共查询到19条相似文献,搜索用时 414 毫秒
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根据土质特点 ,通过大量试验分析比较 ,确定了一种优良的水泥稳定土配合比设计。并针对商开高速公路水泥稳定土施工中出现的问题 ,提出了相应的水泥稳定土施工方法 ,以使其各项性能指标满足设计要求 相似文献
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周智勇 《建设机械技术与管理》2018,(5)
水泥剂量是影响水泥稳定土施工质量的重要因素。水泥含量少的位置,会出现强度不足、松散等不良现象;水泥含量多的位置,不仅造成浪费又会出现大量裂缝。本文以更好的控制水泥稳定土施工中水泥计量精度、提高稳定土施工质量、节约成本为目的,通过建立稳定土厂拌设备水泥计量数学模型分析影响稳定土厂拌设备水泥供给系统精度的因素,对稳定土生产中减少误差的产生具有重要的意义。 相似文献
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水泥石灰稳定土目前越来越广泛地运用于高速公路底基层施工中,为掌握高速公路水泥石灰综合稳定土的施工工艺,文章依托安徽江淮地区某高速公路改善工程,结合水泥石灰综合稳定土的主要特点,详细论述高速公路水泥石灰综合稳定土的施工工艺,为同行业进行水泥石灰综合稳定土工程施工提供一定的实践参考。 相似文献
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随着国民经济的不断增长,科学技术的不断创新,我国道路工程建设发展水平得到了质的飞跃.水泥稳定土是道路工程建设施工中不可或缺的一种半刚性基层材料,当施工人员在利用该材料进行施工时要注意加强对其收缩裂缝的控制治理工作,避免出现水平稳定土基层收缩裂缝问题,充分保障水泥稳定土基层质量.文章将进一步对水泥稳定土基层收缩裂缝的形成与治理展开分析与探讨,旨在为同行业者提供科学参考意见. 相似文献
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在对干硬性水泥稳定土桩所形成的复合地基,其材料性能可靠,工程性质良好,经济指标优于石灰稳定土桩的基础上,对应用干硬性水泥稳定土桩加固路基基床的设计及施工进行了较全面的分析与探讨,并且,基床加固施工能在列车正常运营条件下施工作业,且施工简便,加固质量可靠,具有一定的实用性。 相似文献
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国外在公路、城市道路、机场的路面基层、底基层、较普遍的采用少量(3~5%)水泥稳定土(粒料)的结构,提高了路面技术性能和使用周期。国外在水泥稳定土(粒料)拌和施工中,采用以轮胎式全液压稳定土拌合机就地 相似文献
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本文根据厦门翔安区某道路工程实例,分析了水泥稳定碎石层的施工及质量控制实践过程,介绍水泥稳定土基层施工及质量的控制方法。 相似文献
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针对水泥土在土体加固中的广泛应用,在综合各种文献的基础上,介绍了水泥土的含水量、相对密度和重度等物理性质,对水泥土的力学性质及其影响因素进行了总结分析,为以后的岩土工程设计及施工提供依据。 相似文献
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Cement-stabilized soil bases have been widely used in expressways due to its high strength, appropriate stiffness, good water resistance, and frost resistance. So far, the structural characteristics and mechanical behaviors of cement-stabilized soil bases were not investigated so much. In this paper, the 3D elastic-plastic finite element method (FEM) was used to analyze the mechanical behaviors and structural characteristics of cement-stabilized soil bases from construction to operation. The pavement filling and the traffic loading processes were simulated, and a contact model was used to simulate the contact behavior between each layer of the pavement. Considering the construction process, the structural characteristics and mechanical behaviors of cement-stabilized soil bases were studied under asphalt-concrete pavement conditions. Furthermore, the general rules of deformations and stresses in cement-stabilized soil bases under different conditions were discussed, and some suggestions were put forward for the design and construction of cement-stabilized soil bases. 相似文献
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Cement-stabilized soil bases have been widely used in expressways due to its high strength, appropriate stiffness, good water
resistance, and frost resistance. So far, the structural characteristics and mechanical behaviors of cement-stabilized soil
bases were not investigated so much. In this paper, the 3D elastic-plastic finite element method (FEM) was used to analyze
the mechanical behaviors and structural characteristics of cement-stabilized soil bases from construction to operation. The
pavement filling and the traffic loading processes were simulated, and a contact model was used to simulate the contact behavior
between each layer of the pavement. Considering the construction process, the structural characteristics and mechanical behaviors
of cement-stabilized soil bases were studied under asphalt-concrete pavement conditions. Furthermore, the general rules of
deformations and stresses in cement-stabilized soil bases under different conditions were discussed, and some suggestions
were put forward for the design and construction of cement-stabilized soil bases. 相似文献
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通过分析水泥加固土的机理,结合多年公路工程施工实践得出的经验,较为系统地总结了水泥土搅拌桩的施工工艺及技术要点,可供公路工程特殊路基处理施工时参考。 相似文献
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分析了某工程基坑设计在实践运行中变形过大的原因,对水泥土墙体从土力学角度进行了强度验算,阐述了影响复合土钉墙水平位移的因素,总结了基坑设计和施工的经验,给出了合理的淤泥质土基坑设计方案. 相似文献
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