the lagoon side, while the river banks are developed with riprap based on a network of piles and planks. …”
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233
Effect of nonlinearity of restrainer and supports on the elasto-plastic seismic response of continuous girder bridge
Published 2014-09-01“…During an earthquake, the nonlinearity of the bridge structure mainly occurs at the supports, bridge piers and restrainers. When entering nonlinear stage, members of the bridge structure affect the elasto-plastic seismic response of the whole structure to a certain extent; for multi-span continuous bridges, longitudinal restrainers can be installed on the movable piers to optimise the distribution of seismic force and enable the movable piers to bear a certain amount of seismic effect. …”
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234
Effect of nonlinearity of restrainer and supports on the elasto-plastic seismic response of continuous girder bridge
Published 2014-10-01“…During an earthquake, the nonlinearity of the bridge structure mainly occurs at the supports, bridge piers and restrainers. When entering nonlinear stage, members of the bridge structure affect the elasto-plastic seismic response of the whole structure to a certain extent; for multi-span continuous bridges, longitudinal restrainers can be installed on the movable piers to optimise the distribution of seismic force and enable the movable piers to bear a certain amount of seismic effect. …”
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235
Research on Flood Impact and River Regime of Skew Bridges Crossing River Bend Based on FVM Method
Published 2021-01-01“…Based on finite volume method (FVM) and two-dimension unstructured grid,taking a skew bridge crossing the river bend as the research object,this paper builds a hydrodynamic model of the upstream and downstream of the bridge,and simulates and analyzes the impact of bridge construction on the upstream and downstream water level,flow velocity and river regime under different frequency floods.The results show that:Due to the water blocking action of the piers,the upstream water level of the bridge increases,the flow velocity between the piers increases,and the flow velocity of water face and back face of the piers decreases.As there is a angle between piers of the skew bridge and the natural river course,the water level on the left bank in the downstream rises and the right bank in the downstream drops.The flow velocity and sediment-carrying capacity on the left bank increases compared to those before the project,while those on the right bank decreases,and the affected area was concentrated in the river section near the bridge location.The river section where the bridge is located is bent.The bridge can play a positive role in preventing the siltation of convex bank (left bank) and the scour of concave bank (right bank) downstream the bridge.The research results can provide reference for the design of skew bridge.…”
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236
L’aqueduc du Gier : étude des ponts-siphons du Garon à Brignais et Chaponost (Rhône) et de Beaunant à Sainte-Foy-lès-Lyon (Métropole de Lyon)
Published 2023-12-01“…The construction technique is the same for both the original piers and the backfill. The same materials are used. …”
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237
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Determination of the Response Spectra of the Superstructure of Length l=3X63.0 m
Published 2024-06-01“…During a seismic impact, the main emphasis is placed on the damage to bridge piers, which were isolated from the horizontal earthquake detector. …”
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239
Earthquake-Induced Domino-Type Progressive Collapse in Regular, Semiregular, and Irregular Bridges
Published 2019-01-01“…Also, it is concluded that, type of the deck, height of the piers, and ground slope have a great effect on the progressive collapse procedure of both regular and irregular bridges with voided slab deck.…”
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240
A New Approach for Probabilistic Risk Assessment of Ship Collision with Riverside Bridges
Published 2020-01-01“…The configuration of riverside bridges, such as the spatial distribution, wading status, and ship accessibility of piers, is generally different from river-crossing bridges. …”
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