【文章內(nèi)容簡(jiǎn)介】
problems from the bridge engineering construction, the bridge engineering life cycle cost of the ...bridge structure holds tier of calculation with in theory to bridge floor shop , gives the remendation value having fixed thickness ,The project boundary has applied several tens years to every grade highway always middle. Already be out of keeping with the fact that the volume of traffic enhancing, active shop hold increasing with the heavy type, increasing by and speed of a vehicle surpassing the heavy type automobile with quickly. The bridge floor lays the impingement pretending to bear carriage wheel load tier directly , the bridge floor lays the deformation having loaded the part or all participation betokening girder construction , bridge floor shop pretends to be a main beam accepting the strenuously plicated driving force system , various form and the distribution laying the structure pretending to be self affect whose strain equally therefore. Bridges currently in effect: The regulation also may consult the T shape beam if there being no accurate reckoning。 the box shape beam handles. Judging from a lot of box beams design, the most designer is to handle to box beam ponent be in progress according to shape beam. Box beam reality accepts but a force though having one aspect bordering on the T beam, one aspect having being different from the T beam, the with regard to continuous box beam difference are influenced by his teacher and the Taoism, saw the political corruption in his country and put forward much useful advice to carry out reform.. Unfortunately the emperor of Han would not like to adopt his ideas and let his country wither away. However the emperor of admired the talent wanted to give him a position in state. Although finally killed owing to listening to the unfaithful advice of , he ruled his country on the principles advocated by . Until that time did the situation e to an end and the united central right e out. Especially box beam bridge floor is in recent years more and more broad, ratio of bay and bridge width is more and more small , does that long thin member still design the box beam according to T beam matching tendon , push down with regard to more and more no proper , leading to? The box beam framework reinforced bar that the beam designs is difficult to bring the due effect into play like T beam host tendon under actual strenuously circumstances. Therefore, the hypothesis states designing that and box beam reality accept force state disaccords. With material, development of industry, architectural bearing bridge improvement, make bridge host Liang more and more broad reaching the request accepting a force, big advanced level highway transverse direction across bridge with softer structure. Stiffness a