Bridge Engineering Construction
Bridge engineering mainly discusses the design of bridge crossing, the determination of bridge aperture, the confirmation of bridge deck height by considering navigation and route requirements, the confirmation of buried depth of foundation by considering that the base is not subject to scouring or frost heaving, the design of diversion buildings, etc.; bridge scheme design; bridge structure design; bridge construction; bridge verification; bridge experiment; bridge maintenance, etc.
Ancient bridges were mainly used to pass people and animals, and the load was not large. The longitudinal slope of the bridge deck could be steep, and even the steps could be laid. Since the railway, the load accepted by the bridge has been doubled, and the standard requirements for the slope and curve of the line are high, and the railway network needs to be built to increase the economic benefits. Therefore, in order to cross larger and deeper rivers and valleys, the bridge is forced to develop to a large span. In the inspection of bridge maintenance, new fine measuring instruments are cited, such as measuring the defects of structural materials and elastic modulus by acoustic method; checking the crystal structure of steel by hand-held metallographic camera, so as to strengthen as soon as possible and prevent the trouble in the end, so as to extend the service life of the bridge.
Bridge engineering is always under the comprehensive influence of production development and all kinds of scientific and technological progress, in accordance with the applicable, safe, economic and beautiful criteria, and constantly forward.