中文摘要：

针对多仓筒式结构施工阶段沉降控制较难的问题,对多仓筒式结构施工沉降阶段仓内外的土体压力对筒式结构沉降的影响进行理论分析。将筒式结构沉降分为仓内土体沉降和结构下部地基沉降两部分,并针对这两部分沉降分别建立了对应的理论计算模型：一个是仓内土体压力计算模型,应用该模型分析了多仓筒式结构施工阶段仓内土体压力的分布以及仓内土体的沉降;另一个是叠加链杆法地基沉降模型,应用该模型对不均匀受力地基沉降进行计算分析。研究结果表明：多仓筒式结构的沉降与仓内外土体压力的分布状况关系密切;在同一荷载工况下,理论模型的计算结果与数值模拟、模型试验结果比较吻合,证明所建立的多仓筒式结构沉降计算模型具有较高的计算精度,可以用来精确计算多仓筒式结构的沉降计算。研究结果为多仓筒式结构施工阶段的沉降控制提供了理论基础,并为多仓筒式结构的设计和施工提供了理论参考。

英文摘要：

In order to solve the problem of difficult control of multi-position cylinder＇s settlement in construction stage,this paper analyzed theoretically the pressure of soil inside and outside positions to find out its affection to the settlement of multi-position cylinder in construction stage.The settlement of soil in construction stage was divided into two parts.One was the settlement of soil in cabins,and the other was the foundation settlement.Two theoretical models for the two parts of settlement were established.One is a computational model of the soil pressure in the cabins of the structure,which was used to analyze the settlement and pressure distribution of the soil in the cabins;the other is a non-uniform foundational settlement model of the multi-position cylinder by using improved superimposed bar method,which was used to analyzed uneven settlement of foundation.The calculated results of the models show that the settlement of soil was closelyrelated to the distribution of soil pressure inside and outside of positions.In the same load conditions,the calculation results of theoretical models were identical to the results of numerical calculation and experimental data.The models established in this paper were verified to be correct and have higher accuracy.The models can be used for calculating the settlement of multi-position cylinder.The research results in this paper provided theoretical reference for settlement control and the design of multi-position structure.