摘要
陡坡地段桥梁桩基的稳定性问题是桥梁工程安全的一个重要问题。通过对广东省某高速公路建造在陡坡地段的桥梁桩基从施工到通车全过程开展监测,分析了在施工荷载作用下桥梁桩基和陡坡土体的位移分布和变化规律。然后利用弹塑性有限元建模,分析了桩身位移的分布规律,并与监测结果进行了比较,得出有限元建模能较好的模拟桩土之间的相互作用;分析了在坡顶荷载作用下桩身弯矩随深度的变化情况和桩身最大弯矩随荷载大小的变化情况。
Full-height piled bridge abutments constructed on steep slope are probed to soil-structure interaction effects. A series of monitoring methods have been undertaken on a bridge of this type in Guangdong Province and an accompanying series of finite element analyses are studied. The monitoring stages started from construction of piles, construction of upper structures and ended 6 months after whole bridge opened to traffic. The monitoring contents include embedded soil pressure sensor, embedded reinforced concrete strain sensor and buried displacement measuring pipe and a series of response data related to the piles have been collected. FEM method is used to analyze deformation and bending moment of piles and slope＇s entire deformation under the effects of construction load and traffic load. The results show that FEM is a proper method to imitate field situations.
出处
《勘察科学技术》
2006年第3期28-31,共4页
Site Investigation Science and Technology
