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分层回填施工过程竹缠绕复合管涵力学性能研究

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为解决竹缠绕复合管涵在分层回填的施工控制问题,并研究此过程中管涵的力学性能,文中通过现场试验,监测2m埋深竹缠绕复合管涵施工过程变形与与力学响应,建立了基于连续壳复合材料叠层的有限元分析模型.数据分析表明,土压力、管底沉降均随回填高度增加线性增大,浅埋阶段,受施工扰动影响,实测值偏大;回填完成后,管涵的计算与模拟竖向变形率分别为1.32%、1.57%,均满足规范要求.建议竹缠绕复合管涵管底沉降与管涵横截面变形可作为施工质量控制指标;所建立模型能较为保守地预测管土响应,可为后续研究提供参考.
STUDY ON THE MECHANICAL PROPERTIES OF BAMBOO WINDING COMPOSITE PIPE CULVERT DURING LAYERED BACKFILL CONSTRUCTION PROCESS
This paper addresses the construction control issues of bamboo winding composite pipe culverts during layered backfilling. We investigate the mechanical properties throughout this process by monitoring the deformation and mechanical response of a 2-meter buried depth bamboo winding composite pipe culvert through field measure-ments. A finite element analysis model based on a continuous shell composite laminate is established. The results show that earth pressure and pipe bottom settlement both linearly increase with the increase in backfill height. Dur-ing the shallow burial stage,due to the influence of construction disturbance,the measured values are relatively high-er. After completion of backfilling,the calculated and simulated vertical deformation rates of the pipe culvert are 1.32% and 1.57%,respectively,meeting the code requirements. The pipe bottom settlement and cross-sectional de-formation of the bamboo winding composite pipe culvert can be served as indicators for construction quality control. The model conservatively predicts the pipe-soil response,providing the reference for future studies.

bamboo winding composite pipe (BWCP)layered backfillcontinuous shell composite laminationearth pressure

董佳霖、周宇、陈玥、马芹纲、夏晋

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浙江数智交院科技股份有限公司,杭州310030

浙江大学建筑工程学院,杭州310058

竹缠绕复合管涵 分层回填 连续壳复合材料叠层 土压力

浙江省交通厅科技项目

202227

2024

低温建筑技术
黑龙江省寒地建筑科学研究院

低温建筑技术

影响因子:0.237
ISSN:1001-6864
年,卷(期):2024.46(7)