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对某地下车库混凝土拱形结构方案的可行性和优化进行了全面和深入的研究,本着由简单到复杂、由局部到整体的分析原则,依次采用梁单元模型、多跨壳单元模型以及结构整体模型分别进行了计算分析。结果表明,拱形结构方案是合理可行的,最优方案为上部混凝土拱采用“拱梁+拱板”的形式,拱梁每隔一定间距设置,两端支撑在挡土墙外侧斜撑和中柱上,下部底板结构同样采用“底梁+底板”的形式,底梁与相应的斜撑和中柱连成整体,充当上部拱结构的拉杆。此外通过对结构整体模型的分析,对构件设计提出了合理的设计建议。
The feasibility and optimization of an underground garage concrete arch structure are studied comprehensively and deeply. Based on the analysis principle from simple to complex and from part to whole, the beam element model, multi-span element model and structure The overall model were calculated and analyzed separately. The results show that the arched structure scheme is reasonable and feasible. The optimal scheme is that the upper concrete arch adopts the form of “arch beam + arch plate”, the arch beams are arranged at regular intervals, And on the column, the lower floor structure also used “bottom beam + floor ” form, the bottom beam and the corresponding bracing and the central pillar into a whole, as the upper arch structure of the rod. In addition, through the analysis of the overall structure of the model, put forward reasonable design suggestions on the component design.