نتایج جستجو برای: uplift resistance
تعداد نتایج: 379163 فیلتر نتایج به سال:
In this paper, we develop a new axisymmetric analytic model of surface uplift upon sills and laccoliths, based on the formulation of a thin bending plate lying on an elastic foundation. In contrast to most former models also based on thin bending plate formulation, our model accounts for (i) axi-symmetrical uplift, (ii) both upon and outside the intrusion. The model accounts for shallow intrusi...
Cone penetration test is one of the most common in-situ tests for pile analysis given that by its analogy as a model pile, the measured cone resistance and sleeve friction can be employed for estimation of pile unit toe and shaft resistances, respectively. In this paper, group method of data handling (GMDH)-type neural networks optimized using Genetic algorithms (GAs) are used for modelling the...
Because of the deltaic nature Netherlands, deep soft soil deposits are widespread. Due to population density exploitation underground space is vital for commercial developments and transport networks. Piles used as primary support elements in excavations, cut cover tunnels, quay walls, flood defences provide uplift resistance base tunnels basements. This paper examines empirical correlations li...
Patterns of late Palaeogene mammalian evolution appear to be very different between Eurasia and North America. Around the Eocene-Oligocene (EO) transition global temperatures in the Northern Hemisphere plummet: following this, European mammal faunas undergo a profound extinction event (the Grande Coupure), while in North America they appear to pass through this temperature event unscathed. Here...
The Anthocoris nemorum group belongs to the Anthocoridae (Hemiptera), and is an important group of predators of agricultural pests. A phylogeny was constructed in conjunction with dispersal-vicariance analysis of the Anthocoris nemorum group species in order to discern the relationships between the phylogeographical structuring of A. nemorum group species, and the effects of the Qinghai-Tibet p...
An ongoing enigma for the standard geological community is why all the high mountain ranges of the world—including the Himalayas, the Alps, the Andes, and the Rockies—experienced most of the uplift to their present elevations in what amounts to a blink of the eye, relative to the standard geological time scale. In terms of this time scale, these mountain ranges have all undergone several kilome...
Relief wells are used extensively to relieve excess hydrostatic pressure in pervious foundation strata overlain by impervious top strata, conditions which often exist landward of levees and downstream of dams and hydraulic structures. Placing well outlets in below-surface trenches or collector pipes helps dry up seepage areas downstream of levees and dams. Relief wells are often used in combina...
We appreciate the comments made by Tashkin et al regarding the limited generalisability of the Understanding Potential Long-term Impacts on Function with Tiotropium (UPLIFT) findings. In response, the sample we studied was not designed to be representative of the general chronic obstructive pulmonary disease (COPD) population, but rather the subgroup of patients with severe COPD who are likely ...
[1] The western Andean mountain front forms the western edge of the central Andean Plateau. Between 18.5 and 22 S latitude, the mountain front has 3000 m of relief over 50 km horizontal distance that has developed in the absence of major local Neogene deformation. Models of the evolution of the plateau, as well as paleoaltimetry estimates, all call for continued large-magnitude uplift of the pl...
Six localities in the lower Chinle Group of central New Mexico yield a tetrapod fauna consisting of the diminutive metoposaurid cf. Apachesaurus sp., and indeterminate large metoposaurids (probably Buettneria sp.), the phytosaur Rutiodon sp., indeterminate phytosaurs, the aetosaurs Desmatosuchus sp. and cf Stagonolepis sp., a probable theropod, and other, indeterminate archosaurs. Five of these...
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