Experimental study on the stability of the transmission tower with hybrid slab foundation

Yuan, Guanglin; Yang, Biao; Huang, Zhaohui; Tan, Xiaozhe

doi:10.1016/j.engstruct.2018.01.066

Cited by 11 publications

(2 citation statements)

References 14 publications

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“…Li Wei and his team paid attention to the transmission tower found in saline areas, and they explored the utilization of ultra-high-performance concrete (UHPC) to replace traditional concrete to improve durable proprieties [5]. Guanglin Yuan et al [6] prompted a new design of hybrid plate foundations, which verified a good resistance to deformation and stress within the system. Zhou Yingbo et al [7] evaluated the stability of a 500 kV transmission tower foundation on the landslide.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on Plate Splicing of Prefabricated Plate Foundation

Wang,

Gao,

Wang

et al. 2023

Buildings

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Tower foundations are generally of a cast-in-place structure with the disadvantages of low industrialization level and long construction period. The development of prefabricated foundation for transmission line projects is efficient to improve the industrialization level of the construction of tower foundation. In this study, the schemes of post-pouring belt U-shaped steel connection, post-pouring belt lap connection, grouting sleeve connection, and post-tensioned bond prestressed reinforcement connection, which have been widely used on building structures, are newly proposed to apply on plate foundation. The schemes were compared on processing, transporting, on-site constructing and performance. The pseudo-static tests on cast-in-place plate strip, post-pouring belt U-shaped steel connection and post-pouring belt lap connection plate strip were carried out. The results revealed that all the test plate bands were damaged in the bending mode, same as that of ordinary concrete. When U-shaped steel is adopted, more than 90% of the cast-in-place bearing capacity can be reached. The initial stiffness of prefabricated plate strip and cast-in-place strip is basically the same. The load-bearing capacity of the component is relevant to the anchorage length of the U-shaped steel. Although increasing the concrete strength of post-cast belt can improve the ultimate bearing capacity and shorten the construction period, the deformation capacity is reduced. Compared to other connection methods, post-pouring belt U-shaped steel connections have the advantage of simple construction, higher bearing capacity and stability. In summary, the post-pouring belt U-shaped steel connection scheme is recommended.

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Section: Introductionmentioning

confidence: 99%

An Experimental Study on Plate Splicing of Prefabricated Plate Foundation

Wang,

Gao,

Wang

et al. 2023

Buildings

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“…Решетчатые башенные сооружения широко применяются в практике возведения стальных опор линий электропередач [1][2][3][4][5], опор ветрогенераторов [6][7][8][9][10], опор для размещения светосигнального оборудования [11]. При этом опоры с трехгранным поперечным сечением являются более экономичными, чем четырехгранные [12; 13].…”

Section: Introductionunclassified

Trihedral lattice supports geometry optimization according to the stability criterion

Akhtyamova

Yazyev

Чепурненко

et al. 2022

Struct. Mech. of Eng. Const. and Build

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The study proposes a technique for optimizing trihedral lattice tower structures from the condition of maximum critical load. Towers with a cross section of elements in the form of round pipes are considered. The load is represented by a horizontal concentrated force at the upper end of the tower, simulating the operation of a wind turbine. A constraint on the constancy of the mass of the structure is introduced. The variable parameters are the width of the tower, which varies in height, the height of the panels, the external diameters of the cross-section of the chords and lattice. The solution of the nonlinear optimization problem is performed in the MATLAB environment using the Optimization Toolbox and Global Optimization Toolbox packages. A tower of constant width is taken as the initial approximation. The calculation of the critical load is performed by the finite element method in a linear formulation by solving the eigenvalue problem. To solve the nonlinear optimization problem, the interior point method, the pattern search method and the genetic algorithm are used. The efficiency of the listed methods is compared. It has been found that the interior point method is the most efficient. The critical load for the optimal tower compared to the tower of constant width with the same mass increased by 2.3 times.

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