【作者】 吴琦琪；

【导师】 蔡袁强；

【作者基本信息】 浙江大学 ， 岩土工程， 2004， 硕士

【摘要】 复合型土钉支护技术是在不断改进和完善土钉支护技术并联合其它传统支护方法的基础上应运而生的。工程实践表明，复合土钉支护技术不仅具有土钉支护技术施工快捷、经济性好和便于信息化管理等诸多优点，而且突破了普通土钉支护技术的限制使用范围，具有更广阔的应用领域和前景。 本文从复合土钉支护结构的概念入手，对其结构组成、构造形式以及主要构件的工程特性、施工方法进行分析研究。在总结前人的研究成果下，针对复合土钉墙构造的特点，建立了模拟复合土钉墙受力变形的计算模型，并结合工程实测资料，运用大型通用有限元程序ABABQUS对复合土钉墙进行了有限元分析，详细讨论了复合土钉支护结构开挖过程中的变形特性、地面沉降性状、土钉受力性状；土钉长度变化、土钉间距变化、搅拌桩桩径变化对复合土钉支护结构的影响；复合土钉支护结构在不同地基条件下的变形特性。在详细剖析了复合土钉支护结构变形规律的基础上，对复合土钉支护结构的设计、施工等提出了一些有益建议。更多还原

【Abstract】 The technique of strut frame made of composed soil nails comes from the combination of the developing technique of strut frame made of soil nails and other traditional method of strut frame. It is certificated in the engineering practice that this technique not only is economical easy to control and completed, such as the other methods of strut frame, but also break the applicability of common method of strut frame, which assure the wider applicability and foreground of the technique of strut frame made of composed soil nailsThis paper begins with the concept of the strut frame made of composed soil nails, analyzing the composition, engineering characters and job practice of the technique of strut frame made of composed soil nails. On the basis of the others, according to the constructional feature of the constitution of the composed soil nails, the computation mode of the he strut frame made of composed soil nails was set up to analyze the distortion of the he strut frame made of composed soil nails when it is stressed. With the engineering data, the strut frame made of composed soil nails is analyzed with the program ABABQUS, and the effects of the distortion characters, the property of the deposition of the ground, the mechanical property of the soil nails, the variation of the length and the separation of the soil nails, and the diametric of the mixing piles on the strut frame made of composed soil nails, and the distortion property of the strut frame made of composed soil nails under different ground conditions. On the analyze of the strut frame made of composed soil nails, suggestion on the design and construction of the strut frame made of composed soil nails is extracted.更多还原