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Piles are widely used to transfer the horizontal load of high-rise buildings, transmission towers, and bridges, especially for superstructures constructed near slopes. This study investigated bearing capacities of single piles under the combined horizontal force (H) and bending moment (M) for the pile in sloping ground. A 3D finite element model was proposed to simulate the non-linear pile–soil interaction and was verified by a model test. A series of numerical tests were conducted to obtain the failure envelope of bearing capacities of single piles under various combinations of H and M. The existence of slopes significantly reduced the bearing capacity of piles, especially when the horizontal and rotational displacements moved to the dip direction of the slope. An oblique ellipse was able to describe the failure envelope of bearing capacities of single piles near slopes in the HM plane. As the pile was installed away from the crest of the slope, both the width and height of the ellipse increased and the center of the ellipse was approaching the origin. The results of this article can provide useful references for designing horizontally loaded piles near slopes.

Transmission tower foundation defect identification has become more and more important. However, conventional detection methods are inefficient, which can cause secondary damage to the structure, and are limited by the inability to achieve large-scale detection. For this reason, the SSP technology is introduced in this paper which is applied to the foundation defect identification of transmission tower. Firstly, the feasibility of applying SSP technology to the foundation defect identification of transmission tower is analyzed. Secondly, the field test flow and data processing of SSP technology for foundation defect identification of transmission tower are introduced. Finally, the basic model of a transmission tower is tested to verify the feasibility of SSP technology for the foundation defect identification of transmission tower.

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In order to clarify the relationship between the efficacy loss of strain clamp joints and the crimping quality, three groups of clamp joints, crimped under unbalanced conditions at both ends, naming NY-240/40, NY-400/35 and NY-630/45 were selected and then subjected to tensile tests and X-ray inspection. After a detailed analysis of the experimental results, it can be seen that under the condition of unbalanced crimping quality, the efficacy loss all occurred on the side with better crimping quality, which provides an instructive reference for the crimping technique of strain clamps in actual project construction.