{
  "units": "m",
  "axes": "x桥向，y横向，z竖向；Three映射(x,z,-y)",
  "evidence_type": "teaching_assumption",
  "bridge": {
    "supports": [
      0,
      30,
      60
    ],
    "spans": [
      30,
      30
    ],
    "extent": [
      -1.8,
      61.8
    ],
    "width": 12,
    "girderY": [
      -4.8,
      -2.4,
      0,
      2.4,
      4.8
    ],
    "bottom": 7,
    "depth": 1.8,
    "capTop": 6.7,
    "cap": [
      4.4,
      12.8,
      0.5
    ],
    "bearing": [
      0.7,
      0.6,
      0.12
    ],
    "pedestal": [
      0.9,
      0.9,
      0.18
    ]
  },
  "anchor": {
    "id": "A",
    "support": 30,
    "girderY": -4.8
  },
  "replacement": {
    "physicalLift": 0.004,
    "displayFactor": 50,
    "displayLift": 0.2
  },
  "clearance": {
    "permanentRise": 2,
    "installationOverlift": 0.06,
    "displayFactor": 1,
    "waterLevel": 0,
    "originalClearance": 7,
    "finalClearance": 9,
    "boat": {
      "length": 18,
      "beam": 5.5,
      "draft": 1,
      "airDraft": 8
    },
    "stepCount": 8
  },
  "notDesigned": [
    "实桥顶升点数量、千斤顶能力及同步容差",
    "梁端局部承压、临时支承、基础与施工阶段承载力",
    "接高构造配筋、连接、养护及验收条件",
    "引桥接线、管线、伸缩装置及交通组织",
    "通航设计水位、代表船型、航道净宽、防撞与通航许可"
  ],
  "notAsBuilt": true
}