Construction Monitoring Of Long Wan Larger Span Bridge And Cross Diaphragm Simplified Computing Research

With the high-speed development of the city and transportation，In order to meet theheavy traffic demand．Recently，The bridge width is more and more big，There have beenmany bridge width up to30~40m city wide bridge．Combined with the construction monitoring of a twin towers and double cable planeprestressed concrete cable-stayed bridge which span is30+125+290+125+30m，The corework mainly has following several aspects：（1）Afinite element analysis model is established，The model accurately simulate thestress state of each construction stage，Determine the initial cable force and the vertical moldelevation of each construction stage，The effect of monitoring of the whole bridge reached theideal state．（2）Aspace finite element model of girder segment is established．Under various loadconditions，The stress characteristics and the distribution of vertical load of cable beam ofprestressed concrete cable-stayed bridge is obtained by numerical analysis．Established thelongitudinal force of cable beam of Longwan bridge is in line with the stress state of simplysupported beam．（3）A simplified calculation method of cable beam is put forward based on theequivalent shear method，That is fully considering the effect of roof and floor deck of maingirder，And this is verified by examples．...