The water supply is the crucial problem of human beings in the world. Earth dams are usually the most important structures to store and manage the main sources: surface waters. The safety of earth dams in different conditions especially under earthquake loadings plays a vital role in sustainable developments. Recently, mixed-clay soil is widely used as water- seal material in the core of earth ...

Identifying the next challenges for wind engineering is a highly active topic. In the last year, the American Society of Civil Engineers convened a national meeting on the Future of Wind Engineering to discuss emerging and trending topics. The National Science Foundation has reimagined the Network for Earthquake Engineering Simulation as the Natural Hazards Engineering Research Infrastructure p...

In this paper, a methodology is presented for optimum shape design of double-layer grids subject to gravity and earthquake loadings. The design variables are the number of divisions in two directions, the height between two layers and the cross-sectional areas of the structural elements. The objective function is the weight of the structure and the design constraints are some limitations on str...

Abstract Prefabricated construction is attracting increasing interest in recent years, since this method has various advantages as compared to the cast-in-situ method, such less time, higher quality control and reduced environmental impact. As a typical type of prefabricated structures, precast segmental column (PSC) been used substructure accelerate speed bridges. This paper reviews performanc...

Goals of this preliminary study are to better understand (1) earthquake performance of wood-frame shear walls carrying gravity loads, compared with walls without gravity load, and (2) performance of walls subjected to a sequence of earthquake motions, compared with walls subjected to a single earthquake. Tests with simulated earthquake ground motions were conducted on 2,440 by 2,440-mm (8 by 8-...

The number of constructed dams has been largely increased due to high demands of water supplies, and earth dams are the most common types since they are more compatible to the environment. Nevertheless, the stability of these important structures during earthquakes has to be carefully evaluated and guaranteed. In the past, earth dams usually designed with pure clay core, but in recent decades t...