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| 浅谈软土地基的处理措施 摘要 21世纪以来，中国的软基处理技术飞速发展，这项技术在公路施工软基处理中应用广泛。众所周知，公路建设周期是具有非常严格的要求的，而且公路建设往往伴随着大量的突发事件让人措手不及，合适的软土地基处理方案对公路建设项目的实施至关重要。笔者以廊沧高速公路为背景，分析其软土地基在高速公路建设上存在的问题，针对软土地基上一次铺设先进路面（早期铺装过渡路面）的技术问题，结合数据列出软土地基的处理措施与建议。主要有表层处理法，降低地下水，灌浆法等一些处理软土地基的方法，并且可以采用沉降速率计算时间来控制软土在铺设路面时的沉降，这样才能达到理想的效果，解决根本性的问题。 【关键词】 公路施工；软土地基；对策分析 Abstract Since the 21st century, China's soft foundation treatment technology has developed rapidly, which is widely used in highway construction soft foundation treatment. As we all know, the highway construction cycle has very strict requirements,and highway construction is often accompanied by a large number of emergencies to be caught off guard,the appropriate soft soil foundation treatment scheme is very important to the implementation of highway construction projects. Based on the background of Langcang Expressway,the author analyzes the problems existing in the construction of soft soil foundation in expressway, and aims at the technical problems of laying advanced pavement (early paving transition pavement) on soft land foundation. Combined with the data, the treatment measures and suggestions of soft soil foundation are listed.There are mainly surface treatment, groundwater reduction,grouting and other methods to treat soft soil foundation,and the settlement rate calculation time can be used to control the settlement of soft soil when laying pavement, so as to achieve the ideal effect. Solve fundamental problems. [Key words] Highway Construction; Soft Soil Foundation; Countermeasure Analysis 目录 1绪论 - 5 - 1.1 选择本课题的原因 - 5 - 1.2软土及软土地基的定义 - 6 - 2软土地基导致的危害及原因 - 6 - 2.1软土地基所造成的危害 - 6 - 2.2原因分析 - 6 - 2.2.1地质原因 - 7 - 2.2.2 路基填料 2.2.3地下水和地表水.......................................................................................................................-7- - 7 - 2.2.4设计方面 - 7 - 2.2.5施工方面 - 8- 3软土地基的处理措施及方法 -8 - 3.1现有软土地基处理方法存在的问题 - 8 - 3.2解决软土地基的具体措施 - 9- 3.2.1塑料排水板法 - 9 - 3.2.2稳固剂表层处治法 -9 - 3.2.3换土垫层法处理软土地 3.2.4砂砾垫层法..................................................................-9- 3.2.5砂桩和袋装砂井法.......................................................................................................................-9- 3.2.6强夯法.............................................................................................................................................-10- - 11- 4具体案例分析 - 11- 4.1廊沧高速公路工程概述 - 12 - 4.2软土对高速公路工程的影响 - 12 - 4.3软土地基廊沧高速公路处理方法 - 12 - 4.3.1表层处理法 - 14 - 4.3.2降低地下水法 - 14 - 4.3.3充压灌浆法 - 14 - 4.3.4土的加劲 - 15 - 4.3.5位移法 - 16 - 5.总结 - 17 - 参考文献 - 18 - 致谢 |
