Numerical analysis of the pretension deviations of a novel crescent-shaped tensile canopy structural system

Hua, Dengxin; Min-rui, Zhang; Liu, Hong-chuang; Shi-lin, Dong; Zhang, Zhihong; Chen, Lingqiu

doi:10.1016/j.engstruct.2016.04.005

Cited by 34 publications

(11 citation statements)

References 9 publications

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“…Up to now, tensile structures have not been limited in cable dome structure. At present, research on tensile structures is mainly concentrated on single cable net structure (Jiang et al, 2015;Zhu et al, 2021), cable dome structure (Gao et al, 2015;Guo and Zhou, 2016), spoke cable-truss structure (Deng et al, 2016;Jeon and Lee, 2000), spatial cable-truss structure without inner cable (SCSWIRC) (Lu et al, 2019;Xue et al, 2017Xue et al, , 2020a, and composted tensile structure (Kitiporuchai et al, 2005), and so on.…”

Section: Introductionmentioning

confidence: 99%

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Simplification and further optimization of spatial cable-truss structure without inner ring cables

Lü

Xue

Liu

et al. 2022

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PurposeIn order to optimize SCSWIRC, the simplification and further optimization method is proposed. SCSWIRC's optimization includes two levels. The first level refers to simplifying structural system from the perspective of components; the second level refers to optimizing components' sectional areas from the perspective of mechanics. The first level aims to remove redundant components, and the second level aims to reduce structural self-weight based on the first level. The purpose of the paper is to simplify SCSWIRC's structural system and optimize structural self-weight and reduce construction forming difficulty.Design/methodology/approachGrid-jumping layout and multi-objective optimization method is used to simplify and further optimize Spatial cable-truss structure without inner ring cables (SCSWIRC). Grid-jumping layout is used to simplify remove redundant components, and multi-objective optimization method is used to reduce structural self-weight. The detailed solving process is given based on grid-jumping layout and multi-objective optimization method.FindingsTake SCSWIRC with a span of 100m as an example to verify the feasibility and correctness of the simplification and further optimization method. The optimization results show that 12 redundant components are removed and the self-weight reduces by 3.128t from original scheme to grid-jumping layout scheme 1. The self-weight reduces from 36.007t to 28.231t and feasible coefficient decreases from 1.0 to 0.627 from grid-jumping layout scheme 1 to multi-objective optimization scheme. The simplification and further optimization can not only remove the redundant components and simplify structural system to reduce construction forming difficulty, but also optimize structural self-weight under considering structural stiffness to reduce project costs.Originality/valueThe proposed method firstly simplifies SCSWIRC and then optimizes the simplified SCSWIRC, which can solve the optimization problem from the perspective of components and mechanics. Meanwhile, the optimal section solving method can be used to obtain circular steel tube size with the optimal stiffness of the same areas. The proposed method successfully solves the problem of construction forming and project cost, which promotes the application of SCSWIRC in practical engineering.

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Section: Introductionmentioning

confidence: 99%

“…, 2021), cable dome structure (Gao et al. , 2015; Guo and Zhou, 2016), spoke cable-truss structure (Deng et al. , 2016; Jeon and Lee, 2000), spatial cable-truss structure without inner cable (SCSWIRC) (Lu et al.…”

Section: Introductionmentioning

confidence: 99%

Simplification and further optimization of spatial cable-truss structure without inner ring cables

Lü

Xue

Liu

et al. 2022

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“…Meanwhile, planar cable-truss frames share the same characteristics, such as lightweight, high stiffness, sizeable spanning ability, and simple construction. At present, cable-truss tension structures mostly include two genres: Spoke Cable-truss Structure [5] and Annular Crossed Cable-truss Structure (ACCTS) [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Spoke Cable-truss Structure cases involve Foshan Stadium, Shenzhen Baoan Stadium, Yueqing Stadium [5], Busan Stadium in South Korea [9], and so on. But ACCTS is still at the stages of theoretical and experimental research, and there are no any project cases in the world.…”

Section: Introductionmentioning

confidence: 99%

Study on Force Mechanism of Cable-Truss Frame and Jumped Layout of Annular Crossed Cable-Truss Structure

2021

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A new type of cable-strut tension structure named Annular Crossed Cable-truss Structure(ACCTS) comprises a series of planar cable-truss frames crossed each other. To investigate the force mechanism of ACCTS, a cable-truss frame model with 2-bar and 6-cable has been developed, and its initial stiffness formula has been derived as well. The model is further simplified to make it is upper and lower vector heights equal, and then the initial stiffness formula and the critical slack load formula are further deduced. Based on ANSYS software and cable-truss frame with a span of 60m, the influences of the number of struts and position of jumped layout on the cable-truss frame are studied. According to the former 60m span cable-truss frame's research results, the jumped layout of ACCTS with a span of 100m is studied. The static and dynamic performances of two schemes, the optimal jumped layout scheme and the original scheme, are systematically studied. It is shown that the number of struts would be about 6~8 for the planar cable-truss frame and the optimal order of jumped layout is strut 6-7→strut 4-5→strut 2-3. The optimal order of jumped layout of ACCTS agrees with that of the cable-truss frame, verifying the feasibility of conclusions. In the condition of no variation in the original structure's static and dynamic performance, the optimal scheme of the jumped layout will lower the steel consumption and enhance the buckling loads. Moreover, it also simplifies structure for easy construction.

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“…The major sources of geometric errors can be converted into element length errors during analysis. According to Deng et al’s (2016) study on a cable-truss system as a stadium roof, the choice of tensioning schemes significantly affects control performance over pretension deviations. In the worst-case scenario, pretension deviations up to 48% were observed in the radial cables if all the members were passively installed with fixed lengths.…”

Section: Introductionmentioning

confidence: 99%

Modal testing and detection of pretension deviation in a cable dome structure

Liu

Dong

Liang

2018

Advances in Structural Engineering

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Pretension deviation may cause stiffness degradation and overstress that can compromise the safety of tensile structures, which can be diagnosed by modal identification. This article presents modal tests on a 1:10 scaled model of a herringbone-ribbed cable dome structure. An optimal sensor placement scheme is proposed to observe the geometric stiffness change induced by pretension deviation. Based on the tests, different output-only modal identification techniques were implemented. A substructure strategy was adopted to overcome the limited measurement quantity and provide localized diagnoses. The experimental results show that operational modal analysis methods based on output-only data can effectively identify major modes of massive structures. The sensitivity of modal characteristics to pretension deviation is also evaluated via experimental comparisons, and modifications are implemented in an analytical finite element model to approximate the test model. The identified modal information can help locate stiffness degradation and thereby pretension loss in tensile structures. A modified modal strain energy method is proposed to detect pretension loss from decentralized testing and is verified by the test results.

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Numerical analysis of the pretension deviations of a novel crescent-shaped tensile canopy structural system

Cited by 34 publications

References 9 publications

Simplification and further optimization of spatial cable-truss structure without inner ring cables

Simplification and further optimization of spatial cable-truss structure without inner ring cables

Study on Force Mechanism of Cable-Truss Frame and Jumped Layout of Annular Crossed Cable-Truss Structure

Modal testing and detection of pretension deviation in a cable dome structure

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