交通科技与经济
交通科技與經濟
교통과기여경제
Technology & Economy in Areas of Communications
2012年
2期
45-47,51
,共4页
钢管混凝土%组合桁架%连续刚构%薄壁高墩%土压力
鋼管混凝土%組閤桁架%連續剛構%薄壁高墩%土壓力
강관혼응토%조합항가%련속강구%박벽고돈%토압력
concrete filled steel tube(CFST)%composite truss%continuous rigid frame%thin-walled high pier%earth pressure
重庆万州大桥为钢管混凝土桁架变截面连续刚构，主墩为双肢薄壁高墩。采用CivilMidas2010模拟重庆万州大桥7#墩右侧距地面填土20m外，分析土压力对钢管混凝土桁架连续刚构桥墩及全桥的影响。结果表明土压力对桥梁上部结构影响较小，但会使桥墩弯曲产生裂缝，增加系梁的拉应力。
重慶萬州大橋為鋼管混凝土桁架變截麵連續剛構，主墩為雙肢薄壁高墩。採用CivilMidas2010模擬重慶萬州大橋7#墩右側距地麵填土20m外，分析土壓力對鋼管混凝土桁架連續剛構橋墩及全橋的影響。結果錶明土壓力對橋樑上部結構影響較小，但會使橋墩彎麯產生裂縫，增加繫樑的拉應力。
중경만주대교위강관혼응토항가변절면련속강구，주돈위쌍지박벽고돈。채용CivilMidas2010모의중경만주대교7#돈우측거지면전토20m외，분석토압력대강관혼응토항가련속강구교돈급전교적영향。결과표명토압력대교량상부결구영향교소，단회사교돈만곡산생렬봉，증가계량적랍응력。
Wanzhou bridge is a CFST, Truss of variable cross-section Continuous rigid frame, the key pier is thin-walled high pier. The force analysis for the 7 g pier and full bridge under earth pressure of twenty metres by Civil Midas 2010. The results showed that soil pressure on the top structure of bridge is less affected, but it can make pier bending cracks, and increase the tensile stress of beam.
