文档介绍：太原理工大学
硕士学位论文
预应力锚杆复合土钉墙试验研究
姓名:刘钊
申请学位级别:硕士
专业:土木工程
指导教师:梁仁旺;朱振方
20100501
太原理工大学工程硕士研究生学位论文
预应力锚杆复合土钉墙试验研究

摘要

地下空间的开发和综合利用是本世纪城市建设的主题,随着城市旧城
改造和现代市政设施建设事业的迅猛发展,以及高层建筑的兴起,建筑基
坑工程、地铁隧道工程等地下工程的设计和施工新理论新技术的研究成为
当今工程界的热点和难点。本文对土钉支护、复合土钉支护的发展历史、
研究现状进行了综述,分析了预应力锚杆复合土钉支护的作用机理阐明了
钉-锚-土三者有机结合的相互作用关系,指出土钉主要起分担作用、骨
架箍束作用和应力传递与扩散作用,预应力锚杆主要起减小基坑边坡水平
位移和地表沉降、提高边坡抗滑移稳定性、提高土体的抗剪强度作用;并
指出了支护结构以及二次高压劈裂注浆所引起的注浆效应对边坡土体物性
参数的影响,表现为弹性模量增加、泊松比减小、内聚力增大; 并初步探
讨了在该支护方法作用下,支护前后土体力学参数的变化。
对于该支护方法的设计和施工具有一定的指导意义,使该方法在施工
过程中更有预见性,针对性更强。

关键词:预应力锚杆,复合土钉,支护,现场测试

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太原理工大学工程硕士研究生学位论文
TEXT STUDYING OF THE PRESTRESSED ANCHOR
POSITE SOIL NAILING WALL

ABSTRACT

In this century, exploitation prehensive utilization of underground
space is the theme of urban construction. With rapid development of the old city
transformation and modern municipal facilities construction and the rise of high
buildings, The research on new theories and technologies in the design and
construction of underground projects e hot and difficult , such as
Architecture Foundation engineering and Metro tunnel engineering. This paper
summarized the history and status quo of soil nailing supporting posited
soil nailing supporting,and analyzed supporting mechanism of prestressed
posited soil also explained the interaction anic
combination of the nail, anchor and soil, and pointed out that soil nails play the
major role of sharing, hoop-beam frame and stress transfer and diffusion, and
prestressed anchors play the major role of decreasing horizontal displacement of
Pit Slope and ground settlement, increasing the stability of anti-slip slope
andimproving the shear strength of paper indicated the influence on the
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太原理工大学工程硕士研究生学位论文
slope soil physical parameters caused by support structure and secondary
hypertension splitting grouting effect, shown as increased elastic modulus,
decreased Poisso