输电线路节理化岩体注浆锚杆基础抗拔力模型试验研究

›› 2012, Vol. 33 ›› Issue (1): 78-82.

输电线路节理化岩体注浆锚杆基础抗拔力模型试验研究

孙益振^{1, 2}，郑卫锋³，范志强⁴

1. 大连理工大学工程力学系，辽宁大连 116024；2. 大连理工大学工业装备结构分析国家重点实验室，辽宁大连 116024； 3. 中国电力科学研究院工程力学研究所，北京 100055；4. 中交第二航务工程勘察设计院有限公司广州分公司，广州 511442

收稿日期:2010-11-04 出版日期:2012-01-10 发布日期:2012-01-17
作者简介:孙益振，男，1976年生，博士，讲师，主要从事岩土力学试验方面的研究工作
基金资助:
国家电网公司科学技术项目(No. SGKJ[2007]1006)。

Tension model test research on grouted bolts foundation in jointed rock masses for transmission lines

SUN Yi-zhen^{1, 2}，ZHENG Wei-feng³，FAN Zhi-qiang⁴

1. Department of Engineering Mechanics, Dalian University of Technology, Dalian, Liaoning 116024 China; 2. Stake Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, Liaoning 116024 China; 3. Institute of Engineering Mechanics, China Electric Power Research Institute, Beijing 100055, China; 4. Guangzhou Branch, CCCC Second Harbor Consultants Co. Ltd., Guangzhou 511442, China

Received:2010-11-04 Online:2012-01-10 Published:2012-01-17

摘要/Abstract

摘要： 针对输电线路注浆锚杆基础特点，根据相似理论设计了节理化岩体注浆锚杆基础抗拔模型试验，模型设计中考虑了岩石弹性模量、浆体弹性模量、节理迹长、节理倾角、锚杆埋深5个因素的变化，选择5因素4水平的正交试验方法进行了模型试验研究。结果表明，岩石弹性模量对注浆锚杆基础抗拔力的影响最大，其次为锚杆埋深、节理倾角、浆体弹性模量、节理迹长。试验过程中以剪切破坏和开裂破坏为主，并以此分析了注浆锚杆的传力机制，得出浆体与锚杆和岩体之间的黏结强度是控制试验结果的主要因素，影响着锚杆的极限抗拔力和破坏状态，在施工过程中应注意质量控制。

关键词: 输电线路, 节理化岩体注浆锚杆基础, 抗拔力, 模型试验

Abstract: According to the character of grouted bolts foundation in jointed rock masses for transmission lines, the model tests are designed based on the similarity theory. The model tests are carried out with focus on the following five factors: elasticity modulus of rock, elasticity modulus of mortar, trace lengths and joint inclination angle in rock mass, embedding depth of the bolt in the rock mass on four different levels of every factor. The experimental results reveal that the elasticity modulus of rock is the most important and sensitive factor influencing the pullout strength of grouted bolt foundation, and the factors next are embedding depth of the bolt in the rock mass, joint inclination angle in rock mass, elasticity modulus of mortar and trace lengths in rock mass. The destruction forms in the model tests are mainly shear failure and split failure. The force transferring mechanism of the bolt is also analyzed. It is concluded that the bond strength between the mortar and the rock, the mortar and the bolt are the main factors controlling test results and affecting the pullout strength of the bolt and failure status. It should be paid more attention to control the quality in the procedure of construction.

Key words: transmission line, grouted bolt foundation in jointed rock mass, pullout strength, model test

中图分类号:

TU 47

孙益振，郑卫锋, 范志强. 输电线路节理化岩体注浆锚杆基础抗拔力模型试验研究[J]. , 2012, 33(1): 78-82.

SUN Yi-zhen ，ZHENG Wei-feng ，FAN Zhi-qiang　. Tension model test research on grouted bolts foundation in jointed rock masses for transmission lines[J]. , 2012, 33(1): 78-82.

参考文献

相关文章 15

[1]	王国辉, 陈文化, 聂庆科, 陈军红, 范晖红, 张川, . 深厚淤泥质土中基坑开挖对基桩影响的离心模型试验研究[J]. 岩土力学, 2020, 41(2): 399-407.
[2]	陈贺, 张玉芳, 张新民, 魏少伟, . 高压注浆钢花管微型桩抗滑特性足尺模型试验研究[J]. 岩土力学, 2020, 41(2): 428-436.
[3]	朱彦鹏, 陶钧, 杨校辉, 彭俊国, 吴强, . 框架预应力锚托板结构加固高填方边坡设计与数值分析[J]. 岩土力学, 2020, 41(2): 612-623.
[4]	于一帆, 王平, 王会娟, 许书雅, 郭海涛, . 堆积层滑坡地震动力响应的物理模型试验[J]. 岩土力学, 2019, 40(S1): 172-180.
[5]	雷华阳, 胡垚, 雷尚华, 祁子洋, 许英刚, . 增压式真空预压加固吹填超软土微观结构特征分析[J]. 岩土力学, 2019, 40(S1): 32-40.
[6]	王东坡, 陈政, 何思明, 陈克坚, 刘发明, 李明清, . 泥石流冲击桥墩动力相互作用物理模型试验[J]. 岩土力学, 2019, 40(9): 3363-3372.
[7]	陈宇龙, 内村太郎, . 基于弹性波波速的降雨型滑坡预警系统[J]. 岩土力学, 2019, 40(9): 3373-3386.
[8]	王钦科, 马建林, 陈文龙, 杨彦鑫, 胡中波, . 上覆土嵌岩扩底桩抗拔承载特性离心模型试验及计算方法研究[J]. 岩土力学, 2019, 40(9): 3405-3415.
[9]	卢谅, 石通辉, 杨东, . 置换减载与加筋复合处理方法对路基不均匀沉降控制效果研究[J]. 岩土力学, 2019, 40(9): 3474-3482.
[10]	杨文波, 邹涛, 涂玖林, 谷笑旭, 刘雨辰, 晏启祥, 何川. 高速列车振动荷载作用下马蹄形断面隧道动力响应特性分析[J]. 岩土力学, 2019, 40(9): 3635-3644.
[11]	蔡雨, 徐林荣, 周德泉, 邓超, 冯晨曦, . 自平衡与传统静载试桩法模型试验研究[J]. 岩土力学, 2019, 40(8): 3011-3018.
[12]	孙飞, 张志强, 易志伟. 正断层黏滑错动对地铁隧道结构影响的模型试验研究[J]. 岩土力学, 2019, 40(8): 3037-3044.
[13]	詹良通, 胡英涛, 刘小川, 陈捷, 王瀚霖, 朱斌, 陈云敏. 非饱和黄土地基降雨入渗离心模型试验及多物理量联合监测[J]. 岩土力学, 2019, 40(7): 2478-2486.
[14]	周东, 刘汉龙, 仉文岗, 丁选明, 杨昌友, . 被动桩侧土体位移场的透明土模型试验[J]. 岩土力学, 2019, 40(7): 2686-2694.
[15]	赵晓彦, 范宇飞, 刘亮, 蒋楚生, . 铁路台阶式加筋土挡墙潜在破裂面特征模型试验[J]. 岩土力学, 2019, 40(6): 2108-2118.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed