偏心受压部分填充混凝土圆形钢桥墩横桥方向作用下拟静力试验
发布时间：2018-12-15 07:40
【摘要】：目的研究偏心受压及横桥方向往复荷载作用下部分填充混凝土圆形钢桥墩的力学性能.方法在径厚比、长细比等参数相同的条件下,竖向偏心荷载的偏心率为0.1和0.2时,对4个圆形截面部分填充混凝土钢桥墩试件进行试验.分析偏心受压及横桥向荷载作用下部分填充混凝土钢桥墩柱试件试验结果.结果竖向偏心荷载的存在改变了试件的受力性能.当试件的径厚比、长细比参数相同时,偏心率对钢管柱的承载能力影响比较明显.偏心率越大,桥墩的初始水平位移也随着增加.而偏心荷载的存在使得试件在偏心侧的承载力降低了7%~15%,另一侧加强了10%~18%,且偏心率越大,该现象越明显.结论内填混凝土对钢桥墩柱试件的承载力和延性性能有很好地补强效果;而竖向偏心荷载的存在使得试件在偏心侧的承载力降低,另一侧加强.
[Abstract]:The mechanical properties of partially filled concrete circular steel pier under eccentric compression and reciprocating load in transverse direction are studied. Methods under the condition of the same diameter to thickness ratio and aspect ratio, the eccentricity of the vertical eccentric load is 0.1 and 0.2 respectively. The test samples of four circular section partially filled concrete steel piers are tested. The test results of partially filled steel bridge pier columns under eccentric compression and transverse load are analyzed. Results the mechanical behavior of the specimen was changed by the existence of vertical eccentric load. The effect of eccentricity on the bearing capacity of steel tube columns is obvious when the diameter to thickness ratio and the aspect ratio parameters are the same. The greater the eccentricity, the more the initial horizontal displacement of piers increases. The existence of eccentricity load reduces the bearing capacity of the specimen at the eccentric side by 7 / 15 and the other side strengthens by 10 / 18. The greater the eccentricity is, the more obvious this phenomenon is. Conclusion the bearing capacity and ductility of the steel bridge pier column are reinforced by the inner filled concrete, while the bearing capacity of the specimen at the eccentric side is decreased and strengthened on the other side due to the existence of the vertical eccentric load.
【作者单位】： 沈阳建筑大学交通工程学院;沈阳建筑大学建筑工业化研究院;山东省公路设计咨询有限公司;
【基金】：国家自然科学基金项目(51378319) 辽宁省高等学校杰出青年学者成长计划支持项目(LJQ2014060)
【分类号】：U446.1
，
本文编号：2380272
[Abstract]:The mechanical properties of partially filled concrete circular steel pier under eccentric compression and reciprocating load in transverse direction are studied. Methods under the condition of the same diameter to thickness ratio and aspect ratio, the eccentricity of the vertical eccentric load is 0.1 and 0.2 respectively. The test samples of four circular section partially filled concrete steel piers are tested. The test results of partially filled steel bridge pier columns under eccentric compression and transverse load are analyzed. Results the mechanical behavior of the specimen was changed by the existence of vertical eccentric load. The effect of eccentricity on the bearing capacity of steel tube columns is obvious when the diameter to thickness ratio and the aspect ratio parameters are the same. The greater the eccentricity, the more the initial horizontal displacement of piers increases. The existence of eccentricity load reduces the bearing capacity of the specimen at the eccentric side by 7 / 15 and the other side strengthens by 10 / 18. The greater the eccentricity is, the more obvious this phenomenon is. Conclusion the bearing capacity and ductility of the steel bridge pier column are reinforced by the inner filled concrete, while the bearing capacity of the specimen at the eccentric side is decreased and strengthened on the other side due to the existence of the vertical eccentric load.
【作者单位】： 沈阳建筑大学交通工程学院;沈阳建筑大学建筑工业化研究院;山东省公路设计咨询有限公司;
【基金】：国家自然科学基金项目(51378319) 辽宁省高等学校杰出青年学者成长计划支持项目(LJQ2014060)
【分类号】：U446.1
，
本文编号：2380272
本文链接：https://www.wllwen.com/kejilunwen/daoluqiaoliang/2380272.html
