Numerical Modelling and Analysis of Composite Structures subject to Extreme Loading

A detailed study on the available methods of predicting ground movements due to tunnelling works was carried out during the construction of the Madrid Metro extensions in 19951999 and 19992003. A total of 100 km were built and commissioned during this period. A numerical model was developed to simulate the earth pressure balance (EPB) excavation procedure and to complement some of the deficiencies found in previous analytical or empirical subsidence estimation procedures. Before the beginning of the works, a total of six different methods were used to estimate ground movements generated by the tunnelling works at some monitored sections placed in all five cities linked by the 19992003 extension, and the estimations were published in an earlier paper in this journal. Once all tunnelling works were finished and actual measurements carried out, a number of comparisons between predictions and measurements were made and are included in this paper. Conclusions about the applicability and accuracy of the methods are established with the aim of helping researchers and engineers in their future projects.Key words: ground movements, monitoring, numerical modelling and analysis, settlement, tunnels.

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Numerical modelling and analysis of binary compound semiconductor growth under microgravity conditions

Journal of Crystal Growth ◽

10.1016/s0022-0248(01)01237-4 ◽

2001 ◽

Vol 229 (1-4) ◽

pp. 605-609 ◽

Cited By ~ 5

Author(s):

Toru Maekawa ◽

Yoshiaki Hiraoka ◽

Keisuke Ikegami ◽

Satoshi Matsumoto

Keyword(s):

Numerical Modelling ◽

Binary Compound ◽

Compound Semiconductor ◽

Microgravity Conditions ◽

Numerical Modelling And Analysis

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Numerical Modelling and Analysis of a Hybrid-Spar Floating Wind Turbine

Volume 9: Offshore Geotechnics; Torgeir Moan Honoring Symposium ◽

10.1115/omae2017-62578 ◽

2017 ◽

Author(s):

Tomoaki Utsunomiya ◽

Iku Sato ◽

Osamu Kobayashi ◽

Takashi Shiraishi ◽

Takashi Harada

Keyword(s):

Numerical Modelling ◽

Wind Turbine ◽

Prestressed Concrete ◽

Analysis Model ◽

Design Load ◽

Floating Wind Turbine ◽

Load Analysis ◽

Precast Prestressed Concrete ◽

Numerical Modelling And Analysis ◽

Nagasaki Prefecture

In this paper, numerical modelling and analysis of a hybrid-spar floating wind turbine is presented. The hybrid-spar consists of steel at the upper part and the precast prestressed concrete (PC) at the lower part. Such a configuration is referred to as a hybrid-spar in this paper. The hybrid spar was successfully installed offshore of Kabashima Island, Goto city, Nagasaki prefecture, Japan on October 18, 2013 (see OMAE2015-41544 [1] for details). In this paper, some details on numerical modelling of the hybrid-spar for design load analysis are presented. Then, the validation of the numerical analysis model is presented for a full-scale hybrid-spar model with 2-MW wind turbine.

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