Method and apparatus for monitoring bridge structures for scouring
Реферат: METHOD AND APPARATUS FOR MONITORING BRIDGE STRUCTURES FOR SCOURING Abstract of the Disclosure In one embodiment of a technique for monitoring scouring around structural members which are at least partially submerged in the soil bed material at the bottom of a body of water, the distance between a fixed point on the structural member and the topmost portion of the soil bed material near the member is determined and compared to a predetermined value. When scouring occurs, removal of some of the soil bed material results in an increase in the measured distance, which increase can be used to indicate the occurrence of scouring in an appropriate manner, such as by utilizing a display, by recording the data, or even by telecommunicating the data to another location. The distance determination may be made either only when called for or periodically at predetermined times, in order to provide continuous monitoring. In an alternative embodiment, scour monitoring is provided by one or more probes disposed so as to initially rest on top of the soil bed material located near the structural member. When soil bed material is removed by scouring, the probe moves downwardly due to the force of gravity. The probe is further configured so that it remains in its displaced position even if the scoured area is later refilled by the flow pattern of the body of water. The extent of the downward movement of the probe is determined by a commercially available means. As with the first technique, the data thus obtained may be displayed, recorded, or sent to another location.
Method and apparatus for dispensing a liquid with a pipetting needle
Номер патента: CA2505216A1. Автор: Olivier Elsenhans,Frank May,Juerg Dual. Владелец: F Hoffmann La Roche AG. Дата публикации: 2005-11-14.