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为解决传统缆索吊施工中存在的吊装干扰和施工避让等问题,实现缆索吊的双向移动.将主索与地锚系统分离,并通过中间可移动设备将主索力传递到地锚系统中,地锚系统作为整个系统的主要受力部分,关系到整个桥梁的安全,因此需要对其进行结构设计以及稳定分析.双向移动缆索吊依托托巴大桥实际工程并通过在试验过程中的不断改进,最终成功运行,测得地锚梁水平最大变形0.001 73m,竖向变形-0.000 52 m,测试结果与稳定分析之间的差值不超过±10%.结果表明,地锚系统结构设计中受力分析采用的假设及计算方法达到实际工程的要求,作为判断稳定性标志的地锚梁与岩层的接触面无相对位移,地锚梁整体稳定性良好,在实际受力过程中作为弹性体产生弹性变形.
In order to solve the problems of hoisting jamming and construction avoidance in the traditional cable hoist construction and so on, the two-way movement of the cable hoist is realized, the main cable and the ground anchor system are separated, and the main cable force is transmitted to the ground anchor system through the intermediate movable equipment, As the main force of the whole system, the ground anchor system is related to the safety of the whole bridge, so it needs to be structurally designed and analyzed stably.Two-way mobile cable crane relies on the actual engineering of the Toba Bridge and through the continuous improvement in the test process, Finally the successful operation, the measured maximum displacement of the anchor beam level 0.001 73m, vertical deformation -0.000 52 m, the difference between the test results and the stability analysis does not exceed ± 10% .The results show that the ground anchor system structure design force Analysis assumptions and calculation methods to meet the requirements of the actual project, as a marker to determine the stability of the anchor beam and rock contact surface without relative displacement, the overall stability of the anchor beam is good, in the actual process of elastic as a flexible body to produce elasticity Deformation.