摘要
以贵州省六盘水至威宁高速公路某大桥为依托工程,采用数值分析的方法,在考虑边坡和桥墩相互作用的情况下,对框架锚杆加固高速公路桥梁边坡的效果进行研究。结果表明,在饱和工况条件下,桥墩顶部水平向位移超过规范要求限值,且桥墩的桩身最大弯矩值远大于桥墩的抗弯强度,并导致桥墩产生一定的倾斜度。为防止桥墩倾斜的进一步加大,设计单位对该段边坡采取了框架锚杆加固的治理措施。加固后,边坡处于稳定状态且桥墩顶部位移值和桩身最大弯矩均满足要求,验证了框架锚杆结构加固高速公路桥梁边坡的有效性。
This paper takesa super-largebridge of Liupanshui-Weining Expressway in Guizhou provinceasan example,adopts the numerical simulation method, under the condition of fullyconsidering the interactionbetween the slopeand the pier, strengthens the slope of municipal highway bridges with frameanchorcables. The effect wasanalyzed. The results show that under saturatedcondition, the horizontal displacement of the top of the pier exceeds the limit of the codeand the maximumbending moment of the pier is far greater than thebending strength of the pier, which results ina certain degree of inclination of the pier. In order to prevent the further increase of the inclination of the pier, the design unitadopted the reinforcement measures of frameanchor cable for the slope.after reinforcement, the slope is ina stable stateand the displacementat the top of the pierand the maximumbending moment of the pile meet the requirements, which shows the effectiveness of the frameanchorcable structure in strengthening the slope of municipal highway bridges.
作者
杨涛
谭玉强
YANG Tao;TAN Yu-qiang(Guizhou Transportation Planning Survey & Designacademeco.Ltd.,Guiyang 550081,China)
出处
《水利科技与经济》
2019年第10期43-46,61,共5页
Water Conservancy Science and Technology and Economy
关键词
框架锚杆
市政公路
桥梁
加固效果
frameanchor
municipal highway
bridge
reinforcement effect
作者简介
杨涛(1982-),男,贵州兴义人,助理工程师,主要从事高速公路勘察设计方面研究工作;谭玉强(1981-),男,山东德州人,高级工程师,硕士,从事地质与岩土工程工作.
