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ASCE 28-00 | Standard Practice for Direct Design of Precast Concrete Box Sections for Jacking in Trenchless Construction
ASCE 28-00《非开挖施工顶进用预制混凝土箱形截面直接设计标准规程》,发布于2001年,是对前期相关预制混凝土箱形结构设计标准的优化完善版本,核心为非开挖施工场景中顶进用预制混凝土箱形截面的设计与安装提供系统技术框架,涵盖多维度关键内容:设计方法上,采用直接设计法,充分考虑箱形截面与土体或灌浆层的相互作用,以此确定埋地箱形截面承受的荷载及土压力分布,同时纳入顶进施工产生的纵向荷载;结构计算上,基于上述荷载参数,计算箱形截面墙体与底板的环向弯矩、推力及剪力,进而确定所需配筋量;设计标准上,明确结构性能要求(含环向受弯、推力及剪切强度)、裂缝宽度控制指标、顶进纵向推力限值,以及构件搬运与安装阶段的技术要求。该规程适用于输送污水、工业废水、雨水及排水的管道工程,同时可用于市政公用设施及检修通道等场景的非开挖顶进预制混凝土箱形结构设计与施工,由美国土木工程师协会(ASCE)制定,文档页数为62页,提供安全PDF格式供即时下载(参考价格55美元),为非开挖顶进施工中预制混凝土箱形结构的结构安全、施工合规性及工程适用性提供重要技术依据。

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