论文部分内容阅读
以上汽青岛清洁能源客车建设项目边坡为例,对锚定板墙支护体系进行改进,使单级锚定板墙支护体系满足18 m高回填土边坡的支护需求。设计中采用高强度预应力锚索作为拉杆,在各层填土中设置钢筋混凝土水平加筋板与锚索连接,垂直于填土层方向按“长短相间”方式布置各层拉杆。利用折线破裂面法对各层锚定板及整体稳定性进行验算,结果显示各层锚定板稳定系数略小,但整体稳定性满足。利用有限元软件PLAXIS分析挡墙受力及变形,均在设计允许范围内。改进后的锚定板墙,使用效果良好,说明18 m高边坡回填支护中采用预应力锚索及水平加筋板的新型锚定板墙支护体系有效可行。
Taking the slope of QAQQ passenger car construction project as an example, the support system of anchored slab wall is improved so that the single-stage anchored slab wall support system meets the support needs of 18 m high backfill slope. The design uses high-strength prestressed anchor cable as the tie rod, and the reinforced concrete horizontal stiffener plate is connected with the anchor rope in each layer of earth fill. The tie rods are arranged according to the direction of the fill layer. Using the broken line rupture method to check the stability of the anchoring plates and the overall stability of the layers, the results show that the stability coefficient of each layer of anchor plate slightly smaller, but the overall stability to meet. The finite element software PLAXIS is used to analyze the force and deformation of the retaining wall and are within the design allowable range. The improved anchored slab wall works well, which shows that the new anchored slab wall support system with prestressed anchorage cable and horizontal stiffened plate in 18 m high slope backfill support is feasible and effective.