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Parametric Study on Self-centering Precast Concrete Frames with Hysteretic Dampers

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2021; 65 (3)

The self-centering precast concrete frame structure combines the advantages of industrialization and low earthquake damage, and its energy dissipation......

Seismic Fragility Analysis of Base Isolated Structure Subjected to Near-fault Ground Motions

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2021; 65 (3)

In order to better evaluate the performance of the base isolated structure under the near-fault earthquakes, this paper takes into consideration an ex......

Damage Effect of Terrorist Attack Explosion-induced Shock Wave in a Double-deck Island Platform Metro Station

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2021; 65 (1)

The objective of this research was to reasonably assess the damage to people and station structures caused by terrorist attack explosion at metro stat......

The Impact of Extended Heat Exposure on Rapid Sulphoaluminate Cement Concrete Up To 120 degrees C

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2021; 65 (2)

This study examined the stability of rapid sulphoaluminate cement concrete (R-SACC) when exposed to heat for extended periods of time. The physicochem......

Study on Optimum Free-face Condition of Cutting Hard Rock with Tunnel Boring Machine Hob

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2021; 65 (2)

To explore the rock-breaking characteristics of cutting hard rock under free-face condition by tunnel boring machine (TBM) hob and obtain the optimum ......

Investigation of the Permeability of Soil-rock Mixtures Using Lattice Boltzmann Simulations

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2021; 65 (2)

Based on the discrete element method and the proposed virtual slicing technique for three-dimensional discrete element model, random pore-structural m......

A Comprehensive Research of the Air-void Defect of Concrete-filled Steel Tube

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2021; 65 (2)

Welded spiral steel tubes are adapted for use in a majority of the large-diameter concrete-filled steel tube (CFST) arch bridges due to technical as w......

Effectiveness of Calcium Carbonate Whisker in Cementitious Composites

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2020; 64 (1)

Cementitious composites are porous material having complex structure system consist of hydration products, un-hydrated cement particles and pore solut......

Analytical Study on the Effective Flange Width for T-shaped Shear Walls

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2020; 64 (1)

This study was organized to derive simplified expressions to estimate the effective flange width for T-shaped shear walls at different loading stages.......

Effect of Wet-dry Cycles on Disintegration Characteristics of Clay-bearing Sandstone with UF Cracks

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2020; 64 (1)

UF cracks in rock masses commonly occur due to the unloading effect, which constantly happens after the variation of in-situ stress field or rock exca......

Experimental Study of Cohesive Embankment Dam Breach Formation due to Overtopping

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2020; 64 (1)

The recurrent floods in recent decades have imposed a challenge of embankment dam breaching, which needs great attention through improved design metho......

Cutting Characteristics and Layout of Pre-cutting Machine Cutter

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2020; 64 (1)

The pre-cutting machine is becoming valued due to its ability to effectively prevent surface settlement and reduce vibration in tunnel construction. T......

Uniaxial Compression Fractal Damage Constitutive Model of Rock Subjected to Freezing and Thawing

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2020; 64 (2)

Mechanical properties of the rock in the cold regions are often affected by freeze-thaw cycles and loads. It is of great theoretical significance and ......

Comparison of Evaluation Tests for Compressive Strength of Structural Concrete

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2020; 64 (2)

The concrete strength of existing structures is an important index in the aspects of safety insurance, evaluation, and strengthening of existing struc......

Study on the Mechanical Cumulative Damage Model of Slope Fault Fracture Zone under the Cumulative Effect of Blasting Vibration

期刊: PERIODICA POLYTECHNICA-CIVIL ENGINEERING, 2020; 64 (3)

As for the slope with fault fracture zone, the fault fracture zone is the main sliding surface, whose shear strength parameter is the main calculation......

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