介绍： 为了解决旧混凝土路面因修复而长时间封闭道路的难题，本文研究了水泥混凝土路面预制拼装快速修复技术。建立预制拼装路面结构模型并采用有限元进行分析，得出了平面尺寸、厚度与基层类型对预制拼装板的荷载应力和挠度的影响规律，运用力学理论与有限元计算预制板运输、吊装、运营过程中的应力，结果表明，素预制拼装板满足运输安全，吊装、运营过程中应力较大。在此基础上设计预制板块的配筋，并比较了配筋预制板与素混凝土预制板的承载力。根据槽内回填早强混凝土的性能，通过外加剂与水泥适应性试验、强度试验、干缩试验、层间粘结强度试验等，确定水槽内回填早强混凝土的配合比。 在预制板结构分析与设计、槽内回填混凝土研究的基础上，设计可移动式模板、提出预制板厚度方法与质量控制标准、总结旧路面板清除与开槽及基层找平等吊装前施工技术。最后，研究预制拼装施工技术，其中包括分析板块运输与吊装中的特点，首次提出预制板调平技术，实践结果表明调平效果良好，探讨槽内回填与板底灌浆工艺，总结接缝处治技术。 摘要····························································································································ⅰ ABSTRACT·············································································································ⅱ 第一章绪论···············································································································1 §1-1 研究背景··············································································································································1 §1-2 预制拼装快速修复技术特点···············································································································1 §1-3 国内外研究与应用概况·······················································································································2 1-3-1 国外研究与应用概况·····················································································································2 1-3-2 国内研究与应用概况·····················································································································6 §1-4 主要研究内容与方法···························································································································7 第二章预制拼装板结构分析与设计······································································9 §2-1 预制拼装板结构分析···························································································································9 2-1-1 板体结构分析模型·························································································································9 2-1-2 平面尺寸对荷载应力和挠度的影响····························································································10 2-1-3 板体厚度对荷载应力和挠度的影响····························································································12 2-1-4 基层类型对荷载应力和挠度的影响····························································································15 §2-2 预制板配筋设计································································································································17 2-2-1 板块运输受力分析·······················································································································17 2-2-2 板块吊装应力分析·······················································································································18 2-2-3 基于吊装应力的板体配筋设计····································································································19 2-2-4 基于不均匀支承应力的板体配筋设计························································································20 2-2-5 不均匀支承预制板的配筋与素预制板路面承载能力分析·························································25 §2-3 本章小结············································································································································26 第三章槽内回填早强混凝土试验研究································································28 §3-1 早强混凝土与原材料性能要求·········································································································28 3-1-1 槽内回填混凝土技术要求···········································································································28 3-1-2 试验原材料性能···························································································································28 §3-2 水泥与混凝土外加剂适应性试验·····································································································30 3-2-1 试验方法·······································································································································30 3-2-2 试验结果及分析···························································································································30 §3-3 外加剂与掺合料掺量试验·················································································································31 3-3-1 外加剂掺量初步优选···················································································································31 3-3-2 矿物掺合料掺量的初步优选·······································································································33 §3-4 早强混凝土配合比试验·····················································································································34 3-4-1 早强混凝土试验强度结果分析····································································································35 3-4-2 早强混凝土的干缩性能研究·······································································································40 3-4-3 新旧混凝土粘结性能试验研究····································································································42 §3-5 本章小结············································································································································44 第四章预制板吊装前施工技术研究····································································45 §4-1 预制板块的预制技术·························································································································45 4-1-1 模板设计与制作···························································································································45 iii 4-1-2 板块预制·······································································································································49 §4-2 旧板的清除········································································································································50 4-2-1 液压式清除···································································································································50 4-2-2 切割分块吊装·······························································································································51 §4-3 旧板开槽技术·····································································································································52 §4-4 基层处治与找平技术·························································································································53 4-4-1 基层处治·······································································································································53 4-4-2 基层找平·······································································································································54 §4-5 本章小结············································································································································56 第五章预制板拼装施工技术研究········································································57 §5-1 预制板运输与吊装·····························································································································57 §5-2 板块调平技术·····································································································································59 §5-3 板块灌浆与槽内回填混凝土施工技术······························································································61 5-3-1 板块灌浆施工技术·······················································································································61 5-3-2 槽内回填施工技术·······················································································································62 §5-4 接缝处理技术·····································································································································62 §5-5 本章小结············································································································································63 第六章结论与展望·································································································64 §6-1 结论····················································································································································64 §6-2 创新点················································································································································65 §6-3 展望····················································································································································65 参考文献···················································································································66 致谢····························································································································69
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