CFD-Based Overpressure Prediction for Congested Multi-Modules—Safety Gap Effect

Author(s):  
Guowei Ma ◽  
Yimiao Huang ◽  
Jingde Li
Keyword(s):  
2008 ◽  
Author(s):  
Kaitlin Laidlaw ◽  
Sara Stevens ◽  
Jim McAuliffe ◽  
Jay Pratt

1994 ◽  
Author(s):  
Jay Pratt ◽  
Heather Oonk ◽  
Harold Bekkering ◽  
Richard A. Abrams ◽  
Mark B. Law
Keyword(s):  

1998 ◽  
Vol 31 (10) ◽  
pp. 1313-1318 ◽  
Author(s):  
W. Machado-Pinheiro ◽  
L.G. Gawryszewski ◽  
L.E. Ribeiro-do-Valle

10.29007/275r ◽  
2018 ◽  
Author(s):  
Niraj Shinde ◽  
Devesh Soni

The seismic behavior of multi-storied building supported on Friction pendulum system (FPS) during impact with adjacent structure is examined. One lateral degree of freedom is considered at each floor, base mass and slider. Adjacent structure (i.e. retaining walls or entry bridges) is modeled as an impact element in form of spring and dashpot. The impact response of FPS bearing is studied under 60 records consisting of service level, design basis and maximum credible earthquakes. Newmark’s step by step iteration method is used to solve the differential equations of motion for the isolated system. The impact response of isolated building is studied under the variation of important system parameters such as size of gap and stiffness of impact element. To reduce the influence of impact a viscous damper is employed between the isolated building and adjacent structure. It is concluded that during impact with adjacent structure the superstructure acceleration and base shear increases while bearing displacement decreases. The employment of viscous damper shows considerable reduction in bearing displacements, base shear and impact force during DBE and MCE events. Further, the effects of impact are found critical if the superstructure is flexible and greater stiffness of impact element. The top floor acceleration increases with the isolation gap up to certain limit and again reduces with the increase in isolation gap.Keywords - Adjacent Structure; isolation; Sliding bearing; Viscous Damper; Gap effect; Floor acceleration; Impact


2021 ◽  
Vol 95 ◽  
pp. 01003
Author(s):  
Irina Băncescu

Rural – urban income gap is an important social-economic development indicator for a society. A large rural - urban income gap within a society reveals a split of it into two distinct societies, one extremely poor compared to the other. In Romania, almost half of the resident population lives in rural areas (46.02% in 2019), while the urban-rural migration flow is higher than the traditional reverse flow since 1997. However, the country is characterized by regional economic disparities, Bucharest-Ilfov region being the most economically developed. Labour market in rural areas is underdeveloped, rural population being highly depended on subsistence agriculture. Furthermore, rural areas have a low level of income and living standards. In this paper, we analysis the rural-urban labour market dynamics and rural-urban income gap using a LMDI (logarithmic mean Divisia index) decomposition for 2005-2019 period. Factors such as income gap effect and structural rural income effect are considered. Results show that the total urban–rural income gap has decreased with 8.91%, while structural rural income effect contributed with an increase of only 0.63%, the income gap effect (of different employed population groups) being of -9.49%.


2006 ◽  
Vol 454 (1) ◽  
pp. 285/[687]-295/[697] ◽  
Author(s):  
Haiying Wang ◽  
Xiangyi Nie ◽  
Thomas X. Wu ◽  
Shin-Tson Wu

Sign in / Sign up

Export Citation Format

Share Document