The Case Study About The Stitching Section Of The Broaden Bridge On Given Uneven Settlement Value

With the national economy development quickly, the sharp growth of trafficvolume put forward a severe test to the traffic system at present. Many now serve in thehighway and related facilities, safety and applicability cannot assure which weredesigned longer and their materials have ageing; leading to the travel capacity cannotmeet the requirements of the current development and obstruct the rapid economicdevelopment of our country.To meet the increasing volume of traffic of the needs and save the land resources,building on the existed highway which can reasonable use existing expansion highwayand improve existing traffic network capacity is a feasible way to the project, is also acommon important problem concerned by recent government and highway trafficindustry technical departments.Boarding the bridges in mountain accounted for themajority of the proportion of boarding the roads in mountain.The background of the project is “mountain low grade Highway Bridge broadensthe key technology reconstruction projects”, which is the science and technology projectof Yunnan province transportation hall. We can understand the characteristics ofmountainous highway broaden the bridge, such as the common characteristic, joiningtogether to broaden form etc through investigating the three is representative of theexpansion of the mountainous area highway bridge Based on linear model proposedsettlement under influence parameters, analysis the force on the joining of the bridgebroaden in the case of giving bridge uneven subsidence, which were the typicalmountain area broaden bridges. Giving the uneven settlement effect, understand theinfluence degree and law of each parameter contrast analysis of the influence degree ofthe factors, which provides the basis to broaden the bridge design optimization.