交通科技
交通科技
교통과기
TRANSPORTATION SCIENCE & TECHNOLOGY
2014年
2期
1-3
,共3页
钢箱梁%支点横梁%大悬臂%结构分析%有限元
鋼箱樑%支點橫樑%大懸臂%結構分析%有限元
강상량%지점횡량%대현비%결구분석%유한원
steel box girder bridge%support cross beam%large cantilever%structural analysis%finite element
介绍了某大悬臂钢箱梁桥的结构特点和设计构造。结合有限元的数值计算方法，对支点横梁进行了空间应力分析，并与平面应力进行对比，给出了钢横梁简化计算方法和参数取值。结果表明：钢横梁在支座区域和纵腹板区域应力比较大，存在较大的应力集中，与常规简化方法计算有较大偏差，在设计中应引起足够的重视。
介紹瞭某大懸臂鋼箱樑橋的結構特點和設計構造。結閤有限元的數值計算方法，對支點橫樑進行瞭空間應力分析，併與平麵應力進行對比，給齣瞭鋼橫樑簡化計算方法和參數取值。結果錶明：鋼橫樑在支座區域和縱腹闆區域應力比較大，存在較大的應力集中，與常規簡化方法計算有較大偏差，在設計中應引起足夠的重視。
개소료모대현비강상량교적결구특점화설계구조。결합유한원적수치계산방법，대지점횡량진행료공간응력분석，병여평면응력진행대비，급출료강횡량간화계산방법화삼수취치。결과표명：강횡량재지좌구역화종복판구역응력비교대，존재교대적응력집중，여상규간화방법계산유교대편차，재설계중응인기족구적중시。
In this paper ,the mechanical behavior of a steel box girder bridge is analyzed with finite el-ement method,and its main design details are described.The spatial stress analysis for the support cross beam is given,and contrasted with its plane stress.This article puts forward the reasonable sim-plified calculating method and value of parameters for cross beam.The result shows that stress concen-tration on support zones and longitudinal web zones are serious,and the result has a large deviation with the conventional simplified method.So it must be considered in design process.
