نتایج جستجو برای: bridge piers and abutments
تعداد نتایج: 16836952 فیلتر نتایج به سال:
Recently, a benchmark problem has been developed to study seismically excited highway bridges. In the second phase of the aforementioned study, the bridge is isolated both at the abutments and at the central pier location. The isolation, though effective in reducing the superstructure responses such as mid-span accelerations, results in increased mid-span and isolator displacements. The perform...
The present study used Flow-3D to investigate the effect of installing netted collars with different shapes on bridge piers. The results showed that installing netted triangular, circular, square, and rectangular collars with a hole diameter of 0.1 (d/D) reduced scouring by 49.5, 52.2, 52.7, and 56.5 percent, respectively, compared to the case with no collars. A hole diameter of 0.15 (d/D) for ...
Piers were important structural members between superstructure and foundation of bridge which designed to transfer resist the vertical loads horizontal (dead load structure, traffic loads, water pressure, ice, wind) foundation. The objective this study was evaluate effect number piers in transverse direction (horizontal distance or spacing) on static dynamic responses for two types bridges stru...
background and aims. because of compromised angulations of implants, the abutments are sometimes prepared. the purpose of this study was to investigate the effect of removing one wall of the implant abutment on the retention of cement-retained crowns. materials and methods. four prefabricated abutments were attached to analogues and embedded in acrylic resin blocks. the first abutment was left ...
The main objective of this study is to compare the structural members capacity between different types bridges structures under seismic load. results modal analysis showed that models box girder bridge, precast T and U steel bridge had higher values natural frequency comparing with others Pushover in transvers direction bent No. 2 which was located middle superstructure displaced more than 1 3....
Research evolution regarding dental research determines the increase of patient's desire to preserve their dentition for a long time. The loss of a molar tooth as the last teeth present on the dental arch, raises issues regarding how the prosthesis should be placed, still patients are usually reluctant to use as last resort the prosthetic solution. This article describes the technique of root a...
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