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基于新疆G577公路项目高含水率软黄土试验土样,采用室内模型试验和数值模拟的方法,进行地聚合物搅拌桩复合地基承载特性的试验研究。结果表明:地聚合物桩体可有效控制复合地基沉降,其沉降随着置换率的增加而逐渐降低;桩间土应力在每级荷载施加的瞬间会显著增加,随后在每级荷载持续的过程中逐渐减小至平稳;而桩顶应力在每级荷载施加的瞬间会略微增加,随后在每级荷载持续的过程中线性增加;桩土应力比n总体呈逐渐减小至平稳的趋势,且最终稳定于7~8;相比置换率,桩长对复合地基沉降影响更大,建议当沉降量较大不能满足设计要求时,宜优先考虑增加桩长。 相似文献
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Using system clustering method to group China’s provinces into 3 new groups according to their housing prices, then establishing a state-space model and applying the Kalman filter calculation, we made a comparative analysis of the influences of different types of monetary policy instruments towards different regional housing prices. The empirical results show that both the quantitative instruments represented by M2 and the pricing instruments represented by real interest rate have increasing influences on different regional housing prices, but the former influence is much stronger than the latter. The influential differences of quantitative instruments to regional housing prices are much greater. It means the higher the regional housing price is, the greater the influence is. Therefore, the central bank shall optimize the combination of monetary policy instruments according to the above characteristics of different types of monetary policy instruments in order to acquire the regulatory target of real estate market. 相似文献
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