玻璃纤维注浆锚杆技术介绍.rar

玻璃纤维注浆锚杆技术

北京中铁瑞威铁道工程技术有限公司

1、前言
近年来，随着地下工程的大量建设，机械化施工程度不断提高，新技术、新工艺陆续被国内众多工程所采用。玻璃纤维注浆锚杆作为国内新引进的隧道“新意法”施工工法的配套技术已受到隧道工程界的广泛关注。
玻璃纤维注浆锚杆的主要组成为玻璃纤维增强聚合物，材料的性能取决于纤维和聚合物的类型及横断面形状等，所以玻璃纤维材料的性能具有灵活多变的特点，能适合不同工程的特殊要求。
玻璃纤维注浆锚杆具有以下特点：
1.可挖除。地下工程中采用玻璃纤维注浆锚杆预加固后的地段，开挖机械（盾构机、单臂掘进机、铣挖机等）可直接挖除通过，为实现隧道的机械化高效施工提供了可靠保证；
2.杆体全段锚固，锚注结合。玻璃纤维锚杆配合分段注浆管注浆，不但为杆体全段提供锚固力，同时加固了杆周岩体；
3.强度高、重量轻。高性能的玻璃纤维锚杆的抗拉强度可达到钢质锚杆的1.5倍；重量为同种规格钢质锚杆的1/4~1/5；
4.安全性好。防静电、阻燃、高度抗腐蚀、耐酸碱、耐低温等优点；满足地下工程安全生产的要求。 
2、玻璃纤维锚杆的性能测试
   对玻璃纤维锚杆的玻璃纤维条片进行基本的材料力
Glass Grouting Bolt Technology

Beijing Railway China Railway Engineering Co., Ltd. Right Way

1 Introduction
In recent years, with a large number of underground construction projects, construction of continuously raising the level of mechanization, new technologies, new processes were gradually adopted by many domestic projects. As the glass fiber bolt grouting tunnel newly introduced "new method" construction method of supporting technology has been widespread concern in tunnel engineering.
Glass fiber is mainly composed of grouting anchor glass fiber reinforced polymer, the material properties depend on the type of fiber and polymer, and cross-sectional shape, so the performance of glass fiber material with the characteristics of flexibility, suitable for different projects specific requirements.
Bolt grouting glass fiber has the following characteristics:
1. To excavation. Underground engineering glass fiber reinforced pre-grouting bolt lots, excavation machine (TBM arm boring machine, boring machine, milling, etc.) directly through the excavation for the realization of construction of the tunnel provides a reliable and efficient mechanization guarantee;
2. Rod anchoring the whole paragraph, combined with bolting. Fiberglass Pipe bolt grouting with the sub, not only to provide the whole paragraph anchor rod force, while strengthening the rock bar week;
3. High strength, light weight. High-performance glass fiber tensile strength bolt steel bolt up to 1.5 times; weight specifications for the steel bolt with 1 / 4 to 1 / 5;
4. Security is good. Anti-static, flame retardant, high resistance to corrosion, acid, low temperature, etc; meet the safety requirements of underground works.
2, glass fiber bolt performance test
   Bolt on glass fiber glass fiber strip was the basic strength of materials