中文摘要：

为明确主缆与索鞍间侧向力分布模式并为理论研究提供支撑,需开展针对性试验研究。通过在模型设计、加载方式及测试方法等方面的探索实践,形成了可行的侧向力试验方案。根据测试结果,研究了侧向力的分布模式及变化规律,并验证了理论研究成果的准确性。研究表明：侧向力与索力间基本呈线性变化关系,即在通常范围内增加索力所引起的接触挤压力的增大对鞍槽内离散体间的接触关系及传力机理并无明显影响;侧向力在层间分布差异明显,且不同高度处的侧向力随索力的变化率不同,说明侧向力与径向力间并非Janssen公式所述的固定比值关系;侧向力发展具有单向不可逆性;钢丝排列高宽比越大,其对应高度处的侧向力越小,但沿全高范围内的侧向合力越大;试验结果与理论结果吻合较好,证明所建立的主缆侧向力理论计算方法与公式是准确的。

英文摘要：

To clarify the distribution pattern of lateral force between main cable and cable saddle and provide support for theoretical study, it is necessary to conduct targeted experiments. Based on the exploration and practice in model design, loading and testing approaches, feasible experimental schemes for lateral force were proposed. By analyzing the test results, the distribution pattern and change rule of lateral force were studied, and the theoretical research results were validated. The results show that, the relationship between cable force and lateral force basically appears to be linear, that is, the increase of contact force from increasing the cable force in the normal rang has no obvious influence on the contact relationships and force transfer mechanism between discrete bodies; the differences in the distributions of lateral forces between layers are obvious, and the change rates of lateral force with cable force are different at different height, indicating that the ratio between lateral force and the radial force can not be depicted to be constant as descripted by the Janssen formula; the width of the development of lateral force is one-way and irreversible ; the larger the ratio between the height and arranged steel wires, the smaller the lateral force at the corresponding height, but the greater the resultant lateral force along the height; the experimental results agree well with the theoretical results, validating that the proposed method and formula for calculating the lateral force of the main cable is reasonable.