The perforated caisson structure is used in ports and waterways for its wave dissipation performance. This study modifies the traditional SPH method using Riemann solution CSPH to examine interaction between waves caissons. A comparative analysis of single- double-chambered caissons was conducted, considering various conditions. Results show that best occurs when perforation ratio front plate higher than back plate, chamber narrower chamber. Equal widths are beneficial adapting diverse...

The reinforced concrete beam-column joint exhibits different properties under dynamic loading when compared with that quasi-static loading, due to the effect of strain rate. However, majority previous studies are focused more on rate and reinforcement, but less joints. Based former considerations, seismic behavior 15 cruciform specimens subjected various rates is studied in this paper, aimed at attaining a better understanding In terms rates, failure mode, carrying capacity, stiffness...

Seawater sea sand concrete (SSC) can be applied in islands far away from the mainland. It is essential to clarify fracture behavior of SSC which related durability under ocean environment. Thus, present study primarily concerned with determination parameters SSC. Ordinary (OC) mixed by freshwater and river introduced for reference. Based on improved boundary effect model, size-independent tensile strength toughness are determined using experimental maximum loads three-point-bending beams....

The dynamic mechanical properties of 15 interior beam–column joint specimens subjected to various axial compression ratios are studied. Failure patterns joints and development cracks predicted by a softened strut-and-tie model binomial logistic regression model. According the Coulomb failure criterion Mohr's circle theory, calculate shear strength concrete is derived under state. In terms effects different strain rates ratios, carrying capacity, stiffness capacity degradation, energy...

The experiment study on the air-entrained concrete of 100 mm cubes under triaxial compression with different intermediate stress ratio<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:msub><mml:mrow><mml:mi>α</mml:mi></mml:mrow><mml:mrow><mml:mn fontstyle="italic">2</mml:mn></mml:mrow></mml:msub><mml:mo>=</mml:mo><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">σ</mml:mi></mml:mrow><mml:mrow><mml:mn...

The reuse of construction and demolition waste as a substitute for natural coarse aggregate in the production recycled concrete has been widely used. In order to study capillary water absorption performance waterborne-polyurethane-modified (WPUMRC), effects different curing systems, polymer-cement ratios, waterborne polyurethane addition methods on cumulative rate WPUMRC were analyzed, through MIP tests, micro modification mechanism was analyzed. results indicate that optimal system both DC...

Fiber Bragg Grating (FBG) sensors, with excellent properties, have been widely adopted to monitor the mechanical parameters in civil engineering recent years. On other hand, current study on fatigue performance of corroded prestressed steel strands is still limited, and this mainly because long-term strain conditions monitoring difficult conduct. Based aforementioned considerations, a total six beam specimens were fabricated study. The loading mode four points bending was form sinusoidal...

The strain rate of reinforced concrete (RC) structures stimulated by earthquake action has been generally recognized as in the range from <TEX>$10^{-4}/s$</TEX> to <TEX>$10^{-1}/s$</TEX>. Because both and steel reinforcement are rate-sensitive materials, RC beam-column joints bound behave differently under different rates. This paper describes an investigation seismic behavior which subjected large cyclic displacements on beam ends with three loading velocities, i.e., 0.4 mm/s, 4 mm/s 40...

A mild steel-friction self-centering damper with a hybrid energy-dissipation mechanism (MS-SCFD) was proposed, which consisted of steel, frictional, dual-energy-dissipation system and disc spring resetting system. The structure principle the MS-SCFD were explained in detail while restoring force model established. hysteretic behavior under low-cycle reciprocating loading modeled. Then, influence parameters such as preload, friction coefficient, soft-steel thickness on mechanical properties...

Previous experimental researches indicate that reinforced concrete beam-column joints play an important role in the mechanical properties of moment resisting frame structures, so as to require proper design. In order get better understanding joint performance, a rational model needs be developed. Based on former considerations, two typical models for calculating shear carrying capacity including inelastic and softened strut-and-tie are selected introduced analyzed. After examining...

The dynamic behavior of a PPSRC beam–column joint is related to constraint effect, strength deterioration and strain rate effect. Then, it can be assessed by bearing capacity, stiffness degradation, displacement ductility energy consumption. results show that the increased causes growth in ring stiffness, capacity consumption joints. However, influence shear span-to-depth ratio on mechanical properties joints more obvious than rate. Regardless rate, initial decrease as increases. Moreover,...