输电线路斜置角锥装配式基础承载性能试验研究

doi:10.11930/j.issn.1004-9649.201604144

中国电力 ›› 2018, Vol. 51 ›› Issue (2): 1-6.DOI: 10.11930/j.issn.1004-9649.201604144

输电线路斜置角锥装配式基础承载性能试验研究

张强¹, 郑卫锋², 赵庆斌³

1. 国家电网公司, 北京 100031;
2. 中国电力科学研究院, 北京 100192;
3. 四川电力设计咨询有限责任公司, 四川成都 610016

收稿日期:2016-04-19 修回日期:2017-08-11 出版日期:2018-02-05 发布日期:2018-02-11
作者简介:张强(1971—),男,江苏连云港人,高级工程师,从事输变电工程建设技术管理工作,E-mail:qiang-zhang@sgcc.com.cn;郑卫锋(1977—),男,河南焦作人,博士,高级工程师,从事输变电工程地基基础研究工作,E-mail:zhengwf@epri.sgcc.com.cn;赵庆斌(1962—),男,陕西汉中人,高级工程师(教授级),从事输电线路设计和研究工作,E-mail:2514338028@qq.com。
基金资助:
国家电网公司科技项目（GCB17201500141）。

Experimental Study on the Load Bearing Capability of Oblique Pyramid Eccentric Assembled Foundation in Transmission Line

ZHANG Qiang¹, ZHENG Weifeng², ZHAO Qingbin³

1. State Grid Corporation of China, Beijing 100031, China;
2. China Electric Power Research Institute, Beijing 100192, China;
3. Sichuan Electric Power Design & Consulting Co., Ltd., Chengdu 610016, China

Received:2016-04-19 Revised:2017-08-11 Online:2018-02-05 Published:2018-02-11
Supported by:
This work is supported by Science and Technology Project of State Grid Corporation of China (No. GCB17201500141).

摘要/Abstract

摘要： 混凝土板条与型钢支架联合的斜置角锥装配式基础通过在支架布置型式与连接方式上的改进与优化，使得基础受力更加合理，可有效节约材料用量。通过在回填黏土中开展与塔腿主斜材一致的受拉、受压真型试验，模拟基础实际受荷工况，分析其荷载位移曲线、地表竖向位移、地表裂缝、型钢支架应力应变关系及基底土压力分布规律等，验证其受荷力学性能与承载机理。试验结果表明，基础的极限上拔承载力达到设计荷载的1.5倍、极限下压承载力达到设计荷载的1.8倍，型钢支架仍处于弹性状态，理论计算值与试验值基本吻合，可满足设计要求，为其在输电线路工程中的试点应用提供技术参考。

关键词: 输电线路, 装配式基础, 型钢支架, 十字焊接板, 承载性能

Abstract: Through modifications and improvements in layout type of scaffolds and connection mode, the eccentric assembled foundation consisting of concrete laths and angle steel scaffolds can improve foundation force bearing and effectively save steel consumption. Real-model tensile and compressive tests are conducted on the backfill clay along direction of main member and diagonal member of tower leg. Through analysis of load displacement curves, steel bracket stress strain relationship, surface cracks and base soil pressure distribution law, mechanical performance and fault status are tested and verified. The ultimate tensile bearing capacity of the eccentric assembled foundation is 1.5 times that of the design value, and the ultimate compressive bearing capacity is 1.8 times. The basic structure is still in elastic state and can meet design requirements under those conditions. The results can provide reference for future engineering applications in transmission line.

Key words: transmission line, assembled foundation, pyramid scaffold, cross-shaped welded plate, load bearing capability

中图分类号:

TU443

张强, 郑卫锋, 赵庆斌. 输电线路斜置角锥装配式基础承载性能试验研究[J]. 中国电力, 2018, 51(2): 1-6.

ZHANG Qiang, ZHENG Weifeng, ZHAO Qingbin. Experimental Study on the Load Bearing Capability of Oblique Pyramid Eccentric Assembled Foundation in Transmission Line[J]. Electric Power, 2018, 51(2): 1-6.

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https://www.electricpower.com.cn/CN/Y2018/V51/I2/1

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输电线路斜置角锥装配式基础承载性能试验研究

Experimental Study on the Load Bearing Capability of Oblique Pyramid Eccentric Assembled Foundation in Transmission Line

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