Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Settlement calculation method considering influence of soft soil foundation prepressing excavation and backfilling construction
The invention discloses a settlement calculation method considering the influence of soft soil foundation prepressing excavation and backfilling construction. The method comprises the steps that the site prepressing treatment depth, the load size and the post-treatment consolidation degree are analyzed, the site elevation change condition after prepressing, excavation and backfilling construction is determined, the total consolidation settlement of a soil filling layer, the residual total consolidation settlement, caused by backfilling, of a soft soil layer above the prepressing treatment depth and the total consolidation settlement of a soft soil layer below the prepressing treatment depth are calculated through a linear compression modulus method and a nonlinear compression modulus method correspondingly, finally, the average consolidation degree of the soft soil layer at different stages is calculated according to the backfilling process, and the total consolidation settlement and the settlement at all the stages are calculated and compared with the site monitoring result. Compared with an existing method considering the complex stress history or calculating the settlement change in the construction process through a finite element tool, the settlement calculation method can be applied to various complex working conditions considering the influence of prepressing backfilling and excavation, the accuracy is improved, implementation is convenient, and the settlement calculation method can be widely applied to the technical field of constructional engineering.
本发明公开了一种考虑软土地基预压开挖回填施工影响的沉降计算方法，方法包括：分析场地预压处理深度、荷载大小、处理后固结度，确定预压、开挖及回填施工后场地的标高变化情况，分别采用线性和非线性压缩模量法计算填土层总固结沉降、预压处理深度以上由回填引起的软土层的剩余总固结沉降及预压处理深度以下软土层总固结沉降，最终根据回填过程计算软土层不同阶段的平均固结度，对总固结沉降和各阶段沉降进行计算，并与现场监测结果进行对比。相较于现有考虑复杂应力历史或通过有限元工具计算施工过程沉降变化的方法，本发明能够应用于考虑预压回填及开挖影响的多种复杂工况下，提高了精确度且便于实施，可广泛应用于建筑工程技术领域。
Settlement calculation method considering influence of soft soil foundation prepressing excavation and backfilling construction
The invention discloses a settlement calculation method considering the influence of soft soil foundation prepressing excavation and backfilling construction. The method comprises the steps that the site prepressing treatment depth, the load size and the post-treatment consolidation degree are analyzed, the site elevation change condition after prepressing, excavation and backfilling construction is determined, the total consolidation settlement of a soil filling layer, the residual total consolidation settlement, caused by backfilling, of a soft soil layer above the prepressing treatment depth and the total consolidation settlement of a soft soil layer below the prepressing treatment depth are calculated through a linear compression modulus method and a nonlinear compression modulus method correspondingly, finally, the average consolidation degree of the soft soil layer at different stages is calculated according to the backfilling process, and the total consolidation settlement and the settlement at all the stages are calculated and compared with the site monitoring result. Compared with an existing method considering the complex stress history or calculating the settlement change in the construction process through a finite element tool, the settlement calculation method can be applied to various complex working conditions considering the influence of prepressing backfilling and excavation, the accuracy is improved, implementation is convenient, and the settlement calculation method can be widely applied to the technical field of constructional engineering.
本发明公开了一种考虑软土地基预压开挖回填施工影响的沉降计算方法，方法包括：分析场地预压处理深度、荷载大小、处理后固结度，确定预压、开挖及回填施工后场地的标高变化情况，分别采用线性和非线性压缩模量法计算填土层总固结沉降、预压处理深度以上由回填引起的软土层的剩余总固结沉降及预压处理深度以下软土层总固结沉降，最终根据回填过程计算软土层不同阶段的平均固结度，对总固结沉降和各阶段沉降进行计算，并与现场监测结果进行对比。相较于现有考虑复杂应力历史或通过有限元工具计算施工过程沉降变化的方法，本发明能够应用于考虑预压回填及开挖影响的多种复杂工况下，提高了精确度且便于实施，可广泛应用于建筑工程技术领域。
Settlement calculation method considering influence of soft soil foundation prepressing excavation and backfilling construction
一种考虑软土地基预压开挖回填施工影响的沉降计算方法
XU CHUANBAO (Autor:in) / ZHENG JUNJIE (Autor:in)
18.01.2022
Patent
Elektronische Ressource
Chinesisch
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