Design and behavior of super-long span cable-stayed bridge with CFRP cables and UHPC members

Ren, Liang; Fang, Zhi; Wang, Kai

doi:10.1016/j.compositesb.2018.11.060

Cited by 64 publications

(11 citation statements)

References 28 publications

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“…UHPC (Ultra-high performance concrete), as a new type of cement-based material, is designed based on the principle of the closest packing between particles of each component with a very low water-to-binder ratio (w/b < 0.2) and a certain amount of reinforcing fibers [1,2,3,4]. Therefore, UHPC cement-based materials show great potential in applications which satisfy the requirements of structural engineering at a higher height, larger span, and heavier load [5,6,7,8,9,10,11]. Along with its excellent mechanical properties and durability, a strong continuous shrinkage deformation of the UHPC matrix can negatively affect its stability and reliability during the practical service life.…”

Section: Introductionmentioning

confidence: 99%

Effects of Pumice-Based Porous Material on Hydration Characteristics and Persistent Shrinkage of Ultra-High Performance Concrete (UHPC)

Liu

Shui

et al. 2018

Materials

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In this paper, two kinds of pumice particles with different diameters and water absorption rates are employed to substitute the corresponding size of river sands by volume fraction, and their effects on the hydration characteristics and persistent shrinkage of Ultra-High Performance Concrete (UHPC) are investigated. The obtained experimental results show that adopting a low dosage of 0.6–1.25 mm saturated pumice as the internal curing agent in UHPC can effectively retract the persistent shrinkage deformation of concrete without a decrease of strength. Heat flow calorimetry results demonstrate that the additional water has a retarding effect and promotes the hydration process. X-ray Diffraction (XRD) and Differential Thermal Gravimetry (DTG) are utilized to quantify the Ca(OH)2 content in the hardened paste, which can confirm that the external moisture could accelerate the early cement hydration and secondary hydration of active mineral admixtures. The Ca/Si ratio of C–S–H calculated by the Energy Dispersive Spectrometer (EDS) reveals that the incorporation of wet pumice can transform the composition and structure of hydration products in its effective area.

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Section: Introductionmentioning

confidence: 99%

Effects of Pumice-Based Porous Material on Hydration Characteristics and Persistent Shrinkage of Ultra-High Performance Concrete (UHPC)

Liu

Shui

et al. 2018

Materials

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“…In particular, silica fume (SF) is one of the most effective SCMs in improving the durability and mechanical performance of cementitious materials. Recently, the increasing demand for long-span bridges and high-rise buildings has resulted in an increase in the research in this area [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. Perraton et al experimentally demonstrated that the chloride ion diffusion in concrete significantly decreased as the amount of SF added increased [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Correlation between the Compressive Strength and Ultrasonic Pulse Velocity of Cement Mortars Blended with Silica Fume: An Analysis of Microstructure and Hydration Kinetics

Hong

Choi

et al. 2021

Materials

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The effect of the replacement rate of silica fume (SF) on the correlation between the compressive strength and ultrasonic pulse velocity (UPV) of cement mortar was experimentally analyzed. Specimens were fabricated with different replacement rates of SF, the compressive strength and UPV were measured, and isothermal calorimetry and mercury intrusion porosimetry tests were conducted to analyze the effects of replacement on the hydration kinetics and microstructures on these properties. Field emission scanning electron microscopy analysis was performed to observe SF particles and microstructure. The substitution of SF changed the cement mortar’s hydration kinetics and microstructures, resulting in different strengths and UPVs depending on the replacement rate. The compressive strength and UPV for cement mortars blended with SF also showed a different exponential relationship depending on the SF replacement rate.

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“…Moreover, the deterioration of bridge durability due to corrosion of conventional steel cables is a major cause of bridge collapses and other devastating accidents. Recently, CFRP cable has been proposed to replace steel cable and it was used in practical engineering [15,16]. Quantities of researches on the CFRP cable have been conducted.…”

Section: Introductionmentioning

confidence: 99%

Non-planar Dynamics of a CFRP Cable with an External 1/3-order Subharmonic Resonance

Long¹,

Kang²

2021

Preprint

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Based on the non-planar vibration equations of a cable made of carbon fiber reinforced polymer (CFRP), the nonlinear behaviors of the cable are studied. The one-to-one internal resonance of the lowest in-plane and out-of-plane modes of the cable is investigated. Three different cases, namely, 1/3-order subharmonic resonance of the in-plane mode, 1/3-order subharmonic resonance of the out-of-plane mode and 1/3-order subharmonic resonance of both of the in-plane and out-of-plane modes are examined. The vibration equations of the cable are discretized by using Galerkin’s method. In this way, the ordinary differential equations (ODEs) are obtained. The multiple time scale method is employed to solve the ODEs and the corresponding modulation equations are derived. Then, the response curves of the cable are obtained by using Newton-Raphson method and pseudo arclength algorithm. Meanwhile, the response curves of the CFRP cable are compared with those of the steel cable to explore the differences in nonlinear behaviors of the cables made of different materials. The results show that the CFRP cable has potential advantages over the steel cable from a nonlinear point of view.

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Design and behavior of super-long span cable-stayed bridge with CFRP cables and UHPC members

Cited by 64 publications

References 28 publications

Effects of Pumice-Based Porous Material on Hydration Characteristics and Persistent Shrinkage of Ultra-High Performance Concrete (UHPC)

Effects of Pumice-Based Porous Material on Hydration Characteristics and Persistent Shrinkage of Ultra-High Performance Concrete (UHPC)

Correlation between the Compressive Strength and Ultrasonic Pulse Velocity of Cement Mortars Blended with Silica Fume: An Analysis of Microstructure and Hydration Kinetics

Non-planar Dynamics of a CFRP Cable with an External 1/3-order Subharmonic Resonance

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