Constuction Control And Study Of Shear Lag Effect Of Long-Span Thin-Walled Wide Box Girder Continuous Rigid Frame Bridge

with of our country highway swift and violent development of communication, high mound heavy to is it construct bridge already in the field of science of bridge building popularize and application just in succession to step. Construction of bridge bridge key link of construction, and bridge is it it controls to be bridge construction important component of technology not merely to construct, and implement relatively greater part of the degree of difficulty . This text rely on Chongqing Guizhou Province highway second stage contract control project of he-er-gou river brideg construction of bridge control the task. River he-er-gou river bridge one heavy to step foot-path form case form room thin wide case roof beam of wall just construct the bridge in succession, it it steps to be 122+210+122 mainly, main case roof beam wide to up to 22.5 meters. According to this bridge type characteristic of the river ear ditch bridge, Expound the fact heavy to step foot-path construct basic theories and method that construction controlled of bridge just in succession especially, construction key technology and deflection, the stress constructs and controls etc.. The cross section during the course of constructing in the bridge is surveyed on the achievement that the stress controls in addition, utilize limited difference divide basic theories of law and according to the small theory out of shape and superpose the principle, analyse bridge in conduct oneself with dignity and prestressing force function ,etc. multidimension load the case roof beam sectional cutting the stagnat effect of strength under function. Changing the law by strength characteristic and stress during the course of constructing of roof beam of discussion case. Thus for construct design of bridge just in succession, construct and scientific research offer reference basis.