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大跨连续弯箱梁偏载问题的探讨
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作者 毛腾龙 《中国水运(下半月)》 2011年第1期195-198,共4页
文中通过对位于R—2,200m右偏圆曲线上的52+2×85+52m刚构—连续组合结构偏载系数的计算分析,论述了影响曲线大跨桥梁偏载系数大小的因素及考虑活载最不利因素对其的影响,并对本桥偏载系数的计算作以小结及其对设计的影响。
关键词 大跨连续箱梁 恒载偏载 活载偏载 偏载效应值
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Soil-structure interaction of unsymmetrical trench installation culvert 被引量:8
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作者 陈保国 郑俊杰 鲁燕儿 《Journal of Southeast University(English Edition)》 EI CAS 2009年第1期94-98,共5页
The computation of the design load on culverts in the current Chinese General Code for Design of Highway Bridges and Culverts (CGCDHBC)is primarily based on the linear earth pressure theory, which cannot accurately ... The computation of the design load on culverts in the current Chinese General Code for Design of Highway Bridges and Culverts (CGCDHBC)is primarily based on the linear earth pressure theory, which cannot accurately reflect the changes in vertical loads on trench installation culverts. So the changes in vertical earth pressure and soil arching effect in the backfill for an unsymmetrical trench installation culvert are studied based on a full scale experiment and finite element (FE) simulation. The variation laws of foundation pressure and settlement are also analyzed. Meanwhile, the influence of eccentric load induced by an unsymmetrical trench installation on the interaction of a soil- structure system is discussed. Results show that soil arch is formed when the backfill on the culvert reaches a certain height. It can relieve the earth pressure concentration on the crest of the culvert, but it is instable. The earth pressures obtained by full scale experiment and numerical simulation are greater than those calculated by the current CGCDHBC method. The eccentric load effect on the culvert has a significant influence on the stress states and deformation of the soil-structure system. 展开更多
关键词 soil-structure interaction soil arching effect eccentric load effect full scale experiment numerical simulation
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