Study On The Construction Technology Of Four-span Reinforced Concrete Slab Arch Bridge With Feng-yu Building On The Deck

Reinforced concrete slab arch bridge is the oldest bridge form, because of itssimple structure, convenient construction, reinforced concrete slab arch bridge is stillused. Especially in western mountainous area inhabited by ethnic minorities, combinedwith local architectural features, the ancient slab arch bridge type has fundamentallychanged new color in contemporary. Fengyu bridge built by the Dong minority peoplein old days was usually constituted by the pier、wooden beams、 pavilion, it was usuallypedestrian bridge; Today combined with modern bridge construction technology, Dongminority fengyu bridge has transformed into the bridge type whose substructure iswhole reinforced concrete arch bridge, the supperstructure is the Fengyu buildingpossessed of Dong characteristics and available for vehicles. This type of bridge retainscharacteristic landscape of fengyu bridge and improves the traffic carrying capacity ofthe bridge at the same time, and enhance practicality of fengyu bridge.That fengyu bridge changed from the pedestrian bridge to vehicular bridge meansits carrying capacity requires corresponding calculation. Substructure of Fengyu bridgeis multi-span statically indeterminate hingeless arch structure, Superstructure isbeam-column structure made by pure wooden. The main arch as main stress parts needssimulation analysis to study its stress situation. This paper combined with actualengineering case of Wuyang fengyu bridge in Guizhou Yuping Dong autonomouscounty, studies the influences of bridge with fengyu building on the deck on stress ofmain arch, estimates Fengyu building load is good for which part of member or not, andreasonable construction methods are put forward to make sure construction safety andstability and better enhance the carrying capacity of the bridge and extend the serviceperiod aiming to stress situation.This paper takes Wuyang fengyu bridge as an example, uses finite elementsoftware MIDAS/Civil to establish space model and finds construction technologywhich is fit for Wuyang fengyu bridge construction by dividing different constructionconditions.①Combined with example and used MIDAS/Civil software to build bridgessimulation model, analyzed the influences of bridge with fengyu building on the deckon stress of bridge, compared internal force change of main stress structure of bridge.②According to construction technology of reinforced concrete arch bridge andcombined with example of Wuyang fengyu bridge, chose a construction method with support to construct main arch, divided construction phase according to the actualconstruction situation.③According to pouring characteristics of the main arch, use finite elementsoftware to analyze and calculate, reasonable segmentation method should be adopted inthe main arch pouring process, many aspects such as the internal force、deformation andconstruction stability of key parts of the bridge structure should be chose.④Combined with the actual needs of construction on site of the project, summedup a reasonable construction method of the main arch and its choice basis.The content of this paper provides technical support for the actual construction ofWuyang fengyu bridge, and provides a reference for the choice of construction processof Dong minority fengyu bridge, it has a certain reference significance.