All the sediments discharged from the Quaternary glaciers differ in their granulometric and mineral composition. Tills, sands, and clays cover unevenly sized areas in various places. However, during engineering geolog...
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The respective key-note presentation will highlight the results recently obtained by the research group on predicting the serviceability behaviour of RC members. The presentation will consist of three main parts: 1) A...
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A possible methodology for streamlining the structural safety verifications, needed for authorizing the transit of exceptional transportation vehicles (ETV) on road bridges, is discussed. ETVs, and mainly those classi...
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Grid-shell structures are popular in roofing for their aesthetic appeal and structural advantages, enabling the construction of lightweight, large roofs using slender elements. However, their widespread use is limited...
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Nowadays,the development of novel metallic materials for rock support have attracted research interests since they can significantly improve the deformation and energy absorption capacities of rock *** previous studie...
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Nowadays,the development of novel metallic materials for rock support have attracted research interests since they can significantly improve the deformation and energy absorption capacities of rock *** previous studies proved the importance and mechanical advantages of utilizing high-strength and high-toughness(HSHT)steels in rock support,there is no systematic analysis to reveal the essential energy absorption parameter and the guidelines for further development of metallic rock support *** paper analyzes the energy absorption characteristics of novel HSHT steels(negative Poisson’s ratio(NPR)and twinning-induced plasticity(TWIP)steels)in comparison with conventional rock support materials.A physically based crystal plasticity(CP)model was set up and calibrated to study the effect of strain hardening rate(SHR).Meanwhile,the roles of underlying physical mechanisms,*** dislocation density and twin volume fraction,were *** results show that the improvement of energy absorption density(EAD)is essential for further development of rock support materials,besides the increase of energy absorption rate(EAR)for previous development of conventional rock support *** increase of EAD requires increases of both strength and deformation capacity of *** HSHT steels,the decrease of SHR has a positive effect on the improvement of *** addition,the increase of EAD is followed by the increase of twin volume fraction and the decrease of plastic Poisson’s ratio which can promote deformation plasticity of ***,the increase of EAR is correlated with the accumulation of dislocation density,which can increase the strength of *** paper provides the theoretical basis and guidelines for developing rock support materials in deep underground engineering and other related fields.
This paper focuses on a novel and computationally efficient large-displacement methodology utilizing a corotational approach for the stability analysis of masonry structural elements. By virtue of the flexibility offe...
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This paper focuses on a novel and computationally efficient large-displacement methodology utilizing a corotational approach for the stability analysis of masonry structural elements. By virtue of the flexibility offered by the Virtual Element Method, each brick is modeled using a single Virtual Element. In contrast, the mortar layer is modeled through multiple cohesive damage-frictional elements. Furthermore, the adopted Virtual Element formulation does not require stabilization. The advantages of the proposed approach are showcased through several examples demonstrating the striking accuracy of the obtained results compared to analytical solutions. The proposed approach is used to assess the sensitivity of the load-bearing capacity and ductility of masonry walls under vertical loading to mortar tensile strength, boundary conditions, load eccentricity, and block irregularity.
High tensile strength is the most vital point in Engineered Composite Cement (ECC) to reduce the dependability of steel reinforcement. In the present paper, the influence of PVA fiber for getting the compressive stren...
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The computational burden needed to perform a fragility analysis of structures can be excessive and beyond the capability of regular computing systems. In this work, a Neural Network (NN) implementation is presented to...
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Monumental heritage buildings were typically built without considering the seismic action. Therefore, they are potentially susceptible to seismic damage. The structural assessment and the vulnerability analysis of his...
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The Giralda tower of Seville is an ancient complex tower. It is composed of an inner and an outer wall connected by an ascending ramp that varies with its height. The ascending ramp makes every façade be differen...
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