use of auxiliary elements in refining and betterment of engineering properties of soil have gained attention since a long time ago. nowadays the effectiveness and capability of the soil reinforcing technique for giving proper practical solutions in various projects have resulted in this technique quickly gaining a place in geotechnical engineering. in this paper, the results of laboratory studi...

For a reinforced concrete beam subjected to fatigue loads, the structural stiffness and bearing capacity will gradually undergo irreversible degeneration, leading to damage. Moreover, there is an inherent relationship between the stiffness and bearing capacity degradation and fatigue damage. In this study, a series of fatigue tests are performed to examine the degradation law of the stiffness a...

The concrete-filled double steel tube (CFDST) has been more and widely used in infrastructure due to its greater moment of inertia compared the ordinary (CFST). With increase collision accidents occurring recent years, research on CFDST under impact needs attention. To study dynamic responses columns lateral impact, finite element package ABAQUS was simulate force mid-span deflection column cou...

The author carried out dynamic load test research on a prestressed concrete rigid frame bridge. Under load, the ratios of measured and theoretical frequencies first four vertical vibrations bridge were 1.081, 1.153 respectively. corresponding damping are 0.011, 0.010 maximum coefficient sports car is 1.049, strain increment 0.059. impact between 0.012 0.049, which basically equivalent to design...