## Journal of Central South University

 第49卷    第9期    总第289期    2018年9月

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(1. 中南大学 土木工程学院，湖南 长沙，410075；
2. 湖南城市学院 土木工程学院，湖南 益阳，413000；
3. 湖南科技大学 岩土工程稳定控制与健康监测省重点实验室，湖南 湘潭，411201；
4. 湖南科技大学 土木工程学院，湖南 湘潭，411201
)

Theoretical model and application of anchor cable tension calculation for rib-beam-pile-anchor support structure

1. School of Civil Engineering, Central South University, Changsha 410075, China;
2. School of Civil Engineering, Hunan City University, Yiyang 413000, China;
3. Key Laboratory of Geotechnical Engineering Stability Control and Health Monitoring of Hunan Province, Hunan University of Science & Technology, Xiangtan 411201, China;
4. School of Civil Engineering, Hunan University of Science & Technology, Xiangtan 411201, China

Abstract:The rib-beam-pile-anchor support structure is different from the traditional pile anchor support structure, with the former adding the vertical rib beam to the traditional row pile. In order to solve the rib-beam pile anchor support structure, according to the equal horizontal displacement at the combined point of the rib beam, pile and anchor, the tension calculation model was built for the rib-beam-pile-anchor support structure based on the deformation coordination theory. The model was applied to calculate the anchor cable tension in a deep foundation pit engineering. The results show that with the theoretical model, the anchor cable tension is less than that of the traditional anchor support structure, and it is also closer to the actual situation of the engineering. Because of the existence of rib beam, the overall stiffness of the structure is improved, the supporting structure stress distribution is more reasonable, the prestress is smaller, the construction cost is lower, and the overall stability of the supporting structure is improved.

Key words: support of deep foundation pit; deformation coordination; ribbed beam-pile-anchor support; anchor tension force; stiffness; stability

 中南大学学报（自然科学版） ISSN 1672-7207 CN 43-1426/NZDXZAC 中南大学学报（英文版） ISSN 2095-2899 CN 43-1516/TBJCSTFT