特高压直流输电线路岩石锚杆群锚基础试验

doi:10.11930/j.issn.1004-9649.2014.12.55.5

中国电力 ›› 2014, Vol. 47 ›› Issue (12): 55-60.DOI: 10.11930/j.issn.1004-9649.2014.12.55.5

特高压直流输电线路岩石锚杆群锚基础试验

程永锋¹, 赵江涛², 鲁先龙¹, 张琰¹, 李维³, 侯鹏翔³, 黄兴怀⁴

1. 中国电力科学研究院,北京 100192;
2. 国家电网公司直流建设部,北京 100031;
3. 宁夏回族自治区电力设计院,宁夏银川 750001;
4. 安徽省电力设计院,安徽合肥 230601

收稿日期:2014-08-28 出版日期:2014-12-18 发布日期:2015-12-08
作者简介:程永锋（1969—）,男,安徽颍上人,博士,高级工程师（教授级）,从事电力工程机械力学及地基基础的研究和管理工作。E-mail: cyf@epri.sgcc.com.cn
基金资助:
国家电网公司2012年科技资助项目（复杂地质环境下输变电工程关键技术研究,GCB17201200123）

Field Full-scale Tests on Group Anchorage Rock Foundations of DC UHV Transmission Line Project

CHENG Yong-feng¹, ZHAO Jiang-tao², LU Xian-long¹, ZHANG Yan¹, LI Wei³, HOU Peng-xiang³,HUANG Xin-huai⁴

1. China Electric Power Research Institute, Beijing 100192, China;
2. Division of DC Construction of SGCC, Beijing 100031, China;
3. Ningxia Hui Autonomous Region Electric Power Design Institute, Yinchuan 750001, China;
4. Anhui Electric Power Design Institute, Hefei 230601, China

Received:2014-08-28 Online:2014-12-18 Published:2015-12-08
Supported by:
This work is supported Science and Technology by State Grid Corporation of China (GCB17201200123)

摘要/Abstract

摘要： 针对山区特高压直流输电线路荷载大、杆塔基础全方位铁塔长短腿和高低主柱基础配合方案的工程实际需求,提出了一种新型的山区特高压直流输电线路承台嵌岩式岩石锚杆群锚基础型式,并在现场完成了不同锚杆埋深和承台嵌岩深度的3个2×2承台式群锚基础的抗拔试验、3个3×3承台式（8根锚杆布置）群锚基础的上拔与水平力组合荷载工况试验。试验结果表明：水平力明显降低了承台嵌岩式岩石锚杆群锚基础的抗拔承载性能,适当增加锚杆长度及承台嵌岩深度可有效提高承台嵌岩式岩石锚杆群锚基础的抗拔承载性能。

关键词: 特高压, 直流, 输电线路, 杆塔基础, 岩石锚杆, 抗拔, 山区

Abstract: A new type of group anchorage rock foundation is presented according to the fact that the load of UHV DC transmission tower foundations are large and the scheme of unequal tower leg length with unequal height of foundation is widely used in the UHV DC transmission project. In addition, three uplift load tests were carried out on 2×2 bearing platforms with four bolts of different anchor length and rock-socked depth, and three load tests were also carried out on 3×3 bearing platforms with eight bolts of different anchor length and rock-socked depth under uplift combined with lateral loading. It is indicated that the lateral loading could reduce the uplift capacity of the group anchorage rock foundation obviously. Increseaing the bolt anchorage length or the rock-socked depth can effectively enhance the uplift and lateral bearing capacties of the group anchorage rock foundation.

Key words: UHV, DC, transmission line, tower foundations, rock anchor foundation, uplift, mountainous area

中图分类号:

TM75

程永锋, 赵江涛, 鲁先龙, 张琰, 李维, 侯鹏翔, 黄兴怀. 特高压直流输电线路岩石锚杆群锚基础试验[J]. 中国电力, 2014, 47(12): 55-60.

CHENG Yong-feng, ZHAO Jiang-tao, LU Xian-long, ZHANG Yan, LI Wei, HOU Peng-xiang, HUANG Xin-huai. Field Full-scale Tests on Group Anchorage Rock Foundations of DC UHV Transmission Line Project[J]. Electric Power, 2014, 47(12): 55-60.

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特高压直流输电线路岩石锚杆群锚基础试验

Field Full-scale Tests on Group Anchorage Rock Foundations of DC UHV Transmission Line Project

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特高压直流输电线路岩石锚杆群锚基础试验

Field Full-scale Tests on Group Anchorage Rock Foundations of DC UHV Transmission Line Project

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