Seismic Damage Analysis Of Slope Engineering Facilities In Wen Chuan Earthquake

The "5.12" Wenchuan earthquake was the largest earthquake since the founding of our country, brought huge losses to the people's lives and property。The slope engineering facilities suffered serious damage。According to primary statistics, the earthquake has caused about more than 10,000 slope disasters, a number of roads,railways therefore be damaged or interrupted, seriously influenced the rescue workers and related supplies to arrived in the first time。So it is very important to fully sum up and analysis the damage in the WenChuan earthquake to optimize the design of retaining structures and promote the development and revision of the aseismatic design code。First, this paper described the situation of the earthquake disaster and the effect on improvement of aseismatic code, summarized the research status on seismic design of retaining structures and the calculation method of the current codes。Secondly, widely investigated the engineering facilities in the disaster area, analyzed the retaining structures'damage situation and summarized the seismic damage degree and damage model。Then, calculated the stress and the stability of the gravity retaining wall and anti-slide pile by the method of the aseismatic design codes, including the situation of no earthquake and consider earthquake。Then, established the model of the gravity retaining wall and anti-slide pile, used the numerical analysis software—MIDAS/GTS to do time history analysis。Applying viscous boundary, taking acceleration time history as dynamic input, based on these, analyzed the model's acceleration response, displacement response and the changes of the earth pressure behind the retaining wall, the changes of bending moment, shear force on the Anti-slide pile and so on。Finally, based on contrast the numerical analysis results and the results with the current codes and combined with the investigation, maked recommendations on the revision of code。Through practical engineering research, combined with numerical analysis and current codes, some laws about the stress and deformation in the earthquake situation were gotten, which has some reference value to the revision of aseismatic design codes。...