Time‐dependent analysis during construction of concrete tube for tower high‐rise building

Jiang, Wei; Gong, Jian; Schutter, Geert De; Huang, Y.; Yuan, Yong

doi:10.1002/suco.201200011

Cited by 10 publications

(11 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When concrete is subjected to a sustained load, time‐dependent strains due to creep and shrinkage develop with a considerable impact on the performance of the structural member. The importance of creep and shrinkage in reinforced concrete beams is well recognized . Over its lifetime, the local strain within a cross section can attain values several times larger than the initial elastic strain, and this can cause undesired serviceability problems in structural members where deflections or crack widths are excessive .…”

Section: Introductionmentioning

confidence: 99%

Long‐term data of reinforced concrete beams subjected to high sustained loads and simplified prediction method

Reybrouck

Criel

Mullem

et al. 2017

Structural Concrete

View full text Add to dashboard Cite

In 1967-1985, a research campaign comprising a unique set of long-term experimental data on concrete beams was conducted in joint collaboration with four Belgian research institutes to determine the influence of creep and shrinkage on the long-term behavior of reinforced concrete members. The main aim of the research campaign was the determination of the long-term behavior of cracking and deformations subjected to permanent loads considering the influence of the magnitude of the loads and various reinforcement ratios. The objective of this article is twofold: to provide an overview of the measured data of the reinforced beams of the research campaign, which has never been published before, and to propose a simplified calculation method based on available models in literature that can predict the available measurement data. A simplified calculation model is proposed, which accounts for nonlinear creep strains due to high stresses, shrinkage, aging, and cracking in reinforced concrete beams. This numerical method is based on a cross-sectional analysis formulated using the layered Euler-Bernoulli beam theory, allowing fast and accurate predictions of strains, stresses, and deflections as a function of time based on fib Model Code 2010 and EN1992-1-1. The measurements of the beams subjected to high permanent loads during a time period of 4 years are compared to the results evaluated with the proposed simplified calculation model. The results show that the proposed simplified calculation method based on the current models of EN1992-1-1 and fib Model Code 2010 can predict the long-term behavior of reinforced concrete beams subjected to high loads in good agreement with the measurements.

show abstract

Section: Introductionmentioning

confidence: 99%

Long‐term data of reinforced concrete beams subjected to high sustained loads and simplified prediction method

Reybrouck

Criel

Mullem

et al. 2017

Structural Concrete

View full text Add to dashboard Cite

show abstract

“…Although the reliability and accuracy of a CWSN with VWGs have been validated through various experimental tests and field applications [12][13][14], the costs and workloads of installing the cables and of the continuous maintenance still remain residual issues.…”

Section: Wired Sensor Networkmentioning

confidence: 99%

A Comparative Field Monitoring of Column Shortenings in Tall Buildings Using Wireless and Wired Sensor Network Systems

Lee¹,

Kim²,

2016

Journal of Sensors

View full text Add to dashboard Cite

A comparative field measurement for column shortening of tall buildings is presented in this study, with a focus on the reliability and stability of a wireless sensor network. A wireless sensor network was used for monitoring the column shortenings of a 58-story building under construction. The wireless sensor network, which was composed of sensor and master nodes, employed the ultra-high-frequency band and CDMA communication methods. To evaluate the reliability and stability of the wireless sensor network system, the column shortenings were also measured using a conventional wired monitoring system. Two vibration wire gauges were installed in each of the selected 7 columns and 3 walls. Measurements for selected columns and walls were collected for 270 days after casting of the concrete. The results measured by the wireless sensor network were compared with the results of the conventional method. The strains and column shortenings measured using both methods showed good agreement for all members. It was verified that the column shortenings of tall buildings could be monitored using the wireless sensor network system with its reliability and stability.

show abstract

“…[19] Embedded vibrating wire strain gages EM-5 have been used to monitor the vertical deformation. Monitoring sections have been installed at the 6th, 18th, 30th, and 42nd floor in the mega-structure column and at the 12th, 27th, 42nd, and 60th floor in the reinforced concrete core.…”

Section: Journal Of Sustainable Cement-based Materialsmentioning

confidence: 99%

Degree of hydration-based creep modeling of concrete with blended binders: from concept to real applications

Schutter

Liu

Yuan

2014

Journal of Sustainable Cement-Based Materials

View full text Add to dashboard Cite

The mechanical behavior of hardening concrete is to a large extent determined by the evolving microstructure as a result of the hydration process. For traditional binder systems, consisting of Portland cement or blast furnace slag cement, the degree of hydration is known to be a fundamental parameter in this respect, enabling a detailed study and accurate prediction of the early-age mechanical behavior, including basic creep. Nowadays, in view of improved sustainability of cementitious materials, binder systems tend to become more complex, consisting of a blend of different powders. As the hydration process and microstructure development are influenced by the inclusion of powders into the binder, the question is raised whether the degree of hydration concept is still applicable to concrete based on complex blended binder systems. In this paper, some experimental results are summarized and the application to real structures is illustrated. Basic creep of hardening concrete with complex blended binders can still be modeled following the degree of hydration concept.

show abstract

Time‐dependent analysis during construction of concrete tube for tower high‐rise building

Cited by 10 publications

References 3 publications

Long‐term data of reinforced concrete beams subjected to high sustained loads and simplified prediction method

Long‐term data of reinforced concrete beams subjected to high sustained loads and simplified prediction method

A Comparative Field Monitoring of Column Shortenings in Tall Buildings Using Wireless and Wired Sensor Network Systems

Degree of hydration-based creep modeling of concrete with blended binders: from concept to real applications

Contact Info

Product

Resources

About