Prototype tests of assembly foundation of transmission line in aeolian sand area

CHENG Yong-feng; DING Shi-jun

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Prototype tests of assembly foundation of transmission line in aeolian sand area

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- Prototype tests of assembly foundation of transmission line in aeolian sand area
- Vol. 33, Issue 11, (2012)
- 作者机构：
  
  中国电力科学研究院输变电工程力学研究所,北京,100055
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU475
- Online First：14 November 2012，
  
  Published：2012
- 稿件说明：
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CHENG Yong-feng, DING Shi-jun. Prototype tests of assembly foundation of transmission line in aeolian sand area[J]. 2012, 33(11).
DOI：

CHENG Yong-feng, DING Shi-jun. Prototype tests of assembly foundation of transmission line in aeolian sand area[J]. 2012, 33(11). DOI：

摘要

沙漠风积沙地基输电线路杆塔基础设计是当前我国电网建设中的关键研究课题之一。沙漠风积沙属于特殊土地基，这种地基上的输电线路装配式基础缺少相关设计依据。针对沙漠风积沙地基输电线路基础工程的特点，进行了输电线路装配式基础的真型试验，得到了上拔与水平荷载、下压与水平荷载联合作用下的承载变形特性、基础构件的应变特性、基础底板与风积沙地基之间的接触压力变化规律。根据测试结果，确定了沙漠地区风积沙地基装配式基础的地基承载力和上拔角取值，得到了基础稳定的最不利工况，有助于提高基础设计的可靠性和合理性。试验结果为沙漠地区台远-塔中220 kV输电线路基础工程的设计提供了依据。

Abstract

The design of transmission line foundation in aeolian sand area is one of the key research topics in current power grid construction. Aeolian sand is special soil foundation; design in aeolian sand area has little relevant design basis. In the view of the characteristics of transmission line foundation engineering in aeolian sand area

the prototype tests of transmission line foundation are carried out. The deformation and bearing capacity

strain characteristics of the foundation and the contact pressure between the foundation and aeolian sand under the combination of uplift and horizontal load as well as the combination of pushdown and horizontal load are studied through the tests. According to the results

the design parameters of transmission line foundation in aeolian sand area are proposed. The test results provide a basis for design of foundations in Taiyuan-Tazhong 220 kV transmission line

which improve the reliability and rationality of the design of the transmission line foundation in aeolian sand area.

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