نتایج جستجو برای: lateral soil resistance
تعداد نتایج: 671183 فیلتر نتایج به سال:
Unburied subsea pipelines under high-temperature conditions tend to relieve their axial compressive stress by forming localised lateral buckles. This phenomenon is traditionally studied the assumption of a specific deflection profile (mode) consisting fixed number lobes. We study thermal buckling as genuinely applying homoclinic (‘flat’) boundary conditions. By not having assume particular mode...
The buckling analysis of an offshore pipeline refers to the temperature-induced uplift and lateral pipelines by analytical, numerical, experimental means. Thus, current study discusses different research performed on thermal pipe-buckling factors affecting pipeline’s behaviour. consists dependency direction seabed features burial condition; pre-buckling post-buckling load-displacement behaviour...
In the near future, occurring extreme ground motions exceeding structural design level is predicted. If such are input to a base-isolated building, building may collide retaining wall and damage so counterplans against important issues. Aim analyze behavior of when it collides with wall, we have proposed simple modeling method for lateral resistance backfill soil using line elements. this metho...
Soil organisms exhibit resistance to a wide range of antibiotics as they either need to protect themselves from endogenous antibiotics or from those present in their soil environment. The soil could serve as a reservoir for resistance mechanisms that have already emerged or have the potential to emerge in clinically important bacteria. Streptomyces coelicolor, a non-pathogenic soil-dwelling org...
Subsea pipelines buried in the seabed may undergo large lateral displacement under environmental, operational, and accidental loads at different interaction rates hence drainage conditions. The undrained shear strength is commonly used practice to assess pipe-soil assuming a sufficiently high rate. This approach neglects consolidation effects rate-dependent response of soil significantly undere...
Antibiotics, which permit the effective treatment of bacterial infections, represent a fundamental triumph of medical science. However, their widespread clinical and agricultural use has led to the rapid emergence and spread of resistance. This proliferation of resistance reduces or eliminates the utility of antibiotics, rendering some clinical infections dangerously untreatable1. In light of t...
Desertification has become one of the main problems of human societies living in the vicinity of desert areas in recent years. One of the methods that have been considered in recent years and are rapidly expanding in the field of soil mechanics is the Microbial Induced Carbonate Precipitation (MICP). In this method, urea-positive organisms that are naturally present in the soil can stabilize th...
Mollisols of Santa Fe have different tilth and load support capacity. Despite the importance of these attributes to achieve a sustainable crop production, few information is available. The objectives of this study are i) to assess soil physical indicators related to plant growth and to soil mechanical behavior; and ii) to establish relationships to estimate the impact of soil loading on the soi...
[1] The role of upslope soil pore water pressure on lateral subsurface storm flow dynamics is poorly understood. Further development of hillslope hydrologic models requires new understanding from field understanding. In particular, we need new, quantifiable measures that link upslope soil pore pressure and water table dynamics to the timing and volume of subsurface storm flow. Here we examine t...
Buckle-initiation techniques, such as sleepers, are usually installed to trigger lateral buckling at pre-designated locations release the axial compressive forces induced by thermal loading. Taking nonlinear pipe–soil interaction model into account, a mathematical is proposed investigate of subsea pipelines triggered sleeper. The numerical solution validated comparing with solutions in literatu...
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