{
  "schema": "bridge-dialogue-timeline/2",
  "status": "audio_generated",
  "id": "C01",
  "duration": 98.9105625,
  "mp3_sha256": "f1f2101816ee25b548cc72f56b6980ca848edf6832dadccb093456c294397e34",
  "wav_sha256": "07ef68f8c28d7e3d9f645b17cdcda00067df36dffd39e57d10a7599f201061ba",
  "turns": [
    {
      "id": "C01-01",
      "speaker": "小周",
      "role": "好奇与猜测",
      "text": "这儿一排梁，还没上桥？它们就这样放着？",
      "beat": "girder_stockyard",
      "phase": "guess",
      "progressStart": 0,
      "progressEnd": 1,
      "stage": 1,
      "stages": [
        1
      ],
      "view": "overall",
      "viewLabel": "总体观察",
      "focus": "先找一片梁，看看它与地面的接触。",
      "keywords": [
        "存梁场",
        "梁底"
      ],
      "correction": "",
      "datum": null,
      "start": 0.0,
      "end": 4.557520833333333,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "bdb4836911ba107c3773344baf913cb34883edceefb671e15483608ab78bdb3c"
    },
    {
      "id": "C01-02",
      "speaker": "阿宁",
      "role": "引导与解释",
      "text": "这是存梁场。先看梁底，两处垫块在哪里？",
      "beat": "girder_storage_support",
      "phase": "observe",
      "progressStart": 0,
      "progressEnd": 0.25,
      "stage": 1,
      "stages": [
        1
      ],
      "view": "support",
      "viewLabel": "支承近看",
      "focus": "沿梁底找出两处垫块的位置。",
      "keywords": [
        "梁底",
        "垫块"
      ],
      "correction": "",
      "datum": null,
      "start": 4.787520833333334,
      "end": 10.076333333333332,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "1be57308196804c4ac2822c8985dadc666f30548b989f57903706f5e1acaf940"
    },
    {
      "id": "C01-03",
      "speaker": "小周",
      "role": "好奇与猜测",
      "text": "在靠近两端的地方。垫在正中间不是更省事？",
      "beat": "girder_storage_support",
      "phase": "guess",
      "progressStart": 0.25,
      "progressEnd": 0.5,
      "stage": 1,
      "stages": [
        1
      ],
      "view": "support",
      "viewLabel": "支承近看",
      "focus": "想一想：只换垫块的位置，其他事情会变吗？",
      "keywords": [
        "支点位置",
        "中间"
      ],
      "correction": "",
      "datum": null,
      "start": 10.306333333333333,
      "end": 15.77525,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "6cb1e3d24224d4d9cf986c293d5377404cd89e04f84858903b678783d1e94fee"
    },
    {
      "id": "C01-04",
      "speaker": "阿宁",
      "role": "引导与解释",
      "text": "支点位置一变，梁的受力就变。这里用两处支点，实际位置要按存梁方案确定。",
      "beat": "girder_storage_support",
      "phase": "explain",
      "progressStart": 0.5,
      "progressEnd": 1,
      "stage": 1,
      "stages": [
        1
      ],
      "view": "support",
      "viewLabel": "支承近看",
      "focus": "对照两处支点，理解它们也是受力条件。",
      "keywords": [
        "支点位置",
        "受力条件"
      ],
      "correction": "存梁支点不能只按摆放方便来选。",
      "datum": {
        "label": "画面中的存梁支点",
        "value": "2 处；位置仅为教学示意",
        "source": "模型资料 · 施工示意"
      },
      "start": 16.00525,
      "end": 23.240104166666665,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "35474d7c22514ee2f43871de732b3fb1bd4502d01176889115e8c8e4e0ac730d"
    },
    {
      "id": "C01-05",
      "speaker": "小周",
      "role": "好奇与猜测",
      "text": "明白，垫块不能随手挪。现在能把它吊走了？",
      "beat": "girder_lifting",
      "phase": "revise",
      "progressStart": 0,
      "progressEnd": 0.05,
      "stage": 2,
      "stages": [
        2
      ],
      "view": "construction",
      "viewLabel": "施工观察",
      "focus": "留意垫块和梁之间的间隙。",
      "keywords": [
        "存梁支点",
        "起吊"
      ],
      "correction": "支点位置是有条件的，不能随手改变。",
      "datum": null,
      "start": 23.470104166666665,
      "end": 28.58425,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "a0778645d8203a4b4fb7f64fd794b71c394e3caa33043f8ef8beb3e0123aabce"
    },
    {
      "id": "C01-06",
      "speaker": "阿宁",
      "role": "引导与解释",
      "text": "看吊索收紧，梁正离开存梁支点。",
      "beat": "girder_lifting",
      "phase": "observe",
      "progressStart": 0.05,
      "progressEnd": 0.45,
      "stage": 2,
      "stages": [
        2
      ],
      "view": "construction",
      "viewLabel": "施工观察",
      "focus": "梁离开垫块时，找出仍与梁相连的东西。",
      "keywords": [
        "吊索",
        "间隙"
      ],
      "correction": "",
      "datum": null,
      "start": 28.81425,
      "end": 33.31220833333333,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "041ecb1b524955691a457e0e34cfa4edc60de6293d3137f7f36822aee3699c8a"
    },
    {
      "id": "C01-07",
      "speaker": "小周",
      "role": "好奇与猜测",
      "text": "咦，支着它的，换成了吊索？",
      "beat": "girder_lifting",
      "phase": "guess",
      "progressStart": 0.45,
      "progressEnd": 0.65,
      "stage": 2,
      "stages": [
        2
      ],
      "view": "construction",
      "viewLabel": "施工观察",
      "focus": "顺着吊索往上看。",
      "keywords": [
        "吊索",
        "支承变化"
      ],
      "correction": "",
      "datum": null,
      "start": 33.542208333333335,
      "end": 37.39029166666667,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "d4341c69db53d944657c6c022dc7d6a78bef06c10791f0fa83badef26c6fc656"
    },
    {
      "id": "C01-08",
      "speaker": "阿宁",
      "role": "引导与解释",
      "text": "对。还要看吊点和梁身姿态，起吊是一套新的支承条件。",
      "beat": "girder_lifting",
      "phase": "explain",
      "progressStart": 0.65,
      "progressEnd": 1,
      "stage": 2,
      "stages": [
        2
      ],
      "view": "construction",
      "viewLabel": "施工观察",
      "focus": "比较起吊前后，梁的支承位置与姿态。",
      "keywords": [
        "吊点",
        "姿态",
        "支承条件"
      ],
      "correction": "从存放到起吊，支承条件发生变化。",
      "datum": {
        "label": "当前支承状态",
        "value": "存梁支点 → 吊装支承",
        "source": "模型资料 · 施工示意"
      },
      "start": 37.62029166666667,
      "end": 44.04697916666667,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "d88b5aa4800e11ede08ccaa4c0267115285e87bf62088238090226a826ae5a7d"
    },
    {
      "id": "C01-09",
      "speaker": "小周",
      "role": "好奇与猜测",
      "text": "往桥墩上放了！底下碰到支座，就能松钩吧？",
      "beat": "girder_landing",
      "phase": "guess",
      "progressStart": 0,
      "progressEnd": 0.85,
      "stage": 2,
      "stages": [
        2
      ],
      "view": "support",
      "viewLabel": "支承近看",
      "focus": "先看梁与支座接触，暂不判断是否能松钩。",
      "keywords": [
        "落梁",
        "支座"
      ],
      "correction": "",
      "datum": null,
      "start": 44.27697916666666,
      "end": 49.606375,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "0aefc415beba64ddd20b452c402eaffb8d4f6f5f87f097d79403bb2fd7d4ca2a"
    },
    {
      "id": "C01-10",
      "speaker": "阿宁",
      "role": "引导与解释",
      "text": "先别急。从梁端看，它是高高的、窄窄的一片。",
      "beat": "girder_landing",
      "phase": "observe",
      "progressStart": 0.85,
      "progressEnd": 1,
      "stage": 2,
      "stages": [
        2
      ],
      "view": "support",
      "viewLabel": "支承近看",
      "focus": "从梁端观察单片梁的高、宽和两侧空间。",
      "keywords": [
        "梁端",
        "单片梁"
      ],
      "correction": "",
      "datum": null,
      "start": 49.836375,
      "end": 55.73858333333333,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "c9f40eecbd74dfffae52f4f9fa709336e155e5086eb7fa143231378076721eaa"
    },
    {
      "id": "C01-11",
      "speaker": "小周",
      "role": "好奇与猜测",
      "text": "啊，下面托住了，两边却还是空的。",
      "beat": "girder_lateral_stability",
      "phase": "observe",
      "progressStart": 0,
      "progressEnd": 0,
      "stage": 2,
      "stages": [
        2
      ],
      "view": "support",
      "viewLabel": "支承近看",
      "focus": "看两侧是否已经出现约束。",
      "keywords": [
        "两侧",
        "约束"
      ],
      "correction": "",
      "datum": null,
      "start": 55.968583333333335,
      "end": 60.31397916666667,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "e685e2ba3e6ba81824f7ac1f76f3562d9ff73e872f053c82fe2a9d363c0a7546"
    },
    {
      "id": "C01-12",
      "speaker": "阿宁",
      "role": "引导与解释",
      "text": "对。这时还要落实横向临时稳定，不能只看竖向落稳。",
      "beat": "girder_lateral_stability",
      "phase": "explain",
      "progressStart": 0,
      "progressEnd": 0.5,
      "stage": 2,
      "stages": [
        2
      ],
      "view": "support",
      "viewLabel": "支承近看",
      "focus": "观察横向临时约束逐步就位。",
      "keywords": [
        "横向稳定",
        "临时约束"
      ],
      "correction": "竖向落稳，不等于横向稳定已经落实。",
      "datum": {
        "label": "这一轮观察条件",
        "value": "单片梁落位后的横向临时约束",
        "source": "模型资料 · 施工示意"
      },
      "start": 60.54397916666667,
      "end": 66.64604166666666,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "25ddff0fb1c7e8a7cb47749e1de59103ebd87b4bcd8764d937be8249c34dfdf8"
    },
    {
      "id": "C01-13",
      "speaker": "小周",
      "role": "好奇与猜测",
      "text": "就是先让它别往旁边倒，再进入下一步？",
      "beat": "girder_lateral_stability",
      "phase": "revise",
      "progressStart": 0.5,
      "progressEnd": 0.75,
      "stage": 2,
      "stages": [
        2
      ],
      "view": "support",
      "viewLabel": "支承近看",
      "focus": "确认侧向约束后，再回看吊装支承。",
      "keywords": [
        "侧向约束",
        "下一步"
      ],
      "correction": "落梁后的侧向稳定也需要检查。",
      "datum": null,
      "start": 66.87604166666667,
      "end": 70.37233333333333,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "64e7460464601063d101e5597ec959caed4af74eea32b14565d347cb06973548"
    },
    {
      "id": "C01-14",
      "speaker": "阿宁",
      "role": "引导与解释",
      "text": "是。临时支撑和吊钩的转换，必须按架梁方案进行。",
      "beat": "girder_lateral_stability",
      "phase": "explain",
      "progressStart": 0.75,
      "progressEnd": 1,
      "stage": 2,
      "stages": [
        2
      ],
      "view": "support",
      "viewLabel": "支承近看",
      "focus": "把临时支撑、吊钩和梁一起观察。",
      "keywords": [
        "临时支撑",
        "支承转换"
      ],
      "correction": "支承转换需要按架梁方案进行。",
      "datum": {
        "label": "画面表示范围",
        "value": "稳定措施与转换顺序示意；未做稳定计算",
        "source": "模型资料 · 施工示意"
      },
      "start": 70.60233333333333,
      "end": 76.715,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "5684e1cb9d5b3ef7c3dd3d12803bb659ed6a571aeee263389337af204317d003"
    },
    {
      "id": "C01-15",
      "speaker": "小周",
      "role": "好奇与猜测",
      "text": "旁边的梁也来了，这些横着的构件做什么？",
      "beat": "girder_transverse_connection",
      "phase": "guess",
      "progressStart": 0,
      "progressEnd": 0.3,
      "stage": 3,
      "stages": [
        3
      ],
      "view": "deck",
      "viewLabel": "桥面近看",
      "focus": "找出新出现的横向构件。",
      "keywords": [
        "相邻梁",
        "横向构件"
      ],
      "correction": "",
      "datum": null,
      "start": 76.945,
      "end": 80.90035416666667,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "a0a9f44e22b4beb4f420339590ba1b72f4c3ed976df4e2cd525835667864733f"
    },
    {
      "id": "C01-16",
      "speaker": "阿宁",
      "role": "引导与解释",
      "text": "它们把相邻主梁联系起来，让梁之间能传递力。",
      "beat": "girder_transverse_connection",
      "phase": "explain",
      "progressStart": 0.3,
      "progressEnd": 0.8,
      "stage": 3,
      "stages": [
        3
      ],
      "view": "deck",
      "viewLabel": "桥面近看",
      "focus": "沿横向构件，从一片梁看向另一片梁。",
      "keywords": [
        "横向连接",
        "传力"
      ],
      "correction": "各片梁通过连接形成相互传力的条件。",
      "datum": {
        "label": "主模型构造",
        "value": "双幅，共 30 片 T 梁",
        "source": "模型资料 · 梁桥原构造参数"
      },
      "start": 81.13035416666666,
      "end": 86.80125,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "41ddb0ef4c15d0b5492cdeb167cb461e7230ccc1f72bd88b26f7ba902dbc19b0"
    },
    {
      "id": "C01-17",
      "speaker": "小周",
      "role": "好奇与猜测",
      "text": "原来不是吊上去就完工。支点、吊索、支座，我得一路盯着。",
      "beat": "girder_transverse_connection",
      "phase": "revise",
      "progressStart": 0.8,
      "progressEnd": 0.9,
      "stage": 3,
      "stages": [
        3
      ],
      "view": "overall",
      "viewLabel": "总体观察",
      "focus": "回想这片梁经历过的三种支承状态。",
      "keywords": [
        "支点",
        "吊索",
        "支座"
      ],
      "correction": "安装过程需要连续跟踪支承条件。",
      "datum": null,
      "start": 87.03125,
      "end": 93.14704166666667,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "58f03820e848ec9fd7599a5e8743559dba8f83d7cba036dedcb961d4740f5b0a"
    },
    {
      "id": "C01-18",
      "speaker": "阿宁",
      "role": "引导与解释",
      "text": "再加上横向稳定。你可以暂停，沿着这条变化重新看一遍。",
      "beat": "girder_transverse_connection",
      "phase": "revise",
      "progressStart": 0.9,
      "progressEnd": 1,
      "stage": 3,
      "stages": [
        3
      ],
      "view": "overall",
      "viewLabel": "总体观察",
      "focus": "暂停并回到任一观察点，检查竖向和横向条件。",
      "keywords": [
        "横向稳定",
        "暂停观察"
      ],
      "correction": "承托住梁与稳定住梁，需要分别观察。",
      "datum": null,
      "start": 93.37704166666667,
      "end": 98.9105625,
      "time_basis": "measured_pcm_delivery_after_edge_trim_and_optional_tempo",
      "source_sha256": "533e2aa92adb23405534ae3d161c29c6f183a0aaa699baa3be59ad8b5e516810"
    }
  ]
}