Analysis On Machanical Charactritics And Bearing Capacity Of Assembly Skew Hollow Slab Bridge

The　skew　bridge　has　been　extensively　applied　in　the　high-grade　highway　and　stereoscopic　transportation　hinge　in　order　to　get　better　alignment　of　the　ameliorative　road　and　increase　traffic　capacity　of　the　road　transportation.　Assembly　skew　hollow　slab　bridge　becomes　an　important　part　of　skew　bridge　because　of　its　low　height　and　simple　pattern.　Because　its　mechanical　property　is　comprehensive　and　there　are　not　comparatively　many　researches　on　it,　it　is　of　great　importance　both　in　reality　and　theory　to　study　it.　This　dissertation　summarized　the　development　state　of　assembly　skew　hollow　slab　bridge.　Based　on　it,　the　research　content　of　this　dissertation　has　been　determined.　Tuan　Shan　River　Bridge　is　selected　as　an　example　and　APDL　is　used　to　analyze　the　elastic　properties.　After　calculating　the　internal　force　influence　surface　of　assembly　skew　hollow　slab　bridge,　the　internal　force-controlling　section　is　attained;　the　transverse　distribution　of　internal　force　is　studied　and　the　transverse　distribution　coefficient　is　parametric　analyzed.　Based　on　the　results,　relation　formula　of　transverse　distribution　coefficient　between　skew　and　perpendicular　bridges　are　fitted.　Practical　calculation　method　for　the　internal　force　calculation　of　assembly　skew　hollow　slab　bridge　is　offered.　Some　conclusions　are　drawn　from　comparing　and　analysing　the　internal　force,　bearing　reaction　and　deformation　of　both　assembly　and　monolithic　skew　slab　bridges.　　Through　carrying　out　load　test　research　of　a　assembly　skew　hollow　slab　bridge,　the　feasibility　and　correctness　of　the　fitting　formula　of　the　internal　force　lateral　distribution　to　calculate　the　internal　force　has　been　verified.　　Having　considered　material　nonlinear,　this　dissertation　adopted　space　isoparametric　element　and　calculated　the　ultimate　load　of　this　skew　hollow　slab　in　various　performances,　got　the　curve　of　load　deflection,　warping　and　the　property　of　total　damaging　property.　Based　on　the　foundation,　calculation　formula　of　normal　section　intension　of　skew　hollow　slab　is　put　forward,　which　can　be　offered　as　the　reference　of　the　design　of　this　kind　of　bridge.